KR101147937B1 - Self healing battery and control method for the same, self healing battery system - Google Patents

Abstract

The present invention relates to a battery structure including a plurality of cells and a control method thereof. A self-healing battery system according to an embodiment of the present invention includes a battery including a plurality of cells, the switching unit corresponding to each of the plurality of cells, a sensing unit for sensing a state of the battery, the sensing unit The sensing unit is configured to detect a failed cell among a plurality of cells included in the battery by using the sensing information sensed by the controller, and to control a switching unit corresponding to the failed cell to form a current movement path bypassing the failed cell. It characterized in that it comprises a control unit.

Description

Self-healing battery and its control method, self-healing battery system {SELF HEALING BATTERY AND CONTROL METHOD FOR THE SAME, SELF HEALING BATTERY SYSTEM}

The present invention relates to a battery structure including a plurality of cells and a control method thereof.

Batteries are used as energy sources to power devices that require power in mobile environments.However, due to the electrochemical nonlinearity and instability of the batteries themselves, there is a risk of explosion due to battery overcharging or cell damage in harsh operating environments. Inherent.

In addition, due to the non-linear characteristics of discharge rate varying according to temperature and load conditions, various methods for securing battery stability through optimal charge / discharge amount, load characteristic monitoring, and battery thermal management have been attempted. Fundamental safety technology has not been proposed to date.

In particular, the loss of battery function due to the physical and electrochemical damage of battery cells in the electric propulsion system and the weapon system using the battery as a power, it causes a deadly operation in the military operation environment due to the operation and interruption of the load operation.

For all batteries currently being developed, the design structure of the battery cell damage is directly linked to battery malfunction and battery safety issues, which imposes very critical limitations on survivability and ongoing mission.

Therefore, in some cases, for the sake of battery safety and protection when the battery cell is damaged, the charging / discharging operation is interrupted by blocking the charging / discharging current by default, or by replacing the final battery pack by operating with the limited battery capacity deteriorated in case of emergency. have.

Therefore, there is a serious problem of stopping the battery operation until the battery replacement and inspection.

One object of the present invention is to provide a self-healing battery system and a control method thereof that can be continuously used in a battery including a plurality of cells, even if some cells fail.

A self-healing battery system according to an embodiment of the present invention includes a battery pack including a plurality of cells, the switching unit corresponding to each of the plurality of cells, a sensing unit for sensing the state of the battery pack, The sensing unit is configured to detect a failed cell among a plurality of cells included in the battery by using the sensing information sensed by the sensing unit, and a switching unit corresponding to the failed cell to form a current movement path bypassing the failed cell. It characterized in that it comprises a control unit for controlling.

The switching unit may include a first switch connected in series with any one of a positive electrode and a negative electrode of the cell, and a second switch connected in parallel with a path in which the cell and the first switch are connected in series. It is characterized by.

In one embodiment, if the faulty cell is detected by the detection unit, the control unit controls the switching unit corresponding to the faulty cell such that the first switch corresponding to the faulty cell is opened and the second switch is shorted. It is characterized by.

In an embodiment, the controller determines whether the first switch is in an open state so that the first and second switches are not shorted at the same time, and if the first switch is in the open state, shorting the second switch. It is characterized by.

The control unit may determine whether the second switch is in a short circuit state, and if the second switch is not in a short circuit state, as a result of the determination, the controller executes a preset emergency action routine.

In an embodiment, the sensing unit may further include an interface unit converting the sensing information into a signal recognizable by the detection unit, and transmitting the converted signal to the detection unit, wherein the detection unit uses the signal received from the interface to provide reference information. And detecting a failed cell based on the sensing information.

The control method of a self-recovery battery according to an embodiment of the present invention includes the steps of sensing the state of the plurality of cells, determining the failed cell of the plurality of cells by using the sensed sensing information and reference information. And controlling the switching unit corresponding to the failed cell so that a current movement path regretting the failed cell is formed based on the determination result.

