JP5872295B2 - Power storage device and portable communication terminal - Google Patents

Description

  The present invention relates to a power storage device and a portable communication terminal, and more specifically, a power storage device that charges a secondary battery using power supplied from two or more power generation facilities having different power generation types via a power network, and The present invention relates to an improvement of a mobile communication terminal.

  Usually, the electric power supplied by an electric power company as a commercial power source to general consumers includes electric power generated by various power generation methods such as thermal power generation and hydroelectric power generation. For example, hydroelectric power generation, solar power generation, and wind power generation are power generation methods that use renewable energy to generate harmful substances such as greenhouse gases and nuclear waste during power generation compared to thermal power generation and nuclear power generation. It is characterized by low emissions and does not consume reserve resources such as fossil fuels and nuclear fuels. Inducing the user to actively use the power generated by such a power generation method relatively increases the demand for the power generation type with a small environmental load, which is desirable from the viewpoint of environmental conservation.

  However, in the case of solar power generation or wind power generation, it is not always possible to stably generate a certain amount of power. Thus, when sufficient power is generated, if the user is guided to use the power generated by these power generation methods, the power can be efficiently consumed. For example, when charging a secondary battery mounted on a mobile phone or the like using a commercial power source, the user can arbitrarily specify the timing for charging as long as the remaining battery capacity is sufficient. . Then, when charging a secondary battery using the electric power supplied from a commercial power supply, it is possible to charge according to the electric power generation ratio of the electric power generation classification with a small environmental load. However, in the conventional power supply system, the power generation ratio of the power generation type with a small environmental load cannot be detected on the user side with respect to the power supplied from the commercial power source.

  Patent Document 1 discloses a technique for managing power more highly by associating a power supply source with a consumer. This Patent Document 1 describes that power supply control is performed according to the type of a power supply source when power input via a power line is output to a consumer device. Japanese Patent Application Laid-Open No. 2004-228561 describes performing power reception control for selecting a desired power generation facility and receiving power by acquiring attribute information indicating the type of commercial power from a management server of an electric power company. However, this patent document 1 cannot detect the ratio of the power generation type with a small environmental load in the consumer device for the power supplied via the power network.

JP 2011-83085 A

  The present invention has been made in view of the above circumstances, and a power storage device capable of guiding a user to actively use power generated by a specific power generation type such as a power generation method having a relatively small environmental load. The purpose is to provide.

  In particular, to provide a power storage device capable of charging a secondary battery in accordance with a power generation ratio of a specific power generation type when charging the secondary battery using power supplied via an electric power network. With the goal. Moreover, when supplying the discharge power of the secondary battery to the load, there is provided a power storage device capable of performing different discharge control depending on the power storage ratio of a specific power generation type occupying the stored charge amount of the secondary battery. Objective.

  Another object of the present invention is to provide a mobile communication terminal including the power storage device as described above. In particular, when receiving a call from another communication terminal, a mobile communication terminal capable of performing different notification control according to the power storage ratio for each power generation type related to the stored charge amount of the secondary battery in the communication terminal of the transmission source is provided. For the purpose.

A power storage device according to a first aspect of the present invention is a power storage device that charges a secondary battery using power supplied from two or more power generation facilities having different power generation types via a power network, a power attribute obtaining means get the power attribute information including a power ratio of each power category to total power supplied via a connection detecting means for detecting the connection of the upper Symbol power network, the connection detection means Based on the detection result, charge control means for charging the secondary battery with power supplied via the power network , the charge amount when the secondary battery is charged, and the power attribute information Storage information calculation means for obtaining storage information indicating a storage ratio for each power generation type related to the stored charge amount of the secondary battery, and a storage information storage device that holds the storage information When acquiring, when supplying the discharge power of the secondary battery to the load, based on the power storage information, and a discharge control means for limiting the discharge power, the charging control means, by the power attribute obtaining means Whether or not charging is possible is determined based on the power attribute information, and the secondary battery is charged based on the determination result.

According to such a configuration, the power generation type and the power generation ratio can be detected from the power attribute information for the power used for charging the secondary battery. For this reason, when charging a secondary battery using the power supplied via the power network, the secondary battery is charged according to the power generation ratio of a specific power generation type such as a power generation method with a relatively small environmental load. Therefore, the user can be guided to actively use the power generated by such a specific power generation type. In addition, when supplying the discharge power of the secondary battery to the load, different discharge control can be performed according to the storage ratio of a specific power generation type related to the amount of stored charge of the secondary battery. For example, the time for supplying the discharge power can be limited to a predetermined time zone, or the continuous supply time can be limited to a predetermined time.

