CN111239182A - Thermal insulation performance testing equipment and thermal insulation performance testing method - Google Patents

Abstract

The invention relates to a heat insulation performance testing device. This heat-proof quality test equipment includes: a heat source device capable of raising a temperature to a target temperature; and the testing chuck is used for fixing a testing sample to be tested to a first surface of the testing chuck, the first surface faces the heat source device, and in the testing position, the first surface of the testing chuck is close to the heat source device and a gap between the first surface of the testing chuck and the heat source device is a testing gap. The insulation performance testing apparatus further includes a gap adjustment device configured to adjust the test gap. The invention also relates to a heat insulation performance testing method. According to the heat insulation performance testing equipment and the heat insulation performance testing method, the actual heat insulation effect can be accurately tested, the applicability of the heat insulation performance testing equipment is improved, the implementation of the heat insulation performance test can be simplified, the testing cost is reduced, and the testing safety is improved.

Description

Thermal insulation performance testing equipment and thermal insulation performance testing method

technical field

The invention relates to a thermal insulation performance testing device and a thermal insulation performance testing method.

Background technique

The contents in this section merely provide background information related to the present disclosure and may not constitute prior art.

Insulation materials are widely used in industry to insulate heat by blocking or delaying heat transfer for various purposes. In the field of electric vehicles, as an important component of electric vehicles, the performance of battery modules is closely related to the performance of electric vehicles. Factors such as energy density, total energy capacity, and installability of battery modules have always been the focus of electric vehicle manufacturers and users. important factors to consider. In addition, from a safety point of view, the safety performance of battery modules for electric vehicles is also critical. A battery module typically consists of a plurality of battery cells, which are arranged close to each other, for example, side by side or on top of each other. A prismatic battery cell is a more common type of battery cell, and in a battery module, a plurality of prismatic battery cells are usually stacked on top of each other. During use, once a battery cell overheats and fails, the heat will be conducted to other adjacent battery cells, which will quickly cause other battery cells to overheat, fail, or even explode, posing a threat to the safety of passengers. In order to avoid the heat transfer between the battery cells in the battery module, which may lead to explosion, heat insulation materials are usually arranged between the battery cells to block or delay the heat transfer between the battery cells, avoid or delay the explosion, and delay the spread of fire, so as to prevent or delay the explosion. Buy as much time as possible for the safe evacuation of the occupants. In this regard, the thermal insulation performance of the thermal insulation material between adjacent battery cells is very important, and the thermal insulation performance of the thermal insulation material needs to meet the specified requirements. For example, when a battery cell of the battery module fails due to overheating, the temperature of one side of the thermal insulation material may reach 400°C, or even as high as 600°C, but in order to achieve the required thermal insulation effect, the other side of the thermal insulation material is often required to be (Insulation side) temperature does not exceed 150°C. Therefore, before the electric vehicle is put into use, the thermal insulation performance test of the thermal insulation material to be used needs to be carried out.

In the existing thermal insulation performance test for battery modules, it is often necessary to test the actual battery module, and the battery module is heated and overcharged to make the battery cells of the battery module overheat and fail to test the battery. The thermal insulation properties of the thermal insulation material used in the module. For different types of battery modules, the interval between battery cells is different, which requires that the interval between the heat source and the battery cells to be tested needs to be adjusted according to the type of battery module during the thermal insulation performance test. However, the distance between the heat source of the existing test equipment and the battery cells to be tested is fixed, the same test equipment cannot adapt to the thermal insulation performance tests with different intervals, and the versatility of the test equipment is limited, which makes it difficult to use this kind of test equipment. When testing the thermal insulation performance of the equipment, the test platform needs to be rebuilt every time for different test samples, and it is difficult to reliably control the temperature of the heat source during the test process, and the test preparation and operation are complicated. On the other hand, the existing thermal insulation performance testing equipment and thermal insulation performance testing methods are destructive tests of battery modules, which are expensive to test, and may explode during the testing process, so there may also be safety issues.

SUMMARY OF THE INVENTION

An object of the present invention is to provide an improved thermal insulation performance testing equipment and thermal insulation performance testing equipment, so as to improve the applicability of thermal insulation performance testing equipment, simplify the implementation of thermal insulation performance testing, reduce testing costs, and improve testing safety sex.

One aspect of the present invention is to provide a thermal insulation performance testing device. The thermal insulation performance testing equipment includes: a heat source device, which can be heated to a target temperature; and a test chuck, a test sample to be tested is fixed to a first surface of the test chuck, the first surface facing the heat source device, in the test position , the first surface of the test chuck is close to the heat source device and the gap with the heat source device is the test gap. The thermal insulation performance testing equipment further includes a gap adjustment device configured to adjust the test gap.

