New energy product drop experiment test platform and test method thereof

Abstract

The invention provides a new energy product drop experiment test platform and a test method thereof. The platform comprises a rack, a bearing mechanism, a lifting mechanism connected with the bearing mechanism, a video recording mechanism, a fire prevention and control mechanism and a controller. The bearing mechanism comprises a bearing part used for bearing a test sample, a clamping device arranged on the bearing part and a releasing device, and the controller is configured to receive a remote releasing instruction to control the releasing device to release the test sample and receive a remote fire protection starting instruction to control the fire protection prevention and control mechanism to start. By adopting a remote control release mechanism and an integrated fire-fighting prevention and control system, complete isolation between personnel and a dangerous environment in a test process is realized, personal safety threats to operators caused by sample fire and explosion in a traditional test are effectively avoided, and the problem of potential safety hazards of a high-energy battery drop test is solved; and through the adjustable bearing mechanism, the device can be adapted to tests of new energy products of various specifications, and the equipment utilization rate and the economical efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery testing, in particular to a new energy product drop test platform and a testing method thereof. BACKGROUND

[0002] With the rapid development of the new energy industry, the market application scale of power batteries and energy storage batteries continues to expand. While the country vigorously promotes the application of new energy, it also puts forward increasingly strict requirements for the safety standards of its use. In a series of national standards such as GB / T 36276, GB / T 38031, GB / T 36972, GB / T 9535, and GB / T 2423.8, explicit test provisions are made for the drop scenarios that may occur during transportation, use, and maintenance of new energy products (such as battery packs and photovoltaic modules). The drop standards for different product types and application scenarios are also becoming increasingly detailed and standardized.

[0003] In particular, in order to realistically simulate the most serious consequences that may be caused by accidental drops of products, standards usually require that the test sample must be at 100% state of charge (SOC). This requirement significantly increases the risk probability of high-energy release phenomena such as thermal runaway, fire, and explosion caused by internal short circuits in the battery pack during the drop test process. Therefore, how to effectively prevent and control safety risks during testing has become a core issue that must be faced by each testing laboratory.

[0004] Currently, the industry generally faces the following technical difficulties when conducting drop tests on large new energy products (such as electric vehicle battery packs, energy storage cabinet modules, and charging piles): first, the test samples usually have large mass (up to several tons), large volume, and different shapes; second, the drop height required by the test standard is diverse. Pre-installed lifting steel ropes are required for the experimental samples, and large cranes are used to assist in completing the test task. The installation of lifting steel ropes and the operation of large cranes by humans not only pose certain safety risks, but also have high testing costs, which do not meet the basic requirements of production safety, cost economy, rapid completion, and comprehensive standard integration. SUMMARY

[0005] The purpose of the present application is to provide a new energy product drop test platform and a testing method thereof that are suitable for testing samples of various sizes and are safe.

[0006] To achieve the above-mentioned purpose, the present application provides a new energy product drop test platform, comprising: a rack; The bearing mechanism comprises a bearing for bearing a test sample, a clamping device arranged on the bearing for clamping the test sample placed on the bearing, and a releasing device arranged on the bearing for releasing the test sample from the bearing mechanism; The lifting mechanism is arranged on the rack and connected with the bearing mechanism, and is used for driving the bearing mechanism to overturn from a horizontal posture to a vertical posture and driving the bearing mechanism to rise to a preset drop height; The video recording mechanism comprises a plurality of cameras for recording the drop process of the test sample; The fire control mechanism is used for processing the test sample after dropping; The controller is electrically connected with the clamping device, the releasing device, the lifting mechanism and the fire control mechanism, respectively; The clamping device comprises at least one clamping piece and a movable piece connecting the clamping piece and the bearing, and the clamping piece is driven to move to clamp the test sample by driving the movable piece; The controller is configured to accept remote release instructions to control the releasing device to release the test sample, and accept remote fire starting instructions to control the fire control mechanism to start.

[0007] Further, the movable piece comprises a hydraulic rod or a pneumatic rod.

[0008] Further, the lifting mechanism comprises a first lifting assembly, the first lifting assembly comprises a driving part and a lifting part connected with the driving part, the bearing mechanism is connected with the lifting part, and the driving part drives the lifting part to drive the bearing mechanism to move up and down relative to the rack.

