WO2019088622A1

WO2019088622A1 - Mobile x-ray device and method for controlling power in mobile x-ray device

Info

Publication number: WO2019088622A1
Application number: PCT/KR2018/012916
Authority: WO
Inventors: 김명제
Original assignee: 삼성전자 주식회사
Priority date: 2017-11-01
Filing date: 2018-10-29
Publication date: 2019-05-09

Abstract

Provided is a mobile X-ray device including a power supply unit for supplying operating power, wherein the power supply unit may comprise: a battery pack including a plurality of battery cells; a battery management unit for performing control such that the operating power is supplied from the battery pack to at least one component of the mobile X-ray device; and a monitoring circuit for monitoring voltages of the plurality of battery cells, and controlling monitored power supplied from the plurality of battery cells on the basis of whether the operating power is supplied to the at least one component of the mobile X-ray device.

Description

Power control method for mobile x-ray device and mobile x-ray device

The present disclosure relates to a mobile x-ray apparatus including a battery and a power control method in a mobile x-ray apparatus.

X-ray is an electromagnetic wave having a wavelength of 0.01 to 100 ohms (Å), and has a property of transmitting an object. Therefore, it is generally used in medical equipment for photographing the inside of a living body, Can be widely used.

An X-ray apparatus using an X-ray beam transmits an X-ray emitted from an X-ray source to a target object, and detects the intensity difference of the transmitted X-rays in an X-ray detector to acquire an X-ray image of the object. The X-ray device can detect the internal structure of the object and diagnose the object with the X-ray image. The X-ray apparatus has an advantage that the internal structure of the object can be easily grasped by using the principle that the transmittance of the X-rays is changed according to the density of the object and the atomic number of the atom constituting the object.

If the wavelength of the X-ray is short, the transmittance becomes large and the screen becomes bright.

The x-ray apparatus has a general x-ray apparatus fixed in a certain space and a mobile x-ray apparatus which can be moved in any place.

Here, since the mobile X-ray apparatus is equipped with an X-ray irradiating unit on a movable body and uses a portable X-ray detector, it is possible to perform X-ray imaging in various places other than a specific place. Such a mobile X-ray apparatus has a battery internally, and can perform x-ray imaging at various places where power is not supplied through battery charging.

The present invention relates to a power supply control method for a mobile X-ray apparatus and a mobile X-ray apparatus that includes a battery, and more particularly, to a power control method for shutting off power supplied to a monitoring circuit for monitoring a voltage of battery cells when a shutdown occurs in a mobile X- &Lt; / RTI >

According to the embodiment of the present disclosure, when the power source of the mobile x-ray apparatus is shut down, the mobile x-ray apparatus can cut off the power supplied to the monitoring circuit, thereby preventing discharge of the battery cells and extending the storage period of the battery.

The present invention may be readily understood by reference to the following detailed description and the accompanying drawings, in which reference numerals refer to structural elements.

1 is an external view showing an X-ray apparatus according to an embodiment.

2 is an external view of an X-ray detector according to an embodiment.

3 is a block diagram illustrating a mobile x-ray device according to one embodiment.

FIG. 4 is a block diagram illustrating the configuration of the mobile X-ray apparatus shown in FIG. 3 in more detail, according to an embodiment.

FIG. 5A is a diagram for explaining the power supply of the monitoring circuit when the power of the mobile X-ray apparatus is shut off by the power-off switch when there is one monitoring circuit for monitoring the voltage of the battery cells according to one embodiment.

5B is a view for explaining the power supply of the monitoring circuit when the power of the mobile X-ray apparatus is cut off by the power-off switch when there are a plurality of monitoring circuits for monitoring the voltage of the battery cells according to an embodiment.

6 is a diagram for explaining a process in which power is leaked from a monitoring circuit even if the power supply unit is shut down according to an embodiment.

7 is a diagram for explaining a process in which power is cut off in the monitoring circuit as the power source unit is shut down according to an embodiment.

FIG. 8 is a diagram for explaining a process in which power is shut off in the monitoring circuit as the power source unit is shut down according to another embodiment.

9 is a flowchart illustrating a power control method in a mobile X-ray apparatus according to an embodiment.

10 is a flowchart illustrating a power control method in a mobile X-ray apparatus according to an embodiment.

According to one aspect of the present invention, there is provided a mobile radiography apparatus including a power supply for supplying operation power. The power supply unit may include: a battery pack including a plurality of battery cells; A battery management unit for controlling the operation power to be supplied from the battery pack to at least one component of the mobile X-ray apparatus; And a monitoring circuit for monitoring a voltage of the plurality of battery cells and for controlling monitoring power supplied from the plurality of battery cells based on whether the operating power is supplied to at least one component of the mobile X-ray apparatus .

According to another aspect of the present invention, there is provided a power control method for a mobile x-ray apparatus including a battery pack including a plurality of battery cells, a monitoring circuit for monitoring a voltage of the plurality of battery cells, and a battery management unit, / RTI > The power control method of the mobile X-ray apparatus includes the steps of: a) monitoring the power unit for controlling the operation power to be supplied from the battery pack to at least one component of the mobile X-ray apparatus; b) determining whether the power supply unit has been shut down; And c) shutting down the monitoring power supplied to the monitoring circuit from the plurality of battery cells when the power supply unit is shut down.