The switching unit may include a first switch connected in series with any one of a positive electrode and a negative electrode of the cell, and a second switch connected in parallel with a path in which the cell and the first switch are connected in series. The first switch is short-circuited and the second switch is open before the failed cell is determined and the switching unit is controlled.

In an embodiment, the controlling of the switching unit may include opening a first switch corresponding to the failed cell, determining whether the first switch is opened, and if the first switch is opened, determining the second switch. The switch is characterized in that it comprises a short circuit.

In an exemplary embodiment, the controlling of the switching unit may include: measuring a voltage across a second switch connected in parallel with the failed cell in a state in which the second switch is short-circuited; and measuring the measured voltage as a second reference value. The method may further include a step of comparing with and, and as a result of the comparison, if the measured voltage is greater than the second reference value, the predetermined emergency action routine is executed.

In an exemplary embodiment, in the controlling of the switching unit, if the first switch is not opened, a predetermined emergency action routine is executed.

In an embodiment, the controlling of the switching unit may include opening a first switch corresponding to the failed cell, measuring a current flowing through the failed cell, and comparing the measured current with a first reference value. And, as a result of the comparison, if the measured current is less than the first reference value, the second switch is short-circuited, and if the measured current is greater than the first reference value, a predetermined emergency action routine is executed.

The controlling of the switching unit may further include measuring a current corresponding to the failed cell and comparing the measured current with a second reference value while the second switch is shorted. And, as a result of the comparison, if the measured current is less than the second reference value, the predetermined emergency action routine is executed.

The sensing may include sensing at least one of a voltage corresponding to each of the plurality of cells, a current, and a temperature of a battery pack.

A battery according to an embodiment of the present invention includes a switch including a plurality of battery cells, a first switch connected in series to each of the plurality of battery cells, and a second switch connected in parallel with a corresponding path of each of the plurality of cells. And a sensing unit configured to sense a plurality of battery cells and transmit the sensed information to an external device, wherein the switching unit is configured to generate the plurality of battery cells according to a control signal input from the external device based on the sensed sensing information. And control to form a current movement path bypassing at least one of the two battery cells.

In example embodiments, the plurality of battery cells may be connected in series through a first switch connected to each of the plurality of battery cells, and at least one cell of the plurality of battery cells may be connected to the first switch according to the control signal. Is opened, and the second switch is short-circuited to form a current movement path bypassing the at least one cell.

According to an embodiment of the present invention, a self-healing battery system and a control method thereof may sense a battery including a plurality of cells in real time, and if a failed cell is detected as a result of sensing, physically failing the failed cell in the battery system through a switching unit. By separating, the function of the lost battery can be restored.

In addition, the self-healing battery system and a control method thereof according to an embodiment of the present invention can be safely separated from the battery system by checking the short circuit or open state of the switching unit corresponding to the failed cell.

1 and 2 are block diagrams of a self-healing battery system according to an embodiment of the present invention.
3 is a conceptual diagram of a self-healing battery according to an embodiment of the present invention.
4 is a detailed conceptual view of a self-healing battery according to an embodiment of the present invention.
5 is a flowchart illustrating a control method of a self-healing battery system according to an embodiment of the present invention.
6 is a conceptual view illustrating a control method of a self-healing battery system according to an embodiment of the present invention.
7 is a flowchart illustrating a control method of a self-healing battery system according to another embodiment of the present invention.
8 is a conceptual diagram illustrating a method of measuring voltage or current.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. As the inventive concept allows for various changes and numerous modifications, particular embodiments will be illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Hereinafter, a self-healing battery system and a control method thereof according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 and 2 are block diagrams of a self-healing battery system according to an embodiment of the present invention.

The self-healing battery system senses a battery including a plurality of cells in real time, and when a sensing cell is detected as a result of the sensing, the switching unit may physically separate the failed cell from the battery system to restore the function of the lost battery. As can be seen, a detailed configuration thereof will be described with reference to FIG. 1.

Referring to FIG. 1, a self-healing battery system includes a self-healing battery 100 and a control device 200.

