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Secondary battery

Patent Number: 8110309
Publication Date: 2012-02-07
Inventors: Nohma, Toshiyuki; Taniguchi, Yasutomo; Yamauchi, Yasuhiro; Furukouji, Yoshiyuki

The invention provides a secondary battery having positive electrode plates 14 and negative electrode plates, with insulating tapes 22A, 22B affixed to the cut end portions 14d, including an active material layer 14b portion thereof, of either the positive electrode plates 14 or the negative electrode plates, or both. These electrode plates are stacked or rolled alternately, with separators 23 interposed, into an electrode group ...

Lithium secondary battery of improved low-temperature power property

Patent Number: 8110308
Publication Date: 2012-02-07
Inventors: Kim, Jim; Shin, Youngjoon; Roh, Suk Myung; Hwang, Sunjung

Provided is a lithium secondary battery which has excellent low-temperature power output characteristics by the inclusion of a given amount of a lithium metal oxide and/or a lithium metal sulfide in an anode mix for a lithium secondary battery containing a carbon-based anode active material and is thereby capable of being used as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs) that must provide high-power output at low temperatures as well as at room ...

Negative electrode for lithium secondary battery, method for producing same, and lithium secondary battery comprising such negative electrode for lithium secondary battery

Patent Number: 8110307
Publication Date: 2012-02-07
Inventor: Iwamoto, Kazuya

A negative electrode 100 for a lithium secondary battery includes: a current collector 11; a negative-electrode active material body 12 supported by the current collector 11, the negative-electrode active material body 12 having a chemical composition represented as SiO_x(0.1≦x≦1.2); and a covering layer 14 formed on the negative-electrode active material body 12, the covering layer 14 having a chemical composition ...

Binder composition for secondary battery electrode, slurry for secondary battery electrode, and secondary battery electrode

Patent Number: 8110306
Publication Date: 2012-02-07
Inventors: Nishikawa, Akira; Itou, Kazuaki; Mogi, Takeshi; Suzuki, Hirobumi

There is provided a binder composition for secondary battery electrode, containing

- (A) a sulfonic acid group-containing polymer, and
- (B) an organic solvent composed mainly of N-methylpyrrolidone,
  
  wherein the proportion of the sulfonic acid group in the polymer (A) is 0.005 to 1.0 mmol/g.
...

Rechargeable lithium battery

Patent Number: 8110305
Publication Date: 2012-02-07
Inventors: Yew, Kyoung-Han; Lee, Doo-Kyoung; Choi, Nam-Soon; Kim, Sung-Soo; Park, Su-Yeong

A rechargeable lithium battery including: a negative electrode comprising lithium-vanadium oxide having the following Formula 1 and being capable of intercalating and deintercalating lithium ions, and a carbon-based material; a positive electrode comprising a positive active material capable of intercalating and deintercalating lithium ions; and an electrolyte comprising a monomer including alkylene oxide and a reactive double bond, a lithium salt, and a non-aqueous organic ...

Packing material for lithium cell and production method thereof

Patent Number: 8110304
Publication Date: 2012-02-07
Inventor: Suzuta, Masayoshi

A packing material for a lithium cell of the present invention includes a first adhesive layer, an aluminum foil layer, a coating layer, an adhesive resin layer or a second adhesive layer, and a sealant layer laminated sequentially onto one surface of a base material layer, wherein the coating layer includes a layer (A) in which 1 to 100 parts by mass of a phosphoric acid or a phosphate has been blended into 100 parts by mass of a rare earth element based ...

Non-aqueous secondary battery and its control method

Patent Number: 8110303
Publication Date: 2012-02-07
Inventors: Kikuta, Haruo; Kato, Shiro; Kinoshita, Hajime; Tajiri, Hiroyuki; Yata, Shizukuni

The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary ...

Battery pack

Patent Number: 8110302
Publication Date: 2012-02-07
Inventors: Nakashima, Takuya; Yasui, Shunsuke

Provided is a battery pack in which the production of heat due to passage of current in a connector for connecting secondary batteries in parallel is made uniform to increase service life and reduce maintenance costs. A positive terminal connector 14 comprises a connector 14 with through-holes 18. The connector 14 is divided into two regions: a distant region which is distant from the portion connected to an external terminal; and a close region which is close to ...