The thermal insulation performance testing apparatus further includes a collet moving device configured to move the test collet toward the heat source device to the test position or from the test position away from the heat source device.

In one embodiment, the collet moving device includes an actuator configured to move the movable member towards or away from the heat source device and a movable member, wherein the test collet is removably secured to the movable member. moving components.

In one embodiment, the test chuck is secured to the chuck moving device via an adapter plate.

In one embodiment, the gap adjustment device includes a sliding plate and a trimmer, the actuator is fixed to the sliding plate, and the trimmer is operable to move the sliding plate toward or away from the heat source device.

The clearance adjustment device further includes a locking device configured to lock the sliding plate such that the position of the sliding plate relative to the heat source device is locked.

The actuator is any one of the following: an air cylinder, an electric cylinder, and a hydraulic cylinder.

The test cartridge is provided with a thermocouple configured to measure the temperature at the fixed interface between the first surface of the test cartridge and the test sample.

The heat source device includes a heating plate and an electric heater, and the heat source device is configured such that the electric heater can heat the heating plate to a target temperature.

In one embodiment, the thermal insulation performance testing apparatus further includes a controller configured to stop the heating of the electric heater when the heating plate is heated to the target temperature.

The test sample is the insulating material to be placed on the target product, and the material of the test chuck is the same as the material of the housing of the target product.

In one embodiment, the target product is a battery cell of a battery module.

Another aspect of the present invention is to provide a method for testing thermal insulation properties. The thermal insulation performance testing method includes: setting a test position; heating the heat source device to a target temperature; testing a first test sample to be tested with a first test gap, and recording the first test sample and the fixed first test sample The temperature at the first fixed interface between the first test chucks changes with time, wherein the first fixed interface faces the heat source device, and the first test gap is the gap between the first fixed interface and the heat source device; the first After the test of the test sample is completed, the second test sample to be tested is tested with the second test gap, and the second fixed interface between the second test sample and the second test chuck on which the second test sample is fixed is recorded. The change of temperature over time, wherein the second fixed interface faces the heat source device, the second test gap is the gap between the second fixed interface and the heat source device, and the second test gap may be equal to the first test gap or not equal to the first test gap gap.

The settings are different for at least one of the following groups: (1) a first test sample and a second test sample; (2) a first test chuck and a second test chuck; (3) a first test gap and a second test Two test gaps.

In one embodiment, the heat source device includes a heating plate and an electric heater, the electric heater is configured to heat the heating plate to a target temperature, and when the heating plate is heated to the target temperature, the electric heater stops heating.

In one embodiment, the first test sample and the second test sample are thermal insulation materials to be applied to the corresponding target products, respectively, and the material of the first test clip and the material of the second test clip are the same as the corresponding target The material of the product is the same.

Once the first test sample is tested with the first test gap for a predetermined time, the test of the first test sample is ended, and the temperature at the first fixed interface at this time is recorded. Alternatively, once the temperature at the first fixed interface reaches a predetermined temperature, the test of the first test sample is ended, and the test duration of the first test sample is recorded.

Once the second test sample is tested with the second test gap for a predetermined time, the test of the second test sample is ended, and the temperature at the second fixed interface at this time is recorded. Alternatively, once the temperature at the second fixed interface reaches the predetermined temperature, the test of the second test sample is ended, and the test duration of the second test sample is recorded.

The above-mentioned thermal insulation performance testing method is implemented using the thermal insulation performance testing equipment according to the present invention.

The invention provides an improved thermal insulation performance testing equipment and thermal insulation performance testing method. With the thermal insulation performance testing equipment and thermal insulation performance testing method according to the present invention, the test positions and appropriate test gaps can be set for different target products using thermal insulation materials, the actual thermal insulation effect can be accurately tested, and the actual thermal insulation effect can be accurately tested. Improving the applicability of thermal insulation testing equipment and simulating the actual target product through the test chuck can simplify the implementation of thermal insulation performance testing, reduce testing costs, and improve testing safety.

Description of drawings

Embodiments of the present invention will be described below, by way of example only, with reference to the accompanying drawings. In the drawings, identical features or components are designated by the same reference numerals, and the drawings are not necessarily drawn to scale, and in the drawings:

1 shows a perspective view of a thermal insulation performance testing device according to an embodiment of the present invention;

FIG. 2 shows a perspective view of the thermal insulation performance testing device in FIG. 1 viewed from another angle;

Fig. 3 shows the front view of the thermal insulation performance testing equipment in Fig. 2;

Fig. 4 shows another front view of the thermal insulation performance testing apparatus in Fig. 2, wherein the cover of the heat source device is removed;

Fig. 5 shows the perspective view of the test chuck of the thermal insulation performance testing equipment in Fig. 2;

FIG. 6 shows a plan view of the test chuck of the thermal insulation performance testing apparatus in FIG. 2;

Figure 7 shows a perspective view of a test chuck with a test sample installed;

Fig. 8 shows the flow chart of the thermal insulation performance testing method according to the present invention; and

FIG. 9 shows an example of a test result graph of the thermal insulation performance test according to the present invention.

