Battery testing device

Abstract

The utility model provides a kind of battery testing device, comprising: extrusion mechanism, including extrusion head and first driving part, the first driving part is used to drive the extrusion head moves along horizontal direction, to provide extrusion force to the battery to be tested located in the front side of the extrusion head;Turnover mechanism, including workbench and second driving part, the workbench is set in the front side below the extrusion head, for the battery to be tested provides placement space, the second driving part is used to drive the workbench drives the battery to be tested synchronous overturning;Locking mechanism is used to fix the battery to be tested, to compact the battery to be tested on the workbench.The utility model can realize the battery to be tested on the same equipment continuous extrusion test and overturning test, real simulation battery in actual accident working condition suffers extrusion after continuing to roll the compound stress state, provides reliable testing means for accurately evaluating the comprehensive safety performance of battery.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a battery testing device. Background Technology

[0002] With the booming development of the new energy industry, lithium-ion batteries, as the core power source for electric vehicles and energy storage systems, have experienced explosive market demand growth. However, battery safety remains a key factor restricting the industry's development. Especially in the electric vehicle sector, in the event of a collision, the power battery pack may suffer severe mechanical damage, leading to thermal runaway, fire, or even explosion, posing a serious threat to the lives and property of drivers and passengers.

[0003] To ensure the safety of lithium-ion batteries, rigorous safety performance tests are required before they are put into use. Among these tests, the crush test and the roll test are two important tests for evaluating the mechanical safety performance of the battery. The crush test mainly simulates the response characteristics of the battery when subjected to external compressive force, assessing the battery's structural strength, degree of deformation, and whether dangerous situations such as internal short circuits and thermal runaway will occur. The roll test mainly assesses the battery's sealing performance, electrolyte leakage risk, and internal structural stability under tumbling conditions.

[0004] In real-world traffic accidents, vehicle collisions are often accompanied by a series of compressions and rollovers. This combined condition poses a far greater threat to battery safety than a single test condition. Currently, compression and rollover tests are typically conducted independently on different testing equipment, failing to realistically simulate the continuous compression and rollover scenarios in accidents. More importantly, batteries that have undergone compression testing may already be in a dangerous critical state, with their internal structures potentially damaged. Transferring these batteries to other rollover testing equipment at this point not only poses significant safety risks but may also alter the battery's damage state during the transfer process, leading to distorted test results and an inability to accurately assess the battery's safety performance in actual accidents.

[0005] In addition, the existing test equipment’s separate design has the following shortcomings: First, the test efficiency is low, requiring the transfer of samples between different devices, which increases the test time and cost; second, it cannot achieve continuous testing by immediately flipping the sample after squeezing, making it difficult to capture the transient response characteristics of the battery under combined stress; and third, manual transfer operations increase the safety risks for test personnel, especially for testing large-capacity power battery packs.

[0006] Therefore, how to more accurately simulate the compression and tumbling conditions of batteries in real accidents and improve the accuracy of battery test results is a problem that needs to be solved. Utility Model Content

[0007] This invention provides a battery testing device to address the shortcomings of existing technologies where compression and tumbling tests for batteries are performed separately using different devices, resulting in insufficient test authenticity and accuracy, and increasing the safety risks for personnel handling batteries. This device enables the battery under test to undergo continuous compression and tumbling tests on the same device, realistically simulating the combined stress state of a battery after being compressed and tumbling under actual accident conditions, thus providing a reliable testing method for accurately evaluating the comprehensive safety performance of batteries.

[0008] This utility model provides a battery testing device, comprising: The extrusion mechanism includes an extrusion head and a first drive member, the first drive member being used to drive the extrusion head to move in a horizontal direction to provide extrusion force to the battery to be tested located in front of the extrusion head; The flipping mechanism includes a worktable and a second drive unit. The worktable is located below the front side of the extrusion head to provide a placement space for the battery to be tested. The second drive unit is used to drive the worktable to rotate the battery to be tested synchronously. A locking mechanism is used to fix the battery under test, so as to press the battery under test firmly onto the worktable.

[0009] According to the present invention, a battery testing device is provided in which a receiving cavity is provided inside the workbench, and a locking mechanism is movably disposed on the workbench. The locking mechanism has a storage position hidden in the receiving cavity and a use position extending out of the receiving cavity to fix the battery to be tested.

