Testing device and testing system for battery device

Abstract

The embodiment of the utility model provides a testing device and a testing system for a battery device, which can improve the testing efficiency of the battery device. The testing device comprises a placing platform used for placing a battery device, and the battery device comprises a top wall; the battery device is positioned between the placement platform and the first plate; the adjusting assembly is connected with the first plate and used for adjusting the shape of the first plate based on the shape of the top wall.

Description

Technical Field

[0001] This application relates to the field of testing technology, and in particular to a testing apparatus and testing system for a battery device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. In this context, electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the automotive industry's sustainable development. And for electric vehicles, battery technology is a crucial factor in their development.

[0003] However, under extreme conditions such as high temperature, overcharging, and over-discharging, battery devices may experience thermal runaway, leading to short circuits, fires, or even explosions, posing a significant threat to electric vehicles. Therefore, conducting thermal runaway tests on battery devices is a crucial step in ensuring their performance. Utility Model Content

[0004] This application provides a testing apparatus and system for battery devices, which can improve the testing efficiency of battery devices.

[0005] In a first aspect, a testing apparatus for a battery device is provided, comprising: a placement platform for placing a battery device, the battery device including a top wall; a first plate, the battery device being located between the placement platform and the first plate; and an adjustment assembly connected to the first plate for adjusting the shape of the first plate based on the shape of the top wall.

[0006] In this embodiment of the application, the adjustment component in the testing device adjusts the shape of the first plate based on the shape of the bottom wall, that is, the shape of the first plate is adjustable. Thus, regardless of the shape of the top wall of the battery device, the testing device can be used to test the battery device. In other words, the testing device of this embodiment of the application can be adapted to battery devices with different shapes. A large number of battery devices can be tested with one testing device, which not only reduces the testing cost, but also enables fast testing and effectively improves the testing efficiency.

[0007] In some possible implementations, the adjustment component is also used to adjust the distance between the first plate and the top wall along the height direction to a target distance.

[0008] In this technical solution, the adjustment component also adjusts the distance between the first plate and the top wall to the target distance. That is, in the process of testing the battery device, the first plate is adjusted twice. In this way, on the one hand, the test environment can be made as close as possible to the actual use environment, so that the test results can be better applied to the actual use conditions of the battery device; on the other hand, the accuracy of the test can be effectively improved.

[0009] In some possible implementations, the adjustment component is used to adjust the first plate to contact the top wall so that the shape of the first plate is the same as the shape of the top wall.

[0010] This technical solution adjusts the first plate to contact the top wall, so that the final shape of the first plate can fit the shape of the top wall to the greatest extent, thus enabling the testing device to better test the battery device.

[0011] In some possible implementations, the testing apparatus further includes a guide connected to the first plate and the adjustment assembly, the adjustment assembly adjusting the guide in the vertical direction based on the shape of the top wall to adjust the shape of the first plate.

[0012] This technical solution, by setting a guide member connected to the first plate, allows the adjustment component to better control the first plate during the process of adjusting the shape of the first plate, thereby effectively improving the adjustment efficiency.

[0013] In some possible implementations, the first plate includes a plurality of sub-plates, the number of guides being the same as the number of the plurality of sub-plates, and the adjustment assembly adjusting each of the guides to adjust the corresponding sub-plate so that the shape formed by the plurality of sub-plates is the same as the shape of the top wall.

[0014] This technical solution sets the number of guide components to be the same as the number of sub-plates, that is, one guide component corresponds to one sub-plate, and the guide components and sub-plates correspond one-to-one. In this way, the adjustment component can adjust multiple sub-plates more precisely, so that the final shape formed by multiple sub-plates can be as similar as possible to the shape of the top wall, thereby improving the accuracy of the test.

[0015] In some possible implementations, the guide members are disposed at both ends of the first plate along the length direction, wherein a first dimension is smaller than a second dimension, the first dimension being the size of the first plate in the length direction and the second dimension being the size of the first plate in the width direction.

[0016] This technical solution involves setting guides at both ends of the longer part of the first plate, which reduces the probability that the first plate cannot be adjusted precisely according to the instructions of the adjustment component during the adjustment process, thereby improving the adjustment accuracy.

[0017] In some possible implementations, the testing apparatus further includes a telescopic drive connected to the guide, the telescopic drive being used to lock the first plate after the adjustment assembly has adjusted the shape of the first plate to the target shape.

[0018] In this way, the first plate can maintain the target shape, reducing the possibility that the shape of the first plate may change during the test.

[0019] In some possible implementations, the testing apparatus further includes: a first pressure plate; a second pressure plate, located at the other end of the first pressure plate away from the first plate; the guide member is disposed between the first pressure plate and the second pressure plate; wherein the telescopic drive member is connected to the first pressure plate and the second pressure plate respectively, and the telescopic drive member is configured to lock the first plate by squeezing the first pressure plate and the second pressure plate after the adjusting assembly adjusts the shape of the first plate to the target shape.

[0020] This technical solution involves setting a first pressure plate and a second pressure plate connected to the telescopic drive component, with a guide component positioned between the first and second pressure plates. After the adjustment component adjusts the shape of the first plate to the target shape, the telescopic drive component achieves the purpose of locking the first plate by squeezing the first and second pressure plates. This not only makes the process simple but also helps to improve the success rate of locking.

[0021] In some possible implementations, the testing device further includes: a frame comprising a plurality of sub-frames that enclose the frame, at least a portion of the plurality of sub-frames including the first pressure plate and the second pressure plate, and the adjustment assembly being connected to the guide member through the frame.

[0022] This technical solution, by setting up a frame including a first pressure plate and a second pressure plate, and connecting the adjustment component to the guide through the frame, improves the firmness of the connection between the adjustment component and the guide, and facilitates the setting of the first pressure plate and the second pressure plate.

