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WO2013013555A1 - Dispositif de contrôle d'accès pour accumulateur d'alimentation électrique pour la communication - Google Patents

Dispositif de contrôle d'accès pour accumulateur d'alimentation électrique pour la communication Download PDF

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Publication number
WO2013013555A1
WO2013013555A1 PCT/CN2012/077877 CN2012077877W WO2013013555A1 WO 2013013555 A1 WO2013013555 A1 WO 2013013555A1 CN 2012077877 W CN2012077877 W CN 2012077877W WO 2013013555 A1 WO2013013555 A1 WO 2013013555A1
Authority
WO
WIPO (PCT)
Prior art keywords
relay
resistor
battery
mos transistor
communication power
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/077877
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English (en)
Chinese (zh)
Inventor
孟林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
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 ZTE Corp filed Critical ZTE Corp
Publication of WO2013013555A1 publication Critical patent/WO2013013555A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection

Definitions

  • the utility model relates to the technical field of communication, in particular to a communication power battery access control device.
  • the communication power supply system is generally composed of an AC input unit, a rectifier unit, a monitoring unit, a DC power distribution unit, and a battery pack, and realizes a conversion process from AC to DC.
  • batteries In order to achieve uninterrupted power supply, batteries must be configured to ensure that the power supply system can still supply power to the load in the event of AC power failure.
  • the load cannot be supplied to the load without limitation.
  • the battery and load To the extent that the battery and load need to be disconnected, the battery is prevented from being over-discharged. Therefore, when the battery is connected to the power supply system, the battery is connected to the busbar of the power supply through a circuit breaker.
  • the system block diagram of the communication power supply is shown in Figure 1.
  • the rectifier output DC voltage supplies power to the load device, and at the same time completes the charging function of the battery. At this time, the circuit breaker is in the closed state. When the system AC power is cut off, the rectifier has no output, and the battery supplies power to the load to maintain normal operation of the system.
  • the circuit breaker Due to the limited discharge time and capacity of the battery, and excessive discharge will greatly shorten the life of the battery.
  • the circuit breaker operates, disconnects the battery from the load, and stops discharging to protect the battery.
  • the rectifier has output to supply power to the load.
  • the circuit breaker will be larger when it is closed.
  • the current surge has an effect on battery life.
  • the circuit breaker since the circuit breaker is a mechanical contact, when the circuit is opened or closed, the arc is generated due to the change of the current, and the capacity of the circuit breaker is high.
  • the circuit breaker has a large volume and a strong flow capacity.
  • the purpose of the embodiment of the present invention is to provide a communication power source battery access control device, which is used for solving the related art embedded communication power supply system, and it is difficult to realize the circuit breaker in the space of small space and limited height. Problems installed in the communication power system.
  • a communication power source battery access control device wherein when the battery is charged and discharged, the battery is connected to the busbar of the power source through the device, wherein:
  • the device includes an AC voltage/battery voltage detection circuit, a timing control circuit, a relay, and a first
  • MOS tube where:
  • the AC voltage/battery voltage detecting circuit is configured to: detect whether the system AC is powered off and the remaining amount of the battery, and input the detection result to the timing control circuit;
  • the two output ends of the timing control circuit are respectively connected to the gate of the first MOS transistor and the input end of the relay, and are configured to: when the detection result is that the system is AC-powered and the battery voltage is lower than the threshold Controlling the first MOS transistor to be turned on, and controlling the relay contact to be turned off; after the relay contact is disconnected, issuing a control signal for turning off the first MOS tube; After that, the relay is controlled to be turned on to achieve normal access of the system;
  • the source and the drain of the first MOS transistor are respectively connected to both ends of the contact of the relay.
  • the device further includes a third MOS transistor, a gate of the third MOS transistor is connected to an output end of the timing control circuit, and a source and a drain are respectively connected at two ends of the contact of the relay.
  • the first MOS transistor and the third MOS transistor are respectively connected with a parasitic diode, and two ends of each parasitic diode are respectively connected to the source and the drain of the corresponding MOS transistor.
  • the timing control circuit includes a first resistor, a second resistor, a first capacitor, a Zener, and a triode, where:
  • One end of the first resistor is connected to the output end of the AC voltage/battery voltage detecting circuit, and the other end is connected to the second resistor, and the first resistor is connected in series with the second resistor; The other end of the second resistor is grounded, and the first capacitor is connected in parallel at both ends of the second resistor;
  • Zener tube One end of the Zener tube is connected between the first resistor and the second resistor, and the other end is connected to a base of the transistor;
  • the collector of the triode is connected to the gate of the first MOS transistor, and the emitter is grounded.
  • the timing control circuit further includes a third resistor connected between the output end of the AC voltage/battery voltage detecting circuit and the collector of the transistor.