[0010] According to the present invention, a battery testing device is provided, wherein the locking mechanism includes a lifting block and a pressure bar, the lifting block has a receiving groove on the side facing the battery to be tested, and the pressure bar is retractably disposed in the receiving groove.

[0011] According to the present invention, a battery testing device is provided, wherein two lifting blocks are provided on opposite sides of the battery to be tested, and two pressure bars are provided, with two pressure bars spaced apart and spanning between the two lifting blocks, for pressing the battery to be tested onto the worktable.

[0012] According to the present invention, a battery testing device includes a locking mechanism comprising a third driving member, which drives the lifting block to move up and down relative to the worktable, so that the pressure bar and the worktable together clamp the battery to be tested.

[0013] According to the present invention, a battery testing device further includes a mounting base, and the extrusion mechanism includes a mounting plate, the mounting plate being movably disposed on the mounting base, the extrusion head being fixed to the mounting plate, the length of the extrusion head covering the length of the battery to be tested, and the first driving member being used to drive the mounting plate to move the extrusion head in the horizontal direction.

[0014] According to the battery testing device provided by this utility model, the end face of the extrusion head facing the battery to be tested is an arc-shaped end face.

[0015] According to the present invention, a battery testing device includes a compression mechanism comprising a pressure sensor for monitoring the compression force applied to the battery under test.

[0016] According to the present invention, a battery testing device is provided in which the surface of the workbench on which the battery to be tested is provided with positioning grooves and / or anti-slip structures.

[0017] According to the present invention, a battery testing device includes a flipping mechanism comprising an angle sensor for monitoring the flipping angle of the battery to be tested.

[0018] This utility model provides a battery testing device that integrates a compression mechanism and a flipping mechanism. It can continuously perform compression and flipping tests on the same testing platform, realistically simulating the combined stress state of a battery after being compressed and then rolled under actual accident conditions. This improves the accuracy of battery performance testing, ensuring that the battery is safe and reliable before being put into use, thereby protecting vehicle and personnel safety and extending battery life. Furthermore, by conducting compression and flipping tests continuously, there is no need to transfer the battery, simplifying the overall testing process and improving efficiency. Eliminating the step of personnel handling and transferring the battery reduces the safety risks to personnel from damaged batteries, improving the safety of the testing process. In addition, the testing device is equipped with a locking mechanism to lock the battery during the flipping test, preventing the battery from moving or falling off during the flipping process, ensuring the accuracy and reliability of the flipping test. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is one of the structural schematic diagrams of the battery testing device provided by this utility model, wherein the locking mechanism is in a retracted state.

[0021] Figure 2 This is the second structural schematic diagram of the battery testing device provided by this utility model, in which the locking mechanism is in use.

[0022] Figure 3 This is the third structural schematic diagram of the battery testing device provided by this utility model, wherein the battery to be tested is flipped to a certain angle.

[0023] Figure label: 10. Extrusion mechanism; 11. Extrusion head; 12. Mounting plate; 20. Tilting mechanism; 21. Worktable; 22. Tilting beam; 30. Locking mechanism; 31. Lifting block; 32. Pressure bar; 33. Receiving groove; 40. Mounting base; 41. Support plate; 100. Battery. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] like Figures 1 to 3 As shown, this utility model provides a battery testing device, comprising: The extrusion mechanism 10 includes an extrusion head 11 and a first drive member, the first drive member being used to drive the extrusion head 11 to move in a horizontal direction to provide extrusion force to the battery 100 to be tested located in front of the extrusion head 11. The flipping mechanism 20 includes a worktable 21 and a second driving member. The worktable 21 is disposed below the front side of the extrusion head 11 to provide a placement space for the battery to be tested 100. The second driving member is used to drive the worktable 21 to drive the battery to be tested 100 to flip synchronously. The locking mechanism 30 is used to fix the battery under test 100 so as to press the battery under test 100 onto the worktable 21.

