WO2018076794A1 - Circuit de commande de secours redondant de système de gestion de batterie - Google Patents

Circuit de commande de secours redondant de système de gestion de batterie Download PDF

Info

Publication number
WO2018076794A1
WO2018076794A1 PCT/CN2017/092842 CN2017092842W WO2018076794A1 WO 2018076794 A1 WO2018076794 A1 WO 2018076794A1 CN 2017092842 W CN2017092842 W CN 2017092842W WO 2018076794 A1 WO2018076794 A1 WO 2018076794A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
circuit
control circuit
control
input
Prior art date
Application number
PCT/CN2017/092842
Other languages
English (en)
Chinese (zh)
Inventor
苏晓越
罗宇
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2018076794A1 publication Critical patent/WO2018076794A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Definitions

  • the invention relates to a battery management system, in particular to a redundant backup control circuit of a battery management system.
  • Lithium-ion batteries are more serious due to the consistency of production and use.
  • the battery management system is required to manage the use of the battery to ensure its long-term and safe use.
  • the two power supply modes are designed in the battery management system at the same time. in.
  • the two power supply modes require safe, fast, and seamless switching to ensure continuity of operation of the battery management system.
  • the input ports of the two power supply modes are the same, and the wiring harness of the input port is required to be incorrect, otherwise the internal battery management system will be damaged, causing loss or even causing safety problems. Therefore, it is necessary to improve the existing redundant backup circuit, increase the reverse connection protection function, and ensure the safe and reliable operation of the battery management system.
  • the existing reverse connection protection circuit usually uses a diode string in the main circuit or uses a relatively complicated control circuit.
  • the main drawbacks are: the diode conduction loss is large in a system with large power demand, and the long-time operation is here. The life cannot be guaranteed in the state; the use of complex control circuits will reduce the reliability of the system on the one hand, and increase the system cost on the other hand, which is not conducive to product development and promotion.
  • the present invention provides a redundant backup control circuit of a battery management system, the redundant backup control circuit includes at least two input circuits, each of which includes a port protection circuit module connected in turn, and a reverse connection Protection circuit module, unidirectional conductive circuit control module, wherein:
  • the port protection circuit module is configured to: input an input power source, filter the input power source to obtain a pure input power source, and output the signal to the reverse connection protection circuit module;
  • the reverse connection protection circuit module is configured to: reverse-protect the pure input power supply, and output to the one-way conductive circuit control module;
  • a unidirectional conductive circuit control module configured to: control the on and off of the road according to the control signal
  • the output terminals of the unidirectional conductive circuit control modules of each input circuit are connected and output power.
  • the port protection circuit module is specifically configured to: access an input power source, absorb an electrostatic interference signal from the input power source, absorb a large current signal caused by an instantaneous overvoltage, and filter out A pure input power is obtained after the noise signal.
  • the port protection circuit module comprises: a parallel electrostatic protection capacitor, a transient voltage suppression diode, at least one filter capacitor, and two ends of the electrostatic protection capacitor, transient Both ends of the voltage suppression diode and at least one filter capacitor are respectively connected to the positive and negative terminals of the input power source.
  • the reverse connection protection circuit module includes: a first field effect transistor, a first protection resistor, and a second protection resistor;
  • the source of the first FET is connected to one end of the first protection resistor, the other end of the first resistor is connected to the gate of the first FET, and the gate of the first FET is connected to one end of the second protection resistor ;
  • the drain of the first field effect transistor and the other end of the second resistor are connected to the port protection circuit module, and the source of the first field effect transistor is connected to the one-way conductive circuit control module.
  • the first field effect transistor is a PMOS transistor.
  • the reverse connection protection circuit module further includes: a Zener diode, a cathode of the Zener tube is connected to a source of the first FET, and a positive pole of the Zener tube The gate of the first field effect transistor is connected.
  • the one-way conductive circuit control module is an ORING control circuit module.
  • the unidirectional conductive circuit control module comprises: an ORING control circuit chip, an input pin of the ORING control circuit chip is connected with the reverse connection protection circuit module, and an ORING control circuit
  • the output pin of the chip is used as the output power of the output of the unidirectional conductive circuit control module, and the enable pin of the ORING control circuit chip is connected with an external control signal;
  • the unidirectional conductive circuit control module further includes: a second field effect transistor;
  • the drain of the second FET is connected to the output pin of the ORING control circuit chip, the source of the second FET is connected to the reverse protection circuit module, and the gate of the second FET is controlled by ORING The control pins of the circuit chip are connected.
  • the second field effect transistor is an NMOS transistor.
  • the redundant backup control circuit of the battery management system of the present invention is provided with a port protection circuit module, a reverse connection protection circuit module, and a unidirectional conductive circuit control module, so that the circuit can be used for redundancy backup power supply.
  • Reverse connection protection function increases system reliability, reduces system cost, and ensures system safety and stable operation.
  • FIG. 1 is a block diagram of a redundant backup control circuit of a battery management system of the present invention.
  • FIG. 2 is a circuit diagram of a redundant backup control circuit of the battery management system of the present invention.
  • the redundant backup control circuit includes at least two input circuits, and each input current includes a port protection circuit module 11 connected in turn, and reverse connection protection.
  • the circuit module 12 and the unidirectional conductive circuit control module 13 are:
  • the port protection circuit module 11 is configured to: input an input power source, filter the input power source to obtain a pure input power source, and output the signal to the reverse connection protection circuit module;
  • the reverse connection protection circuit module 12 is configured to: perform reverse connection protection on the pure input power source, and output to the one-way conductive circuit control module;
  • the unidirectional conductive circuit control module 13 is configured to: control the on and off of the circuit according to the control signal;
  • the output terminals of the unidirectional conductive circuit control module 11 of each input circuit are connected to output power.
  • the redundant backup control circuit comprises two input circuits, wherein one input circuit is connected to the battery module, the other input circuit is connected to the external power supply, and the output ends of the unidirectional conductive circuit control module 11 of the two input circuits are connected and connected together. Power the back-end circuitry.
