KR20230089713A - Battery management apparatus and control method thereof - Google Patents

Abstract

The present invention relates to an integrated battery management device and a control method thereof, and the device according to the present invention includes a first relay disposed on a first line connecting one end of a battery module and an external load, the other end of the battery module and an external load. A second relay disposed on a second line connecting a load, a current sensor for detecting a current between the second relay and the battery module, and state information of the first relay and the current sensor when an overcurrent event occurs and a gate driver blocking any one of the first relay and the second relay based on current information detected by

Description

Integrated battery management device and its control method {BATTERY MANAGEMENT APPARATUS AND CONTROL METHOD THEREOF}

The present invention relates to an integrated battery management device and a control method thereof.

The battery system can be divided into a battery module, a battery regulator, a battery management device, and a cooling device. The battery regulator connects only when the battery is in use, protecting users from high voltage, limiting leakage, and protecting the battery in case of abnormal operation.

The main components of a battery regulator may include mechanical relays, fuses, current sensors, and precharging circuits. The mechanical relay plays a role in connecting when electrical connection of the battery is required and safely breaking the circuit in a situation where blocking is required due to abnormal overcurrent. Mechanical relays can break hundreds of amperes (A) of current.

A fuse plays a role of safely inducing disconnection when a large current that is difficult to block with a mechanical relay occurs due to an external short circuit. Fuses can block large currents of hundreds of amperes (A) or more.

In the battery system, a short circuit may occur in an external circuit due to a vehicle crash accident, a maintenance accident, or a failure of a voltage component. At this time, the generated short-circuit current may generate as little as 3,000 amperes (A), and a large current as large as 20,000 amperes (A) may instantaneously occur. In this case, if the generated short-circuit current is not blocked, it may lead to battery explosion or fire.

In order to prevent this, conventionally, a fuse is connected in series with a battery so that a circuit is disconnected in order to cut off an instantaneous overcurrent.

However, if the fuse is used for a long period of time, its conduction performance may be deteriorated, causing disconnection. In order to compensate for this, if the rating of the fuse is increased, the wire connected to the fuse must also be increased, which increases material cost and weight. In addition, since the fuse cannot be reused once blown, it must be replaced without fail, resulting in cost associated with replacing the fuse.

An object of the present invention is to provide an integrated battery management device and a control method thereof, which simplify the configuration of a battery system by integrating a battery control device and a battery management device of a battery system.

In addition, another object of the present invention is to replace some mechanical relays with electronic relays to block short circuit current, thereby improving the stability and reliability of current blocking, while increasing the lifespan of the remaining mechanical relays, an integrated battery management device and It is to provide its control method.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

An integrated battery management device according to an embodiment of the present invention for achieving the above object is a first relay disposed on a first line connecting one end of a battery module and an external load, the other end of the battery module and an external load. A second relay disposed on a second line connecting the second relay, a current sensor for detecting a current between the second relay and the battery module, and when an overcurrent event occurs, by the state information of the first relay and the current sensor and a gate driver configured to cut off any one of the first relay and the second relay based on the detected current information.

In one embodiment, the first relay is characterized in that the electromagnetic relay including a semiconductor device.

In one embodiment, the second relay is characterized in that it is configured to include a mechanical relay and a fuse.

In one embodiment, the gate driver may monitor current information detected by the current sensor in real time and determine that the overcurrent event has occurred when a current of a predetermined level or more is detected.

In one embodiment, the gate driver determines whether the junction temperature of the first relay, the current detected by the current sensor, and the cumulative current accumulated up to now satisfy a cut-off condition of the first relay. to be characterized

In one embodiment, the gate driver may determine whether a junction temperature of the first relay is less than a preset reference temperature, a current current detected by the current sensor is less than a preset reference current, and an accumulated current accumulated up to now. It is characterized in that it is determined that the blocking condition of the first relay is satisfied when it is less than the set reference cumulative current.

In one embodiment, the gate driver may cut off the first relay when the junction temperature, the current current, and the cumulative current of the first relay satisfy cut-off conditions of the first relay.

In one embodiment, the gate driver blocks the second relay when at least one of the junction temperature, the current current, and the cumulative current of the first relay does not satisfy a cutoff condition of the first relay. characterized by

In one embodiment, the gate driver may diagnose a fusion state of a line connected to the battery module and count the number of interruptions due to fusion when the overcurrent event occurs.

