JP2014131449A - Power consumption control device, portable terminal, and power consumption control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a portable terminal from being at a certain temperature or higher for longer than a limit time.SOLUTION: In a power consumption control device (1), a weighting value integration part (13) integrates a weighting value that a weighting value selection part (12) selects according to secondary battery temperature information on a portable terminal (10) that a temperature information acquisition part (11) acquires, and a power consumption function control part (15) controls functions associated with power consumption when a time determination part (14) determines that the integrated value exceeds a threshold and a limit time is exceeded.

Description

  The present invention relates to a power consumption control device, a portable terminal, and a power consumption control program, and more particularly to a power consumption control device built in an electronic device such as a portable terminal.

  Some electronic devices are supplied with electric power by a secondary battery built in the electronic device. In particular, secondary batteries are often built into electronic devices that are carried by users, such as portable terminals.

  However, during the operation of such an electronic device, the secondary battery built in the electronic device may become hot. For example, in a portable terminal, when a control unit that performs information processing becomes high temperature, a secondary battery located in the vicinity thereof also becomes high temperature.

  In addition, a charging current supplied to the secondary battery from a charge control device that charges and / or discharges the secondary battery may increase the temperature of the secondary battery.

  Thus, the high temperature of the secondary battery may cause battery deterioration in the secondary battery or a failure in an electronic device in which the secondary battery is built. is there. In addition, it is not preferable that the time during which the electronic device is at a temperature higher than the temperature that is normally assumed to be used for a long time is caused because various problems are caused.

  Therefore, conventionally, an invention for controlling the operation of the electronic device or the charging control device based on the measured temperature of the secondary battery, the electronic device, or the charging control device has been disclosed.

  For example, Patent Documents 1 to 3 disclose techniques for stopping charging a secondary battery, reducing a charging voltage value, or stopping a processing operation executed in the apparatus when the measured temperature is equal to or higher than a predetermined value. Have been described.

  In relation to the above technique, Patent Document 4 describes a portable electronic device that includes two temperature sensors in order to more accurately measure the temperature of the secondary battery or the electronic device itself.

Japanese Patent Laid-Open No. 2-2446739 (published on October 2, 1990) JP 2007-43422 A (published February 15, 2007) JP 2012-115080 A (released on June 14, 2012) JP 2010-25754 A (published February 4, 2010)

  However, the conventional technology as described above is a charge control circuit that stops the charging of the secondary battery when the temperature increase rate of the secondary battery is equal to or higher than a reference value and equal to or longer than a predetermined time. If it lasts for a long time, the charge control circuit will not be judged. Therefore, the user may be exposed to a certain temperature for a long time and feel uncomfortable.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to prevent the time when the portable terminal is at a certain temperature or more from exceeding the time limit.

  In order to solve the above-described problem, a power consumption control device according to one aspect of the present invention includes a temperature information acquisition unit that acquires secondary battery temperature information indicating a temperature of a secondary battery built in a mobile terminal, and The weight value selection means for selecting a weight value from the secondary battery temperature information acquired by the temperature information acquisition means, the weight value integration means for integrating the weight value selected by the weight value selection means, and the temperature of the portable terminal A time determination means for determining whether or not a duration time that continues at a temperature equal to or higher than a predetermined time exceeds a time limit that is a time until the weighted value accumulated by the weighted value accumulating means reaches a predetermined threshold; A power consumption function control means for controlling a function related to power consumption of the mobile terminal when the weight value selection means determines that the duration exceeds the time limit; To have.

  According to one aspect of the present invention, the temperature of the portable terminal including the power consumption control device according to the present invention is limited for a time that is a certain temperature or more, and the user is in contact with an object having a certain temperature or more for a long time. It has the effect of preventing the user from feeling uncomfortable.

It is a block diagram in a portable terminal which concerns on the power consumption control apparatus of this invention. It is a flowchart figure of operation | movement which concerns on the power consumption control apparatus of this invention. FIG. 3 is a subroutine diagram of FIG. 2 according to the power consumption control device of the present invention. 4 is a correspondence table between secondary battery temperatures and weight values according to the weight value table of the present invention. 6 is a correspondence table between peripheral device temperatures and secondary battery temperatures according to the temperature correlation table of the present invention.