According to another aspect of the present invention, there is provided a recording medium on which a program including instructions executable by a computer for a power control method of the mobile X-ray apparatus is recorded.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as " including " an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Like reference numerals refer to like elements throughout the specification. The present specification does not describe all elements of the embodiments, and redundant description between general contents or embodiments in the technical field of the present invention will be omitted. As used herein, the term " part " may be embodied in software or hardware, and may be embodied as a unit, element, or section, Quot; element " includes a plurality of elements. Hereinafter, the working principle and embodiments of the present invention will be described with reference to the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Hereinafter, embodiments will be described in detail with reference to the drawings.

1 is an external view showing a mobile X-ray apparatus.

1, an X-ray apparatus 100 includes an X-ray examination unit 110 for generating and irradiating an X-ray, an input unit 151 for receiving a command from a user, a display unit 152 for providing information to a user, A control unit 120 for controlling the X-ray apparatus 100 in accordance with an instruction from the user, and a communication unit 140 for communicating with an external apparatus.

The X-ray irradiating unit 110 may include an X-ray source for generating an X-ray and a collimator for adjusting an irradiation region of the X-ray generated from the X-ray source.

When the X-ray apparatus 100 is implemented as a mobile X-ray apparatus, the main body 101 to which the X-ray irradiating unit 110 is connected is freely movable and the arm 103 connecting the X-ray irradiating unit 110 and the main body 101 is also rotated and / The X-ray irradiating unit 110 can be moved freely in the three-dimensional space because the X-ray irradiating unit 110 can be linearly moved.

The input unit 151 can receive commands for photographing protocol, photographing conditions, photographing timing, position control of the X-ray irradiating unit 110, and the like. The input unit 151 may include a keyboard, a mouse, a touch screen, a voice recognizer, and the like.

The display unit 152 may display a screen for guiding a user's input, an x-ray image, a screen showing the state of the x-ray apparatus 100, and the like.

The control unit 120 can control the photographing timing, photographing conditions, and the like of the X-ray irradiating unit 110 according to the control command input from the user, and can generate a medical image using the image data received from the X- have. The control unit 120 may control the position and posture of the X-ray irradiating unit 110 according to the imaging protocol and the position of the object P.

The control unit 120 may include a memory for storing a program for performing the above-described operations and operations described later, and a processor for executing the stored program. The control unit 120 may include a single processor and may include a plurality of processors. In the latter case, a plurality of processors may be integrated on one chip or may be physically separated.

The main body 101 may be provided with a storage unit 105 for storing the X-ray detector 200. In addition, a charging terminal capable of charging the X-ray detector 200 is provided in the storage unit 105 so that the X-ray detector 200 can be stored while being charged.

The input unit 151, the display unit 152, the control unit 120 and the communication unit 140 may be provided in the main body 101. The image data acquired by the X-ray detector 200 is transmitted to the main body 101, And may be displayed on the display unit 152 or transmitted to an external device through the communication unit 140. [

The control unit 120 and the communication unit 140 may be separately provided from the main body 101 and only a part of the components of the control unit 120 and the communication unit 140 may be provided in the main body 101. [

The X-ray apparatus 100 is connected to an external device (for example, an external server 310, the medical device 320, and the portable terminal 330 (smart phone, tablet PC, wearable device, etc.) So that data can be transmitted or received.

The communication unit 140 may include one or more components that enable communication with an external device, and may include at least one of a short-range communication module, a wired communication module, and a wireless communication module, for example.

Alternatively, the communication unit 140 may receive a control signal from an external device, transmit the received control signal to the control unit 120, and cause the control unit 120 to control the X-ray apparatus 100 in accordance with the received control signal It is possible.

The control unit 120 may also control the external device according to the control signal of the control unit by transmitting a control signal to the external device through the communication unit 140. [ For example, the external device can process data of the external device according to a control signal of the control unit 120 received through the communication unit 140. [

The communication unit 140 may further include an internal communication module that enables communication between the components of the X-ray apparatus 100. [ The external device may be provided with a program capable of controlling the X-ray apparatus 100, and the program may include an instruction to perform some or all of the operations of the control unit 120. [

The program may be installed in the portable terminal 191 in advance, or the user of the portable terminal 191 may download and install the program from a server providing the application. The server providing the application may include a recording medium storing the program.

The communication unit 140 may further include an internal communication module that enables communication between the components of the X-ray apparatus 100. [

2 is an external view of a portable X-ray detector.

As described above, the X-ray detector 200 used in the X-ray apparatus 100 can be implemented as a portable X-ray detector. In this case, the X-ray detector 200 may operate wirelessly including a battery for supplying power, and the charging port 201 may be connected to a separate power supply unit by a cable (C) .

A case 203 for forming an outer appearance of the X-ray detector 200 is provided with a detection element for detecting an X-ray and converting it into image data, a memory for temporarily or temporarily storing image data, a control signal from the X- A communication module for receiving or transmitting image data to the X-ray apparatus 100, and a battery may be provided. In addition, image correction information of the detector and unique identification information of the X-ray detector 200 may be stored in the memory, and identification information stored when communicating with the X-ray apparatus 100 may be transmitted together.

The mobile X-ray apparatus 300 shown in FIG. 3 corresponds to the mobile X-ray apparatus 100 described with reference to FIG. 1, and a description overlapping with FIG. 1 will be omitted.

3, the mobile X-ray apparatus 300 may include a power unit 310, a controller 320, and an X-ray irradiator 330. The power unit 310 includes a battery pack 311, a battery management unit (BMS) A battery management system 312, and a monitoring integrated circuit 313. The power supply unit 310 may be provided inside the main body 101.

