Peeling force testing device for battery module
By designing an adjustable clamping member and a peel force testing device with a center of gravity adjustment structure, the problem of unstable clamping of the module cover plate is solved, and the accuracy and accuracy of the busbar peel force test is improved. It is suitable for module cover plates of different sizes.
Patent Information
- Application Number
- CN202422411896.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing peeling test devices cannot effectively fix the module cover plate, resulting in unstable clamping and sliding problems, affecting the accuracy of the bus stripping force test results.
A peeling force testing device including a first clamping member and a movably mounted second clamping member is designed. The tension force at a preset angle is applied by a tensioning machine to ensure that the busbar peeling force is perpendicular to the module cover plate, and the test accuracy is improved by using an adjustable clamping structure and center of gravity adjustment member.
The stable clamping of module covers of different sizes is achieved, ensuring the accuracy and accuracy of the busbar peeling force test results, reducing the shaking of the battery module, and improving the testing ability of welding strength.
Smart Images
Figure CN223272307U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of battery production technology, and in particular to a peeling force testing device for a battery module. Background Art
[0002] In recent years, as the energy and environmental crises have become increasingly serious, the development of new energy vehicles has become an inevitable trend. Batteries are the core energy source of new energy electric vehicles, and their safety and working reliability directly affect the safety of new energy electric vehicles.
[0003] In the production process of battery modules, bus welding is one of the key processes in battery module production. If products with poor welding are put into use, it will cause excessively large internal resistance, increased temperature, and even welding peeling and sparking during use, seriously affecting the safety performance of the battery. Therefore, the bus peeling force is tested, but the existing peeling test device cannot effectively fix the module cover, resulting in the module cover often having problems such as unstable clamping and sliding during the bus peeling force measurement process, or during the bus peeling force measurement process, as the bus deforms, the tension applied to the bus is difficult to maintain perpendicular to the module cover, resulting in the peeling force gradually turning into shear force, affecting the accuracy of the bus peeling force test results, and unable to effectively feedback the true strength of the bus welding.
[0004] In view of this, this application is filed. Utility Model Content
[0005] The present application provides a peeling force testing device for a battery module, which is used to solve the problem of how to improve the accuracy of busbar peeling force test results.
[0006] The present application provides a peeling force testing device for a battery module, wherein the battery module includes a busbar and a module cover arranged above and below, and the peeling force testing device includes:
[0007] a first clamping member;
[0008] a second clamping member, movably mounted on the first clamping member, wherein the module cover is clamped between the first clamping member and the second clamping member;
[0009] The tensile testing machine is used to apply tension to the busbar to peel it at a preset angle and drive the busbar to move along a first direction. When the angle between the tension and the first direction is less than a preset angle, the second clamping member can move toward the first clamping member.
[0010] In some embodiments, the first clamping member has a first slide groove that is open on one side toward the second clamping member, the second clamping member can be movably arranged at the bottom of the first slide groove and seal the open end, and the module cover is arranged in the first slide groove.
[0011] In some embodiments, the first clamping member is provided with a positioning column extending horizontally outward from the side wall of the first slide groove, and the second clamping member is provided with a positioning hole for the positioning column to pass through, so that the second clamping member can move toward the first clamping member along the first direction.
[0012] In some embodiments, the first slide groove is a stepped groove, the first slide groove includes a first groove and a second groove arranged alternately from top to bottom, the module cover is arranged in the first groove, and the positioning column extends horizontally outward from the side wall of the second groove.
[0013] In some embodiments, the first groove is a C-shaped groove; and / or the first groove is an L-shaped groove.
[0014] In some embodiments, the peel force testing device further comprises:
[0015] A center of gravity adjusting member is movably mounted on the bottom of the first clamping member.
[0016] In some embodiments, a second sliding groove that is open downward and recessed upward is provided at the bottom of the first clamping member, and the length direction of the second sliding groove extends along the second direction. The center of gravity adjustment member is inserted into the second sliding groove and can move along the second direction.
