Battery pack airtight test compression tool

Abstract

The utility model relates to a battery package airtightness test compression tool belongs to battery package airtightness detection equipment technical field. The battery package airtightness test compression tool includes a plurality of compression mechanism, the compression mechanism all includes two adjusting assembly and down pressure subassembly, wherein, two adjusting assembly all include mounting and moving part, two mounting are suitable for installing respectively on the both sides of the symmetrical battery package, two moving parts all with corresponding mounting can be along the height direction of battery package movable cooperation, the down pressure subassembly is pasted with the upper cover of battery package, and down pressure subassembly is located simultaneously on the moving path of two moving parts, thereby through two moving parts can press corresponding down pressure subassembly on the upper cover. The utility model can compress the plane of each height of the stepped battery package upper cover.

Description

Technical Field

[0001] This utility model relates to the technical field of battery pack airtightness testing equipment, and in particular to a battery pack airtightness testing clamping fixture. Background Technology

[0002] Battery pack airtightness testing often employs a positive pressure method, where air is injected into the battery pack from the outside and held at a set pressure. However, because the top cover of battery packs is often made of non-metallic materials with low rigidity, it is prone to deformation and bulging when the internal pressure reaches a certain value. Excessive deformation can lead to plastic deformation or cracking. Furthermore, with increasing pressure, there is even a risk of explosion. Therefore, a clamping fixture is needed to tighten the top cover during battery pack airtightness testing. Some battery pack top covers are stepped, and many clamping fixtures can only clamp the highest surface, leaving the lower surfaces unclamped, resulting in poor clamping performance. Utility Model Content

[0003] Therefore, this utility model provides a battery pack airtightness testing clamping fixture, which can clamp the planes at various heights of the stepped battery pack cover. The technical solution is as follows:

[0004] The battery pack airtightness test clamping fixture includes multiple clamping mechanisms;

[0005] Each of the clamping mechanisms includes two adjusting components and a pressing component, wherein each of the two adjusting components includes a mounting component and a moving component;

[0006] The two mounting members are adapted to be installed on symmetrical sides of the battery pack respectively, and the two movable members are movablely engaged with the corresponding mounting members along the height direction of the battery pack.

[0007] The pressing component is attached to the top cover of the battery pack, and the pressing component is simultaneously located on the movement path of the two moving parts, so that the corresponding pressing component can be pressed onto the top cover by the two moving parts.

[0008] In one possible implementation, the pressing assembly includes a first pressing member, two second pressing members, and two fixing members;

[0009] The first pressing member has a first mounting hole, the second pressing member has a second mounting hole, the first pressing member has at least three first mounting holes and / or at least one second pressing member has at least two second mounting holes, the plurality of first mounting holes are distributed at intervals along a straight line, and the plurality of second mounting holes are distributed at intervals along a straight line.

[0010] The two second pressing members are located on opposite sides of the first pressing member, and the two second pressing members are located on the movement path of one of the moving members;

[0011] The fixing member corresponds one-to-one with the second pressing member, and the fixing member is rod-shaped. The two fixing members pass through one of the first mounting holes and one of the second mounting holes of the corresponding second pressing member in sequence.

[0012] In one possible implementation, both second pressing members are located between the upper cover and the first pressing member.

[0013] In one possible implementation, the lower side of the second pressing member has a pressure pad, and the hardness of the pressure pad is less than or equal to the hardness of the upper cover, wherein the lower side of the second pressing member is the side of the second pressing member facing the upper cover.

[0014] In one possible implementation, the mounting component includes a connected fixed base and a guide structure, the fixed base being mounted on the battery pack, and the movable component engaging with the guide structure movably along the height direction of the battery pack.

[0015] The two ends of the pressing component each have a U-shaped structure, and the openings of the U-shaped structures are nested outside the guide structure, so that the U-shaped structures are located on the movement path of the corresponding moving parts.

[0016] In one possible implementation, the openings of the two U-shaped structures of the pressing component are opposite to each other.

[0017] In one possible implementation, one end of the guide structure is hinged to the fixed base, allowing the guide structure to rotate about the corresponding hinge point and move out of the opening of the U-shaped structure.

[0018] In one possible implementation, the guide structure is a screw, one end of which is connected to the fixed base, and the screw can extend along the height direction of the battery pack;

[0019] The movable part is sleeved on the screw and is threadedly engaged with the screw.

[0020] In one possible implementation, the lower side of the movable member has an annular pressing block, the annular pressing block surrounding the screw with the axis of the screw as the center, and the U-shaped structure is located on the moving path of the annular pressing block, wherein the lower side of the movable member is the side of the movable member facing the U-shaped structure.

[0021] In one possible implementation, the mounting element includes a connected mounting base and guide structure, as well as a first bolt;

[0022] The mounting base is C-shaped, and the first end of the mounting base has a first threaded hole. The first bolt is adapted to pass through the corresponding first threaded hole and the third mounting hole of the battery pack in sequence, and abut against the second end of the mounting base. The first bolt is threadedly engaged with the corresponding first threaded hole.

[0023] The movable component and the guide structure can be movably engaged along the height direction of the battery pack.

