JP2000349873A - Portable terminal device with battery deficiency decision function and method for deciding battery deficiency - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately grasp the performance degradation, etc., of a used battery and to notify a user of the performance degradation, etc., by deciding and notifying that the performance degradation or deficiency of the battery exist when a power consumption quantity estimated from the stored capacity of the battery is compared with a calculated power consumption quantity and the difference between both of them is large. SOLUTION: The battery residual capacity Cr of a battery 14 corresponding to a monitored discharge voltage value is decided, and an estimated total consumption current Pe(=battery nominal capacity Cn - battery residual capacity Cr) being a value obtained by subtracting the capacity Cr from the capacity Cn is calculated. A portable terminal device having a battery defect decision function monitors consumption current difference ΔP(=estimated total consumption current Pe - real total consumption current Pa) being the difference between the current Pa and the current Pe at that point of time, when the difference ΔP surpasses a prescribed set value, the battery 14 is decided as performance degradation or defect, and the performance degradation or the defect is notified by the ringing of an alarm ringing part 22 or the display of an alarm displaying part 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for judging a malfunction of a battery for supplying operating power to a portable terminal device, and more particularly to a technique for accurately grasping the performance deterioration or malfunction of a used battery and using a reduction in the duration of the battery. Not only rely on the user's feelings, but also reliably notify the user, thereby preventing the user from not being able to use it when he wants to use it without noticing the decrease in battery life. The present invention relates to a portable terminal device with a battery malfunction determination function and a battery malfunction determination method.

[0002]

2. Description of the Related Art Conventionally, a portable terminal device operated by a battery detects a decrease in the remaining amount of the battery as a decrease in operating voltage, and notifies the user of an alarm when the voltage falls below a certain set voltage. Or a function of updating the display of the remaining amount of the battery every time the set voltage elapses.

[0003] As such a prior art, for example, there is one described in Japanese Patent Application Laid-Open No. Hei 10-31833 (first prior art). That is, in the first conventional technique, the battery remaining capacity sound notification device uses a predetermined value indicating the amount of current when the battery is fully charged and a predetermined value indicating the amount of current consumption when talking and in standby mode. The purpose of the present invention is to calculate the capacity and the talkable time, and to notify the talkable time by voice, and to report the remaining capacity of the battery, which is a rechargeable secondary battery mounted as a power source in a mobile phone or the like, by voice. And a device capable of communicating with the remaining battery power detected by the remaining battery power detection device based on a predetermined amount of current required during a call. A battery calculating unit for calculating the time, and a voice notifying unit for notifying by voice the communication available time calculated by the calculating unit. From a predetermined value indicating the current amount, a remaining battery capacity sound reporting device for detecting a remaining capacity of the battery by subtracting a predetermined value indicating the amount of current consumed by the call and waiting. According to such a battery remaining capacity sound notification device, a specific talk time is calculated based on the remaining battery capacity based on the predetermined amount of current required during a call, and the sound is notified by voice, so that a call is possible. It is possible to know the remaining time concretely, use the battery power effectively, and use the user based on the displayed remaining capacity level, such as when the remaining battery level is displayed. It is no longer necessary to predict the possible call time, and it is also possible to check the possible call time even in situations where the display of the telephone cannot be visually recognized, such as during a call, and in particular, Even free people can easily know the available time. Further, since the remaining capacity of the battery is detected by subtracting a predetermined value indicating the amount of current consumed during a call or a standby from the predetermined value indicating the amount of current when the battery is fully charged, the remaining capacity of the battery is detected. Since it is not necessary to provide a special circuit or the like, the cost can be reduced, and the remaining capacity of the battery can be detected without performing complicated processing, thereby reducing the processing load on the control unit. The effect of being able to do so is disclosed.

