Power battery simulation test equipment and test method

Abstract

The invention belongs to the technical field of battery testing, and particularly relates to power battery simulation test equipment and a test method.The power battery simulation test equipment comprises a machine base, and a test board is connected to the upper portion of the machine base; the testing assembly comprises a fixing frame, the fixing frame is fixedly connected with the machine base, the two ends of the fixing frame are fixedly connected with a pair of supports, the supports are both connected with collision assemblies, the two collision assemblies are arranged on the two sides of the testing table respectively, and a first rotating shaft is rotationally connected between the two supports; a driving motor used for driving the first rotating shaft to rotate is installed on the support, and a pair of rotating rollers are fixedly connected to the two ends of the first rotating shaft and used for driving the collision assembly to move; the collision assembly comprises a collision test method and a pressure test method. Through arrangement of the collision assembly and the vibration assembly, the use environment of the power battery under vibration, collision and stress can be simulated, the performance of the power battery under different use environments can be tested, and the test is relatively convenient.

Description

Technical Field

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

[0002] With the rapid development of electric vehicles, an increasing number of power batteries are being developed and designed. Before these batteries are put into use, a large amount of actual operating data and successful experience must be accumulated. However, these batteries also present challenges such as rapid performance degradation, short service life, limited operating environments, and a need for improved reliability. The environmental adaptability of power battery systems has become a key indicator for evaluating their performance. By simulating the actual operating environment and various operating conditions of power battery systems, such as vibration, collision, and stress, the stability of the battery current is tested.

[0003] However, existing power battery simulation test equipment has many shortcomings. The test method of the test equipment is single, and the simulated usage environment is single, which cannot simulate various usage environments of the power battery. Therefore, the power battery needs to be transported to different test equipment during testing, which is relatively inconvenient. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a power battery simulation test device and test method, which can simulate the performance of the power battery in different environments and perform multiple tests on the power battery, aiming to solve the problems in the background technology.

[0005] In order to achieve the above technical objectives, the specific technical solutions of the present invention are as follows: a power battery simulation test device proposed by the present invention includes: a machine base, a test bench is connected above the machine base for placing the power battery; a test assembly, the test assembly includes a fixed frame, the fixed frame is fixedly connected to the machine base, a pair of brackets are fixedly connected at both ends of the fixed frame, and collision assemblies are connected to the brackets, the two collision assemblies are respectively arranged on both sides of the test bench, and a first rotating shaft is rotatably connected between the two brackets; a driving motor for driving the first rotating shaft to rotate is installed on the bracket, and a pair of rotating rollers are fixedly connected at both ends of the first rotating shaft to drive the collision assembly to move; the collision assembly includes two test methods: collision test and pressure test.

[0006] As a preferred technical solution of the present invention, the collision assembly includes a sliding frame, one end of the sliding frame is fixedly connected to an elastic telescopic rod, and one end of the elastic telescopic rod is fixedly connected to a collision plate for colliding and applying pressure to the power battery.

[0007] As a preferred technical solution of the present invention, a spiral strip is provided on the surface of the rotating roller, one end of the spiral strip is fixedly connected to a baffle, the sliding frame is connected to a limiting frame, and the limiting frame is rotatably connected to a limiting wheel that cooperates with the spiral strip.

[0008] As a preferred technical solution of the present invention, the bracket is fixedly connected with a slide bar that is slidably connected to the sliding frame. A stop block is fixedly connected to the end of the slide bar, and a cylindrical spring is connected to the surface of the slide bar; and a guide bar that is slidably connected to the sliding frame is fixedly connected to the collision plate.

[0009] As a preferred technical solution of the present invention, the limiting frame is slidably connected to the sliding frame, and an adjusting bolt is threadedly connected to the sliding frame for driving the limiting frame to move up and down. The adjusting bolt is rotatably connected to the limiting frame.

