JP5440090B2 - Charging device, portable terminal, charging method, and program - Google Patents

Description

  The present invention relates to a secondary battery charging technique.

  In recent years, a secondary battery such as a lithium ion battery has been used as an operating power source in various devices such as a mobile phone, a portable personal computer, and a digital camera. Secondary batteries are batteries that can be repeatedly charged and discharged, and various charging methods are known. A general charging method is to start charging as soon as the secondary battery is ready to be charged, such as when the secondary battery is connected to a charger, so that the secondary battery is fully charged. A charging method is also known in which charging is not performed immediately after the secondary battery is ready to be charged, and charging is started at a preset charging start time (for example, Patent Documents 1 and 2). reference).

  In paragraphs [0002] to [0005] of Patent Document 1, as a technique for charging a secondary battery using midnight power with a low power charge, a state in which the secondary battery can be charged (charging the power supply device) The technology is described in which the secondary battery is charged at a preset midnight power supply start time and charged until the secondary battery is fully charged. . Further, in paragraphs [0010] to [0026] of Patent Document 1, as a technique for preventing an increase in power supply load due to simultaneous charging of a plurality of secondary batteries in a midnight power supply time zone, Such techniques are described. First, a plurality of secondary batteries are brought into a chargeable state. Thereafter, for each secondary battery, a charging time until the battery is fully charged is determined based on the state, and each secondary battery is determined based on the midnight power supply end time and the charging time for each secondary battery that has already been determined. Obtain the battery charging start time. Then, when the charging start time of any secondary battery among the charging start times of the respective secondary batteries is reached, charging of the corresponding secondary battery is started.

  In Patent Document 2, when the secondary battery is in a chargeable state and the preset charging start time is reached, whether or not the remaining battery capacity of the secondary battery is equal to or less than a predetermined determination value. If the remaining battery capacity is less than or equal to the determination value, the secondary battery is charged.If the remaining battery capacity exceeds the determination value, charging is not performed. A technique for preventing the occurrence of the above is described.

  There is also known a charging method that combines a method of starting charging immediately when the secondary battery is ready for charging and a method of starting charging when the charging start time comes (see, for example, Patent Document 3). ). Patent Document 3 describes the following technique as a charging technique for suppressing deterioration of a secondary battery. That is, when the secondary battery is ready to be charged, charging of the secondary battery is started, and charging is performed until the battery capacity of the secondary battery reaches a predetermined amount (50% of full charge). Thereafter, the charging start time is calculated by subtracting the charging time required to fully charge the secondary battery from the scheduled use starting time preset by the user. Then, when the charging start time is reached, charging of the secondary battery is started, and charging is performed so that the secondary battery is fully charged at the scheduled use start time.

JP-A-8-116626 JP 2007-6640 A JP 2002-142378 A

  According to the technique described in Patent Document 1, it is possible to charge the secondary battery in a time zone with a low power charge. However, since the technique described in Patent Document 1 has a time difference between the time when the secondary battery can be charged and the time when charging is actually started, a device in which the secondary battery is mounted between them. When it becomes necessary to use, there is a problem that the device must be used in a state where the remaining battery capacity of the secondary battery is small.

  According to the technique described in Patent Document 2, it is possible to prevent the memory effect from occurring. However, since the technique described in Patent Document 2 is also similar to the technique described in Patent Document 1, there is a time difference between when the secondary battery is made chargeable and when charging is actually started. There is a problem similar to the technique described in Patent Document 1.

  According to the technique described in Patent Document 3, as soon as the secondary battery is in a chargeable state, charging is performed until the battery capacity of the secondary battery reaches a predetermined amount (50% of full charge). Compared with the techniques described in Patent Documents 1 and 2, the risk that the device must be used in a state where the remaining battery capacity of the secondary battery is small can be reduced. However, in the technique described in Patent Document 3, when the secondary battery is in a chargeable state, the battery capacity of the secondary battery becomes a predetermined amount regardless of the time from that time to the charging start time. If the time until the charging start time is short, the amount of charge in the time zone not desired by the user increases, and the amount of charge in the time zone desired by the user decreases. There is. In other words, if the time until the charging start time is short, the number of times that a device equipped with a secondary battery is used until the charging start time is reached, and the battery capacity required during that time may be small, In the technique described in Patent Document 3, charging is performed until the battery capacity of the secondary battery reaches a predetermined amount regardless of the time until the charging start time, and thus the above-described problem occurs. For example, if the time zone desired by the user is a midnight power supply time zone where the electricity rate is cheap, the amount of charge in the time zone other than the midnight power supply time zone increases, and the charge amount in the midnight power supply time zone Will decrease.