Detailed ways

The following description is merely exemplary in nature and is not intended to limit the invention, applications, and uses. It should be understood that throughout the drawings, like reference numerals refer to the same or similar parts and features. The various drawings only schematically represent the concept and principle of the embodiments of the present invention, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present invention. Certain parts of certain figures may be used to illustrate details or structures relevant to embodiments of the invention in an exaggerated manner.

In the description of the embodiments of the present invention, the orientation terms used in relation to "upper", "lower", "left" and "right" are upper, lower, left, right position to describe. In practical applications, the positional relationships of "up", "down", "left" and "right" used in this document may be defined according to actual conditions, and these relationships may be reversed.

1 and 2 respectively show a perspective view of a thermal insulation performance testing apparatus 1 according to an embodiment of the present invention, and FIGS. 3 and 4 respectively illustrate a front view of the thermal insulation performance testing apparatus 1 . As shown in FIGS. 1 and 2 , the thermal insulation performance testing apparatus 1 includes a test table 10 , a test chuck 20 , a chuck moving device 30 , a gap adjusting device 40 and a heat source device 50 . The test chuck 20 , the chuck moving device 30 , the gap adjustment device 40 and the heat source device 50 are mounted on the test table 10 , and are mounted to the thermal insulation performance test table through the test table 10 . When the thermal insulation performance testing equipment 1 is installed on the thermal insulation performance testing bench through the test table 10 , a cover 70 is installed for the heat source device 50 to prevent the operator from being accidentally scalded by the heat source device 50 .

The test chuck 20 is mounted to a chuck mover 30 configured to move the test chuck 20 towards the heat source arrangement 50 to a test position, as shown in Figure 4, or back from the test position, as shown in Figures 1-3 shown. The collet moving device 30 is mounted to the gap adjusting device 40 , through which the position of the collet moving device 30 in the X direction can be adjusted, and thereby the test position of the test collet 20 relative to the heat source device 50 can be adjusted. After the test position is set by the gap adjusting device 40, the thermal insulation material to be tested is installed on the test chuck 20, and if the switch 31 is turned on, the chuck moving device 30 moves the test chuck 20 to the test position to perform thermal insulation performance test. Each part of the thermal insulation testing equipment 1 according to the present invention and the thermal insulation performance testing method according to the present invention will be introduced below with reference to the accompanying drawings.

5 and 6 show a perspective view and a plan view of the test cartridge 20 . As shown in FIGS. 5 and 6 , the test cartridge 20 includes a cartridge body 21 , a thermocouple mount 23 and a thermocouple 24 . The collet body 21 is made of the same material as the shell of the target product using the thermal insulation material to be tested, and the thickness of the collet body 21 can be the same as the thickness of the shell of the target product, thereby simulating the use of the collet body 21 The target product of the thermal insulation material to be tested, in order to obtain the temperature rise characteristics of the target product during the thermal insulation performance test. In this example, a battery cell in a battery module of an electric vehicle is taken as an example of a target product. The collet body 21 can be made of aluminum material, for example, and the thickness of the collet body 21 is the same as that of the battery cell casing, so that the battery cell casing of the battery module using the thermal insulation material to be tested is simulated by the collet body 21, In order to obtain the temperature rise characteristics of the battery cell shell during the thermal insulation performance test. A thermocouple mount 23 is mounted to the collet body 21 . In this example, the thermocouple mount 23 has a generally T-shaped outer profile, and the collet body 21 is provided with a T-shaped slot for mounting the thermocouple mount 23 , the T-slot opening on the surface 213 of the collet body 21 . Alternatively, the thermocouple mounting member 23 may also be formed to have other outer contour shapes, and correspondingly shaped mounting grooves are formed on the collet body 21 . For example, the thermocouple mounts 23 may be wedge-shaped, with corresponding wedge-shaped grooves formed in the collet body 21 . The thermocouple mount 23 is mounted such that the surface 231 of the thermocouple mount 23 is substantially flush with the surface 213 of the collet body 21 . The thermocouple mounting member 23 is formed with an open groove 232 extending from one end of the thermocouple mounting member 23 to a middle portion of the thermocouple mounting member 23 . Thermocouple 24 is mounted in open slot 232 . The thermocouple 24 is also connected to a collector (not shown) to display the temperature measured by the thermocouple 24 in real time and to display the temperature rise characteristic. In one example, the thermocouple 24 is a K-type thermocouple.

