KR102372176B1 - temperature measuring device using fiber optic cable - Google Patents

Abstract

The present invention relates to an optical fiber cable temperature measuring device, and more particularly, to an optical fiber cable temperature measuring device applied to a multi-stage type power device module such as a battery storage device.
An optical fiber cable temperature measuring device according to an embodiment of the present invention is an optical fiber cable temperature measuring device applied to a power device having a plurality of power device modules, comprising: an optical fiber cable measuring unit provided in each power device module; an optical fiber cable inserted and installed in each of the optical fiber cable measuring units; and a controller connected to one end of the optical fiber cable to measure the temperature.

Description

Fiber optic cable temperature measuring device {temperature measuring device using fiber optic cable}

The present invention relates to an optical fiber cable temperature measuring device, and more particularly, to an optical fiber cable temperature measuring device applied to a multi-stage type power device module such as a battery storage device.

In general, an energy storage system (ESS) refers to a device that stores energy using a physical medium. Energy storage can be largely divided into a physical energy storage method and a chemical energy storage method according to the storage method. Representative physical energy storage includes pumping-up power generation, compressed air storage, and flywheel. Chemical energy storage mainly uses batteries, such as lithium-ion batteries and lead-acid batteries. , and sodium sulfur (NaS) batteries.

As an example of an energy storage device, a battery type ESS is referred to as a BESS (Battery Energy Storage System), and in general, the ESS refers to a BESS.

Energy storage devices using batteries generate a lot of heat, so it is important to manage heat to prevent fires. To this end, the energy storage device is usually provided with a temperature sensor therein.

Referring to FIG. 1 , an energy storage device (ESS) according to the related art will be described. An energy storage device using a battery is usually composed of a cell, a module, and a rack unit. Certification for energy storage devices using batteries is configured in units of racks. The energy storage device using the battery is formed in the form of a rack (1). The rack 1 is configured in a form in which the battery modules 2 are stacked in multiple stages on a cabinet-type structure made of a beam or an iron plate. Here, each battery module 2 is composed of a combination of a plurality of battery cells (not shown). At this time, it is common that a temperature sensor (not shown) for self-temperature measurement is provided inside each battery module 2 .

However, when the temperature sensor fails, the temperature measurement of the battery module 2 becomes impossible. In addition, since the temperature sensor is provided inside the battery module 2, it is not possible to measure the temperature of the space between the adjacent battery modules (2). That is, since the temperature measurement around the battery module (2) is not made, the temperature management for the rack (1) is not made.

The present invention has been devised to solve the above problems, and an object of the present invention is to provide an optical fiber cable temperature measuring device capable of measuring the temperature around a multi-stage type power device module.

Another object of the present invention is to provide an optical fiber cable temperature measuring device capable of measuring each of the power device modules arranged in multiple stages.

Another object of the present invention is to provide an optical fiber cable temperature measuring device that is easy to assemble.

An optical fiber cable temperature measuring device according to an embodiment of the present invention is an optical fiber cable temperature measuring device applied to a power device having a plurality of power device modules, comprising: an optical fiber cable measuring unit provided in each power device module; an optical fiber cable inserted and installed in each of the optical fiber cable measuring units; and a controller connected to one end of the optical fiber cable to measure the temperature.

Here, the optical fiber cable measuring unit is characterized in that it includes a cable mount in which the optical fiber cable is inserted and installed.

In addition, the cable mount is characterized in that it includes a mount body formed in a rectangular frame shape and a terminal bar disposed across the mount body.

In addition, the cable mount is characterized in that it has a plurality of openings.

In addition, the mounting body is characterized in that it is composed of a pair of crossbars arranged in parallel and a pair of vertical bars arranged in parallel.

In addition, the end bar is characterized in that it is respectively arranged in the center portion of the pair of crossbars.

In addition, it is characterized in that the mounting body is provided with a stopper that can limit the entry when inserted into the power device module.

In addition, a plurality of cable fixing grooves to which the optical fiber cable is fixed are formed on the lower surface of the end bar.

In addition, the cable fixing groove is characterized in that the side cross-section is formed as a part of a circle.

In addition, it is characterized in that a plurality of the cable fixing groove is formed in the vertical bar.

