DE20109606U1 - Telecommunication system with protection circuit for accumulators - Google Patents

Telecommunication system with protection circuit for accumulators

Info

Publication number
DE20109606U1
DE20109606U1 DE20109606U DE20109606U DE20109606U1 DE 20109606 U1 DE20109606 U1 DE 20109606U1 DE 20109606 U DE20109606 U DE 20109606U DE 20109606 U DE20109606 U DE 20109606U DE 20109606 U1 DE20109606 U1 DE 20109606U1
Authority
DE
Germany
Prior art keywords
telecommunications system
circuit
contactor coil
battery
discharge protection
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.)
Expired - Lifetime
Application number
DE20109606U
Other languages
German (de)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE20109606U priority Critical patent/DE20109606U1/en
Publication of DE20109606U1 publication Critical patent/DE20109606U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Description

200106580200106580

' Beschreibung' Description

Telekommunikationsanlage mit Schutzschaltung für Akkumulatoren
5Telecommunications system with protection circuit for accumulators
5

Die Erfindung betrifft eine Telekommunikationsanlage mit einer Schutzschaltung für Akkumulatoren unter Verwendung eines. Tiefentladeschutzes.The invention relates to a telecommunications system with a protective circuit for accumulators using a deep discharge protection.

Es ist bekannt, bei batteriebetriebenen Telekommunikationsanlagen dieselben durch einen Tiefentladeschutz von der Batterie zu trennen, sobald die Ladeschlussspannung der Batterie erreicht ist.It is known that in battery-operated telecommunications systems, the system is separated from the battery by a deep discharge protection device as soon as the final charging voltage of the battery is reached.

Der Tiefentladeschutz besteht dabei aus einer Schützspule, welche der Batterie und dem Verbraucher parallel geschaltet ist und einen im Batteriestromkreis liegenden Arbeitskontakt, welcher den Batteriestromkreis bei Erreichen der Ladeschlussspannung unterbricht.The deep discharge protection consists of a contactor coil which is connected in parallel to the battery and the consumer and a working contact in the battery circuit which interrupts the battery circuit when the final charging voltage is reached.

Dies geschieht bspw. bei batteriebetriebenen Telekommunika-■tionsanlagen, durch deren Betrieb die Batteriespannung abfällt und der Tiefentladeschutz bei Erreichen der Ladeschlussspannung die Telekommunikationsanlage von der Batterie trennt.This happens, for example, with battery-operated telecommunications systems, during the operation of which the battery voltage drops and the deep discharge protection disconnects the telecommunications system from the battery when the final charging voltage is reached.

Nachteilig ist hierbei jedoch, dass bei einem Kurzschluss am verbraucherseitigen Anschluss die Batteriespannung über deren Innenwiderstand plötzlich abfällt und der Tiefentladeschutz bereits vor dem Auslösen der Sicherung, die im Batteriestromkreis liegt, reagiert und dabei ein Kurzschlussstrom von einigen kA abzuschalten ist.The disadvantage here, however, is that in the event of a short circuit at the consumer-side connection, the battery voltage suddenly drops across its internal resistance and the deep discharge protection reacts before the fuse in the battery circuit is triggered, and a short-circuit current of several kA must be switched off.

Bei derartig hohen Kurzschlussströmen besteht die Gefahr der Zerstörung der Arbeitskontakte des Tiefentladeschutzes.With such high short-circuit currents there is a risk of destruction of the working contacts of the deep discharge protection.

