A testing device for localized heating of high-temperature resistant heat insulation sheets for power batteries

Abstract

This invention relates to the field of testing equipment and provides a local heating testing device for high-temperature resistant heat insulation sheets used in power batteries. The device includes a base plate, with a set of support frames on both the left and right sides of the base plate. A positioning frame is located in the middle of each of the two sets of support frames. Detachable auxiliary frames are located at both ends of the positioning frame, and the positioning frame and auxiliary frames are rotatably positioned in the middle of the support frames. A straight rod is located at the center of the top of the base plate, with both ends of the straight rod fixedly connected to the top surface of the base plate via bearings. In use, the heat insulation sheet to be processed is placed into the assembly slot, and then the irradiation stage heats the heat insulation sheet, thus subjecting it to both bending and heating conditions. After the heat insulation sheet is removed and cooled, the operator can observe its resilience under these conditions.

Description

Technical Field

[0001] This invention belongs to the field of testing equipment, and specifically relates to a testing device for local heating of high-temperature heat-resistant insulation sheets for power batteries. Background Technology

[0002] With the development of industrial technology, modern testing equipment technology has become more and more sophisticated. Battery heat insulation pads are made of pre-oxidized fiber or other types of aerogel composite materials as the core, and polymer materials are hot-pressed or coated to form a composite. They have excellent heat insulation and buffering functions and are mainly used for thermal protection between power lithium battery cells to prevent thermal runaway of the cells.

[0003] Patent CN118189501A discloses a testing device and method for high-temperature resistant heat insulation sheets for power batteries, belonging to the field of battery heat insulation sheet testing technology. It includes a main module and an automatic feeding and cooling module. The main module includes a mounting frame, with a double-sided high-temperature testing component on the top of the mounting frame. The double-sided high-temperature testing component has two heating plates. The automatic feeding and cooling module includes a steering column rotatably connected between the two sides of the inner wall of a steering column. Four first U-shaped plates are fixedly connected at equal intervals on the outer surface of the steering column in a ring shape. Each of the four first U-shaped plates has a first U-shaped limiting groove inside. Through the arrangement of the steering column, automatic clamping component, ring plate, ring track groove, drive component, automatic cooling component, and separating arrangement component, this equipment can automatically feed and cool the heat insulation sheet after heating testing, eliminating the need for manual feeding and preventing burns.

[0004] The device has several drawbacks. First, the heating method for the battery heat shield is relatively fixed, making it prone to bending under impact. Furthermore, the battery surface temperature is high during locomotive operation, placing the heat shield in a high-temperature environment upon impact. This necessitates testing whether the heat shield can spring back to its original flat state under both impact and high-temperature conditions. Second, the heat shield may bend under localized heating, which can put pressure on adjacent batteries and cause physical damage. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a local heating testing device for high-temperature resistant heat insulation sheets used in power batteries. In use, the heat insulation sheet to be processed is placed into the assembly slot. A stepper motor drives two conveyor wheels to rotate via a horizontal shaft. During operation, a conveyor belt on the outer side of the conveyor wheels pushes the heat insulation sheet forward using a push rod on its outer wall. When the heat insulation sheet contacts the bottom arc surface of the arc-shaped frame, its edge is compressed and bent by the arc surface. Simultaneously, an irradiation table heats the heat insulation sheet, thus achieving both bending and heating conditions. After the heat insulation sheet is removed and cooled, the operator can observe its resilience under these conditions, thereby solving the problems mentioned in the background art.

[0006] To solve the above problems, the present invention provides the following technical solution: a local heating detection device for high-temperature resistant heat insulation sheets for power batteries, comprising a base plate, a set of support frames on both the left and right sides of the base plate, a positioning frame in the middle of both sets of support frames, and detachable auxiliary frames at both ends of the positioning frame, the positioning frame and the auxiliary frames being rotatably mounted in the middle of the support frames; a straight rod is provided at the middle position of the top of the base plate, the two ends of the straight rod being fixedly connected to the top surface of the base plate through a shaft seat; the bottom of the positioning frame and the auxiliary frame are provided with an arc-shaped frame detachably mounted on the side wall shell, the arc surface at the bottom of the arc-shaped frame having a partial annular array of several steering steel balls, the inner side wall at the bottom of the auxiliary frame having a linear array of lubricating steel balls, the lowest part of the arc surface of the arc-shaped frame being lower than the axial height of the straight rod; battery heat insulation sheet pushing assemblies are also provided on both sides of the straight rod, and a light heating adjustment mechanism is provided above the base plate.

