Device for testing flame retardance and impact resistance of composite coating diaphragm

Abstract

The invention relates to the technical field of lithium ion batteries, in particular to a composite coating diaphragm flame-retardant and impact-resistant performance test device which comprises a test box, an electric sliding rail, a guide rod, a baffle and the like. Guide rods are symmetrically and fixedly connected to the outer walls of openings in the left side and the right side of the test box, and the baffles are slidably mounted on the two sides of the test box through the guide rods respectively. According to the invention, the movement of the connecting frame is accurately controlled through the rotation of the servo motor mechanism screw rod, so that the composite coating diaphragm in the clamping assembly can be subjected to an impact test of the impact test mechanism at a preset position, and the impact strength can be accurately controlled through the design of a wedge-shaped plate and an impact piece in the impact assembly; and the impact claw and the pricking needle on the impact piece can perform different types of impact tests on the diaphragm, and meanwhile, the impact tests of different weight classes can be realized by adjusting the number of the balancing weights, so that the impact resistance of the composite coating diaphragm can be accurately evaluated.

Description

Technical Field

[0001] The invention relates to the technical field of lithium ion batteries, in particular to a composite coating diaphragm flame retardant and impact resistance test device. Background Art

[0002] With the growing demand for new energy vehicles and consumer electronics, the diaphragm material industry, as an important component of lithium-ion batteries, has developed rapidly. In lithium-ion batteries, the diaphragm can isolate the positive and negative electrodes to prevent internal short circuits, and there are a large number of nano-scale micropores in the diaphragm, which can provide channels for the passage of ions in the electrolyte. The composite coating diaphragm usually refers to a special material used in lithium-ion batteries. It adds one or more layers of coating materials to the traditional polymer diaphragm to improve the performance of the diaphragm. This improvement can improve key performance indicators such as battery safety, stability and cycle life.

[0003] At present, due to the rapid development of new energy technologies such as electric vehicles and energy storage systems, the demand for high-performance and high-safety batteries is growing. The safety and performance of batteries depend to a large extent on the diaphragm materials inside them. Performance testing of composite coated diaphragms is a key link in ensuring safe, reliable and efficient operation of batteries. These tests can not only evaluate the performance of diaphragms under different conditions, but also provide important basis for battery design, production and application. Therefore, we designed a composite coating diaphragm flame retardant and impact resistance test device to achieve the impact resistance and flame retardant effect of composite coating diaphragms. Summary of the invention

[0004] In order to overcome the shortcomings of the existing performance test of composite coating membranes, that is, the test conditions are inconsistent with the actual use situation and the test structure is inaccurate, the present invention provides a composite coating membrane flame retardant and impact resistance test device.

[0005] Technical solution: A composite coating diaphragm flame retardant and impact resistance test device, comprising a test box, an electric slide rail, a guide rod, a baffle, a connecting frame, a screw, a servo motor, a clamping assembly, an impact test mechanism and a flame retardant test mechanism, the outer walls of the left and right openings of the test box are symmetrically fixed with guide rods, the baffles are slidably installed on both sides of the test box through the guide rods, a screw is rotatably installed on the front side wall of the test box through a bracket, the front and rear side walls of the test box are also provided with a servo motor, the output shaft of the servo motor is connected to the screw, the screw and the connecting frame are threadedly connected, the interior of the test box is symmetrically installed with electric slide rails, the inner wall of the test box is installed with a clamping assembly through the electric slide rail, the clamping assembly is used to clamp the composite coating diaphragm, the top of the inner wall of the test box is provided with an impact test mechanism, the impact test mechanism is used to perform an impact test on the composite coating diaphragm, the top of the inner wall of the test box is provided with a flame retardant test mechanism, the impact test mechanism is used to perform a flame retardant test on the composite coating diaphragm.