In addition, a control method of an integrated battery management device according to an embodiment of the present invention for achieving the above object is a first relay and a first relay disposed on a first line and a second line connecting a battery module and an external load. Monitoring the state of 2 relays, monitoring the current between the second relay and the battery module and determining whether an overcurrent event occurs, when the overcurrent event occurs, by the state information of the first relay and the current sensor and blocking any one of the first relay and the second relay based on the detected current information.

In one embodiment, the first relay is characterized in that the electromagnetic relay including a semiconductor device.

In one embodiment, the second relay is characterized in that it is configured to include a mechanical relay and a fuse.

In one embodiment, the step of determining whether the overcurrent event occurs includes monitoring current information detected by the current sensor in real time and determining that the overcurrent event has occurred when a current of a predetermined level or more is detected. to be characterized

In one embodiment, the blocking may include determining whether the junction temperature of the first relay, the current detected by the current sensor, and the cumulative accumulated current accumulated up to now satisfy the blocking condition of the first relay. It is characterized by including steps.

In one embodiment, the step of determining whether the blocking condition of the first relay is satisfied is that the junction temperature of the first relay is less than a preset reference temperature, and the current detected by the current sensor is less than a preset reference current. and determining that a cut-off condition of the first relay is satisfied when an accumulated current accumulated up to now is less than a preset reference accumulated current.

In one embodiment, the blocking step includes blocking the first relay when the junction temperature, the current current, and the cumulative current of the first relay satisfy a blocking condition of the first relay. characterized by

In one embodiment, the blocking step may include blocking the second relay when at least one of the junction temperature, the current current, and the cumulative current of the first relay does not satisfy the blocking condition of the first relay. It is characterized by doing.

In one embodiment, the control method of the integrated battery management device according to the present invention, after the blocking step, diagnosing the fusion state of the line connected to the battery module, and counting the number of interruptions due to the fusion It is characterized in that it further comprises.

According to the present invention, the configuration of the battery system is simplified by integrating the battery control device and the battery management device of the battery system, thereby increasing the ease of system configuration.

In addition, according to the present invention, by replacing some mechanical relays with electronic relays to block the short-circuit current, there is an effect of improving the stability and reliability of current blocking and increasing the lifespan of the remaining mechanical relays.

1 is a diagram illustrating a battery system according to an embodiment of the present invention.
2 is a diagram illustrating an embodiment referenced to describe an overcurrent determination operation of an integrated battery management device according to an embodiment of the present invention.
3A is a diagram illustrating a control operation using a first relay of an integrated battery management device according to an embodiment of the present invention.
3B is a diagram illustrating a control operation using a second relay of an integrated battery management device according to an embodiment of the present invention.
4 and 5 are diagrams illustrating an operational flow of a control method of an integrated battery management device according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description will be omitted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. In addition, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

1 is a diagram illustrating a battery system according to an embodiment of the present invention.

Referring to FIG. 1 , a battery system may include a battery module 10 , an external load 20 , and an integrated battery management device 100 .

The battery module 10 is a main power source for supplying power to the external load 20 and may supply driving power to the external load 20 through an integrated battery management module. In addition, the battery module 10 may be charged by receiving charging power from the external load 20 according to the operation mode of the vehicle.

Here, the battery module 10 may be configured in a form in which a plurality of batteries are combined. In this case, the plurality of batteries may be high voltage batteries.

The external load 20 may correspond to an inverter (not shown) and a motor (not shown) that consume power for driving the vehicle. Here, the inverter converts the DC power of the battery module 10 supplied from the integrated battery management device 100 into AC power usable by the motor and supplies it to the motor. In this case, the inverter is charged using the power supplied from the battery module 10, and an inverter capacitor may be included to supply constant power to the motor using the charged power.

The integrated battery management device 100 is disposed between the battery module 10 and the external load 20 and serves to manage power supplied from the battery module 10 to the external load 20 .

Here, the integrated battery management device 100 monitors the output power between the battery module 10 and the external load 20 and controls the operation of the relay and regulates the battery driving the relay under the control of the battery management device. The device is configured in an integrated form.