In addition, the cable fixing groove formed in the end bar is formed in parallel with respect to the crossbar, and the cable fixing groove formed in the vertical rod is formed in an oblique direction with respect to the crossbar.

In addition, the cable mount is characterized in that it is composed of an upper cable mount formed in a frame shape and a lower cable mount formed in a frame shape and coupled to correspond to the upper cable mount.

In addition, the upper cable mount is characterized in that it is rotatably coupled to the lower cable mount.

And, the upper cable mount or the lower cable mount is characterized in that the position mark is formed so that the optical fiber cable can be installed.

According to the optical fiber cable temperature measuring device according to an embodiment of the present invention, it is possible to easily measure the temperature of the power device and perform thermal management by the optical fiber cable measuring unit provided for each power device module.

In addition, the optical fiber cable temperature measuring device can be applied to each power device module by the optical fiber cable measuring unit, and thus can be applied to each power device module arranged in multiple stages.

In addition, since the optical fiber cable temperature measuring device is provided in the form of a unit in which the optical fiber cable is mounted on the optical fiber cable measuring unit, it is easy to assemble and install it in a power device.

1 is a perspective view of a power device according to the prior art.
2 is a perspective view of a power device equipped with an optical fiber cable temperature measuring device according to an embodiment of the present invention.
3 is a plan view of a state in which an optical fiber cable temperature measuring device is installed in any one of the power device modules in FIG. 2 .
4 is a perspective view of an optical fiber cable temperature measuring unit according to an embodiment of the present invention.
FIG. 5 is a perspective view of the optical fiber cable measuring unit in FIG. 4 .
6 is a bottom view of an optical fiber cable temperature measuring apparatus according to another embodiment of the present invention.
7 is a perspective view of the optical fiber cable temperature measuring unit in FIG. 6 .
8 is a side view of an optical fiber cable temperature measuring unit according to another embodiment of the present invention.
9 is a perspective view of the optical fiber cable temperature measuring unit in FIG. 8 .
10 is a perspective view of an optical fiber cable temperature measuring unit according to another embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings, which is intended to be described in detail enough that a person of ordinary skill in the art to which the present invention pertains can easily practice the invention, thereby It does not mean that the technical spirit and scope of the invention are limited.

An optical fiber cable temperature measuring device according to each embodiment of the present invention will be described in detail with reference to the drawings.

<First embodiment>

An optical fiber cable temperature measuring apparatus according to an embodiment of the present invention includes a power device 10 provided with a plurality of power device modules 20; a plurality of optical fiber cable measuring units 130 provided in each power device module 20; an optical fiber cable 40 inserted and installed in each of the optical fiber cable measuring units 130; and a control unit 60 connected to one end of the optical fiber cable 40 to measure the temperature.

A power device 10 is provided. The power device 10 may be configured in the form of a rack 11 so that a plurality of power device modules 20 can be installed in multiple stages. The rack 11 may include an upper plate and a lower plate and a frame connected and supported between the upper plate and the lower plate. A plurality of power device modules 20 are installed in multiple stages in the rack 11 . Here, an energy storage device may be mentioned as an example of the power device. In addition, a battery module may be mentioned as an example of the power device module.

The power device 10 is shown in FIG. 2 . The power device 10 is configured in the form of a rack as described above.

A plurality of support plates 12 are provided in the rack 11 so that each power device module 20 can be installed and supported.

In addition, the rack 11 is provided with a support plate 13 so that the optical fiber cable measuring unit 130 can be installed. The support plate 13 may be provided above or below each power device module 20 . Accordingly, the optical fiber cable measuring unit 130 may be inserted and installed between the power device module 20 and the support plate 13 .

A fiber optic cable measuring unit 130 is shown in FIGS. 3 and 4 . Also, the cable mount 131 is shown in FIG. 5 . An optical fiber cable measuring unit 130 is provided to measure the temperature between the power device module 20 and the adjacent power device module 20 . The optical fiber cable measuring unit 130 is disposed to face one surface (eg, the upper surface) of each power device module 20 or is installed to have a predetermined gap, so that the surface temperature of each power device module 20 or the power device module ( 20) to measure the space temperature between them.

The fiber optic cable measuring unit 130 may include a cable mount 131 , a fiber optic cable 40 , and a connector 50 .

