Battery cell cover plate dynamic force test tool

Abstract

The utility model provides a dynamic force testing tool for a battery cell cover, which relates to the technical field of force testing tools and comprises a workbench, a clamp substrate for placing a battery cell cover plate, a fixing clamp and a load conduction mechanism, and the clamp substrate and the load conduction mechanism are both mounted on the workbench. The fixed clamp is mounted on the clamp substrate and is matched with the clamp substrate to clamp the battery cell cover plate, and the load conduction mechanism is connected with the battery cell cover plate and applies force in the horizontal and vertical directions for testing; according to the utility model, forces in different directions can be tested on battery cell cover plates with different sizes, the maximum stress state of the battery cell cover plate can be estimated, the bearable pressure of an internal battery cell can be known in advance, and the risk degree that the battery cell is extruded can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of force testing tooling, in particular to a dynamic force testing tooling for a battery cover. Background Art

[0002] Lithium batteries are widely used due to their high energy density, no memory effect, long single-cell cycle, high efficiency, cleanliness and pollution-free. In recent years, lithium batteries have continued to develop and products have been continuously iterated, especially square shell batteries, which have been favored by all walks of life for their good mechanical strength, simple lamination and assembly process, and high energy density.

[0003] In a module or battery pack, a single cell is connected in series or in parallel by welding an aluminum or copper connector to the cell cover terminal. The connection strength between the cover terminal and the connector is crucial. At present, the test of terminal force under simulated actual working conditions is mostly completed at the cell end, and the dynamic force test of the cover alone is not arranged in advance; the force bearing strength of the cover terminal is the prerequisite for passing the cell end test. If it can be estimated in advance, it can effectively prevent risks.

[0004] In order to solve the above problems, the present invention provides a dynamic force testing tool for a battery cover, which can effectively fix battery cover of different sizes and realize the dynamic force testing requirements of the cover terminals in different xyz directions. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a dynamic force testing tool for a battery cover plate to perform directional tests on battery cover plates of different sizes.

[0006] Based on the technical problems existing in the background technology, the utility model proposes a dynamic force testing tool for a battery cover, including a workbench, a fixture substrate for placing the battery cover, a fixing fixture and a load transmission mechanism, the fixture substrate and the load transmission mechanism are both installed on the workbench, the fixing fixture is installed on the fixture substrate and cooperates with the fixture substrate to clamp the battery cover, and the load transmission mechanism is connected to the battery cover and applies horizontal and vertical forces for testing.

[0007] Furthermore, two adjacent edges of the fixture substrate are provided with slide grooves, and slide bars are slidably mounted on the slide grooves of the two adjacent edges. The two slide bars and the two edges can clamp the length and width of the battery cover in the horizontal direction.

[0008] Furthermore, the length of the two sliding bars is smaller than the side length of the fixture substrate, and the two sliding bars do not conflict with each other.

[0009] Furthermore, it also includes a pressing mechanism, which is slidably mounted on the clamp substrate and clamps the cell cover plate in a vertical direction together with the clamp substrate.

[0010] Furthermore, the pressing mechanism includes two triangular plates, which are respectively installed vertically and slidably at the diagonals above the fixture base plate, and the right angles of the triangular plates correspond to the right angles of the corners of the fixture base plate.

[0011] Furthermore, the pressing mechanism further comprises an adjusting mechanism, which is mounted on the fixture base plate and can vertically adjust the position of the triangular plate.

[0012] Furthermore, the cell cover plate is provided with a mounting groove, a connecting plate is inserted into the mounting groove, and the load conducting mechanism is connected to the cell cover plate via the connecting plate.

[0013] Compared with the prior art, the battery cover dynamic force test fixture proposed by the utility model adopts the above technical solution and achieves the following technical effects:

[0014] The utility model can test the forces in different directions on battery cover plates of different sizes, estimate the maximum stress state of the battery cover plate, know in advance the pressure that the internal battery cell can withstand, and prevent the risk of the battery cell being squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The three-dimensional structure of the utility model Figure 1 ;

[0016] Figure 2 The three-dimensional structure of the utility model Figure 2 ;

[0017] Figure 3 It is a left-side cross-sectional structural diagram of the utility model.

[0018] In the figure: 5, battery cell cover; 6, fixture base plate; 1, fixing fixture; 61, slide groove; 7, slide rod; 8, pressing mechanism; 81, triangular plate; 51, mounting groove; 2, connecting piece. DETAILED DESCRIPTION

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] Example

[0022] Please refer to Figure 1-3 The utility model proposes a dynamic force test tool for a cell cover plate 5, including a dynamic force test tool for a cell cover plate 5, including a workbench, a fixture substrate 6 for placing the cell cover plate 5, a fixing fixture 1 and a load conduction mechanism, the fixture substrate 6 and the load conduction mechanism are both installed on the workbench, the fixing fixture 1 is installed on the fixture substrate 6 and cooperates with the fixture substrate 6 to clamp the cell cover plate 5, and the load conduction mechanism is connected to the cell cover plate 5 and applies horizontal and vertical forces for testing. The fixture substrate 6 can provide a placement position for the cell cover plate 5, and the fixture substrate 6 can be clamped under the action of the fixing fixture 1, and is suitable for fixing cell cover plates 5 of various sizes. The fixing fixture 1 can fix the cell cover plate 5 in the horizontal and vertical directions, and then the load conduction mechanism is used to move the cell cover plate 5 for horizontal and vertical testing.