  • the device further includes a second capacitor connected in parallel across the contacts of the relay.
  • the device further includes a fourth resistor, and the fourth resistor is connected in series with the second capacitor.
  • the apparatus further includes a first diode, the first diode being coupled in parallel across the contacts of the relay.
  • the relay is a relay of a normally closed contact.
  • an on time of the first MOS transistor is greater than an operation time of the relay.
  • the device provided by the embodiment of the utility model realizes the control of the reverse current on and off by using the single-controllable active switch and the normally closed contact of the relay in parallel, and the relay is not suitable for the forward current. Control to achieve fast access to the device.
  • the volume of the communication power system is reduced, and the miniaturization and embedded installation of the communication power system are realized.
  • FIG. 1 is a schematic diagram of connection of a communication power system in the related art
  • FIG. 2 is a schematic diagram of a communication power source battery access control device according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a communication power source battery access control device according to another embodiment of the present invention. Preferred embodiment of the present invention
  • the embodiment of the present invention provides a communication power source battery access control device, which can reduce the demand for the circuit breaker capacity, realize the miniaturization of the communication power supply system, and reduce the large current impact when the AC call is charged to the battery.
  • a communication power source battery access control device when the battery is charged and discharged, the battery is connected to the bus bar of the power source through the device.
  • the apparatus includes an AC voltage/battery voltage detecting circuit 201, a timing control circuit 202, a relay 203, and a first MOS transistor VT1, wherein:
  • the AC voltage/battery voltage detecting circuit 201 is configured to: detect whether the system AC is powered off and the remaining capacity of the battery, and input the detection result to the timing control circuit 202;
  • the two output ends of the timing control circuit 202 are respectively connected to the gate of the first MOS transistor VT1 and the input end of the relay 203, and are set to: when the system is powered off and the battery voltage is lower than the threshold, the control station The first MOS transistor VT1 is turned on, and the contact of the control relay 203 is turned off; after the contact of the relay 203 is turned off, the control signal for turning off the first MOS transistor VT1 is issued; when the system is in an incoming call, the control relay is turned on. 203 is turned on to achieve normal access of the system;
  • the relay 203 is a relay of a normally closed contact.
  • the first MOS transistor used in another embodiment of the present invention is an NMOS transistor having a large forward-reverse current-passing capability, and of course, a PMOS transistor can also be used; wherein, the MOS transistor specific model The choice is based on the system's load condition and the battery charging current size to consider its flow capacity.
  • the on-time of the MOS transistor is guaranteed to be greater than the operation time of the relay.
  • the on-time of the MOS transistor can be twice as long as the operation time of the relay 203.
  • the heat generation of the MOS transistor should also be considered. If necessary, a heat sink or a MOSFET can be added in parallel to the device. The flow capacity of the MOS tube.
  • the specific implementation of the parallel connection of the two MOS transistors is: adding a third MOS transistor VT3, the gate of the third MOS transistor VT3 is connected to an output terminal of the timing control circuit 202, and the source and the drain are respectively connected Connected to both ends of the relay 203, the gate is also connected to one end of the third capacitor C3, and the other end of the third capacitor C3 is grounded.
  • the charging current flowing through the MOS transistor is too large, and a parasitic diode is connected to the inside of the first MOS transistor and the third MOS transistor, and the two ends of the parasitic diode are respectively connected to the source and the drain of the MOS transistor. pole.
  • the timing control circuit 202 of another embodiment of the present invention includes a first resistor R1, a second resistor R2, a first capacitor Cl, a Zener diode D2, and a transistor VT2, wherein:
  • One end of the first resistor R1 is connected to the output end of the AC voltage/battery voltage detecting circuit 201 and one end of the third resistor R3; the other end of the first resistor R1 is connected to the second resistor R2, and the first resistor R1 is connected in series with the second resistor R2. ;
  • the other end of the second resistor R2 is grounded, and the first capacitor C1 is connected in parallel at both ends of the second resistor R2;
  • Zener diode D2 is connected between the first resistor R1 and the second resistor R2, and the other end is connected to the base of the transistor VT2;
  • the collector of the transistor VT2 is connected to the gate of the first MOS transistor VT1, and the emitter is grounded.
  • the control signal is divided by the first resistor R1 and the second R2 to determine the magnitude of the final charging voltage across the first capacitor C1.
  • the magnitude of the first resistor R1 and the first capacitor C1 determines the length of the charging time.
  • Zener diode D2 determines the minimum turn-on voltage of transistor VT2.
  • the timing control circuit 202 further includes a third resistor R3 coupled between the output of the AC voltage/battery voltage detecting circuit 201 and the collector of the transistor VT2.
  • a third resistor R3 coupled between the output of the AC voltage/battery voltage detecting circuit 201 and the collector of the transistor VT2.
