Energy storage system testing device

Abstract

The invention relates to an energy storage system testing device, which comprises a simulation test cabin, a plurality of battery supporting mechanisms, a plurality of battery supporting mechanisms and a plurality of battery supporting mechanisms, the optical fiber assembly is installed in the simulation test cabin, and at least part of the optical fiber assembly is connected to the battery supporting mechanism; the distributed optical fiber temperature measuring device is in signal connection with the optical fiber assembly, and the distributed optical fiber temperature measuring device is used for converting optical signals of the optical fiber assembly into temperature distribution data of the optical fiber assembly. By installing the optical fiber assembly in the simulation test chamber, the distributed optical fiber temperature measuring device can be utilized to convert optical signals into electric signals, and then the electric signals are processed and calculated to obtain temperature distribution data of the simulation test chamber, namely temperature distribution conditions in the simulation test chamber. The technical problem that the change of the temperature field in the battery energy storage station when a fire occurs is not considered when a reduced-scale rack is used for a fire test in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the field of lithium battery energy storage, and in particular to an energy storage system testing device. Background Art

[0002] The scale of lithium battery energy storage systems has expanded rapidly in recent years. At present, the fire protection problem of lithium battery energy storage systems is prominent. When a fire involves batteries and induces thermal runaway of batteries, it is difficult to control and cause serious consequences.

[0003] In the related art, the fire safety level of the battery energy storage station has been initially solved by using a scaled-down test bench for fire testing. However, the change of the temperature field in the battery energy storage station when a fire occurs is not taken into account when using a scaled-down test bench for fire testing. Summary of the invention

[0004] The present application provides an energy storage system test device, which can solve the technical problem in the related art that the change of the temperature field in the battery energy storage station when a fire occurs is not considered when using a scaled bench for fire testing.

[0005] In a first aspect, an embodiment of the present application provides an energy storage system test device, comprising: a simulation test chamber, in which a plurality of battery support mechanisms are installed at intervals; an optical fiber assembly, which is installed in the simulation test chamber and at least part of which is connected to the battery support mechanism; and a distributed optical fiber temperature measuring device, which is signal-connected to the optical fiber assembly and is used to convert an optical signal into temperature distribution data.

[0006] In combination with the first aspect, in one embodiment, the optical fiber assembly includes a bending section and a temperature measuring section connected to both ends of the bending section, the temperature measuring section extends along the spacing direction of the multiple groups of battery support mechanisms, and two adjacent temperature measuring sections are spaced apart along a direction perpendicular to the extension direction of the temperature measuring section.

[0007] In combination with the first aspect, in one implementation, the bending section is bent into an arc shape.

[0008] In combination with the first aspect, in one embodiment, the optical fiber assembly includes a distributed optical fiber bundle, the distributed optical fiber bundle includes a plurality of temperature measuring optical fibers, each of the temperature measuring optical fibers includes a reserved segment, one end of the reserved segment is connected to a distributed optical fiber temperature measuring device, and the reserved segment of each temperature measuring optical fiber has a different length.

[0009] In combination with the first aspect, in one embodiment, each of the temperature measuring optical fibers is provided with a data collection origin, and the data collection origin of each of the temperature measuring optical fibers is located at the same cross-section of the optical fiber assembly; one end of the reserved section of each of the temperature measuring optical fibers is connected to the launch port of the distributed optical fiber temperature measuring device, and the other end is connected to the data collection origin.

[0010] In combination with the first aspect, in one embodiment, a baffle is installed in the simulation test chamber, the baffle divides the simulation test chamber into a battery test chamber and a data acquisition chamber, the baffle is provided with an air outlet, the optical fiber assembly is installed in the battery test chamber, and the distributed optical fiber temperature measuring device is installed in the data acquisition chamber.

[0011] In combination with the first aspect, in one embodiment, the simulation test chamber includes side panels and a top panel and a bottom panel installed on opposite sides of the side panels, and the side panels, the bottom panel and the top panel together form a test cavity; the top panel and the bottom panel are both installed with the optical fiber assembly, and part of the optical fiber assembly is suspended in the test cavity, and the optical fiber assembly suspended in the test cavity is connected to multiple groups of battery support mechanisms.

[0012] In combination with the first aspect, in one implementation, the energy storage system testing device further includes a video monitoring system, and the video monitoring system is installed in the battery testing room.

[0013] In combination with the first aspect, in one embodiment, the energy storage system test device further includes an emergency water firefighting interface, and the emergency water firefighting interface is installed on the side wall of the simulation test chamber.

