KR101859336B1 - A charging, over-discharging, recycling apparatus for battery - Google Patents

Abstract

The present invention relates to an apparatus for charging, discharging and regenerating a battery, which can charge, discharge and regenerate a plurality of battery cells continuously at one time by using one apparatus. The present invention provides the apparatus for charging, discharging and regenerating a battery, comprising: a power supply unit; a discharging unit; a regenerating unit; a switch unit formed between a charging/discharging unit and the battery cells and getting the charging/discharging unit and the regeneration unit to be electrically connected or disconnected; and a control unit interlocking with the charging unit, the discharging unit, the regeneration unit and the switch unit to separate a first and a second terminal of the switch unit from each other at normal times or when the regeneration unit is operated and to make the first and the second terminal of the switch unit come into contact with each other when the charging/discharging unit is operated, thereby charging, discharging and regenerating the battery cell to be regenerated at one time in a state that the charging/discharging unit and the regeneration unit are electrically connected through the control unit to enhance workability and convenience; making a bypass unit bypass power when an abnormal state occurs while charging and discharging the battery cell to prevent damage to the corresponding cell; pressing the battery cell by using an actuator during discharging at high current to stably discharge the battery cell; and monitoring a state of each battery cell through the bypass unit to easily find a degraded battery cell even without a separate test of each battery cell such that workability can be enhanced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a charging, discharging and regenerating apparatus for a battery,

The present invention relates to a battery charging, discharging and regenerating apparatus capable of charging, discharging and regenerating a plurality of battery cells at a time while continuously using a single battery cell.

Generally, a battery utilizes a chemical action of an electric current, and makes it possible to use chemical energy as electrical energy. When the battery is discharged, the battery can be restored to its original function when it is charged. When a load is connected to the external electrode terminal of the battery, a chemical reaction occurs between the electrode plate and the electrolyte in the battery to generate a voltage.

Generally, batteries use dilute sulfuric acid as an electrolytic solution, pure lead as a positive electrode plate, and pure lead as a negative electrode plate.

In order to obtain a large electric energy as much as possible with a small volume, the battery is formed of a thin plate so that the contact area between the electrode plate and the electrolyte causing the chemical reaction becomes large, and a plurality of batteries are connected in parallel and the positive electrode plate and the negative electrode plate are arranged to face each other.

The reaction between the positive electrode and the negative electrode produces an insoluble PbSO ₄ that adheres to the two electrodes. When the battery discharges, sulfuric acid is consumed and water is produced. Since the density of water is lower than that of sulfuric acid, Density is checked and confirmed. When the battery is recharged, the electrode reaction is reversed.

However, if charging and discharging are repeated for a long period of time, the sulfate attached to the electrode plate stuck to the electrolyte membrane without being released during charging, which is referred to as sulfation phenomenon.

Such a sulfation phenomenon causes a problem of lowering the voltage, capacity and specific gravity of the battery because the passage of the electric reaction of the electrode plate is blocked to perform the insulation function.

In order to solve such a problem, conventionally, Korean Patent No. 10-1189122 (hereinafter referred to as "Patent Document 1") has been proposed.

The main control unit controls the main control unit to output a high frequency pulse signal to the charging unit. The main control unit controls the main control unit, A display unit for displaying information on charging or discharging of the battery and a user input unit for allowing a user to set a set value for charging or discharging the battery, The main unit converts the current delivered from the power unit into high frequency pulses and supplies the high frequency pulses to the battery. The main control unit determines whether the battery is discharged by the discharge unit according to an internal resistance value of the battery. , And measures the magnitude of the voltage or current supplied to the battery And a sub control unit for controlling the operation of the charging unit and the discharging unit based on the comparison result of the comparing unit.

(Patent Document 1) KR10-1189122 B1 Apparatus and method for simultaneously regenerating and charging a battery

The above-described Patent Document 1 is designed to remove sulfate attached to a battery electrode through a high-frequency current, but in order to remove the sulfate of the electrode, a high voltage power source must be applied to reduce the efficiency.

