test bed
By designing a test trolley with detachable and adjustable wheel supports and a bridge structure, the problem of high cost for vehicle and trolley bottom-out testing was solved, achieving efficient battery pack bottom-out testing and reducing the vehicle development cycle.
Patent Information
- Application Number
- CN202522113160.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-30
AI Technical Summary
In the existing technology, the bottoming test of the whole vehicle and the trolley is costly and time-consuming, and cannot efficiently carry out the bottoming test of the battery pack.
Design a test trolley, including a frame, battery bracket, front axle and rear axle, to simulate the posture of the whole vehicle and the trolley through detachable and adjustable wheel brackets and bridge structure, and realize the bottoming test of the battery pack.
It reduces the cost of bottom-out testing, shortens the R&D cycle, meets the testing needs of different types of vehicles, and improves testing efficiency.
Smart Images
Figure CN224675874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle testing, and more specifically, to a test trolley. Background Technology
[0002] In the battery pack testing procedure, in order to reproduce the situation where the battery pack is hit by a sharp protrusion on the ground, it is necessary to conduct a bottom-support test on the battery pack.
[0003] In related technologies, bottoming tests typically require two types of tests: a full vehicle bottoming test and a trolley bottoming test. The full vehicle bottoming test involves a battery pack mounted on a complete vehicle for bottoming test, while the trolley bottoming test involves a battery pack mounted on a trolley (mobile platform vehicle) for bottoming test with the front of the vehicle tilted up. The bottoming test requires the participation of both the full vehicle and the trolley, resulting in high costs and long test cycles. Utility Model Content
[0004] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, this invention proposes a test trolley that can reduce the cost of bottom-support testing.
[0005] A test trolley according to an embodiment of the present invention includes: a frame and a battery bracket, the battery bracket being connected to the frame and used for mounting a battery pack; a front axle and a rear axle, both connected to the frame, each having two opposing wheel mounting surfaces; a plurality of first wheel brackets, each first wheel bracket including a first bracket body and a fixed bearing, the fixed bearing being fixedly connected to the first bracket body; and a plurality of second wheel brackets, each second wheel bracket including a second bracket body and a movable bearing, the movable bearing being adapted to be movably connected to the second bracket body via a shock absorber; wherein each wheel mounting surface is detachably mounted with a first wheel bracket or a second wheel bracket, and the mounting height of the first bracket body and the second bracket body on the corresponding wheel mounting surface is adjustable.
[0006] According to the embodiments of this utility model, the test trolley can be used to simulate a whole vehicle. By replacing and adjusting the first wheel bracket and the second wheel bracket on the wheel mounting surface, the attitude of the test trolley and the battery pack can be adjusted, so that the test trolley can meet the collision requirements of the whole vehicle bottoming test and the trolley bottoming test, thereby reducing the development cycle of the whole vehicle and reducing the cost of the bottoming test.
[0007] According to some embodiments of the present invention, both the first support body and the second support body are provided with connecting strip holes extending along the height direction of the test trolley; the wheel mounting surface has a support mounting hole, and the connecting strip hole is connected to the support mounting hole by fasteners.
[0008] According to some embodiments of the present invention, the number of bracket mounting holes is multiple, and the multiple bracket mounting holes are arranged at intervals along the height direction of the test trolley.
[0009] According to some embodiments of the present invention, in the longitudinal direction of the test trolley, the connection position of at least one of the front axle and the rear axle to the frame is adjustable.
[0010] According to some embodiments of the present invention, the front axle has an arched front clearance groove, and in the longitudinal direction of the test trolley, the front axle is adapted to avoid at least a portion of the battery pack at the front clearance groove; the rear axle has an arched rear clearance groove, and in the longitudinal direction of the test trolley, the rear axle is adapted to avoid at least a portion of the battery pack at the rear clearance groove.
[0011] According to some embodiments of the present invention, the test trolley further includes: at least one counterweight block, the counterweight block being detachably connected to the frame, and the position of the counterweight block mounted on the frame being adjustable.
[0012] According to some embodiments of the present invention, the battery bracket includes: an adapter frame connected to the vehicle frame, the adapter frame having a plurality of adapter holes spaced apart in the length and width directions of the test vehicle; and a plurality of connecting brackets, one end of the connecting bracket being detachably connected to the adapter hole, and the other end of the connecting bracket being adapted to be detachably connected to the battery pack.
[0013] According to some embodiments of the present invention, the test trolley further includes a controller and a braking system, wherein the controller is used to control the braking system to brake according to a remote braking signal.
[0014] According to some embodiments of the present invention, the test trolley further includes a reinforcing frame, which is connected to the top of the frame.