[0010] As a preferred technical solution of the present invention, the fixed frame is rotatably connected with a second rotating shaft, and a pair of vibration components are connected to both ends of the fixed frame for driving the test bench to vibrate; the vibration components include: a rotating rod arranged vertically, the rotating rod is rotatably connected to the fixed frame, and the second rotating shaft drives the rotating rod to rotate through a gear assembly; an inclined disk, fixedly connected to the rotating rod; a connecting frame, the connecting frame is fixedly connected to the test bench.

[0011] As a preferred technical solution of the present invention, the connecting frame is fixedly connected with a limiting block that cooperates with the inclined disk. A limiting groove is provided on the limiting block, and a ball is installed in the limiting groove.

[0012] As a preferred technical solution of the present invention, the second rotating shaft is fixedly connected with a gear, and the first rotating shaft is connected with a rotating member that cooperates with the gear; the rotating member includes: an outer gear ring, the outer gear ring meshes with the gear; a ratchet wheel, the ratchet wheel is fixedly connected to the first rotating shaft; a plurality of pawls that cooperate with the ratchet wheel are connected to the inner ring of the outer gear ring, and an elastic member is connected between the pawl and the inner wall of the outer gear ring.

[0013] As a preferred technical solution of the present invention, a plurality of telescopic columns are connected between the test bench and the machine base, and a pair of clamping frames are connected to both sides of the test bench for fixing the power battery; the clamping frame is rotatably connected with a threaded rod, and the threaded rod is threadedly connected to the test bench.

[0014] A simulation test method for a power battery includes: Battery fixing: Clamp and fix the power battery on the test bench. The power battery is connected to a load through an electric wire to form a stable closed-loop circuit, and an ammeter is connected to the circuit. Collision test: The driving motor drives the first rotating shaft to rotate forward, drives the rotating roller to rotate, drives the collision component to move away from the test bench. When the sliding frame slides to the end of the rotating roller, the sliding frame and the rotating roller are instantly separated, and the collision component hits the power battery under the elastic force of the cylindrical spring, and observe the numerical change of the ammeter at the moment of impact. Pressure test: The driving motor drives the first rotating shaft to rotate in the reverse direction, driving the rotating roller to rotate in the reverse direction, and then driving the collision component to move towards the test bench, causing the collision component to contact the side of the power battery and applying pressure to the power battery. Observe the change in the value of the ammeter during the pressure application process; Vibration test: Adjust the height of the limiting wheel by adjusting the bolt so that the limiting wheel is separated from the spiral bar; The driving motor drives the first rotating shaft to rotate in the forward direction, and the first rotating shaft drives the second rotating shaft to rotate through the rotating part. When the second rotating shaft rotates, it drives the vibration component to move, thereby driving the power battery to vibrate. Observe the change in the value of the ammeter during the vibration process.

[0015] The beneficial effects of the present invention are as follows: By providing a collision component and a vibration component, the collision component and the vibration component are interlocked with each other, and thus it is possible to simulate the usage environment of the power battery under vibration, impact, and force, so as to perform performance tests on the power battery under different usage environments, and the test is relatively convenient. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a power battery simulation test device proposed by the present invention.

[0017] Figure 2 It is a schematic structural diagram of the test component proposed by the present invention.

[0018] Figure 3 It is a schematic structural diagram of the collision component proposed by the present invention.

[0019] Figure 4 It is another perspective schematic diagram of the collision component proposed by the present invention.

[0020] Figure 5 It is a schematic structural diagram of the rotating roller proposed by the present invention.

[0021] Figure 6 It is a schematic structural diagram of the vibration component proposed by the present invention.

[0022] Figure 7 It is a schematic structural diagram of the limiting frame proposed by the present invention.

[0023] Figure 8 It is a schematic structural diagram of the rotating part proposed by the present invention.