A cable mount 131 is provided. The cable mount 131 includes a mount body 132 formed in a frame shape and an end bar 135 disposed across the mount body.

The mounting body 132 may be formed of a synthetic resin or a metal material. In this case, the mounting body 132 is preferably made of a material having strong heat resistance and high thermal conductivity. Accordingly, in a state in which the mounting body 132 is in contact with the upper surface of the power device module 20 , it helps to dissipate heat of the power device module 20 .

The mounting body 132 is formed in a polygonal (eg, quadrangular) frame shape. That is, most of the mounting body 132 except for the outer part is formed of the opening 133 . The area in which the mounting body 132 covers the power device module 20 is reduced by the opening 133 and has excellent ventilation.

The mount body 132 may be part of a plain plate. Alternatively, the mounting body 132 may be formed by bending a bar or a long flat plate.

The mounting body 132 has an opening 133 formed therein, so it has excellent ventilation. When viewed from the top, since most of the area of the mounting body 132 is formed with the opening 133 , the thermal resistance received from the mounting body 132 of the power device module 20 is minimized.

When the mounting body 132 is formed in a rectangular frame, it is composed of a pair of crossbars 132b disposed in parallel and a pair of vertical bars 132a disposed in parallel.

The crossbar 132b is preferably formed smaller than the width of the power device module 20, that is, the length in the horizontal direction.

The vertical bar 132a may be formed to be larger than the depth of the power device module 20 , that is, the length in the vertical direction.

The mount body 132 is provided with a stopper 134 that can restrict entry when inserted into the power device module 20 . The stopper 134 may be formed to protrude downward from both ends of the lower crossbar 132b.

The end bar 135 is provided on the mounting body 132 . The end bar 135 may be disposed between the upper crossbar 132b and the lower crosspiece 132b. For example, the end bar 135 may be disposed between the central portion of the upper crosspiece 132b and the central portion of the lower crosspiece 132b.

A plurality of cable fixing grooves 136 are formed on the lower surface of the end bar 135 . The cable fixing groove 136 is formed along the width direction on the lower surface of the end bar 135 .

The cable fixing groove 136 has a side cross-section formed as a part of a circle. In this case, the inlet may be formed smaller than the diameter of the optical fiber cable 40 . Accordingly, after the optical fiber cable 40 is installed in the cable fixing groove 136 in an interference fit manner, it is prevented from being separated from the cable fixing groove 136 .

An optical fiber cable 40 is provided. The optical fiber cable 40 is inserted and installed between the mounting body 132 and the end bar 135 . The optical fiber cable 40 is laid on the upper portion of the mount body 132 . The optical fiber cable 40 is disposed between the mount body 132 and the end bar 135 in a rolled or bent form. That is, the optical fiber cable 40 is disposed while one cable is continuously wound. The fiber optic cables 40 may be overlapped when bent.

As described above, the temperature of the periphery of the power device module 20 may be measured through the optical fiber cable 40 disposed on the cable mount 131 . The optical fiber cable 40 as a line may have a plurality of measurement points by being disposed on the cable mount 131 in a plane shape.

The method of measuring temperature using an optical fiber cable is applied to temperature measurement of conventional power underground lines and oil refinery chemical pipelines, and is also called Distributed Temperature Sensing (DTS).

Dispersion temperature measurement utilizes the proportional characteristic of temperature and wavelength, which is one of the unique characteristics of optical fibers.

There are three types of scattered waves reflected by the quartz constituting the optical fiber. These are a Rayleigh-scattering wave, a Raman-scattering wave, and a Brillouin-scattering wave. Among them, the Raman wave represents a wavelength that is directly proportional to the temperature. This can be used to measure temperature (converting the measured wavelength to temperature according to its size). Since the optical fiber cable is formed linearly, it is possible to measure the temperature by measuring the distance of each scattering frequency from the reference position (or measuring each scattering frequency for each distance).

Temperature measurement using an optical fiber cable can be measured with a resolution of 0.01°C per 1m. In addition, it is possible to measure the temperature at an interval of 0.5 m or more for meaningful analysis of scattered waves.

Accordingly, in order to secure a plurality of measurement points within a limited area of the upper portion of the power device module 20 , the optical fiber cable 40 is disposed in a bent shape.

