Battery box pressure resistance testing device

Abstract

The utility model discloses a kind of battery box pressure resistance testing devices, including sealing fixture, explosion-proof box and detection mechanism, sealing fixture includes base and sealing cover, base is provided with positioning groove, positioning groove is used to support positioning battery box, sealing cover is detachably connected with base, sealing cover is covered on positioning groove, sealing cover is provided with sealing washer, sealing washer is abutted with the opening of battery box to seal the opening of battery box, sealing cover is also provided with air hole, air hole is communicated with the opening of battery box;Explosion-proof box includes box and box door, box has box mouth, box door is used to open and close box mouth, box contains sealing fixture;Detection mechanism includes gas pipe, gas pipe extends to the inside of box to connect air hole, passing through box.The utility model of a kind of battery box pressure resistance testing devices, battery box can be tested in isolation environment, prevent the explosion leakage of battery box when inside overpressure, ensure the safety of test process.

Description

Technical Field

[0001] This utility model relates to the technical field of battery box production equipment, and in particular to a battery box pressure resistance testing device. Background Technology

[0002] In the production process of electric vehicle battery boxes, aluminum plates are stamped to form battery boxes.

[0003] Specifically, the battery box is a rectangular box with an opening on one side.

[0004] To ensure the quality of the battery boxes, it is necessary to conduct random checks on the pressure resistance of the battery boxes produced in batches.

[0005] Currently, the common method for testing the pressure resistance of battery boxes is to seal the opening of the battery box with a sealing cap, then introduce gas into the battery box through the vent on the sealing cap, and test the pressure resistance of the battery box by detecting the gas pressure.

[0006] However, when the battery box is subjected to pressure during the withstand test, excessive pressure inside the battery box can easily cause it to explode. Existing methods for testing the withstand pressure of battery boxes cannot ensure the safety of the testing process. Utility Model Content

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery box pressure resistance testing device, which can perform pressure resistance testing on the battery box in an isolated environment, preventing explosion and leakage when the battery box is subjected to excessive internal pressure, and ensuring the safety of the testing process.

[0008] A battery box withstand voltage testing device according to an embodiment of the present invention includes: A sealing fixture includes a base and a sealing cover. The base is provided with a positioning groove for supporting and positioning a battery box. The sealing cover is detachably connected to the base and covers the positioning groove. The sealing cover is provided with a sealing gasket that abuts against the opening of the battery box to seal the opening. The sealing cover is also provided with a vent hole that communicates with the opening of the battery box and is used to allow air to pass into the battery box. An explosion-proof box includes a box body and a box door. The box body has a box opening, and the box door is used to open and close the box opening. The box body houses the sealing fixture. The testing mechanism includes an air supply pipe that extends through the housing and into the housing to connect to the vent.

[0009] A battery box withstand voltage testing device according to an embodiment of the present invention has at least the following beneficial effects: 1. This utility model provides a sealing fixture, which includes a base and a sealing cover. The base is provided with a positioning groove for supporting and positioning the battery box, thereby ensuring that the battery box is fixed in position during the test and reducing sealing defects or test errors caused by positional deviation.

[0010] 2. This utility model uses a sealing cover to cover the positioning groove. The sealing cover is provided with a sealing gasket. The sealing gasket abuts against the opening of the battery box to seal the opening of the battery box. Thus, the sealing gasket effectively seals the opening of the battery box and ensures the accuracy of the pressure test.

[0011] 3. This utility model makes it easy to place and remove the battery box by making the sealing cover detachably connected to the base.

[0012] 4. This utility model incorporates an explosion-proof enclosure, which includes a body and a door. The body has an opening, and the door is used to open and close the opening. The body houses a sealing fixture. It is understood that by placing the entire sealing fixture inside the explosion-proof enclosure for pressure testing, even if the battery box explodes due to excessive pressure during the test, the shock wave, fragments, and high-pressure gas generated by the explosion will be effectively blocked and absorbed by the robust explosion-proof enclosure, preventing harm to operators, surrounding equipment, and the environment, and ensuring the safety of the testing process.

[0013] 5. This utility model enables the safe introduction of pressurized gas into the battery box in a sealed and explosion-proof environment by setting up a gas supply pipe that extends through the box and connects to the vent.

