KR20140111889A - Apparatus and method for elelctrical charging and discharging a battery to enhance the performance of it - Google Patents

Abstract

The present invention relates to a device (1000) to charge/discharge a battery, capable of recovering battery performance. The device comprises: an insulation transformer to charge/discharge (300) to transform commercial alternating current power supplied from the outside through a power input terminal (100) to power for charging/discharging a battery, and return electric energy of the battery to the outside through the power input terminal (100); an SCR driving unit (400) including a charging unit SCR element (410) to full-wave rectify the transformed alternating current power by the insulation transformer for charge/discharge (300) to be SCR phase controlled and then convert alternating current power during a single cycle to two pulse waveform power, and a discharging unit SCR element (420) to convert the electric energy of the battery to pulse waveform power by lowering potential of the battery in accordance to the phase timing of the alternating current power and provide the insulation transformer for charge/discharge (300) with the pulse waveform power; an SCR control unit (600) to control drive of the SCR driving unit (400); a setting operating unit (910) and a display unit (920) provided to respectively set and display a charge/discharge operation environments of the battery; a MiCOM (800) to measure a battery status by measuring and comparing the charging time and the discharging time of the battery; and a battery status information display unit (925) to receive battery status information from the MiCOM (800) to be displayed.

Description

TECHNICAL FIELD [0001] The present invention relates to a battery charge / discharge device for improving the performance of a battery, and a charge / discharge method for a battery using the same. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a battery charge / discharge device for improving the performance of a battery, and more particularly, to a battery charge / discharge device for improving performance of a battery by supplying a pulse current to an electrode plate of a secondary battery through SCR phase control to remove sulphate formed on the battery electrode plate The performance of the battery can be improved and the performance of the battery can be measured while charging / discharging the battery (battery). Also, it is easy to recover the electric energy charged in the battery at a desired current level during a desired time Discharge device of a battery and a method of charging and discharging a battery using the same.

BACKGROUND ART [0002] A secondary battery is widely used as a power supply in various fields requiring power such as an automobile battery, a ship battery, and a UPS battery.

The battery functions by repeatedly charging electrical energy into chemical energy and discharging chemical energy into electrical energy. Such a battery, however, has a long period of use, and its performance deteriorates.

The reason for discarding the performance of the battery is that the resistance of the inside of the battery is increased due to the sulfation phenomenon on the electrode plate of the battery. The sulfation phenomenon is caused by the sulphate sticking to the electrode plate during discharging during charging and discharging repeatedly Refers to a phenomenon in which the electrode plate is stuck to the electrode plate without being detached at the time of charging. As a result of this sulfurization phenomenon, an insulating film is formed on the electrode plate of the battery to block the path of the chemical reaction. Such an insulation function lowers the voltage capacity and specific gravity of the battery and makes the electrolyte ineffective and degrades the performance of the battery .

As a method for removing the sulfate which sticks to the electrode plate of the battery according to such a problem, Korean Patent Laid-Open Publication No. 10-2005-0057544 entitled "Device for removing lead sulfate film from lead acid battery" has been proposed.

The patent discloses that a pulse current having a short pulse width of less than 1 초 sec accompanied by a skin effect is output in order to remove a lead sulfate film formed on an electrode of a lead acid battery to intensively decompose the surface layer of the film to form a lead sulfate film So that it can be removed.

However, in the above-mentioned patent, since a separate oscillator, an amplifier, a waveform shaping circuit, a negative pulse current generator, and the like must be provided in order to make a short pulse width of less than 1 초 sec, the circuit configuration and operation are complicated, There is a problem.

On the other hand, Korean Patent Laid-Open No. 10-2006-0090939 entitled "Continuous Battery Regenerator and its Regeneration Method" has been proposed as another method for removing sulfate which sticks to the electrode plate of a battery. A 1200V to 1400V pulse is applied to the cathode electrode and the anode electrode, and the pulse application time is applied for 9 hours to remove the oxide film bound to the surface of the lead sulfate.

