KR200302740Y1 - Portable charging system for unit cell - Google Patents

Abstract

The present invention relates to a charger for a small charging battery.

With the spread of digital cameras, radios, mp3 players, and the like, various rechargeable small batteries have been used, and various chargers for recharging them have been used at low cost.

These chargers do not completely consume the residual current due to the characteristics of the battery, and the final residual voltage is recognized as recharging is repeated, thereby lowering the charging voltage. In addition, the charging becomes unstable as several cells are simultaneously charged and some are discharged and some are overdischarged and mixed together.

The present invention provides a charger that combines the function of checking the remaining voltage of a small battery by the charger itself, the discharge function by the manual mode, and the discharge and charging by the automatic mode, and also the generation of a beep sound by the sound when the charging is completed. We have developed a charger that allows the battery to be fully recharged.

Description

Portable charging system for unit cell {Portable charging system for unit cell}

The present invention relates to a small battery charger for use in small appliances.

As various small appliances such as cassette players and mp3 players are widely used, rechargeable small batteries are widely used instead of disposable. If the rechargeable battery is not fully recharged, the performance will gradually deteriorate and the original function may not be used properly. In other words, the battery may not be used properly. Not only is this greatly shortened, but also the original performance of small appliances is often damaged.

Particularly, the placenta does not know when and how long it should discharge when the residual pressure is recharged on the battery after a certain use.

As a result, users often dispose of rechargeable batteries that are available for hundreds of times more than their intended life.

In order to remedy these shortcomings, the present inventors have developed a product for a small battery charger with an automatic charge / discharge function and a product having a charge / discharge function using only a low-cost OP amplifier and a transistor (Utility Model Registration Nos. 200175 and 185300). However, even with such a charge and discharge function, only a simple charge and discharge function is added, and only a user who has a certain level of understanding of the battery performance has virtually little use of the charge and discharge function. In addition, it is difficult to implement functions required by hardware control by these devices, and many disadvantages of inaccurate operation states according to device-specific characteristics such as Tr and resistance have occurred.

In order to solve the above-mentioned disadvantages of the users, the present invention makes it possible to visually check the inspection function of the existing voltage on the battery that needs to be charged so that anyone can easily understand whether the discharge is necessary and how much it is necessary to charge the battery. To provide a charger.

The present invention also provides a charger that can utilize the original function of the small battery by performing the optimum battery charging and discharge when the user selects the automatic charging and discharging function even if the user is a foreigner to the charging battery at all. In particular, the present invention is to provide a charger that can be reproduced as a battery that can maintain the best state by checking the remaining voltage to achieve the charge and discharge even when charging a plurality of cells together.

The present invention is to provide a charger to prevent overcharge by being able to identify by the appropriate sound sound and light when the charging is completed during automatic charging and discharging.

1 is a block diagram showing the overall configuration of the present invention,

2 is a flow chart for explaining the operation of the present invention.

<Explanation of symbols for the main parts of the drawings>

The present invention is a rectifying unit for obtaining a constant voltage from AC, a charging switch unit for supplying and blocking the rectified power, a charging unit to be charged through a plurality of small batteries, the discharge switch unit for discharging the charging battery and the Output unit for outputting after on / off control of one charge switch and discharge switch, battery status check, signal output for displaying current status, etc. by a predetermined program, input unit and central operation unit to receive necessary data and It consists of a central microprocessor composed of a memory unit, a visually identifiable naked eye display unit, a sound output unit, and a mode selection unit for mode selection.

Hereinafter, a detailed example of the present invention will be described with reference to the accompanying drawings.

The overall configuration of the present invention is shown in block diagram in Figure 1, Figure 2 is a program flow diagram in the microprocessor portion of the charger of the present invention.

The present invention is to rectify the AC voltage in the constant current unit (a) and output voltage control unit (2) for converting and outputting the appropriate output voltage by the control signal of the microprocessor unit,

An output switch unit 3 for switching the output supplied from the output voltage adjusting unit,

Battery charging unit (4) is charged by the voltage supplied from the output switch unit (3),

A microprocessor unit 5 for calculating and outputting control signals for the output switch unit, the discharge unit, the naked eye display unit, and the sound output unit of the charger according to the type and temperature of the battery and the selection mode of the mode selection unit;

In the case of a battery with a predetermined voltage or more remaining, the discharge unit (6) to enable the discharge to the battery by the control signal of the microprocessor,

A display unit 7 for visually identifying the characters and graphics required by the output signal of the microprocessor,

A sound display unit 8 for outputting a signal sound from a sound module by an output signal of a microprocessor;

And a mode selector 9 for manually selecting a manual mode, an automatic mode, and a battery type for the microprocessor.

In the present invention, the microprocessor unit waits for the battery check function and the automatic mode selection by manual selection (S1),

If the manual mode is selected in the above step, the battery inspection unit, the history inquiry, and the charge / discharge mode are selected according to the battery inspection, history inquiry, and charging / discharging modes. Outputting step (S2),

If the charging mode is selected in the above step proceeds to the charging step (S7), if the discharge step is selected, the step proceeds to the discharge step (S10) (S3)

When the automatic mode is selected in the step S1, the voltage of the output voltage adjusting unit 2 is detected, and the type of battery is input from the battery mounted on the battery charger 4 to determine whether it is in a normal state and different from the reference value. Outputting an error signal to the visual display unit 7 and the sound display unit 8 (S4),

When the normal signal is detected in the above step, checking the voltage of the mounted battery and comparing it with the reference voltage (S5),

If the reference voltage is higher than the step of outputting the on-signal to the discharge unit 6 to open the discharge circuit for a predetermined time (S6),

After the discharge time has elapsed, and the reference voltage value is lower than the reference voltage value, preliminary charging is performed to compare with the reference voltage value (S7).