[0024] In the figure: 1, machine base; 2, test bench; 21, telescopic column; 3, test component; 4, fixing frame; 41, bracket; 42, first rotating shaft; 43, second rotating shaft; 44, gear; 45, rotating part; 451, external gear ring; 452, ratchet wheel; 453, ratchet pawl; 454, elastic part; 5, vibration component; 51, rotating rod; 52, connecting frame; 521, limiting block; 522, limiting groove; 523, ball; 53, swash plate; 6, rotating roller; 61, spiral strip; 62, baffle plate; 7, collision component; 71, slide bar; 72, stop block; 73, cylindrical spring; 74, sliding frame; 75, collision plate; 76, elastic telescopic rod; 77, guide rod; 78, limiting frame; 79, adjusting bolt; 710, limiting wheel; 8, drive motor; 9, clamping frame; 10, threaded rod. Detailed implementation mode

[0025] 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.

[0026] Embodiment 1: This embodiment discloses a power battery simulation test device, as Figures 1-8 shown, including: a machine base 1, a test bench 2 is connected above the machine base 1 for placing a power battery, and the test bench 2 can vibrate up and down; a test component 3, the test component is installed on the machine base 1; wherein, the test component 3 includes a fixing frame 4, the fixing frame 4 is fixedly connected to the machine base 1, the fixing frame 4 is arranged below the test bench 2, a pair of brackets 41 are fixedly connected to both ends of the fixing frame 4, collision components 7 are connected to both brackets 41, the two collision components 7 are respectively arranged on both sides of the test bench 2, and are both used for performing collision tests and pressure tests on the power battery, and a first rotating shaft 42 is rotatably connected between the two brackets 41; a drive motor 8 for driving the first rotating shaft 42 to rotate is installed on the bracket 41, the drive motor 8 can rotate forward and backward, the drive motor 8 drives the first rotating shaft 42 to rotate through a gear assembly, and a pair of rotating rollers 6 are fixedly connected to both ends of the first rotating shaft 42 for driving the collision component 7 to move; the collision component 7 includes two test methods of collision test and pressure test.

[0027] Preferably, four telescopic columns 21 are connected between the test bench 2 and the machine base 1, so that the test bench 2 can vibrate up and down, and a pair of clamping frames 9 are connected to both sides of the test bench 2 for fixing the power battery; the clamping frame 9 is rotatably connected with a threaded rod 10, the threaded rod 10 is threadedly connected to the test bench 2, and by rotating the threaded rod 10, the clamping frame 9 can be driven to move to clamp and fix the power battery, which is convenient for testing the power battery.

[0028] As Figures 3-5As shown in the figure, the collision component 7 includes a sliding frame 74. A slide bar 71 that is slidably connected to the sliding frame 74 is fixedly connected to the bracket 41. A stop block 72 is fixedly connected to the end of the slide bar 71, and a cylindrical spring 73 is connected to the surface of the slide bar 71. The cylindrical spring 73 is arranged between the stop block 72 and the sliding frame 74. One end of the sliding frame 74 is fixedly connected to an elastic telescopic rod 76. The elastic telescopic rod 76 can be telescoped and a spring is installed inside. One end of the elastic telescopic rod 76 is fixedly connected to a collision plate 75 for colliding with and pressing the power battery. A rubber layer can be provided on the surface of the collision plate 75 to avoid damaging the battery. A guide rod 77 that is slidably connected to the sliding frame 74 is fixedly connected to the collision plate 75, so that the collision plate 75 slides stably. A spiral strip 61 is provided on the surface of the rotating roller 6. The number of turns of the spiral strip 61 is less than 1 to prevent the spiral strip 61 from obstructing the sliding frame 74 when it moves back. A baffle 62 is fixedly connected to one end of the spiral strip 61 close to the test bench 2 for limiting the sliding frame 74. A limiting frame 78 is connected to the sliding frame 74. A limiting wheel 710 that cooperates with the spiral strip 61 is rotatably connected to the limiting frame 78. The limiting wheel 710 is in contact with the side surface of the spiral strip 61. Specifically in implementation: when the rotating roller 6 rotates slowly in the forward direction, the sliding frame 74 is driven to move through the spiral strip 61, driving the collision component 7 to move away from the test bench 2. The cylindrical spring 73 is compressed by the force. When the limiting wheel 710 moves to the end of the spiral strip 61, the limiting wheel 710 is instantly separated from the spiral strip 61. The sliding frame 74 moves towards the power battery under the elastic force of the cylindrical spring 73, driving the entire collision component 7 to collide with the power battery. The limiting wheel 710 moves to the position of the baffle 62. Without damaging the battery, it is tested whether the power battery works normally under the condition of impact. Through the continuous rotation of the rotating roller 6, the collision component 7 will be intermittently driven to collide with the power battery, and continuous collision tests will be carried out. When the rotating roller 6 rotates slowly in the reverse direction, the sliding frame 74 is driven towards the power battery through the spiral strip 61. The collision plate 75 contacts the power battery and applies a certain pressure to the power battery. The elastic telescopic rod 76 is compressed by the force. By applying pressure to the power battery, the working condition of the power battery under pressure is tested.