[1. About device configuration)
First, a schematic configuration of a mobile terminal 10 according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing a schematic configuration of the entire mobile terminal 10. As shown in the figure, the mobile terminal 10 includes a secondary battery 2, a secondary battery temperature sensor 3, a device provided around the secondary battery 2 (hereinafter simply referred to as “peripheral device 4”), A peripheral device temperature sensor 5, a storage unit 6, a power consumption control device 1, a power consumption function control unit 15, and an event generation unit 7 are provided.

  A secondary battery is also called a storage battery or a rechargeable battery, and is mainly built in a portable terminal. Examples of the secondary battery 2 include those using lithium ions or lithium polymers. The secondary battery temperature sensor 3 detects the temperature of the secondary battery 2 built in the mobile terminal 10 as the secondary battery temperature. The secondary battery temperature sensor 3 is composed of, for example, a thermistor.

  The peripheral device 4 of the secondary battery 2 is a device that is provided around the secondary battery 2 built in the mobile terminal 10 and easily changes in the temperature of the secondary battery 2. Examples of such peripheral devices include a CPU and a GPS (Global Positioning System) sensor. The peripheral device temperature sensor 5 detects the temperature of the peripheral device 4 as the peripheral device temperature, and is composed of, for example, a thermistor.

  The storage unit 6 is realized by an HDD (Hard Disk Drive) or a flash memory, and includes a temperature correlation table 6a and a weight value table 6b. Details of these two tables will be described later.

  In addition, the power consumption control device 1 includes a temperature information acquisition unit 11, a weight value selection unit 12, a weight value integration unit 13, a time determination unit 14, and a power consumption function control unit 15.

  The temperature information acquisition unit 11 acquires secondary battery temperature information indicating the temperature of the secondary battery 2 built in the mobile terminal 10. Details of the embodiment for acquiring secondary battery temperature information will be described later in Embodiments 1 and 2.

  The weight value selection unit 12 selects an appropriate weight value obtained by an experiment or the like with reference to a weight value table for the secondary battery temperature information acquired by the temperature information acquisition unit 11. The weighting value integration unit 13 integrates the weighting values selected by the weighting value selection unit 12.

  The time determination unit 14 determines whether or not the integration result of the weight values integrated by the weight value integration unit 13 has exceeded a time limit that is a time until reaching a predetermined threshold, and notifies the power consumption function control unit 15 of the result. . That is, when the weight value integrated by the weight value integration unit 13 exceeds the threshold value, the power consumption function control unit 15 is notified that the weight value has exceeded the threshold value. Furthermore, in other words, when the time when the temperature of the secondary battery 2 is a certain temperature or more, that is, when the time when the portable terminal 10 is a certain temperature exceeds the time limit (hereinafter, the high temperature time limit is exceeded). ), And notifies the power consumption function control unit 15 of the determination result.

  The power consumption function control unit 15 includes a charge control unit 151 and a CPU clock change unit 152. In addition, the power consumption function control unit 15 includes a communication control unit 153 and an event factor control unit 154 in the third embodiment. The communication control unit 153 and the event factor control unit 154 will be described later in the third embodiment.

  The charging control unit 151 controls charging based on the determination result notified by the time determination unit 14. Specifically, when the determination result that the high temperature limit time has been exceeded is notified from the time determination unit 14, the charging is stopped and the power consumption of the mobile terminal 10 is reduced.

  The CPU clock changing unit 152 changes the operating frequency of the CPU included in the mobile terminal 10 based on the determination result notified by the time determining unit 14. Specifically, when the determination result of exceeding the high temperature limit time is notified from the time determination unit 14, the operating frequency is decreased and the power consumption of the mobile terminal 10 is decreased. The event generation unit 7 will be described later in the third embodiment.

  In the portable terminal 10 having the above-described configuration, when the power consumption control device 1 exceeds the high temperature limit time, the function that consumes power is controlled to achieve a temperature below a certain level. As a result, there is an effect that the user who owns the mobile terminal 10 does not feel discomfort associated with touching a high-temperature object for a long time. Hereinafter, while describing the point where the said effect is show | played, three embodiment is also demonstrated.

  As described above, in the third embodiment, the power consumption function control unit 15 includes the communication control unit 153 and the event factor control unit 154, and the event generation unit 7 is mounted.

[2. About common flow)
First, a common flow of processing executed by the mobile terminal 10 having the configuration shown in FIG. 1 will be described with reference to FIG.