[0014] According to some embodiments of the present invention, the horizontal ends of the positioning groove penetrate the base, and the two sides of the positioning groove abut against the two side walls of the battery box for positioning.

[0015] The advantage of this invention is that by having the horizontal ends of the positioning groove penetrate the base, and the two sides of the positioning groove abutting against the two side walls of the battery box for positioning, it can be understood that the two ends of the positioning groove are open, so that the positioning groove is positioned only by the two sides facing the battery box, and the two ends of the positioning groove do not restrict the battery box. This allows the two ends of the positioning groove to bulge and deform towards the two ends of the positioning groove when the battery box is internally compressed, thereby avoiding the base from hindering the expansion of the battery box when it is internally compressed and affecting the test results.

[0016] According to some embodiments of the present invention, the bottom wall of the positioning groove is provided with grooves extending to both ends of the positioning groove.

[0017] The advantage of this invention is that the bottom wall of the positioning groove is provided with grooves extending to both ends of the positioning groove. It can be understood that the aluminum material of the battery box has ductility. When the inside of the battery box is under pressure, the battery box can use its own ductility to ensure pressure resistance. Thus, the grooves on the bottom wall of the positioning groove allow the battery box to bulge and deform when it is under internal pressure, further reducing the restriction of the base on the extension of the battery box, which is conducive to improving the accuracy of the pressure resistance test results.

[0018] According to some embodiments of the present invention, the sealing cover is provided with a locking bolt, and the top of the base is provided with a first threaded hole. The locking bolt is threadedly connected to the first threaded hole to fix the sealing cover to the base.

[0019] The advantages of this invention are: by providing a locking bolt on the sealing cover and a first threaded hole on the top of the base, the locking bolt is threadedly connected to the first threaded hole to fix the sealing cover to the base. It can be understood that the threaded connection between the locking bolt and the first threaded hole on the base can apply a controllable and strong locking force, firmly pressing the sealing cover onto the base, ensuring that the sealing gasket can obtain sufficient and uniform compression, thereby forming a reliable airtight seal at the edge of the battery box opening, preventing gas leakage during pressurization, and ensuring the accuracy and effectiveness of the pressure resistance test. In addition, the detachable connection between the locking bolt and the first threaded hole also facilitates operation and maintenance.

[0020] According to some embodiments of the present invention, multiple first threaded holes are provided, and the multiple first threaded holes are respectively located on both sides of the positioning groove, and the sealing cover is correspondingly provided with multiple locking bolts.

[0021] The advantages are: by setting multiple first threaded holes, which are respectively located on both sides of the positioning groove, and the sealing cover is correspondingly provided with multiple locking bolts, it can be understood that by setting multiple first threaded holes and corresponding multiple locking bolts on both sides of the positioning groove, the locking force can be evenly distributed along the length of the sealing cover, avoiding the problems of deformation and warping of the sealing cover and uneven force on the sealing gasket caused by applying force at a single point or a few points. At the same time, the evenly distributed locking force further improves the reliability and consistency of the seal, and enhances the structural stability of the entire sealing fixture during the pressurization process.

[0022] According to some embodiments of the present invention, the sealing cover includes a cover plate and a positioning frame disposed at the bottom of the cover plate. The positioning frame abuts against the top surface of the base. The positioning frame is used to cover the outer periphery of the opening of the battery box and is used to position the battery box.

[0023] The advantages of this invention are: by including a cover plate and a positioning frame at the bottom of the cover plate in the sealing cover, the positioning frame abuts against the top surface of the base, and the positioning frame is used to wrap around the outer perimeter of the opening of the battery box, the positioning frame is used to position the battery box. It can be understood that, on the one hand, the positioning frame abuts against the top surface of the base, limiting the vertical height of the sealing cover and ensuring that the compression of the sealing gasket is appropriate; on the other hand, the positioning frame wraps around the outer perimeter of the opening of the battery box, providing additional positioning constraints on the battery box in the horizontal plane, preventing it from shaking or shifting, and further enhancing the positional stability of the battery box during the test.

[0024] According to some embodiments of the present invention, the sealing gasket is disposed between the cover plate and the positioning frame.