Energy storage device and cell configuration therefor

Patent Number: 8110301
Publication Date: 2012-02-07
Inventors: Iacovangelo, Charles Dominic; Tysoe, Steven Alfred; Bogdan, Jr., David Charles; Vallance, Michael Alan; Shapiro, Andrew Philip; Hart, Richard Louis; Zappi, Guillermo Daniel

An article is provided. The article may include an electrochemical cell. The cell may include a molten electrolyte, and at least one molten electrode. The cell may include a structure for separating an anode from a cathode, while enabling ionic communication between the anode and cathode. An energy storage device comprising the article is also provided. Methods related to the article and the energy storage device may be ...

Battery mounting system

Patent Number: 8110300
Publication Date: 2012-02-07
Inventors: Koetting, William; Klein, Martin J.; Niedzwiecki, Mark

A mounting system for a plurality of battery modules needed to form a battery pack includes a battery tray with a combination of fixed and detachable retainers that enable insertion/removal of individual battery modules from the battery pack, both during assembly of the battery pack and later in conjunction with service during its operation. The battery tray may be disposed on a base plate for added support, as well as integration of more than one battery tray and associated modules into a ...

Anode material for lithium batteries

Patent Number: 8105719
Publication Date: 2012-01-31
Inventors: Amine, Khalil; Belharouak, Ilias

Primary and secondary Li-ion and lithium-metal based electrochemical cell systems. The suppression of gas generation is achieved through the addition of an additive or additives to the electrolyte system of respective cell, or to the cell itself whether it be a liquid, a solid- or plasticized polymer electrolyte system. The gas suppression additives are primarily based on unsaturated ...

Non-aqueous electrolyte secondary battery, negative electrode material, and making method

Patent Number: 8105718
Publication Date: 2012-01-31
Inventors: Fukuoka, Hirofumi; Nakanishi, Tetsuo; Watanabe, Koichiro

A negative electrode material comprising an active material and 1-20 wt % of a polyimide resin binder is suitable for use in non-aqueous electrolyte secondary batteries. The active material comprises silicon oxide particles and 1-50 wt % of silicon particles. The negative electrode exhibits improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide. The non-aqueous electrolyte secondary battery has a high initial efficiency and maintains ...

Lithium anodes for electrochemical cells

Patent Number: 8105717
Publication Date: 2012-01-31
Inventors: Affinito, John; Sheehan, Christopher J.; Mikhaylik, Yuriy V.; Skotheim, Terje A.

Provided is an anode for use in electrochemical cells, wherein the anode active layer has a first layer comprising lithium metal and a multi-layer structure comprising single ion conducting layers and polymer layers in contact with the first layer comprising lithium metal or in contact with an intermediate protective layer, such as a temporary protective metal layer, on the surface of the lithium-containing first layer. Another aspect of the invention provides an anode active layer formed ...

Active material for rechargeable lithium battery and rechargeable lithium battery including same

Patent Number: 8105716
Publication Date: 2012-01-31
Inventors: Kim, Joon-Sup; Lee, Young-Hee; Kang, Yong-Mook; Sung, Min-Seok; Kim, Sung-Soo; Sheem, Kyou-Yoon

The present invention relates to an active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes an active material and a fiber-shaped or tube-shaped carbon conductive material attached to the surface of the active material. The active material includes a conductive shell including a fiber-shaped or tube-shaped carbon conductive material and increases discharge capacity due to improved conductivity and improves ...

