Testing device used after BMS battery management system assembly

Abstract

The invention discloses a testing device for an assembled BMS battery management system, which is applied to the technical field of battery management systems, and comprises a testing machine table, one side of the testing machine table is provided with a pick-and-place window, and one side, close to the pick-and-place window, of the outside of the testing machine table is in bolted connection with a supporting seat; a placement mechanism and a detection mechanism which are used in cooperation with each other are installed in the testing machine table. The pushing platform is driven to slide in the testing machine table, so that the battery can be automatically conveyed into the testing machine table, and the sealing partition plate is put down to seal the taking and placing window. And meanwhile, the sealing partition plate can be opened upwards to synchronously drive the pushing platform to push out the battery. Therefore, the battery can be conveniently and quickly placed into the test bin for a sealed heating and pressurizing test, meanwhile, the sealing performance can be ensured, the battery can be conveniently and quickly taken out, and the test efficiency after the BMS battery management system is assembled is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery management systems, and in particular relates to a test device for an assembled BMS battery management system. Background Art

[0002] The BMS battery management system is the link between the battery and the user. Its main purpose is to improve the battery utilization rate and prevent the battery from overcharging and over-discharging. It is an important component of electric vehicle power batteries.

[0003] At present, the Chinese invention with the publication number of CN116338264B discloses a battery test explosion-proof box including a test cabinet and a test box. Most of the existing BMS test functions are based on the test and verification of simulated battery packs. The voltage of the battery cell is simulated by a high-precision programmable battery simulator, and it has a certain current output and absorption capacity to simulate the discharge and charging process. However, in the actual use of the battery, there will be a high temperature and high pressure use environment. The test work after the assembly of the existing BMS battery management system requires the battery to be placed in a sealed cabin and then the cabin is heated and pressurized before testing. However, it is troublesome to put the battery into the cabin. After the battery is placed, it is difficult to seal it quickly. The preparation work before the test link is cumbersome, which affects the efficiency of the test after the BMS battery management system is assembled. In addition, when the probe contacts the battery electrode during the test, it will directly feedback the battery voltage operating state. In the state of temperature increase, the battery voltage will also have a certain change. The existing test device cannot effectively detect the different temperatures and pressures in the process of battery heating and pressurization. Therefore, the test data results are quite different and cannot meet the test requirements. Summary of the invention

[0004] The purpose of the present invention is to provide a test device for a BMS battery management system after assembly, which has the advantages of quickly placing the battery into a test chamber for a sealed temperature and pressure test and facilitating comparison of the results of battery tests at different temperatures and pressures.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: a test device for a BMS battery management system after assembly, comprising a test machine, a pick-and-place window is provided on one side of the test machine, a support seat is bolted to the side of the outside of the test machine close to the pick-and-place window, and a placement mechanism and a detection mechanism that cooperate with each other are installed inside the test machine.

[0006] By adopting the above technical solution, by driving the pushing platform to slide inside the test machine, the battery can be automatically transported to the inside of the test machine and the sealing partition can be lowered to seal the access window. At the same time, the sealing partition can be opened upwards, and the pushing platform can be driven to push the battery out synchronously. This makes it convenient to quickly place the battery into the test chamber for a sealed temperature increase and pressurization test, while ensuring the sealing and facilitating the rapid removal of the battery, thereby improving the test efficiency of the BMS battery management system after assembly. After the battery is moved to the inside of the test machine by the pushing platform, the lifting platform can be automatically lowered. Then, the sliding ball slides inside the wave groove to move the sliding plate up and down, and the battery is tested multiple times. Therefore, during the temperature increase and pressurization process, different charging and discharging operating state data can be tested, which is convenient for comparing the operating data under different temperatures and pressures.

[0007] The present invention is further configured as follows: the placement mechanism includes a first motor bolted to the bottom of a support seat, the output end of the first motor is bolted to a first connecting shaft, the interior of the support seat is rotatably connected to a threaded shaft rotatably connected to a test machine, the threaded shaft and one end of the first connecting shaft close to the first motor are both bolted to a first synchronous wheel, the surfaces of the two first synchronous wheels are transmission sleeved with a first synchronous belt, the top of the support seat is slidably connected to a pushing platform slidably connected to the test machine, and the bottom of the pushing platform is bolted to a threaded sleeve threadedly sleeved to the surface of the threaded shaft.

