JP2007104745A - Mobile communication terminal and battery pack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the imitation of a battery pack even if it is over-discharged. <P>SOLUTION: An electronic apparatus 2 detects mount/demount of a battery pack 1 at a temperature detecting section 13, performs initial charging of the battery pack if an output voltage is not produced therefrom when the electronic apparatus 2 is connected with the battery pack 1 through a power supply line, and actuates a power supply 3 based on a power supplied from the battery pack 1 side when a battery signal coincides with a set signal inherent to the battery pack 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for identifying whether or not a battery pack mounted on a mobile communication terminal device is a regular battery pack.

  Generally, a mobile communication terminal device such as a mobile phone is configured such that a battery pack that supplies power to the device main body is detachable from the device main body. Thereby, when a battery pack deteriorates, it becomes possible to use a communication terminal device on hand continuously by exchanging the battery pack.

  Therefore, the current situation is that the battery pack is duplicated in conformity with the communication terminal device sold in the market, and the duplicated battery pack is distributed in the market like a dry battery. In addition, what is called a lithium ion battery is generally used for the battery pack used for mobile communication terminal devices, such as a mobile telephone. Since this lithium ion battery has a higher energy density than a dry cell, a battery pack maker performs design and manufacture that fully considers safety.

  It should be noted that a battery pack manufactured without permission from the past has been continually sought after, and the battery pack manufactured by such a company not only pursues cost reduction but also includes poor products in duplicate battery packs. In other words, battery packs that are likely to cause high-temperature heat generation or explosion during use or charging of the mobile communication terminal device are currently in circulation.

  A conventional battery pack will be described with reference to FIG. 4, and a battery pack for suppressing imitation will be described with reference to FIGS. 5 and 6.

  In FIG. 4, the battery pack 1 includes a battery 11, a battery protection control unit 12 for protecting the battery 11, a temperature detection unit 13 for transmitting temperature information, and an input / output terminal for electrical connection with the electronic device 2. It is composed of a + terminal 141, a T terminal 142, and a − terminal 143.

  The electronic device 2 has a + terminal 243 as an input / output terminal for electrical connection with the battery pack 1, a T terminal 244, a − terminal 245 and an input / output terminal for electrical connection with the power source 3 as a + terminal 241 and a − terminal 242. The charging control unit 22 for controlling the charging of the battery pack 1, the switch element 21, and the other constituent circuit unit 23 for configuring the electronic device 2.

  In FIG. 5, a battery pack 1 includes a battery 11, a battery protection control unit 12 for protecting the battery 11, a microcomputer 15 for storing and communicating information, a temperature detection unit 14 for transmitting temperature information, and an electronic device 2. As input / output terminals for electrical connection, a + terminal 141, an S terminal 144, a T terminal 142, and a-terminal 143 are configured.

  The electronic device 2 has a positive terminal 243 as an input / output terminal for electrical connection with the battery pack 1, a positive terminal as an input / output terminal for electrical connection with the S terminal 246, the T terminal 244, the negative terminal 245 and the power source 3. 241, -terminal 242, charging control of the battery pack 1, microcomputer 25 and switch element 21 for authentication, and other constituent circuit unit 23 for configuring the electronic device 2.

  In FIG. 6, when the battery pack 1 is attached to the electronic device 2 (S102), a data request command (S103) is transmitted from the microcomputer 25 of the electronic device 2 to the battery pack 1. The battery pack 1 receives the data request command (S104) and transmits the data (S105) in the storage unit 153 of the microcomputer 15. The data (S106) received by the microcomputer 25 is collated with the storage unit 254, and the battery pack 1 is certified (S107).

  If the battery pack 1 is applicable, the battery pack applicable command is transmitted to the CPU included in the other constituent circuit unit 23 (S108), and the microcomputer 25 receives the battery pack charge permission command (S109) and charges the battery pack 1. Start (S110).

  If the battery pack 1 is not applicable, a battery pack non-applicable command is transmitted to the CPU included in the other configuration circuit unit 23 (S112), and the microcomputer 25 receives the battery pack charge disable command (S113). The non-corresponding battery pack is displayed on the display unit included in the unit 23 (S114).

  Here, the code generation unit and the code length determination unit of the telephone body generate a code string in which the data length and the contents are random, and the ID generation unit of the telephone body and the ID of the battery pack based on the generated code string In the generation unit, an ID code is generated by the same calculation process. When the ID code generated by the ID generation unit of the phone main body and the ID generation unit of the battery pack is the same, the battery pack is A technique for identifying a device as a device has been proposed (see, for example, Patent Document 1).

Further, in a communication processing control circuit including a power control unit that is controlled by the communication control CPU and performs a power supply line communication process, two inductors are connected in series between the power input terminal and the power supply circuit. Connect a transformer between the transmission terminal, the reception terminal and the power supply circuit, and provide a filter with two capacitors in series and one resistor connected in parallel between the transformer and the power supply circuit. Thus, there has been proposed a communication processing control circuit that can be used for both an AC power supply and a DC power supply and that can use a low-voltage transformer (see, for example, Patent Document 2).
JP 2003-162986 A JP 2005-159921 A

  However, the conventional example described above has the following problems.

