High-precision multi-point impact test tool for battery

Abstract

This invention provides a high-precision multi-point impact testing fixture for batteries, comprising a chassis, a touch screen, a fixture plate, an XY-axis servo direct drive platform, a Z-axis servo drive device, and a handheld programmer. The touch screen is housed within the chassis, and the fixture plate is mounted on the chassis. Both the XY-axis servo direct drive platform and the Z-axis servo drive device are mounted on the fixture plate. The XY-axis servo direct drive platform has a battery fixing device, and the Z-axis servo drive device has a guide tube. A test drop hammer is movably mounted at the end of the guide tube away from the chassis. The test drop hammer is picked up or released along the guide tube via a servo motor lead screw device. This high-precision multi-point impact testing fixture for batteries is suitable for multi-point impact testing. The testing process does not require manual fixture reset, resulting in high testing efficiency and enabling precise positioning testing of a specific part of the battery.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery testing technology, and in particular to a high-precision multi-point impact testing fixture for batteries. Background Technology

[0002] Existing battery free-fall impact devices are only suitable for single-point impact testing. The testing process requires manual resetting of the testing fixture, resulting in low testing efficiency and the inability to perform precise positioning tests on a specific part of the battery. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision multi-point impact testing fixture for batteries.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a high-precision multi-point impact testing fixture for batteries, comprising a chassis, a touch screen, a fixture plate, an XY-axis servo direct drive platform, a Z-axis servo drive device, and a handheld programmer. The touch screen is housed in the chassis, the fixture plate is mounted on the chassis, the XY-axis servo direct drive platform and the Z-axis servo drive device are both mounted on the fixture plate, the XY-axis servo direct drive platform is provided with a battery fixing device, the Z-axis servo drive device is provided with a guide tube, and a test drop hammer is movably mounted at the end of the guide tube away from the chassis. The test drop hammer is picked up or released along the guide tube by a servo motor lead screw device. The handheld programmer is electrically connected to the touch screen, the XY-axis servo direct drive platform, and the Z-axis servo drive device.

[0005] Furthermore, the Z-axis servo drive device is equipped with an electromagnetic relay, and the electromagnetic relay is equipped with a laser pointing and positioning device.

[0006] Furthermore, the electromagnetic relay is positioned above the test hammer.

[0007] Furthermore, one of the test hammer and the electromagnetic relay is a concave surface, and the other of the test hammer and the electromagnetic relay is a convex surface, with the concave surface and the convex surface cooperating with each other.

[0008] Furthermore, the top of the test hammer is convex, and the bottom of the electromagnetic relay is concave.

[0009] Furthermore, the battery under test fixing device fixes the battery under test by snap-fit ​​or threaded connection.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] This utility model discloses a high-precision multi-point impact testing fixture for batteries. Firstly, to meet the requirements of multi-point array testing of lithium-ion batteries, it uses an XY-axis servo direct-drive platform for precise positioning, accurately locating the battery parts under test. Secondly, it uses an electromagnetic relay and servo motor lead screw device to control the hammer's intake and release, ensuring the effectiveness of free impact testing and avoiding interference from other factors during the testing process. Thirdly, the XY-axis servo direct-drive platform, electromagnetic relay, and servo motor lead screw device can meet the requirements of continuous multi-point impact testing, greatly improving testing efficiency, and eliminating the need for manual intervention. Finally, a laser pointing and positioning device uses a laser beam to coincide with the tested part for positioning. Through a handheld programmer and the touch screen display, it can achieve precise multi-point alignment between the hammer and the tested part, ensuring the effectiveness of continuous multi-point impact testing. The hammer bottom and the electromagnetic relay have a concave-convex conical combination structure, enabling automatic alignment and alignment between the hammer and the battery relay.

[0012] The high-precision multi-point impact testing fixture for batteries of this invention is suitable not only for single-point impact testing but also for multi-point impact testing. The testing process does not require manual reset of the testing fixture, resulting in high testing efficiency and enabling precise positioning testing of a specific part of the battery. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the high-precision multi-point impact testing fixture for batteries according to this utility model.

