A test device for the battery of an autonomous vehicle

Abstract

The present invention provides a test device for the battery of an autonomous vehicle, comprising: a test bench, a horizontal test component and a vertical test component; the horizontal test component is installed on the test bench, the horizontal test component comprises a mounting plate, a hydraulic cylinder, a mounting frame, a motor, a pressure roller and a push rod, the hydraulic cylinder is installed at one end of the test bench through the mounting plate, the mounting frame is installed at the output end of the hydraulic cylinder, the pressure roller is rotatably mounted on the mounting frame, the motor is installed on the mounting frame through a bracket, and the motor is used to drive the pressure roller to rotate. The test device for the battery of an autonomous vehicle provided by the present invention installs a push rod on one side of the pressure roller, and the detection surface of the pressure roller can be switched in conjunction with the motor, and the side of the pressure roller provided with the push rod is used for needle puncture detection, and the other side of the pressure roller is used for extrusion test, so that the extrusion test and the needle puncture test can be realized by using one test device, simplifying the equipment.

Description

Technical Field

[0001] The present invention relates to the field of battery testing, and in particular to a battery testing device for an autonomous driving vehicle. Background Art

[0002] An autonomous vehicle, also known as a driverless car, is an intelligent car that senses the road environment through an on-board sensor system, automatically plans a driving route and controls the vehicle to reach a predetermined destination. In order to meet the requirements of rapid response, the driving components of an autonomous vehicle usually use motors as driving devices. The operation of motors and various sensor components on the vehicle requires batteries as a power source. As a power source for autonomous vehicles, batteries must meet safety standards, so the power batteries of autonomous vehicles need to undergo various tests before use.

[0003] In the prior art, the testing items for the power battery of autonomous vehicles include extrusion test and puncture test, which simulate whether the power battery will have thermal runaway after being impacted and squeezed or punctured by sharp objects, causing dangerous situations such as fire and explosion. At present, the extrusion test and puncture test of power batteries need to be performed on different equipment, that is, the extrusion test equipment and puncture test equipment need to be set up accordingly. There is a lack of test equipment that can complete different test items on one device, thereby simplifying the test equipment.

[0004] Therefore, it is necessary to provide a battery testing device for an autonomous driving vehicle to solve the above technical problems. Summary of the invention

[0005] The present invention provides a test device for the battery of an autonomous driving vehicle, which solves the problem in the prior art that there is a lack of test devices that can complete different test items on one device.

[0006] In order to solve the above technical problems, the present invention provides a test device for the battery of an autonomous driving vehicle, comprising: a test bench, a horizontal test component and a vertical test component;

[0007] The horizontal detection assembly is installed on the detection platform, and the horizontal detection assembly includes a mounting plate, a hydraulic cylinder, a mounting frame, a motor, a pressure roller and a push rod. The hydraulic cylinder is mounted on one end of the detection platform through the mounting plate, the mounting frame is mounted on the output end of the hydraulic cylinder, the pressure roller is rotatably mounted on the mounting frame, the motor is mounted on the mounting frame through a bracket, the motor is used to drive the pressure roller to rotate, and the push rod is vertically mounted on the pressure roller;

[0008] A limit plate is installed at the other end of the detection table;

[0009] The vertical detection component is suspended above the detection platform and is located between the horizontal detection component and the limiting plate.

[0010] Preferably, a positioning rod is installed on the mounting frame, and one end of the positioning rod away from the mounting frame passes through the mounting plate.

[0011] Preferably, the battery testing equipment of the autonomous driving vehicle also includes a supporting plate, a horizontal moving device, a box body and a limit arm, wherein the box body is installed at the bottom of the detection platform and is located below the vertical detection component, a placement groove is provided at the top of the detection platform, and the placement groove is communicated with the top opening of the box body, the bottom of the supporting plate is slidably installed inside the placement groove, and the top of the supporting plate extends to the outside of the placement groove, a concave portion is provided on one side of the supporting plate, and a baffle is provided on the other side of the supporting plate, the limit arm is installed on the limit plate and suspended at one end of the supporting plate, and the placement groove is open at one end close to the limit arm, and the horizontal moving device is used to drive the supporting plate to slide along the placement groove.

[0012] Preferably, a water inlet pipe is connected and installed on the box body.

[0013] Preferably, the horizontal moving device includes a tooth plate and a driving arm, the tooth plate is slidably mounted on the detection platform, one end of the driving arm is connected to one end of the tooth plate, and the other end of the driving arm is detachably connected to the supporting plate, and the horizontal detection assembly also includes a gear, which is mounted on the bottom of the pressure roller through a transmission shaft, and when the hydraulic cylinder drives the mounting frame to move a preset distance toward the side away from the placement groove, the gear engages with the tooth plate.

[0014] Preferably, the limiting arm comprises a connecting plate and a plurality of limiting shafts, the connecting plate is mounted on the limiting plate, and the connecting plate is suspended above the supporting plate, and the plurality of limiting shafts are installed at intervals at the bottom of the connecting plate.

[0015] Preferably, the battery testing equipment for the autonomous driving vehicle further includes a pushing assembly, and when the testing of the battery is completed, the pushing assembly is used to remove the battery from the supporting plate.

[0016] Preferably, the pushing assembly comprises a pushing plate and a pushing arm, wherein the pushing plate is suspended above one end of the bearing plate, the pushing arm connects the pushing plate and the other end of the tooth plate, and a groove is provided on the pushing plate at a position corresponding to the limiting shaft;

[0017] A sliding rod is installed at one end of the tooth plate, and one end of the driving arm is sleeved on the sliding rod. The horizontal moving device also includes a trapezoidal plate, which is installed on the detection table. The trapezoidal plate supports the driving arm, and the supporting plate is provided with a slot on the side facing the driving arm. The other end of the driving arm is inserted into the slot. A rectangular opening is opened on a corner of the supporting plate close to the slot, and the rectangular opening is connected to the lower side wall of the slot. When the driving arm is located at the lowest end of the curved surface of the trapezoidal plate, the top of the driving arm is lower than the top wall of the rectangular opening.

