Pressure detection device for explosion-proof shell of battery pack

Abstract

The utility model relates to the technical field of battery pack detection, in particular to a battery pack explosion-proof shell pressure detection device, which comprises a rack, a detection platform is arranged at the bottom end of the rack, a lifting seat is driven at the bottom of a top plate of the rack through a hydraulic cylinder, and a test mounting seat is arranged at the bottom of the lifting seat. A plurality of intelligent pressure testing units with positions capable of being adjusted independently are arranged on the testing installation seat, and each intelligent pressure testing unit is composed of a pressure contact module, a precision displacement actuator and a position feedback sensor. And a sealing test mechanism composed of a fixed sealing frame and an adjustable sealing frame is arranged outside the lifting seat. According to the pressure detection device for the explosion-proof shell of the battery pack, uniform pressure application to the explosion-proof shell of a special-shaped structure is realized, an actual use environment is more accurately simulated, a more reliable and real test result is provided, and the detection precision and applicability are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack detection technical field, concretely is a kind of battery pack explosion-proof housing pressure detection device. BACKGROUND

[0002] With the development of new energy technology, battery pack is applied more and more widely in electric vehicles, energy storage systems and portable electronic devices and other fields. As one of the core components of these applications, the safety of battery pack is directly related to the overall safety of the product and user experience. In order to ensure the stable operation of battery pack under various environmental conditions, the design of its shell not only needs to have good sealing performance, but also needs to be able to withstand certain internal and external pressure changes. Therefore, strict pressure testing of battery pack explosion-proof housing is a key link to ensure product safety.

[0003] At present, the common battery pack explosion-proof housing pressure detection method mostly uses traditional circular or square pressure vessels for static pressure testing. Although this method can preliminarily judge the pressure resistance of the shell, it has limitations in simulating real use scenarios, especially for some explosion-proof housings with special-shaped structure design to adapt to special installation space requirements. The traditional detection method cannot accurately reflect the actual performance of the explosion-proof housing under non-uniform stress conditions, resulting in possible deviation between the test results and actual use, which affects the evaluation of the real performance of the explosion-proof housing. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a kind of battery pack explosion-proof housing pressure detection device to solve the problem that the common battery pack explosion-proof housing pressure detection method at present is difficult to accurately evaluate the actual performance of special-shaped structure explosion-proof housing under non-uniform stress conditions proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of battery pack explosion-proof housing pressure detection device, including rack, the bottom end of the rack is equipped with detection platform, the bottom of the top plate of the rack is driven with lifting seat by hydraulic cylinder, the bottom of the lifting seat is equipped with test mounting seat, the test mounting seat is equipped with several intelligent pressure test units that can independently adjust position, each group of the intelligent pressure test unit is composed of pressure contact module, precision displacement actuator and position feedback sensor, and the outside of the lifting seat is equipped with sealing test mechanism composed of fixed sealing frame and adjustable sealing frame.

[0006] Preferably, the inside of the test mounting seat is provided with a movable groove, and the inner ends of the pressure contact modules are movably inserted into the movable groove inside the test mounting seat, the precise displacement actuators are uniformly arranged on the outer wall of the test mounting seat and the output ends thereof are fixedly connected with the outer ends of the corresponding pressure contact modules, and the position feedback sensors are arranged on the outer ends of the pressure contact modules and connected with the precise displacement actuators through wires.

[0007] Preferably, the inside of the bottom end of the lifting seat is provided with a rotator through a notch, and the output end of the rotator is fixedly connected with the top of the test mounting seat.

[0008] Preferably, the center of the top end of the fixed sealing frame is provided with a connecting sleeve matched with the lifting seat structure, and the two sides of the top end of the connecting sleeve are connected with locking bolts through threaded structures.

[0009] Preferably, the middle of the top of the adjustable sealing frame is provided with a positioning ring, the inside of the positioning ring is inserted with a positioning rod, and the adjacent end of the positioning rod is fixedly connected with the outer wall of the connecting sleeve.

