Fireproof test system

Abstract

A fireproof test system is used for testing a fireproof coating of a power battery pack and comprises a main body frame; a fixed bracket connected to the main body frame; the test plate is provided with a fire receiving surface and a non-fire receiving surface, the test plate is fixed on the fixed bracket, and the fire receiving surface of the test plate is coated with the fireproof coating; the flame heating device is configured to heat the fireproof coating to be greater than 2000 DEG C; each transmission wire is provided with a first end and an opposite second end, the first end of each transmission wire is provided with a thermocouple element, the first end of the first transmission wire is connected to a temperature measuring point on the fire receiving surface of the test board through the thermocouple element, and the second end of the second transmission wire is connected to a temperature measuring point on the fire receiving surface of the test board through the thermocouple element. The first end of the second transmission wire is connected to a temperature measuring point on the non-fire surface of the test board through a thermocouple element; the temperature measuring device is connected to the second end of each transmission wire in a communication mode, and the temperature measuring device continuously receives and records the temperature through the first transmission wire and the second transmission wire.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a fire test system. BACKGROUND

[0002] The power battery pack widely used in new energy vehicles usually needs to be coated with fireproof paint on the back of the battery pack for improving the fireproof and heat insulation performance of the power battery. Such fireproof paint will expand and insulate heat when on fire, thereby slowing down the heat transfer from the fire scene to the vehicle chassis and passenger compartment, and further achieving the purpose of improving the fireproof performance of the entire power battery system.

[0003] Therefore, the fireproof and heat insulation performance is the most important one for evaluating the performance of the fireproof paint of the power battery. Currently, there is no uniform national standard or industry standard to follow in China. More often, the performance test is carried out according to the enterprise standard or enterprise requirement of the vehicle manufacturer.

[0004] In the existing performance test carried out by the vehicle manufacturer for the fireproof paint of the power battery, the actual production power battery pack is usually used as the carrier, and a flame is sprayed to the side of the power battery pack with the fireproof paint to heat. The heating can heat the fireproof paint to about 800 to 900 degrees Celsius. During the heating of the fireproof paint and after the fireproof paint is heated to the above-mentioned temperature, the tester uses a temperature measuring gun to irradiate a predetermined temperature measuring point on the opposite side (i.e. the non-fire side) of the power battery pack coated with the fireproof paint multiple times to obtain and record multiple temperatures of the predetermined temperature measuring point, so as to monitor whether the fireproof paint can achieve the predetermined fireproof and heat insulation performance.

[0005] However, the above-mentioned existing performance test has several shortcomings.

[0006] Since the power battery pack with a large volume is used as the carrier, the required space for the test is large, and the requirement for the test site is high.

[0007] The flame heat source used in the existing performance test can only heat the fireproof paint to a temperature range of 800 to 900 degrees Celsius. However, as the technical requirements and needs are improved, the fireproof paint of the power battery pack may need to withstand higher temperatures, and therefore the fireproof paint needs to be heated to a higher temperature in the test. The existing flame heat source cannot support such a test.

[0008] The use of the temperature measuring gun only allows the temperature at the temperature measuring point to be measured in a time-discrete manner, but cannot achieve the continuous collection and recording of the temperature change of the temperature measuring point during the entire test. Moreover, it is also difficult for the temperature measuring gun to monitor the temperature of the area other than the predetermined temperature measuring point.

[0009] In existing performance tests, the temperature of the opposite side (i.e. the non-fire side) of the power battery pack coated with the fireproof coating is often measured, but the temperature of the side directly contacting the flame (i.e. the fire side) is ignored. Utility Model Content

[0010] It is desirable to provide a fireproof test system that can solve one or more of the above problems.