[0006] In addition, it is particularly preferred that the clamping assembly includes a sliding rod, a sliding block, a support plate, a pressure plate, a placement plate, a wedge-shaped push block, a spring I and a connecting rod, the front and rear sides of the inner wall of the test box are also symmetrically connected with sliding rods, the sliding rods are parallel to the electric slide rail, the sliding blocks are symmetrically installed on the sliders of the electric slide rail, the sliding blocks are slidably connected to the sliding rods corresponding to the same side, the opposite side of the sliding block is fixedly connected with a support plate, the sliding block is also rotatably mounted with a pressure plate, the clamping surfaces of the support plate and the pressure plate are both arc surfaces, a torsion spring is provided on the rotating shaft connecting the pressure plate and the sliding block, and the pressure plate is pressed under the action of the torsion spring It is in a vertical state with the sliding block, and a placement plate is detachably installed between the support plates on the front and rear sides, and the placement plate is used to place the composite coating diaphragm. Wedge-shaped push blocks are slidably installed on the sliding blocks, and the wedge-shaped push blocks are in contact with the pressure plate. A spring I is provided between the wedge-shaped push block and the sliding block, and connecting rods are symmetrically fixed between the baffles, and the connecting rods are respectively adapted to and aligned with the wedge-shaped push blocks, and the connecting rods are raised and lowered following the baffles, and the connecting rods are used to squeeze the wedge-shaped push blocks, and the wedge push blocks push the pressure plate cover to press on the support plate, so that the composite coating diaphragm can be stably pressed on the placement plate for testing.

[0007] In addition, it is particularly preferred that a sealing gasket is provided on the end surface of the baffle plate contacting the opening of the test box, and after the baffle plate covers the opening of the test box, the air tightness of the test box can be ensured.

[0008] In addition, it is particularly preferred that the impact test mechanism includes a mounting frame, an impact piece, a wedge plate and a toggle piece, the mounting frame is fixedly connected to the top of the inner wall of the test box, the impact piece is slidably mounted on the mounting frame, the impact piece includes an impact rod, an impact claw and a needle, the impact rod passes through the mounting frame, the impact end side of the impact rod is circumferentially provided with an impact claw, the impact claw can perform impact tests on different positions of the diaphragm, the bottom surface of the impact end of the impact rod is provided with a plurality of needles, the rod body of the impact piece is fixedly connected with a wedge plate, one side of the end of the wedge plate is an inclined surface, One side of the end of the wedge plate is a vertical plane, and the clamping assembly is provided with a toggle piece, which is used to squeeze and link the wedge plate so that the impact piece is lifted up under the drive of the wedge plate, and when the toggle piece is separated from the wedge plate, the impact piece falls and impacts the coated diaphragm on the placement plate under the action of its own gravity. At this time, the impact rod, impact claw and puncture needle on the impact piece will perform impact tests such as impact and puncture on different positions of the diaphragm, and the impact resistance of the composite coating diaphragm to different types can be judged by observing the dents and punctures at different positions on the placement plate.

[0009] In addition, it is particularly preferred that the toggle member includes a fixed plate, a toggle rod and a torsion spring, and the supporting plates at two locations are fixedly connected to one side of the impact member, a toggle rod is rotatably connected to the fixed plate, the toggle rod cannot rotate toward the supporting plate when connected to the fixed plate, and a torsion spring is provided between the rotating shaft of the toggle rod and the fixed plate, and when the toggle rod moves from right to left, the wedge plate can be pushed upward through the inclined surface, and when the toggle rod is reset and moved from left to right, the toggle rod is squeezed by the end plane of the wedge plate to overcome the elastic force of the torsion spring to rotate and avoid the wedge plate.

[0010] In addition, it is particularly preferred that the impact testing mechanism also includes a counterweight block, which is installed on the rod body of the impact rod located above the wedge plate, and the counterweight block is used to weight the impact member. The counterweight block can be selectively installed on the impact member so that the impact member can perform impact tests of different weights on the composite coating diaphragm.

[0011] In addition, it is particularly preferred that the flame retardant test mechanism includes a battery frame, a spring II, a push rod, an indicator light, a hook rod and an igniter, the bottom of the support plate is slidably connected to the battery frame through a slide groove, the battery frame is used to place the test battery, a spring II is provided between the support plate and the battery frame, push rods are symmetrically fixedly connected to the front and rear sides of the battery frame, an indicator light is installed on the upper side wall of the battery frame, the indicator light is electrically connected to the battery placed in the battery frame, the indicator light is used to indicate the status of the test battery, and the outer wall of the baffle on the right side is fixedly connected with hook rods with the same number as the push rods. The hook-shaped rod is matched with the push rod. The upward movement of the baffle will drive the hook-shaped rod to squeeze the push rod through the inclined surface, so that the battery frame can slide out synchronously from the bottom of the support plate, so that the test personnel can place the test battery. An igniter is installed on the right side of the top of the inner wall of the test box. The igniter is located directly above the placement plate. The igniter performs an ignition test on the composite coating diaphragm on the placement plate. Since the composite coating diaphragm is isolated between the flame and the test battery, the test battery in the battery frame can be judged whether it is working normally by observing the off state of the indicator light, thereby reflecting the flame retardant performance of the composite coating diaphragm.

