BMS testing device

Abstract

The invention discloses a BMS (Battery Management System) testing device, which belongs to the technical field of simulation testing and comprises a testing table provided with a testing instrument, a disc brake device is arranged on the testing table, a testing rack is arranged on the testing table, a driving testing shaft is rotationally connected to the testing rack, and two ends of the driving testing shaft respectively penetrate through the testing rack and extend outwards. One end of the driving test shaft is provided with a brake disc, the brake disc is matched with the disc brake device, emergency brake and quick stop can be achieved, and the other end of the driving test shaft is connected with a magnetic coupling driving piece. The display working condition of the BMS is simulated through the rotor test track base, the heat collection frame and the test mounting base which rotate at a high speed, the authenticity and precision of BMS testing are remarkably improved, the actual vehicle-mounted working condition is reproduced at high precision through the synergistic effect of mechanical movement (centrifugal force and sudden brake), vibration excitation and temperature change, and the test efficiency is improved. And the function stability and reliability of the BMS circuit board in a complex environment are verified.

Description

Technical Field

[0001] The present invention relates to the technical field of simulation testing, and in particular to a BMS testing device. Background Art

[0002] BMS refers to the battery management system, which is mainly responsible for monitoring the status of the battery, such as voltage, current, temperature, and ensuring the safety and optimized performance of the battery; When testing the BMS, the BMS circuit board is connected to the signal through the tester, and then a simulation test is performed. During this process, the BMS circuit board is in an exposed state to facilitate the connection of the corresponding terminals of each connection end on the tester. Although the current test method can simulate the use status of the BMS through software, it cannot achieve the simulation of the test for the corresponding devices on it. In the vehicle environment, the BMS is usually installed in the battery pack. The high temperature working environment generated when the vehicle battery is working is a common working condition of the BMS, and the BMS in the vehicle state usually encounters high speed and high acceleration. At this time, the state of the internal devices seriously restricts the operation level of the entire BMS. Therefore, in the process of testing the BMS, how to simulate the working conditions of the BMS in actual use is also an urgent problem to be solved. Based on this, a BMS test device is now proposed. Summary of the invention

[0003] The purpose of the present invention is to solve the problem in the prior art that how to simulate the working conditions of a BMS in actual use is also an urgent problem to be solved, and to propose a BMS testing device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A BMS test device, comprising a test bench with a test instrument installed, a disc brake device arranged on the test bench, a test frame arranged on the test bench, a drive test shaft rotatably connected to the test frame, two ends of the drive test shaft respectively pass through the test frame and extend outward, a brake disc is arranged at one end of the drive test shaft, the brake disc cooperates with the disc brake device to achieve emergency braking and quick stopping, and the other end of the drive test shaft is connected to a magnetic coupling drive member; The driving test shaft is connected to a rotor test track seat, and the rotor test track seat is connected to a heat collecting frame through a sliding connection. A force storage control component is arranged on one side of the rotor test track seat. The heat collecting frame is connected to a test mounting seat through a polarization adjustment component. The test mounting seat is movably connected to the heat collecting frame through traction bias connecting components arranged at four corners. The test mounting seat is provided with an installation port for installing a BMS, and a snap-on fixing component for limiting the BMS is arranged on the installation port. A pulling traction component for adjusting the signal line is arranged on the test mounting seat.

[0005] Preferably, the magnetic coupling drive component includes a test motor connected to the test frame through an L-shaped support seat, the output end of the test motor is connected to a rotating shaft through a magnetic coupler, the end of the rotating shaft is fixedly connected to a rotating gear, the other end of the driving test shaft extends outward through the test frame and is fixedly connected to a test gear, and the test gear is meshingly connected to the rotating gear.

[0006] Preferably, the sliding connection member comprises a track groove provided in the rotor test track seat, and limiting sliders are fixedly provided on both sides of the heat collecting frame, and limiting sliding openings for the limiting sliders to move are provided on both sides of the track groove.

[0007] Preferably, the force storage control component comprises an electromagnet connected to one end of the track groove away from the driving test shaft, the electromagnet is connected to a magnetic attraction plate via a plurality of force storage springs, and the magnetic attraction plate is magnetically attracted to the electromagnet.

[0008] Preferably, an air collecting hood is provided at one end of the rotor test track seat, an air outlet slot is provided on the rotor test track seat, the air outlet slot is connected to the air collecting hood through an air duct, and an air outlet for discharging air is provided at the bottom of the installation opening.

