Battery short circuit testing device

Abstract

The utility model relates to the technical field of battery testing, and discloses a battery short circuit testing device which comprises a testing box, a dust collection mechanism and a driving mechanism. The test box comprises a box body and a box door, the box body is provided with an accommodating cavity for accommodating a battery, the box body is rotatably connected to the box body, and the box body is provided with an air inlet hole and a pressure relief hole which are communicated with the accommodating cavity; the dust collection mechanism comprises a dust collection cover and a dust collection pipe; the driving mechanism is connected to the dust collection cover and can drive the dust collection cover to move, so that the dust collection cover covers the pressure relief hole; according to the battery short circuit testing device provided by the utility model, through the cooperation of the dust collection cover, the dust collection pipe and the air inlet hole, the rapid replacement of air in the accommodating cavity can be realized, the smoke dust in the accommodating cavity can be rapidly and thoroughly exhausted, the recording and observation of the testing process are facilitated, and the accurate acquisition of key data is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a battery short-circuit testing device. Background Technology

[0002] With the development of new energy battery technology, battery applications are becoming increasingly widespread, and their short-circuit testing is crucial to safety and reliability. Failure to perform this test can easily lead to combustion or explosion, threatening the safety of personnel and equipment.

[0003] Currently, battery short-circuit tests are typically conducted in explosion-proof rooms. However, this traditional testing method has significant drawbacks. On the one hand, when a battery catches fire or explodes during testing, a large amount of smoke and dust will quickly fill the explosion-proof room. The smoke system inside the room cannot completely remove the smoke and dust in a short time, which seriously affects the recording and observation of the testing process and makes it impossible to accurately obtain key data. On the other hand, the fragments generated by the explosion will fly randomly in any direction. Even inside an explosion-proof room, it is difficult to completely avoid accidental injury to surrounding equipment and personnel, posing a great safety hazard and low safety. Utility Model Content

[0004] Aimed at solving at least one of the technical problems existing in the prior art, this utility model aims to provide a battery short-circuit testing device that is highly safe, facilitates the recording and observation of the testing process, and helps to accurately obtain key data.

[0005] To achieve the above objectives, this utility model provides a battery short-circuit testing device, including a test box, a dust collection mechanism, and a driving mechanism. The test box includes a box body and a box door. The box body has a receiving cavity for accommodating a battery. The box body is rotatably connected to the receiving cavity and is used to open or close the receiving cavity. The box body has an air inlet and a pressure relief hole communicating with the receiving cavity. The dust collection mechanism includes a dust collection hood and a dust collection pipe. The dust collection hood is located on the side of the pressure relief hole away from the receiving cavity, and the dust collection pipe is connected to the dust collection hood. The driving mechanism is connected to the dust collection hood and can drive the dust collection hood to move so that the dust collection hood covers the pressure relief hole.

[0006] In some embodiments, the battery short-circuit testing device further includes a support frame disposed within the accommodating cavity; the accommodating cavity has a bottom wall; the support frame includes a support leg and a support plate, one end of the support leg is connected to the bottom wall, and the support plate is connected to the end of the support leg away from the bottom wall and is used to support the battery.

[0007] In some embodiments, the housing has a height direction that is perpendicular to the auxiliary plane, and the air inlet is located on the bottom wall; wherein, along the height direction, the orthographic projection of the support plate onto the auxiliary plane covers the orthographic projection of the wall of the air inlet onto the auxiliary plane.

[0008] In some embodiments, the battery short-circuit testing device further includes refractory bricks and asbestos, the refractory bricks being connected to the side of the support plate opposite to the bottom wall, and the asbestos being connected to the side of the refractory bricks opposite to the support plate.

[0009] In some embodiments, the battery short-circuit testing device further includes an observation window; the door has a through observation opening, the observation window is connected to the door and seals the observation opening; the housing also has a wire passage hole communicating with the accommodating cavity.

