A BMS test device

Abstract

The present invention discloses a BMS test device, belonging to the technical field of simulation testing. It includes a test bench equipped with test instruments, a disc brake device is arranged on the test bench, a test rack is arranged on the test bench, a driving test shaft is rotatably connected to the test rack, both ends of the driving test shaft extend outwards through the test rack respectively, a brake disc is arranged at one end of the driving test shaft, and the brake disc cooperates with the disc brake device to achieve rapid braking and stopping, and a magnetic coupling driving part is connected to the other end of the driving test shaft. The present invention simulates the display working conditions of the BMS through the rotor test track seat, heat collection frame and test mounting seat under high-speed rotation, significantly improving the authenticity and accuracy of BMS testing. Through the synergistic effects of mechanical motion (centrifugal force, rapid braking), vibration excitation and temperature change, the actual vehicle conditions are reproduced with high precision to verify the functional stability and reliability of the BMS circuit board in a complex environment.

Description

Technical Field

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

[0002] BMS refers to a battery management system, which is mainly responsible for monitoring the status of the battery, such as voltage, current, and temperature, and ensuring the safety and optimized performance of the battery;

[0003] When testing the BMS, the BMS circuit board is connected with signals by a tester, and then simulation tests are carried out. In this process, the BMS circuit board is in an exposed state to facilitate the connection of each connection terminal on the tester to the corresponding terminal. Although the current testing method can simulate the usage state of the BMS through software, it cannot achieve the simulation of the components on it. In a vehicle-mounted environment, the BMS is usually installed in the battery pack. The high-temperature working environment generated when the vehicle-mounted battery works is a common working condition of the BMS. Moreover, the BMS in the vehicle-mounted state usually encounters high-speed and high-acceleration states. At this time, the state of the internal components 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 testing device is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that it is also an urgent problem to be solved how to simulate the working conditions of the BMS in actual use, and to propose a BMS testing device.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] A BMS testing device includes a test bench installed with testing instruments, a disc brake device is arranged on the test bench, a test rack is arranged on the test bench, a driving test shaft is rotatably connected to the test rack, both ends of the driving test shaft respectively penetrate through the test rack and extend outwards, a brake disc is arranged at one end of the driving test shaft, the brake disc cooperates with the disc brake device to achieve rapid braking and stopping, and a magnetic coupling driving part is connected to the other end of the driving test shaft;

[0007] The driving test shaft is connected with a rotor test track seat. The rotor test track seat is connected with a heat collection frame through a sliding connecting piece. One side of the rotor test track seat is provided with a power storage control piece. The heat collection frame is connected with a test mounting seat through a polarization adjusting piece. The test mounting seat is movably connected with the heat collection frame through traction offset connecting pieces arranged at four corners. The test mounting seat is provided with a mounting opening for installing a BMS. A buckle stabilizing piece for limiting the BMS is arranged on the mounting opening. A dragging traction piece for adjusting a signal wire is arranged on the test mounting seat.

[0008] Preferably, the magnetic coupling driving piece includes a test motor connected with a test stand through an L-shaped support seat. The output end of the test motor is connected with a rotating shaft through a magnetic coupler. The end of the rotating shaft is fixedly connected with a rotating gear. The other end of the driving test shaft penetrates through the test stand and extends outwards, and is fixedly connected with a test gear. The test gear is meshed and connected with the rotating gear.

[0009] Preferably, the sliding connecting piece includes a track groove opened in the rotor test track seat. Limit sliders are fixedly arranged on both sides of the heat collection frame. Limit sliding openings for the limit sliders to move are arranged on both sides of the track groove.

[0010] Preferably, the power storage control piece includes an electromagnet connected with one end of the track groove far away from the driving test shaft. The electromagnet is connected with a magnetic attraction plate through a plurality of power storage springs. The magnetic attraction plate is magnetically attracted to the electromagnet.

[0011] Preferably, an air collecting cover is arranged at one end of the rotor test track seat. An air outlet groove is opened on the rotor test track seat. The air outlet groove is communicated with the air collecting cover through an air duct. An air outlet for air outlet is opened at the bottom of the mounting opening.

[0012] Preferably, the polarization adjusting piece includes a plurality of rotating shafts rotatably arranged on the inner wall of the heat collection frame. A heating cylinder is arranged on the outer side wall of the rotating shaft. Convex columns with different lengths are arranged on the outer surface of the heating cylinder. A rack groove is opened on the inner wall of the limit sliding opening on one side. One end of the rotating shaft penetrates into the rack groove and is fixedly connected with a meshing gear.

[0013] Preferably, the buckle stabilizing piece includes a stabilizing bottom frame arranged in the mounting opening. The test mounting seat is connected with a stabilizing upper frame through a buckle piece.