[0009] Preferably, the polarization adjustment component includes a plurality of rotating shafts rotatably arranged on the inner wall of the heat collecting frame, a heating tube is arranged on the outer wall of the rotating shaft, and convex columns of different lengths are arranged on the outer surface of the heating tube. A rack groove is provided on the inner wall of the limiting sliding opening on one side, and one end of the rotating shaft passes through the rack groove and is fixedly connected with a meshing gear.

[0010] Preferably, the snap-fastening stabilizing member comprises a stabilizing bottom frame arranged in the mounting opening, and the test mounting seat is connected to a stabilizing upper frame via the snap-fastening member.

[0011] Preferably, the pulling type traction member comprises a lead cover fixedly arranged on the side wall of the rotor test track seat, the end of the driving test shaft is provided with a wire opening connected to the lead cover, the inner wall of the lead cover is connected to the pulling member through a telescopic member, and a lead slider is slidably arranged on the lead cover; A cable arrangement board is detachably mounted on the test mounting seat, and a cable arrangement opening is provided on the cable arrangement board.

[0012] Preferably, the traction bias connection member comprises a telescopic end seat and universal balls arranged on both sides of the telescopic end seat, and the heat collecting frame and the test mounting seat are both provided with ball grooves connected to the universal balls.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention simulates the display conditions of BMS through the rotor test track seat, the heat collection frame and the test mounting seat under high-speed rotation, which significantly improves the authenticity and accuracy of BMS testing. It is suitable for reliability verification under extreme vehicle conditions. Through the synergistic effect of mechanical movement (centrifugal force, sudden braking), vibration excitation and temperature change, the actual vehicle working conditions are reproduced with high precision to verify the functional stability and reliability of the BMS circuit board in a complex environment. Through the linkage of mechanical transmission and software simulation, real-time interactive testing of physical parameters (acceleration, temperature) and BMS logic is achieved.

[0014] 2. The present invention controls the driving test shaft to rotate at high speed through a magnetic coupler, and controls the driving test shaft to stop suddenly through a disc brake device. During this process, the working environment of the BMS under acceleration, high speed and high impact can be repeatedly obtained, thereby achieving the effect of a real verification simulation test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a BMS testing device proposed by the present invention; Figure 2 A schematic diagram of the structure on a rotor test track seat in a BMS test device proposed by the present invention; Figure 3 This is a schematic diagram of the assembly of various structures on a rotor test track seat in a BMS test device proposed by the present invention; Figure 4 This is a schematic diagram of the assembly structure of a heat collecting frame and a test mounting seat in a BMS test device proposed by the present invention; Figure 5 This is a structural schematic diagram of a magnetic coupling driver in a BMS test device proposed by the present invention; Figure 6 The present invention provides a schematic structural diagram of a pulling type traction member in a BMS testing device.

[0016] In the figure: 1. test bench; 2. disc brake device; 3. test frame; 4. drive test shaft; 5. brake disc; 6. rotor test track seat; 7. heat collecting frame; 8. test mounting seat; 9. test motor; 10. magnetic coupler; 11. rotating shaft; 12. rotating gear; 13. test gear; 14. track groove; 15. limit slider; 16. limit slide; 17. electromagnet; 18. magnetic suction plate; 19. air collecting cover; 20. air outlet slot; 21. air outlet; 22. rotating shaft; 23. heating cylinder; 24. rack groove; 25. meshing gear; 26. stabilize the bottom frame; 27. stabilize the upper frame; 28. snap-on part; 29. ​​lead cover; 30. wire pass; 31. telescopic part; 32. pulling part; 33. lead slider; 34. wiring board; 35. telescopic end seat; 36. universal ball. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example, see Figures 1 to 6 A BMS test device includes a test bench 1 equipped with a test instrument, a disc brake device 2 is provided on the test bench 1, and the disc brake device 2 is a prior art device, which works together with a brake disc 5 to achieve a rapid stop of a driving test shaft 4; The test bench 1 is provided with a test frame 3, and a driving test shaft 4 is rotatably connected to the test frame 3. Both ends of the driving test shaft 4 respectively penetrate the test frame 3 and extend outward. A brake disc 5 is provided at one end of the driving test shaft 4. The brake disc 5 cooperates with the disc brake device 2 to achieve emergency braking and quick stopping. The other end of the driving test shaft 4 is connected to a magnetic coupling driving member. Furthermore, the magnetic coupling drive component includes a test motor 9 connected to the test frame 3 through an L-shaped support base. The output end of the test motor 9 is connected to a rotating shaft 11 through a magnetic coupler 10. The magnetic coupler 10 is an existing transmission structure and will not be described in detail here. The end of the rotating shaft 11 is fixedly connected to a rotating gear 12. The other end of the driving test shaft 4 extends outward through the test frame 3 and is fixedly connected to a test gear 13. The test gear 13 is meshingly connected to the rotating gear 12.