[0010] In some embodiments, the battery short-circuit testing device further includes a first protective grille and a second protective grille. The first protective grille has a plurality of first grille holes, is disposed within the pressure relief hole, and its outer wall is connected to the hole wall of the pressure relief hole. The second protective grille has a plurality of second grille holes, is disposed within the air inlet hole, and its outer wall is connected to the hole wall of the air inlet hole.

[0011] In some embodiments, the suction pipe is a corrugated pipe.

[0012] In some embodiments, the driving mechanism includes a first guide rail and a driving member; the first guide rail is connected to the outer side of the housing, the dust hood is slidably connected to the first guide rail, and the driving member is connected to the dust hood and can drive the dust hood to slide along the guide rail so that the dust hood covers the pressure relief hole.

[0013] In some embodiments, the driving component is a driving cylinder; the driving mechanism further includes a second guide rail and a traction assembly, the second guide rail being connected to the outer top surface of the housing, the traction assembly including a mounting base, a first pulley, a guide member, a second pulley, and a traction rope, the guide member being slidably connected to the second guide rail, the second pulley being connected to the guide member, the mounting base being connected to the outer top surface of the housing and located between the guide member and the dust collection hood, the first pulley being connected to the mounting base, the traction rope being wound around the first pulley and the second pulley, with one end of the traction rope connected to the dust collection hood and the other end connected to the mounting base, the driving cylinder being connected to the guide member and capable of driving the guide member to slide along the second guide rail.

[0014] In some embodiments, the housing includes a first steel plate layer, a steel frame layer, and a second steel plate layer, wherein the second steel plate layer is disposed on the side of the first steel plate layer away from the accommodating cavity, and the steel frame layer is disposed between the first steel plate layer and the second steel plate layer.

[0015] Compared with the prior art, the battery short-circuit testing device of this utility model has the following advantages:

[0016] (1) The test chamber includes a chamber body and a rotating door. The chamber can be easily opened or closed by rotating the door, making it easy to place and take out batteries for testing. The operation is simple and convenient. When the battery in the chamber catches fire and explodes during the test, the chamber body and door can confine the fragments generated by the explosion within the chamber, preventing the fragments from flying randomly in any direction and avoiding accidental injury to surrounding equipment and personnel. The safety is high.

[0017] (2) By setting an air inlet on the housing that is connected to the accommodating cavity, the air inlet can provide the necessary airflow into the accommodating cavity and ensure the rationality of the test environment.

[0018] (3) By setting a pressure relief hole on the box that is connected to the accommodating cavity, when the battery in the accommodating cavity catches fire and explodes during the test, the pressure in the accommodating cavity can be released through the pressure relief hole, reducing the risk of excessive pressure inside the box.

[0019] (4) By setting up a dust collection mechanism and a drive mechanism and connecting the drive mechanism to the dust collection hood, when the battery in the containment cavity catches fire and explodes during the test, the drive mechanism drives the dust collection hood to move and cover the pressure relief hole. The dust collection hood and the dust collection pipe can suck out the air with smoke and dust in the containment cavity to the outside of the containment cavity, and the air inlet can send the outside air without smoke and dust into the inside of the containment cavity. Thus, through the coordinated cooperation of the dust collection hood, the dust collection pipe and the air inlet, the air in the containment cavity can be quickly replaced, and the smoke and dust in the containment cavity can be quickly and thoroughly discharged, which is convenient for recording and observing the test process and helps to accurately obtain key data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a battery short-circuit testing device provided in an embodiment of the present invention from a first-view perspective;

[0021] Figure 2 This is a schematic diagram of the structure of a battery short-circuit testing device provided in an embodiment of the present invention from a second perspective;

[0022] Figure 3 This is a schematic diagram of the structure of a battery short-circuit testing device provided in an embodiment of this utility model from a third-person perspective;

[0023] Figure 4 This is a schematic diagram of the structure of a battery short-circuit testing device provided in an embodiment of the present invention from a fourth-angle perspective;

