Battery swapping simulation test bench and vehicle battery swapping times test method

Abstract

The present invention belongs to the technical field of battery swapping simulation, and discloses a battery swapping simulation test bench and a vehicle battery swapping times testing method. The battery swapping simulation test bench includes a test bench frame, a vehicle end simulation mechanism, a battery end simulation mechanism and a lifting mechanism. During simulation, multiple vehicle end and battery end locking components are installed according to the position of the actual vehicle locking mechanism, and the weight of the counterweight component is adjusted according to the weight of the battery box. Subsequently, the lifting mechanism lifts the battery end simulation mechanism until the battery end locking component and the vehicle end locking component are locked. After locking, the lifting mechanism descends and stops for a set time T. Then, the lifting mechanism rises and jacks up the battery end simulation mechanism to unlock the battery end locking component and the vehicle end locking component. The battery end simulation mechanism descends to the initial position with the lifting mechanism, completing one battery swapping simulation. The above battery swapping simulation process is repeated, and the number of battery swaps is recorded. Through this test bench, the actual vehicle battery swapping state can be accurately simulated, ensuring the accuracy and reliability of the test results of the vehicle's available battery swapping times.

Description

Technical Field

[0001] The present invention relates to the technical field of battery swapping simulation, and particularly to a battery swapping simulation test bench and a method for testing the number of battery swaps of a vehicle. Background Art

[0002] A battery swapping vehicle includes a vehicle body and a battery pack detachably disposed on the vehicle body. The battery pack is locked or unlocked with the vehicle body through a locking mechanism. As a mechanical device for locking the battery pack, the locking mechanism can realize the reliable connection between the battery swapping vehicle and the vehicle body and meet the requirement of quickly replacing the battery pack.

[0003] In the safety specifications of the locking mechanism, there are clear requirements for the number of times of the whole vehicle battery swapping operation and the durability life of the vehicle-end battery swapping mechanism. For example, the durability life of the vehicle with a snap-type locking mechanism should at least meet the requirement of 8,000 times of battery swapping, and the durability life of the vehicle with a bolt-type locking mechanism should at least meet the requirement of 3,000 times of battery swapping. Therefore, the durability test of the locking mechanism is crucial. By testing the number of times the locking mechanism can be swapped on an actual vehicle, the locking mechanism can be analyzed, and the obtained analysis data is an important basis for improving the locking mechanism.

[0004] To test the number of times the locking mechanism can be swapped on an actual vehicle, one way is to carry out relevant verification in the whole vehicle and the whole station (battery swapping station), conduct battery swapping tests on the vehicle physical object or model, and record the number of battery swaps. The cost invested is relatively high, and the test cycle is relatively long. If there are problems with the locking mechanism during the test, it will delay the development of the entire project. The life of the locking mechanism itself (the number of locking and unlocking times) can be realized through a locking and unlocking test bench, but whether the locking mechanism can achieve the specified number of battery swaps when applied to the whole vehicle is the most important. That is, it is inaccurate to only reflect the number of battery swaps of the whole vehicle by testing the life of the locking mechanism itself.

[0005] In summary, the prior art has the following defects: In order to pursue test accuracy, conducting battery swapping simulation tests in the whole vehicle and the whole station obviously incurs too high costs; if only testing the life of the locking mechanism itself, it cannot accurately reflect the number of battery swaps of the whole vehicle.

[0006] Therefore, there is an urgent need for a battery swapping simulation test bench and a method for testing the number of battery swaps of a vehicle, which can ensure the accuracy of the test results of the number of battery swaps of the whole vehicle while controlling costs. Summary of the Invention

[0007] The purpose of the present invention is to provide a battery swapping simulation test bench and a method for testing the number of battery swaps of a vehicle, which can accurately simulate the actual vehicle battery swapping state, ensure the accuracy and reliability of the test results of the number of battery swaps of the whole vehicle, reduce project costs, and improve economic efficiency.

[0008] To achieve this purpose, the present invention adopts the following technical solutions:

[0009] On the one hand, a battery swapping simulation test bench is provided, including:

[0010] A test bench frame;

[0011] A vehicle-end simulation mechanism is arranged on the test bench frame. The vehicle-end simulation mechanism includes a first mounting plate and a plurality of vehicle-end locking components which are adjustably arranged on the first mounting plate;

[0012] A battery-end simulation mechanism includes a second mounting plate, a weight-adjustable counterweight component arranged on the second mounting plate, and a plurality of battery-end locking components which are adjustably arranged on the second mounting plate. The plurality of battery-end locking components correspond to the plurality of vehicle-end locking components one by one and are detachably matched;

[0013] A lifting mechanism, the driving end of which is connected to the second mounting plate.

[0014] As a preferred solution of the battery swapping simulation test bench provided by the present invention, the vehicle-end simulation mechanism further includes a first floating component. An installation cross beam is arranged on the test bench frame, and the first mounting plate is arranged on the installation cross beam through the first floating component.

[0015] As a preferred solution of the battery swapping simulation test bench provided by the present invention, the first floating component includes a guide rod, and a first elastic member and a second elastic member sleeved on the guide rod. The guide rod is connected to the installation cross beam and penetrates through the first mounting plate. The first elastic member is arranged between the first mounting plate and the installation cross beam, and the second elastic member is arranged on the side of the first mounting plate facing away from the installation cross beam. A stop portion for stopping the second elastic member is arranged on the guide rod.

[0016] As a preferred solution of the battery swapping simulation test bench provided by the present invention, a plurality of positioning pins are arranged on the first mounting plate, at least two of the positioning pins are arranged diagonally, positioning holes are arranged on the second mounting plate directly below each of the positioning pins, and the positioning pins are inserted into the positioning holes.