[0023] In some possible implementations, the adjustment assembly includes: a fixing member fixedly connected to the first plate; and a transmission device connected to the fixing member and the first plate, the transmission device being configured to drive the first plate to move along the height direction during transmission to adjust the shape of the first plate based on the shape of the top wall.

[0024] In this technical solution, the adjustment component includes a fixing member and a transmission device. The transmission device is connected to the fixing member and the first plate. Since the fixing member is fixed to the first plate, the first plate can move more smoothly with the movement of the transmission device during the adjustment of the shape of the first plate based on the shape of the top wall. In addition, the transmission device facilitates the movement of the adjustment component in the height direction, making the adjustment of the shape of the first plate by the adjustment component smoother.

[0025] In some possible implementations, the transmission device includes: a drive shaft; a speed-changing transmission mechanism disposed on the drive shaft; and a worm gear transmission mechanism connected to the fixed member and the drive shaft; wherein, the speed-changing transmission mechanism is used to drive the worm gear transmission mechanism to move along the height direction via the drive shaft after receiving power.

[0026] The technical solution includes a transmission device comprising a transmission shaft, a speed-changing transmission mechanism, and a worm gear transmission mechanism, which work together to improve the efficiency and reliability of power transmission, thereby enabling the transmission device to better achieve vertical movement in the height direction.

[0027] In some possible implementations, the drive shaft includes a first drive shaft arranged along a first direction and a second drive shaft arranged along a second direction, the first direction being perpendicular to the second direction. The speed-changing transmission mechanism is disposed on the first drive shaft. The transmission device further includes a power direction conversion mechanism connected to the first drive shaft and the second drive shaft respectively. The power direction conversion mechanism is used to convert the power output by the speed-changing transmission mechanism to the second drive shaft during the rotation of the speed-changing transmission mechanism, so that the worm gear transmission mechanism connected to the second drive shaft moves along the height direction.

[0028] The above technical solution, when the speed transmission mechanism is only set on part of the transmission shaft, allows the worm gear transmission mechanism on the transmission shaft without the speed transmission mechanism to move along the height direction during the rotation of the speed transmission mechanism. This is beneficial for the first plate to move as a whole with the speed transmission mechanism, and improves the efficiency of the adjustment component in adjusting the shape of the first plate.

[0029] In some possible implementations, the transmission device further includes a guide mechanism disposed on the transmission shaft for suppressing deformation of the transmission shaft during the movement of the transmission device.

[0030] This technical solution, by setting a guide mechanism on the transmission shaft, can effectively suppress the deformation of the transmission shaft during the movement of the transmission device, thereby improving the test accuracy.

[0031] In some possible implementations, the testing device further includes: multiple supports connected to the adjustment assembly, each of the multiple supports including two beams, one end of which intersects and the other end of which is placed on the ground; a connecting beam is provided between the multiple supports for connecting them. This improves the stability and support capacity of the testing device.

[0032] In some possible implementations, the testing apparatus further includes: a submerged platform, the placement platform being disposed on the submerged platform, and the other ends of the two beams spanning across the submerged platform.

[0033] This technical solution also includes a submerged platform in the testing device, which can effectively reduce the adverse effects caused by thermal runaway of the battery device after the test is completed.

[0034] In a second aspect, a testing system is provided, comprising: a battery device and a testing apparatus for the battery device as described in the first aspect or its various implementations, the testing apparatus being used to test the battery device. Attached Figure Description

[0035] Figure 1 A schematic diagram of a vehicle according to an embodiment of this application is shown.

[0036] Figure 2 A schematic diagram of the structure of a battery device according to an embodiment of this application is shown.

[0037] Figure 3 A schematic diagram of a test apparatus for a battery device according to an embodiment of this application is shown.

[0038] Figure 4 A schematic diagram of a test apparatus for a portion of the battery device according to an embodiment of this application is shown.

[0039] Figure 5 A schematic diagram of a test apparatus for a portion of the battery device according to an embodiment of this application is shown.

[0040] Figure 6 A schematic diagram of a test apparatus for another battery device according to an embodiment of this application is shown.

[0041] Figure 7 A schematic diagram of a test apparatus for another battery device according to an embodiment of this application is shown.

[0042] Figure 8 A schematic diagram of a test apparatus for another battery device according to an embodiment of this application is shown.

[0043] Figure 9 A schematic diagram of a test apparatus for another battery device according to an embodiment of this application is shown.

[0044] Figure 10 A schematic diagram of a test apparatus for a specific battery device according to an embodiment of this application is shown. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, rather than to describe a specific order or hierarchy.

[0047] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0049] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0050] Battery devices can serve as the primary power source for electrical devices such as electric vehicles, ships, or spacecraft. The battery device mentioned in this application refers to a single physical module comprising one or more individual battery cells to provide higher voltage and capacity. For example, the battery device mentioned in this application may include a battery module, a battery pack, or a battery, etc.

[0051] However, under extreme conditions such as high temperature, overcharging, and over-discharging, battery devices may experience thermal runaway, leading to short circuits, fires, or even explosions, posing a significant threat to electric vehicles. Therefore, conducting thermal runaway tests on battery devices is a crucial step in ensuring their performance.

[0052] Conducting thermal runaway testing on battery devices serves several purposes. First, it assesses the device's safe operation under extreme conditions, reducing the risk of accidents such as fires or explosions. Second, the test increases the likelihood of the battery device meeting international and regional safety standards. Third, the test results reveal the battery device's behavior under extreme conditions such as high temperatures or overcharging, allowing for improvements in battery design, materials, and battery management systems to enhance performance. Finally, the test increases consumer confidence in the performance of electric vehicles.