In order to solve the above problems, a charging, discharging and regenerating apparatus for a battery according to the present invention electrically separates a regenerating unit and a charging and discharging unit operating at a low voltage, Discharging and regenerating apparatus capable of increasing the convenience and efficiency of the work by carrying out work even when a large number of heavy battery cells are not moved because the work can be carried out through one equipment.

It is another object of the present invention to improve efficiency of work by charging, discharging, and regenerating a plurality of battery cells by a continuous operation through a bypass unit.

It is another object of the present invention to improve the workability by monitoring each battery cell through the bypass unit.

Disclosure of Invention Technical Problem [8] The present invention provides a battery charger that discharges and regenerates a plurality of battery cells to be regenerated in a state where the charging and discharging units are electrically connected to each other through a regenerator control unit, It is possible to obtain an effect that can be improved.

In addition, when the battery cell is short-circuited due to an overvoltage or a partial failure during charging and discharging of a plurality of battery cells, or when an overcurrent is generated, the bypass unit bypasses power to neighboring battery cells to prevent breakage of the cell.

Also, a plurality of first and second terminals of the switch unit for connecting the charge / discharge unit and the plurality of battery cells are formed in an inclined shape to prevent the occurrence of sparks due to dust or the like.

Particularly, it is possible to form an actuator capable of pressing a switch portion composed of a plurality of first and second terminals at a high pressure, so that a safe and efficient discharge can be performed.

In addition, since the status of each battery cell can be monitored through the bypass unit, it is possible to easily find a defective battery cell without testing each battery cell, which is a useful invention for improving workability.

1 is a block diagram of an apparatus for charging, discharging and regenerating a battery according to the present invention;
2 is a schematic view showing a switch unit in the present invention.

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

The present invention is for reproducing a plurality of battery cells 1 as shown in Fig.

To this end, the present invention is configured to be capable of charging, discharging, and regenerating a plurality of battery cells 1.

First, the power supply unit 10 is configured to supply normal power as shown in FIG. 1, and a detailed description thereof will be omitted.

Next, the charger 20 is configured to convert the current and the voltage capable of charging the plurality of battery cells 1.

Next, the discharger 30 is configured to completely discharge the plurality of battery cells 1.

Here, the discharge of the plurality of battery cells 1 must include a means for generating a high current as much as it should be performed using a high current within a predetermined time.

Next, the reproducing section 40 is a structure for reproducing a plurality of battery cells 1. [

More specifically, the regeneration unit 40 is configured to regenerate a plurality of battery cells 1 by removing sulfuric acid attached to the electrodes constituting the battery, although not shown in the drawing by applying a high voltage. (Not shown in the figure) must be included.

Next, the switch unit 50 is operated such that a plurality of first and second terminals 51 and 52 are driven by the actuator 53 between the charge and discharge units 20 and 30 and the plurality of battery cells 1 do.

That is, the first and second terminals 51 and 52 of the switch unit 50 are separated from each other at the time of reproduction of a plurality of battery cells 1 through the reproducing unit 40, do.

When the user charges and discharges a plurality of battery cells 1 through the charging unit 20 and the discharging unit 30, the control unit 60 controls the charging / discharging of any one of the first and second terminals 51 and 52 The first and second terminals 51 and 52 are actuated to contact the first and second terminals 51 and 52, respectively.

2, when the battery cells 1 are discharged, the first and second terminals 51 and 52 are pressed through the actuator 53 as shown in FIG. 2, The first and second terminals 51 and 52 must abut against each other with a very strong force.

If the pressing force is weakened and a part of the contact surface is dropped, arc discharge may occur due to high currents in the first and second terminals 51 and 52.

Therefore, although the actuator 53 described above is not particularly limited, it is preferable to use a cylinder or a motor capable of generating a force of about 100 kg.

Particularly, since the first and second terminals 51 and 52 are exposed to the outside, a large number of first and second terminals 51 and 52 can accumulate foreign substances such as dust, have.