[0017] As a preferred solution of the battery swapping simulation test bench provided by the present invention, a plurality of strip-shaped holes are arranged on the first mounting plate in parallel and at intervals. The vehicle-end locking components can be selectively fixed to the first mounting plate through any one of the strip-shaped holes and are adjustable in position along the length direction of the strip-shaped holes. A plurality of mounting holes are arranged on the second mounting plate corresponding to each of the battery-end locking components, and the battery-end locking components can be selectively inserted into any one of the mounting holes.

[0018] As a preferred solution of the battery swapping simulation test bench provided by the present invention, the counterweight assembly includes a plurality of counterweight blocks, an installation column is arranged on the second mounting plate, and the counterweight blocks are coaxially inserted through the installation column.

[0019] As a preferred solution of the battery swapping simulation test bench provided by the present invention, the lifting mechanism includes a lifting platform, a second floating assembly is arranged on the lifting platform, the second floating assembly includes a plurality of first floating members and a plurality of second floating members, and a plurality of the first floating members support the middle part of the second mounting plate, and a plurality of the second floating members support the battery end locking assemblies on both sides of the second mounting plate.

[0020] As a preferred solution of the battery swapping simulation test bench provided by the present invention, both the first floating member and the second floating member include a mounting bottom plate, a top block, and a third elastic member arranged between the mounting bottom plate and the top block. A connecting cylinder is arranged on the mounting bottom plate, a connecting sleeve is arranged on the top block, one end of the third elastic member is inserted into the connecting cylinder, and the other end is sleeved on the connecting sleeve.

[0021] As a preferred solution of the battery swapping simulation test bench provided by the present invention, the vehicle end locking assembly includes a locking pin, a groove is arranged on the locking pin in a circumferential direction, the battery end locking assembly includes an outer cylinder and a locking sleeve movably arranged axially in the outer cylinder, a plurality of balls are arranged on the inner wall of the locking sleeve in a circumferential direction, and the balls have states of being caught in and disengaged from the groove.

[0022] As a preferred solution of the battery swapping simulation test bench provided by the present invention, an electromagnet is arranged in the connecting sleeve of the second floating member, and the electromagnet magnetically attracts the locking sleeve to make the balls disengage from the groove.

[0023] As a preferred solution of the battery swapping simulation test bench provided by the present invention, a surrounding plate is arranged around the side edge of the lifting platform in a circumferential direction, and the surrounding plate surrounds the second floating assembly.

[0024] As a preferred solution of the battery swapping simulation test bench provided by the present invention, a butting plate is arranged on the lifting mechanism, a limiting member that stops the butting plate in the vertical direction is arranged on the test bench frame, and the height of the limiting member is adjustable.

[0025] As a preferred solution of the battery swapping simulation test bench provided by the present invention, the lifting mechanism includes a lifting platform, a driving motor arranged on the test bench frame, and a plurality of screw jacks. The driving end of the driving motor is connected to the plurality of screw jacks, and the lifting end of each screw jack is connected to the lifting platform.

[0026] On the other hand, a vehicle battery swapping times testing method is provided. The testing is carried out by using the battery swapping simulation test bench as described above, and the method includes the following steps:

[0027] The vehicle-end locking component and the battery-end locking component are installed in place;

[0028] Adjust the weight of the counterweight component according to the weight of the battery box;

[0029] The lifting mechanism lifts the battery-end simulation mechanism until the battery-end locking component and the vehicle-end locking component are locked;

[0030] The lifting mechanism descends and pauses for a set time T;

[0031] The lifting mechanism rises and jacks up the battery-end simulation mechanism to unlock the battery-end locking component and the vehicle-end locking component;

[0032] The battery-end simulation mechanism descends to the initial position with the lifting mechanism to complete a battery swapping simulation;

[0033] Repeat the battery swapping simulation process and record the number of battery swapping times.

[0034] Advantages of the present invention:

[0035] The present invention provides a battery swapping simulation test bench, which includes a test bench frame, a vehicle-end simulation mechanism, a battery-end simulation mechanism, and a lifting mechanism. The test bench frame serves as the installation foundation for the entire test bench, providing stable support for the test bench during the simulation test process. The vehicle-end simulation mechanism is arranged on the test bench frame and includes a first mounting plate and a plurality of vehicle-end locking components that are adjustably arranged on the first mounting plate. Before the actual test, the installation positions of the vehicle-end locking components on the actual vehicle to be tested are used for installation and layout on the first mounting plate. The battery-end simulation mechanism includes a second mounting plate, a counterweight assembly, and a plurality of battery-end locking components. The positions of the plurality of battery-end locking components on the second mounting plate are adjustable, and the plurality of battery-end locking components are in one-to-one correspondence with the plurality of vehicle-end locking components and are detachably matched. Before the actual test, the installation positions of the plurality of battery-end locking components on the actual vehicle's battery box are used for layout on the second mounting plate to ensure that the battery-end locking components are in one-to-one correspondence with the vehicle-end locking components and the positions are the same as those of the actual vehicle to be tested, so as to eliminate the errors caused by the installation positions of the vehicle-end and battery-end locking components during the test process. The counterweight assembly is arranged on the second mounting plate and its weight is adjustable. Before the actual test, the counterweight of the counterweight assembly is adjusted according to the weight of the actual battery box to simulate the weight of the actual battery box and eliminate the errors caused by inconsistent weights. The driving end of the lifting mechanism is connected to the second mounting plate to drive the battery-end simulation mechanism to rise, and the battery-end locking components rise synchronously until they are in one-to-one locking cooperation with the vehicle-end locking components. At this time, the battery-end simulation mechanism is locked to the vehicle-end simulation mechanism to truly reflect the state of the battery box locked to the vehicle body. Subsequently, unlocking and locking again can complete one battery swapping process. This test bench can adjust the positions and quantities of the vehicle-end locking components and the battery-end locking components according to the actual vehicle to be tested, and adjust the counterweight of the counterweight assembly according to the actual vehicle's battery box, and can accurately simulate the actual vehicle's battery swapping process without the need to conduct battery swapping tests on the entire vehicle and in the entire station, reducing the cost investment. Moreover, this test bench does not only test the number of lockings and unlockings of the locking mechanism, but applies the locking mechanism to the vehicle-end simulation mechanism and the battery-end simulation mechanism to test the number of battery swaps that the locking mechanism can achieve when applied to the entire vehicle, effectively ensuring the accuracy and reliability of the test results of the number of battery swaps that the entire vehicle can achieve.