[0024] Figure 5 This is a front view of a battery short-circuit testing device provided in an embodiment of this utility model;

[0025] Figure 6 This is a cross-sectional view of the box body provided in this embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the orthographic projection of the support plate and air inlet provided in this embodiment of the present invention onto an auxiliary plane;

[0027] Figure 8 This is a schematic diagram of the connection between the vacuuming mechanism and the driving mechanism provided in this embodiment of the utility model from a fifth-person perspective;

[0028] Figure 9 This is a schematic diagram of the connection between the dust collection mechanism and the drive mechanism provided in this embodiment of the utility model from a sixth-person perspective.

[0029] In the diagram, 1 is the test chamber; 11 is the chamber body; 12 is the door; 101 is the accommodating cavity; 102 is the air inlet; 103 is the pressure relief hole; 104 is the wire passage hole; 111 is the first steel plate layer; 112 is the steel frame layer; 113 is the second steel plate layer; 121 is the observation port; 1011 is the bottom wall; 1012 is the top wall; 1013 is the first side wall; and 1014 is the second side wall.

[0030] 2. Vacuuming mechanism; 21. Vacuum hood; 22. Vacuum hose;

[0031] 3. Drive mechanism; 31. First guide rail component; 32. Drive component; 33. Second guide rail component; 34. Traction assembly; 311. First guide rail; 312. Second guide rail; 331. Third guide rail; 332. Fourth guide rail; 341. Mounting base; 342. First pulley; 343. Guide component; 344. Second pulley; 345. Traction rope; 4. Support frame; 41. Support leg; 42. Support plate;

[0032] 5. Refractory bricks;

[0033] 6. Asbestos;

[0034] 7. Observation window;

[0035] 8. First protective grille; 81. First grille opening;

[0036] 9. Second protective grille; 91. Second grille opening;

[0037] 200. Auxiliary plane;

[0038] Z, altitude direction. Detailed Implementation

[0039] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation 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.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0045] In this application, the reference to "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 in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0046] like Figures 1-9 As shown, a preferred embodiment of the present invention provides a battery short-circuit testing device, comprising a test chamber 1, a dust extraction mechanism 2, and a drive mechanism 3. The test chamber 1 includes a chamber body 11 and a door 12. The chamber body 11 has a receiving cavity 101 for accommodating a battery. The receiving cavity 101 is rotatably connected to the chamber body 11 and used to open or close the receiving cavity 101. The chamber body 11 has an air inlet 102 and a pressure relief hole 103 communicating with the receiving cavity 101. The dust extraction mechanism 2 includes a dust extraction hood 21 and a dust extraction pipe 22. The dust extraction hood 21 is located on the side of the pressure relief hole 103 away from the receiving cavity 101, and the dust extraction pipe 22 is connected to the dust extraction hood 21. The drive mechanism 3 is connected to the dust extraction hood 21 and can drive the dust extraction hood 21 to move, so that the dust extraction hood 21 covers the pressure relief hole 103.

[0047] Based on this technical solution, the test chamber 1 includes a chamber body 11 and a rotatably connected door 12. The chamber cavity 101 can be easily opened or closed by rotating the door 12, making it convenient to place and remove batteries for testing. The operation is simple and convenient. When the battery in the chamber cavity 101 catches fire and explodes during the test, the chamber body 11 and the door 12 can confine the debris generated by the explosion within the chamber cavity 101, preventing the debris from flying randomly in any direction and avoiding accidental injury to surrounding equipment and personnel, thus ensuring high safety.

[0048] By providing an air inlet 102 on the housing 11 that communicates with the accommodating cavity 101, the air inlet 102 can provide the necessary airflow into the accommodating cavity 101, ensuring the rationality of the test environment.

[0049] By providing a pressure relief hole 103 on the housing 11 that communicates with the accommodating cavity 101, when the battery in the accommodating cavity 101 catches fire or explodes during the test, the pressure in the accommodating cavity 101 can be released through the pressure relief hole 103, reducing the risk of excessive pressure inside the housing 11.

