JP2019075870A - Control device, electronic apparatus, control method, and control program - Google Patents

Abstract

To provide a control device, an electronic apparatus, a control method, and a control program, in which a time during which a full-charged state is maintained while a charger is connected to a device to be charged, can be suppressed.SOLUTION: A control device 10 includes a calculation unit 11 and a control unit 12. The calculation unit 11 calculates a predicted connection time during which a charger is predicted to be continuously connected, in a charging control target device having a rechargeable battery, on the basis of a charging result obtained when the battery is charged to a full-charge capacity. The control unit 12 sets a charging current parameter in accordance with a reference determined on the basis of the charging result obtained when the battery is charged to the full-charge capacity such that, when the charger is connected to the charging control target device, the predicted connection time calculated by the calculation unit 11 is taken to fully charge the device with constant current.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a control device, an electronic device, a control method, and a control program.

  For example, in electronic devices such as mobile terminals and mobile routers, batteries that can be repeatedly charged (that is, secondary batteries) are widely used. An electronic device equipped with a secondary battery charges with a current that can be drawn by the electronic device at maximum once charging is started. Therefore, for example, when charging in a state of being left for a long time such as at bedtime, a charger such as an AC adapter may be connected and a fully charged state may continue for a long time. When the charger is connected in this manner and the fully charged state is maintained for a long time, the capacity of the secondary battery may be degraded due to overcharging or the like.

  On the other hand, Patent Document 1 discloses a charge control device that controls the battery to be fully charged at the battery use start time. The battery use start time is estimated by allowing the user to set it or recording the time when the AC adapter was removed and calculating the average value. However, in this charge control device, the time required until the full charge state is calculated from the current voltage of the secondary battery, and control based on the calculated time is performed.

JP 2001-008376 A

  However, since the voltage at full charge does not change even if the capacity of the secondary battery is deteriorated, the technology described in Patent Document 1 can not calculate the time required until the full charge state is actually achieved. As the deterioration of the capacity of the secondary battery progresses, the charge completion time is earlier, and as a result, the time for maintaining the fully charged state is extended.

  An object of the present invention is to provide a control device, an electronic device, a control method, and a control program capable of suppressing a time during which a fully charged state is maintained in a state where a charger is connected to a charge control target device. It is in.

The control device according to the first aspect of the present invention is
In a charge control target device having a chargeable battery, an estimated connection time predicted to be continuously connected to a charger is calculated based on the charge result when the battery is charged to the full charge capacity. A calculation unit,
When the battery is connected to the charge control target device, charging is performed when the battery is charged to a full charge capacity so that the estimated connection time calculated by the calculation unit is fully charged with a constant current. A controller configured to set the charge current parameter according to a standard determined based on the actual result;
Equipped with

An electronic device according to a second aspect of the present invention is
An electronic device that is a charge control target device including a chargeable battery,
The controller;
A storage unit that stores data indicating the charging performance;
A charge control unit that charges the battery with the charge current parameter set by the control device;
Equipped with

The control method according to the third aspect of the present invention is
A control method implemented by the controller,
In the charge control target device having a chargeable battery, based on the charge result when the battery is charged to the full charge capacity, the predicted connection time predicted that the charger is expected to be continuously connected is calculated ,
When a charger is connected to the charge control target device, based on the charge record when the battery is charged to the full charge capacity so that the calculated predicted connection time is fully charged with a constant current. Set charge current parameters according to the determined criteria.

The control program according to the fourth aspect of the present invention is
In the charge control target device having a chargeable battery, based on the charge result when the battery is charged to the full charge capacity, the predicted connection time predicted that the charger is expected to be continuously connected is calculated ,
When a charger is connected to the charge control target device, based on the charge record when the battery is charged to the full charge capacity so that the calculated predicted connection time is fully charged with a constant current. Set the charge current parameter according to the determined criteria,
It is a control program for making a control apparatus perform processing.

  According to the present invention, it is possible to provide a control device, an electronic device, a control method, and a control program capable of suppressing a time during which a fully charged state is maintained in a state where a charger is connected to a charge control target device. .

FIG. 2 is a view showing an example of the configuration of a control device according to Embodiment 1; FIG. 7 is a block diagram showing an exemplary configuration of an electronic device according to a second embodiment. It is a figure which shows an example of the charge performance table memorize | stored in Embodiment 2. FIG. FIG. 7 is a flow chart showing an example of a charge control method according to Embodiment 2. FIG. 14 is a flow chart showing an example of processing for creating / updating the charging result table according to the second embodiment. It is a flowchart which shows the continuation of FIG. It is a figure which shows an example of the charge performance table memorize | stored in Embodiment 3. FIG. FIG. 7 is a flow chart showing an example of a charge control method according to Embodiment 3. It is a figure showing an example of the hardware constitutions of a control device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the embodiments, the same or equivalent elements will be denoted by the same reference signs, and overlapping descriptions will be omitted.

First Embodiment
FIG. 1 is a diagram illustrating an exemplary configuration of a control device according to the first embodiment.
The control device 10 illustrated in FIG. 1 is mounted on an electronic device (hereinafter, also referred to as a “charge control target device”) having a rechargeable battery (that is, a secondary battery) and used. The charge control target device can charge the battery with a constant current, for example, by a charge control unit provided inside. However, as in a charge control target device having a general secondary battery, the charge control target device may also be capable of constant voltage charging, for example, by the charge control unit. As a secondary battery which can be charged by a constant current, a lithium ion secondary battery, a nickel-hydrogen storage battery and the like can be generally mentioned, but it is not limited to these. Examples of the electronic device include a mobile terminal such as a smartphone and a mobile phone, and a mobile router. However, the electronic device is not limited to this, and may be a stationary device.

As shown in FIG. 1, the control device 10 includes a calculation unit 11 and a control unit 12.
The calculation unit 11 inputs the charge result data of the charge control target device. The charge record data is data indicating the charge record when the battery of the charge control target device is charged to the full charge capacity. Thus, for example, there may be a charge that does not meet the full charge between the time when the full charge is performed and the next when the full charge is performed, and the data on the charge that did not meet the full charge is do not use. The control device 10 can monitor, for example, the battery capacity (capacity value indicated by the current value) measured by the charge control target device, and determine whether or not the full charge has been reached in the increase state.

  Then, the calculation unit 11 calculates, based on the charging result, a predicted connection time that is predicted to be continuously connected to a charger such as an AC adapter. As a matter of course, “the charger is connected” means that the charger is connected to the charge control target device in a state where it can be energized.

