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公开(公告)号：US20240393375A1
公开(公告)日：2024-11-28
申请号：US18795243
申请日：2024-08-06
Applicant: Panasonic Holdings Corporation
Inventor： MANABU GOKAN , YUKI TANAKA , TAKUMA IKEDA , AYA KUROKAWA , HIROYUKI TANI
Abstract: A power reception apparatus includes a main rectifier circuit unit that rectifies received power and outputs rectified power to a load, a sub rectifier circuit unit connected in parallel with a power reception unit of the main rectifier circuit unit, and a measurement unit that measures power of an output unit of the sub rectifier circuit unit.
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公开(公告)号：US20240175960A1
公开(公告)日：2024-05-30
申请号：US18386170
申请日：2023-11-01
Inventor： Luigi Franchini , Onno Martens , Roberto Casiraghi
CPC classification number: G01R35/005 , G01R3/00 , G01R19/0038 , G01R19/22
Abstract: A hybrid current sense system and methods can comprise: a switch coupled to a phase output and coupled to a voltage rail; an amplifier coupled to the switch and the amplifier configured to detect current information of the switch; a current detector coupled between the switch and the voltage rail, the current detector configured to determine a measured current for the switch; and a current calibrator configured to calibrate the current information for the switch based on the measured current.
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公开(公告)号：US11843097B2
公开(公告)日：2023-12-12
申请号：US17016233
申请日：2020-09-09
Applicant: AVL Powertrain Engineering, Inc.
Inventor： Bruce Falls , Scott Kochan , Alwin Lutz , Brian Moran , Jeff Taberski
IPC: H01M10/48 , H01M10/42 , G01R31/392 , G01R19/22 , H02M3/335 , G01R31/3842
CPC classification number: H01M10/482 , G01R19/22 , G01R31/3842 , G01R31/392 , H01M10/425 , H02M3/33576 , H01M2010/4271 , H01M2220/20
Abstract: A cell management module for a power supply module including a plurality of power cells includes at least one cell-sensing circuit and a current measurement circuit connected to the at least one cell-sensing circuit. The at least one cell-sensing circuit includes a transformer having a first winding and a second winding inductively coupled to the first winding. A first sub-circuit of the cell-sensing circuit includes the first winding of the transformer and is operable to selectively pulse a first signal through the first winding. A second sub-circuit of the cell-sensing circuit includes the second winding of the transformer and one of the power cells of the power supply module. The current measurement circuit is connected to the first sub-circuit of the at least one cell-sensing circuit and infers a voltage of the power cell based on a measured current of the first signal.
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公开(公告)号：US11656252B2
公开(公告)日：2023-05-23
申请号：US17518720
申请日：2021-11-04
Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
Inventor： Sven Lill , Harald Schöffler , Daniel Simon
Abstract: A measurement apparatus has a current sensor and at least one A/D converter, which current sensor has at least two channels (CH1, CH2), via which channels (CH1, CH2) the current sensor (30) respectively provides a measurement signal (CH1_SIG, CH2_SIG) characterizing the current. The at least two channels (CH1, CH2) include a first channel (CH1) and a second channel (CH2), which second channel (CH2) is designed to measure a greater maximum current than the first channel (CH1). Also described is a method for measuring a current flowing through a conductor by way of the measurement apparatus.
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公开(公告)号：US20220302738A1
公开(公告)日：2022-09-22
申请号：US17837863
申请日：2022-06-10
Inventor： Chen TIAN , Feng JI , Jialiang ZHANG
Abstract: Provided are an adapter and a charging method. The adapter includes: at least one filter capacitor (210) having a capacitance smaller than a predetermined threshold and configured to filter a rectified alternating current to obtain a pulsating direct current; and a voltage transformation module (220) configured to transform the pulsating direct current to obtain a voltage and a current for charging a device to be charged. The adapter for charging a battery is provided, the volume of the adapter can be reduced and the miniaturization of the volume of the adapter can be realized.
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Patent Agency Ranking
公开(公告)号：US11445592B2
公开(公告)日：2022-09-13
申请号：US16092915
申请日：2017-04-11
Applicant: Savant Systems, Inc.