[0029] This utility model's battery testing device integrates a compression mechanism 10 and a flipping mechanism 20. The compression mechanism 10 is used for compression testing of the battery 100, and the flipping mechanism 20 is used for flipping testing of the battery 100. The battery 100 can undergo compression and flipping tests sequentially, achieving continuous testing that more closely resembles actual accident conditions. This provides a reliable testing method for accurately evaluating the comprehensive safety performance of the battery 100 and offers more reliable experimental data support for the safety design and improvement of the battery 100. Both the compression and flipping tests can be performed automatically. After the compression test, the battery 100 does not need to be moved or transferred and can quickly enter the flipping test. This not only increases efficiency but also eliminates the need for manual intervention, saving labor costs and preventing personnel from coming into contact with the battery 100, thus reducing personnel safety risks.

[0030] The worktable 21 of the flipping mechanism 20 serves not only as a platform for placing the battery 100 during flipping tests but also as a platform for placing the battery 100 during compression tests. This allows for a more compact arrangement of the compression mechanism 10 and the flipping mechanism 20, and a simpler structural configuration. During the compression test of the battery 100, the worktable 21 remains horizontal and stationary, with only the compression head 11 pressing towards the battery 100. During the flipping test of the battery 100, the worktable 21 drives the battery 100 to rotate synchronously, with no relative movement between the two, ensuring the accuracy of the flipping test. The locking mechanism 30 secures the battery 100 before the flipping test begins, firmly pressing it against the worktable 21 and ensuring the battery 100 remains stable during the rotation of the worktable 21. The entire testing process can be automated through an integrated control module, which records various test data in real time.

[0031] In a preferred embodiment of the present invention, the workbench 21 is provided with a receiving cavity, and the locking mechanism 30 is movably disposed on the workbench 21. The locking mechanism 30 has a storage position hidden in the receiving cavity and a use position extending out of the receiving cavity to fix the battery 100 to be tested.

[0032] like Figure 1 As shown, before and during the compression test of the battery 100, the locking mechanism 30 is housed within the receiving cavity to avoid interfering with the movement of the compression head 11, thereby ensuring the smooth conduct of the compression test. Figure 2 As shown, after the battery 100 has undergone the compression test, the locking mechanism 30 can extend from the receiving cavity and move to a position higher than the worktable 21 to lock the battery 100 on the worktable 21, thus providing conditions for the battery 100 to undergo a flipping test. By retractably mounting the locking mechanism 30 on the worktable 21, interference with the movement of the compression head 11 can be avoided. Furthermore, the locking mechanism 30's proximity to the worktable 21 allows it to quickly reach the desired position to secure the battery 100, thereby improving the overall efficiency of the testing process.

[0033] In some embodiments, the locking mechanism 30 includes a lifting block 31 and a pressure bar 32. The lifting block 31 has a receiving groove 33 on the side facing the battery 100 to be tested, and the pressure bar 32 is retractably disposed in the receiving groove 33.

[0034] By setting a retractable pressure bar 32, when not in use, the pressure bar 32 can be stored in the receiving groove 33, which can reduce the overall volume of the locking mechanism 30 and thus reduce the space occupied by the worktable 21. When in use, the pressure bar 32 extends out from the receiving groove 33, with the pressure bar 32 located on the upper side of the battery 100 and the worktable 21 located on the lower side of the battery 100. Thus, the pressure bar 32 and the worktable 21 can limit the clamping space and realize the clamping and fixing of the battery 100.

[0035] Furthermore, two lifting blocks 31 are provided on opposite sides of the battery 100 to be tested, and two pressure strips 32 are provided. The two pressure strips 32, which are spaced apart, span between the two lifting blocks 31 and are used to press the battery 100 to be tested onto the worktable 21.

[0036] like Figure 2 As shown, by using two pressure strips 32 to laterally press the battery 100 together, the fixation of the battery 100 can be improved, preventing the battery 100 from shifting or falling off. Furthermore, the combined action of the two pressure strips 32 reduces the force exerted by a single pressure strip 32, preventing excessive local pressure on the battery 100 and thus ensuring the structural integrity of the battery 100. For example, metal pressure strips 32 can be used, which have good mechanical strength and can enhance the fixing effect on the battery 100.

[0037] This application does not specify the telescopic setting method of the pressure strip 32. For example, it can be achieved in any of the following ways.

[0038] In one example, two pressure strips 32 are respectively set in the corresponding receiving slots 33 of the two lifting blocks 31. When in use, one end (free end) of the pressure strip 32 is pulled out from the receiving slot 33. After the pressure strip 32 spans across the surface of the battery 100, one end of the pressure strip 32 is fixed on the lifting block 31 on the opposite side. At this time, the pressure strip 32 spans between the two lifting blocks 31, which can ensure the fixation firmness and reliability of the battery 100.