  • the device also includes a second capacitor C2 that is coupled in parallel across the contacts of the relay 203.
  • the apparatus provided by the embodiment of the present invention further includes a fourth resistor R4, the fourth resistor R4 and the second capacitor C2. In series.
  • a high-power first diode is shunted in parallel at both ends of the MOS transistor, and the first diode D1 is juxtaposed at both ends of the contact of the relay 203.
  • the device for controlling the entire access control of the battery according to the embodiment of the present invention is divided into two parts: one is the battery power-off process; the other is the battery access process. The following two parts are explained:
  • the rectifier supplies power to the load and charges the battery.
  • the current is constantly closed by the negative terminal of the battery through the relay, *, the negative flow to the system, and the current is positive flow.
  • the relay contacts are closed, and the MOS transistors VT1, VT3 and the first diode D1 are short-circuited by the contacts of the relay K1, and no current flows.
  • the stored electrical energy is reduced and the voltage is continuously reduced.
  • two MOS tubes VT1 and VT3 having a large current-carrying capability are connected to both ends of the contact of the relay to realize shunt and arc-extinguishing protection of the contacts and complete the disconnection function of the circuit.
  • MOS tube VT1 and VT3 After the battery disconnection control command is issued, first control the MOS transistors VT1 and VT3 to be turned on, and start charging the capacitor C1 through the resistor R1.
  • the operation time of MOS tube VT1 and VT3 is very different from the operation time of relay.
  • the opening time of MOS tube VT1 and VT3 is microsecond, and the operating time of relay is millisecond, usually several milliseconds. Since the internal resistance of the MOS transistor VT1 is small, it is equivalent to a short circuit to the relay contact after the conduction. At the same time, a portion of the current flows through the MOS transistors VT1, VT3, reducing the amount of current in the relay contacts.
  • the relay After the MOS transistors VT1 and VT3 are turned on for a few milliseconds, the relay starts to operate and its contacts are disconnected. Current flows through the MOS tubes VT1, VT3 to the load. At this point, the contact of the relay is disconnected, Arcing discharge will occur. At the same time, the current in the circuit flows from the MOS tubes VT1 and VT3, which reduces the difficulty in disconnecting the relay contacts.
  • the capacitor C2 connected in parallel across the contact of the relay K1 can eliminate the arc and overvoltage that may occur when the contact of the relay K1 is disconnected, so as to double protect the contact.
  • the resistor R4 connected in series with the capacitor C2 mainly acts as a current limiting, and the protection capacitor C2 is not burned out.
  • the embodiment of the utility model realizes the access control of the battery by the following methods:
  • the control of the reverse current on and off is realized by the way that the single-controllable active switch and the relay normally closed contact are connected in parallel, and the relay can be used to quickly access the forward current by the uncontrollable forward current.
  • a small relay with a normally closed contact and two MOS tubes with two ends connected in parallel are used to replace the circuit breaker in the prior art, and the power-off control function of the system is completed. Since the relay itself does not have an arc extinguishing device, the MOS tube can also perform arc extinguishing and protection functions for the relay contacts. In order to prevent the AC incoming call, the charging current flowing through the MOS tube is too large, and a shunted high-power diode is connected in parallel between the source and the drain of the MOS transistor.
  • the device provided by the above technical solution realizes the control of the reverse current on and off by using the one-way controllable active switch and the relay normally closed contact in parallel, and realizes the uncontrollable forward current by the relay. Fast access to the device.
  • the volume of the communication power system is reduced, and the miniaturization and embedded installation of the communication power system are realized. Therefore, the utility model has strong industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Un dispositif de contrôle d'accès pour un accumulateur d'alimentation électrique pour la communication est utilisé dans le domaine des technologies de la communication. Le dispositif comprend un circuit de détection de tension pour courant alternatif/accumulateur, un circuit de commande séquentielle, un relais et le premier transistor MOS. Le circuit de détection de tension alternative/continue est réglé pour détecter la marche/arrêt du courant alternatif du système et la capacité résiduelle d'un accumulateur et pour fournir un résultat de la détection au circuit de commande séquentielle. Les deux bornes de sortie du circuit de commande séquentielle sont connectées respectivement à l'électrode de grille du premier transistor MOS et à la borne d'entrée du relais. Le circuit de commande séquentielle est utilisé pour commander l'état passant du premier transistor MOS et pour ouvrir le relais lorsque le courant alternatif est coupé et que la tension de l'accumulateur est inférieure à une valeur de seuil, et pour fermer le relais lorsque le courant alternatif du système est présent, afin de permettre un accès normal au système. L'électrode de source et l'électrode de drain du premier transistor MOS sont connectées respectivement aux deux bornes du relais. Grâce à ce dispositif, il est possible de répondre aux exigences de miniaturisation et d'intégration des systèmes d'alimentation électrique.
PCT/CN2012/077877 2011-07-25 2012-06-29 Dispositif de contrôle d'accès pour accumulateur d'alimentation électrique pour la communication Ceased WO2013013555A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011202643816U CN202153649U (zh) 2011-07-25 2011-07-25 一种通信电源蓄电池接入控制装置
CN201120264381.6 2011-07-25

