A power impact test system for new energy vehicles

Abstract

The application belongs to the technical field of battery accessory testing, and particularly relates to a power impact testing system for new energy vehicles, which comprises a bottom plate, a fixing mechanism for fixing the position of a power supply is arranged on the upper surface of the bottom plate, two supporting plates are fixedly connected to the bottom plate, a guide groove is arranged in the supporting plate, a top plate is fixedly connected to the two supporting plates, a hydraulic cylinder is fixedly installed on the top plate, a driving pressing plate is fixedly connected to the output end of the hydraulic cylinder, and a sliding block is slidably connected to the guide groove. The impact force of an impact head on the power supply can be changed by adjusting the hydraulic pressure of the hydraulic cylinder, the value of the impact force can be accurately measured and read by a pressure measuring plate, the power supply is limited and fixed by the fixing mechanism, so that the power supply is prevented from shaking and deviating when being impacted by the impact head, and the power supply surface can be sprayed with fire extinguishing agent by the fire extinguishing mechanism, so that the power supply is prevented from being deformed and damaged due to fire.

Description

A power supply impulse testing system for new energy vehicles Technical Field

[0001] This invention belongs to the field of battery accessory testing technology, and in particular relates to a power supply impact testing system for new energy vehicles. Background Technology

[0002] With the development of new energy technologies and the improvement of people's environmental awareness, new energy vehicles are gradually replacing traditional fuel vehicles and becoming one of the main means of transportation. The power source of new energy vehicles relies on on-board power supplies, and the performance of on-board power supplies directly affects the quality and safety of new energy vehicles. Therefore, in the production process of power supplies for new energy vehicles, it is necessary to conduct impact tests to test their impact resistance and safety performance.

[0003] A search revealed that National Patent Publication No. CN202111123479.4 discloses an impact testing device for the bottom shell of a new energy vehicle battery, comprising a main body; the main body has a U-shaped structure, with an adjusting component installed at the top, a pushing mechanism installed at the top of the adjusting component, an inclined front end, and an L-shaped plate at the bottom, with a rectangular groove at the bottom of the L-shaped plate; and a control component, which has a rectangular groove inside and is located inside two support rods. When a puncture test is required on the battery bottom shell, the control fixing plate moves outward, allowing for easy connection with the contact head. When the contact head automatically moves downward for impact testing, the tapered rod of the auxiliary component contacts the battery bottom shell first to test puncture resistance, reducing the cost of puncture equipment.

[0004] The above solution has the following shortcomings:

[0005] 1. This method tests the impact of different impact forces on the battery bottom shell by replacing or adding / removing counterweights. The operation is cumbersome, time-consuming and labor-intensive. Furthermore, due to the internal frictional resistance of the device and other factors, it is difficult to accurately obtain the impact force between the contact head and the battery bottom shell, thus affecting the accuracy of the test results.

[0006] 2. This solution cannot effectively fix the power supply under test. When the power supply under test is subjected to a strong impact from the contact head, the power supply is prone to shaking and shifting, which will affect the impact test results.

[0007] 3. If the power supply is deformed or damaged by an impact, it may cause a short circuit or fire. This solution does not have a timely fire extinguishing function and is prone to fire or even explosion accidents, resulting in poor safety performance. Summary of the Invention

[0008] The purpose of this invention is to address the problems of cumbersome operation, low accuracy of test results, and poor safety performance mentioned in the background art, by providing a power supply impact testing system for new energy vehicles.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: a power supply impact testing system for new energy vehicles, comprising a base plate, a fixing mechanism for fixing the position of the power supply is provided on the upper surface of the base plate, two support plates are fixedly connected to the base plate, a guide groove is provided in the support plate, a top plate is fixedly connected to the two support plates, a hydraulic cylinder is fixedly installed on the top plate, a drive pressure plate is fixedly connected to the output end of the hydraulic cylinder, a slider is slidably connected in the guide groove, a lifting block is connected between the two sliders, an impact head is fixedly connected to the bottom of the lifting block, and a fire extinguishing mechanism for preventing the power supply from catching fire is provided on the lifting block;

