Battery Pack Detection Drop Tower

Abstract

The utility model discloses a battery pack detection drop tower, comprising a tower, an impact detection assembly and a counterweight assembly; a track is provided on the tower; the impact detection assembly comprises a detection head, the impact detection assembly can move along the extension direction of the track, drive the detection head and impact the battery pack to be detected, and the end of the detection head close to the battery pack is curved; the counterweight assembly comprises a detachable counterweight block, and the counterweight assembly is arranged on one side of the impact detection assembly. The utility model effectively improves the accuracy of the safety performance test of the battery pack of new energy vehicles under impact conditions. The drop tower not only provides an adjustable impact force, but also changes the surface contact of the existing technology into point contact. The curved surface detection head simulates a more realistic impact situation. At the same time, a non-return mechanism is designed to reduce the secondary impact caused by impact rebound, thereby ensuring the authenticity and reliability of the data of the battery pack in actual detection, being closer to the simulated real scene, and further improving the safety and reliability in use.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy automobile manufacturing, in particular to a battery pack falling detection tower. Background Art

[0002] With the popularity of new energy vehicles, the production efficiency and product quality requirements for automobile manufacturers are becoming more and more stringent. As the "heart" of new energy vehicles, the safety performance of batteries is undoubtedly a key factor in ensuring the safety of the entire vehicle and its passengers. In traffic accidents, the vehicle chassis is often the first part to be hit. This impact may cause the battery cells or high-voltage components in the battery pack to be squeezed or punctured, leading to serious consequences such as short circuits, fires, and even explosions. In order to prevent and reduce such risks, battery spontaneous combustion detection equipment is introduced into the existing production process for impact testing. This test is designed to simulate the strong impact that a vehicle may encounter in an actual traffic accident in order to evaluate the safety performance of the battery pack under extreme conditions. Through carefully designed impact experiments, we can effectively simulate the response of the battery pack when it is hit at different angles and with different intensities, thereby gaining insight into potential safety hazards in the battery design or manufacturing process.

[0003] The existing new energy vehicle battery pack detection uses a drop tower to impact the battery pack, which has the following technical problems: the drop tower impact detection head is a cylinder. After the battery pack is installed in the car chassis, the surface will have an irregular shape, and the cylinder is in surface contact, so the detection applicability and flexibility are relatively poor. In addition, after the impact detection head hits the battery pack, a rebound phenomenon will occur, which may cause a secondary impact or multiple impacts. The results obtained are not real data from a real impact. Such multiple impacts may change the stress state of the battery pack. The secondary impact may also cause damage or changes to the internal structure of the battery pack. There will also be certain deviations in physical properties during the subsequent detection process, which cannot simulate the real environment to the maximum extent, thus affecting the accuracy of the test results. Utility Model Content

[0004] According to an embodiment of the utility model, in order to solve the above-mentioned deficiencies in the prior art, a battery pack fall detection tower is provided, which is used to detect battery packs that have been assembled on the chassis of new energy vehicles, and comprises a tower, an impact detection assembly and a counterweight assembly; a track is provided on the tower; the impact detection assembly comprises a detection head, which can move along the extension direction of the track, drive the detection head and impact the battery pack to be detected, and the end of the detection head close to the battery pack is an arc surface; the counterweight assembly comprises a detachable counterweight block, and the counterweight assembly is arranged on one side of the impact detection assembly.

[0005] Preferably, the counterweight assembly comprises a positioning slot and a plurality of counterweight blocks, and the plurality of counterweight blocks can be coupled into the positioning slot.

[0006] Preferably, the end of the detection head close to the battery pack is a sphere.

[0007] Preferably, the end of the detection head close to the battery pack is a hemisphere.

[0008] Preferably, the drop tower comprises at least one track, and a non-return mechanism is provided on one side of the track, which can support and block the detection head from contacting the battery pack again when the detection head rebounds a certain distance after hitting the battery pack to be detected.

[0009] Preferably, a track is provided on each side of the falling tower, and a non-return mechanism is provided on each side of the track in the same direction.

[0010] Preferably, the non-return mechanism comprises a driver and a blocking body, and the driver can drive the blocking body to enter or move away from the path of movement of the detection head.

[0011] Preferably, the driver is a cylinder, and the baffle is a plunger or a baffle.

[0012] Preferably, an identification component is provided on one side of the track, and the identification component includes a photoelectric sensor element, and the photoelectric sensor element can detect that the detection head passes through the identification component.

[0013] Preferably, a pair of identification components is provided on one side of the track, and the pair of identification components are respectively provided on both sides of the non-return mechanism.

[0014] The battery pack detection drop tower according to the embodiment of the utility model can effectively improve the accuracy of the safety performance test of the battery pack of new energy vehicles under impact conditions, and simulate a more realistic impact situation through the arc detection head, simulating different collision scenarios in real accidents. In particular, the design of the arc detection head simulates a wider impact surface, making the impact force more evenly distributed, not limited by the surface shape of the battery pack and chassis to be tested, and improving the accuracy and authenticity of the test; the drop tower provides an adjustable impact force to simulate collisions of different severity. This adjustability enhances the comprehensiveness and practicality of the test, and helps to more comprehensively evaluate the safety performance of the battery pack. At the same time, it reduces secondary injuries caused by impact rebound, thereby ensuring that the battery pack is closer to the real scene in the test scenario, thereby ensuring safety and reliability in actual use.