[0039] In another example, two pressure strips 32 are set on the same lifting block 31. When in use, the pressure strips 32 are stretched toward the lifting block 31 on the opposite side in turn and the free end of the pressure strips 32 is fixed so that the pressure strips 32 span between the two lifting blocks 31, ensuring the fixation firmness and reliability of the battery 100.

[0040] It is understood that although the above embodiments all describe a retractable pressure strip 32, this does not constitute a limitation on the present application. In other embodiments, the pressure strip 32 may also adopt other configurations. For example, both ends of the two pressure strips 32 are slidably disposed in the sliding grooves on the sides of the two lifting blocks 31. The pressure strips 32 always span between the two lifting blocks 31. The pressure strips 32 can move along the sliding grooves to reach above the battery 100, and then the pressure strips 32 descend to press the battery 100.

[0041] In some embodiments, the locking mechanism 30 includes a third driving member for driving the lifting block 31 to rise and fall relative to the worktable 21, so that the pressure bar 32 and the worktable 21 together clamp the battery 100 to be tested.

[0042] In actual use, initially, the lifting block 31 is housed within the receiving cavity. When it is necessary to fix the battery 100, the third drive unit drives the lifting block 31 to rise. After the pressure bar 32 has extended, it is positioned above the battery 100. The height of the lifting block 31 is then adjusted by the third drive unit, ultimately allowing the pressure bar 32 and the worktable 21 to clamp the battery 100. Since the clamping space defined by the pressure bar 32 and the worktable 21 is adjustable, it can accommodate batteries 100 of different thicknesses, improving the versatility of the device.

[0043] Furthermore, the lower surface of the pressure strip 32 is provided with an elastic buffer layer, which can accommodate batteries 100 of different thicknesses and provide appropriate pre-pressure when fixing the battery 100 to prevent the battery 100 from shifting or falling off during the flipping process. The clamping force of the locking mechanism 30 can be adjusted according to the specifications of the battery 100 to ensure that the battery 100 is firmly fixed without causing additional mechanical damage to the battery 100.

[0044] In a preferred embodiment of the present invention, the battery 100 testing device further includes a mounting base 40, the extrusion mechanism 10 includes a mounting plate 12, the mounting plate 12 is movably disposed on the mounting base 40, the extrusion head 11 is fixed to the mounting plate 12, the length of the extrusion head 11 covers the length of the battery 100 to be tested, and the first driving member is used to drive the mounting plate 12 to move the extrusion head 11 in the horizontal direction.

[0045] like Figure 1As shown, the mounting base 40 provides a mounting for the extrusion mechanism 10. The first driving member is mounted on the mounting base 40 and can be connected to the mounting plate 12 via a transmission structure to drive the mounting plate 12 to extend and retract. It is understood that the extrusion head 11 of this application has a first degree of freedom of movement in the horizontal direction. By moving the extrusion head 11 forward, it can gradually contact the surface of the battery 100 to extrude the battery 100. To adapt to batteries 100 of different thicknesses and improve the flexibility of extrusion testing, the extrusion head 11 can also have a second degree of freedom of movement in the vertical direction. This way, regardless of the thickness of the battery 100 under test, its height can be adjusted by driving the extrusion head 11 up and down, thereby ensuring contact with the battery 100 and extrusion. The first driving member can be a servo motor or a stepper motor, equipped with an encoder and a pressure sensor, capable of real-time feedback of extrusion displacement and extrusion force data. Of course, the first driving member can also be a pneumatic or hydraulic drive structure. The testing device of this invention also includes a controller, which can adjust the extrusion speed, extrusion pressure, and extrusion stroke according to a preset program or real-time feedback signal. The extrusion speed is continuously adjustable within the range of 0.1-50 mm / s, the maximum extrusion pressure can reach 1000 kN, and the extrusion stroke can be set according to different battery specifications. By combining a precision sensor and control system, the extrusion mechanism can monitor and adjust various parameters during the extrusion process in real time, ensuring that the required accuracy is maintained throughout the entire test. During operation, the user can set multiple working parameters according to different test requirements, including extrusion speed, peak pressure, and extrusion stroke. By adjusting these parameters, the requirements of various battery extrusion test standards can be met. For example, for different models and specifications of batteries, the operator can select appropriate extrusion speed and pressure to simulate extreme conditions that may occur in actual application scenarios. This flexibility not only improves the adaptability of the test but also provides important data support for the safety evaluation of battery products.