Inventor： Nicholas David Pennycooke
Abstract: The present disclosure provides apparatuses and methods for measuring power for a lighting control system. The present disclosure provides apparatuses and methods for measuring power for a lighting control system. The includes a lighting control module configured to cause a transmission of a quantity of electrical power to a lighting circuit of a light fixture electrically connected to the lighting control module, a detector circuit positioned in the lighting control module, and a controller in electrical communication with the detector circuit. The controller is specially programmed to correlate a quantity of electrical power transmitted to the lighting circuit to the response of the lighting circuit. The controller is further programmed to determine a power correction factor based on the correlation between the quantity of electrical power transmitted and the response. The power correction factor is configured to alter the response of the lighting circuit to a predetermined value.
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公开(公告)号：US11435426B2
公开(公告)日：2022-09-06
申请号：US16738096
申请日：2020-01-09
Applicant: International Business Machines Corporation
Inventor： Miguel E. Perez , Michael Sperling , Michael Floyd , John Francis Bulzacchelli
Abstract: Aspects of the invention include a circuit having a power header configured to couple to a power supply and to provide an output voltage. A sense circuit is coupled to the power header to receive the output voltage, the sense circuit including a replica voltage circuit coupled to a replica power header circuit and a transistor, the replica voltage circuit being configured to provide a replicated output voltage in accordance with the output voltage, the replica power header circuit being configured to couple to the power supply and the replicated output voltage to generate a replica current, the transistor being configured to deliver the replica current.
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公开(公告)号：US20220099714A1
公开(公告)日：2022-03-31
申请号：US17483106
申请日：2021-09-23
Inventor： Shaoli Ye , Gina M Kelso , David J. Lath , Wlliam Michael James Holland , John Jude O' Donnell
IPC: G01R19/165 , G01R31/396 , G01R31/367 , G01R19/22
Abstract: The disclosure relates to accurately determining a DC energy signal, such as a DC current or DC voltage, which may be particularly useful when controlling a formation/testing current of a battery cell during formation and/or testing. In the battery formation/testing context, a current sensor is used to measure the current of the battery cell, which is used as a feedback signal for controlling the current to achieve a target current. The transfer function of the current sensor is used to improve the accuracy of the current measurement. Because the transfer function can be regularly determined during formation/testing, a lower-cost current sensor with relatively poor temperature coefficient may be used. Any change in the gain of the current sensor may be detected by the transfer function determination and corrected for. Therefore, high current control accuracy may be achieved at lower cost.
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公开(公告)号：US20210373058A1
公开(公告)日：2021-12-02
申请号：US17181662
申请日：2021-02-22
Applicant: DELTA ELECTRONICS, INC.
Inventor： Li-Ching YANG , Wen-Lung HUANG , Sheng-Hua LI
Abstract: A detection apparatus for unbalanced DC link capacitor voltage, the DC link provides a DC voltage and includes a plurality of capacitors coupled in series to two ends of the DC link and a plurality of balanced resistors coupled in series to two ends of the DC link and corresponding to the capacitors. The detection apparatus includes a plurality of sense resistors and a current sensor. One end of each sense resistor is coupled to a common-connected node of two capacitors, and the other end thereof is coupled to a common-connected node of two balanced resistors. The current sensor is coupled to one of the sense resistors and measures a current value of a current flowing through the sense resistor coupled to the current sensor.
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公开(公告)号：US20210215785A1
公开(公告)日：2021-07-15
申请号：US16738096
申请日：2020-01-09
Applicant: International Business Machines Corporation
Inventor： Miguel E. Perez , Michael Sperling , Michael Floyd , John Francis Bulzacchelli
Abstract: Aspects of the invention include a circuit having a power header configured to couple to a power supply and to provide an output voltage. A sense circuit is coupled to the power header to receive the output voltage, the sense circuit including a replica voltage circuit coupled to a replica power header circuit and a transistor, the replica voltage circuit being configured to provide a replicated output voltage in accordance with the output voltage, the replica power header circuit being configured to couple to the power supply and the replicated output voltage to generate a replica current, the transistor being configured to deliver the replica current.
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