[0018] Preferably, the transmission shaft includes a driving shaft, a first square shaft and a second square shaft, the pressure roller includes a roller portion and a mounting tube, the roller portion is fixedly mounted on the mounting tube, the top end of the driving shaft is connected to the output shaft of the motor, the bottom end of the driving shaft extends to the interior of the mounting tube, the bottom end of the mounting tube and the bottom end of the driving shaft are respectively provided with a square opening and a square groove, the bottom end of the first square shaft is installed on the top end of the second square shaft, the top end of the first square shaft is plugged into the square groove, the top end of the second square shaft is plugged into the square opening, the gear is installed on the second square shaft, the cross-sectional side length of the square opening is greater than the cross-sectional diagonal value of the second square shaft, a ball is provided at the bottom end of the second square shaft, the ball abuts against the detection table, and a trapezoidal groove is provided at the top of the detection table and on one side of the gear.

[0019] Preferably, a supporting frame is installed on the detection platform and on one side close to the limiting arm.

[0020] Compared with the related art, the battery testing equipment for the autonomous driving vehicle provided by the present invention has the following beneficial effects:

[0021] The present invention provides a test device for the battery of an autonomous driving vehicle. When performing an extrusion test, the battery to be tested is placed on a test table, and the battery to be tested is located between a pressure roller and a limit plate. When performing an extrusion test, a hydraulic cylinder pushes a mounting frame to drive the pressure roller to move toward the battery to be tested, and an extrusion test is performed on one side of the battery to be tested. When performing a needle puncture test on the battery to be tested, a motor drives the pressure roller to rotate 180 degrees, so that a push rod on the pressure roller faces the battery to be tested, and the hydraulic cylinder pushes the mounting frame, and the pressure roller drives the push rod to move toward the battery to be tested, and punctures the battery to be tested, thereby realizing the needle puncture test.

[0022] By installing a push rod on one side of the pressure roller and cooperating with a motor, the detection surface of the pressure roller can be switched. The side of the pressure roller provided with the push rod is used for a needle puncture test, and the other side of the pressure roller is used for an extrusion test. Thus, the extrusion test and the needle puncture test can be realized by using one detection device, thereby simplifying the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A schematic structural diagram of a preferred embodiment of a battery testing device for an autonomous driving vehicle provided by the present invention;

[0024] Figure 2 Figure 1 A front view of a test device for a battery of an autonomous vehicle provided by the present invention;

[0025] Figure 3 for Figure 1 A schematic structural diagram of another perspective of a battery testing device for an autonomous vehicle shown;

[0026] Figure 4 A schematic diagram of a partial structure of a battery testing device for an autonomous driving vehicle provided by the present invention;

[0027] Figure 5 A schematic diagram of the horizontal moving device provided by the present invention driving the carrying plate to separate from the top opening portion of the box body;

[0028] Figure 6 A schematic diagram of a state where a tested battery provided by the present invention falls into a box;

[0029] Figure 7 A schematic diagram of the structure of the horizontal moving device provided by the present invention;

[0030] Figure 8 A schematic diagram of the slot and rectangular opening provided by the present invention;

[0031] Fig. 9 A schematic diagram of a state in which one end of the driving arm provided by the present invention is located at the lowest end of the inclined surface of the trapezoidal plate;

[0032] Fig.10 A schematic diagram of a state in which one end of the driving arm provided by the present invention is located at the highest end of the inclined surface of the trapezoidal plate;

[0033] Fig.11 A schematic diagram of a state in which a pushing assembly provided by the present invention pushes a tested battery out of a carrying plate;

[0034] Fig.12 A schematic diagram of the assembly state of the second square shaft and the square mouth provided by the present invention;

[0035] Fig.13 This is a schematic diagram of a state in which the second square axis provided by the present invention is separated from the square opening.

[0036] Numbers in the figure:

[0037] 1. Testing table; 101. Limiting plate; 102. Placement slot; 103. Carrying frame; 104. Trapezoidal slot;

[0038] 2. Level detection assembly; 21. Mounting plate; 22. Hydraulic cylinder; 23. Mounting frame; 24. Motor; 25. Pressing roller; 26. Push rod; 27. Gear;

[0039] 231, positioning rod; 251, roller; 252, mounting tube; 253, square opening;

[0040] 3. Vertical detection component;

[0041] 4. Loading plate; 41. Concave platform; 42. Baffle; 43. Slot; 44. Rectangular opening;

[0042] 5. Horizontal moving device; 51. Tooth plate; 52. Driving arm; 53. Trapezoidal plate; 511. Sliding rod;

[0043] 6. Box body; 61. Water inlet pipe fittings;

[0044] 7. Pushing assembly; 71. Pushing plate; 72. Pushing arm; 711. Groove;

[0045] 8. Limiting arm; 81. Connecting plate; 82. Limiting shaft;

[0046] 9, transmission shaft; 91, driving shaft; 92, first square shaft; 93, second square shaft; 931, ball bearing; 911, square groove;

[0047] 10. Battery to be tested. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] The present invention provides a test device for a battery of an autonomous driving vehicle.

