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公开(公告)号：US20210218114A1
公开(公告)日：2021-07-15
申请号：US17059976
申请日：2019-02-25
发明人： Koji CHIDA , Yasuyuki AIZAWA , Masatake FUKE
IPC分类号： H01M50/502 , H01M50/262 , H01M50/244 , H01M50/543 , H01M50/204
摘要： Please substitute the new Abstract submitted herewith for the original Abstract: A secondary battery module includes a plurality of battery blocks each obtained by stacking a plurality of battery cells. The secondary battery module includes a holding member adapted to hold the plurality of battery blocks and including a pair of opposed end plates, a pair of opposed side plates, and a section plate arranged between the adjacent battery blocks to partition the battery blocks; and an inter-block bus bar provided across the section plate and adapted to electrically connect the adjacent battery blocks. The inter-block bus bar has a fuse portion.
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公开(公告)号：US11011812B2
公开(公告)日：2021-05-18
申请号：US15322746
申请日：2014-07-24
发明人： Kazuaki Urano , Keisuke Sawada , Shou Saimaru , Naoki Kojima
IPC分类号： H01M50/578 , H01M10/04 , H01M50/342 , H01M10/0587
摘要： A secondary battery includes a diaphragm which is disposed on a current path between a current collector plate connected to a wound electrode group in a battery container and an external terminal, deforms when an internal pressure of the battery container increases, and breaks the current path. The diaphragm has a convex portion which protrudes to the current collector plate. The current collector plate has a through-hole into which the convex portion is inserted. An inner wall portion of the through-hole and a side wall portion of the convex portion facing each other are welded.
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83.发明申请公开(公告)号：US20210091379A1
公开(公告)日：2021-03-25
申请号：US16954285
申请日：2018-11-19
发明人： Yuki TAKEI , Shuichi SUZUKI , Takeshi MIKI , Hironori SASAKI
IPC分类号： H01M4/36 , H01M10/0525 , H01M4/62 , H01M4/13
摘要： Provided is a positive electrode for lithium ion secondary cell that includes an electrolyte holding layer excellent in electron conductivity, and a lithium ion secondary cell using the same. The present invention relates to a positive electrode for lithium ion secondary cell that includes a positive electrode current collector foil and positive electrode mixture layers laminated on both surfaces of the positive electrode current collector foil. The positive electrode mixture layer includes a first positive electrode active material layer, an electrolyte holding layer, and a second positive electrode active material layer. The first positive electrode active material layer, the electrolyte holding layer, and the second positive electrode active material layer contain positive electrode active materials, binders, and conductive agents containing carbonaceous material. A conductive agent ratio of the electrolyte holding layer is higher than conductive agent ratios of the first positive electrode active material layer and the second positive electrode active material layer. A positive electrode active material ratio and a binder ratio of the electrolyte holding layer are lower than positive electrode active material ratios and binder ratios of the first positive electrode active material layer and the second positive electrode active material layer.
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公开(公告)号：US20210057779A1
公开(公告)日：2021-02-25
申请号：US16957657
申请日：2018-11-28
发明人： Hironori SASAKI , Takeshi MIKI , Shuichi SUZUKI
IPC分类号： H01M10/0568 , H01M10/0525 , H01M10/0569
摘要： Provided is an electrolyte solution for lithium ion secondary cell capable of suppressing a decomposition reaction of a graphite negative electrode by optimizing an amount of a cyclic carbonate, and capable of improving a cell performance in a low temperature range. The electrolyte solution for lithium ion secondary cell of the present invention includes; 10 volume % to 20 volume % of ethylene carbonate (EC) and/or propylene carbonate (PC) as a cyclic carbonate; 0.38 mol/L to 0.75 mol/L of at least one selected from lithium hexafluorophosphate (LiPF6), lithium tetrafluoroborate (LiBF4), or lithium bis(oxalate)borate (LiBOB) as a first lithium salt; and a lithium imide salt. A sum of the lithium imide salt and the first lithium salt is in a range of 0.5 mol/L to 1.5 mol/L, and a mole ratio of the cyclic carbonate/the first lithium salt is in a range of 3 to 5.
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公开(公告)号：US20240274985A1
公开(公告)日：2024-08-15
申请号：US18567008
申请日：2022-03-23
发明人： Masanari ODA , Osamu KUBOTA , Koji KOSAI , Yasuyuki AIZAWA , Tatsuhiko KAWASAKI , Yoshiyuki TAKAMORI
IPC分类号： H01M50/503 , H01M50/209 , H01M50/516 , H01M50/55 , H01M50/569
CPC分类号： H01M50/503 , H01M50/569 , H01M50/209 , H01M50/516 , H01M50/55
摘要： In a battery pack with bus bars, a first conductive member includes a first joining portion joined to a first positive electrode terminal and a first extending portion extending from the first joining portion, a second conductive member includes a second joining portion joined to a second negative electrode terminal and a second extending portion extending from the second joining portion, the first conductive member and the second conductive member are made of different materials, the first conductive member and the second conductive member are connected by a third joining portion, and the third joining portion is formed on an overlapping portion of the first extending portion and the second extending portion with a distance closer to the third joining portion out of a distance between the first joining portion and the third joining portion and a distance between the second joining portion and the third joining portion.