  • each input power source is respectively connected to the reverse protection circuit module 12 through the port protection circuit module 11 to realize the reverse connection protection function of the input power source, ensuring the power supply to the back end is safe and reliable;
  • the circuit control module 13 realizes selection and redundant backup of the external input power, and each input power has the same reference ground inside the battery management system, so that when one input power is abnormal, the other input power can be safe, fast, and seamless. Switch and continue to power the back-end battery management system.
  • the port protection circuit module 11 is specifically configured to: access an input power source, absorb an electrostatic interference signal from the input power source, absorb a large current signal caused by an instantaneous overvoltage, and filter A pure input power source is obtained after the noise signal is removed.
  • the port protection circuit module 11 includes: parallel electrostatic protection capacitors C1 and C5, transient voltage suppression diodes DZ2 and DZ4, and at least one filter capacitor.
  • C2, C3, C4, C6, C7, C8, both ends of the electrostatic protection capacitors C1 and C5, two ends of the transient voltage suppression diodes DZ2 and DZ4, at least one filter capacitor C2, C3, C4, C6, C7, Both ends of C8 are respectively connected to the positive and negative terminals of the input power source.
  • the electrostatic protection (ESD) capacitor C1 in the port protection circuit module 11 can absorb the static interference signal, and the transient Transient Voltage Suppressor (TVS) diode DZ2 can quickly absorb the large current signal caused by transient overvoltage, protect the normal operation of the back-end circuit device, and the input power supply is filtered by filter capacitors C2, C3 and C4 with different capacitance values. After the noise signal, a pure power source is input to the reverse connection protection circuit module 12.
  • ESD electrostatic protection
  • TVS Transient Transient Voltage Suppressor
  • the reverse protection circuit module 12 includes: a first field effect transistor Q1, Q3, a first protection resistor R1, R4, and a second protection resistor. R2, R5;
  • the sources of the first field effect transistors Q1 and Q3 are connected to one ends of the first protection resistors R1 and R4, and the other ends of the first resistors R1 and R4 are connected to the gates of the first field effect transistors Q1 and Q3, and the first field effect is applied.
  • the gates of the tubes Q1 and Q3 are connected to one ends of the second protection resistors R2 and R5;
  • the drains of the first field effect transistors Q1, Q3 and the other ends of the second resistors R2, R5 are connected to the port guard circuit module 11, and the sources of the first field effect transistors Q1, Q3 are connected to the unidirectional conductive circuit control module 13.
  • the first FET is a PMOS transistor.
  • the PMOS is a P-type metal oxide semiconductor field effect transistor (MOS).
  • MOS metal oxide semiconductor field effect transistor
  • the first field effect transistor in the reverse connection protection module 12 is a PMOS tube, and the body diode of the PMOS tube Q1 is self-conducted due to the difference in voltage between the front and the back and the conduction voltage, and the current is from the current.
  • the body diode of the PMOS transistor Q1 flows, so that a voltage drop is formed on the first protection resistor R1 and the second protection resistor R2, and the second protection is performed after the input voltage is divided by the first protection resistor R1 and the second protection resistor R2.
  • the voltage across the resistor R2 is the same as the gate voltage of the PMOS transistor Q1, so that the PMOS transistor Q1 satisfies the conduction condition, and the PMOS transistor Q1 is switched from the off state to the on state. State, at this time, the current no longer flows through the body diode of the PMOS transistor Q1, but flows through the PMOS transistor Q1, and the conduction voltage drop of the PMOS transistor is much smaller than the conduction voltage drop of the body diode, thereby lowering the PMOS transistor Q1. The power loss, while greatly improving the working life of the PMOS tube Q1.
  • the reverse connection protection circuit module further includes: a Zener diode DZ1, DZ3, a negative pole of the Zener diode DZ1, DZ3, and a first FET.
  • the sources of Q1 and Q3 are connected, and the anodes of the Zener diodes DZ1 and DZ3 are connected to the gates of the first field effect transistors Q1 and Q3.
  • the Zener diode is added to protect the gate and the source of the first FET, so that the voltage of the gate and the source does not exceed the maximum withstand voltage of the gate and source of the first FET.
  • the one-way conductive circuit control module 13 is an ORING control circuit module.
  • the unidirectional conductive circuit control module 13 includes: an ORING control circuit chip U1, U2, Q4, and an input of the ORING control circuit chip U1, U2.
  • the pin is connected to the reverse protection circuit module 12, and the output pin of the ORING control circuit chip U1, U2 is used as the output power of the output of the unidirectional conductive circuit control module 13, and the enable pin of the ORING control circuit chip U1, U2 is External control signal connection.
  • the input circuit is selected by the ORING control circuit chip.
  • the pins 3 and 7 of the ORING control circuit chip U1 are vacant, the pin 6 is grounded, and the enable pin 5 is connected to the external control through the resistor R3 (the resistor R6 in the other input circuit). Signals are controlled to switch between different input circuits.
  • the unidirectional conductive circuit control module 13 further includes: second FETs Q2, Q4;
  • the drains of the second field effect transistors Q2 and Q4 are connected to the output pins of the ORING control circuit chips U1 and U2, and the sources of the second field effect transistors Q2 and Q4 are connected to the reverse connection protection circuit module 12, The gates of the two field effect transistors Q2 and Q4 are connected to the control pins of the ORING control circuit chips U1 and U2.
  • the second field effect transistor is an NMOS transistor.
  • the NMOS transistor is an N-type metal oxide semiconductor field effect transistor (MOS).
  • MOS metal oxide semiconductor field effect transistor
  • the second field effect transistor Q2 is an NMOS transistor.
  • the source of the PMOS transistor Q1 enters the unidirectional conductive circuit control module 13 and is connected to the source of the NMOS transistor Q2 in the unidirectional conductive circuit control module 13.
  • the source of the PMOS transistor Q1 is also connected to the ORING control circuit chip U1.
  • Input pin 2 and pin 4 the drain of the NMOS transistor Q2 is connected to the output pin 8 of the control circuit chip U1, and serves as an output power supply for the back-end circuit system.
  • the NMOS transistor Q2 body diode will conduct itself, the current flows from the body diode of the NMOS transistor Q2 and forms a voltage drop, and the ORING control circuit chip U1 can detect the source and drain voltage drop of the NMOS transistor Q2, and reach When the value is constant, the gate of the NMOS transistor Q2 is driven by the control pin 1, so that the NMOS transistor Q2 is turned on.
  • the current will no longer flow through the body diode of the NMOS transistor Q2, but flow through the NMOS transistor Q2, and the NMOS
  • the conduction voltage drop of the tube Q2 is much smaller than the conduction voltage drop of the body diode, thereby reducing the power loss of the NMOS transistor Q2 and greatly improving the working life of the NMOS transistor Q2.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

