196 patents
Page 5 of 10
Utility
Secondary battery protection circuit for causing a desired current to flow in each of the cells, secondary battery protection integrated circuit, and battery pack
2 Nov 21
A secondary battery protection circuit for protecting a secondary battery with multiple connected-in-parallel cells, includes a charging fault detection unit for each cell for prohibiting charging of the corresponding cell when overcharging and/or charging over-current for the corresponding cell is detected; a charging control element for each cell for cutting off a charging path for the corresponding cell when the charging of the corresponding cell is prohibited; a detection resistor for each cell inserted in series in the charging path; and a balance control unit for, in order to balance a first charging current flowing in a first charging path for a first cell with a second charging current flowing in a second charging path for a second cell, controlling a difference between the first and second charging currents in a saturation region of the charging control element based on a detection voltage generated by the detection resistor.
Yoshihiro Motoichi, Iwao Kitamura
Filed: 25 Jun 18
Utility
Battery control circuit, battery control device, and battery pack
26 Oct 21
A battery control circuit controls a balance of cell voltage values of cells coupled in series, and includes connection terminals respectively coupling to a positive electrode of a corresponding cell, a ground terminal coupled to an internal ground of the battery control circuit and coupling to a negative electrode of a cell located at a lowest stage of the cells, a control circuit to select, from the connection terminals, at least one connection terminal coupled to the internal ground via an internal current path of the battery control circuit, and a current generation circuit to supply a terminal current whose current value varies according to the cell voltage value of the cell whose positive electrode is coupled to the at least one of the connection terminals selected by the control circuit, from the at least one of the connection terminals to the internal ground via the internal current path.
Kohei Shibata
Filed: 21 Sep 18
Utility
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26 Oct 21
A battery pack includes a secondary battery, a secondary battery protecting integrated circuit configured to protect the secondary battery, at least one sensor configured to output a fault signal indicating sensing of a fault in the battery pack or an electronic apparatus including the battery pack, a detecting circuit configured to output a fault detection signal indicating a detection of the fault signal, a delay circuit configured to output a pulse delaying from the fault detection signal, and a counter configured to count a number of generating the pulse, the counter having at least N bits (N is an integer greater than 1), wherein the counter stops an operation until a count of 2(N-1).
Takeshi Yamaguchi
Filed: 5 Mar 18
Utility
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26 Oct 21
A camera module has a magnet which is held by a magnet holder included in an optical device part together with a lens holder and which is used in common as a magnet in collaboration with a first coil to move an imaging device and the lens holder relative to each other in a direction of an optical axis, a magnet in collaboration with a second coil to move the imaging device and the optical device part relative to each other in a direction orthogonal to the optical axis, and a magnet of which a magnetic force is detected by a Hall device.
Akihiro Moriya, Masayoshi Sugawara
Filed: 16 Jun 20
Utility
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19 Oct 21
A light guide guides light emitted by a light source to a portion around an illumination target.
Koichi Watanabe
Filed: 26 Feb 20
Utility
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12 Oct 21
A light scanning apparatus includes a mirror supporting portion having a mirror on a front surface, an actuator configured to driving the mirror supporting portion, a fixed frame disposed around the mirror supporting portion and the actuator, and at least one rib disposed on a back surface side of the mirror supporting portion or the actuator, wherein the rib includes a straight portion and a contact portion having a width wider than a width of the straight portion.
Akira Takahashi
Filed: 7 Oct 19
Utility
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12 Oct 21
An optical scanning device includes a drive beam configured to support a mirror, and a drive source provided on the drive beam and configured to oscillate the mirror about a predetermined axis passing through the center of the light reflecting surface of the mirror.
Tsukasa Yamada
Filed: 18 Apr 18
Utility
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12 Oct 21
A control device for a laser scanning display apparatus includes a laser device, a current source that generates an electric current supplied to the laser device, and a controller that controls the current source to set a current value of the electric current supplied to the laser device.
Toyoki Tanaka, Etsuji Hayakawa
Filed: 4 Mar 20
Utility
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5 Oct 21
A pressure sensor device of the present invention includes a first board including external connection terminals, a second board stacked on an upper surface of the first board and including a first through hole and a second through hole, a pressure sensor element including a diaphragm structure and mounted on an upper surface of the second board such that the first through hole is closed by the diaphragm structure, and a cover that is mounted on the upper surface of the second board to cover the pressure sensor element and in which a first channel for guiding a first fluid to an upper surface of the diaphragm structure is formed.
