Source: https://patents.google.com/patent/US9537184
Timestamp: 2018-07-16 12:28:17
Document Index: 10599202

Matched Legal Cases: ['Application No. 201380002399', 'Application No. 201380002399', 'Application No. 13761960', 'Application No. 2015', 'Application No. 2015', 'Application No. 2014']

US9537184B2 - Lithium ion secondary battery - Google Patents
US9537184B2
US9537184B2 US14186753 US201414186753A US9537184B2 US 9537184 B2 US9537184 B2 US 9537184B2 US 14186753 US14186753 US 14186753 US 201414186753 A US201414186753 A US 201414186753A US 9537184 B2 US9537184 B2 US 9537184B2
US20140170450A1 (en )
The positive electrode is prepared by, for example, applying slurry containing a positive electrode active material to a current collector of aluminum foil or aluminum alloy foil.
As a result of this charging test, an increase in voltage was detected 2 minutes 40 seconds after the start of charging, and the fuse body was melted down to stop the charging. In this case, the temperature increase of the battery can was less than 10° C. (the temperature was 35° C. or lower), and the battery was not changed in shape, except the meltdown of the fuse body.
wherein the overcharge preventer comprises: a voltage detector configured to detect a voltage equal to or higher than a predetermined value between the positive electrode and negative electrode; a fuse body provided on the positive electrode lead or the negative electrode lead; a switch unit; and a driver configured to drive the switch unit, the fuse body and the switch unit are connected in series to constitute a short circuit for the electrode assembly,
the switch unit comprises a positive electrode sub lead and a negative electrode sub lead opposed to each other, and an insulating resin film placed between the positive electrode sub lead and the negative electrode sub lead,
the positive electrode sub lead is connected to the positive electrode,
the negative electrode sub lead is connected to the negative electrode,
a push force is always applied in a direction of bringing both of the positive electrode sub lead and the negative electrode sub lead into contact with each other between the positive electrode sub lead and the negative electrode sub lead,
the insulating resin film insulates the positive electrode sub lead and the negative electrode sub lead and contacts with the positive electrode sub lead and the negative electrode sub lead when the short circuit is open,
when the voltage between the positive and negative electrodes reaches the predetermined value or higher in the case of charging, the driver is activated by a signal from the voltage detector to close the switch unit, and melt down the fuse body by energy accumulated in the electrode assembly, and
wherein the insulating resin film has one end fixed, and one end opposite the fixed end with a pull force applied thereto by a spring material.
2. The battery according to claim 1, wherein the overcharge preventer is activated by detecting the voltage inside the battery can.
4. The battery according to claim 1, wherein the push force is applied by a spring material or a magnet.
5. The battery according to claim 1, wherein a resistance heater placed near the resin film is configured to generate heat with a current from the voltage detector, soften or melt the resin film, and bring the positive electrode sub lead and the negative electrode sub lead into physical contact with each other.
6. The battery according to claim 1, wherein the switch unit is driven by the driver so as to come into contact with the positive electrode sub lead and the negative electrode sub lead, when a voltage between the positive electrode and the negative electrode reaches the predetermined value or higher while charging the battery.
7. The battery according to claim 1, wherein the overcharge preventer is at least partially coated and sealed with a solvent-resistance and insulating resin.
8. The battery according to claim 7, wherein the solvent-resistance and insulating resin is a laminate material.
9. The battery according to claim 8, wherein the laminate material comprises a single-layer or multi-layer resin, or a laminated body of a single-layer or multi-layer resin film laminated on aluminum foil as a base material.
10. The battery according to claim 1, wherein a resistance element is connected in parallel with the fuse body.
11. The battery according to claim 10, wherein the resistance value of the resistance element is 10000 times or more as high as the resistance value of the fuse body.
12. The battery according to claim 1, wherein the short circuit is closed by softening or melting the insulation resin and physically connecting the positive electrode sub lead and the negative electrode sub lead.
US20140170450A1 true US20140170450A1 (en) 2014-06-19
US9537184B2 true US9537184B2 (en) 2017-01-03
DE102013018397A1 (en) * 2013-11-02 2015-05-07 Daimler Ag Battery having a plurality of battery cells
US6060185A (en) 1996-10-29 2000-05-09 Nippon Moli Energy Corp. Protective device for secondary batteries
JP2001312950A (en) 2000-04-28 2001-11-09 Sanyo Electric Co Ltd Thermal fuse having self-heating element and pack battery with the built-in thermal fuse
US6322921B1 (en) 1996-07-09 2001-11-27 Matsushita Electric Industrial Co., Ltd. Secondary battery and sealing plate assembly therefor
JP2001352666A (en) 2000-06-09 2001-12-21 Hitachi Ltd Protective device for secondary battery and set battery
JP2002330540A (en) 2001-04-27 2002-11-15 Sanyo Electric Co Ltd Battery pack
JP2003297205A (en) 2002-04-01 2003-10-17 Uchihashi Estec Co Ltd Thermoprotector and thermal protection method of equipment
JP2003317702A (en) 2002-04-23 2003-11-07 Hitachi Maxell Ltd Thin battery
JP2005129442A (en) 2003-10-27 2005-05-19 Sony Corp Secondary battery and battery pack
JP2006185708A (en) 2004-12-27 2006-07-13 Nissan Motor Co Ltd Secondary battery
JP2007273221A (en) 2006-03-31 2007-10-18 Toshiba Corp Battery protection circuit
JP2008130458A (en) 2006-11-22 2008-06-05 Sony Corp Battery and battery unit
JP2010092874A (en) 2005-03-30 2010-04-22 Samsung Sdi Co Ltd Cylinder-shaped lithium ion secondary battery
US20110104525A1 (en) 2009-10-30 2011-05-05 Jinwan Kim Battery pack and driving method thereof
JP2011210717A (en) 2010-03-30 2011-10-20 Sb Limotive Co Ltd Secondary battery
EP2393145A1 (en) 2010-06-04 2011-12-07 SB LiMotive Co., Ltd. Secondary battery
WO2013137451A1 (en) 2012-03-15 2013-09-19 株式会社 東芝 Lithium-ion rechargeable battery
Combined Chinese Office Action and Search Report issued Feb. 16, 2016 in Patent Application No. 201380002399.0 (with English translation).
Combined Chinese Office Action and Search Report issued Jun. 16, 2015 in Patent Application No. 201380002399.0 (with English language translation).
Extended European Search Report issued Oct. 8, 2015 in Patent Application No. 13761960.7.
International Search Report mailed May 14, 2013 for PCT/JP2013/057450 filed on Mar. 15, 2013 with English Translation.
Machine translation of JP2001-312950 to Toshio et al.; Nov. 2001. *
Machine Translation of JP2001-352666 to Michiko et al.; Dec. 2001. *
Machine translation of JP2007-273221 to Schinichiro et a.; Oct. 2007. *
Office Action issued Apr. 26, 2016, in Japanese Patent Application No. 2015-007870 (w/English-language Translation).
Office Action issued Nov. 17, 2015 in Japanese Patent Application No. 2015-007870 (with English language translation).
Office Action issued on Nov. 18, 2014 in the corresponding Japanese Patent Application No. 2014-505033 (with English Translation).
U.S. Appl. No. 14/186,451, filed Feb. 21, 2014, Takahashi et al.
US20140170450A1 (en) 2014-06-19 application
JP2000182598A (en) 2000-06-30 Nonaqueous electrolyte secondary battery and electrothermal relay for battery
US20110052970A1 (en) 2011-03-03 Battery
CN1328349A (en) 2001-12-26 The electrochemical device