KR20200019503A - Apparatus and method for controlling switch - Google Patents

Abstract

The present invention relates to a switch control device and method thereof, which can effectively control a switch in a process of controlling the switch provided in a battery pack. According to an embodiment of the present invention, the switch control device as a device for controlling the opening and closing operations of a switch includes a booting application, a main application, and a microcontroller having a first table and a second table. The first table includes a state index of the switch related to the opening and closing state of the switch; the second table includes a booting flag of the microcontroller related to the booting of the microcontroller; the booting application checks the boot factor of the microcontroller by acquiring the booting flag from the second table and transmits the state index to the main application by obtaining the state index from the first table; and the main application instructs the microcontroller to keep the switch on when the state of the switch extracted by extracting the state of the switch from the state index indicates the on state.

Description

Switch control device and method {Apparatus and method for controlling switch}

The present invention relates to a switch control apparatus and method, and more particularly, to a switch control apparatus and method that can effectively control the switch in the process of controlling the switch provided in the battery pack.

In recent years, as the demand for portable electronic products such as laptops, video cameras, mobile phones, and the like rapidly increases, and development of energy storage batteries, robots, satellites, and the like is in earnest, high-performance secondary batteries capable of repeating charging and discharging have been developed. Research is actively being conducted.

Accordingly, as the development and demand for technology for mobile devices, electric vehicles, hybrid vehicles, power storage devices, and uninterruptible power supplies have increased, the demand for secondary batteries as an energy source is rapidly increasing. In particular, secondary batteries used in electric vehicles or hybrid vehicles are high-output, high-capacity secondary batteries, and many studies on them have been conducted.

In addition, with the demand for secondary batteries, research on peripheral components and devices related to secondary batteries has been conducted. That is, a battery module made of one module by connecting a plurality of secondary batteries, a BMS that controls charge and discharge of the battery module and monitors the state of each secondary battery, a battery pack made of a battery module and a BMS as a pack, and a battery module Research on various components and devices, such as a switch that connects a load to a load such as a motor, is being conducted.

In particular, the switch is connected to the battery module and the load, and a switch for controlling the supply of power, many researches on this. As an example, the operating voltage of a widely used lithium ion secondary battery is about 3.7V to 4.2V. In order to provide a high voltage, a plurality of secondary batteries are connected in series to form a battery module.

A switch connecting the battery module and the motor may be provided in the power system. In addition, the power system may be responsible for the stable power supply between the battery and the load by selectively opening and closing at least one switch. When such a power system is provided in a vehicle, it is important to ensure that the switch is not opened due to a system error while the vehicle is running and the switch remains closed while driving the vehicle.

Therefore, there is a need in the art for a technique that can effectively keep the switch closed despite system failure. This requirement increases the complexity of the circuit.

The present invention has been made under the background of the prior art, and relates to an improved switch control apparatus and method that can effectively control the switch in the process of controlling the switch provided in the battery pack.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the claims.

A switch control apparatus according to an embodiment of the present invention for achieving the above object, as a device for controlling the opening and closing operation of the switch, a microcontroller having a boot application and the main application, the first table and the second table And the first table includes a state index of the switch related to an open / closed state of the switch, and the second table includes a boot flag of the microcontroller related to booting of the microcontroller. The application may acquire the boot flag from the second table to identify a boot factor of the microcontroller, obtain the state index from the first table, and transmit the state index to the main application. Phase from the state index If the state of the switch is extracted and the state of the extracted switch indicates an on state, the microcontroller is instructed to keep the switch in the on state.

The main application may further include outputting the switch to the on state from the microcontroller to the switch so that when the switch is turned on, the main application of the first table may display the first table based on the output of the microcontroller. The state index may be configured to record that the state of the switch is on.

The main application may be configured to obtain the booting factor that causes the booting from the microcontroller and to record the booting factor in the boot flag of the second table when the microcontroller is booted.

The booting application may check the booting factor from the booting flag when the microcontroller is booted, and obtain the state index from the first table when the booting factor is a software boot related to the main application. Can be configured.