[0014] In combination with the first aspect, in one embodiment, each group of the battery support mechanisms includes two rows of support plates, and the two rows of support plates are spaced apart along the length direction of the simulation test chamber, and each row of the support plates includes at least two battery pack installation areas, and at least two of the battery pack installation areas have a height difference along the length direction perpendicular to the simulation test chamber.

[0015] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0016] By installing an optical fiber assembly in the simulation test chamber, a distributed optical fiber temperature measuring device can be used to convert optical signals into electrical signals, and then the electrical signals are processed and calculated to obtain temperature distribution data of the simulation test chamber, that is, the temperature distribution in the simulation test chamber is obtained. At least part of the optical fiber assembly is connected to the battery support mechanism. These optical fiber assemblies can be used to obtain temperature distribution data on the surrounding side of the battery support mechanism supporting the battery pack, and a larger temperature field in the simulation test chamber is collected, which solves the technical problem that the related technology uses a scaled bench for fire testing without considering the changes in the temperature field in the battery energy storage station when a fire occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of a three-dimensional structure of an optical fiber assembly provided in an embodiment of the present application installed in a battery test room;

[0019] Figure 2 A schematic diagram of a three-dimensional structure in which a battery pack provided in an embodiment of the present application is installed in a battery pack installation area;

[0020] Figure 3 A schematic diagram of a three-dimensional structure of a battery support mechanism provided in an embodiment of the present application installed in a battery test room;

[0021] Figure 4 A schematic diagram of the stereoscopic structure of the video surveillance system and the emergency water firefighting interface provided in the embodiment of the present application arranged in a simulation test cabin;

[0022] Figure 5 A schematic diagram of the structure of a distributed optical fiber temperature measurement device provided in an embodiment of the present application;

[0023] Figure 6 A schematic diagram of a group of battery support mechanisms provided in an embodiment of the present application;

[0024] Figure 7 A schematic diagram of the three-dimensional structure of a battery pack provided in an embodiment of the present application.

[0025] In the figure:

[0026] 1. Simulation test chamber; 11. Baffle plate; 111. Air outlet; 112. Air inlet; 113. Threading hole; 12. Battery test chamber; 13. Data acquisition chamber;

[0027] 2. Battery support mechanism; 21. Support plate; 211. Battery pack installation area; 212. Column; 213. Slide rail;

[0028] 3. Optical fiber assembly; 31. Bending section; 32. Temperature measurement section; 33. Temperature measurement optical fiber; 331. Data collection origin; 332. Reserved section;

[0029] 41. Fisheye surveillance camera; 42. High-speed camera;

[0030] 51. Water flooding fire fighting interface; 52. Gas fire fighting pipeline;

[0031] 6. Battery pack; 61. Liquid cooling plate. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The embodiment of the present application provides an energy storage system test device, which can solve the technical problem in the related art that when using a scaled bench to conduct a fire test, the change of the temperature field in the battery energy storage station when a fire occurs is not considered.

[0034] See also Figure 1 As shown, an energy storage system test device provided by an embodiment of the present application may include: a simulation test cabin 1, in which a plurality of battery support mechanisms 2 are installed at intervals; an optical fiber assembly 3, in which the optical fiber assembly 3 is installed, and at least part of the optical fiber assembly 3 is connected to the battery support mechanism 2; a distributed optical fiber temperature measuring device, in which the distributed optical fiber temperature measuring device is signal-connected to the optical fiber assembly 3, and the distributed optical fiber temperature measuring device is used to convert the optical signal into temperature distribution data. The simulation test cabin 1 can be constructed based on some lithium battery energy storage systems that are actually used. The optical fiber assembly 3 may be partially installed on the inner wall of the simulation test cabin 1, partially installed on the battery support mechanism 2, or completely installed on the battery support mechanism 2, which can be set according to the actual needs of the test.