[0008] The above technical solution makes it easy to quickly put the battery into the test chamber for sealed temperature and pressure test and take it out.

[0009] The present invention is further configured as follows: a first disc gear is bolted to one end of the first connecting shaft away from the first motor, second disc gears rotatably connected to the test machine are arranged on both sides of the first connecting shaft, the top and bottom of the first disc gear are meshed with linear racks respectively meshed with two second disc gears, the linear racks are slidably connected to the inside of the test machine, a winding wheel is bolted to one end of the second disc gear close to the first motor, a sealing baffle used in conjunction with the picking and placing window is slidably connected to the side of the inner wall of the test machine close to the picking and placing window, a pull-back rope fixedly wound around the surface of the winding wheel is fixedly connected to both sides of the bottom of the sealing baffle, and a first spring bolted to the test machine is fixedly connected to both sides of the top of the sealing baffle.

[0010] By adopting the above technical solution, when the battery is placed in the test chamber for testing, the sealing partition can be lowered to seal the access window.

[0011] The present invention is further configured as follows: the detection mechanism includes a second connecting shaft rotatably connected to the top of the inner cavity of the test machine, the second connecting shaft and the end of the threaded shaft away from the first motor are bolted to a second synchronous wheel, the surface transmission sleeve of the second synchronous wheel is connected to a second synchronous belt, the end of the second connecting shaft away from the second synchronous wheel is bolted to a first bevel gear, the end of the first bevel gear away from the second connecting shaft is meshed with a second bevel gear rotatably connected to the test machine, a threaded sleeve rod is welded to the bottom of the second bevel gear, the surface of the threaded sleeve rod is threadedly sleeved with a threaded sleeve, the bottom of the threaded sleeve is bolted to a lifting platform used in conjunction with the pushing platform, positioning rods are bolted to both sides of the lifting platform, and limiting sleeves that are slidably connected to the positioning rods are bolted to both sides of the inside of the test machine.

[0012] By adopting the above technical solution, after the pushing platform drives the battery to move into the testing machine, the lifting platform can be automatically lowered.

[0013] The present invention is further configured as follows: a sliding plate is slidably connected inside the lifting platform, a second motor is bolted to the top of the test machine, an output end of the second motor is bolted to an output shaft that is rotatably connected to the test machine, a second bevel gear and a threaded sleeve rod, a diamond slide bar is slidably connected inside the output shaft, a rotating column slidably connected to the inside of the sliding plate is bolted to the bottom of the diamond slide bar, a second spring bolted to the inside of the lifting platform is fixedly connected on both sides of the top and bottom of the sliding plate, a wave groove is provided on the surface of the rotating column, and sliding balls slidably connected to the wave groove are rotatably connected on both sides of the inside of the sliding plate.

[0014] By adopting the above technical solution, the sliding plate can be moved up and down to perform multiple tests on the battery.

[0015] The present invention is further configured as follows: an anti-slip bar is welded on the top of the pushing platform.

[0016] By adopting the above technical solution, the friction of the battery placed on the top is improved, thereby increasing stability.

[0017] The present invention is further configured as follows: a plunger plate slidably connected to a support seat is welded to the bottom of the sealing partition, and a sealing gasket is bonded to the bottom of the sealing partition.

[0018] The above technical solution is adopted to improve the sealing performance, and at the same time, the slide groove inside the support seat is blocked to prevent gas from escaping and reduce the internal air pressure of the test machine.

[0019] The present invention is further configured as follows: a pressurized window is fixedly connected to one side of the interior of the test machine, an electric heating rod is bolted to the interior of the pressurized window, a pressurized pump bolted to the test machine is provided at the bottom of the pressurized window, an output end of the pressurized pump is bolted to a pressurizing pipe fixedly connected to the bottom of the pressurized window, and an input end of the pressurized pump passes through the interior of the test machine and is connected to the outside world.