[0050] Please refer to Figures 1 to 3 , In one embodiment of the present invention, the test equipment for the battery of the autonomous driving vehicle comprises: a test bench 1, a horizontal test component 2 and a vertical test component 3;

[0051] The horizontal detection component 2 is installed on the detection platform 1, and the horizontal detection component 2 includes a mounting plate 21, a hydraulic cylinder 22, a mounting frame 23, a motor 24, a pressure roller 25 and a push rod 26. The hydraulic cylinder 22 is mounted on one end of the detection platform 1 through the mounting plate 21, and the mounting frame 23 is mounted on the output end of the hydraulic cylinder 22. The pressure roller 25 is rotatably mounted on the mounting frame 23. The motor 24 is mounted on the mounting frame 23 through a bracket. The motor 24 is used to drive the pressure roller 25 to rotate, and the push rod 26 is vertically mounted on the pressure roller 25;

[0052] A limit plate 101 is installed at the other end of the detection platform 1;

[0053] The vertical detection component 3 is suspended above the detection platform 1 and is located between the horizontal detection component 2 and the limiting plate 101 .

[0054] In this embodiment, the vertical detection component 3 and the horizontal detection component 2 have the same structural composition. The difference is that the length of the pressure roller 25 in the vertical detection component 3 is longer than that of the pressure roller 25 in the horizontal detection component 2, and the length of the mounting frame 23 is different. The mounting frame 23 is adapted to the corresponding pressure roller 25, and the mounting plate 21 in the vertical detection component 3 is a support frame. The upper end of the support frame is suspended above the detection table 1, and the lower end is fixed to the detection table 1. The hydraulic cylinder 22 in the vertical detection component 3 is installed on the support frame, so that the entire vertical detection component 3 is suspended above the detection table 1. The vertical detection component 3 is mainly used to perform extrusion or needle penetration test from the top surface of the battery 10 to be tested, and the horizontal detection component 2 performs extrusion or needle penetration test from the side of the battery 10 to be tested.

[0055] When performing the extrusion test, the battery 10 to be tested is placed on the test table 1, and the battery 10 to be tested is located between the pressure roller 25 and the limit plate 101. First, the battery 10 to be tested is subjected to an extrusion test through the horizontal detection component 2. The hydraulic cylinder 22 pushes the mounting frame 23 to drive the pressure roller 25 to move toward the battery 10 to be tested. One side of the battery 10 to be tested is abutted by the limit plate 101, and the other side is squeezed by the pressure roller 25. The hydraulic cylinder 22 applies a preset thrust to the battery 10 to be tested, or after moving a preset distance, observe the damage of the battery 10 to be tested, whether thermal runaway, fire, etc. occur. When abnormal conditions such as fire do not occur, the electrical performance testing equipment can also be connected to detect changes in electrical performance indicators of the battery 10 to be tested. By detecting the electrical performance indicators of the battery, it is assisted to determine whether the battery meets the standards.

[0056] When the battery 10 to be tested is subjected to an extrusion test in the vertical direction, the battery 10 to be tested is placed under the vertical detection component 3. At this time, the hydraulic cylinder 22 in the vertical detection component 3 pushes the mounting frame 23 downward, driving the corresponding pressing roller 25 to move downward to squeeze downward from the top surface of the battery 10 to be tested. When the hydraulic cylinder 22 applies a preset thrust to the battery 10 to be tested, or moves a preset distance, the condition of the battery 10 to be tested is observed in the same way, and the electrical performance detection equipment can be used to detect the changes in the electrical performance of the battery after the current test, to assist in determining whether the battery meets the standards.

[0057] The battery 10 to be tested for the horizontal compression test and the vertical compression test can be one battery or two different batteries according to the test conditions. For example, if the battery to be tested for the lateral compression does not have thermal runaway after the lateral compression, the top surface compression test can be performed to detect the condition of the battery when it is compressed on different surfaces.

[0058] When the battery 10 to be tested is subjected to a needle penetration test, the motor 24 drives the pressure roller 25 to rotate 180 degrees. At this time, the top rod 26 in the horizontal detection assembly 2 faces the limit plate 101, and the top rod 26 in the vertical detection assembly 3 faces the detection platform 1.

[0059] During the test, similarly, the battery 10 to be tested is placed between the horizontal detection assembly 2 and the limit plate 101, the hydraulic cylinder 22 pushes the mounting frame 23, the pressure roller 25 drives the push rod 26 to move toward the battery 10 to be tested, and pierces the side of the battery 10 to be tested, and then observes whether the battery has thermal runaway and fire after the test;

[0060] Similarly, the top surface of the battery 10 to be tested is punctured by the push rod 26 in the vertical detection assembly 3, and then the battery is observed to see whether thermal runaway or fire occurs after the test;

[0061] By installing a push rod 26 on one side of the pressure roller 25 and cooperating with the motor 24, the detection surface of the pressure roller 25 can be switched. The puncture test is performed on the side of the pressure roller 25 provided with the push rod 26, and the extrusion test is performed on the other side of the pressure roller 25. Thus, the extrusion test and the puncture test can be realized by using one detection device, thereby simplifying the equipment.

[0062] Preferably, a temperature detection device is provided on the detection platform 1 to detect the temperature change of the battery during the squeezing and acupuncture process, so as to better judge whether thermal runaway occurs in the battery.

[0063] In the extrusion test, the battery is qualified when there is no thermal runaway, fire, explosion, and the deformation amount meets the requirements;

[0064] During the puncture test, the battery passes if there is no thermal runaway, fire, explosion, etc. after puncture.

[0065] In this embodiment, the first contact end of the ejector rod 26 with the battery to be tested 10 is conical, so as to facilitate puncturing the battery to be tested 10 .

[0066] The number of pressure rollers 25 in the horizontal detection component 2 and the vertical detection component 3 is not less than one. In the present embodiment, multiple pressure rollers 25 are provided in the horizontal detection component 2 and the vertical detection component 3, and are arranged in a row, so that multiple positions of the battery 10 to be tested can be squeezed tested simultaneously.