[0035] In the embodiment of the present application, by installing the optical fiber assembly 3 in the simulation test chamber 1, the optical signal obtained by the optical fiber assembly 3 can be converted into an electrical signal by using a distributed optical fiber temperature measuring device. Specifically, the distributed optical fiber temperature measuring device may include a laser, and a high-power optical pulse can be generated by the laser. These optical pulses are transmitted through the optical fiber assembly 3. When the optical pulses are transmitted in the optical fiber assembly 3, they interact with the optical fiber molecules to produce a Raman scattering effect. The intensity of the anti-Stokes light in the Raman scattered light is closely related to the temperature. In addition, the distributed optical fiber temperature measuring device may also include a processor, in which the photodetector is The output electrical signal is amplified, filtered, digitized, and subjected to time domain analysis, optical power measurement, and temperature calculation, and finally the temperature distribution data along the optical fiber is obtained, that is, the temperature distribution in the simulation test chamber 1 is obtained. At least part of the optical fiber assembly 3 is connected to the battery support mechanism 2, and these optical fiber assemblies 3 can be used to obtain the temperature distribution data on the side of the battery support mechanism 2 supporting the battery pack 6, thus collecting a larger temperature field in the simulation test chamber 1, which solves the technical problem that the related technology uses a scaled bench for fire testing without considering the change of the temperature field in the battery energy storage station when a fire occurs.

[0036] In some optional embodiments, the optical fiber assembly 3 may include a bending section 31 and a temperature measuring section 32 connected to both ends of the bending section 31, and the temperature measuring section 32 extends along the spacing direction of the multiple groups of battery support mechanisms 2, and two adjacent temperature measuring sections 32 are spaced apart in a direction perpendicular to the extension direction of the temperature measuring section 32. It should be understood that both the bending section 31 and the temperature measuring section 32 can be used to simulate the environmental temperature measurement in the test chamber 1, but the temperature measurement accuracy of the bending section 31 is lower than that of the temperature measuring section 32. Therefore, in the embodiment of the present application, the temperature measurement is mainly performed using the temperature measuring section 32. The temperature measuring section 32 in the spacing direction of the multiple groups of battery support assemblies can be regarded as the length direction of the simulation test chamber 1, see Figure 1 As shown, the temperature measuring section 32 is the temperature measuring optical fiber 33 of the Y axis of the simulation test chamber 1, and the bending section 31 is the temperature measuring optical fiber 33 of the X and Z axes of the simulation test chamber 1. In the embodiment of the present application, by selecting the temperature measuring section 32 for temperature measurement, the accuracy and reliability of temperature measurement can be improved. Although the bending section 31 has a lower accuracy for the temperature measurement result, it can also be used as an auxiliary temperature measurement means to enrich the final temperature data.

[0037] In some optional embodiments, the bending section 31 is bent into an arc. In the embodiment of the present application, the length of each bending section 31 can be set to 1.3m, so that the bending section 31 is bent into an arc with a bending radius of 0.3m, and the distance between two adjacent temperature measuring sections 32 is 0.9m. By setting the bending section 31 to an arc so that the temperature measuring section 32 can be tangent to the bending section 31 when connected, the stress on the optical fiber assembly 3 due to bending is reduced, the integrity and toughness of the optical fiber assembly 3 are protected, and the measurement result is more accurate. In some other embodiments, depending on the model of the temperature measuring optical fiber 33, the length of the bending section 31 can also be set to be less than 1.3m or greater than 1.3m, and the radius of the bending section can also be greater than 0.3m or less than 0.3m, and the distance between two adjacent temperature measuring sections 32 can be less than 0.9m or greater than 0.9m. The reduction in the spacing between two adjacent temperature measuring sections 32 can increase the density of temperature measuring points during the experiment. It should be noted that the bending radius determined by the model of the temperature measuring optical fiber 33 itself has nothing to do with the spacing between the two temperature measuring sections.

