公开(公告)号：US10355499B2

公开(公告)日：2019-07-16

申请号：US14876918

申请日：2015-10-07

申请人： Takashi Takeda ,  Ryota Kageyama ,  Koichi Murano ,  Junji Takeshita ,  Takeshi Yamaguchi ,  Takatoshi Itagaki ,  Koji Yano

发明人： Takashi Takeda ,  Ryota Kageyama ,  Koichi Murano ,  Junji Takeshita ,  Takeshi Yamaguchi ,  Takatoshi Itagaki ,  Koji Yano

IPC分类号： H02J7/00 ,  H01M10/42 ,  H01M10/44 ,  H01M10/48

摘要： A battery protection circuit for protecting a secondary battery, the battery protection circuit not having a CPU, includes a non-volatile memory into which characteristics data determining protective characteristics of the battery protection circuit are writable; and a protection operation circuit which performs a protection operation of the secondary battery based on the characteristics data read out of the non-volatile memory.

公开(公告)号：US09762072B2

公开(公告)日：2017-09-12

申请号：US14969275

申请日：2015-12-15

申请人： Ryota Kageyama ,  Takashi Takeda ,  Koichi Murano ,  Takatoshi Itagaki

发明人： Ryota Kageyama ,  Takashi Takeda ,  Koichi Murano ,  Takatoshi Itagaki

IPC分类号： H02J7/00

CPC分类号： H02J7/0029 ,  H02J7/007 ,  H02J2007/0037

摘要： A secondary battery protection circuit for protecting a secondary battery including: a power supply terminal; a protection operation circuit configured to monitor a state of the secondary battery through the power supply terminal to generate a signal for turning on/off conduction of a current path between the secondary battery and a load according to a protection state determined by the monitored state of the secondary battery; a nonvolatile memory in which data is written by a writing voltage being provided at the power supply terminal, an operation of the secondary battery protection circuit being controlled by the data; a voltage generation circuit configured to generate a provision voltage which is provided to a low withstand voltage circuit; and a control circuit configured to enable the nonvolatile memory to store the data therein in accordance with the protection state upon an input voltage being greater than a determination threshold voltage.

公开(公告)号：US09553469B2

公开(公告)日：2017-01-24

申请号：US14865167

申请日：2015-09-25

申请人： Ryota Kageyama ,  Tsutomu Yamauchi ,  Norihito Kawaguchi ,  Nobuhito Tanaka ,  Takashi Takeda ,  Yoshihiro Satake ,  Takeshi Yamaguchi ,  Koji Koshimizu

发明人： Ryota Kageyama ,  Tsutomu Yamauchi ,  Norihito Kawaguchi ,  Nobuhito Tanaka ,  Takashi Takeda ,  Yoshihiro Satake ,  Takeshi Yamaguchi ,  Koji Koshimizu

IPC分类号： H02J7/00

CPC分类号： H02J7/0029 ,  H02J2007/0037 ,  H02J2007/0039 ,  H02J2007/004

摘要： There is provided a method of correcting an overcurrent detection voltage of a battery protection integrated circuit including a current path between a first terminal and a second terminal, one or more transistors for controlling current of a secondary battery, an overcurrent detection circuit and a control circuit. The method comprises the steps of: measuring a resistance value between the first terminal and the second terminal wherein the one or more transistors are turned on at a predetermined temperature; estimating resistance values between the first terminal and the second terminal at respective temperatures based on the measured resistance value; calculating adjusting data for canceling temperature dependency of charge or discharge current of the secondary battery based on the measured resistance value and the estimated resistance values, wherein a value of the charge or discharge current varies depending on temperature; correcting the overcurrent detection voltage based on the calculated adjusting data.

摘要翻译： 提供一种校正包括第一端子和第二端子之间的电流路径的电池保护集成电路的过电流检测电压的方法，用于控制二次电池的电流的一个或多个晶体管，过电流检测电路和控制电路 。 该方法包括以下步骤：测量第一端子和第二端子之间的电阻值，其中一个或多个晶体管在预定温度下导通; 基于所测量的电阻值，在相应的温度下估计第一端子和第二端子之间的电阻值; 基于所测量的电阻值和所估计的电阻值计算用于消除二次电池的充电或放电电流的温度依赖性的调整数据，其中充电或放电电流的值根据温度而变化; 基于计算出的调整数据来校正过电流检测电压。

公开(公告)号：US09755442B2

公开(公告)日：2017-09-05

申请号：US14953544

申请日：2015-11-30

申请人： Ryota Kageyama ,  Tsutomu Yamauchi ,  Nobuhito Tanaka ,  Takashi Takeda ,  Yoshihiro Satake ,  Takeshi Yamaguchi ,  Koji Koshimizu ,  Norihito Kawaguchi

发明人： Ryota Kageyama ,  Tsutomu Yamauchi ,  Nobuhito Tanaka ,  Takashi Takeda ,  Yoshihiro Satake ,  Takeshi Yamaguchi ,  Koji Koshimizu ,  Norihito Kawaguchi

IPC分类号： H02J7/00 ,  H02J7/14

CPC分类号： H02J7/0029 ,  H02J7/0016 ,  H02J7/0021 ,  H02J7/0026 ,  H02J7/0031 ,  H02J7/0073 ,  H02J2007/0037

摘要： A battery protection IC has detection circuits to detect faults of an overcharge, an over-discharge, and an overcurrent of a secondary battery; a control circuit to protect the secondary battery, by controlling (dis)charging the secondary battery upon the fault; and a delay circuit to generate delay after the fault before the controlling. The IC includes a memory unit to store data for setting and adjusting a circuit characteristic of the IC; and a setting circuit to set and adjust the circuit characteristic, based on the data from the memory unit. The memory unit includes a pair of non-volatile memory cells to complementarily store one bit, and a latch circuit directly cross-coupled with the memory cells, for each bit of the data. The latch circuit statically outputs the data from the memory cells to the setting circuit when the IC is turned on.