[Object of the invention]
Therefore, an object of the present invention is to reduce the risk that the device must be used in a state where the battery capacity of the secondary battery is low, so that the secondary battery can be charged before the charge start time. Even when there is a part of the battery capacity, the amount of charge in the time zone that the user does not want increases and the amount of charge in the time zone that the user wants decreases. It is in providing the charging device which solves.

The first charging device according to the present invention is:
A charging circuit for charging the secondary battery while the charging instruction is performed;
Charging reservation means for setting a charging start time for the secondary battery according to a user instruction;
A required battery capacity calculating means for calculating a required battery capacity that is predicted to be required between the time when charging of the secondary battery becomes possible and the time when the charging starts.
When the required battery capacity calculated by the required battery capacity calculation means is larger than the remaining battery capacity of the secondary battery, the remaining battery capacity of the secondary battery is not reduced even before the charging start time. Charging control means for instructing charging to the charging circuit until the required battery capacity is reached.

The first portable device according to the present invention is:
A charging circuit for charging the secondary battery while the charging instruction is performed;
Charging reservation means for setting a charging start time for the secondary battery according to a user instruction;
A required battery capacity calculating means for calculating a required battery capacity that is predicted to be required between the time when charging of the secondary battery becomes possible and the time when the charging starts.
When the required battery capacity calculated by the required battery capacity calculation means is larger than the remaining battery capacity of the secondary battery, the remaining battery capacity of the secondary battery is not reduced even before the charging start time. Charging control means for instructing charging to the charging circuit until the required battery capacity is reached.

The first charging method according to the present invention includes:
The required battery capacity calculation means calculates a required battery capacity that is predicted to be required between the time when the secondary battery can be charged and the time when the charging starts.
The charging reservation means sets a charging start time for the secondary battery according to a user instruction,
When the required battery capacity calculated by the required battery capacity calculating means is greater than the remaining battery capacity of the secondary battery, the charge control means is configured to store the secondary battery even before the charge start time. The charging instruction is given to the charging circuit until the remaining battery capacity reaches the required battery capacity.

The first program according to the present invention is:
A program for causing a computer having a charging circuit for charging a secondary battery to function as a charging device while a charging instruction is performed,
The computer,
Charging reservation means for setting a charging start time for the secondary battery according to a user instruction;
A required battery capacity calculating means for calculating a required battery capacity that is predicted to be required between the time when charging of the secondary battery becomes possible and the time of starting charging.
When the required battery capacity calculated by the required battery capacity calculation means is larger than the remaining battery capacity of the secondary battery, the remaining battery capacity of the secondary battery is not reduced even before the charging start time. Until the required battery capacity is reached, the charging circuit is made to function as a charging control means for instructing charging.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to reduce the risk of having to use an apparatus in the state with a small battery capacity of a secondary battery, the amount of charge in the time slot | zone which a user does not desire can be reduced as much as possible. The effect that can be obtained.

It is a block diagram which shows the example of whole structure of the 1st Embodiment of this invention. 3 is a block diagram illustrating a configuration example of a storage unit 8. FIG. 3 is a block diagram illustrating a configuration example of a charging control unit 21. FIG. It is a flowchart which shows the process example of the 1st Embodiment of this invention. It is a figure which shows the example of a display of the list | wrist of the charge start time which has been set in the past. It is a figure which shows the other example of a display of the list of the charge start time which has been set in the past. It is a figure which shows the example of the content of the average usage count memory | storage part 84 used in the 2nd Embodiment of this invention. It is a block diagram which shows the structural example of the 3rd Embodiment of this invention.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

[First embodiment of the present invention]
Referring to FIG. 1, a device 1 according to a first embodiment of the present invention includes a control unit 2, a charging circuit 3, a secondary battery 4 such as a lithium ion battery, a power supply circuit 5, and a key operation unit. And a display unit 7 such as an LCD, and a storage unit 8. Here, the device 1 is a device in which a secondary battery is incorporated, such as a mobile phone, a portable personal computer, or a digital camera.

  As shown in FIG. 2, the storage unit 8 includes a charging start time storage unit 81, a charging mode storage unit 82, a charging reservation history storage unit 83, an average usage count storage unit 84, and an average consumed battery capacity storage unit 85. And.