[0009] Further, the lifting mechanism further comprises a second lifting assembly connected with the first lifting assembly, and the second lifting assembly drives the first lifting assembly to move up and down relative to the rack.

[0010] Further, the releasing device comprises a releasing plate detachably connected with the bearing, and at least one switch piece arranged between the bearing and the releasing plate, and the switch piece is electrically connected with the controller; When the bearing mechanism is in a vertical posture, the releasing plate is located below the test sample, and the controller is configured to accept remote release instructions to control the switch piece, so that the releasing plate and the bearing are separated, and the test sample is separated from the bearing mechanism.

[0011] Further, the video recording mechanism further comprises a video recording host, and the plurality of cameras are in communication connection with the video recording host, and are used for transmitting the recorded video signals to the video recording host for storage.

[0012] Further, the controller comprises a local control unit and a remote control unit; the local control unit is used for accepting a local clamping instruction to control the clamping device to clamp the test sample and accepting a local lifting instruction to control the lifting mechanism to lift; the remote control unit is used for receiving the remote release instruction and the remote fire starting instruction.

[0013] Further, the test sample comprises any one of an electric vehicle battery pack, an electric bicycle battery, a photovoltaic assembly, a charging pile and a storage battery module with multiple groups of electric core groups arranged in parallel.

[0014] Further, the carrier is provided with a docking piece, the lifting mechanism comprises a connecting piece matched with the docking piece, and the docking piece and the connecting piece are matched to realize the connection of the lifting mechanism and the carrier mechanism.

[0015] The application also provides a test method based on the new energy product drop test platform, which is characterized by comprising the following steps: The test sample is horizontally placed on the carrier of the carrier mechanism, and the movable part of the clamping device is driven to move the clamping part to clamp and fix the test sample; The lifting mechanism is driven to overturn the carrier mechanism and the test sample thereon from a horizontal posture to a vertical posture and lift to a preset drop height; The release instruction is sent to the controller through remote control; The controller controls the release device to release the test sample according to the release instruction, so that the test sample freely falls, and the video recording mechanism records the falling process of the test sample; When the test sample loses control after falling, the fire control mechanism is started through remote control.

[0016] According to the scheme of the application, by adopting the remote control release mechanism and the integrated fire control system, the complete isolation of the test process personnel and the dangerous environment is realized, the personal safety threat to the operator caused by the sample fire and explosion in the traditional test is effectively avoided, and the safety hidden danger problem of the high-energy battery drop test is solved; through the adjustable clamping device and the modular carrier design, a single device can adapt to the test of new energy products of multiple specifications, which significantly improves the equipment utilization rate and economy; for the technical problem that the large modular energy storage products are easy to scatter during the test process, the unique carrier mechanism design provides overall support for the multiple groups of electric core groups arranged in parallel, and ensures the feasibility and safety of the test of special structure samples.

[0017] The above description is only a summary of the technical scheme of the present application, in order to make the technical means of the present application more clearly understood, and can be implemented according to the content of the description, the following will be described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Part structure schematic diagram of the rack and lifting mechanism of the test platform provided by an embodiment of the present application.

[0019] Figure 2 Part structure schematic diagram of the bearing mechanism of the test platform provided by an embodiment of the present application.

[0020] Among them, the rack-1; the lifting mechanism-2; the lifting part-21; the second lifting assembly-22; the bearing mechanism-3; the bearing-31; the clamping device-32; the clamping-321; the movable part-322; the release device-33; the release plate-331; the switch part-332; the docking part-34. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] In order to make the technical personnel in the technical field better understand the present application scheme, the present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0023] Please see Figure 1 and Figure 2 An embodiment of the present application provides a new energy product drop experiment test platform, which comprises a rack 1, a lifting mechanism 2 arranged on the rack 1, a bearing mechanism 3 connected with the lifting mechanism 2, a video recording mechanism (not shown), a fire control mechanism (not shown) and a controller (not shown).