[0046] The use of a long strip-shaped extrusion head 11 ensures that the battery 100 is extruded evenly along its length, improving extrusion uniformity and ensuring the accuracy of test results.

[0047] Furthermore, the end face of the extrusion head 11 facing the battery 100 under test is an arc-shaped end face. The curved surface design of the arc-shaped end face meets the requirements of relevant testing standards, and can uniformly apply pressure to the surface of the battery 100, thereby improving the accuracy of the test results.

[0048] In a preferred embodiment of this invention, the extrusion mechanism 10 includes a pressure sensor for monitoring the extrusion force applied to the battery 100 under test. By monitoring the extrusion force applied to the battery 100 in real time, the degree of damage to the battery 100 under different extrusion forces can be accurately analyzed, providing a reference for evaluating the strength and durability of the battery 100, determining whether the quality of the battery 100 meets the standards, and reminding researchers whether further optimization of the battery 100 is needed.

[0049] To enhance the positioning effect of the battery 100, the surface of the worktable 21 used to place the battery 100 under test is provided with a positioning structure. This positioning structure can be at least one of a positioning groove and an anti-slip structure. The positioning groove, for example, is a recessed groove on the surface of the worktable 21 that conforms to the shape of the battery 100. By confining the battery 100 within the positioning groove, the probability of the battery 100 shifting or falling off can be reduced. The anti-slip structure can be an integrally formed anti-slip pattern, anti-slip protrusion, etc., on the surface of the worktable 21, or it can be an additional anti-slip pad, depending on actual needs. In a preferred embodiment, the worktable 21 is provided with a positioning groove, and the bottom and side walls of the positioning groove are provided with anti-slip structures. Through the superposition of positioning effects, the fixing effect of the battery 100 can be further improved.

[0050] In a preferred embodiment of the present invention, the flipping mechanism 20 includes an angle sensor for monitoring the angle at which the battery under test 100 is flipped.

[0051] like Figure 3 The diagram shows the worktable 21 rotating the battery 100 to a certain angle. The worktable 21 is tilted, and the battery 100 remains stable under the clamping of the pressure bar 32 and the worktable 21, preventing it from slipping or shifting. The flipping mechanism 20 can achieve 360-degree continuous rotation or stop at any angle, comprehensively evaluating the safety performance of the battery 100 in different postures.

[0052] By setting an angle sensor, the flip angle of the battery 100 can be precisely controlled to detect the state of the battery 100 at various angles, thereby improving the accuracy of the test.

[0053] Furthermore, the testing device also includes a support plate 41. The worktable 21 is mounted on the support plate 41 via a tilting beam 22. A second drive unit can drive the tilting beam 22 to rotate the worktable 21. The second drive unit can drive the worktable 21 to rotate within a 360-degree range. The second drive unit can be, for example, a servo motor, which can precisely control the tilting speed and tilting angle. The motor can also rotate the worktable 21 in different directions by reversing its direction, improving control flexibility. The tilting speed is continuously adjustable within the range of 0.1-10 rpm, and the dwell time at any angle can be set.

[0054] The working principle of the battery testing device of this utility model is as follows: the battery 100 to be tested is placed on the workbench 21, the first driving component is started, and the battery 100 is squeezed according to the preset parameters; after the squeezing is completed, the battery 100 does not need to be moved, the battery 100 is fixed by the locking mechanism 30, and then the second driving component is started to perform a flipping test on the battery 100; the entire testing process can be automatically controlled by the integrated control module, and various test data are recorded in real time.