Another conventional technique is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 10-93467 (second conventional technique). That is, the second prior art aims to provide a portable wireless device that prevents variation between individuals in a low-voltage alarm, and a power amplifying unit that amplifies a radio frequency signal; An antenna for transmitting the power, a power amplifier and a switch connected between the antennas, a gain controller for controlling the radio frequency signal to be transmitted to a predetermined constant power, and a transmission power value of the power amplifier. A conversion unit for converting the voltage into a voltage corresponding to the value, a memory storing a predetermined comparison voltage, and a comparison unit for comparing the voltage with the comparison voltage, and the switch is a three-point switch; A movable contact is connected to one of a first contact connected to the antenna and a second contact for setting a comparison voltage, and further, the converting means is adapted to respond to the transmission power value. A directional coupler that extracts a constant power, and a detector that detects a voltage according to the power from the directional coupler, and a conversion unit that converts the voltage into a DC voltage corresponding to the transmission power from the power amplifier. Means for storing the power supply voltage when the transmission power becomes a predetermined power as a comparison voltage, and means for comparing the DC voltage with the comparison voltage and generating an alarm when the DC voltage is equal to or less than the comparison voltage. Portable wireless device. In such a portable wireless device, a set voltage such as a detector output or a battery voltage for a certain transmission power is individually stored in a memory, and a warning is issued to a user using the stored set voltage. There is disclosed an effect that transmission power individual differences in a portable wireless device can be eliminated and communication quality can be made uniform and reliability can be improved.

[0005] As another conventional technique, for example, there is one described in Japanese Patent No. 2588640 (third conventional technique). That is, the third prior art includes a battery capacity detecting unit that detects a remaining capacity of a battery in a mobile wireless device that is powered by a battery and communicates with a wireless communication device of a wireless base station;
When the remaining capacity detected by the battery capacity detection means becomes equal to or less than a predetermined value, control means for controlling to be in a press-to-talk mode;
Notifying means for notifying the user that the talk mode has been entered, and when the mobile radio device is in the press-to-talk mode, do not transmit to the radio communication device of the radio base station except during transmission. Transmission control means for controlling the
The battery capacity detecting means is for detecting the remaining capacity of the battery by monitoring the voltage of the battery, and the notifying means comprises sound emitting means for notifying by sound when the press-to-talk mode is set, The notifying means is a mobile wireless device having a display unit for displaying that the mode is the press-to-talk mode during the press-to-talk mode. According to such a mobile radio, when the battery of the mobile radio approaches the end of discharging, a warning is given to the user of the mobile radio by voice or the like, and then the press-to-talk system is used. Even in the state, the battery can be saved while not transmitting (when the send button is not pressed), the battery life can be prolonged, and the number of times of battery replacement can be reduced and used. There is disclosed an effect that the usability of the user can be improved.

[0006]

However, the prior art has the following problems. The first problem is that even if not all of the storage capacity that the battery originally has is available due to the performance degradation or malfunction of the battery caused by a phenomenon known as the memory effect, etc. Is difficult to distinguish from a decrease in the remaining battery power due to normal use. The second problem is that although the user may intuitively feel that the duration of the battery has been shortened, he or she tends to be illusioned that there is a difference in usage conditions and the like. It is difficult to do it in a timely manner, and as a result, not only the features of the original portable terminal device, such as use in places where there is no primary power source such as when going out, are not exhibited, but also the possibility of unexpected trouble such as sudden battery exhaustion. There is that.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and an object of the present invention is to accurately grasp the performance deterioration or malfunction of a used battery and to reduce the duration of the battery by the user's feeling. Battery, so that the user can be notified without fail, and as a result, the user can be prevented from becoming unable to use it when he / she wants to use it without noticing the decrease in battery life. It is to provide a portable terminal device with a failure determination function and a battery failure determination method.

[0008]