[0015] According to some embodiments of the present invention, the reinforcing frame includes: a front reinforcing frame, wherein at least a portion of the area where the vehicle frame and the front axle are connected corresponds to the front reinforcing frame; a rear reinforcing frame, wherein at least a portion of the area where the vehicle frame and the rear axle are connected corresponds to the rear reinforcing frame; a connecting frame, wherein the connecting frame is connected between the front reinforcing frame and the rear reinforcing frame, and at least a portion of the area where the vehicle frame and the battery bracket are connected corresponds to the connecting frame; and a plurality of reinforcing posts, wherein the front reinforcing frame, the connecting frame, and the rear reinforcing frame are all connected to the vehicle frame through at least one of the reinforcing posts.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a test trolley according to an embodiment of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of a portion of the structure of the test trolley according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the first wheel bracket according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the second wheel bracket and shock absorber according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of a test trolley according to an embodiment of the present utility model. Figure 2 ; Figure 6 This is a schematic diagram of the vehicle frame, reinforcing frame, and battery bracket according to an embodiment of the present utility model; Figure 7 This is a partial enlarged view of the test trolley at the battery bracket according to an embodiment of the present utility model.
[0018] Figure label: Frame 1; Left longitudinal beam 11; Right longitudinal beam 12; Connecting beam 13; Counterweight pool 14; Front counterweight pool 14a; Middle and rear counterweight pool 14b; Rear counterweight pool 14c; Battery bracket 2; adapter frame 21; adapter hole 211; connecting bracket 22; Front axle 31; front clearance groove 311; rear axle 32; rear clearance groove 321; wheel mounting surface 331; bracket mounting hole 332; First wheel bracket 41; First bracket body 411; Fixed bearing 412; Second wheel bracket 42; Second bracket body 421; Movable bearing 422; Connecting strip hole 43; Shock absorber 51; wheel 52; counterweight 6; braking system 7; 8. Reinforcing frame; 81. Front reinforcing frame; 82. Rear reinforcing frame; 83. Connecting frame; 84. Reinforcing column; 85. Reinforcing rib; Battery pack 9; Test trolley 10. Detailed Implementation
[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0020] In the description of this utility model, it should be understood that the terms "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0023] The test trolley 10 according to an embodiment of the present utility model is described in detail below with reference to the accompanying drawings.
[0024] Reference Figures 1-4As shown, the test rig 10 includes: a frame 1, a battery bracket 2, a front axle 31, a rear axle 32, multiple first wheel brackets 41 and multiple second wheel brackets 42. The battery bracket 2 is connected to the frame 1 and is used to install the battery pack 9. The front axle 31 and the rear axle 32 are both connected to the frame 1. The front axle 31 and the rear axle 32 each have two opposing wheel mounting surfaces 331. The first wheel bracket 41 includes a first bracket body 411 and a fixed bearing 412. The fixed bearing 412 is fixedly connected to the first bracket body 411. The second wheel bracket 42 includes a second bracket body 421 and a movable bearing 422. The movable bearing 422 is adapted to be movably connected to the second bracket body 421 through a shock absorber 51. Each wheel mounting surface 331 can be detachably mounted with a first wheel bracket 41 or a second wheel bracket 42, and the mounting height of the first bracket body 411 and the second bracket body 421 on the corresponding wheel mounting surface 331 is adjustable.
[0025] Specifically, the test trolley 10 can be used to simulate a whole vehicle, and the battery pack 9 can be installed on the battery bracket 2 of the test trolley 10. By replacing and adjusting the first wheel bracket 41 and the second wheel bracket 42 on the wheel mounting surface 331, the attitude of the test trolley 10 and the battery pack 9 can be adjusted, so that the test trolley 10 can meet the collision requirements of various bottoming tests, improve the functionality of the test trolley 10, reduce the development cycle of the whole vehicle, and reduce the cost of bottoming tests.
[0026] The battery bracket 2 can be connected to the lower middle part of the frame 1. The battery bracket 2 is used to install the battery pack 9. The battery pack 9 can be fixed to the frame 1 by the battery bracket 2. The battery bracket 2 can support and fix the battery pack 9, and prevent the battery pack 9 from shaking or shifting relative to the frame 1 during the bottoming test.
[0027] Both the front axle 31 and the rear axle 32 are connected to the frame 1 along the length of the test vehicle 10, i.e. Figure 1 In the longitudinal direction, the front axle 31 is located in front of the rear axle 32. In the width direction of the test rig 10, i.e. Figure 1 In the left and right direction, the two wheel mounting surfaces 331 on the front axle 31 are located at its left and right ends, and the two wheel mounting surfaces 331 on the rear axle 32 are located at its left and right ends respectively. The wheel mounting surfaces 331 can be connected to the wheels 52 through the first wheel bracket 41 or the second wheel bracket 42.