[0023] In a specific embodiment, refer to Figure 1-2 The two adjacent sides of the fixture substrate 6 are provided with a slide groove 61, and the slide grooves 61 of the two adjacent sides are slidably mounted with a slide bar 7, and the two slide bars 7 and the two sides can clamp the length and width of the battery cover plate 5 in the horizontal direction. The two slide bars 7 are adjacent and arranged in an L shape, and when sliding, they will cooperate with the two adjacent sides of the fixture substrate 6 to clamp the battery cover plate 5.

[0024] In a specific embodiment, refer to Figure 1 The length of the two slide bars 7 is less than the side length of the fixture base plate 6, and the two slide bars 7 do not interfere with each other. The two slide bars 7 need to avoid mutual influence after sliding, which will reduce the activity space and the scope of use.

[0025] In a specific embodiment, refer to Figure 1-2 , and further includes a pressing mechanism 8, which is slidably mounted on the fixture substrate 6 and clamps the cell cover plate 5 in the vertical direction with the fixture substrate 6. The pressing mechanism 8 can clamp the cell cover plate 5 in the vertical direction to prevent the cell cover plate 5 from being fixed unstably.

[0026] In a specific embodiment, refer to Figure 1-2 The pressing mechanism 8 includes two triangular plates 81, which are respectively installed vertically and slidably at the diagonal corners above the fixture substrate 6, and the right angles of the triangular plates 81 correspond to the right angles of the corners of the fixture substrate 6. Space needs to be left above the cell cover plate 5 to facilitate the connection of the load transmission mechanism, so two triangular plates 81 are used to vertically limit the two non-adjacent corners of the cell cover plate 5 to prevent them from falling off.

[0027] In a specific embodiment, refer to Figure 1-2 The pressing mechanism 8 also includes an adjusting mechanism, which is mounted on the fixture substrate 6 and can vertically adjust the position of the triangular plate 81. The adjusting mechanism can adjust the vertical position of the triangular plate 81 to accommodate the installation of battery cover plates 5 of different thicknesses.

[0028] In a specific embodiment, refer to Figure 1-2 The cell cover plate 5 is provided with a mounting groove 51, in which a connector 2 is inserted, and the load transmission mechanism is connected to the cell cover plate 5 through the connector 2 and applies pressure or thrust to perform the test.

[0029] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A dynamic force test tool for a battery cover, characterized in that: The invention comprises a workbench, a fixture substrate (6) for placing a cell cover plate (5), a fixing fixture (1) and a load transmission mechanism, wherein the fixture substrate (6) and the load transmission mechanism are both mounted on the workbench, the fixing fixture (1) is mounted on the fixture substrate (6) and cooperates with the fixture substrate (6) to clamp the cell cover plate (5), and the load transmission mechanism is connected to the cell cover plate (5) and applies forces in horizontal and vertical directions for testing.

2. The battery cover dynamic force testing tool according to claim 1, characterized in that: The two adjacent surrounding edges of the clamp substrate (6) are each provided with a slide groove (61), and a slide rod (7) is slidably mounted on the slide grooves (61) of the two adjacent surrounding edges. The two slide rods (7) and the two surrounding edges can clamp the length and width of the battery cover plate (5) in the horizontal direction.

3. The battery cover dynamic force testing tool according to claim 2, characterized in that: The length of the two sliding bars (7) is smaller than the side length of the clamp base plate (6), and the two sliding bars (7) do not conflict with each other.

4. The battery cover dynamic force testing tool according to claim 1, characterized in that: It also comprises a pressing mechanism (8), which is slidably mounted on the clamp substrate (6) and clamps the cell cover plate (5) in a vertical direction together with the clamp substrate (6).

5. The battery cover dynamic force testing tool according to claim 4, characterized in that: The pressing mechanism (8) comprises two triangular plates (81), which are respectively installed vertically and slidably at opposite corners above the clamp base plate (6), and the right angles of the triangular plates (81) correspond to the right angles of the corners of the clamp base plate (6).

6. The battery cover dynamic force testing tool according to claim 4, characterized in that: The pressing mechanism (8) further comprises an adjusting mechanism, which is mounted on the fixture base plate (6) and can vertically adjust the position of the triangular plate (81).

7. The battery cover dynamic force testing tool according to claim 1, characterized in that: Said The cell cover plate (5) is provided with a mounting groove (51), and a connecting piece (2) is inserted into the mounting groove (51). The load transmission mechanism is connected to the battery cell cover plate (5) via a connecting piece (2).

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