[0036] The present invention also provides a method for testing the number of battery replacements of a vehicle. The steps of using the above battery replacement simulation test bench to test the number of battery replacements include: the vehicle-end locking component and the battery-end locking component are installed in place; the weight of the counterweight component is adjusted according to the weight of the battery box; the lifting mechanism lifts the battery-end simulation mechanism until the battery-end locking component and the vehicle-end locking component are locked; the lifting mechanism descends and stops for a set time T; the lifting mechanism rises and jacks up the battery-end simulation mechanism to unlock the battery-end locking component and the vehicle-end locking component; the battery-end simulation mechanism descends with the lifting mechanism to the initial position to complete one battery replacement simulation; the battery replacement simulation process is repeated, and the number of battery replacements is recorded. This method for testing the number of battery replacements has simple procedures and does not require battery replacement tests on the entire vehicle and in the entire station. According to different types of vehicles to be tested, it is only necessary to change the installation positions of the vehicle-end and battery-end locking components on the first mounting plate and the second mounting plate respectively, and adjust the weight of the counterweight component. It can truly simulate the battery replacement state of the actual vehicle, accurately record the number of battery replacements, and ensure the accuracy and reliability of the test results of the number of battery replacements of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is the first axonometric view of the battery replacement simulation test bench provided by the specific embodiment of the present invention;

[0038] Figure 2 is the second axonometric view of the battery replacement simulation test bench provided by the specific embodiment of the present invention;

[0039] Figure 3 is the side view of the battery replacement simulation test bench provided by the specific embodiment of the present invention;

[0040] Figure 4 is the first axonometric view of the vehicle-end simulation mechanism provided by the specific embodiment of the present invention;

[0041] Figure 5 is the structural schematic diagram of the first floating component provided by the specific embodiment of the present invention;

[0042] Figure 6 is the second axonometric view of the vehicle-end simulation mechanism provided by the specific embodiment of the present invention;

[0043] Figure 7 is the installation schematic diagram of the battery-end simulation mechanism provided by the specific embodiment of the present invention;

[0044] Figure 8 is the back schematic diagram of the battery-end simulation mechanism provided by the specific embodiment of the present invention;

[0045] Figure 9 is the installation schematic diagram of the second floating component on the lifting platform provided by the specific embodiment of the present invention;

[0046] Figure 10It is a schematic structural diagram of the first floating member and the second floating member provided by the specific embodiment of the present invention;

[0047] Figure 11 It is an exploded schematic diagram of the second floating member and the battery end locking assembly provided by the specific embodiment of the present invention;

[0048] Figure 12 It is a schematic diagram of the insertion of the vehicle end locking assembly and the battery end locking assembly provided by the specific embodiment of the present invention;

[0049] Figure 13 is Figure 3 the partial enlarged view at A in

[0050] Figure 14 It is a schematic structural diagram of the lifting mechanism provided by the specific embodiment of the present invention (the lifting platform is hidden);

[0051] Figure 15 It is a flowchart of the vehicle battery replacement times testing method provided by the specific embodiment of the present invention.

[0052] In the figure:

[0053] 1. Test bench; 2. Vehicle end simulation mechanism; 3. Battery end simulation mechanism; 4. Lifting mechanism; 5. Electrical box; 6. Touch screen module; 7. Operation button;

[0054] 11. Bottom frame; 12. Vertical beam; 13. Reinforcing beam; 14. Installation cross beam; 15. Limiting member; 16. Installation base;

[0055] 21. First mounting plate; 22. Vehicle end locking assembly; 23. First floating assembly; 24. Positioning pin;

[0056] 211. Slot; 221. Lock pin; 222. Limiting box; 2211. Groove;

[0057] 231. Guide rod; 232. First elastic member; 233. Second elastic member; 234. Stopping portion;

[0058] 31. Second mounting plate; 32. Counterweight assembly; 33. Battery end locking assembly;

[0059] 311. Installation hole; 312. Installation column; 321. Counterweight block;

[0060] 331. Outer cylinder; 332. Lock sleeve; 333. Ball; 334. Fixed plate;

[0061] 41. Lifting platform; 42. First floating member; 43. Second floating member; 44. Enclosure; 45. Contact plate; 46. Driving motor; 47. Screw jack; 48. Gear box; 49. Transmission shaft; 410. Diaphragm coupling;

[0062] 421. Mounting base plate; 422. Top block; 423. Third elastic member;

[0063] 4211. Connecting cylinder; 4221. Connecting sleeve; 4222. Perforation; 431. Electromagnet. Detailed implementation manner

[0064] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0065] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0066] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0067] In the description of this embodiment, the orientation or positional relationship such as "above", "below", "left", and "right" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0068] As Figure 1 , Figure 2 and Figure 3 shown, this embodiment provides a battery swapping simulation test bench, including a test bench frame 1, a vehicle end simulation mechanism 2, a battery end simulation mechanism 3, and a lifting mechanism 4.