  When the charger is connected to the charge control target device, the control unit 12 performs the above-mentioned charge results (that is, charge at the time of full charge) so as to fully charge with constant current over the estimated connection time calculated by the calculation unit 11 Set the charging current parameters according to the criteria determined based on the In other words, the control unit 12 performs control such that the battery is fully charged at the time predicted to be removed. The charge current parameter is a parameter mainly indicating a current value, and is set, for example, for the charge control unit of the charge control target device. By this setting, the battery is charged at a constant current value before the predicted connection time has elapsed.

  Note that the user may have a plurality of chargers suitable for the charge control target device. Therefore, the charge performance data may also include data regarding events charged to full charge capacity with different chargers. In addition, the charger connected when the setting of the charging current parameter is made may be different from the charger that caused the event included in the charging result data.

  As described above, the control device 10 according to the first embodiment fully charges the device with the constant current over the predicted connection time calculated based on the charge result of the charge control target device when fully charged. The charging current parameter is set according to the standard determined based on the charging performance of Although the charge capacity of the secondary battery is degraded due to the number of times of charge, storage, operating temperature, etc., the control device 10 takes charge current parameters in consideration of the charge performance at full charge in order to take such deterioration into account. It is set. Therefore, according to control device 10, even if the capacity of the battery is deteriorated, the charge completion time does not come early, and the time during which the fully charged state is maintained is suppressed while the charger is connected to the charge control target device. As a result, the heat generation of the battery can be suppressed and the deterioration of the battery capacity can be suppressed.

  In addition, in the control device 10, when the charger is connected and charged, charging is performed with a current as small as possible taking an estimated connection time, and therefore, compared to the case where charging is performed with a large current. The heat generation of the battery can be suppressed, and the deterioration of the battery capacity can be suppressed. Furthermore, in the control device 10, since control is based on performing full charge, it is possible to urge the user to fully charge since the predicted connection time can be accurate by performing full charge. As a result, it is possible to prolong the use time of the charge control target device and to reduce the number of times of charging.

Second Embodiment
<< Configuration example >>
FIG. 2 is a block diagram showing an exemplary configuration of the electronic device according to the second embodiment.
The electronic device 20 illustrated in FIG. 2 includes the control device 10, and also includes the secondary battery 21, the charge control unit 22, the charge interface 23, the power supply circuit 24, the communication unit 25, the storage unit 26, and the user interface 27. Although it is assumed that the electronic device 20 is a mobile device such as a mobile terminal including the communication unit 25, the present invention is not limited to this. Further, the electronic device according to the second embodiment may or may not have the communication unit 25.

  The control device 10 is a device that controls the overall operation of the electronic device 20, has the same configuration as that of the first embodiment, and also performs control for realizing other functions of the electronic device 20. The control device 10 will be described later with reference to FIG. 1, focusing on the characteristic part in the present embodiment.

  The secondary battery 21 is a battery that performs charging and discharging as a main power source of the electronic device 20. The secondary battery 21 may be, for example, a lithium ion battery, but is not limited thereto. The charge interface 23 is an interface for connecting to an AC adapter, and is, for example, a USB type-C connector, a microUSB type-B connector, or the like.

  The charge control unit 22 controls charging of the secondary battery 21 by the power received via the charge interface 23. The charge control unit 22 performs control to charge the secondary battery 21 with a parameter including the charge current parameter set by the control device 10. Basically, the charge control unit 22 performs control to charge the secondary battery 21 with a constant voltage after charging the secondary battery 21 with a constant current. Such control may be performed autonomously by the charge control unit 22 or may be performed according to an instruction from the control unit 12. As described above, basically, the electronic device 20 according to the present embodiment is a device that performs control of charging the secondary battery 21 with a constant voltage after charging the secondary battery 21 with a constant current. Further, the charge control unit 22 measures (monitors) the battery remaining amount (RC: Remaining Capacity) of the secondary battery 21 and the current output from the secondary battery 21 (that is, the consumption current (CC: Consumption Current)). Then, the controller 10 is notified of the result. The charge control unit 22 is realized by, for example, an integrated circuit.

  The power supply circuit 24 receives supply of power from the secondary battery 21 via the charge control unit 22, and supplies power to the control device 10, the communication unit 25, the storage unit 26, and the user interface 27. The power supply circuit 24 can also be configured to supply power to the charge control unit 22.

  The communication unit 25 can have, for example, a wireless local area network (LAN) circuit, a Bluetooth (registered trademark) circuit, an LTE (long term evolution) communication circuit, and the like according to a standard such as Wi-Fi (registered trademark). .

  The storage unit 26 stores data related to the secondary battery 21 including at least the charge result data of the electronic device 20. In addition, although it demonstrates on the premise that charge performance data are memorize | stored in the memory | storage part 26, charge performance data can also be memorize | stored in the memory provided in the control apparatus 10. FIG. The storage unit 26 can also store setting data regarding various settings of the electronic device 20, content data of a user who uses the electronic device 20, and the like.

  The user interface 27 is an operation interface between the mobile device and the user. The user interface 27 can be configured by, for example, a display unit with a touch panel function, or operation buttons and a display unit. Further, the user interface 27 reads and displays a GUI (Graphical User Interface) image stored in the storage unit 26 under the control of the control device 10, thereby causing the user to perform various selection operations. You can also do

Next, the control device 10 in the second embodiment will be described.
As in the first embodiment, the calculation unit 11 acquires charge performance data of the electronic device 20 by acquiring it from the storage unit 26 or the like. The charge record data is data indicating the charge record when the secondary battery 21 is charged to the full charge capacity as described above. Then, the calculation unit 11 calculates the predicted connection time predicted that the AC adapter will be continuously connected based on the charging time (constant current charging time) charged by the constant current indicated by the charging result data. Do.

  As in the first embodiment, when the charger is connected to the charge control target device, the control unit 12 causes the secondary battery to be fully charged with the constant current over the estimated connection time calculated by the calculation unit 11. The charging current parameter is set to the charging control unit 22 in accordance with the standard determined based on the charging result data when the battery 21 is charged to the full charge capacity. In the present embodiment, in particular, the control unit 12 is charged with a constant current indicated by the predicted connection time calculated by the calculation unit 11 and the charge performance data when the secondary battery 21 is charged to the full charge capacity. The above reference is determined according to the charge capacity (constant current charge capacity). The constant current charge capacity corresponds to a value obtained by subtracting the constant voltage charge capacity from the full charge capacity. Furthermore, the control unit 12 creates and manages the charge result data stored in the storage unit 26.