[0053] When testing battery devices, they need to be placed on a testing apparatus. This apparatus typically has a cover plate that fits over the battery device. Since the top walls of different battery devices may vary, currently, a specific testing apparatus might be designed for each individual battery device to ensure the cover plate fits snugly. This testing method not only significantly increases testing costs but also results in low testing efficiency.

[0054] In view of this, embodiments of this application provide a testing apparatus for a battery device. The testing apparatus includes a placement platform, a first plate, and an adjustment component. The placement platform is used to place the battery device, which includes a top wall. The battery device is located between the placement platform and the first plate. The adjustment component is connected to the first plate and is used to adjust the shape of the first plate based on the shape of the top wall. The adjustment component in this testing apparatus can adjust the shape of the first plate based on the shape of the bottom wall; that is, the shape of the first plate is adjustable. Thus, regardless of the shape of the top wall of the battery device, the testing apparatus can be used to test the battery device. In other words, the testing apparatus of this application embodiment can adapt to battery devices of different shapes, allowing for the testing of multiple battery devices with a single apparatus. This not only reduces testing costs but also enables rapid testing, effectively improving testing efficiency.

[0055] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery devices.

[0056] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical devices.

[0057] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device.

[0058] For example, such as Figure 1 The diagram shown is a structural schematic of a vehicle 1 according to one embodiment of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A motor 40, a controller 30, and a battery device 10 can be installed inside vehicle 1. The controller 30 controls the battery device 10 to supply power to the motor 40. For example, the battery device 10 can be installed at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1. For example, the battery device 10 can serve as the operating power source for vehicle 1, for example, to meet the electrical system requirements of vehicle 1, such as for starting, navigation, and operation. In another embodiment of this application, the battery device 10 can not only serve as the operating power source for vehicle 1, but also as the driving power source for vehicle 1, replacing or partially replacing gasoline or natural gas to provide driving power for vehicle 1.

[0059] For example, such as Figure 2 The diagram shown is a structural schematic of a battery device 10 according to an embodiment of this application. The battery device 10 may include multiple battery cells 20. In addition to the battery cells 20, the battery device 10 may also include a housing, the interior of which is a hollow structure, and the multiple battery cells 20 can be accommodated within the housing. Figure 2 As shown, the housing may include two parts, referred to herein as a first housing part 111 and a second housing part 112, which are fastened together. The shapes of the first housing part 111 and the second housing part 112 may be determined according to the shape of the combination of multiple battery cells 20, and at least one of the first housing part 111 and the second housing part 112 has an opening. For example, as Figure 2As shown, only one of the first housing portion 111 and the second housing portion 112 is a hollow cuboid with an opening, while the other is plate-shaped to cover the opening. Taking the second housing portion 112 as a hollow cuboid with only one open side and the first housing portion 111 as a plate-shaped example, the first housing portion 111 covers the opening of the second housing portion 112 to form a housing with a closed chamber. This chamber can accommodate multiple battery cells 20. The multiple battery cells 20 are connected in parallel, series, or mixed configurations and placed within the housing formed by the snap-fit ​​of the first housing portion 111 and the second housing portion 112.

[0060] For example, unlike Figure 2 As shown, both the first housing portion 111 and the second housing portion 112 can be hollow cuboids with only one open side each. The openings of the first housing portion 111 and the second housing portion 112 are opposite to each other, and the first housing portion 111 and the second housing portion 112 are interlocked to form a housing with a closed cavity. Multiple battery cells 20 are connected in parallel, series, or mixed and placed inside the housing formed by the interlocking of the first housing portion 111 and the second housing portion 112.

[0061] In some embodiments, the battery device 10 may also include other structures, which will not be described in detail here.

[0062] In this embodiment of the application, the battery cell 20 can be a secondary battery, which refers to a battery cell that can be used again after being discharged by recharging to activate the active materials.

[0063] The battery cell 20 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this application embodiment is not limited to this. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes, and this application embodiment is not limited to this. The battery cell 20 is generally divided into three types according to the packaging method: cylindrical battery cell, cuboid / square battery cell, and pouch battery cell, and this application embodiment is not limited to this.

[0064] The battery cell 20 may include an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell 20 primarily operates by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The current collector without the positive active material layer protrudes from the current collector with the positive active material layer, and serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The current collector without the negative active material layer protrudes from the current collector with the negative active material layer, and serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be graphite, carbon, or silicon, etc. To ensure that a large current can be carried without melting, multiple positive electrode tabs are stacked together, and multiple negative electrode tabs are stacked together. The diaphragm can be made of PP or PE, etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0065] Figure 3 A schematic diagram of a testing apparatus for a battery device according to an embodiment of this application is shown. This testing apparatus can be used, for example, for thermal runaway testing or for airtightness testing of the battery device.

[0066] like Figure 3 As shown, the testing device 300 may include a placement platform 310, a first plate 320, and an adjustment assembly 330. The placement platform 310 is used to place the battery device 10, which includes a top wall 101 and is located between the placement platform 310 and the first plate 320. The adjustment assembly 330 is connected to the first plate 320 and is used to adjust the shape of the first plate 320 based on the shape of the top wall 101.

[0067] In this embodiment of the application, the adjustment component 330 in the testing device 300 adjusts the shape of the first plate 320 based on the shape of the bottom wall. That is, the shape of the first plate 320 is adjustable. Thus, regardless of the shape of the top wall 101 of the battery device 10, the testing device 300 can be used to test the battery device 10. In other words, the testing device 300 of this embodiment of the application can be adapted to battery devices 10 with different shapes. A large number of battery devices 10 can be tested by one testing device 300, which improves the applicability of the testing device 300, reduces testing costs, enables rapid testing, and effectively improves testing efficiency.