The battery pack 311 can supply operation power required for X-ray imaging to at least one component included in the mobile x-ray apparatus 300 so that the mobile x-ray apparatus 300 can perform x- . The at least one component may include a control unit 320, an X-ray irradiation unit 330, an input unit (not shown), an output unit (not shown), a communication unit (not shown), and the like.

The battery management unit 312 may control the operation power to be supplied from the battery pack 311 to at least one component of the mobile X-ray apparatus 300. That is, the battery management unit 312 can control and manage the power unit 310 based on the state of the battery pack 311.

The monitoring circuit 313 may monitor the voltages of the plurality of battery cells. The control unit 320 may control an operation of the mobile radioconjugery 300 based on the operation power.

3, the monitoring circuit 313 is included in the battery management unit 312 and the battery management unit 312 monitors the operation of the monitoring circuit 313 Can be controlled as a whole.

The control unit 320 determines whether the power supply unit 310 has been shut down and controls the monitoring circuit 313 to shut down the monitoring power supplied from the plurality of battery cells to the monitoring circuit 313 when the power supply unit 310 is shut down . The monitoring circuit 313 may block the monitoring current supplied from the battery pack 311 under the control of the controller 320. [

The monitoring circuit 313 can control the monitoring power supplied from the plurality of battery cells based on whether or not the operation power is supplied to at least one component of the mobile X-ray apparatus 300. Specifically, when the operation power is supplied to the control unit 320 of the mobile X-ray apparatus 300, the monitoring circuit 313 receives the monitoring power from the plurality of battery cells and can monitor the voltages of the plurality of battery cells . On the other hand, when operation power is not supplied to the components of the mobile x-ray apparatus 300, the monitoring circuit 313 can shut off the monitoring power supplied from the plurality of battery cells.

The components of mobile X-ray device 300 and the operation of each component are described in detail in FIG. The specific procedure by which the monitoring circuit 313 cuts off the monitoring power is described in FIGS. 7 and 8. FIG.

The mobile X-ray apparatus 400 shown in FIG. 4 may correspond to the mobile X-ray apparatus 100 described with reference to FIG. 1 and the mobile X-ray apparatus 300 described with reference to FIG. Therefore, the description of the mobile X-ray apparatus 400 that overlaps the mobile X-ray apparatus 100 and the mobile X-ray apparatus 300 will be omitted.

4, the mobile X-ray apparatus 400 may include a power unit 410, a control unit 420, an X-ray irradiating unit 430, an input unit 440, an output unit 450, and a communication unit 460. Not all illustrated components are required. The mobile x-ray apparatus 400 can be implemented by a larger number of components than the illustrated components, and the mobile x-ray apparatus 400 can be implemented by fewer components. The power supply unit 410 may include a battery pack 411, a battery management unit 412, a monitoring circuit 413, a power cutoff switch 414, and a main converter 415, but is not limited thereto.

The battery pack 411 may supply at least one component included in the mobile X-ray apparatus 400 with operating power required for X-ray imaging.

The battery pack 411 may include a plurality of battery cells 411-1, 411-2, 411-3, 411-4, 411-5, and 411-6, and the battery cells 411-1, 411-2, 411-3, 411-4, 411-5, and 411-6 may be formed of an anode, a cathode, and an electrolyte. Specifically, the plurality of battery cells 411-1, 411-2, 411-3, 411-4, 411-5, and 411-6 are formed into a cell string in which a plurality of battery cells are arranged in series. .

Further, the battery pack 411 may be a secondary battery that can be recharged by charging. For example, the battery pack 411 may be constituted by a lithium ion battery. The lithium ion battery may be lithium cobalt oxide or lithium iron phosphate (LiFePO 4) as the anode, and graphite may be used as the cathode. The lithium ion battery may have a structure in which a plurality of battery cells are coupled and connected. For example, a lithium-ion battery may be composed of 88 series couplings.

The battery management unit 412 may control the operation power to be supplied from the battery pack 411 to at least one component of the mobile X-ray apparatus 400. Also, the battery management unit 412 can detect the state of the battery pack 411, such as the voltage and the temperature. For example, the battery management unit 412 may include a battery stack monitor circuit capable of monitoring the total voltage of the battery pack 411 and the temperatures of a plurality of battery cells included in the battery pack 411 .

The battery management unit 412 can operate the protection circuit for the battery pack 411 based on the state of the battery pack 411. [ That is, the battery management unit 412 can operate the protection circuit to prevent the dangerous state or damage of the battery pack 411 based on the state of the battery pack 411. For example, the battery management unit 412 can operate the protection circuit against at least one of overdischarge, overcurrent, overheat, and unbalancing between battery cells based on the state of the battery pack 411. [ Here, the protection circuit may mean at least one of a device, a module, and a program that operates to prevent the dangerous state or possibility of damage of the battery pack 411.

Apart from the battery management unit 412, the monitoring circuit 413 can monitor the voltages of the plurality of battery cells. The monitoring circuit 413 may transmit data or signals related to the result of monitoring the voltage of the plurality of battery cells to the battery management unit 412 or the control unit 420. [ In addition, the monitoring circuit 413 can control the monitoring power supplied from the plurality of battery cells based on whether the operating power is supplied to at least one component of the mobile X-ray apparatus 400. [

4, the monitoring circuit 413 is included in the battery management unit 412 so that the battery management unit 412 can monitor the operation of the monitoring circuit 413 It is possible to control the overall operation or the operation of the monitoring circuit 413 described below. Hereinafter, the battery management unit 412 and the monitoring circuit 413 will be described separately.

