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1. 发明申请

US20230077326A1 SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME 有权
公开(公告)号：US20230077326A1
公开(公告)日：2023-03-16
申请号：US17930766
申请日：2022-09-09
申请人： PRIME PLANET ENERGY & SOLUTIONS, INC. , TOYOTA JIDOSHA KABUSHIKI KAISHA , PRIMEARTH EV ENERGY CO., LTD.
发明人： Keisuke ASAKURA , Takaaki IZUMOTO , Yusuke TAKASHI
IPC分类号： H01M50/198 , H01M50/103 , H01M50/188 , H01M10/0569 , H01M10/058
摘要： A secondary battery with a reduced degree of increase in internal pressure over time, is provided. In a preferred embodiment, a secondary battery including: an electrode body, a battery case, an electrode terminal, and a gasket sandwiched between the battery case and the electrode terminal is provided. The secondary battery is configured such ghat a parameter K calculated using the following equation (1): K=Wi/(VrGH2) (1) (where Wi represents an initial capacity (Ah) of the secondary battery, Yr represents a volume (cm3) of void in the battery case, and GH2, represents an H2 gas permeability coefficient (cm3·cm)/(cm2·s·cmHg) of the gasket at 60° C.) satisfies 0.43×108 or more to 0.59×108 or less.

2. 发明申请

US20230073919A1 BATTERY MODULE AND SPACER 有权
公开(公告)号：US20230073919A1
公开(公告)日：2023-03-09
申请号：US17683480
申请日：2022-03-01
申请人： PRIMEARTH EV ENERGY CO., LTD.
发明人： Kousuke MURAISHI
IPC分类号： H01M50/289 , H01M10/613 , H01M10/647 , H01M10/6557 , H01M10/6561 , H01M50/209
摘要： A spacer of a battery module includes a plurality of bars provided extending in a width direction of adjacent battery cells and arranged at an interval from each other, a first fin, and a second fin. The first fin of the battery module takes a shape extending upward from the bar toward one of the battery cells and contact a principal surface of the battery cell. The second fin takes a shape extending downward from the bar toward the other battery cell and contact a principal surface of the other battery cell. A fin length of the first fin and a fin length of the second fin are each smaller than the interval between the bars. The sum of those fin lengths is larger than the interval between the bars.

3. 发明申请

US20220029254A1 SECONDARY BATTERY MANUFACTURING METHOD AND SECONDARY BATTERY 有权
公开(公告)号：US20220029254A1
公开(公告)日：2022-01-27
申请号：US17374797
申请日：2021-07-13
申请人： PRIMEARTH EV ENERGY CO., LTD.
发明人： Shigeki SAITO
IPC分类号： H01M50/536 , B23K13/01 , B23K26/22 , H01M50/566
摘要： A secondary battery manufacturing method according to an example embodiment of the present disclosure includes an electromagnetic welding step of joining together a first metallic component and a second metallic component included in the secondary battery by electromagnetic welding, and a laser welding step of applying laser light to weld an unjoined part of the first metallic component and the second metallic component, the unjoined part being not joined by the electromagnetic welding step.

4. 发明授权

US11217867B2 Manufacturing method for secondary battery and manufacturing apparatus for secondary battery 有权
公开(公告)号：US11217867B2
公开(公告)日：2022-01-04
申请号：US16728535
申请日：2019-12-27
申请人： J.E.T. CO., LTD. , PRIMEARTH EV ENERGY CO., LTD.
发明人： Hiroyuki Nishimura , Shigeki Hashimoto , Hideaki Yoshio , Shigeki Saito , So Kudo , Yuji Yamasaki , Kunihiro Takaoka , Hidenori Tagomori
IPC分类号： H01M50/00 , H01M50/636 , H01M50/60
摘要： A manufacturing method for a secondary battery and a manufacturing apparatus for a secondary battery that are applicable to a secondary battery in which an electrolyte solution injection hole has a diameter of 1.5 mm or more are provided. The secondary battery includes a battery case including a cover plate provided with an electrolyte solution injection hole, and a sealing member sealing the electrolyte solution injection hole. The manufacturing method includes a preparing step and a press-fitting step. The preparing step is preparing a cell in which, after an electrolyte solution is injected to the battery case through the electrolyte solution injection hole, the sealing member is disposed on the electrolyte solution injection hole. The press-fitting step is press-fitting the sealing member into the electrolyte solution injection hole while applying press-fitting load and ultrasonic vibration with a frequency of 20 kHz or more in parallel to a press-fitting direction.