In this example, the collet body 21 is mounted to the collet moving device 30 via the adapter plate 22 . Preferably, the adapter plate 22 is also made of the same material as the battery cell casing to which the insulating material to be tested is applied. The collet body 21 is detachably mounted to the adapter plate 22 and has substantially the same shape as the adapter plate 22 . In this example, as shown in FIGS. 5 to 6 , the collet body 21 and the adapter plate 22 are generally cross-shaped. Screw holes 211 and 212 are formed at two ends of the collet body 21 , respectively, and through holes (not shown) are formed at corresponding positions of the adapter plate 22 . The collet body 21 is mounted to the adapter plate 22 by passing screws (not shown) through the through holes of the adapter plate 22 and into the threaded holes 211 , 212 of the collet body 21 . Alternatively, through holes may be formed in the collet body 21 and threaded holes may be formed in the adapter plate 22 . The test chuck 20 is mounted to the chuck moving device 30 via the adapter plate 22 . With this arrangement, when the collet body 21 is replaced, the collet body 21 can be detached from the adapter plate 22 by simply screwing the screws in the threaded holes 211 and 212, and the The holes 211 and 212 allow the new collet body to be installed on the adapter plate 22 without the need for complicated disassembly between the collet body 21 and the collet moving device 30 each time (for example, four one or more screws) and installation, so the replacement and installation of the collet body 21 can be simplified. In addition, each time the test is performed, the temperature of the collet body 22 needs to be lowered to room temperature. This cooling process of the collet body 22 is time-consuming. By installing the collet body 21 in a detachable manner, after the test is completed, the collet body 21 can be removed, and another collet body at room temperature can be installed on the adapter plate 22 to continue the test, while There is no need to wait for the collet body 22 to cool down, so the efficiency of the test can be improved.

The insulating material M to be tested is mounted to the surface 213 of the collet body 21 as shown in FIG. 7 . After the insulating material M to be tested is mounted to the surface 213 of the collet body 21 , it can be fixed using the clamps 62 , 63 (see FIGS. 1 and 2 ). The clamps 62, 63 are respectively provided at both ends of the chuck body 21 so as not to interfere with the test of the heat insulating material M located in the middle. In this example, the clamp 62 is a U-shaped clamp including a first part 621 and a second part 622 opposite to each other and a connecting part 623 connecting the first part 621 and the second part 622 . When the heat insulating material M is fixed, the first part 621 of the clamp 62 faces the heat insulating material M, and the second part 622 of the clamp 62 faces the adapter plate 22 . The second part 622 of the clamp 62 is provided with an adjusting screw (not shown), and by adjusting the adjusting screw on the second part 622, the first part 621 can tightly fix the heat insulating material M on the surface 213 of the collet body 621 . The jig 62 and the jig 63 have the same configuration, and the description is not repeated here. In addition, the heat insulating material M can also be fixed to the collet body 21 by using other ways or other forms of clamps. For example, the heat insulating material M may also be directly adhered to the collet body 21 by an adhesive tape.

Referring again to FIGS. 1 to 4 , the collet moving device 30 includes a switch 31 , an actuator 32 and a movable member 33 . The switch 31 can be operated to activate or deactivate the actuator 32 so that the movable member 33 is telescoping relative to the actuator 32 . In this example, the actuator 32 is an air cylinder, and the movable member 33 is a telescopic rod. However, the present invention is not limited to this. In other embodiments according to the present invention, the actuator 32 may also adopt other types, for example, an electric actuator, a hydraulic cylinder, and the like. One end of the movable member 33 is mounted to the actuator 32 , the other end of the movable member 33 is fixedly mounted with a mounting plate 34 for mounting the test chuck 20 , and the adapter plate 22 of the test chuck 20 is fixed to the mounting plate 34 . The actuator 32 is configured to move the movable member 33 in the X direction. When the switch 31 is closed, the actuator 32 is not actuated, and the movable member 33 is retracted in the housing of the actuator 32 as shown in FIGS. 1 to 3 . When the switch 31 is opened, the actuator 32 is in communication with a gas source (not shown), the actuator 32 is actuated, and the movable member 33 is moved relative to the actuator 32 and out of the housing of the actuator 32 As shown in FIG. 4 , the movable member 33 pushes the test chuck 20 to move to the test position. Once the switch 31 is closed, the communication between the actuator 32 and the gas source is cut off and the movable member 33 is moved from the test position towards the actuator 32 and retracted into the housing of the actuator 32 . By setting the gas pressure in the actuator 32 and setting the test position of the test chuck 20, the pressure on the chuck body 21 during the thermal insulation performance test can be adjusted to simulate as closely as possible the temperature that occurs in the battery cell casing Elevation process. For the same type of battery module to be tested, the gas pressure within the actuator 32 and the test position of the test chuck 20 are the same.