A power storage device according to a second aspect of the present invention is a power storage device that charges a secondary battery using power supplied from two or more power generation facilities having different power generation types via a power network, wherein the power network is Power attribute acquisition means for acquiring power attribute information including a power generation ratio for each power generation type occupying the power supplied via the power supply, connection detection means for detecting connection to the power network, and detection of the connection detection means Based on the result, the charge control means for charging the secondary battery with the power supplied via the power network, the charge amount when the secondary battery is charged, and the power attribute information A storage information calculation means for obtaining storage information indicating a storage ratio for each power generation type related to the amount of stored charge of the secondary battery, and a storage information storage unit for storing the storage information And discharge control means for limiting power consumption at the load based on the storage information when supplying the discharge power of the secondary battery to the load, and the charge control means includes the power attribute acquisition means. Whether or not charging is possible is determined based on the power attribute information acquired by the above, and the secondary battery is charged based on the determination result .

According to such a configuration, when supplying the discharge power of the secondary battery to the load, different discharge control can be performed according to the storage ratio of the specific power generation type related to the amount of stored charge of the secondary battery. For example, the power consumption of the load can be limited so that the amount of power consumed within a certain time is reduced.

A power storage device according to a third aspect of the present invention includes, in addition to the above configuration, power generation designation storage means for holding power generation designation information for designating a power generation type for limiting power use and a determination threshold for the power generation ratio, and the charge control means However, with respect to the power generation type designated by the power generation designation information, the power generation ratio included in the power attribute information is compared with the determination threshold value, and whether or not charging is possible is determined based on the comparison result .

According to such a configuration, since the secondary battery can be charged according to the power generation ratio of a specific power generation type such as a power generation method having a relatively large environmental load , power is generated by such a specific power generation type. The use of power can be restricted. For this reason, utilization of the electric power generated by the power generation type with a small environmental load can be relatively promoted.

A mobile communication terminal according to a fourth aspect of the present invention is a mobile communication terminal that charges a secondary battery using power supplied from two or more power generation facilities having different power generation types via a power network, a power attribute obtaining means get the power attribute information including a power ratio of each power category to total power supplied via the network, a connection detection means for detecting connection to the upper Symbol power network, the connection detection Charge control means for charging the secondary battery with the power supplied via the power network based on the detection result of the means, and the charge amount and the power when the secondary battery is charged. Based on the attribute information, storage information calculation means for obtaining storage information indicating a storage ratio for each power generation type related to the amount of stored charge of the secondary battery, and storage information for holding the storage information In order to notify an incoming call based on the storage means, the storage information transmission means for transmitting the storage information to the other communication terminal, and the transmission source storage information received at the time of the incoming call when transmitting to the other communication terminal And incoming call notification control means for performing the notification control.

  According to such a configuration, when the secondary battery is charged using the power supplied via the power network, the power generation method of a specific power generation type such as a power generation method with a relatively small environmental load is used. The secondary battery can be charged. Further, when an incoming call is received from another communication terminal, different notification control can be performed according to the power storage ratio for each power generation type related to the stored charge amount of the secondary battery in the communication terminal of the transmission source.

  In the power storage device according to the present invention, when the secondary battery is charged using the power supplied via the power network, the secondary battery can be charged according to the power generation ratio of a specific power generation type. For this reason, a user can be induced to actively use the power generated by a specific power generation type such as a power generation method having a relatively small environmental load.

  In addition, when supplying the discharge power of the secondary battery to the load, different discharge control can be performed according to the storage ratio of a specific power generation type related to the amount of stored charge of the secondary battery.

  In addition, according to the present invention, it is possible to provide a mobile communication terminal including the power storage device as described above. In particular, in the mobile communication terminal according to the present invention, when receiving from another communication terminal, different notification control is performed according to the power storage ratio for each power generation type related to the stored charge amount of the secondary battery in the communication terminal of the transmission source. Can do.

1 is a system diagram showing a configuration example of a power supply system 100 including a power storage device according to an embodiment of the present invention. FIG. 2 is a block diagram showing a configuration example of the mobile communication terminal 21 in FIG. 1, and a mobile phone is shown as an example of the mobile communication terminal 21. FIG. 3 is a block diagram illustrating an example of a functional configuration in a CPU 50 in FIG. 2. 3 is a flowchart showing an example of an operation during charging in the mobile communication terminal 21 of FIG. 2. It is the figure which showed an example of the electrical storage information which the portable communication terminal 21 hold | maintains. It is the figure which showed another example of the electrical storage information which the portable communication terminal 21 hold | maintains. 3 is a flowchart showing an example of an operation during discharging in the mobile communication terminal 21 of FIG.