Soichiro Suzu
Filed: 7 Feb 19
Utility
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5 Oct 21
Provided is a lens holder driving device having the fixing part including a base member, the driving mechanism including a yoke, the position detection part including a sensor magnet attached on a corresponding outer peripheral surface of the lens holder in a direction orthogonal to the optical axis.
Tomohiko Osaka, Takashi Ishizawa
Filed: 10 Sep 19
Utility
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28 Sep 21
Provided is a single-axis rotary actuator that is suitable for rotationally driving an optical element, such as a diffraction grating, in a single-axis direction and that is suitable for forming light having a wide wavelength band.
Masahiro Saito
Filed: 31 Mar 17
Utility
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28 Sep 21
In the movable body one of a magnet and a core that has a magnetic pole surface disposed so as to face a magnetic pole surface of the magnet via an air gap and around which a coil is wound is provided on each of both sides across the shaft of the support shaft part in the movable body, and in the fixing body the other is provided facing the magnet or core disposed on both sides of the shaft of the support shaft part in the movable body.
Yuki Takahashi, Chikara Sekiguchi, Tomoya Ishitani, Shigenori Inamoto
Filed: 19 Dec 17
Utility
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21 Sep 21
A switching power supply device includes a transformer for voltage conversion, a synchronous rectification MOS transistor, and a secondary side control circuit.
Takumi Hyugaji, Takeshi Sato, Minoru Kado
Filed: 9 Mar 20
Utility
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14 Sep 21
An actuator includes a driving beam that includes a beam extending in a direction orthogonal to a predetermined axis and supports an object to be driven; a driving source that is formed on a surface of the beam and causes the object to rotate around the predetermined axis; a sensor beam that extends in a direction that is the same as the direction in which the beam extends, one end of the sensor beam being connected to a lateral side of the beam; and a sensor that is formed on a surface of the sensor beam, the surface of the sensor beam and the surface of the beam facing the same direction.
Kensuke Yamada
Filed: 7 Mar 19
Utility
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7 Sep 21
An optical module includes a fixed substrate, and a sensor substrate secured to the fixed substrate and having a through-hole formed therein.
Tomomitsu Ohara, Kazuki Tsutsumi, Shinji Kimura, Syuhei Suzuki, Yusuke Ohba
Filed: 3 Mar 20
Utility
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24 Aug 21
A secondary battery protection apparatus includes a plurality of secondary battery protection apparatuses.
Kohei Shibata
Filed: 10 Sep 20
Utility
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17 Aug 21
A switching power supply device includes a voltage conversion transformer, a primary-side control semiconductor device, a rectification and smoothing circuit, an output voltage detection circuit, a failure detection circuit, and a switch.
Satoshi Arima, Hiroki Matsuda
Filed: 2 Oct 19
Utility
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10 Aug 21
A switching power supply device includes a transformer for voltage conversion, a synchronous rectification MOS transistor, a secondary side control circuit, and a minimum on-time setting circuit.
Takumi Hyugaji, Takeshi Sato, Minoru Kado
Filed: 9 Mar 20
Utility
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10 Aug 21
Provided are a lens driving device, a camera module and a camera-mounted device which can perform translational deviation correction in addition to angular deviation correction.
Shun Sasaki, Toshiyuki Takahashi, Satoshi Ajiki
Filed: 14 Nov 16
Utility
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27 Jul 21
An electronic device includes a deformation amount detecting unit configured to detect a deformation amount of a secondary battery connected to the electronic device; a total charge/discharge amount detecting unit configured to detect a total charge/discharge amount of the secondary battery; a storage unit configured to store reference data representing a relationship between the deformation amount and the total charge/discharge amount; a state determining unit configured to determine a state of the secondary battery, based on the deformation amount detected by the deformation amount detecting unit, the total charge/discharge amount detected by the total charge/discharge amount detecting unit, and the reference data; and a notification control unit configured to perform a notification based on a result of the state of the secondary battery.
Takayuki Sugaya
Filed: 5 Feb 20