The chuck moving device 30 is mounted to the clearance adjusting device 40 via the first mounting member 61 . The switch 31 and the actuator 32 of the chuck moving device 30 are fixed to the vertical wall portion 611 of the first mounting member 61 , and the horizontal wall portion 612 of the first mounting member 61 is fixedly mounted to the gap adjusting device 40 .

The gap adjusting device 40 is fixedly installed on one end of the test bed 10 , and includes a base plate 41 , a sliding plate 42 , a fine adjuster 43 and a position locking device 44 . The base plate 41 is fixedly mounted on the test bed 10 . The slide plate 42 is mounted on the base plate 41 and is movable in the X direction with respect to the base plate 41 . The horizontal wall portion 612 of the first mounting member 61 is fixedly mounted to the sliding plate 42 and can move in the X direction together with the sliding plate 42 . As shown in FIG. 2 , the trimmer 43 is installed on one side of the thermal insulation performance testing apparatus 1 , and includes an adjusting part 431 , a fixing block 432 and a limiting block 433 . The fixing block 432 is fixedly mounted on the base plate 41 , the limiting block 433 is fixedly mounted on the sliding plate 42 , and the end of the adjusting portion 431 passes through the fixing block 432 and is connected to the limiting block 433 . The fine adjuster 43 is configured to drive the limiting block 433 to move along the X direction through the rotation of the adjusting portion 431 , and thereby drive the sliding plate 42 to move along the X direction. For example, when the adjusting part 431 is rotated in one direction, the limiting block 433 is driven to move toward the heat source device 50 in the X direction, and when the adjusting part 431 is rotated in the opposite direction, the limiting block 433 is driven to move away from the heat source in the X direction Device 50 moves. In one example, the spinner 43 may employ a micrometer. In addition, as shown in FIG. 1 , the position locking device 44 is installed on the other side of the thermal insulation performance testing apparatus 1 , and includes a positioning plate 441 and a set screw 442 . The positioning plate 441 is provided with a groove portion, and is fixedly mounted on the side surface of the base plate 41 , and is installed such that the groove portion of the positioning plate 441 extends in the X direction in the drawing and is aligned with the sliding plate 42 . The ends of the set screws 47 pass through the grooves of the positioning plate 441 and can be screwed against the sliding plate 42 to lock the position of the sliding plate 42 relative to the base plate 41 and the test bed 10 in the X direction. When the set screw 47 does not lock the sliding plate 42, the trimmer 43 can be adjusted to move the sliding plate 42 in the X direction accordingly, so that the surface 213 of the body portion 21 of the test chuck 20 can be adjusted during the thermal insulation performance test. The test gap between the heat source device 50 and the heat source device 50 is adapted to the test requirements of the gap between adjacent battery cell casings in different types of battery modules, and the applicable scope of the thermal insulation performance testing equipment 1 is expanded.

The heat source device 50 is fixedly mounted on the other end of the test table 10 . In this example, as shown in FIGS. 1 and 2 , the heat source device 50 includes a heating plate 51 and an electric heater 52 provided in the heating plate 51 . In this example, the electric heater 52 is a plurality of resistive heating rods. The heat source device 50 is configured to heat the heating plate 51 to a predetermined target temperature by the electric heater 52 . The heating plate 51 is used as the heat source for the thermal insulation performance test. The heat source device 50 is also provided with a thermocouple (not shown) for measuring the temperature of the heating plate 51 . The thermocouple is connected to a temperature control box (not shown), and once the temperature measured by the thermocouple (ie, the temperature of the heating plate 51 ) reaches the target temperature, the temperature control box controls the electric heater 52 so that the electric heater 52 Stop heating. Preferably, the temperature control box is further provided with a temperature display screen, which can display the temperature of the heating plate 51 measured by the thermocouple in real time. When the thermal insulation performance testing apparatus 1 is installed on the test bench, a cover 70 may be provided for the heat source device 50 to prevent the operator from being scalded by accidentally touching the heat source device 50 during the test. The housing 70 is configured to shield the heat source device 50 and expose the surface 511 of the heating plate 51 of the heat source device 50 so that the test chuck 20 can approach or contact the surface 511 of the heating plate 51 .

The main structure of the thermal insulation performance testing apparatus 1 according to the first embodiment of the present invention has been described above. The thermal insulation performance testing apparatus 1 according to the present invention can adjust the test gap through the gap adjustment device 40, so that it can be applied to thermal insulation performance testing of different types of battery cells, and can simplify the test preparation work. In addition, the thermal insulation performance testing apparatus 1 according to the present invention employs the test chuck 20 to simulate a battery cell, and sets the test position of the test chuck 20 by setting the actuation force of the actuator 32 (gas pressure in the cylinder) and setting the test chuck 20 , the degree of contact between the test chuck 20 and the heat source device 50 during the test can be adjusted, so that the pressure on the chuck body 21 of the test chuck 20 during the test can be adjusted, and the heating temperature rise of the battery cell shell can be realistically simulated. High characteristics can improve the accuracy of testing, and do not need to use actual battery cells for testing, which can reduce testing costs and improve testing safety.