[0028] The first wheel bracket 41 includes a first bracket body 411 and a fixed bearing 412. The fixed bearing 412 can be welded to the first bracket body 411 through a bearing seat. The wheel 52 is rotatably connected to the fixed bearing 412. The wheel 52 connected to the fixed bearing 412 has no vibration damping function. That is, the wheel 52 is rotatably rigidly connected to the frame 1 to avoid changes in the position of the wheel 52 relative to the frame 1.
[0029] The second wheel bracket 42 includes a second bracket body 421 and a movable bearing 422. The movable bearing 422 is adapted to be movably connected to the second bracket body 421 via a shock absorber 51. The wheel 52 is rotatably connected to the movable bearing 422. The wheel 52 connected to the movable bearing 422 has a vibration damping function, that is, the wheel 52 can rotate relative to the frame 1 and can also bounce up and down, and the vibration is damped by the shock absorber 51 to simulate the movement of the whole vehicle.
[0030] Each wheel mounting surface 331 can be detachably mounted with a first wheel bracket 41 or a second wheel bracket 42, and the mounting height of the first bracket body 411 and the second bracket body 421 on the corresponding wheel mounting surface 331 is adjustable, so that the test trolley 10 can both simulate the parameters of the whole vehicle and replace the whole vehicle to carry out the whole vehicle bottoming test, and also carry out the trolley bottoming test.
[0031] When the test rig 10 simulates the parameters of the whole vehicle and performs the whole vehicle bottoming test in place of the whole vehicle, a second wheel bracket 42 is installed on each of the two wheel mounting surfaces 331 of the front axle 31, and a second wheel bracket 42 is installed on each of the two wheel mounting surfaces 331 of the rear axle 32. That is, the test rig 10 is equipped with four second wheel brackets 42. By adjusting the mounting height of each second bracket body 421 relative to the wheel mounting surface 331, the ground clearance of the battery pack 9 can be adjusted to be consistent with that of the whole vehicle. Each second wheel bracket 42 is equipped with a shock absorber 51 of the same specification as the whole vehicle, thereby simulating the suspension system of the whole vehicle. When the bottom of the battery pack 9 is impacted during the whole vehicle bottoming test, the wheel 52 can achieve the same radial runout as the whole vehicle, so that the test rig 10 maintains the same state as the whole vehicle during the test, thereby eliminating the need to carry out the whole vehicle bottoming test, reducing test costs and improving test efficiency.
[0032] When the test trolley 10 performs the trolley bottoming test, refer to Figure 1As shown, each of the two wheel mounting surfaces 331 of the front axle 31 is equipped with a first wheel bracket 41, and each of the two wheel mounting surfaces 331 of the rear axle 32 is equipped with a second wheel bracket 42. That is, the test bench vehicle 10 is equipped with two first wheel brackets 41 and two second wheel brackets 42. Each second wheel bracket 42 is equipped with a shock absorber 51 of the same specifications as the vehicle body. In other words, of the four wheels 52 of the test bench, the two wheels 52 connected to the front axle 31 have no shock absorption function, while the two wheels 52 connected to the rear axle 32 have a shock absorption function. This can be achieved by adjusting the position of each second bracket body 421 relative to the wheel mounting surface. The installation height of surface 331 is adjusted to make the ground clearance of the rear of the battery pack 9 consistent with that of the whole vehicle. By adjusting the installation height of each first bracket body 411 relative to the wheel mounting surface 331, the front of the battery pack 9 and the frame 1 is tilted up, which can simulate the bottoming test when the maximum pitch angle of the front of the whole vehicle is N, where 1°≤N≤5°, for example N=3°. Since there is no shock absorber 51 between the first wheel bracket 41 and the wheel 52, the tilt angle of the front of the battery pack 9 and the frame 1 can be kept stable to simulate the impact of the front of the whole vehicle tilting up on the bottom of the battery pack 9, which meets the requirements of the regulations or enterprise regulations for the trolley bottoming test.
[0033] In the above embodiments, the test trolley 10 can be used to simulate a whole vehicle. By replacing and adjusting the first wheel bracket 41 and the second wheel bracket 42 on the wheel mounting surface 331, the attitude of the test trolley 10 and the battery pack 9 can be adjusted, so that the test trolley 10 can meet the collision requirements of the whole vehicle bottoming test and the trolley bottoming test, thereby reducing the development cycle of the whole vehicle and reducing the cost of the bottoming test.
[0034] In some embodiments of this utility model, reference is made to Figures 1-4 As shown, both the first support body 411 and the second support body 421 are provided with connecting strip holes 43 extending along the height direction of the test trolley 10. The wheel mounting surface 331 has a support mounting hole 332. The connecting strip hole 43 and the support mounting hole 332 are connected by fasteners.