[0014] Figure 2 This is a schematic diagram of the surface of a tested lithium-ion battery according to one embodiment.

[0015] Legend:

[0016] 1. Touch screen display 2. Tooling plate 3. XY axis servo direct drive platform 4. Electromagnetic relay 5. Guide tube 6. Z axis servo drive device 7. Test drop hammer 8. Laser indicator positioning device 9. Handheld programmer 10. Test battery fixing device Detailed Implementation

[0017] Please see Figures 1-2This utility model provides a high-precision multi-point impact testing fixture for batteries, including a chassis, a touch screen 1, a fixture plate 2, an XY-axis servo direct drive platform 3, a Z-axis servo drive device 6, and a handheld programmer 9. The touch screen is located in the chassis, the fixture plate is located on the chassis, the XY-axis servo direct drive platform and the Z-axis servo drive device are both located on the fixture plate, the XY-axis servo direct drive platform is provided with a battery fixing device 10, the Z-axis servo drive device is provided with a guide tube 5, and a test drop hammer 7 is movably installed at the end of the guide tube away from the chassis. The test drop hammer is picked up or released along the guide tube by a servo motor lead screw device. The handheld programmer is electrically connected to the touch screen, the XY-axis servo direct drive platform and the Z-axis servo drive device, thereby realizing rapid programming of test operation parameters and automatic operation testing.

[0018] In one embodiment, the Z-axis servo drive device is equipped with an electromagnetic relay 4, and the electromagnetic relay is equipped with a laser pointing and positioning device 8.

[0019] In one embodiment, the electromagnetic relay is positioned above the test hammer.

[0020] In one embodiment, one of the test hammer and the electromagnetic relay is a concave surface, and the other of the test hammer and the electromagnetic relay is a convex surface. The concave surface and the convex surface cooperate to achieve automatic alignment between the test hammer and the electromagnetic relay.

[0021] In one embodiment, the top of the test hammer is a convex surface, and the bottom of the electromagnetic relay is a concave surface.

[0022] In one embodiment, the battery under test fixing device fixes the battery under test by snap-fit ​​or threaded connection.

[0023] Specifically, the touch screen is embedded in the middle of the chassis, enabling human-computer interaction. The tooling plate is fixed to the top of the chassis, providing support for other mechanical and electrical components. The XY-axis servo direct drive platform is fixed to the plate, enabling XY-axis movement and positioning. The Z-axis servo direct drive platform is fixed to the base plate, enabling Z-axis movement and positioning. The electromagnetic relay is fixed to the Z-axis servo direct drive platform, enabling the gripping / releasing of the drop hammer. The guide tube is fixed to the Z-axis servo direct drive platform, ensuring the drop hammer remains upright before and after testing. The test drop hammer can impact the battery under test at multiple points. The laser indicator is built into the electromagnetic relay, maintaining concentricity with the center of the drop hammer for precise positioning of the object under test. The battery under test fixing device is fixed to the base plate, securing the battery under test.

[0024] The working principle of this high-precision multi-point impact testing fixture for batteries is as follows: The battery under test is fixed in the battery fixing device, which is fixed by screw clamps / screw fastening blocks; after the device is powered on and automatically resets to find the reference origin, the automatic multi-point impact test program (including the target parameters required for the test) is set by the handheld programmer and the touch screen. The program is set according to the distance requirements of the impact points, and the impact test points are arrayed at equal intervals in the XY axis direction (e.g., in an 8*8mm equal interval array). The total number of impact points / impact area range is determined according to the length and width of the battery, and a laser indicator is used to calibrate and determine the array points of the battery under test one by one; the Z-axis servo direct drive platform moves upward to the specified height and inserts the test drop hammer into the bottom of the electromagnetic relay (in the energized state). The program is started. The XY-axis servo direct drive platform automatically moves to the first test point of the battery cell under test, and the electromagnetic relay is disconnected to release the drop hammer to impact the first point of the battery under test. The Z-axis servo direct drive platform automatically moves downward, and the bottom of the electromagnetic relay (in a energized state) picks up the drop hammer. The conical convex structure on the top of the drop hammer automatically embeds into the concave structure on the bottom of the electromagnetic relay to achieve centering of the drop hammer. The Z-axis servo direct drive platform moves upward to the specified height for the second time, and the XY-axis servo direct drive platform automatically moves to the second test point of the battery cell under test. Steps 2 and 3 are repeated until the test program ends. The XYZ servo direct drive platform returns to the origin, and finally the battery under test is manually removed.