  First, the temperature information acquisition unit 11 acquires the secondary battery temperature directly detected by the secondary battery temperature sensor 3 (step 1. Hereinafter, “step” is simply referred to as “S”). On the other hand, the temperature information acquisition unit 11 acquires peripheral device temperature information detected by the peripheral device temperature sensor 5 (S2). Then, the temperature information acquisition unit 11 determines secondary battery temperature information using at least one of the secondary battery temperature acquired in S1 and the peripheral device temperature information acquired in S2 (S3).

  In [Embodiment 1] described later, the secondary battery temperature (secondary battery temperature α) acquired in S1 is determined as secondary battery temperature information. In [Embodiment 2] to be described later, the peripheral device temperature information acquired in S2 is converted by the temperature correlation table 6a to acquire the secondary battery temperature (secondary battery temperature β), and the secondary battery temperature α and The higher one of the secondary battery temperatures β is determined as the secondary battery temperature information. Details of the first and second embodiments will be described later in the description of the flowchart of FIG.

  Then, after the secondary battery temperature information is determined in S3, the weight value selection unit 12 selects a weight value corresponding to the secondary battery temperature information determined in S3 with reference to the weight value table 6b. (S4).

  Here, the setting of the weight value table 6b built in the mobile terminal 10 having the configuration shown in FIG. 1 will be described in detail with reference to FIG. The weighting value table 6b is a table in which weighting values are set so as to correspond to the secondary battery temperature information, and appropriate weighting values obtained through experiments or the like are stored in advance. The weighting value is a value that is inversely proportional to the time until the power consumption function control unit 15 suppresses power consumption.

  Ergonomic data for determining the temperature limit value of the hot surface is described in BS EN563 1994. If the surface material of the device is plastic, the surface temperature is 43 to avoid burns due to continuous contact with the device. The time at which the temperature is 0 C is required to be less than 8 hours, and the time at which the surface temperature is 48 ° C. is required to be less than 10 minutes. In order not to make the user feel uncomfortable, it is necessary to satisfy at least the above-mentioned standard, and the user can consider that the temperature of the secondary battery generally lower than the surface temperature of the mobile terminal 10 is the surface temperature and satisfy the above-mentioned standard. You can meet the conditions that do not make you feel uncomfortable. For this purpose, as shown in FIG. 4, a weighting value (20) is set for the secondary battery (43 ° C.), and 1400 is set for the secondary battery (48 ° C.). On the other hand, the higher the surface temperature of the contacting device, the shorter the time until the possibility of burns. Therefore, in the weighting value table 6b shown in FIG. 4, the weighting value is set to increase as the secondary battery temperature becomes higher. In combination with the above-described setting of the weighting value, the threshold value described later can be set to an appropriate value to satisfy the above criteria.

  The weight value integration unit 13 integrates the weight values selected by the weight value selection unit 12 in S4 (S5), and the time determination unit 14 determines the weight values integrated by the weight value integration unit 13 in advance. When the time determination unit determines that the time that is equal to or higher than the threshold, that is, the time that is equal to or higher than a certain temperature has exceeded the time limit (high temperature time limit exceeded) (S6 YES), the power consumption function control unit 15 performs power consumption. The function is controlled to reduce power consumption (S8). If it is determined that the high temperature limit time has not been reached (No in S6), the power consumption control device 1 waits (S7) for a certain time (10 seconds in this embodiment), and the initial steps of the flowchart of FIG. Repeat from. That is, the power consumption control device 1 executes the processes of S1 and S2 again. Thereby, the weight value is integrated by the weight value integration unit 13 at regular intervals until the high temperature limit time is exceeded.

  For example, when the temperature information acquisition unit 11 determines 43 ° C. as the secondary battery temperature information, the weight value selection unit 12 refers to the weight value table 6 b and the secondary battery temperature information acquired by the temperature information acquisition unit 11. A weight value (20) corresponding to (43 ° C.) is selected. The weight value accumulation unit 13 accumulates the weight value (20) selected by the weight value selection unit 12.