<< Operation example >>
A preferred operation example of the electronic device 20 according to the present embodiment will be described with reference to FIGS. FIG. 3 is a diagram showing an example of the charging result table stored in the storage unit 26. As shown in FIG. 4 is a flow chart showing an example of a charge control method according to the second embodiment, FIG. 5 is a flow chart showing an example of processing for creating and updating a charge result table according to the second embodiment, and FIG. 6 is a continuation of FIG. FIG.

  First, the charge result data input to the control device 10 will be described. The charge record data can be stored in the storage unit 26 in the form of, for example, the charge record table 30 shown in FIG. Although the values appearing in the following description, including the values in the charging performance table 30, are in units, the processing is not limited to this unit.

  The charging results table 30 manages (records) the charging results for the last seven times for which a full charge has been made. That is, in this example, the number of times of management is the last seven, and the charging result table 30 is shifted by one when the battery is fully charged, and the oldest data is deleted and the latest data is Updated to be written. Of course, the number of times of management is not limited to this, and can be arbitrarily determined by the designer, or can be set to a value that can be set by the user from the user interface 27.

  Also, in the charging result table 30, the time when the AC adapter is connected (actually the date and time), the time when the AC adapter is removed (actually the date and time), charging time (connection time) [h], constant voltage charging as items Time [h], constant voltage charge capacity [h], and full charge capacity [mAh] are managed. Also, in the average column (average column) of the charging result table 30, an average charging time [h] (see IV in the charging result table 30) obtained by averaging the number of times of management (average charge voltage charging time [h] An average constant voltage charge capacity [h] (see also II) and an average full charge capacity [mAh] (see also I) are managed. Here, the fully charged capacity refers to the fully charged capacity, and the charging time is the connection time of the charger when charged to the fully charged capacity, that is, the date and time when the AC adapter was removed minus the connected date and time Point to time. The constant voltage charge time refers to the charge time when charging with a constant voltage, and the constant voltage charge capacity refers to the capacity charged with the charge time when charging with a constant voltage.

  Next, an example of a charge control method in the electronic device 20 will be described with reference to FIG. 4, focusing on a method of calculating a charge current value as a charge current parameter.

  In the electronic device 20, the control unit 12 of the control device 10 monitors the connection of the AC adapter by monitoring whether or not an interrupt signal notifying that the AC adapter is connected has entered the control device 10 from the charge control unit 22. Is monitored (step S101). When the interrupt signal is input (when connection is detected; YES in step S101), the control unit 12 refers to the charge result table 30 of the storage unit 26 and calculates the average result of the charge result table 30 in the average column. It is determined whether or not there is (step S102).

  When there is a calculation result (in the case of YES in step S102), control unit 12 causes user interface 27 to perform selection display to select whether function A is to be enabled or not, and waits for a selection operation from the user (step S103). Here, the function A indicates the function of setting the charging current parameter based on the charging result data at the time of full charge, which is a characteristic part of the present embodiment.

  When the function A is validated (YES in step S103), the control unit 12 acquires the average full charge capacity [mAh] from the charge record table 30 (step S104). Further, the control unit 12 acquires the current remaining battery capacity [mAh] from the charge control unit 22 (step S105). The average constant voltage charging capacity [mAh] is acquired from the charging result table 30 (step S106). The order of steps S104 to S106 does not matter.

  Next, the control unit 12 performs calculation using the values acquired in steps S104 to S106, and the average constant voltage charge capacity [mAh] is less than "average full charge capacity [mAh]-remaining battery capacity [mAh]" It is determined whether or not it is (step S107). If it falls below (in the case of YES in step S107), calculation unit 11 acquires average charge time [h] from charge record table 30 (step S108), and average constant voltage charge time [h] from charge record table 30 It acquires (step S109). The order of steps S108 and S109 does not matter.

  Then, the calculation unit 11 and the control unit 12 calculate the charging current value [mA] from the values acquired in steps S104 to S106, S108, and S109 using the following equation (1) (step S110). Here, in Equation (1), the calculation of the denominator corresponds to the calculation of the predicted connection time performed by the calculation unit 11, and the control unit 12 performs the other calculations. Moreover, the value shown by I-IV in the following Formula (1) respond | corresponds to the value I-IV of the average row | line in the charge performance table 30, respectively.

Here, in the molecule described in the formula (1), the average value of the capacity (constant current charge capacity) charged by constant current charge is obtained by subtracting the average constant voltage charge capacity [mAh] from the average full charge capacity [mAh]. Ask for Further, by subtracting the present remaining battery capacity [mAh] from the value (average constant current charge capacity), the predicted charge capacity predicted to be charged before being fully charged is determined.
In the denominator, the average constant voltage charging time [h] is subtracted from the average charging time (average connection time) [h] to calculate the average value of the time (constant current charging time) charged by the constant current. This value (average constant current charging time) is the predicted connection time.

The charge current value [mA] of constant current charge is calculated by dividing the numerator by the denominator. In this way, the charging current value [mA] is determined as a reference for the current charging parameter.
In fact, the average battery remaining amount that indicates the average value [mAh] of the original battery remaining amount at the time of full charge (that is, the battery remaining amount before full charge) is stored in the charge result data. Substituting this "average battery remaining amount" instead of the "battery remaining amount" of the numerator of equation (1), the charging current value at the time of constant current charging indicated by the charging result at the time of full charging can be obtained. The above equation (1) is more important at the time of actual charging, instead of the average remaining battery level on the assumption that charging is started with the same remaining battery level on average when the battery is fully charged. The charging current value is approximately obtained by applying the current remaining amount of battery to be viewed.

  Next, the control unit 12 sets the charge control unit 22 so that the charge current value closest to the charge current value [mA] calculated in step S110 is obtained, and the charge control unit 22 controls charge of the secondary battery 21. Is started (step S111).

  If there is no calculation result in step S102 (in the case of NO), the charge control unit 22 is controlled to start charging with the charging current value [mA] initially set in the electronic device 20 (step S112) . The charging current value is a default charging current value in the electronic device 20, and is hereinafter referred to as a normal charging current value. The normal charging current value can be set, for example, between 1000 mA and 2000 mA. If the function A is not enabled in step S103 (in the case of NO), or if a predetermined time (for example, 10 seconds) elapses without selecting the function A, the process similarly proceeds to step S112, and the normal charging current value Charging will start.

  Also in the case where the average constant voltage charge capacity [mAh] exceeds in step S107 (in the case of NO), the process similarly shifts to step S112, and charging at the normal charge current value is started. In the case of NO in step S107, although the current battery remaining amount is equal to or more than the average constant current charge capacity, it is grasped that the user purposely connected the AC adapter, and the process proceeds to step S112. Therefore, constant voltage charge control may be performed. However, if the charge control unit 22 corresponds to the charging stop, the process may be ended in the case of NO in step S107, and the charging may not be performed.