  The number of battery terminals of the battery pack having the imitation suppression function increased with respect to the battery pack having no imitation suppression function, and the presence or absence of the imitation suppression function could be determined by the number of terminals.

  Further, since the terminal for data transmission / reception is inherently unique, the terminal for data transmission / reception can be easily identified.

  Furthermore, when an overdischarged battery pack is attached due to long-term storage or the like, it may be difficult to detect attachment / detachment.

  This invention is made | formed in view of the situation demonstrated above, The objective is to suppress imitation even if a battery pack is overdischarged.

  In order to solve the above-described problems, the present invention provides a mobile communication terminal device in which a battery pack serving as a power supply source is detachable, and the mobile communication terminal device detects whether a battery pack is attached or removed. When there is no output voltage from the battery pack when it is electrically connected to the battery pack via the power line, the battery pack is initially charged and the battery is input from the battery pack via the power line. Based on the battery signal specific to the pack, it is determined whether or not the battery signal matches the signal specific to the battery pack set on the mobile communication terminal device side. Provided is a mobile communication terminal device having means for starting a main power supply based on electric power supplied from the side.

  The present invention also provides a battery pack as a power supply source for a communication terminal device, wherein the battery pack is configured to be detachable from the communication terminal device. When there is no output voltage when electrically connected to the communication terminal device and the power line through the terminal, initial charging is performed, and the communication terminal device and the power line are electrically connected, When an arbitrary signal generated in the communication terminal device is input via the power line, the input arbitrary signal and an identification signal specific to the battery pack are combined to generate a battery signal specific to the battery pack. A battery pack having means for generating and outputting the generated battery signal to a communication terminal device via a power line is provided.

  According to the present invention, imitation can be suppressed even if the battery pack is overdischarged.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

  Referring to FIG. 1, a configuration of a battery pack 1 that suppresses imitation in the present embodiment is shown.

  In the figure, a battery pack 1 transmits a battery 11, a battery protection control unit 12 for protecting the battery 11, a microcomputer 17 for storing and communicating information, a filter unit 16 for suppressing noise in the power supply line, and temperature information. The temperature detection unit 13 is configured to include a + terminal 141, a T terminal 142, and a − terminal 143 as input / output terminals for electrical connection with the electronic device 2.

  The electronic device 2 includes a positive terminal 243, an T terminal 244, and a negative terminal 245 as input / output terminals for electrical connection with the battery pack 1, and a positive terminal 241, a negative terminal as input / output terminals for electrical connection with the power source 3. 242, the microcomputer 26 and the switch element 21 for voltage detection, charging control and authentication of the battery pack 1, the filter unit 152 for suppressing noise in the power supply line, and the other configuration circuit unit 23 for configuring the electronic device 2. In the battery pack 1 authentication process, the output voltage of the battery pack 1 is detected to determine whether or not data can be transmitted and received as a voltage waveform via the power line of the + terminal 141 and the + terminal 241 of the electronic device 2. Yes.

  The other circuit configuration unit 23 shown in FIG. 1 is well known to those skilled in the art, and a detailed description thereof will be omitted.

  Next, the battery pack authentication operation of FIG. 1 will be described in detail with reference to the time chart shown in FIG.

  In FIG. 2, when the battery pack 1 is attached to the electronic device 2 (S202), the output voltage of the battery pack 1 is detected by the charge control unit 261 of the microcomputer 26 of the electronic device 2 (S203).

When the detection voltage Vo is smaller than the overdischarge voltage V _B0 of the battery pack 1, initial charging is performed with a small current of about several mA (S204), and charging is performed until it becomes larger than the overdischarge voltage V _B0 of the battery pack 1.

  Then, a pulse output command is transmitted from the communication control unit 263 of the microcomputer 26 of the electronic device 2 to the pulse control unit 264 of the microcomputer 26 and the other circuit configuration unit 23 (S205).

  The pulse control unit 264 transmits the voltage waveform from the signal transmission / reception unit 262 of the microcomputer 26 to the microcomputer 17 of the battery pack 1 via the + terminals 243 and 141 (S207).

  The voltage waveform is received by the signal transmission / reception unit 171 of the microcomputer 17 (S208), and a pulse output command is transmitted from the communication control unit 172 to the pulse control unit 173 (S209).

  The pulse control unit 173 transmits the voltage waveform from the signal transmission / reception unit 171 to the microcomputer 26 of the electronic device 2 via the + terminals 141 and 243 (S210).

  The voltage waveform is received by the signal transmission / reception unit 262 (S211), and the pulse reception data is transmitted from the communication control unit 263 to the other circuit configuration unit 23 (S212).

  The other circuit configuration unit 23 compares and authenticates the data (S214) generated from the reception of the pulse output command from the communication control unit 263 (S213) and the pulse reception data (S215), and communicates the command corresponding to the battery pack if the authentication is OK. The data is transmitted to the control unit 263 (S216), the charge control unit 261 receives the battery pack corresponding command (S217), and the charge control unit 261 starts charging the battery pack 1 (S218).

