Battery pack vibration test tool and equipment

Abstract

The utility model relates to the technical field of battery production, in particular to a battery pack vibration test tool and device.The battery pack vibration test tool comprises first limiting parts, second limiting parts and third limiting parts, the first limiting parts are arranged on a vibration table at intervals and used for getting close to a battery pack in the first direction to abut against the two opposite sides of the battery pack, and the second limiting parts are arranged on the vibration table at intervals; the first direction is the width direction of the vibration table; the second limiting pieces are arranged on the vibration table at intervals and used for getting close to the battery pack in the second direction so as to abut against the two opposite ends of the battery pack, and the second direction is the length direction of the vibration table; the third limiting piece is arranged on the vibration table and used for abutting against the side, away from the vibration table, of the battery pack. The displacement of the battery pack in the width, length and height directions of the vibration table is limited through the first limiting piece, the second limiting piece and the third limiting piece, it is guaranteed that the battery pack cannot be greatly deformed in the vibration process, the fatigue phenomenon of all parts is relieved, and frequent shaking of a battery body in the test is avoided.

Description

Technical Field

[0001] The present application relates to the field of battery production technology, and in particular to battery pack vibration test tooling and equipment. Background Art

[0002] Nowadays, as the recognition and ownership of energy storage market increases year by year and maintains rapid growth, the structural strength of energy storage battery packs as high energy density energy storage components cannot be ignored. Energy storage battery packs are subjected to various vibration loads during transportation. When the battery pack reliability fails during vibration, especially when key structural parts fail, such as large-scale debonding, loosening and breaking of bolts, and cracking of structural parts, it will cause the battery cells or modules to move and be squeezed, causing accelerated damage to related components, resulting in leakage, battery performance degradation, battery management system failure, power outages, or fire and explosion accidents.

[0003] The vibration test mainly simulates the structural deformation and damage of the energy storage battery pack under different transportation conditions, and the random vibration test is a mandatory test standard for testing its structural vibration fatigue durability performance. However, in the random vibration test, there is a phenomenon of fatigue failure of structural parts due to frequent shaking of the battery cell. Therefore, the random vibration test should try to avoid frequent shaking of the body to obtain a more realistic vibration fatigue durability performance of the battery pack. Utility Model Content

[0004] The present application provides a battery pack vibration test tool and equipment to solve the problem of fatigue failure of structural parts caused by frequent shaking of battery cells in vibration tests in the prior art.

[0005] On the one hand, the present application provides a battery pack vibration test tool, including:

[0006] A first stopper is arranged on the vibration table at intervals and is used to approach the battery pack along a first direction to abut against two opposite sides of the battery pack, wherein the first direction is a width direction of the vibration table;

[0007] A second stopper, arranged on the vibration table at intervals, and used to approach the battery pack along a second direction to abut against opposite ends of the battery pack, wherein the second direction is a length direction of the vibration table;

[0008] The third limiting member is arranged on the vibration platform and is used for abutting against a side of the battery pack away from the vibration platform.

[0009] In a possible design, the first limiting member includes:

[0010] The main body is detachably connected to the vibration table, and is provided with a first mounting hole, the axis of the first mounting hole is parallel to the height direction of the vibration table, and a first abutting surface is formed on one side of the main body, and the first abutting surface is perpendicular to the first direction;

[0011] The convex block is arranged on the first abutting surface.

[0012] In a possible design, an outer wall of the protrusion is formed with a first plane and a second plane that are oppositely arranged, and the first plane and the second plane are perpendicular to the height direction of the vibration table.

[0013] In a possible design, an end of the protrusion away from the first abutting surface is an introduction end, and a guiding inclined surface is formed between the introduction end and the outer wall of the protrusion.

[0014] In a possible design, the third limiting member includes:

[0015] A beam seat is detachably connected to the vibration table, a second mounting hole is provided on the beam seat, and an axis of the second mounting hole is parallel to the length direction of the vibration table;

[0016] The pressure beam is detachably connected to the beam seat and is used to abut against the side of the battery pack away from the vibration table.

[0017] In a possible design, the second limit member is detachably connected to the beam seat and is provided with a third mounting hole. The axis of the third mounting hole is parallel to the length direction of the vibration table. A second abutment surface is formed on one side of the second limit member, and the second abutment surface is perpendicular to the second direction.

[0018] In a possible design, the tooling further includes a support plate, which is disposed on the vibration table, and the support plate is used to abut against a side of the battery pack close to the vibration table.