The thermal insulation performance testing method according to the first embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 8 shows a flow chart of the thermal insulation performance testing method according to the first embodiment of the present invention. As shown in FIG. 8, first, in step S10, a test position is set. The step S10 of setting the test position includes step S11 and step S12. In step S11, the position zero point is set. During this process, the chuck body 21 of the test chuck 20 is fixedly mounted to the mounting plate 34 of the movable member 33 of the chuck moving device 30 via the adapter plate 22 . Then, the switch 31 is turned on, and the actuator 32 is actuated to move the movable member 33 toward the heat source device 50 , out of the housing of the actuator 32 , and in contact with the heating plate 51 of the heat source device 50 . This position is set as the position zero of the thermal insulation performance testing apparatus 1 . Then, in step S12, the test gap is set according to the gap between the battery cell casings in the battery module using the heat insulating material M to be tested, thereby setting the test position. For battery modules used in electric vehicles, for example, the test gap can be set between 2 mm and 8 mm. By screwing the adjusting portion 431 of the fine adjuster 43, the limiting block 433 and the sliding plate 42 are driven to move in the X direction, so that the gap in the X direction between the surface 213 of the chuck body 21 and the surface 511 of the heating plate 51 is The set test gap. Once in place, the set screw 442 is tightened to lock the slide plate 42 to complete the setting of the test position. In addition, in this process, the actuating force of the actuator 20 (gas pressure in the cylinder) can also be set according to the actual situation of the battery module and combined with the set test position to adjust the chuck body 21 during the test The force at the time, thus simulating the force of the battery cell. Once the test position is set, the switch 31 is turned off so that the movable member 33 drives the test chuck 20 back from the test position.

Next, in step S20, the temperature of the heat source device 50 is raised to the target temperature. When the electric heater 52 is turned on, the heating plate 51 is heated, and the temperature of the heating plate 51 is displayed in real time. Once the heating plate 51 is heated to a target temperature, eg, 600°C, the heating is stopped. Next, in step S30, the test sample is fixed to the test chuck. In this example, the insulating material M is fixedly mounted to the test chuck 20 , and the cell casing is simulated by the chuck body 21 . The heat insulating material M is aligned to the surface 213 of the collet body 21 , and then the heat insulating material M is fixed on the clamp body 21 by the clamps 62 , 63 or in other ways. In this process, in order to prevent the heat of the heat source device 50 from being radiated to the heat insulating material M and the chuck body 21 before the test is started and affecting the test result, the heat source device 50 can be shielded. For example, the open side of the housing 70 facing the test cartridge 20 may be shielded with a heat shield.

Next, in step S40, the test is started. The switch 31 is turned on, the actuator 32 is actuated, and the movable member 33 and the test chuck 20 are moved toward the heating plate 51 to the test position, so that the insulating material M is clamped (eg, compressed) in the chuck body 21 In the test gap between the surface 213 and the surface 511 of the heating plate 51, the heat insulating material M is tested with the set test gap. During this process, the thermocouple 24 measures the temperature of the heat insulating side (the side facing the collet body 21 ) of the heat insulating material M in real time, that is, the temperature at the fixed interface between the collet body 21 and the heat insulating material M The temperature is displayed on the collector in real time.

Once the test time of the thermal insulation material M has reached the predetermined test duration, the test chuck 20 is removed from the test position, and the temperature rise characteristic of the thermal insulation material M during the test duration is read. The test duration of the heat insulating material M refers to the time elapsed for the heat insulating material M to be tested with the set test gap from the time when the heat insulating material M moves to the test position with the test chuck 20 . If the temperature of the heat insulating material M after the test duration is lower than the predetermined temperature at the set test interval, the heat insulating performance of the heat insulating material M meets the requirements; otherwise, it does not meet the requirements. Figure 9 shows a temperature rise graph for a test example. The purpose of this example is to measure the temperature rise characteristic of the insulating side of the insulating material M in five minutes, the test duration is five minutes, and the predetermined temperature is 150°C. The horizontal axis in FIG. 9 represents time, and the vertical axis represents temperature. As shown in FIG. 9 , in this test performed, the temperature of the insulating side of the insulating material M was below 70° C. for five minutes (300 seconds), and for the temperature of the insulating side (for example, the thermocouple 24 measured The obtained temperature) does not exceed the requirement of 150°C within five minutes, and the test result shows that the thermal insulation performance of the thermal insulation material M is in compliance with the requirements. In the above example, the test is ended by testing the insulating material M with a set test gap for a test period of time. However, the present invention is not limited thereto, and in the modified example according to the present invention, the test may be ended according to the temperature of the heat insulating side of the heat insulating material M. For example, once the temperature measured by the thermocouple 24 reaches a predetermined temperature, the test may be The test chuck 20 is removed from the test position and the duration of the test experienced by the insulating material M is recorded. If the test duration is longer than the preset test time (for example, the temperature rise time threshold of the target product), it means that the thermal insulation performance of the thermal insulation material M meets the requirements, otherwise, it does not meet the requirements.