  Preferably, the user can arbitrarily set the predetermined time for determining that the function A is invalid without selecting it in step S103 via the user interface 27.

Next, with reference to FIGS. 5 and 6, an example of the process of creating / updating the charging result table 30 will be described.
In the electronic device 20, the control unit 12 monitors the connection of the AC adapter as in step S101 of FIG. 4 (step S201). When the connection of the AC adapter is detected (in the case of YES at step S101), the control unit 12 monitors whether or not an interrupt signal notifying that the AC adapter has been removed has entered the control device 10 from the charge control unit 22. By doing this, removal of the AC adapter is monitored (step S202).

  When this interrupt signal is input (when removal is detected; in the case of YES in step S202), the control unit 12 confirms the battery remaining amount of the secondary battery 21 with the charge control unit 22, and the full charge capacity It is determined whether or not (step S203). For example, as described above, the control unit 12 monitors the battery capacity (capacitance value indicated by the current value) measured by the charge control target device, and determines whether or not the full charge has been reached in the increase state. be able to. In addition, in the state where the charging current parameter is set using function A, the control unit 12 estimates connection time because the full charge is achieved only by the constant current charge control without shifting to the constant voltage charge control. It can be determined that the battery has been fully charged since it has elapsed.

  When the battery is fully charged (in the case of YES in step S203), the control unit 12 detects the time detected in step S201 as the time when the AC adapter of the row of the latest row (current row) of the charge result table 30 is connected. (Step S204). The control unit 12 performs storage of data in the charging result table 30 with respect to the storage unit 26. In addition, the control unit 12 stores the time detected in step S202 at the time when the AC adapter in the current row of the charging result table 30 is removed (step S205). The order of steps S204 and S205 does not matter.

  Next, the control unit 12 calculates the time during which the AC adapter is connected from the time stored in steps S204 and S205, and stores it in the charging time [h] of the current row of the charging result table 30 (step S206). Note that, in order to obtain the time (actually, the date and time) in steps S204 and S205, the control device 10 has a clock function such as having a clock function IC. Thereby, the control device 10 can measure the charging time of the electronic device 20.

  Next, the control unit 12 appropriately obtains the battery capacity from the charge control unit 22 and obtains the clock information indicated by the clock function, whereby the constant voltage charge time [h], the constant voltage charge capacity [mAh], and the full charge capacity are obtained. [MAh] is obtained and stored in the current row of the charging result table 30 (step S207). For example, when the control unit 12 adopts a configuration in which the charge control unit 22 is instructed to perform constant voltage charge control, the control unit 12 stores the clock information and the battery remaining amount when the instruction is issued. Voltage charging time and constant voltage charging capacity can be calculated. On the other hand, in the configuration in which the charge control unit 22 autonomously shifts from constant current charge control to constant voltage charge control, the control unit 12 obtains the battery remaining amount at the time of the transition from the charge control unit 22 and obtains the clock function. If the clock information shown is stored, then it is possible to calculate the constant voltage charging time and the constant voltage charging capacity by determining that the full charge capacity has been reached and obtaining the clock information at that time.

  Subsequently, the control unit 12 confirms the presence or absence of data for the past six times in the charging result table 30 (step S208 in FIG. 6). If it exists (YES in step S208), the control unit 12 uses the following equation (2) to charge time [h], constant voltage charge time [h] based on data for the past 6 times and current time of the charge result table 30: h] The average value is calculated for each of the constant voltage charge capacity [mAh] and the full charge capacity [mAh] (step S209).

Average column value = {(average value from one time before to six times before) × 10 + value of this time line} / 11
... (2)

  In the above equation (2), the average value from the previous column to the sixth column of the charge result table 30 is calculated, the calculated value is multiplied by 10, and the values of the current column are added to 11 ( The average column value is calculated by dividing by 10 times the average + the current column data). The reason for the factor of 10 is to minimize the influence of the values of the current column and to weight the past data so as to give a weight. As a result, in the above equation (2), the weighting coefficients of the data for the past six times are all 10/66, and the weighting coefficients of the data of the current column are 1/11. A value relating to weighting such as a value of 10 can be arbitrarily determined by the designer, and can also be a value that can be set by the user from the user interface 27.

  Moreover, not only the example of the above equation (2), but each of the above-described average values is in the order of recording (that is, the order of indicating how many previous times the data is) or the elapsed time since recording It can be set as the average value weighted by the weighting coefficient according to. Also, unlike the example of equation (2) above, weighting coefficients can be determined so as to give more weight to newer data than older data. By adopting a weighted average, regardless of which one is given a weight, it is possible to reflect data regarded as important as the charging result in the charging result data as much as possible.

  Returning to the description of FIG. 6, the control unit 12 stores the value calculated in step S209 in the average row of the charging result table 30 (step S210), and ends the process. On the other hand, when data for the past six times does not exist (NO in step S208), the past data is shifted once by one, the current data is stored once in the previous row (step S211), and the process is ended. Such processing is performed because sufficient data are not available and are not suitable for the processing of the function A. However, based on an equation such as the above equation (2) but based on an equation that determines a weighting coefficient according to the number of times, even one data only after YES in step S102 of FIG. Processing can be performed. Further, in FIG. 5, when it is determined that the battery is not fully charged in step S203 (in the case of NO), the control unit 12 stops the process of creating the charge result table 30 (step S212). This makes it possible to accumulate charge result data only when the full charge capacity is reached.

  As described above, in the present embodiment, the calculation unit 11 calculates the predicted connection time based on the constant current charge time indicated by the charge result when the secondary battery 21 is charged to the full charge capacity, and the control unit 12 The above criteria are determined in accordance with the predicted connection time and the constant current charge capacity indicated by the charge result when the secondary battery 21 is charged to the full charge capacity. Since the charging current parameter is set according to the reference determined based on the data when such full charge capacity is reached, the capacity deterioration of the secondary battery 21 occurs after the predicted connection time until the full charge capacity passes. The full charge capacity is reached regardless of the degree of progress.