[0021] It should be noted that when the test device drives the driving test shaft 4, the magnetic coupler 10 is used to prevent the output end of the test motor 9 from being directly rigidly connected to the rotating shaft 11, thereby ensuring that when the test motor 9 stops and the disc brake device 2 suddenly brakes the driving test shaft 4, no damage is caused to the test motor 9.

[0022] The driving test shaft 4 is connected to the rotor test track seat 6. During the test, a cover is provided on the rotor test track seat 6. Furthermore, an air collecting hood 19 is provided at one end of the rotor test track seat 6. An air outlet slot 20 is provided on the rotor test track seat 6. The air outlet slot 20 is connected to the air collecting hood 19 through an air duct, and an air outlet 21 for air discharge is provided at the bottom of the installation port.

[0023] The advantage of adopting the above structure is that when the rotor test track seat 6 rotates at high speed under the action of the driving test shaft 4, the wind collecting cover 19 can be set to generate wind during the high-speed rotation process, so that the wind is transported to the air outlet slot 20 through the air duct, and the BMS circuit board under test at the installation port is effectively cooled, thereby ensuring the normal operation of the BMS circuit board; Furthermore, when it is necessary to simulate the environment inside the battery compartment, the heating cylinder 23 in the heat collecting frame 7 can be turned on to effectively heat the passing wind, thereby changing the temperature inside the installation port and simulating the temperature state of the BMS circuit board working in the battery compartment, thereby ensuring that the test results are more accurate.

[0024] The rotor test track seat 6 is connected to the heat collecting frame 7 through a sliding connection. Furthermore, the sliding connection includes a track groove 14 opened in the rotor test track seat 6, and limiting sliders 15 are fixedly arranged on both sides of the heat collecting frame 7. Limiting sliding openings 16 for the limiting sliders 15 to move are arranged on both sides of the track groove 14, thereby ensuring the stable movement of the heat collecting frame 7 in the track groove 14.

[0025] A force storage control component is provided on one side of the rotor test track seat 6, and the force storage control component includes an electromagnet 17 connected to the end of the track groove 14 away from the drive test shaft 4. The electromagnet 17 is connected to a magnetic attraction plate 18 through a plurality of force storage springs, and the magnetic attraction plate 18 and the electromagnet 17 are magnetically attracted.

[0026] The advantage of adopting the above structure is that when the driving test shaft 4 drives the rotor test track seat 6 to rotate at high speed, the heat collecting frame 7 located on the rotor test track seat 6 will approach the force storage control part under the action of centrifugal force, and gradually squeeze the force storage spring, and finally when the magnetic attraction plate 18 approaches the electromagnet 17, it is attracted by the magnetic attraction plate 18. When the rotation stops, by cutting off the power to the electromagnet 17, the force storage spring applies a strong acceleration to the heat collecting frame 7, simulating the detection effect of the BMS circuit board under the accelerated state.

[0027] The test mount 8 is movably connected to the heat collecting frame 7 through traction bias connectors arranged at the four corners. The traction bias connectors include a telescopic end seat 35 and a universal ball 36 arranged on both sides of the telescopic end seat 35. Ball grooves connected to the universal ball 36 are provided on the heat collecting frame 7 and the test mount 8. The setting of the traction bias connector can meet the requirement of the active connection between the test mount 8 and the heat collecting frame 7, thereby ensuring the vibration effect of the polarization adjustment component on the test mount 8.

[0028] The heat collecting frame 7 is connected to the test mounting seat 8 through a polarization adjustment member. Furthermore, the polarization adjustment member includes a plurality of rotating shafts 22 rotatably arranged on the inner wall of the heat collecting frame 7, a heating tube 23 is arranged on the outer wall of the rotating shaft 22, and convex columns of different lengths are arranged on the outer surface of the heating tube 23. A rack groove 24 is opened on the inner wall of the limiting slide 16 located on one side, one end of the rotating shaft 22 passes through the rack groove 24 and is fixedly connected with a meshing gear 25.