Here, as the self-recoverable battery 100 and the control device 200 can be separated from each other, the control device 200 may be provided to control the self-recoverable battery 100, the self-recoverable battery 100 In the system using) may include the configuration of the control device 200 as described above.

First, referring to the configuration of the self-healing battery 100, the self-healing battery 100 may include a battery pack 110, a sensing unit 120, and a switching unit 130.

The battery pack 110 includes a plurality of cells, each of which serves as an energy source and includes a positive electrode and a negative electrode. The plurality of cells may initially be connected in series.

The sensing unit 120 continuously senses at least one of current, temperature, and cell voltage of each of the cells included in the battery pack 110 or the battery pack at a real time or at a predetermined time interval. In addition, the sensing unit 120 may transmit the sensed information to the control device 200.

The switching unit 130 is provided in each of the plurality of cells, and the switching unit 130 includes all the unit cells in the battery pack 110 in which the cells are configured in series connection from 1 to n times, while the electrical and physical It is connected to have a structure that can be separated.

For example, the first switch of the switching unit 130 is connected in series between the negative electrode of the m-1th unit cell and the mth unit cell anode, and the second switch of the switching unit 130 is the m-1th unit. The n-th unit cell constituting the battery pack 110 may be connected in parallel to correspond to the negative electrode of the cell and the negative electrode of the m-th unit cell.

On the other hand, in the normal operation mode, the switching unit 130 is short-circuited the first switch for connecting each cell in series, the second switch connected in parallel to correspond to each cell is open.

In this manner, in the normal operation mode, only the first switch is short-circuited, and when any one cell fails, the switches of the switching unit 130 are opened or shorted based on a control signal applied from the control device 200.

That is, the switching unit 130 may serve to electrically and physically separate at least one cell of the plurality of cells from another cell.

The battery pack 110 and the switching unit 130 will be described in more detail with reference to FIGS. 3 and 4.

3 is a conceptual diagram of a self-recoverable battery according to an embodiment of the present invention, Figure 4 is a detailed conceptual diagram of a self-recoverable battery according to an embodiment of the present invention.

Referring to FIG. 3, the battery pack 110 includes cell 1 110a, cell 2 110b,. It is composed of a plurality of cells, such as cell n 110n. As illustrated, the switching unit 130 is connected to correspond to each of the plurality of cells.

That is, the first switching unit 130a is connected to the cell 1 110a, and the second switching unit 130b is connected to the cell 2 110b, respectively.

4, the connection between the cell and the switching unit will be described in more detail. As shown, the switching unit 130 includes first and second switches 130 ′ and 130 ″, and the first and second switches 130 ′ and 130 ″ are connected to each cell, respectively.

The first switch 130 ′ may be connected in series to any one of a positive electrode and a negative electrode of the cell, and the second switch 130 ″ may be connected in parallel on a path including the first switch 130 ′.

On the other hand, as described above, the self-healing battery 100 includes a battery pack 110, the sensing unit 120 and the switching unit 130, the battery pack 110 sensed from the sensing unit 120 Sensing information associated with is transmitted to the control device 200. The switching unit 130 controls the first and second switches included in the switching unit 130 based on a control signal applied from the control device 200.

That is, the control apparatus 200 determines whether there is a failed cell among a plurality of cells included in the battery pack 100 from the sensing information, and when the failed cell is determined, controlling the switch of the switching unit 130 corresponding thereto. The signal is transmitted to the self-healing battery 100.

Meanwhile, the control device 200 may include a control unit 210, an interface unit 220, and a detection unit 230, and may further include a signal processing unit 240 as shown in FIG. 2 according to a situation. Can be.

First, the controller 210 controls the overall operation of the control device 200 and the self-healing battery 100. In addition, the controller 210 generates a switching control signal based on the cell failure signal received from the detector 230 and transmits the generated switching control signal to the switching unit 130.

The interface unit 220 may be referred to as a 'sensor input detector', and converts a sensing signal corresponding to the sensing information transmitted from the sensing unit 120 into a signal that the detection unit 230 can recognize.

That is, the interface unit 220 serves as an interface for converting the sensing information from the sensing unit 120 into a language that the detection unit 230 can interpret.