[0038] In some optional embodiments, the optical fiber assembly 3 includes a distributed optical fiber bundle, the distributed optical fiber bundle includes a plurality of temperature measuring optical fibers 33, each of the temperature measuring optical fibers 33 includes a reserved section 332, one end of the reserved section 332 is connected to a distributed optical fiber temperature measuring device, and the reserved section 332 of each temperature measuring optical fiber 33 has a different length. That is, the reserved section 332 refers to the length of a portion of the optical fiber assembly 3 reserved, and the distributed optical fiber bundle can use 2 to 4 temperature measuring optical fibers, and the accuracy of the temperature data can be improved by setting the reserved section 332. In some other embodiments, the number of temperature measuring optical fibers can be 4 or more. Generally, the more temperature measuring optical fibers there are, the denser the temperature collection points can be along the length direction of the simulation test chamber. Specifically, each of the temperature measuring optical fibers 33 is provided with a data collection origin 331, and the data collection origin 331 of each of the temperature measuring optical fibers 33 is located at the same cross-section of the optical fiber assembly 3; one end of the reserved section 332 of each of the temperature measuring optical fibers 33 is connected to the launch port of the distributed optical fiber temperature measuring device, and the other end is connected to the data collection origin 331. In the embodiment of the present application, the data collection origin 331 can be determined according to actual needs, but it should be noted that the data obtained from the data collection origin 331 during the temperature measurement process should also be relatively stable, and the data collection origin 331 should be selected from the temperature measurement section. After the data acquisition origin 331 is determined, it can be considered that the data acquisition origin 331 of each temperature measuring optical fiber 33 in the distributed optical fiber bundle is at the same point in the simulation test chamber 1, and the distance from the launch port of the distributed optical fiber temperature measuring device to the data acquisition origin 331 of each temperature measuring optical fiber 33 is different. Taking a 4-channel distributed optical fiber bundle with a sampling accuracy of 1m as an example, L represents the length of a certain temperature measurement point from the launch port of the distributed optical fiber temperature measuring device. When actually measuring temperature, the temperature measuring optical fiber 33 of one of the channels in the distributed optical fiber bundle is selected as the data of the temperature measurement point. Specifically, the length of point L can be obtained first, and the length at this point should be rounded down to obtain L 向下取整 The temperature measuring optical fiber 33 of which channel is selected is obtained according to the calculation process, and the calculation process can be (LL 向下取整 ) / 0.25, the temperature measuring optical fiber 33 of the corresponding channel can be selected according to the integer value of the calculation result. If the result is 3.98, the temperature measuring optical fiber 33 of the third channel is selected. If the result is 2.11, the temperature measuring optical fiber 33 of the second channel is selected. It should be understood that (LL 向下取整 ) / 0.25, the 0.25 is determined according to the number of temperature measuring optical fibers in the distributed optical fiber bundle and the sampling accuracy of the temperature measuring optical fibers. When the number of channels of the temperature measuring optical fibers in the distributed optical fiber bundle changes and the sampling accuracy changes, the value will also change accordingly. Specifically, the value should be the sampling accuracy divided by the number of temperature measuring optical fiber channels.

[0039] In some optional embodiments, a baffle plate 11 is installed in the simulation test chamber 1, and the baffle plate 11 divides the simulation test chamber 1 into a battery test chamber 12 and a data acquisition chamber 13. The baffle plate 11 is provided with an air outlet 111, the optical fiber assembly 3 is installed in the battery test chamber 12, and the distributed optical fiber temperature measuring device is installed in the data acquisition chamber 13. When the air outlet 111 is opened in the baffle plate 11, a pipeline can be connected at the air outlet 111 to connect the air outlet 111 with the outside. In the embodiment of the present application, the simulation test chamber 1 is divided into a battery test chamber 12 and a data acquisition chamber 13 by the baffle plate 11, and the distributed optical fiber temperature measuring device is installed in the data acquisition chamber 13 to protect the distributed optical fiber temperature measuring device from damage during the temperature measurement test. In addition, the data acquisition origin 331 can be set at the connection between the battery test chamber 12 and the data acquisition chamber 13, and the reserved section 332 can be located in the data acquisition chamber 13. Preferably, the temperature measuring optical fiber 33 and the distributed optical fiber bundle are both covered with a high temperature resistant and thermally conductive outer skin, which can withstand high temperature burning above 1000° C. In some other embodiments, the air outlet 111 can also be opened on other side walls of the battery laboratory 12 .

[0040] In some optional embodiments, the simulation test chamber 1 may include a side panel and a top panel and a bottom panel installed on opposite sides of the side panel, and the side panel, the bottom panel and the top panel together enclose a test chamber; the top panel and the bottom panel are both installed with the optical fiber assembly 3, and part of the optical fiber assembly 3 is suspended in the test chamber, and the optical fiber assembly 3 suspended in the test chamber is connected to multiple groups of battery support mechanisms 2. That is, in addition to the temperature measuring section 32 and the bending section 31 arranged on the top panel and the bottom panel, part of the temperature measuring section 32 and the bending section 31 can also be fixed to the battery support mechanism 2 so that it is in a suspended state, that is, located in the cavity of the battery test chamber 12. It should be understood that the suspension here does not mean that the part of the temperature measuring section 32 and the bending section 31 are completely suspended, but are suspended when not connected to the battery support mechanism 2. This arrangement can effectively collect the spatial temperature in the simulation test chamber 1, reduce the length loss and accuracy loss caused by frequent bending of the optical fiber, and maximize the number of channels of the distributed optical fiber temperature measuring device to improve accuracy.