[0069] The test bench 1 is the installation foundation of the entire test rig and provides stable support for the test rig during the simulation test. Refer to Figure 1 , the test bench 1 includes a rectangular bottom frame 11, and four vertical beams 12 are arranged on the bottom frame 11. Reinforcement beams 13 are arranged between the two left vertical beams 12 and between the two right vertical beams 12 to improve the strength and stability of the test bench 1.

[0070] Refer to Figure 1 and Figure 2 , the vehicle end simulation mechanism 2 is arranged on the test bench 1, and it includes a first mounting plate 21 and a plurality of vehicle end locking components 22 arranged on the first mounting plate 21 with adjustable positions. Before the actual test, the mounting positions of the vehicle end locking components 22 on the actual vehicle to be tested are installed and arranged on the first mounting plate 21. The battery end simulation mechanism 3 includes a second mounting plate 31, a counterweight assembly 32, and a plurality of battery end locking components 33. The positions of the plurality of battery end locking components 33 on the second mounting plate 31 are adjustable, and the plurality of battery end locking components 33 and the plurality of vehicle end locking components 22 are in one-to-one correspondence and are detachably matched. Before the actual test, according to the installation positions of the plurality of battery end locking components 33 on the actual vehicle battery box to be tested, they are arranged on the second mounting plate 31 to ensure that the battery end locking components 33 and the vehicle end locking components 22 are in one-to-one correspondence and the positions are the same as those of the actual vehicle to be tested, so as to eliminate the errors caused by the installation positions of the vehicle end locking components 22 and the battery end locking components 33 during the test. The counterweight assembly 32 is arranged on the second mounting plate 31 and the weight is adjustable. Before the actual test, the counterweight of the counterweight assembly 32 is adjusted according to the weight of the actual battery box to simulate the weight of the actual battery box and eliminate the errors caused by inconsistent weights.

[0071] The driving end of the lifting mechanism 4 is connected to the second mounting plate 31 to drive the battery end simulation mechanism 3 to rise, and the battery end locking components 33 rise synchronously until they are locked and matched with the vehicle end locking components 22 in one-to-one correspondence. At this time, the battery end simulation mechanism 3 is locked to the vehicle end simulation mechanism 2 to truly reflect the state of the battery box locked to the vehicle body. Subsequently, unlocking and locking again can complete a battery swapping process. This test rig can adjust the positions and quantities of the vehicle end locking components 22 and the battery end locking components 33 according to the actual vehicle to be tested, and adjust the counterweight of the counterweight assembly 32 according to the actual vehicle battery box, and can accurately simulate the battery swapping process of the actual vehicle. There is no need to conduct battery swapping tests on the entire vehicle and in the entire station, reducing the cost investment. Moreover, this test rig does not only test the locking and unlocking times of the locking mechanism, but applies the locking mechanism to the vehicle end simulation mechanism 2 and the battery end simulation mechanism 3 to test the number of battery swapping times that the locking mechanism can achieve when applied to the entire vehicle, effectively ensuring the accuracy and reliability of the test results of the number of battery swapping times of the entire vehicle.

[0072] Optionally, refer toFigure 1 The test bench 1 further includes mounting crossbeams 14, and mounting crossbeams 14 are provided between the two front vertical beams 12 and between the two rear vertical beams 12. Refer to Figure 3 and Figure 4 , the vehicle-end simulation mechanism 2 further includes a first floating assembly 23, and the first mounting plate 21 is arranged on the mounting crossbeam 14 through the first floating assembly 23. When the lifting mechanism 4 jacks up the battery-end simulation mechanism 3, due to the existence of the first floating assembly 23, the vehicle-end simulation mechanism 2 will have a certain amount of floating, avoiding rigid connection, and being able to truly simulate the process of the actual vehicle being jacked up during the battery swapping process.

[0073] Figure 5 shows the specific structure of the first floating assembly 23. Specifically, the first floating assembly 23 includes a guide rod 231, and a first elastic member 232 and a second elastic member 233 sleeved on the guide rod 231. The guide rod 231 is connected to the mounting crossbeam 14 and penetrates through the first mounting plate 21. The first elastic member 232 is arranged between the first mounting plate 21 and the mounting crossbeam 14, and the second elastic member 233 is arranged on the side of the first mounting plate 21 facing away from the mounting crossbeam 14. A stop portion 234 for stopping the second elastic member 233 is arranged on the guide rod 231, and the stop portion 234 is used to prevent the second elastic member 233 from detaching from the guide rod 231. The first mounting plate 21 can float up and down along the guide rod 231, and the first elastic member 232 and the second elastic member 233 are respectively arranged on both sides of the first mounting plate 21, and the two can play a role of buffering and shock absorption during the up and down floating process of the first mounting plate 21, simulating the real state when the actual vehicle is jacked up, so as to more accurately simulate the battery swapping process of the actual vehicle.

[0074] Exemplarily, both the first elastic member 232 and the second elastic member 233 are springs.

[0075] Refer to Figure 4 , one first floating assembly 23 is arranged at each of the four corner positions of the first mounting plate 21, which can ensure the stability and uniform force when the vehicle-end simulation mechanism 2 floats up and down.