[0068] The top wall 101 is a wall perpendicular to the height direction of the battery device 10, and when the battery device 10 is in a test state, the top wall 101 is located above the battery device 10. It should be noted that in this embodiment, "upper" means a direction opposite to the direction of gravity, and "lower" means a direction in the same direction as the direction of gravity.

[0069] The first board 320 can be a single, integral structure or composed of multiple structures. For example, as... Figure 4 As shown, the first plate 320 may include a plurality of sub-plates 321, which are arranged to form the first plate 320. For example, the plurality of sub-plates 321 may include a plurality of square tubes.

[0070] In some embodiments, the adjustment component 330 can adjust the first plate 320 to contact the top wall 101 so that the shape of the first plate 320 is the same as the shape of the top wall 101.

[0071] In this technical solution, the first plate 320 is adjusted to contact the top wall 101, so that the final shape of the first plate 320 can fit the shape of the top wall 101 to the greatest extent, thereby enabling the test device 300 to better test the battery device 10.

[0072] During the process of adjusting the first plate 320 to contact the top wall 101, the adjustment component 330 can adjust the first plate 320 in both the height and horizontal directions. The height direction is parallel to the direction of gravity, and the horizontal direction is perpendicular to the height direction.

[0073] For example, the adjustment component 330 can first adjust the first plate 320 horizontally, and then adjust the first plate 320 vertically so that the first plate 320 contacts the top wall 101. Typically, after the battery device 10 is placed on the placement platform 310, the first plate 320 is located above the battery device 10. Therefore, adjusting the first plate 320 vertically can specifically include adjusting the first plate 320 downwards, such as allowing the first plate 320 to fall freely.

[0074] Alternatively, the adjusting component 330 can first adjust the first plate 320 in the vertical direction so that the first plate 320 contacts the top wall 101, and then the adjusting component 330 can adjust the first plate 320 in the horizontal direction.

[0075] Alternatively, when the user places the battery device 10 on the placement platform 310, the battery device 10 can be positioned horizontally aligned with the first plate 320. This allows the adjustment assembly 330 to adjust the shape of the first plate 320 only in the height direction. This improves the efficiency of adjusting the shape of the first plate 320, thereby increasing the testing efficiency of the battery device 10.

[0076] The adjustment component 330 can be directly connected to the first plate 320 to directly adjust the first plate 320.

[0077] Or, such as Figure 4 As shown, the testing device 300 may further include: a guide 340 connected to the first plate 320 and the adjustment assembly 330, wherein the adjustment assembly 330 adjusts the guide 340 in the vertical direction based on the shape of the top wall 101 to adjust the shape of the first plate 320.

[0078] This technical solution, by setting a guide member 340 connected to the first plate 320, allows the adjustment component 330 to better control the first plate 320 during the process of adjusting the shape of the first plate 320, thereby effectively improving the adjustment efficiency.

[0079] The guide member 340 can be attached to the surface of the first plate 320. Or, as... Figure 4 As shown, the guide member 340 can penetrate through the first plate 320 to connect with the first plate 320, thereby enhancing the robustness of the connection between the guide member 340 and the first plate 320. Alternatively, the first plate 320 may include a groove, in which a portion of the guide member 340 is accommodated.

[0080] The guide member 340 can be connected to the first plate 320 by welding, or the guide member 340 can be connected to the first plate 320 by a connector, or the guide member 340 can be connected to the first plate 320 by structural adhesive.

[0081] The shape and size of the guide member 340 are not limited in this embodiment. For example, the guide member 340 can be rectangular, cylindrical, or irregular in shape. The length of the guide member 340 only needs to be sufficient to connect the first plate 320 and the adjustment assembly 330 simultaneously.

[0082] The number of guide elements 340 may include one.

[0083] Alternatively, the number of guide members 340 may also include multiple ones. For example, such as Figure 4As shown, when the first plate 320 includes multiple sub-plates 321, the number of guide members 340 can be the same as the number of multiple sub-plates 321. In this case, the adjustment assembly 330 adjusts each guide member 340 to the corresponding sub-plate 321, ultimately making the shape formed by the multiple sub-plates 321 the same as the shape of the top wall 101.

[0084] This technical solution sets the number of guide members 340 to be the same as the number of multiple sub-plates 321, that is, one guide member 340 corresponds to one sub-plate 321, and the guide members 340 and sub-plates 321 correspond one-to-one. In this way, the adjustment component 330 can adjust the multiple sub-plates 321 more precisely, so that the final shape formed by the multiple sub-plates 321 can be as similar as possible to the shape of the top wall 101, thereby improving the accuracy of the test.

[0085] Optionally, guide members 340 can be provided at all four ends of the first plate 320. In other words, while the guide members are connected to both ends of the first plate 320 along the length direction (i.e., the x-direction), the guide members 340 are also connected to both ends of the first plate 320 along the width direction (i.e., the y-direction).

[0086] Optionally, along the width direction, the guide 340 can be disposed at both ends of the first plate 320.

[0087] Optionally, guide members 340 may be disposed at both ends of the first plate 320 along the length direction. The first dimension is smaller than the second dimension, where the first dimension is the size of the first plate 320 in the length direction and the second dimension is the size of the first plate 320 in the width direction.

[0088] This technical solution provides guide members 340 at both ends of the longer first plate 320, which reduces the probability that the first plate 320 cannot be adjusted precisely according to the instructions of the adjustment component 330 during the process of adjusting the shape of the first plate 320, thereby improving the adjustment accuracy.

[0089] Furthermore, in some embodiments, the testing device 300 may also include a telescopic drive 350, which can be directly connected to the first plate 320 and is used to lock the first plate 320 after the adjustment component 330 adjusts the shape of the first plate 320 to the target shape.