[0012] In addition, it is particularly preferred that a smoke detector is also provided in the test box, and a smoke detector is installed on the top of the inner wall of the test box near the igniter, and the smoke detector is used to detect the smoke generated by the composite coating diaphragm in the flame retardant test, so that the test personnel can further evaluate the flame retardant properties of the composite coating diaphragm through the smoke properties.

[0013] In addition, it is particularly preferred that an exhaust assembly is provided on the left side of the top of the test box, and the exhaust assembly includes an exhaust chamber, a filter plate and an exhaust pipe. The left side of the top of the test box is connected to the exhaust chamber through an opening, a filter plate is installed inside the exhaust chamber, and the top of the exhaust chamber is connected to the exhaust pipe. The exhaust chamber can drain the smoke generated by the flame retardant test in the test box, and the smoke is filtered by the filter plate and then safely discharged from the exhaust pipe.

[0014] In addition, it is particularly preferred that an exhaust fan is also provided in the exhaust chamber, and the exhaust fan is used to draw the smoke in the test box into the exhaust chamber, thereby improving the exhaust efficiency of the smoke in the test box and the test efficiency of the composite coating membrane.

[0015] 1. The present invention uses the rotation of the lead screw of the servo motor to accurately control the movement of the connecting frame, so that the composite coating diaphragm in the clamping assembly can be subjected to the impact test of the impact testing mechanism at a preset position. The design of the wedge plate and the impact piece in the impact testing mechanism allows the impact force to be accurately controlled, and the impact claws and needles on the impact piece can perform different types of impact tests on the diaphragm. At the same time, by adjusting the number of counterweights, impact tests of different weight levels can be achieved, thereby accurately evaluating the impact resistance of the composite coating diaphragm.

[0016] 2. The present invention uses an igniter to directly apply flame to the composite coating membrane, thereby truly simulating the flame retardant conditions in the actual application environment, and can also effectively protect the test battery from the direct influence of the flame, ensuring the safety of the test, and using the state change of the indicator light to reflect the flame retardant properties of the composite coating membrane, so that the test results are intuitively visible, which is convenient for timely evaluation of the flame retardant effect of the coating membrane.

[0017] 3. The present invention can also effectively discharge the smoke generated in the flame retardant test by setting an exhaust component, and use a filter plate to remove harmful substances to ensure the safety of emissions. In addition, the smoke detector installed on the top of the inner wall of the test chamber can monitor the harmful gas components in the smoke in real time, helping researchers to evaluate the flame retardant properties of the composite coating diaphragm and provide a basis for subsequent product improvements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 The figure is a connection diagram of the test box, the clamping assembly and the flame retardant test mechanism of the present invention.

[0020] Figure 3 It is a three-dimensional structural cross-sectional view of the test box of the present invention.

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the clamping assembly and the flame retardant testing mechanism of the present invention.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the impact testing mechanism of the present invention.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping assembly and the toggle member of the present invention.

[0024] Figure 7 It is a three-dimensional structural cross-sectional view of the exhaust component of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the specific components of the impact piece of the present invention.