  In addition to the effects of the first embodiment, in the electronic device that performs charge control to shift from constant current charge to constant voltage charge according to an increase in charge amount by such setting, a state in which a charger is further connected is provided. The time for which the fully charged state is maintained can be suppressed, and as a result, deterioration of the battery capacity can be further suppressed. The reason will be described. First, in general, in a secondary battery such as a lithium ion battery, at the beginning of charging from a discharged state, constant current charging is performed because the voltage is low, and the charge amount gradually increases, and the cell voltage becomes a specified value. When reached, constant voltage charging is performed and the amount of current is reduced so that the cell voltage does not exceed the specified value. Then, in the above operation example, the full charge capacity, the constant current charge capacity, and the constant current charge time are used for calculation of the charge current parameter in consideration of constant voltage charging, and the capacity deterioration of the secondary battery is obtained. Control based on the charging current. Therefore, in the above operation example, in the electronic device that performs charge control to shift from constant current charge to constant voltage charge according to the increase in charge amount, the maintenance time of the fully charged state can be further suppressed. . It should be noted that there is no limitation on control after becoming fully charged by the operation of function A, but the control unit 12 instructs the charge control unit 22 or the charge control unit 22 autonomously performs constant current charging control from constant current charging control. It is sufficient to shift to charging control.

  In addition, although the constant voltage charging time and the constant voltage charging capacity are stored in the charging result table 30 of FIG. 3, the constant current charging time and the constant current charging capacity are calculated and stored, whereby the function A is operated. The reference can also be determined with reference to constant current charge time and constant current charge capacity.

  In addition, as described above, the control unit 12 in the present embodiment determines the above-described reference according to the predicted connection time, the constant current charge capacity, and the current remaining battery capacity. The charging current parameter is set according to the reference determined based not only on the data at the time of reaching the full charge capacity but also on the current battery remaining amount, so that setting according to the current battery remaining amount can be made. In addition to the effect, it is possible to suppress the time for which the fully charged state is maintained while the charger is further connected, and as a result, it is possible to further suppress the deterioration of the capacity of the battery.

  Furthermore, in the preferred operation example described with reference to FIGS. 3 to 6 in the present embodiment, first, the charging result data as exemplified in the charging result table 30 is adopted. That is, the charge record data can include an average value for each of the full charge capacity, the connection time, the constant voltage charge capacity, and the constant voltage charge time. The average value is the average value per one full charge.

  Then, the calculation unit 11 in the above operation example has a value obtained by subtracting the average value of the constant voltage charge time from the average value of the connection time as the predicted connection time as in the denominator of equation (1) (that is, constant current charge Calculate the average value of time). Note that the calculated value here is the same as the average value of the subtracted values, and the same applies to other calculations. Further, the control unit 12 in the above operation example is, like the numerator of the equation (1), the average value of the constant voltage charge capacity and the current value of the constant voltage charge capacity from the average value of the full charge capacity Calculate the estimated charging capacity by subtracting the battery level. Then, the control unit 12 in the above operation example divides the predicted charge capacity by the predicted connection time as in the above equation (1), determines a reference according to the result, and sets the charge current parameter according to the reference . At the time of setting, as exemplified, the division value can be set to the current value as one of the charging current parameters, and if the current value meeting the division value can not be set, it is set to the current value closest to the division value do it.

  Such setting makes it possible to further suppress the maintenance time of the fully charged state as compared to the case where only the constant current charge capacity and the constant current charge time are used for calculating the charge current parameter. Further, with such setting, the same effect as in the case of using the average value of the constant current charge capacity and the constant current charge time described next for calculation of the charge current parameter can be obtained. That is, in the charging result table 30 of FIG. 3, the constant voltage charging time and the constant voltage charging capacity are stored and their average value is calculated and stored, but the constant current charging time and constant current charging capacity and their average values By calculating and storing, it is possible to determine the reference with reference to the average constant current charge time and the average constant current charge capacity at the time of operation of the function A.

  Also, in the charging result table 30 shown in FIG. 3, an example is given in which the value of the full charge capacity [mAh] is the same at all times, but this value decreases as the number of times of charging increases. Because of the effect of the first embodiment and the further effect of the second embodiment, the degree of this decrease may be small.

  Further, as exemplified in the user interface 27 and step S103 in FIG. 4, the electronic device 20 serving as the charge control target device includes a user operation unit that receives a user operation as to whether to set the charging current parameter, The apparatus 10 preferably determines whether to set the charging current parameter according to the user operation. This allows the user to select the charge control function and can control the time until the full charge in accordance with the user's intention.

Embodiment 3
<< Configuration example >>
The electronic device according to the third embodiment has the same configuration as the electronic device 20 according to the second embodiment, so the electronic device according to the third embodiment will be described as the electronic device 20. Hereinafter, a configuration example of the third embodiment will be described with reference to FIG. 7 together with FIG. 1 and FIG. 2 etc., focusing on differences from the second embodiment. FIG. 7 is a diagram showing an example of the charging result table stored in the third embodiment.

  The function (referred to as function A) shown in the operation example of the control device 10 according to the second embodiment is a function that performs charge control mainly on the assumption that the battery is fully charged. However, with this function A only, if the user starts charging from a state near full charge with a little schedule in the daytime, etc., charging will be completed if an event not expected by the user occurs. Even after being fully charged, the charger may be left connected to the electronic device 20. In consideration of such a situation, it is desirable to suppress the deterioration of the secondary battery 21 by keeping the full charge state while the charger is connected as low as possible. The control device 10 according to the third embodiment has a function (referred to as function B) therefor, and allows the user to select a desired function according to the scene (use environment).

  Specifically, the control unit 12 in the third embodiment sets the charging current parameter in accordance with the next user operation performed by the electronic device 20. The user operation here is setting of a charging current parameter (referred to as setting of function A) to charge over a predicted connection time with a constant current (referred to as setting of function B) and other setting of charging current parameter Refers to a user operation of selecting any one of a plurality of settings including at least Here, a case will be described as an example where the third option includes setting for charging with a normal charging current value.

  When the setting of the function A is selected by the user operation, the control unit 12 performs control as in steps S103 to S112 in FIG. 4 related to the function A. When the setting of function B is selected by the user operation, control unit 12 indicates the capacity indicated by the actual capacity of used capacity of secondary battery 21 from when secondary battery 21 is charged to the full charge capacity and then charging is started next. Set the charge current parameter to make constant current charge with default current value until you can ensure. The above-mentioned actual use capacity results are the actual results of the use capacity of the secondary battery 21 from the time of full charge to the next start of charge, after the secondary battery 21 is charged to the full charge capacity, then the charger is connected It refers to the capacity of the battery consumed by

  Then, after the capacity is secured, the control unit 12 sets the charging current parameter so as to perform constant current charging at a current value lower than the default current value. Here, the default current value is preferably a normal charging current value initially set in the electronic device 20 described in the second embodiment, but is not limited to this. Further, when the third option is selected, the control unit 12 performs control of charging with the normal charging current value described in step S112 of FIG. 4.