[0067] The motor 24 is connected to one of the pressure rollers 25 , and one side of the pressure roller 25 on which the push rod 26 is mounted is set to a horizontal plane, so as to facilitate setting the length of the push rod 26 and ensure that the push rod 26 will not be blocked by other pressure rollers 25 when the pressure roller 25 rotates.

[0068] As an optional method of this embodiment, there are multiple push rods 26 in the horizontal detection component 2 and the vertical detection component 3, and one or more push rods are arranged on each pressure roller 25. In this embodiment, the pressure rollers 25 arranged in a row can be connected by a transmission member, and the transmission member can be a combination of a gear and a toothed plate, a synchronous wheel and a synchronous belt, or a pulley and a belt, etc.

[0069] The push rod 26 is detachably connected to the pressure roller 25 , and different numbers of push rods 26 can be installed as needed. For example, a threaded hole is provided on the pressure roller 25 , and a threaded surface is correspondingly provided on the end of the push rod 26 .

[0070] See also Figure 2 A positioning rod 231 is installed on the mounting frame 23 , and one end of the positioning rod 231 away from the mounting frame 23 passes through the mounting plate 21 .

[0071] By setting a positioning rod 231, the moving direction of the mounting frame 23 is limited so that the pressing roller 25 can squeeze the battery 10 to be tested more stably;

[0072] Wherein, both the horizontal detection component 2 and the vertical detection component 3 are provided with positioning rods 231, and multiple positioning rods 231 are provided.

[0073] See also Figure 1 , Figure 3 and Figure 4As a preferred embodiment of the present invention, the battery testing equipment for the autonomous driving vehicle further comprises a supporting plate 4, a horizontal moving device 5, a box body 6 and a limiting arm 8. The box body 6 is mounted at the bottom of the test bench 1 and is located below the vertical detection assembly 3. A placement groove 102 is provided at the top of the test bench 1. The placement groove 102 is communicated with the top opening of the box body 6. The bottom of the supporting plate 4 is slidably mounted inside the placement groove 102. The top of the supporting plate 4 extends to the outside of the placement groove 102. A concave platform portion 41 is provided on one side of the supporting plate 4. A baffle plate 42 is provided on the other side of the supporting plate 4. The limiting arm 8 is mounted on the limiting plate 101 and suspended at one end of the supporting plate 4. The placement groove 102 is open at one end close to the limiting arm 8. The horizontal moving device 5 is used to drive the supporting plate 4 to slide along the placement groove 102.

[0074] In this embodiment, in the extrusion or puncture test, the battery 10 to be tested is placed on the carrier plate 4, one side of the battery 10 to be tested abuts against the baffle 42, the baffle 42 abuts against the limit plate 101, and the other side of the battery 10 to be tested is suspended above the concave platform 41. By setting the concave platform 41, when performing the horizontal side extrusion test, the bottom of the pressing roller 25 is higher than the concave platform 41, so that the pressing roller 25 can enter the concave platform 41 to squeeze the side of the battery 10 to be tested. The area of ​​the placement groove 102 is larger than the top opening of the box body 6, and the top opening of the box body 6 is larger than the area of ​​the battery 10 to be tested. When the battery 10 to be tested is placed on the carrier plate 4, one side abuts against the baffle 42, and one end contacts the limit arm 8. At this time, the battery 10 to be tested is aligned with the top opening of the box body 6.

[0075] Please refer to Figure 6 When the tested battery has thermal runaway and starts to smoke and catch fire, the horizontal moving device 5 pushes the supporting plate 4 to move toward one side of the limiting arm 8. Since the battery 10 to be tested is blocked by the limiting arm 8, it will not move with the supporting plate 4. When the supporting plate 4 moves to be separated from more than half of the tested battery, the center of gravity of the tested battery is not supported, and it falls downward into the box 6. Then, the horizontal moving device 5 drives the supporting plate 4 to move in the opposite direction to seal the top opening of the box 6, thereby preventing the battery from catching fire or even exploding and damaging the test equipment and personnel, thereby improving the safety of the test equipment.

[0076] Slide grooves are provided inside the placement groove 102 and on both sides of the top opening of the box body 6 , and sliding blocks are provided on both sides of the bottom of the carrying plate 4 , and the sliding blocks are slidably assembled with the slide grooves.

[0077] See also Figure 2 As a preferred embodiment of the present invention, a water inlet pipe 61 is connected and installed on the box body 6 .

[0078] By providing the water inlet pipe 61 , when the battery on fire after the test is moved into the interior of the box 6 , water can be added into the box 6 through the water inlet pipe 61 to accelerate the extinguishing of the battery on fire.

[0079] The water inlet end of the water inlet pipe 61 is connected to the water outlet pipe of the water pump, and the water inlet end of the water pump is connected to the water storage container through a pipeline. Alternatively, the water inlet pipe 61 is directly connected to a faucet or other equipment through a pipeline.

[0080] Fire fighting equipment such as carbon dioxide can also be provided on the box body 6 .

[0081] Preferably, a detachable door is provided on one side of the box body 6, and when the door is closed, it is sealed with the box body 6. By providing the door, the battery after burning inside the box body 6 can be cleaned up by removing the door.

[0082] As an optional method of this embodiment, the box 6 can be used to test the corrosion and sealing properties of the battery 10 to be tested. For example, seawater is added into the box 6, and then the battery 10 to be tested is placed in the box 6 for corrosion and sealing properties tests.