Hydrogen-absorbing alloy and nickel-metal hydride storage battery

Patent Number: 8105715
Publication Date: 2012-01-31
Inventors: Ishida, Jun; Magari, Yoshifumi; Yasuoka, Shigekazu

A hydrogen absorbing alloy is provided that is represented by the general formula Ln_1-xMg_xNi_yA_z, where: Ln is at least one element selected from the group consisting of Ca, Zr, Ti, and rare-earth elements including Y; A is at least one element selected from the group consisting of Co, Mn, V, Cr, Nb, Al, Ga, Zn, Sn, Cu, Si, P, and B; and x, y, and z satisfy the following conditions 0.05≦x≦0.25, 0

Lithium-ion battery

Patent Number: 8105714
Publication Date: 2012-01-31
Inventors: Howard, William G.; Scott, Erik R.; Schmidt, Craig L.; Jain, Gaurav

A lithium-ion battery includes a plurality of generally planar positive and negative electrodes arranged in alternating fashion to form an electrode stack. Each of the electrodes includes a current collector having two opposed surfaces and an active material provided on at least one of the two opposed surfaces. The active material of the negative electrodes has a potential that is greater than 0.2 volts versus a reference electrode. The area of the current collectors of the negative ...

Electrode assembly with separated support tapes in secondary battery

Patent Number: 8105713
Publication Date: 2012-01-31
Inventor: Kim, Jae-Woong

Separated support tapes are attached to an electrode assembly which includes a negative electrode plate, a positive electrode plate, and a separator for performing charge and discharge operations. The separated support tapes are attached to a lower portion of the electrode assembly so as to allow the electrode assembly to be easily inserted into a can, while reducing the possibility of fire in a secondary battery caused by a hard short when the secondary battery is compressed due to ...

Sealed secondary battery, and method for manufacturing the battery

Patent Number: 8105712
Publication Date: 2012-01-31
Inventors: Harima, Yukio; Kumazawa, Seiji; Fukuoka, Takahiro; Funami, Koji; Miyata, Kyosuke

An electrode group 4 formed by stacking or winding a positive electrode plate 1 and a negative electrode plate 2 with a separator 3 interposed therebetween, is housed in a battery case 5. An opening of the battery case 5 is sealed with a sealing plate 10. A lead 11 extending from one of the positive and negative electrode plates in the electrode group 4 is laser-welded to the sealing plate 10 by application of a laser ...

Nonaqueous electrolyte secondary battery

Patent Number: 8105711
Publication Date: 2012-01-31
Inventors: Okada, Yukihiro; Muraoka, Yoshiyuki; Nishino, Hajime; Nakai, Miyuki

A nonaqueous electrolyte secondary battery includes: a positive electrode 4; a negative electrode 6; a separator 5; and a battery case 1 in which an electrode plate group 7 including the positive electrode 4 and the negative electrode 6 spirally wound or stacked with the separator 5 interposed therebetween is stored with an electrolyte. In the nonaqueous electrolyte secondary battery, after charging, when the separator 5 is ...

Battery with leads

Patent Number: 8105710
Publication Date: 2012-01-31
Inventors: Shose, Tomoyuki; Kondou, Masao; Akai, Yasuo; Ikeda, Yoshihisa

A battery 10A with leads has a low-profile external casing acting 11 as one of a pair of electrode terminals and a closure plate 12 acting as the other of the electrode terminals. The closure plate 12 hermetically seals an opening of the external casing 11 via an insulating gasket. A pair of lead plates 13 and 14 are each welded to a different one of the electrode terminals 11 and 12. One of the lead plates 13 and ...

Battery module

Patent Number: 8105709
Publication Date: 2012-01-31
Inventor: Hellmann, John V.

There is disclosed a battery module that includes a housing. At least one terminal is melt joined with the bus member of the housing sealing the terminal relative to the bus member and providing a conductive path to an interior of the battery module. The terminal may be melt joined in an ultrasonic joining operation or in a thermal insertion operation. A plurality of cells are disposed in the housing with each of the cells electrically coupled via bus bars integrated into a bus member. Each ...

Heat exchanger for an energy storage device

Patent Number: 8105708
Publication Date: 2012-01-31
Inventors: Rudorff, Axel; Guener, Nevzat

A heat exchanger is connected to at least one energy storage cell of an energy storage device in a heat-conducting manner. The energy storage device is enclosed by a housing. The energy storage cells have at least one safety pressure release valve or burst opening for the release of gases to the outer environment. The heat exchanger at least partially forms at least one side of the housing and has holes that connect the safety pressure releases of the energy storage cells with the ...