However, in the above-mentioned patent, since a pulse of high voltage must be applied to the battery electrode for a predetermined time, a pulse generating unit for generating a high-voltage pulse must be provided, and the voltage generated from the pulse generating unit must be converted into a direct current through the rectifying unit. There is a problem that the configuration and operation of the apparatus are complicated.

As an attempt to solve the problem of the conventional battery replay apparatus, the recharge apparatus of the battery of Patent Registration No. 10-0931510 filed by the inventor of the present invention has been proposed. In the rechargeable battery replay apparatus, The configuration and operation of the battery can be simplified and the power consumption can be reduced and the battery can be returned to the power construction without consuming the power discharged from the battery in the process of regenerating the battery. There is a problem in that the practicality is limited due to a problem that a method of recovering the battery to a desired current level during the discharging process of the battery and an appropriate means for performing the discharging are not provided and the surge voltage Can be placed directly on the SCR element driving section Structure and there is no adequate means to easily compare the state of the battery before and after the battery regeneration process. Therefore, it is necessary to rely on the technical judgment of the operator. If the operator does not have expert knowledge There is a problem that the possibility of judgment error can not be distributed.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a battery charging and discharging circuit, And to provide a battery charge / discharge device for improving the performance of the battery.

It is another object of the present invention to provide an apparatus and a method for setting an additional waiting time for allowing a battery to maintain a charged state after a battery reaches a predetermined charging voltage in a charging operation While providing a control structure for facilitating the setting of specific conditions, it is possible to provide a means capable of recovering to a desired current level during the discharging process of the battery, and also to provide a surge voltage that can occur during charging and discharging The present invention provides a structure for arranging the protection means other than the SCR element driving unit for ensuring the structural stability of the apparatus and also provides a structure in which the battery is provided with suitable means for simply comparing the state of the battery before and after the charging / And a discharge device.

It is still another object of the present invention to provide a power supply apparatus and a power supply apparatus capable of saving electric energy discharged from a battery in a process of discharging a battery, Which is capable of recovering electric energy from a battery.

According to an aspect of the present invention, there is provided a charging / discharging apparatus for a battery,

A device controlling transformer including a device control synchronous transformer for transforming the commercial AC power supplied from the power input terminal into a power source for driving control of components constituting the charge and discharge device;

A charging / discharging insulation transformer transforming the commercial AC power supplied from the outside through a power input terminal to a battery charging power source and returning the electric energy of the battery to the outside through a power input terminal;

A charging unit SCR element for full-wave rectifying the transformed AC power through the charging / discharging insulation transformer and then converting the AC power for one period into two pulse waveform power by SCR phase control, And a discharging portion SCR element which is provided to convert the electric energy of the storage battery into a pulse waveform power source so as to supply the charged energy to the charging / discharging insulating transformer;

A battery connection part connected to the battery to discharge the electric energy charged in the battery to the SCR driving part, and a battery connection part connected to the battery to discharge the electric energy charged in the battery to the SCR driving part, Wow;

An SCR control unit for controlling driving of the SCR driving unit;

A setting operation unit and a display unit provided to set and display the charging and discharging operation environment of the battery;

A voltage / current detecting unit measuring a voltage of the battery and measuring a current charged in the battery and discharged from the battery;

A microcomputer for controlling the operation of each of the components and measuring the state of the battery by measuring and comparing a charging time and a discharging time of the battery; And

And a battery state information display unit for receiving and displaying the battery state information from the microcomputer.

Here, the battery status information display unit may be additionally included in the display unit.

In addition, the SCR control unit,

A relay control unit for transmitting a contact signal to a selection switch connected to the SCR element of the SCR driving unit;

And a PWM comparator provided with a PWM comparator for controlling a width of a pulse signal generated in the relay control unit for gate control of the SCR element,

In order to provide the input signal of the PWM comparator of the PWM signal generator,

A PWM generator for generating a pulse signal from a synchronous signal of a commercial AC power source;

A timer for generating a timing signal from the clock signal, and a DAC converter for converting the digital pulse selection signal into an analog voltage signal; And

A voltage control unit for generating a reference signal (e.g., 2.56 V) of the PWM comparator from the timing signal output from the timer of the MCU and the pulse selection signal of the DAC converter.