Accordingly, in the present invention, when the first and second terminals 51 and 52 are formed, the inclination angle of the first and second terminals 51 and 52 is adjusted so that no foreign substances are present on the surfaces of the first and second terminals 51 and 52, You may.

The control unit 60 is configured to be powered by the power supply unit 10 and operate in conjunction with the charge and discharge units 20 and 30 and the regeneration unit 40. [

That is, the control unit 60 prevents the first and second terminals 51 and 52 of the switch unit 50 from being connected to each other during the operation of the reproducing unit 40, When the charging and discharging units 20 and 30 are operated in a state in which the reproducing unit 40 is not operated and the controller 60 controls the actuator 20 and 30 to be electrically connected to the actuator 40 53 are driven so that the first and second terminals 51, 52 are brought into contact with each other to be electrically connected.

Particularly, the control unit 60 detects the power source for driving the actuator 53 of the switch unit 50 and applies power to the charge and discharge units 20 and 30 only when the actuator 53 operates Respectively.

Meanwhile, in the present invention, a bypass unit 70 may be further included between the charge / discharge units 20 and 30 and the switch unit 50.

The bypass unit 70 is connected to one of the battery cells 1 and the neighboring battery cells 1 on a connection line connecting the charging unit 20 and the discharge unit 30 to the plurality of battery cells 1, The number of the bypass units 71 is equal to the number of the battery cells 1.

The bypass unit 70 can measure the voltage and current of the corresponding battery cell 1 in the bypass unit 71 as well as measure the voltage and current measured in any one of the battery cells 1, The power is supplied to the neighboring battery cell 1 by bypassing the power supply to the battery cell 1 to shut off the power supply to the battery cell 1, 40 are driven.

Particularly, the control unit 60 applies power to the charging unit 20, the discharging unit 30, and the reproducing unit 40 by receiving power from the power supply unit 10 described above, To control the elements.

That is, when the controller 60 recognizes that the current and voltage flowing into the corresponding battery cell 1 through the bypass unit 70 during charging and discharging of the battery cells 1 are out of the reference value, A signal can be transmitted to the power source 70 so that power is bypassed.

Hereinafter, a preferred embodiment of a charging, discharging and reproducing apparatus for a battery according to the present invention will be described.

First, the charging, discharging and regenerating apparatus 100 for a battery according to the present invention is configured such that the charging and discharging units 20 and 30 and the reproducing unit 40 are electrically connected through the control unit 60, By charging, discharging and regenerating a plurality of battery cells 1 through the present invention at once, it is not necessary to move the heavy battery cells 1, and workability and convenience can be improved.

That is, the normal charge / discharge units 20 and 30 are driven at a relatively low voltage of about 48 to 54 V when the total voltage of the battery cells 1, for example, 24 battery cells 1 of 2 V .

However, the regeneration unit 40 must apply a high voltage of about 1,000 V or more to remove the sulfuric acid attached to the electrodes of the battery cells 1.

If the charging and discharging units 20 and 30 are electrically connected to the reproducing unit 40 in a state in which the reproducing unit 40 is driven, the charging and discharging units 20, 30) can not withstand and is damaged.

In the present invention, when the switch unit 50 is formed between the charge and discharge units 20 and 30 and the plurality of battery cells 1 and the regeneration unit 40 operates normally, The first and second terminals 51 and 52 are separated from each other so that they are not electrically connected to each other so that the charging and discharging portions 20 and 30 are not affected even if the reproducing portion 40 is driven, And the reproducing unit 40 can be selectively used, so that workability and convenience can be improved.

When the charging and discharging units 20 and 30 are driven, the first and second terminals 51 and 52 are electrically connected by the actuator 53 to electrically charge and discharge the battery cell 1 .

On the other hand, the discharge of the plurality of battery cells 1 through the discharger 30 must discharge all the energy in the plurality of battery cells 1 within a predetermined time.

Accordingly, a high current is generated at the time of discharge. When the contact surfaces of the first and second terminals 51 and 52 are not completely in contact with each other, arc discharge occurs and a fire occurs.