The main application may instruct the microcontroller to transmit an output from the microcontroller to the switch within a preset time.

In addition, the switch control apparatus according to an embodiment of the present invention further comprises a memory device configured to store the first table and the second table, wherein the boot application and the main application, the first table and the The memory addresses allocated to the second table may be configured to be shared with each other.

In addition, the BMS according to an embodiment of the present invention for achieving the above object includes a switch control device according to the present invention.

In addition, the battery pack according to an embodiment of the present invention for achieving the above object includes a switch control device according to the present invention.

In addition, the switch control method according to an embodiment of the present invention for achieving the above object, the method for controlling the opening and closing operation of the switch, recording the state index of the switch associated with the open and closed state of the switch; Recording a boot flag of the microcontroller associated with booting of the microcontroller; Acquiring the boot flag recorded by the boot flag recording step to confirm a boot factor of the microcontroller, and obtaining the state index recorded by the state index recording step based on the boot factor; And instructing the microcontroller to maintain the switch in the on state when the state of the switch extracted by extracting the state of the switch from the state index obtained by the state index obtaining step indicates an on state. It includes.

Further, in the state index recording step, when an output for switching the switch to an on state is transmitted from the microcontroller to the switch, and the switch is turned on, the state index is written to the state index based on the output of the microcontroller. It can be recorded that the state of the switch is in the on state.

In the booting flag recording step, when the microcontroller is booted, the booting factor that causes booting may be obtained from the microcontroller and the booting factor may be recorded in the booting flag.

In the obtaining of the state index, when the microcontroller is booted, the booting factor may be checked from the boot flag, and when the booting factor is software booting associated with a main application, the state index may be obtained.

According to an aspect of the present invention, there is an advantage that can effectively maintain the state of the switch through a plurality of applications.

In addition, according to one aspect of the present invention, by recording the state of the switch, there is an advantage that can effectively check the state of the switch and maintain the state of the switch.

In particular, according to one embodiment of the present invention, an improved switch control apparatus and method that can effectively maintain the state of a switch by checking the cause of booting of the microcontroller and the previous state of the switch can be provided.

In addition to the present invention may have a variety of other effects, such other effects of the present invention can be understood by the following description, it will be more clearly understood by the embodiments of the present invention.

The following drawings attached to this specification are illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to.
1 is a diagram schematically illustrating a configuration in which a switch control device according to an embodiment of the present invention is connected to some components of a battery pack.
2 is a block diagram of an application included in a microprocessor according to an embodiment of the present invention.
3 shows a first table referred to by a switch control device according to an embodiment of the present invention.
4 shows a second table referenced by the switch control device according to an embodiment of the present invention.
5 is a flowchart schematically illustrating a switch control method according to an embodiment of the present invention.
6 and 7 are graphs illustrating a switch control method according to a comparative example and an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own inventions. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical spirit of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Throughout the specification, when a part is said to "include" a certain component, it means that it may further include other components, without excluding the other components unless otherwise stated. In addition, the term "microprocessor" described in the specification means a unit for processing at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

In addition, throughout the specification, when a part is "connected" to another part, it is not only "directly connected" but also "indirectly connected" with another element in between. Include.

In the present specification, the secondary battery means one independent cell having a negative electrode terminal and a positive electrode terminal and physically separable. For example, one pouch type lithium polymer cell may be regarded as a secondary battery.

1 is a diagram schematically illustrating a configuration in which a switch control device according to an embodiment of the present invention is connected to some components of a battery pack, and FIG. 2 is an application provided in a microprocessor according to an embodiment of the present invention. Is a block diagram of.

Referring to FIG. 1, a battery pack according to an embodiment of the present invention is provided. The battery pack includes a first cell assembly 10, a second cell assembly 90, a switch 30, a vehicle load 50, voltage drivers 60, 62, electrical lines 40, 41, 42, 43, 44, 45, the power supply IC 70, and the microcontroller 100.

The battery pack may include a cell assembly having one or more secondary batteries electrically connected in series with each other.