  If the secondary battery temperature information (43 ° C.) from the temperature information acquisition unit 11 is continuously notified to the weighting value selection unit 12, the weighting integration unit 13 integrates the weighting value (20) with a 10-second counter. I will do it. When the weighting value accumulated by the weighting value accumulating unit 13 is equal to or higher than the weighting value threshold (54000), the time determining unit 14 notifies the power consumption function control unit 15 of the determination result that the high temperature limit time has been exceeded. Based on the result, the power consumption function control unit 15 controls the power consumption function to reduce heat generation. That is, the heat generation of the mobile terminal 1 decreases in 7 hours and 30 minutes after the secondary battery temperature information from the temperature information acquisition unit 11 reaches 43 ° C.

  If the secondary battery temperature information (50 ° C.) from the temperature information acquisition unit 11 is continuously notified to the weight value selection unit 12, the weight integration unit 13 uses a 10-second counter to calculate the weight value (4500). Is accumulated. When the weighting value accumulated by the weighting value accumulating unit 13 is equal to or greater than the weighting value threshold (54000), the time determination unit 14 performs the same processing as described above (corresponding to S6 and S8), and generates heat of the mobile terminal 1. Will decline. That is, the heat generation of the portable terminal 1 decreases 12 seconds after the secondary battery temperature information from the temperature information acquisition unit 11 reaches 50 ° C. This also meets the above criteria.

  According to the above configuration, the weight value selection unit 12 selects a weight value from the secondary battery temperature information acquired by the temperature information acquisition unit 11, the weight value integration unit 13 integrates the weight value, and the integration is performed. When the weighted value becomes a threshold value, the time determination unit 14 notifies the power consumption function control unit 15 of the determination result that the high temperature limit time is exceeded, and the power consumption function control unit 15 controls the power consumption function to reduce heat generation. . That is, the weighting value is set so that the weighting value increases according to the increase in temperature, and the threshold value of the integrated value of the weighting value is set so as to correspond to the time when the user starts to feel uncomfortable by touching. Keep it. Thereby, the time determination unit 14 can accurately determine the timing when the user starts to feel uncomfortable. Therefore, the time determination unit 14 controls the power consumption until the user starts to feel uncomfortable, and the user can comfortably use the mobile terminal 10.

[3. Embodiment 1]
Next, an example of the operation of the temperature information acquisition unit 11 will be described in detail with reference to FIG. In the present embodiment, the secondary battery temperature detected by the secondary battery temperature sensor 3 is used as secondary battery temperature information, and S1, S31, and S35 in FIG. 3 are assumed. Note that S2, S32 to S34, S36, and S37 will be described later in the second embodiment.

  The temperature information acquisition unit 11 acquires the secondary battery temperature (secondary battery temperature α) from the secondary battery temperature sensor 3 (S1), and the secondary battery temperature α is assumed to be a temperature at which a human body comes into contact. If it is above (S31), the temperature information acquisition part 11 will determine the secondary battery (alpha) as secondary battery temperature information (S35), and will notify it to the weight value selection part 12.

  According to said structure, the temperature information acquisition part 11 determines the secondary battery temperature (secondary battery temperature (alpha)) directly detected by the secondary battery temperature sensor 3 as secondary battery temperature information. For this reason, since the temperature information acquisition part 11 can determine the secondary battery temperature information correctly, the secondary battery 2 becomes high temperature and can avoid the risk that the portable terminal 10 becomes high temperature reliably. The user can comfortably carry the portable terminal 10 and continue to use it.

  According to the above configuration, since the peripheral device temperature sensor 5 is not used, the temperature information acquisition unit 11 acquires the peripheral device temperature detected by the peripheral device temperature sensor 5 and refers to the temperature correlation table 6a to The process of converting the device temperature into the secondary battery temperature (secondary battery temperature β) and comparing the secondary battery temperature α and the secondary battery temperature β can be omitted. For this reason, the process from acquiring the secondary battery temperature to controlling the power consumption function can be quickly performed, and the temperature information acquisition unit 11 receives the secondary battery temperature from the secondary battery temperature sensor 3. The time from when α is acquired until the secondary battery temperature information is determined can be shortened. Therefore, the power consumption function control unit 15 immediately suppresses the heat generated by the power consumption before the user feels uncomfortable in response to the change in the secondary battery temperature α, and the user can comfortably carry out the mobile terminal. 10 can be used.

[4. Embodiment 2]
Next, another example of the operation of the temperature information acquisition unit 11 will be described in detail with reference to FIG. For convenience of explanation, members having the same functions as those described in the above embodiment are denoted by the same reference numerals and description thereof is omitted. In the present embodiment, when the secondary battery temperature information is determined from the secondary battery temperature detected by the secondary battery temperature sensor 3 and the peripheral device temperature information detected by the peripheral device temperature sensor 5, S1 in FIG. S2, S31 to S34, and S37 are assumed.