[0014] Preferably, the dragging traction piece includes a lead cover fixedly arranged on the side wall of the rotor test track seat. A wire passing opening communicated with the lead cover is opened at the end of the driving test shaft. A dragging piece is connected to the inner wall of the lead cover through a telescopic piece. A lead slider is slidably arranged on the lead cover;

[0015] A wire connecting board is detachably mounted on the test mounting base, and a wire connection port is formed on the wire connecting board.

[0016] Preferably, the traction offset connecting member includes a telescopic end seat and universal balls arranged on both sides of the telescopic end seat, and ball grooves connected to the universal balls are arranged on both the heat collecting frame and the test mounting base.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The present invention simulates the display working conditions of the BMS through the rotor test track base, the heat collecting frame and the test mounting base under high-speed rotation, significantly improving the authenticity and accuracy of the BMS test. It is applicable to the reliability verification under extreme vehicle working conditions. Through the synergistic action of mechanical motion (centrifugal force, emergency 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, the real-time interaction test of physical parameters (acceleration, temperature) and BMS logic is realized.

[0019] 2. The present invention controls the driving test shaft to rotate at high speed through the magnetic coupler, and controls the driving test shaft to stop suddenly through the disc brake device. In this process, the working environment of the BMS under acceleration, high rotation speed and high impact can be repeatedly obtained, so as to achieve the effect of true experimental verification of the simulation test. Description of the Drawings

[0020] Figure 1 is a three-dimensional structural schematic diagram of a BMS test device proposed by the present invention;

[0021] Figure 2 is a structural schematic diagram of the rotor test track base in a BMS test device proposed by the present invention;

[0022] Figure 3 is an assembly schematic diagram of each structure on the rotor test track base in a BMS test device proposed by the present invention;

[0023] Figure 4 is an assembly structural schematic diagram of the heat collecting frame and the test mounting base in a BMS test device proposed by the present invention;

[0024] Figure 5 is a structural schematic diagram of the magnetic coupling driving member in a BMS test device proposed by the present invention;

[0025] Figure 6 is a structural schematic diagram of the drag-type traction member in a BMS test device proposed by the present invention.

[0026] In the figure: 1. Test bench; 2. Disc brake device; 3. Test stand; 4. Driving test shaft; 5. Brake disc; 6. Rotor test track base; 7. Heat collection frame; 8. Test mounting base; 9. Test motor; 10. Magnetic coupler; 11. Rotating shaft; 12. Rotating gear; 13. Test gear; 14. Track groove; 15. Limit slider; 16. Limit sliding port; 17. Electromagnet; 18. Magnetic attraction plate; 19. Air collecting hood; 20. Air outlet groove; 21. Air outlet; 22. Rotating shaft; 23. Heating cylinder; 24. Rack groove; 25. Meshing gear; 26. Stable bottom frame; 27. Stable upper frame; 28. Buckle part; 29. Lead cover; 30. Wire through hole; 31. Telescopic part; 32. Dragging part; 33. Lead slider; 34. Wiring board; 35. Telescopic end seat; 36. Universal ball. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] Example, referring to Figures 1 to 6 , a BMS test device includes a test bench 1 equipped with test instruments. A disc brake device 2 is arranged on the test bench 1. The disc brake device 2 is a prior art and, in cooperation with the brake disc 5, can achieve rapid braking of the driving test shaft 4.

[0031] On the test bench 1, a test rack 3 is provided. A driving test shaft 4 is rotatably connected to the test rack 3. Both ends of the driving test shaft 4 extend outwards through the test rack 3. One end of the driving test shaft 4 is provided with a brake disc 5, and the brake disc 5 cooperates with the disc brake device 2 to achieve rapid braking and stopping. The other end of the driving test shaft 4 is connected with a magnetic coupling driving member;

[0032] Furthermore, the magnetic coupling driving member includes a test motor 9 connected to the test rack 3 through an L-shaped support seat. The output end of the test motor 9 is connected with a rotating shaft 11 through a magnetic coupler 10. The magnetic coupler 10 is an existing transmission structure and will not be elaborated here. The end of the rotating shaft 11 is fixedly connected with a rotating gear 12. The other end of the driving test shaft 4 extends outwards through the test rack 3 and is fixedly connected with a test gear 13. The test gear 13 is meshed and connected with the rotating gear 12.

[0033] It should be noted that when the present test device drives the driving test shaft 4, the output end of the test motor 9 is not directly and rigidly connected to the rotating shaft 11 through the magnetic coupler 10, so as to ensure that when the test motor 9 stops and the disc brake device 2 performs rapid braking on the driving test shaft 4, the test motor 9 will not be damaged.

[0034] The driving test shaft 4 is connected with a rotor test track seat 6. During the test, a cover body is provided on the rotor test track seat 6. Furthermore, a wind collecting cover 19 is provided at one end of the rotor test track seat 6. An air outlet groove 20 is opened on the rotor test track seat 6. The air outlet groove 20 is communicated with the wind collecting cover 19 through a wind duct. An air outlet 21 for air outlet is opened at the bottom of the installation opening.

