KR102326331B1 - panel type multi temperature measuring device - Google Patents

Abstract

The present invention relates to a panel-type multi-stage temperature measuring device, and more particularly, to a panel-type multi-stage temperature measuring device applied to a multi-stage module such as a battery storage device.
A panel-type multi-stage temperature measuring device according to an embodiment of the present invention includes an energy storage device provided with a plurality of battery modules; a plurality of temperature sensing panel units provided adjacent to each of the battery modules; an optical fiber cable inserted and installed in a bent form in each of the temperature sensing panel units; and a controller connected to both ends of the optical fiber cable to measure temperature.

Description

Panel type multi temperature measuring device

The present invention relates to a panel-type multi-stage temperature measuring device, and more particularly, to a panel-type multi-stage temperature measuring device applied to a multi-stage 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. , and sodium sulfur (NaS) batteries. Here, the battery type ESS is referred to as a BESS (Battery Energy Storage System), and the ESS generally refers to the BESS.

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

Reference will be made to an energy storage device (ESS) according to the prior art. 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 module 2 is stacked in multiple stages on a structure such as a beam. 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 between 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 manage the heat of the energy storage device by measuring the temperature around the battery module of the multi-stage energy storage device.

A panel-type multi-stage temperature measuring device according to an embodiment of the present invention includes an energy storage device provided with a plurality of battery modules; a plurality of temperature sensing panel units provided adjacent to each of the battery modules; an optical fiber cable inserted and installed in a bent form in each of the temperature sensing panel units; and a controller connected to both ends of the optical fiber cable to measure temperature.

Here, the temperature sensing panel unit includes an upper panel member and a lower panel member, and the optical fiber cable is inserted and installed between the upper panel member and the lower panel member.

In addition, it further includes a connection member coupled to both ends of the optical fiber cable and exposed to the outside of the upper panel member and the lower panel member.

In addition, each of the upper panel member and the lower panel member is formed of a thin plate or a film.

In addition, an insertion groove into which the optical fiber cable can be inserted is formed in the upper panel member or the lower panel member, and the insertion groove includes a straight part or a curved part.

In addition, the radius of curvature of the curved portion is characterized in that formed to be more than 20 times the diameter of the optical fiber cable.

In addition, a connection cable for connecting the connecting material between the control unit and the connecting material or between the adjacent battery modules is further included.

In addition, the upper panel member and the lower panel member may further include a mounting plate having a mounting plate mounting portion formed as a groove and inserted into the mounting plate mounting unit.

In addition, the mounting plate is characterized in that the wiring groove is formed along the circumferential surface so that the optical fiber cable is installed in a rolled shape.

In addition, a plurality of zones are set in the battery module, and a measurement point is set in the optical fiber cable according to a predetermined distance based on the connection material.

According to the multi-stage temperature measuring apparatus according to an embodiment of the present invention, the temperature of the energy storage device can be easily measured and thermal management can be performed by the temperature sensing panel unit provided for each battery module.

The temperature sensing panel unit is measured in a sheet, plane unit, so that the temperature generated between the battery modules can be effectively managed.

Since the temperature sensing panel unit is measured by a fiber optic cable inserted and laid between films (upper and lower panels) that are closely bonded to each other, the precision of measurement is high, and it can be converted to a measuring position through distance, making it easier to arrange and manage the measuring point. Easy.

Since the optical fiber cable is disposed on a film surface having a predetermined area, a radius of curvature required for the measurement operation can be secured.

Since the fiber optic cable is installed in an installation groove or a mounting plate formed (placed) on the film surface, a standardized temperature measurement position distribution can be configured, so temperature management is efficient.

Since the upper and lower panels can secure one direction by using an insulating / non-insulating film, the directionality of temperature measurement can be secured.

Since the temperature can be measured based on a connector provided for each temperature sensing panel unit, the same point on the upper surface of the battery module can be measured even if the distance between the battery modules is different.

Since it is installed in units of temperature sensing panel units in each battery module of the energy storage device, installation is easy.

1 is a perspective view of an energy storage device according to the prior art.
2 is a perspective view of an energy storage device provided with a panel-type multi-stage temperature measuring device according to an embodiment of the present invention.
3 and 4 are a perspective view and an exploded perspective view of the temperature sensing panel unit in FIG. 2 .
5 is a perspective view of the battery module in FIG. 2 .
6 and 7 are a perspective view and an exploded perspective view of a temperature sensing panel unit applied to a panel type multi-stage temperature measuring device according to another embodiment of the present invention.
FIG. 8 is a top view of a state in which the upper panel member and the mounting plate are removed from FIG. 6 .
9 is a perspective view of a lower panel applied to a panel-type multi-stage temperature measuring apparatus 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 carry out the invention, thereby It does not mean that the technical spirit and scope of the invention are limited.