[0025] The advantages of this invention are: by placing the sealing gasket between the cover plate and the positioning frame, the sealing gasket is clamped between these two relatively rigid components, which facilitates the installation, fixing, and replacement of the sealing gasket. In addition, when the locking bolt applies pressure, the pressure of the cover plate is transmitted more evenly to the sealing gasket through the positioning frame, ensuring that the entire contact surface of the sealing gasket is subjected to uniform force, forming a more stable and reliable airtight seal line, and reducing the risk of local leakage.

[0026] According to some embodiments of the present invention, the cover plate is provided with connecting bolts, the positioning frame is provided with a second threaded hole, and the connecting bolts pass through the sealing gasket and are threadedly connected to the second threaded hole to connect and fix the cover plate, the sealing gasket and the positioning frame.

[0027] The advantages of this invention are: by providing connecting bolts on the cover plate and a second threaded hole on the positioning frame, the connecting bolts pass through the sealing gasket and are threaded into the second threaded hole to connect and fix the cover plate, sealing gasket, and positioning frame. It can be understood that by fixing the cover plate, sealing gasket, and positioning frame into a whole component through connecting bolts, the structural rigidity and integrity of the sealing cover are significantly improved. This ensures that there will be no relative displacement or loosening between the cover plate, sealing gasket, and positioning frame during the locking of the sealing cover to the base and the pressurization of the battery box by the device, thus maintaining a stable sealing state. At the same time, the integrated cover plate, sealing gasket, and positioning frame make the disassembly and installation of the sealing cover more convenient and simple.

[0028] According to some embodiments of the present invention, multiple second threaded holes are provided, and the multiple second threaded holes are distributed on the top of the four peripheral walls of the positioning frame, and multiple connecting bolts are provided accordingly.

[0029] The advantages of this invention are: by setting multiple second threaded holes distributed on the top of the four peripheral walls of the positioning frame, and correspondingly setting multiple connecting bolts, it can be understood that by setting multiple second threaded holes on the top of the four peripheral walls of the positioning frame and fixing them with multiple connecting bolts, the pressure of the cover plate on the sealing gasket and the positioning frame can be evenly distributed on the entire annular contact area of ​​the sealing gasket. This method of applying uniform pressure to the circumference of the sealing gasket effectively avoids the problem of insufficient or excessive local compression of the sealing gasket, and maximizes the reliability and consistency of the seal. At the same time, multiple connection points also significantly enhance the structural strength and deformation resistance of the entire sealing cover assembly.

[0030] According to some embodiments of the present invention, the detection mechanism further includes an air compressor and a pressure gauge. The pressure gauge has an air inlet and an air outlet. The air inlet is connected to the air compressor, and the air outlet is connected to the air supply pipe. The pressure gauge is used to monitor the gas pressure input by the detection mechanism to the battery box.

[0031] The advantages of this invention are that the testing mechanism also includes an air compressor and a pressure gauge. The pressure gauge has an air inlet and an air outlet. The air inlet is connected to the air compressor, and the air outlet is connected to the air supply pipe. The pressure gauge is used to monitor the gas pressure input to the battery box by the testing mechanism. It can be understood that by setting the air compressor as the air source, a stable and controllable gas pressure input is provided. The pressure gauge is directly connected to the air circuit, which can monitor and display the gas pressure value input to the battery box in real time and accurately. This allows the operator to accurately control the pressurization process and observe the pressure changes in real time, thereby accurately judging the pressure resistance performance and test status of the battery box, and providing direct and reliable data basis for quality judgment.

[0032] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a battery box withstand voltage testing device according to an embodiment of the present invention; Figure 2 for Figure 1 This is a schematic diagram of a battery box withstand voltage testing device from another perspective; Figure 3 for Figure 1 The diagram shows the structure of the sealing fixture; Figure 4 for Figure 3 The top view shown; Figure 5 for Figure 4 The AA section view shown; Figure 6 for Figure 3 The exploded view of the part is shown.

[0035] Reference numerals: 100-Sealing fixture, 110-Base, 120-Sealing cover, 130-Positioning groove, 140-Sealing gasket, 150-Ventilation hole, 160-Explosion-proof box, 170-Box body, 180-Box door, 190-Box opening, 200-Detection mechanism, 210-Air supply pipe, 220-Groove, 230-Locking bolt, 240-First threaded hole, 250-Cover plate, 260-Positioning frame, 270-Connecting bolt, 280-Second threaded hole, 290-Air compressor, 300-Pressure gauge. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This invention describes a battery box withstand voltage testing device according to an embodiment of the present invention.