[0007] In use, the battery heat shield to be processed is placed into the assembly slot. The battery heat shield pushing component pushes the workpiece forward. When the battery heat shield contacts the bottom arc surface of the arc frame, the edge of the battery heat shield is pressed by the bottom arc surface of the arc frame and becomes bent. At the same time, the irradiation table irradiates and heats the battery heat shield. Thus, the battery heat shield has the dual conditions of bending and heating. When the battery heat shield comes out and cools down, the staff can observe the resilience of the battery heat shield under the dual conditions of bending and heating.

[0008] Furthermore, the battery heat insulation sheet propulsion assembly includes two conveyor shaft seats arranged on the front and rear side walls of the base plate. A horizontal shaft is rotatably arranged on one side of the conveyor shaft seat. The front horizontal shaft is connected to the output shaft of the stepper motor. Two conveyor wheels are fixedly installed on the horizontal shaft. The front and rear conveyor wheels are connected by two conveyor belts. Two push rods are arranged on the side wall of the conveyor belts.

[0009] In use, the stepper motor drives two conveyor wheels to rotate via a horizontal shaft. As the conveyor belt on the outer side of the conveyor wheels rotates, the push rod on the outer side wall of the conveyor belt pushes the battery heat shield forward.

[0010] Furthermore, two fixing bolt heads are provided on the side wall of the conveyor belt, and a threaded opening is provided at the bottom of the push rod, with the threaded opening at the bottom of the push rod connected to the threaded head.

[0011] When using the push rod, if it needs to be changed to a different length or is damaged and needs repair, simply rotate and unscrew the push rod to replace it with a new one.

[0012] Furthermore, the end of the support frame is provided with a square hole, and a square pin is movably inserted inside the square hole. A short tube is provided on the side wall of the auxiliary frame opposite to the positioning frame. A docking square hole is provided inside the short tube. The square hole on the side wall of the support frame and the docking square hole inside the short tube are connected by a square pin. Both the positioning frame and the auxiliary frame are provided with through slots at the top.

[0013] When in use, after pulling out the square pin, the positioning frame and auxiliary frame can be rotated 90 degrees to lay flat. After the through slot is laid flat, the straight rod can be removed. The staff can then insert the battery heat shield into the through slot. The battery heat shield under the light can be heated, and the staff can observe the bending of different parts of the battery after heating.

[0014] Furthermore, a linear array of steel balls is rotatably arranged on both inner walls of the through slot, and the gap between the steel balls is greater than the thickness of the heat insulation sheet of the battery to be tested.

[0015] During use, the steel balls on the two inner walls of the through slot reduce the friction of the battery heat shield.

[0016] Furthermore, the light heating adjustment mechanism includes an irradiation platform fixedly installed above the base plate. A heating lamp device is installed inside the irradiation platform. Cantilever beams are installed on both the left and right sides of the base plate. A positioning motor is fixedly installed at the top of the cantilever beams. Three bifurcated brackets with a mutual deviation of 120 degrees are provided at the end of the rotating shaft of the positioning motor. A light shield is provided at the end of the bifurcated brackets. The heights of the bifurcated brackets and light shields on the left and right sides are not the same. The height of the left bifurcated bracket and light shield is greater than that of the right bifurcated bracket and light shield.

[0017] During use, the two positioning motors drive the forked frame and the light shield to rotate. The light shield can take turns reaching the bottom of the irradiation table. The light shield can block light individually or two light shields can overlap to block light, which can create a situation where light can pass through in a localized manner. The battery heat shield under the light can be locally heated.

[0018] Furthermore, the light-shielding plate has three types of light-transmitting holes at its center, and the shapes of the three types of light-transmitting holes are circular, rectangular and triangular, respectively.

[0019] When in use, the three types of light-transmitting holes in the left and right sets can overlap each other, which allows light to pass through light control of different shapes, thereby simulating heating areas of different shapes, and allowing staff to observe the bending of different local heating areas.