The microcomputer includes a communication unit that communicates with an external device, a SCR control driver that transmits a code output and a control signal to the SCR control unit, a voltage detection input unit that receives a voltage signal from the voltage detection unit, A battery state checking unit for checking the state of the battery through charge / discharge time comparison and outputting the state to the battery state information display unit, and a battery state checking unit for controlling the operation of each component according to the setting condition by the setting operation unit And a central control unit configured to continue the charge / discharge operation for a further set time even if the set voltage is reached during the charge / discharge operation of the battery.

Here, the battery connecting section may include: an output switch provided as means for connecting the charging section SCR element and the discharging section SCR element; And an output terminal part connected to the battery terminal, and the output terminal part includes a battery connection connector, a terminal cable, a terminal clamp connected to the battery terminal, and an overcurrent shutoff switch for interrupting the overcurrent between the terminal and the output switch .

The charging / discharging insulation transformer may include a primary winding coil wound around a silicon steel plate forming a transformer core so as to absorb a surge voltage that may occur during charging and discharging of the secondary battery, and a saturation induction coil It is possible to overcome the limitations of the prior art charge / discharge device in which the reactor must be necessarily used in the SCR driving unit, and it is possible to prevent the trans- Provides the effect of preventing fire.

The charge / discharge device of a battery according to the present invention converts a commercial AC power source to a pulse power source through SCR phase control, and then supplies pulsed power to the electrode plate of the capacitor to remove sulphate formed on the battery electrode plate. The present invention provides a simple pulse width modulation circuit device for selecting a pulse width optimized during charging and discharging operations. Effect.

In the case of the battery charging and discharging apparatus according to the present invention, an additional waiting time for allowing the charging state to be maintained so that the voltage state can be stabilized after the battery reaches a predetermined charging voltage in the operation of charging the battery And provides an efficient means for easily determining the state of the battery from the result of the charging / discharging operation progress of the battery.

In the case of an insulating transformer having a silicon steel plate as a saturation inducer as a charging / discharging insulating transformer constituting a battery charging and discharging apparatus according to the present invention, it is possible to absorb a surge voltage that may occur during charging and discharging of a battery The present invention has an effect of preventing a fire which may be caused by overheating of a transformer while preventing trans-damages caused by an overcurrent as compared with a conventional apparatus using a separate reactor in an SCR driving unit.

Also, the battery charging and discharging apparatus according to the present invention can return power discharged from a battery to electric power construction, thereby saving electricity.

1A and 1B are perspective views of a battery charging and discharging apparatus according to the present invention.
FIG. 2 is a block diagram of a battery charging and discharging apparatus according to the present invention.
3 is an overall circuit diagram of a battery charging and discharging apparatus according to an embodiment of the present invention.
4 is a waveform diagram of a power source generated through an SCR driver according to an exemplary embodiment of the present invention.
5 is a block diagram of an SCR control unit according to an embodiment of the present invention.
6A and 6B are circuit diagrams of the main parts of an SCR control unit according to an embodiment of the present invention.
6C is a circuit diagram of a voltage detecting unit and a current detecting unit according to an embodiment of the present invention.
7 is a block diagram of a microcomputer according to an embodiment of the present invention.
8A and 8B are block diagrams showing a specific embodiment of a charging / discharging insulating transformer constituting a battery charge / discharge device according to the present invention.
9 is a flowchart illustrating a process of setting an operating environment of the battery charging and discharging apparatus according to the present invention.
10 is a flowchart illustrating an operation of the battery charging and discharging apparatus according to the present invention.

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

FIGS. 1A and 1B are perspective views of a battery charging and discharging apparatus according to a preferred embodiment of the present invention, and FIG. 2 is an overall block diagram of the battery charging and discharging apparatus.

