JPH07105982A - Charging device for portable terminal equipment - Google Patents

Abstract

PURPOSE:To provide a cordless telephone set which makes a refresh charge automatically at a proper date and time without imposing the user to take the memory effect in consideration and perform the charge by himself. CONSTITUTION:A RAM 4 keeps in memory the date and time which was set b the user and at which the refresh charge is to be started, and when a clock part 2 senses that the refresh start time is up, a charge/refresh control circuit 1 turns on a switch for refreshing 6. Thus the refresh takes place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device for a portable terminal having a refresh function for a secondary battery used in the portable terminal.

[0002]

2. Description of the Related Art Recently, as a typical portable terminal,
Corded telephones have been widely used due to their convenience such as a great degree of freedom in places where telephone conversations can be made, as compared with telephones having conventional cords.

This cordless telephone is a small power source,
It uses a secondary battery such as a nickel-cadmium battery or a nickel-hydrogen battery that is lightweight and has a large capacity for charging and can be charged any number of times.

However, it is known that such a secondary battery has a phenomenon called a memory effect.
The memory effect is that the apparent battery capacity decreases after several cycles when charging and discharging are repeated in a relatively high voltage region where the remaining battery level is sufficient. In other words, in a frequently used device such as a cordless telephone, the secondary battery is used while the secondary battery is used a little, that is, the battery is slightly discharged and then charged a few times. The capacity of the battery itself is not 100%, and as a result, the usable time of the telephone without charging is gradually shortened.

Refresh discharge is known as a method of removing such a memory effect, and this promotes recovery of battery performance by performing deep discharge once on a secondary battery. This is generally called refresh. However, it is also known that the life of the battery itself may be shortened if it is performed more than necessary because this refresh also repeats discharging and charging.

[0006]

By the way, in such a cordless telephone, the discharge of the secondary battery as well as the refresh discharge is placed in the charging device as needed. In this case, the phone will be set on the battery charger when no call is being made, but even if there is an incoming call to the phone in this state, if the battery is being charged and the battery capacity is not sufficient, receive the call. There was a problem that I could not do it. Therefore, in the past, the user considers the battery characteristics and manually charges and refreshes the secondary battery at an appropriate time, but this is very cumbersome for the user and refreshing is familiar to him. There is a problem that a user who does not have the battery does not refresh the battery or refreshes more times than necessary, which adversely affects the battery itself.

The present invention has been made in view of the above-mentioned circumstances, and a user can automatically perform refreshing at an appropriate date and time without performing refreshing in consideration of the memory effect of the secondary battery. It is an object of the present invention to provide a charging device for a mobile terminal, which can perform

[0008]

According to the present invention, there is provided a charging device for a portable terminal in which a portable terminal using a secondary battery as a power source is detachably provided, and a refresh start set for the secondary battery of the portable terminal. Storage means for storing time, clock means for detecting the refresh start time stored in the storage means, and refresh for refreshing the secondary battery of the portable terminal after waiting for the refresh start time detected by the clock means It is configured by means.

According to the present invention, there is provided a charging device for a portable terminal in which a portable terminal using a secondary battery as a power source is detachably provided, and a usage frequency detecting means for detecting a usage frequency of the portable terminal and the portable terminal. Storage means for storing the refresh period set for the next battery, clock means for detecting the refresh period stored in the storage means, and the detection result of the use frequency detection means for the refresh period detected by the clock means And a refresh start time zone detection means for detecting a time zone in which the frequency of use is low, and a refresh means for refreshing the secondary battery of the portable terminal in the time zone detected by the detection means.

[0010]

As a result, according to the present invention, in a charging device for a portable terminal in which a portable terminal using a secondary battery as a power source is detachably provided, a refresh start time set for the secondary battery is stored. Since the stored refresh start time is detected, and the secondary battery of the portable terminal is refreshed after waiting for the detected refresh start time, the refresh can be surely performed at the desired time.

According to the present invention, in a charging device for a portable terminal in which a portable terminal using a secondary battery as a power source is detachably provided, the frequency of use of the portable terminal is detected and the secondary battery of the portable terminal is detected. The set refresh period is stored, the stored refresh period is detected, a less frequently used time zone is detected from the detection result for the detected refresh period, and the mobile terminal is detected at the detected time zone. Since the secondary battery is refreshed, it is possible to perform refresh without fail by selecting a period when it is not used.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show an example in which the same embodiment is applied to a charging device for a cordless telephone. FIG. 1 is an external view showing a state in which a cordless telephone is set. Reference numeral 11 is a charging device main body, and a cordless telephone 12 is detachably set in the charging device main body 11.