[0035] Specifically, the height direction of the test rig 10 is... Figure 1In the vertical direction, the connecting strip holes 43 on the first bracket body 411 and the second bracket body 421 both extend vertically. The connecting strip holes 43 are elongated holes. The wheel mounting surface 331 has a bracket mounting hole 332. Fasteners can pass through the connecting strip holes 43 and connect to the bracket mounting holes 332. By loosening the fasteners, the connecting strip holes 43 can be moved vertically relative to the fasteners, thereby adjusting the height of the first bracket body 411 and the second bracket body 421 relative to the corresponding wheel mounting surface 331. After the height adjustment is completed, the fasteners can be tightened to fix the height of the first bracket body 411 and the second bracket body 421 relative to the corresponding wheel mounting surface 331. The first wheel bracket 41 and the second wheel bracket 42 can also be detachably connected to the wheel mounting surface 331 by installing and removing the fasteners.
[0036] Optionally, the fastener is a screw, and the bracket mounting hole 332 can be a threaded hole that mates with the screw, or the fastener includes a bolt and a nut, and the bracket mounting hole 332 is a through hole, through which the bolt passes through the connecting strip hole 43 and the bracket mounting hole 332 and then mates with the nut.
[0037] In the above embodiment, by cooperating with the connecting strip hole 43, the bracket mounting hole 332 and the fastener, the first wheel bracket 41 and the second wheel bracket 42 can be detachably connected to the wheel mounting surface 331, and the mounting height of the first bracket body 411 and the second bracket body 421 on the corresponding wheel mounting surface 331 can be adjusted. This connection structure is simple and reliable, and the installation and height adjustment of the first bracket body 411 and the second bracket body 421 are convenient.
[0038] In some other embodiments of this utility model (not shown in the figure), a hydraulic lifting mechanism is installed on the wheel mounting surface 331. The hydraulic lifting mechanism can be detachably connected to the first wheel bracket 41 and the second wheel bracket 42 through a quick-release interface. The hydraulic lifting mechanism can adjust the mounting height of the first bracket body 411 and the second bracket body 421 on the corresponding wheel mounting surface 331 by lifting.
[0039] In some embodiments of this utility model, reference is made to Figure 2 As shown, there are multiple bracket mounting holes 332, which are arranged at intervals along the height direction of the test trolley 10.
[0040] Specifically, multiple bracket mounting holes 332 can be arranged in a row at intervals in the vertical direction. When raising and lowering the first wheel bracket 41 and the second wheel bracket 42 within a small range, it is not necessary to disassemble the fasteners. The fasteners can be raised and lowered only through the connecting strip hole 43 relative to the fasteners. When raising and lowering the first wheel bracket 41 and the second wheel bracket 42 within a large range, if the length of the connecting strip hole 43 does not meet the lifting range, the fasteners can be removed from the bracket mounting holes 332 and then installed in bracket mounting holes 332 at other heights to increase the lifting range of the first wheel bracket 41 and the second wheel bracket 42.
[0041] Meanwhile, each connecting strip hole 43 can be connected to bracket mounting holes 332 of different heights through multiple fasteners, thereby improving the stability of the connection between the first wheel bracket 41, the second wheel bracket 42 and the wheel mounting surface 331.
[0042] In addition, in the front-rear direction, each wheel mounting surface 331 may have multiple rows of bracket mounting holes 332. The first wheel bracket 41 and the second wheel bracket 42 are provided with multiple connecting strip holes 43 that correspond one-to-one with the multiple rows of bracket mounting holes 332. Each connecting strip hole 43 is connected to the corresponding row of bracket mounting holes 332 by at least one fastener, so as to further improve the stability of the connection between the first wheel bracket 41, the second wheel bracket 42 and the wheel mounting surface 331.
[0043] In the above embodiments, by providing multiple mounting holes spaced apart along the height direction of the test trolley 10, the lifting range of the first wheel bracket 41 and the second wheel bracket 42 can be increased, thereby enabling the test trolley 10 to simulate more vehicles with different ground clearances, increasing the types of vehicles that the test trolley 10 can simulate, and improving the applicability of the test trolley 10.
[0044] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2 As shown, in the length direction of the test vehicle 10, the connection position of at least one of the front axle 31 and the rear axle 32 to the frame 1 is adjustable.
[0045] In some embodiments, the connection position between the front axle 31 and the frame 1 in the longitudinal direction is adjustable. By adjusting the connection position between the front axle 31 and the frame 1 in the longitudinal direction, the distance D between the front axle 31 and the rear axle 32 in the longitudinal direction can be adjusted, thereby realizing the adjustment of the wheelbase of the test rig 10.