[0050] By setting up a suction mechanism 2 and a drive mechanism 3 and connecting the drive mechanism 3 to the suction hood 21, when the battery in the accommodating cavity 101 catches fire and explodes during the test, the drive mechanism 3 drives the suction hood 21 to move and cover the pressure relief hole 103. The suction hood 21 and the suction pipe 22 can suck out the air containing smoke and dust in the accommodating cavity 101 to the outside of the accommodating cavity 101, and the air inlet 102 can send outside air without smoke and dust into the accommodating cavity 101. Thus, through the coordinated operation of the suction hood 21, the suction pipe 22 and the air inlet 102, the air in the accommodating cavity 101 can be quickly replaced, and the smoke and dust in the accommodating cavity 101 can be quickly and thoroughly discharged. This facilitates the recording and observation of the test process and helps to accurately obtain key data.

[0051] Optionally, the number of air inlets 102 may be one or more.

[0052] In this embodiment, there are multiple air inlets 102.

[0053] The battery short-circuit testing apparatus also includes testing equipment (not shown). Optionally, the testing equipment may be located inside or outside the receiving cavity 101.

[0054] The suction pipe 22 is a corrugated pipe. The corrugated pipe has the characteristic of being able to extend or compress freely. When the drive mechanism 3 drives the suction hood 21 to move, the free extension or compression of the corrugated pipe can adapt to the movement of the suction hood 21.

[0055] See Figure 1 , Figure 4 and Figure 5 The accommodating cavity 101 has a bottom wall 1011, a first side wall 1013, a top wall 1012, and two opposing second side walls 1014. The first side wall 1013 and the opening are arranged opposite to each other, and the two second side walls 1014 are respectively connected to the two ends of the first side wall 1013. The top wall 1012 and the bottom wall 1011 are arranged opposite to each other, and the first side wall 1013 and the two second side walls 1014 are all connected to the top wall 1012.

[0056] Optionally, the air inlet 102 may be provided in at least one of the bottom wall 1011, the top wall 1012, the first side wall 1013, and the second side wall 1014.

[0057] In this embodiment, the air inlet 102 is only provided on the bottom wall 1011.

[0058] Optionally, the pressure relief hole 103 may be provided in at least one of the bottom wall 1011, the top wall 1012, the first side wall 1013, and the second side wall 1014.

[0059] In this embodiment, the pressure relief hole 103 is only provided on the first sidewall 1013.

[0060] See Figure 1 and Figure 5 The battery short-circuit testing device provided in this embodiment of the invention also includes refractory bricks 5 and asbestos 6. Refractory bricks 5 are connected to the side of the support plate 42 away from the bottom wall 1011, and asbestos 6 is connected to the side of the refractory bricks 5 away from the support plate 42. Refractory bricks 5 and asbestos 6 have good high-temperature resistance. In the event of a battery fire or explosion, refractory bricks 5 and asbestos 6 can prevent the high temperature from being transmitted to other parts of the test chamber 1 and the outside, preventing the test chamber 1 from deforming or being damaged due to high temperature. Simultaneously, they reduce heat leakage, lowering the risk of injury to surrounding equipment and personnel due to high temperature, and further improving the safety of the testing process. Asbestos 6 has good insulation properties. Asbestos 6 can effectively isolate the current generated by the battery during the short-circuit test, preventing the current from being conducted to the support plate 42 and other components of the test chamber 1. This avoids short circuits or other circuit faults caused by current leakage, ensuring the stability of the electrical system of the testing device, contributing to more accurate and reliable test results, and avoiding test errors or incorrect judgments due to insulation problems.