[0029] During the test of the heat collecting frame 7, when it moves on the rotor test track seat 6, the meshing gear 25 will move on the rack groove 24, and the heating tube 23 will be driven to rotate during the movement. The convex columns thereon will achieve different degrees of resistance to the test mounting seat 8, realizing vibration simulation and testing the reliability of the BMS chip in the vehicle-mounted state.

[0030] The test mounting seat 8 is provided with a mounting opening for installing the BMS, and a snap-on stabilizing member for limiting the BMS is provided on the mounting opening, and the snap-on stabilizing member includes a stabilizing bottom frame 26 arranged in the mounting opening, and the test mounting seat 8 is connected to a stabilizing upper frame 27 via a snap-on member 28, wherein the snap-on member 28 includes a card slot provided on the test mounting seat 8 and a card member connected to the stabilizing upper frame 27, and the cooperation between the card slot and the card member can achieve the effect of snap-on installation, and under the action of the stabilizing upper frame 27 and the stabilizing bottom frame 26, the BMS circuit board under test can be effectively fixed.

[0031] The test mounting seat 8 is provided with a pulling type traction member for adjusting the signal line, and the pulling type traction member includes a lead cover 29 fixedly arranged on the side wall of the rotor test track seat 6, and a wire passage 30 connected to the lead cover 29 is opened at the end of the driving test shaft 4. The inner wall of the lead cover 29 is connected to a pulling member 32 through a telescopic member 31, and a lead slider 33 is slidably arranged on the lead cover 29. A wire arrangement board 34 is detachably installed on the test mounting seat 8, and a wire arrangement port is opened on the wire arrangement board 34.

[0032] The advantage of adopting the above structure is that, during the test, the wiring on the BMS circuit board under test is arranged through the wiring board 34 and the lead cover 29, and finally removed from the wire opening 30. The presence of the wire will not affect the centrifugal rotation of the BMS circuit board under test, and by setting the pulling member 32 connected to the telescopic member 31, the excess length of the wire of the sliding BMS circuit board under test can be arranged to ensure the normal progress of the test.

[0033] When testing the BMS circuit board under test, the present invention installs the BMS circuit board under test in the installation opening in the test mounting seat 8, and effectively fixes the BMS circuit board under test by means of the stable upper frame 27 and the stable bottom frame 26, and passes the connecting wire of the BMS tester (existing instrument) through the lead cover 29 and the lead slider 33, and connects with the corresponding interface on the BMS circuit board under test. After the connection is completed, a simulation test is performed; At the beginning of the test, the driving test motor 9 drives the driving test shaft 4 to rotate, and the rotation drives the rotor test track seat 6 connected thereto to rotate synchronously. As the rotation speed becomes faster and faster, the heat collecting frame 7 on the rotor test track seat 6 will move, and during the movement, the test mounting seat 8 will gradually move to the end away from the driving test shaft 4, so as to generate a large centrifugal acceleration for the BMS circuit board under test, thereby simulating the test process in a vehicle-mounted state; When the test mounting seat 8 moves to the end away from the driving test shaft 4, it will contact the force storage control part to generate force storage. After emergency braking, the force storage spring can generate a great acceleration to simulate the working conditions under the vehicle state; During the test, when the test shaft 4 is driven to stop and accelerate, the heat collecting frame 7 will move on the rotor test track seat 6 during the test, and the heating cylinder 23 will be driven to rotate during the movement. The convex column arranged on the heating cylinder 23 will realize the vibration simulation of the BMS circuit board under test, and the above heating cylinder 23 will also control the temperature of the BMS circuit board under test during the test stage, so that when the software simulates the working condition of the BMS circuit board under test, the environment can synchronously simulate the actual working condition of the BMS circuit board under test, so as to achieve the effect of high-precision testing; The present invention significantly improves the authenticity and accuracy of BMS testing through a mechanical-thermal-electrical integrated design, and is suitable for reliability verification under extreme vehicle operating conditions. Through the synergistic effect of mechanical movement (centrifugal force, emergency braking), vibration excitation and temperature change, the actual vehicle operating conditions can be reproduced with high precision, and the functional stability and reliability of the BMS circuit board in a complex environment can be verified. It integrates centrifugal acceleration, emergency braking recoil, vibration and temperature control, and comprehensively covers the mechanical and thermal environment challenges in vehicle operation. Through the linkage of mechanical transmission and software simulation, real-time interactive testing of physical parameters (acceleration, temperature) and BMS logic can be achieved.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A BMS testing device, comprising a test bench (1) equipped with a testing instrument, wherein a disc brake device (2) is arranged on the test bench (1), characterized in that: The test bench (1) is provided with a test frame (3), and a driving test shaft (4) is rotatably connected to the test frame (3), and both ends of the driving test shaft (4) respectively penetrate the test frame (3) and extend outwards, and a brake disc (5) is provided at one end of the driving test shaft (4), and the brake disc (5) cooperates with the disc brake device (2) to achieve emergency braking and rapid stopping, and the other end of the driving test shaft (4) is connected to a magnetic coupling driving member; The driving test shaft (4) is connected to a rotor test track seat (6), the rotor test track seat (6) is connected to a heat collecting frame (7) via a sliding connection piece, a power storage control piece is arranged on one side of the rotor test track seat (6), the heat collecting frame (7) is connected to a test mounting seat (8) via a polarization adjustment piece, the test mounting seat (8) is movably connected to the heat collecting frame (7) via traction bias connection pieces arranged at four corners, the test mounting seat (8) is provided with a mounting opening for installing a BMS, the mounting opening is provided with a snap-on fixing piece for limiting the BMS, and the test mounting seat (8) is provided with a pulling traction piece for adjusting a signal line.