[0026] In the figure: 1. test box, 101. electric slide rail, 2. guide rod, 3. baffle, 4. connecting frame, 5. screw rod, 6. servo motor, 7. clamping assembly, 701. sliding rod, 702. sliding block, 703. support plate, 704. pressure plate, 705. placement plate, 706. wedge push block, 707. spring I, 708. connecting rod, 8. impact test mechanism, 801. installation frame, 802. impact piece, 8021. impact rod, 8022. impact claw, 8023. 023. needle, 803. wedge plate, 804. toggle member, 8041. fixing plate, 8042. toggle rod, 8043. torsion spring, 805. counterweight, 9. flame retardant test mechanism, 901. battery frame, 902. spring II, 903. push rod, 904. indicator light, 905. hook rod, 906. igniter, 10. smoke detector, 11. exhaust assembly, 111. exhaust chamber, 112. exhaust pipe, 113. filter plate, 12. exhaust fan. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0028] Example 1: A composite coating membrane flame retardant and impact resistance test device, such as Figure 1-Figure 3 As shown, it includes a test box 1, an electric slide rail 101, a guide rod 2, a baffle 3, a connecting frame 4, a screw 5, a servo motor 6, a clamping assembly 7, an impact test mechanism 8 and a flame retardant test mechanism 9. The outer walls of the openings on the left and right sides of the test box 1 are symmetrically fixed with guide rods 2. The baffles 3 are slidably installed on both sides of the test box 1 through the guide rods 2. The end surfaces of the baffles 3 contacting the opening of the test box 1 are provided with sealing gaskets. After the baffles 3 cover the opening of the test box 1, the air tightness of the test box 1 can be ensured. The screw 5 is rotatably installed on the front side wall of the test box 1 through a bracket. The test box The front and rear side walls of 1 are also provided with a servo motor 6, the output shaft of the servo motor 6 is connected to the screw rod 5, the screw rod 5 is threadedly connected to the connecting frame 4, the interior of the test box 1 is symmetrically installed with an electric slide rail 101, the inner wall of the test box 1 is installed with a clamping assembly 7 through the electric slide rail 101, the clamping assembly 7 is used to clamp the composite coating diaphragm, the top of the inner wall of the test box 1 is installed with an impact testing mechanism 8, the impact testing mechanism 8 is used to perform an impact test on the composite coating diaphragm, the top of the inner wall of the test box 1 is provided with a flame retardant testing mechanism 9, the impact testing mechanism 8 is used to perform a flame retardant test on the composite coating diaphragm.

[0029] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the clamping assembly 7 includes a sliding rod 701, a sliding block 702, a support plate 703, a pressure plate 704, a placement plate 705, a wedge-shaped push block 706, a spring I 707 and a connecting rod 708. The front and rear sides of the inner wall of the test box 1 are also symmetrically connected with the sliding rod 701. The sliding rod 701 is parallel to the electric slide rail 101. The sliding block 702 is symmetrically installed on the slider of the electric slide rail 101. The sliding block 702 is slidably connected to the sliding rod 701 corresponding to the same side. The opposite side of the sliding block 702 is fixedly connected with a support plate 703. A pressure plate 704 is also rotatably installed on the sliding block 702. The clamping surfaces of the support plate 703 and the pressure plate 704 are both cambered surfaces. A torsion spring 8043 is provided on the rotating shaft connecting the pressure plate 704 and the sliding block 702. The pressure plate 704 is arranged on the torsion spring 804 3 is in a vertical state with the sliding block 702, a placement plate 705 is detachably installed between the support plates 703 on the front and rear sides, the placement plate 705 is used to place the composite coating diaphragm, wedge-shaped push blocks 706 are slidably installed on the sliding blocks 702, the wedge-shaped push blocks 706 are in contact with the pressure plate 704, a spring I 707 is provided between the wedge-shaped push blocks 706 and the sliding block 702, connecting rods 708 are symmetrically fixed between the baffles 3, the connecting rods 708 are respectively adapted to and aligned with the wedge-shaped push blocks 706, the connecting rods 708 are lifted and lowered following the baffles 3, the connecting rods 708 are used to squeeze the wedge-shaped push blocks 706, so that the wedge-shaped push blocks 706 push the pressure plate 704 to cover the support plate 703, so that the composite coating diaphragm can be stably pressed on the placement plate 705 for testing.