[0015] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a battery pack detection drop tower according to an embodiment of the utility model;

[0017] Figure 2 This is a first partial enlarged schematic diagram of a battery pack detection drop tower according to an embodiment of the utility model;

[0018] Figure 3 It is a second partial enlarged schematic diagram of the battery pack falling tower according to an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0020] First, combine Figures 1 to 3 The battery pack detection drop tower according to the embodiment of the utility model is described, which is widely used in scenarios such as battery pack research and development and testing, automobile repair and maintenance, etc. This description takes the quality inspection of new energy vehicle manufacturers as an example.

[0021] like Figures 1 to 3 As shown, the battery pack falling detection tower of the embodiment of the utility model is used to detect the battery pack assembled on the chassis of the new energy vehicle, and comprises a tower frame 1, an impact detection component 2 and a counterweight component 3.

[0022] Specifically, Figure 1 , 2 As shown, a track 11 is provided on the tower 1. The track 11 on the tower 1 ensures that the impact detection component 2 can move along a precise path, thereby realizing accurate impact tests on different positions of the battery pack; the impact detection component 2 includes a detection head 21, which can move along the extension direction of the track 11, drive the detection head 21 and impact the battery pack to be detected, and the end of the detection head 21 close to the battery pack is curved, simulating different collision scenarios in real accidents. In particular, the design of the curved detection head 21 simulates a wider impact surface, making the impact force more evenly distributed, not limited to the surface shape of the battery pack and chassis to be detected, and improving the accuracy and authenticity of the test; the counterweight component 3 includes a detachable counterweight block 32, and the counterweight component 3 is arranged on one side of the impact detection component 2, realizing impact tests of different intensities on the battery pack, thereby simulating collisions of different severity. This adjustability enhances the comprehensiveness and practicality of the test, and helps to more comprehensively evaluate the safety performance of the battery pack.

[0023] Preferably, if Figure 1 , 2 As shown, the counterweight assembly 3 includes a positioning slot 31 and a plurality of counterweight blocks 32. The plurality of counterweight blocks 32 can be coupled in the positioning slot 31. The coupling method saves connectors and is easier to assemble, thereby improving efficiency. The plurality of counterweight blocks 32 can be adjusted as needed to simulate the behavior of battery packs of different weights in a drop test. This design increases the flexibility and adaptability of the test, so that the same set of test equipment can be used for testing battery packs of different weights.

[0024] Preferably, if Figures 1 to 3As shown, the end of the detection head 21 close to the battery pack side is a sphere, which realizes more intuitive and accurate point contact. The spherical end can reduce the stress concentration generated during impact, making the impact more uniform and closer to the actual falling situation, which helps to improve the accuracy and reliability of the test.

[0025] Preferably, if Figures 1 to 3 As shown, the end of the detection head 21 close to the battery pack is a hemisphere, which retains the technical effect of end point contact and can be more compactly connected to the counterweight assembly 3, which helps to concentrate the stress of impact.

[0026] Preferably, if Figures 1 to 3 As shown, the drop tower includes at least one track 11, and a check mechanism 4 is provided on one side of the track 11. The check mechanism 4 can support and block the detection head 21 from contacting the battery pack again when the detection head 21 hits the battery pack to be detected and rebounds a certain distance. The check mechanism 4 can support and block the detection head 21 when the detection head 21 hits the battery pack and rebounds, preventing it from contacting the battery pack again, thereby avoiding secondary damage or misjudgment to the battery pack. This helps to improve the accuracy of the test.

[0027] Preferably, if Figures 1 to 3 As shown, a track 11 is provided on each side of the drop tower, and a non-return mechanism 4 is provided on each side of the track 11 in the same direction. The double track 11 design increases the stability and safety of the test equipment. The two non-return mechanisms 4 protect the detection head 21 from both sides respectively, ensuring that it can stably prevent secondary impact after impact, which is more stable.

[0028] Preferably, the non-return mechanism 4 includes a driver and a baffle. The driver can drive the baffle to enter or move away from the moving path of the detection head 21. By controlling the position of the baffle by the driver, the working state of the non-return mechanism 4 can be flexibly adjusted according to test requirements.

[0029] Preferably, the driver is a cylinder and the baffle is a rod or a baffle. The cylinder as a driver has the characteristics of rapid action and precise control, while the rod or baffle as a baffle has the advantages of simple structure, easy installation and maintenance. Both the rod or the baffle can achieve good blocking effect with low cost and good overall effect.