The control unit 420 may control an operation of the mobile radioconjunctive device 400 based on the operation power. The control unit 420 corresponds to the control unit 120 described with reference to FIG. 1, and a detailed description thereof will be omitted.

The control unit 420 may control the operation of each component included in the mobile X-ray apparatus 400 to perform an operation required for X-ray imaging. For example, the control unit 420 may control the photographing timing, photographing conditions, and the like of the X-ray irradiating unit 430 according to the control command input from the user, and may use the image data received from the X- Data can be generated. In addition, the control unit 420 may control the position and posture of the X-ray irradiating unit 430 according to the imaging protocol and the position of the object.

The control unit 420 may include a memory for storing a program for performing the above-described operations and operations described later, and a processor for executing the stored program.

When the power supply unit 410 is shut down, the control unit 420 can control the monitoring circuit 413 so that the monitoring power supplied from the plurality of battery cells to the monitoring circuit 413 is shut off. The monitoring circuit 413 may block the monitoring current supplied from the battery pack 411 under the control of the controller 420. [

The power off switch 414 can cut off the operation power supplied from the battery pack 411 to the mobile X-ray apparatus 400. In one embodiment, the power off switch 414 may be implemented as a circuit breaker.

The main converter 415 can convert the power supplied from the battery pack 411 into a power for operating power of the mobile X-ray apparatus 400. The main converter 415 may be one type of DC-DC converter, but is not limited thereto.

Meanwhile, the monitoring circuit 413 can divide a plurality of battery cells into a plurality of groups and monitor the voltages of the battery cells included in each group. The monitoring circuit 413 may include sub-monitoring circuits 413-1 and 413-2 that receive monitoring power from the battery cells included in each group. The block diagram of the monitoring circuit 413 shown in FIG. 4 is one example, and the mobile X-ray apparatus 400 has a larger number of sub-monitoring circuits 413-1 and 413-2 than the sub- Monitoring circuits.

Each of the sub monitoring circuits 413-1 and 413-2 monitors whether or not the voltage of a predetermined battery cell among the battery cells monitored by the sub monitoring circuits 413-1 and 413-2 is discharged to a predetermined voltage or less can do.

For example, the first sub-monitoring circuit 413-1 can monitor the voltages of the battery cells 411-1, 411-2, and 411-3 allocated to the first sub-monitoring circuit 413-1 . Also, the second sub-monitoring circuit 413-2 can monitor the voltages of the battery cells 411-4, 411-5, and 411-6 allocated to the second sub-monitoring circuit 413-2. Further, each of the sub-monitoring circuits 413-1 and 413-2 can monitor the voltage of a greater number of battery cells or a smaller number of battery cells than the number of battery cells shown in Fig.

Each of the sub monitoring circuits 413-1 and 413-2 can transmit data on the result of monitoring whether or not the voltage of a predetermined battery cell is discharged to a predetermined voltage or less through the communication interface to the control unit 420. [

In addition, each of the sub-monitoring circuits 413-1 and 413-2 may include an element for controlling the monitoring power supplied from the battery cells to be monitored.

For example, the device may be a switching device such as a FET device. It should be understood by those skilled in the art that the element may correspond to a device capable of performing a switching function in addition to the above-mentioned FET element. That is, the switching device may be any device used to shut off the monitoring power supplied from the battery cells.

When the power supply unit 410 is shut down, the control unit 420 turns off the switching elements of the sub monitoring circuits 413-1 and 413-2 and supplies them to the sub monitoring circuits 413-1 and 413-2 Can be controlled so that the monitoring power is cut off.

As another example, the device may be a converter that converts the power supplied from the main converter 415 to a power for the monitoring power of the sub-monitoring circuit corresponding to the device. Here, the main converter 415 and the converter may be one kind of DC-DC converter, but are not limited thereto. When the power supply unit 410 is shut down, the control unit 420 turns off the power of each of the sub-monitoring circuits 413-1 and 413-2 and supplies power to each of the sub-monitoring circuits 413-1 and 413-2 It is possible to control so that the monitoring power supplied is cut off.

Each of the sub monitoring circuits 413-1 and 413-2 is provided with a monitoring power supply for supplying power to each of the sub monitoring circuits 413-1 and 413-2, It can be designed to be separated from the power source.

When the operation power supplied to the mobile X-ray apparatus 400 is cut off by the power cut-off switch 414, the controller 420 determines whether the power supplied to the main converter 415 is cut off, It is possible to determine whether or not the power supplied to the power source is shut off. The control unit 420 may determine whether the operation power supplied to at least one component of the mobile X-ray apparatus 400 is blocked based on the determination results.

Since the X-ray irradiating unit 430 corresponds to the X-ray irradiating unit 110 described in FIG. 1, a detailed description will be omitted.

The X-ray irradiating unit 430 is for irradiating an X-ray to a target by generating an X-ray, and may include an X-ray source for generating an X-ray and a collimator for adjusting an irradiation area of the X-ray generated from the X-ray source.

The input unit 440 can receive a command for operating the X-ray apparatus from the user and various information related to the X-ray imaging. The input unit 440 may include, but is not limited to, a keyboard, a mouse, a touch screen, a voice recognizer, a fingerprint recognizer, an iris recognizer, and the like. The control unit 420 may control or manipulate the X-ray apparatus based on the information input to the input unit 440.