[0019] In a possible design, the tooling further includes a buffer layer, which is disposed on a side of the support plate away from the vibration table and is used to abut against a side of the battery pack close to the vibration table.

[0020] In a possible design, the tooling also includes a positioning block, which is a right-angle block. A fourth mounting hole and a fifth mounting hole are provided on the positioning block. The axis of the fourth mounting hole is parallel to the length direction of the vibration table, and the axis of the fifth mounting hole is parallel to the height direction of the vibration table.

[0021] On the other hand, the present application also provides a battery pack vibration test equipment, including the battery pack vibration test tooling as described above.

[0022] The beneficial effects of this application are as follows:

[0023] The battery pack vibration test fixture of the present application is provided with first limit members at intervals on the vibration table, and the first limit members are used to approach the battery pack along the width direction of the vibration table to abut against the opposite two sides of the battery pack, thereby pressing the battery pack in the width direction of the vibration table; second limit members are provided at intervals on the vibration table, and the second limit members are used to approach the battery pack along the length direction of the vibration table to abut against the opposite two ends of the battery pack, thereby pressing the battery pack in the length direction of the vibration table; third limit members are provided on the vibration table, and the third limit members are used to abut against the side of the battery pack away from the vibration table, thereby pressing the battery pack in the height direction of the vibration table; thus, the first limit member, the second limit member and the third limit member jointly limit the displacement of the battery pack in the width, length and height directions of the vibration table, thereby ensuring that the battery pack itself will not undergo large deformation during the vibration process, reducing fatigue of various components, and effectively avoiding frequent shaking of the battery body during the test to obtain more realistic vibration fatigue durability performance of the battery pack.

[0024] The battery pack vibration test equipment provided in the present application includes the battery pack vibration test tooling in the present application, and therefore also includes all of the above-mentioned advantages of the battery pack vibration test tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the structure of a battery pack vibration test tool provided for one embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structural decomposition of a battery pack vibration test tool provided in one embodiment of the present application;

[0028] Figure 3 A front view of a first stopper of a battery pack vibration test fixture provided in one embodiment of the present application;

[0029] Figure 4 A side view of a first stopper of a battery pack vibration test fixture provided in one embodiment of the present application;

[0030] Figure 5 A side view of a third limit member of a battery pack vibration test fixture provided in accordance with an embodiment of the present application.

[0031] Reference numerals:

[0032] 100, first limiting member; 110, main body; 111, first mounting hole; 112, first abutting surface; 120, protrusion; 121, first plane; 122, second plane; 123, introduction end; 124, guiding inclined surface; 200, second limiting member; 210, second abutting surface; 220, arc surface; 230, third mounting hole; 300, third limiting member; 310, beam seat; 311, second mounting hole; 320, pressure beam; 400, support plate; 500, positioning block; 510, fourth mounting hole; 520, fifth mounting hole. DETAILED DESCRIPTION

[0033] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0034] Combine the following Figure 1-Figure 5 , describes the battery pack vibration test fixture provided in the embodiment of the present application, including a first limiter 100, a second limiter 200 and a third limiter 300, wherein the first limiter 100 is arranged on the vibration table at intervals, and the first limiter 100 is used to approach the battery pack along a first direction to abut against the opposite two sides of the battery pack, and the first direction is the width direction of the vibration table; the second limiter 200 is arranged on the vibration table at intervals, and the second limiter 200 is used to approach the battery pack along a second direction to abut against the opposite two ends of the battery pack, and the second direction is the length direction of the vibration table; the third limiter 300 is arranged on the vibration table, and is used to abut against the side of the battery pack away from the vibration table. In some embodiments, the battery pack to be tested is square, and the battery pack has six faces: front, rear left, right, top, and bottom, wherein the front side face is arranged opposite to the rear side face, the left side face is arranged opposite to the right side face, and the top side face is arranged opposite to the bottom side face. During the vibration test, the battery pack is placed on the vibration table so that the lower side is in contact with the vibration table, the third limiter 300 is located above the battery pack, and the third limiter 300 presses the upper side of the battery pack; the first limiters 100 are symmetrically arranged on the left and right sides of the battery pack, for example, four first limiters 100 are arranged on the left side of the battery pack, and four first limiters 100 are arranged on the right side of the battery pack, and the first limiters 100 respectively abut against the left and right sides of the battery pack; the second limiters 200 are symmetrically arranged on the front and rear sides of the battery pack, for example, two second limiters 200 are arranged on the front side of the battery pack, and two second limiters 200 are arranged on the rear side of the battery pack, and the second limiters 200 respectively abut against the front and rear sides of the battery pack.