[0010] The fire extinguishing mechanism includes a rotating rod, a suction cylinder, a threaded groove, a special-shaped nut, a gear, and a rack. The lifting block has a hollow structure. The suction cylinder is fixedly connected inside the lifting block. The two rotating rods are rotatably connected to the side walls on both sides of the suction cylinder. The end of the rotating rod away from the suction cylinder passes through the lifting block, the slider, and the support plate in sequence. The rotating rod and the slider are rotatably connected by a bearing. The gear is mounted on the rotating rod through a one-way bearing. A rack is fixedly connected to the support plate. The gear meshes with the rack. The special-shaped nut is movably sleeved on the rotating rod, and the rotating rod is provided with a threaded groove that matches the special-shaped nut.

[0011] Furthermore, the fire extinguishing mechanism also includes a piston plate, a connecting rod, and a nozzle. Two piston plates are slidably connected inside the liquid suction cylinder. The two piston plates are fixedly connected to two shaped nuts respectively through the connecting rod. The inlet end of the liquid suction cylinder is connected to an external fire extinguishing agent storage tank. The outlet end of the liquid suction cylinder is connected to a nozzle, which is fixedly connected to the bottom of the impact head.

[0012] Furthermore, a pressure measuring plate is fixedly installed on the upper surface of the lifting block, and the pressure measuring plate is located directly below the driving pressure plate.

[0013] Furthermore, a first spring is provided inside the guide groove, with both ends of the first spring connected to the slider and the inner upper wall of the guide groove, respectively.

[0014] Furthermore, the fixing mechanism includes two side plates fixedly connected to the base plate, two positioning plates are provided between the two side plates, and several push rods are fixedly connected to the side walls of the two positioning plates. The push rods are slidably connected through the side plates, and a second spring is provided on the outer sleeve of each push rod. The two ends of the second spring are respectively connected to the positioning plate and the side plate.

[0015] Furthermore, the fixing mechanism also includes a plurality of liquid storage cylinders fixedly connected to the side plate, the plurality of liquid storage cylinders being matched with a plurality of push rods, a sealing plug being slidably connected inside the liquid storage cylinder, and the push rods extending into the liquid storage cylinders and being fixedly connected to the sealing plugs.

[0016] Furthermore, a liquid storage tank is fixedly connected to the support plate. The liquid storage tank and the liquid storage cylinder are filled with electrorheological fluid and are interconnected. Two electrode plates are fixedly connected to the side plate. The two electrode plates are respectively arranged on both sides of several liquid storage cylinders. An on / off mechanism for energizing the two electrode plates is provided in the guide groove.

[0017] Furthermore, the switching mechanism includes a pressure plate slidably connected in the guide groove. The pressure plate is connected to the bottom surface of the guide groove via a third spring. A first contact plate is fixedly installed on the upper surface of the pressure plate. The first contact plate is connected to two electrode plates. A second contact plate matching the first contact plate is fixedly installed on the lower surface of the slider. When the first contact plate and the second contact plate are in contact, the two electrode plates are energized.

[0018] The advantages of this invention are:

[0019] 1. This invention, by setting up a hydraulic cylinder and a pressure measuring plate, allows the lifting block to move downward through the hydraulic cylinder, and the impact head to contact and impact the power source on the bottom plate below, thereby completing the impact test on the power source. The impact force of the impact head on the power source can be changed by adjusting the hydraulic pressure of the hydraulic cylinder, and the impact force value can be accurately measured and read through the pressure measuring plate. Compared with the prior art, it is simple to operate, saves time and effort, and has a high accuracy of test results.

[0020] 2. By setting a fixing mechanism, the present invention can limit and fix the power supply, preventing it from shaking or shifting when subjected to a strong impact from the impact head, thereby further improving the accuracy of the impact test results.