The integrated battery management device 100 includes a first relay 110 , a precharging circuit 120 , a second relay 130 , a current sensor 140 and a gate driver 150 .

The first relay 110 is disposed on a first line connected to one end of the battery module 10, for example, to the positive (+) end of the line connecting the battery module 10 and the external load 20. It is a relay that becomes At this time, the first relay 110 may be configured as an electronic relay. Here, the electronic relay may include at least one semiconductor element, for example, a Metal Oxide Semiconductor Field Effect Transistor (MOSFET).

Compared to mechanical relays, electronic relays have a smaller capacity for interrupting current, but respond faster. Therefore, the electronic relay can safely protect the battery and peripheral components by blocking overcurrent within a short period of time when fusion (short circuit) occurs.

The second relay 130 is disposed on the second line connected to the other end of the battery module 10, for example, the negative (-) end of the line connecting the battery module 10 and the external load 20. It is a relay that becomes Here, the second relay 130 may be configured as a mechanical relay. Here, the mechanical relay may be configured with a fuse.

Mechanical relays have a slower reaction speed than electronic relays, but have a large capacity for breaking current. Therefore, the mechanical relay can protect the battery by preventing the contact from being opened when an overcurrent higher than the reference current occurs due to fusion (short circuit) and causing the fuse to break in the meantime.

The first relay 110 and the second relay 130 are switching means for regulating current supply between the battery module 10 and the external load 20, and the connection state is controlled by the control of the gate driver 150. can At this time, the first relay 110 and the second relay 130 may be used for the purpose of blocking the overcurrent when a predetermined level or more overcurrent occurs between the battery module 10 and the external load 20. Accordingly, when an overcurrent occurs, the gate driver 150 can control the overcurrent to be blocked using any one of the first relay 110 and the second relay 130 according to the characteristics of the electronic relay and the mechanical relay.

The precharging circuit 120 is a circuit that is connected in parallel to the first relay 110 on the first line and regulates current supply bypassing the first relay 110 . The precharging circuit 120 may include a precharging relay (not shown) and a precharging resistor (not shown).

The precharge circuit serves to prevent the inverter capacitor from being damaged as a sudden current is output to the external load 20 when initial power is supplied from the battery module 10 . Therefore, before the first relay 110 and the second relay 130 are turned on to supply power to the battery module 10, as the precharge relay (not shown) is turned on, the battery module 10 An inverter capacitor on the external load 20 side may be charged by outputting the output current to the external load 20 . At this time, the precharge relay (not shown) may be controlled to be turned off when the charging of the inverter capacitor is completed, and then the first relay 110 and the second relay 130 may be controlled to be turned on.

When the first relay 110 and the second relay 130 are turned on, power from the battery module 10 is supplied to the external load 20 to drive the inverter and the motor.

The current sensor 140 is connected to the output terminal of the second relay 130 disposed on the second line and detects an output current from the second relay 130 . The current sensor 140 may be disposed on the second line between the second relay 130 and the negative (-) end of the battery module 10 . At this time, the current sensor 140 provides the detected current information to the gate driver 150 .

The gate driver 150 may control the overall operation of the integrated battery management device 100,

Here, the gate driver 150 according to the present embodiment may be a hardware device such as a processor or a central processing unit (CPU), or a program implemented by a processor.

For example, the gate driver 150 collects battery state information, for example, battery temperature, voltage, charge/discharge current, battery state of charge (SOC), and checks the collected battery state information. It may be implemented in the form of a battery management system (BMS) that manages the battery state to maintain a certain level or higher.

When fusion (short circuit) occurs in a line on the battery module 10 side or the external load 20 side, an overcurrent of a predetermined level or more occurs. In this case, when an overcurrent of a predetermined level or higher is applied to the battery module 10, the component may be damaged.

To prevent this, the gate driver 150 monitors current information detected by the current sensor 140 and monitors state information of the first relay 110 and the second relay 130 in real time. At this time, the gate driver 150 determines whether an overcurrent event occurs based on current information detected by the current sensor 140 .

The current change detected by the current sensor 140 between the battery module 10 and the external load 20 refers to the embodiment of FIG. 2 .

FIG. 2 is a diagram illustrating an embodiment referred to in describing an overcurrent determination operation of an integrated battery management device according to an embodiment of the present invention, and shows a change in current on a line connected to a battery module.