SUMMARY OF THE INVENTION The gist of the present invention is to accurately grasp the performance deterioration or malfunction of a battery to be used, and to use the battery not to rely on the sense of the user but to reduce the duration of the battery. A portable terminal device having a battery malfunction determination function capable of reliably notifying a user of the battery power, comprising: means for calculating the power consumption of a battery used as a driving power source inside the device; and the battery at the time of calculating the power consumption of the battery. Means for predicting power consumption from the storage capacity of the battery determined based on at least the discharge voltage of the battery, and comparing the calculated power consumption with the power consumption predicted from the storage capacity of the battery and comparing the two. Means for determining that the performance of the battery is degraded or defective when the difference is large;
There is provided a portable terminal device with a battery failure determination function, characterized in that the portable terminal device has means for performing notification to the user in accordance with the determination of the performance degradation or the failure of the battery. The gist of the invention described in claim 2 is that the portable device with a battery failure determination function according to claim 1, further comprising a battery type identification unit that automatically identifies a battery type when the battery is mounted on the device. It resides in the terminal device. According to a third aspect of the present invention, there is provided a portable terminal device with a battery failure determination function according to the first aspect, further comprising a battery capacity storage unit for storing a battery capacity for each battery type. The gist of the invention described in claim 4 is that the portable terminal with a battery malfunction determination function according to any one of claims 1 to 3, further comprising a battery voltage detection unit that measures a voltage of the battery. Exists in the device. The gist of the invention according to claim 5 is that the battery information at the time based on the voltage information measured by the battery voltage detection unit and the battery capacity information corresponding to the type of the attached battery reported from the battery capacity storage unit. The portable terminal device with a battery malfunction determination function according to claim 3 or 4, further comprising a remaining capacity conversion / expected total current consumption calculation unit for determining the remaining battery capacity. Claim 6
The gist of the invention described in claim 1, further comprising a current consumption detection unit that measures an instantaneous value of current consumption supplied from the battery to each unit of the device. 6. The battery according to claim 1, further comprising: A portable terminal device with a failure determination function. The gist of the invention according to claim 7 is that the spontaneous discharge current reduced by spontaneous discharge of the battery is integrated into an integrated value obtained by time-integrating the instantaneous value of the current consumption measured by the current consumption detection unit. The portable terminal device with a battery malfunction determination function according to claim 6, further comprising a total consumption current calculation unit that calculates a total consumption current amount from a point in time when the battery is completely charged by adding a value. The gist of the invention according to claim 8 is that the expected total current consumption provided by the remaining capacity conversion / estimated total current consumption calculation unit is compared with the actual total current consumption provided by the total consumption current calculation unit. The portable terminal device with a battery failure determination function according to claim 5, further comprising a battery failure determination unit that determines that the performance of the battery has deteriorated or has a failure. The gist of the invention described in claim 9 is to have an alarm sounding unit that notifies the user of the occurrence of the malfunction of the battery or the state of the malfunction by a sound based on the determination by the battery malfunction determination unit. A portable terminal device with a battery malfunction determination function according to claim 8. Claim 1
The gist of the invention described in claim 0 is characterized in that it has an alarm display unit for notifying a user of the occurrence or the state of the failure of the battery based on the determination by the battery failure determination unit. 8. The portable terminal device with a battery malfunction determination function according to item 8. The gist of the invention described in claim 11 is that a battery failure that can accurately grasp performance deterioration or a malfunction of a used battery and reliably notify the user of the decrease in the duration of the battery without relying on the user's feeling. A method for calculating the power consumption of a battery used as a driving power source inside the device, and the battery determined based on at least the discharge voltage of the battery at the time of calculating the power consumption of the battery. Estimating the power consumption from the storage capacity of the battery, and comparing the power consumption predicted from the storage capacity of the battery with the calculated power consumption. A battery comprising: a step of determining that there is a battery; and a step of notifying a user of the performance of the battery in accordance with the determination of deterioration or malfunction. It resides in the condition determination method. The gist of the present invention resides in a battery failure judging method according to claim 11, further comprising a battery type identification step of automatically identifying a battery type when the battery is mounted on an apparatus. . The gist of the invention according to claim 13 resides in a battery failure determination method according to claim 11, further comprising a battery capacity storing step of storing a battery capacity for each battery type. The gist of the invention described in claim 14 includes a battery voltage detecting step of measuring a voltage of the battery.
The battery failure determination method according to any one of Items 1 to 13. The gist of the invention described in claim 15 is:
Remaining capacity conversion / expected total to determine the remaining battery capacity at that time based on the voltage information measured in the battery voltage detecting step and the battery capacity information corresponding to the type of the attached battery reported from the battery capacity storing step. The battery malfunction judging method according to claim 13 or 14, further comprising a current consumption calculating step. The gist of the invention described in claim 16 includes a current consumption detecting step of measuring an instantaneous value of current consumption supplied from the battery to each unit of the device.
The battery failure determination method according to any one of the above items. The gist of the invention according to claim 17 is that an integrated value obtained by time-integrating the instantaneous value of the consumed current measured in the consumed current detecting step is a part of the natural discharge current reduced by the natural discharge of the battery. 17. The battery failure judging method according to claim 16, further comprising a total consumption current calculation step of calculating a total consumption current amount from the time when the battery is completely charged by adding a value. The gist of the invention described in claim 18 is that the expected total current consumption provided from the remaining capacity conversion / estimated total current consumption calculation step is compared with the actual total current consumption provided from the total consumption current calculation step. The battery failure determination method according to claim 15, further comprising a battery failure determination step of determining that the performance of the battery is deteriorated or defective. Claim 1
The gist of the invention described in 9 is characterized in that it has an alarm sounding step of notifying the user of the occurrence or malfunction of the battery based on the judgment in the battery malfunction judging step. A battery malfunction determination method according to claim 18 is provided. The gist of the invention according to claim 20 is characterized in that it has an alarm display step of notifying the user of the occurrence or failure of the battery by displaying the failure based on the determination in the battery failure determination step. A battery failure determination method according to claim 18. The gist of the invention described in claim 21 is that the discharge voltage of the battery is measured in the battery voltage detecting step, and the result is converted to the battery remaining capacity in the remaining capacity conversion / estimated total current consumption calculation step. And the battery type identification step recognizes the type, the battery capacity storage step of providing the nominal battery capacity of the type is recorded to the remaining capacity conversion and expected total current consumption calculation step, Calculating the expected total current consumption from the difference between the battery remaining capacity calculated from the battery voltage and the battery nominal capacity in the remaining capacity conversion / estimated total current consumption calculation step; 2. The method according to claim 1, further comprising the step of maintaining the latest estimated total current consumption in the current calculation step.
8. A method for determining a battery failure according to any one of 8. Further, the gist of the invention according to claim 22 is that, in order to calculate the amount of current actually consumed, the start time is the time when the charging of the battery is completed, and the timer of the total consumed current calculation step is set to time = 0. Setting the total current consumed by the battery current determining method in the current consumption detecting step, and providing an instantaneous value of the current consumption to the total current consumption calculating step; The process
A step of always maintaining the latest value as a sum of a value obtained by multiplying an integral value of the instantaneous value of the consumed current within a predetermined time, a spontaneous discharge current of the battery itself, and the predetermined time, as the actual total consumed current. A battery failure determination method according to claim 21. The gist of the invention according to claim 23 is that the battery malfunction determination step is provided from the latest estimated total current consumption and the total current consumption calculation step provided from the remaining capacity conversion / estimated total current consumption calculation step. Calculating a difference in current consumption from the actual total current consumption, and when the difference in current consumption exceeds a preset value, the battery has a required performance due to performance degradation or malfunction of the battery. A step of judging that the battery is not satisfied, and a step of issuing a notification instruction to the alarm sounding step and / or the alarm displaying step in order for the battery malfunction judging step to inform a user of performance deterioration or malfunction of the battery. 23. A battery failure determination method according to claim 22, wherein:

