KR960013699B1 - Overcharge preventing method of charge-battery in wireless telephone - Google Patents

Overcharge preventing method of charge-battery in wireless telephone Download PDF

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Publication number
KR960013699B1
KR960013699B1 KR1019930028359A KR930028359A KR960013699B1 KR 960013699 B1 KR960013699 B1 KR 960013699B1 KR 1019930028359 A KR1019930028359 A KR 1019930028359A KR 930028359 A KR930028359 A KR 930028359A KR 960013699 B1 KR960013699 B1 KR 960013699B1
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South Korea
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low voltage
rechargeable battery
battery
state
alarm
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KR1019930028359A
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Korean (ko)
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KR950022675A (en
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김순진
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삼성전자 주식회사
김광호
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0262—Details of the structure or mounting of specific components for a battery compartment

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

(205) generating a recharge alarm in the state of low voltage by checking the charge-battery; (206) checking whether the charge-battery is in the extremely low voltage; and (209) blocking the recharge alarm and (208) blocking the power of the charge-battery when the charge-battery is in the extremely low voltage.

Description

무선전화기에서 충전배터리의 과방전 방지방법How to prevent over discharge of rechargeable battery in cordless phone

제1도는 종래의 무선전화기의 과방전 방지회로도.1 is an overdischarge prevention circuit diagram of a conventional wireless telephone.

제2도는 종래의 과방전 방지를 제어하는 흐름도.2 is a flow chart for controlling the conventional over-discharge prevention.

제3도는 본 발명에 따른 배터리 과방전 방지회로도.3 is a battery over-discharge prevention circuit diagram according to the present invention.

제4도는 본 발명에 따른 충전배터리의 과방전 방지 제어 흐름도.4 is a flowchart illustrating an over discharge prevention control of a rechargeable battery according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

20 : 전원제어부 22 : 저전압 검출부20: power supply control unit 22: low voltage detection unit

24 : 극저전압 검출부 26 : MPU24: ultra low voltage detection unit 26: MPU

28 : 스피커 30 : 표시부28: speaker 30: display unit

본 발명은 무선전화기의 과방전 방지방법에 관한 것으로, 특히 무선전화기의 휴대장치에서 배터리 과방전에 의한 이상동작 발생을 방지하는 과방전 방지방법에 관한 것이다.The present invention relates to a method for preventing overdischarge of a wireless telephone, and more particularly, to an overdischarge prevention method for preventing occurrence of abnormal operation due to battery overdischarge in a portable device of a wireless telephone.

일반적으로 무선전화기의 휴대장치(handset unit)는 고정장치(Base unit)와 무선통신을 수행하는 장치로, 충전배터리로부터 전원을 공급받아 동작된다. 따라서 상기 휴대장치의 충전배터리는 항상 통화가능한 상태로 충전되어 있어야 한다. 그런데 상기 충전백터리가 과방전되어 일정전압 이하로 떨어지게 되면 휴대장치가 이상동작을 하게 되어 통화기능을 할 수 없게 된다.In general, a handset unit of a wireless telephone is a device that performs wireless communication with a base unit, and is operated by receiving power from a rechargeable battery. Therefore, the rechargeable battery of the portable device should always be charged in a callable state. However, when the charge battery is over-discharged and falls below a certain voltage, the portable device may malfunction, and thus the call function may not be performed.

제1도는 종래의 무선전화기의 과방전 방지회로도이고, 제2도는 종래의 과방전 방지를 제어하는 흐름도이다.1 is an over-discharge prevention circuit diagram of a conventional radiotelephone, and FIG. 2 is a flowchart for controlling the conventional over-discharge prevention.