As shown in FIG. 2, when it is assumed that the threshold of the current level for determining overcurrent is 'X', the gate driver 150 determines that an overcurrent event has occurred when a current greater than 'X' is detected from the current sensor 140. can judge

When an overcurrent event occurs, the gate driver 150 selects one of the first relay 110 and the second relay 130 based on the state information of the first relay 110 and the current information detected by the current sensor 140. One can be determined as a blocking relay for overcurrent blocking.

Here, the gate driver 150 satisfies the cut-off condition of the first relay 110 based on the temperature information of the first relay 110, the current detected by the current sensor 140, and the cumulative current accumulated up to now. can determine whether

Here, the first relay 110 is an electronic relay, and has a faster reaction speed than the second relay 130, but has a small capacity for blocking current. Meanwhile, the second relay 130 is a mechanical relay, and has a slower reaction speed than the first relay 110, but has a large current capacity that can be interrupted. However, in the case of a mechanical relay, as the number of uses increases, the performance of the relay deteriorates, so the lifespan of the component may be shortened.

Therefore, when an overcurrent event occurs, the gate driver 150 blocks the overcurrent that can be blocked by the first relay 110 using the first relay 110, and provides the first relay 110 with an overcurrent that cannot be blocked. By using the second relay 130 only in the case of , the life span of the mechanical relay is prevented from being shortened.

For example, in the gate driver 150, the junction temperature, which is the temperature of the semiconductor element included in the first relay 110, is less than a preset reference temperature, and the current detected by the current sensor 140 is less than the preset reference current. , and when the cumulative current accumulated up to now is less than the preset reference cumulative current, it may be determined that the blocking condition of the first relay 110 is satisfied.

In this case, the gate driver 150 may determine the first relay 110 as the blocking relay when the junction temperature, the current current, and the accumulated current satisfy the blocking condition of the first relay 110 .

Meanwhile, the gate driver 150 may determine the second relay 130 as a blocking relay when the junction temperature, current current, and accumulated current do not satisfy the blocking condition of the first relay 110 .

3A and 3B are diagrams illustrating a control operation using a first relay and a second relay, and FIG. 3A shows a control operation using a first relay of an integrated battery management device according to an embodiment of the present invention, 3B illustrates a control operation using a second relay of an integrated battery management device according to an embodiment of the present invention.

Referring to FIG. 3A , the gate driver 150, when the first relay 110 is determined to be the blocking relay according to the junction temperature, the current current, and the cumulative current satisfying the blocking condition of the first relay 110, the first relay In 110, a first control signal for overcurrent blocking may be output.

Here, the gate driver 150 may be electrically connected to the first relay 110 through a first control line. Accordingly, the gate driver 150 may output the first control signal to the first relay 110 through the first control line.

Accordingly, the first relay 110 is controlled to be in an off state based on the first control signal received from the gate driver 150, thereby blocking overcurrent.

Referring to FIG. 3B , the gate driver 150 determines that the second relay 130 is a blocking relay according to the fact that the junction temperature, current current, and cumulative current do not satisfy the blocking condition of the first relay 110. A second control signal for overcurrent blocking may be output through the two relays 130 .

Here, the gate driver 150 may be electrically connected to the second relay 130 through a second control line. Accordingly, the gate driver 150 may output the second control signal to the second relay 130 through the second control line.

Accordingly, the second relay 130 is controlled to be in an off state based on the second control signal received from the gate driver 150, thereby blocking overcurrent. Here, the second relay 130 may block overcurrent equal to or greater than the reference current by using a fuse configured therewith.

In this way, under the condition that overcurrent can be blocked by the first relay 110, the overcurrent is quickly blocked using the first relay 110 to protect the battery module 10 and peripheral components, and at the same time, the second relay 130 ) can be prevented from shortening the life of the part by minimizing the use. In this case, it is possible to minimize replacement cost due to parts replacement of the fuse and mechanical relay.

After the gate driver 150 blocks the overcurrent using the first relay 110 or the second relay 130, the fusion (short circuit) on the line connected to the battery module 10 is diagnosed, and the fusion (short circuit) It counts by accumulating the number of blocks blocked by

At this time, the gate driver 150 may transfer the fusion (short circuit) state to controllers in the vehicle for reference in vehicle control. In addition, the gate driver 150 may inform the user of the fusion (short circuit) state through a display or the like so that the user can recognize the fusion state.