[0020] Compared with the prior art, the embodiments of this application have the following main advantages:

[0021] Firstly, when using this device, the battery heat insulation sheet to be processed is placed into the assembly slot. The stepper motor drives two conveyor wheels to rotate via a horizontal shaft. During the operation of the conveyor belt on the outer side of the conveyor wheels, the push rod on the outer wall of the conveyor belt pushes the battery heat insulation sheet forward. When the battery heat insulation sheet contacts the bottom arc surface of the arc frame, the edge of the battery heat insulation sheet is pressed by the bottom arc surface of the arc frame and becomes bent. At the same time, the irradiation table irradiates and heats the battery heat insulation sheet. Thus, the battery heat insulation sheet has both bending and heating conditions. When the battery heat insulation sheet comes out and cools down, the staff can observe the resilience of the battery heat insulation sheet under the dual conditions of bending and heating.

[0022] Secondly, after pulling out the square pin, the positioning frame and auxiliary frame can be rotated 90 degrees to lie flat. After the through slot is flattened, the straight rod can be removed, and the staff can put the battery heat shield into the through slot. At the same time, the two positioning motors drive the forked frame and the light shield to rotate. The light shield can take turns reaching the bottom of the irradiation table. The light shield can block light individually, or two light shields can overlap to block light. This can create a situation of local light transmission. The battery heat shield under the light can be locally heated, and the staff can observe the bending of different parts of the battery heat shield after heating. Attached Figure Description

[0023] Figure 1 This is a frontal view of the present invention.

[0024] Figure 2 This is a schematic diagram of the positioning frame of the present invention.

[0025] Figure 3 This is a schematic diagram of the second form of the positioning frame of the present invention.

[0026] Figure 4 For the present invention Figure 2 A magnified view of part A.

[0027] Figure 5 For the present invention Figure 3A magnified view of part B.

[0028] Figure 6 This is a schematic diagram of the arc-shaped frame of the present invention.

[0029] Figure 7 This is a schematic diagram of the through-slot of the present invention.

[0030] Figure 8 This is a schematic diagram of the irradiation stage of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] Base plate 1, support frame 101, square pin rod 102, straight rod 103, irradiation table 2, cantilever beam frame 201, positioning motor 202, fork frame 203, light shield 204, positioning frame 3, auxiliary frame 301, short pipe 302, lubricating steel ball 303, arc frame 4, steering steel ball 401, assembly slot 402, stepper motor 5, horizontal shaft 501, conveyor wheel 502, conveyor belt 503, push rod 504, through slot 6. Detailed Implementation

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] This invention provides a device for detecting localized heating of high-temperature resistant heat insulation sheets for power batteries, such as... Figure 1-8As shown, the system includes a base plate 1. A set of support frames 101 is provided on both the left and right sides of the base plate 1. A positioning frame 3 is provided in the middle of each of the two sets of support frames 101. Detachable auxiliary frames 301 are provided at both the front and rear ends of the positioning frame 3. The positioning frame 3 and the auxiliary frames 301 are rotatably positioned in the middle of the support frames 101. A straight rod 103 is provided at the middle position of the top of the base plate 1. The two ends of the straight rod 103 are fixedly connected to the top surface of the base plate 1 through bearing seats. Assembly slots 402 are provided at the bottom of both the positioning frame 3 and the auxiliary frames 301. The assembly slot 402 and the vertical surface form an inward 15-degree angle. An arc-shaped frame 4 is detachably installed on the upper shell of the side wall of the assembly slot 402. Several steering steel balls 401 are arranged in a partial annular array on the arc surface at the bottom of the arc frame 4. A linear array of lubricating steel balls 303 is arranged on the inner side wall of the assembly slot 402 at the bottom of the auxiliary frame 301. The height of the lowest part of the arc surface of the arc frame 4 is lower than the axial height of the straight rod 103. Battery heat insulation sheet propulsion assemblies are also arranged on both sides of the straight rod 103. A light heating adjustment mechanism is arranged above the base plate 1.