[0021] 3. By setting up an electrode plate and a switching mechanism, when the impact head is pressed down to contact the power source, the electrode plate is energized, causing the electrorheological liquid in the storage tank to change from a liquid state to a solid state, thereby further fixing the position of the power source. When the impact head is lifted, the electrode plate is de-energized, and the electrorheological liquid changes from a solid state to a liquid state. At this time, the two positioning plates can be moved, which makes it easier to remove the power source after the test is completed.

[0022] 4. By setting up a fire extinguishing mechanism, after the impact test of the power supply is completed, the lifting block moves up and resets, and then drives the rotating rod to rotate through the gear rack. The special-shaped nut drives the piston plate to move back and forth in the liquid suction cylinder. The liquid suction cylinder can draw fire extinguishing agent and spray it onto the power supply through the nozzle, preventing the power supply from being deformed and damaged by pressure, which could lead to fire or even explosion, thus improving the safety performance during the test. Attached Figure Description

[0023] Figure 1 is a perspective view of a power supply impact testing system for new energy vehicles provided by the present invention.

[0024] Figure 2 is a schematic diagram of the power supply impulse testing system for new energy vehicles provided by the present invention;

[0025] Figure 3 is a schematic diagram of the internal structure of the lifting block of a power supply impact testing system for new energy vehicles provided by the present invention.

[0026] Figure 4 is a top view of the fixing mechanism of a power supply impact testing system for new energy vehicles provided by the present invention.

[0027] Figure 5 is an enlarged view of point A in Figure 2.

[0028] In the diagram, 1 is the base plate; 2 is the support plate; 3 is the guide groove; 4 is the top plate; 5 is the hydraulic cylinder; 6 is the drive pressure plate; 7 is the slider; 8 is the lifting block; 9 is the impact head; 10 is the rotating rod; 11 is the suction cylinder; 12 is the threaded groove; 13 is the special-shaped nut; 14 is the gear; 15 is the rack; 16 is the piston plate; 17 is the connecting rod; 18 is the nozzle; 19 is the pressure measuring plate; 20 is the first spring; 21 is the side plate; 22 is the positioning plate; 23 is the push rod; 24 is the second spring; 25 is the liquid storage cylinder; 26 is the sealing plug; 27 is the liquid storage tank; 28 is the electrode plate; 29 is the pressure plate; 30 is the third spring; 31 is the first contact plate; 32 is the second contact plate. Detailed Implementation

[0029] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0030] As shown in Figures 1-3, a power supply impact testing system for new energy vehicles includes a base plate 1. A fixing mechanism for fixing the power supply position is provided on the upper surface of the base plate 1. Two support plates 2 are fixedly connected to the base plate 1. Guide grooves 3 are provided within the support plates 2. A top plate 4 is fixedly connected to the two support plates 2. A hydraulic cylinder 5 is fixedly installed on the top plate 4. A drive pressure plate 6 is fixedly connected to the output end of the hydraulic cylinder 5. A slider 7 is slidably connected within the guide grooves 3. A lifting block 8 is connected between the two sliders 7. An impact head 9 is fixedly connected to the bottom of the lifting block 8. The impact force of the impact head 9 on the power supply can be changed by adjusting the hydraulic pressure of the hydraulic cylinder 5. Compared with existing technologies, this system is simple to operate, saves time and effort, and has higher accuracy in test results. A fire extinguishing mechanism is provided on the lifting block 8 to prevent the power supply from catching fire.