Although not shown in FIG. 1 , the integrated battery management device 100 according to an embodiment of the present invention may further include a communication unit and a storage unit.

The communication unit may include a communication module for vehicle network communication with electrical components and/or controllers provided in the vehicle. Here, the vehicle network communication technology may include CAN (Controller Area Network) communication, LIN (Local Interconnect Network) communication, Flex-Ray communication, and the like.

Also, the communication unit may further include a communication module for wireless Internet access or a communication module for short range communication. Here, the wireless Internet technology may include wireless LAN (WLAN), wireless broadband (Wibro), Wi-Fi, and World Interoperability for Microwave Access (Wimax). In addition, short-range communication technologies may include Bluetooth, ZigBee, Ultra-Wideband (UWB), Radio Frequency Identification (RFID), Infrared Data Association (IrDA), and the like.

The storage unit may store data and/or algorithms necessary for the integrated battery management device 100 to operate.

As an example, the storage unit may store condition information set to determine whether an overcurrent event occurs in the integrated battery management device, or may store condition information for determining whether a blocking condition of the first relay 110 is satisfied. there is. In addition, the storage unit controls the first relay 110 and the second relay 130 in the integrated battery management device 100 or uses the first relay 110 or the second relay 130 to block overcurrent Instructions and/or algorithms, etc. may be stored.

Here, the storage unit is a storage medium such as RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read-Only Memory), PROM (Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory) can include

The operation flow of the device according to the present invention configured as described above will be described in more detail.

4 and 5 are diagrams illustrating an operational flow of a control method of an integrated battery management device according to an embodiment of the present invention.

Referring to FIG. 4 , the gate driver 150 of the integrated battery management device 100 transmits current information detected through the current sensor 140 disposed between the second relay 130 and the battery module 10 in real time. watch over At this time, the gate driver 150 determines whether an overcurrent event occurs based on the current information detected by the current sensor 140 (S110). In step 'S110', the gate driver 150 may determine that an overcurrent event has occurred when a current greater than 'X' is detected from the current sensor 140.

When it is determined that an overcurrent event has occurred in step 'S110', the gate driver 150 checks state information of the first relay 110 (S120). In 'S120', the gate driver 150 may check the junction temperature of the first relay 110.

The gate driver 150 determines whether the blocking condition of the first relay 110 is satisfied based on the junction temperature checked in step 'S120' and the current information detected by the current sensor 140 (S130).

Here, the detailed operation of the 'S130' process refers to the embodiment of FIG. 5 .

Referring to FIG. 5 , the gate driver 150 checks whether the junction temperature of the first relay 110 is less than a preset reference temperature (S131).

In addition, the gate driver 150 checks whether the current current detected by the current sensor 140 is less than a preset reference current (S133).

In addition, the gate driver 150 checks whether the cumulative current accumulated up to now is less than the preset reference cumulative current (S135).

The gate driver 150 determines that the junction temperature of the first relay 110 is less than the preset reference temperature and the current detected by the current sensor 140 is less than the preset reference current through processes 'S131' to 'S135'. And, if the cumulative current accumulated up to now is less than the preset reference cumulative current, it is determined that the blocking condition of the first relay 110 is satisfied (S137).

Meanwhile, the gate driver 150 determines that the blocking condition of the first relay 110 is not satisfied when any one of the blocking conditions of the first relay 110 is not satisfied through processes 'S131' to 'S135'. Do (S139).

In this way, the gate driver 150 determines whether the junction temperature and the current information detected by the current sensor 140 through the processes 'S131' to 'S139' of FIG. 5 satisfy the blocking condition of the first relay 110. If it is determined that, the first relay 110 based current cut-off control is performed (S140). In 'S140', the gate driver 150 may output a first control signal for overcurrent blocking to the first relay 110. Accordingly, the electronic first relay 110 may block the overcurrent as it is controlled to be in an off state based on the first control signal.

