Circular battery cover plate pole fatigue test tool

Abstract

The utility model discloses a kind of circular battery cover plate pole fatigue test tool, comprising: clamping block male and clamping block female, for clamping cover plate assembly and the aluminum block welding head welded on the pole of cover plate assembly, and fixed by locking accessory I, the upper end of aluminum block welding head is fixed with torque clamping block by locking accessory II, torque clamping block is connected with actuator of fatigue testing machine;Fixed base, upper end is equipped with the cavity of being compatible with the outer contour of cover plate assembly, and cover plate assembly is pressed along Z axis direction from bottom by locking accessory III. In this way, cover plate assembly is pressed from bottom by fixed base, clamping block male and clamping block female are embraced from side aluminum block welding head welded on the pole, so that the freedom degree of cover plate assembly in X, Y, Z three directions is completely restrained, sliding, shaking or torsion in fatigue testing process is effectively prevented, make test result more accurate and reliable;Clamping and dismounting process is simple, fast, greatly improve test efficiency, facilitate experimental personnel operation.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a fatigue testing fixture for a circular battery cover plate terminal post. Background Technology

[0002] The battery top cover terminals are a critical component of the battery, responsible for conducting current and maintaining the battery's seal. Throughout the battery's lifespan, the terminals are subjected to repeated axial stresses due to the expansion and contraction of internal materials during charge and discharge cycles, as well as vibrations during vehicle operation. This alternating load can lead to fatigue fracture, loosening, or seal failure at the connection points (welded or riveted joints) between the terminals and the cover plate, potentially causing serious safety hazards such as battery leakage and short circuits. Therefore, it is crucial to conduct thrust fatigue testing under simulated operating conditions on the battery's cover plate terminal assembly before the battery leaves the factory.

[0003] The lack of dedicated tooling in the current fatigue testing of poles leads to the following defects: (1) The cover plate pole assembly is not fixed and is prone to shaking during testing, which interferes with the accuracy of load application and affects the accuracy of test data; (2) The tooling assembly is complicated, requiring multiple adjustments to the positioning, which is cumbersome and results in low experimental efficiency.

[0004] Therefore, there is an urgent need for a special tooling that can stably, reliably, and efficiently fix the battery cover plate and accurately apply axial thrust for fatigue testing. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model proposes a fatigue testing fixture for a circular battery cover plate terminal post.

[0006] This utility model proposes a fatigue testing fixture for a circular battery cover electrode post, comprising:

[0007] The clamping block male head and the clamping block female head are used to clamp the cover plate assembly and the aluminum block welding head welded on the pole of the cover plate assembly and are fixed by locking accessory I. The upper end of the aluminum block welding head is fixed with a torque clamping block by locking accessory II. The torque clamping block is used to connect with the actuator of the fatigue testing machine.

[0008] The fixed base has a downwardly extending cavity at the upper center that matches the outer contour of the cover plate assembly, and the cover plate assembly is pressed tightly from the bottom along the Z-axis direction by locking attachment III.

[0009] Preferably, the locking accessory III is a locking screw III that is locked along the Z-axis direction, the locking screw III passing through the fixed base and applying pressure to the periphery of the cover plate assembly.

[0010] Preferably, the locking accessory I is a horizontally locking screw I, which, by tightening the locking screw I, drives the male head of the clamping block and the female head of the clamping block to come together to clamp the aluminum block welding head.

[0011] Preferably, the male clamping head and the female clamping head have clamping surfaces on their opposite inner sides that are adapted to the shape of the aluminum block welding head.

[0012] Preferably, the locking accessory II is a vertically locking screw II, which secures the torque clamp to the upper surface of the aluminum block welding head.

[0013] Preferably, the inner walls of the opposite inner sides of the male clamp head and the female clamp head are provided with an anti-slip structure, which is an anti-slip texture or an anti-slip coating.

[0014] In summary, this utility model has the following beneficial effects: by fixing the base to press the cover plate assembly from the bottom, and by clamping the male and female clamping heads of the aluminum block welded to the pole from the side, complete constraint is achieved on the cover plate assembly under test, effectively preventing slippage, shaking or torsion during fatigue testing, ensuring that the applied force is purely axial thrust, eliminating interference factors such as lateral force or bending moment, and making the test results more accurate and reliable; the mechanical fixing method of the locking accessory makes the clamping and disassembly process simple and fast, greatly improving testing efficiency and facilitating operation by experimental personnel.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the fatigue testing fixture for the circular battery cover plate terminal post according to an embodiment of the present invention. Figure 1 ;

[0017] Figure 2 This is a three-dimensional view of the fatigue testing fixture for the circular battery cover plate terminal post according to an embodiment of the present invention. Figure 2 ;

[0018] Figure 3 This is a perspective view of the fatigue testing fixture for the circular battery cover plate terminal post according to an embodiment of the present utility model;

[0019] Figure 4 This is an exploded view of the fatigue testing fixture for the circular battery cover plate terminal post according to an embodiment of the present invention.