[0017] In some embodiments, the second sliding groove is a C-shaped groove, and the center of gravity adjustment component is an I-shaped sliding block that matches the C-shaped groove.
[0018] In some embodiments, a limiting column for limiting the center of gravity adjusting member is provided in the second sliding groove, and at least two limiting columns are provided at two ends of the center of gravity adjusting member at intervals along the second direction.
[0019] In some embodiments, the top of the center of gravity adjusting member is connected to the bottom of the first clamping member, and the bottom of the center of gravity adjusting member is connected to the body of the tensile machine.
[0020] After adopting the above technical solution, the present application has the following beneficial effects compared with the prior art.
[0021] 1. In the peeling force testing device for battery modules in the present application, the second clamping member can be movably mounted on the first clamping member, so that the distance between the first clamping member and the second clamping member can be adjusted, thereby being able to be adjusted according to the width of the module cover to achieve clamping of module covers of different sizes.
[0022] 2. In the peeling force testing device for battery modules in the present application, when the angle between the pulling force and the first direction is less than a preset angle, the second clamping member can move toward the first clamping member to ensure that the direction of action of the bus peeling force is perpendicular to the module cover, thereby improving the accuracy of the bus peeling force test results. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 1 is a schematic structural diagram of a peeling force testing device according to an embodiment of the present application;
[0024] Figure 2 This is a front view of a peeling force testing device in an embodiment of the present application;
[0025] Figure 3 is a side view of a peel force testing device in an embodiment of the present application;
[0026] Figure 4 This is an exploded view of a peeling force testing device in an embodiment of the present application.
[0027] In the figure: 100, peeling force testing device; 110, first clamping member; 111, first slide; 1111, first groove; 1112, second groove; 112, positioning column; 113, second slide; 114, limiting column; 120, second clamping member; 121, positioning hole; 130, center of gravity adjustment member; 131, connecting hole; 200, battery module; 210, bus; 220, module cover; 230, pole. DETAILED DESCRIPTION
[0028] The following will clearly and completely describe the technical solutions of this application in conjunction with the embodiments. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0029] In the embodiment of the present application, a peeling force testing device 100 for a battery module 200 is provided. For the specific structure of the peeling force testing device 100, please refer to Figures 1 to 4, which includes a first clamping member 110, a second clamping member 120 and a tensile machine, wherein the second clamping member 120 can be movably mounted on the first clamping member 110, and the module cover 220 is clamped between the first clamping member 110 and the second clamping member 120; the traction end of the tensile machine is connected to the bus 210, and is used to apply tension to the bus 210 to peel it off at a preset angle, and drive the bus 210 to move along the first direction D1. When the angle between the tension and the first direction D1 is less than the preset angle, the second clamping member 120 can move toward the first clamping member 110, so that the first clamping member 110 and the second clamping member 120 clamp the module cover 220 to prevent the battery module 200 from detaching from the first clamping member 110 and the second clamping member 120.
[0030] According to the peel force testing device 100 for battery module 200 of the present application, the second clamping member 120 is movably mounted on the first clamping member 110, allowing for an adjustable distance between the first clamping member 110 and the second clamping member 120. This allows for adjustment based on the width of the module cover 220, enabling clamping of module covers 220 of varying sizes. When the angle between the pulling force and the first direction D1 is less than a predetermined angle, the second clamping member 120 can move toward the first clamping member 110, ensuring that the direction of the peel force acting on the busbar 210 is perpendicular to the module cover 220, thereby improving the accuracy of the busbar 210 peel force test results.
[0031] like Figures 1 to 3 As shown, the bus 210 is placed above the first clamping member 110 and the second clamping member 120. The first clamping member 110 and the second clamping member 120 can support the bus 210. During the peeling force test of the bus 210, the shaking degree of the battery module 200 is reduced, and the clamping effect of the first clamping member 110 and the second clamping member 120 is enhanced, which is conducive to improving the accuracy of the peeling force test of the bus 210.