After this test is completed, another test sample can be tested, and the test gap of the other test sample can be the same as or different from the test gap of the previous test sample. For example, after the first test sample is tested with the first test gap, if it is necessary to continue to test the second test sample of other thermal insulation materials of the battery module of the same model, the test gap of the second test sample can be equal to For the first test gap, there is no need to reset the test position, just remove the test chuck 20 from the adapter plate 22, fix the second test sample to another test chuck and fix the test chuck to the turntable. Connect the board to test. Or, alternatively, after the test chuck 20 has cooled, the second test sample can be fixed to the test chuck 20 and to the adapter plate for testing. If after the first test sample is tested with the first test gap, the second test sample of the heat insulating material used in another model of battery module with a different gap between adjacent battery cell casings is required to be tested, then The test gap of the second test sample is different from the first test gap. Therefore, as described above, the thermal insulation performance test of the second test sample can be performed after setting the test position adjustment test by the gap adjusting device 40 and continuing the test.

The thermal insulation performance testing equipment and thermal insulation performance testing method according to the preferred embodiments of the present invention have been described above with reference to the accompanying drawings. The thermal insulation performance testing equipment and thermal insulation performance testing method according to the present invention can simulate the actual application environment of the thermal insulation material to accurately test the thermal insulation performance of the thermal insulation material, and can set corresponding test gaps according to different application environments, simplifying Test preparation and test operation.

In the above embodiment, the collet body 21 is fixedly mounted to the mounting plate 34 of the actuator 32 through the adapter plate 22 , and the battery cell casing is simulated by the collet body 21 . However, the present invention is not limited to this. In other embodiments according to the present invention, the collet body 21 may also be removably fixedly mounted to the mounting plate 34 of the actuator 32 without the use of an adapter plate. In other embodiments according to the invention, instead of using the collet body 21 to simulate the cell casing, the cell casing provided with the insulating material M may be attached to the collet body 21 or directly to the adapter board 22 and adjust the thermocouple settings accordingly.

In the above-described embodiment, the thermal insulation performance testing apparatus 1 includes the above-described chuck moving device 30 and gap adjusting device 40 . However, the present invention is not limited thereto, and in other modified examples according to the present invention, the thermal insulation performance testing apparatus may realize the adjustment of the test gap through other structures. For example, in one example, the thermal insulation performance testing equipment may adopt an elastic expansion and contraction structure to realize the adjustment of the testing gap.

In the above embodiment, the thickness of the collet body of the test collet 20 is equal to the thickness of the shell of the target product to simulate the temperature rise characteristic of the target product. However, the present invention is not limited thereto, and in other modified examples according to the present invention, the thickness of the collet body 21 may not be equal to the thickness of the shell of the target product, but by setting the thickness of the collet body to be the same as the thickness of the target product The thickness of the shell is proportional, and the temperature rise characteristic of the target product is inferred from the ratio between the thickness of the collet body and the thickness of the shell of the target product and the temperature rise characteristic of the collet body.

The above shows the thermal insulation performance testing apparatus and thermal insulation performance testing method according to the preferred embodiment of the present invention in conjunction with the thermal insulation material used between adjacent battery cells of the battery module of the electric vehicle. However, the present invention is not limited to this. The thermal insulation performance testing equipment and thermal insulation performance testing method according to the present invention can also be applied to thermal insulation performance testing in other fields, especially when the target product is a sheet-like component.

Herein, exemplary embodiments of the present invention have been described in detail, but it is to be understood that the present invention is not limited to the specific embodiments described and illustrated in detail above. Various modifications and variations can be made in the present invention by those skilled in the art without departing from the spirit and scope of the invention. All such modifications and variations fall within the scope of the present invention. Furthermore, all components described herein may be replaced by other technically equivalent components.

Claims (18)

1. An insulating property testing device (1) comprising:

a heat source device (50), the heat source device (50) being capable of warming to a target temperature; and

a test cartridge (20) to which a test sample to be tested is fixed to a first surface (213) of the test cartridge (20), the first surface (213) facing the heat source device (50), the first surface (213) of the test cartridge (20) being close to the heat source device (50) and a gap with the heat source device (50) being a test gap in a test position,

characterized in that the thermal insulation performance testing apparatus (1) further comprises a gap adjustment device (40), the gap adjustment device (40) being configured to adjust the test gap.