A panel-type multi-stage temperature measuring device according to each embodiment of the present invention will be described in detail with reference to the drawings.

A panel-type multi-stage temperature measuring device according to an embodiment of the present invention includes an energy storage device 10 provided with a plurality of battery modules 20; a plurality of temperature sensing panel units (30) provided adjacent to each of the battery modules (20); an optical cable 40 inserted and installed in each of the temperature sensing panel units 30; Both ends of the optical cable 40 are connected to the control unit 60 for measuring the temperature; is configured to include.

An energy storage device 10 is provided. The energy storage device 10 may be configured in the form of a rack 11 so that a plurality of battery modules 20 can be installed in multiple stages. The rack 11 may be composed of an upper plate and a lower plate and a frame connected and supported between the upper plate and the lower plate. A plurality of battery modules 20 are installed in multiple stages in the rack 11 .

An energy storage device 10 is shown in FIG. 2 . The energy storage 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 battery module 20 can be installed and supported.

In addition, the rack 11 is provided with a support plate 13 so that the temperature sensing panel unit 30 can be installed. The support plate 13 may be provided above or below each battery module 20 . Accordingly, the temperature sensing panel unit 30 may be inserted and installed between the battery module 20 and the support plate 13 .

3 shows a temperature sensing panel unit 30 . A temperature sensing panel unit 30 is provided to measure the temperature between the battery module 20 and the adjacent battery module 20 . The temperature sensing panel unit 30 is disposed to face one surface (eg, an upper surface) of each battery module 20 or is installed to have a predetermined gap, so that the surface temperature of each battery module 20 or the battery modules 20 are Measure the space temperature between them.

The temperature sensing panel unit 30 may include a pair of panel members 31 and 35 , a fiber optic cable 40 , and a connector 50 .

Panel members 31 and 35 are provided. The panel members 31 and 35 are provided to attach or insert the optical fiber cable 40 . The panel members 31 and 35 may be formed of a thin member in the form of a board or a film.

The panel members 31 and 35 are provided singly, so that the optical fiber cable 40 can be installed.

In addition, the panel members 31 and 35 may be configured as a pair arranged side by side. That is, the panel members 31 and 35 may include an upper panel member 31 and a lower panel member 35 .

The panel members 31 and 35 are preferably made of a material having excellent heat resistance. For example, it may be provided with a Teflon sheet.

The panel members 31 and 35 are preferably formed in the form of a light thin plate. Accordingly, the load applied to each battery module 20 or the rack 11 is minimized, and the space occupied is minimized.

The panel members 31 and 35 are thin enough to be inserted between the adjacent battery modules 20 . For example, the thickness of the panel members 31 and 35 is formed within 3 mm. Since the gap between the battery modules 20 is formed to be small (for example, 10 mm), the thickness of the panel members 31 and 35 is formed to be thin so that they can be disposed therebetween.

An optical fiber cable 40 is provided. The optical fiber cable 40 is inserted and installed between a pair of panel members 31 and 35 . The optical fiber cable 40 is laid on the surfaces of the panel members 31 and 35 . The optical fiber cable 40 is disposed between the pair of panel members 31 and 35 in the form of being rolled or bent. That is, the optical fiber cable 40 is arranged while being bent in various shapes to be inserted into the panel members 31 and 35 to a predetermined length. The fiber optic cables 40 may be overlapped when bent.

As described above, the temperature of the peripheral portion of the battery module 20 may be measured in units of surfaces through the optical fiber cables disposed on the panel members 31 and 35 . The wire fiber optic cable 40 may have a plurality of measurement points by being planarly disposed on the panel members 31 and 35 .

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 fiber optic 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 battery module 20 , the optical fiber cable 40 is disposed in a bent shape.

4 is an exploded perspective view of the temperature sensing panel unit 30 is shown.

The panel members 31 and 35 may include an upper panel member 31 and a lower panel member 35 .

The upper panel member 31 is formed of a thin plate. The upper panel member 31 may be formed of a film material.

The lower panel member 35 is formed of a thin plate. The lower panel member 35 may be formed of a film material.