[0035] In some embodiments, all of the first limit members 100, the second limit members 200, and the third limit members 300 are detachably mounted on the vibration table, so as to facilitate the movement of the first limit members 100, the second limit members 200, and the third limit members 300 on the vibration table, and are used for vibration tests of battery packs of different models. In other embodiments, the first limit member 100 located on the left side of the battery pack is fixedly connected to the vibration table, the first limit member 100 located on the right side of the battery pack is detachably connected to the vibration table, the second limit member 200 located on the front side of the battery pack is fixedly connected to the vibration table, and the second limit member 200 located on the rear side of the battery pack is detachably connected to the vibration table. By adjusting the positions of the first limit member 100 located on the right side of the battery pack and the second limit member 200 located on the rear side of the battery pack on the vibration table, vibration tests of battery packs of different models can be performed. In some of the embodiments, a plurality of first threaded holes are provided on the vibration table, and corresponding second threaded holes are provided on the first limit member 100, the second limit member 200 and the third limit member 300 respectively. The first limit member 100, the second limit member 200 and the third limit member 300 are respectively detachably mounted on the vibration table by bolts, so as to be used for vibration testing of battery packs of different models.

[0036] By utilizing the technical solution in the above-mentioned embodiment, by arranging the first limit members 100 at intervals on the vibration table, the first limit members 100 are used to approach the battery pack along the width direction of the vibration table to abut against the opposite two sides of the battery pack, thereby pressing the battery pack in the width direction of the vibration table; by arranging the second limit members 200 at intervals on the vibration table, the second limit members 200 are used to approach the battery pack along the length direction of the vibration table to abut against the opposite two ends of the battery pack, thereby pressing the battery pack in the length direction of the vibration table; by arranging the third limit member 300 on the vibration table, the third limit member 300 is used to abut against the side of the battery pack away from the vibration table, thereby pressing the battery pack in the height direction of the vibration table; thus, the first limit member 100, the second limit member 200 and the third limit member 300 jointly limit the displacement of the battery pack in the width, length and height directions of the vibration table, so as to ensure that the battery pack itself will not undergo a large deformation during the vibration process, reduce the fatigue phenomenon of various components in the test, and effectively avoid frequent shaking of the battery body in the test, so as to obtain a more realistic vibration fatigue durability performance of the battery pack.

[0037] Reference Figure 1 , Figure 2As shown, in some embodiments of the present application, the first position-limiting member 100 includes a main body 110 and a protrusion 120. The main body 110 is detachably connected to the vibration table. The main body 110 is provided with a first mounting hole 111. The axis of the first mounting hole 111 is parallel to the height direction of the vibration table. A first abutment surface 112 is formed on one side of the main body 110. The first abutment surface 112 is perpendicular to the first direction. The protrusion 120 is disposed on the first abutment surface 112. In some embodiments, the main body 110 is a rectangular block, the first mounting hole 111 is a threaded hole, the main body 110 is detachably mounted on the vibration table by bolts, the first abutment surface 112 is a side wall of the rectangular block, and the protrusion 120 protrudes outward from the first abutment surface 112. It should be noted that, generally, hanging holes are provided on the left and right sides of the battery pack, respectively, and the shape of the protrusion 120 is adapted to the inner diameter of the hanging hole. During the test, the protrusion 120 is inserted into the hanging hole of the battery pack, and the outer wall of the protrusion 120 is gap-fitted with the inner wall of the hanging hole until the side wall of the battery pack and the first abutment surface 112 are pressed against each other, thereby pressing the battery pack in the width direction of the vibration table. The bolts are then installed through the first mounting holes 111 to install the main body 110 on the vibration table. In the process of the bolts pressing the main body 110 downward, the protrusion in the hanging hole will press the battery pack downward, thereby pressing the battery pack in the height direction of the vibration table. The tightness of pressing the battery pack downward can also be adjusted by adjusting the tightening degree of the bolts.