[0011] According to a first aspect of the present disclosure, a fireproof test system for testing a fireproof coating of a power battery pack is provided, the fireproof test system comprising: a main frame; a fixed support connected to the main frame; a test plate having a fire side and an opposite non-fire side, the test plate being fixed on the fixed support, the fireproof coating being coated on the fire side of the test plate; a flame heating device configured to heat the fireproof coating on the fire side of the test plate to greater than 2000 degrees Celsius; at least one first transmission wire and at least one second transmission wire, each of the first and second transmission wires having a first end and an opposite second end, a thermocouple element being disposed on the first end of the first and second transmission wires, wherein the first end of the first transmission wire is connected to a temperature measurement point on the fire side of the test plate through the thermocouple element, and the first end of the second transmission wire is connected to a temperature measurement point on the non-fire side of the test plate through the thermocouple element; and a temperature measuring device communicatively connected to the second end of the first and second transmission wires, wherein the temperature measuring device continuously receives and records the temperature at the temperature measurement points via the first and second transmission wires.

[0012] In one embodiment, the fireproof test system further comprises a thermal imager configured to monitor the temperature in the area on the test plate other than the temperature measurement points in real time.

[0013] In one embodiment, the fireproof test system further comprises a fume hood having an internal space capable of being ventilated with the outside of the fume hood, and the main frame, the fixed support, the test plate, and the flame heating device are arranged in the internal space.

[0014] In one embodiment, the fireproof test system further comprises an oxygen and explosion measuring device configured to monitor the oxygen concentration and flammable gas concentration in the surrounding environment, and the oxygen and explosion measuring device is fixed to the main frame.

[0015] In one embodiment, the fireproof test system further comprises a display device in communication with the temperature measuring device, the display device being configured to visually display the value of the temperature received by the temperature measuring device.

[0016] In one embodiment, the fixing bracket is provided with at least one elongated slot, such that at least a portion of the test plate is capable of being inserted and fixed within the slot.

[0017] In one embodiment, the flame heating device is a butane flame torch.

[0018] In one embodiment, the main body frame comprises a base, a vertical support pole vertically extending from the base, and a horizontal support pole horizontally extending and connected to the vertical support pole.

[0019] In one embodiment, the fixing bracket is fixed to the vertical support pole of the main body frame, and the fixing bracket is configured to be capable of adjusting the height of the fixing bracket relative to the main body frame.

[0020] In one embodiment, the test plate is made of the same material as the material of the housing of the power battery pack.

[0021] According to a second aspect of the present disclosure, it also relates to a fireproof test system for testing a fireproof coating of a power battery pack, characterized in that the fireproof test system comprises: a main body frame; a fixing bracket connected to the main body frame; a test plate having a first attachment surface and an opposite non-fire surface, the test plate being fixed on the fixing bracket; a protective layer having a fire surface and an opposite second attachment surface, the fireproof coating being attached to the second attachment surface, wherein the fireproof coating is coated between the first attachment surface of the test plate and the second attachment surface of the protective layer; a flame heating device configured to heat the fire surface of the protective layer to greater than 2000 degrees Celsius; at least one first transmission wire, at least one second transmission wire, and at least one third transmission wire, each of the first, second, and third transmission wires having a first end and an opposite second end, the first ends of the first, second, and third transmission wires being provided with a thermocouple element, wherein the first end of the first transmission wire is connected to a temperature measuring point on the fire surface of the protective layer through the thermocouple element, the first end of the second transmission wire is connected to the non-fire surface of the test plate through the thermocouple element, and the first end of the third transmission wire is connected to a temperature measuring point on the fireproof coating through the thermocouple element; and a temperature measuring device communicatively connected to the second ends of the first, second, and third transmission wires, wherein the temperature measuring device continuously receives and records the temperature at the temperature measuring points via the first, second, and third transmission wires. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present disclosure will become more fully understood from the detailed description given herein below, and appended claims, as well as from the accompanying drawings. The detailed description and drawings are merely illustrative of the present disclosure. It should be noted that the figures included are not necessarily drawn to scale. Furthermore, the figures are not intended to limit the scope of the present disclosure. The same reference numbers in different drawings represent the same elements. The following detailed description is provided with reference to the accompanying drawings.