[0083] See also Figure 4 As an optional method of this embodiment, the horizontal moving device 5 includes a toothed plate 51 and a driving arm 52, the toothed plate 51 is slidably installed on the detection platform 1, one end of the driving arm 52 is connected to one end of the toothed plate 51, and the other end of the driving arm 52 is detachably connected to the supporting plate 4, the horizontal detection assembly 2 also includes a gear 27, and the gear 27 is installed at the bottom of the pressure roller 25 through a transmission shaft 9. When the hydraulic cylinder 22 drives the mounting frame 23 to move a preset distance toward the side away from the placement groove 102, the gear 27 engages with the toothed plate 51.

[0084] Please refer to Figure 5 and Figure 6In this embodiment, after the horizontal detection component 2 performs an extrusion test or a needle puncture test, the hydraulic cylinder 22 drives the mounting frame 23 to move a preset distance toward a side away from the battery to be tested 10, that is, the pressure roller 25 or the push rod 26 is separated from the battery to be tested 10, and a gap is left with the carrying plate 4, at which time the gear 27 is meshed with the toothed plate 51; when the tested battery smokes and catches fire, the motor 24 drives the pressure roller 25 to rotate, and the pressure roller 25 drives the gear 27 to rotate clockwise through the transmission shaft 9, and the gear 27 acts on the toothed plate 51 to push the toothed plate 51 to move in the direction of the limit arm 8, and the toothed plate 51 drives the carrying plate 4 to follow the movement through the driving arm 52, so that the carrying plate 4 is separated from the tested battery, and when the separated part exceeds half, the battery to be caught fire falls into the box body 6, and then the motor 24 rotates in the opposite direction, and the carrying plate 4 seals the box body 6 again, so that the motor 24 in the horizontal detection component 2 can be used as a drive to complete the movement of the driving carrying plate 4, and no additional driving components are required.

[0085] When the horizontal detection assembly 2 is in a non-detection state, the pressure roller 25 or the push rod 26 is separated from the carrier plate 4, and the gear 27 is also separated from the tooth plate 51, but at this time the teeth on the gear 27 are aligned with the tooth grooves on the tooth plate 51. Therefore, when the motor 24 switches the use state of the pressure roller 25 and the push rod 26, the gear 27 will not interact with the tooth plate 51;

[0086] In one embodiment, when the motor 24 switches the pressure roller 25 to rotate to the push rod 26 state, when the gear 27 needs to be meshed with the tooth plate 51, the motor 24 rotates in the reverse direction to switch the push rod 26 to the pressure roller 25 state, so that the gear 27 rotates to the initial state, and the teeth of the gear 27 are aligned with the tooth grooves of the tooth plate 51 again;

[0087] In another example, the number of teeth of the gear 27 is set to a multiple of two, so that each time the motor 24 rotates one hundred and eighty degrees to switch the detection component from the pressure roller 25 to the push rod 26, or from the push rod 26 to the pressure roller 25, the teeth of the gear 27 are aligned with the tooth grooves of the tooth plate 51.

[0088] When the vertical detection assembly 3 is working, the hydraulic cylinder 22 in the horizontal detection assembly 2 can drive the mounting frame 23 in advance to drive the gear 27 under the pressure roller 25 to engage with the toothed plate 51, so as to prepare for driving the bearing plate 4 to move.

[0089] In other embodiments, the horizontal moving device 5 includes a fixing frame and an electric push cylinder. The electric push cylinder is installed on a side of the detection platform 1 close to the limiting arm 8 through the fixing frame, and the output end of the electric push cylinder is connected to the supporting plate 4.

[0090] See also Figure 3As an optional method of this embodiment, the limiting arm 8 includes a connecting plate 81 and a plurality of limiting shafts 82, the connecting plate 81 is installed on the limiting plate 101, and the connecting plate 81 is suspended above the supporting plate 4, and the plurality of limiting shafts 82 are installed at intervals at the bottom of the connecting plate 81.

[0091] By setting multiple limiting axes 82, multiple positions of the battery 10 to be tested can be limited, thereby improving the stability of the limitation. Limiting the battery 10 to be tested by multiple limiting axes 82 facilitates the subsequent setting of the width of the push plate 71. The push plate 71 can be set to be wide enough except for the position corresponding to the limiting axis 82, thereby increasing the contact area with the battery 10 to be tested, thereby improving the stability when pushing the battery 10 to be tested to move.

[0092] The diameter of the limiting shaft 82 is the same as the width of the connecting plate 81 .

[0093] As another optional manner of this embodiment, the limiting arm 8 may also be a rectangular plate structure with a certain width.

[0094] As an optional method of this embodiment, when testing the battery pack of the self-driving car, the battery pack is heavy and can be transported to the test bench 1 by a hydraulic transport trolley. The hydraulic transport trolley includes a frame, a placement plate, a lifting cylinder, a horizontal push cylinder and a push plate. Rollers are arranged at the bottom of the frame. The lifting cylinder is vertically mounted on the frame, the placement plate is mounted on the output end of the lifting cylinder, the horizontal push cylinder is horizontally mounted on the placement plate, and the push plate is mounted on the output end of the horizontal push cylinder. During transportation, the battery pack is placed on the placement plate, and then the trolley is moved to one side of the test bench 1. The placement plate is aligned with the load-bearing plate 4. The lifting cylinder pushes up the placement plate to align the battery 10 to be tested with the load-bearing plate 4. Then the horizontal push cylinder pushes the push plate. The push plate pushes the battery 10 to be tested from the placement plate to the load-bearing plate 4, thereby facilitating the loading of the battery 10 to be tested onto the load-bearing plate 4.

[0095] Of course, a forklift can be used in conjunction with manpower, or a lifting device can be used to load the battery 10 to be tested onto the carrying plate 4 .