The detection unit 230 may be referred to as a 'cell failure diagnosis unit', and based on sensing information regarding the battery pack 110 sensed by the sensing unit 120, a plurality of cells included in the battery pack 110 may be used. Detect faulty cells.

That is, the detector 230 compares the reference information and the sensing information with respect to each cell to determine a failed cell, and the detector 230 transmits information corresponding to the failed cell to the controller 210, and the controller 210. To take action on the failed cell.

Here, the reference information is information that is different for each battery characteristic, and serves as a reference for determining whether the battery operates in a normal range. Such reference information may be stored in advance in a memory (not shown), and the detector 230 may diagnose the failed cell among a plurality of cells included in the battery pack 110 with reference to the reference information and the sensing information. Can be.

On the other hand, the control unit 210 receives the information on the failed cell by the detector 230, and controls the switching operation of the switching unit 130 corresponding to the failed cell.

First, the control unit 210 transmits a control signal for opening the series switch corresponding to the failed cell to the switching unit 130 of the self-healing battery 100. That is, the controller 210 first cuts off the current flowing in the battery pack 110. When the voltage value corresponding to the failed cell is compared with the reference value, and a predetermined condition is satisfied, a control signal for shorting the parallel switch corresponding to the failed cell is transmitted to block the failed cell from other cells.

In addition, the controller 210 may short-circuit the parallel switch corresponding to the failed cell, thereby generating a current movement path that bypasses the failed cell so that current may flow continuously to other cells.

Therefore, by the parallel switch corresponding to the failed cell, the current can be restored to flow to the other plurality of cells included in the battery pack 100.

Meanwhile, as illustrated in FIG. 2, the signal processor 240 may collect information received from the detector 230 and the interface 220 and transmit the collected information to the controller 210.

In the above, the structures of the self-healing battery system and the self-healing battery have been described.

Hereinafter, a control method of a self-healing battery including a faulty cell, together with a control method of a self-healing battery system, will be described with reference to FIGS. 5, 6, and 7.

 5 is a flowchart illustrating a control method of a self-healing battery system according to an embodiment of the present invention, and FIG. 6 is a conceptual diagram illustrating a control method of a self-recoverable battery system according to an embodiment of the present invention. to be.

First, the sensing unit 120 (see FIG. 1 or FIG. 2) senses the states of a plurality of cells included in the battery pack 110 (see FIG. 1 or FIG. 2) (S100).

As described above, the sensing unit 120 senses at least one of a plurality of cell voltages and currents and temperatures of the battery packs.

Next, the detector 230 (refer to FIG. 1 or FIG. 2) performs a diagnosis on the failed cell from the sensing information and the reference information sensed by the sensing unit 120 (S200).

Here, as described above, the detector 230 has failed among a plurality of cells included in the battery pack 110 based on the sensing information and the reference information of the battery pack 110 sensed by the sensing unit 120. Detect the cell.

If there is a diagnosis or determination result (S300), a failure cell through the detection unit 230, the control unit 210 (see Fig. 1 or 2) opens a switch connected in series corresponding to the failure cell (S400). In this case, no current flows to other cells.

On the other hand, when the diagnosis or determination result (S300), the failure cell through the detection unit 230, the sensing unit 120 and the detection unit 230 continues to monitor a plurality of cells.

Referring to FIG. 6, FIG. 6 is an enlarged view of any one of a plurality of cells. As shown in FIG. 6A, when the first switch 130a of the cell 110 is shorted and the second switch 130b is opened, the cell 110 generally operates normally.

Here, the "normally operating" refers to a state in which a current flows in the cell 110 and the cell 110 can be charged or discharged.

On the other hand, if it is determined by the detector 230 that the cell 110 is a failed cell, the controller 210 opens the first switch 130a connected in series to the failed cell 110.

In addition, the controller 210 determines whether the first switch 130a of the failed cell 110 is completely opened (S500).

That is, the controller 210 measures the voltage of the failed cell including the first switch 300b to determine whether the first switch 130a of the failed cell 110 is completely opened, and measures the measured voltage as a first value. The comparison is made with a reference value (or the first reference voltage).