[0076] Refer to Figure 4 , a plurality of positioning pins 24 are arranged on the first mounting plate 21, and positioning holes are arranged directly below each positioning pin 24 on the second mounting plate 31. The plurality of positioning pins 24 can be inserted into the positioning holes one by one to position the position of the battery-end simulation mechanism 3 relative to the vehicle-end simulation mechanism 2. Further, before the vehicle-end locking assembly 22 and the battery-end locking assembly 33 come into contact, the positioning pins 24 are inserted into the positioning holes, so that the vehicle-end locking assembly 22 and the battery-end locking assembly 33 are aligned first before coming into contact, ensuring smooth locking.

[0077] Preferably, at least two positioning pins 24 are arranged diagonally, and the position of the battery end simulation mechanism 3 relative to the vehicle end simulation mechanism 2 is positioned by the diagonal positioning principle, with higher accuracy. In this embodiment, referring to Figure 4 , one positioning pin 24 is arranged at each diagonal position of the first mounting plate 21 to achieve diagonal positioning. On this basis, the number of positioning pins 24 can be adaptively increased as long as the distribution mode of the added positioning pins 24 is reasonable, which can further improve the positioning accuracy.

[0078] Referring to Figure 1 and Figure 2 , four vehicle end locking components 22 are arranged on both sides of the first mounting plate 21. To realize the adjustment of the installation positions of the vehicle end locking components 22 on both sides, referring to Figure 6 , a plurality of strip holes 211 (three strip holes 211 are arranged on each side in this embodiment) are arranged in parallel and at intervals on both sides of the first mounting plate 21. The vehicle end locking component 22 can be selectively fixed to the first mounting plate 21 through any one of the strip holes 211 and is adjustable in position along the length direction of the strip hole 211. During actual installation, according to the installation positions of the vehicle end locking components 22 on the actual vehicle, the vehicle end locking component 22 is installed in a suitable strip hole 211 and adjusted to a suitable position in the strip hole 211.

[0079] Specifically, referring to Figure 4 , the vehicle end locking component 22 includes a limit box 222 and a locking pin 221. A limit plate is arranged at one end of the locking pin 221, and the limit plate is movably arranged in the limit box 222. The limit box 222 is installed at the position of the strip hole 211 through bolts. The locking pin 221 passes through the strip hole 211 and extends downward. The locking pin 221 can be inserted and locked with the battery end locking component 33. The locking pin 221 is movable relative to the limit box 222 and can tolerate the error when it is inserted with the battery end locking component 33. The position of the locking pin 221 in the strip hole 211 is adjustable to adjust the position of the entire vehicle end locking component 22 in the length direction of the strip hole 211.

[0080] Furthermore, to realize the adjustment of the installation position of the battery end locking component 33, referring to Figure 7 and Figure 8 , four battery end locking components 33 are arranged on each side of the second mounting plate 31, and a plurality of mounting holes 311 are arranged on the second mounting plate 31 corresponding to each battery end locking component 33. The battery end locking component 33 can be selectively inserted through any one of the mounting holes 311. During actual installation, it can be arranged according to the positions of the battery end locking components 33 on the actual vehicle battery box as long as the battery end locking components 33 and the vehicle end locking components 22 are in one-to-one correspondence. When processing the second mounting plate 31, according to several vehicle models to be tested, the mounting holes 311 are pre-opened on it. During actual testing, the battery end locking component 33 is installed in a suitable mounting hole 311.

[0081] See Figure 7 In this embodiment, optionally, the counterweight assembly 32 includes a plurality of counterweight blocks 321 with equal or unequal weights. Mounting posts 312 are provided on the second mounting plate 31, and the counterweight blocks 321 are coaxially inserted through the mounting posts 312. Specifically, eight mounting posts 312 in a rectangular array are provided at the middle position on the second mounting plate 31, and one or more counterweight blocks 321 are inserted through each mounting post 312. The weights of the counterweight blocks 321 inserted through the same mounting post 312 may be equal or unequal, but the total weight of the counterweight blocks 321 inserted through each mounting post 312 is the same, so as to make the force on the second mounting plate 31 balanced. Before actual testing, the weight of the battery box is evenly distributed to the eight mounting posts 312, and counterweight blocks 321 with corresponding weights are inserted through the mounting posts 312.

[0082] Exemplarily, taking one of the mounting posts 312 as an example, a plurality of counterweight blocks 321 can be stacked on it from bottom to top, and the weights of the plurality of counterweight blocks 321 gradually decrease from bottom to top, with a more reasonable layout, and the weight of the battery end simulation mechanism 3 can be accurately adjusted.

[0083] See Figure 9 As shown in FIGS. [relevant figure numbers not provided], the lifting mechanism 4 includes a lifting platform 41 and a driving mechanism disposed below the lifting platform 41. The driving mechanism is used to drive the lifting platform 41 to lift, so as to lift the battery end simulation mechanism 3 through the lifting platform 41. Optionally, a second floating assembly is provided on the lifting platform 41. The second floating assembly includes a plurality of first floating members 42 and a plurality of second floating members 43. The plurality of first floating members 42 support the middle part of the second mounting plate 31, and the plurality of second floating members 43 support the battery end locking assemblies 33 on both sides of the second mounting plate 31. The lifting platform 41 lifts the second mounting plate 31 through the first floating members 42 and the second floating members 43. The second mounting plate 31 has a slight floating during this process, which can truly simulate the state where the vehicle is lifted during the actual battery swapping process and prevent rigid contact between the battery end locking assembly 33 and the vehicle end locking assembly 22.