  The charging start time storage unit 81 records the charging start time.

  The charging mode is recorded in the charging mode storage unit 82. In the present embodiment, there are two types of charging modes, charging mode 1 and charging mode 2. The charging mode 1 is a mode in which the secondary battery 4 is fully charged, and the charging mode 2 is a mode in which the secondary battery 4 is charged to the required battery capacity. The required battery capacity is a battery capacity that is estimated to be required between when the secondary battery 4 is in a chargeable state and when charging is started.

  The charging reservation history storage unit 83 records a charging start time set in the past.

  The average usage count storage unit 84 records the average usage count per unit time (for example, per hour) of the device 1. The average usage count per unit time may be recorded by the user using the operation unit 6, or an average usage count calculation means (not shown) for calculating the average usage count per unit time in the device 1. And the average usage count calculated by this means may be recorded in the average usage count storage unit 84. Various methods can be adopted as a method for calculating the average usage count in the average usage count calculation means. For example, the daily usage count of the device 1 is counted, and the count value is divided by a value corresponding to the unit time. Therefore, it is possible to adopt a method of simply obtaining the average number of times of use per hour. For example, if the unit time is 1 hour, the count value may be divided by 24.

  The average consumed battery capacity storage unit 85 records an average value of battery capacity consumed when the device 1 is used once (average consumed battery capacity). The average consumed battery capacity may be recorded in advance in the average consumed battery capacity storage unit 85 by the manufacturer of the device 1, or an average consumed battery capacity calculating unit (in the device 1 for calculating the average consumed battery capacity). (Not shown) may be provided, and the average consumed battery capacity calculated by this means may be recorded in the average consumed battery capacity storage unit 85. Various methods can be adopted as a method for calculating the average consumed battery capacity in the average consumed battery capacity calculating means. For example, the usage time is accumulated every time the device 1 is used once, and the number of uses is predetermined. When the number of times (for example, N times) is reached, the integrated value is divided by N to obtain an average value of one usage time of the device 1 and average the consumed battery capacity according to the average value of the usage time. A method of recording in the average consumed battery capacity storage unit 85 as the consumed battery capacity can be employed.

  When the external power supply 9 is connected, the charging circuit 3 notifies the control unit 2, and when the control unit 2 instructs to start charging, the charging circuit 3 uses the power supplied from the external power supply 9 to power the secondary battery 4. When charging is instructed to end charging from the control unit 2, the charging of the secondary battery 4 is ended.

  The power supply circuit 5 supplies the operating voltage from the secondary battery 4 to each part of the device 1.

  The control unit 2 controls the entire device 1 and includes a charge control unit 21. As shown in FIG. 3, the charge control unit 21 includes a charge reservation unit 22, a required battery capacity calculation unit 23, a charge control unit 24, and a clock 25 that displays the current time.

  The charging reservation means 22 displays an inquiry text on the display unit 7, thereby inquiring the user whether or not to set the charging start time, or selects the charging start time from the charging start times set in the past. A function for inquiring whether or not to do so. Furthermore, the charging reservation unit 22 displays a list of charging start times set in the past on the display unit 7 based on the user's response to the inquiry sentence, and records the charging start time in the charging start time storage unit 81. It has a function.

  The required battery capacity calculation means 23 calculates a minimum battery capacity (required battery capacity) that is predicted to be required from the present time until the charging start time.

  When the required battery capacity calculated by the required battery amount calculation means 23 is larger than the remaining battery capacity of the secondary battery 4, the charging control means 24 sends the charging circuit 3 to the charging circuit 3 even before the charging start time. Instruct the start of charging. When the remaining battery capacity of the secondary battery 4 reaches the required battery capacity, the charging circuit 3 is instructed to end charging. Further, when the current time indicated by the clock 25 matches the charging start time recorded in the charging start time storage unit 81, the power supply control unit 24 instructs the charging circuit 3 to start charging. When the secondary battery 4 is fully charged, the charging circuit 3 is instructed to end charging.

  The charging control unit 21 can be realized by a CPU (Central Processing Unit), and when realized by the CPU, for example, as follows. A disk, a semiconductor memory, and other recording media on which a program for causing the CPU to function as the charge control unit 21 is prepared, and the CPU reads the program. The CPU realizes the charge reservation unit 22, the required battery capacity calculation unit 23, the charge control unit 24, and the clock 25 on its own CPU by controlling its own operation according to the read program.