As shown in FIGS. 1A and 1B and FIG. 2, a battery charge / discharge apparatus 1000 according to the present invention includes wheels and a fixed end for moving the apparatus on the lower surface of the body 10, And heat radiating plates for emitting heat generated internally are formed on both sides and the rear surface. A setting operation unit 910 and a display unit 920 for setting and displaying an operating environment are provided on an upper portion of the front surface of the body 10 and connected to a power cord supplied from the outside to the outside of the body 10 A commercial power connection terminal 110 and an input switch 120 constituting a power input terminal 100 (see FIG. 2), and an output terminal unit 520 for connection to a battery are detachably coupled to an electrode plate of a storage battery, An overcurrent shut-off switch 521 for shutting off the overcurrent between the output switch 510 and the terminal connecting cable 522, the terminal cable 523, and the terminal clamp 524 connected to the battery terminal, And an emergency switch 130 may be installed on the front surface of the body 10. [

Here, the overcurrent cut-off switch 521 and the output terminal 520 together with the output switch 510 constitute the battery connecting portion 500 as shown in FIG.

The power supplied through the power input terminal 100 and the insulated transformer 300 for charging / discharging the transformer is subjected to full-wave rectification and then converted into a pulse power through an SCR (Silicon Controlled Rectifier) phase control. Discharging operation of the accumulator so that the electric energy charged in the accumulator can be converted into a pulse power source and recovered can be recovered by supplying power to the accumulator through the output switch 510 constituting the output terminal unit 500, Respectively.

Hereinafter, a detailed configuration and operation of the battery charge / discharge circuit according to a preferred embodiment of the present invention will be described with reference to FIG. 2 to FIG.

The charge / discharge circuit includes a device controlling transformer (not shown) including a device controlling synchronous transformer 210 for transforming the commercial AC power supplied from the power input terminal 100 to a power source for driving control of components constituting the charge / 200); A charging / discharging insulating transformer 300 is provided for transforming the commercial AC power supplied from the outside through the power input terminal 100 to the battery charging power source and returning the electric energy of the battery to the outside through the power input terminal 100, Wow; A charging unit SCR element 410 for converting an alternating current power for one cycle into a single pulse waveform power by SCR phase control of the alternating power source transformed through the charging / discharging insulating transformer 300, And a discharging part SCR device 420 installed to convert the electric energy of the storage battery into a pulse waveform power source by lowering the potential of the storage battery to provide the charging / discharging insulating transformer 300. The SCR driving part 400 includes: ; So that the pulse power generated by the SCR driver 400 in contact with the electrode plate of the battery is supplied to the electrode plate of the battery to charge the battery and to discharge the electric energy charged in the battery to the SCR driver 400 A battery connection part 500 connected to the battery; An SCR control unit 600 for controlling the driving of the SCR driving unit 400; A voltage / current detector (700) for measuring a voltage of the battery and measuring a current discharged from the battery, the voltage being charged by the battery; And a microcomputer 800 for controlling the operation of each component and measuring the state of the battery by measuring and comparing the charging time and the discharging time of the battery.

The display unit 920 provided outside the body includes a battery state information display unit (not shown) for receiving and displaying the battery state information from the microcomputer 800, And a communication cable 950 for connecting the above-described microcomputer 800 inside the body and the display unit 920 outside the body are provided.

Here, the power input terminal 100 is a power input device that receives external AC 220 V, 60 Hz commercial AC power.

The apparatus control transformer 200 provided as a transformer for converting a commercial AC power supplied from the power input terminal 100 includes a power source for driving a microcomputer 800 of 12V, a voltage detector 710 of 5V, And a device control synchronous transformer 210 that performs a function of converting a driving power for various components such as a driving power source of the detecting unit 720. The driving power source is converted into a DC power source through a rectifying process and supplied to various circuits.

In addition, the charging / discharging insulating transformer 300 performs a function of converting the commercial AC power into a charging power for charging the battery. Thus, the commercial AC power is converted into an appropriate AC power according to the charging capacity of the battery And is supplied to the SCR driver 400.