  An example of a table that can be used for such processing including setting of function B will be described. In this table, as in the charging result table 31 illustrated in FIG. 7, data indicating the used capacity performance from the time of full charge of the secondary battery 21 to the next start of charging in the charging result table 30 is added It is a thing. The row of the used capacity [mAh] is added to the charging result table 30 in the charging result table 31, and includes the past six times of the user (user), the present amount, and the average used capacity [mAh].

  Here, “the used capacity” for this time is consumed from the previous recording until the time when the AC adapter is connected again and charging is started (regardless of whether or not the connection is fully charged). Or the capacity consumed from the present recording to the time when the AC adapter is connected and charging is started (same as above). Therefore, for example, between the time when the data of the used capacity is stored in the charging result table 31 and the time when the data of the used capacity is stored next in the charging result table 31 are performed. There may be a charge that did not reach full charge.

  The charge result table 31 is updated at the time of full charge, and is re-saved by one shift, similarly to the charge result table 30. Also for the charging result table 31, for example, the number of times of management can be arbitrarily determined by the designer, or can be set to a value that can be set from the user interface 27, etc. The same application as the charging result table 30 is possible. Also, the value of the average column can be calculated using the above-mentioned equation (2).

<< Operation example >>
A preferred operation example of the electronic device 20 according to the present embodiment will be described with reference to FIG. FIG. 8 is a flowchart showing an example of a charge control method according to the third embodiment.

  In the electronic device 20, the control unit 12 of the control device 10 monitors the connection of the AC adapter as in step S101 of FIG. 4 (step S301). When the connection of the AC adapter is detected (in the case of YES in step S301), the control unit 12 refers to the charge result table 31 and determines whether or not there is a calculation result in the average column of the charge result table 31 Step S302).

  If there is a calculation result (YES in step S302), the control unit 12 determines whether the function A is enabled in the user interface 27, the function B is enabled, or the normal charging function is set (special function A) And B are made inactive (selected), and a selection operation from the user is awaited (step S303). When the function A is validated in step S303, the control unit 12 proceeds to step S104 in FIG. 4 in order to perform the charging method of the function A.

  When the function B is validated in step S303, the control unit 12 acquires the average used capacity [mAh] from the charge record table 31 (step S305), and charges with the initially set normal charge current value [mA]. The charge control unit 22 is controlled to start (step S306). The normal charging current value can be set, for example, between 1000 mA and 2000 mA.

  Next, the control unit 12 checks whether the average used capacity [mAh] acquired in step S305 has been charged while monitoring the remaining battery capacity [mAh] via the charge control unit 22 (step S307). . When the average used capacity [mAh] is reached (in the case of YES at step S307), control section 12 sets the constant current charge current value to be lower than the above-mentioned normal charge current value, for example 200 [mA], until full charge The charge control unit 22 is controlled to be charged (step S308).

  If there is no calculation result in step S302 (in the case of NO), the charge control unit 22 is controlled to start charging at the normal charging current value [mA] initially set in the electronic device 20 (step S309). When the normal charging function is selected without enabling any of functions A and B in step S303, or when a predetermined period (for example, 10 seconds) elapses without selecting either, the process proceeds to step S309 as well. , Charging at the normal charging current value is started.

  As described above, in the present embodiment, one of the plurality of charge control functions (including the function A and the function B) capable of suppressing the maintenance of the fully charged state in a state in which the charger is connected is charged to the user. Control functions can be selected. Therefore, according to the present embodiment, the effects of the first and second embodiments can be obtained, and the time until the full charge can be controlled in accordance with the user's intention more than the second embodiment. And, even when an event or the like not expected by the user occurs after the charger is connected by the function B in the present embodiment, not only the capacity for the user usually used can be secured but also charging Can extend the time it takes to be fully charged. Therefore, according to the present embodiment, even when the function B is operated, it is possible to suppress the time for which the fully charged state is maintained in the state in which the charger is connected. Deterioration can be suppressed.

Other Embodiments
[A]
In the first to third embodiments, the functions of the calculation unit 11 and the control unit 12 in the control device 10 have been described. For example, the control unit 12 is responsible for a part of the functions of the calculation unit 11 It is also possible that the calculation unit 11 bears a unit, as long as these functions can be realized as the control device 10.

[B]
In the second and third embodiments, an example in which the constant voltage charge control is performed has been described with regard to the subsequent control in the case where the function A is fully charged taking the predicted connection time. In practice, the charger may be connected longer than the predicted connection time since the user does not always take the same action. Therefore, although the control after the elapse of the predicted connection time is basically not limited by the operation of the function A in the first to third embodiments, the control unit 12 preferably performs control to stop the charging itself. However, when the charge control target device does not correspond to such control, the control unit 12 in the first to third embodiments may perform the constant voltage charge control described above or, for example, as illustrated in step S308 of FIG. Constant current charge control with a current value significantly smaller than the current value before the predicted connection time has elapsed. Further, as a result of performing the setting as illustrated in step S308 of FIG. 8 and performing the charging in the third embodiment, the same can be said for the control after the full charge.

[C]
In the third embodiment, as exemplified in the charging result table 31 of FIG. 7 and the processing (processing related to function B) of steps S305 to S308 of FIG. 8, the control device according to the following embodiment and the control device thereof It is also possible to employ electronic devices equipped with

  If it demonstrates with reference to FIG. 1, FIG. 2 etc., the control apparatus 10 which concerns on other embodiment [c] is provided with the calculation part 11 and the control part 12. In FIG. The calculation unit 11 calculates a predicted use capacity predicted to be consumed by the secondary battery 21 based on the use capacity result in the charge control target device (electronic device 20) having the rechargeable battery 21 that can be charged. Do. The above used capacity results are the results of the used capacity of the secondary battery 21 from when the secondary battery 21 is charged to the full charge capacity to the start of charging next, that is, the secondary battery 21 is charged to the full charge capacity It refers to the capacity of the battery consumed before and after the next connection of the charger. Further, the estimated used capacity is a capacity indicated by the used capacity record, and is a value exemplified by the average used capacity in the third embodiment. This predicted used capacity can also be a weighted average value according to the various examples described in the second embodiment.

  Then, when the charger is connected to the electronic device 20, the control unit 12 sets the charging current parameter so as to perform constant current charging with the default current value up to the estimated use capacity calculated by the calculation unit 11. Next, the control unit 12 sets the charging current parameter so as to charge the constant current at a current value lower than the default current value after securing the predicted used capacity. As described above, the control unit 12 determines the threshold value related to the capacity according to the used capacity result, and changes the charging current parameter so as to lower the current value when the current capacity exceeds the threshold value. Also in the present embodiment, as exemplified in step S103 of FIG. 4 in the second embodiment, it is also possible to determine whether to set the charging current parameter according to the user operation accepted by the user operation unit.