[0010] Preferably, the inside of the top end of the adjustable sealing frame is provided with a pulling part, the outer end of the pulling part is provided with a guide block, and the two sides of the inner wall of the top of the fixed sealing frame are provided with transverse guide grooves matched with the guide blocks.

[0011] Compared with the prior art, the battery explosion-proof shell pressure detection device realizes uniform pressure exertion on the special-shaped structure explosion-proof shell, more accurately simulates the actual use environment, provides more reliable and real test results, and significantly improves the precision and applicability of detection. The device is provided with a plurality of intelligent pressure test units with independently adjustable positions on the test mounting seat, each intelligent pressure test unit is matched with a pressure contact module, a precise displacement actuator and a position feedback sensor, thereby ensuring accurate control and stability during pressure exertion, and the sealing test mechanism is matched with a fixed sealing frame and an adjustable sealing frame, thereby ensuring complete sealing of the test environment. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structural schematic view of the battery explosion-proof shell pressure detection device.

[0013] Fig. 2 It is a structural schematic view of the lifting seat and the test mounting seat of the battery explosion-proof shell pressure detection device.

[0014] Fig. 3 It is a top view structural schematic view of the lifting seat of the battery explosion-proof shell pressure detection device.

[0015] In the figure: 1, rack; 2, detection platform; 3, lifting seat; 4, test mounting seat; 5, intelligent pressure test unit; 51, pressure contact module; 52, precise displacement executor; 53, position feedback sensor; 6, sealing test mechanism; 61, fixed sealing frame; 62, adjustable sealing frame; 7, positioning ring; 8, positioning rod; 9, rotator; 10, connecting sleeve; 11, guide block; 12, pull part. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] Please refer to Figs. 1-3The utility model provides a technical scheme: a battery pack explosion -proof housing pressure detection device, including frame 1, the bottom of frame 1 is equipped with detection platform 2, the top plate bottom of frame 1 is driven with lifting seat 3 through hydraulic cylinder, the bottom of lifting seat 3 is equipped with test mounting seat 4, a plurality of independent adjustable position's intelligent pressure test unit 5 are equipped on test mounting seat 4, and each group of intelligent pressure test unit 5 is composed of pressure contact module 51, precision displacement executor 52 and position feedback sensor 53, precision displacement executor 52 adopts SMC NB series small -size cylinder, and position feedback sensor 53 adopts Turck BL60 series inductive displacement sensor, and the outside of lifting seat 3 is equipped with the sealing test mechanism 6 that is jointly constituted by fixed sealing frame 61 and adjustable sealing frame 62, adjustable sealing frame 62 is equipped with two and is flexibly telescopic in the both sides of fixed sealing frame 61, the detection platform 2 of this structure is used to bear and firmly place the battery pack explosion -proof housing of measuring, when the hydraulic cylinder on frame 1 drives lifting seat 3 to go up and down, test mounting seat 4 is accurately positioned to the top of the battery pack explosion -proof housing of measuring, and the pressure contact module 51 on intelligent pressure test unit 5 is contacted with the surface of explosion -proof housing under the action of precision displacement executor 52, and independently adjusts position as needed to adapt to the shell of special shape structure, realizes the pressure exertion to different shape and size shell, and position feedback sensor 53 real -time monitoring and feedback pressure contact module 51's position information to precision displacement executor 52, ensures the accuracy and stability of pressure exertion, simultaneously, sealing test mechanism 6 is closely fitted to the shell edge in the testing process through fixed sealing frame 61 and adjustable sealing frame 62 cooperation, prevents the outside air or liquid from entering and influences test result, also avoids internal pressure leakage, ensures the airtightness of test environment, thereby make the device realize the uniform pressure exertion to special shape structure explosion -proof housing, can more accurately simulate the stress condition in actual use