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公开(公告)号：US20240269772A1
公开(公告)日：2024-08-15
申请号：US18396962
申请日：2023-12-27
IPC分类号： B23K26/24
CPC分类号： B23K26/24
摘要： There is provided a laser welding device that welds an object to be welded including two or more conductors contacting each other. The laser welding device includes: a welding laser irradiation unit that faces a first face of the object, the welding laser irradiation unit welding the object by irradiating the object with laser light; and a preheating device preheating the object. The preheating device includes a first electrode including a first contact part contacting the first face, and a second electrode including a second contact part contacting a second face of the object, the second face being on an opposite side to the first face. The preheating device heats at least part of the object by heat generated when a current flows in the object via the first electrode and the second electrode.
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2.发明申请公开(公告)号：US20210311124A1
公开(公告)日：2021-10-07
申请号：US17217443
申请日：2021-03-30
IPC分类号： G01R31/382 , H01M10/42 , H01M10/48 , G01R31/367 , G01R31/396
摘要： A battery diagnosis device mounted on a vehicle includes a processor that acquires information about a battery and executes diagnosis of the state of the battery. The processor is configured to determine whether there is abnormality about a first item based on a result of a determination of whether a first state is matched, and the determination of whether the first state is matched is based on the information about the battery. The processor is configured to end the diagnosis of the battery, when the processor determines that there is no abnormality about the first item. The processor is configured to continue the diagnosis of the battery and determine whether there is abnormality about the first item, as a second determination, when the processor determines that there is abnormality about the first item.
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公开(公告)号：US20210061119A1
公开(公告)日：2021-03-04
申请号：US17000521
申请日：2020-08-24
摘要： A vehicle control device configured to control charge and discharge of a battery mounted on a vehicle includes an obtaining unit configured to obtain a parking time of the vehicle, a setting unit configured to derive a charge voltage of the battery based on at least the parking time obtained by the obtaining unit, and a voltage control unit configured to control charge of the battery based on the charge voltage of the battery derived by the setting unit when the vehicle is traveling.
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公开(公告)号：US20210257676A1
公开(公告)日：2021-08-19
申请号：US17089346
申请日：2020-11-04
发明人： Kohei TAKAHASHI , Haruyuki ONODA
IPC分类号： H01M10/42 , G01R19/165 , H02J7/00
摘要： A battery control device that controls a connection between a battery and a load includes a first switch inserted between the battery and the load, a bypass circuit between the battery and the load, which is connected in parallel to the first switch and includes a second switch on the battery side, a diode unit composed of two diodes, and a third switch that are connected in series, an instruction unit that instructs the first, second, and third switches to open or close, an acquisition unit that acquires voltages of both ends of the second and third switches, respectively, and a diagnosis unit that diagnoses whether the first switch operates normally based on open or closed states of the switches and the voltages.
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公开(公告)号：US20240269778A1
公开(公告)日：2024-08-15
申请号：US18398316
申请日：2023-12-28
CPC分类号： B23K26/702 , B23K26/083 , B23K26/21
摘要： A laser welding device that welds an object to be welded including two or more members includes: a welding laser irradiation unit that faces the object, the welding laser irradiation unit welding the object by irradiating a target portion of the object with laser light; and a heating device disposed on an opposite side to the welding laser irradiation unit seen from the object, the heating device preheating the target portion by heating the target portion from the opposite side.
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公开(公告)号：US20240269771A1
公开(公告)日：2024-08-15
申请号：US18396833
申请日：2023-12-27
IPC分类号： B23K26/24
CPC分类号： B23K26/24
摘要： A laser welding method is a laser irradiating method for irradiating with a laser beam an irradiation target surface of a welding target formed by a plurality of overlaid metal plates, and welding the plurality of metal plates, the plurality of metal plates include a first metal plate that forms the irradiation target surface, and a second metal plate, and the laser welding method includes: a first process of irradiating the irradiation target surface with the laser beam, thereby welding the plurality of metal plates, and forming a welded part; and a second process of irradiating with the laser beam a target range of the irradiation target surface including at least part of the welded part, and remelting at least the first metal plate without remelting the second metal plate among the plurality of metal plates after the first process.
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公开(公告)号：US20240235214A9
公开(公告)日：2024-07-11
申请号：US18448207
申请日：2023-08-11
发明人： Kohei TAKAHASHI
IPC分类号： H02J7/00 , B60L58/22 , G01R31/388
CPC分类号： H02J7/0016 , B60L58/22 , G01R31/388 , H02J7/0049
摘要： The control unit includes: when an absolute value of a difference between a full charge capacity of a 1 cell and a full charge capacity of a 2 cell is equal to or larger than a 1 threshold value, equalization is performed so that an absolute value of a difference between a charge rate of a 1 cell and a charge rate of a 2 cell at the time of full charge is less than a 2 threshold value, and when an absolute value of a difference between a voltage of a 1 cell and a voltage of a 2 cell is equal to or larger than a 3 threshold value, equalization is performed so that an absolute value of a difference between a voltage of a 1 cell and a voltage of a 2 cell becomes less than a 3 threshold value.
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公开(公告)号：US20210088590A1
公开(公告)日：2021-03-25
申请号：US16882803
申请日：2020-05-26
发明人： Kohei TAKAHASHI , Takayuki AKAISHI
IPC分类号： G01R31/367 , H01M10/48 , G01R31/389 , G01R31/392
摘要： A sensor abnormality determination device that determines abnormality in a current sensor includes an acquisition unit configured to acquire a closed circuit voltage of the battery and acquires an open circuit voltage of the battery obtained from a state of charge of the battery when the closed circuit voltage is acquired based on a predetermined SOC−OCV characteristic curve, a derivation unit configured to derive a first voltage difference which is a difference value between the closed circuit voltage and the open circuit voltage and a second voltage difference which is a change amount of a voltage obtained from a current of the battery detected by the current sensor and an internal resistance, and a determination unit configured to determine whether the current sensor is abnormal based on the first and the second voltage difference when the first voltage difference is equal to or larger than a first predetermined value.
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公开(公告)号：US20200341068A1
公开(公告)日：2020-10-29
申请号：US16809961
申请日：2020-03-05
IPC分类号： G01R31/389 , G01R31/392 , G01R31/3842 , G01R31/374
摘要： An auxiliary device battery sensor measures current and voltage of an auxiliary device battery. On the basis of a peak value and frequency of current measured by the auxiliary device battery sensor at a time when the current and the voltage of the auxiliary device battery change in accordance with requirements of a load, a monitoring ECU sets a waveform for measurement that is for measuring resistance of the auxiliary device battery. Further, the monitoring ECU controls a DDC that is connected to the auxiliary device battery, such that a waveform of the current of the auxiliary device battery becomes the waveform for measurement. The monitoring ECU estimates resistance of the auxiliary device battery on the basis of current and voltage measured by the auxiliary device battery sensor at a time of controlling the DDC.
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公开(公告)号：US20190135351A1
公开(公告)日：2019-05-09
申请号：US16130382
申请日：2018-09-13
IPC分类号： B62D27/02
摘要： There is provided a joint structure for a vehicle, the joint structure including: a plate-shaped first member; a plate-shaped second member, of which at least a portion is superposed with the first member in a plate thickness direction of the first member; plural crimped portions provided in a region at which the first member and the second member are superposed, the first member and second member being joined at the crimped portions by mechanical clinching from a side at which the first member is disposed; and a reinforcing portion provided at the first member, the reinforcing portion being inflected toward a substantially normal direction in a vicinity of the crimped portions.
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