[0041] This utility model aims to provide an embodiment of a battery box withstand voltage testing device.

[0042] Reference Figure 1 and Figure 2 In this embodiment, a battery box withstand voltage testing device mainly includes a sealing fixture 100, an explosion-proof box 160, and a testing mechanism 200.

[0043] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6 For the sealing fixture 100, the sealing fixture 100 includes a base 110 and a sealing cover 120. The base 110 is provided with a positioning groove 130, which is used to support and position the battery box. The sealing cover 120 is detachably connected to the base 110 and covers the positioning groove 130. The sealing cover 120 is provided with a sealing gasket 140, which abuts against the opening of the battery box to seal the opening of the battery box. The sealing cover 120 is also provided with a vent hole 150, which communicates with the opening of the battery box and is used to allow air to pass into the battery box.

[0044] In this embodiment, a sealing fixture 100 is provided, which includes a base 110 and a sealing cover 120. The base 110 is provided with a positioning groove 130, which is used to support and position the battery box, thereby ensuring that the battery box is fixed in position during the test and reducing the sealing failure or test error caused by position displacement.

[0045] In this embodiment, the sealing cover 120 is placed on the positioning groove 130. The sealing cover 120 is provided with a sealing gasket 140. The sealing gasket 140 abuts against the opening of the battery box to seal the opening of the battery box. Thus, the sealing gasket 140 effectively seals the opening of the battery box, ensuring the accuracy of the pressure test.

[0046] This embodiment makes it easy to place and remove the battery box by making the sealing cover 120 detachably connected to the base 110.

[0047] In some specific embodiments, the horizontal ends of the positioning groove 130 penetrate the base 110, and the two sides of the positioning groove 130 abut against the two side walls of the battery box for positioning.

[0048] Understandably, the two ends of the positioning groove 130 are open, so that the positioning groove 130 is positioned only by the two sides facing the battery box. The two ends of the positioning groove 130 do not restrain the battery box, so that the two ends of the positioning groove 130 can allow the battery box to bulge and deform towards the two ends of the positioning groove 130 when it is internally compressed. This avoids the base 110 from hindering the extension of the battery box when it is internally compressed, thus affecting the test results.

[0049] In some specific embodiments, the bottom wall of the positioning groove 130 is provided with grooves 220 extending to both ends of the positioning groove 130.

[0050] It is understandable that the aluminum material of the battery box is ductile. When the inside of the battery box is under pressure, the battery box can use its own ductility to ensure pressure resistance. Therefore, the groove 220 on the bottom wall of the positioning groove 130 allows the battery box to bulge and deform when it is under internal pressure, further reducing the restriction of the base 110 on the extension of the battery box, which is conducive to improving the accuracy of the pressure resistance test results.

[0051] In some specific embodiments, the sealing cover 120 is provided with a locking bolt 230, and the top of the base 110 is provided with a first threaded hole 240. The locking bolt 230 is threadedly connected to the first threaded hole 240 to fix the sealing cover 120 and the base 110.

[0052] Understandably, the threaded connection between the locking bolt 230 and the first threaded hole 240 on the base 110 can apply a controllable and powerful locking force to firmly press the sealing cover 120 onto the base 110, ensuring that the sealing gasket 140 can obtain sufficient and uniform compression, thereby forming a reliable airtight seal at the edge of the battery box opening, preventing gas leakage during pressurization, and ensuring the accuracy and effectiveness of the pressure resistance test. In addition, the detachable connection between the locking bolt 230 and the first threaded hole 240 also facilitates operation and maintenance.

[0053] Furthermore, multiple first threaded holes 240 are provided, and the multiple first threaded holes 240 are respectively located on both sides of the positioning groove 130, and the sealing cover 120 is provided with multiple locking bolts 230 accordingly.

[0054] It is understandable that by setting multiple first threaded holes 240 and corresponding multiple locking bolts 230 on both sides of the positioning groove 130, the locking force can be evenly distributed along the length of the sealing cover 120, avoiding the problems of deformation and warping of the sealing cover 120 and uneven force on the sealing gasket 140 caused by applying force at a single point or a few points. At the same time, the evenly distributed locking force further improves the reliability and consistency of the seal, and enhances the structural stability of the entire sealing fixture 100 during the pressurization process.