The SCR driver 400 converts the AC power source (refer to FIG. 4A) converted through the charging / discharging insulating transformer 300 into a full wave rectification (see FIG. 4A) And supplies the converted power source signal to the output switch 510 of the battery connection unit 500. The power supply unit SCR 410 is also provided to lower the potential of the battery in accordance with the phase timing of the AC power source And a discharging part SCR element 420 installed to supply the electric energy of the battery through the output switch 510 of the battery connecting part 500 and convert it into a pulse waveform power source and provide it to the charging / discharging insulating transformer 300 .

A voltage detector 710 and a current detector 720 constituting the voltage / current detector 700 are provided on one side of the hinge and the SCR driver 400. The detected value is provided to the microcomputer 800 and is supplied to the SCR controller 600 ) Of the control data.

The SCR control unit 600 controls the charging unit SCR element 410 and the discharging unit SCR element 420 constituting the SCR driving unit 400, The SCR driving unit 400 selects only a part of the AC power according to the control of the SCR control unit 600 and converts it into a power source having a pulse waveform. Is generated.

5 is a block diagram of the SCR control unit according to the embodiment of the present invention, and FIGS. 6A and 6B are circuit diagrams of the main parts of the SCR control unit.

5, 6A, and 6B, the SCR control unit 600 includes a relay control unit 610 that transmits a contact signal to a selection switch 640 connected to the SCR element of the SCR driver 400; And a PWM signal generator 620 having a PWM (Pulse Width Modulation) comparator 622 provided to control the width of a pulse signal generated in the relay controller 610 for gate control of the SCR element A PWM generator 621 for forming a pulse signal from a synchronous signal of a commercial AC power source to provide an input signal of the PWM comparator 622 of the PWM signal generator 620; A timer 651 for generating a timing signal from the clock signal and a digital pulse selection signal (for example, 2 ¹² selection signals, which are provided so that phase control is possible by subdividing an AC waveform of one cycle into 1/2 ¹² ) (E.g., 12-bit) DAC converter 652 that converts the digital signal to an analog signal; And generates a reference signal (for example, 2.56 V) of the PWM comparator 652 from the timing signal PD7 output from the timer 651 of the MCU 650 and the pulse selection signal DA0 of the DAC converter 652 A voltage control unit 630 is provided.

Here, the MCU 650 is described as including a function corresponding to the timer 651 and the DAC converter 652. However, these functional units may be separately formed into different parts, and further, generally referred to as an MCU Other control functions (e.g., the SCR control driver 830 of the microcomputer 800, etc.) may be integrally formed on commercially available electronic components.

The pulse selection signal selects a waveform by an instruction from the SCR control driver 830 of the microcomputer 800. Accordingly, the size of the output power source can be easily adjusted by selecting the phase of the output waveform according to the setting of the microcomputer 800. The waveform selection of the output power source through the SCR phase control is a separate process for converting AC to DC It is possible to simplify the configuration of the circuit and to make it possible to select a finer pulse waveform. The pulse wave power source generated by the SCR driver 400 is supplied to the electrode plate of the battery through the output switch 510 and the like to vibrate the electrode plate to remove the sulfate formed on the electrode plate and dissolve the sulfate floating material The specific gravity of sulfuric acid in the rechargeable battery is returned to the original state, and the internal resistance of the battery is reduced, thereby improving the performance of the battery.

On the other hand, at the time of discharging the battery, the driving of the charging SCR element 410 corresponding to Q7 to Q11 shown in FIG. 3 is cut off, the discharging SCR element 420 corresponding to Q1 to Q6 is driven, The power source of the selected waveform is supplied to the charging / discharging insulating transformer 300 in response to the driving of the SCR element 420, and the power source supplied to the charging / discharging insulating transformer 300 is returned to the electric power construction. The pulse waveform at the time of driving the discharge SCR element 420 has a negative value which is opposite to the phase of the diagram of FIG. 4 (a) and FIG. 4 (b).