[0023] Figure 1 A schematic front view of a fire test system according to the present disclosure is shown;

[0024] Figure 2 A schematic side view of a fire test system according to the present disclosure is shown, viewed in the direction of the flame jet. DETAILED DESCRIPTION

[0025] The present disclosure will now be described with reference to the attached figures. The appended figures are included to illustrate certain embodiments of the present disclosure. It should be understood that the present disclosure can be embodied in many different forms and should not be limited to the embodiments described below; in fact, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in a variety of ways, providing additional embodiments.

[0026] It should be understood that, in all of the drawings, like reference numerals refer to like parts throughout the several views. In the drawings, the dimensions of some features can be exaggerated for clarity.

[0027] It should be understood that the language used in the specification has been principally selected for readability and instructional purposes and can not have been selected to delineate or circumscribe the inventive subject matter, resort to recondite terminology or scientific designs. Accordingly, the present disclosure is not intended to be limited to the specific form set forth herein.

[0028] As used in the specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise. As used in the specification and the appended claims, the terms "comprises", "comprising", "includes" and "including" are intended to be open-ended and to mean that other elements can be included. As used in the specification and the appended claims, the term "and / or" means one or the other or both. As used in the specification and the appended claims, the terms "between," "among," and "between about X and Y" are intended to be interpreted to include X and Y. As used in the specification and the appended claims, the term "between about X and Y" means "between about X and about Y," and the term "from about X to Y" means "from about X to about Y."

[0029] In the specification, when it is said that an element is positioned "on", "attached to", "connected to", "coupled to", or "in contact with" another element, etc., the element can be directly positioned on, attached to, connected to, coupled to, or in contact with the other element, or there can be intervening elements. In contrast, when it is said that an element is "directly on", "directly attached to", "directly connected to", "directly coupled to", or "directly in contact with" another element, there can be no intervening elements. In the specification, when it is said that one feature is arranged "adjacent" to another feature, it can mean that the one feature has a portion that overlaps the adjacent feature or a portion that is positioned above or below the adjacent feature.

[0030] In the specification, spatial relational terms such as "upper", "lower", "left", "right", "front", "rear", "high", "low", etc., can illustrate the relationship of one feature to another feature in the drawings. It should be understood that the spatial relational terms include, in addition to the orientation shown in the drawings, different orientations of the device in use or operation. For example, when the device in the drawings is inverted, a feature that was originally described as being "below" the other feature can now be described as being "above" the other feature. The device can also be oriented in other ways (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0031] Reference will now be made to Figure 1 , Figure 1 A fireproof test system 200 according to the present disclosure is shown. The fireproof test system 200 is used to test a fireproof coating of a power battery pack. Specifically, the fireproof test system 200 is used to test the fireproof and heat insulation performance of the fireproof coating.

[0032] The fireproof test system 200 includes a main frame 10, a fixed support 20, a test plate 30, a flame heating device 40, first and second transmission wires 50 and 60, and a temperature measuring device 70.

[0033] The main frame 10 is mainly used to carry the fixed support 20 of the fireproof test system 200, so as to make the fixed support 20 be stably supported on a plane. Meanwhile, the main frame 10 is also used to carry other auxiliary components in the fireproof test system 200, which will be described as follows.

[0034] The main frame 10 is in the form of a rectangular frame, which is mainly used to carry the fixed support 20 of the fireproof test system 200. Figure 1The illustrated embodiment is shown in the form of a simple scaffold-like structure. In this embodiment, the main frame 10 includes three bases 12 lying on a plane, three vertical support poles 14 extending vertically upward from the bases 12, and two horizontal support poles 16 extending horizontally connected to the three vertical support poles 14. The bases 12 can rest on the plane. The connections between the bases 12, the horizontal support poles 16 and the vertical support poles 14 can be achieved by welding, snap-fitting or other known connection means. It will be appreciated by those skilled in the art that the number of bases 12, vertical support poles 14 and horizontal support poles 16 can be varied as desired without departing from the scope of the present disclosure. In addition, the main frame 10 can also take the form of a support other than a truss.

[0035] The fixing support 20 is used to secure the test panel 30 to be tested in a fire test. The fixing support 20 is connected to the main frame 10. As Figure 1 and Figure 2 shown, the fixing support can be connected to one of the vertical support poles 14 of the main frame.