The output unit 450 may output predetermined information so that the user can recognize information through at least one sensation such as tactile, visual, and auditory. The output unit 450 can output photographing related information such as an inspection of the X-ray under the control of the control unit 420. The output unit 450 may include the display unit 152 described with reference to FIG. Alternatively, the output unit 450 may output a speaker (not shown) that outputs an audio signal.

When the output unit 450 includes the display unit 152, the display unit 152 can display a screen for guiding the user's input, an X-ray image, a screen showing the state of the mobile X-ray apparatus 400, have. The output unit 450 may output data related to the voltage of the battery cells monitored by the battery management unit 412 or the monitoring circuit to the screen.

The communication unit 460 may control the respective components of the mobile X-ray apparatus 400 to perform communication with each other. Each of the components of the mobile X-ray apparatus 400 can perform communication in accordance with a CAN (Controller Area Network) protocol, can communicate with a high-speed digital interface such as LVDS (Low Voltage Differential Signaling), asynchronous serial Communication may be performed according to a low-level network protocol such as communication, error-correcting serial communication, or the like. It should be understood by those skilled in the art that each of the configurations of the mobile X-ray apparatus 400 can perform communication according to a protocol method other than the above-mentioned protocol.

The mobile X-ray apparatus 400 includes a central processing unit and performs operations of the power unit 410, the control unit 420, the X-ray examination unit 430, the input unit 440, the output unit 450, and the communication unit 460 as a whole Can be controlled. The central processing unit may be implemented as an array of a plurality of logic gates, or may be implemented as a combination of a general purpose microprocessor and a memory in which a program executable in the microprocessor is stored. It will be appreciated by those skilled in the art that the present invention may be implemented in other forms of hardware.

Hereinafter, the contents of the mobile X-ray apparatus 400 may be understood by those skilled in the art without departing from the spirit and scope of the present invention. Is not limited by the name or physical / logical structure of a particular configuration.

As shown in FIG. 5A, the battery pack 411 is composed of five battery cells, and can be connected to one monitoring circuit 413. The monitoring circuit 413 may monitor the voltages of the five battery cells. The battery pack 411 may be connected to the controller 420 so that the operation power of the mobile X-ray apparatus 400 is supplied to the controller 420. In this case, the power source used by the monitoring circuit 413 and the control unit 420 is the same.

Therefore, when the power supplied to the control unit 420 is cut off by the power off switch 414, the power supplied to the monitoring circuit 413 is also cut off.

5B, the battery pack 411 is composed of 20 battery cells and can be connected to the four sub-monitoring circuits 413-1, 413-2, 413-3, and 413-4. The first sub monitoring circuit 413-1 monitors the voltage of the battery cells 501 classified as the first group among the 20 battery cells and the second sub monitoring circuit 413-2 monitors the voltage of the battery cells 501 The third sub monitoring circuit 413-3 monitors the voltage of the battery cells 503 classified into the second group among the twenty battery cells, 4 sub-monitoring circuit 414-4 can monitor the voltage of the battery cells 504 classified into the fourth group among the 20 battery cells.

In this case, the power source used in each of the four sub-monitoring circuits 413-1, 413-2, 413-3, and 413-4 is divided into four sub-monitoring circuits 413-1, 413-2, 413-3, and 413 -4 are supplied from the voltages of the cell strings arranged in series. That is, the power source used in each of the four sub-monitoring circuits 413-1, 413-2, 413-3, and 413-4 is supplied from the partial voltage of the cell string in which 20 battery cells are arranged in series.

In addition, the battery pack 411 may be connected to the controller 420 so that the operation power of the mobile X-ray apparatus is supplied to the controller 420. In this case, the power source used in the control unit 420 is supplied from the total voltage of the cell strings in which 20 battery cells are arranged in series.

Therefore, since the power source used in the control unit 420 and the power source used in each of the four sub-monitoring circuits 413-1, 413-2, 413-3, and 413-4 are different from each other, The power supplied to each of the four sub-monitoring circuits 413-1, 413-2, 413-3, and 413-4 is not blocked even if the power supplied to the control unit 420 is shut off. The power supplied to the sub-monitoring circuits 413-1, 413-2, 413-3, and 413-4 is not shut off, so that the monitoring power source leaks.

6 is a diagram for explaining a process in which power is leaked from a monitoring circuit even if the power supply unit is shut down according to an embodiment. The circuit diagram shown in FIG. 6 is briefly shown to explain the process of power leakage in the monitoring circuit, and other elements other than the elements shown in FIG. 6 for operation of the mobile X-ray apparatus can be included in the technical field It will be appreciated by one of ordinary skill in the art.

The battery pack 411 may include a plurality of battery cells, and the plurality of battery cells may be arranged in series to form a cell string. Since the number of battery cells that can be monitored by the monitoring circuit is limited, a plurality of battery cells can be divided into a plurality of groups. That is, the monitoring circuit may be composed of a plurality of sub-monitoring circuits, and each of the plurality of sub-monitoring circuits may monitor a voltage of battery cells included in a predetermined group.

For example, a plurality of battery cells may be grouped by 11, and a predetermined sub-monitoring circuit may monitor the voltages of 11 battery cells included in a predetermined group.