[0020] By adopting the above technical solution, the booster pump is turned on to suck clean air and transported to the inside of the booster window through the booster pipe. When the air is discharged into the inside of the test machine through the booster window, the air is heated by an electric heating rod, thereby increasing the temperature and pressurization of the inside of the test machine.

[0021] The present invention is further configured as follows: observation windows are opened and bolted on both sides of the exterior of the test machine, universal wheels are bolted on four corners of the bottom of the test machine, and a locker is installed on one side of the universal wheel.

[0022] By adopting the above technical solution, the observation window can be set to facilitate observation of the test status of the battery inside the test machine. The universal wheels can be set to facilitate the movement of the test equipment, and the position can also be fixed by a lock.

[0023] The present invention is further configured as follows: a filter screen is bolted to one end of the pressurized window close to the inside of the test machine, an inspection door is bolted to the other side outside the test machine, and a ventilation grille is provided inside the inspection door.

[0024] By adopting the above technical solution, the filter can prevent dust and impurities inside the test machine from entering the inside of the pressurized window, and prevent the pressurized pump from sucking foreign impurities into the test machine. The inspection door and ventilation grille can be easily opened to repair and replace parts.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. By driving the push platform to slide inside the test machine, the battery can be automatically transported to the inside of the test machine and the sealing partition can be lowered to seal the access window. At the same time, the sealing partition can be opened upwards, and the push platform can be driven to push the battery out. This makes it easier to quickly put the battery into the test chamber for sealed temperature increase and pressure test, while ensuring the sealing and facilitating the rapid removal of the battery, thereby improving the test efficiency of the BMS battery management system after assembly;

[0027] 2. After the battery is moved to the inside of the test machine by the push platform, the lifting platform can be automatically lowered. Then the sliding ball slides inside the wave groove to move the sliding plate up and down to test the battery multiple times. In this way, different charging and discharging operating state data can be tested during the temperature increase and pressure increase process, which is convenient for comparing the operating data under different temperatures and pressures. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0031] Figure 4 It is a schematic diagram of the local structure of the placement mechanism of the present invention;

[0032] Figure 5 It is a partial structural sectional view of the detection mechanism of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the rotating column of the present invention;

[0034] Figure 7 It is a schematic diagram of the pressurized window structure of the present invention.

[0035] Figure numerals: 1, test machine; 2, pick-and-place window; 3, support seat; 4, placement mechanism; 401, first motor; 402, threaded shaft; 403, first synchronous wheel; 404, first synchronous belt; 405, push platform; 406, threaded sleeve; 407, first connecting shaft; 408, first disc gear; 409, second disc gear; 410, winding wheel; 411, linear rack; 412, pull-back rope; 413, sealing partition; 414, first spring; 5, detection mechanism; 501, second connecting shaft; 502, second synchronous wheel; 503, second synchronous belt; 504, first bevel gear; 505, second Bevel gear; 506, threaded sleeve; 507, lifting platform; 508, threaded sleeve; 509, second motor; 510, output shaft; 511, diamond slide bar; 512, rotating column; 513, sliding plate; 514, second spring; 515, test probe; 516, wave groove; 517, sliding ball; 518, positioning rod; 519, limiting sliding sleeve; 6, anti-slip bar; 7, sealing gasket; 8, plunger plate; 9, pressurization window; 10, pressurization pump; 11, booster pipe; 12, electric heating rod; 13, filter screen; 14, observation window; 15, inspection door; 16, ventilation grille; 17, universal wheel; 18, lock. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0037] Embodiment 1:

[0038] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , a test device for a BMS battery management system after assembly, including a test machine 1, a pick-and-place window 2 is provided on one side of the test machine 1, a support seat 3 is bolted to the side of the outside of the test machine 1 near the pick-and-place window 2, and a placement mechanism 4 and a detection mechanism 5 are installed inside the test machine 1 respectively, which cooperate with each other. By driving the push platform 405 to slide inside the test machine 1, the battery can be automatically transported to the inside of the test machine 1 and the sealing partition 413 can be lowered to seal the pick-and-place window 2. At the same time, the sealing partition 413 can be opened upward, and synchronously drive the pushing platform 405 to push the battery out. This makes it easy to quickly put the battery into the test chamber for a sealed temperature increase and pressure test, while ensuring the sealing and facilitating the rapid removal of the battery, thereby improving the test efficiency of the BMS battery management system after assembly.