[0036] The fixing support 20 can be configured to be adjustable in height relative to the main frame 10. For example, in the present embodiment, as Figure 1 and Figure 2 shown, the fixing support 20 can be secured to the vertical support pole 14 of the main frame 10 by means of a clamping device with a release screw. By operating the release screw, the fixing support 20 can be released from the vertical support pole 14, thereby allowing the user to adjust the height of the fixing support 20 relative to the main frame 10. It will be appreciated that the fixing support 20 can also be connected to the main frame 10 in a fixed height manner. For example, the fixing support 20 can be directly welded to the main frame 10.

[0037] The test panel 30 is secured to the fixing support 20. As Figure 2 shown, the fixing support 20 can be in the form of a generally rod-like, plate-like or any other suitable elongate extension shape. The fixing support 20 can be provided with an elongate slot 26 such that at least a portion of the test panel 30 can be inserted into the slot 26 and secured therein. Figure 2 The fixing support 20 is shown in the present embodiment to include only one slot 26, but it will be appreciated that the fixing support 20 can be provided with a plurality of slots. Each slot can receive a different plurality of test panels 30 and allow simultaneous fire testing of the plurality of test panels 30.

[0038] It will be appreciated by those skilled in the art that the test panel 30 and the fixing support 20 can be secured in other ways. For example, they can be secured together by means of a bolt connection extending through the test panel 30 and the fixing support 20.

[0039] The test plate 30 is used to carry the fireproof paint to be tested. The test plate 30 is generally plate-shaped. The test plate 30 has a fire-exposed surface 32 and an opposite non-fire-exposed surface 34. The fireproof paint is coated on the fire-exposed surface 32 of the test plate 30. The test plate 30 can be made of the same material as the outer shell surface of the power battery pack to which the fireproof paint is to be coated, such as aluminum, steel, composite material, etc., so as to better simulate the heating performance of the power battery pack in the fireproof test.

[0040] By using the test plate 30 to carry the fireproof paint in the fireproof test, the need for using an actual power battery pack as a carrier can be eliminated, which greatly reduces the space required for the fireproof test and the cost, thereby realizing miniaturization of the fireproof test.

[0041] The flame heating device 40 is used to spray a flame to the fireproof paint on the test plate 30 and apply heat. In the fireproof test system according to the present disclosure, the flame heating device 40 is configured to heat the fireproof paint on the fire-exposed surface 32 of the test plate 30 to more than 1000 degrees Celsius, preferably to about 1300 degrees Celsius. The flame heating device can adopt a butane flame spray gun to achieve a heating temperature of more than 1000 degrees Celsius.

[0042] The flame heating device 40 can be directly placed or fixed on the plane where the main body frame 10 is located.

[0043] The first transmission wire 50 and the second transmission wire 60 are used to connect the test plate 30 and the fireproof paint thereon with the temperature measuring device 70, and are used to transmit a signal representing a temperature from the test plate 30 and the fireproof paint to the temperature measuring device 70.

[0044] Each of the first transmission wire 50 and the second transmission wire 60 has a first end and an opposite second end. A thermocouple element is arranged on the first end of each of the first transmission wire 50 and the second transmission wire 60. The first end of the first transmission wire 50 is connected to a temperature measuring point on the fire-exposed surface 32 of the test plate 30 through the thermocouple element, and the first end of the second transmission wire 60 is connected to a temperature measuring point on the non-fire-exposed surface 34 of the test plate 30 through the thermocouple element.

[0045] The thermocouple element senses the change of temperature based on the first thermoelectric effect to generate a changing voltage, thereby achieving sensing of the temperature.