[0061] See Figure 1 and Figure 5 The battery short-circuit testing device provided in this embodiment of the invention also includes a support frame 4 disposed within the accommodating cavity 101. The support frame 4 includes a support leg 41 and a support plate 42. One end of the support leg 41 is connected to the bottom wall 1011, and the support plate 42 is connected to the end of the support leg 41 away from the bottom wall 1011 and is used to support the battery. The support frame 4 can raise the battery to a certain height, making it easier for testers to install and remove the battery, and also facilitating the observation of the battery's state changes during the test, thus optimizing the test process and improving test efficiency.

[0062] See Figures 1-5 The battery short-circuit testing device provided in this embodiment of the present invention also includes an observation window 7; the door 12 is provided with a through observation opening 121, and the observation window 7 is connected to the door 12 and seals the observation opening 121. Test personnel or cameras can clearly observe the state changes of the battery during the short-circuit test through the observation window 7 from the outside of the test chamber 1.

[0063] In this embodiment, the observation window 7 is made of double-layered 15mm tempered glass, which facilitates observation and is also explosion-proof.

[0064] In some other embodiments, the viewing window 7 may also be made of tempered glass of other thicknesses, or of other transparent materials with fire-resistant and explosion-proof properties.

[0065] In some embodiments, the testing equipment is located outside the housing 11, which has a wire passage hole 104 communicating with the receiving cavity 101. The wires of the testing equipment located outside the housing 11 enter the receiving cavity 101 through the wire passage hole 104 to connect to the battery. The wire passage hole 104 allows the wires of the external testing equipment to smoothly enter the receiving cavity 101 and connect to the battery, simplifying the connection process between the testing equipment and the battery. It eliminates the need to frequently open the housing door 12 to connect the wires, saving operation time and reducing the risk of external interference affecting battery testing during the connection process, making the testing process more efficient and streamlined.

[0066] Optionally, the wire hole 104 may be provided in at least one of the bottom wall 1011, the top wall 1012, the first side wall 1013, and the second side wall 1014.

[0067] In this embodiment, the wire hole 104 is only provided on the bottom wall 1011.

[0068] See Figure 2 , Figure 5 and Figure 6 The battery short-circuit testing device provided in this embodiment of the invention further includes a first protective grille 8 and a second protective grille 9. The first protective grille 8 has a plurality of first grille holes 81. The first protective grille 8 is disposed within the pressure relief hole 103, and the outer wall of the first protective grille 8 is connected to the hole wall of the pressure relief hole 103. By placing the first protective grille 8 within the pressure relief hole 103, when the battery in the accommodating cavity 101 catches fire and explodes during the test, the first protective grille 8 can prevent fragments generated by the explosion from flying out of the pressure relief hole 103, avoiding accidental injury to surrounding equipment and personnel, and further improving safety.

[0069] The second protective grille 9 has multiple second grille holes 91. The second protective grille 9 is disposed within the air inlet 102, and the outer wall of the second protective grille 9 is connected to the hole wall of the air inlet 102. By placing the second protective grille 9 within the air inlet 102, when the battery in the accommodating cavity 101 catches fire and explodes during testing, the second protective grille 9 can prevent fragments generated by the explosion from flying out of the air inlet 102, avoiding accidental injury to surrounding equipment and personnel, and further improving safety.

[0070] Preferably, the protective grille is a metal grille. For example, the protective grille can be made of stainless steel, aluminum alloy, etc.

[0071] See Figure 6The enclosure 11 provided in this embodiment of the present invention includes a first steel plate layer 111, a steel frame layer 112, and a second steel plate layer 113. The second steel plate layer 113 is disposed on the side of the first steel plate layer 111 away from the accommodating cavity 101, and the steel frame layer 112 is disposed between the first steel plate layer 111 and the second steel plate layer 113. The enclosure 11 adopts a composite structure composed of the first steel plate layer 111, the steel frame layer 112, and the second steel plate layer 113. This composite structure is both high temperature resistant and explosion-proof. Specifically, the first steel plate layer 111 and the second steel plate layer 113 can effectively block heat conduction, and the metal material of the steel frame layer 112 also has high heat resistance. The three together can reduce the impact of high temperature on the internal and external environment of the enclosure 11. The first steel plate layer 111 and the second steel plate layer 113 can directly withstand the pressure wave generated by the explosion, while the steel skeleton layer 112, as a supporting structure, can disperse stress, prevent the steel plate from deforming or cracking under pressure, avoid the splashing of explosion fragments and energy leakage, greatly reduce the risk of injury to test personnel and surrounding equipment, and provide a more reliable safety protection barrier for battery short circuit testing.