[0055] In some specific embodiments, the sealing cover 120 includes a cover plate 250 and a positioning frame 260 disposed at the bottom of the cover plate 250. The positioning frame 260 abuts against the top surface of the base 110. The positioning frame 260 is used to cover the outer periphery of the opening of the battery box and to position the battery box.

[0056] Understandably, on the one hand, the positioning frame 260 abuts against the top surface of the base 110, limiting the vertical height of the sealing cover 120 and ensuring that the compression of the sealing gasket 140 is appropriate. On the other hand, the positioning frame 260 wraps around the outer perimeter of the battery box opening, providing additional positioning constraints on the battery box in the horizontal plane, preventing it from shaking or shifting, and further enhancing the positional stability of the battery box during testing.

[0057] Furthermore, the sealing gasket 140 is disposed between the cover plate 250 and the positioning frame 260, thereby clamping the sealing gasket 140 between the two relatively rigid components of the cover plate 250 and the positioning frame 260. This facilitates the installation, fixing, and replacement of the sealing gasket 140. In addition, when the locking bolt 230 applies pressure, the pressure of the cover plate 250 is transmitted more evenly to the sealing gasket 140 through the positioning frame 260, ensuring that the entire contact surface of the sealing gasket 140 is subjected to uniform force, forming a more stable and reliable airtight seal line, and reducing the risk of local leakage.

[0058] In some specific embodiments, the cover plate 250 is provided with connecting bolts 270, and the positioning frame 260 is provided with a second threaded hole 280. The connecting bolts 270 pass through the sealing gasket 140 and are threadedly connected to the second threaded hole 280 to connect and fix the cover plate 250, the sealing gasket 140 and the positioning frame 260.

[0059] Understandably, by fixing the cover plate 250, sealing gasket 140, and positioning frame 260 into a single component using connecting bolts 270, the structural rigidity and integrity of the sealing cover 120 are significantly improved. This ensures that during the locking of the sealing cover 120 to the base 110 and the pressurization of the battery box by the device, there will be no relative displacement or loosening between the cover plate 250, sealing gasket 140, and positioning frame 260, thus maintaining a stable sealing state. At the same time, the integrated cover plate 250, sealing gasket 140, and positioning frame 260 make the disassembly and installation of the sealing cover 120 more convenient and simple.

[0060] Furthermore, multiple second threaded holes 280 are provided, and multiple second threaded holes 280 are distributed on the top of the four peripheral walls of the positioning frame 260, and multiple connecting bolts 270 are provided accordingly.

[0061] Understandably, multiple second threaded holes 280 are provided on the top of the four peripheral walls of the positioning frame 260, and multiple connecting bolts 270 are used for fixing. This allows the pressure of the cover plate 250 on the sealing gasket 140 and the positioning frame 260 to be evenly distributed on the entire annular contact area of ​​the sealing gasket 140. This method of applying pressure evenly to the circumference of the sealing gasket 140 effectively avoids the problem of insufficient or excessive local compression of the sealing gasket 140, and maximizes the reliability and consistency of the seal. At the same time, the multiple connection points also significantly enhance the structural strength and deformation resistance of the entire sealing cover 120 assembly.

[0062] For the explosion-proof box 160, the explosion-proof box 160 includes a box body 170 and a box door 180. The box body 170 has a box opening 190, and the box door 180 is used to open and close the box opening 190. The box body 170 houses a sealing fixture 100.

[0063] Understandably, by placing the entire sealed fixture 100 inside the explosion-proof box 160 for pressure testing, even if the battery box explodes due to excessive pressure during the test, the shock wave, fragments, and high-pressure gas generated by the explosion will be effectively blocked and absorbed by the robust explosion-proof box 160, avoiding harm to operators, surrounding equipment, and the environment, and ensuring the safety of the testing process.

[0064] In some specific embodiments, one side of the door 180 is hinged to the box body 170, and a lock body is provided between the other side of the door 180 and the box body 170, thereby facilitating the opening and closing of the door 180.

[0065] Specifically, the lock body can be a cabinet door lock body commonly used in the prior art, which will not be elaborated further here.

[0066] For the testing mechanism 200, the testing mechanism 200 includes a gas supply pipe 210, which extends through the housing 170 and into the housing 170 to connect to the vent 150, thereby enabling the safe introduction of pressurized gas into the battery box in a sealed and explosion-proof environment.