[0024] The bearing mechanism 3 is a bearing and release execution unit of the test sample, which comprises a bearing 31, a clamping device 32 and a release device 33, which cooperates to realize stable fixation and controllable release of the test sample. The bearing 31 is a plate-shaped structure, which is used as the bearing basis of the test sample. When the bearing mechanism 3 is placed horizontally, the bearing 31 is in a horizontal state, which provides a flat placement surface for the test sample. The clamping device 32 is assembled on the bearing 31, which is used for clamping and fixing the test sample placed on the bearing 31. The release device 33 is also arranged on the bearing 31, which is used for releasing the test sample when testing is needed, so that the test sample is separated from the bearing mechanism 3. Specifically, the clamping device 32 comprises at least one clamping piece 321 and a movable piece 322 connecting the clamping piece 321 and the carrier 31. The clamping piece 321 can be driven to move along the direction of approaching or moving away from the carrier 31 by driving the movable piece 322, thereby realizing the clamping of the test sample. In the embodiment, the clamping piece 321 is provided as two, and each clamping piece 321 is connected with the carrier 31 through two movable pieces 322. The movable piece 322 is preferably a hydraulic rod or a pneumatic rod, which has the advantages of stable driving force and rapid response. In other optional embodiments, the movable piece 322 can also adopt a sliding fit structure of a sliding rail and a sliding block, or a meshing transmission structure of a gear and a rack, which can also realize the stable movement of the clamping piece 321 along the direction of approaching or moving away from the carrier 31. By controlling the adjustment of the clamping piece 321 in the direction of approaching or moving away from the carrier 31, the carrier mechanism 3 can clamp and fix test samples of different thicknesses.

[0025] Optionally, the four movable pieces 322 are slidably connected with the carrier 31 through a sliding fit structure to realize the stable displacement of the movable piece 322 along the width adjustment direction of the carrier 31, thereby adapting to the clamping and fixing requirements of test samples of different width specifications. Optionally, the four movable pieces 322 are drivingly connected with the carrier 31 through two groups of symmetrically arranged threaded screw rail tracks. The spacing adjustment of the movable piece 322 is realized by the rotation drive of the threaded screw, thereby meeting the clamping requirements of the test sample. Optionally, the two groups of threaded screw rail tracks are symmetrically arranged on both sides of the carrier 31 along the width adjustment direction of the carrier 31, and each group of rail tracks takes a threaded screw as a core adjustment component. The two ends of the threaded screw are rotatably connected with the carrier 31 through a bearing seat, and the axis direction thereof is consistent with the width adjustment direction of the carrier 31, thereby ensuring the accuracy of the adjustment direction. The four movable pieces 322 are divided into two groups, and each group of two movable pieces 322 is correspondingly assembled on a group of threaded screw rail tracks. Each movable piece 322 is provided with an internal threaded hole or a threaded sleeve matched with the threaded screw, and a screw transmission pair is formed between the threaded screw and the movable piece 322 through threaded engagement. Meanwhile, a slide rail-slide block structure can be arranged between the movable piece 322 and the carrier 31 as a guide constraint to ensure the stability of the movement. When the width of the test sample exceeds the preset clamping range, the rotation of the two sets of threaded screws can be converted into the linear motion of the movable part 322 by using the motion conversion characteristics of the screw pair. If the clamping width needs to be expanded, the two sets of threaded screws are driven to rotate in the same direction, which drives the four movable parts 322 to move away from the center of the carrier 31. If the clamping width needs to be reduced, the two sets of threaded screws are driven to rotate in opposite directions, which drives the four movable parts 322 to move towards the center of the carrier 31. By precisely controlling the rotation angle of the threaded screws, the spacing between the four movable parts 322 can be accurately adjusted, which in turn drives the clamping part connected to the movable part 322 to adjust the clamping range synchronously, ensuring that the clamping part tightly fits the side of the test sample of different widths (including exceeding the preset value), and achieving reliable clamping and fixation. The threaded screw track adjustment structure has the advantages of high adjustment accuracy, good self-locking performance, and strong carrying capacity, and is mature in structure and convenient to operate, effectively expanding the width adaptation range of the clamping device.

[0026] Further, the clamping part 321 is rotatably assembled at one end of the movable part 322 away from the carrier 31, forming an opening and closing structure that can rotate around the connection point: when placing the test sample, the two clamping parts 321 are driven to rotate around their respective rotation connection points away from the carrier 31, forming an avoidance channel between them for the test sample to pass through. After the sample is placed, the two clamping parts 321 are driven to rotate around the rotation connection points to the position of the carrier 31 to reset, so that the clamping surface of the clamping part 321 is aligned with the side of the test sample, and the clamping part 321 and the carrier 31 can clamp and fix test samples of different sizes. Then the movable part 322 drives the clamping part 321 to move towards the position of the carrier 31 to clamp the test sample with the carrier 31. By driving the clamping part 321 to move, test samples of different thicknesses can be clamped and fixed.