7 is a block diagram of a microcomputer according to an embodiment of the present invention.

As shown in FIG. 7, the microcomputer 800, which constitutes a preferred embodiment of the battery charging and discharging apparatus according to the present invention, includes a communication unit 820 for performing communication with an external device, A voltage detection input unit 840 receiving a voltage signal from the voltage detection unit 710 and a current detection input unit receiving a current signal from the current detection unit 720 A battery state checking unit 860 for checking the state of the battery through charging / discharging time comparison and outputting the state to the battery state information display unit 925, And a central control unit 810 configured to maintain the charge / discharge operation for a further set time even if the set voltage is reached during the charge / discharge operation of the battery, .

The central control unit 810 generates a control signal according to the setting condition according to the setting of the setting operation unit 910 and transmits the control signal to the SCR control unit 600 through the SCR control driving unit 830, Current signal input through the current detection unit 850 connected to the detection input unit 840 and the current detection unit 720 and displays the voltage / current signal on the display unit 910, and controls the operation of each component unit based on the voltage / current signal .

The setting operation unit 910 is an input device for setting the operating environment of the battery charging / discharging device, and includes an accumulator / charge selection button, an operation button, a stop button, a mode setting switch, a voltage setting switch, Respectively.

The display unit 920 is provided with an LCD window for displaying an operating environment recognized by the microcomputer 800 and a power lamp for displaying power, a charging lamp for indicating a charging state, and a discharge lamp for indicating a discharging state And a battery state information display unit 925 for checking the state of the battery through charging / discharging time comparison and outputting the state is further provided.

The current detector 720 having an exemplary circuit configuration as shown in FIG. 6C is installed in series between the SCR driver 400 and the output switch 510 as shown in FIG. 7 to detect the current of the battery The voltage detector 710 having a circuit configuration as shown in FIG. 6C is a current detection circuit that transmits the current detection signal to the current detection input unit 850 of the microcomputer 800. The voltage detection unit 710 includes an SCR driver 400 and an output switch 510 to detect a voltage and transmit the detected voltage to the voltage detection input unit 840 of the microcomputer 800.

8A and 8B are detailed configuration diagrams of the charging / discharging insulating transformer 300 according to the embodiment of the present invention.

A charging / discharging insulating transformer 300 constituting a preferred embodiment of the battery charge / discharge device according to the present invention is provided with a primary winding coil 310 wound around a silicon steel plate 330 forming a transformer core, And a silicon steel plate 340 is additionally provided as a saturation inducer between the winding coils 320 so as to absorb a surge voltage that may occur during charging and discharging of the battery, It is possible to prevent the transformer damage and fire caused by the overcurrent.

Hereinafter, the operation of the battery charge / discharge device for improving the performance of the battery constructed as described above with reference to the flowcharts of FIGS. 9 and 10 will be described.

9 is a flowchart illustrating a presetting process of the battery charging and discharging apparatus according to the embodiment of the present invention.

When the power is supplied to the battery charging and discharging device in step S100 and the system is turned on in step S100, the voltage of the connected battery is displayed through the display part 920 (S200).

In step S320, the current time is checked through the display unit 920 and the current time is set in step S330 through the setting operation unit 910 when the current time does not match. .

Next, a mode setting step S400 for the charging / discharging operation mode of five modes, for example, is performed through the setting operation unit 910. After the voltage setting and the current setting step S500 are performed for each mode, Step S600 is performed.

If the mode-specific setting step S400 is completed first, the process goes to operation S800 after confirming whether the resetting is performed (S700).

Hereinafter, the operation of the battery charging and discharging apparatus according to the embodiment of the present invention shown in FIG. 10 will be described with reference to the flowchart of FIG.

When the microcomputer 800 receives an operation command (S900), it fetches a setting mode value for each setting mode (S1000), and compares the fetched mode value and the measured battery value to select a charging or discharging operation A charging step S1210 for charging according to the drawn mode value, a charging step S1215 for measuring the charging current, the charging voltage and the charging time, or the discharging step for discharging according to the drawn mode value S1220) and the step of measuring the discharge current, the discharge voltage and the discharge time (S1225).