For example, when the battery pack according to an embodiment of the present invention is provided in a vehicle, the first cell assembly 10 may be a battery that supplies power to a motor of the vehicle. Here, the positive terminal of the first cell assembly 10 may be electrically connected to the vehicle load 50, and the negative terminal of the first cell assembly 10 may be electrically connected to the ground.

For example, when the battery pack according to an embodiment of the present invention is provided in a vehicle, the second cell assembly 90 may be a battery that supplies starting power to the MCU of the vehicle. Here, the positive terminal of the second cell assembly 90 may be electrically connected to the power supply IC 70, and the negative terminal of the second cell assembly 90 may be electrically connected to the ground.

The switch 30 may include a contactor 31, a contactor coil 32, a first electrical node 33, and a second electrical node 34. The first electrical node 33 may be electrically connected to the positive terminal of the first cell assembly 10 via the electrical line 40. The second electrical node 34 may be electrically connected to the vehicle load 50 via the electrical line 41. The first end of the contactor coil 32 may be electrically connected to the voltage driver 60 via an electrical line 43. The voltage driver 60 may further be electrically connected to the digital input / output device 130 of the microcontroller 100 via the electric line 42. The second end of the contactor coil 32 may be electrically connected to the voltage driver 62 via an electrical line 45. In addition, the voltage driver 62 may be electrically connected to the digital input / output device 130 of the microcontroller 100 through the electric line 44.

When the microcontroller 100 generates the first and second control signals transmitted by the voltage drivers 60 and 62, respectively, the contactor coil 32 is energized to switch the contactor 31 to the closed state. The vehicle load 50 may receive a voltage from the first cell assembly 10.

 In addition, when the microcontroller 100 generates the third and fourth control signals transmitted by the voltage drivers 60 and 62, respectively, the contactor coil 32 is deactivated to open the contactor 31 in an open state. Can be converted to In one embodiment of the present invention, the third and fourth control signals may each be at a ground voltage level.

The power supply IC 70 can supply the vehicle starting power to the microcontroller 100. For example, when the power supply IC 70 receives the vehicle start signal from the ECU of the vehicle, the power supply IC 70 may receive the start power from the second cell assembly 90 and transmit the start power to the microcontroller 100. . The power supply IC 70 may be electrically connected to the microcontroller 100 to transmit and receive electrical signals.

The microcontroller 100 may control the opening and closing operation of the switch 30. In addition, the microcontroller 100 may include a microprocessor 110, a digital input / output device 130, and a memory device 120.

The microprocessor 110 may be electrically connected to the digital input / output device 130 and the memory device 120 to be operable. The digital input / output device 130 may be electrically connected to the voltage drivers 60, 62 via electrical lines 42, 44.

1 and 2, a microcontroller 100 according to an embodiment of the present invention may include a microprocessor 110 and a memory device 120.

The memory device 120 according to an embodiment of the present invention may include a first table 121 and a second table 122.

The first table 121 may include a state index of the switch 30 related to the open / closed state of the switch 30. Here, the open / close state of the switch 30 may include an ON state in which the switch 30 is opened and an OFF state in which the switch 30 is closed. For example, the state index of the switch 30 may be recorded as an encoded binary value in the first table 121.

The second table 122 may include a boot flag of the microcontroller 100 related to booting of the microcontroller 100. Here, the booting of the microcontroller 100 may include a hardware boot due to a hardware factor and a software boot due to a software factor. For example, the hardware booting may mean that the vehicle starting power is supplied from the power supply IC 70 to the microcontroller 100 so that the microcontroller 100 is booted. In addition, the software booting may mean that the microcontroller 100 is booted by a reboot caused by a software error generated in the microcontroller 100. For example, in the second table 122, a boot flag may be recorded as an encoded binary value.

The microprocessor 110 may include a boot application 111 and a main application 112.

The boot application 111 may obtain a boot flag from the second table 122 and check a boot factor of the microcontroller 100. More specifically, the booting application 111 may be executed when the microcontroller 100 is booted. In addition, the boot application 111 may read the second table 122 from the memory device 120 as a first operation of the boot application 111. In addition, the booting application 111 may check a booting factor that causes the booting of the microcontroller 100 by obtaining a booting flag recorded in the second table 122. For example, the boot factor can be either hardware boot or software boot.