[0027] The specific installation process of the test sample is as follows: Step one, posture adjustment: place the carrier mechanism 3 as a whole in a horizontal posture, and keep the carrier 31 horizontal to provide a stable placement reference for the test sample; Step two, avoidance preparation: drive the two clamping parts 321 to rotate around their rotation connection points with the movable part 322 away from the position of the carrier 31, and drive each movable part 322 to extend, driving the clamping part 321 to move away from the carrier 31, forming an avoidance channel with sufficient width between the two clamping parts 321, ensuring that the test sample can enter the carrier area of the carrier 31 without interference; Step three, sample placement: place the test sample to be tested along the avoidance channel on the preset carrier position of the carrier 31, ensuring that the bottom of the sample is in close contact with the carrier surface of the carrier 31; Step four, clamping reset: drive the two clamping pieces 321 to rotate around the respective rotation connection points to the direction of the carrier 31, so that the clamping surface of the clamping piece 321 is accurately directed to the side of the test sample (as shown in Figure 2), and the positioning of the clamping posture is completed; Step five, clamping and fixing: drive each movable piece 322 to contract, which drives the corresponding clamping piece 321 to move in the direction of approaching the carrier 31, until the clamping surfaces of the two clamping pieces 321 are tightly fitted on both sides of the test sample, and the carrier surface of the carrier 31 and the clamping surface of the clamping piece 321 form a cooperative clamping force, firmly fixing the test sample on the carrier 31. Through the above installation process, the clamping device 32 can adjust the contraction stroke of the movable piece 322 according to the thickness of the test sample, and then adapt to the clamping needs of test samples of different thicknesses; at the same time, since the clamping piece 321 has a preset clamping width, it can form effective clamping and fixing of test samples of different transverse sizes in cooperation with the carrier 31. The clamping device 32 is designed to adjust the posture and the stroke, which can not only accurately clamp and fix the test sample, ensure that the sample does not move or fall off during subsequent transportation, posture switching (such as from horizontal to vertical) and test preparation process, but also adapt to the clamping needs of test samples of different sizes and shapes by adjusting the clamping force and the clamping range, improving the versatility and adaptability of the carrier mechanism 3.

[0028] It should be noted that the controller is electrically connected with the clamping device 32 for realizing the automatic control of the avoiding preparation, clamping reset and clamping and fixing actions in the test sample installation process, improving the operation accuracy and efficiency. Specifically, the controller is electrically connected with the rotation driving assembly (such as a micro servo motor) of the clamping piece 321 and the driving unit (such as a hydraulic driving module, a pneumatic control valve, an electric driving motor, etc.) of the movable piece 322, which can output accurate control signals to drive each component to act cooperatively through a preset program or external input instruction.

[0029] The release device 33 specifically comprises a release plate 331 and at least one switch piece 332, wherein the release plate 331 is detachably assembled with the bearing piece 31 of the bearing mechanism 3, so as to realize subsequent quick separation action. Each switch piece 332 is arranged at a corresponding assembly position between the bearing piece 31 and the release plate 331, and each switch piece 332 is electrically connected with the controller through a wire, so that the controller can accurately control the working state of the switch piece 332. When the bearing mechanism 3 is in a preset vertical test posture, the release plate 331 is just located below the test sample at the assembly position, and the bearing surface of the release plate 331 is in contact or has a preset gap with the bottom of the test sample, so as to stably support the test sample. The controller is pre-configured with a remote signal receiving module, which can receive a remote release instruction sent by the outside in real time. When the controller receives the release instruction, it will immediately output a control signal to each switch piece 332, so that the switch piece 332 performs an unlocking, disconnection or triggering action, releases the detachable connection constraint between the release plate 331 and the bearing piece 31, and makes the release plate 331 quickly separate from the bearing piece 31. At this time, the test sample is separated from the support of the bearing mechanism 3 under the action of its own gravity, the preset release action is completed, and the automatic and remote control requirement of the sample release in the test process is met.