When the set voltage reaches the set voltage (S1300) during this operation and the additional set time set in advance reaches the additional set time (S1400), the battery condition check unit 860 of the microcomputer 800 checks The battery state is measured through comparison of the discharge time and the charge time, and the result is output through the battery state information display unit 925 of the display unit 920 (S1500). Then, the charge / discharge operation is terminated (S1600) do.

During the discharge of the battery, the electric energy discharged from the battery is supplied to the power input terminal 100 to improve the power efficiency.

Hereinafter, an example of charging / discharging a single battery using the battery charge / discharge device and the charge / discharge method according to the present invention will be described.

For example, when a battery (voltage of 15 V) having an output of 100 A (amperes) and a voltage of 12 V (voltage of 15 V) is discharged in a voltage state of 10 V and a long time has elapsed so that the temperature of the present battery is in a cold state, Charge / discharge can be performed while verifying the performance of the battery by setting charging / discharging setting conditions. In the fast charging mode of the first mode, a current (30A) exceeding a proper charging current (for example, 10A) (1 hour) at a charge current (10A) appropriate to the rating of the battery in the stable charge mode of the second mode, and in the stabilization mode of the remaining third mode, The charging is continued for a further set time so as to reach the buffering voltage of 15V. In addition, in the discharge test mode of the fourth mode, the time (discharge time) required for the constant voltage drop while checking the voltage drop while advancing the battery discharge for a predetermined time (10 minutes) It is possible to obtain the state information of the battery by comparing the time (charge time) required for the constant voltage rise of the battery 920 and output it through the battery state information display unit 925 of the display unit 920. In addition, The charging and discharging operation can be terminated while reaching the maximum stabilized charging voltage by charging the additional set time set in advance.

mode Set voltage Set current Set time Remarks The first mode 13.5V 30A 30 minutes charge The second mode 13.5V 10A 1 hours Charging (voltage rise check: charge time check) Third mode 15V 1A 1 hours Charging (additional set time) Fourth mode  - (0V) 10A 10 minutes Discharge (voltage drop check: discharge time check) Fifth mode 15V 1A 30 minutes Charging (additional set time): Exit

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. The form also belongs to the scope of the present invention.

1000: Battery charge / discharge device 100: Power input terminal
200: Transformer for device control 300: Isolation transformer for charge / discharge
400: SCR driver 510: output switch
520: output terminal part 600: SCR control part
700: voltage / current detection unit 800: microcomputer
910: setting operation unit 920:
925: Battery status information display section

Claims (6)