[0025] Understandably, the battery of this utility model uses a high-precision multi-point impact testing fixture with a drop weight of 50~150g, a test height of 50~120cm, and the dimensions of the battery being tested: W: 10~150mm, L: 30~200mm, with 50~100 test points; if the battery being tested does not explode or catch fire, it is considered to have passed the test.

[0026] This utility model discloses a high-precision multi-point impact testing fixture for batteries. Firstly, to meet the requirements of multi-point array testing of lithium-ion batteries, the XY-axis servo direct-drive platform provides precise positioning of the tested battery components, achieving a minimum positioning accuracy of ±0.05mm. Secondly, the electromagnetic relay and servo motor lead screw control the hammer's pickup and release, ensuring effective free impact testing and avoiding interference from other factors during the testing process. Thirdly, the XY-axis servo direct-drive platform, electromagnetic relay, and servo motor lead screw enable continuous multi-point impact testing, significantly improving testing efficiency without requiring manual intervention. Finally, the laser pointing and positioning device ensures the laser beam aligns with the tested area, and the handheld programmer and touchscreen display enable precise multi-point alignment of the hammer and the tested area, guaranteeing effective continuous multi-point impact testing. The hammer's bottom and the electromagnetic relay feature a concave-convex conical combination structure, facilitating automatic alignment between the hammer and the battery relay.

[0027] The high-precision multi-point impact testing fixture for batteries of this invention is suitable not only for single-point impact testing but also for multi-point impact testing. The testing process does not require manual reset of the testing fixture, resulting in high testing efficiency and enabling precise positioning testing of a specific part of the battery.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A high-precision multi-point impact testing fixture for batteries, characterized in that: The device includes a chassis, a touch screen, a fixture plate, an XY-axis servo direct drive platform, a Z-axis servo drive unit, and a handheld programmer. The touch screen is housed in the chassis, the fixture plate is mounted on the chassis, and both the XY-axis servo direct drive platform and the Z-axis servo drive unit are mounted on the fixture plate. The XY-axis servo direct drive platform has a battery fixing device, and the Z-axis servo drive unit has a guide tube. A test drop weight is movably mounted on the end of the guide tube away from the chassis. The test drop weight is picked up or released along the guide tube by a servo motor lead screw device. The handheld programmer is electrically connected to the touch screen, the XY-axis servo direct drive platform, and the Z-axis servo drive unit.

2. The high-precision multi-point impact testing fixture for batteries according to claim 1, characterized in that: The Z-axis servo drive device is equipped with an electromagnetic relay, and the electromagnetic relay is equipped with a laser pointing and positioning device.

3. The high-precision multi-point impact testing fixture for batteries according to claim 2, characterized in that: The electromagnetic relay is positioned above the test hammer.

4. The high-precision multi-point impact testing fixture for batteries according to claim 3, characterized in that: One of the test hammer and the electromagnetic relay is a concave surface, and the other of the test hammer and the electromagnetic relay is a convex surface, with the concave surface and the convex surface cooperating with each other.

5. The high-precision multi-point impact testing fixture for batteries according to claim 3, characterized in that: The top of the test hammer is convex, and the bottom of the electromagnetic relay is concave.

6. The high-precision multi-point impact testing fixture for batteries according to claim 5, characterized in that: The battery under test is fixed by means of snap-fit ​​or threaded connection.

Images