[0084] See Figure 10 and Figure 11, both the first floating member 42 and the second floating member 43 include a mounting base plate 421, a top block 422, and a third elastic member 423 disposed between the mounting base plate 421 and the top block 422. Specifically, to facilitate the installation of the third elastic member 423, a connecting cylinder 4211 is provided on the mounting base plate 421, a connecting sleeve 4221 is provided on the top block 422, one end of the third elastic member 423 passes through the connecting cylinder 4211, and the other end is sleeved on the connecting sleeve 4221. By providing the connecting cylinder 4211 and the connecting sleeve 4221, the third elastic member 423 can be compressed more stably, avoiding skew during compression. In addition, when the third elastic member 423 is compressed, the connecting sleeve 4221 can enter the connecting cylinder 4211 to enable the third elastic member 423 to have sufficient compression space. The third elastic member 423 is preferably a spring.

[0085] The upper surface of the top block 422 is a plane, and it has a surface contact with the second mounting plate 31 and the battery end locking assembly 33, thereby ensuring the stability when supporting the battery end simulation mechanism 3.

[0086] In this embodiment, the vehicle end locking assembly 22 is a combination form of a limit box 222 and a locking pin 221, and the locking pin 221 is inserted into the battery end locking assembly 33 for locking. See Figure 12 , the battery end locking assembly 33 includes an outer cylinder 331 and a locking sleeve 332 movably disposed along the axis within the outer cylinder 331. A plurality of balls 333 are circumferentially provided on the inner wall of the locking sleeve 332, and the balls 333 can roll relative to the inner wall of the locking sleeve 332. A groove 2211 is provided on the locking pin 221 in a circumferential direction, and the balls 333 have states of being caught in and disengaged from the groove 2211. Further, an electromagnet 431 is provided within the connecting sleeve 4221 of the second floating member 43, and the electromagnet 431 magnetically attracts the locking sleeve 332 to cause the balls 333 to disengage from the groove 2211, thereby achieving unlocking.

[0087] The battery end locking assembly 33 moves upward under the lifting of the lifting mechanism 4 until the locking pin 221 is inserted into the locking sleeve 332, and the balls 333 within the locking sleeve 332 are caught in the groove 2211 on the locking pin 221, that is, the locking of the battery end simulation mechanism 3 and the vehicle end simulation mechanism 2 is completed. During this process, the electromagnet 431 is not energized, and there is no magnetic attraction between it and the locking sleeve 332, so that the locking pin 221 can be smoothly locked with the locking sleeve 332. Subsequently, the lifting mechanism 4 descends and holds for a period of time to prepare for the unlocking process (corresponding to the process of disassembling the battery box on the actual vehicle). When unlocking, the lifting mechanism 4 rises and jacks up the second mounting plate 31 to bring the electromagnet 431 closer to the locking sleeve 332. Subsequently, the electromagnet 431 is energized, the electromagnet 431 magnetically attracts the locking sleeve 332, the locking sleeve 332 is subjected to a downward magnetic attraction force, and the balls 333 disengage from the groove 2211, completing the unlocking, which is consistent with the actual vehicle unlocking process.

[0088] See Figure 11 andFigure 12 A perforation 4222 is provided through the top plate of the second floating member 43. By providing the perforation 4222, magnetic attraction between the electromagnet 431 and the lock sleeve 332 can be avoided. There is no need to provide a perforation 4222 on the top plate of the first floating member 42, which can stably support the bottom surface of the second mounting plate 31.

[0089] See Figure 8 and Figure 11 The battery terminal locking assembly 33 further includes a fixing plate 334. The outer cylinder 331 is fixedly connected to the fixing plate 334. The outer cylinder 331 is disposed through the mounting hole 311 of the second mounting plate 31, and the fixing plate 334 is threadedly connected to the bottom surface of the second mounting plate 31.

[0090] It can be understood that since the second floating members 43 are supported by the battery terminal locking assembly 33 one by one, the second floating members 43 also need to be set in a form with adjustable mounting positions. Exemplarily, adjustment holes corresponding to the mounting holes 311 on the second mounting plate 31 are pre-opened on the lifting platform 41. After the battery terminal locking assembly 33 is installed, the mounting positions of the second floating members 43 can be determined, and the mounting bottom plate 421 of the second floating member 43 can be connected to the corresponding adjustment holes by threaded members.

[0091] Furthermore, see Figure 9 A surrounding plate 44 is provided around the circumference of the side edge of the lifting platform 41. The surrounding plate 44 surrounds the second floating assembly. The surrounding plate 44 arranged in a circle can surround a plurality of first floating members 42 and a plurality of second floating members 43 inside it, avoiding dust and impurities from entering and causing serious wear of the first floating member 42 and the second floating member 43. The service life of the test bench is increased.

[0092] See Figure 3 and Figure 13 An abutting plate 45 is provided on the lifting mechanism 4, and a limiting member 15 for vertically stopping the abutting plate 45 is provided on the vertical beam 12 of the test bench frame 1 to limit the lifting distance of the lifting mechanism 4 and avoid excessive upward movement of the battery terminal locking assembly 33 and damaging its locking with the locking pin 221. Further, the height of the limiting member 15 is adjustable, and the mounting position of the limiting member 15 can be finely adjusted according to the required lifting height of the battery terminal locking assembly 33. Specifically, an adjustment hole is provided vertically on the limiting member 15. A threaded member is passed through the adjustment hole and threadedly connected to the vertical beam 12. The mounting height of the limiting member 15 can be adjusted by adjusting the position of the threaded member in the adjustment hole.

[0093] See Figure 14, which shows the driving mechanism composition of the lifting mechanism 4. A mounting base 16 is provided on the bottom frame 11 of the test bench 1, and the driving mechanism is provided on the mounting base 16. Specifically, the driving mechanism includes a driving motor 46 and a plurality of screw elevators 47, the driving end of the driving motor 46 is connected to the plurality of screw elevators 47, and the lifting end of each screw elevator 47 is connected to the lifting platform 41, so as to synchronously lift and drive the lifting platform 41 to rise and fall.