• · · ■· · ■

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Die Erfindung stellt sich deshalb die Aufgabe, eine Schaltungsanordnung zu schaffen, welche bei Einhaltung der Funktion des Tiefentladeschutzes die vorstehend genannten Nachteile beseitigt und ein sicheres Abschalten des Kurzschluss-. stromes durch.die Sicherung gewährleistet, bevor der Tiefentladeschutz die Trennung des Akkumulators von der Telekommunikationsanlage vornimmt.The invention therefore has the object of creating a circuit arrangement which, while maintaining the function of the deep discharge protection, eliminates the disadvantages mentioned above and ensures that the short-circuit current is safely switched off by the fuse before the deep discharge protection disconnects the battery from the telecommunications system.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass zwisehen die Schützspule und dem Arbeitskontakt des Tiefentladeschutzes eine Diode geschaltet ist, welche die Schützspule vom Batteriestromkreis entkoppelt und der Schützspule ein Kondensator parallel geschaltet ist, welcher die Schützspulenspannung bis zum Abschalten des Kurzschlussstromes durch die Sicherung stützt.According to the invention, the object is achieved in that a diode is connected between the contactor coil and the working contact of the deep discharge protection, which decouples the contactor coil from the battery circuit and a capacitor is connected in parallel to the contactor coil, which supports the contactor coil voltage until the short-circuit current is switched off by the fuse.

Figur 1 zeigt eine Telekommünikationsanlage mit einem Tiefentladeschutz für einen Akkumulator gemäß dem bisher bekannten Stand der Technik. 20Figure 1 shows a telecommunications system with a deep discharge protection for a battery according to the state of the art. 20

Figur 2 zeigt beispielhaft eine erfindungsgemäße Telekommunikationsanlage mit Schutzschaltung unter Verwendung eines Tiefentladeschutzes für Akkumulatoren.Figure 2 shows an example of a telecommunications system according to the invention with a protective circuit using a deep discharge protection for accumulators.

In der Schutzschaltung FS ist die Sicherung Si im Batteriestromkreis Ik angeordnet und parallel zur Batterie AK ist der Verbraucher RL und der Tiefentladeschutz TS mit Schützspule K2 und Arbeitskontakt Kl angeordnet, wobei der Arbeitskontakt Kl im Batteriestromkreis liegt.In the protection circuit FS, the fuse Si is arranged in the battery circuit I k and the consumer RL and the deep discharge protection TS with contactor coil K2 and make contact Kl are arranged in parallel to the battery AK, whereby the make contact Kl is in the battery circuit.

Der über dem Tiefentladeschutz TS angeordnete Kontakt K3 dient der Ansteuerung des Tiefentladeschutzes.The contact K3 arranged above the deep discharge protection TS is used to control the deep discharge protection.

Die Batterie AK wird über die Telekommünikationsanlage RL entladen und bei Erreichen der Ladeschlussspannung über denThe battery AK is discharged via the telecommunications system RL and when the final charging voltage is reached, it is charged via the

200106580200106580

Tiefentladeschutz TS und dessen Arbeitskontakt Kl von der Telekommunikationsanlage RL getrennt.Deep discharge protection TS and its working contact Kl separated from the telecommunications system RL.

Bei einem Kurzschluss hinter dem Tiefentladeschutz TS fällt die Batteriespannung von ca. 48 V über deren Innenwiderstand Ri ab, sodass hierdurch der Tiefentladeschutz TS noch vor dem Auslösen der Sicherung Si abfallen kann und dabei einen Kurzschlussstrom von einigen kA zu schalten hat, wodurch der Arbeitskontakt Kl des Tiefentladeschutzes TS zerstört werden kann. *In the event of a short circuit behind the deep discharge protection TS, the battery voltage drops from approx. 48 V across its internal resistance Ri, so that the deep discharge protection TS can drop out before the fuse Si is triggered and has to switch a short-circuit current of several kA, which can destroy the working contact Kl of the deep discharge protection TS. *

In der erfindungsgemäßen Lösung gemäß Figur 2 ist die Schützspule K2 vom Batteriestromkreis durch die parallel zu demselben geschaltete Diode D zwischen.Schützspule K2 und Arbeitskontakt Kl entkoppelt. Die Sicherung Si und der parallel zur Schützspule K2 geschaltete Kondensator C sind so abgestimmt, dass die Schützspulenspannung UK2 solange gestützt wird, bis der Batteriestromkreis durch Abfallen der Sicherung Si infolge des Kurzschlussstromes Ik unterbrochen ist.In the solution according to the invention according to Figure 2, the contactor coil K2 is decoupled from the battery circuit by the diode D connected in parallel to the same between the contactor coil K2 and the working contact K1. The fuse Si and the capacitor C connected in parallel to the contactor coil K2 are coordinated in such a way that the contactor coil voltage UK2 is supported until the battery circuit is interrupted by the fuse Si blowing as a result of the short-circuit current I k .