environment, especially the performance of shell under non -uniform stress condition, improves the reliability and authenticity of test result, solves the problem that the anti -pressure performance of special design explosion -proof housing is difficult to accurately evaluate in prior art, significantly improves the precision and application scope of detection, the inside of test mounting seat 4 is equipped with movable groove, and the inner end of pressure contact module 51 all flexibly extends in the movable groove inside test mounting seat 4, and precision displacement executor 52 is evenly installed on the outer wall of test mounting seat 4 and its output end is fixedly connected with the outer end of corresponding pressure contact module 51, and position feedback sensor 53 is installed on the outer end of pressure contact module 51 and is connected with precision displacement executor 52 through wire, the precision displacement executor 52 of this structure accurately adjusts the position of pressure contact module 51 according to control instruction, makes it can flexibly adapt to the surface of shell of different shape and size, ensures the uniformity and accuracy of pressure exertion, and position feedback sensor 53 real -time monitoring and feedback pressure contact module 51's position information to precision displacement executor 52, forms closed -loop control system, guarantees the high accuracy and stability in the pressure exertion process,Thus, the precise pressure is applied to the special-shaped structure explosion-proof shell, and the stability and reliability of the entire detection process are improved through the close linkage between the parts. The inside of the bottom end of the lifting seat 3 is fixedly installed with a rotator 9 through a notch, and the output end of the rotator 9 is fixedly connected with the top of the test mounting seat 4. The rotator 9 of this structure can accurately adjust the angle and position of the test mounting seat 4 as needed, not only enhancing the flexibility and adaptability of the device, but also allowing the explosion-proof shell to be comprehensively detected from different directions, further improving the comprehensiveness and accuracy of the test results. A connecting sleeve 10 matched with the structure of the lifting seat 3 is arranged at the center of the top end of the fixed sealing frame 61, and locking bolts are connected to the top end of the connecting sleeve 10 on both sides through a threaded structure. When the sealing test mechanism 6 needs to be installed or disassembled, the operator can release the connection between the fixed sealing frame 61 and the lifting seat 3 by loosening the locking bolts on the connecting sleeve 10, so that the entire sealing test mechanism 6 can be quickly and conveniently disassembled from the device. The top of the adjustable sealing frame 62 is welded and fixed with a positioning ring 7, and the positioning ring 7 is connected with a fixing screw through a threaded structure. The inside of the adjustable sealing frame 62 is provided with a pulling part 12, and the outer end of the pulling part 12 is provided with a guide block 11. The inside of the top end of the adjustable sealing frame 62 is provided with a pulling part 12, and the outer end of the pulling part 12 is provided with a guide block 11. Both sides of the inner wall of the fixed sealing frame 61 are provided with horizontal guide grooves matched with the guide blocks 11. The adjustable sealing frame 62 can be flexibly adjusted with the fixed sealing frame 61 through the pulling part 12 arranged at the top end of the adjustable sealing frame 62. When the position of the adjustable sealing frame 62 needs to be adjusted, the operator can slide the pulling part 12 along the horizontal guide grooves on both sides of the fixed sealing frame 61, so that the guide block 11 moves smoothly in the guide groove. In this way, the adjustable sealing frame 62 is accurately adjusted horizontally on both sides of the fixed sealing frame 61, and the positioning ring 7 slides along the outside of the positioning rod 8 when the adjustable sealing frame 62 is adjusted, until the adjustable sealing frame 62 is adjusted to the appropriate position. The positioning ring 7 is locked and fixed on the positioning rod 8 through the fixing screw, so that the fixed sealing frame 61 and the adjustable sealing frame 62 are adjusted in cooperation to seal the space, ensuring that it can tightly fit the edges of explosion-proof shells of different sizes and shapes to form a completely sealed test environment.