[0038] Reference Figure 3 , Figure 4 As shown, in some embodiments of the present application, the outer wall of the protrusion 120 is formed with a first plane 121 and a second plane 122 arranged opposite to each other, and the first plane 121 and the second plane 122 are perpendicular to the height direction of the vibration table. In some specific embodiments, the protrusion 120 is a bar block, the length direction of the bar block is parallel to the length direction of the vibration table, the upper side of the bar block is the first plane 121, and the lower side of the bar block is the second plane 122. Since the shape of the bar block is adapted to the inner diameter of the hanging hole on the battery pack, in the process of the bolt pressing the main body 110 downward, the first plane 121 and the second plane 122 bear the downward pressure load, so that the second plane 122 directly presses the battery pack in the height direction of the vibration table, thereby ensuring that the battery pack is more stably pressed on the vibration table.

[0039] Reference Figure 3 , Figure 4 As shown, in some embodiments of the present application, the end of the protrusion 120 away from the first abutment surface 112 is an introduction end 123, and a guide slope 124 is formed between the introduction end and the outer wall of the protrusion 120. By providing the guide slope 124, it is easy to insert the protrusion 120 into the hanging hole on the battery pack.

[0040] Reference Figure 1 , Figure 2As shown, in some embodiments of the present application, the third limiting member 300 includes a beam seat 310 and a pressure beam 320. The beam seat 310 is detachably connected to the vibration table. A second mounting hole 311 is provided on the beam seat 310. The axis of the second mounting hole 311 is parallel to the length direction of the vibration table. The pressure beam 320 is detachably connected to the beam seat 310. The pressure beam 320 is used to abut against the side of the battery pack away from the vibration table. In some specific embodiments, there are multiple beam seats 310, and the multiple beam seats 310 are arranged on the vibration table at intervals around the battery pack. The lower end of each beam seat 310 is installed on the vibration table by bolts, and the height of the beam seat 310 is consistent with the height of the battery pack; the pressure beam 320 includes cross-connected cross beams and longitudinal beams, for example, two cross beams and two longitudinal beams are vertically connected, and the two ends of each cross beam are connected to the corresponding beam seat 310 by screws or bolts, and the two ends of each longitudinal beam are connected to the corresponding beam seat 310 by screws or bolts; the lower side surfaces of the two cross beams abut against the upper side surface of the battery pack, thereby pressing the battery pack as a whole in the height direction of the vibration table.

[0041] Reference Figure 1 , Figure 2 As shown, in some embodiments of the present application, the second stopper 200 is detachably connected to the vibration table, and the second stopper 200 is provided with a third mounting hole 230, the axis of the third mounting hole 230 is parallel to the length direction of the vibration table, and a second abutting surface 210 is formed on one side of the second stopper 200, and the second abutting surface 210 is perpendicular to the second direction. In some specific embodiments, the second mounting hole 311 is a threaded hole corresponding to the position of the third mounting hole 230 and both are threaded holes, and the bolts pass through the second mounting hole 311 and the third mounting hole 230 in sequence to install the second stopper 200 on the beam seat 310, and the second abutting surface 210 is a plane and abuts against the front and rear sides of the battery pack, and the degree of compression of the second abutting surface 210 on the battery pack can also be adjusted by adjusting the degree of tightening of the bolts.

[0042] Reference Figure 5 As shown, a curved surface 220 is further provided on a side of the second limiting member 200 close to the battery pack, and the curved surface 220 is smoothly connected to the second abutting surface 210 to adapt to the chamfer shape of the battery pack itself to better fit the battery pack.

[0043] Reference Figure 1 , Figure 2As shown, in some embodiments of the present application, the tooling further includes a support plate 400, which is disposed on the vibration table, and is used to abut against the side of the battery pack close to the vibration table. Specifically, the support plate 400 is a flat steel plate, and a plate hole is provided at the edge of the support plate 400. Bolts pass through the plate hole to install the support plate 400 on the vibration table. By arranging the support plate 400 on the vibration table, the lower side of the battery pack is completely fitted with the support plate 400, and it is ensured that there is no empty area between the battery pack and the vibration table, so that the battery pack is pressed more firmly on the vibration table.

[0044] In some embodiments of the present application, the tooling further includes a buffer layer, which is disposed on the side of the support plate 400 away from the vibration table and is used to abut against the side of the battery pack close to the vibration table. Optionally, the buffer layer is a hard foam layer, and by filling the hard foam layer between the support plate 400 and the lower side of the battery pack, a certain buffering effect can be achieved to enhance the bottom reliability and safety.