[0039] refer to Figure 2 , Figure 3 The placement mechanism 4 includes a first motor 401 bolted to the bottom of the support seat 3, a first connecting shaft 407 bolted to the output end of the first motor 401, a threaded shaft 402 rotatably connected to the test bench 1 is internally rotatably connected to the support seat 3, a first synchronous wheel 403 is bolted to the ends of the threaded shaft 402 and the first connecting shaft 407 close to the first motor 401, the surfaces of the two first synchronous wheels 403 are driven with first synchronous belts 404, a push platform 405 slidably connected to the top of the support seat 3 is slidably connected to the test bench 1, and a threaded sleeve 406 threadedly sleeved to the surface of the threaded shaft 402 is bolted to the bottom of the push platform 405. It is convenient to quickly put the battery into the test chamber for sealing temperature increase and pressure test and take it out.

[0040] refer to Figure 3 , Figure 4, the end of the first connecting shaft 407 away from the first motor 401 is bolted with a first disc gear 408, and the two sides of the first connecting shaft 407 are provided with second disc gears 409 rotatably connected to the test platform 1, and the top and bottom of the first disc gear 408 are meshed with linear racks 411 respectively meshed with the two second disc gears 409, and the linear racks 411 are slidably connected to the inside of the test platform 1, and the end of the second disc gear 409 close to the first motor 401 is bolted with a reel 410, and the inner wall of the test platform 1 close to the access window 2 is slidably connected with a sealing partition 413 used in conjunction with the access window 2, and the two sides of the bottom of the sealing partition 413 are fixedly connected with a pull-back rope 412 fixedly wound around the surface of the reel 410, and the two sides of the top of the sealing partition 413 are fixedly connected with a first spring 414 bolted to the test platform 1. When the battery is placed in the test chamber for testing, the sealing partition 413 can be lowered to seal the access window 2.

[0041] refer to Figure 2 , Figure 3 The top of the push platform 405 is welded with an anti-slip bar 6 to increase the friction of the battery placed on the top and increase stability.

[0042] refer to Figure 1 , Figure 4 The bottom of the sealing partition 413 is welded with a plunger plate 8 that is slidably connected to the support seat 3, and the bottom of the sealing partition 413 is bonded with a sealing gasket 7. The sealing is improved, and the slide groove inside the support seat 3 is blocked to prevent gas from escaping and reduce the internal air pressure of the test machine 1.

[0043] refer to Figure 1 , Figure 2 , both sides of the outside of the test platform 1 are opened and bolted with observation windows 14, and the four corners of the bottom of the test platform 1 are bolted with universal wheels 17, and a locker 18 is installed on one side of the universal wheel 17. The observation window 14 can be set to facilitate observation of the test status of the battery inside the test platform 1. The universal wheel 17 can facilitate the position movement of the test equipment, and can also be fixed in position through the locker 18.

[0044] Brief description of the use process: By turning on the first motor 401 to drive the first connecting shaft 407 to rotate, the first connecting shaft 407 drives the threaded shaft 402 to rotate synchronously under the transmission of the first synchronous belt 404 and the first synchronous wheel 403. Then, the threaded shaft 402 is threadedly engaged with the threaded sleeve 406, thereby driving the push platform 405 to slide outward inside the test machine 1. At this time, the first connecting shaft 407 rotates to drive the first disc gear 408 to rotate and engage with the linear rack 411, so that the linear rack 411 slides inside the test machine 1 and engages with the second disc gear 409, so that the second disc gear 409 drives the winding wheel 410 to rotate and release the back pull rope 412 wound on the surface, so that the sealing partition 413 can slide upward through the return force of the first spring 414, and the inside of the access window 2 is opened, so that the push platform 405 can slide through the access window 2 to the inside of the support seat 3. Then, the battery is placed on the top of the pushing platform 405, and the first motor 401 is turned on to rotate in the reverse direction, thereby driving the pushing platform 405 to reset and slide into the interior of the test machine 1, and the winding wheel 410 will rotate again to wind up the pull-back rope 412, so that the sealing partition 413 slides downward to block the access window 2, and the interior of the test machine 1 is sealed.