상술한 제1-제2도를 참조하여 종래의 과방전에 의한 이상동작을 방지하는 동작을 살펴보면, 무선전화기에서 고정장치로부터 충전단자를 통해 전원을 공급받아 충전배터리(BA)에 충전을 하여 휴대장치를 사용하게 된다. 이때 충전배터리(BA)로부터 방전되는 전원상태를 저전압 검출부(12)에서 저전압으로 떨어지는가를 검출한다. 상기 저전압 검출부(12)로부터 저전압이 검출되면 MPU(Micro Processor Unit : 이하 MPU라함)는 충전배터리의 사용한계가 되었다는 과방전상태를 알리기 위한 신호를 스피커(18) 및 표시부(16)로 송출하여 경보음과 경보표시를 한다. 그런후 상기 MPU(14)는 일정시간이 경과되면 전원제어부(20)를 제어하여 각 장치로 공급되는 전원을 차단한다. 상기와 같이 상기 저전압 검출부(12)로부터 저전압이 검출될시 MPU(14)에서 과방전 경보를 울리고 전원제어하는 동작을 제2도에서 살펴보면, 먼저 101단계에서 MPU(14)는 제3포트(CDET)의 상태를 읽어들여 충전중인가를 검사하여 충전중이 아니면 102단계에서 과방전 경보를 차단하고 충전배터리(BA)로 충전을 한다. 상기 제101단계에서 충전상태가 아니면 103단계로 진행하여 MPU(14)는 저전압 검출부(12)로부터 제1포트(VDET)를 통해 저전압상태가 되었는가 검사하여 저전압상태가 되었으면 104단계로 진행하여 타이머를 구동시키고 105단계로 진행한다. 상기 105단계에서 MPU(14)는 과방전 경보음 및 경보표시신호를 발생시켜 스피커(18) 및 표시부(16)로 송출한다. 그런후 106단계에서 MPU(14)는 설정된 시간이 경과되었는가 검사하여 설정된 시간이 경과되지 않았으면 상기 105단계로 돌아가 경보음 및 경보표시신호를 계속해서 발생시키고, 설정된 시간이 경과되면 107단계에서 경보음 및 경보표시신호를 차단하고 전원차단제어신호를 발생하여 전원제어부(10)로 인가하므로 상기 전원제어부(10)에서는 충전배터리(BA)의 공급전원을 차단한다.Referring to FIG. 1 to FIG. 2, the operation of preventing the abnormal operation by the conventional overdischarge is described. In the wireless telephone, the mobile device receives the power from the fixing device through the charging terminal and charges the rechargeable battery BA. Will be used. At this time, it is detected whether the power supply state discharged from the charge battery BA falls to the low voltage in the low voltage detector 12. When a low voltage is detected from the low voltage detection unit 12, the MPU (Micro Processor Unit (hereinafter referred to as MPU)) sends a signal to the speaker 18 and the display unit 16 to signal an over-discharge state that the usage limit of the rechargeable battery has been reached. Sound and alarm display. Then, the MPU 14 controls the power control unit 20 to cut off the power supplied to each device after a predetermined time elapses. As shown in FIG. 2, when the low voltage is detected from the low voltage detector 12, the MPU 14 emits an over-discharge alarm and controls power. Read the status of) and check if it is charging. If not, cut off the over-discharge alarm in step 102 and charge the battery with BA. If it is not in the charge state in step 101, the process proceeds to step 103 and the MPU 14 checks whether it is in a low voltage state from the low voltage detector 12 through the first port VDET. Run it and proceed to step 105. In step 105, the MPU 14 generates an over-discharge alarm sound and an alarm display signal, and sends the same to the speaker 18 and the display unit 16. Then, in step 106, the MPU 14 checks whether the set time has elapsed. If the set time has not elapsed, the MPU 14 returns to step 105 to continuously generate an alarm sound and an alarm display signal, and when the set time elapses, the alarm in step 107. Since the sound and alarm display signals are blocked and a power cutoff control signal is generated and applied to the power control unit 10, the power control unit 10 cuts off the supply power of the rechargeable battery BA.

상기와 같은 종래의 과방전 방지방법은 충전배터리(BA)가 저전압상태가 된 후 설정된 일정시간이 경과된 후에야 전원제어부(10)를 제어하여 충전배터리 (BA)의 전원을 차단한다. 따라서 저전압이 검출된 후 설정된 일정시간이 경과되기 이전에 극저전압으로 떨어지게 되면 충전배터리(BA)는 완전방전상태가 파괴되므로, 충전배터리(BA)를 사용할 수 없는 상태가 되어 수명이 짧아지고, 또한 휴대장치의 메모리에 기억된 데이타가 유실되어 충전배터리를 교체하더라도 무선전화기를 사용할 수 없는 문제점이 있었다.In the conventional over-discharge prevention method as described above, after the predetermined time elapses after the charge battery BA becomes the low voltage state, the power control unit 10 is controlled to cut off the power supply of the charge battery BA. Therefore, when the low voltage is detected and the voltage falls to the low voltage before the set time elapses, the battery BA is completely discharged. Therefore, the battery BA becomes unusable and the life is shortened. The data stored in the memory of the portable device was lost, so there was a problem in that the wireless telephone cannot be used even when the rechargeable battery is replaced.