2. A BMS testing device according to claim 1, characterized in that: The magnetic coupling drive component comprises a test motor (9) connected to the test frame (3) via an L-shaped support seat, the output end of the test motor (9) is connected to a rotating shaft (11) via a magnetic coupler (10), the end of the rotating shaft (11) is fixedly connected to a rotating gear (12), the other end of the driving test shaft (4) passes through the test frame (3) and extends outwards, and is fixedly connected to a test gear (13), and the test gear (13) is meshingly connected to the rotating gear (12).

3. A BMS testing device according to claim 1, characterized in that: The sliding connection member comprises a track groove (14) provided in a rotor test track seat (6), limit sliders (15) are fixedly provided on both sides of the heat collecting frame (7), and limit sliding openings (16) are provided on both sides of the track groove (14) for the limit sliders (15) to move.

4. A BMS testing device according to claim 3, characterized in that: The force storage control component comprises an electromagnet (17) connected to one end of the track groove (14) away from the driving test shaft (4), the electromagnet (17) being connected to a magnetic attraction plate (18) via a plurality of force storage springs, the magnetic attraction plate (18) and the electromagnet (17) being magnetically attracted to each other.

5. A BMS testing device according to claim 1, characterized in that: An air collecting hood (19) is provided at one end of the rotor test track seat (6), an air outlet slot (20) is provided on the rotor test track seat (6), the air outlet slot (20) is connected to the air collecting hood (19) through an air duct, and an air outlet (21) for discharging air is provided at the bottom of the installation opening.

6. A BMS testing device according to claim 3, characterized in that: The polarization adjustment member comprises a plurality of rotating shafts (22) rotatably arranged on the inner wall of the heat collecting frame (7); a heating cylinder (23) is arranged on the outer wall of the rotating shaft (22); a convex column of different lengths is arranged on the outer surface of the heating cylinder (23); a rack groove (24) is formed on the inner wall of the limiting sliding opening (16) on one side; one end of the rotating shaft (22) penetrates into the rack groove (24) and is fixedly connected to a meshing gear (25).

7. A BMS testing device according to claim 1, characterized in that: The buckle stabilizing member comprises a stabilizing bottom frame (26) arranged in the mounting opening, and the test mounting seat (8) is connected to a stabilizing upper frame (27) via a buckle member (28).

8. A BMS testing device according to claim 1, characterized in that: The pulling type traction member comprises a wire cover (29) fixedly arranged on the side wall of the rotor test track seat (6); the end of the driving test shaft (4) is provided with a wire opening (30) connected to the wire cover (29); the inner wall of the wire cover (29) is connected to a pulling member (32) via a telescopic member (31); and a wire slider (33) is slidably arranged on the wire cover (29); A cable arrangement plate (34) is detachably mounted on the test mounting seat (8), and a cable arrangement opening is provided on the cable arrangement plate (34).

9. A BMS testing device according to claim 1, characterized in that: The traction bias connection member comprises a telescopic end seat (35) and universal balls (36) arranged on both sides of the telescopic end seat (35), and ball grooves connected to the universal balls (36) are provided on the heat collection frame (7) and the test mounting seat (8).

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