5. 发明申请

US20210336300A1 METHOD AND DEVICE FOR DETERMINING STATE OF RECHARGEABLE BATTERY 有权
公开(公告)号：US20210336300A1
公开(公告)日：2021-10-28
申请号：US17239353
申请日：2021-04-23
申请人： PRIMEARTH EV ENERGY CO., LTD.
发明人： Tamotsu FUKUMA , Hitoshi SUZUKI , Daisuke KOBA
IPC分类号： H01M10/48 , B60L58/12 , G01R31/3842 , H01M50/569
摘要： A rechargeable battery state determination method determines whether a rechargeable battery is in a micro-short-circuit-prone state, which is a state that is highly likely to form a micro-short circuit. The rechargeable battery state determination method includes measuring an electron transfer resistance of the rechargeable battery by applying a voltage or current having a predetermined or higher frequency to an electrode system of the rechargeable battery, determining whether an inter-electrode distance is satisfactory based on a comparison of the measured electron transfer resistance of the rechargeable battery with a predetermined lower limit threshold value, in which the determining whether an inter-electrode distance is satisfactory including determining that the inter-electrode distance is satisfactory when the measured electron transfer resistance of the rechargeable battery is greater than or equal to the lower limit threshold value, and determining that the rechargeable battery is a conforming piece when the inter-electrode distance is satisfactory.

6. 发明授权

US10976372B2 Battery state estimation device and battery state estimation method 有权
公开(公告)号：US10976372B2
公开(公告)日：2021-04-13
申请号：US16231176
申请日：2018-12-21
申请人： PRIMEARTH EV ENERGY CO., LTD.
发明人： Daisuke Koba , Yosuke Murota , Shinobu Minatani , Hiroki Nakafuji , Daisuke Shinohara , Tetsuya Osaka
IPC分类号： G01R31/396 , G01R31/389 , G01R31/374 , G01R31/36 , G01R31/367
摘要： A battery state estimation device for estimating a charged electric charge quantity of a rechargeable battery includes an impedance measurement unit configured to measure a plurality of complex impedances of the rechargeable battery by supplying measurement power to the rechargeable battery, a parameter calculation unit configured to calculate a parameter that includes a ratio of a difference between measurement angular velocities of two complex impedances in a diffusion region among the measured complex impedances to a difference between components of the two complex impedances, and an electric charge quantity estimation unit configured to estimate a charged electric charge quantity of the rechargeable battery based on the calculated parameter and preset correlated information between the charged electric charge quantity of the rechargeable battery and the parameter.

7. 发明授权

US10281530B2 Battery capacity measuring device and battery capacity measuring method 有权
公开(公告)号：US10281530B2
公开(公告)日：2019-05-07
申请号：US15693381
申请日：2017-08-31
申请人： PRIMEARTH EV ENERGY CO., LTD.
发明人： Hiroki Nishi , Daisuke Koba , Tetsuya Osaka
IPC分类号： G01R31/389 , G01R31/367 , H01M10/48 , H01M10/34
摘要： A battery capacity measuring device that measures the battery capacity of a rechargeable battery includes an impedance measurement unit that measures the complex impedance of a rechargeable battery, which is a subject to measurement, based on application of measurement AC power, a parameter calculation unit that calculates a parameter that is a ratio of a difference between measured angular speeds of two complex impedances having different measured angular speeds in a diffusion region among a plurality of measured complex impedances to a difference between components of the two complex impedances, and a capacity calculation unit that calculates the capacity of the rechargeable battery based on information that is set in advance and indicates the relationship between the capacity of the rechargeable battery and the parameter and a parameter calculated by the parameter calculation unit.