<Power supply system 100>
FIG. 1 is a system diagram showing a configuration example of a power supply system 100 including a power storage device according to an embodiment of the present invention. A mobile communication terminal 21 and an electric vehicle 22 are shown as examples of the power storage device. The power supply system 100 includes a power network 10 for supplying power generated by two or more power generation facilities having different power generation types to a general consumer as a commercial power source, and a communication network 30.

  The power network 10 is a power system of a commercial power source, and includes a power transmission network for transmitting power from various power generation facilities such as a solar power plant 11, a thermal power plant 12, and a wind power plant 13 to a substation 14, and a substation. 14 includes a distribution network for distributing power from 14 to general consumers, and a distribution network in general consumers. Electric power supplied to general consumers via the power network 10 is distributed to each device via the distribution board 20. For example, devices such as a mobile communication terminal 21, an electric vehicle 22, and a solar panel 23 are connected to the distribution board 20 via home wiring.

  The mobile communication terminal 21 is a portable communication device such as a mobile phone or PDA (Personal Digital Assistants), and operates using electric energy stored in a built-in battery. The electric vehicle 22 is a vehicle that operates using electric energy stored in a built-in battery, and has a communication function.

  Both the mobile communication terminal 21 and the electric vehicle 22 are connected to the power network 10 via a charging device (not shown), and each uses the power supplied via the power network 10 to charge the built-in battery. Can do.

  The solar panel 23 is a power generation device that receives sunlight and generates electric power. The electric power generated by the solar panel 23 can be stored in the battery 24 or supplied to devices on the power network 10.

  The communication network 30 is a communication system such as the Internet, a LAN (local area network), and a mobile communication network, to which mobile communication terminals 21 and 32, an electric vehicle 22, and a power management server 31 are connected.

  The power management server 31 holds power attribute information such as a power generation ratio for each power generation type in the power supplied to general consumers via the power network 10, and the power attribute according to a request from a device on the communication network 30. It is a power attribute management device that transmits information. Such a power management server 31 is managed and operated by an electric power company, for example.

  The power attribute information is information indicating an attribute of power supplied from the power generation facility such as the solar power plant 11 or the thermal power plant 12 on the power network 10 to the general consumer via the power network 10, and includes the power generation ratio, power generation Includes efficiency, transmission efficiency and hazardous substance emissions. The power generation ratio is a power ratio indicating how much power generated by what power generation method is included. The power generation efficiency is energy efficiency at the time of power generation, and is composed of a ratio of consumed energy and electric energy generated by power generation.

The transmission efficiency is the energy efficiency at the time of transmission, and consists of the ratio of the power at the time of power transmission and the power at the time of power reception. The amount of toxic substances emitted is the amount of toxic substances emitted during power generation. The amount of greenhouse gases such as carbon dioxide (CO ₂ ) and methane (also called greenhouse gases) and the nuclei such as uranium and plutonium. Consists of waste emissions. The power attribute information is held in association with the power generation type indicating what power generation method is used, and is updated based on the power generation information transmitted from the power generation facility on the power network 10. The power generation type is distinguished by the power generation method, the power generation efficiency, the transmission efficiency, and the emission amount of harmful substances.

  The mobile communication terminal 21 and the electric vehicle 22 are charged based on the power attribute information acquired from the power management server 31 when charging the built-in battery using the power supplied via the power network 10. Such charging control can guide the user to actively use the power generated by a specific power generation type such as a power generation method with a relatively small environmental load.

  In addition, the mobile communication terminal 21 and the electric vehicle 22 hold power storage information including a stored charge amount indicating the electrical energy stored in the built-in battery and a storage ratio for each power generation type related to the stored charge amount. This storage information is updated each time the built-in battery is charged, and is used for discharge control when supplying the discharge power of the built-in battery to the load. Such discharge control can also promote the use of power generated by a specific power generation type such as a power generation method with a relatively small environmental load.

  Furthermore, the mobile communication terminal 21 transmits the storage information to the mobile communication terminal 32 when making a telephone call to another communication terminal, for example, the mobile communication terminal 32 or transmitting an e-mail. The mobile communication terminal 32 performs notification control for notifying the incoming call based on the power storage information of the caller received when the mobile communication terminal 21 receives the call. With such incoming call notification control, the user can easily determine whether or not the communication terminal of the transmission source is a device that uses power generated by a specific power generation type such as a power generation method with a relatively small environmental load. Can be identified.

<Mobile communication terminal 21>
FIG. 2 is a block diagram showing a configuration example of the mobile communication terminal 21 in FIG. 1, and a mobile phone is shown as an example of the mobile communication terminal 21. The mobile communication terminal 21 includes a connection terminal 41, a power switch (switch) 42, a secondary battery 43, a CPU 50, a cellular communication unit 51, a speaker 52, a microphone 53, an audio processing unit 54, an LED display unit 55, a display 56, and an operation. The unit 57 and the camera 58 are included.