[0096] See also Figure 3 , Figure 4 and Fig.11 In this embodiment, the battery testing equipment of the autonomous driving vehicle further includes a pushing component 7. When the test battery 10 is tested, the pushing component 7 is used to remove the test battery 10 from the supporting plate 4.

[0097] By setting up the pushing component 7, after the test battery 10 is tested and there is no thermal runaway, fire or other conditions, the tested battery 10 can be pushed to the above-mentioned placement table to complete the unloading work, or pushed to a forklift to complete the unloading work, thereby facilitating the unloading of the test battery 10.

[0098] See also Figure 3 , Figure 4 , Figure 7 and Figure 8 As an optional method in this embodiment, the pushing assembly 7 includes a push plate 71 and a push arm 72, the push plate 71 is suspended above one end of the bearing plate 4, the push arm 72 connects the push plate 71 and the other end of the tooth plate 51, and a groove 711 is provided on the push plate 71 at a position corresponding to the limit shaft 82;

[0099] A sliding rod 511 is installed at one end of the tooth plate 51, and one end of the driving arm 52 is sleeved on the sliding rod 511. The horizontal moving device 5 also includes a trapezoidal plate 53, and the trapezoidal plate 53 is installed on the detection table 1. The trapezoidal plate 53 supports the driving arm 52. The supporting plate 4 is provided with a slot 43 on the side facing the driving arm 52, and the other end of the driving arm 52 is inserted into the slot 43. A rectangular opening 44 is opened at a corner of the supporting plate 4 close to the slot 43, and the rectangular opening 44 is connected to the lower side wall of the slot 43. When the driving arm 52 is located at the lowest end of the curved surface of the trapezoidal plate 53, the top of the driving arm 52 is lower than the top wall of the rectangular opening 44.

[0100] Please refer to Fig.11 When the tested battery is in a state without thermal runaway, the motor 24 rotates counterclockwise, and the gear 27 rotates counterclockwise to act on the toothed plate 51, driving the toothed plate 51 to move toward the side away from the limit arm 8, and the toothed plate 51 drives the push plate 71 through the push arm 72 to push the tested battery to gradually move out of the carrying plate 4, wherein the hydraulic conveying trolley as mentioned above can be moved to the position where the tested battery is discharged, and the push plate 71 pushes the battery to move to the placement plate to complete the unloading.

[0101] During this process, the tooth plate 51 drives the driving arm 52 to move toward the rectangular opening 44 on the carrying plate 4 , but does not drive the carrying plate 4 to move.

[0102] When the tested battery is in a state of thermal runaway, fire, etc., the motor 24 rotates clockwise, the gear 27 rotates clockwise, driving the toothed plate 51 to move toward one side of the limit arm 8, driving the arm 52 to act on the groove wall of one side of the slot 43, pushing the carrier plate 4 to move toward the limit arm 8, and the tested battery is blocked by the limit arm 8 and will not move with it. When more than half of the tested battery is separated from the carrier plate 4, the center of gravity of the tested battery tilts and falls into the interior of the box 6 because the center of gravity is not supported;

[0103] During this process, the driving arm 52 moves along the lowest end of the inclined surface of one end of the trapezoidal plate 53 to the uppermost end. Fig. 9 and Fig.10 At this time, the driving arm 52 will move upward along the slide bar 511, so that the driving arm 52 moves upward to the top of the slot 43 and is located above the rectangular opening 44, so that when the motor 24 rotates in the reverse direction, the driving arm 52 can act on the other side of the slot 43, thereby pushing the bearing plate 4 to block the top opening of the box body 6 again;

[0104] Therefore, by controlling the use status of the motor 24, it is possible to switch the horizontal detection component 2 to the extrusion test state or the puncture test state, drive the horizontal moving device 5 to separate the supporting plate 4 from the top opening of the box body 6 or seal the top opening of the box body 6, and cooperate with the horizontal moving device 5 to drive the pushing component 7 to push the battery unloading after the test.

[0105] Among them, before the driving arm 52 moves to the lowest end of the inclined surface at one end of the trapezoidal plate 53, the driving arm 52 has driven the supporting plate 4 to seal the top opening of the box body 6, that is, when the driving arm 52 and the side wall on the other side of the slot 43 still have sufficient contact area, the driving arm 52 drives the supporting plate 4 to seal the top of the box body 6. When the driving arm 52 moves to the lowest end of the trapezoidal plate 53, the driving arm 52 drops to the lowest point of the slot 43 and is aligned with the rectangular opening 44.

[0106] For example, before the driving arm 52 moves to the inclined surface of the trapezoidal plate 53 or moves to the middle of the inclined surface, the supporting plate 4 has already blocked the top opening of the box body 6. When the driving arm 52 moves to the lowest end of the inclined surface of the trapezoidal plate 53, the supporting plate 4 abuts against the groove wall of the placement groove 102.

[0107] As another optional method in this embodiment, the pushing component 7 includes an electric push cylinder, a push plate and a fixed frame. The electric push cylinder is installed on the side of the detection platform 1 close to the limit arm 8, the push plate is installed at the output end of the electric push cylinder, and the push plate is suspended on the supporting plate 4. A groove 711 is also provided at the position corresponding to the limit shaft 82.