[0046] In other embodiments, the connection position between the rear axle 32 and the frame 1 in the longitudinal direction is adjustable. By adjusting the connection position between the rear axle 32 and the frame 1 in the longitudinal direction, the distance D between the front axle 31 and the rear axle 32 in the longitudinal direction can be adjusted, thereby realizing the adjustment of the wheelbase of the test rig 10.
[0047] In some other embodiments, in the front-rear direction, the connection positions of the front axle 31 and the frame 1 are adjustable, and the connection positions of the rear axle 32 and the frame 1 are adjustable. By adjusting the connection positions of the front axle 31 and the rear axle 32 with the frame 1 in the front-rear direction, the distance D between the front axle 31 and the rear axle 32 in the front-rear direction can be adjusted, that is, the wheelbase of the test trolley 10 can be adjusted. Since the connection positions of both the front axle 31 and the rear axle 32 with the frame 1 are adjustable, the adjustment range of the wheelbase of the test trolley 10 can be increased.
[0048] Optionally, the adjustable range of the distance D between the front axle 31 and the rear axle 32 in the front-rear direction is: 2.6 m to 3.2 m, and its adjustable range includes the wheelbase ranges from Class A cars to Class C cars.
[0049] In the above embodiments, in the length direction of the test trolley 10, the connection position of at least one of the front axle 31 and the rear axle 32 with the frame 1 is adjustable to adjust the wheelbase of the test trolley 10, so that the test trolley 10 can simulate vehicles with different wheelbases, thereby increasing the types of vehicles that the test trolley 10 can simulate and enhancing the applicable range of the test trolley 10.
[0050] Refer to Figure 1 、 Figure 2 and Figure 6 As shown, the frame 1 is an "eye" - shaped frame structure. The frame 1 includes a left longitudinal beam 11, a right longitudinal beam 12 and a plurality of connecting beams 13. The left longitudinal beam 11 and the right longitudinal beam 12 are arranged at intervals in the left - right direction, and the plurality of connecting beams 13 are arranged at intervals in the front - rear direction. The left longitudinal beam 11 and the right longitudinal beam 12 are connected by the plurality of connecting beams 13. Both the front axle 31 and the rear axle 32 are provided with a left connecting chute and a right connecting chute. The left connecting chute is slidably connected with the left longitudinal beam 11 in the front - rear direction, and the right connecting chute is slidably connected with the right longitudinal beam 12 in the front - rear direction to achieve the position adjustment of the front axle 31 and the rear axle 32 in the front - rear direction. The left connecting chute can be selectively locked and cooperated with the left longitudinal beam 11 through a locking member, and the right connecting chute can be selectively locked and cooperated with the right longitudinal beam 12 through a locking member. The locking member can be a locking pin or a screw.
[0051] In some other embodiments, at least one of the front axle 31 and the rear axle 32 is connected to the frame 1 through a ball screw mechanism, and the wheelbase of the test trolley 10 can be adjusted through the ball screw mechanism.
[0052] In some embodiments of the present utility model, refer to Figure 1 and Figure 5 As shown, the front axle 31 is formed with an arched front avoidance groove 311. In the length direction of the test trolley 10, the front axle 31 is adapted to avoid at least part of the battery pack 9 at the front avoidance groove 311. The rear axle 32 is formed with an arched rear avoidance groove 321. In the length direction of the test trolley 10, the rear axle 32 is adapted to avoid at least part of the battery pack 9 at the rear avoidance groove 321.
[0053] Specifically, the front axle 31 and the rear axle 32 can be arch bridge-type structures. The front axle 31 has an arched front clearance groove 311 formed on its lower part, and the rear axle 32 has an arched rear clearance groove 321 formed on its lower part. The arched front axle 31 and the rear axle 32 have strong load-bearing capacity to prevent deformation of the front axle 31 and the rear axle 32 during the bottoming test and to improve the service life of the test trolley 10.
[0054] In the longitudinal direction, the front axle 31 is adapted to avoid at least a portion of the battery pack 9 at the front clearance groove 311, and the rear axle 32 is adapted to avoid at least a portion of the battery pack 9 at the rear clearance groove 321. During the bottoming test, the test vehicle 10 moves forward over the ground protrusion. In this process, the front clearance groove 311 can avoid the ground protrusion, and the ground protrusion collides with the battery pack 9. Then the rear clearance groove 321 also avoids the ground protrusion to prevent the front axle 31 and the rear axle 32 from colliding with the ground protrusion.