따라서 본 발명의 목적은 상기와 같은 문제점을 해결하기 위한 과방전 방지방법을 제공함에 있다.It is therefore an object of the present invention to provide an over-discharge prevention method for solving the above problems.

본 발명의 다른 목적은 무선전화기의 과방전으로 이상동작을 방지하는 과방전 방지방법을 제공함에 있다.Another object of the present invention is to provide an over-discharge prevention method for preventing abnormal operation by over-discharge of a wireless telephone.

본 발명의 또 다른 목적은 무선전화기에서 충전배터리가 저전압상태가 검출된 후 극저전압으로 검출되면 충전배터리의 방전을 차단하는 과방전 방지방법을 제공함에 있다.Another object of the present invention is to provide an over-discharge prevention method for blocking the discharge of the charge battery when the charge battery is detected at a very low voltage after the low voltage state is detected in the wireless telephone.

상기 목적을 달성하기 위한 본 발명은 상기 충전배터리의 상태를 체크하여 저전압상태로 검출될시 재충전경보를 발생하고, 상기 재충전경보를 발생한 후 상기 충전배터리가 극저전압상태로 검출될시 충전배터리의 전원을 차단함을 특징으로 한다.The present invention for achieving the above object is to check the state of the rechargeable battery to generate a recharge alarm when detected in a low voltage state, after the recharge alarm is generated when the charge battery is detected in a very low voltage state power supply of the rechargeable battery It is characterized by blocking.

이하 본 발명을 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

제3도는 본 발명에 따른 배터리 과방전 방지회로도로서, 충전단자를 통해 전원을 공급받아 충전을 하는 충전배터리(BA)와, 상기 충전배터리(BA)로부터 전원을 공급받아 저전압상태를 검출하여 출력하는 저전압 검출부(22)와, 상기 충전배터리(BA)로부터 전원을 공급받아 극저전압상태를 검출하여 출력하는 극저전압검출부(24)와, 충전단자로부터 공급되는 전원을 입력하여 충전유무를 검출하고, 상기 저전압 검출부(22)로부터 저전압상태로 검출될시 재충전 경보신호를 발생하며, 상기 극저전압 검출부(24)로부터 극저전압상태로 검출될시 전원공급 차단제어신호를 발생하는 MPU(26)와, 상기 MPU(26)로부터 발생된 재충전 경보신호를 받아 경보음을 발생하는 스피커(28)와, 상기 MPU(26)로부터 발생된 재충전 경보신호를 받아 경보상태를 표시하는 표시부(30)로 구성되어 있다.3 is a battery over-discharge prevention circuit diagram according to the present invention, the charge battery (BA) for charging by receiving power through the charging terminal, and receives the power from the charge battery (BA) to detect and output a low voltage state The low voltage detecting unit 22, the ultra low voltage detecting unit 24 which receives power from the charging battery BA, detects and outputs an ultra low voltage state, and inputs power supplied from the charging terminal to detect whether the battery is charged. The MPU 26 generates a recharge alarm signal when the low voltage detection unit 22 detects a low voltage state, and generates a power supply cutoff control signal when the low voltage detection unit 24 detects the low voltage state. A speaker 28 for receiving the recharge alarm signal generated from the 26 and generating an alarm sound, and a display unit 30 for receiving the recharge alarm signal generated from the MPU 26 and displaying an alarm state. It can control.

