JPH0641351U - Battery charging / discharging device for portable terminal device - Google Patents

Abstract

(57) [Summary] [Structure] This device includes a charging device 2, a discharging device 3, a voltage detecting device 4, a timer 5, a counter 6, an indicator 7, a buzzer 8,
And a charge / discharge control device 1. [Effect] The charging / discharging device can automatically manage the battery life,
Furthermore, since the indicator for battery replacement is displayed on the display, it is not necessary for a person to manage the battery life.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention maximizes the battery life by regularly charging and discharging the battery used in the portable terminal device, at the same time clearly indicating the battery life and automatically replacing the battery. The present invention relates to a battery charging / discharging system suitable for informing a portable terminal device.

[0002]

[Prior art]

 Conventionally, batteries that can be used while being repeatedly charged and discharged have been charged regardless of the remaining capacity of the battery. In addition, the battery life was judged by the fact that it would not be restored by charging.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional technology, since the remaining capacity of the battery to be charged is unknown, when the battery is used, the battery is charged regardless of the remaining capacity of the battery. As a result, the number of times of charging decreased due to the battery characteristics and the actual usable time per charge decreased. In addition, there is a problem in that the life of the battery must be managed by humans such that the battery is replaced by checking the number of times of repeated charge and discharge.

An object of the present invention is to provide a battery charging / discharging device for a portable terminal device, which can prolong the life of the battery.

[0005]

[Means for Solving the Problems]

 The purpose of the above is to provide a device for charging / discharging the battery and a timer and timer counter for inputting information from the voltage detection device that extracts the voltage of the battery and monitoring the time from the start of charging / discharging. It is achieved by providing an indicator for informing.

[0006]

The voltage input from the battery is measured by the voltage detection device. The charging / discharging control device stores the voltage of the battery used by the portable terminal device in advance and further stores the voltage characteristic data of the battery to switch between charging and discharging within a certain range. . Also, by monitoring the time from the start of charging and discharging, if the battery does not reach full charge after a certain period of time, it is judged that the battery has reached the end of its life, and a message to that effect is displayed.

[0007]

【Example】

 An embodiment of the present invention will be described below.

FIG. 1 shows the configuration of a charging / discharging device according to the present invention. This device includes a voltage detection device 4 for detecting the voltage of a battery to be mounted, a charging device 2 for charging the battery 9 based on information input from the voltage detection device 4, and a discharge device for discharging. It comprises a display 7 for controlling the discharging device 3 and displaying the control state thereof, and a charging / discharging control device for instructing the buzzer 8 to call for the completion of charging. The charging / discharging control device 1 has a power supply unit for operating the charging / discharging device, takes in the voltage of the battery from the voltage detection device 4, and determines whether the battery is charged or discharged by the judgment unit of the charging / discharging control device. It makes a judgment and gives a command to the charging device 2 and the discharging device 3.

The display device 7 is attached to a good visual location on the charging / discharging device, and displays the voltage of the installed battery, etc., and can display the charging / discharging state of the battery. It has become so.

The buzzer 8 is configured to give a sound when charging is completed in order to call out that charging is completed.

FIG. 2 shows a flow of processing for charging and discharging the mounted battery. The discharge characteristics of the battery are stored in advance in the storage unit on the charge / discharge control device, and the remaining capacity of the battery is detected by the voltage detection device. If the battery capacity is 70% or more, trickle charging is performed and 70% or less. In that case, after discharging, charging is performed. When the battery capacity is determined to be 70% or less by the voltage detection device, it is identified by the charging / discharging control device 1 as indicated by the solid line, and the discharging device 3 discharges the voltage of the battery 9 until the final discharging time. When the voltage detection device 4 detects that the capacity of the battery 9 has reached the time of the final discharge, the discharge is terminated and the charging is started. As for charging, as indicated by the dotted line, the voltage detecting device 4 identifies that the capacity of the battery 9 has reached the final discharging time, and the charging device 2 starts charging the battery 9 via the charging / discharging control device 1. . The battery 9 is switched to trickle charging when the battery capacity reaches 70%. The charge / discharge control device 1 displays the remaining capacity, discharge state, charge, and trickle charge / charge of the battery on the display 7. When the charging is completed, the buzzer 8 calls for the completion of charging.

FIG. 3 shows the flow of the method of displaying the battery life on the display.

The charging characteristics of the battery are stored in advance in a storage unit on the charge / discharge control device 1. After the charging / discharging of the battery is started, the voltage detecting device 4 constantly monitors the voltage value. The timer starts counting from the time when the control of the battery switches from discharging to charging, and measures the time until it reaches a certain voltage due to the charging characteristics of the battery. If the battery voltage is not reached, it is determined that the battery has reached the end of its life, a message to that effect is displayed on the display 7 and the charging is suspended.

According to the present embodiment, by providing the charge / discharge control device on the charge / discharge device, it is possible to automatically perform charge / discharge management of the battery and to clearly indicate the life of the battery.

[0015]

[Effect of device]

 According to the present invention, the most efficient repetition of charging and discharging of a battery can be achieved without human control. In addition, the life of the battery can be known visually.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a block diagram of a charging / discharging device method and a display method.

FIG. 3 is a block diagram of a battery life detection method.

[Explanation of symbols]

1 ... Charge / discharge control device, 2 ... Charging device, 3 ... Discharging device, 4
... voltage detection device, 5 ... timer, 6 ... counter, 7 ... indicator, 8 ... buzzer, 9 ... battery.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Fumio Yamaguchi 4-3 Kanda Surugadai, Chiyoda-ku, Tokyo Hitachi Techno Engineering Co., Ltd. (72) Masakazu Akiyama 1070 Ige, Katsuta-shi, Ibaraki Hitachi Ltd. Mito Plant Within

Claims (1)

[Scope of utility model registration request] 1. A charging / discharging device having a charging device for charging a battery and a discharging device for discharging, by providing a voltage detection device for detecting the voltage of the battery, the voltage value of the device is improved. Further control of charge and discharge, an indicator for displaying the remaining capacity of the battery, the life of the battery, and a discharge state, a buzzer for notifying the fully charged state of the battery, and measuring the time from the start of charging of the battery A battery charging / discharging device for a portable terminal device, comprising a timer and a timer counter, and a charging / discharging control device for controlling them.