[0045] Embodiment 2:

[0046] refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , a test device for assembled BMS battery management system, including a test machine 1, a pick-and-place window 2 is opened on one side of the test machine 1, a support seat 3 is bolted to the side of the outside of the test machine 1 close to the pick-and-place window 2, and a placement mechanism 4 and a detection mechanism 5 that cooperate with each other are installed inside the test machine 1. After the battery is driven to move to the inside of the test machine 1 by the pushing platform 405, the lifting platform 507 can be lowered automatically. Then, the sliding ball 517 slides inside the wave groove 516 to move the sliding plate 513 up and down, and the battery is tested multiple times. Therefore, during the process of heating and pressurizing, different charging and discharging operating state data can be tested, which is convenient for comparing the operating data under different temperatures and pressures.

[0047] refer to Figure 2 , Figure 3 , Figure 5The detection mechanism 5 includes a second connecting shaft 501 rotatably connected to the top of the inner cavity of the test machine 1, the second connecting shaft 501 and the end of the threaded shaft 402 away from the first motor 401 are both bolted with a second synchronous wheel 502, the surface of the second synchronous wheel 502 is driven by a second synchronous belt 503, the end of the second connecting shaft 501 away from the second synchronous wheel 502 is bolted with a first bevel gear 504, the end of the first bevel gear 504 away from the second connecting shaft 501 is meshed with a second bevel gear 505 rotatably connected to the test machine 1, a threaded sleeve 506 is welded to the bottom of the second bevel gear 505, the surface of the threaded sleeve 506 is threadedly sleeved with a threaded sleeve 508, the bottom of the threaded sleeve 508 is bolted with a lifting platform 507 used in conjunction with the pushing platform 405, both sides of the lifting platform 507 are bolted with positioning rods 518, and both sides of the inside of the test machine 1 are bolted with limit sleeves 519 that penetrate and slide through the positioning rod 518. After the pushing platform 405 drives the battery to move into the testing machine 1, the lifting platform 507 can be automatically lowered.

[0048] refer to Figure 3 , Figure 5 , Figure 6 , the lifting platform 507 is internally slidably connected with a sliding plate 513, the top of the test platform 1 is bolted with a second motor 509, the output end of the second motor 509 is bolted with an output shaft 510 that penetrates and rotates with the test platform 1 and the second bevel gear 505 and the threaded sleeve 506, the output shaft 510 is internally slidably connected with a diamond slide bar 511, the bottom of the diamond slide bar 511 is bolted with a rotating column 512 that is slidably connected with the inside of the sliding plate 513, the top and bottom sides of the sliding plate 513 are fixedly connected with a second spring 514 that is bolted with the inside of the lifting platform 507, the surface of the rotating column 512 is provided with a wave groove 516, and the inside of the sliding plate 513 is rotatably connected with sliding balls 517 that are slidably connected with the wave groove 516. The sliding plate 513 can move up and down to perform multiple tests on the battery.

[0049] refer to Figure 2 , Figure 7 A pressurized window 9 is fixedly connected to one side of the interior of the test machine 1, an electric heating rod 12 is bolted to the interior of the pressurized window 9, a pressurized pump 10 bolted to the test machine 1 is provided at the bottom of the pressurized window 9, a pressurized pipe 11 fixedly connected to the bottom of the pressurized window 9 is bolted to the output end of the pressurized pump 10, and the input end of the pressurized pump 10 passes through the interior of the test machine 1 and is connected to the outside. The pressurized pump 10 is turned on to suck clean air and transport it to the interior of the pressurized window 9 through the pressurized pipe 11. When the air is discharged into the interior of the test machine 1 through the pressurized window 9, the electric heating rod 12 is used to heat the air, thereby increasing the temperature and pressurizing the interior of the test machine 1.