L'invention concerne un circuit de commande de secours redondant d'un système de gestion de batterie, comprenant au moins deux circuits d'entrée ; chacun des circuits d'entrée comprend séparément un module de circuit de protection de port (11), un module de circuit de protection contre la polarité inversée (12), et un module de commande de circuit conducteur unidirectionnel (13) connectés les uns aux autres en séquence ; le module de circuit de protection de port (11) est utilisé pour accéder à une puissance d'entrée, filtrer la puissance d'entrée pour obtenir une puissance d'entrée pure, et délivrer en sortie au module de circuit de protection contre la polarité inversée (12) ; le module de circuit de protection contre la polarité inversée (12) est utilisé pour effectuer une protection contre la polarité inversée sur la puissance d'entrée pure et délivrer en sortie au module de commande de circuit conducteur unidirectionnel (13) ; le module de commande de circuit conducteur unidirectionnel (13) est utilisé pour commander la mise en marche/arrêt du circuit en fonction d'un signal de commande ; des extrémités de sortie des modules de commande de circuit conducteur unidirectionnel (13) de tous les circuits d'entrée sont connectées les unes aux autres puis délivrent de l'énergie. Le circuit de commande de secours redondant du système de gestion de batterie a une fonction de protection contre la polarité inversée tout en réalisant une alimentation électrique de secours redondante, et par conséquent, la fiabilité du système est augmentée.
PCT/CN2017/092842 2016-10-25 2017-07-13 Circuit de commande de secours redondant de système de gestion de batterie WO2018076794A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201621160653.7U CN206135414U (zh) 2016-10-25 2016-10-25 电池管理系统的冗余备份控制电路
CN201621160653.7 2016-10-25