In the charge / discharge device 1000 for a battery,
A device controlling transformer 200 including a device control synchronous transformer 210 for transforming a commercial AC power supplied from a power input terminal 100 into a power source for driving control of components constituting the charging and discharging device;
A charging / discharging insulating transformer 300 is provided for transforming the commercial AC power supplied from the outside through the power input terminal 100 to the battery charging power source and returning the electric energy of the battery to the outside through the power input terminal 100, Wow;
A charging section SCR element 410 for full-wave rectifying the alternating-current power source transformed through the charging / discharging insulating transformer 300 and then performing SCR phase control to convert the alternating-current power for one period into two pulse-wave power sources, And a discharging part SCR element 420 installed to convert the electric energy of the battery into a pulse waveform power source by lowering the potential of the battery in accordance with the phase timing of the charging / discharging insulating transformer 300, (400);
So that the pulse power generated by the SCR driver 400 in contact with the electrode plate of the battery is supplied to the electrode plate of the battery to charge the battery and to discharge the electric energy charged in the battery to the SCR driver 400 A battery connection part 500 connected to the battery;
An SCR control unit 600 for controlling the driving of the SCR driving unit 400;
A setting operation unit 910 and a display unit 920 provided to set and display the charging and discharging operation environment of the battery;
A voltage / current detector (700) for measuring a voltage of the battery and measuring a current discharged from the battery, the voltage being charged by the battery;
A microcomputer 800 for controlling the operation of each of the components and measuring the state of the battery by measuring and comparing the charging time and the discharging time of the battery; And
And a battery status information display unit (925) for receiving and displaying the battery status information from the microcomputer (800). The method according to claim 1,
The SCR control unit 600,
A relay controller 610 for transmitting a contact signal to the selection switch 640 connected to the SCR element of the SCR driver 400;
And a PWM signal generator (620) having a PWM comparator (622) provided to control the width of a pulse signal generated in the relay controller (610) for gate control of the SCR element,
In order to provide the input signal of the PWM comparator 622 of the PWM signal generator 620,
A PWM generator 621 for forming a pulse signal from a synchronous signal of commercial AC power;
A MCU 650 comprising a timer 651 for generating a timing signal from a clock signal and a DAC converter 652 for converting a digital pulse selection signal to an analog voltage signal; And
A voltage control unit 630 for generating a reference signal of the PWM comparator 652 from the timing signal PD7 output from the timer 651 of the MCU 650 and the pulse selection signal DA0 of the DAC converter 652, Wherein the charge / discharge device is provided with a charge / discharge device for improving the performance of the battery. The microcomputer according to claim 2, wherein the microcomputer (800)
An SCR control driver 830 for transmitting a code output and a control signal to the SCR controller 600 and a voltage detection unit 710 for receiving a voltage signal from the voltage detector 710, A current detection input section 840 for receiving a current signal from the current detection section 720; a battery state monitoring section 840 for checking the state of the battery through charging / discharging time comparison and outputting the state to the battery state information display section 925; The controller 860 controls the operation of each constituent unit according to the setting conditions by the setting operation unit 910 and the charging / discharging operation is continued for the additional set time even if the set voltage is reached during the charge / And a central control unit (810) connected to the battery. The battery connector according to claim 1,
An output switch 510 provided as means for connecting the charging unit SCR device 410 and the discharging unit SCR device 420;
And an output terminal portion 520 connected to the battery terminal, and
The output terminal unit 520 includes a battery connection connector 522, a terminal cable 523, a terminal clamp 524 connected to the battery terminal, and an overcurrent shutoff switch (521) for charging the battery. 5. The method according to any one of claims 1 to 4,
The charging / discharging insulating transformer 300 includes a primary winding coil 310 wound around a silicon steel plate 330 forming a transformer core so as to absorb a surge voltage that may occur during charging and discharging of the secondary battery, And a silicon steel plate (340) is additionally provided as a saturation inducer between the winding coils (320). A method for charging / discharging a storage battery using a battery charge / discharge device for performance improvement of a battery according to any one of claims 1 to 4,
When power is supplied to the battery charge / discharge device and the system is turned on (S100)
The voltage of the connected battery is displayed through the display unit 920 (S200)
The current time setting step S310 is performed. First, the current time is confirmed through the display unit 920 in step S320. If the current time does not match, the current time is set through the setting operation unit 910,
A step S400 for setting a plurality of charging and discharging operation modes is performed through the setting operation unit 910. After the voltage setting and the current setting step S500 are performed for each mode, the waiting time setting step S600 is performed. And,
After step S700 of confirming whether or not to reset, the operation enters step S800, and then
When the microcomputer 800 receives an operation command (S900), it fetches a setting mode value for each setting mode (S1000)
The extracted mode value is compared with the measured battery value to select a charging or discharging operation (S1100)
A charging step S1210 for charging according to the drawn mode value, a step S1215 for measuring a charging current, a charging voltage and a charging time, a discharging step S1220 for discharging according to the drawn mode value, And a step S1225 of measuring the discharge voltage and the discharge time are performed,
The battery state checking unit 860 of the microcomputer 800 determines that the discharge time and the charging time have reached the set voltage (S1300). If the predetermined additional set time elapses from this time to reach the set voltage (S1300) (S1500) of measuring the state of the battery through time comparison and outputting the result through the battery state information display part 925 of the display part (920).

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