  Next, the operation of the present embodiment will be described in detail with reference to the flowchart of FIG.

  When the user connects the charger 3 to the external power source 9 in order to charge the secondary battery 4, the charging circuit 3 notifies the charging reservation means 22 that the supply of power has started (P- 1). Thereby, the charging reservation means 22 sets the charging mode recorded in the charging mode storage unit 82 as the charging mode 1 (P-2). Here, the charging mode 1 is a mode in which the secondary battery 4 is fully charged as described above.

  Thereafter, the charging reservation unit 22 displays an inquiry text on the display unit 7 and inquires of the user whether or not to set the charging start time (P-3).

  In response to this inquiry, if there is a response from the user that the charging start time is not set via the operation unit 6 (P-3 is No), the charging control means 24 is instructed to start the charging operation, The state of the charging control means 14 is shifted to the charging operation start state (P-14). On the other hand, when there is a response to set the charging start time (when P-3 is Yes), the charging reservation history storage unit 83 is displayed to the user by displaying an inquiry on the display unit 7. Is inquired whether or not to set the charge start time using the charge start time that has been set in the past (P-4).

  If there is a response from the user to set the charging start time without using the charging start time recorded in the charging reservation history storage unit 83 (No in P-4), the display The input column for the charging start time is displayed on the unit 7. When the charging start time is input to the input field by the user, the charging reservation unit 22 records the input charging start time in the charging start time storage unit 81 (P-7), and further stores the charging reservation history. If the same charging start time as the charging start time input this time is not recorded, the charging start time input this time is additionally recorded (P-8), and then the required battery capacity is calculated. The means 23 is operated (P-9).

  On the other hand, when there is a response from the user that the charge start time is set using the charge start time recorded in the charge reservation history storage unit 83 (Yes in P-4), the charge reservation history A list of charging start times recorded in the storage unit 83 is displayed on the display unit 7 (P-5), and the charging start time selected by the user using this list is recorded in the charging start time storage unit 81 (P -6) Then, the required battery capacity calculation means 23 is operated (P-9). Here, in P-5, for example, as shown in FIG. 5, the charging start times can be displayed in order of time, or as shown in FIG. 6, the charging start times can be displayed in order of use frequency. When displaying the charge start times in order of use frequency, when recording the charge start times in the charge reservation history storage unit 83 in P-8, the use frequency “1” is related to the charge start times. If the charging start time is selected by the user in P-5, the usage frequency associated therewith may be incremented. By doing so, the usage frequencies of the charging start times recorded in the charging reservation history storage unit 83 can be known, so that the charging start times can be displayed in order of usage frequency.

  In P-9, the required battery capacity calculation means 23 calculates the battery capacity (required battery capacity) that is predicted to be required before the charge start time recorded in the charge start time storage unit 81 is reached, The calculated required battery capacity is transferred to the charge control means 24. Specifically, first, the device 1 is based on the average usage count per unit time recorded in the average usage count storage unit 84 and the time from the current time displayed on the clock 25 to the charging start time. Predict how many times the battery may be used before the charging start time. For example, if the unit time is 1 hour and the time from the current time to the charging start time is 3.5 hours, the average number of uses per unit time is multiplied by 3.5 to obtain the charging start time of the device 1 Predict the number of uses. Next, the required battery capacity is calculated by multiplying the predicted number of uses by the average consumed battery capacity recorded in the average consumed battery capacity storage unit 85 when the device 1 is used once.

  When the required battery capacity is passed from the required battery capacity calculation means 23, the charging control means 24 is the minimum battery required for normal operation of the equipment 1 even if the equipment 1 is used before the charging start time. It is determined whether or not the capacity remains in the secondary battery 4 (P-10). Specifically, it is necessary at least by predicting the remaining battery capacity of the secondary battery 4 based on the terminal voltage of the secondary battery 4 and determining whether the predicted remaining battery capacity is greater than the required battery capacity. It is determined whether or not a sufficient battery capacity remains.

  If it is determined that the minimum necessary battery capacity remains in the secondary battery 4 (P-10 is Yes), the charging start in which the current time indicated by the clock 25 is recorded in the charging start time storage unit 81 is started. After waiting for the time (P-11, P-12), the state shifts to the charging operation start state (P-14). On the other hand, when it is determined that the minimum required battery capacity does not remain in the secondary battery 4 (P-10 is No), the charging mode recorded in the charging mode storage unit 82 is set to “charging mode 2”. After changing to "", the charging operation start state is entered (P-14).