[0029] Preferably, the limiting frame 78 is slidably connected to the sliding frame 74. An adjusting bolt 79 is threadedly connected to the sliding frame 74 for driving the limiting frame 78 to move up and down. The adjusting bolt 79 is rotatably connected to the limiting frame 78. The height of the limiting wheel 710 is adjusted through the adjusting bolt 79, thereby controlling the contact condition between the limiting wheel 710 and the spiral strip 61. When the height of the limiting wheel 710 can contact the spiral strip 61, the rotation of the rotating roller 6 can drive the sliding frame 74 to move. When the height of the limiting wheel 710 cannot contact the spiral strip 61, the rotation of the rotating roller 6 cannot drive the sliding frame 74 to move.

[0030] Embodiment 2: Based on the structure of the above Embodiment 1, as Figure 2 and Figures 6-7As shown in the figure, the fixing bracket 4 is rotatably connected with a second rotating shaft 43. A pair of vibration components 5 are connected to both ends of the fixing bracket 4 for driving the test bench 2 to vibrate. The vibration component 5 includes: a rotating rod 51 arranged vertically, the rotating rod 51 is rotatably connected to the fixing bracket 4, and the second rotating shaft 43 drives the rotating rod 51 to rotate through a gear component; an inclined disk 53 fixedly connected to the rotating rod 51; a connecting frame 52, the connecting frame 52 is fixedly connected to the test bench 2. Among them, the connecting frame 52 is fixedly connected with a limiting block 521 that cooperates with the inclined disk 53. A limiting groove 522 is provided on the limiting block 521. A pair of rolling balls 523 are installed on the upper and lower inner sides of the limiting groove 522. The two rolling balls 523 are in contact with the upper and lower surfaces of the inclined disk 53. When the second rotating shaft 43 rotates, it drives the rotating rod 51 to rotate. The rotating rod 51 drives the inclined disk 53 to rotate. When the inclined disk 53 rotates, it drives the test bench 2 to vibrate up and down through the connecting frame 52, so as to perform a vibration test on the power battery.

[0031] As Figure 2 and Figure 8 shown in the figure, the second rotating shaft 43 is fixedly connected with a gear 44, and the first rotating shaft 42 is connected with a rotating member 45 that cooperates with the gear 44. The diameter of the rotating member 45 is larger than the diameter of the gear 44. The rotating member 45 includes: an outer gear ring 451, the outer gear ring 451 meshes with the gear 44; a ratchet wheel 452, the ratchet wheel 452 is fixedly connected with the first rotating shaft 42; a plurality of pawls 453 that cooperate with the ratchet wheel 452 are connected to the inner ring of the outer gear ring 451. An elastic member 454 is connected between the pawl 453 and the inner wall of the outer gear ring 451. Specifically, in implementation: when the first rotating shaft 42 rotates forward, the ratchet wheel 452 drives the outer gear ring 451 to rotate. The outer gear ring 451 drives the second rotating shaft 43 to rotate through the gear 44, and then drives the test bench 2 to vibrate up and down through the vibration component 5; when the first rotating shaft 42 rotates reversely, the ratchet wheel 452 cannot drive the outer gear ring 451 to rotate. At this time, the second rotating shaft 43 remains stationary; by rotating the driving motor 8 forward and backward, the movement of the vibration component 5 is controlled; and if only a vibration test needs to be performed on the power battery, the height of the limiting wheel 710 can be increased by adjusting the bolt 79, so that the limiting wheel 710 is separated from the spiral strip 61. At this time, when the rotating roller 6 rotates, it will not drive the collision component 7 to move, and only a collision test can be performed on the power battery.