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公开(公告)号：US20240186664A1
公开(公告)日：2024-06-06
申请号：US18554360
申请日：2021-09-28
发明人： Akira UNNO , Tatsuo SUGAWARA , Hiroshi HOSHI
IPC分类号： H01M50/569 , H01M50/209 , H01M50/296 , H01M50/298 , H01M50/507 , H01M50/516
CPC分类号： H01M50/569 , H01M50/209 , H01M50/296 , H01M50/298 , H01M50/507 , H01M50/516
摘要： A battery pack has a plurality of batteries, a bus bar connected to electrode terminals of the plurality of batteries, a terminal connected to the bus bar, and an electric wire connected to the terminal. The terminal has a first base portion, a second base portion, and a protrusion portion. The first base portion is located on one end side in a predetermined direction of the terminal and is bonded to the bus bar in a vertical direction with respect to the predetermined direction by ultrasonic welding. The second base portion is located on the other end side in the predetermined direction of the terminal and is connected to the electric wire. The protrusion portion is located between the first base portion and the second base portion and protrudes in the vertical direction.
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公开(公告)号：US11923519B2
公开(公告)日：2024-03-05
申请号：US16334230
申请日：2018-01-31
发明人： Hirofumi Takahashi
IPC分类号： H01M10/613 , H01M10/625 , H01M10/647 , H01M10/6554 , H01M50/209 , H01M50/224
CPC分类号： H01M10/613 , H01M10/625 , H01M10/647 , H01M10/6554 , H01M50/209 , H01M50/224
摘要： A temperature rising between unit cells in a cell group is suppressed. A battery pack disclosed in the invention includes a case, a cell group which connects a plurality of unit cells and is disposed to abut on a bottom surface of the case, and a fixing member which fixes the cell group. The fixing member includes a heat path that links from the upper surface of a battery to the side surface of the case.
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公开(公告)号：US20230402670A1
公开(公告)日：2023-12-14
申请号：US18034973
申请日：2021-12-22
发明人： Hironori SASAKI
IPC分类号： H01M10/48 , G01R31/392 , G01R31/387 , G01R31/367 , H01M10/44
CPC分类号： H01M10/486 , G01R31/392 , H01M10/443 , G01R31/367 , G01R31/387
摘要： A battery control device (an assembled battery control unit 150) has a degraded battery state estimation unit 521, a storage unit 180, and an upper limit voltage estimation unit 1522. The degraded battery state estimation unit 521 estimates a first degraded state of a battery on the basis of at least any one of a use history, a capacity retention rate, and an internal resistance increase rate of the battery and estimates a second degraded state of constituent elements inside the battery with respect to each type of the battery. The storage unit 180 stores information regarding an upper limit voltage of chargeable electric power with respect to each temperature of the battery. The upper limit voltage estimation unit estimates the upper limit voltage of the chargeable electric power of the battery on the basis of the above-described information. The upper limit voltage estimation unit 1522 updates the above-described information on the basis of the first degraded state and the second degraded state.
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公开(公告)号：US11699832B2
公开(公告)日：2023-07-11
申请号：US16633116
申请日：2018-08-03
IPC分类号： H01M50/507 , H01M50/517 , H01M50/543 , H01M50/209 , H01M50/204
CPC分类号： H01M50/507 , H01M50/204 , H01M50/209 , H01M50/517 , H01M50/543
摘要： To prevent an increase in the electrical resistance between a terminal for external connection and a cell terminal of a battery cell of a battery cell group. A battery module 100 includes a battery cell group 10, a pair of end plates 20, a bus bar 30, and a fastening member 40. The end plate 20 includes a recess 21 adapted to partially house the fastening member 40 in a mutually movable manner in one direction (X-direction) corresponding to the stacked direction of the plurality of battery cells 1. The battery module 100 also has a gap S between an inner side wall 21a of the recess 21 and the fastening member 40 in the one direction (X-direction).
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公开(公告)号：US11646474B2
公开(公告)日：2023-05-09
申请号：US17059976
申请日：2019-02-25
发明人： Koji Chida , Yasuyuki Aizawa , Masatake Fuke
IPC分类号： H01M50/502 , H01M50/262 , H01M50/543 , H01M50/244 , H01M50/204 , H01M50/50 , H01M50/296 , H01M50/291 , H01M50/583 , H01M50/209
CPC分类号： H01M50/502 , H01M50/204 , H01M50/209 , H01M50/244 , H01M50/262 , H01M50/291 , H01M50/296 , H01M50/50 , H01M50/543 , H01M50/583
摘要： A secondary battery module includes a plurality of battery blocks each obtained by stacking a plurality of battery cells. The secondary battery module includes a holding member adapted to hold the plurality of battery blocks and including a pair of opposed end plates, a pair of opposed side plates, and a section plate arranged between the adjacent battery blocks to partition the battery blocks; and an inter-block bus bar provided across the section plate and adapted to electrically connect the adjacent battery blocks. The inter-block bus bar has a fuse portion.
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