  The secondary battery 43 is a built-in battery that accumulates electric energy by charging and releases the electric energy accumulated by discharging, and a lead storage battery, a lithium ion battery, a nickel-hydrogen battery, or the like is used as the secondary battery 43.

  The connection terminal 41 is an electric power system connection part for detachably connecting to the electric power network 10, and a commercial power supply is input by connecting with a charging device. The power supply SW 42 is a circuit breaker capable of switching between a conduction state and a cutoff state, and is disposed between the connection terminal 41 and the secondary battery 43. The discharge power of the secondary battery 43 is supplied to each part including the CPU 50.

  The CPU 50 controls each part, performs charge / discharge control of the secondary battery 43, and generates a control signal for switching the power source SW42. The cellular communication unit 51 communicates with the base station via the communication network 30, and performs outgoing / incoming control, voice signal transmission / reception control, and electronic mail transmission / reception control. The audio processing unit 54 is an audio signal processing unit that amplifies the received audio signal and outputs it from the speaker 52, amplifies the audio signal input from the microphone 53, and outputs the amplified audio signal to the cellular communication unit 51.

  The LED display unit 55 is an indicator for notifying an incoming call by turning on or blinking an LED (light emitting diode). The display 56 is a display device for displaying a standby screen or the like, and includes, for example, a liquid crystal panel that performs display using liquid crystal alignment characteristics and an illumination backlight. The operation unit 57 is an input unit that accepts an operation by a user, and includes a character input key for inputting characters such as numbers, an on-hook key, and an off-hook key.

  In the mobile communication terminal 21, when the secondary battery 43 is charged using power supplied from a commercial power source, power attribute information is acquired from the power management server 31 and switching control of the power source SW 42 is performed. Also, storage information indicating the amount of stored charge in the secondary battery 43 and the storage ratio for each type of power generation is retained, and is used for discharge control when supplying the discharge power of the secondary battery 43 to each unit.

<CPU 50>
FIG. 3 is a block diagram showing an example of a functional configuration in the CPU 50 of FIG. The CPU 50 includes a power attribute acquisition unit 501, a power attribute storage unit 502, a connection detection unit 503, a charge control unit 504, a power generation designation storage unit 505, a power storage information calculation unit 506, a power storage information storage unit 507, a timer unit 508, and discharge control. 509, storage information transmission unit 510, transmission source storage information acquisition unit 511, and incoming call notification control unit 512.

  The power attribute acquisition unit 501 connects to the power management server 31 via the communication network 30 and acquires power attribute information from the power management server 31. Specifically, a power attribute request for acquiring power attribute information is generated and transmitted to the power management server 31 via the cellular communication unit 51. The power attribute information received from the power management server 31 is stored in the power attribute storage unit 502.

  The connection detection unit 503 detects that the connection terminal 41 is connected to the power network 10 and outputs the detection result to the power attribute acquisition unit 501 and the charge control unit 504. Whether or not the connection terminal 41 is connected to the power network 10 can be determined by, for example, the voltage level of the voltage applied to the connection terminal 41.

  In the power attribute acquisition unit 501, an operation for generating a power attribute request is performed based on the detection result by the connection detection unit 503. That is, if the connection detection unit 503 detects that the connection terminal 41 is connected to the power network 10, the power attribute information is acquired. The power attribute acquisition unit 501 acquires power attribute information from the power management server 31 and updates the power attribute information in the power attribute storage unit 502 every time a connection to the power network 10 is detected. By displaying the power attribute information acquired from the power management server 31 on the display 56, the user can identify the power generation type and the power generation ratio for the power used for charging the secondary battery 43.

  The charging control unit 504 generates a control signal to charge the secondary battery 43 with the power supplied via the connection terminal 41 based on the detection result by the connection detection unit 503, and outputs the control signal to the power supply SW42. That is, if the connection detection unit 503 detects that the connection terminal 41 is connected to the power network 10, a control signal for the power supply SW42 is generated. At that time, the charging control unit 504 determines whether or not charging is possible based on the power attribute information acquired by the power attribute acquisition unit 501, and charges the secondary battery 43 based on the determination result.

The power generation designation storage unit 505 holds power generation designation information for designating a power generation type Eh that restricts power use and a determination threshold Th for the power generation ratio. The charge control unit 504 performs an operation of comparing the power generation ratio Ph included in the power attribute information with the determination threshold Th for the power generation type Eh specified by the power generation specification information, and determining whether charging is possible based on the comparison result. Is called. That is, whether or not charging is possible is determined depending on whether or not the power P ₀ supplied via the connection terminal 41 includes the power of the power generation type Eh for the determination threshold Th or more.