[0030] like Figure 3 , Figure 5 and Figure 8As shown, the impact test mechanism 8 includes a mounting frame 801, an impact member 802, a wedge plate 803 and a toggle member 804. The mounting frame 801 is fixedly connected to the top of the inner wall of the test box 1. The impact member 802 is slidably mounted on the mounting frame 801. The impact member 802 includes an impact rod 8021, an impact claw 8022 and a puncture needle 8023. The impact rod 8021 runs through the mounting frame 801. The impact end side of the impact rod 8021 is circumferentially provided with an impact claw 8022. The impact claw 8022 is used to perform impact tests on different positions of the diaphragm. The bottom surface of the impact end of the impact rod 8021 is provided with a plurality of puncture needles 8023. The puncture needles 8023 are used to perform impact tests on the diaphragm. In the puncture impact test, a wedge plate 803 is fixedly connected to the rod body of the impact rod 8021, one side of the end of the wedge plate 803 is an inclined surface, and one side of the end of the wedge plate 803 is a vertical plane. A toggle member 804 is provided on the clamping assembly 7, and the toggle member 804 is used to squeeze and link the wedge plate 803, so that the impact member 802 is lifted under the drive of the wedge plate 803, and when the toggle member 804 is separated from the wedge plate 803, the impact member 802 falls and impacts the coated diaphragm on the placement plate 705 under the action of its own gravity. The impact resistance of the composite coating diaphragm to different types can be judged by observing the dents and punctures at different positions of the placement plate 705.

[0031] like Figure 5 , Figure 6 and Figure 8 As shown, the toggle member 804 includes a fixed plate 8041, a toggle rod 8042 and a torsion spring 8043. The two sides of the support plate 703 close to the impact member 802 are fixedly connected with a fixed plate 8041. The fixed plate 8041 is rotatably connected with a toggle rod 8042. The toggle rod 8042 cannot rotate toward the support plate 703 when connected to the fixed plate 8041. A torsion spring 8043 is provided between the rotating shaft of the toggle rod 8042 and the fixed plate 8041. When the toggle rod 8042 moves from right to left, the inclined surface can push the wedge plate 803 upward. When the toggle rod 8042 is reset and moves from left to right, the toggle rod 8042 is squeezed by the end plane of the wedge plate 803, overcomes the elastic force of the torsion spring 8043, rotates and avoids the wedge plate 803; the impact test mechanism 8 also includes a counterweight block 805, which is installed on the rod body of the impact rod 8021 located above the wedge plate 803, and the counterweight block 805 is used to weight the impact member 802. The counterweight block 805 can be selectively installed on the impact member 802, so that the impact member 802 can perform impact tests of different weights on the composite coating diaphragm.

[0032] When the composite coating diaphragm is tested by using the device, the composite coating diaphragm is first placed on the placement plate 705 and the servo motor 6 is activated. The servo motor 6 drives the screw rod 5 to rotate through the output shaft. The rotating screw rod 5 drives the connecting frame 4 to move downward through the thread. The connecting frame 4 will synchronously drive the baffles 3 on both sides to move downward under the guidance of the guide rod 2 and drive the connecting rod 708 to move downward. When the connecting rod 708 moves downward and squeezes on the inclined surface of the corresponding wedge-shaped push block 706, the squeezed wedge-shaped push block 706 overcomes the elastic force of the spring I 707 and squeezes on the corresponding pressure plate 704, so that the pressure plate 704 overcomes the elastic force of the torsion spring 8043 and flips over and covers the support plate 703, and the support plate 703 and the pressure plate The clamping arc surface of 704 can contact and fit the diaphragm, so that the composite coating diaphragm on the placement plate 705 is firmly limited and pressed by the pressing plate 704, until the downward baffle 3 is sealed and blocked at the opening of the test box 1, and the servo motor 6 is turned off. When an impact test is required, the electric slide rail 101 is enabled, and the electric slide rails 101 on both sides will synchronously drive the sliding block 702, the support plate 703 and the placement plate 705 to move as a whole. In the process of the composite coating diaphragm clamped on the placement plate 705 moving from right to left, the toggle rod 8042 on the support plate 703 will be pressed on the wedge plate 803, and the toggle rod 8042 will be pressed on the inclined surface of the wedge plate 803, so that the wedge plate 803 will drive the impact piece 80 2 and the counterweight block 805 assembled thereon move upward synchronously. When the toggle member 804 is released from the squeezing of the wedge plate 803, the impact member 802, under the action of the counterweight block 805 thereon and its own gravity, directly slides downward and hammers on the composite coating diaphragm on the placement plate 705. At this time, the impact claw 8022 will perform an impact test on different positions of the diaphragm, and the puncture needle 8023 on the impact rod 8021 can perform a puncture test on the diaphragm, thereby detecting the impact resistance of different positions on the composite coating diaphragm for various types. Since the clamping surfaces of the support plate 703 and the pressure plate 704 are both designed as arc surfaces, the pressure applied to the composite coating diaphragm can be evenly dispersed during clamping, avoiding the traditional plane clamping. The pressure concentration points that may appear when the composite coating diaphragm is moved are reduced, thereby reducing the risk of damage to the diaphragm material due to excessive local force. When the electric slide rail 101 synchronously drives the composite coating diaphragm to reset from left to right, the toggle rod 8042 cannot push the wedge plate 803. Under the squeezing of the end plane of the wedge plate 803, the toggle rod 8042 overcomes the elastic force of the torsion spring 8043 to rotate and avoid the wedge plate 803 to complete the reset. In addition, by adjusting the number of counterweights 805 assembled on the impact piece 802 in advance, the impact force of the impact piece 802 on the composite coating diaphragm is changed, thereby facilitating the measurement of the impact resistance of the composite coating diaphragm under different impact forces.