[0090] Or, refer to again Figure 4 The telescopic drive component 350 can be connected to the guide component 340 to lock the first plate 320 after the adjustment component 330 adjusts the shape of the first plate 320 to the target shape. In this way, the first plate 320 can maintain the target shape, reducing the possibility that the shape of the first plate 320 may change during the test.

[0091] During the process of adjusting the shape of the first plate 320 by the adjusting component 330, the telescopic drive component 350 is in an open state; after the adjusting component 330 adjusts the shape of the first plate 320 to the target shape, the telescopic drive component 350 is in a clamping state to lock the first plate 320. The target shape is the shape of the top wall 101.

[0092] Optionally, the telescopic drive component 350 may include, but is not limited to, hydraulic rods, hydraulic cylinders, electric actuators, pneumatic cylinders, lead screw and nut mechanisms, etc.

[0093] The embodiments of this application do not limit the number of telescopic drive members 350. For example, if the guide members 340 are provided at both ends of the first plate 320 along the length direction, one telescopic drive member 350 can be provided at each end of the first plate 320. Alternatively, to improve the success rate of locking the first plate 320, multiple telescopic drive members 350 can be provided at each end of the first plate 320. Figure 4 As shown, three telescopic drive components 350 are respectively provided at both ends of the first plate 320.

[0094] The telescopic drive component 350 can be directly connected to the guide component 340.

[0095] Or, such as Figure 5 As shown, the testing device 300 may further include a first pressure plate 361 and a second pressure plate 362. The second pressure plate 362 is located at the other end of the first plate 320, relative to the first pressure plate 361, and a guide member 340 is disposed between the first pressure plate 361 and the second pressure plate 362. A telescopic drive member 350 is connected to the first pressure plate 361 and the second pressure plate 362 and is configured to lock the first plate 320 by pressing the first pressure plate 361 and the second pressure plate 362 after the adjusting assembly 330 adjusts the shape of the first plate 320 to the target shape.

[0096] This technical solution, by setting a first pressure plate 361 and a second pressure plate 362 connected to the telescopic drive member 350, and with the guide member 340 positioned between the first pressure plate 361 and the second pressure plate 362, after the adjusting component 330 adjusts the shape of the first plate 320 to the target shape, the telescopic drive member 350 achieves the purpose of locking the first plate 320 by squeezing the first pressure plate 361 and the second pressure plate 362. This not only makes the process simple but also helps to improve the success rate of locking.

[0097] The first pressure plate 361 and the second pressure plate 362 are hollow structures, and the dimension of the guide member 340 in the height direction is not less than the dimension of the first pressure plate 361 and the second pressure plate 362 in the height direction.

[0098] The telescopic drive member 350 can pass through the second pressure plate 362 and connect to the first pressure plate 361. For example, the telescopic drive member 350 can also pass through the first pressure plate 361, or the telescopic drive member 350 may not pass through the first pressure plate 361.

[0099] The materials and shapes of the first pressure plate 361 and the second pressure plate 362 may be the same as or different from those of the first plate 320. This application embodiment does not specifically limit this.

[0100] Optionally, the relative position between the first pressure plate 361 and the telescopic drive member 350 is fixed, for example, by bolts. The relative position between the second pressure plate 362 and the telescopic drive member 350 can change. During the process of the telescopic drive member 350 locking the first plate 320, the second pressure plate 362 gradually moves away from the telescopic drive member 350 and gradually moves closer to the first pressure plate 361.

[0101] To better connect the guide 340 to the adjustment assembly 330, in some embodiments, reference is made again. Figure 4 The testing device 300 also includes a frame 370, which has multiple sub-frames 371. The multiple sub-frames 371 enclose the frame 370 to form the frame 370. At least some of the multiple sub-frames 371 include a first pressure plate 361 and a second pressure plate 362. The adjustment component 330 is connected to the guide member 340 through the frame 370.

[0102] This technical solution, by setting a frame 370 including a first pressure plate 361 and a second pressure plate 362, and the adjustment component 330 being connected to the guide member 340 through the frame 370, on the one hand, improves the firmness of the connection between the adjustment component 330 and the guide member 340, and on the other hand, facilitates the setting of the first pressure plate 361 and the second pressure plate 362.

[0103] The first pressure plate 361 and the second pressure plate 362 can be disposed within the sub-frame 371, or the first pressure plate 361 and the second pressure plate 362 can form the sub-frame 371.

[0104] The guide member 340 can pass through the sub-frame 371, which is located between the first plate 320 and the adjustment assembly 330.

[0105] When the guide member 340 is disposed at both ends of the first plate 320 along the length direction, at least a portion of the sub-frame 371 is a sub-frame 371 disposed along the width direction. When the guide member 340 is disposed at both ends of the first plate 320 along the width direction, at least a portion of the sub-frame 371 is a sub-frame 371 disposed along the length direction.

[0106] It should be noted that, in the embodiments of this application, the first plate 320, guide member 340, telescopic drive member 350, first pressure plate 361, second pressure plate 362 and frame 370 can be understood as a component of the testing device 300, for example, the component can be called a contouring stand or other names.

[0107] In some embodiments, the adjustment assembly 330 may include a fixing member 331 and a transmission device. The fixing member 331 is fixedly connected to the first plate 320, and the transmission device is connected to the fixing member 331 and the first plate 320. The transmission device is configured to drive the first plate 320 to move along the height direction during transmission so as to adjust the shape of the first plate 320 based on the shape of the top wall 101.

[0108] In this technical solution, the adjustment component 330 includes a fixing member 331 and a transmission device. The transmission device is connected to the fixing member 331 and the first plate 320. Since the fixing member 331 is fixed to the first plate 320, the first plate 320 can move more smoothly with the movement of the transmission device during the process of the adjustment component 330 adjusting the shape of the first plate 320 based on the shape of the top wall 101. In addition, the transmission device facilitates the movement of the adjustment component 330 in the height direction, making the adjustment of the shape of the first plate 320 by the adjustment component 330 smoother.