[0108] See also Fig.12 and Fig.13As an optional method in this embodiment, the transmission shaft 9 includes a driving shaft 91, a first square shaft 92 and a second square shaft 93. The pressure roller 25 includes a roller portion 251 and a mounting tube 252. The roller portion 251 is fixedly mounted on the mounting tube 252. The top end of the driving shaft 91 is connected to the output shaft of the motor 24. The bottom end of the driving shaft 91 extends to the inside of the mounting tube 252. The bottom ends of the mounting tube 252 and the bottom ends of the driving shaft 91 are respectively provided with a square opening 253 and a square groove 911. The first square shaft The bottom end of 92 is installed on the top end of the second square shaft 93, the top end of the first square shaft 92 is plugged into the square groove 911, the top end of the second square shaft 93 is plugged into the square opening 253, the gear 27 is installed on the second square shaft 93, the cross-sectional side length value of the square opening 253 is greater than the cross-sectional diagonal value of the second square shaft 93, and the bottom end of the second square shaft 93 is provided with a ball 931, the ball 931 is in contact with the detection platform 1, and a trapezoidal groove 104 is provided on the top of the detection platform 1 and on one side of the gear 27.

[0109] When it is necessary to switch the detection state of the horizontal detection component 2, the motor 24 drives the driving shaft 91 to rotate, and the driving shaft 91 drives the second square shaft 93 to rotate through the first square shaft 92. The second square shaft 93 cooperates with the square mouth 253 to drive the mounting tube 252 to rotate, thereby driving the roller part 251 to rotate, thereby switching the positions of the pressure roller 25 and the push rod 26 and realizing the switching of the detection state.

[0110] When the test of the battery 10 to be tested is completed, when the gear 27 needs to engage with the tooth plate 51, the hydraulic cylinder 22 pulls the mounting frame 23 to move a preset distance. At this time, the ball 931 at the bottom end of the second square shaft 93 moves along the inclined surface of the trapezoidal groove 104 to the bottom of the trapezoidal groove 104. At this time, the second square shaft 93 and the first square shaft 92 follow the decline due to gravity. At this time, the second square shaft 93 moves out of the square opening 253, and the first square shaft 92 declines but is still plugged into the square groove 911, so that when the motor 24 drives the drive shaft 91 to rotate, and the drive shaft 91 drives the gear 27 to rotate through the first square shaft 92 and the second square shaft 93, it will not drive the mounting tube 252 to rotate through the second square shaft 93, that is, it will not drive the pressure roller 25 and the push rod 26 to follow the rotation, so that when the motor 24 is used as a power to drive the horizontal moving device 5 and the pushing component 7, the pressure roller 25 and the push rod 26 do not need to follow the rotation, thereby reducing the load on the motor 24.

[0111] Subsequently, when the hydraulic cylinder 22 pushes the mounting frame 23 to drive the pressure roller 25 to move, when the ball 931 moves upward along the inclined surface of the trapezoidal groove 104 to the detection platform 1, the second square shaft 93 drives the first square shaft 92 to move upward, and the top of the second square shaft 93 is inserted into the square opening 253 again.

[0112] Of course, in other embodiments, the transmission shaft 9 can also be a connecting shaft, which is installed at the bottom end of the pressure roller 25, and the gear 27 is installed on the connecting shaft. The top end of the pressure roller 25 is also connected to the output end of the motor 24 through the connecting shaft, and the two connecting shafts are concentrically arranged.

[0113] A supporting frame 103 is installed on the detection platform 1 at one side close to the limiting arm 8 .

[0114] By arranging the support frame 103 on the testing platform 1 , when the support plate 4 moves toward one side of the limiting arm 8 to open the top opening of the box body 6 , the support frame 103 can partially support the support plate 4 to move out of the testing platform 1 .

[0115] The working principle of the battery testing equipment for the autonomous driving vehicle provided by the present invention is as follows:

[0116] When performing the extrusion test, the battery 10 to be tested is placed on the carrier plate 4, and the battery 10 to be tested is located between the pressure roller 25 and the limit plate 101. First, the battery 10 to be tested is subjected to an extrusion test through the horizontal detection component 2. The hydraulic cylinder 22 pushes the mounting frame 23 to drive the pressure roller 25 to move toward the battery 10 to be tested. One side of the battery 10 to be tested is abutted by the limit plate 101, and the other side is squeezed by the pressure roller 25. The hydraulic cylinder 22 applies a preset thrust to the battery 10 to be tested, or after moving a preset distance, observe the damage of the battery 10 to be tested, whether thermal runaway, fire, etc. occur. When abnormal conditions such as fire do not occur, the electrical performance testing equipment can also be connected to detect changes in the electrical performance indicators of the battery 10 to be tested. By detecting the electrical performance indicators of the battery, it is assisted to determine whether the battery meets the standards.

[0117] When the battery 10 to be tested is subjected to an extrusion test in the vertical direction, the battery 10 to be tested is placed on the supporting plate 4 below the vertical detection component 3, and the hydraulic cylinder 22 in the vertical detection component 3 pushes the mounting frame 23 downward, driving the corresponding pressing roller 25 to move downward to squeeze downward from the top surface of the battery 10 to be tested. When the hydraulic cylinder 22 applies a preset thrust to the battery 10 to be tested, or moves a preset distance, the condition of the battery 10 to be tested is observed in the same way, and the electrical performance testing equipment can be used to detect the changes in the electrical performance of the battery after the current test, to assist in determining whether the battery meets the standards.

[0118] When the battery 10 to be tested is subjected to a needle penetration test, the motor 24 drives the pressure roller 25 to rotate 180 degrees. At this time, the top rod 26 in the horizontal detection assembly 2 faces the limit plate 101, and the top rod 26 in the vertical detection assembly 3 faces the detection platform 1.

[0119] During the test, similarly, the battery 10 to be tested is placed between the horizontal detection assembly 2 and the limit plate 101, the hydraulic cylinder 22 pushes the mounting frame 23, the pressure roller 25 drives the push rod 26 to move toward the battery 10 to be tested, and pierces the side of the battery 10 to be tested, and then observes whether the battery has thermal runaway and fire after the test;

[0120] Subsequently, similarly, the top surface of the battery 10 to be tested is punctured by the ejector rod 26 in the vertical detection assembly 3, and then it is observed whether the battery has thermal runaway, fire, etc. after the test.