제4도는 본 발명에 따른 충전배터리의 과방전 방지 제어 흐름도로서, 충전배터리의 상태를 점검하여 저전압상태인가를 검출하는 저전압 검출과정과, 상기 저전압 검출과정에서 충전배터리가 저전압으로 검출될시 재충전 경보신호를 발생하는 재충전 경보신호 발생과정과, 상기 재충전 경보신호 발생과정에서 재충전 경보신호를 발생한 후 상기 충전배터리가 극저전압상태인가 검출하는 극저전압 검출과정과, 상기 극저전압 검출과정에서 극저전압상태로 검출되면 상기 재충전 경보신호를 차단하고 상기 충전배터리의 전원공급을 차단하는 제1전원차단과정과, 상기 극저전압 검출과정에서 극저전압상태로 검출되지 않으면 설정된 시간이 경과된 후 상기 충전배터리의 전원공급을 차단하는 제2전원차단과정으로 이루어진다.4 is a flowchart illustrating an over-discharge prevention control of a rechargeable battery according to the present invention, wherein a low voltage detection process for checking whether a low voltage state is detected by checking a state of a charge battery and a recharge alarm when the charge battery is detected at a low voltage during the low voltage detection process are illustrated in FIG. A recharge alarm signal generation process for generating a signal, an ultra low voltage detection process for detecting whether the rechargeable battery is in an extremely low voltage state after generating a recharge alarm signal during the recharge alarm signal generation process, and a low voltage state in the ultra low voltage detection process A first power cut-off step of blocking the recharge alarm signal and blocking the power supply of the rechargeable battery if detected, and supplying power to the rechargeable battery after a set time has elapsed if the low-voltage state is not detected in the low voltage detection process It is made of a second power off process to cut off.

상술한 제3-제4도를 참조하여 본 발명의 바람직한 일 실시예를 상세히 설명한다.One preferred embodiment of the present invention will be described in detail with reference to FIGS.

201단계에서 MPU(26)는 제3포트(CDET)의 상태를 읽어들여 충전중인가를 검사하여 충전중이면 202단계에서 과방전 경보를 차단하고 충전배터리(BA)로 충전을 한다. 상기 제201단계에서 충전상태가 아니면 203단계로 진행하여 MPU(14)는 저전압 검출부(12)로부터 제1포트(VDET)를 통해 저전압상태가 되었는가 검사하여 저전압상태가 되었으면 204단계로 진행하여 타이머를 구동시키고 205단계로 진행한다. 상기 205단계에서 MPU(26)는 과방전 경보음 및 경보표시신호를 발생시켜 스피커(28) 및 표시부(30)로 송출한다. 그런후 206단계에서 MPU(26)는 극저전압 검출부(24)로부터 제2포트(STDET)를 통해 극저전압상태가 되었는가 검사하여 극저전압상태가 되었으면 209단계로 진행한다. 상기 209단계에서 MPU(26)는 경보음 및 경보표시신호를 차단하고 208단계로 진행하여 전원차단제어신호를 발생하여 전원제어부(20)로 인가하므로 상기 충전배터리(BA)의 전원을 차단한다. 그러나 상기 206단계에서 극저전압이 검출되지 않으면 207단계로 진행하여 MPU(26)는 설정된 시간이 경과되었는가 검사하여 설정된 시간이 경과되지 않았으면 상기 205단계로 돌아가 경보음 및 경보표시신호를 계속해서 발생시키고, 설정된 시간이 경과되면 208단계에서 경보음 및 경보표시신호를 차단하고 전원차단제어신호를 발생하여 전원제어부(10)로 인가하므로서 상기 전원제어부(20)에서는 충전배터리(BA)의 전원을 차단한다.In step 201, the MPU 26 reads the state of the third port CDET and checks whether it is being charged. If it is being charged, the MPU 26 blocks the over-discharge alarm in step 202 and charges the rechargeable battery BA. In step 201, if it is not in the charged state, the process proceeds to step 203 and the MPU 14 checks whether the low voltage state is reached from the low voltage detection unit 12 through the first port VDET. Run and proceed to step 205. In step 205, the MPU 26 generates an over-discharge alarm sound and an alarm display signal, and sends the same to the speaker 28 and the display unit 30. Thereafter, in step 206, the MPU 26 checks whether or not the ultra low voltage state is in the ultra low voltage state from the ultra low voltage detection unit 24 through the second port STDET. In step 209, the MPU 26 cuts off an alarm sound and an alarm display signal. In step 208, the MPU 26 generates a power cutoff control signal and applies the power cutoff control signal to the power controller 20 to cut off the power of the rechargeable battery BA. However, if the very low voltage is not detected in step 206, the process proceeds to step 207, and the MPU 26 checks whether the set time has elapsed, and if the set time has not elapsed, returns to step 205 to continuously generate an alarm sound and an alarm display signal. When the set time has elapsed, in step 208, the alarm sound and the alarm display signal are cut off, and a power cutoff control signal is generated and applied to the power control unit 10, so that the power source of the rechargeable battery BA is cut off. do.