[0067] In some specific embodiments, the detection mechanism 200 further includes an air compressor 290 and a pressure gauge 300. The pressure gauge 300 has an air inlet and an air outlet. The air inlet is connected to the air compressor 290, and the air outlet is connected to the air supply pipe 210. The pressure gauge 300 is used to monitor the gas pressure input by the detection mechanism 200 to the battery box.

[0068] Understandably, by setting the air compressor 290 as the air source, a stable and controllable gas pressure input is provided. The pressure gauge 300 is directly connected to the air circuit, which can monitor and display the gas pressure value input into the battery box in real time and accurately. This allows the operator to precisely control the pressurization process and observe the pressure changes in real time, thereby accurately judging the pressure resistance performance and test status of the battery box and providing direct and reliable data for quality judgment.

[0069] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0071] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0072] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0073] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0074] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A battery box withstand voltage testing device, characterized in that, include: A sealing fixture (100) includes a base (110) and a sealing cover (120). The base (110) is provided with a positioning groove (130) for supporting and positioning the battery box. The sealing cover (120) is detachably connected to the base (110) and covers the positioning groove (130). The sealing cover (120) is provided with a sealing gasket (140) that abuts against the opening of the battery box to seal the opening. The sealing cover (120) is also provided with a vent hole (150) that communicates with the opening of the battery box and is used to vent air into the battery box. An explosion-proof box (160) includes a box body (170) and a box door (180), the box body (170) having a box opening (190), the box door (180) being used to open and close the box opening (190), and the box body (170) accommodating the sealing fixture (100). The testing unit (200) includes an air supply pipe (210) that extends through the housing (170) into the housing (170) to connect to the vent (150).

2. The battery box withstand voltage testing device according to claim 1, characterized in that, The horizontal ends of the positioning groove (130) penetrate the base (110), and the two sides of the positioning groove (130) abut against the two side walls of the battery box for positioning.

3. The battery box withstand voltage testing device according to claim 2, characterized in that, The bottom wall of the positioning groove (130) is provided with grooves (220) extending to both ends of the positioning groove (130).

4. The battery box withstand voltage testing device according to claim 1, characterized in that, The sealing cap (120) is provided with a locking bolt (230), and the top of the base (110) is provided with a first threaded hole (240). The locking bolt (230) is threadedly connected to the first threaded hole (240) to fix the sealing cap (120) and the base (110).

5. The battery box withstand voltage testing device according to claim 4, characterized in that, The first threaded hole (240) is provided in multiple ways, and the multiple first threaded holes (240) are respectively located on both sides of the positioning groove (130). The sealing cover (120) is provided with multiple locking bolts (230).

6. The battery box withstand voltage testing device according to claim 1, characterized in that, The sealing cover (120) includes a cover plate (250) and a positioning frame (260) disposed at the bottom of the cover plate (250). The positioning frame (260) abuts against the top surface of the base (110). The positioning frame (260) is used to wrap around the outer perimeter of the opening of the battery box and to position the battery box.

7. The battery box withstand voltage testing device according to claim 6, characterized in that, The sealing gasket (140) is disposed between the cover plate (250) and the positioning frame (260).

8. The battery box withstand voltage testing device according to claim 7, characterized in that, The cover plate (250) is provided with a connecting bolt (270), and the positioning frame (260) is provided with a second threaded hole (280). The connecting bolt (270) passes through the sealing gasket (140) and is threadedly connected to the second threaded hole (280) to connect and fix the cover plate (250), the sealing gasket (140) and the positioning frame (260).

9. A battery box withstand voltage testing device according to claim 8, characterized in that, Multiple second threaded holes (280) are provided, and multiple second threaded holes (280) are distributed on the top of the four peripheral walls of the positioning frame (260), and multiple connecting bolts (270) are provided accordingly.

10. A battery box withstand voltage testing device according to claim 1, characterized in that, The detection mechanism (200) further includes an air compressor (290) and a pressure gauge (300), the pressure gauge (300) having an air inlet and an air outlet, the air inlet being connected to the air compressor (290) and the air outlet being connected to the air supply pipe (210), the pressure gauge (300) being used to monitor the gas pressure input by the detection mechanism (200) to the battery box.

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