  More specifically, if the power of the power generation type Eh is included in the determination threshold value Th or more, it is determined that charging is not possible, and if the power supply SW 42 is in a conductive state, an operation of switching to a cutoff state is performed. On the other hand, when the power generation ratio Ph of the power generation type Eh is less than the determination threshold Th, it is determined that charging is possible, and an operation of switching to the conductive state is performed if the power supply SW42 is in a cut-off state.

For example, the power P ₀ includes five power generation types E _{1 to} E ₅ , and the power generation ratios are P _{1 to} P ₅ (P ₁ + P ₂ +... + P ₅ = 1), respectively. When E _{1 to} E ₃ are designated in the power generation designation information as the power generation type Eh that cannot be charged, there are the following three charge control modes, and one of them can be selected.

In the first charge control mode, if any of the power generation ratios P _j of the power generation types E _{1 to} E ₃ is equal to or greater than the corresponding determination threshold T _j , it is determined that charging is not possible, while the power generation ratios P _{1 to} P ₃ are determined. Is less than the corresponding determination threshold value _Tj, it is determined that charging is possible. In the second charge control mode, when any of the power generation ratios P _{1 to} P ₃ is equal to or greater than the corresponding determination threshold value T _j, it is determined that charging is not possible, while any of the power generation types E _{1 to} E ₃ If the power generation ratio P _j is less than the corresponding determination threshold T _j , it is determined that charging is possible.

In the third charging control mode, if the total proportion _{P 13} obtained by adding the power ratio _P 1 to P ₃ are determined threshold value _{T 13} or more, whereas it is determined that charging is impossible, the total proportion _{P 13} is less than the determination threshold _{T 13} If so, it is determined that charging is possible. The determination threshold Th corresponding to the power generation type Eh may be a fixed value, but here, it can be arbitrarily specified by the user.

  By such charge control, the secondary battery 43 can be charged according to the power generation ratio of a specific power generation type such as a power generation method having a relatively small environmental load. Therefore, power is generated by such a specific power generation type. Users can be guided to actively use power. In particular, it is possible to prevent charging with electric power generated by a specific power generation type such as a power generation method having a relatively large environmental load.

  When the secondary battery 43 is charged, the storage information calculation unit 506 stores the storage information based on the power attribute information in the power attribute storage unit 502 and the amount of charge newly accumulated by the charge. Is stored in the power storage information storage unit 507. This power storage information is information indicating the power storage ratio for each power generation type related to the amount of stored charge stored in the secondary battery 43, and is based on the power generation ratio for each power generation type and the charge charge amount in the power used for charging. Desired. Further, the storage information is updated every time the secondary battery 43 is charged.

The accumulated charge amount is the total amount of power accumulated in the secondary battery 43, and the charge amount is the amount of power newly accumulated by charging. Therefore, a specific example of a method for calculating the power storage ratio for each power generation type with respect to the accumulated charge amount is as follows. First, the storage capacity of the secondary battery 43 is Q ₀ , the stored charge amount before charging is Q ₁ , and the storage ratios for the power generation types E _{1 to} E ₅ occupying the storage capacity Q ₀ are Q _{11 to} Q ₁₅ (Q ₁₁ , respectively). + Q ₁₂ +... + Q ₁₅ = Q ₁ / Q ₀ ), and P _{1 to} P ₃ (P ₁ + P ₂ + P ₃ = 1), respectively, for the power generation ratios of the power generation types E _{1 to} E ₃ in the charged power the charges amount to _{Q 10.}

At this time, the accumulated charge amount Q ₂ after charging is Q ₂ = Q ₁ + Q ₁₀ , and the storage ratio Q ₂₁ of the power generation type E ₁ is Q ₂₁ = (Q ₀ × Q ₁₁ + Q ₁₀ × P ₁ ) / Q ₀ Can be calculated. Charge ratio _Q 22 _{to Q 25} of the power generation type _E 2 to E ₅ can also be obtained in the same manner as in the case of the power generation type _{E 1.} Note that the power amount ratio for each power generation type in the stored charge amount (total power amount) may be used as the power storage ratio related to the stored charge amount.

When the discharge control unit 509 supplies the discharge power of the secondary battery 43 to each unit, the discharge control unit 509 limits the supply time of the discharge power based on the power storage information in the power storage information storage unit 507, or reduces the power consumption in each unit. A mode switching signal is generated to be limited, and is output to each unit. Specifically, the pre-specified power type Ek, charge ratio Qk occupying the storage capacitor Q ₀ is equal to a predetermined determination threshold value Tk above, the operation of limiting the like discharge power supply time is performed. On the other hand, when the power storage ratio Qk of the power generation type Ek is less than the determination threshold value Tk, the supply time of the discharge power is not limited.