[0036] In this embodiment, the battery heat insulation sheet to be processed is placed into the assembly slot 402. The battery heat insulation sheet pushing assembly pushes the workpiece forward. When the battery heat insulation sheet contacts the bottom arc surface of the arc frame 4, the edge of the battery heat insulation sheet is pressed by the bottom arc surface of the arc frame 4 and becomes bent. At the same time, the irradiation table 2 irradiates and heats the battery heat insulation sheet. Thus, the battery heat insulation sheet has both bending and heating conditions. When the battery heat insulation sheet comes out and cools down, the staff can observe the resilience of the battery heat insulation sheet under the dual conditions of bending and heating.

[0037] In further embodiments of the present invention, such as Figure 1-5 As shown, the battery heat insulation sheet propulsion assembly includes two conveying shaft seats arranged on the front and rear side walls of the base plate 1. A horizontal shaft 501 is rotatably arranged on one side of the conveying shaft seat. The front horizontal shaft 501 is connected to the output shaft of the stepper motor 5. Two conveying wheels 502 are fixedly installed on the horizontal shaft 501. The front and rear conveying wheels 502 are connected by two conveyor belts 503. Two push rods 504 are arranged on the side wall of the conveyor belts 503.

[0038] In this embodiment, the stepper motor 5 drives the two conveyor wheels 502 to rotate via the horizontal shaft 501. During operation, the push rod 504 on the outer wall of the conveyor belt 503 pushes the battery heat insulation sheet forward.

[0039] In further embodiments of the present invention, such as Figure 1-5As shown, two fixing bolt heads are provided on the side wall of the conveyor belt 503, and a threaded opening is provided at the bottom of the push rod 504, which is connected to the threaded head.

[0040] In this embodiment, when the push rod 504 needs to be replaced with a different length or is damaged and needs repair, the push rod 504 can be rotated and unscrewed to replace it with a new push rod 504.

[0041] In further embodiments of the present invention, such as Figure 1-7 As shown, the end of the support frame 101 is provided with a square hole, and a square pin 102 is movably inserted inside the square hole. The auxiliary frame 301 is provided with a short tube 302 on the side wall opposite to the positioning frame 3. The short tube 302 is provided with a docking square hole. The square hole on the side wall of the support frame 101 and the docking square hole inside the short tube 302 are connected by the square pin 102. The top of both the positioning frame 3 and the auxiliary frame 301 is provided with a through groove 6.

[0042] In this embodiment, after the square pin 102 is pulled out, the positioning frame 3 and the auxiliary frame 301 can be rotated 90 degrees and laid flat. After the through slot 6 is laid flat, the straight rod 103 is removed. The staff can then insert the battery heat insulation sheet into the through slot 6. The battery heat insulation sheet under the light can be heated, and the staff can observe the bending of the battery heat insulation sheet after heating.

[0043] In further embodiments of the present invention, such as Figure 6-7 As shown, a linear array of steel balls is rotatably arranged on both inner walls of the through groove 6, and the gap between the steel balls is greater than the thickness of the heat insulation sheet of the battery to be tested.

[0044] In this embodiment, the steel balls on the two inner sidewalls of the through slot 6 reduce the frictional force of the battery heat insulation sheet being pushed.

[0045] In further embodiments of the present invention, such as Figure 1 , 8 As shown, the light heating adjustment mechanism includes an irradiation platform 2 fixedly installed above the base plate 1. A heating lamp device is installed inside the irradiation platform 2. Cantilever beams 201 are provided on both the left and right sides of the base plate 1. A positioning motor 202 is fixedly installed at the top of the cantilever beams 201. Three bifurcated brackets 203 with a mutual deviation of 120 degrees are provided at the end of the rotation shaft of the positioning motor 202. A light shield 204 is provided at the end of the bifurcated brackets 203. The heights of the bifurcated brackets 203 and the light shield 204 on the left and right sides are not the same. The height of the left bifurcated bracket 203 and the light shield 204 is greater than that of the right bifurcated bracket 203 and the light shield 204.

[0046] In this embodiment, the two positioning motors 202 drive the fork frame 203 and the light shield 204 to rotate. During this process, the light shield 204 can take turns reaching the bottom of the irradiation table. The light shield 204 can block light individually, or two light shields 204 can overlap to block light. This can create a situation where light can pass through locally, and the battery heat insulation sheet under the light can be locally heated.

[0047] In further embodiments of the present invention, such as Figure 1 , 8 As shown, the light-shielding plate 204 has three types of light-transmitting holes at its center, and the shapes of the three types of light-transmitting holes are circular, rectangular and triangular.