  The temperature information acquisition unit 11 acquires the secondary battery temperature (secondary battery temperature α) directly detected by the secondary battery temperature sensor 3 (S1). On the other hand, the temperature information acquisition unit 11 acquires peripheral device temperature information detected by the peripheral device temperature sensor 5 (S2), refers to the temperature correlation table 6a (S32), and the peripheral device temperature acquired in S2 A secondary battery temperature (secondary battery temperature β) corresponding to the information is acquired (S33).

  Here, the setting of the temperature correlation table 6a built in the electronic apparatus 10 having the configuration shown in FIG. 1 will be described with reference to FIG. The temperature correlation table 6a is a table in which secondary battery temperatures are set so as to correspond to peripheral device temperature information, and appropriate secondary battery temperatures obtained by experiments or the like are stored in advance. For example, when the peripheral device temperature becomes higher than the secondary battery temperature, the surface temperature of the mobile terminal 1 may be higher than the temperature acquired from the secondary battery temperature sensor. For this reason, secondary battery temperature (40 degreeC) etc. are set with respect to peripheral device temperature information (45 degreeC).

  And the temperature information acquisition part 11 judges whether the secondary battery temperature (alpha) is higher than the secondary battery temperature (beta), and the secondary battery temperature (alpha) is more than the temperature with which a human body is assumed to contact ( (S31 in FIG. 3). If the secondary battery temperature α is equal to or lower than the secondary battery temperature β, or if the secondary battery temperature α is lower than the temperature at which the human body is expected to contact, the temperature information acquisition unit 11 The difference between the secondary battery temperature α and the secondary battery temperature β is taken, and it is determined whether this difference is outside the proper range (S34). Further, if this difference is not outside the appropriate range, the temperature information acquisition unit 11 determines the higher one of the secondary battery temperature α and the secondary battery temperature β as the secondary battery temperature information (S37), and the weighting value. Notify the selection unit 12.

  For example, when a peripheral device 4 such as a CPU or a GPS sensor performs a specific operation regardless of the secondary battery 2, the current in the peripheral device 4 increases and Joule heat increases, and the temperature of the peripheral device 4 increases. To rise. The temperature of such a peripheral device 4 may exceed the temperature of the secondary battery 2 and greatly affects the surface temperature of the mobile terminal 10.

  Here, if the peripheral device temperature sensor 5 is installed in the vicinity of the peripheral device 4 that is likely to cause a temperature change, the temperature information acquisition unit 11 displays the peripheral device temperature information detected by the peripheral device temperature sensor 5 in the temperature correlation table. The secondary battery temperature (secondary battery temperature β) is converted with reference to 6a. Thereby, the temperature information acquisition part 11 not only acquires the secondary battery temperature (secondary battery temperature (alpha)) directly detected by the secondary battery temperature sensor 3, but indirectly secondary battery temperature (secondary battery temperature). β) is obtained. And the temperature information acquisition part 11 compares the secondary battery temperature (secondary battery temperature (alpha)) detected directly with the secondary battery temperature (secondary battery temperature (beta)) obtained indirectly, and is secondary. The higher one of the battery temperature α and the secondary battery temperature β is determined as the secondary battery temperature information. According to said structure, the temperature information acquisition part 11 acquires higher secondary battery temperature information using the secondary battery temperature sensor 3, the peripheral device temperature sensor 5, and the temperature correlation table 6a. Thereby, the weight value selection unit 12 can select a weight value corresponding to the high temperature acquired by the temperature information acquisition unit 11, and generates heat due to power consumption based on the temperature information corresponding to the surface temperature with higher accuracy. Can be suppressed.

[5. Embodiment 3]
The following will describe another embodiment of the present invention with reference to FIGS.

  As described above, the power consumption function control 15 unit of the mobile terminal 10 according to the present embodiment further includes the communication control unit 153 and the event factor control unit 154, and the mobile terminal 10 includes the application execution unit 71 and the camera control. The event generation unit 7 including the unit 72 is further provided.