That is, the control unit 210 has a voltage with respect to one end of both ends of the first switch 130a that is not connected to the failed cell 110 and one end of both ends of the failed cell 110 that is not connected to the first switch 130a. Measure

       The first reference voltage is an open voltage between the corresponding fault cells 110a connected in series with the first switch 130a when the first switch 130a of the fault cell 110 is opened. It is calculated by considering voltage, current, and load characteristics that are connected to the battery pack in a circuit.

That is, the measured voltage of both ends of the failed cell including the first switch is measured as an open voltage when the cell voltage is measured when the first switch is short-circuited and when the first switch 130a is opened. The comparison of the voltage with the first reference value determines whether the first switch 130a is shorted or opened.

On the other hand, in step S500, as a result of the comparison, if the measured voltage of the faulty cell including the first switch is not within the first reference value range, it is determined that the first switch is not open and the controller 210 executes an emergency action routine. (S800).

An emergency action routine is executed when a failed cell is not completely disconnected from other cells, which can lead to a system failure, such as battery damage, to power off the system or to disconnect the battery from the system. Isolate from the system (eg power grid device, control device).

In operation S500, when the measured voltage of the failed cell including the first switch is within a range of the first reference value, the controller 210 short-circuits the second switch 130b (S600).

Next, the controller 210 determines whether the second switch 130b is completely shorted (S700).

The step S700 is to check whether the second switch 130b is completely shorted, and the controller 210 determines whether the voltage corresponding to the absolute value of the failed cell is smaller than the second reference value.

The second reference value is the minimum voltage value that can be measured when there is no resistance other than the parasitic resistance.

That is, when the absolute value of the voltage corresponding to the voltage of the failed cell is smaller than the second reference value, it may be confirmed that the second switch 130b is completely shorted.

Ideally, the voltage corresponding to the voltage in the failed cell is '0', but since the voltage drop occurs due to the parasitic resistance included in the conductive wire, the voltage corresponding to the failed cell can be measured.

The second reference value is an experimental value or can be changed according to the characteristics of the battery.

On the other hand, when the first switch 130a is opened, the position at which the voltage of the cell is measured is determined as shown in FIGS. 6B and 6C (see 300b). The location corresponding to the path to include.

On the other hand, if the absolute value of the voltage of the failed cell is less than the second reference value as a result of the determination in step S700, the control unit 210 returns to a normal battery management routine and performs a step S100 such as sensing a plurality of cells. .

In addition, the control unit 210 generates a current movement path bypassing the failed cell 110 by completely shorting the second switch through step S700 to generate a path through which current can continuously flow to other cells.

In operation S700, when the absolute value of the failed cell voltage is greater than the second reference value, the controller 210 executes an emergency action routine (S800).

As described above, the self-healing battery system according to the present invention prevents the first and second switches from being shorted at the same time by shorting the second switch after opening the first switch and confirming that the first switch is fully opened. can do.

In addition, the self-healing battery system in the present invention creates a current path to bypass the failed cell, allowing the battery to continue using other cells that can operate normally.

5 and 6, the voltage corresponding to the failed cell was measured to see whether the first and second switches normally operated according to the control signal.

Hereinafter, the current corresponding to the failed cell is measured to see whether the first and second switches normally operate according to the control signal.

7 is a flowchart illustrating a control method of a self-healing battery system according to another embodiment of the present invention.

First, the sensing unit 120 (see FIG. 1 or FIG. 2) senses the states of a plurality of cells included in the battery pack 110 (see FIG. 1 or FIG. 2) (A100).

Next, the detection unit 230 diagnoses whether there is a failed cell from the sensing information and the reference information (A200).

That is, the detector 230 (refer to FIG. 1 or FIG. 2) compares the sensing information sensed by the sensing unit 120 with the reference information.

As described above, the detector 230 detects a failed cell among a plurality of cells included in the battery pack 110 based on sensing information about the battery pack 110 sensed by the sensor 120. do.