Fuel cell device and electronic equipment using fuel cell device

Patent Number: 8101323
Publication Date: 2012-01-24
Inventor: Yamamoto, Tadao

Disclosed is a fuel cell device comprising a plurality of generator cells to generate electric power by an electrochemical reaction of an oxidizing agent and a reducing agent, wherein the plurality of generator cells include: a plurality of gas flow paths to send a reactant gas for the electrochemical reaction respectively to the plurality of generator cells; and a plurality of inflow ports respectively provided at a position in which the reactant gas flows into each of the plurality of gas ...

Lithium battery with lithium salt mixture

Patent Number: 8101303
Publication Date: 2012-01-24
Inventors: Park, Yong-Chul; Hwang, Duck-Chul; Kim, Jeom-Soo; Lee, Jong-Hwa; Kim, Jin-Bum

A rechargeable lithium battery includes a positive electrode including a positive active material being capable of intercalating and deintercalating lithium ions; a negative electrode including a negative active material being capable of intercalating and deintercalating lithium ions; and an electrolyte including a non-aqueous organic solvent and a lithium salt. The positive electrode has a positive active mass density of 3.65 g/cc or more, and the lithium salt includes lithium ...

Redox shuttles for high voltage cathodes

Patent Number: 8101302
Publication Date: 2012-01-24
Inventors: Pham, Phat T.; Wang, Richard L.; Lamanna, William M.; Moshurchak, Lee; Bulinski, Michael J.; Jiang, Junwei; Dahn, Jeffrey R.

Overcharge protection is provided for rechargeable electrochemical lithium-ion cells. The electrolyte in the provided cells contains a cyclable redox shuttle molecule that can operate in cells with high voltage cathode ...

Lithium ion secondary battery

Patent Number: 8101301
Publication Date: 2012-01-24
Inventors: Han, Won Chull; Lee, Ha Young; Kim, Jin Hee; Kim, Chan Jung; Kim, Jae Woong; Kim, Jun Ho

A lithium ion secondary battery is provided. The lithium ion secondary battery generally comprises an electrode assembly, a container for accommodating the electrode assembly; and an electrolyte. The electrode assembly comprises two electrodes having opposite polarities and a separator. The separator comprises a porous membrane comprising clusters of ceramic particles. The porous membrane is formed by bonding the particle clusters with a binder. Each particle cluster is formed either by ...

Cathode active material for non-aqueous electrolyte secondary battery and its production method

Patent Number: 8101300
Publication Date: 2012-01-24
Inventors: Kawasato, Takeshi; Saito, Naoshi; Jitsugiri, Yukio; Kato, Tokumitsu; Wakasugi, Yukimitsu; Amagasaki, Yukiko

A cathode active material for a non-aqueous electrolyte secondary battery comprises a lithium-containing composite oxide powder, which is represented by the formula Li_pN_xM_yO_zF_awherein N is at least one element selected from the group consisting of Co, Mn and Ni, M is zirconium and optionally at least one element selected from the group consisting of Al, alkaline earth metal elements and transition metal elements other than the element ...

Method for producing, maturing and drying negative and positive plates for lead accumulators

Patent Number: 8101299
Publication Date: 2012-01-24
Inventors: Nitsche, Werner; Schwinhorst, Uwe

A method for producing, maturing and drying negative and positive plates for lead accumulators during which, in a pasting step, the plates are manufactured by introducing lead paste serving as an active material into an electrode support. The plates are directly placed one atop the other in stacks; the plates are matured at temperatures higher than 70° C. while maintaining a residual moisture of the active material, which prevents or reduces a spontaneous oxidation of the lead oxides, to ...

Method of fabricating fibres composed of silicon or a silicon-based material and their use in lithium rechargeable batteries

Patent Number: 8101298
Publication Date: 2012-01-24
Inventors: Liu, Feng-Ming; Green, Mino

A method of fabricating fibres of silicon or silicon-based material comprises the steps of etching pillars on a substrate and detaching them. A battery anode can then be created by using the fibres as the active material in a composite anode ...