[0055] In the above embodiment, both the front clearance groove 311 and the rear clearance groove 321 are arched to ensure the structural strength of the front axle 31 and the rear axle 32. In the front-rear direction, the front clearance groove 311 and the rear clearance groove 321 can avoid the bottoming collision part of the battery pack 9 to prevent the front axle 31 and the rear axle 32 from colliding with ground protrusions and ensure the smooth progress of the bottoming test.
[0056] In some embodiments of this utility model, reference is made to Figure 1 and Figure 6 As shown, the test trolley 10 also includes at least one counterweight 6, which is detachably connected to the frame 1 and the position of the counterweight 6 on the frame 1 is adjustable.
[0057] Specifically, the frame 1 may have multiple counterweight pools 14 arranged sequentially in the front-rear direction. Each counterweight pool 14 is a groove structure formed by the left longitudinal beam 11, the right longitudinal beam 12 and the connecting beam 13. The bottom of each counterweight pool 14 may have multiple mounting holes. The counterweight 6 can be detachably connected to the mounting holes through connectors. The center of gravity of the test trolley 10 can be adjusted by adding or removing counterweights 6 and adjusting the connection of counterweights 6 to different mounting holes.
[0058] Reference Figure 1 and Figure 6 As shown, the frame 1 may have a front counterweight pool 14a, a middle and rear counterweight pool 14b and a rear counterweight pool 14 arranged in the front and rear directions. The counterweights 6 may have various weight specifications such as 40kg, 20kg, 10kg and 5kg. The number, weight specifications and the position of the counterweights 6 installed in different counterweight pools 14 can be adjusted according to the whole vehicle that the test trolley 10 needs to simulate, so that the center of gravity of the test trolley 10 is consistent with the center of gravity of the whole vehicle.
[0059] In the above embodiment, the counterweight 6 is detachably connected to the frame 1, and the position of the counterweight 6 on the frame 1 is adjustable. By adjusting the different positions of the counterweight 6 on the frame 1, the number of counterweights 6 used, and the specifications, the whole vehicle simulation of different center of gravity ranges can be realized, thereby improving the simulation accuracy of the test bench 10 in the bottoming test, increasing the types of vehicles that the test bench 10 can simulate, and improving the applicability of the test bench 10.
[0060] In some embodiments of this utility model, reference is made to Figure 7 As shown, the battery bracket 2 includes: an adapter frame 21 and a plurality of connecting brackets 22. The adapter frame 21 is connected to the vehicle frame 1. In the length and width directions of the test bench vehicle 10, the adapter frame 21 has a plurality of adapter holes 211 arranged at intervals. One end of the connecting bracket 22 is detachably connected to the adapter hole 211, and the other end of the connecting bracket 22 is adapted to be detachably connected to the battery pack 9.
[0061] Specifically, the adapter frame 21 can be fixed on the vehicle frame 1. The adapter frame 21 has multiple adapter holes 211, which can be arranged at intervals in the front-back and left-right directions. The lower end of the connecting bracket 22 is connected to the battery pack 9, and the upper end of the connecting bracket 22 can be connected to the corresponding adapter hole 211 according to the shape of the battery pack 9, so that the battery bracket 2 can be adapted to battery packs 9 of different shapes.
[0062] At the same time, the positions of the battery pack 9 and the connecting bracket 22 installed on the adapter frame 21 can be adjusted according to the position of the battery pack 9 relative to the vehicle, so as to adjust the position of the battery pack 9 relative to the vehicle frame 1 in the front-back and left-right directions.
[0063] In addition, the connecting bracket 22 is detachably connected to both the battery pack 9 and the adapter hole 211 to facilitate the installation and removal of the battery pack 9. The connecting bracket 22 can be a double-ended stud structure, with the upper end of the connecting bracket 22 threaded into the adapter hole 211 and the lower end of the connecting bracket 22 threaded into the battery pack 9.
[0064] In the above embodiment, the adapter frame 21 has a plurality of adapter holes 211 arranged at intervals. The shape of the battery pack 9 can be adapted by adjusting the connection bracket 22 to connect with different adapter holes 211, so that the battery bracket 2 can fix various types of battery packs 9, improving the versatility of the battery bracket 2. It can also realize the adjustment of the position of the battery pack 9 relative to the frame 1, so as to more accurately simulate the installation position of the battery pack 9 in the whole vehicle and improve the simulation accuracy of the test bench 10.
[0065] It should be noted that, since the connecting bracket 22 is detachable, the battery bracket 2 can be equipped with connecting brackets 22 of various height specifications. The battery pack 9 of the corresponding height specification can be selected according to the thickness of the battery pack 9, so as to avoid interference between the battery pack 9 and the adapter frame 21 and improve the versatility of the battery bracket 2.
[0066] In some embodiments of this utility model, reference is made to Figure 1 As shown, the test trolley 10 also includes a controller and a braking system 7, wherein the controller is used to control the braking system 7 to brake according to the remote braking signal.