In addition, the booting application 111 may obtain the state index from the first table 121 and transmit the state index to the main application 112. More specifically, the booting application 111 may read the first table 121 from the memory device 120. For example, the booting application 111 may read the first table 121 from the memory device 120 when the booting factor checked from the second table 122 is software booting. In addition, the booting application 111 may obtain a state index recorded in the first table 121 and transmit the state index to the main application 112.

The main application 112 may extract the state of the switch 30 from the state index. More specifically, the main application 112 may receive a state index from the boot application 111. In addition, the main application 112 may extract the state of the switch 30 from the state index.

In addition, when the state of the extracted switch 30 indicates an on state, the main application 112 may instruct the microcontroller 100 to keep the switch 30 in the on state. More specifically, the main application 112 may instruct the microcontroller 100 to keep the switch 30 in the on state when the state of the switch 30 extracted from the state index is in the ON state. In this case, the microcontroller 100 may transmit an output to the switch 30 so that the switch 30 is turned on. In addition, when the state of the switch 30 extracted from the state index is OFF, the main application 112 may not change the state of the switch 30.

Preferably, the microprocessor 110 according to an embodiment of the present invention may further include a switch control application 113, as shown in the configuration of FIG.

The switch control application 113 may control the opening and closing operation of the switch 30. More specifically, the switch control application 113 may receive a command from the main application 112 and control the operation of the switch 30 according to the received command. For example, when the switch control application 113 receives a switch ON command from the main application 112, the switch control application 113 may transmit an output to the switch 30 so that the switch 30 is turned on.

3 shows a first table referred to by a switch control device according to an embodiment of the present invention. 4 illustrates a second table referenced by the switch control device according to an embodiment of the present invention.

First, referring to FIG. 3, a first table 121 having records I1 and I2 is shown. In the records I1 and I2, a state index used by the booting application 111 and the main application 112 may be recorded. For example, in the state index, ON indicating the ON state of the switch 30 may be recorded in the record I1. Further, OFF indicating the OFF state of the switch 30 can be recorded in the record I2.

Referring to FIG. 4, there is shown a second table 122 having records F1, F2. In the records F1 and F2, boot flags used by the boot application 111 and the main application 112 may be recorded. For example, in the boot flag, a software boot indicating a software boot of the microcontroller 100 may be recorded in the record F1. In addition, a hardware boot indicating a hardware boot of the microcontroller 100 may be recorded in the record F2. For example, the software boot may include a running reset in which the microcontroller 100 is rebooted due to a software error during execution. In addition, the hardware booting may include booting in which the microcontroller 100 is supplied with 12V starting power.

Preferably, in the main application 112 according to an embodiment of the present invention, an output for switching the switch 30 to an on state is transmitted from the microcontroller 100 to the switch 30 so that the switch 30 is turned on. When switching to the state, the state of the switch 30 may be recorded in the state index of the first table 121 based on the output of the microcontroller 100 as the on state. More specifically, the main application 112, when the output for switching the switch 30 to the on state from the switch control application 113 provided in the microcontroller 100 to the switch 30, the first table The state of the switch 30 can be recorded in the state index of 121 as the on state.

More preferably, when the microcontroller 100 is booted, the main application 112 according to an embodiment of the present invention acquires a boot factor that causes the booting from the microcontroller 100 to obtain a second table ( The boot argument may be recorded in the boot flag of 122). For example, when the microcontroller 100 is booted, the main application 112 may obtain a boot factor that causes booting from the boot recording application. Here, when the microcontroller 100 is booted in the microcontroller 100 to boot, the boot recording application may record a boot factor that causes booting to the memory device 120. In addition, the boot recording application may transmit a boot factor to the main application 112. In addition, when the microcontroller 100 is booted, the main application 112 may obtain a boot factor from a boot record application and record the boot factor in a boot flag of the second table 122.