Organic electrolytic solution and lithium battery using the same

Patent Number: 8101297
Publication Date: 2012-01-24
Inventors: Ryu, Young-gyoon; Lee, Dong-joon; Lee, Seok-soo

An organic electrolytic solution including a lithium salt; an organic solvent including a high dielectric solvent and a low boiling point solvent; and an additive compound containing an electron withdrawing group and hydrocarbon-based substituents. A lithium battery using the organic electrolytic solution can have improved cycle characteristics and cycle life through preventing decomposition of the ...

Battery having a charge voltage between 4.25 V and 6.00 V

Patent Number: 8101296
Publication Date: 2012-01-24
Inventors: Murakami, Takashi; Kubota, Tadahiko

A battery having a cathode, an anode, an electrolytic solution, and a separator is provided. An open circuit voltage per pair of cathode and anode in a perfect charging state lies within a range from 4.25V or more to 6.00V or less. The electrolytic solution contains: an additive of at least one kind selected from a group consisting of an acid anhydride and its derivative; and cyclic carbonic ester derivative having a halogen ...

Lithium secondary battery

Patent Number: 8101295
Publication Date: 2012-01-24
Inventors: Sawa, Shouichiro; Sunano, Taizou; Kamino, Maruo

A lithium secondary battery has a wound electrode assembly (5). The wound electrode assembly (5) has a negative electrode (2) having a negative electrode active material layer containing a negative electrode active material capable of alloying with lithium and having a filling density of 2.0 g/cc or less, a positive electrode (1) having a positive electrode active material layer containing a positive electrode active material made of a transition metal composite ...

Battery holding structure

Patent Number: 8101294
Publication Date: 2012-01-24
Inventor: Lu, Pen-Uei

A battery holding structure includes a battery receptacle, a receiving chamber, and a locking member. The battery is received in the battery receptacle, and the receiving chamber communicates with the battery receptacle. The locking member is received in the receiving chamber for locking the battery. The battery receptacle includes a base wall, and the battery holding structure also includes a push member. The push member is connected to the base wall elastically, and the push member can ...

System for altering temperature of an electrical energy storage device or an electrochemical energy generation device using high thermal conductivity materials based on states of the device

Patent Number: 8101293
Publication Date: 2012-01-24
Inventors: Kare, Jordin T.; Wood, Jr., Lowell L.; Chan, Alistair K.; Hyde, Roderick A.

A method is generally described which includes altering temperature of an electrical energy storage device or an electrochemical electrochemical energy generation device, includes providing at least one thermal control structure formed of a high thermal conductive material, the high thermal conductive material having a high k-value. The high k-value is greater than approximately 410 W/(m*K). The thermal control structures are disposed adjacent at least a portion of the electrical energy ...

Fuel cell power supply device

Patent Number: 8097373
Publication Date: 2012-01-17
Inventors: Fujino, Takeshi; Noguchi, Minoru; Komazawa, Eisuke; Hirakawa, Mitsuaki

It is an object of the present invention to provide a fuel cell power supply device that can realize a reduction in size and improvement of durability of an accumulating unit while maintaining output performance that is applicable when large output is requested. The fuel cell power supply device includes: an output judging unit 31 that judges whether the output of a fuel cell 1 is equal to or higher than a predetermined level with respect to electric power requested by a load ...

Non-aqueous electrolyte for secondary battery and non-aqueous electrolyte secondary battery

Patent Number: 8097368
Publication Date: 2012-01-17
Inventors: Chiga, Takanobu; Matsumoto, Hiroyuki; Mogi, Ryo; Omae, Osamu; Kobayashi, Masafumi

The present invention provides a non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte comprises a non-aqueous solvent and lithium salt as an electrolyte, and wherein the non-aqueous solvent contains chain fluorinated carboxylic acid ester represented by the formula CH₃COOCH₂CH_3-xF_x(wherein x is 2 or 3) and a film forming ...