FIG. 2 is an external view of the main body 11 of the charger. The main body 11 of the charger is a pedestal portion 111 on which the cordless telephone 12 is set, and the cordless telephone 12 is set on the pedestal 111. In this state, the terminal 112 that is electrically connected to the circuit inside the charger main body 11 and supplies power
a, 112b, 112c, a terminal 112d for transmitting / receiving a control signal between the charging device main body 11 and the cordless telephone 12,
A power supply cord 113 for supplying power from a power outlet to a circuit inside the charger main body 11, a spare battery charging unit 114 for accommodating and charging a spare battery for the secondary battery 9 used in the cordless telephone 12, and a cord. -LED for displaying charging of the secondary battery 9 with the dress telephone 12 set
115 and an LED 11 indicating that the spare battery is being charged
6, LED11 that indicates when the secondary battery is being refreshed
7. A refresh start switch 118 for manually starting the refresh, and a display panel (LCD or the like) 11 for displaying a message to the user.
9. It has a speaker 120 for generating an alarm sound.

FIG. 3 is an external view of the cordless telephone 12, which includes a transmitting section 121, a receiving section 122, a key input section 123 for inputting a telephone number, and a display section 124 for displaying various messages. Have

FIG. 4 shows a circuit configuration of such a charging device for a cordless telephone, which comprises a charging device main body 11 and a cordless telephone 12. In this case, the charging device main body 11 has a DC power supply 14 connected to a power supply code 113. This DC power supply 14 is used for the cordless telephone 12
It is used for charging the secondary battery 9 described later.

The charging / refreshing control circuit 1 is connected to the DC power supply 14, and both ends of the DC power supply 14 are connected to the connection terminals 112a and 112b. This charge /
The refresh control circuit 1 controls charging and refreshing of the secondary battery 9 of the cordless telephone 12.

The control output from the charging / refreshing control circuit 1 is applied to the charging switch 5 and the refreshing switch 6. In this case, a discharging resistor 7 is connected in series to the refreshing switch 6, and the refreshing switch 6 is connected to the charging switch 5.
Are connected in series. And these switches 5, 6
The series circuit of the discharge resistor 7 and the discharge resistor 7 is connected to the DC power source 14, and the connection point of the switches 5 and 6 is connected to the connection terminal 112c. Here, the charging switch 5 is in an ON state when the secondary battery 9 is being charged, is in an OFF state when not being charged, and the refreshing switch 6 is in an ON state when the secondary battery 9 is being refreshed and is OFF when not being refreshed. It is a state.

The charge / refresh control circuit 1 is also connected to the clock section 2, ROM 3, RAM 4, display section 13 and connection terminal 112d. Here, the clock unit 2
The date, the day of the week, and the time set in advance are detected. The ROM 3 stores a control program for the charge / refresh control circuit 1. The RAM 4 stores data such as a refresh start time set on the side of the cordless telephone 12 and a date, a day of the week, a time and the like indicating the usage status of the cordless telephone 12. The display unit 13 is the LED 11
5, 116, 117 and the display panel 119, the display is controlled based on the control signal from the charge / refresh control circuit 1. Further, the control signal is transmitted to and received from the cordless telephone 12 via the connection terminal 112d.

An attachment / detachment detector 8 is connected to the terminal voltages 112a and 112b. The attachment / detachment detection unit 8 detects a state in which the cordless telephone 12 is separated from the charging device main body 11, and outputs this detection signal to the charging / refresh control circuit 1.

On the other hand, the cordless telephone 12 has connection terminals 12a, 12b, 112c and 112d which are provided so as to be connectable to the connection terminals 112a, 112b, 112c and 112d. The connection terminals 12a and 12c are connected in common via the diodes 10 and 10 having the polarities shown in the figure, and the telephone body 15 is connected between the connection point and the connection terminal 12b.
Are connected. The telephone body 15 has various functions as a cordless telephone, and the data and the like from the telephone body 15 are connected to the connection terminals 12d and 112d.
To the charging / refreshing control circuit 1 via. Further, the secondary battery 9 is connected between the connection terminals 12b and 12c. The secondary battery 9 is used as a power source for the cordless telephone 12, and a nickel-cadmium battery, a nickel-hydrogen battery, or the like is used.

Next, the operation of the charging device constructed as above will be described. First, when the user sets the refresh date and time, the flow chart of FIG. 5 is executed. When the user sets the date and time from the numeric keypad 123 of the cordless telephone 21 in order to refresh (step 501), the set date and time data is the connection terminal 12.
RAM sent to the charging device main body 11 via the d and 112d.
Written to 4. After that, the clock unit 2 detects that the set date has come (step 502), and further detects that the set time of the day has come (step 5).
03), it is determined whether or not the secondary battery 9 is being charged (step 504). If the secondary battery 9 is being charged, the process ends without refreshing, and if not charging, refreshing is started (step 505).