Durch diese erfindungsgemäße Lösung einer Telekommunikationsanlage ist der Schutz der Arbeitskontakte des Tiefentladeschutzes gegenüber hohen Kurzschlussströmen gesichert.This inventive solution of a telecommunications system ensures the protection of the working contacts of the deep discharge protection against high short-circuit currents.

Claims (2)

1. Telekommunikationsanlage mit Schutzschaltung (FS) für zumindest einen Akkumulator (AK), der zur Speisung der Telekommunikationsanlage (RL) dient, mit a) einem Tiefentladeschutz (TS), welches aufweist 1. zumindest einen Arbeitskontakt (K1) in Reihe zur Telekommunikationsanlage (RL) und 2. eine Schützspule (K2) zur Betätigung des Arbeitskontakts (K1), die parallel zum Akkumulator (AK) und zur Telekommunikationsanlage (RL) angeordnet ist, und mit b) einer Diode (D) in Reihe zur Schützspule (K1) zu deren Entkopplung vom Stromkreis des Akkumulators (AK), und c) einem Kondensator (C) parallel zur Schützspule (K2) zur Stützung der Spannung (UK2) an der Schützspule (K2). 1. Telecommunications system with protective circuit (FS) for at least one accumulator (AK) which serves to supply the telecommunications system (RL), with a) a deep discharge protection (TS), which has 1. at least one normally open contact (K1) in series with the telecommunications system (RL) and 2. a contactor coil (K2) for actuating the working contact (K1), which is arranged parallel to the accumulator (AK) and the telecommunications system (RL), and with b) a diode (D) in series with the contactor coil (K1) to decouple it from the circuit of the accumulator (AK), and c) a capacitor (C) parallel to the contactor coil (K2) to support the voltage (UK2) at the contactor coil (K2). 2. Telekommunikationsanlage mit Schutzschaltung nach Anspruch 1 mit einer Sicherung (Si) in Reihe zum Akkumulator (AK), wobei die Sicherung (Si) und der Kondensator (C) so abgestimmt sind, dass im Falle eines Kurzschlusses (IK) an der Telekommunikationsanlage (RL) die Sicherung (Si) auslöst, bevor die Stützung der Spannung (UK2) an der Schützspule (K1) abgeklungen ist. 2. Telecommunications system with protective circuit according to claim 1 with a fuse (Si) in series with the accumulator (AK), wherein the fuse (Si) and the capacitor (C) are coordinated such that in the event of a short circuit (IK) at the telecommunications system (RL), the fuse (Si) trips before the support of the voltage (UK2) at the contactor coil (K1) has decayed.
DE20109606U 2001-06-08 2001-06-08 Telecommunication system with protection circuit for accumulators Expired - Lifetime DE20109606U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20109606U DE20109606U1 (en) 2001-06-08 2001-06-08 Telecommunication system with protection circuit for accumulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20109606U DE20109606U1 (en) 2001-06-08 2001-06-08 Telecommunication system with protection circuit for accumulators

Publications (1)

Publication Number Publication Date
DE20109606U1 true DE20109606U1 (en) 2002-07-11

Family

ID=7957905

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20109606U Expired - Lifetime DE20109606U1 (en) 2001-06-08 2001-06-08 Telecommunication system with protection circuit for accumulators

Country Status (1)

Country Link
DE (1) DE20109606U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2482412A2 (en) * 2011-05-04 2012-08-01 Huawei Technologies Co., Ltd. Switch control circuit for power supply and power supplying circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2482412A2 (en) * 2011-05-04 2012-08-01 Huawei Technologies Co., Ltd. Switch control circuit for power supply and power supplying circuit
EP2482412A4 (en) * 2011-05-04 2013-11-06 Huawei Tech Co Ltd Switch control circuit for power supply and power supplying circuit

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20020814

R156 Lapse of ip right after 3 years

Effective date: 20050101