[0030] The lifting mechanism 2 is used to drive the bearing mechanism 3 to flip from a horizontal posture to a vertical posture and to lift the bearing mechanism 3 to a preset drop height. Optionally, the lifting mechanism 2 is electrically connected with the controller, and the automatic control is realized by the controller. The lifting mechanism 2 comprises a first lifting assembly and a second lifting assembly. The first lifting assembly is composed of a driving part (not shown) and a lifting part 21. The lifting part 21 is in transmission connection with the driving part. The bearing mechanism 3 is assembled on the lifting part 21. The driving part can drive the lifting part 21 to move up and down along the vertical direction, thereby driving the bearing mechanism 3 to move up and down relative to the rack 1. The second lifting assembly 22 is connected with the first lifting assembly and can drive the first lifting assembly to move up and down relative to the rack 1. Through the cooperative action of the first lifting assembly and the second lifting assembly 22, the flexible adjustment and large stroke lifting requirement of the lifting stroke of the bearing mechanism 3 are realized. When the bearing mechanism 3 with the test sample is connected to the lifting part 21, the second lifting assembly 22 is first driven to move, and then the first lifting assembly is driven to drive the bearing mechanism 3 to vertically ascend along the rack 1 until the preset drop test height is reached. After the controller determines that the height is in place through the signal feedback of the position sensor, the lifting mechanism 2 stops moving, thereby preparing for the subsequent release and drop of the test sample. In this process, the controller can accurately adjust the flip angle, lifting speed and final drop height of the bearing mechanism 3 according to the preset test parameters, so as to ensure the standardization and accuracy of the test process.

[0031] In this embodiment, the first lifting assembly adopts a motor-driven belt transmission structure, and the driving part thereof is a servo motor. The lifting part 21 comprises a driving synchronous pulley, a driven synchronous pulley, a synchronous belt, and a bearing mounting seat. The driving synchronous pulley is in transmission connection with the output shaft of the servo motor. The driven synchronous pulley is rotatably installed at a preset height position of the rack 1 through a bearing seat. The synchronous belt is wound between the driving synchronous pulley and the driven synchronous pulley, forming a closed transmission structure. The bearing mounting seat is fixedly assembled on the synchronous belt, and is detachably connected with the bearing mechanism 3, constituting the lifting support base of the bearing mechanism 3. When the servo motor is started, the output shaft drives the driving synchronous pulley to rotate, and through the meshing transmission of the synchronous belt and the driven synchronous pulley, the bearing mounting seat moves linearly along the extension direction (vertical direction) of the synchronous belt, thereby driving the bearing mechanism 3 to realize precise up-down displacement relative to the rack 1. The belt transmission structure is similar to the lifting transmission principle of an elevator, and has the advantages of stable transmission, high positioning accuracy, and small running noise, which can meet the high-precision lifting control requirements of the bearing mechanism 3.

[0032] The second lifting assembly 22 is specifically configured as a hydraulic support rod, and the number of the second lifting assemblies 22 is two, which are arranged on both sides of the first lifting assembly. The fixed end of the hydraulic support rod is hinged to the rack 1, and the telescopic end is fixedly connected with the bearing mounting seat of the first lifting assembly or the bearing seat of the driven synchronous pulley, and the hydraulic control unit of the hydraulic support rod is electrically connected with the controller, and the telescopic action thereof is adjusted by the controller. The hydraulic support rod has the characteristics of large output thrust, strong carrying capacity, and stable operation, and can reliably support the first lifting assembly and the bearing mechanism 3, and also assist in realizing large-stroke lifting adjustment. When it is necessary to increase the lifting stroke of the bearing mechanism 3, the controller first controls the hydraulic support rod to extend, driving the first lifting assembly to move upward relative to the rack 1 to a preset height and be locked; then the servo motor of the first lifting assembly is started, driving the bearing mechanism 3 to further lift within the stroke range of the first lifting assembly through the synchronous belt transmission. Through the cooperation of the hydraulic support rod and the belt transmission structure, the overall lifting stroke of the bearing mechanism 3 is effectively expanded, which can adapt to the requirements of different drop test heights. When it is necessary to lower the bearing mechanism 3, the controller first controls the first lifting assembly to drive the bearing mechanism 3 to fall back to the initial position, and then controls the hydraulic support rod to contract, driving the first lifting assembly to fall back to the low position of the rack 1, thereby completing the lifting reset.