If an error is detected differently from the reference voltage value, an error signal is output to the naked eye display unit and the sound display unit to display a battery abnormal state (S8).

In the above step, if the reference voltage value is higher than the step of continuously sensing the voltage to the battery charger 4 while outputting and charging the output signal to the output switch unit (3) (S9),

If the signal value detected from the battery charger in the above step is more than a predetermined reference value outputs an off signal to the output switch unit 3 to stop charging, and outputs the completion of the charge and the completion signal to the naked eye identification unit and sound display unit It consists of step S10.

When the user selects the battery test mode in the manual mode selection step (S2), the current voltage and current of the cell inserted into the battery charging unit 4 are measured, and the value measured from the corresponding cell is displayed on the naked eye display. In addition, the voltage and current value to be charged in the future to display (S2a).

In addition, if the history query mode is selected in the manual mode step, the memory unit is scanned in the memory unit to be stored for a predetermined period according to the user's selection to output the scanning result value to the naked eye display unit (S2b).

In addition, when the charge / discharge mode is selected in the manual mode step, if the charging mode is selected according to the selected mode, the process proceeds to step S9, and if the discharge mode is selected, the process proceeds to step S6 (S2c). In this case, when a plurality of cells are selected for charge / discharge selection, each cell can be independently selected to achieve independent charge / discharge.

This paper can check the current voltage status before battery charging and check whether it is necessary for charging, thus preventing uneven charging caused by charging several at once.

In addition, since all the information on the charge is displayed on the display device such as a liquid crystal that can be visually identified, accurate management and charging is possible even for women and children who have no electrical knowledge by accurately understanding the voltage and current state of the battery before and after charging.

In addition, automatic charging and discharging of the whole process can be performed sequentially by the automatic mode as well as the mode selection switch unit can be selected and used in the manual mode, so that separate over discharged or discharged ones can be separately performed. More precise and efficient charging is possible.

In addition, even if there are a large number of cells, charging and discharging proceeds with charging and discharging according to the remaining voltage and current of the corresponding cell, thereby achieving the best charging condition for the corresponding cell, thereby regenerating the best condition that the battery can exhibit after charging.

Claims (3)

An output voltage adjusting unit (2) which rectifies an AC voltage in the constant current unit (a) and converts the AC voltage into an appropriate output voltage according to a control signal of the microprocessor unit; An output switch unit 3 for switching the output supplied from the output voltage adjusting unit, Battery charging unit (4) is charged by the voltage supplied from the output switch unit (3), A microprocessor unit 5 for calculating and outputting control signals for the output switch unit, the discharge unit, the naked eye display unit, and the sound output unit of the charger according to the type and temperature of the battery and the selection mode of the mode selection unit; In the case of a battery with a predetermined voltage or more remaining, the discharge unit (6) to enable the discharge to the battery by the control signal of the microprocessor, A display unit 7 for visually identifying the characters and graphics required by the output signal of the microprocessor, A sound display unit 8 for outputting a signal sound from a sound module by an output signal of a microprocessor; And a mode selector (9) for manually selecting a manual mode, an automatic mode, and a battery type for a microprocessor. The method of claim 1, At step S1, the microprocessor waits for manual battery check and automatic mode selection by a user's selection. If the manual mode is selected in the above step, the battery inspection unit, the history inquiry, and the charge / discharge mode are selected according to the battery inspection, history inquiry, and charging / discharging modes. Outputting step (S2), If the charging mode is selected in the above step proceeds to the charging step (S7), if the discharge step is selected, the step proceeds to the discharge step (S10) (S3) When the automatic mode is selected in the step S1, the voltage of the output voltage adjusting unit 2 is detected, and the type of battery is input from the battery mounted on the battery charger 4 to determine whether it is in a normal state and different from the reference value. Outputting an error signal to the visual display unit 7 and the sound display unit 8 (S4), When the normal signal is detected in the above step, checking the voltage of the mounted battery and comparing it with the reference voltage (S5), If the reference voltage is higher than the step of outputting the on-signal to the discharge unit 6 to open the discharge circuit for a predetermined time (S6), After the discharge time has elapsed, and the reference voltage value is lower than the reference voltage value, preliminary charging is performed to compare with the reference voltage value (S7). If an error is detected differently from the reference voltage value, an error signal is output to the naked eye display unit and the sound display unit to display a battery abnormal state (S8). In the above step, if the reference voltage value is higher than the step of continuously sensing the voltage to the battery charger 4 while outputting and charging the output signal to the output switch unit (3) (S9), If the signal value detected from the battery charger in the above step is more than a predetermined reference value outputs an off signal to the output switch unit 3 to stop charging, and outputs the completion of the charge and the completion signal to the naked eye identification unit and sound display unit Small charging battery charger, characterized in that consisting of steps (S10). The method of claim 2 When the user selects the battery test mode in the manual mode selection step (S2), the current voltage and current of the cell inserted into the battery charging unit 4 are measured, and the value measured from the corresponding cell is displayed on the naked eye display. Step to display the voltage and current value to be charged in the future (S2a). If the history query mode is selected, scanning the memory unit and outputting a scanning result value to the naked eye display unit (S2b). If the charging and discharging mode is selected, the method proceeds to step S9 if the charging mode is selected according to the selected mode, and if the discharge mode is selected, the step S2c further comprises the step S2c. charger.