  In the first discharge control mode that limits the supply time of the discharge power, the time for supplying the discharge power is limited to a predetermined time zone based on the output of the time measuring unit 508, or the time that can be continuously supplied. An operation is performed to limit the value within a predetermined time. In the second discharge control mode for limiting the power consumption in each unit, an operation for limiting the power consumption in each unit to a certain level or less is performed so that the amount of power consumed in a certain time is reduced. For example, operations such as lowering the frequency of the operation clock of the CPU 50 below a certain level, stopping the operation of the camera 58, or lowering the luminance of the display 56 below a certain level are performed.

  By such discharge control, it is possible to limit the use of accumulated charges for a specific power generation type such as a power generation method having a relatively large environmental load. For this reason, utilization of the electric power generated by the power generation type with a small environmental load can be promoted.

  When transmitting to another communication terminal, the power storage information transmission unit 510 reads the power storage information in the power storage information storage unit 507 and transmits it to the other communication terminal via the cellular communication unit 51. The power storage information is transmitted to another communication terminal via the power management server 31.

  When receiving a call from another communication terminal, the caller power storage information acquisition unit 511 acquires the power storage information of the caller from the power management server 31 via the cellular communication unit 51 and outputs it to the call notification control unit 512. Specifically, a transmission source information request for acquiring the power storage information of the transmission source is generated and transmitted to the power management server 31 via the cellular communication unit 51. The power management server 31 transmits the storage information based on the transmission source information request received from the mobile communication terminal 21.

  The incoming call notification control unit 512 generates a control signal to perform notification control for notifying an incoming call based on the power storage information of the caller received at the time of incoming call, and outputs the control signal to the LED display unit 55. By such notification control, different notification control can be performed according to the power storage ratio for each power generation type related to the amount of charge stored in the secondary battery in the communication terminal of the transmission source.

  For example, for the power generation type Em designated in advance, the lighting color of the LED display unit 55 is made different depending on whether or not the power storage ratio Qm related to the accumulated charge amount Q is equal to or greater than a predetermined determination threshold Tm, or a blinking pattern An operation such as making the values different is performed.

<Flow during charging>
Steps S101 to S105 in FIG. 4 are flowcharts showing an example of the operation at the time of charging in the mobile communication terminal 21 in FIG. First, when the connection detection unit 503 detects that the connection terminal 41 is connected to the power network 10, the power attribute acquisition unit 501 connects to the power management server 31 and acquires power attribute information (Step S101, S102).

Next, the charging control unit 504 determines whether or not charging is possible based on the power attribute information acquired by the power attribute acquisition unit 501 (step S103). At this time, if the power P ₀ supplied via the connection terminal 41 is clean power, it is determined that charging is possible and the power source SW 42 is switched to a conductive state, thereby starting charging (step S104). Here, the power with the power generation ratio Ph of the power generation type Eh being less than the determination threshold Th is called clean power.

On the other hand, if the power P ₀ is not clean power, that is, if the power generation ratio of the power generation type Eh is equal to or greater than the determination threshold Th, it is determined that charging is not possible, and the power source SW 42 is switched to the cut-off state. The process ends (step S105).

<Power storage information>
FIG. 5 is a diagram illustrating an example of power storage information held by the mobile communication terminal 21. The power storage information, and the charge ratio Qj for each generation type Ej occupying the storage capacitor Q ₀ of the rechargeable battery 43 consists of a CO ₂ emissions Hj of each power generation type Ej, are held in association with each other. For example, the storage ratio Q ₁ of the power generation type E ₁ “thermal power generation” is 20%, and the CO ₂ emission amount H ₁ is 0.5 kg per ₁ kWh of electric power. Further, the charge ratio _{Q 2} of the generator type _{E 2} "photovoltaic" is 15%, the CO ₂ emissions _{H 2} is 0.2kg per 1 kWh.

In addition, the power storage ratio Q ₃ of the power generation type E ₃ “ solar power generation ” is 18%, and the CO ₂ emission amount H ₃ is 0.1 kg per kWh. When supplying the discharge power of the secondary battery 43 to each unit, the supply time of the discharge power is limited based on such power storage information, or the power consumption in each unit is limited.

Also, for example, when it is defined that the CO ₂ emission amount Hj uses only power of the power generation type Ej of 0.3 kg or less per kWh, the power generation types that can be used are only E ₂ and E ₃ , and usable power the amount is a 33% of the storage capacitor _{Q 0.}

FIG. 6 is a diagram showing another example of the storage information held by the mobile communication terminal 21. In this power storage information, the power storage ratio Qj, the CO ₂ emission amount Hj, and the charging date and time Dj are held in association with the power generation type Ej. For example, the power storage ratio Q ₁ of the power generation type E ₁ “thermal power generation” is 20%, the CO ₂ emission amount H ₁ is 0.5 kg per ₁ kWh of electric power, and the charging date D ₁ is December 10 9:00.