Publications (1)

Publication Number Publication Date
WO2018076794A1 true WO2018076794A1 (fr) 2018-05-03

Family

ID=58575288

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/092842 WO2018076794A1 (fr) 2016-10-25 2017-07-13 Circuit de commande de secours redondant de système de gestion de batterie

Country Status (2)

Country Link
CN (1) CN206135414U (fr)
WO (1) WO2018076794A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108416928A (zh) * 2018-05-30 2018-08-17 杭州先锋电子技术股份有限公司 一种物联网燃气表用sim卡自动切换电路
CN108803420A (zh) * 2018-06-02 2018-11-13 新乡市光明电器有限公司 军用车载设备集控电路
CN109755928A (zh) * 2019-02-19 2019-05-14 深圳市科比特航空科技有限公司 防反向电动势电路和无人机
CN110556914A (zh) * 2019-09-21 2019-12-10 温岭爱特制冷设备有限公司 一种真空泵的电源控制系统
CN113765582A (zh) * 2021-10-25 2021-12-07 江苏云涌电子科技股份有限公司 一种国产化设计的冗余光口单向传输数据实现系统和方法
CN114442723A (zh) * 2022-02-14 2022-05-06 昀迈(上海)物联网科技有限公司 一种级联信号压差纠正、自控备用电源及保护的电路

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206135414U (zh) * 2016-10-25 2017-04-26 宁德时代新能源科技股份有限公司 电池管理系统的冗余备份控制电路
CN108988470A (zh) * 2017-06-05 2018-12-11 深圳市道通智能航空技术有限公司 电池冗余电路、无人飞行器及其电池供电的控制方法
CN110504668A (zh) * 2019-09-27 2019-11-26 苏州浪潮智能科技有限公司 一种直流电源并机输入防反接电路及服务器
CN112202235B (zh) * 2020-09-16 2022-06-14 北京聚能合源科技有限公司 冗余电源及其输入切换控制电路
CN112600295A (zh) * 2020-12-04 2021-04-02 清华大学 冗余车载传感器供电方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040095021A1 (en) * 2002-11-15 2004-05-20 Inostor Corporation Power distributor
CN1627593A (zh) * 2003-12-11 2005-06-15 上海贝尔阿尔卡特股份有限公司 一种低压电源主从供电方式的切换电路
CN101286083A (zh) * 2008-02-14 2008-10-15 浪潮电子信息产业股份有限公司 大功率服务器机柜冗余供电系统
CN201639292U (zh) * 2010-03-16 2010-11-17 青岛海信移动通信技术股份有限公司 移动终端的供电保护装置
CN103036226A (zh) * 2012-12-06 2013-04-10 南京莱斯信息技术股份有限公司 低成本低功耗供电反接保护电路及其保护方法
CN203151203U (zh) * 2012-12-21 2013-08-21 深圳市理邦精密仪器股份有限公司 一种电源切换装置
CN204156524U (zh) * 2014-08-18 2015-02-11 武汉迈威光电技术有限公司 一种mosfet管防反接电路
CN204905985U (zh) * 2015-06-11 2015-12-23 中兴通讯股份有限公司 一种oring控制电路和电源系统
CN205544927U (zh) * 2016-04-18 2016-08-31 厦门立控科技有限公司 一种分组式电源管理系统
CN206135414U (zh) * 2016-10-25 2017-04-26 宁德时代新能源科技股份有限公司 电池管理系统的冗余备份控制电路