[0045] Reference Figure 1 , Figure 2 As shown, in some embodiments of the present application, the tooling further includes a positioning block 500, which is a right-angle block. A fourth mounting hole 510 and a fifth mounting hole 520 are provided on the positioning block 500. The axis of the fourth mounting hole 510 is parallel to the length direction of the vibration table, and the axis of the fifth mounting hole 520 is parallel to the height direction of the vibration table. Specifically, the fourth mounting hole 510 and the fifth mounting hole 520 are both threaded holes. A bolt passes through the fourth mounting hole 510 to connect the positioning block 500 to the battery pack, and another bolt passes through the fifth mounting hole 520 to connect the positioning block 500 to the vibration table. By providing the positioning block 500, it is possible to ensure that the battery pack is accurately positioned on the vibration table and prevent the battery pack from deflecting when the tooling is installed.

[0046] The general assembly process of the battery pack vibration test tooling provided in the embodiment of the present application on the vibration table is as follows: install the support plate 400 on the vibration table; use a hoist to lift the battery pack, and then install the positioning blocks 500 on the four corners of the battery pack close to the vibration table; use a hoist to drop the battery pack onto the support plate 400; install the first limit member 100, the beam seat 310 and the second limit member 200 in sequence; finally, install the pressure beam 320 to complete the installation of the battery pack on the battery pack vibration test tooling.

[0047] A battery pack vibration test device is also provided in an embodiment of the present application, including the battery pack vibration test tooling in the above embodiment.

[0048] It should be noted that the battery pack vibration test equipment includes the battery pack vibration test tooling, which also includes all the advantages of the battery pack vibration test tooling mentioned above, which will not be repeated here.

[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 referred device or element 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] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In this application, 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 connection; 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 this application can be understood according to specific circumstances.

[0052] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the 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 battery pack vibration test tool, characterized in that: include: A first stopper, arranged on the vibration table at intervals, and used to approach the battery pack along a first direction to abut against two opposite sides of the battery pack, wherein the first direction is a width direction of the vibration table; A second stopper, arranged on the vibration table at intervals, and used to approach the battery pack along a second direction to abut against opposite ends of the battery pack, wherein the second direction is a length direction of the vibration table; The third limiting member is arranged on the vibration platform and is used for abutting against a side of the battery pack away from the vibration platform.

2. The battery pack vibration test fixture according to claim 1, characterized in that: The first limiting member comprises: A main body part is detachably connected to the vibration table, and is provided with a first mounting hole, wherein the axis of the first mounting hole is parallel to the height direction of the vibration table, and a first abutting surface is formed on one side of the main body part, and the first abutting surface is perpendicular to the first direction; The convex block is arranged on the first abutting surface.

3. The battery pack vibration test fixture according to claim 2, characterized in that: The outer wall of the protrusion is formed with a first plane and a second plane which are arranged opposite to each other, and the first plane and the second plane are perpendicular to the height direction of the vibration table.

4. The battery pack vibration test fixture according to claim 2, characterized in that: One end of the protrusion away from the first abutting surface is a guide end, and a guiding inclined surface is formed between the guide end and the outer wall of the protrusion.

5. The battery pack vibration test fixture according to claim 1, characterized in that: The third limiting member comprises: A beam seat, detachably connected to the vibration table, a second mounting hole is formed on the beam seat, and an axis of the second mounting hole is parallel to the length direction of the vibration table; A pressure beam is detachably connected to the beam seat and is used to abut against a side of the battery pack away from the vibration platform.

6. The battery pack vibration test fixture according to claim 5, characterized in that: The second position-limiting member is detachably connected to the beam seat and is provided with a third mounting hole, the axis of the third mounting hole is parallel to the length direction of the vibration table, and a second abutting surface is formed on one side of the second position-limiting member, and the second abutting surface is perpendicular to the second direction.

7. The battery pack vibration test tool according to any one of claims 1 to 6, characterized in that: It also includes a support plate, which is arranged on the vibration table and is used to abut against a side of the battery pack close to the vibration table.

8. The battery pack vibration test fixture according to claim 7, characterized in that: A buffer layer is also included. The buffer layer is arranged on a side of the support plate away from the vibration table and is used to abut against a side of the battery pack close to the vibration table.

9. The battery pack vibration test fixture according to any one of claims 1 to 6, characterized in that: It also includes a positioning block, which is a right-angle block. A fourth mounting hole and a fifth mounting hole are opened on the positioning block. The axis of the fourth mounting hole is parallel to the length direction of the vibration table, and the axis of the fifth mounting hole is parallel to the height direction of the vibration table.

10. A battery pack vibration test device, characterized in that: A battery pack vibration test tool comprising any one of claims 1-9.

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