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公开(公告)号：US11575161B2
公开(公告)日：2023-02-07
申请号：US17069121
申请日：2020-10-13
摘要： A secondary battery protection circuit for controlling charge and discharge using a switching circuit to protect a secondary battery from temperature is provided. The switching circuit is configured to be provided in a charge-and-discharge path between the secondary battery and an external device. The secondary battery protection circuit includes a detection terminal configured to be electrically connected, via a resistor, to between the switching circuit and the external device. The secondary battery protection circuit includes a first terminal configured to be electrically connected to a temperature detection terminal of the external device. The secondary battery protection circuit includes a second terminal to which a temperature sensitive element is configured to be electrically connected, the temperature sensitive element having a characteristic value varying in accordance with a change in temperature of the secondary battery.
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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
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.
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公开(公告)号：US09197084B2
公开(公告)日：2015-11-24
申请号：US13748174
申请日：2013-01-23
IPC分类号： H02J7/00
摘要： A charge controller includes a charge control circuit that, when detecting that a charging power supply is connected, controls the charging transistor to apply the charge current; a first and second control switch element connected in series between one terminal of a secondary battery and an external terminal; and a protection circuit that, when the secondary battery is over-discharged, turns off the first control switch element to stop discharge current and when deeply discharged, turns off the second control switch element. The protection circuit sends a charge inhibit signal to the charge control circuit when the secondary battery is deeply discharged, and while receiving the charge inhibit signal, the charge control circuit keeps the charging transistor off to prevent the charge current from flowing even if detecting that the charging power supply is connected.
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公开(公告)号：US20100090652A1
公开(公告)日：2010-04-15
申请号：US12248952
申请日：2008-10-10
申请人： Takashi Takeda , Junji Takeshita
发明人： Takashi Takeda , Junji Takeshita
IPC分类号： H02J7/00
CPC分类号： H02J7/0031 , H01M10/443 , H01M10/486 , H02J2007/0037 , H02J2007/0039 , H02J2007/004
摘要： A battery pack has first through third external terminals connected to positive and negative power supply terminals and a voltage detection terminal, respectively. A secondary battery is connected between the first external terminal and the third external terminal. A protection circuit controls ON/OFF of first and second switching elements provided on a wiring between the secondary battery and a load or a charge device by detecting an overcharge, an overdischarge and an overcurrent of the secondary battery. A first thermistor is connected between the second external terminal and the third external terminal. A series circuit containing a second thermistor and a resistor is provided in parallel to the secondary battery. A third switching element is connected between the second external terminal and the third external terminal. The protection circuit turns on the third switching element and short-circuits between the second external terminal and the third external terminal when a detection is made by the second thermistor that a temperature of the secondary battery exceeds a predetermined temperature.
摘要翻译： 电池组具有分别连接到正负电源端子和电压检测端子的第一至第三外部端子。 二次电池连接在第一外部端子和第三外部端子之间。 保护电路通过检测二次电池的过充电，过放电和过电流来控制设置在二次电池与负载或充电装置之间的配线上的第一和第二开关元件的接通/断开。 第一热敏电阻连接在第二外部端子和第三外部端子之间。 与二次电池并联地设置包含第二热敏电阻和电阻器的串联电路。 第三开关元件连接在第二外部端子和第三外部端子之间。 当第二热敏电阻检测到二次电池的温度超过预定温度时，保护电路接通第三开关元件和第二外部端子与第三外部端子之间的短路。
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公开(公告)号：US20090160405A1
公开(公告)日：2009-06-25
申请号：US12334674
申请日：2008-12-15
申请人： Takashi Takeda , Junji Takeshita
发明人： Takashi Takeda , Junji Takeshita
IPC分类号： H02J7/04
CPC分类号： H02J7/0031 , H01M10/0525 , H01M10/425 , H01M10/443 , H01M10/46 , H01M10/486 , H02J2007/0037 , H02J2007/0039 , H02J2007/004 , Y02E60/122
摘要： In a battery pack, an overcharge detecting circuit compares a voltage between a positive electrode and a negative electrode of a secondary battery with a threshold voltage to detect an overcharge of the secondary battery, and turns off a switching element. A series circuit including a thermistor and a resistor is arranged near the secondary battery and connected in parallel to the secondary battery. A comparator compares a voltage at a junction point of the thermistor and the resistor with a reference voltage corresponding to a predetermined temperature. In response to an output signal of the comparator, a changing unit changes the threshold voltage to a first value when a temperature of the secondary battery is below the predetermined temperature, and changes the threshold voltage to a second smaller value when the temperature of the secondary battery is above the predetermined temperature.