The optical fiber cable 40 is mounted on the vertical bar 132a of the mounting body 132 and is fixed to the cable fixing groove 136 of the end bar 135 .

An example of a method of installing the optical fiber cable 40 to the mounting body 132 is as follows. The optical fiber cable 40 advances in one direction of the end bar 135 while being wound in any one of a clockwise direction or a counterclockwise direction. The optical fiber cable 40 may be wound in a spring form a plurality of times and then disposed in a form that is collapsed to one side. The optical fiber cable 40 may be wound in an elliptical shape.

The optical fiber cable 40 is mounted on a pair of vertical bars 132a. That is, the width (diameter) around which the optical fiber cable 40 is wound may be formed to be longer than the length of the crossbar 132b.

The optical fiber cable 40 may be disposed so that portions overlapping each other are formed while being wound. That is, referring to FIGS. 3 to 5 , the order in which the optical fiber cable 40 is inserted into the cable fixing groove 136 may be crossed. The first cable fixing groove 136-1, the second cable fixing groove 136-2, .. the n-th cable fixing groove 136-n from the cable fixing groove 136 close to the lower crossbar 132b. , the order of the cable fixing groove 136 to which the optical fiber cable 40 is fixed is the third cable fixing groove 136-3, the first cable fixing groove 136-1, and the fifth cable fixing groove 136. -5), the second cable fixing groove (136-2), the seventh cable fixing groove (136-7), the fourth cable fixing groove (136), the ninth cable fixing groove (136-9), the sixth cable fixing groove The grooves 136-6, .. may be fitted in the same order. At this time, from the second rotation of the optical fiber cable 40, the rule of continuation of a 5-unit groove increase and a 3-unit groove decrease toward the upper end of the end bar 135 is applied.

The optical fiber cable 40 is installed on the cable mount 131 while one cable is wound a plurality of times.

A connection member 50 is connected to the front and rear ends of the optical fiber cable 40 . Thus, one optical fiber cable measuring unit 130 as shown in FIG. 4 is completed.

Connection materials 50 are provided at both ends of the optical fiber cable 40 . Since the connection material 50 is provided on each panel member 31 and 35, the optical fiber cable measuring unit 130 can be divided into units. In addition, the connection member 50 may be set as a reference point for temperature measurement (wavelength measurement). Therefore, it can be set as a reference point of each optical fiber cable measuring unit 130 .

Connecting cables 41 and 45 are provided to connect the control unit 60 and the connecting material 50 or two adjacent connecting materials 50 . Each fiber optic cable measuring unit 130 is connected to each other by a connecting cable 45 .

The control unit 60 may be configured as a DTS server. A control unit 60 is provided to measure the wavelength measured by the optical fiber cable 40 and convert it into temperature.

The control unit 60 may display or notify when an appropriate operating temperature is set and out of the limit temperature range. For example, the display unit 61 may be provided in a part of the control unit 60 server.

<Second embodiment>

6 and 7 show an optical fiber cable temperature measuring apparatus according to another embodiment of the present invention. Fig. 6 is a bottom view of the optical fiber cable measuring unit according to the second embodiment, and Fig. 7 is a perspective view of the cable mount.

The optical fiber cable temperature measuring device includes a power device 10 provided with a plurality of power device modules 20; a plurality of optical fiber cable measuring units 230 provided in each power device module 20; an optical fiber cable 40 inserted and installed in each of the optical fiber cable measuring units 230; and a control unit 60 connected to one end of the optical fiber cable 40 to measure the temperature.

In this embodiment, different parts from the previous embodiment will be described.

The fiber optic cable measuring unit 230 includes a cable mount 231 and an optical fiber cable 40 . The cable mount 231 is formed in the form of a frame having an opening 233 . As an example, the cable mount 231 formed in the shape of a square frame is shown in FIGS. 6 and 7 .

A plurality of openings 233 are formed in the cable mount 231 . For example, the cable mount 231 is composed of two crossbars 232a and three vertical bars 232b, 232c, and 232d, so that two openings 233 are formed.