Accordingly, in the present invention, the contact surfaces of the first and second terminals 51 and 52 can be completely brought into close contact with each other by using a cylinder or a motor capable of forming a high pressing force, So that it does not occur.

Moreover, the first and second terminals 51 and 52 of the switch unit 50 described above are formed in such a manner that the inclination angle is formed, thereby preventing the occurrence of sparks due to dust or the like.

In the present invention, only when it is determined that the power source for operating the actuator 53 of the switch unit 50 is applied and the operation of the actuator 53 is determined to be performed, the control unit 60 controls the charging and discharging unit 20 And 30, so that a safety accident can be prevented.

Meanwhile, in the present invention, charging, discharging and regenerating operations of a plurality of battery cells 1 can be continuously performed without interruption through the bypass unit 70, so that the operation time can be greatly shortened.

That is, in the present invention, the bypass unit 70 is disposed between any one of the battery cells 1 and the neighboring battery cell 1 to detect the current and voltage of any one of the battery cells 1 Of course, a plurality of bypass units 71 are provided which can cut off the power supplied to the battery cells 1 and bypass the battery cells 1 to other neighboring battery cells 1.

When the bypass unit 70 is short-circuited due to an overvoltage or a part of the fault in one of the battery cells 1 when the plurality of battery cells 1 are charged, or when the overcurrent flows, Power can be bypassed to the battery cell 1 to prevent the battery cell 1 from being damaged.

In addition, when a plurality of battery cells 1 are discharged, a plurality of battery cells 1 are sequentially discharged. At this time, when a battery cell 1 having already been discharged is detected, It is possible to increase the efficiency of the system.

Furthermore, since the plurality of bypass units 71 monitor the state of each battery cell 1, the present invention can easily select the battery cell 1 whose charge amount is insufficient.

Therefore, even if each battery cell 1 is not inspected, individual inspections can be performed, and an effect of improving workability can be obtained.

Although the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to the technicians of.

1: Battery cell
10: Power supply
20:
30: discharge unit
40:
50:
51: first terminal 52: second terminal 53: actuator
60:
70: Bypass section
71: Bypass unit
100: Battery charging, discharging and regenerating device

Claims (5)

A power supply unit (10) for supplying power to a plurality of battery cells (1);
A charging unit (20) for charging the plurality of battery cells (1);
A discharge unit 30 for discharging the plurality of battery cells 1;
A reproducing unit (40) for reproducing the plurality of battery cells (1);
The charging and discharging units 20 and 30 and the regenerating unit 40 are electrically connected to each other when the charging and discharging units 20 and 30 are connected to the battery cells 1, The first and second terminals 51 and 52 and the first and second terminals 51 and 52 are electrically connected to each other by the control unit 60 when the first and second terminals 51 and 52 are in contact with each other. A switch unit 50 configured to abut the first and second terminals 51 and 52 in a completely tight state with a strong force by using an actuator 53 composed of a controlled cylinder or motor;
The first and second terminals 51 and 52 of the switch unit 50 are interlocked with the charging unit 20, the discharging unit 30, the reproducing unit 40, and the switch unit 50, The first and second terminals 51 and 52 of the switch unit 50 are brought into contact with each other when the charge and discharge units 20 and 30 are operated, The power is supplied to the charge and discharge units 20 and 30 only when the power is supplied to the actuator 53. When the power is not applied to the actuator 53, And a control unit (60) which operates so as not to supply power to the discharge units (20, 30)
Discharge, and regeneration operations for a plurality of battery cells can be performed at a time.
The battery charging, discharging and regenerating apparatus according to claim 1, characterized in that the first and second terminals (51, 52) of the switch unit (50) are formed in an inclined shape.
delete delete The battery pack according to claim 1, wherein a current and a voltage in any one of the battery cells (1) are disposed between the charge and discharge units (20, 30) and the switch unit (50) And a plurality of bypass units 71 for supplying power to the neighboring battery cells 1 while bypassing the power supply by bypassing the power supplied to the battery cells 1, 70) for charging, discharging and regenerating the battery.

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