6, the first sub-monitoring circuit 620-1 monitors the voltage of the battery cells 610-1 allocated to the first sub-monitoring circuit 620-1, and the second sub- The third sub monitoring circuit 620-2 monitors the voltage of the battery cells 610-2 allocated to the second sub monitoring circuit 620-2 and the third sub monitoring circuit 620-3 monitors the voltage of the third sub monitoring circuit 620-2 -3), and the fourth sub-monitoring circuit 620-4 monitors the voltage of the battery cells 610-4 assigned to the fourth sub-monitoring circuit 620-4, Can be monitored.

And, the monitoring circuit needs a monitoring power supply to monitor the voltages of the plurality of battery cells, and the monitoring power supply can be supplied from a plurality of battery cells. Specifically, the first sub-monitoring circuit 620-1 may include a (+) power input terminal 613 and a (-) power input terminal 615. [ The first sub-monitoring circuit 620-1 may receive monitoring power from the battery cells 610-1 allocated to the first sub-monitoring circuit 620-1.

The main converter 415 can convert the power supplied from the battery pack 411 to a power for operating power of the mobile X-ray apparatus. Specifically, the main converter 415 is arranged in series to down the power supplied from the battery cells 610-1, 610-2, 610-3, and 610-4 formed of cell strings to supply the operation power of the mobile x- Can be generated. The main converter 415 can supply the operation power generated by the control unit 420. [

6, each of the sub-monitoring circuits 620-1, 620-2, 620-3, and 620-4 includes sub-monitoring circuits 620-1, 620-2, 620-3 And 620-4 may be designed to be separated from the operation power supplied to the controller 200 to drive the mobile X-ray apparatus 400. [

On the other hand, when the power supply unit 410 is shut down, the power supplied to the main converter 415 is also shut off. When the power supplied to the main converter 415 is cut off, the power supplied to the control unit 420 is also cut off. That is, when the power supply unit 410 is shut down, the power of the mobile X-ray apparatus is turned off.

However, referring to the connection structure of the first sub-monitoring circuit 620-1 shown in FIG. 6 and the battery cells 610-1 allocated to the first sub-monitoring circuit 620-1, the battery cells 610- 1 are connected to a (+) power input terminal 613 and a (-) power input terminal 615. Due to the

structures

614 and 615 in which the battery cells 610-1 are directly connected to the positive power input terminal 613 and the negative power input terminal 615, the power supply unit 410 is shut down and the control unit 420 The first sub monitoring circuit 620-1 can discharge the voltage of the battery cells 610-1 allocated to the first sub monitoring circuit 620-1. Similarly, the other sub-monitoring circuits 620-2, 620-3, and 620-4 are also connected to the battery cells 620-2, 620-3 , 620-4 can be discharged. In an abnormal case, an atrial transfer may occur in the battery cell.

Accordingly, when the power supply unit 410 is shut down and the power supplied to the control unit 420 is shut off, the monitoring power supplied to each of the sub monitoring circuits needs to be shut off. 7 and 8, a method of shutting down the monitoring power supplied to the monitoring circuit as the power supply unit 410 is shut down will be described.

7 is a diagram for explaining a process in which power is cut off in the monitoring circuit as the power source unit is shut down according to an embodiment. The circuit diagram shown in FIG. 7 is briefly shown to explain the process of power-off in the monitoring circuit, and other elements may be included in addition to the elements shown in the figure for the operation of the mobile X-ray apparatus. It will be appreciated by one of ordinary skill in the art.

On the other hand, if the total voltage of the cell strings for the plurality of battery cells arranged in series is within a predetermined range of the allowable input voltage in the monitoring circuit, the mobile x-ray apparatus, according to the circuit diagram shown in Fig. 7, Can be controlled.

The circuit diagram shown in Fig. 7 differs from the circuit diagram shown in Fig. 6 in that a switching element is added between the (+) power source input terminal of the submonitoring circuit and the battery cells allocated to the submonitoring circuit. Specifically, the first sub-monitoring circuit 620-1 includes a switching element (not shown) for controlling the interruption or supply of the monitoring power applied from the battery cells 610-1 allocated to the first sub-monitoring circuit 620-1 710). Here, the switching element 710 has a function of opening and closing a circuit, and may be a switching element such as an FET. It will be understood by those skilled in the art that the device can be a device capable of performing a switching function in addition to the above-mentioned FET device. That is, the switching device may be any device used to shut off the monitoring power supplied from the battery cells.

Similarly, the other sub-monitoring circuits 620-2, 620-3, and 620-4 are also connected to the battery cells 620-2, 620-3 , 620-4) for controlling the shutdown or supply of monitoring power.

7, each of the sub-monitoring circuits 620-1, 620-2, 620-3, and 620-4 includes sub-monitoring circuits 620-1, 620-2, 620-3, 620-4 may be designed to be separated from the operation power supplied to the controller 200 to drive the mobile x-ray apparatus 400. [

When the power supply unit 410 is shut down, the power supply to the main converter 415 and the power supply to the control unit 420 are cut off. The control unit 420 of the mobile X-ray apparatus 400 may control the monitoring circuit so that the monitoring power supplied from the plurality of battery cells is shut off.

More specifically, the controller 420 of the mobile X-ray apparatus 400 turns off the switching element 710 of the first sub-monitoring circuit 620-1 to control the monitoring power supplied from the battery cells 610-1 to be shut off can do. At the same time, the controller 420 of the mobile X-ray apparatus 400 turns off the switching elements of the other sub-monitoring circuits 620-2, 620-3, and 620-4 to turn on the battery cells 620-2, 620-3, 620 -4 can be controlled to be shut off.