摘要翻译： 在电池组中，过充电检测电路将二次电池的正极和负极之间的电压与阈值电压进行比较，以检测二次电池的过充电，并且断开开关元件。 包括热敏电阻和电阻器的串联电路布置在二次电池附近并与二次电池并联连接。 比较器将热敏电阻和电阻器的连接点处的电压与对应于预定温度的参考电压进行比较。 响应于比较器的输出信号，当二次电池的温度低于预定温度时，改变单元将阈值电压改变为第一值，并且当二次电池的温度变化时，阈值电压变为第二较小值 电池高于预定温度。
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公开(公告)号：US08305041B2
公开(公告)日：2012-11-06
申请号：US12334674
申请日：2008-12-15
申请人： Takashi Takeda , Junji Takeshita
发明人： Takashi Takeda , Junji Takeshita
IPC分类号： H02J7/00
CPC分类号： H02J7/0031 , H01M10/0525 , H01M10/425 , H01M10/443 , H01M10/46 , H01M10/486 , H02J2007/0037 , H02J2007/0039 , H02J2007/004 , Y02E60/122
摘要： In a battery pack, an overcharge detecting circuit compares a voltage between a positive electrode and a negative electrode of a secondary battery with a threshold voltage to detect an overcharge of the secondary battery, and turns off a switching element. A series circuit including a thermistor and a resistor is arranged near the secondary battery and connected in parallel to the secondary battery. A comparator compares a voltage at a junction point of the thermistor and the resistor with a reference voltage corresponding to a predetermined temperature. In response to an output signal of the comparator, a changing unit changes the threshold voltage to a first value when a temperature of the secondary battery is below the predetermined temperature, and changes the threshold voltage to a second smaller value when the temperature of the secondary battery is above the predetermined temperature.
摘要翻译： 在电池组中，过充电检测电路将二次电池的正极和负极之间的电压与阈值电压进行比较，以检测二次电池的过充电，并且断开开关元件。 包括热敏电阻和电阻器的串联电路布置在二次电池附近并与二次电池并联连接。 比较器将热敏电阻和电阻器的连接点处的电压与对应于预定温度的参考电压进行比较。 响应于比较器的输出信号，当二次电池的温度低于预定温度时，改变单元将阈值电压改变为第一值，并且当二次电池的温度变化时，阈值电压变为第二较小值 电池高于预定温度。
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公开(公告)号：US08183835B2
公开(公告)日：2012-05-22
申请号：US12369028
申请日：2009-02-11
申请人： Takashi Takeda , Junji Takeshita
发明人： Takashi Takeda , Junji Takeshita
IPC分类号： H02J7/00
CPC分类号： H01M2/34 , H01M2/348 , H01M10/052 , H02J7/0031 , H02J2007/0037 , H02J2007/0039 , H02J2007/004
摘要： A battery pack including a protection circuit configured to detect over-charge, over-discharge and over-current of a rechargeable battery to turn off a switch element, the switch element provided at a wire provided between the rechargeable battery and a load circuit or a charging device; a series circuit of a thermistor and a resistor, the series circuit provided in parallel to the rechargeable battery, the thermistor thermally connected to the rechargeable battery; and an abnormal temperature detection unit provided in the protection circuit, wherein the abnormal temperature detection unit operates the switch to be in an off state when the temperature of the rechargeable battery is higher than a predetermined temperature, and when a voltage of the wire is higher than a threshold voltage of a forward drop voltage of a body diode in the switch, the abnormal temperature detection unit operates the switch to be in an on state.