[0018] Working principle: when using the battery explosion-proof shell pressure detection device, first, the battery explosion-proof shell to be detected is placed on the detection platform 2, then the operator slides the pull part 12 on the adjustable sealing frame 62 along the horizontal guide groove on both sides of the fixed sealing frame 61, so that the guide block 11 moves smoothly in the guide groove, thereby realizing the accurate horizontal adjustment of the adjustable sealing frame 62 on both sides of the fixed sealing frame 61, in the adjustment process, the adjustable sealing frame 62 drives the positioning ring 7 to slide along the outside of the positioning rod 8 until it reaches the appropriate position, then the positioning rod 8 is locked and fixed through the fixing screw on the positioning ring 7, then the hydraulic cylinder on the rack 1 drives the lifting seat 3 to descend, so that the test mounting seat 4 is accurately positioned above the explosion-proof shell, at this time, the rotator 9 adjusts the angle and position of the test mounting seat 4 according to the needs, a plurality of intelligent pressure test units 5 on the test mounting seat 4 start to work, the precise displacement actuator 52 accurately adjusts the position of the pressure contact module 51 according to the control instruction, so that it can flexibly adapt to different shapes and sizes of the surface of the explosion-proof shell, the position feedback sensor 53 monitors and feeds back the position information of the pressure contact module 51 in real time, forming a closed-loop control system, the intelligent pressure test unit 5 applies uniform pressure to the explosion-proof shell according to the predetermined program, simulates the stress condition in the actual use environment, after the test is completed, the hydraulic cylinder drives the lifting seat 3 to rise, and the contact between the test mounting seat 4 and the explosion-proof shell is released, thereby completing a series of work.

[0019] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A battery explosion-proof shell pressure detection device, comprising a rack (1), the bottom end of the rack (1) is provided with a detection platform (2), characterized in that: The top of the rack (1) is driven by a hydraulic cylinder to lift the seat (3), the bottom of the seat (3) is provided with a test mounting seat (4), the test mounting seat (4) is provided with a plurality of intelligent pressure test units (5) which can independently adjust the position, each group of the intelligent pressure test unit (5) is composed of a pressure contact module (51), a precision displacement actuator (52) and a position feedback sensor (53), and the outside of the seat (3) is provided with a sealing test mechanism (6) composed of a fixed sealing frame (61) and an adjustable sealing frame (62).

2. The battery explosion-proof housing pressure detection device according to claim 1, characterized in that: The inside of the test mounting seat (4) is provided with a movable groove, and the inner end of the pressure contact module (51) is movably inserted into the movable groove inside the test mounting seat (4), the precision displacement actuator (52) is uniformly installed on the outer wall of the test mounting seat (4) and the output end thereof is fixedly connected with the outer end of the corresponding pressure contact module (51), and the position feedback sensor (53) is installed on the outer end of the pressure contact module (51) and connected with the precision displacement actuator (52) through wires.

3. The battery explosion-proof housing pressure detection device according to claim 1, wherein: The inside of the bottom end of the seat (3) is provided with a rotator (9) through a notch, and the output end of the rotator (9) is fixedly connected with the top of the test mounting seat (4).

4. The battery explosion-proof housing pressure detection device according to claim 1, characterized in that: The center of the top end of the fixed sealing frame (61) is provided with a connecting sleeve (10) matched with the structure of the seat (3), and the two sides of the top end of the connecting sleeve (10) are connected with locking bolts through a threaded structure.

5. The battery explosion-proof housing pressure detection device according to claim 4, characterized in that: The middle of the top of the adjustable sealing frame (62) is provided with a positioning ring (7), the inside of the positioning ring (7) is inserted with a positioning rod (8), and the adjacent end of the positioning rod (8) is fixedly connected with the outer wall of the connecting sleeve (10).

6. The battery explosion-proof housing pressure detection device according to claim 1, wherein: The inside of the top end of the adjustable sealing frame (62) is provided with a pulling part (12), the outer end of the pulling part (12) is provided with a guide block (11), and the two sides of the inner wall of the top of the fixed sealing frame (61) are provided with transverse guide grooves matched with the guide block (11).

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