[0041] See also Figure 3 and Figure 4As shown, in some optional embodiments, the energy storage system test device further includes a video monitoring system, which is installed in the battery test room 12. Specifically, four 1080P fisheye monitoring cameras 41 and multiple high-speed cameras 42 with a frame rate of 15000fps can be installed in the battery test room 12. The fisheye monitoring cameras 41 and the high-speed cameras 42 are both explosion-proof and installed on the roof of the battery test room 12, so that the fisheye cameras can effectively capture the generation and spread of fire, and the high-speed cameras 42 can effectively capture the combustion and explosion process in the battery compartment.

[0042] In some optional embodiments, the energy storage system test device also includes an emergency water firefighting interface, which is installed on the side wall of the simulation test cabin 1. Specifically, the emergency water firefighting interface can connect the battery test room 12 and the outside world to form a firefighting passage. In the embodiment of the present application, the emergency water firefighting interface may include a water flooding firefighting interface 51 and a gas firefighting pipeline 52. The water flooding firefighting interface 51 is arranged at the bottom of the cabin body and is equipped with a firefighting water pipe interface with a pipe diameter of 65mm. The gas firefighting pipeline 52 adopts perfluorohexanone firefighting, and 3 atomizing nozzles are arranged on the roof of the battery test room 12. When the experimental process is monitored by the video monitoring system, if an emergency or accident occurs, the fire in the battery cabin can be quickly extinguished by water firefighting and gas firefighting to prevent the danger from expanding and enhance the safety of the test results.

[0043] See also Figure 2 and Figure 6 As shown, in some optional embodiments, each group of the battery support mechanism 2 includes two rows of support plates 21, and the two rows of support plates 21 are arranged at intervals along the length direction of the simulation test chamber 1, and each row of support plates 21 includes at least two battery pack installation areas 211, and at least two of the battery pack installation areas 211 have a height difference along the length direction perpendicular to the simulation test chamber 1. Figure 7As shown, in the specific experimental process, the actual battery pack 6 required for use can be placed in some battery pack installation areas 211, and the battery pack 6 model is used to fill the other battery pack installation areas 211, effectively simulating the effect of a full battery pack 6 in the battery compartment. The filled battery pack 6 and the real battery pack 6 are consistent in appearance, and the bottom of the filled battery pack 6 and the real battery pack 6 will have a liquid cooling plate 61. Therefore, by having a height difference in the two battery pack installation areas 211 along the length direction perpendicular to the simulation test cabin 1, the bottom plates of the two batteries in the two adjacent battery pack installation areas 211 can be staggered when preventing the battery, thereby improving the layout efficiency. Specifically, the filled battery pack 6 model adopts a steel shell with a size of 1.16*0.80*0.25m. In addition, each two rows of support plates 21 can include 6 columns 212 and slide rails 213. The slide rails 213 can be made of angle steel, and the column 212 is 2.50m high, 0.81m wide, and 2.30m long. The slide rails 213 are installed on the columns 212, and the height spacing of each layer of slide rails 213 is 0.30m. Each battery rack is installed with 8 layers of slide rails 213, and the height difference on both sides of the same layer of slide rails 213 is 0.03m. There are 5 groups of battery support mechanisms 2 and 80 battery installation positions in the simulation test cabin 1. The bottom of the support plate 21 is welded to the cabin body. In some other embodiments, the height, width and length of the columns 212 can also be adjusted, the height spacing of each layer of slide rails 213, and the height difference on both sides of the same layer of slide rails 213 can also be adjusted, and the number of battery support mechanisms 2 and the number of battery installation positions are not limited to the above-mentioned numbers. The battery support mechanism 2 is a movable battery rack. During the experiment, the number can be increased or decreased according to actual needs, the interval between battery packs 6 can be adjusted, and the installation position can be moved.

[0044] In the embodiment of the present application, the simulation test cabin 1 can use a 20-foot container, and an air inlet 112 can be set at the battery test room 12. The air inlet 112 is opened on the side panel of the battery test room 12 away from the air outlet 111, and the air inlet 112 is opened near the bottom panel, and the air outlet 111 is opened near the top panel, and an explosion-proof fan is installed at the air outlet 111. Along the length direction of the simulation test cabin 1, the width of the data acquisition room 13 can be set to 1m, and some lines between the battery test room 12 and the data acquisition room 13 are laid through the threading holes 113 opened on the baffle plate 11, and the threading holes 113 are also close to the top panel of the simulation test cabin 1.