  Thereafter, the charging control means 24 determines the charging mode recorded in the charging mode storage unit 82 (P-15).

  When it is determined that the charging mode 1 is recorded, the charging operation is performed until the secondary battery 4 is fully charged (P-16), and the process proceeds to a recharge start waiting state (P-17). More specifically, the charging circuit 3 is instructed to start charging, and when the secondary battery 4 is fully charged, the charging circuit 3 is instructed to end charging. If the charging control unit 24 detects a charging abnormality during the charging operation (P-18), the charging control unit 24 instructs the charging circuit 3 to end the charging and ends the charging operation (P-21). The detection of the charging abnormality is performed based on, for example, the terminal voltage of the secondary battery 4, and when the terminal voltage does not become a predetermined value or more, it is determined that the charging abnormality has occurred.

  On the other hand, when it is determined that the charging mode 2 is recorded in the charging mode storage unit 82, the charging operation is performed until the battery capacity of the secondary battery 4 reaches the required battery capacity obtained in P-9. (P-19), after the charging is completed, the charging mode recorded in the charging mode storage unit 82 is changed to “charging mode 1” (P-24), and the process returns to P-11. If a charging abnormality is detected during the charging operation (P-20), the charging operation is terminated (P-21).

  When the recharge condition is satisfied in the recharge start waiting state (P-17), the state shifts to the charge operation start state (P-14). If the recharge condition is not satisfied, it is checked whether or not the power supply from the external power supply 9 is finished (P-23). If the power supply is continued, the recharge start waiting state is entered. If the power supply has been completed (P-17), the process is terminated (P-22).

  When the device 1 is, for example, a mobile phone, an incoming call can be received even when the external power source 9 and the charging circuit 3 are connected via an outlet or a power cable so that the secondary battery 4 can be charged. In order to respond to this, the mobile phone 1 is used while the secondary battery 4 is in a chargeable state. Also, when it becomes necessary to contact, the mobile phone 1 is used while the secondary battery 4 is in a chargeable state.

  In the present embodiment, as soon as the secondary battery 5 is in a chargeable state, the battery capacity of the secondary battery 4 is the required battery capacity (minimum expected to be required before the charging start time is reached). The secondary battery 4 is charged until the battery capacity is reached. Therefore, even when there is an incoming call before the charging start time and the mobile phone 1 has to be used, it is possible to prevent a situation in which the battery runs out and the call cannot be made. In addition, the amount of charge before the charge start time can be reduced as much as possible.

[Effect of the first embodiment]
According to the present embodiment, the risk of having to use the device 1 in a state where the battery capacity of the secondary battery 4 is low can be reduced, and the amount of charge in a time zone not desired by the user is reduced as much as possible. The effect that it can be done can be obtained. The reason is that the required battery capacity calculating means 23 for calculating the required battery capacity that is predicted to be required between the time when charging of the secondary battery 4 becomes possible and the time when the charging starts, and the required battery capacity Is provided with charge control means 24 for instructing charging circuit 3 to charge until the capacity of secondary battery 4 reaches the required battery capacity. Because.

  Further, in the present embodiment, since the charging reservation means 22 that allows the user to select the charging start time set this time from the charging start times that have been selected in the past is provided, the operability is improved. can do.

[Second embodiment of the present invention]
Next, a second embodiment of the present invention will be described. In the present embodiment, the average usage count storage unit 84 records the average usage count of the device 1 for each time period, and the required battery capacity calculation means 23 calculates the required battery capacity according to the first embodiment. It is different from the form. Here, a point with the first embodiment will be described.

  Referring to FIG. 7, the average usage count storage unit 84 records the average usage count of the device 1 in each time zone. The example of FIG. 7 indicates that the average number of times the device 1 is used is 0.5 times for the 0 o'clock range, 0.2 times for the 1 o'clock range, 3 times for the 8 o'clock range, 5 times for the 9 o'clock range, and so on. The average usage count in each time zone may be recorded by the user using the operation unit 6, or an average usage count calculation means (not shown) is provided in the device 1, and the average usage calculated by this means is provided. The number of times may be recorded in the average use number storage unit 84. Various methods can be adopted as a method of calculating the average usage count in the average usage count calculation means. For example, the usage count of the device 1 in each time zone is measured over a predetermined period (for example, one week), and each time By dividing the measured value of the band by “7”, a method of calculating the average number of times the device 1 is used in each time period can be employed.