The detector 230 compares the reference information and the sensing information with respect to each cell, and determines a cell having sensing information that does not correspond to the reference information.

When the diagnosis or determination result A300 is found through the detection unit 230, and there is a failed cell, the controller 210 (see FIG. 1 or FIG. 2) opens a switch connected in series corresponding to the failed cell (A400). In this case, no current flows to other cells.

On the other hand, when there is no diagnosis or determination result (A300), a failure cell through the detection unit 230, the sensing unit 120 and the detection unit 230 continues to monitor a plurality of cells.

On the other hand, if it is determined by the detector 230 that the cell 110 is a failed cell, the controller 210 opens the first switch 130a connected in series with the cell 110.

In addition, the controller 210 measures the current of the failed cell to determine whether the first switch 130a of the failed cell 110 is completely opened, and determines that the current of the failed cell is smaller than the first reference value (A500).

On the other hand, here, the current of the failed cell compared with the first reference value may be the absolute value of the current of the determined failed cell.

Here, the first reference value is a different value according to the characteristics of the battery, and when the current does not flow in the battery, the current measured in the lead is large. Ideally, in this case, the magnitude of the current is '0'.

That is, if the current of the failed cell is smaller than the first reference value, the failed cell is said to not flow current, which means that the first switch 130a is completely shut off.

On the other hand, in step A500, when it is determined that the current of the failed cell is greater than the first reference value, the controller 210 executes an emergency action routine (A800).

An emergency action routine is executed when a failed cell is not completely disconnected from other cells, which can lead to a system failure, such as battery damage, to power off the system or to disconnect the battery from the system. Disconnect from the system (eg control).

In operation A500, when it is determined that the current of the failed cell is smaller than the first reference value, the controller 210 short-circuits the second switch 130b (A600).

In addition, the controller 210 determines whether a current flowing in the second switch 130b is greater than a second reference value (A700).

The step A700 is to check whether the second switch 130b is completely shorted, and the second reference value may be the minimum current value when the current flows normally in the lead.

That is, when the current flowing through the second switch 130b is greater than the second reference value, it may be confirmed that the second switch 130b is completely shorted.

The second reference value is an experimental value or can be changed according to the characteristics of the battery.

On the other hand, when the first switch 130a is opened, the position at which the cell current is measured is between the conducting wires connected in series with the first switch, and when the second switch 130b is opened, the current of the cell is measured. The position is between the leads connected in series with the second switch.

On the other hand, if it is determined in step A700 that the current of the failed cell is greater than the second reference value, the control unit 210 returns to the normal battery management routine and performs step A100 such as sensing a plurality of cells.

In addition, the controller 210 generates a current movement path bypassing the failed cell 110 by completely shorting the second switch through step A700 to generate a path through which current can continuously flow to other cells.

In addition, when it is determined in step A700 that the current of the failed cell is smaller than the second reference value, the controller 210 executes an emergency action routine (A800).

As described above, the self-healing battery system according to the present invention prevents the first and second switches from being shorted at the same time by shorting the second switch after opening the first switch and confirming that the first switch is fully opened. can do.

In addition, the self-healing battery system in the present invention creates a current path to bypass the failed cell, allowing the battery to continue using other cells that can operate normally.

On the other hand, using a voltage or current, look at how to measure whether the switch is cut as follows. First, FIG. 7 illustrates a method of measuring whether a switch is cut off using a voltage or a current.

First, in order to measure whether the switch is cut off using a current, as illustrated in FIG. 7A, the current sensor 300a is connected between the conductive wires including the first switch 130a or the second switch 130b. After that, the current flowing through the cell must be measured.

In addition, in order to measure whether the switch is cut off using a voltage, as illustrated in FIG. 7B, the voltage sensor 300b may be connected in parallel with the conductive line including the first and second switches, or the cell 110 may be used. Must be connected in parallel.

As described above, the self-healing battery system and a control method thereof according to an embodiment of the present invention sense a battery including a plurality of cells in real time, and when a failed cell is detected as a result of sensing, the failed cell through a switching unit. By physically and safely separating the battery from the battery system, the function of the lost battery can be restored.