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of each of the embodiments described below are that the power consumption of a battery used as a driving power source is calculated inside the device and the power consumption determined at that time from the discharge voltage of the battery and the like. By comparing the power consumption predicted from the storage capacity of the battery with the calculated power consumption, when the difference between the two is large, it is determined that the performance of the battery is deteriorated or defective, and a function for notifying the user is provided. Therefore, it becomes possible to accurately grasp the performance deterioration or the malfunction of the battery used in the portable terminal device with the battery malfunction determination function, and instead of relying on the user's feeling to reduce the duration of the battery as in the related art. The user can be notified without any notice, and as a result, the user can not use it when he wants to use it without noticing the decrease in battery life It is to be able to prevent trouble in advance. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
It is a functional block diagram for explaining the portable terminal device with a battery malfunction determination function according to the embodiment. In FIG. 1, 10 is a wireless receiving unit, 11 is a wireless transmitting unit, 12 is a control unit, 13 is an operation unit, 14 is a battery, 15 is a battery type identification unit, 16 is a battery capacity storage unit, and 17 is a battery voltage detection unit. Reference numeral 18 denotes a remaining capacity conversion / estimated total current consumption calculation unit, 19 denotes a current consumption detection unit, 20 denotes a total current consumption calculation unit, 21 denotes a battery malfunction determination unit, 22 denotes an alarm sounding unit, and 23 denotes an alarm display unit. ing. Note that Cn
Is the nominal battery capacity, Cr is the remaining battery capacity, i is the current consumption, i (t) is the instantaneous value of the current consumption, Pa is the actual total current consumption, and Pe is the expected total current consumption (= the battery nominal capacity Cn
−Battery remaining capacity Cr) and ΔP mean a difference in current consumption (= expected total current consumption Pe−actual total current consumption Pa), each of which will be described later with reference to FIG.