  As described above, according to the present embodiment, since the predicted charging capacity serving as a trigger for reducing the current value is determined based on the used capacity performance at the time of full charge, the same effect as the effect of the function B in the third embodiment Play. That is, according to the present embodiment, even when an event or the like not expected by the user occurs after the charger is connected, it is possible not only to secure the amount of capacity that the user normally uses, but also to charge. It is possible to extend the time when it is completed and fully charged. Therefore, according to the present embodiment, it is possible to suppress the time in which the fully charged state is maintained in the state where the charger is connected, and as a result, it is possible to suppress the deterioration of the battery.

[D]
The control device 10 according to the first to third embodiments may have the following hardware configuration. FIG. 9 is a diagram showing an example of the hardware configuration of the control device 10. As shown in FIG. The same applies to the other embodiments [a] to [c].

The control device 100 illustrated in FIG. 9 includes a processor 101 and a memory 102.
The calculation unit 11 and the control unit 12 in the control device 10 described in the first to third embodiments are realized by the processor 101 reading and executing a program (control program) stored in the memory 102. That is, the control program is a program for causing the processor 101 to function as the calculation unit 11 and the control unit 12 described above, and a program for causing the control device 10 to execute the processing in the calculation unit 11 and the control unit 12.

  In the above-mentioned example, the program can be stored using various types of non-transitory computer readable media and supplied to a computer. Non-transitory computer readable media include tangible storage media of various types. Examples of non-transitory computer readable media are magnetic recording media (eg flexible disk, magnetic tape, hard disk drive), magneto-optical recording media (eg magneto-optical disk), CD-ROM (Read Only Memory), CD-R, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)) are included. Also, the programs may be supplied to the computer by various types of transitory computer readable media. Examples of temporary computer readable media include electrical signals, light signals, and electromagnetic waves. The temporary computer readable medium can provide the program to the computer via a wired communication path such as electric wire and optical fiber, or a wireless communication path.

  In addition, although the second embodiment has been described in the second embodiment, in each embodiment, the memory 102 may store data indicating the charge record, and in the embodiment where the data indicating the used capacity record is required, the data may also be stored. it can. Although the memory 102 is described to be non-volatile, it may be volatile. In this case, for example, the control program is stored in the storage unit 26 of FIG. May expand the control program into the memory 102.

[E]
Furthermore, as the control procedure in the control device is described in the various embodiments described above, the present invention can also take the form of a control method that is executed by the control device.

  The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the scope of the present invention. Furthermore, the present invention may be implemented by appropriately combining the respective embodiments.

<Supplementary Note>
Some or all of the above embodiments may be described as in the following appendices, but is not limited to the following.

(Supplementary Note 1)
In a charge control target device having a chargeable battery, an estimated connection time predicted to be continuously connected to a charger is calculated based on the charge result when the battery is charged to the full charge capacity. A calculation unit,
When the battery is connected to the charge control target device, charging is performed when the battery is charged to a full charge capacity so that the estimated connection time calculated by the calculation unit is fully charged with a constant current. A controller configured to set the charge current parameter according to a standard determined based on the actual result;
Control device comprising:

(Supplementary Note 2)
The charge control target device is a device that performs control of charging the battery with a constant voltage after charging the battery with a constant current,
The calculation unit calculates the predicted connection time based on a constant current charge time, which is a charge time charged by a constant current, which is indicated by a charge result when the battery is charged to a full charge capacity,
The control unit is configured to set the reference according to the predicted connection time and a constant current charge capacity, which is a charge capacity charged with a constant current, indicated by the charge result when the battery is charged to the full charge capacity. decide,
The control device according to appendix 1.

(Supplementary Note 3)
The control unit determines the reference according to the predicted connection time, the constant current charge capacity, and the current remaining amount of battery.
The control device according to appendix 2.

(Supplementary Note 4)
The charge results are a full charge capacity, a connection time of the charger when charged to the full charge capacity, a constant voltage charge capacity which is a charge capacity charged with a constant voltage, and a charge time charged with a constant voltage Including the average value for each of the constant voltage charging times,
The calculation unit
The estimated connection time is calculated by subtracting the average value of the constant voltage charging time from the average value of the connection time,
The control unit
By subtracting the average value of the constant voltage charge capacity and the current battery residual capacity from the average value of the full charge capacity, a predicted charge capacity predicted to be charged before full charge is calculated;
The reference is determined according to a result of dividing the predicted charge capacity by the predicted connection time.
The control device according to appendix 3.

(Supplementary Note 5)
The average value of the full charge capacity, the average value of the connection time, the average value of the constant voltage charge capacity, and the average value of the constant voltage charge time are all in the order of recording or the elapsed time since recording. Is an average value weighted by a weighting factor according to
The control device according to appendix 4.

(Supplementary Note 6)
The control unit determines whether to set the charging current parameter according to a user operation performed on the charging control target device, whether to set the charging current parameter or not.
The control device according to any one of appendices 1 to 5.

(Appendix 7)
The control unit
A user operation performed by the charge control target device, wherein the setting of the charge current parameter according to the reference and the use capacity of the battery from when the battery is charged to the full charge capacity to when the charge is started next Setting the charging current parameter according to a user's operation of selecting any one of a plurality of settings including at least another setting of the charging current parameter according to the results of
If the other setting is selected, the charge current parameter is set so that constant current charging is performed with a default current value until the capacity indicated by the actual used capacity can be secured,
After the capacity is secured, the charging current parameter is set to perform constant current charging at a current value lower than the default current value,
The control device according to any one of appendices 1 to 5.

(Supplementary Note 8)
An electronic device that is a charge control target device including a chargeable battery,
The control device according to any one of appendices 1 to 7,
A storage unit that stores data indicating the charging performance;
A charge control unit that charges the battery with the charge current parameter set by the control device;
An electronic device comprising the

(Appendix 9)
A control method implemented by the controller,
In the charge control target device having a chargeable battery, based on the charge result when the battery is charged to the full charge capacity, the predicted connection time predicted that the charger is expected to be continuously connected is calculated ,
When a charger is connected to the charge control target device, based on the charge record when the battery is charged to the full charge capacity so that the calculated predicted connection time is fully charged with a constant current. Set the charge current parameter according to the determined criteria,
Control method.