  In the case of authentication NG, the battery pack non-applicable command is transmitted / received to / from the other circuit configuration unit 23 (S220, S221), and the other circuit configuration unit 23 performs non-applicable display (S222).

  Similarly, when the voltage waveform is not received by the signal transmission / reception unit 262 (S211 ′), the same processing as in the case of authentication NG is performed.

  According to the above embodiment, the attachment / detachment detection of the battery pack to / from the mobile communication terminal device body is performed by the output voltage of the battery pack, and the battery pack that has been over-discharged due to long-term storage or the like is attached. However, it is possible to prevent that the attachment / detachment detection cannot be performed because there is no output voltage, and it is possible to prevent the legitimate battery pack from being determined to be a counterfeit product even in a situation such as overdischarge.

  Further, by detecting the battery pack voltage, data leakage due to data transmission / reception during the protection function operation can be prevented.

  In addition, it is difficult to determine the presence / absence of the imitation suppression function based on the number of battery terminals of the battery pack, and it is difficult to determine transmission / reception data because the terminal for data transmission / reception is performed via a power line.

  Moreover, each data different with respect to the charge voltage level of a battery pack is transmitted / received, and data discrimination becomes difficult.

  Next, a second embodiment of the present invention will be described. The basic configuration is the same as that of the first embodiment shown in FIG. 1, but the device is further devised for the charging voltage detection processing of the battery pack 1. The detection process is shown in FIG.

  In this figure, the charging voltage detection of the battery pack 1 is performed in N stages (S319), and individual commands, pulse transmission / reception, and data generation (S305 to S314) are performed in each stage to improve imitation suppression.

  In FIG. 3, a storage control unit 174 and a storage unit 175 are added to the microcomputer 17 of the battery pack 1, and a storage control unit 265 and a storage unit 266 are similarly added to the microcomputer 26 of the electronic device 2. Imitation suppression is improved by storing and controlling a plurality of patterns.

  Each of the above-described embodiments is a preferred embodiment of the present invention, and various modifications can be made without departing from the scope of the present invention. For example, the processing for realizing the function of the device may be performed by causing the device to read and execute a program for realizing the function of the mobile communication terminal device in the above embodiment. Further, the program is transmitted to another computer system by a transmission wave via a computer-readable recording medium such as a CD-ROM or a magneto-optical disk, or via a transmission medium such as the Internet or a telephone line. Also good.

  Furthermore, the present invention is effective when applied to a case where the result of a certain service is used by another service or a case where the result of a plurality of services is used as a single service. Applicable to applications such as mail order service, electronic application service, moving service, education service, security service, regional service, financial service, content service. It can also be applied to existing services provided by ISPs.

It is a block diagram of the battery pack in the 1st Embodiment of this invention. It is a timing chart which shows the processing operation in the 1st Embodiment of this invention. It is a timing chart which shows processing operation in a 2nd embodiment of the present invention. It is a block diagram of the conventional battery pack. It is a timing chart which shows the conventional processing operation. It is a timing chart which shows the conventional processing operation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery pack 2 Electronic device 3 Power supply 11 Battery 12 Battery protection control part 13 Temperature detection part 16 Filter part 17 Microcomputer 21 Switch element 23 Other component circuit part 26 Microcomputer 141, 241, 243 + terminal 142, 244 T terminal 143, 242 245-terminal 152 filter section

Claims (6)

A mobile communication terminal device constructed so that a battery pack serving as a power supply source is detachable,
The mobile communication terminal device
When the battery pack is attached / detached with a temperature detection terminal and electrically connected to the battery pack via a power line, when there is no output voltage from the battery pack, initial charge of the battery pack is performed, Based on the battery signal specific to the battery pack input from the battery pack via the power line, the battery signal matches the signal specific to the battery pack set on the mobile communication terminal device side. The mobile communication terminal device has means for starting a main power source based on the power supplied from the battery pack side when it is determined that the two match.   2. The mobile communication terminal device according to claim 1, wherein information specific to each battery pack is accumulated and collated via a power line.   3. The mobile communication terminal apparatus according to claim 1, wherein information specific to each battery pack is collated through a power line in accordance with a charge voltage level of the battery pack. A battery pack serving as a power supply source for a communication terminal device,
The battery pack is constructed to be detachable from the communication terminal device,
The battery pack is
Detection of attachment / detachment to the communication terminal device is performed at a temperature detection terminal, and when there is no output voltage when electrically connected to the communication terminal device via a power line, initial charging is performed, and the communication terminal When an arbitrary signal generated by the communication terminal device is input via the power line, the input arbitrary signal and the battery pack specific The battery pack further comprises means for generating a battery signal unique to the battery pack by combining the identification signal and outputting the generated battery signal to the communication terminal device via the power line.   The battery pack according to claim 4, wherein the communication terminal device storing information unique to each battery pack is collated through a power line.   6. The battery pack according to claim 4, wherein information specific to each battery pack is collated from the communication terminal device via a power line in accordance with a charging voltage level of the battery pack.

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