[0045] See also Figure 5As shown, in some optional embodiments, the distributed optical fiber temperature measuring device may include a laser, a coupler, a wavelength division multiplexer, an optoelectronic conversion circuit, a signal acquisition circuit and a processor. The laser can emit an optical pulse signal with a specific power and pulse width. After the emitted pulsed optical signal passes through a filter to remove irrelevant information, it can be coupled into a distributed optical fiber bundle arranged in the battery test chamber 12 for transmission. The coupler can introduce the optical signal into the optical fiber assembly 3. The wavelength division multiplexer can allow the original signal to pass smoothly during the signal transmission process, while separating Raman signals of different wavelengths in the signal receiving channel, extracting useful signals, and effectively reducing the interference of irrelevant information. The other structures of the distributed optical fiber temperature measuring device are common structures in the relevant technology and will not be repeated here.

[0046] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0047] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0048] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An energy storage system test device, characterized in that: It includes: A simulation test chamber (1), wherein a plurality of battery support mechanisms (2) are installed at intervals in the simulation test chamber (1); An optical fiber assembly (3), the optical fiber assembly (3) being installed in the simulation test chamber (1), and at least a portion of the optical fiber assembly (3) being connected to the battery support mechanism (2); A distributed optical fiber temperature measuring device is connected to the optical fiber assembly (3) by signal, and is used to convert the optical signal into temperature distribution data.

2. The energy storage system testing device according to claim 1, characterized in that: The optical fiber assembly (3) comprises a bending section (31) and a temperature measuring section (32) connected to both ends of the bending section (31); the temperature measuring section (32) extends along the spacing direction of the multiple groups of battery support mechanisms (2), and two adjacent temperature measuring sections (32) are spaced apart along a direction perpendicular to the extension direction of the temperature measuring sections (32).

3. The energy storage system testing device according to claim 2, characterized in that: The bending section (31) is bent into an arc shape.

4. The energy storage system testing device according to claim 1, characterized in that: The optical fiber assembly (3) comprises a distributed optical fiber bundle, the distributed optical fiber bundle comprises a plurality of temperature measuring optical fibers (33), each of the temperature measuring optical fibers (33) comprises a reserved section (332), one end of the reserved section (332) is connected to a distributed optical fiber temperature measuring device, and the reserved section (332) of each temperature measuring optical fiber (33) has a different length.

5. The energy storage system testing device according to claim 4, characterized in that: Each of the temperature measuring optical fibers (33) is provided with a data collection origin (331), and the data collection origin (331) of each of the temperature measuring optical fibers (33) is located at the same cross section of the optical fiber assembly (3); One end of the reserved section (332) of each temperature measuring optical fiber (33) is connected to the emission port of the distributed optical fiber temperature measuring device, and the other end is connected to the data collection origin (331).

6. The energy storage system testing device according to claim 1, characterized in that: A baffle plate (11) is installed in the simulation test chamber (1), and the baffle plate (11) divides the simulation test chamber (1) into a battery test chamber (12) and a data acquisition chamber (13). The baffle plate (11) is provided with an air outlet (111). The optical fiber assembly (3) is installed in the battery test chamber (12), and the distributed optical fiber temperature measuring device is installed in the data acquisition chamber (13).

7. The energy storage system testing device according to claim 6, characterized in that: The simulation test chamber (1) comprises a side panel and a top panel and a bottom panel installed on opposite sides of the side panel, wherein the side panel, the bottom panel and the top panel together form a test chamber; The top panel and the bottom panel are both installed with the optical fiber assembly (3), and part of the optical fiber assembly (3) is suspended in the test cavity, and the optical fiber assembly (3) suspended in the test cavity is connected to multiple groups of battery support mechanisms (2).

8. The energy storage system testing device according to claim 7, characterized in that: The energy storage system testing device also includes a video monitoring system, which is installed in the battery testing room (12).

9. The energy storage system testing device according to claim 1, characterized in that: The energy storage system test device also includes an emergency water firefighting interface, which is installed on the side wall of the simulation test chamber (1).

10. The energy storage system testing device according to claim 1, characterized in that: Each group of the battery support mechanisms (2) comprises two rows of support plates (21), the two rows of support plates (21) being arranged at intervals along the length direction of the simulation test chamber (1), each row of the support plates (21) comprising at least two battery pack installation areas (211), and at least two of the battery pack installation areas (211) having a height difference along a length direction perpendicular to the simulation test chamber (1).

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