[0020] In the picture:

[0021] 1. Male clamping block; 2. Female clamping block; 3. Cover plate assembly; 4. Aluminum block welding head; 5. Torque clamping block; 6. Fixed base; 7. Locking screw I; 8. Locking screw II; 9. Locking screw III. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] like Figure 1-4 As shown in this embodiment, a fatigue testing fixture for a circular battery cover electrode post includes:

[0024] The male clamping head 1 and the female clamping head 2 are used to clamp the cover plate assembly 3 and the aluminum block welding head 4 welded on the pole of the cover plate assembly 3 and are fixed by locking accessory I. The upper end of the aluminum block welding head 4 is fixed with a torque clamping block 5 by locking accessory II. The torque clamping block 5 is used to connect with the actuator of the fatigue testing machine.

[0025] By using the locking accessory I, the male clamp 1 and the female clamp 2 can firmly hold the aluminum block welding head 4, thereby fixing the upper end of the pole post.

[0026] The fixed base 6 has a cavity extending downwards at the middle of its upper end that matches the outer contour of the cover plate assembly 3, and the cover plate assembly 3 is pressed from the bottom along the Z-axis direction by the locking attachment Ⅲ.

[0027] Thus, by fixing the base 6 to press the cover plate assembly 3 from the bottom, and clamping the male head 1 and female head 2 from the side to hold the aluminum block weld head 4 welded to the pole post, the cover plate assembly 3 is completely constrained in the X, Y, and Z directions, preventing any movement or shaking during the test. This effectively prevents slippage, shaking, or torsion during the fatigue test, ensuring that the applied force is purely axial thrust, eliminating interference factors such as lateral force or bending moment, and making the test results more accurate and reliable. The mechanical fixing method using locking accessories makes the clamping and disassembly process simple and fast, greatly improving the testing efficiency and facilitating the operation of the experimental personnel.

[0028] Furthermore, locking accessory Ⅲ is a locking screw Ⅲ9 that is locked along the Z-axis direction. The locking screw Ⅲ9 passes through the fixed base 6 and applies pressure to the periphery of the cover plate assembly 3. Locking accessory Ⅰ is a locking screw Ⅰ7 that is locked in the horizontal direction. By tightening the locking screw Ⅰ7, the male head 1 and the female head 2 of the clamping block are driven to come together to clamp the aluminum block welding head 4. Locking accessory Ⅱ is a locking screw Ⅱ8 that is locked in the vertical direction. The locking screw Ⅱ8 secures the torque clamping block 5 to the upper surface of the aluminum block welding head 4.

[0029] Thus, the mechanical fixing method using screws simplifies and speeds up the clamping and disassembly process, greatly improving testing efficiency and facilitating operation for laboratory personnel. The fixed base 6 with its precision-machined cavity and the adjustable locking male and female clamping heads 1 and 2 ensure that the axis of the pole is highly aligned with the force-applying axis of the testing machine's actuator, guaranteeing precise application of axial thrust to the pole and avoiding testing errors caused by eccentric loads.

[0030] Furthermore, the male clamping head 1 and the female clamping head 2 have clamping surfaces on their respective inner sides that are adapted to the shape of the aluminum block welding head 4. Preferably, the inner walls of the respective inner sides of the male clamping head 1 and the female clamping head 2 are provided with an anti-slip structure, which is an anti-slip texture or an anti-slip coating. This increases the friction with the aluminum block welding head 4 and prevents relative sliding during testing.

[0031] It should be noted that by changing the positioning cavity at the center of the fixed base 6, it can accommodate circular battery cover assemblies 3 of different diameters; the dimensions of the male clamping head 1 and the female clamping head 2 can also be changed according to the specifications of the aluminum block welding head 4 on the pole post, thus enhancing the versatility of the tooling.

[0032] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fatigue testing fixture for a circular battery cover electrode post, characterized in that, include: The clamping block male head and the clamping block female head are used to clamp the cover plate assembly and the aluminum block welding head welded on the pole of the cover plate assembly and are fixed by locking accessory I. The upper end of the aluminum block welding head is fixed with a torque clamping block by locking accessory II. The torque clamping block is used to connect with the actuator of the fatigue testing machine. The fixed base has a downwardly extending cavity at the upper center that matches the outer contour of the cover plate assembly, and the cover plate assembly is pressed tightly from the bottom along the Z-axis direction by locking attachment III.

2. The fatigue testing fixture for the circular battery cover plate terminal post according to claim 1, characterized in that, The locking accessory III is a locking screw III that is tightened along the Z-axis direction. The locking screw III passes through the fixed base and applies pressure to the periphery of the cover plate assembly.

3. The fatigue testing fixture for the circular battery cover plate terminal post according to claim 1, characterized in that, The locking accessory I is a horizontally locking screw I. By tightening the locking screw I, the male head of the clamping block and the female head of the clamping block are driven to come together to clamp the aluminum block welding head.

4. The fatigue testing fixture for the circular battery cover plate terminal post according to claim 3, characterized in that, The male and female clamping heads are provided with clamping surfaces on their inner sides that are adapted to the shape of the aluminum block welding head.

5. The fatigue testing fixture for the circular battery cover plate terminal post according to claim 1, characterized in that, The locking accessory II is a vertically locking screw II, which secures the torque clamp to the upper surface of the aluminum block welding head.

6. The fatigue testing fixture for the circular battery cover plate terminal post according to claim 1, characterized in that, The inner walls of the male clamp head and the female clamp head on opposite sides are provided with an anti-slip structure, which is an anti-slip texture or an anti-slip coating.

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