An insertion groove 36 into which the optical fiber cable 40 can be inserted is formed in the lower panel member 35 . The insertion groove 36 may be formed in a zigzag shape. The insertion groove 36 is formed in a bent shape.

The insertion groove 36 includes a straight part 36a or a curved part 36b. Here, the curved portion 36b is preferably formed so that the radius of curvature is 20 times or more of the diameter of the optical fiber cable 40 . This is in consideration of the material properties of the optical fiber cable 40 . In general, the radius of curvature capable of maintaining the proper operation of the optical fiber cable 40 is known to be 20 times or more of the cross-sectional diameter of the optical fiber cable 40 .

The optical fiber cable 40 is inserted into the insertion groove 36 of the lower panel member 35 . That is, the optical fiber cable 40 is arranged in the shape of the insertion groove (36). Since the optical fiber cable 40 is disposed in a bent form on a single surface, a length required for measurement of a plurality of measurement points within a predetermined unit area of the battery module 20 may be secured. Since the optical fiber cable 40 is long disposed on the battery module 20, a plurality of temperature measurement points are secured.

Connection materials 50 are provided at both ends of the optical fiber cable 40 . Since the connecting material 50 is provided on each of the panel members 31 and 35 , the temperature sensing panel unit 30 may 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 temperature sensing panel unit 30 .

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 temperature sensing panel unit 30 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 a 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.

5 shows the battery module 20 . One surface (eg, an upper surface) of the battery module 20 may be divided into a plurality of zones a, b, and c. Each zone may be a zone in which battery cells (not shown) inside the battery module 20 are physically separated, such as a partition or a partition wall. Alternatively, it may be a virtual area for dividing the upper surface of the battery module 20 into a predetermined area. 5 shows an example divided into three zones, of course, the number of these zones may be appropriately determined as needed.

In order to measure the temperature in each zone (a, b, c) of the battery module 20, the optical fiber cable 40 may have a plurality of measurement points. The arrangement shape of the optical fiber cable 40 may be determined so that a plurality of measurement points may be appropriately arranged in each zone (a, b, c).

6 shows a temperature sensing panel unit 30A applied to a panel type multi-stage temperature measuring apparatus according to another embodiment of the present invention.

Except as otherwise described herein, the matters applied to the temperature sensing panel unit 30 of the previous embodiment also apply to the temperature sensing panel unit 30A of this embodiment.

The temperature sensing panel unit 30A may include an upper panel member 31A, a lower panel member 35A, and a mounting plate 70 .

The panel members 31A and 35A are provided with mounting plate mounting portions 32 and 37 each formed with grooves, respectively, and the mounting plate 70 is inserted thereinto. The mounting plate installation parts 32 and 37 may be formed at positions or numbers corresponding to the respective zones a, b, and c of the battery module 20 . For example, the upper panel member 31A includes a mounting plate installation part 32a formed in the a zone, a mounting plate installation part 32b formed in the b zone, and a mounting plate installation part 32c formed in the c zone. Each may be provided. In addition, a plurality of mounting plate installation parts 32 and 37 may be provided for each zone (a, b, c). In this case, each area can be seen as more subdivided.

The mounting plate 70 may include a wiring groove 71 formed along the circumference of the circumferential surface. The optical fiber cable 40 may be inserted and disposed along the wiring groove 71 .

Since the mounting plate 70 is inserted and installed in the mounting plate installation parts 32 and 37 , it may be disposed to correspond to each region a, b, and c of the battery module 20 .

Flanges 72 and 73 protrude from the upper and lower portions of the wiring grooves 71 in the mounting plate 70 . In this case, the thickness of each of the flanges 72 and 73 may be formed to be the same as the depth of the mounting plate installation parts 32 and 37 . The flanges 72 and 73 of the mounting plate 70 are respectively provided to the mounting plate mounting portions 32 and 37 of the panel members 31A and 35A, so that the mounting plate 70 is disposed between the panel members 31A and 35A. The wiring groove 71 may be exposed.

FIG. 8 is a top view showing the upper panel member 31A and the mounting plate 70 removed in the embodiment of FIG. 6 .

The optical fiber cable 40 is disposed in a rolled (curved or rotatable) form along the mounting plate 70 to ensure a sufficient length within a limited area. In order to measure the temperature of each zone, measuring points 40a to 40f are set in the optical fiber cable 40 . These measuring points 40a to 40f are not physical, but may be measured values obtained from a distance obtained from a scattered wave measured by the controller 60 . The input terminal connecting member 50a may be a starting point of the temperature sensing panel unit 30A. Based on this starting point, the measurement points 40a to 40f may be set according to a predetermined distance. From these measurement points, the temperature value of each zone is obtained. 8 shows an example in which temperature values for six zones are obtained.