In addition, the electricity storage ratio Q ₂ of the power generation type E ₂ “solar power generation” is 15%, the CO ₂ emission amount H ₂ is 0.2 kg per kWh, and the charging date D ₂ is It is 9:00. Further, the power storage ratio Q ₃ of the power generation type E ₃ “thermal power generation” is 18%, the CO ₂ emission amount H ₃ is 0.1 kg per kWh, and the charging date D ₃ is 9 on December 10 0:00.

On the other hand, the power storage ratio Q ₄ of the power generation type E ₄ “hydroelectric power generation” is 18%, the CO ₂ emission amount H ₄ is 0.3 kg per kWh, and the charging date D ₄ is 16 on December 12. 0:00. In addition, the power storage ratio Q ₅ of the power generation type E ₅ “solar power generation” is 11%, the CO ₂ emission amount H ₅ is 0.2 kg per kWh, and the charging date D ₅ is 12 December It is 16:00.

For such power storage information, there may be a case where the usage method of the stored charge amount Q is defined as follows. For example, (1) Solar power generation is used preferentially. (2) The same power generation type is used from the one with the least CO ₂ emission. (3) The same power generation type and the same CO ₂ emission amount are used from the oldest charging date. In such a rule, power can be used in the order of power generation types E ₃ , E ₂ , E ₅ , E ₄ , E ₁ .

The following provisions are also conceivable. (1) Solar power generation is used preferentially, but if there is no solar power generation, only thermal power generation is used. (2) The same power generation type is used from the one with the least CO ₂ emission. (3) The same power generation type and the same CO ₂ emission amount are used from the oldest charging date. In such a rule, power can be used in the order of power generation types E ₃ , E ₂ , E ₅ , E ₁ .

<Flow during discharge>
Steps S201 to S210 in FIG. 7 are flowcharts illustrating an example of an operation during discharging in the mobile communication terminal 21 in FIG. First, the discharge control unit 509 searches the power storage information in the power storage information storage unit 507 and extracts the power storage information of solar power generation (steps S201 and S202). At this time, if there are a plurality of pieces of storage information of solar power generation, the one with the smallest CO ₂ emission amount is selected as a discharge power usage target (step S203). Further, if there are a plurality of solar power generations with the smallest CO ₂ emission, the one with the oldest charging date and time is selected as a target for use of the discharged power (step S204).

  The discharge control unit 509 starts supplying discharge power for the amount of stored power of the selected power generation type (step S205). Next, the discharge control unit 509 updates the storage information when the supply of the discharge power for the amount of storage is completed (steps S206 and S207), and if there is other storage information of solar power generation, the step S203 and subsequent steps. This processing procedure is repeated (step S208). The discharge control unit 509 extracts another power generation type when there is no storage information of solar power generation (step S209), repeats the processing procedure after step S203, and ends this processing when the battery runs out ( Step S210).

  According to the present embodiment, the power generation type and the power generation ratio can be detected from the power attribute information for the power used for charging the secondary battery 43. For this reason, when the secondary battery 43 is charged using the power supplied via the power network 10, the secondary battery 43 is selected according to the power generation ratio of a specific power generation type such as a power generation method having a relatively small environmental load. Therefore, the user can be guided to actively use the power generated by such a specific power generation type.

  Further, when the discharge power of the secondary battery 43 is supplied to the load, different discharge control can be performed according to the storage ratio of a specific power generation type related to the amount of stored charge of the secondary battery 43. Furthermore, when receiving an incoming call from another communication terminal, different notification control can be performed according to the power storage ratio for each power generation type related to the accumulated charge amount of the secondary battery in the communication terminal of the transmission source.

  In the present embodiment, when supplying the discharge power of the secondary battery 43 to the load, the frequency of the operation clock of the CPU 50 is reduced based on the storage information, or the operation of the camera 58 is stopped, or The example in which the operation | movement which reduces the brightness | luminance of the display 56 was performed was demonstrated. However, the present invention may be in another form as discharge control when supplying the discharge power of the secondary battery 43 to the load. For example, in the case of the electric vehicle 22, the maximum speed and acceleration may be limited by limiting the upper limit of the output power and rotational torque of the electric motor based on the storage information.

  In the present embodiment, an example in which power is supplied from a power generation facility such as a thermal power plant 12 via the power network 10 has been described. However, the present invention provides a power supply source to the power network 10. It is not limited to. For example, the present invention can also be applied to a power storage device that charges the secondary battery 43 using power supplied from a power supply device such as a solar panel 23 or a battery 24 connected to the power network 10.