  The required battery capacity calculation means 23 calculates the required battery amount that is predicted to be required before the charge start time recorded in the charge start time storage unit 81 in P-9 of FIG. Specifically, first, the average number of uses in each time period from the current time to the charging start time is input from the average use number storage unit 84 and added. Thereafter, the required battery capacity is calculated based on the addition result and the average consumed battery capacity recorded in the average power consumption storage unit 85 when the device 1 is used once. Other operations are the same as those in the first embodiment.

[Effect of the second embodiment]
According to the present embodiment, in addition to the effect obtained in the first embodiment, it is possible to obtain an effect that the required battery capacity can be accurately predicted. The reason is that the required battery amount is calculated using the average number of times the device 1 is used for each time zone.

[Third embodiment of the present invention]
Next, a third embodiment of the present invention will be described.

  Referring to FIG. 8, the third embodiment of the present invention includes charge reservation means 101, required battery capacity calculation means 102, charge control circuit 103, and charging circuit 104 that charges secondary battery 105. ing.

  The charging reservation unit 101 sets a charging start time for the secondary battery 105 in accordance with a user instruction. The required battery capacity calculation means 102 is necessary between the time when the secondary battery 105 can be charged by connecting an external power source to the power supply circuit 104 and the time when the charging starts. Calculate the estimated required battery capacity. When the required battery capacity calculated by the required battery capacity calculation means 102 is larger than the remaining battery capacity of the secondary battery 105, the charging control means 103 until the remaining battery capacity of the secondary battery 105 reaches the required battery capacity. The charging circuit 104 is charged. The charging circuit 104 charges the secondary battery 105 while the charging instruction is performed. In addition, when the charging start time comes, the charging control unit 103 instructs the charging circuit 104 to charge until the secondary battery 105 is fully charged.

[Effect of the third embodiment]
According to the present embodiment, it is possible to reduce the risk of having to use the device on which the secondary battery 105 is mounted in a state where the remaining battery capacity of the secondary battery 105 is small, and the user can The effect that the amount of charge in an undesired time zone can be reduced as much as possible can be obtained. The reason is that the required battery capacity calculation means 102 for calculating the required battery capacity that is predicted to be required between the time when the secondary battery 105 becomes in a chargeable state and the time when charging starts, and the required battery capacity is the secondary battery capacity. If the remaining battery capacity of the battery 105 is larger than the remaining battery capacity of the battery 105, the charging control means 103 that instructs the charging circuit 104 to charge until the remaining battery capacity of the secondary battery 105 reaches the required battery capacity is provided. is there.

  The present invention can be applied to various devices such as a mobile phone, a portable personal computer, and a digital camera on which a secondary battery is mounted.

DESCRIPTION OF SYMBOLS 1 ... Apparatus 2 ... Control part 21 ... Charge control part 22 ... Charge reservation means 23 ... Required battery capacity calculation means 24 ... Charge control means 25 ... Clock 3 ... Charging circuit 4 ... secondary battery 5 ... power supply circuit 6 ... operation unit 7 ... display unit 8 ... storage unit 81 ... charging start time storage unit 82 ... charging mode storage unit 83 ... Charge reservation history storage unit 84 ... Average usage count storage unit 85 ... Average consumed battery capacity storage unit 101 ... Charge reservation means 102 ... Required battery capacity calculation means 103 ... Charge control Means 104 ... charging circuit 105 ... secondary battery

Claims (12)