[0033] Through the structural design of the above-mentioned embodiment, the belt drive structure of the first lifting assembly is responsible for realizing the precise displacement adjustment of the bearing mechanism 3, and the hydraulic support rod of the second lifting assembly 22 is responsible for realizing the large-stroke expansion and stable support. The cooperative action of the two not only guarantees the precision and stability of the lifting of the bearing mechanism 3, but also meets the stroke requirements in different test scenarios. At the same time, the automatic control of the controller further improves the operation convenience and operation reliability of the lifting mechanism 2, and ensures that the bearing mechanism 3 does not deviate during the overturning process. When the bearing mechanism 3 reaches the set height, the lifting mechanism 2 can accurately fix the height to ensure that the test sample will not be disturbed during the free falling process. This function not only improves the stability of the test, but also guarantees the height consistency of each test, ensuring the reliability of the experimental results. In this embodiment, the predetermined falling height exceeds two meters.

[0034] The bearing 31 is provided with a docking piece 34, and the lifting mechanism 2 comprises a connecting piece (not shown) matched with the docking piece. The docking piece and the connecting piece cooperate to realize the connection of the lifting mechanism 2 and the bearing mechanism 3. During lifting, the connecting piece cooperates with the docking piece 34, so that the lifting mechanism 2 can stably drive the bearing 31 to lift. The docking piece 34 is a cross bar fixedly assembled on the side of the bearing 31 in FIG. 2, and the connecting piece is correspondingly provided as a hook. The opening shape of the hook is matched with the cross-sectional profile of the cross bar. Through the clamping cooperation of the hook and the cross bar, the quick docking and fixing of the lifting mechanism 2 and the bearing mechanism 3 are completed. This connection mode has the advantages of convenient assembly and stable force transmission, can effectively disperse the stress in the lifting process, and improves the lifting stability of the bearing mechanism 3. It should be noted that the docking piece 34 can be a threaded rod of the above-mentioned adjusting movable piece 322 to clamp test samples of different widths.

[0035] In the prior art, the test sample such as a battery pack or an energy storage battery module has a mounting point for fixation, and the mounting point is generally at the bottom of the battery pack or the energy storage battery module, which is more conducive to the connection of the test sample and the lifting mechanism 2. However, when the lifting mechanism 2 drives the test sample to the predetermined falling height, the test sample changes from horizontal placement to vertical placement, and the test sample will be inclined forward. At this time, the angle of the test sample needs to be adjusted multiple times to ensure that the sample is vertically downward when falling. In this embodiment, the test sample is placed on the bearing 31 and fixed by the clamping device 32, and the vertical angle of the sample when falling can be automatically adjusted. In addition, the steel wire is used to connect the lifting mechanism 2 and the test sample in the prior art, and the steel wire is a consumable. The release device 33 can release the test sample, which can be reused and reduces the cost.

[0036] The test samples that can be tested by the platform of the embodiment include electric vehicle battery packs, energy storage battery modules, electric bicycle batteries, photovoltaic modules, charging piles, etc. These samples represent common product types in the new energy industry, and each sample has different material, structure, and performance requirements, and needs to be evaluated for its anti-drop ability and safety in actual application through drop test. Different sizes and shapes of test samples can be stably clamped by the clamping device 32. When the test sample is brought to the preset drop position, the controller receives the remote release instruction and controls the release device 33 to release the test sample. The test sample falls from the drop position and the experiment is completed. Moreover, the platform of the embodiment can test the drop test of large power battery packs and energy storage modules. The size of the large power battery pack is , and the weight is 2T. The size of the energy storage module is , and the weight is 2T.

[0037] The test sample is an energy storage battery module containing multiple groups of spaced apart cell groups. Optionally, it can be composed of 4 groups of cell groups, each including 26 cells, and there is about 5 cm gap between each group to meet the requirements of installation, connection line, heat dissipation, and safety distance, etc. Normally, the energy storage battery module is placed horizontally on the card board for storage, but during the drop test, the energy storage battery module needs to be changed from a horizontal state to a vertical state. During this transition, due to the gap between the four cell groups, the center of gravity is no longer concentrated, which may cause the gap between the cell groups to expand, and even cause the cell groups to spread apart. If not controlled properly, the instability of the energy storage battery module during the drop process may cause the energy storage battery module to deform, thereby affecting the overall performance and safety. The platform of the embodiment designs a bearing 31, places the energy storage battery module on the bearing 31, fixes it by the clamping device 32, and then converts the bearing 31 from a horizontal state to a vertical state. During this process, due to the bearing mechanism 3, the four groups of cells in the energy storage battery module will not be affected by the dispersion force, ensuring the performance of the energy storage battery module and ensuring the feasibility and safety of the test of special structure samples.