FIG. 6 shows the operation procedure of the refresh function in step 505 of FIG. In this case, since the secondary battery 9 is not being charged, the charging switch 5 is off. Further, if the user is using a cordless telephone, the attachment / detachment detection unit 8 causes the cordless telephone to
When it is detected that the dress telephone 12 is detached from the charging device main body 11 (step 601), the display panel 119 of the charging device main body 11 displays “Telephone” until the cordless phone 12 is placed on the charging device main body 11. Please leave a message. ”, An alarm sound is output from the speaker 120 of the charging device main body 11 (step 602), and the process ends without refreshing.

The cordless telephone 12 is the main body 11 of the charging device.
If it is in the state (step 601), the charging / refresh control circuit 1 turns on the refresh switch 6
By setting to N, discharging of the secondary battery 9 is started (step 603), discharging is performed until it is detected by the charge / refresh control circuit 1 that the voltage is equal to or lower than a predetermined voltage (step 604), and then for refreshing. Switch 6 OF
When the charging switch 5 is set to F and the charging switch 5 is turned on, charging of the secondary battery 9 is started (step 605), and charging is performed until the charging / refresh control circuit 1 detects that the voltage becomes equal to or higher than a predetermined voltage ( In step 606), the charging switch 5 is turned off and the refreshing is completed.

While the secondary battery 9 in the refresh function is discharging (step 603), the charging switch 5 is off, but the cordless telephone 12 is supplied with power from the DC power supply 14 at the connection terminal 112a. , 12a, the incoming call waiting state of the cordless telephone device 12 is normally maintained.

It is known that the capacity characteristic of the secondary battery 9 is as shown in FIG. 10, and by utilizing such a characteristic, the user can temporarily refresh the secondary battery 9 for a long time. When the capacity of the secondary battery 9 becomes near the voltage value (3.35 V) at which the memory effect is lost due to the reason such as not performing the alarm, an alarm sound is output and the cordless telephone 1
When 2 is placed in the main body of the charging device 11, refreshing can be automatically performed. Further, when the secondary battery 9 in the cordless telephone 12 runs out of battery (3.25V or less), the display unit 119 of the cordless telephone 12 displays a dead battery, and the cordless telephone is displayed. It is also possible to operate the backup power supply provided in 12 and maintain normal operation until a backup secondary battery is provided.

Therefore, according to such an embodiment,
Since the secondary battery 9 of the dress telephone 12 is refreshed according to the date and time set by the user, the secondary battery 9 can be refreshed at an appropriate date and time desired by the user. You can refresh without considering the characteristics, do not refresh,
The problem that the battery itself is adversely affected by refreshing more than necessary is solved.

In the above description, the user himself / herself has set the date and time to set the timing for refreshing. However, if the frequency of use of the cordless telephone 12 of the user is recorded, the frequency of use is the highest. Select a small time zone and refresh automatically (for example, at midnight on the 20th of every month 3:
00-5: 00).

In this case, the user's cordless phone 12
When the refresh time zone is set automatically with the frequency of use recorded, the flow charts of FIGS.
Is executed.

In this case, the attachment / detachment detection unit 8 of the charging device body 11 causes the cordless telephone 12 to move to the charging device body 11.
Is detected (step 701),
The use start time is stored in the RAM 4 in the charging device main body 11 (step 702). When the cordless telephone 12 is placed on the charger main body 11, the attachment / detachment detection unit 8
Is detected (step 703), it is considered that the use of the cordless telephone 12 has been completed, and the date, the day of the week, and the time when the cordless telephone has been used are recorded in the RAM 4 in the charging device main body 11. (Step 704).

From this state, the cordless telephone 12 has a period (for example, every fifth day) for the user to refresh.
When the setting is input from the numeric keypad 123 of (step 80
1) The set date data is sent to the charging device main body 11 and written in the RAM 4. After that, when the clock unit 2 detects the set date (step 802), the charging / refreshing control circuit 1 determines that the time zone in which the cordless telephone 12 is used least frequently in the setting is RA.
It is calculated from the past record in M4 (step 803).
After that, when the clock unit 2 detects that the time period has come (step 804), it is determined whether the secondary battery 9 is being charged (step 805), and if it is being charged, refresh is performed. If not charging, refresh is started (step 806).

Since the subsequent refresh operation is the same as that described with reference to FIG. 6, the description thereof is omitted here. Therefore,
According to such an embodiment, when the secondary battery 9 of the cordless telephone 12 is refreshed, the frequency of use of the cordless telephone 12 by the user is recorded, and the time zone with the least frequency of use is selected and automatically selected. Since it is carried out periodically, it is possible to perform the refreshing periodically and in a time period when the cordless telephone 12 is not used, and it is possible to expect the same effect as that of the above-mentioned embodiment.