Non-aqueous electrolyte secondary cell containing 1,3-dioxane compound

Patent Number: 8097367
Publication Date: 2012-01-17
Inventor: Takahashi, Kentaro

A non-aqueous electrolyte secondary cell with superior cycle characteristics is provided. The non-aqueous electrolyte secondary cell has a positive electrode, a negative electrode, and a non-aqueous electrolyte containing a non-aqueous solvent and an electrolyte salt. The non-aqueous solvent contains ethylene carbonate and propylene carbonate. The ratio of the ethylene carbonate to the total mass of the ethylene carbonate and the propylene carbonate is from 0.40 to 0.78. The non-aqueous ...

Alkaline battery separator comprising alkali-resistance synthetic fiber, fibrillated organic solvent-spun cellulose fiber and mercerized pulp, and alkaline primary battery

Patent Number: 8097366
Publication Date: 2012-01-17
Inventors: Nishiyama, Masakazu; Harada, Toshimitsu; Nagi, Hisashi; Kawai, Hiroyuki

An alkaline battery separator including 25 to 62% by mass of an alkali-resistance synthetic fiber, 5 to 25% by mass of a fibrillated organic solvent-spun cellulose fiber having a Canadian standard freeness value of 10 to 280 ml, and 33 to 50% by mass of a mercerized pulp having a Canadian standard freeness value of not less than 550 ml, wherein the fibrillated organic solvent-spun cellulose fiber intertwines with the mercerized ...

Electrode current collector and method for inspecting the same, electrode for battery and method for producing the same, and secondary battery and method for producing the same

Patent Number: 8097365
Publication Date: 2012-01-17
Inventors: Satori, Kotaro; Imoto, Rikako; Kita, Akinori; Iwama, Masayuki; Kawase, Kenichi

A current collector forming an electrode for battery. The electrode current collector is made of copper or a copper alloy, and has a front surface color and a back surface color, at least one color of which is a color belonging to a color space represented by:

50≦L*≦80, 5≦a*<60, 5≦b*<60,

where L*, a*, and b* are numeric values determined based on the L*a*b* calorimetric system described in JIS Z ...

Electroactive material for charge transport

Patent Number: 8097364
Publication Date: 2012-01-17
Inventor: Reynolds, Thomas A.

An electroactive material for charge transport. The material is formed of a plurality of nanocomponents including nanoparticles, in turn formed of conductive carbon-based clusters bound together by a conductive carbon-based cluster binder including nanoclusters and nanocluster binders, all having high densities of mobile charge carriers (electrons, electronic acceptors, ionic species). A terminal is electrically coupled to the nanoparticles for charge ...

Positive electrode material, its manufacturing method and lithium secondary battery

Patent Number: 8097363
Publication Date: 2012-01-17
Inventors: Kasai, Masahiro; Yuasa, Toyotaka; Nakajima, Genei

The object of the invention is to provide positive electrode material in which a discharge rate characteristic and battery capacity are hardly deteriorated in the environment of low temperature of −30° C., its manufacturing method and a lithium secondary battery using the positive electrode material. The invention is characterized by the positive electrode material in which plural primary particles are flocculated and a secondary particle is formed, and the touch length of the primary ...

Electrode active material and manufacturing method of same

Patent Number: 8097362
Publication Date: 2012-01-17
Inventor: Isono, Motoshi

Electrode active material of the invention is such that a Li₃PO₄phase is mixed in with an amorphous iron-phosphate complex having a Li_xFeP_yO_zcomposition. Applying the electrode active material of the invention to a secondary battery inhibits an irreversible reaction which reduces the irreversible capacity, thus enabling a high capacity to be maintained even when it is used at a high ...

Nanotube wiring

Patent Number: 8097361
Publication Date: 2012-01-17
Inventors: Exnar, Ivan; Zakeeruddin, Shaik Mohammed; Gratzel, Michael; Kavan, Ladislav

This invention concerns a novel method for surface derivatization of electrode materials for Li-ion batteries. The derivatization is based on adsorption of a composite assembly consisting of amphiphilic redox active molecule attached to single walled carbon nanotube (SWCNT). Its role consists in the enhancement of electronic conductivity of electrode materials, such as phosphate olivines, without requesting any significant increase of the electrode volume and mass. The SWCNT is linked to ...