  In the present embodiment, an example in which the power attribute information is acquired from the power management server 31 based on the connection terminal 41 being connected to the power network 10 has been described. The acquisition timing is not limited to this. For example, the power attribute information may be periodically acquired from the power management server 31.

  Further, in the present embodiment, an example has been described in which the storage information is transmitted to the power management server 31 at the time of transmission, and different incoming notification is performed according to the storage information of the transmission source received at the time of reception. However, the present invention includes a configuration in which the power storage information is directly transmitted to the destination communication terminal without going through the power management server 31 when making a telephone call or transmitting an e-mail. Further, it may be configured such that when the telephone call is made, the storage system transmits the storage information to the communication company's switch, so that the switch changes the ringing tone such as RBT (ringback tone) according to the storage information. . Further, it may be configured such that the power storage information is added to the mail text or the header when the e-mail is transmitted.

DESCRIPTION OF SYMBOLS 100 Power supply system 10 Electric power network 11 Solar power plant 12 Thermal power plant 13 Wind power plant 14 Substation 20 Distribution board 21, 32 Portable communication terminal 22 Electric vehicle 23 Solar panel 30 Communication network 31 Power management server 41 Connection terminal 42 Power SW
43 Secondary battery 50 CPU
501 Power attribute acquisition unit 502 Power attribute storage unit 503 Connection detection unit 504 Charge control unit 505 Power generation designation storage unit 506 Power storage information calculation unit 507 Power storage information storage unit 508 Timing unit 509 Discharge control unit 510 Power storage information transmission unit 511 Source power storage information Acquisition unit 512 Incoming notification control unit 51 Cellular communication unit 52 Speaker 53 Microphone 54 Audio processing unit 55 LED display unit 56 Display 57 Operation unit 58 Camera

Claims (4)

In a power storage device that charges a secondary battery using power supplied from two or more power generation facilities having different power generation types via a power network,
A power attribute obtaining means get the power attribute information including a power ratio of each power category to total power supplied through the power network,
A connection detector for detecting connection to the upper Symbol power network,
Charging control means for charging the secondary battery with power supplied via the power network based on a detection result of the connection detecting means ;
A power storage information calculating means for obtaining power storage information indicating a power storage ratio for each power generation type related to a stored charge amount of the secondary battery, based on a charge amount when the secondary battery is charged and the power attribute information; ,
Power storage information storage means for storing the power storage information;
A discharge control means for limiting the discharge power based on the storage information when supplying the discharge power of the secondary battery to a load ;
The charge control means determines whether or not charging is possible based on the power attribute information acquired by the power attribute acquisition means, and charges the secondary battery based on the determination result. .   In a power storage device that charges a secondary battery using power supplied from two or more power generation facilities having different power generation types via a power network,
  Power attribute acquisition means for acquiring power attribute information including a power generation ratio for each power generation type in the power supplied via the power network;
  Connection detecting means for detecting that the power network is connected;
  Charging control means for charging the secondary battery with power supplied via the power network based on a detection result of the connection detecting means;
  A power storage information calculating means for obtaining power storage information indicating a power storage ratio for each power generation type related to a stored charge amount of the secondary battery, based on a charge amount when the secondary battery is charged and the power attribute information; ,
  Power storage information storage means for storing the power storage information;
  A discharge control means for limiting power consumption in the load based on the storage information when supplying the discharge power of the secondary battery to the load;
  The charge control means determines whether or not charging is possible based on the power attribute information acquired by the power attribute acquisition means, and charges the secondary battery based on the determination result. . Power generation designation storage means for holding power generation designation information for designating a power generation type that restricts power use and a determination threshold for the power generation ratio,
The charge control means compares the power generation ratio included in the power attribute information with the determination threshold for the power generation type specified by the power generation specification information, and determines whether charging is possible based on the comparison result. The power storage device according to claim 1 or 2 . In a mobile communication terminal that charges a secondary battery using power supplied from two or more power generation facilities with different power generation types via a power network,
A power attribute obtaining means get the power attribute information including a power ratio of each power category to total power supplied through the power network,
A connection detector for detecting connection to the upper Symbol power network,
Charging control means for charging the secondary battery with power supplied via the power network based on a detection result of the connection detecting means;
A power storage information calculating means for obtaining power storage information indicating a power storage ratio for each power generation type related to a stored charge amount of the secondary battery, based on a charge amount when the secondary battery is charged and the power attribute information; ,
Power storage information storage means for storing the power storage information;
A power storage information transmitting means for transmitting the power storage information to the other communication terminal when transmitting to the other communication terminal;
A mobile communication terminal comprising: an incoming call notification control means for performing notification control for notifying an incoming call based on power storage information of a caller received at the time of an incoming call.

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