[0033] Embodiment 2: Based on embodiment 1, Figure 1-Figure 4As shown, the flame retardant test mechanism 9 includes a battery frame 901, a spring II 902, a push rod 903, an indicator light 904, a hook rod 905 and an igniter 906. The bottom of the support plate 703 is slidably connected to the battery frame 901 through a slide groove. The battery frame 901 is used to place test batteries. A spring II 902 is provided between the support plate 703 and the battery frame 901. Push rods 903 are symmetrically fixed to the front and rear sides of the battery frame 901. An indicator light 904 is installed on the upper side wall of the battery frame 901. The indicator light 904 is electrically connected to the battery placed in the battery frame 901. The indicator light 904 is used to indicate the state of the test battery. The outer wall of the baffle 3 on the right side is fixed with the same number of push rods 903. The hook-shaped rod 905 is matched with the push rod 903. The upward movement of the baffle 3 will drive the hook-shaped rod 905 to squeeze the push rod 903 through the inclined surface, so that the battery frame 901 can slide out from the bottom of the support plate 703 synchronously, so that the test personnel can place the test battery. An igniter 906 is installed on the right side of the top of the inner wall of the test box 1. The igniter 906 is located directly above the placement plate 705. The igniter 906 performs an ignition test on the composite coating diaphragm on the placement plate 705. Since the composite coating diaphragm is isolated between the flame and the test battery, the test battery in the battery frame 901 is judged to be working normally by observing the off state of the indicator light 904, thereby reflecting the flame retardant performance of the composite coating diaphragm.

[0034] like Figure 7 As shown, a smoke detector 10 is also provided in the test box 1. The smoke detector 10 is installed on the top of the inner wall of the test box 1 near the igniter 906. The smoke detector 10 is used to detect the smoke generated by the composite coating membrane in the flame retardant test, so that the test personnel can further evaluate the flame retardant performance of the composite coating membrane through the smoke properties.

[0035] like Figure 1 and Figure 7 As shown, an exhaust assembly 11 is arranged on the left side of the top of the test box 1, and the exhaust assembly 11 includes an exhaust chamber 111, a filter plate 113 and an exhaust pipe 112. The left side of the top of the test box 1 is connected to the exhaust chamber 111 through an opening, and a filter plate 113 is installed inside the exhaust chamber 111. The top of the exhaust chamber 111 is connected to the exhaust pipe 112. The exhaust chamber 111 can lead out the smoke generated by the flame retardant test in the test box 1, and then the smoke is filtered by the filter plate 113 and discharged safely from the exhaust pipe 112; an exhaust fan 12 is also arranged in the exhaust chamber 111, and the exhaust fan 12 is used to draw the smoke in the test box 1 into the exhaust chamber 111, so as to improve the exhaust efficiency of the smoke in the test box 1 and the test efficiency of the composite coating diaphragm.