Referring to FIG. 1, a portable terminal device with a battery malfunction determining function according to the present embodiment is a portable telephone terminal, and includes a radio receiving unit 10, a radio transmitting unit 11, a control unit 12, In addition to the operation unit 13 and the battery 14, a battery type identification unit 15 for automatically identifying a battery type such as a capacity when the battery 14 is attached to the portable terminal device with a battery malfunction determination function, and a battery capacity for each battery type A battery capacity storage unit 16 for storing
Battery voltage detector 17 for measuring the voltage of battery 14
And a remaining capacity conversion for determining the remaining battery capacity Cr at that time based on the voltage information measured by the battery voltage detecting section 17 and the battery capacity information corresponding to the type of the attached battery reported from the battery capacity storage section 16. An expected total current consumption calculation unit 18, a current consumption detection unit 19 that measures an instantaneous value i (t) of a current consumption i supplied from the battery 14 to each unit of the device, and a current consumption measured by the current consumption detection unit 19. The time when the battery 14 is completely charged by adding the value of the spontaneous discharge current I (dis) reduced by the spontaneous discharge of the battery 14 to the value (integrated value) obtained by time-integrating the instantaneous value i (t) of i. Total current consumption calculating unit 20 for calculating the total current consumption from the storage unit, and the remaining capacity conversion / expected total current consumption calculating unit 1
A battery malfunction determination unit 21 that compares the expected total current consumption Pe provided by the power supply unit 8 with the actual total current consumption Pa provided by the total consumption current calculation unit 20 to determine performance degradation or malfunction of the battery 14; An alarm sounding section 22 or an alarm display section 23 is provided for notifying the user of the occurrence of the malfunction of the battery 14 or the state of the malfunction based on the determination by the section 21. The wireless receiving unit 10, the wireless transmitting unit 11, the control unit 12, the operating unit 13, and the battery 14
Is a main part used in a conventional portable telephone terminal of a portable terminal device with a battery malfunction determination function,
The description is omitted.

In general, portable terminals differ in current consumption i mainly due to various conditions such as a call state, a standby state, a key operation state, a spontaneous discharge or an operation state. In the portable terminal device with a battery malfunction determination function according to the present embodiment, the sum of the current consumption i in each state multiplied by the duration of each state, that is, the instantaneous value i of the current consumption i
The value obtained by integrating (t) with time is held as the actual total current consumption Pa.

The portable terminal device with the battery malfunction determination function having the above-described configuration constantly monitors the discharge voltage value of the battery 14 and determines the remaining battery capacity Cr of the battery 14 corresponding to the monitored discharge voltage value. It has a determination function, and calculates an expected total current consumption Pe (= battery nominal capacity Cn-battery remaining capacity Cr), which is a value obtained by subtracting battery remaining capacity Cr from battery nominal capacity Cn. The battery nominal capacity Cn varies depending on the charging completion state of the battery 14, but is estimated based on the battery voltage at the time of completion of charging.
In addition, the portable terminal device with the battery malfunction determination function has the actual total current consumption Pa and the expected total current consumption P at that time.
e, which is a difference from the current consumption e, is monitored, and the monitored current consumption difference ΔP (= expected total current consumption Pe-actual total current consumption Pa) is monitored. ) Exceeds a predetermined set value (that is, current consumption difference ΔP (= expected total current consumption Pe−actual total current consumption P)
a)> When the set value is reached), it is determined that the performance of the battery 14 is deteriorated or defective, and the user is notified by sounding the alarm sounding unit 22 or displaying it on the alarm display unit 23.

FIG. 2 is a flow chart for explaining the battery failure determination method (operation of the portable terminal device with battery failure determination function) according to the first embodiment of the present invention. The operation of the portable terminal device with a battery malfunction determination function using the present invention having the configuration of FIG. 1 will be described with reference to the flowchart of FIG. In FIG. 2, Cn is the nominal battery capacity, Cr is the remaining battery capacity, i is the current consumption,
i (t) is the instantaneous value of the current consumption, I (dis) is the spontaneous discharge current, Pa is the actual total current consumption, Pe is the expected total current consumption (= battery nominal capacity Cn−battery remaining capacity Cr),
ΔP indicates a difference in current consumption (= expected total current consumption Pe−actual total current consumption Pa). The battery malfunction determination method according to the present embodiment represents the estimated total current consumption Pe (= battery nominal capacity Cn−battery remaining capacity Cr) and the amount of current actually consumed in order to determine performance degradation or malfunction of the battery 14. It has a function of calculating the actual total current consumption Pa.