The vertical bars 232b, 232c, and 232d may be divided into a side vertical bar 232b and a central vertical bar 232c. Cable fixing grooves 236b, 236c, and 236d are formed on the lower surface of each of the vertical bars 232b, 232c, and 232d.

The optical fiber cable 40 is fitted and fixed in each of the cable fixing grooves 236b, 236c, and 236d. The optical fiber cable 40 is passed through the cable fixing groove 236b of one side vertical bar 232b, the cable fixing groove 236 of the central vertical member 232c, and the cable fixing groove 236d of the other vertical member 232d, the other side vertical rod at the top. The cable fixing groove 236d of (232d), the cable fixing groove 236 of the central vertical pole 232c, and the cable fixing groove 236b of the one side vertical pole 232b may be wound in a manner that is fitted.

Here, the cable fixing grooves 236 of the central vertical bar 232c are formed in parallel with respect to the crossbar, and the cable fixing grooves 236b and 236d of both vertical bars 232b and 232d are formed in an oblique direction with respect to the crossbar. .

At this time, the cable fixing grooves 236b and 236d of the both sides of the vertical bars 232b and 232d may be continuously arranged in a wedge shape facing each other. Here, the cable fixing groove 236b of the one side vertical bar 232b and the cable fixing groove 236d of the other side vertical member 232d may be disposed at different heights.

In this embodiment, all of the cable fixing grooves are formed in each vertical bar, so that the optical fiber cable 40 is stably fixed and supported.

<Third embodiment>

8 shows an optical fiber cable temperature measuring apparatus according to another embodiment of the present invention.

The optical fiber cable temperature measuring device includes a power device 10 provided with a plurality of power device modules 20; a plurality of optical fiber cable measuring units 330 provided in each power device module 20; an optical fiber cable 40 inserted and installed in each of the optical fiber cable measuring units 330; and a control unit 60 connected to one end of the optical fiber cable 40 to measure the temperature.

In this embodiment, different parts from the previous embodiment will be described.

The optical fiber cable measuring unit 330 is composed of cable mounts 331 and 341 and the optical fiber cable 40 . The cable mounts 331 and 341 are composed of an upper cable mount 331 and a lower cable mount 341 and are coupled to each other so as to be opened and closed. For example, the upper cable mount 331 and the lower cable mount 341 are rotatably coupled with respect to one end by a rotation connecting member 350 such as a hinge.

The upper cable mount 331 and the lower cable mount 341 are each formed in a frame shape having openings 333 and 343 . The upper cable mount 331 may follow the form of the second embodiment described above. The lower cable mount 341 may be formed in a shape corresponding to the upper cable mount 331 . That is, it may be formed in a rectangular frame shape having a plurality of cross bars 342a and a plurality of vertical bars 342b, 342c, and 342d.

Cable mounting grooves 346 corresponding to the cable mounting grooves of the upper cable mount 331 and the lower cable mount 341 are formed in the lower cable mount 341 .

The optical fiber cable 40 is inserted and installed between the cable mounting groove of the upper cable mounting unit 331 and the cable mounting groove of the lower cable mounting unit 341 .

<Fourth embodiment>

10 shows an optical fiber cable temperature measuring apparatus according to another embodiment of the present invention.

The optical fiber cable temperature measuring device includes a power device 10 provided with a plurality of power device modules 20; a plurality of optical fiber cable measuring units 430 provided in each power device module 20; an optical fiber cable 40 inserted and installed in each of the optical fiber cable measuring units 430; and a control unit 60 connected to one end of the optical fiber cable 40 to measure the temperature.

In this embodiment, different parts from the previous embodiment will be described.

The fiber optic cable measuring unit 430 includes cable mounts 431 and 441 and an optical fiber cable (not shown). The cable mounts 431 and 441 are composed of an upper cable mount 431 and a lower cable mount 441 and have sizes corresponding to each other. For example, the upper cable mount 431 and the lower cable mount 441 are formed to have the same width and length.

The upper cable mount 431 and the lower cable mount 441 are each formed in a frame shape having openings 433,443. The lower cable mount 441 may follow the form of the first embodiment described above. That is, it may be formed in a rectangular frame shape having a plurality of crossbars 442a and a plurality of vertical bars 442b. The upper cable mount 431 may be formed in a shape corresponding to the lower cable mount 441 .