[0055] The battery testing device provided by this utility model integrates a compression mechanism 10 and a flipping mechanism 20, enabling continuous compression and flipping tests on the same testing platform. This realistically simulates the combined stress state of the battery 100 under actual accident conditions, where it is subjected to compression and then continues to roll. This improves the accuracy of battery 100 performance testing, ensuring the battery 100 is safe and reliable before use, thereby protecting vehicle and personnel safety and extending the battery 100's lifespan. Furthermore, by conducting compression and flipping tests continuously, there is no need to transfer the battery 100, simplifying the overall testing process and improving efficiency. Eliminating the step of personnel handling and transferring the battery 100 reduces the safety risk to personnel from damaged batteries 100, enhancing the safety of the testing process. In addition, the testing device is equipped with a locking mechanism 30, which locks the battery 100 during the flipping test, preventing it from moving or falling off during the flipping process and ensuring the accuracy and reliability of the flipping test.

[0056] The battery testing device provided by this utility model integrates compression and flipping tests, realistically simulating the combined stress state of battery 100 in actual accidents, thus improving the reliability and reference value of test results. It avoids the need for transferring battery 100 after compression, eliminating the safety hazards of manual handling, while ensuring the continuity of the battery 100's state after compression, making the test data more authentic and reliable. Adopting a modular design, each functional structure is relatively independent yet works collaboratively, allowing for both linked testing and individual compression or flipping tests, improving the equipment's flexibility. Equipped with a complete automated control system and data acquisition system, it enables fully automated operation of the testing process and real-time data recording, significantly improving testing efficiency. With a reasonable structural design and convenient maintenance, it can adapt to the testing needs of different specifications and models of battery 100, possessing good versatility and expandability.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery testing device, characterized in that, include: The extrusion mechanism (10) includes an extrusion head (11) and a first drive member, the first drive member being used to drive the extrusion head (11) to move in a horizontal direction to provide extrusion force to the battery (100) to be tested located in front of the extrusion head (11); The flipping mechanism (20) includes a worktable (21) and a second drive member. The worktable (21) is located below the front side of the extrusion head (11) to provide a placement space for the battery to be tested (100). The second drive member is used to drive the worktable (21) to drive the battery to be tested (100) to flip synchronously. A locking mechanism (30) is used to fix the battery under test (100) so as to press the battery under test (100) onto the worktable (21).

2. The battery testing apparatus according to claim 1, characterized in that, The workbench (21) has a receiving cavity inside, and the locking mechanism (30) is movably disposed on the workbench (21). The locking mechanism (30) has a storage position hidden in the receiving cavity and a use position extending out of the receiving cavity to fix the battery (100) to be tested.

3. The battery testing apparatus according to claim 2, characterized in that, The locking mechanism (30) includes a lifting block (31) and a pressure bar (32). The lifting block (31) has a receiving groove (33) on the side facing the battery (100) to be tested, and the pressure bar (32) is retractably disposed in the receiving groove (33).

4. The battery testing apparatus according to claim 3, characterized in that, Two lifting blocks (31) are provided on opposite sides of the battery to be tested (100), and two pressure strips (32) are provided. The two pressure strips (32) are spaced apart and span between the two lifting blocks (31) to press the battery to be tested (100) onto the worktable (21).

5. The battery testing apparatus according to claim 3, characterized in that, The locking mechanism (30) includes a third drive member for driving the lifting block (31) to rise and fall relative to the worktable (21) so that the pressure bar (32) and the worktable (21) together clamp the battery to be tested (100).

6. The battery testing apparatus according to claim 1, characterized in that, Also includes: Mounting base (40), the extrusion mechanism (10) includes mounting plate (12), the mounting plate (12) is movably disposed on the mounting base (40), the extrusion head (11) is fixed to the mounting plate (12), the length of the extrusion head (11) covers the length of the battery to be tested (100), the first driving member is used to drive the mounting plate (12) to drive the extrusion head (11) to move in the horizontal direction.

7. The battery testing apparatus according to claim 6, characterized in that, The end face of the extrusion head (11) facing the battery (100) to be tested is an arc-shaped end face.

8. The battery testing apparatus according to any one of claims 1-7, characterized in that, The extrusion mechanism (10) includes a pressure sensor for monitoring the extrusion force on the battery under test (100).

9. The battery testing apparatus according to any one of claims 1-7, characterized in that, The surface of the workbench (21) for placing the battery (100) to be tested is provided with positioning grooves and / or anti-slip structures.

10. The battery testing apparatus according to any one of claims 1-7, characterized in that, The flipping mechanism (20) includes an angle sensor for monitoring the angle at which the battery under test (100) flips.

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