[0031] The fire extinguishing mechanism includes a rotating rod 10, a suction cylinder 11, a threaded groove 12, a special-shaped nut 13, a gear 14, and a rack 15. The lifting block 8 has a hollow structure. The suction cylinder 11 is fixedly connected inside the lifting block 8. Two rotating rods 10 are rotatably connected to the side walls on both sides of the suction cylinder 11. The end of the rotating rod 10 away from the suction cylinder 11 passes through the lifting block 8, the slider 7, and the support plate 2 in sequence. The rotating rod 10 and the slider 7 are rotatably connected by a bearing. The gear 14 is mounted on the rotating rod 10 through a one-way bearing. The rack 15 is fixedly connected to the support plate 2. The gear 14 meshes with the rack 15. The special-shaped nut 13 is movably sleeved on the rotating rod 10. The rotating rod 10 is provided with a threaded groove that matches the special-shaped nut 13. The threaded groove 12 consists of two threaded grooves with the same pitch but opposite directions of rotation, similar to the structure of the surface thread of a reciprocating screw. During the rotation of the rotating rod 10, the special-shaped nut 13 can be driven to slide back and forth along the axial direction of the rotating rod 10.

[0032] The fire extinguishing mechanism also includes a piston plate 16, a connecting rod 17, and a nozzle 18. Two piston plates 16 are slidably connected inside the suction cylinder 11. The two piston plates 16 are fixedly connected to two shaped nuts 13 respectively through the connecting rod 17. The inlet end of the suction cylinder 11 is connected to an external fire extinguishing agent storage tank. The outlet end of the suction cylinder 11 is connected to a nozzle 18, which is fixedly connected to the bottom of the impact head 9. The shaped nuts 13 can drive the piston plates 16 to slide back and forth inside the suction cylinder 11 through the connecting rod 10, thereby enabling the suction cylinder 11 to draw fire extinguishing agent from the external fire extinguishing agent storage tank and spray it onto the power source surface through the nozzle 18, thereby playing a fire extinguishing role and preventing dangerous accidents such as fires or even explosions.

[0033] A pressure measuring plate 19 is fixedly installed on the upper surface of the lifting block 8. The pressure measuring plate 19 is located directly below the driving pressure plate 6. The pressure measuring plate 19 can accurately measure and read the value of the impact force of the impact head 9 on the power supply.

[0034] A first spring 20 is provided in the guide groove 3. The two ends of the first spring 20 are connected to the slider 7 and the inner upper wall of the guide groove 3, respectively. The first spring 20 is used to pull the slider 7 and the lifting block 8 to move up and reset.

[0035] The fixing mechanism includes two side plates 21 fixedly connected to the base plate 1, and two positioning plates 22 are arranged between the two side plates 21. Several push rods 23 are fixedly connected to the side walls of the two positioning plates 22. The push rods 23 are slidably connected to the side plates 21. A second spring 24 is sleeved on the push rods 23. The two ends of the second spring 24 are respectively connected to the positioning plate 22 and the side plate 21. The two positioning plates 22 are pressed by the second spring 24 to clamp and fix the two sides of the power supply.

[0036] The fixing mechanism also includes a plurality of liquid storage cylinders 25 fixedly connected to the side plate 21. The plurality of liquid storage cylinders 25 are matched with a plurality of push rods 23. A sealing plug 26 is slidably connected inside the liquid storage cylinder 25. The push rod 23 extends into the liquid storage cylinder 25 and is fixedly connected to the sealing plug 26.

[0037] A liquid storage tank 27 is fixedly connected to the support plate 2. The liquid storage tank 27 and the liquid storage cylinder 25 are filled with electrorheological fluid and are interconnected. The electrorheological fluid is liquid in the absence of electric field or weak electric field environment and solid in the strong electric field environment. Two electrode plates 28 are fixedly connected to the side plate 21. The two electrode plates 28 are respectively arranged on both sides of several liquid storage cylinders 25. A switching mechanism for energizing the two electrode plates 28 is provided in the guide groove 3.