In addition, the self-healing battery system and a control method thereof according to an embodiment of the present invention can be safely separated from the battery system by checking the short circuit or open state of the switching unit corresponding to the failed cell.

100: self-healing battery 110: battery pack
120: sensing unit 130: switching unit
130a: first switch 130b: second switch
200: controller 210: controller
220: interface unit 230: detection unit
240: signal processor 300a: current sensor
300b: voltage sensor

Claims (16)

A battery pack including a plurality of cells and formed to have a switching unit corresponding to each of the plurality of cells;
A sensing unit configured to sense a state of the battery pack;
A detection unit configured to detect a failed cell among a plurality of cells included in the battery by using the sensing information sensed by the sensing unit; And
An interface unit converting the sensing information into a signal recognizable by the detector and transferring the converted signal to the detector; And
A control unit controlling a switching unit corresponding to the failed cell to form a current movement path bypassing the failed cell,
The detecting unit detects a failed cell based on the reference information and the sensing information. The method of claim 1,
The switching unit includes a first switch connected in series with any one of the positive electrode and the negative electrode of the cell;
And a second switch connected in parallel with a path in which the cell and the first switch are connected in series. 3. The apparatus of claim 2, wherein the control unit
When the faulty cell is detected by the detection unit, the first switch corresponding to the faulty cell is opened, and the second switch controls the switching unit corresponding to the faulty cell such that the second switch is short-circuited. . 4. The apparatus of claim 3, wherein the control unit
Determine whether the first switch is in an open state so that the first and second switches are not shorted at the same time,
And as a result of the determination, shorting the second switch if the first switch is in an open state. The method of claim 4, wherein the control unit
Determine whether the second switch is in a short circuit state,
And if it is determined that the second switch is not short-circuited, a predetermined emergency action routine is executed. delete In the control method of the self-recovery battery including a plurality of cells, and having a switching unit corresponding to each of the plurality of cells,
Sensing a state of the plurality of cells;
Determining a failed cell among the plurality of cells by using the sensed sensing information and reference information;
Based on the determination result, controlling the switching unit corresponding to the failed cell to form a current movement path regretting the failed cell;
And in the sensing step, sensing at least one of a voltage corresponding to each of the plurality of cells, a current, and a temperature of a battery pack. The method of claim 7, wherein
The switching unit includes a first switch connected in series with any one of the positive electrode and the negative electrode of the cell;
And a second switch connected in parallel with a path in which the cell and the first switch are connected in series, wherein the failed cell is determined, and before the switching unit is controlled, the first switch is shorted and the second switch is opened. Control method of a self-healing battery, characterized in that. The method of claim 8,
In the step of controlling the switching unit
Open a first switch corresponding to the failed cell, determine whether the first switch is open,
If it is determined that the first switch is open, the second switch is a short-circuit control method comprising a short circuit. 10. The method of claim 9,
In the step of controlling the switching unit
Measuring a voltage across a second switch connected in parallel with the failed cell in a state where the second switch is shorted; and
Comparing the measured voltage with an absolute value of the measured voltage to a second reference value,
Comparison results If greater than the second reference value, the control method of the self-recovery battery, characterized in that the predetermined emergency action routine is executed. 10. The method of claim 9,
In the step of controlling the switching unit,
And as a result of the determination, if the first switch is not opened, a preset emergency action routine is executed. The method of claim 8,
In the step of controlling the switching unit
Opening a first switch corresponding to the failed cell and measuring a current flowing in the failed cell;
Comparing the measured current with a first reference value;
As a result of the comparison, if the measured current is less than the first reference value, the second switch is short-circuited,
And if the measured current is greater than the first reference value, a predetermined emergency action routine is executed. The method of claim 12,
In the step of controlling the switching unit
Measuring a current corresponding to the failed cell with the second switch shorted; and
Comparing the measured current with a second reference value;
As a result of the comparison, when the measured current is less than the second reference value, a preset emergency action routine is executed. delete delete delete

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