  The communication control unit 153 stops communication defined in advance as having low urgency in S8 of FIG. Thereby, the power consumption accompanying communication is reduced, and the heat generation accompanying power consumption is reduced. At this time, the mobile terminal 10 may output a display or sound that can recognize that the communication is restricted. Further, instead of stopping communication, an interface may be provided that allows the user to select whether or not to limit communication. Thereby, the inconvenience of the user by communication being restricted can be eliminated or reduced.

  In S8 of FIG. 2, the event factor control unit 154 issues a command for stopping the function that causes the event occurrence included in the event generation unit 7. The event generation unit 7 includes units that generate events in the mobile terminal 10. The application execution unit 71 manages the execution of applications installed on the mobile terminal 10. The camera control unit 72 controls the camera of the mobile terminal 10 and generates an event related to camera control.

  When the event factor control unit 154 issues the command to the event generation unit 7, the application execution unit 71 stops an application that frequently generates an event, and the camera control unit 72 stops the camera function. For this reason, the frequency of occurrence of events that cause power consumption due to the use of the CPU is reduced, thereby reducing power consumption. Thereby, the heat generation accompanying power consumption can be further reduced.

[Example of software implementation]
The control blocks of the power consumption control device 1 (in particular, the weight value selection unit 12, the weight value integration unit 13, the time determination unit 14, and the power consumption function control unit 15) are logic circuits (IC chips) or the like formed in an integrated circuit (IC chip) or the like. Hardware) or software using a CPU (Central Processing Unit).

  In the latter case, the power consumption control device 1 includes a CPU that executes instructions of a program that is software for realizing each function, and a ROM (Read Only Memory) in which the program and various data are recorded so as to be readable by a computer (or CPU). ) Or a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for expanding the program, and the like. And the objective of this invention is achieved when a computer (or CPU) reads the said program from the said recording medium and runs it. As the recording medium, a “non-temporary tangible medium” such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. The program may be supplied to the computer via an arbitrary transmission medium (such as a communication network or a broadcast wave) that can transmit the program. The present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

[Summary]
A power consumption control device according to aspect 1 of the present invention includes a temperature information acquisition unit (temperature information acquisition unit 11) that acquires secondary battery temperature information indicating a temperature of a secondary battery built in a portable terminal, and the temperature information. Weighting value selection means (weighting value selection unit 12) for selecting a weighting value from the secondary battery temperature information acquired by the acquisition means, and weighting value integration means (weighting value) for integrating the weighting value selected by the weighting value selection means A time limit that is a time until the integration result of the weighting value integrated by the weighting value integration means reaches a predetermined threshold value, the integration unit 13) and the duration time during which the temperature of the mobile terminal continues at a certain temperature or more. When the time determination means (time determination unit 14) for determining whether or not the time has been exceeded and the time determination means determines that the duration has exceeded the time limit, the consumption of the mobile terminal Power function control means for controlling the functions of the force and (power function control unit 15), and a.

  According to said structure, a weight value selection means selects a weight value from the secondary battery temperature information which the temperature information acquisition means acquired. The time determination means exceeds the time limit that is the time until the weighted value summation result accumulated by the weighting value summation means reaches a predetermined threshold, for which the duration time of the portable terminal continues at a certain temperature or higher. It is determined whether or not. When the time determination unit determines that the duration has exceeded the time limit, the power consumption function control unit controls the function related to the power consumption of the portable terminal.

  That is, when the temperature of the secondary battery corresponding to the temperature of the mobile terminal is equal to or higher than a predetermined time for a predetermined time limit, the function related to the power consumption of the mobile terminal is controlled to suppress heat generation due to power consumption. be able to. Thereby, when the portable terminal and the user are in contact with each other for a long time, it is possible to prevent the user from feeling uncomfortable due to contact with an object having a temperature exceeding a certain temperature for a long time.

  In the power consumption control device according to aspect 2 of the present invention, in the aspect 1, the weight value selection unit refers to a weight value table in which the temperature of the secondary battery is associated with the weight value, and the temperature The weighting value may be selected from the secondary battery temperature information acquired by the information acquisition means.

  In the above configuration, an appropriate weight value associated with the temperature of the secondary battery is obtained in the weight value table by experiments or the like, and the appropriate weight value is stored in the weight value table. Thereby, the weight value selection means can select an appropriate weight value from the secondary battery temperature information acquired by the temperature information acquisition means. Therefore, it can be avoided that the secondary battery is in a high temperature state, that is, a state in which the mobile terminal exceeds the body temperature for a certain period of time lasts for a long time, and the user who contacts the mobile terminal feels uncomfortable.