[0032] like Figure 1 and Figure 2 As shown, the busbar 210 and the module cover 220 are electrically connected via the pole 230, and the pole 230 is fixedly connected to the busbar 210 by welding. The welding cost is low, and the busbar 210 and the module cover 220 after welding are not easy to loosen or disconnect, and the welding connection strength is high.
[0033] like Figure 1 、 Figure 2 and Figure 4As shown, the first direction D1 is approximately perpendicular to the thickness direction of the busbar 210. The first direction D1 can be approximately parallel to the length direction of the busbar 210. Of course, the first direction D1 can also be approximately parallel to the width direction of the busbar 210. For ease of description, in this embodiment, the first direction D1 is approximately parallel to the width direction of the busbar 210. A tensile force is applied to the busbar 210 using a tensile testing machine to measure the peel force between the busbar 210 and the module cover 220, that is, the maximum force required to peel the busbar 210 per unit width from the contact surface between the busbar 210 and the terminal 230.
[0034] Usually the preset angle during peeling is 90° or 180°, for example, Figures 1 to 4 As shown, the traction end of the tensile testing machine is connected to the bus 210, and the tensile testing machine is used to apply tension to the bus 210 for 90° peeling, and drive the bus 210 to move along the first direction D1. During the peeling force measurement of the bus 210, when the angle between the tension and the first direction D1 is less than 90°, the tension is decomposed into a vertical upward peeling force and a thrust set in the same direction as the first direction D1. The thrust will act on the second clamping member 120, pushing the second clamping member 120 to move along the first direction D1 toward the first clamping member 110, which can better clamp the module cover 220 and prevent the battery module 200 from detaching from the peeling force testing device 100, thereby ensuring that the tension is perpendicular to the plane where the top cover is located, and ensuring the accuracy of the bus 210 peeling force test results.
[0035] like Figure 1 、 Figure 2 and Figure 4 As shown, the first clamping member 110 has a first slide groove 111 which is open on one side toward the second clamping member 120. The second clamping member 120 can be movably arranged at the bottom of the first slide groove 111 and seal the open end. The module cover 220 is arranged in the first slide groove 111, so that the second clamping member 120 can slide along the bottom of the first slide groove 111, so that the second clamping member 120 can be movably installed on the first clamp, and the first clamping member 110 and the second clamping member 120 construct a top-open, width-adjustable accommodating cavity, which is used to accommodate the module cover 220. The pole 230 is clamped at the top snap-in of the accommodating cavity, which can avoid the battery module 200 from shaking, sliding and other problems and affecting the accuracy of the bus 210 peeling force test results.
[0036] The first clamping member 110 and the second clamping member 120 construct a accommodating cavity with adjustable width, so that the accommodating cavity can adapt to module cover plates 220 of different widths, thereby clamping module cover plates 220 of different sizes, with high flexibility and good compatibility. For example, the distance between the first clamping member 110 and the second clamping member 120 is in the range of 8mm to 40mm, so that the first clamping member 110 and the second clamping member 120 can clamp module cover plates 220 with a width in the range of 8mm to 40mm.
[0037] like Figure 1 、 Figure 2 and Figure 4 As shown, the first clamping member 110 is provided with a positioning column 112 extending horizontally outward from the side wall of the first slide groove 111, and the second clamping member 120 is provided with a positioning hole 121 for the positioning column 112 to pass through, so that the second clamping member 120 can move toward the first clamping member 110 along the first direction D1, and the second clamping member 120 is mounted on the horizontally arranged positioning column 112 to ensure that the second clamping member 120 can move smoothly horizontally along the first direction D1.