The present invention is not limited to the above-described embodiments, but can be modified and implemented as appropriate without departing from the scope of the invention.
For example, by detecting off-hook and on-hook of the cordless telephone, the time zone in which the cordless telephone is used can be detected and recorded on the cordless telephone side. FIG. 9 shows a usage time memory in that case.
The operation procedure in a function is shown. When it is detected that the user has pressed the call button to start a call (off-hook detection) (step 901), the use start time is stored in the RAM (not shown) in the cordless telephone (step 902). . When the call is ended and the pressing of the call button is detected (on-hook detection) (step 903), the date, the day of the week, and the time zone during which the call was made are recorded in the RAM of the cordless phone. (Step 904).

Further, in step 602 of the above-mentioned embodiment, the message when the cordless telephone 12 is not placed in the charger main body 11 at the refresh start time.
It is conceivable that the code display and the alarm sound output may be performed on the cordless telephone side. Further, the charging device according to the present invention can be applied not only to the cordless phone but also to an 8 mm camera or the like.

[0034]

According to the present invention, in a charging device for a portable terminal in which a portable terminal using a secondary battery as a power source is detachably provided, refreshing of the secondary battery is set for the secondary battery. Memorize the refresh start time,
A mobile terminal that detects the stored refresh start time and waits for the detected refresh start time to refresh the secondary battery, or detachably mounts a mobile terminal using a secondary battery as a power source. In the battery charger for use, the frequency of use of the mobile terminal is detected, the refresh period set for the secondary battery is stored, the stored refresh period is detected, and the detection result is detected for the detected refresh period. Since the time zone of low usage frequency is detected from the above, and the secondary battery is refreshed during this detected time zone, it is possible to perform refreshing at regular and appropriate dates and times.
For the user, the problem that the refresh can be performed without considering the battery characteristics, the refresh is not performed, or the refresh is performed more times than necessary, which adversely affects the secondary battery itself, is solved. It

Also, at the refresh start time, a message is displayed and an alarm sound is output when the portable terminal is not placed in the main body of the charging device, so that the user does not forget to regularly refresh. Further, during the refresh, the power supply to the mobile terminal is performed from the DC power source, so that the incoming waiting state of the mobile terminal is normally maintained.

[Brief description of drawings]

FIG. 1 is an external view of a cordless phone placed on a main body of a charging device according to an embodiment of the present invention.

FIG. 2 is an external view of a charging device body according to an embodiment.

FIG. 3 is an external view of a cordless phone according to an embodiment.

FIG. 4 is a circuit configuration diagram of a charging device for a cordless phone according to an embodiment.

FIG. 5 is a flowchart for explaining one embodiment.

FIG. 6 is a flowchart for explaining one embodiment.

FIG. 7 is a flowchart for explaining one embodiment.

FIG. 8 is a flowchart for explaining one embodiment.

FIG. 9 is a flowchart for explaining one embodiment.

FIG. 10 is a diagram showing a capacity curve of a secondary battery of one example.

[Explanation of symbols]

11 ... Charging device main body, 12 ... Cordless telephone, 111
... pedestal part, 112a ... connection terminal, 112b ... connection terminal,
112c ... connection terminal, 112d ... connection terminal, 113 ... power cord, 114 ... spare battery charger, 115 ... LED,
116 ... LED, 117 ... LED, 118 ... Refresh start switch, 119 ... Display unit, 120 ... Speech
F, 121 ... Transmitting section, 122 ... Ear receiving section, 123 ... Ten key section, 124 ... Display section, 1 ... Charging / refresh control circuit, 2 ... Clock section, 3 ... ROM, 4 ... RAM, 5 ... Charging switch , 6 ... Refresh switch, 7 ... Discharge resistance, 8 ... Attachment / detachment detector, 9 ... Secondary battery, 10 ... Dio-
12a ... Connection terminal, 12b ... Connection terminal, 12c ... Connection terminal, 12d ... Connection terminal, 13 ... Display unit, 14 ... Current power supply, 15 ... Telephone body.

Claims (2)

[Claims] 1. A charging device for a mobile terminal, in which a mobile terminal using a secondary battery as a power source is detachably provided, and storage means for storing a refresh start time set for the secondary battery of the mobile terminal, It is characterized by further comprising: clock means for detecting the refresh start time stored in the storage means; and refresh means for waiting for the refresh start time detected by the clock means to refresh the secondary battery of the portable terminal. And a charging device for mobile terminals. 2. A charging device for a mobile terminal, in which a mobile terminal using a secondary battery as a power source is detachably provided, usage frequency detecting means for detecting a usage frequency of the mobile terminal, and a secondary battery of the mobile terminal. Storage means for storing a refresh period set for the refresh period, clock means for detecting the refresh period stored in the storage means, and use of the refresh period detected by the clock means from the detection result of the use frequency detecting means. A mobile terminal comprising refresh start time zone detection means for detecting an infrequent time zone and refresh means for refreshing the secondary battery of the mobile terminal in the time zone detected by the detection means. Charging device.