[0067] Specifically, the controller can communicate with the braking system 7. The controller can be a logo controller and has a wireless receiver capable of receiving remote braking signals. The braking system 7 may include a solenoid valve, a cylinder, a brake pump, a brake disc, and a brake caliper. The brake disc is connected to the wheel 52. When the controller receives the remote braking signal, it controls the solenoid valve to move, thereby causing the brake pump to work and generate hydraulic pressure to drive the brake caliper to grip the brake disc, thus realizing remote braking of the braking system 7. After the battery pack 9 has collided, the braking system 7 can be controlled to stop the test trolley 10 via the remote braking signal.
[0068] In the above embodiment, the controller is used to control the braking system 7 to brake according to the remote braking signal. The test trolley 10 does not need to be equipped with a strip switch to trigger the braking system 7, so as to avoid the strip switch blocking the image captured when the battery pack 9 is hit. The braking system 7 can ensure that the battery pack 9 stops safely after the collision, which is suitable for bottoming tests to be carried out outdoors or in the test room.
[0069] In some embodiments of this utility model, reference is made to Figure 6 As shown, the test trolley 10 also includes a reinforcing frame 8, which is connected to the top of the frame 1.
[0070] Specifically, the reinforcing frame 8 is connected above the chassis 1. The reinforcing frame 8 can avoid the battery bracket 2 and the battery pack 9 to prevent the reinforcing frame 8 from affecting the bottoming test. The reinforcing frame 8 can strengthen the chassis 1. When the battery pack 9 is hit by a collision, the collision load is transferred to the chassis 1 through the battery bracket 2. The chassis 1 can disperse the collision force through the reinforcing frame 8 connected to it, thereby reducing the risk of chassis 1 deformation and improving the service life and reliability of the test trolley 10.
[0071] In some embodiments of this utility model, reference is made to Figure 6 As shown, the reinforcing frame 8 includes: a front reinforcing frame 81, a rear reinforcing frame 82, a connecting frame 83, and a plurality of reinforcing posts 84. The area where the frame 1 is connected to the front axle 31 corresponds to at least a portion of the front reinforcing frame 81, the area where the frame 1 is connected to the rear axle 32 corresponds to at least a portion of the rear reinforcing frame 82, the connecting frame 83 is connected between the front reinforcing frame 81 and the rear reinforcing frame 82, and the area where the frame 1 is connected to the battery bracket 2 corresponds to at least a portion of the connecting frame 83. The front reinforcing frame 81, the connecting frame 83, and the rear reinforcing frame 82 are all connected to the frame 1 through at least one reinforcing post 84.
[0072] Specifically, the front reinforcing frame 81 can be connected to the front side of the connecting frame 83, and the rear reinforcing frame 82 can be connected to the rear side of the connecting frame 83. The front reinforcing frame 81, the connecting frame 83, and the rear reinforcing frame 82 can all be rectangular frame structures. X-shaped reinforcing ribs 85 can be arranged along the diagonal of the rectangular frame inside the front reinforcing frame 81 and the rear reinforcing frame 82 to further improve the strength of the front reinforcing frame 81 and the rear reinforcing frame 82.
[0073] In the vertical direction, the area where the frame 1 and the front axle 31 are connected corresponds at least partially to the front reinforcing frame 81. The front reinforcing frame 81 is connected to the frame 1 by one or more reinforcing posts 84. The front reinforcing frame 81 can improve the strength of the front part of the frame 1 and prevent the area where the frame 1 fixes the front axle 31 from collapsing and deforming.
[0074] In the vertical direction, the area where the frame 1 and the battery bracket 2 are connected corresponds at least part to the connecting frame 83. The connecting frame 83 is connected to the frame 1 by one or more reinforcing posts 84. The connecting frame 83 can improve the strength of the middle part of the frame 1 and prevent the area where the frame 1 fixes the battery bracket 2 from collapsing and deforming.
[0075] In the vertical direction, the area where the frame 1 and the rear axle 32 are connected corresponds at least partially to the rear reinforcing frame 82. The rear reinforcing frame 82 is connected to the frame 1 by one or more reinforcing posts 84. The rear reinforcing frame 82 can improve the strength of the rear of the frame 1 and prevent the area where the frame 1 fixes the rear axle 32 from collapsing and deforming.
[0076] In the above embodiment, the collision load on the frame 1 can be distributed to the front reinforcing frame 81, the connecting frame 83 and the rear reinforcing frame 82 by multiple reinforcing pillars 84, so as to avoid load concentration and reduce the risk of frame 1 deformation.
[0077] Tests have verified that the test trolley 10, equipped with a reinforced frame 8, can meet the bottoming simulation test at a speed of at least 30 km / h, and the strain stress on the frame 1 shows no significant change.