Method for producing electrolyte solution for lithium ion battery and battery using same

Patent Number: 8097360
Publication Date: 2012-01-17
Inventors: Oe, Meguru; Sato, Keiji; Sakaguchi, Hiroaki

A method for producing an electrolyte solution for a lithium ion battery involving reacting a lithium halide selected from the group consisting of lithium fluoride, lithium chloride, lithium bromide, lithium iodide and a mixture of at least two of these, with phosphorus pentachloride and hydrogen fluoride in a nonaqueous organic solvent, thereby producing lithium hexafluorophosphate as an electrolyte of the electrolyte ...

Rapid exchange battery construction

Patent Number: 8097359
Publication Date: 2012-01-17
Inventors: Gau, Tien-Ho; Peng, Yu-Yin

A rapid exchange battery construction is applied in a battery module of an electric device to supply power. The battery module is pivoted with a rotatable handle, a catching member is disposed on the handle, and a fixing structure is erected on a base of a battery assembly structure. A pressing portion and a releasing opening are disposed at a top edge of the fixing structure. The handle is rotated to a gripping position for lifting the battery module to install the battery module on the ...

Cylindrical secondary battery

Patent Number: 8097358
Publication Date: 2012-01-17
Inventor: Lee, Jangho

A cylindrical rechargeable battery having an insulating gasket prevents an internal short circuit between a cylindrical can and a cap assembly generated by external factors. The cylindrical rechargeable battery includes an electrode assembly; a cylindrical can which has one open side and receives the electrode assembly through the open side, and is electrically connected to the received electrode assembly; and an insulating gasket which is connected to the inner surface of the open side of ...

Battery can and method for manufacturing the same

Patent Number: 8097357
Publication Date: 2012-01-17
Inventors: Morimoto, Toru; Hano, Masatoshi; Kitagawa, Kouhei; Omura, Hideo; Mori, Katsuhiko; Tomomori, Tatsuo; Suda, Masao; Omura, Hitoshi

A battery can of the present invention ensures a stable and favorable contact with an electrode and thus makes it possible to obtain a highly reliable battery excellent in high rate discharge characteristics. The battery can having an opening, including a cylindrical side portion and a bottom portion, of the present invention is formed from a steel plate. The steel plate has an Ni—Fe alloy layer on the inner face side of the battery can. The Ni—Fe alloy layer has an oxide layer ...

Battery pack

Patent Number: 8097356
Publication Date: 2012-01-17
Inventors: Horikoshi, Seita; Yonemochi, Kenshin

Provision of an extension-type battery pack which is improved in safety thereof against dropping and impact application. Although a battery pack is susceptible to damage caused by an impact since partial battery cells are located outside the outline of a notebook PC when it is mounted on the notebook PC, the battery pack is provided with a partition wall structure including an air space and a fireproof wall formed of a material which does not melt at a temperature of combustible gas ...

Protecting against incorrect battery polarity

Patent Number: 8097355
Publication Date: 2012-01-17
Inventor: Larsen, Glen C

Embodiments of battery holders with dual-contact assemblies are disclosed. One embodiment comprises a battery holder with a substrate and a spring dual-contact assembly, wherein the spring dual-contact assembly comprises a positive contact configured to contact a positive terminal of a battery positioned in the battery holder with the positive terminal oriented toward the spring dual-contact assembly and a negative contact configured to contact a negative terminal of a battery positioned in ...

Battery packs suitable for use with battery powered appliances

Patent Number: 8097354
Publication Date: 2012-01-17
Inventor: Sakakibara, Kazuyuki

Cooling air intake port (52), cooling air exhaust port (55), and securing walls (86, 87), which contact and secure the side surfaces of one or more battery cells (72), may be defined within two battery pack housing halves (50, 80). When battery pack (99) is assembled, at least one cooling air passage (91, 92) is defined by the side surfaces of the battery cells, the interior surface of the battery pack housing, and the securing walls. The ...