Let us take a look at the temperature sensing panel unit 30B of another embodiment.

Another example of the lower panel member 35B is shown in FIG. 9 . The upper panel member may be formed in the same manner as the lower panel member 35B and may be symmetrically disposed.

The mounting plate installation part 38 to which the mounting plate 70 is installed may be formed in a form in which a plurality of circular grooves are connected. That is, both side surfaces of the mounting plate installation part 38 may be formed in a wave pattern shape. The radius of curvature of the wave pattern may be formed to be the same as the radius of curvature of the mounting plate 70 .

As a plurality of mounting grooves are formed in the mounting plate installation part 38, the mounting plate 70 may be appropriately disposed according to the number of zones.

In each embodiment, the panel members 31 and 35 may be made of different materials. For example, the upper panel member 31 is made of an insulating material, and the lower panel member 35 is made of a non-insulating material. In this way, since the heat transfer is blocked by the heat insulating member, the directionality of the temperature measurement can be set. That is, since the temperature of the surface portion where the maximum temperature occurs is measured, thermal management of the energy storage device can be effectively performed.

According to each embodiment of the present invention, since the temperature sensing panel unit 30 may be provided in each battery module 20, installation is simple and operation is easy.

In addition, since the optical fiber cable 40 is disposed in a bent shape on the panel members 31 and 35, a linear temperature distribution can be converted into a planar temperature distribution and obtained.

In addition, if the same temperature sensing panel unit 30 is applied to each battery module 20, a standardized temperature distribution table may be obtained.

In addition, when heat insulating/non-insulating materials are differently applied to the panel members 31 and 35 , the directionality of temperature measurement can be secured.

In addition, it is possible to measure the temperature according to a constant distance measurement based on the connecting member 50 .

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 following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

10 Energy storage device 20 Battery module
30 Temperature sensing panel unit 31,35 Panel member
40 fiber optic cable 50 splicing material
60 Control unit 70 Mounting plate

Claims (11)

In the panel type multi-stage temperature measuring device applied to an energy storage device provided with a plurality of battery modules,
a plurality of temperature sensing panel units provided adjacent to each of the battery modules;
an optical fiber cable inserted and installed in a bent form in each of the temperature sensing panel units; a control unit connected to both ends of the optical fiber cable to measure the temperature;
The temperature sensing panel unit is arranged to face any one of the battery modules adjacent to each other, and to have a predetermined gap between the other battery module facing each other,
The temperature sensing panel unit includes a panel member, and the optical fiber cable is attached to or inserted into the panel member,
The panel member includes an upper panel member and a lower panel member, and the optical fiber cable is inserted and installed between the upper panel member and the lower panel member,
An insertion groove into which the optical fiber cable can be inserted and installed is formed in the upper panel member or the lower panel member,
A panel type multi-stage temperature measuring device, characterized in that one of the upper panel member and the lower panel member is made of an insulating material and the other is made of a non-insulating material. delete delete The panel-type multi-stage temperature measuring apparatus according to claim 1, further comprising a connection member coupled to both ends of the optical fiber cable and exposed to the outside of the upper panel member and the lower panel member. The panel type multi-stage temperature measuring apparatus according to claim 1, wherein the upper panel member and the lower panel member are each formed of a thin plate or a film. [2] The panel-type multi-stage temperature measuring device according to claim 1, wherein the insertion groove includes a straight part or a curved part. The panel-type multi-stage temperature measuring device according to claim 6, wherein a radius of curvature of the curved portion is 20 times or more of a diameter of the optical fiber cable. The panel type multi-stage temperature measuring device according to claim 4, further comprising a connection cable for connecting the connection material between the control unit and the connection material or between the adjacent battery modules. The panel type multi-stage temperature measuring apparatus of claim 1, wherein the upper panel member and the lower panel member have a mounting plate mounting portion formed as a groove, and further comprising a mounting plate inserted into the mounting plate mounting unit. [10] The panel-type multi-stage temperature measuring device according to claim 9, wherein a wiring groove is formed in the mounting plate so that the optical fiber cable is installed in a rolled shape along a circumferential surface. [Claim 5] The panel type multi-stage temperature measuring device according to claim 4, wherein a plurality of zones are set in the battery module, and measuring points are set in the optical fiber cable according to a predetermined distance from the connection material.

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