[0032] This embodiment also discloses a simulation test method for a power battery. Based on the above test equipment, it includes: Battery fixing: Clamp and fix the power battery on the test bench 2. The power battery is connected to a load through an electric wire to form a stable closed-loop circuit. An ammeter is connected to the circuit. Collision test: The driving motor 8 drives the first rotating shaft 42 to rotate slowly in the positive direction, drives the rotating roller 6 to rotate in the turning direction, drives the collision assembly 7 to move away from the test bench 2. When the sliding frame 74 slides to the end of the rotating roller 6, the sliding frame 74 is instantaneously separated from the rotating roller 6, and the collision assembly 7 hits the power battery under the elastic force of the cylindrical spring 73. Observe the numerical change of the ammeter at the moment of impact; Pressure test: The driving motor 8 drives the first rotating shaft 42 to rotate in the reverse direction, drives the rotating roller 6 to rotate in the reverse direction by a certain angle, and then drives the collision assembly 7 to move towards the test bench 2, so that the collision assembly 7 contacts the side of the power battery and applies pressure to the power battery. Observe the numerical change of the ammeter during the pressure application process; Vibration test: Adjust the bolt 79 to raise the height of the limiting wheel 710 so that the limiting wheel 710 is separated from the spiral bar 61; The driving motor 8 drives the first rotating shaft 42 to rotate in the positive direction, the first rotating shaft 42 drives the second rotating shaft 43 to rotate through the rotating member 45, and the second rotating shaft 43 drives the vibration assembly 5 to move when rotating, thereby driving the power battery to vibrate. Observe the numerical change of the ammeter during the vibration process.

[0033] Finally, it should be noted that: In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It 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.

[0034] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power battery simulation test device, characterized in that, Comprising: A machine base (1), above which a test bench (2) is connected for placing power batteries. A test component (3), the test component (3) includes a fixing frame (4), the fixing frame (4) is fixedly connected to the machine base (1), a pair of brackets (41) are fixedly connected to both ends of the fixing frame (4), collision components (7) are connected to the brackets (41), the two collision components (7) are respectively arranged on both sides of the test bench (2), and a first rotating shaft (42) is rotatably connected between the two brackets (41). A driving motor (8) for driving the first rotating shaft (42) to rotate is installed on the bracket (41), and a pair of rotating rollers (6) are fixedly connected to both ends of the first rotating shaft (42) for driving the collision component (7) to move. The collision component (7) includes two test methods: collision test and pressure test.

2. The power battery simulation test device according to claim 1, characterized in that The collision component (7) includes a sliding frame (74), one end of the sliding frame (74) is fixedly connected to an elastic telescopic rod (76), and one end of the elastic telescopic rod (76) is fixedly connected to a collision plate (75) for colliding with and pressing on the power battery.

3. The power battery simulation test device according to claim 2, characterized in that, A spiral strip (61) is provided on the surface of the rotating roller (6), one end of the spiral strip (61) is fixedly connected to a baffle (62), a limiting frame (78) is connected to the sliding frame (74), and a limiting wheel (710) that cooperates with the spiral strip (61) is rotatably connected to the limiting frame (78).

4. The power battery simulation test device according to claim 3, characterized in that, The bracket (41) is fixedly connected to a sliding rod (71) that is slidably connected to the sliding frame (74), a stop block (72) is fixedly connected to the end of the sliding rod (71), and a cylindrical spring (73) is connected to the surface of the sliding rod (71); and a guide rod (77) that is slidably connected to the sliding frame (74) is fixedly connected to the collision plate (75).