[0046] Although in the above description, the first transmission wire 50 and the second transmission wire 60 are used to transmit the signal representing the temperature from the test plate 30 to the temperature measuring device 70, the first transmission wire 50 and the second transmission wire 60 can also be used to transmit the signal representing the temperature from the temperature measuring device 70 to the test plate 30. Figure 1The fireproof testing system 200 is shown to include one first transmission wire 50 and one second transmission wire 60, and the fireproof testing system 200 is configured to sense the temperature at one temperature sensing point on the non-fire surface 34 and one temperature sensing point on the fire surface 32 of the test plate 30, but it is understood that the fireproof testing system 200 according to the present disclosure can include more than one first transmission wire 50 and more than one second transmission wire 60 for sensing the temperature at multiple temperature sensing points on the fire surface 32 and the non-fire surface 34 of the test plate 30. For example, the fireproof testing system 200 can include two first transmission wires 50 and three second transmission wires 60, so that the temperature at two temperature sensing points on the fire surface 32 and three temperature sensing points on the non-fire surface 34 can be sensed. In this case, the three second transmission wires 60 can be configured to sense the temperature at three temperature sensing points on the upper, middle and lower part of the non-fire surface 34 of the test plate 30, respectively. Preferably, the sum of the number of the first transmission wires 50 and the second transmission wires 60 is no more than 8.

[0047] By means of the first transmission wire 50 and the second transmission wire 60 connected to the fire surface 32 and the non-fire surface 34 of the test plate 30, respectively, the fireproof testing system according to the present disclosure is capable of monitoring the temperature on both the fire surface 32 and the non-fire surface 34 of the test plate 30 simultaneously, so that the technician is able to have a more comprehensive understanding of the temperature of the test plate 30 and thus the fireproof and heat insulation effect presented by the fireproof coating in the fireproof testing.

[0048] The temperature sensing device 70 is communicatively connected to the second ends of the first transmission wire 50 and the second transmission wire 60. The temperature sensing device 70 continuously receives the temperature at the temperature sensing points connected by the first transmission wire 50 and the second transmission wire 60 via the first transmission wire 50 and the second transmission wire 60, and records these temperatures.

[0049] The temperature sensing device 70 is preferably arranged away from the flame heating device 40 and the test plate 30 to avoid the high temperature in the test affecting the temperature sensing device 70.

[0050] In the fireproof testing system 200 according to the present disclosure, the fireproof testing of the fireproof coating is performed by using the combination of the temperature sensing device 70 and the first transmission wire 50, the second transmission wire 60, which allows the temperature sensing device 70 to collect the temperature data at the temperature sensing points in real time and continuously, rather than being able to obtain the temperature data at discrete time points only as in the prior art using the temperature gun. Thus, the fireproof testing system 200 allows the temperature change at each temperature sensing point during the entire test process to be recorded, thereby facilitating the technician to understand the trend of the temperature change and to avoid missing the key nodes of the temperature change.

[0051] The fire resistance test system 200 according to the present disclosure can further include a thermal imager 100. The thermal imager 100 can be supported on the ground by a stand or other means. The thermal imager 100 optically captures infrared radiation signals and converts them into electrical signals, and processes them via its data processing unit to form a thermal map of the measured object.

[0052] The thermal imager 100 is configured to monitor the temperature in the area of the test plate 30 other than the above-mentioned temperature measurement points in real time, to serve as a supplement to the temperature changes of the temperature measurement points monitored by the temperature measurement device 70. This allows the technician to roughly grasp the temperature changes on the entire non-fire surface 34 or fire surface 32 of the test plate 30 during the fire resistance test. Preferably, the thermal imager 100 is arranged to be aimed at the non-fire surface 34 of the test plate 30 to monitor the temperature changes on the non-fire surface 34 (such as the process of temperature spreading from the center of the test plate 30 to the periphery), for grasping the entire transmission process of heat on the test plate after the occurrence of thermal runaway.

[0053] In order to monitor the temperature changes of the entire surface of each of the non-fire surface 34 and the fire surface 32 at the same time, two thermal imagers 100 can be respectively provided for monitoring the non-fire surface 34 and the fire surface 32, respectively.

[0054] The fire resistance test system 200 can further include a fume hood 90. The fume hood 90 has an internal space 95 that can be ventilated with the outside thereof. The main body frame 10, the fixing stand 20, the test plate 30, and the flame heating device 40 are arranged in the internal space 95.