(Supplementary Note 10)
In the charge control target device having a chargeable battery, based on the charge result when the battery is charged to the full charge capacity, the predicted connection time predicted that the charger is expected to be continuously connected is calculated ,
When a charger is connected to the charge control target device, based on the charge record when the battery is charged to the full charge capacity so that the calculated predicted connection time is fully charged with a constant current. Set the charge current parameter according to the determined criteria,
Control program for causing a control device to execute processing.

(Supplementary Note 11)
In the charge control target device having a chargeable battery, based on the used capacity record which is the result of the used capacity of the battery until the battery is charged to the full charge capacity and then the charging is started. A calculation unit that calculates a predicted usage capacity predicted to be consumed;
When a charger is connected to the charge control target device, a charging current parameter is set so that constant current charging is performed with the default current value up to the estimated used capacity calculated by the calculation unit, and the estimated used capacity is And a controller configured to set the charging current parameter such that constant current charging is performed at a current value lower than the default current value after securing the current value.
Control device comprising:

(Supplementary Note 12)
The calculation unit calculates an average value of the used capacity as the estimated used capacity.
The control device according to appendix 11.

(Supplementary Note 13)
The average value is an average value weighted by a weighting factor according to the order of recording or the elapsed time since recording.
The control device according to appendix 12.

(Supplementary Note 14)
The control unit determines whether to set the charging current parameter according to a user operation performed on the charging control target device, whether to set the charging current parameter or not.
The control device according to any one of appendices 11 to 13.

(Supplementary Note 15)
An electronic device that is a charge control target device including a chargeable battery,
The control device according to any one of appendices 11 to 14;
A storage unit that stores data indicating the used capacity record;
A charge control unit that charges the battery with the charge current parameter set by the control device;
An electronic device comprising the

(Supplementary Note 16)
A control method implemented by the controller,
In the charge control target device having a chargeable battery, based on the used capacity record which is the result of the used capacity of the battery until the battery is charged to the full charge capacity and then the charging is started. Calculate the expected usage capacity that is expected to be consumed,
When a charger is connected to the charge control target device, a charging current parameter is set so that constant current charging is performed with the default current value up to the calculated estimated usage capacity,
The charging current parameter is set such that constant current charging is performed at a current value lower than the default current value after the predicted use capacity is secured.
Control method.

(Supplementary Note 17)
In the charge control target device having a chargeable battery, based on the used capacity record which is the result of the used capacity of the battery until the battery is charged to the full charge capacity and then the charging is started. Calculate the expected usage capacity that is expected to be consumed,
When a charger is connected to the charge control target device, a charging current parameter is set so that constant current charging is performed with the default current value up to the calculated estimated usage capacity,
The charging current parameter is set such that constant current charging is performed at a current value lower than the default current value after the predicted use capacity is secured.
Control program for causing a control device to execute processing.

10, 100 control device 101 processor 102 memory 11 calculation unit 12 control unit 20 electronic equipment 21 secondary battery 22 charge control unit 23 charge interface 24 power supply circuit 25 communication unit 26 storage unit 27 user interface 30, 31 charge result table

Claims (10)

In a charge control target device having a chargeable battery, an estimated connection time predicted to be continuously connected to a charger is calculated based on the charge result when the battery is charged to the full charge capacity. A calculation unit,
When the battery is connected to the charge control target device, charging is performed when the battery is charged to a full charge capacity so that the estimated connection time calculated by the calculation unit is fully charged with a constant current. A controller configured to set the charge current parameter according to a standard determined based on the actual result;
Control device comprising: The charge control target device is a device that performs control of charging the battery with a constant voltage after charging the battery with a constant current,
The calculation unit calculates the predicted connection time based on a constant current charge time, which is a charge time charged by a constant current, which is indicated by a charge result when the battery is charged to a full charge capacity,
The control unit is configured to set the reference according to the predicted connection time and a constant current charge capacity, which is a charge capacity charged with a constant current, indicated by the charge result when the battery is charged to the full charge capacity. decide,
The control device according to claim 1. The control unit determines the reference according to the predicted connection time, the constant current charge capacity, and the current remaining amount of battery.
The control device according to claim 2. The charge results are a full charge capacity, a connection time of the charger when charged to the full charge capacity, a constant voltage charge capacity which is a charge capacity charged with a constant voltage, and a charge time charged with a constant voltage Including the average value for each of the constant voltage charging times,
The calculation unit
The estimated connection time is calculated by subtracting the average value of the constant voltage charging time from the average value of the connection time,
The control unit
By subtracting the average value of the constant voltage charge capacity and the current battery residual capacity from the average value of the full charge capacity, a predicted charge capacity predicted to be charged before full charge is calculated;
The reference is determined according to a result of dividing the predicted charge capacity by the predicted connection time.
The control device according to claim 3. The average value of the full charge capacity, the average value of the connection time, the average value of the constant voltage charge capacity, and the average value of the constant voltage charge time are all in the order of recording or the elapsed time since recording. Is an average value weighted by a weighting factor according to
The control device according to claim 4. The control unit determines whether to set the charging current parameter according to a user operation performed on the charging control target device, whether to set the charging current parameter or not.
The control device according to any one of claims 1 to 5. The control unit
It is a user operation performed by the charge control target device, which corresponds to the setting of the charge current parameter according to the reference and the result of the used capacity of the battery from the time of full charge to the next start of charge Setting the charge current parameter according to a user operation of selecting any one of a plurality of settings including at least another setting of the charge current parameter;
If the other setting is selected, the charge current parameter is set so that constant current charging is performed with a default current value until the capacity indicated by the actual used capacity can be secured,
After the capacity is secured, the charging current parameter is set to perform constant current charging at a current value lower than the default current value,
The control device according to any one of claims 1 to 5. An electronic device that is a charge control target device including a chargeable battery,
The control device according to any one of claims 1 to 7.
A storage unit that stores data indicating the charging performance;
A charge control unit that charges the battery with the charge current parameter set by the control device;
An electronic device comprising the A control method implemented by the controller,
In the charge control target device having a chargeable battery, based on the charge result when the battery is charged to the full charge capacity, the predicted connection time predicted that the charger is expected to be continuously connected is calculated ,
When a charger is connected to the charge control target device, based on the charge record when the battery is charged to the full charge capacity so that the calculated predicted connection time is fully charged with a constant current. Set the charge current parameter according to the determined criteria,
Control method. In the charge control target device having a chargeable battery, based on the charge result when the battery is charged to the full charge capacity, the predicted connection time predicted that the charger is expected to be continuously connected is calculated ,
When a charger is connected to the charge control target device, based on the charge record when the battery is charged to the full charge capacity so that the calculated predicted connection time is fully charged with a constant current. Set the charge current parameter according to the determined criteria,
Control program for causing a control device to execute processing.

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