[0038] like Figure 1 and Figure 4 As shown, at least two positioning posts 112 are spaced apart along a third direction D3 perpendicular to the first direction D1, and a plurality of positioning holes 121 are provided on the second clamping member 120 for corresponding positioning posts 112 to pass through, so that the plurality of positioning posts 112 are socketed with the second clamping member 120, so that the second clamping member 120 can move more smoothly along the first direction D1 toward the first clamping member 110.
[0039] like Figure 1 and Figure 4 As shown, the third direction D3 is substantially perpendicular to the thickness direction of the busbar 210. The third direction D3 may be substantially parallel to the length direction of the busbar 210. Of course, the third direction D3 may also be substantially parallel to the width direction of the busbar 210. For ease of description, in this embodiment, the third direction D3 is substantially parallel to the length direction of the busbar 210.
[0040] like Figure 1 、 Figure 2 and Figure 4As shown, the first slide groove 111 is a stepped groove, and the first slide groove 111 includes a first groove 1111 and a second groove 1112 staggered from top to bottom. The module cover 220 is arranged in the first groove 1111, and the positioning column 112 extends horizontally outward from the side wall of the second groove 1112. Through the first groove 1111 and the second groove 1112 staggered up and down, the width of the first groove 1111 is greater than the width of the second groove 1112, so that the first clamping member 110 and the second clamping member 120 can clamp the module cover 220 with a larger width, thereby enhancing the testing capability of the peeling force testing device 100.
[0041] like Figure 2 and Figure 4 As shown, the first groove 1111 is a C-shaped groove, and the second groove 1111 is an L-shaped groove. The second clamping member 120 is movably arranged at the bottom of the L-shaped groove and blocks the open ends of the C-shaped groove and the L-shaped groove. The module cover 220 is arranged in the C-shaped groove, so that the second clamping member 120 can slide along the bottom of the L-shaped groove, so that the second clamping member 120 can be movably installed on the first clamp, and by sliding the second clamping member 120, the first clamping member 110 and the second clamp clamp the pole 230, thereby enhancing the clamping effect of the clamping structure.
[0042] like Figures 1 to 4 As shown, the peeling force testing device 100 also includes a center of gravity adjusting member 130, which is movably mounted on the bottom of the first clamping member 110. By cooperating with the first clamping member 110, the center of gravity adjusting member 130 can complete automatic center of gravity balance adjustment or manual center of gravity balance adjustment during the loading of the battery module 200 and the peeling force measurement of the bus 210. It has a simple structure, flexible adjustment, easy processing, and strong applicability.
[0043] like Figure 1 、 Figure 3 and Figure 4 As shown, the bottom of the first clamping member 110 is provided with a second slide groove 113 which is open downward and recessed upward. The length direction of the second slide groove 113 extends along the second direction D2. The center of gravity adjustment member 130 is inserted into the second slide groove 113 and can move along the second direction D2, so that the center of gravity adjustment member 130 and the first clamping member 110 can slide together to perform automatic center of gravity balance adjustment or manual center of gravity balance adjustment, thereby preventing the first clamping member 110, the second clamping member 120 and the center of gravity adjustment member 130 from forming a clamping structure that shakes and causes the bus 210 to peel off.
[0044] like Figure 1 、 Figure 2 and Figure 4As shown, the second direction D2 is substantially perpendicular to the thickness direction of the busbar 210. The second direction D2 may be substantially parallel to the length direction of the busbar 210. Of course, the second direction D2 may also be substantially parallel to the width direction of the busbar 210. For ease of description, in this embodiment, the second direction D2 is substantially parallel to the length direction of the busbar 210. Furthermore, the second direction D2 is the same as or opposite to the first direction D1.
[0045] like Figure 1 、 Figure 3 and Figure 4 As shown, the second sliding groove 113 is a C-shaped groove, and the center of gravity adjustment member 130 is an I-shaped slider that matches the C-shaped groove, thereby achieving a sliding connection between the center of gravity adjustment member 130 and the first clamping member 110.