[0055] The fire resistance test system 200 can further include an oxygen and explosion measurement device 110. The oxygen and explosion measurement device 110 is configured to monitor the oxygen concentration and the flammable gas concentration in the surrounding environment, whereby the technician can check whether there is a risk of accidental combustion or explosion in the environment for the fire resistance test. The oxygen and explosion measurement device 110 is fixed to the main body frame 10. Preferably, the oxygen and explosion measurement device 110 is fixed to the horizontal support rod 16 of the main body frame 10.

[0056] The fire resistance test system 200 can further include a display device 120. The display device 120 is in communication with the temperature measurement device 70. For example, the display device 120 is in communication with the temperature measurement device 70 in the form of a wired connection or a wireless connection. The display device 120 is configured to visually display the values of the temperatures received by the temperature measurement device 70 from the first transmission lead 50 and the second transmission lead 60. The display device 120 can be any device capable of displaying images, including but not limited to a display, a tablet, or a smartphone.

[0057] The above describes an embodiment in which the fire resistance test is performed after applying a fire resistance coating on the fire surface 32 of the test plate 30, but the present disclosure is not limited thereto.

[0058] For the purpose of simulation of a special fireproof configuration of a battery pack, in an alternative embodiment, the test plate 30 has a non-fire face and an opposite first attachment face. The fireproof test system 200 further comprises a shield layer having a fire face and an opposite second attachment face. A fireproof coating is coated between the first attachment face of the test plate 30 and the second attachment face of the shield layer. The test plate 30 and the shield layer thereby sandwich the fireproof coating therebetween. The flame heating device 40 is configured to heat the fire face of the shield layer to greater than 2000 degrees Celsius. In this embodiment, the fireproof test system 200 additionally comprises at least one third transmission wire. The third transmission wire is identical to the other transmission wires, which also have a first end and an opposite second end and are provided with a thermocouple element on the first end. In this embodiment, the first end of the first transmission wire 50 is connected by the thermocouple element to a temperature measuring point on the fire face of the shield layer, the first end of the second transmission wire 60 is connected by the thermocouple element to a temperature measuring point on the non-fire face of the test plate 30, and the first end of the third transmission wire is connected by the thermocouple element to a temperature measuring point on the intermediate fireproof coating. The temperature measuring device 70 is communicatively connected to the second ends of the first transmission wire 50, the second transmission wire 60 and the third transmission wire, wherein the temperature measuring device 70 continuously receives and records the temperatures at the temperature measuring points via the first transmission wire 50, the second transmission wire 60 and the third transmission wire.

[0059] Preferably, the above-mentioned shield layer is made of mica material.

[0060] While exemplary embodiments of the present disclosure have been described, it is to be understood that the exemplary embodiments of the present disclosure are susceptible to various modifications and alternative forms well known to those skilled in the art without departing from the spirit and scope of the present disclosure. Therefore, all modifications and alterations to encompass within the scope of the present disclosure as defined by the following claims are intended to be within the scope of the present disclosure. The present disclosure is defined by the appended claims and their equivalents.

Claims

1. A fire test system (200) for testing a fireproofing coating of a power battery pack, characterized by, The fireproof test system (200) comprises: a main frame (10); a fixing support (20) connected to the main frame (10); a test plate (30) having a fire-exposed surface (32) and an opposite non-fire-exposed surface (34), the test plate (30) being fixed on the fixing support (20), the fireproof coating being coated on the fire-exposed surface (32) of the test plate (30); a flame heating device (40) configured to heat the fireproof coating on the fire-exposed surface (32) of the test plate (30) to greater than 2000 degrees Celsius; at least one first transmission wire (50) and at least one second transmission wire (60), each of the first transmission wire (50) and the second transmission wire (60) having a first end and an opposite second end, a thermocouple element being disposed on the first end of the first transmission wire (50) and the second transmission wire (60), wherein the first end of the first transmission wire (50) is connected to a temperature measuring point on the fire-exposed surface (32) of the test plate (30) through the thermocouple element, and the first end of the second transmission wire (60) is connected to a temperature measuring point on the non-fire-exposed surface (34) of the test plate (30) through the thermocouple element; and a temperature measuring device (70) communicatively connected to the second end of the first transmission wire (50) and the second transmission wire (60), wherein the temperature measuring device (70) continuously receives and records the temperature at the temperature measuring point via the first transmission wire (50) and the second transmission wire (60).