A charging circuit for charging the secondary battery while the charging instruction is performed;
Charging reservation means for setting a charging start time for the secondary battery according to a user instruction;
A required battery capacity calculating means for calculating a required battery capacity that is predicted to be required between the time when charging of the secondary battery becomes possible and the time when the charging starts.
When the required battery capacity calculated by the required battery capacity calculation means is larger than the remaining battery capacity of the secondary battery, the remaining battery capacity of the secondary battery is not reduced even before the charging start time. A charging device comprising charging control means for instructing charging to the charging circuit until the required battery capacity is reached,
Before Symbol required battery capacity calculating means, the average number of uses of a device mounted with the secondary battery in each time band between the time when the charging is made possible to the secondary battery to the charging start time, the The charging device characterized in that the required battery capacity is calculated based on an average consumed battery capacity per unit usage count. In the charging device according to claim 1 Symbol placement,
A charge reservation history storage unit in which a charge start time set in the past is recorded, and
The charging apparatus is characterized in that the charging reservation unit allows a user to select a charging start time set from among charging start times recorded in the charging reservation history storage unit. The charging device according to claim 2 , wherein
A display unit; and
The charge reservation means sorts the charge start times recorded in the charge reservation history storage unit in order of time or use frequency and displays them on the display unit, and sets from the displayed charge start times A charging device that allows a user to select a charging start time. A secondary battery,
A charging circuit for charging the secondary battery while a charging instruction is performed;
Charging reservation means for setting a charging start time for the secondary battery according to a user instruction;
A required battery capacity calculating means for calculating a required battery capacity that is predicted to be required between the time when charging of the secondary battery becomes possible and the time when the charging starts.
When the required battery capacity calculated by the required battery capacity calculation means is larger than the remaining battery capacity of the secondary battery, the remaining battery capacity of the secondary battery is not reduced even before the charging start time. A portable device provided with charging control means for instructing charging to the charging circuit until the required battery capacity is reached ,
The required battery capacity calculating means, the average number of uses of the own mobile device in each time zone between the time the charging is made possible to the secondary battery to the charging start time, the unit number of uses of the own mobile device The required battery capacity is calculated based on the average consumed battery capacity per unit. In claim 4 Symbol placing portable device,
A charge reservation history storage unit in which a charge start time set in the past is recorded, and
The portable device according to claim 1, wherein the charge reservation unit causes a user to select a charge start time set from charge start times recorded in the charge reservation history storage unit. The portable device according to claim 5 , wherein
A display unit; and
The charge reservation means sorts the charge start times recorded in the charge reservation history storage unit in order of time or use frequency and displays them on the display unit, and sets from the displayed charge start times A portable device that allows a user to select a charging start time. Required battery capacity calculating means calculates the required battery capacity is predicted to be required between the time the charging is made possible to the secondary battery until the charging start time,
The charging reservation means sets a charging start time for the secondary battery according to a user instruction,
When the required battery capacity calculated by the required battery capacity calculating means is greater than the remaining battery capacity of the secondary battery, the charge control means is configured to store the secondary battery even before the charge start time. until the remaining battery capacity is the required battery capacity, a charge way to charge the secondary battery,
The required battery capacity calculating means includes an average number of times of use of the device in which the secondary battery is mounted in each time zone from when the secondary battery can be charged to the charge start time, and the device. The required battery capacity is calculated based on an average consumed battery capacity per unit usage count. The charging method according to claim 7 ,
A charge reservation history storage unit in which a charge start time set in the past is recorded, and
The charging method according to claim 1, wherein the charging reservation unit causes the user to select a charging start time set from charging start times recorded in the charging reservation history storage unit. The charging method according to claim 8 , wherein
The charge reservation unit sorts the charge start times recorded in the charge reservation history storage unit in order of time or use frequency and displays them on the display unit, and sets the charge start time displayed from among the displayed charge start times A charging method characterized by causing a user to select a start time. While charging instruction has been executed, a computer with a charging circuit for charging the secondary battery,
Charging reservation means for setting a charging start time for the secondary battery according to a user instruction;
A required battery capacity calculating means for calculating a required battery capacity that is predicted to be required between the time when charging of the secondary battery becomes possible and the time of starting charging.
When the required battery capacity calculated by the required battery capacity calculation means is larger than the remaining battery capacity of the secondary battery, the remaining battery capacity of the secondary battery is not reduced even before the charging start time. A program for causing the charging circuit to function as a charging control means for instructing charging until the required battery capacity is reached ,
The required battery capacity calculating means includes an average number of times of use of the device in which the secondary battery is mounted in each time zone from when the secondary battery can be charged to the charge start time, and the device. The required battery capacity is calculated based on an average consumed battery capacity per unit usage count. The program according to claim 10 , wherein
The computer includes a charge reservation history storage unit in which a charge start time set in the past is recorded, and
The charge reservation unit causes the user to select a charge start time set from charge start times recorded in the charge reservation history storage unit. The program according to claim 11 , wherein
The computer includes a display unit, and
The charge reservation means sorts the charge start times recorded in the charge reservation history storage unit in order of time or use frequency and displays them on the display unit, and sets from the displayed charge start times A program for causing a user to select a charging start time.

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