[0038] The fire prevention mechanism is used to handle the test sample after dropping to ensure that measures can be taken in time in case of fire or other safety hazards. The fire prevention mechanism includes high-pressure water gun spraying devices, carbon dioxide spraying devices, sand spraying devices, and other fire extinguishing equipment.

[0039] Due to the particularity of the drop test, the test sample has a very high probability of losing control after dropping. When the test sample suddenly rises in temperature, smokes, catches fire, explodes, or instantaneously decomposes, the platform can control its own high-pressure water gun or carbon dioxide to achieve fire suppression, temperature reduction, and other abilities to suppress the test sample from continuing to lose control. The device uses an open design to solve the problem of damage to the device itself caused by high-energy explosions during the test process.

[0040] The high-pressure water gun spraying device is suitable for temperature reduction when the test sample loses control, effectively suppressing the expansion of the test sample. The carbon dioxide spraying device can effectively suppress the burning of the sample, causing harmful substances such as hydrogen fluoride, carbon monoxide, and other toxic gases to spread into the air. The sand spraying device is to prevent the electrolyte in the battery from flowing out during the loss of control, as the electrolyte is flammable, so as to prevent the spread of open flames. Through the coordinated work of these devices, the fire prevention and control mechanism can effectively ensure the safety of the experiment process.

[0041] The video recording mechanism includes multiple cameras for recording the drop process of the test sample in all directions. Each camera is placed in a different position to ensure that every detail of the test sample is captured from various angles. The camera can adjust the angle through a pan-tilt or manually to ensure effective recording of the complete test process. In this embodiment, four cameras are provided, and the four cameras are distributed around the rack 1 to record from four angles to ensure the complete process of the drop of the test sample.

[0042] Before starting the drop test, the operator starts all the cameras, and after the drop test is completed, the operator can stop all the cameras to ensure that the cameras record the entire drop test process.

[0043] The video recording mechanism also includes a video recording host, and the multiple cameras are connected to the video recording host through wired or wireless communication to transmit the recorded video signals to the host in real time for storage. Such video recording not only provides complete visual data for subsequent drop test analysis, but also provides key evidence for safety evaluation in the event of an abnormality.

[0044] The controller is configured to accept a remote release instruction to control the release device 33 to release the test sample, and to accept a remote fire control start instruction to control the fire control mechanism to start. By using remote control release mechanism and integrated fire control system, the personnel and the dangerous environment are completely isolated during the test process, effectively avoiding the personal safety threat to the operator caused by sample fire and explosion in traditional tests, and solving the safety hazard problem of high-energy battery drop test.

[0045] The controller comprises a local control unit and a remote control unit; the local control unit is used for accepting a local clamping instruction to control the clamping device 32 to clamp the test sample and accepting a local lifting instruction to control the lifting of the lifting mechanism 2. Through the local control unit, the operator can directly control the key actions in the test process at the test site. The remote control unit is used for receiving a remote release instruction and a remote fire starting instruction, so as to realize the function of remotely operating the clamping device 32 to release the sample or start the fire control system. The design of the remote control unit enables the operator to monitor and control the operation of the platform from a safe distance, improves the flexibility and safety of the operation, and effectively avoids the personal safety of the test personnel when the test sample is out of control.

[0046] The application also provides a test method of the new energy product drop test platform. The test sample is horizontally placed on the bearing member of the bearing mechanism, and the movable member of the clamping device is driven to move the clamping member to clamp and fix the test sample; The lifting mechanism drives the bearing mechanism and the test sample thereon to overturn from a horizontal posture to a vertical posture and to rise to a preset drop height; The release instruction is sent to the controller through a remote control mode; The controller controls the release device to release the test sample according to the release instruction, so that the test sample freely falls, and the video recording mechanism records the drop process of the test sample; When the test sample falls out of control, the fire control mechanism is started through a remote control mode.