First, step S in the flowchart of FIG.
A cycle of calculating the expected total current consumption Pe (= battery nominal capacity Cn−battery remaining capacity Cr) in 30 to step S32 will be described. Since the battery 14 can generally know the remaining battery capacity Cr from the discharge voltage, the battery voltage detecting unit 17 measures the discharge voltage of the battery 14 (step S30), and converts the result to the remaining capacity conversion / estimated total current consumption calculation. The conversion into the remaining battery capacity Cr is performed by the unit 18 (step S31). Subsequently, in consideration of a case where a plurality of battery types having different capacities are loaded in the portable terminal device with a battery malfunction determination function, the battery type identification unit 15 recognizes the type, and the battery capacity storage unit 16 records the type. The provided battery nominal capacity Cn of the corresponding type is supplied to the remaining capacity conversion / expected total current consumption calculation unit 18. Subsequently, the remaining capacity conversion / expected total current consumption calculation unit 18 calculates the expected total current consumption Pe (= battery nominal capacity Cn−battery remaining capacity) from the difference between the battery remaining capacity Cr calculated from the battery voltage and the battery nominal capacity Cn. Cr) is calculated (step S32). Step S above
The cycle from step 30 to step S32 is repeated at all times or at regular intervals, and the latest estimated total current consumption Pe (= battery nominal capacity Cn−battery remaining capacity Cr) is always stored in the remaining capacity conversion / estimated total current consumption calculation unit 18. Will be retained.

Next, a cycle for calculating the actual total current consumption Pa in steps S33 to S35 will be described. First, in order to calculate the amount of current actually consumed, the start time is set to the time when charging of the battery 14 is completed, and the timer of the total consumed current calculation unit 20 is set to time t = 0 (step S33). Subsequently, the current consumption detector 19 constantly measures the total current consumed by the portable terminal device with a battery malfunction determination function, and provides the instantaneous value i (t) of the current consumption i to the total current consumption calculator 20 (step). S34). Subsequently, the total consumed current calculation unit 20 calculates I (dis) as an integrated value of the instantaneous value i (t) of the consumed current i from time t = 0 to time t = T and the natural discharge current of the battery 14 itself. ) (Fixed value) multiplied by time T, and always keeps the latest value as the actual total current consumption Pa (step S35).

Next, the operation of determining whether the performance of the battery 14 has deteriorated or malfunctioning and issuing an alarm in steps S36 to S38 will be described. Battery malfunction determination unit 21
Is the latest expected total current consumption Pe (= battery nominal capacity Cn−battery remaining capacity Cr) provided by the remaining capacity conversion / expected total current consumption calculation section 18 and the total consumption current calculation section 20
Current consumption difference ΔP from actual total current consumption Pa provided by
(= Expected total current consumption Pe−actual total current consumption Pa) is calculated (step S36), and the current consumption difference ΔP (= expected total current consumption Pe−actual total current consumption Pa) is set to a preset value (setting). (Step S37: Yes)
In s), it is determined that the battery 14 does not satisfy the required performance due to performance degradation or malfunction of the battery 14.
At this time, the battery malfunction determination unit 21 informs the user of the performance deterioration or malfunction occurrence of the battery 14,
A notification instruction is issued to the alarm sound section 22 such as a buzzer or a speaker, and the alarm display section 23 such as a display or an LED (light emitting diode) (step S38). On the other hand, the consumption current difference ΔP (= expected total consumption current Pe−actual total consumption current P
If a) is equal to or smaller than a preset value (set value) (No in step S37), the process jumps to step S36.

As described above, according to the first embodiment, it is possible to accurately ascertain the performance deterioration or malfunction of the battery 14 used in the portable terminal device with a battery malfunction determination function. Battery 1 like
4 can be reliably notified to the user instead of relying on the user's sense of the decrease in the duration. For this reason, it is possible to prevent a trouble that the user cannot use the battery when he / she wants to use it, without noticing the decrease in the battery duration time.

(Second Embodiment) The present invention is not limited to a portable telephone terminal, but uses a rechargeable secondary power supply such as a portable computer, a portable information terminal, a portable audio or visual device, and the like. The present invention can be applied to all portable terminals operating as the portable terminal 14.

It should be noted that the present invention is not limited to the above embodiments, and each embodiment can be appropriately modified within the scope of the technical idea of the present invention. Further, the number, position, shape, and the like of the constituent members are not limited to the above-described embodiment, and can be set to numbers, positions, shapes, and the like suitable for carrying out the present invention. In each drawing, the same components are denoted by the same reference numerals.