[0078] In some embodiments of this utility model, the wheel 52 can be a 235 / 70R16 tire with a radial diameter of 345mm and a single tire bearing capacity of 800kg. The weight of the test trolley 10 can be simulated up to 3200kg.
[0079] According to the embodiment of this utility model, the test trolley 10 can simulate parameters such as the weight of the whole vehicle, wheelbase, center of gravity in the X direction (front and rear direction), and position of the battery pack 9 relative to the center of gravity of the whole vehicle. The trolley bottoming test can be carried out in accordance with the requirements of regulations. In addition, by ensuring that the test trolley 10 has the same posture as the whole vehicle, the test trolley 10 can be used to replace the whole vehicle to carry out the whole vehicle bottoming test.
[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A test trolley, characterized in that, include: A frame (1) and a battery bracket (2), wherein the battery bracket (2) is connected to the frame (1) and the battery bracket (2) is used to install a battery pack (9); A front axle (31) and a rear axle (32), both of which are connected to the frame (1), and both of which have two opposing wheel mounting surfaces (331); Multiple first wheel brackets (41), each first wheel bracket (41) includes a first bracket body (411) and a fixed bearing (412), the fixed bearing (412) being fixedly connected to the first bracket body (411); Multiple second wheel brackets (42), each second wheel bracket (42) includes a second bracket body (421) and a movable bearing (422), the movable bearing (422) being adapted to be movably connected to the second bracket body (421) via a shock absorber (51); Each of the wheel mounting surfaces (331) is detachably mounted with either the first wheel bracket (41) or the second wheel bracket (42), and the mounting height of the first bracket body (411) and the second bracket body (421) on the corresponding wheel mounting surface (331) is adjustable.
2. The test trolley according to claim 1, characterized in that, Both the first support body (411) and the second support body (421) are provided with connecting strip holes (43) extending along the height direction of the test trolley; The wheel mounting surface (331) has a bracket mounting hole (332), and the connecting strip hole (43) is connected to the bracket mounting hole (332) by a fastener.
3. The test trolley according to claim 2, characterized in that, The bracket mounting holes (332) are multiple, and the multiple bracket mounting holes (332) are arranged at intervals along the height direction of the test trolley.
4. The test trolley according to claim 1, characterized in that, In the longitudinal direction of the test trolley, the connection position of at least one of the front axle (31) and the rear axle (32) to the frame (1) is adjustable.
5. The test trolley according to claim 1, characterized in that, The front axle (31) has an arched front clearance groove (311) in the longitudinal direction of the test trolley, and the front axle (31) is adapted to avoid at least a portion of the battery pack (9) at the front clearance groove (311); The rear axle (32) has an arched rear clearance groove (321) in the longitudinal direction of the test trolley, and the rear axle (32) is adapted to avoid at least a portion of the battery pack (9) at the rear clearance groove (321).
6. The test trolley according to claim 1, characterized in that, The test trolley also includes at least one counterweight (6), which is detachably connected to the frame (1), and the position of the counterweight (6) on the frame (1) is adjustable.
7. The test trolley according to claim 1, characterized in that, The battery holder (2) includes: The adapter frame (21) is connected to the frame (1). In the length and width directions of the test trolley, the adapter frame (21) has a plurality of adapter holes (211) arranged at intervals. Multiple connecting brackets (22), one end of which is detachably connected to the adapter hole (211) and the other end of which is adapted to be detachably connected to the battery pack (9).
8. The test trolley according to claim 1, characterized in that, The test trolley also includes a controller and a braking system (7), wherein the controller is used to control the braking system (7) to brake according to the remote braking signal.
9. The test trolley according to any one of claims 1-8, characterized in that, The test trolley also includes a reinforcing frame (8), which is connected above the frame (1).
10. The test trolley according to claim 9, characterized in that, The strengthening framework (8) includes: The front reinforcing frame (81) is located in an area where the frame (1) and the front axle (31) are connected, and at least a portion of the front reinforcing frame (81) corresponds to the area of the front reinforcing frame (81). The rear reinforcing frame (82) is located in an area where the frame (1) and the rear axle (32) are connected, and at least a portion of the rear reinforcing frame (82) corresponds to the area of the rear reinforcing frame (82). A connecting frame (83) is connected between the front reinforcing frame (81) and the rear reinforcing frame (82), and at least a portion of the area where the frame (1) and the battery bracket (2) are connected corresponds to the connecting frame (83). Multiple reinforcing posts (84), the front reinforcing frame (81), the connecting frame (83) and the rear reinforcing frame (82) are all connected to the frame (1) through at least one of the reinforcing posts (84).