5. The battery simulation test equipment according to claim 4, characterized in that, The limiting frame (78) is slidably connected to the sliding frame (74), and an adjusting bolt (79) is threadedly connected to the sliding frame (74) for driving the limiting frame (78) to move up and down, and the adjusting bolt (79) is rotatably connected to the limiting frame (78).

6. The power battery simulation test device according to claim 5, wherein, A second rotating shaft (43) is rotatably connected to the fixing frame (4), and a pair of vibration components (5) are connected to both ends of the fixing frame (4) for driving the test bench (2) to vibrate; the vibration component (5) includes: a vertically arranged rotating rod (51), the rotating rod (51) is rotatably connected to the fixing frame (4), and the second rotating shaft (43) drives the rotating rod (51) to rotate through a gear assembly; an inclined disk (53), fixedly connected to the rotating rod (51); a connecting frame (52), the connecting frame (52) is fixedly connected to the test bench (2).

7. The power battery simulation test equipment according to claim 6, characterized in that, The connecting frame (52) is fixedly connected to a limiting block (521) that cooperates with the inclined disk (53), a limiting groove (522) is provided on the limiting block (521), and a ball (523) is installed in the limiting groove (522).

8. A power battery simulation test device according to claim 7, characterized in that, The second rotating shaft (43) is fixedly connected with a gear (44), and the first rotating shaft (42) is connected with a rotating member (45) that cooperates with the gear (44); the rotating member (45) includes: an outer gear ring (451), the outer gear ring (451) meshes with the gear (44); a ratchet wheel (452), the ratchet wheel (452) is fixedly connected with the first rotating shaft (42); a plurality of pawls (453) that cooperate with the ratchet wheel (452) are connected to the inner ring of the outer gear ring (451), and an elastic member (454) is connected between the pawl (453) and the inner wall of the outer gear ring (451).

9. The power battery simulation test equipment according to claim 8, characterized in that, A plurality of telescopic columns (21) are connected between the test bench (2) and the machine base (1), and a pair of clamping brackets (9) are connected to both sides of the test bench (2) for fixing the power battery; the clamping bracket (9) is rotatably connected with a threaded rod (10), and the threaded rod (10) is threadedly connected with the test bench (2).

10. A simulation test method for a power battery, using a power battery simulation test device as described in claim 9, characterized in that, Including: Battery fixation: Clamp and fix the power battery on the test bench (2), and the power battery is connected to the load through an electric wire to form a stable closed-loop circuit, and an ammeter is connected to the circuit; Collision test: The driving motor (8) drives the first rotating shaft (42) to rotate forward, drives the rotating roller (6) to rotate in the forward direction, drives the collision assembly (7) to move away from the test bench (2), and when the sliding bracket (74) slides to the end of the rotating roller (6), the sliding bracket (74) is instantaneously separated from the rotating roller (6), and the collision assembly (7) hits the power battery under the elastic force of the cylindrical spring (73), and observe the numerical change of the ammeter at the moment of impact; Pressure test: The driving motor (8) drives the first rotating shaft (42) to rotate in the reverse direction, drives the rotating roller (6) to rotate in the reverse direction, and further drives the collision assembly (7) to move towards the test bench (2), so that the collision assembly (7) contacts the side of the power battery and applies pressure to the power battery, and observe the numerical change of the ammeter during the pressure application process; Vibration test: Adjust the height of the limit wheel (710) by adjusting the bolt (79) so that the limit wheel (710) is separated from the spiral strip (61); the driving motor (8) drives the first rotating shaft (42) to rotate forward, the first rotating shaft (42) drives the second rotating shaft (43) to rotate through the rotating member (45), and the second rotating shaft (43) drives the vibration assembly (5) to move when rotating, thereby driving the power battery to vibrate, and observe the numerical change of the ammeter during the vibration process.

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