[0036] When it is necessary to perform a flame retardant test on the composite coating diaphragm, the igniter 906 is activated in the test box 1 behind the sealed closed baffle 3, so that the igniter 906 generates a flame, and the flame in the igniter 906 can be sprayed to the composite coating diaphragm placed on the placement plate 705 through the flamethrower, so that the composite coating diaphragm can be flame retardant tested in the sealed test box 1. When the flame retardant performance of the tested composite coating diaphragm is good, the heat generated by the flame of the composite coating diaphragm will be difficult to quickly transfer to the test battery in the battery frame 901 through the placement plate 705, so that the test battery works normally and the indicator light 904 remains on. When the flame retardant performance of the tested composite coating diaphragm is poor, the heat generated by the flame of the composite coating diaphragm will quickly transfer to the test battery in the battery frame 901 through the placement plate 705, so that the test battery works abnormally due to heat and the indicator light 904 remains off, thereby judging the flame retardant performance of the composite coating diaphragm, and the smoke detector 10 is activated when the composite coating diaphragm is subjected to the ignition flame retardant test. The smoke detector 10 will detect the smoke components generated by the composite coating membrane in the flame retardant test, and transmit the detected data to an external display terminal through an electrical signal, so that the test personnel can further evaluate the flame retardant performance of the composite coating membrane by analyzing the smoke components or smoke density. At the same time, when the smoke generated by the composite coating membrane fills the test box 1, the exhaust fan 12 is enabled so that the exhaust fan 12 can draw the smoke in the test box 1 into the exhaust chamber 111, and the filter plate 113 is used to adsorb and filter the harmful substances, particles and odors of the smoke, and then the smoke generated in the flame retardant test is safely discharged through the exhaust pipe 112, so that the subsequent test personnel can collect and process it safely. After the flame retardant test of the composite coating membrane is completed, when the baffle 3 is opened from the side of the test box 1, the baffle 3 will drive the configuration rod to squeeze the push rod 903 upward, so that the push rod 903 overcomes the elastic force of the spring II 902 and pulls out the battery frame 901 from the bottom of the support plate 703, thereby facilitating the test personnel to take and place the test battery.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A composite coating membrane flame retardant and impact resistance test device, comprising a test box (1), wherein the test box (1) is a test container for the composite coating membrane, and is characterized in that: The test box (1) further comprises a guide rod (2), a baffle (3), a connecting frame (4), a screw rod (5), a servo motor (6), a clamping assembly (7), an impact test mechanism (8) and a flame retardant test mechanism (9). The outer walls of the left and right openings of the test box (1) are symmetrically fixed with guide rods (2). The baffle (3) is slidably mounted on both sides of the test box (1) through the guide rods (2). A screw rod (5) is rotatably mounted on the front side wall of the test box (1) through a bracket. The front and rear side walls of the test box (1) are also provided with a servo motor (6). The output shaft of the servo motor (6) and the screw rod (5) are connected to each other. ) are connected, the screw rod (5) and the connecting frame (4) are threadedly connected, the interior of the test box (1) is symmetrically installed with an electric slide rail (101), the inner wall of the test box (1) is installed with a clamping assembly (7) through the electric slide rail (101), the clamping assembly (7) is used to clamp the composite coating diaphragm, the top of the inner wall of the test box (1) is installed with an impact testing mechanism (8), the impact testing mechanism (8) is used to perform an impact test on the composite coating diaphragm, and the top of the inner wall of the test box (1) is provided with a flame retardant testing mechanism (9), the impact testing mechanism (8) is used to perform a flame retardant test on the composite coating diaphragm.

2. A composite coating membrane flame retardant and impact resistance test device as claimed in claim 1, characterized in that: The clamping assembly (7) includes a sliding rod (701), a sliding block (702), a support plate (703), a pressure plate (704), a placement plate (705), a wedge-shaped push block (706), a spring I (707) and a connecting rod (708). The front and rear sides of the inner wall of the test box (1) are also symmetrically connected with the sliding rod (701). The sliding rod (701) is parallel to the electric slide rail (101). The sliding block (702) is symmetrically installed on the slider of the electric slide rail (101). The sliding block (702) is slidably connected to the sliding rod (701) corresponding to the same side. The opposite side of the sliding block (702) is fixedly connected with a support plate (703). The sliding block (702) is also rotatably installed with a pressure plate (704). The clamping surfaces of the support plate (703) and the pressure plate (704) are both arc surfaces, a torsion spring (8043) is provided on the rotating shaft connecting the pressure plate (704) and the sliding block (702), a placement plate (705) is detachably installed between the front and rear sides of the support plates (703), the placement plate (705) is used to place the composite coating diaphragm, a wedge-shaped push block (706) is slidably installed on the sliding block (702), the wedge-shaped push block (706) is in contact with the pressure plate (704), a spring I (707) is provided between the wedge-shaped push block (706) and the sliding block (702), and connecting rods (708) are symmetrically fixed between the baffles (3), and the connecting rods (708) are respectively adapted to and aligned with the wedge-shaped push blocks (706).