[0109] The fastener 331 and the first plate 320 can be fixed together by mechanical fixing, welding, bonding, snap-fitting, plugging, etc.

[0110] If the testing device 300 includes a frame 370, then the fastener 331 is fixedly connected to the frame 370. If the testing device 300 does not include a frame 370, then the fastener 331 can be directly fixedly connected to the first plate 320, or fixedly connected to the guide member 340.

[0111] In some embodiments, such as Figure 6 As shown, the transmission device may include a transmission shaft 332, a speed-changing transmission mechanism 333, and a worm gear transmission mechanism 334. The speed-changing transmission mechanism 333 is mounted on the transmission shaft 332, and the worm gear transmission mechanism 334 is connected to the fixed member 331 and the transmission shaft 332. The speed-changing transmission mechanism 333, upon receiving power, drives the worm gear transmission structure to move along the height direction via the transmission shaft 332.

[0112] The transmission device of this technical solution includes a transmission shaft 332, a speed change transmission mechanism 333, and a worm gear transmission mechanism 334. Through their coordinated work, the efficiency and reliability of power transmission can be improved, thereby enabling the transmission device to better achieve vertical movement in the height direction.

[0113] The number of drive shafts 332 can be multiple, such as four, meaning drive shafts 332 are provided in all four directions. Alternatively, to reduce costs or simplify the transmission device, refer to [the relevant documentation]. Figure 7 The number of drive shafts 332 can be three. Two of the three drive shafts 332 are parallel to each other, and the other drive shaft 332 is connected to the two drive shafts 332.

[0114] The speed transmission mechanism 333 may include, but is not limited to, a reduction gearbox, such as a gear reducer or a planetary reducer.

[0115] The transmission mechanism 333 can be mounted on only one drive shaft 332, such as Figure 7 As shown, the speed transmission mechanism 333 is mounted on only one drive shaft 332. Alternatively, it can be mounted on multiple drive shafts 332.

[0116] The worm gear transmission mechanism 334 can be arranged in four directions of the transmission device, for example, it can be arranged at the four corners of the transmission device.

[0117] The worm gear transmission mechanism 334 may include, for example, a worm gear reducer, which may include a worm and a worm, and the worm may be connected to the fixed member 331.

[0118] When the transmission mechanism 333 is a gearbox and the worm gear transmission mechanism includes a worm gear reducer, after the gearbox receives power, it converts the received high-speed, low-torque rotational power into medium-speed, medium-torque rotational power. The medium-speed, medium-torque rotational power output by the gearbox is transmitted to the worm gear reducer through the transmission shaft 332. The worm gear reducer then moves up and down along the height direction, driving the first plate 320 to move.

[0119] In some embodiments, the transmission shaft 332 includes a first transmission shaft arranged along a first direction and a second transmission shaft arranged along a second direction, the first direction being perpendicular to the second direction. A speed-changing transmission mechanism 333 is disposed on the first transmission shaft. The transmission device may further include a power direction conversion mechanism 335. This power direction conversion mechanism 335 is connected to both the first and second transmission shafts and is used to convert the power output by the speed-changing transmission mechanism 333 to the second transmission shaft during rotation, so that the worm gear transmission mechanism 334 connected to the second transmission shaft moves along the height direction.

[0120] In the above technical solution, when the speed transmission mechanism 333 is only set on a portion of the transmission shaft 332, by setting the power direction conversion mechanism 335, the worm gear transmission mechanism 334 on the transmission shaft 332 where the speed transmission mechanism 333 is not set can also move along the height direction during the rotation of the speed transmission mechanism 333. This is beneficial for the first plate 320 to move as a whole with the movement of the speed transmission mechanism 333, and improves the efficiency of the adjustment component 330 in adjusting the shape of the first plate 320.

[0121] Optionally, the power direction conversion mechanism 335 may include, but is not limited to, a right-angle converter, a linkage mechanism, a right-angle gearbox, etc.

[0122] Optionally, the ends of the first drive shaft and the second drive shaft can be connected to the power direction transmission mechanism, respectively. If there are multiple second drive shafts, there can also be multiple power direction conversion mechanisms 335.

[0123] For example, the drive shaft 332 includes one first drive shaft and two second drive shafts, assuming the first drive shaft is drive shaft 1, and the two second drive shafts are drive shaft 2 and drive shaft 3 respectively. The transmission mechanism 333 is mounted on drive shaft 1. There are two power direction conversion mechanisms 335, assuming they are power direction conversion mechanism 1 and power direction conversion mechanism 2. The first end of drive shaft 1 is connected to power direction conversion mechanism 1, and the second end of drive shaft 1 is connected to power direction conversion mechanism 2. Drive shaft 2 is connected to power direction conversion mechanism 1. Thus, during the rotation of the transmission mechanism 333, power direction conversion mechanism 1 can convert the force output by the transmission mechanism 333 to drive shaft 2. Drive shaft 3 is connected to power direction conversion mechanism 2. Thus, during the rotation of the transmission mechanism 333, power direction conversion mechanism 2 can convert the force output by the transmission mechanism 333 to drive shaft 3.

[0124] It should be noted that if a speed change transmission mechanism 333 is also provided on the second rotating shaft, the transmission device may not include the power direction conversion mechanism 335.

[0125] In some cases, the drive shaft 332 may be quite long. In such cases, during testing of the battery device 10, the drive shaft 332 may deform, such as bending downwards. Therefore, as... Figure 7 As shown, the transmission device may further include: a guide mechanism 336, which is disposed on the transmission shaft 332 and is used to suppress the deformation of the transmission shaft 332 during the movement of the transmission device.