[0072] See Figure 1 , Figure 5 and Figure 7 The housing 11 has a height direction Z, which is perpendicular to the auxiliary plane 200. An air inlet 102 is located on the bottom wall 1011. Along the height direction Z, the orthographic projection of the support plate 42 onto the auxiliary plane 200 covers the orthographic projection of the air inlet 102's wall onto the auxiliary plane 200. By limiting the orthographic projection of the support plate 42 onto the orthographic projection of the air inlet 102's wall, the support plate 42 can shield the air inlet 102, allowing the airflow entering the accommodating cavity 101 to diffuse evenly below the support plate 42. This prevents the battery from shifting position or changing its surface condition due to direct airflow impact. When the battery catches fire or explodes during testing, the shielding of the air inlet 102 by the support plate 42 can slow the spread of shock waves and debris through the air inlet 102, providing more reliable safety for testing equipment and personnel located outside the accommodating cavity 101.

[0073] See Figures 1-5 ,and Figures 8-9 The drive mechanism 3 includes a first guide rail 31 and a drive component 32. The first guide rail 31 is connected to the outer surface of the housing 11, and the dust hood 21 is slidably connected to the first guide rail 31. The drive component 32 is connected to the dust hood 21 and can drive the dust hood 21 to slide along the guide rail, so that the dust hood 21 covers the pressure relief hole 103. The guide rail provides precise sliding guidance for the dust hood 21, allowing the drive component 32 to accurately control the movement trajectory and position of the dust hood 21, ensuring that the dust hood 21 can quickly and accurately cover the pressure relief hole 103 under the drive of the drive component 32.

[0074] The first guide rail component 31 includes a first guide rail 311 and a second guide rail 312. The first guide rail 311 is connected to the outer surface of the housing 11, and the second guide rail 312 is connected to the outer surface of the housing 11 and is arranged opposite to the first guide rail 311. The dust hood 21 is disposed between the first guide rail 311 and the second guide rail 312. One end of the dust hood 21 is slidably connected to the first guide rail 311, and the other end is slidably connected to the second guide rail 312. The first guide rail component 31 adopts a structure in which the first guide rail 311 and the second guide rail 312 are arranged opposite to each other, which can provide a bidirectional constraint guiding mechanism for the dust hood 21. The two ends of the dust hood 21 are slidably connected to the first guide rail 311 and the second guide rail 312 respectively, so that the first guide rail component 31 can more accurately control the movement trajectory of the dust hood 21, avoid the dust hood 21 from deviating, tilting or flipping during the sliding process, and further ensure that the dust hood 21 can quickly and accurately cover the pressure relief hole 103 under the drive of the drive component 32.

[0075] In this embodiment, the driving component 32 is a driving cylinder.

[0076] In other embodiments, the drive unit 32 may also be any device capable of driving the vacuum hood 21 to move, including but not limited to electric push rods, linear motors, etc.

[0077] In this embodiment, the drive cylinder is indirectly connected to the dust collection hood 21 through the traction component 34 and indirectly drives the dust collection hood 21 to move through the traction component 34.

[0078] In some other embodiments, the drive cylinder may also be directly connected to the dust hood 21 and directly drive the dust hood 21 to move.