3. A composite coating membrane flame retardant and impact resistance test device as claimed in claim 2, characterized in that: Sealing gaskets are provided on the end surfaces of the baffles (3) contacting the opening of the test box (1).

4. A composite coating membrane flame retardant and impact resistance test device as claimed in claim 3, characterized in that: The impact testing mechanism (8) comprises a mounting frame (801), an impact piece (802), a wedge plate (803) and a toggle piece (804); the mounting frame (801) is fixedly connected to the top of the inner wall of the test box (1); the impact piece (802) is slidably mounted on the mounting frame (801); the impact piece (802) comprises an impact rod (8021), an impact claw (8022) and a puncture needle (8023); the impact rod (8021) passes through the mounting frame (801); the impact claw (8022) and a puncture needle (8023) are An impact claw (8022) is circumferentially arranged on the side surface of the impact end of the rod (8021), a needle (8023) is arranged on the bottom surface of the impact end of the impact rod (8021), a wedge plate (803) is fixedly connected to the rod body of the impact rod (8021), one side of the end of the wedge plate (803) is an inclined surface, one side of the end of the wedge plate (803) is a vertical plane, and a toggle member (804) is arranged on the clamping assembly (7), and the toggle member (804) is used to squeeze and link the wedge plate (803).

5. A composite coating membrane flame retardant and impact resistance test device as claimed in claim 4, characterized in that: The toggle member (804) comprises a fixed plate (8041), a toggle rod (8042) and a torsion spring (8043); the two support plates (703) are fixedly connected to one side close to the impact member (802); the fixed plate (8041) is rotatably connected to a toggle rod (8042); the toggle rod (8042) cannot be rotated toward the support plate (703) on the fixed plate (8041); and a torsion spring (8043) is provided between the rotating shaft of the toggle rod (8042) and the fixed plate (8041).

6. A composite coating membrane flame retardant and impact resistance test device as claimed in claim 5, characterized in that: The impact testing mechanism (8) further comprises a counterweight block (805), wherein the counterweight block (805) is mounted on the rod body of the impact rod (8021).

7. A composite coating membrane flame retardant and impact resistance test device as claimed in claim 6, characterized in that: The flame retardant test mechanism (9) comprises a battery frame (901), a spring II (902), a push rod (903), an indicator light (904), a hook rod (905) and an igniter (906). The bottom of the support plate (703) is slidably connected to the battery frame (901) via a slide groove. The battery frame (901) is used to place a test battery. A spring II (902) is provided between the support plate (703) and the battery frame (901). The battery frame (901) Push rods (903) are symmetrically fixedly connected to the front and rear sides of the battery frame (901); an indicator light (904) is installed on the upper side wall of the battery frame (901); the indicator light (904) is electrically connected to the battery placed in the battery frame (901); the indicator light (904) is used to indicate the state of the test battery; the outer wall of the baffle (3) on the right side is fixedly connected to hook-shaped rods (905) with the same number as the push rods (903); the hook-shaped rods (905) are adapted to the push rods (903).

8. A composite coating membrane flame retardant and impact resistance test device as claimed in claim 7, characterized in that: A smoke detector (10) is also provided in the test box (1), and the smoke detector (10) is installed at the top of the inner wall of the test box (1) near the igniter (906).

9. A composite coating membrane flame retardant and impact resistance test device as claimed in claim 8, characterized in that: An exhaust assembly (11) is arranged on the left side of the top of the test box (1), and the exhaust assembly (11) comprises an exhaust chamber (111), a filter plate (113) and an exhaust pipe (112). The left side of the top of the test box (1) is connected to the exhaust chamber (111) through an opening, a filter plate (113) is installed inside the exhaust chamber (111), and the top of the exhaust chamber (111) is connected to the exhaust pipe (112).

10. A composite coating membrane flame retardant and impact resistance test device as claimed in claim 9, characterized in that: An exhaust fan (12) is also provided in the exhaust chamber (111).

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