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WO2013013555A1 true WO2013013555A1 (fr) 2013-01-31

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CN (1) CN202153649U (fr)
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CN115513956A (zh) * 2022-10-21 2022-12-23 中国铁塔股份有限公司云南省分公司 多功能集成电源
CN117996694A (zh) * 2024-04-07 2024-05-07 广东高斯宝电气技术有限公司 一种用于数字电源的继电器切换保护电路及其充电控制方法

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CN110429681A (zh) * 2019-08-08 2019-11-08 深圳市驰普科达科技有限公司 电池管理控制系统、方法、装置及电子产品
CN110676918B (zh) * 2019-11-08 2024-07-05 湖北民族大学 一种电池开关电路、供电管理系统及方法
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CN115132519A (zh) * 2021-03-26 2022-09-30 深圳市格瑞普电池有限公司 应急电源继电器灭弧控制系统及方法
CN117096979A (zh) * 2023-08-25 2023-11-21 中天宽带技术有限公司 一种用于通信电源系统的电池回路控制电路
CN119210421A (zh) * 2024-11-22 2024-12-27 杭州开闳流体科技有限公司 防拉弧低漏电流的开关电路及其时序控制方法

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CN2102577U (zh) * 1991-09-25 1992-04-22 孙明 不间断供电电源装置
CN101710628A (zh) * 2009-10-20 2010-05-19 海洋王照明科技股份有限公司 一种电池低压保护电路及电池管理电路
CN202153649U (zh) * 2011-07-25 2012-02-29 中兴通讯股份有限公司 一种通信电源蓄电池接入控制装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115513956A (zh) * 2022-10-21 2022-12-23 中国铁塔股份有限公司云南省分公司 多功能集成电源
CN115513956B (zh) * 2022-10-21 2024-05-03 中国铁塔股份有限公司云南省分公司 多功能集成电源
CN117996694A (zh) * 2024-04-07 2024-05-07 广东高斯宝电气技术有限公司 一种用于数字电源的继电器切换保护电路及其充电控制方法

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