[0030] Preferably, if Figure 3 As shown, an identification component 5 is provided on one side of the track 11. The identification component 5 includes a photoelectric sensor element. The photoelectric sensor element can detect when the detection head 21 passes through the identification component 5, accurately detect the position and time when the detection head 21 passes through the identification component 5, and then sense when the detection head 21 passes through the identification component 5 for the second time, enter the path to block, which provides an important basis for subsequent test data analysis and improves the degree of automation of the test and data processing efficiency.

[0031] Preferably, a pair of identification components 5 are provided on one side of the track 11, and the pair of identification components 5 are respectively provided on both sides of the non-return mechanism 4. The setting of the pair of identification components 5 can more accurately capture the position change and time information of the detection head 21 before and after the impact, and the signals passing sequentially are more accurate than a single signal, ensuring that the non-return mechanism 4 will not misjudge and extend when it falls for the first time, thereby increasing the stability and reliability of the test equipment; at the same time, the signals passing sequentially also provide preparation time for the non-return mechanism 4, and the non-return mechanism 4 is triggered when it passes the first photoelectric sensor after rebounding, thereby achieving the best coordination of time and position, and providing strong support for the accurate analysis of the test results.

[0032] When in use, according to the test needs, by adjusting the number and position of the counterweight blocks 32 in the counterweight assembly 3, set the appropriate counterweight to simulate different weights. Install the detection head 21 on the track 11 system to ensure that the detection head 21 is aligned with the battery pack to be tested. Identify the component 5 to ensure that the photoelectric sensor element can accurately detect the position and time of the detection head 21 passing. Through calibration, ensure the accuracy and stability of the identification component 5. Release the detection head 21 and let it fall freely along the track 11 system to hit the battery pack to be tested at a predetermined speed and angle. When the identification component 5 detects that the detection head 21 passes the first signal (i.e. before the impact), the check mechanism 4 remains stationary to avoid misjudgment of extension. When the detection head 21 passes the second signal (i.e. rebound after the impact), the identification component 5 will send a signal to the cylinder driver to drive the barrier (insertion rod or baffle) into the path of the detection head 21 to prevent it from contacting the battery pack again. After completing a test, collect the corresponding data, and the barrier can be retracted to its original position through the cylinder driver to prepare for the next test. At the same time, the counterweight assembly 3, the detection head 21 or other test parameters can be adjusted as needed to perform different types of tests.

[0033] Above, refer to Figure 1 , 2 The battery pack detection drop tower according to the embodiment of the utility model is described, which can effectively improve the accuracy of the safety performance test of the battery pack of new energy vehicles under impact. The drop tower not only provides an adjustable impact force, but also simulates a more realistic impact situation through the arc detection head. At the same time, the design of the non-return mechanism reduces the secondary impact caused by the impact rebound, thereby ensuring the authenticity and reliability of the data of the battery pack in the actual detection, being closer to the simulated real scene, and further improving the safety and reliability in use.

[0034] In the description of the present invention, it should be noted that, unless otherwise specified, “plurality” means two or more than two; the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside”, “outside”, “top”, and “bottom” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A battery pack detection drop tower, used to detect battery packs installed on the chassis of new energy vehicles, characterized in that: Include: A tower, wherein a track is provided on the tower; An impact detection component, the impact detection component includes a detection head, the impact detection component can move along the extension direction of the track, drive the detection head and impact the battery pack to be detected, and the end of the detection head close to the battery pack is an arc surface; A counterweight assembly, the counterweight assembly comprising a detachable counterweight block, and the counterweight assembly is arranged on one side of the impact detection assembly.

2. The battery pack detection falling tower according to claim 1, characterized in that: The counterweight assembly includes a positioning slot and a plurality of counterweight blocks, and the plurality of counterweight blocks can be coupled in the positioning slot.

3. The battery pack detection falling tower according to claim 2, characterized in that: The end of the detection head close to the battery pack is a sphere.

4. The battery pack detection falling tower according to claim 2, characterized in that: The end of the detection head close to the battery pack is a hemisphere.

5. The battery pack detection falling tower according to claim 1, characterized in that: The drop tower comprises at least one track, and a non-return mechanism is provided on one side of the track. The non-return mechanism can support and block the detection head from contacting the battery pack again when the detection head rebounds a certain distance after hitting the battery pack to be detected.

6. The battery pack detection falling tower according to claim 5, characterized in that: A track is respectively arranged on both sides of the falling tower, and one side of the track in the same direction is respectively provided with a non-return mechanism.

7. The battery pack detection falling tower according to claim 5 or 6, characterized in that: The non-return mechanism comprises a driver and a blocking body, and the driver can drive the blocking body to enter or move away from a moving path of the detection head.

8. The battery pack detection falling tower according to claim 7, characterized in that: The driver is a cylinder, and the baffle is a plunger or a baffle.

9. The battery pack detection falling tower according to claim 5, characterized in that: An identification component is provided on one side of the track. The identification component includes a photoelectric sensor element. The photoelectric sensor element can detect that the detection head passes through the identification component.

10. The battery pack detection falling tower according to claim 9, characterized in that: A pair of identification components is arranged on one side of the track, and the pair of identification components are arranged on both sides of the non-return mechanism respectively.

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