  The power consumption control device according to aspect 3 of the present invention is the peripheral device temperature according to aspect 1 or 2, wherein the temperature information acquisition unit detects the temperature of a device provided around the secondary battery as the peripheral device temperature. Peripheral device temperature information indicating the temperature of the peripheral device is acquired from the sensor, and further, with reference to a temperature correlation table in which the peripheral device temperature and the temperature of the secondary battery are associated with each other, the peripheral device temperature information is Secondary battery temperature information may be obtained.

  According to the above configuration, the temperature information acquisition unit acquires the peripheral device temperature information from the peripheral device temperature sensor, refers to the temperature correlation table, and acquires the secondary battery temperature information from the peripheral device temperature information.

  Thereby, the temperature information acquisition means, for example, when the secondary battery temperature sensor that directly detects the temperature of the secondary battery fails, uses the peripheral device temperature sensor and the temperature correlation table to obtain the secondary battery temperature information. You can get it. Further, the temperature information acquisition means uses the peripheral device temperature sensor and the temperature correlation table when the secondary battery becomes high temperature due to heat radiation from the peripheral device of the secondary battery. The temperature information of the terminal can be acquired.

  Therefore, it is possible to reliably avoid the risk that the portable terminal is longer than a predetermined time and has a temperature equal to or higher than a certain temperature. Therefore, it is possible to more surely prevent the risk that the user of the mobile terminal gets uncomfortable feelings due to touching an object whose temperature exceeds a certain temperature for a long time.

  The portable terminal which concerns on aspect 4 of this invention may be provided with the power consumption control apparatus in any one of the said aspects 1-3.

  Thereby, the power consumption function control means can realize a portable terminal that controls functions related to power consumption before the user feels uncomfortable due to long-time contact with an object having a temperature exceeding a certain temperature.

  The power consumption control device according to each aspect of the present invention may be realized by a computer. In this case, the computer is operated as each unit included in the power consumption control device, so that the power consumption control device is installed in the computer. The power consumption control program of the power consumption control apparatus realized by the above and the computer-readable recording medium on which the power consumption control program is recorded also fall within the scope of the present invention.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

  The present invention can be used for, for example, a smart phone including a secondary battery, a PDA (Personal Digital Assistants), and a notebook computer.

DESCRIPTION OF SYMBOLS 1 Power consumption control apparatus 2 Secondary battery 3 Secondary battery temperature sensor 4 Peripheral device 5 Peripheral device temperature sensor 6 Memory | storage part 6a Temperature correlation table 6b Weight value table 11 Temperature information acquisition part 12 Weight value selection part 13 Weight value integration part 14 Time determination unit 15 Power consumption function control unit

Claims (5)

Temperature information acquisition means for acquiring secondary battery temperature information indicating the temperature of the secondary battery built in the portable terminal;
Weight value selection means for selecting a weight value from the secondary battery temperature information acquired by the temperature information acquisition means;
Weighting value integrating means for integrating the weighting values selected by the weighting value selecting means;
It is determined whether or not the duration time during which the temperature of the mobile terminal continues at a certain temperature has exceeded a time limit that is a time until the weighted value accumulated by the weighted value integrating means reaches a predetermined threshold. Time determination means to perform,
The weight value selection means comprises power consumption function control means for controlling a function related to power consumption of the mobile terminal when the duration time is determined to have exceeded the time limit. Power consumption control device.   The weight value selection means refers to a weight value table in which the temperature of the secondary battery is associated with the weight value, and selects the weight value from the secondary battery temperature information acquired by the temperature information acquisition means. The power consumption control device according to claim 1.   The temperature information acquisition means acquires peripheral device temperature information indicating the temperature of the peripheral device from a peripheral device temperature sensor that detects the temperature of a device provided around the secondary battery as a peripheral device temperature, and The secondary battery temperature information is obtained from the peripheral device temperature information with reference to a temperature correlation table in which the peripheral device temperature and the temperature of the secondary battery are associated with each other. Power consumption control device.   A portable terminal comprising the power consumption control device according to any one of claims 1 to 3.   A power consumption control program for causing a computer to function as the power consumption control device according to any one of claims 1 to 3, wherein the power consumption control program causes the computer to function as each of the means.

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