FIG. 8 is a diagram for explaining a process in which power is shut off in the monitoring circuit as the power source unit is shut down according to another embodiment. The circuit diagram shown in FIG. 8 is briefly shown in order to explain the power-off process in the monitoring circuit, and other elements may be included in the mobile X-ray apparatus in order to operate the apparatus. It will be appreciated by one of ordinary skill in the art.

On the other hand, if the overall voltage of the cell string for a plurality of battery cells arranged in series does not meet a predetermined range of input voltages acceptable in the monitoring circuit, then the mobile x-ray apparatus can be supplied to the monitoring circuit in accordance with the circuit diagram shown in Fig. Can be controlled.

The circuit diagram shown in Fig. 8 differs from the circuit diagram shown in Fig. 6 in that the (+) power input terminal and the (-) power input terminal of the submonitoring circuit are not directly connected to the battery cells assigned to the sub- And to a converter that is powered from the converter.

Specifically, the (+) power source input terminal 613 and the (-) power source input terminal 615 of the first sub-monitoring circuit 620-1 may be connected to the first converter 810-1. Here, the first converter 810-1 can convert the power supplied from the main converter to the power for the monitoring power of the first sub-monitoring circuit 620-1. For example, the main converter 415 can receive 360 V power from the battery pack. The first converter 810-1 can receive the voltage of 24V down from the main converter 415 and the voltage required for monitoring through the

power input terminals

613 and 615 of the first sub monitoring circuit 620-1 Can be supplied.

Similarly, the (+) power input terminal and the (-) power input terminal of each of the other sub monitoring circuits 620-2, 620-3, and 620-4 are connected to the sub monitoring circuits 620-2, 620-3, 810-3, and 810-4, which are allotted to the converter 810-2, 810-3, and 810-4, respectively.

8, each of the sub-monitoring circuits 620-1, 620-2, 620-3, and 620-4 includes sub-monitoring circuits 620-1, 620-2, 620-3, 620-4 may be designed to be separated from the operation power supplied to the controller 200 to drive the mobile x-ray apparatus 400. [ That is, the converters 810-2, 810-3, and 810-4 allocated to the sub-monitoring circuits 620-2, 620-3, and 620-4 may be designed separately from the main converter 415. [

More specifically, the control unit 420 of the mobile X-ray apparatus 400 turns off the power of the first converter 810-1 of the first sub-monitoring circuit 620-1, So that the monitoring power supplied to the controller can be shut off. At the same time, the control unit 420 of the mobile X-ray apparatus 400 turns off the converters 810-2, 810-3, and 810-4 of the other sub monitoring circuits 620-2, 620-3, and 620-4 , And the monitoring power supplied to the sub monitoring circuits 620-2, 620-3, and 620-4 is shut off.

The operations performed in each step included in the power control method in the mobile X-ray apparatus shown in FIG. 9 are the same as those performed in the

mobile X-ray apparatus

300, 400 according to the embodiment of the present disclosure described with reference to FIGS. . Therefore, the description of the power control method in the mobile radiography apparatus shown in FIG. 9 will not be repeated.

9 includes a mobile X-ray apparatus including a battery pack including a plurality of battery cells, a monitoring circuit for monitoring a voltage of the plurality of battery cells, and a battery management unit, Power control method.

Specifically, in step S910, the mobile X-ray apparatus may monitor a battery management unit that controls operation power to be supplied from the battery pack to at least one component of the mobile X-ray apparatus.

In step S920, the mobile X-ray apparatus can determine whether the power source unit has been shut down. Specifically, the mobile x-ray apparatus can determine whether the operation power is cut off by the power-off switch. Also, the mobile x-ray apparatus can determine whether the power supplied to the main converter is shut off. Here, the main converter is a device for converting the power supplied from the battery pack to a power source for operating power. In addition, the mobile X-ray apparatus can determine whether the power supplied to the control unit is shut off.

On the other hand, if the power supply unit is shut down, the mobile radiography apparatus can perform the operation according to step S930. On the other hand, if it is determined that the power supply unit is not shut down, the mobile X-ray apparatus can perform the operation according to the flowchart shown in FIG.

In step S930, the mobile X-ray apparatus can shut off monitoring power supplied from the plurality of battery cells to the monitoring circuit.

Here, the monitoring circuit may divide a plurality of battery cells into a plurality of groups to monitor the voltages of the battery cells included in each group. In addition, the monitoring circuit may include sub-monitoring circuits that are supplied with monitoring power from the battery cells included in each group.

Each of the sub-monitoring circuits may include an element that controls the monitoring power supplied from the battery cells being monitored.

For example, the device may be a switching device. The mobile X-ray apparatus can turn off each element of the sub-monitoring circuits and control the monitoring power supplied to each of the sub-monitoring circuits to be shut off.

As another example, the device may be a converter that converts the power supplied from the main converter to a power for the monitoring power of the sub-monitoring circuit corresponding to the device. Here, the main converter is a device that converts the power supplied from the battery pack to a power source for operating power of the mobile X-ray apparatus. The mobile x-ray apparatus can turn off the power of each of the sub-monitoring circuits and control the monitoring power supplied to each of the sub-monitoring circuits to be shut off.

In step S1010, the mobile X-ray apparatus can monitor the voltage of a predetermined battery cell among the plurality of battery cells. In one embodiment, the mobile x-ray apparatus can monitor whether the voltage of a given battery cell is discharged below a predetermined voltage.