2. The fire test system (200) of claim 1, wherein, The fireproof test system (200) further comprises a thermal imager (100) configured to monitor the temperature in the area other than the temperature measuring point on the test plate (30) in real time.

3. The fire test system (200) of claim 1, wherein, The fireproof test system (200) further comprises a fume hood (90) having an internal space (95) capable of being ventilated with the outside of the fume hood (90), the main frame (10), the fixing support (20), the test plate (30), and the flame heating device (40) being arranged in the internal space (95).

4. The fire test system (200) according to any one of claims 1 to 3, characterized in that The fireproof test system (200) further comprises an oxygen and explosion measuring device (110) configured to monitor the oxygen concentration and the flammable gas concentration in the surrounding environment, and the oxygen and explosion measuring device (110) is fixed to the main frame (10).

5. The fire test system (200) according to any one of claims 1 to 3, characterized in that The fireproof test system (200) further comprises a display device (120) in communication with the temperature measuring device (70), the display device (120) being configured to visually display the value of the temperature received by the temperature measuring device (70).

6. The fire test system (200) according to any one of claims 1 to 3, characterized in that At least one elongated slot (26) is provided on the fixing support (20), so that at least a portion of the test plate (30) can be inserted and fixed in the slot (26).

7. The fire test system (200) according to any one of claims 1 to 3, characterized in that The flame heating device (40) is a butane flame spray gun.

8. The fire test system (200) according to any one of claims 1 to 3, characterized in that The main frame (10) includes a base (12), a vertical support pole (14) extending vertically from the base (12), and a horizontal support pole (16) extending horizontally connected to the vertical support pole (14).

9. The fire test system (200) of claim 8, wherein, The fixed bracket (20) is fixed to the vertical support pole (14) of the main frame (10), and the fixed bracket (20) is configured to adjust the height of the fixed bracket (20) relative to the main frame (10).

10. The fire test system (200) according to any one of claims 1 to 3, characterized in that The test plate is made of the same material as the material of the shell of the power battery pack.

11. A fire test system (200) for testing a fireproofing coating of a power battery pack, the fire test system (200) comprising: The fireproof test system (200) includes: a main frame (10); a fixed bracket (20) connected to the main frame (10); a test plate (30) having a first attachment surface and an opposite non-fire surface, the test plate (30) being fixed on the fixed bracket (20); a protective layer having a fire surface and an opposite second attachment surface, the fireproof coating being coated on the second attachment surface of the protective layer, wherein the fireproof coating is coated between the first attachment surface of the test plate (30) and the second attachment surface of the protective layer; a flame heating device (40) configured to heat the fire surface of the protective layer to greater than 2000 degrees Celsius; at least one first transmission wire (50), at least one second transmission wire (60) and at least one third transmission wire, each of the first transmission wire (50), the second transmission wire (60) and the third transmission wire having a first end and an opposite second end, the first ends of the first transmission wire (50), the second transmission wire (60) and the third transmission wire being provided with thermocouple elements, wherein the first end of the first transmission wire (50) is connected to a temperature measurement point on the fire surface of the protective layer through the thermocouple element, the first end of the second transmission wire (60) is connected to the non-fire surface of the test plate (30) through the thermocouple element, and the first end of the third transmission wire is connected to a temperature measurement point on the fireproof coating through the thermocouple element; and a temperature measuring device (70) communicatively connected to the second ends of the first transmission wire (50), the second transmission wire (60) and the third transmission wire, wherein the temperature measuring device (70) continuously receives and records the temperature at the temperature measurement points via the first transmission wire (50), the second transmission wire (60) and the third transmission wire.

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