[0079] The driving component 32 is a driving cylinder; the driving mechanism 3 also includes a second guide rail 33 and a traction assembly 34. The second guide rail 33 is connected to the outer top surface of the housing 11. The traction assembly 34 includes a mounting base 341, a first pulley 342, a guide 343, a second pulley 344, and a traction rope 345. The mounting base 341 is connected to the outer top surface of the housing 11 and is located between the guide 343 and the dust cover 21. The first pulley 342 is connected to the mounting base 341. The guide 343 is slidably connected to the guide rail. The second pulley 344 is connected to the guide 343. The traction rope 345 is wrapped around the first pulley 342 and the second pulley 344. One end of the traction rope 345 is connected to the dust cover 21, and the other end is connected to the mounting base 341. The driving cylinder is connected to the guide 343 and can drive the guide 343 to slide along the second guide rail 33.

[0080] By employing a combination of a first pulley 342 (fixed pulley), a second pulley 344 (movable pulley), a traction rope 345, and a cylinder, the combined force-saving and distance-increasing characteristics of the movable and fixed pulleys allow the drive cylinder to achieve a greater lifting and lowering distance for the dust hood 21 with only a short stroke. Compared to traditional direct drive methods, this structure significantly reduces the space occupied by the drive mechanism 3, making it particularly suitable for the external layout of the test chamber 1 in areas with limited space. This results in a more compact overall structure of the testing device, enabling efficient operation within a limited space and improving the utilization rate of the equipment space. Furthermore, this drive method allows for flexible control of the lifting and lowering of the dust hood 21 by adjusting the movement of the cylinder, easily facilitating both rapid emergency covering in the event of an explosion and precise positional adjustments based on testing requirements.

[0081] In this embodiment, the traction rope 345 is a steel wire rope.

[0082] The second guide rail component 33 includes a third guide rail 331 and a fourth guide rail 332. The third guide rail 331 is connected to the outer top surface of the housing 11, and the fourth guide rail 332 is connected to the outer top surface of the housing 11 and is arranged opposite to the third guide rail 331. The guide component 343 is disposed between the third guide rail 331 and the fourth guide rail 332. One end of the guide component 343 is slidably connected to the third guide rail 331, and the other end is slidably connected to the fourth guide rail 332. The second guide rail 33 adopts a structure in which the third guide rail 331 and the fourth guide rail 332 are arranged opposite to each other, which can provide a bidirectional constraint guiding mechanism for the guide 343. The two ends of the guide 343 are slidably connected to the third guide rail 331 and the fourth guide rail 332 respectively, so that the second guide rail 33 can more accurately control the movement trajectory of the guide 343 and avoid the guide 343 from deviating, tilting or flipping during the sliding process. This ensures that the traction component 34 operates stably when the drive cylinder drives the guide 343 to move, and further ensures that the dust cover 21 can quickly and accurately cover the pressure relief hole 103 under the drive of the drive cylinder.

[0083] In this embodiment, there are two traction components 34, with the drive cylinder located between them. Using two traction components 34 provides a more stable traction force compared to a single traction component 34. When the drive cylinder moves the dust collection hood 21, the two traction components 34 work together to prevent the dust collection hood 21 from tilting or swaying during lifting and lowering, ensuring that the dust collection hood 21 accurately and smoothly covers the pressure relief hole 103. Even if an explosion causes airflow impact during testing, the two traction components 34 can maintain the stable movement trajectory of the dust collection hood 21 through balanced tension, improving the blocking effect of the testing device on explosion fragments and smoke, and enhancing safety protection performance.

[0084] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery short-circuit testing device, characterized in that, include: Test box (1), the test box (1) includes a box body (11) and a box door (12), the box body (11) is provided with a receiving cavity (101) for accommodating the battery, the box body (11) is rotatably connected to the box body (11) and is used to open or close the receiving cavity (101), the box body (11) is provided with an air inlet (102) and a pressure relief hole (103) communicating with the receiving cavity (101); A vacuuming mechanism (2) is provided, which includes a vacuum hood (21) and a vacuum pipe (22). The vacuum hood (21) is located on the side of the pressure relief hole (103) away from the accommodating cavity (101), and the vacuum pipe (22) is connected to the vacuum hood (21). A drive mechanism (3) is connected to the dust hood (21) and can drive the dust hood (21) to move so that the dust hood (21) covers the pressure relief hole (103).