摘要翻译： 一种电池组，包括保护电路，其被配置为检测可充电电池的过充电，过放电和过电流以关断开关元件，所述开关元件设置在设置在可再充电电池和负载电路之间的电线或 充电装置; 热敏电阻和电阻器的串联电路，与可再充电电池并联设置的串联电路，热敏电阻热连接到可再充电电池; 以及设置在所述保护电路中的异常温度检测单元，其中当所述可再充电电池的温度高于预定温度时，所述异常温度检测单元将所述开关操作为处于断开状态，并且当所述导线的电压较高时 比开关中的体二极管的正向压降电压的阈值电压高，异常温度检测单元将开关动作为导通状态。
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8.发明授权公开(公告)号：US07757110B2
公开(公告)日：2010-07-13
申请号：US11646694
申请日：2006-12-28
IPC分类号： G06F1/04
CPC分类号： G01R31/3004
摘要： A disclosed timer circuit for clocking a predetermined time includes an oscillator and a frequency dividing unit for dividing a frequency of an oscillating signal output from the oscillator. A comparing unit determines whether a short-time mode instruction is received by comparing a voltage received at an external terminal with a predetermined voltage. A switch causes the oscillating signal to bypass a part of the frequency dividing unit in response receiving the short-time mode instruction.
摘要翻译： 用于对预定时间进行定时的公开的定时器电路包括用于分频从振荡器输出的振荡信号的频率的振荡器和分频单元。 比较单元通过将外部端子接收的电压与预定电压进行比较来确定是否接收到短时间模式指令。 响应于接收短时模式指令，开关使振荡信号绕过分频单元的一部分。
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公开(公告)号：US20090202890A1
公开(公告)日：2009-08-13
申请号：US12369028
申请日：2009-02-11
申请人： Takashi Takeda , Junji Takeshita
发明人： Takashi Takeda , Junji Takeshita
IPC分类号： H01M10/50
CPC分类号： H01M2/34 , H01M2/348 , H01M10/052 , H02J7/0031 , H02J2007/0037 , H02J2007/0039 , H02J2007/004
摘要： A battery pack including a protection circuit configured to detect over-charge, over-discharge and over-current of a rechargeable battery to turn off a switch element, the switch element provided at a wire provided between the rechargeable battery and a load circuit or a charging device; a series circuit of a thermistor and a resistor, the series circuit provided in parallel to the rechargeable battery, the thermistor thermally connected to the rechargeable battery; and an abnormal temperature detection unit provided in the protection circuit, wherein the abnormal temperature detection unit operates the switch to be in an off state when the temperature of the rechargeable battery is higher than a predetermined temperature, and when a voltage of the wire is higher than a threshold voltage of a forward drop voltage of a body diode in the switch, the abnormal temperature detection unit operates the switch to be in an on state.
摘要翻译： 一种电池组，包括保护电路，其被配置为检测可充电电池的过充电，过放电和过电流以关断开关元件，所述开关元件设置在设置在可再充电电池和负载电路之间的电线或 充电装置; 热敏电阻和电阻器的串联电路，与可再充电电池并联设置的串联电路，热敏电阻热连接到可再充电电池; 以及设置在所述保护电路中的异常温度检测单元，其中当所述可再充电电池的温度高于预定温度时，所述异常温度检测单元将所述开关操作为处于断开状态，并且当所述导线的电压较高时 比开关中的体二极管的正向压降电压的阈值电压高，异常温度检测单元将开关动作为导通状态。
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公开(公告)号：US20070081285A1
公开(公告)日：2007-04-12
申请号：US11454563
申请日：2006-06-16
IPC分类号： H02H3/00
CPC分类号： H02H3/081 , Y10T307/549
摘要： A power supply control circuit is disclosed. The power supply control circuit controls a current which is supplied from a power source to a load. The power supply control circuit includes a reverse current detecting circuit which detects a reverse current flowing from the load to the power source and a reverse current preventing circuit which disconnects a line between the power source and the load when the reverse current is detected by the reverse current detecting circuit.
摘要翻译： 公开了电源控制电路。 电源控制电路控制从电源向负载提供的电流。 电源控制电路包括反向电流检测电路，其检测从负载流向电源的反向电流;以及反向电流防止电路，其在反向电流被反向检测时断开电源和负载之间的线路 电流检测电路。
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