[0021]

Since the present invention is configured as described above, it is possible to accurately ascertain the performance deterioration or the problem of the battery used in the portable terminal device having the battery problem judging function. In this way, the user can be reliably notified of the decrease in the duration of the battery instead of relying on the user's feeling. For this reason, it is possible to prevent a trouble that the user cannot use the battery when he / she wants to use it, without noticing the decrease in the battery duration time.

[Brief description of the drawings]

FIG. 1 is a functional block diagram for explaining a portable terminal device with a battery malfunction determination function according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating a battery malfunction determination method (operation of a portable terminal device with a battery malfunction determination function) according to the first embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Wireless receiving part 11 ... Wireless transmitting part 12 ... Control part 13 ... Operation part 14 ... Battery 15 ... Battery type identification part 16 ... Battery capacity storage part 17 ... Battery voltage detecting part 18 ... Remaining capacity conversion / expected total current consumption calculation Unit 19: Current consumption detection unit 20: Total current consumption calculation unit 21: Battery malfunction determination unit 22: Alarm sounding unit 23: Alarm display unit Cn: Battery nominal capacity Cr: Battery remaining capacity i: Current consumption i (t) ... Instantaneous value of current consumption I (dis): Natural discharge current Pa: Actual total current consumption Pe: Expected total current consumption (= battery nominal capacity Cn-remaining battery capacity Cr) ΔP: Current consumption difference (= expected total current consumption Pe) -Actual total current consumption Pa)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04B 7/26 H04B 7/26 L 5K067 F term (Reference) 2G016 CA00 CB05 CB12 CB21 CB22 CC01 CC04 CC06 CC27 CC28 CE00 5C086 AA32 BA14 CA02 CA03 DA08 EA41 FA02 FA17 5G003 AA04 DA02 EA05 5K011 DA29 HA03 HA06 HA07 JA01 KA12 LA01 5K027 AA11 BB06 CC08 FF14 FF22 FF27 GG03 5K067 AA34 BB04 BB08 EE02 FF19 FF19 KK

Claims (23)

