公开(公告)号：US20240230770A9

公开(公告)日：2024-07-11

申请号：US18399074

申请日：2023-12-28

Applicant: DENSO CORPORATION

Inventor： Masaaki KITAGAWA ,  Shun Miyauchi ,  Isao Ishibe

IPC: G01R31/3835 ,  H01M10/42 ,  H02J7/00

CPC classification number: G01R31/3835 ,  H01M10/4285 ,  H02J7/0047

Abstract: In a battery measurement apparatus, a current controller sets a predetermined wavenumber of each of first and second alternating signals, and determines whether an input or an output of the predetermined wavenumber of one of the first and second alternating signals to or from a rechargeable battery has completed. The current controller switches, in response to determination that the input or output of the predetermined wavenumber of one of the first and second alternating signals to or from the rechargeable battery has completed, the completed one of the first and second alternating signals to a new alternating signal having another frequency while continuing the input or output of the other of the first and second alternating signals to or from the rechargeable battery.

公开(公告)号：US20240133960A1

公开(公告)日：2024-04-25

申请号：US18399074

申请日：2023-12-28

Applicant: DENSO CORPORATION

Inventor： Masaaki KITAGAWA ,  Shun Miyauchi ,  Isao Ishibe

IPC: G01R31/3835 ,  H01M10/42 ,  H02J7/00

CPC classification number: G01R31/3835 ,  H01M10/4285 ,  H02J7/0047

Abstract: In a battery measurement apparatus, a current controller sets a predetermined wavenumber of each of first and second alternating signals, and determines whether an input or an output of the predetermined wavenumber of one of the first and second alternating signals to or from a rechargeable battery has completed. The current controller switches, in response to determination that the input or output of the predetermined wavenumber of one of the first and second alternating signals to or from the rechargeable battery has completed, the completed one of the first and second alternating signals to a new alternating signal having another frequency while continuing the input or output of the other of the first and second alternating signals to or from the rechargeable battery.

公开(公告)号：US10903667B2

公开(公告)日：2021-01-26

申请号：US16215388

申请日：2018-12-10

Applicant: DENSO CORPORATION

Inventor： Masaaki Kitagawa ,  Masahiko Ito ,  Masakazu Kouda ,  Isao Ishibe

IPC: G01R31/396 ,  H02J7/00 ,  G01R31/3835

Abstract: A battery control unit is adapted for a power supply system provided with a storage battery series-connected battery cells, a filter circuit, a discharge circuit, and a connection member connecting between the battery cell and the filter circuit.
The battery control unit includes a voltage detection unit detecting voltage at the battery cell where noise is eliminated by the filter circuit, the voltage being detected immediately before/after a discharging is performed through the discharge circuit; a correction value calculation unit that calculates an amount of a voltage drop at the connection member when a discharging is performed through the discharge circuit, to be a correction value; and a voltage calculation unit that calculates voltage of the battery cell by adding the correction value calculated by the correction value calculation unit to a post-discharge voltage detected immediately after the discharging by the voltage detection unit.