[0038] The switching mechanism includes a pressure plate 29 slidably connected in the guide groove 3. The pressure plate 29 is connected to the bottom surface of the guide groove 3 via a third spring 30. A first contact plate 31 is fixedly installed on the upper surface of the pressure plate 29. The first contact plate 31 is connected to two electrode plates 28. A second contact plate 32 matching the first contact plate 31 is fixedly installed on the lower surface of the slider 7. The second contact plate 32 is connected to the positive terminal of the external power supply. One electrode plate 28 is connected to the first contact plate 31, and the other electrode plate 28 is connected to the negative terminal of the external power supply. When the first contact plate 31 and the second contact plate 32 are in contact, the two electrode plates 28 are connected to the positive and negative terminals of the power supply respectively, thereby generating an electric field between the two electrode plates 28. Under the action of the electric field, the electrorheological liquid in the liquid storage cylinder 25 changes from liquid to solid, further fixing the position of the two positioning plates 22, thereby fixing the position of the power supply.

[0039] The working principle of this embodiment is as follows: The power supply to be tested is placed between two positioning plates 22 on the base plate 1. The two positioning plates 22 are clamped to both sides of the power supply under the elastic force of the second spring 24 to position the power supply. The hydraulic cylinder 5 is activated to drive the driving pressure plate 6 to move down. The driving pressure plate 6 contacts the pressure measuring plate 19, which in turn pushes the lifting block 8 to move down. The lifting block 8 drives the slider 7 to slide down in the guide groove 3, stretching the first spring 20. During the downward movement of the slider 7, the first contact piece 31 contacts the second contact piece 32, so that the two electrode plates 28 are energized, and the current in the liquid storage cylinder 25 changes from liquid to solid, further fixing the position of the two positioning plates 22, and thus fixing the position of the power supply.

[0040] The impact head 9 at the bottom of the lifting block 8 contacts and impacts the power source below, thereby completing the impact test on the power source. The impact force of the impact head 9 on the power source can be changed by adjusting the hydraulic pressure of the hydraulic cylinder 5. The impact force value can be accurately measured and read by the pressure measuring plate 19. Compared with the existing technology, it is simple to operate, saves time and effort, and has a high accuracy of test results.

[0041] After the test is completed, the hydraulic cylinder 5 drives the drive plate 6 to move upward and reset. Then, the lifting block 8 and the slider 7 move upward and reset under the elastic force of the first spring 20. The slider 7 drives the rotating rod 10 to move upward synchronously. Since the gear 14 meshes with the rack 15, the gear 14 rotates synchronously when it moves on the rack 15. In this direction, the one-way bearing is locked, so the gear 14 drives the rotating rod 10 to rotate, which in turn drives the irregular nut 13 to slide back and forth along the axis of the rotating rod 10. Since the irregular nut 13 is fixed to the piston plate 16 and the two irregular nuts 13 move in opposite directions, the two piston plates 16 can be driven to slide back and forth in the suction cylinder. The suction cylinder 11 can draw fire extinguishing agent from the external fire extinguishing agent storage tank and spray it onto the power supply surface through the nozzle 18 to prevent the power supply from being deformed and damaged by pressure, which could lead to fire or even explosion, thus improving the safety performance during the test.