[0050] refer to Figure 1 , Figure 2 , Figure 7 The end of the pressurization window 9 near the inside of the test machine 1 is bolted with a filter 13, and the other side of the outside of the test machine 1 is bolted with an inspection door 15, and a ventilation grille 16 is provided inside the inspection door 15. The filter 13 can prevent dust and impurities inside the test machine 1 from entering the inside of the pressurization window 9, and prevent the pressurization pump 10 from sucking foreign impurities into the inside of the test machine 1. The inspection door 15 and the ventilation grille 16 can facilitate opening the inside of the test machine 1 for maintenance and replacement of parts.

[0051] Brief description of the use process: When the first motor 401 drives the threaded shaft 402 to rotate, the second synchronous wheel 502 and the first synchronous wheel 403 are used to drive the second connecting shaft 501, so that the second connecting shaft 501 and the threaded shaft 402 rotate synchronously. Then, the second connecting shaft 501 rotates to drive the first bevel gear 504 to mesh with the second bevel gear 505, thereby driving the threaded sleeve 506 at the bottom to rotate and engage with the threaded sleeve 508, and the positioning rod 518 slides on the surface of the limiting sliding sleeve 519 to limit the lifting platform 507, so that when the push platform 405 slides into the interior of the test machine 1, the threaded sleeve 508 drives the lifting platform 507 to move downward to move the lifting platform 507 to the top of the battery to cover and protect the top of the battery. Afterwards, the second motor 509 is turned on to drive the output shaft 510 to rotate. Since the diamond slide bar 511 is diamond-shaped, the lifting platform 507 can drive the diamond slide bar 511 to slide inside the output shaft 510 when sliding up and down. At the same time, the output shaft 510 can drive the diamond slide bar 511 to rotate, so that the rotating column 512 rotates inside the sliding plate 513, and slides inside the wave groove 516 through the sliding ball 517. When the rotating column 512 rotates, the sliding plate 513 slides up and down due to the force of the wave groove 516 and the sliding ball 517, and is reset by the second spring 514, so that the test probe 515 can contact the electrode of the battery to perform contact simulation discharge and charging process tests, and can slide back and forth up and down at the same time, so that the test probe 515 continuously touches the electrode to test the operating status of the battery under different temperatures and pressures during the heating and pressurization process.

[0052] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A test device for a BMS battery management system after assembly, comprising a test machine (1), characterized in that: A pick-up and placement window (2) is provided on one side of the test machine (1), a support seat (3) is bolted to the outside of the test machine (1) on one side close to the pick-up and placement window (2), and a placement mechanism (4) and a detection mechanism (5) are installed inside the test machine (1) for use in coordination with each other.

2. A test device for assembled BMS battery management system according to claim 1, characterized in that: The placement mechanism (4) comprises a first motor (401) bolted to the bottom of the support seat (3); the output end of the first motor (401) is bolted to a first connecting shaft (407); the inside of the support seat (3) is rotatably connected to a threaded shaft (402) rotatably connected to the test machine (1); the threaded shaft (402) and the first connecting shaft (407) are both bolted to a first synchronous wheel (403) at one end close to the first motor (401); the surfaces of the two first synchronous wheels (403) are transmission sleeved with a first synchronous belt (404); the top of the support seat (3) is slidably connected to a pushing platform (405) slidably connected to the test machine (1); the bottom of the pushing platform (405) is bolted to a threaded sleeve (406) threadedly sleeved on the surface of the threaded shaft (402).

3. A test device for assembled BMS battery management system according to claim 2, characterized in that: The first connecting shaft (407) is bolted to one end away from the first motor (401) with a first disc gear (408); second disc gears (409) rotatably connected to the test machine (1) are arranged on both sides of the first connecting shaft (407); the top and bottom of the first disc gear (408) are meshed with linear racks (411) respectively meshed with two second disc gears (409); the linear racks (411) are slidably connected to the inside of the test machine (1); and the second disc gears (409) are meshed with the top and bottom of the first disc gear (408). 409) is bolted to one end near the first motor (401) with a winding wheel (410), and a sealing baffle (413) is slidably connected to one side of the inner wall of the test machine (1) near the pick-up and placement window (2) for use with the pick-up and placement window (2), and both sides of the bottom of the sealing baffle (413) are fixedly connected to a pull-back rope (412) fixedly wound around the surface of the winding wheel (410), and both sides of the top of the sealing baffle (413) are fixedly connected to a first spring (414) bolted to the test machine (1).