[0047] In summary, by adopting the remote control release mechanism and the integrated fire control system, the complete isolation of the test personnel from the dangerous environment is realized, the personal safety threat to the operator caused by the sample fire and explosion in the traditional test is effectively avoided, and the safety hidden danger problem of the high-energy battery drop test is solved; through the adjustable clamping device and the modular bearing design, a single device can adapt to the test of new energy products of various specifications, and the equipment utilization rate and economy are significantly improved; for the technical problem that the large modular energy storage products are easy to scatter during the test process, the unique bearing mechanism design provides overall support for the groups of cells arranged apart, and ensures the feasibility and safety of the test of special structure samples.

[0048] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0049] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A new energy product drop experiment test platform, characterized in that, The device comprises: a rack; a carrying mechanism comprising a carrier for carrying a test sample, a clamping device arranged on the carrier for clamping the test sample placed on the carrier, and a releasing device arranged on the carrier for releasing the test sample from the carrying mechanism; a lifting mechanism arranged on the rack and connected with the carrying mechanism, for turning the carrying mechanism from a horizontal posture to a vertical posture and lifting the carrying mechanism to a preset drop height; a video recording mechanism comprising a plurality of cameras for recording the drop process of the test sample; a fire control mechanism for processing the test sample after dropping; a controller electrically connected with the clamping device, the releasing device, the lifting mechanism and the fire control mechanism respectively; wherein the clamping device comprises at least one clamping piece and a movable piece connecting the clamping piece and the carrier, and the clamping piece is driven to move by the movable piece to clamp the test sample; the controller is configured to accept a remote release instruction to control the releasing device to release the test sample, and accept a remote fire starting instruction to control the fire control mechanism to start.

2. The new energy product drop experiment test platform according to claim 1, characterized in that, The movable piece comprises a hydraulic rod or a pneumatic rod.

3. The new energy product drop experiment test platform according to claim 1, characterized in that, The lifting mechanism comprises a first lifting assembly comprising a driving part and a lifting part connected with the driving part, the carrying mechanism is connected with the lifting part, and the driving part drives the lifting part to move the carrying mechanism up and down relative to the rack.

4. The new energy product drop experiment test platform according to claim 3, characterized in that, The lifting mechanism further comprises a second lifting assembly connected with the first lifting assembly, and the second lifting assembly drives the first lifting assembly to move up and down relative to the rack.

5. The new energy product drop experiment test platform according to claim 1, characterized in that, The releasing device comprises a releasing plate detachably connected with the carrier, and at least one switch piece arranged between the carrier and the releasing plate, and the switch piece is electrically connected with the controller; when the carrying mechanism is in a vertical posture, the releasing plate is located below the test sample, and the controller is configured to accept a remote release instruction to control the switch piece to separate the releasing plate and the carrier, and the test sample is released from the carrying mechanism.

6. The new energy product drop experiment test platform according to claim 1, characterized in that, The video recording mechanism further comprises a video recording host, and the plurality of cameras are communicatively connected with the video recording host for transmitting the recorded video signal to the video recording host for storage.

7. The new energy product drop experiment test platform according to claim 1, characterized in that, The controller comprises a local control unit and a remote control unit; the local control unit is used to accept a local clamping instruction to control the clamping device to clamp the test sample, and accept a local lifting instruction to control the lifting mechanism to lift; and the remote control unit is used to receive the remote release instruction and the remote fire starting instruction.

8. The new energy product drop experiment test platform according to claim 1, characterized in that, The test sample comprises any one of an electric vehicle battery pack, an electric bicycle battery, a photovoltaic assembly, a charging pile, and an energy storage battery module having a plurality of groups of electric core groups arranged apart from each other.

9. The new energy product drop experiment test platform according to claim 1, characterized in that, The carrier is provided with a docking piece, the lifting mechanism comprises a connecting piece matched with the docking piece, and the docking piece and the connecting piece are matched to realize the connection between the lifting mechanism and the carrying mechanism.

10. A test method based on the new energy product drop experiment test platform according to any one of claims 1-9, characterized in that, The device comprises the following steps: The test sample is horizontally placed on the carrier of the carrier mechanism, and the movable part of the clamping device is driven to move the clamping part to clamp and fix the test sample; The lifting mechanism is driven to overturn the carrier mechanism and the test sample thereon from the horizontal posture to the vertical posture and to rise to a preset drop height; The release instruction is sent to the controller in a remote control mode; The controller controls the release device to release the test sample according to the release instruction, so that the test sample freely falls, and the video recording mechanism records the falling process of the test sample; When the test sample loses control after falling, the fire control mechanism is started in a remote control mode.

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