More preferably, the booting application 111 according to an embodiment of the present invention, when the microcontroller 100 is booted, checks the booting factor from the booting flag, and the booting factor is the software booting associated with the main application 112. In this case, the state index may be obtained from the first table 121. For example, when the microcontroller 100 is booted, the booting application 111 may check the booting factor from the booting flag recorded in the second table 122. In addition, the boot application 111 may obtain a state index from the first table 121 when the checked boot factor is a software boot such as a running reset of the microcontroller 100.

Preferably, the boot application 111 and the main application 112 according to an embodiment of the present invention may be configured to share memory addresses allocated to the first table 121 and the second table 122 with each other. have. Through such a configuration, the booting application 111 and the main application 112 according to an embodiment of the present invention can easily access the first table 121 and the second table 122.

Meanwhile, the microprocessor 110 may include a processor, an application-specific integrated circuit (ASIC), another chipset, a logic circuit, a register, a communication modem, and / or a data processor, which are known in the art, to perform the operation as described above. It may be implemented in a form including selectively.

On the other hand, the memory device 120 is not particularly limited as long as it is a storage medium capable of recording and erasing information. For example, the memory device 120 may be a RAM, a ROM, a register, a hard disk, an optical recording medium, or a magnetic recording medium. The memory device 120 may also be electrically connected to the microprocessor 110, for example, via a data bus or the like so as to be accessible by the microprocessor 110, respectively. The memory device 120 may also store and / or update and / or erase and / or transmit a program comprising various control logics each performed by the microprocessor 110, and / or data generated when the control logic is executed. Can be.

The switch control device according to the present invention can be applied to a BMS. That is, the BMS according to the present invention may include the switch control device according to the present invention described above. In such a configuration, at least some of the components of the switch control apparatus according to the present invention may be implemented by supplementing or adding a function of the configuration included in the conventional BMS. For example, the microprocessor 110 and the memory device 120 of the switch control apparatus according to the present invention may be implemented as a component of a battery management system (BMS).

In addition, the switch control device according to the present invention may be provided in a battery pack. That is, the battery pack according to the present invention may include the switch control device according to the present invention described above. Here, the battery pack may include one or more secondary batteries, the switch control device, electrical equipment (with BMS, relay, fuse, etc.), a case, and the like.

5 is a flowchart schematically illustrating a switch control method according to an embodiment of the present invention. In FIG. 5, the performing agent of each step may be referred to as each component of the battery operating apparatus according to the present invention described above.

As shown in FIG. 5, the battery operating method according to the present invention includes a state index recording step S100, a boot flag recording step S110, a state index obtaining step S120, and a switch 30 maintaining on state ( S130).

First, in the state index recording step S100, the state index of the switch related to the open / closed state of the switch may be recorded. Subsequently, in the boot flag recording step (S110), the boot flag of the microcontroller related to the booting of the microcontroller may be recorded. Subsequently, in the state index obtaining step (S120), the boot flag recorded by the boot flag recording step is obtained to confirm the boot factor of the microcontroller, and the state index recorded by the status index record step is obtained based on the boot factor. can do. Subsequently, in the switch on state maintaining step (S130), when the state of the extracted switch indicates an on state by extracting the state of the switch from the state index obtained by the state index obtaining step, the micro switch is maintained in the on state. You can command the controller.

Preferably, in the state index recording step (S100) according to an embodiment of the present invention, when the output is transferred from the microcontroller to the switch to the switch to the on state when the switch is turned on, the output of the microcontroller The state of the switch can be recorded as an on state based on the state index.

Preferably, in the boot flag recording step (S110) according to an embodiment of the present invention, when the microcontroller is booted, the boot factor that causes the booting may be obtained from the microcontroller and the boot factor may be recorded in the boot flag. have.

Preferably, in the state index obtaining step (S120) according to an embodiment of the present invention, when the microcontroller is booted, check the boot factor from the boot flag, if the boot factor is the software boot associated with the main application, the state index Can be obtained.