[0094] More specifically, four screw elevators 47 are provided. The drive motor 46 is provided in the middle of the mounting base 16, and its output end is connected to a gear box 48. Two opposite sides of the gear box 48 are connected to a transmission shaft 49 respectively. One end of the two transmission shafts 49 away from the gear box 48 is connected to a screw elevator 47 respectively. When the transmission shaft 49 rotates, the screw elevator 47 can be driven to move up and down. The screw elevators 47 on both sides of the gear box 48 are respectively connected to a screw elevator 47 through a transmission shaft 49. When the two transmission shafts 49 rotate, they can drive Figure 14 The screw lifting motion of the two screw lifters 47 at the middle and rear sides. Further, the transmission shaft 49 and the output end of the gear box 48, as well as the transmission shaft 49 and the screw lifter 47 are all connected by a diaphragm coupling 410 to ensure transmission efficiency.

[0095] It should be noted that the transmission principle of the screw lift 47 is a relatively mature means in the prior art and will not be elaborated on in detail here.

[0096] See also Figure 1 and Figure 2 , the test bench 1 is provided with an electric box 5, a touch screen module 6 and an operating button 7. The electric box 5 is used to supply power to all electrical components such as the touch screen module 6, the operating button 7 and the drive motor 46. The tester can set the lifting distance of the lifting mechanism 4 and the stagnation time of the lifting mechanism 4 in each stage through the touch screen module 6. At the same time, the touch screen module 6 can also display the recorded number of battery replacements, so that the tester can intuitively obtain the information on the number of battery replacements without manual recording. The operating button 7 includes a start button, a stop button and a reset button. The three buttons can be used to start, stop and reset the test bench.

[0097] like Figure 15 As shown, this embodiment also provides a method for testing the number of battery replacement times of a vehicle, which is tested using the battery replacement simulation test bench as described above, and includes the following steps:

[0098] The vehicle-end locking assembly 22 and the battery-end locking assembly 33 are installed in place.

[0099] In the above steps, according to the installation position of the vehicle-end locking component 22 on the actual vehicle, the vehicle-end locking component 22 is installed in a suitable one of the strip holes 211, and is adjusted to a suitable position within the strip hole 211. According to the positions of the battery-end locking components 33 on the actual vehicle battery box, multiple battery-end locking components 33 are arranged, and it is necessary to ensure that the battery-end locking components 33 and the vehicle-end locking components 22 are in one-to-one correspondence.

[0100] Adjust the weight of the counterweight component 32 according to the weight of the battery box.

[0101] In the above steps, the weight of the battery box on the actual vehicle is distributed to the eight mounting posts 312 on the second mounting plate 31, and counterweight blocks 321 of corresponding weights are inserted through the mounting posts 312.

[0102] The lifting mechanism 4 lifts the battery-end simulation mechanism 3 until the battery-end locking component 33 and the vehicle-end locking component 22 are locked.

[0103] In the above steps, the battery-end locking component 33 rises until the locking pin 221 is inserted into the locking sleeve 332, and the balls 333 on the inner wall of the locking sleeve 332 are caught in the groove 2211 on the locking pin 221, thus completing the locking.

[0104] The lifting mechanism 4 descends and pauses for a set time T.

[0105] In the above steps, the set time T can be set through the touch screen module 6, and at least wait until the battery-end simulation mechanism 3 and the vehicle-end simulation mechanism 2 are stably locked and do not shake.

[0106] The lifting mechanism 4 rises and jacks up the battery-end simulation mechanism 3 to unlock the battery-end locking component 33 and the vehicle-end locking component 22.

[0107] In the above steps, the lifting mechanism 4 rises and jacks up the second mounting plate 31, so that the electromagnet 431 in the second floating member 43 approaches the locking sleeve 332, and the electromagnet 431 is energized to magnetically attract the locking sleeve 332, thereby causing the balls 333 to disengage from the groove 2211 on the locking pin 221, completing the unlocking process.

[0108] The battery-end simulation mechanism 3 descends with the lifting mechanism 4 to the initial position, completing one battery swapping simulation.

[0109] In the above steps, corresponding to the process of the RGV removing the battery box, after one locking and unlocking is completed, one battery swapping simulation is completed, and the battery swapping count value is incremented by one.

[0110] Repeat the battery swapping simulation process and record the battery swapping count.

[0111] In the above steps, continuously repeat the locking and unlocking process. Each time a locking and unlocking is completed, the battery swapping count is updated, and the battery swapping count can be displayed through the touch screen module 6 for easy reading.

[0112] The process of this battery swapping times testing method is simple. There is no need to conduct battery swapping tests on the whole vehicle and at the whole station. According to different types of vehicles to be tested, it is only necessary to change the installation positions of the vehicle-end locking component 22 and the battery-end locking component 33 on the first mounting plate 21 and the second mounting plate 31 respectively, and adjust the weight of the counterweight component 32, which can truly simulate the battery swapping state of the actual vehicle, accurately record the battery swapping times, and ensure the accuracy and reliability of the test results of the battery swapping times of the whole vehicle.