2. The insulating performance testing apparatus (1) according to claim 1, wherein the insulating performance testing apparatus (1) further comprises a cartridge moving device (30), and the cartridge moving device (30) is configured to move the test cartridge (20) towards the heat source device (50) to the testing position or away from the heat source device (50) from the testing position.

3. The insulating performance testing apparatus (1) according to claim 2, wherein the cartridge moving device (30) comprises an actuator (32) and a movable member (33), the actuator (32) being configured and adapted to move the movable member (33) towards or away from the heat source device (50), wherein the testing cartridge (20) is detachably fixed to the movable member (33).

4. The insulating performance testing apparatus (1) according to claim 3, wherein the test cartridge (20) is fixed to the cartridge moving device (30) via an adapter plate (22).

5. The insulating performance testing apparatus (1) of claim 3, wherein the gap adjustment device (40) comprises a sliding plate (42) and a micro-actuator (43), the actuator (32) being fixed on the sliding plate (42), the micro-actuator (43) being operable to move the sliding plate (42) towards or away from the heat source device (50).

6. The insulating performance testing apparatus (1) according to claim 5, wherein the gap adjusting device (40) further comprises a locking device (44), the locking device (44) being configured and adapted to lock the sliding panel (42) such that the position of the sliding panel (42) relative to the heat source device (50) is locked.

7. The insulating property testing device (1) according to claim 3, wherein the actuator (32) is any one of: cylinder, electric cylinder, hydraulic cylinder.

8. The insulating property testing apparatus (1) according to claim 1, wherein the test cartridge (20) is provided with a thermocouple (24), the thermocouple (24) being configured to measure the temperature at a fixed interface between the first surface (213) and the test sample.

9. The thermal insulation performance testing apparatus (1) according to claim 1, wherein the heat source device (50) comprises a heating plate (51) and an electric heater (52), the heat source device (50) being configured such that the electric heater (52) is capable of heating the heating plate (51) to the target temperature.

10. The thermal insulation performance testing apparatus (1) according to claim 9, wherein the thermal insulation performance testing apparatus (1) further comprises a controller configured to stop heating of the electric heater (52) when the heating plate (51) is heated to the target temperature.

11. The insulating property testing device (1) according to any one of claims 1 to 10, wherein the test sample is an insulating material (M) to be set onto a target product and the material of the test cartridge (20) is the same as the material of the casing of the target product.

12. The insulating property testing device (1) according to claim 11, wherein the target product is a battery cell of a battery module.

13. A method of testing thermal insulation performance, the method comprising:

setting a test position;

heating a heat source device (50) to a target temperature;

testing a first test sample to be tested with a first test gap, and recording the change of temperature at a first fixed interface between the first test sample and a first test chuck (20) fixed with the first test sample along with time, wherein the first fixed interface faces the heat source device (50), and the first test gap is a gap between the first fixed interface and the heat source device (50);

after the test of the first test sample is finished, a second test sample to be tested is tested in a second test gap, and the change of the temperature at a second fixed interface between the second test sample and a second test chuck fixed with the second test sample along with time is recorded, wherein the second fixed interface faces the heat source device (50), the second test gap is a gap between the second fixed interface and the heat source device (50), and the second test gap can be equal to or not equal to the first test gap.

14. The method of claim 13, wherein the settings of at least one of the following groups are different: (1) the first test sample and the second test sample; (2) the first test cartridge and the second test cartridge; (3) the first test gap and the second test gap.

15. The insulation performance test method according to claim 13 or 14, wherein the heat source device (50) comprises a heating plate (51) and an electric heater (52), the electric heater (52) being arranged to be able to heat the heating plate (51) to the target temperature, and the electric heater (52) stops heating when the heating plate (51) is heated to the target temperature.

16. The insulation performance test method according to claim 13 or 14, wherein the first test specimen and the second test specimen are insulation materials to be set on the respective target products, respectively, and the material of the first test cartridge (20) and the material of the second test cartridge are the same as the material of the casing of the respective target products.

17. The method of claim 13 or 14, wherein the testing of the first test specimen is terminated once the first test specimen is tested at the first test gap for a predetermined time and the temperature at the first fixed interface at that time is recorded, or the testing of the first test specimen is terminated once the temperature at the first fixed interface reaches a predetermined temperature and the length of time of the testing of the first test specimen is recorded;

ending the testing of the second test specimen once the second test specimen is tested at the second test gap for a predetermined time and recording the temperature at the second fixed interface at that time, or ending the testing of the second test specimen once the temperature at the second fixed interface reaches a predetermined temperature and recording the length of time the second test specimen is tested.

18. The insulation performance test method according to claim 13 or 14, which is carried out using the insulation performance test apparatus according to any one of claims 1 to 12.

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