[0126] This technical solution, by setting a guide mechanism 336 on the transmission shaft 332, can effectively suppress the deformation of the transmission shaft 332 during the movement of the transmission device, thereby improving the test accuracy.

[0127] Refer again Figure 7 The guide mechanism 336 can be a guide ring. The number of guide rings on each drive shaft 332 can be set randomly, or it can be set based on certain criteria.

[0128] Optionally, each drive shaft 332 may be provided with a guide mechanism 336.

[0129] Considering that the greater the length of the drive shaft 332, the higher the probability of deformation of the drive shaft 332, optionally, if the length of the drive shaft 332 is greater than the length threshold, a guide mechanism 336 can be provided on the drive shaft 332.

[0130] Furthermore, the adjustment assembly 330 may also include a base 337, on which the transmission device is mounted. For example... Figure 8 As shown, the speed transmission mechanism 333, the power direction conversion mechanism 335, and the worm gear transmission mechanism 334 are all mounted on the base 337.

[0131] After the adjustment component 330 has adjusted the shape of the first plate 320 based on the shape of the top wall 101, the adjustment component 330 can also be used to adjust the distance between the first plate 320 and the top wall 101 along the height direction to the target distance.

[0132] In this technical solution, the adjustment component 330 also adjusts the distance between the first plate 320 and the top wall 101 to the target distance. That is, in the process of testing the battery device 10, the first plate 320 will be adjusted twice. In this way, on the one hand, the test environment can be made as close as possible to the actual use environment, so that the test results can be better applied to the actual use conditions of the battery device 10; on the other hand, the accuracy of the test can be effectively improved.

[0133] The target distance can be the distance between the top wall 101 of the battery device 10 and the power-consuming device.

[0134] To improve the stability and support of the testing device 300, in some embodiments, such as Figures 6-8 As shown, the testing device 300 may further include: a plurality of supports 380 connected to the adjustment assembly 330, each of the plurality of supports 380 including two beams 381, one end of the two beams 381 intersecting and the other end set on the ground. In this way, the stability and support of the testing device 300 can be improved.

[0135] The other ends of the two beams 381 can be mounted on the ground, for example, by bolts, welding, or other means. Multiple supports 380 can be connected to the adjustment assembly 330, for example, by connectors, welding, or mechanical means.

[0136] This application does not limit the number of multiple supports 380 in its embodiments. For example, Figures 6-8 The number of supports 380 in the structure is two, or the number of supports 380 can be three or four, etc.

[0137] Optionally, beam 381 may have a certain degree of rigidity to provide sufficient support. For example, beam 381 may be made of metal, or it may be made of plastic, such as PP, PE, polyethylene terephthalate (PET), or other polymeric insulating materials.

[0138] To further increase the stability and support of the multiple supports 380, again as Figures 6-8 As shown, a connecting beam 382 can be provided between multiple supports 380, and the connecting beam 382 is used to connect multiple supports 380.

[0139] The connecting beam 382 between the two supports 380 can be provided as a single beam, or, as shown in the image. Figure 9 As shown, there are multiple settings, such as two.

[0140] In another embodiment, the two beams can be parallel to each other and arranged along the height direction, with one end of the two beams placed on the ground, and a connecting beam 382 can also be provided between the two beams.

[0141] In thermal runaway testing, after the battery device 10 is tested, it is usually necessary to perform cooling operations on the battery device 10 to reduce the adverse effects caused by thermal runaway. Therefore, in some embodiments, the testing device 300 may further include a thermal management component for regulating the temperature of the battery device 10 after the battery device 10 is tested.

[0142] For example, regulating the temperature of the battery device 10 may include cooling the battery.

[0143] As an example, such as Figure 9 As shown, the thermal management component may include a submerged platform 390, a placement platform 310 disposed on the submerged platform 390, and the other ends of two beams 381 spanning the submerged platform 390.

[0144] The technical solution also includes a submerged platform 390 in the test device 300, which can effectively reduce the adverse effects caused by thermal runaway of the battery device 10 after the test of the battery device 10 is completed.

[0145] Refer again Figure 10The shape of the submerged platform 390 can be rectangular, or it can be circular, elliptical, or of course, irregular.

[0146] The submersible platform 390 is movable. After the test is completed, the battery device 10 can come into contact with the cooling medium as the submersible platform 390 moves, thereby cooling the battery device 10 that has experienced thermal runaway. Optionally, the cooling medium can be such as water, a mixture of water and ethylene glycol, or air.

[0147] Refer again Figure 10 This application provides a battery device testing device 300, which includes a submersible platform 390, two opposing supports 380, a placement platform 310, a contouring frame, and an adjustment assembly 330.

[0148] The contouring frame includes a first plate 320, a guide member 340, a telescopic drive member 350, a first pressure plate 361, a second pressure plate 362, and a frame 370. The first plate 320 includes multiple square tubes, the guide member 340 includes a guide shaft, and the telescopic drive member 350 includes a hydraulic cylinder. It should be noted that... Figure 10 The first pressure plate 361 and the second pressure plate 362 are not shown.

[0149] The placement platform 310 is set on the submerged platform 390. Each support 380 includes two beams 381, one end of which intersects and the other end is set on the ground and spans across the submerged platform 390. Two connecting beams 382 are provided between the two supports 380 for connecting the two supports 380.