[Claims] 1. A portable terminal device with a battery malfunction determination function capable of accurately grasping the performance deterioration or malfunction of a used battery and reliably informing the user of the decrease in the duration of the battery instead of relying on the sense of the user. Means for calculating the power consumption of the battery used as the driving power source inside the device; and the storage capacity of the battery determined based on at least the discharge voltage of the battery at the time of calculation of the power consumption of the battery. Means for estimating the power consumption from the battery, and comparing the power consumption predicted from the storage capacity of the battery with the calculated power consumption. If the difference between the two is large, it is determined that the battery performance is deteriorated or defective. And a means for notifying the user of the performance of the battery in accordance with the determination of the deterioration or malfunction of the battery. The mobile terminal device with a constant function. 2. The portable terminal device with a battery malfunction determination function according to claim 1, further comprising a battery type identification unit for automatically identifying a battery type when the battery is mounted on the device. 3. The portable terminal device with a battery malfunction determination function according to claim 1, further comprising a battery capacity storage unit for storing a battery capacity for each battery type. 4. The portable terminal device with a battery malfunction judging function according to claim 1, further comprising a battery voltage detecting unit that measures a voltage of the battery. 5. A residual battery for determining the remaining battery capacity at that time based on the voltage information measured by the battery voltage detection section and the battery capacity information corresponding to the type of the attached battery reported from the battery capacity storage section. 4. A capacity conversion / estimated total current consumption calculation unit.
Or the portable terminal device with a battery malfunction determination function according to 4. 6. The battery malfunction judging function according to claim 1, further comprising a current consumption detecting unit that measures an instantaneous value of current consumption supplied from the battery to each unit of the apparatus. Mobile terminal device. 7. The battery according to claim 1, wherein a value of a spontaneous discharge current reduced by spontaneous discharge of the battery is added to an integrated value obtained by time-integrating an instantaneous value of the current consumption measured by the current consumption detection unit. 7. The portable terminal device with a battery malfunction determination function according to claim 6, further comprising a total consumption current calculation unit that calculates a total consumption current amount from a time when charging is completed. 8. The battery according to claim 1, wherein said estimated total current consumption provided by said remaining capacity conversion / estimated total current consumption calculation unit is compared with the actual total current consumption provided by said total current consumption calculation unit. The portable terminal device with a battery failure determination function according to claim 5, further comprising a battery failure determination unit that determines that the battery failure has occurred. 9. The apparatus according to claim 8, further comprising an alarm sounding section for notifying a user of the occurrence or malfunction of the battery based on the judgment by the battery malfunction judging section. A portable terminal device with a battery malfunction determination function as described in the above. 10. An alarm display unit according to claim 8, further comprising an alarm display unit for notifying a user of the occurrence or failure of the battery based on the determination by the battery failure determination unit. Portable terminal device with battery malfunction determination function. 11. A battery malfunction determination method capable of accurately grasping performance deterioration or malfunction of a battery used and notifying the user of the decrease in the duration of the battery without relying on the user's feeling. Calculating the power consumption of the battery used as the power supply inside the device; and calculating the power consumption from the storage capacity of the battery determined based on at least the discharge voltage of the battery at the time of calculating the power consumption of the battery. And a step of comparing the power consumption predicted from the storage capacity of the battery and the calculated power consumption, and determining that there is performance degradation or malfunction of the battery if the difference between the two is large, A battery failure determination method, comprising the step of providing a user with a notification in accordance with the determination of the performance deterioration or failure of the battery. 12. The battery failure judging method according to claim 11, further comprising a battery type identification step of automatically identifying a battery type when the battery is mounted on the device. 13. The method according to claim 11, further comprising a battery capacity storing step of storing a battery capacity for each battery type. 14. The battery failure judging method according to claim 11, further comprising a battery voltage detecting step of measuring a voltage of the battery. 15. A battery for determining a remaining battery capacity at that time based on the voltage information measured in the battery voltage detecting step and the battery capacity information corresponding to the type of the attached battery reported from the battery capacity storing step. The method according to claim 13 or 14, further comprising a capacity conversion / estimated total current consumption calculation step. 16. The battery failure judging method according to claim 11, further comprising a current consumption detecting step of measuring an instantaneous value of current consumption supplied from the battery to each unit of the apparatus. . 17. The battery according to claim 1, wherein a value of a spontaneous discharge current reduced by spontaneous discharge of the battery is added to an integrated value obtained by time-integrating an instantaneous value of the current consumption measured in the current consumption detection step. 17. The method according to claim 16, further comprising: calculating a total current consumption from a time when charging is completed. 18. Deterioration or malfunction of the battery by comparing expected total current consumption provided from the remaining capacity conversion / estimated total current consumption calculation step with actual total current consumption provided from the total consumption current calculation step. The battery malfunction determination method according to claim 15, further comprising a battery malfunction determination step of determining that the battery malfunction has occurred. 19. The apparatus according to claim 18, further comprising an alarm sounding step of notifying a user of the occurrence or malfunction of the battery based on the determination in the battery malfunction determination step. The battery malfunction determination method described in the above. 20. The apparatus according to claim 18, further comprising an alarm display step of notifying a user of the occurrence or failure of the battery based on the determination in the battery failure determination step. Battery failure determination method. 21. A step of measuring a discharge voltage of the battery in the battery voltage detecting step, and converting the result into the battery remaining capacity in the remaining capacity conversion / estimated total current consumption calculation step; An identification step of recognizing the type and providing the nominal capacity of the battery of the type in which the battery capacity storage step is recorded to the remaining capacity conversion / estimated total current consumption calculation step; A current consumption calculating step of calculating the expected total current consumption from a difference between the battery remaining capacity calculated from the battery voltage and the battery nominal capacity; and The method according to any one of claims 16 to 18, further comprising a step of maintaining the estimated total current consumption. Law. 22. To calculate the amount of current actually consumed, a start time is defined as a time when the charging of the battery is completed,
Setting the timer of the total consumption current calculation step to time = 0; and the current consumption detection step always measures the total current consumed by the battery failure determination method, and sets the instantaneous value of the consumption current to the total consumption current. Providing the calculation step, and the total consumption current calculation step calculates a total sum of an integral value of the instantaneous value of the consumption current within a predetermined time, a natural discharge current of the battery itself, and a value obtained by multiplying the predetermined time. 22. The battery failure determination method according to claim 21, further comprising a step of always holding the latest value as the actual total current consumption. 23. The battery failure determination step includes the latest expected total current consumption provided by the remaining capacity conversion / estimated total current consumption calculation step and the actual total current consumption provided by the total consumption current calculation step. Calculating the current consumption difference of the battery, and, when the current consumption difference exceeds a preset value, determining that the battery does not satisfy required performance due to performance degradation or malfunction of the battery. And a step of issuing a notification instruction to the alarm sounding step and / or the alarm displaying step to notify a user of the performance deterioration or the occurrence of a problem of the battery to the user. Item 23. The battery malfunction judging method according to Item 22.