[0121] Please refer to Figure 6 When the tested battery has thermal runaway and starts to smoke and catch fire, the horizontal moving device 5 pushes the supporting plate 4 to move toward one side of the limiting arm 8. Since the battery 10 to be tested is blocked by the limiting arm 8, it will not move with the supporting plate 4. When the supporting plate 4 moves to be separated from more than half of the tested battery, the center of gravity of the tested battery is not supported, and it falls downward into the box 6. Then, the horizontal moving device 5 drives the supporting plate 4 to move in the opposite direction to seal the top opening of the box 6, thereby preventing the battery from catching fire or even exploding and damaging the test equipment and personnel, thereby improving the safety of the test equipment.

[0122] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A battery testing device for an autonomous vehicle, characterized in that: include: Test bench, horizontal test assembly and vertical test assembly; The horizontal detection assembly is installed on the detection platform, and the horizontal detection assembly includes a mounting plate, a hydraulic cylinder, a mounting frame, a motor, a pressure roller and a push rod. The hydraulic cylinder is mounted on one end of the detection platform through the mounting plate, the mounting frame is mounted on the output end of the hydraulic cylinder, the pressure roller is rotatably mounted on the mounting frame, the motor is mounted on the mounting frame through a bracket, the motor is used to drive the pressure roller to rotate, and the push rod is vertically mounted on the pressure roller; A limit plate is installed at the other end of the detection table; The vertical detection component is suspended above the detection platform and is located between the horizontal detection component and the limit plate; The battery testing equipment of the autonomous driving vehicle also includes a load-bearing plate, a horizontal moving device, a box body and a limit arm. The box body is installed at the bottom of the test bench and is located below the vertical test assembly. A placement slot is provided on the top of the test bench, and the placement slot is communicated with the top opening of the box body. The bottom of the load-bearing plate is slidably installed inside the placement slot, and the top of the load-bearing plate extends to the outside of the placement slot. A concave platform is provided on one side of the load-bearing plate, and a baffle is provided on the other side of the load-bearing plate. The limit arm is installed on the limit plate and suspended at one end of the load-bearing plate. The placement slot is open at one end close to the limit arm, and the horizontal moving device is used to drive the load-bearing plate to slide along the placement slot. The horizontal moving device includes a tooth plate and a driving arm, the tooth plate is slidably mounted on the detection platform, one end of the driving arm is connected to one end of the tooth plate, and the other end of the driving arm is detachably connected to the supporting plate. The horizontal detection assembly also includes a gear, which is mounted on the bottom of the pressure roller through a transmission shaft. When the hydraulic cylinder drives the mounting frame to move a preset distance toward a side away from the placement groove, the gear engages with the tooth plate.

2. The battery testing device for an autonomous vehicle according to claim 1, characterized in that: A positioning rod is installed on the mounting frame, and one end of the positioning rod away from the mounting frame passes through the mounting plate.

3. The battery testing device for an autonomous driving vehicle according to claim 1, characterized in that: A water inlet pipe is connected and installed on the box body.

4. The battery testing device for an autonomous vehicle according to claim 1, characterized in that: The limiting arm comprises a connecting plate and a plurality of limiting shafts, wherein the connecting plate is mounted on the limiting plate and the connecting plate is suspended above the bearing plate, and the plurality of limiting shafts are installed at intervals at the bottom of the connecting plate.

5. The battery testing device for an autonomous driving vehicle according to claim 4, characterized in that: The battery testing equipment for the autonomous driving vehicle also includes a pushing component, which is used to remove the battery to be tested from the supporting plate after the battery to be tested is tested.

6. The battery testing device for an autonomous vehicle according to claim 5, characterized in that: The pushing assembly includes a pushing plate and a pushing arm, wherein the pushing plate is suspended above one end of the bearing plate, the pushing arm connects the pushing plate and the other end of the tooth plate, and a groove is provided on the pushing plate at a position corresponding to the limiting shaft; A sliding rod is installed at one end of the tooth plate, and one end of the driving arm is sleeved on the sliding rod. The horizontal moving device also includes a trapezoidal plate, which is installed on the detection table. The trapezoidal plate supports the driving arm, and the supporting plate is provided with a slot on the side facing the driving arm. The other end of the driving arm is inserted into the slot. A rectangular opening is opened on a corner of the supporting plate close to the slot, and the rectangular opening is connected to the lower side wall of the slot. When the driving arm is located at the lowest end of the curved surface of the trapezoidal plate, the top of the driving arm is lower than the top wall of the rectangular opening.

7. The battery testing device for an autonomous vehicle according to claim 4, characterized in that: The transmission shaft includes a driving shaft, a first square shaft and a second square shaft, the pressure roller includes a roller portion and a mounting tube, the roller portion is fixedly mounted on the mounting tube, the top end of the driving shaft is connected to the output shaft of the motor, the bottom end of the driving shaft extends to the interior of the mounting tube, the bottom end of the mounting tube and the bottom end of the driving shaft are respectively provided with a square opening and a square groove, the bottom end of the first square shaft is mounted on the top end of the second square shaft, the top end of the first square shaft is plugged into the square groove, the top end of the second square shaft is plugged into the square opening, the gear is mounted on the second square shaft, the cross-sectional side length of the square opening is greater than the cross-sectional diagonal value of the second square shaft, a ball is provided at the bottom end of the second square shaft, the ball abuts against the detection table, and a trapezoidal groove is provided at the top of the detection table and on one side of the gear.

8. The battery testing device for an autonomous vehicle according to claim 1, characterized in that: A bearing frame is installed on the detection platform and on one side close to the limiting arm.

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