[0048] In this embodiment, the three types of light-transmitting holes in the left and right groups can overlap each other, which allows light to pass through light control of different shapes, thereby simulating heating areas of different shapes, and allowing staff to observe the bending of different local heating.

[0049] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0050] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0051] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A local heating testing device for high-temperature resistant heat insulation sheets used in power batteries, characterized in that: Includes a base plate (1), on both the left and right sides of the base plate (1) a set of support frames (101) are provided, and in the middle of the two sets of support frames (101) a positioning frame (3) is provided, and at both the front and rear ends of the positioning frame (3) a detachable auxiliary frame (301) is provided, and the positioning frame (3) and the auxiliary frame (301) are rotatably arranged in the middle of the support frame (101); A straight rod (103) is provided at the middle position of the top of the base plate (1), and the two ends of the straight rod (103) are fixedly connected to the top surface of the base plate (1) through a bearing seat. The bottom of the positioning frame (3) and the auxiliary frame (301) are both provided with an assembly groove (402). The assembly groove (402) and the vertical surface form an inward 15-degree angle. An arc frame (4) is disassembled and installed on the side wall of the assembly groove (402). Several steering steel balls (401) are arranged in a partial annular array on the arc surface at the bottom of the arc frame (4). A linear array of lubricating steel balls (303) is provided on the inner side wall of the assembly groove (402) at the bottom of the auxiliary frame (301). The height of the lowest part of the arc surface of the arc frame (4) is lower than the axial height of the straight rod (103). The straight rod (103) is also provided with battery heat insulation sheet propulsion components on both sides, and a light heating adjustment mechanism is provided above the base plate (1); The battery heat insulation sheet propulsion assembly includes two conveying shaft seats on the front and rear side walls of the base plate (1). A horizontal shaft (501) is rotatably provided on one side of the conveying shaft seat. The front horizontal shaft (501) is connected to the output shaft of the stepper motor (5). Two conveying wheels (502) are fixedly installed on the horizontal shaft (501). The front and rear conveying wheels (502) are connected by two conveyor belts (503) wrapped around each other. Two push rods (504) are provided on the side wall of the conveyor belts (503). Two fixing bolt heads are provided on the side wall of the conveyor belt (503), and a threaded opening is provided at the bottom of the push rod (504), and the threaded opening at the bottom of the push rod (504) is connected to the threaded head; The end of the support frame (101) is provided with a square hole, and a square pin (102) is movably inserted inside the square hole. The side wall of the auxiliary frame (301) facing away from the positioning frame (3) is provided with a short tube (302), and the inside of the short tube (302) is provided with a docking square hole. The square hole on the side wall of the support frame (101) and the docking square hole inside the short tube (302) are connected by the square pin (102). The top of the positioning frame (3) and the auxiliary frame (301) are both provided with a through groove (6).

2. The local heating testing device for high-temperature resistant heat insulation sheets for power batteries according to claim 1, characterized in that: The two inner walls of the through groove (6) are each rotatably provided with a linear array of steel balls, and the gap between the steel balls is greater than the thickness of the heat insulation sheet of the battery to be tested.

3. The local heating testing device for high-temperature resistant heat insulation sheets for power batteries according to claim 1, characterized in that: The light heating adjustment mechanism includes an irradiation platform (2) fixedly installed above the base plate (1). The irradiation platform (2) is equipped with a heating lamp device. The base plate (1) is provided with cantilever beams (201) on both the left and right sides. A positioning motor (202) is fixedly installed at the top of the cantilever beams (201). The end of the rotating shaft of the positioning motor (202) is provided with three bifurcated brackets (203) that are 120 degrees apart from each other. The end of the bifurcated brackets (203) is provided with a light shield (204). The heights of the bifurcated brackets (203) and the light shield (204) on the left and right sides are not the same. The height of the left bifurcated bracket (203) and the light shield (204) is greater than that of the right bifurcated bracket (203) and the light shield (204).

4. The local heating testing device for high-temperature resistant heat insulation sheets for power batteries according to claim 3, characterized in that: The light-shielding plate (204) has three types of light-transmitting holes in its center, which are circular, rectangular and triangular in shape.

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