[0042] Furthermore, after the slider moves upward, the first contact piece 31 and the second contact piece 32 lose contact, the two electrode plates 28 are de-energized, the current-transfer fluid changes from solid to liquid, and at this time the two positioning plates 22 can be moved, which makes it easier to remove the power supply after the test is completed.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A power supply impact testing system for new energy vehicles, comprising a base plate (1), characterized in that, The upper surface of the base plate (1) is provided with a fixing mechanism for fixing the power supply position. Two support plates (2) are fixedly connected to the base plate (1). A guide groove (3) is provided in the support plate (2). A top plate (4) is fixedly connected to the two support plates (2). A hydraulic cylinder (5) is fixedly installed on the top plate (4). A drive pressure plate (6) is fixedly connected to the output end of the hydraulic cylinder (5). A slider (7) is slidably connected in the guide groove (3). A lifting block (8) is connected between the two sliders (7). An impact head (9) is fixedly connected to the bottom of the lifting block (8). The lifting block (8) is equipped with a fire extinguishing mechanism to prevent power ignition. The fire extinguishing mechanism includes a rotating rod (10), a liquid suction cylinder (11), a threaded groove (12), a special-shaped nut (13), a gear (14), and a rack (15). The lifting block (8) has a hollow structure. The liquid suction cylinder (11) is fixedly connected inside the lifting block (8). The two rotating rods (10) are respectively rotatably connected to the side walls on both sides of the liquid suction cylinder (11). 10) The end away from the suction cylinder (11) is sequentially connected to the lifting block (8), the slider (7) and the support plate (2), and the rotating rod (10) and the slider (7) are rotatably connected by a bearing. The gear (14) is installed on the rotating rod (10) through a one-way bearing. A rack (15) is fixedly connected to the support plate (2). The gear (14) meshes with the rack (15). The shaped nut (13) is movably sleeved on the rotating rod (10), and the rotating rod (10) is provided with a fitting for the shaped nut. (13) Matching threaded groove; the fire extinguishing mechanism also includes a piston plate (16), a connecting rod (17) and a nozzle (18). Two piston plates (16) are slidably connected inside the liquid suction cylinder (11). The two piston plates (16) are fixedly connected to two shaped nuts (13) respectively through the connecting rod (17). The inlet end of the liquid suction cylinder (11) is connected to the external fire extinguishing agent storage tank. The outlet end of the liquid suction cylinder (11) is connected to a nozzle (18). The nozzle (18) is fixedly connected to the bottom of the impact head (9).

2. The power supply impulse testing system for new energy vehicles according to claim 1, characterized in that, A pressure measuring plate (19) is fixedly installed on the upper surface of the lifting block (8), and the pressure measuring plate (19) is located directly below the driving pressure plate (6).

3. The power supply impulse testing system for new energy vehicles according to claim 1, characterized in that, A first spring (20) is provided in the guide groove (3), and the two ends of the first spring (20) are connected to the slider (7) and the inner upper wall of the guide groove (3), respectively.

4. The power supply impulse testing system for new energy vehicles according to claim 1, characterized in that, The fixing mechanism includes two side plates (21) fixedly connected to the base plate (1), and two positioning plates (22) are provided between the two side plates (21). Several push rods (23) are fixedly connected to the side walls of the two positioning plates (22). The push rods (23) are slidably connected to the side plates (21). A second spring (24) is provided on the outer sleeve of the push rod (23). The two ends of the second spring (24) are respectively connected to the positioning plate (22) and the side plate (21).

5. The power supply impulse testing system for new energy vehicles according to claim 4, characterized in that, The fixing mechanism also includes a plurality of liquid storage cylinders (25) fixedly connected to the side plate (21), the plurality of liquid storage cylinders (25) being matched with a plurality of push rods (23), a sealing plug (26) being slidably connected inside the liquid storage cylinder (25), and the push rod (23) extending into the liquid storage cylinder (25) and fixedly connected to the sealing plug (26).

6. The power supply impulse testing system for new energy vehicles according to claim 5, characterized in that, A liquid storage tank (27) is fixedly connected to the support plate (2). The liquid storage tank (27) and the liquid storage cylinder (25) are filled with electrorheological fluid and are interconnected. Two electrode plates (28) are fixedly connected to the side plate (21). The two electrode plates (28) are respectively arranged on both sides of several liquid storage cylinders (25). A switching mechanism for energizing the two electrode plates (28) is provided in the guide groove (3).

7. The power supply impulse testing system for new energy vehicles according to claim 6, characterized in that, The switching mechanism includes a pressure plate (29) slidably connected in the guide groove (3). The pressure plate (29) is connected to the bottom surface of the guide groove (3) via a third spring (30). A first contact plate (31) is fixedly installed on the upper surface of the pressure plate (29). The first contact plate (31) is connected to two electrode plates (28). A second contact plate (32) matching the first contact plate (31) is fixedly installed on the lower surface of the slider (7). When the first contact plate (31) and the second contact plate (32) are in contact, the two electrode plates (28) are energized.

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