A stopper 444 is provided on the lower end side vertical bar 442b of the lower cable mount 441 .

The lower cable mount 441 or the upper cable mount 431 is formed with a position mark 445 in which the optical fiber cable 40 can be mounted.

The optical fiber cable 40 is fixedly installed at the position indicated by the position mark 445 . For example, an adhesive material (such as a double-sided tape or sticker) may be applied or attached to a position where the location mark 445 is located.

Although not shown separately, the location mark 445 may be formed in the form of a groove as in the above-described embodiment.

According to each embodiment of the present invention, the temperature of the power device can be easily measured and thermal management can be performed by the optical fiber cable measuring unit provided for each power device module.

In addition, the optical fiber cable temperature measuring device can be applied to each power device module by the optical fiber cable measuring unit, and thus can be applied to each power device module arranged in multiple stages.

In addition, since the optical fiber cable is placed in a bent shape on the optical fiber cable temperature measuring unit, a linear temperature distribution can be obtained by converting it to a planar temperature distribution.

In addition, it is possible to measure the temperature according to a constant distance measurement based on the connecting material.

In addition, since the optical fiber cable temperature measuring device is provided in the form of a unit in which the optical fiber cable is mounted on the optical fiber cable measuring unit, it is easy to assemble and install it in a power device.

The embodiments described above are embodiments for implementing the present invention, and various modifications and variations may be made by those of ordinary skill in the art to which the present invention pertains without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. That is, the protection scope of the present invention should be interpreted by the claims below, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

10 Power device 20 Power device module
40 fiber optic cable 50 splicing material
60 control unit 130,230,330 fiber optic cable measuring unit
131,231,331 Cable mount 136,236,336 Cable fixing groove

Claims (14)

In the optical fiber cable temperature measuring device applied to a power device provided with a plurality of power device modules,
an optical fiber cable measuring unit provided in each of the power device modules;
an optical fiber cable inserted and installed in each of the optical fiber cable measuring units; and
a control unit connected to one end of the fiber optic cable to measure the temperature;
The fiber optic cable measuring unit includes a cable mount in which the fiber optic cable is inserted and installed,
The cable mount includes a mount body formed in a rectangular frame shape and a terminal bar disposed across the mount body,
The optical fiber cable measuring unit is arranged to face one surface of each of the power device modules or installed to have a predetermined gap to measure the surface temperature of each power device module or the space temperature between adjacent power device modules. measuring device. delete delete The optical fiber cable temperature measuring device according to claim 1, wherein the cable mount has a plurality of openings. The optical fiber cable temperature measuring apparatus according to claim 1, wherein the mounting body is composed of a pair of crossbars arranged in parallel and a pair of vertical bars arranged in parallel. [Claim 6] The optical fiber cable temperature measuring device according to claim 5, wherein the end bar is disposed at the center of the pair of crossbars, respectively. [2] The optical fiber cable temperature measuring device according to claim 1, wherein the mounting body has a stopper for restricting entry when it is inserted into the power device module. [6] The optical fiber cable temperature measuring device according to claim 5, wherein a plurality of cable fixing grooves to which the optical fiber cable is fixed are formed on a lower surface of the end bar. The optical fiber cable temperature measuring device according to claim 8, wherein the cable fixing groove has a circular side cross-section. [Claim 9] The optical fiber cable temperature measuring device according to claim 8, wherein a plurality of the cable fixing grooves are formed in the vertical bar. 11. The method of claim 10, wherein the cable fixing groove formed in the end bar is formed in parallel with respect to the cross bar, the cable fixing groove formed in the vertical bar is characterized in that formed in an inclined direction with respect to the cross bar. Fiber optic cable temperature measuring device. The optical fiber cable temperature measuring apparatus according to claim 1, wherein the cable mount is composed of an upper cable mount formed in the form of a frame and a lower cable mount that is formed in the form of a frame and is coupled to the upper cable mount corresponding to the upper cable mount. . The optical fiber cable temperature measuring apparatus according to claim 12, wherein the upper cable mount is rotatably coupled to the lower cable mount. 13. The optical fiber cable temperature measuring apparatus according to claim 12, wherein a position mark is formed on the upper cable mount or the lower cable mount so that the optical fiber cable can be installed.

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