Meanwhile, the gate driver 150 determines whether the junction temperature and the current information detected by the current sensor 140 through processes 'S131' to 'S139' of FIG. 5 do not satisfy the blocking condition of the first relay 110. If it is determined that, the second relay 130 based current cut-off control is performed (S150). In 'S150', the gate driver 150 may output a second control signal for overcurrent blocking to the second relay 130. Accordingly, the mechanical second relay 130 may block the overcurrent as it is controlled to be in an off state based on the second control signal.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: battery module 20: external load
100: integrated battery management device 110: first relay
120: precharging circuit 130: second relay
140: current sensor 150: gate driver

Claims (18)

a first relay disposed on a first line connecting one end of the battery module and an external load;
a second relay disposed on a second line connecting the other end of the battery module and an external load;
a current sensor detecting a current between the second relay and the battery module; and
a gate driver blocking one of the first relay and the second relay based on state information of the first relay and current information detected by the current sensor when an overcurrent event occurs;
Integrated battery management device comprising a. The method of claim 1,
The first relay,
Integrated battery management device, characterized in that the electronic relay including a semiconductor device. In claim 1,
The second relay,
An integrated battery management device comprising a mechanical relay and fuse. In claim 1,
The gate driver,
The integrated battery management device, characterized in that for monitoring the current information detected by the current sensor in real time and determining that the overcurrent event has occurred when a current of a predetermined level or more is detected. The method of claim 1,
The gate driver,
The integrated battery management device, characterized in that for determining whether the junction temperature of the first relay, the current detected by the current sensor, and the cumulative current accumulated and detected until now satisfy a cut-off condition of the first relay. The method of claim 5,
The gate driver,
The first relay when the junction temperature of the first relay is less than the preset reference temperature, the current detected by the current sensor is less than the preset reference current, and the cumulative current accumulated up to now is less than the preset reference cumulative current An integrated battery management device, characterized in that for determining that the blocking condition of the is satisfied. The method of claim 5,
The gate driver,
The integrated battery management device, characterized in that for blocking the first relay when the junction temperature of the first relay, the current current and the cumulative current satisfies a cut-off condition of the first relay. The method of claim 5,
The gate driver,
And when at least one of the junction temperature of the first relay, the current current, and the cumulative current does not satisfy a cut-off condition of the first relay, the second relay is cut off. The method of claim 1,
The gate driver,
When the overcurrent event occurs, the integrated battery management device, characterized in that for diagnosing the fusion state of the line connected to the battery module, and counting the number of cuts due to fusion. The states of the first relay and the second relay disposed on the first line and the second line connecting the battery module and the external load are monitored, and the current detected by the current sensor between the second relay and the battery module is measured. Monitoring and determining whether an overcurrent event occurs; and
blocking one of the first relay and the second relay based on state information of the first relay and current information detected by the current sensor when the overcurrent event occurs;
Control method of an integrated battery management device comprising a. The method of claim 10,
The first relay,
Control method of an integrated battery management device, characterized in that the electronic relay including a semiconductor device. The method of claim 10,
The second relay,
A control method of an integrated battery management device comprising a mechanical relay and a fuse. The method of claim 10,
The step of determining whether the overcurrent event occurs,
and monitoring the current information detected by the current sensor in real time and determining that the overcurrent event has occurred when a current of a predetermined level or more is detected. The method of claim 10,
The blocking step is
and determining whether a junction temperature of the first relay, a current current detected by the current sensor, and an accumulated current accumulated and detected up to now satisfy a cut-off condition of the first relay. How to control the device. The method of claim 14,
Determining whether the blocking condition of the first relay is satisfied,
The first relay when the junction temperature of the first relay is less than the preset reference temperature, the current detected by the current sensor is less than the preset reference current, and the cumulative current accumulated up to now is less than the preset reference cumulative current A control method of an integrated battery management device comprising the step of determining that the blocking condition of is satisfied. The method of claim 14,
The blocking step is
and blocking the first relay when the junction temperature, the current current, and the cumulative current of the first relay satisfy a cutoff condition of the first relay. . The method of claim 14,
The blocking step is
and blocking the second relay when at least one of the junction temperature of the first relay, the current current, and the cumulative current does not satisfy a cutoff condition of the first relay. Control method of management device. The method of claim 10,
After the blocking step, diagnosing the fusion state of the line connected to the battery module: and
The control method of the integrated battery management device, characterized in that it further comprises the step of counting the number of cut-off by the fusion.

Images