상술한 바와같이 무선전화기에서 충전배터리의 상태를 체크하여 저전압상태가 될시 재충전경보를 발생하여 사용자에게 알리고, 극저전압상태가 되면 설정된 시간에 관계없이 충전배터리의 전원을 차단하여 충전배터리가 완전방전되어 충전배터리의 수명이 짧아지는 것을 방지할 수 있고, 또한 저전압상태에서 급격한 전압강하에 의한 이상동작을 방지할 수 있는 이점이 있다.As described above, the state of the rechargeable battery is checked in the wireless telephone to generate a recharging alarm to notify the user when the low voltage is reached, and when the low voltage is reached, the rechargeable battery is completely discharged by cutting off the power of the rechargeable battery regardless of the set time. Therefore, it is possible to prevent the life of the rechargeable battery from being shortened, and also to prevent abnormal operation caused by a sudden voltage drop in a low voltage state.

Claims (3)

무선전화기에서 충전배터리의 과방전 방지방법에 있어서, 상기 충전배터리의 상태를 체크하여 저전압 상태가 될시 재충전경보를 발생하고, 상기 재충전경보를 발생한 후 상기 충전배터리가 극저전압상태로 될시 충전배터리의 전원을 차단함을 특징으로 하는 충전배터리의 과방전 방지방법.In a method of preventing overdischarge of a rechargeable battery in a wireless telephone, the state of the rechargeable battery is checked to generate a recharge alarm when the low voltage state is reached, and when the charge battery becomes an extremely low voltage state after the recharge alarm is generated. Method for preventing over-discharge of the rechargeable battery, characterized in that the power off. 무선전화기에서 충전배터리의 과방전 방지방법에 있어서, 충전배터리의 상태를 점검하여 저전압상태인가를 검출하는 저전압 검출과정과, 상기 저전압 검출과정에서 충전배터리가 저전압으로 검출될 재충전 경보신호를 발생하는 재충전 경보신호 발생과정과, 상기 재충전 경보신호 발생과정에서 재충전 경보신호를 발생한 후 상기 충전배터리가 극저전압상태인가 검출하는 극저전압 검출과정과, 상기 극저전압 검출과정에서 극저전압상태로 검출될시 상기 재충전 경보신호를 차단하고 상기 충전배터리의 전원공급을 차단하는 제1전원차단과정으로 이루어짐을 특징으로 하는 충전배터리의 과방전 방지방법.A method of preventing overdischarge of a rechargeable battery in a cordless telephone, the method comprising: a low voltage detection step of checking a state of a rechargeable battery and detecting whether a low voltage state is present; An alarm signal generation process, an ultra low voltage detection process for detecting whether the rechargeable battery is in an extremely low voltage state after generating a recharge alarm signal in the recharge alarm signal generation process, and recharging when an ultra low voltage state is detected in the ultra low voltage detection process A method of preventing over discharge of a rechargeable battery, characterized in that the first signal is cut off to cut off an alarm signal and cut off the power supply of the rechargeable battery. 제2항에 있어서, 상기 극저전압 검출과정에서 극저전압상태로 검출되지 않으면 설정된 시간이 경과된 후 상기 충전배터리의 전원공급을 차단하는 제2전원차단과정을 더 구비함을 특징으로 하는 충전배터리의 과방전 방지 방법.The method of claim 2, further comprising: a second power cut-off step of shutting off power supply of the rechargeable battery after a set time has elapsed if the ultra low voltage is not detected in the ultra low voltage detection process. How to prevent over discharge.
KR1019930028359A 1993-12-18 1993-12-18 Overcharge preventing method of charge-battery in wireless telephone KR960013699B1 (en)

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