[0150] The adjustment assembly 330 includes a fixing component 331, three drive shafts 332, a speed transmission mechanism 333, a worm gear transmission mechanism 334, a power direction conversion mechanism 335, and a guide mechanism 336. The fixing component 331 includes a fixing plate; the speed transmission mechanism 333 includes a reduction gearbox; the worm gear transmission mechanism 334 includes a worm gear reducer; the power direction conversion mechanism 335 includes a right-angle converter; and the guide mechanism 336 includes a guide ring. The reduction gearbox is mounted on one of the drive shafts. Rotating the reduction gearbox drives the worm gear reducer to move up and down. The worm gear reducer is connected to the contouring frame via the fixing plate to control the up and down movement of the entire contouring frame.

[0151] During testing, the placement platform 310 is placed on the submersible platform 390, and the battery device 10 is placed on the placement platform 310. The hydraulic cylinder is controlled to be in the open state to allow the square tubes to fall freely. The gearbox rotates to lower the contouring frame until all the square tubes contact the top wall 101 of the battery device 10. Then, the hydraulic cylinder is locked. Next, the gearbox continues to rotate to raise the contouring frame to the target height, and the testing of the battery device 10 begins.

[0152] After the battery device 10 fails, the submersible platform 390 descends to sink the placement platform 310 and the battery device 10 into the water, thereby cooling the battery device 10.

[0153] This application also provides a testing system, which includes a battery device and a testing device for the battery device, the testing device being used to test the battery device.

[0154] Optionally, the testing device can be the battery device testing device 300 described above.

[0155] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A testing device for a battery device, characterized in that, include: A placement platform for placing a battery assembly, the battery assembly including a top wall; The first plate, wherein the battery device is located between the placement platform and the first plate; An adjustment component, connected to the first plate, is used to adjust the shape of the first plate based on the shape of the top wall.

2. The testing apparatus according to claim 1, characterized in that, The adjustment component is also used to adjust the distance between the first plate and the top wall along the height direction to a target distance.

3. The testing apparatus according to claim 1 or 2, characterized in that, The adjustment assembly is used to adjust the first plate to contact the top wall so that the shape of the first plate is the same as the shape of the top wall.

4. The testing apparatus according to claim 1 or 2, characterized in that, The testing apparatus also includes: A guide member, connected to the first plate and the adjustment assembly, the adjustment assembly adjusting the guide member in the vertical direction based on the shape of the top wall to adjust the shape of the first plate.

5. The testing apparatus according to claim 4, characterized in that, The first plate includes multiple sub-plates, and the number of guide members is the same as the number of multiple sub-plates. The adjustment assembly adjusts each of the guide members to adjust the corresponding sub-plate so that the shape formed by the multiple sub-plates is the same as the shape of the top wall.

6. The testing apparatus according to claim 4, characterized in that, Along the length direction, the guide members are disposed at both ends of the first plate, wherein the first dimension is smaller than the second dimension, the first dimension being the dimension of the first plate in the length direction, and the second dimension being the dimension of the first plate in the width direction.

7. The testing apparatus according to claim 4, characterized in that, The testing apparatus also includes: A telescopic drive component, connected to the guide component, is used to lock the first plate after the adjustment assembly adjusts the shape of the first plate to the target shape.

8. The testing apparatus according to claim 7, characterized in that, The testing apparatus also includes: First pressure plate; The second pressure plate is located at the other end of the first pressure plate, away from the first plate, and the guide is disposed between the first pressure plate and the second pressure plate. The telescopic drive member is connected to the first pressure plate and the second pressure plate respectively. The telescopic drive member is configured to lock the first plate by squeezing the first pressure plate and the second pressure plate after the adjustment assembly adjusts the shape of the first plate to the target shape.

9. The testing apparatus according to claim 8, characterized in that, The testing apparatus also includes: The frame includes multiple sub-frames that enclose each other to form the frame. At least some of the multiple sub-frames include a first pressure plate and a second pressure plate. The adjustment assembly is connected to the guide member through the frame.

10. The testing apparatus according to claim 1 or 2, characterized in that, The adjustment component includes: The fastener is fixedly connected to the first plate; A transmission device, connected to the fixing member and the first plate, is configured to drive the first plate to move along the height direction during transmission, so as to adjust the shape of the first plate based on the shape of the top wall.

11. The testing apparatus according to claim 10, characterized in that, The transmission device includes: transmission shaft; A speed-changing transmission mechanism is mounted on the drive shaft; A worm gear transmission mechanism is connected to the fixed component and the transmission shaft; The variable speed transmission mechanism is used to drive the worm gear transmission mechanism to move along the height direction via the transmission shaft after receiving power.

12. The testing apparatus according to claim 11, characterized in that, The drive shaft includes a first drive shaft arranged along a first direction and a second drive shaft arranged along a second direction, the first direction being perpendicular to the second direction. The speed-changing transmission mechanism is disposed on the first drive shaft. The transmission device further includes: A power direction conversion mechanism is connected to the first drive shaft and the second drive shaft respectively. The power direction conversion mechanism is used to convert the power output by the speed transmission mechanism to the second drive shaft during the rotation of the speed transmission mechanism, so that the worm gear transmission mechanism connected to the second drive shaft moves along the height direction.

13. The testing apparatus according to claim 11, characterized in that, The transmission device also includes: A guide mechanism, disposed on the drive shaft, is used to suppress deformation of the drive shaft during the movement of the transmission device.

14. The testing apparatus according to claim 1 or 2, characterized in that, The testing apparatus also includes: Multiple supports are connected to the adjustment assembly. Each of the multiple supports includes two beams, one end of which intersects and the other end of which is placed on the ground. A connecting beam is provided between the multiple supports for connecting the multiple supports.

15. The testing apparatus according to claim 14, characterized in that, The testing apparatus also includes: A submerged platform, wherein the placement platform is set on the submerged platform, and the other ends of the two beams span the submerged platform.

16. A testing system, characterized in that, include: Battery device; The testing apparatus for a battery device as described in any one of claims 1 to 15, wherein the testing apparatus is used to test the battery device.

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