[0046] like Figure 1 、 Figure 3 and Figure 4 As shown, a limiting column 114 for limiting the center of gravity adjustment component 130 is provided in the second slide groove 113, and at least two limiting columns 114 are arranged at both ends of the center of gravity adjustment component 130 at intervals along the second direction D2 to prevent the center of gravity adjustment component 130 from detaching from the second slide groove 113 during the sliding process along the second direction D2.
[0047] like Figure 1 、 Figure 2 and Figure 4 As shown, the top of the center of gravity adjusting member 130 is connected to the bottom of the first clamping member 110, and the bottom of the center of gravity adjusting member 130 is connected to the body of the tensile testing machine. For example, a connecting hole 131 for a fastener to pass through is provided at the bottom of the center of gravity adjusting member 130. The center of gravity adjusting member 130 is fixedly connected to the body of the tensile testing machine through the fastener. The center of gravity adjusting member 130 is fixed to prevent it from shaking during the peeling force measurement of the bus 210 and affecting the clamping effect of the first clamping member 110 and the second clamping member 120, thereby improving the accuracy of the peeling force test results of the bus 210.
[0048] The battery module 200 package in the present application is applied to an energy storage device, which may be a vehicle, an operating machine, or other device with a battery replacement function.
[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.
[0050] Furthermore, the terms "above" and "below" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "above" or "below" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0051] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.
[0052] In this application, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0053] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A peeling force testing device for a battery module, wherein the battery module comprises a busbar and a module cover arranged above and below, characterized in that: The peel force testing device comprises: a first clamping member; a second clamping member, movably mounted on the first clamping member, wherein the module cover is clamped between the first clamping member and the second clamping member; The tensile testing machine is used to apply tension to the busbar to peel it at a preset angle and drive the busbar to move along a first direction. When the angle between the tension and the first direction is less than a preset angle, the second clamping member can move toward the first clamping member.
2. The peeling force testing device for battery modules according to claim 1, characterized in that: The first clamping member has a first sliding groove open on one side toward the second clamping member. The second clamping member is movably arranged at the bottom of the first sliding groove and blocks the open end. The module cover is arranged in the first sliding groove.
3. The peeling force testing device for battery modules according to claim 2, characterized in that: The first clamping member is provided with a positioning column extending horizontally outward from the side wall of the first sliding groove, and the second clamping member is provided with a positioning hole for the positioning column to pass through, so that the second clamping member can move toward the first clamping member along the first direction.
4. The peeling force testing device for battery modules according to claim 3, characterized in that: The first chute is a stepped chute, comprising a first groove and a second groove alternately arranged from top to bottom, the module cover is arranged in the first groove, and the positioning column extends horizontally outward from the side wall of the second groove.
5. The peeling force testing device for battery modules according to claim 4, characterized in that: The first groove is a C-shaped groove; and / or the first groove is an L-shaped groove.
6. The peeling force testing device for a battery module according to any one of claims 1 to 5, characterized in that: The peel force testing device further comprises: A center of gravity adjusting member is movably mounted on the bottom of the first clamping member.
7. The peeling force testing device for battery modules according to claim 6, characterized in that: A second sliding groove that is open downward and recessed upward is provided at the bottom of the first clamping member. The length direction of the second sliding groove extends along the second direction. The center of gravity adjustment member is inserted into the second sliding groove and can move along the second direction.
8. The peeling force testing device for battery modules according to claim 7, characterized in that: The second sliding groove is a C-shaped groove, and the center of gravity adjusting component is an I-shaped sliding block matched with the C-shaped groove.
9. The peeling force testing device for battery modules according to claim 7, characterized in that: A limiting column for limiting the center of gravity adjusting component is provided in the second sliding groove, and at least two limiting columns are provided at intervals along the second direction at both ends of the center of gravity adjusting component.
10. The peeling force testing device for battery modules according to claim 6, characterized in that: The top of the center of gravity adjusting member is connected to the bottom of the first clamping member, and the bottom of the center of gravity adjusting member is connected to the body of the tensile machine.