[0113] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An electric vehicle battery swapping simulation test bench, characterized in that, Comprising: A test bench (1); A car-end simulation mechanism (2) disposed on the test bench (1), the car-end simulation mechanism (2) including a first mounting plate (21) and a plurality of car-end locking components (22) adjustably disposed on the first mounting plate (21); A battery-end simulation mechanism (3) including a second mounting plate (31), a counterweight assembly (32) with adjustable weight disposed on the second mounting plate (31), and a plurality of battery-end locking components (33) adjustably disposed on the second mounting plate (31), the plurality of battery-end locking components (33) corresponding one-to-one with the plurality of car-end locking components (22) and being detachably engaged; A lifting mechanism (4) whose driving end is connected to the second mounting plate (31); The car-end simulation mechanism (2) further includes a first floating assembly (23), an installation cross beam (14) being provided on the test bench (1), and the first mounting plate (21) being disposed on the installation cross beam (14) through the first floating assembly (23); The first floating assembly (23) includes a guide rod (231) and a first elastic member (232) and a second elastic member (233) sleeved on the guide rod (231), the guide rod (231) being connected to the installation cross beam (14) and passing through the first mounting plate (21), the first elastic member (232) being disposed between the first mounting plate (21) and the installation cross beam (14), the second elastic member (233) being disposed on a side of the first mounting plate (21) facing away from the installation cross beam (14), and a stop portion (234) for stopping the second elastic member (233) being provided on the guide rod (231).

2. The battery swapping simulation test bench according to claim 1, wherein, A plurality of positioning pins (24) are provided on the first mounting plate (21), at least two of the positioning pins (24) being diagonally arranged, and positioning holes are provided on the second mounting plate (31) directly below each of the positioning pins (24), and the positioning pins (24) are inserted into the positioning holes.

3. The battery swapping simulation test bench according to claim 1, characterized in that, A plurality of strip holes (211) are provided on the first mounting plate (21) in parallel and at intervals, and the car-end locking components (22) can be selectively fixed to the first mounting plate (21) through any one of the strip holes (211) and are adjustable in position along the length direction of the strip holes (211), and a plurality of mounting holes (311) are provided on the second mounting plate (31) corresponding to each of the battery-end locking components (33), and the battery-end locking components (33) can be selectively inserted into any one of the mounting holes (311).

4. The battery swapping simulation test bench according to claim 1, characterized in that, The counterweight assembly (32) includes a plurality of counterweight blocks (321), an installation post (312) being provided on the second mounting plate (31), and the counterweight blocks (321) being coaxially inserted through the installation post (312).

5. The battery swapping simulation test bench according to claim 1, wherein The lifting mechanism (4) includes a lifting platform (41), and a second floating assembly is provided on the lifting platform (41). The second floating assembly includes a plurality of first floating members (42) and a plurality of second floating members (43). The plurality of first floating members (42) are supported at the middle of the second mounting plate (31), and the plurality of second floating members (43) are supported at the battery terminal locking assemblies (33) on both sides of the second mounting plate (31).

6. The battery swapping simulation test bench according to claim 5, wherein, Both the first floating member (42) and the second floating member (43) include a mounting base plate (421), a top block (422), and a third elastic member (423) disposed between the mounting base plate (421) and the top block (422). A connecting cylinder (4211) is provided on the mounting base plate (421), a connecting sleeve (4221) is provided on the top block (422), one end of the third elastic member (423) passes through the connecting cylinder (4211), and the other end is sleeved on the connecting sleeve (4221).

7. The battery swapping simulation test bench according to claim 6, wherein, The vehicle end locking assembly (22) includes a locking pin (221), and a groove (2211) is provided around the locking pin (221). The battery terminal locking assembly (33) includes an outer cylinder (331) and a locking sleeve (332) movably disposed along the axial direction within the outer cylinder (331). A plurality of balls (333) are provided along the circumferential direction on the inner wall of the locking sleeve (332), and the balls (333) have states of engaging with and disengaging from the groove (2211).

8. The battery swapping simulation test bench according to claim 7, characterized in that, An electromagnet (431) is provided within the connecting sleeve (4221) of the second floating member (43), and the electromagnet (431) magnetically attracts the locking sleeve (332) to disengage the balls (333) from the groove (2211).

9. The battery swapping simulation test bench according to claim 5, wherein, A surrounding plate (44) is provided around the circumference of the side of the lifting platform (41), and the surrounding plate (44) surrounds the second floating assembly.

10. The battery swapping simulation test bench according to any one of claims 1-9, characterized in that, An abutting plate (45) is provided on the lifting mechanism (4), and a limiting member (15) for vertically stopping the abutting plate (45) is provided on the test bench (1), and the height of the limiting member (15) is adjustable.

11. The battery swapping simulation test bench according to any one of claims 1-9, characterized in that, The lifting mechanism (4) includes a lifting platform (41), a driving motor (46) provided on the test bench (1), and a plurality of screw jacks (47). The driving end of the driving motor (46) is connected to the plurality of screw jacks (47), and the lifting end of each screw jack (47) is connected to the lifting platform (41).

12. A method for testing the number of times of vehicle battery swapping, characterized in that, Testing is performed using the battery swapping simulation test bench according to any one of claims 1-11, including the following steps: The vehicle end locking assembly (22) and the battery terminal locking assembly (33) are installed in place; The weight of the counterweight assembly (32) is adjusted according to the weight of the battery box; The lifting mechanism (4) lifts the battery terminal simulation mechanism (3) until the battery terminal locking assembly (33) and the vehicle end locking assembly (22) are locked; The lifting mechanism (4) descends and pauses for a set time T; The lifting mechanism (4) rises and jacks up the battery end simulation mechanism (3) so that the battery end locking assembly (33) and the vehicle end locking assembly (22) are unlocked; The battery end simulation mechanism (3) descends to the initial position along with the lifting mechanism (4) to complete one battery swapping simulation; Repeat the battery swapping simulation process and record the number of battery swapping times.

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