In step S1020, if there is a cell discharged below a predetermined voltage among a plurality of battery cells, the mobile X-ray apparatus can control to stop the operation of the mobile X-ray apparatus.

In step S1030, if there is no cell discharged below a predetermined voltage among the plurality of battery cells, the mobile X-ray apparatus continuously monitors whether or not the voltage of the plurality of battery cells is discharged to a predetermined voltage or less, So that it can be controlled to be driven.

The image forming apparatus 100 described above can be implemented as a hardware component, a software component, and / or a combination of a hardware component and a software component. For example, the apparatus and components described in the embodiments may be implemented within a computer system, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA) A programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

Claims

A mobile X-ray apparatus including a power supply unit for supplying operation power,

The power supply unit,

A battery pack comprising a plurality of battery cells;

A battery management unit for controlling the operation power to be supplied from the battery pack to at least one component of the mobile X-ray apparatus; And

A monitoring circuit for monitoring a voltage of said plurality of battery cells and for controlling monitoring power supplied from said plurality of battery cells based on whether said operating power is supplied to at least one component of said mobile x- Mobile X-ray device.
The method according to claim 1,

Wherein the control unit controls operation of the mobile X-ray apparatus based on the operation power source and controls the monitoring circuit to shut down the monitoring power supplied from the plurality of battery cells to the monitoring circuit when the power unit is shut down Wherein the mobile X-ray apparatus further comprises:
3. The method of claim 2,

Wherein the monitoring circuit blocks the monitoring current supplied from the plurality of battery cells under the control of the control unit.
3. The apparatus of claim 2,

Monitoring sub-monitoring circuits for monitoring the voltages of the battery cells included in each of the plurality of groups of the battery cells and receiving the monitoring power from the battery cells included in each of the groups,

Each of the sub-monitoring circuits including an element for controlling the monitoring power supplied from the monitored battery cells.
5. The method of claim 4,

The device is characterized by being a switching device,

When the power supply unit is shut down,

Wherein the control unit turns off the switching elements of each of the sub monitoring circuits to control the monitoring power supplied to each of the sub monitoring circuits to be cut off.
5. The method of claim 4,

Wherein the power supply unit further includes a main converter for converting power supplied from the battery pack to power for operating power of the mobile X-ray apparatus,

The device is characterized by being a converter for converting a power supplied from the main converter into a power for monitoring power of a sub-monitoring circuit corresponding to the device,

When the power supply unit is shut down,

Wherein the control unit turns off the power of each of the sub-monitoring circuits and controls the monitoring power supplied to each of the sub-monitoring circuits to be cut off.
4. The apparatus of claim 3, wherein each of the sub-

Wherein the monitoring power supplied to each of the sub-monitoring circuits is designed to be separated from the operating power supplied to drive the mobile x-ray apparatus.
The method according to claim 1,

Wherein the plurality of battery cells are arranged in series and formed of cell strings.
The power supply unit according to claim 2,

And a power cut-off switch for cutting off operation power supplied from the battery pack to the mobile X-ray apparatus.
10. The method of claim 9,

When the operation power is cut off by the power cutoff switch,

Determines whether the power supplied to the main converter for converting the power supplied from the battery pack to the power for the operation power of the mobile X-ray apparatus is shut off, and determines whether the power supplied to the control unit of the mobile X-ray apparatus is shut off And determines whether the operation power supplied to at least one component of the mobile X-ray apparatus is shut off based on the determination results.
1. A power control method for a mobile x-ray apparatus, comprising: a battery pack including a plurality of battery cells; a monitoring circuit for monitoring a voltage of the plurality of battery cells; and a battery management unit and a power unit for supplying operation power,

a) monitoring the power supply for controlling the operation power to be supplied to at least one component of the mobile X-ray apparatus from the battery pack;

b) determining whether the power supply unit has been shut down; And

c) shutting down monitoring power supplied to the monitoring circuit from the plurality of battery cells when the power supply unit is shut down.
12. The method of claim 11,

The monitoring circuit monitors the voltages of the battery cells included in each group by dividing the plurality of battery cells into a plurality of groups and supplies the monitoring power to the sub-monitoring circuits Including,

Wherein each of the sub-monitoring circuits includes an element that controls the monitoring power supplied from the monitored battery cells.
13. The method of claim 12,

The device is characterized by being a switching device,

The step c)

c1) turning off the elements of the sub-monitoring circuits and controlling the monitoring power supplied to each of the sub-monitoring circuits to be turned off.
13. The method of claim 12,

Wherein the power supply unit includes a main converter that converts power supplied from the battery pack to power for operating power of the mobile X-ray apparatus,

The device is characterized by being a converter for converting a power supplied from the main converter into a power for monitoring power of a sub-monitoring circuit corresponding to the device,

The step c)

c2) turning off the power of each of the sub-monitoring circuits, and controlling the monitoring power supplied to each of the sub-monitoring circuits to be shut off.
A power control method for a mobile X-ray apparatus including a battery pack including a plurality of battery cells, a monitoring circuit for monitoring a voltage of the plurality of battery cells, and a battery management unit and a power unit for supplying operation power, A recording medium on which a program including instructions is recorded,

a) monitoring the power supply for controlling the operation power to be supplied to at least one component of the mobile X-ray apparatus from the battery pack;

b) determining whether the power supply unit has been shut down; And

and c) shutting down the monitoring power supplied to the monitoring circuit from the plurality of battery cells when the power supply unit is shut down.