[0035] The advantage of adopting the above structure is that when the rotor test track seat 6 rotates at a high speed under the action of the driving test shaft 4, the wind collecting cover 19 can generate wind during the high-speed rotation process, so that the wind is transported into the air outlet groove 20 through the wind duct, effectively cooling the BMS circuit board being tested at the installation opening and ensuring the normal operation of the BMS circuit board;

[0036] Moreover, when it is necessary to simulate the environment in the battery compartment, the heating cylinder 23 in the heat collecting frame 7 can be turned on to effectively heat up the passing wind, thereby changing the temperature in the installation opening and simulating the temperature state of the BMS circuit board working in the battery compartment, so as to ensure that the test results are more accurate.

[0037] The rotor test track seat 6 is connected with a heat collecting frame 7 through a sliding connecting member. Furthermore, the sliding connecting member includes a track groove 14 opened in the rotor test track seat 6. Limited position sliders 15 are fixedly arranged on both sides of the heat collecting frame 7. Limited position sliding openings 16 for the limited position sliders 15 to move are arranged on both sides of the track groove 14 to ensure the stable movement of the heat collecting frame 7 in the track groove 14.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] A drag-type traction member for adjusting the signal line is provided on the test mounting seat 8. The drag-type traction member includes a lead cover 29 fixedly provided on the side wall of the rotor test track seat 6. A wire through hole 30 communicating with the lead cover 29 is provided at the end of the drive test shaft 4. A drag member 32 is connected to the inner wall of the lead cover 29 through a telescopic member 31. A lead slider 33 is slidably provided on the lead cover 29. A wire arranging board 34 is detachably mounted on the test mounting seat 8, and a wire arranging port is provided on the wire arranging board 34.

[0045] The advantage of adopting the above structure is that during the test, the wiring on the BMS under-test circuit board is sorted out through the wire arranging board 34 and the lead cover 29, and finally moved out from the wire through hole 30. The presence of the wires will not affect the centrifugal rotation of the BMS under-test circuit board. And through the drag member 32 connected by the telescopic member 31, the excess length of the wires of the BMS under-test circuit board during sliding can be sorted out to ensure the normal progress of the test.

[0046] When the present invention detects the BMS under-test circuit board, the BMS under-test circuit board is installed in the installation port in the test mounting seat 8, and the BMS under-test circuit board is effectively fixed by the stable upper frame 27 and the stable bottom frame 26. The connecting wires of the BMS tester (existing instrument) penetrate through the lead cover 29 and the lead slider 33 and are connected to the corresponding interfaces on the BMS under-test circuit board. After the connection is completed, a simulation test is carried out;

[0047] At the start of the test, the drive test motor 9 is driven to drive the drive test shaft 4 to rotate. The rotation will drive 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. During the movement, the test mounting seat 8 will gradually move to one end away from the drive test shaft 4, generating a large centrifugal acceleration on the BMS under-test circuit board, so as to simulate the test process in the vehicle-mounted state;

[0048] And when the test mounting seat 8 moves to one end away from the drive test shaft 4, it will contact the energy storage control member to generate energy storage. After sudden braking, a great acceleration can be generated through the energy storage spring to simulate the working conditions in the vehicle-mounted state;

[0049] During the test, when the test drive shaft 4 is braked and accelerated, the heat collection frame 7 will move on the rotor test track seat 6 during the test. During the movement, the heating cylinder 23 will be driven to rotate. The convex posts provided on the heating cylinder 23 will simulate the vibration of the BMS circuit board under test. In addition, the above-mentioned heating cylinder 23 will also control the temperature of the BMS circuit board under test during the test stage. Therefore, when the working conditions of the BMS circuit board under test are simulated by software, the actual working conditions of the BMS circuit board can be synchronously simulated in the environment, achieving the effect of high-precision testing;

[0050] Through the integrated design of mechanics-thermotics-electricity, the present invention significantly improves the authenticity and precision of BMS testing, and is applicable to the reliability verification under extreme working conditions of vehicles. Through the synergistic effects of mechanical movements (centrifugal force, emergency braking), vibration excitation and temperature changes, the actual working conditions of vehicles are reproduced with high precision, and the functional stability and reliability of the BMS circuit board under complex environments are verified. By integrating centrifugal acceleration, emergency braking recoil, vibration and temperature control, the mechanical and thermal environment challenges during vehicle operation are comprehensively covered. Through the linkage of mechanical transmission and software simulation, real-time interactive testing of physical parameters (acceleration, temperature) and BMS logic is achieved.

[0051] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within 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 provided 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 provided 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; 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).

2. 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.

3. A BMS testing device according to claim 2, 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.

4. 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.

5. A BMS testing device according to claim 2, 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).

6. 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).

7. 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).

8. 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).

Images