8. 发明授权

US09843036B2 Alkaline battery and method for manufacturing alkaline battery 有权
公开(公告)号：US09843036B2
公开(公告)日：2017-12-12
申请号：US14839935
申请日：2015-08-29
申请人： PRIMEARTH EV ENERGY CO., LTD.
发明人： Kenichi Maehara , Kazuki Nakano , Hiroyuki Sakamoto
IPC分类号： H01M4/32 , H01M10/26 , H01M10/30 , H01M4/29 , H01M4/62 , H01M4/36 , H01M10/44
摘要： A method for manufacturing an alkaline battery includes assembling an alkaline battery with a positive electrode, a negative electrode, a separator, and an electrolyte. The positive electrode includes cobalt and a positive electrode active material particle, which has a main component that is nickel hydroxide. The positive electrode active material particle has a coating layer that includes cobalt oxyhydroxide. At least one of the positive electrode, the negative electrode, and the electrolyte includes a tungsten element. The method further includes charging the assembled alkaline battery so that the cobalt in the positive electrode is deposited as cobalt oxyhydroxide on a surface of the positive electrode active material particle.

9. 发明授权

US09525169B2 Nickel-hydrogen storage battery 有权
标题翻译：镍氢蓄电池
公开(公告)号：US09525169B2
公开(公告)日：2016-12-20
申请号：US14225172
申请日：2014-03-25
申请人： PRIMEARTH EV ENERGY CO., LTD.
发明人： Shinichiro Ito , Yuki Sakito , Hiroyuki Sakamoto , Katsumi Kashiwagi
IPC分类号： H01M4/38 , H01M10/30 , H01M10/42
CPC分类号： H01M4/385 , H01M10/30 , H01M2010/4292 , Y02E60/124
摘要： A nickel-hydrogen storage battery includes a positive electrode, a negative electrode using an AB5 based hydrogen-absorbing alloy, and a separator arranged between the positive and negative electrodes. The AB5 based hydrogen-absorbing alloy includes an A element, which is a constituent element of a misch metal, and a B element, which includes nickel and cobalt. The ratio of the amount of substance of the B element to that of the A element is 5.2 or more and 5.4 or less. The ratio of the amount of substance of cobalt to that of the A element is 0.15 or more and 0.4 or less. The liquid retention volume (V1) and the true volume (V2) of the separator, the theoretical capacity of the negative electrode (C1), and the theoretical capacity of the positive electrode (C2) satisfy the following expression. 2.0≦V1/V2×C1/C2≦3.1

10. 发明授权

US09354278B2 Device for detecting normal, abnormal or deteriorated battery state 有权
标题翻译：用于检测正常，异常或恶化的电池状态的装置
公开(公告)号：US09354278B2
公开(公告)日：2016-05-31
申请号：US14343720
申请日：2013-01-23
申请人： Primearth EV Energy Co., Ltd.
发明人： Daisuke Koba , Sachio Takeda , Katsunori Maegawa , Naoto Sato , Tetsuya Osaka
IPC分类号： H01M10/46 , G01R31/36
CPC分类号： G01R31/3662 , G01R31/3624 , G01R31/3651 , G01R31/3679
摘要： This device and method use the complex impedance of a rechargeable battery to detect the state of the rechargeable battery. A computer determines the slope of the complex impedance at least two different frequencies in a diffusion region of the rechargeable battery when a straight-line approximation has been made, and compares the slope with a threshold value. If the slope is greater than or equal to the threshold value, the computer determines that the battery has a normal capacity balance, and if the slope is less than the threshold value, the computer determines that the battery has an abnormal unbalanced capacity. Furthermore, if the magnitude of an imaginary axis component of the complex impedance in the diffusion region of the rechargeable battery is greater than the threshold battery, the computer determines that the battery has an abnormal capacity balance, and if said magnitude is less than or equal to the threshold value, the computer determines that the battery has a normal capacity balance.
摘要翻译：该装置和方法使用可再充电电池的复阻抗来检测可再充电电池的状态。当进行直线近似时，计算机确定复数阻抗在可再充电电池的扩散区域中的至少两个不同频率的斜率，并将斜率与阈值进行比较。如果斜率大于或等于阈值，则计算机确定电池具有正常的容量平衡，并且如果斜率小于阈值，则计算机确定电池具有异常的不平衡容量。此外，如果可再充电电池的扩散区域中的复阻抗的虚轴分量的大小大于阈值电池，则计算机确定电池具有异常容量平衡，并且如果所述幅度小于或等于计算机确定电池具有正常的容量平衡。

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