4. A test device for assembled BMS battery management system according to claim 2, characterized in that: The detection mechanism (5) comprises a second connecting shaft (501) rotatably connected to the top of the inner cavity of the test machine (1); the second connecting shaft (501) and the end of the threaded shaft (402) away from the first motor (401) are both bolted to a second synchronous wheel (502); the surface transmission sleeve of the second synchronous wheel (502) is connected to a second synchronous belt (503); the end of the second connecting shaft (501) away from the second synchronous wheel (502) is bolted to a first bevel gear (504); the end of the first bevel gear (504) away from the second connecting shaft (501) is meshed with a A second bevel gear (505) is rotatably connected to the test machine (1), a threaded sleeve (506) is welded to the bottom of the second bevel gear (505), a threaded sleeve (508) is threadedly sleeved on the surface of the threaded sleeve (506), a lifting platform (507) used in conjunction with the pushing platform (405) is bolted to the bottom of the threaded sleeve (508), positioning rods (518) are bolted to both sides of the lifting platform (507), and limiting sleeves (519) are bolted to both sides of the interior of the test machine (1) and are slidably connected to the positioning rods (518).

5. A test device for assembled BMS battery management system according to claim 4, characterized in that: The lifting platform (507) is internally slidably connected to a sliding plate (513); a second motor (509) is bolted to the top of the test platform (1); an output end of the second motor (509) is bolted to an output shaft (510) that is rotatably connected to the test platform (1), the second bevel gear (505) and the threaded sleeve (506); a rhombus-shaped sliding rod (511) is internally slidably connected to the output shaft (510); a rotating column (512) that is slidably connected to the inside of the sliding plate (513) is bolted to the bottom of the rhombus-shaped sliding rod (511); a second spring (514) that is bolted to the inside of the lifting platform (507) is fixedly connected to both sides of the top and bottom of the sliding plate (513); a wave groove (516) is provided on the surface of the rotating column (512); and sliding balls (517) that are slidably connected to the wave groove (516) are rotatably connected to both sides of the inside of the sliding plate (513).

6. A test device for assembled BMS battery management system according to claim 2, characterized in that: An anti-slip bar (6) is welded on the top of the pushing platform (405).

7. A test device for assembled BMS battery management system according to claim 3, characterized in that: A plunger plate (8) slidably connected to the support seat (3) is welded to the bottom of the sealing partition (413), and a sealing gasket (7) is bonded to the bottom of the sealing partition (413).

8. A test device for assembled BMS battery management system according to claim 1, characterized in that: A pressurizing window (9) is fixedly connected to one side of the interior of the test machine (1), an electric heating rod (12) is bolted to the interior of the pressurizing window (9), a pressurizing pump (10) bolted to the test machine (1) is arranged at the bottom of the pressurizing window (9), an output end of the pressurizing pump (10) is bolted to a pressurizing pipe (11) fixedly connected to the bottom of the pressurizing window (9), and an input end of the pressurizing pump (10) passes through the interior of the test machine (1) and is connected to the outside.

9. A test device for assembled BMS battery management system according to claim 1, characterized in that: Both sides of the exterior of the test platform (1) are open and bolted with observation windows (14), and the four corners of the bottom of the test platform (1) are bolted with universal wheels (17), and a locker (18) is installed on one side of the universal wheel (17).

10. A test device for assembled BMS battery management system according to claim 8, characterized in that: A filter screen (13) is bolted to one end of the pressurized window (9) close to the inside of the test machine (1), and an inspection door (15) is bolted to the other side outside the test machine (1), and a ventilation grille (16) is provided inside the inspection door (15).

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