2. The battery short-circuit testing device according to claim 1, characterized in that, It also includes a support frame (4) disposed in the accommodating cavity (101); the accommodating cavity (101) has a bottom wall (1011); the support frame (4) includes a support leg (41) and a support plate (42), one end of the support leg (41) is connected to the bottom wall (1011), and the support plate (42) is connected to the end of the support leg (41) away from the bottom wall (1011) and is used to support the battery.

3. The battery short-circuit testing device according to claim 2, characterized in that, The housing (11) has a height direction (Z), which is perpendicular to the auxiliary plane (200), and the air inlet (102) is located on the bottom wall (1011); Along the height direction (Z), the orthographic projection of the support plate (42) on the auxiliary plane (200) covers the orthographic projection of the hole wall of the air inlet (102) on the auxiliary plane (200).

4. The battery short-circuit testing device according to claim 2, characterized in that, It also includes refractory bricks (5) and asbestos (6), wherein the refractory bricks (5) are connected to the side of the support plate (42) away from the bottom wall (1011), and the asbestos (6) is connected to the side of the refractory bricks (5) away from the support plate (42).

5. The battery short-circuit testing device according to claim 1, characterized in that, It also includes an observation window (7); the box door (12) is provided with a through observation opening (121), and the observation window (7) is connected to the box door (12) and seals the observation opening (121); The housing (11) is also provided with a wire hole (104) that communicates with the accommodating cavity (101).

6. The battery short-circuit testing device according to claim 1, characterized in that, It also includes a first protective grille (8) and a second protective grille (9). The first protective grille (8) has a plurality of first grille holes (81). The first protective grille (8) is disposed in the pressure relief hole (103), and the outer wall of the first protective grille (8) is connected to the hole wall of the pressure relief hole (103). The second protective grille (9) has a plurality of second grille holes (91), the second protective grille (9) is disposed inside the air inlet (102), and the outer wall of the second protective grille (9) is connected to the hole wall of the air inlet (102).

7. The battery short-circuit testing device according to claim 1, characterized in that, The suction pipe (22) is a corrugated pipe.

8. The battery short-circuit testing device according to claim 1, characterized in that, The drive mechanism (3) includes a first guide rail (31) and a drive component (32); The first guide rail (31) is connected to the outer side of the housing (11). The dust hood (21) is slidably connected to the first guide rail (31). The drive member (32) is connected to the dust hood (21) and can drive the dust hood (21) to slide along the guide rail so that the dust hood (21) covers the pressure relief hole (103).

9. The battery short-circuit testing device according to claim 8, characterized in that, The driving component (32) is a driving cylinder; The drive mechanism (3) further includes a second guide rail (33) and a traction assembly (34). The second guide rail (33) is connected to the outer top surface of the housing (11). The traction assembly (34) includes a mounting base (341), a first pulley (342), a guide (343), a second pulley (344), and a traction rope (345). The guide (343) is slidably connected to the second guide rail (33), and the second pulley (344) is connected to the guide (343). The mounting base (341) is connected to the housing (11). 1) The outer top surface is located between the guide (343) and the dust hood (21). The first pulley (342) is connected to the mounting base (341). The traction rope (345) is wrapped around the first pulley (342) and the second pulley (344). One end of the traction rope (345) is connected to the dust hood (21) and the other end is connected to the mounting base (341). The drive cylinder is connected to the guide (343) and can drive the guide (343) to slide along the second guide rail (33).

10. The battery short-circuit testing device according to claim 1, characterized in that, The housing (11) includes a first steel plate layer (111), a steel frame layer (112), and a second steel plate layer (113). The second steel plate layer (113) is located on the side of the first steel plate layer (111) away from the accommodating cavity (101), and the steel frame layer (112) is located between the first steel plate layer (111) and the second steel plate layer (113).

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