6 and 7 are graphs illustrating a switch control method according to a comparative example and an embodiment of the present invention.

First, a switch control method according to a comparative example of the present invention will be described with reference to FIGS. 1 and 6.

The microcontroller 100 may be stopped when the power supply is cut off from the power supply IC 70. Subsequently, the microcontroller 100 may boot and operate when power is supplied from the power supply IC 70.

In addition, when a software error occurs while the microcontroller 100 is operating, the microcontroller 100 may be operated by a reboot (for example, a running reset) that is stopped and restarted.

2 and 6, a first output signal S1 and a second output signal S2 are shown.

The first output signal S1 may be a signal output from the main application 112 to the switch control application 113. For example, as shown in the graph of FIG. 6, the output of the first output signal S1 may be stopped at a time point T1 when the microcontroller 100 is rebooted. In addition, the first output signal S1 may be output again at the time T2 when the on-state command of the switch 30 is transmitted from the main application 112 to the switch control application 113.

The second output signal S2 may be a signal output from the switch control application 113 to the switch 30. For example, as shown in the graph of FIG. 6, the second output signal S2 may be maintained for a predetermined time T3-T1 from a time point T1 at which the microcontroller 100 is rebooted. have. For example, the preset output holding time may be 3 msec. In this case, the switch 30 may remain closed without switching to the open state. In addition, when the preset time T3-T1 elapses from the time T1 at which the microcontroller 100 is rebooted, the second output signal S2 may be stopped. In this case, the switch 30 may be switched from the closed state to the open state. In addition, the second output signal S2 may be output again at a time point T2 when the on-state command of the switch 30 is transmitted from the main application 112 to the switch control application 113. In this case, the switch 30 can be switched from the open state to the closed state.

Through such a configuration, the control method of the switch 30 according to the comparative example of the present invention may not maintain the closed state of the switch 30 when the microcontroller 100 is rebooted. If the microcontroller 100 is rebooted while driving the electric vehicle, an accident may occur when the electric vehicle stops while driving.

1 and 7, a method of controlling the switch 30 according to an embodiment of the present invention will be described.

The microcontroller 100 may be stopped when the power supply is cut off from the power supply IC 70. Subsequently, the microcontroller 100 may boot and operate when power is supplied from the power supply IC 70.

In addition, when a software error occurs during operation, the microcontroller 100 may be operated by a reboot (for example, a running reset) that is stopped and then operated again.

2 and 7, a third output signal S3 and a fourth output signal S4 are shown.

The third output signal S3 may be a signal output from the main application 112 to the switch control application 113. For example, as shown in the graph of FIG. 7, the output of the third output signal S3 may be stopped at a time point T1 when the microcontroller 100 is rebooted. In addition, when the microcontroller 100 reboots due to a software error, the third output signal S3 is at a time T3 when the main application 112 confirms the on state of the switch 30 from the state index. Can be output again.

The fourth output signal S4 may be a signal output from the switch control application 113 to the switch 30. For example, as illustrated in the graph of FIG. 7, the fourth output signal S4 may be maintained at an output for a preset time T3-T1 from the time T1 at which the microcontroller 100 is rebooted. have. For example, the preset output holding time may be 3 msec. In this case, the switch 30 may remain closed without switching to the open state. In addition, the fourth output signal S4 may be configured such that the main application 112 may change the state of the switch 30 from the state index before the preset time T3-T1 elapses from the time T1 at which the microcontroller 100 is rebooted. When the third output signal S3 is output by checking the on state, the output may be maintained.

Preferably, the main application 112 according to an embodiment of the present invention may instruct the microcontroller 100 to transmit an output from the microcontroller 100 to the switch 30 within a preset time.

For example, the main application 112 may output the third output signal S3 by checking the on state of the switch 30 from the state index within 800usec from the time when the microcontroller 100 is rebooted. In this case, the switch control application 113 may receive the third output signal S3 and maintain the output of the fourth output signal S4 based on the third output signal S3.