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040095021A1 (en) * 2002-11-15 2004-05-20 Inostor Corporation Power distributor
CN1627593A (zh) * 2003-12-11 2005-06-15 上海贝尔阿尔卡特股份有限公司 一种低压电源主从供电方式的切换电路
CN101286083A (zh) * 2008-02-14 2008-10-15 浪潮电子信息产业股份有限公司 大功率服务器机柜冗余供电系统
CN201639292U (zh) * 2010-03-16 2010-11-17 青岛海信移动通信技术股份有限公司 移动终端的供电保护装置
CN103036226A (zh) * 2012-12-06 2013-04-10 南京莱斯信息技术股份有限公司 低成本低功耗供电反接保护电路及其保护方法
CN203151203U (zh) * 2012-12-21 2013-08-21 深圳市理邦精密仪器股份有限公司 一种电源切换装置
CN204156524U (zh) * 2014-08-18 2015-02-11 武汉迈威光电技术有限公司 一种mosfet管防反接电路
CN204905985U (zh) * 2015-06-11 2015-12-23 中兴通讯股份有限公司 一种oring控制电路和电源系统
CN205544927U (zh) * 2016-04-18 2016-08-31 厦门立控科技有限公司 一种分组式电源管理系统
CN206135414U (zh) * 2016-10-25 2017-04-26 宁德时代新能源科技股份有限公司 电池管理系统的冗余备份控制电路

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108416928A (zh) * 2018-05-30 2018-08-17 杭州先锋电子技术股份有限公司 一种物联网燃气表用sim卡自动切换电路
CN108416928B (zh) * 2018-05-30 2023-11-14 杭州先锋电子技术股份有限公司 一种物联网燃气表用sim卡自动切换电路
CN108803420A (zh) * 2018-06-02 2018-11-13 新乡市光明电器有限公司 军用车载设备集控电路
CN108803420B (zh) * 2018-06-02 2024-05-10 新乡市光明电器有限公司 军用车载设备集控电路
CN109755928A (zh) * 2019-02-19 2019-05-14 深圳市科比特航空科技有限公司 防反向电动势电路和无人机
CN110556914A (zh) * 2019-09-21 2019-12-10 温岭爱特制冷设备有限公司 一种真空泵的电源控制系统
CN110556914B (zh) * 2019-09-21 2024-04-02 温岭爱特制冷设备有限公司 一种真空泵的电源控制系统
CN113765582A (zh) * 2021-10-25 2021-12-07 江苏云涌电子科技股份有限公司 一种国产化设计的冗余光口单向传输数据实现系统和方法
CN114442723A (zh) * 2022-02-14 2022-05-06 昀迈(上海)物联网科技有限公司 一种级联信号压差纠正、自控备用电源及保护的电路

Also Published As

Publication number Publication date
CN206135414U (zh) 2017-04-26

Similar Documents

Publication Publication Date Title
WO2018076794A1 (fr) Circuit de commande de secours redondant de système de gestion de batterie
KR102416267B1 (ko) 스위치드 커패시터 전력 컨버터의 보호
CN110380474B (zh) 电池保护控制器及电池充放电保护电路
US9461455B2 (en) Protecting circuit
US11522363B2 (en) Supply protection circuit that protects power transistor from a supply signal of an incorrect polarity
CN106575865A (zh) 电压调节器的短路保护
US9722411B2 (en) Secondary power system and power supply device
US20080192396A1 (en) Over-voltage protection circuit and method thereof
CN111788752A (zh) 一种保护电路、硬盘设备的电源系统以及车载设备
CN107845998A (zh) 一种电源并联冗余系统中输入供电健康检测及管理电路
CN212751771U (zh) 一种保护电路、硬盘设备的电源系统以及车载设备
CN109831001A (zh) 一种mos管驱动电路及锂电池保护ic
CN110890749A (zh) 电源防反接电路和电源电路
CN213843926U (zh) 用于线性稳压器的防倒灌电路和线性稳压装置
CN115882580A (zh) 电源切换系统及双电源供电设备
CN209298948U (zh) 一种mos管驱动电路及锂电池保护ic
CN110007221A (zh) 合路开关电路及其故障检测方法
WO2023065486A1 (fr) Circuit de commutation ayant une fonction de sélection de batterie automatique, et dispositif d'alimentation électrique équipé de celui-ci
CN112994441A (zh) 一种车载ecu电源输入电路
CN204222674U (zh) 一种过压保护电路
CN211063338U (zh) 一种紧凑型放大器供电端口静电保护电路
CN214256133U (zh) 一种芯片稳压供电电路及芯片
CN219394430U (zh) 一种车载冗余电源低功耗防反接电路
CN111009955A (zh) 一种带保护的双电源供电电路
CN221263356U (zh) 一种短路保护电路

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17863644

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17863644

Country of ref document: EP

Kind code of ref document: A1