Through such a configuration, when the microcontroller 100 is rebooted, the switch control method according to the exemplary embodiment of the present invention may maintain the closed state of the switch 30. In addition, the switch control method according to an exemplary embodiment of the present invention may prevent an accident in which the electric vehicle is stopped while driving when the microcontroller 100 is rebooted while driving the electric vehicle.

In addition, when the control logic is implemented in software, the microprocessor may be implemented as a set of program modules. In this case, the program module may be stored in the memory device and executed by the processor.

In addition, various control logics of the microprocessor may be combined with at least one, and the combined control logics may be written in a computer readable code system so that the computer readable access is not particularly limited. In one example, the recording medium includes at least one selected from the group consisting of a ROM, a RAM, a register, a CD-ROM, a magnetic tape, a hard disk, a floppy disk, and an optical data recording device. In addition, the code system may be distributed and stored and executed in a networked computer. In addition, functional programs, code, and segments for implementing the combined control logics can be easily inferred by programmers in the art to which the present invention pertains.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

10: first cell assembly
30: switch
31: Contactor
32: contactor coil
33: first electrical node
34: second electrical node
40, 41, 42, 43, 44, 45: electric line
50: vehicle load
60, 62: voltage driver
70: power supply IC
90: second cell assembly
100: microcontroller
110: microprocessor
111: boot application
112: main application
113: switch control application
120: memory device
121: first table
122: second table
130: digital input / output device

Claims (12)

In the apparatus for controlling the opening and closing operation of the switch,
A microcontroller having a boot application and a main application and a first table and a second table,
The first table has a state index of the switch related to the open / closed state of the switch,
The second table includes a boot flag of the microcontroller related to booting of the microcontroller,
The booting application obtains the booting flag from the second table, identifies a boot factor of the microcontroller, obtains the state index from the first table, and transmits the state index to the main application.
The main application may be configured to instruct the microcontroller to keep the switch on when the state of the switch extracted by extracting the state of the switch from the state index indicates an on state. Device.
The method of claim 1,
The main application, when the output is transmitted from the microcontroller to the switch to turn on the switch is turned on, the state index of the first table based on the output of the microcontroller And control to record the state of the switch as being in an on state.
The method of claim 2,
The main application is configured to acquire the booting factor that causes booting from the microcontroller when the microcontroller is booted, and to record the booting factor in the boot flag of the second table. Device.
The method of claim 3,
The booting application is configured to check the booting factor from the booting flag when the microcontroller is booted and to obtain the status index from the first table when the booting factor is a software boot associated with the main application. Switch control device characterized in that.
The method of claim 4, wherein
And the main application instructs the microcontroller to transmit an output from the microcontroller to the switch within a preset time.
The method of claim 1,
Further comprising a memory device configured to store the first table and the second table,
And the booting application and the main application are configured to share memory addresses assigned to the first table and the second table.
BMS comprising a switch control device according to any one of claims 1 to 6.
A battery pack comprising the switch control device according to any one of claims 1 to 6.
In the method of controlling the opening and closing operation of the switch,
Recording a state index of the switch related to the open / closed state of the switch;
Recording a boot flag of the microcontroller associated with booting of the microcontroller;
Acquiring the boot flag recorded by the boot flag recording step to confirm a boot factor of the microcontroller, and obtaining the state index recorded by the state index recording step based on the boot factor; And
Instructing the microcontroller to maintain the switch in an on state when the state of the switch extracted by extracting the state of the switch from the state index obtained by the state index obtaining step indicates an on state;
Switch control method comprising a.
The method of claim 9,
The state index recording step may include outputting the switch to the state index based on an output of the microcontroller when an output is transmitted from the microcontroller to the switch and the switch is turned on. The switch control device, characterized in that the recording state of the on state.
The method of claim 10,
The booting flag recording step, when the microcontroller is booted, the switch control device, characterized in that for obtaining the booting factor causing the booting from the microcontroller and recording the booting factor in the booting flag.
The method of claim 11,
The obtaining of the state index may include: checking the boot factor from the boot flag when the microcontroller is booted, and obtaining the state index when the boot factor is a software boot associated with a main application. Device.

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