[0024] In the solution shown in this utility model, the pressing mechanism, through the movement of two moving parts, can press the lowering component onto a plane at any height of the battery pack's upper cover, thus pressing the plane at any height of the upper cover. Therefore, through the cooperation of multiple pressing mechanisms, pressing can be achieved on planes at various heights of the upper cover, thereby improving the pressing effect on the upper cover. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a battery pack airtightness testing clamping fixture provided in an embodiment of this utility model;

[0027] Figure 2 This is a front view structural diagram of a battery pack airtightness testing clamping fixture provided in an embodiment of the present invention;

[0028] Figure 3 This is a top view schematic diagram of a battery pack airtightness testing clamping fixture provided in an embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures

[0030] 1. Adjustment component; 11. Mounting component; 111. Fixing base; 112. Guide structure; 113. First bolt; 12. Moving component; 121. Annular pressing block; 2. Pressing component; 21. First pressing component; 211. First mounting hole; 22. Second pressing component; 221. Second mounting hole; 222. Pressing pad; 23. Fixing component; 24. U-shaped structure; 3. Battery pack; 31. Top cover; 32. Third mounting hole; Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0032] This embodiment relates to a clamping fixture for testing the airtightness of a battery pack, such as... Figure 1 The diagram shows the structure of the clamping fixture for battery pack airtightness testing. Figure 2 The diagram shown is a front view of the clamping fixture for battery pack airtightness testing. Figure 3 The diagram shown is a top view of the clamping fixture for battery pack airtightness testing.

[0033] refer to Figure 1 and Figure 2 As shown, the battery pack airtightness test clamping fixture includes multiple clamping mechanisms. Each clamping mechanism includes two adjusting components 1 and a pressing component 2, wherein each adjusting component 1 includes a mounting part 11 and a moving part 12.

[0034] Continue to refer to Figure 2 As shown, the two mounting pieces 11 are adapted to be installed on the symmetrical sides of the battery pack 3 respectively, and the two movable pieces 12 can be movably engaged with the corresponding mounting pieces 11 along the height direction of the battery pack 3.

[0035] The pressing component 2 is attached to the upper cover 31 of the battery pack 3, and the pressing component 2 is simultaneously located on the movement path of the two moving parts 12, so that the two moving parts 12 can press the corresponding pressing component 2 onto the upper cover 31. For example Figure 2 As shown, the two ends of the pressing component 2 can be located on the underside of a movable part 12 respectively. By moving the two movable parts 12 downward, the corresponding pressing component 2 can be pressed onto the upper cover 31.

[0036] As described above, the pressing mechanism, through the movement of the two moving parts 12, can press the pressing component 2 onto a plane at any height of the upper cover 31 of the battery pack 3, thus pressing the plane at any height of the upper cover 31. Therefore, through the cooperation of multiple pressing mechanisms, it is possible to press the planes at various heights of the upper cover 31, thereby improving the pressing effect on the upper cover 31.

[0037] In one example, continue to refer to Figure 2 As shown, the pressing assembly 2 includes a first pressing member 21, two second pressing members 22, and two fixing members 23. For example, the first pressing member 21 and the two second pressing members 22 can each be as follows: Figure 1 The strip shown.

[0038] The first pressing member 21 has a first mounting hole 211, and the second pressing member 22 has a second mounting hole 221. The first pressing member 21 has at least three first mounting holes 211, and / or at least one second pressing member 22 has at least two second mounting holes 221. The multiple first mounting holes 211 are distributed at intervals along a straight line, and the multiple second mounting holes 221 are distributed at intervals along a straight line. For example, the multiple first mounting holes 211 can be distributed at intervals along the length direction of the first pressing member 21, and the multiple second mounting holes 221 can be distributed at intervals along the length direction of the corresponding second pressing member 22.

[0039] For example, the number of first mounting holes 211 in the first pressing member 21 may be greater than or equal to three; the number of second mounting holes 221 in one or two second pressing members 22 may be greater than or equal to two; or the number of first mounting holes 211 in the first pressing member 21 may be greater than or equal to three, while the number of second mounting holes 221 in one or two second pressing members 22 may be greater than or equal to two. For example Figure 3 As shown, the number of first mounting holes 211 of the first pressing member 21 can be nine, and the number of second mounting holes 221 of the two second pressing members 22 can be five.

[0040] Continue to refer to Figure 2 As shown, the two second pressing members 22 are located on opposite sides of the first pressing member 21, and the two second pressing members 22 are each located on the movement path of a moving member 12. For example Figure 2 As shown, the ends of the two second pressing members 22 that are opposite to each other can be located on the underside of a moving member 12, so that the moving member 12 can press on the ends of the two second pressing members 22 that are opposite to each other.

[0041] Furthermore, the fixing member 23 corresponds one-to-one with the second pressing member 22, and the fixing member 23 is rod-shaped. The two fixing members 23 pass through a first mounting hole 211 and a second mounting hole 221 of the corresponding second pressing member 22 in sequence. Thus, the two second pressing members 22 and the first pressing member 21 can be detachably and fixedly connected together by a fixing member 23.

[0042] For example, the fastener 23 can be a second bolt, the nut at the first end of the second bolt abuts against the first pressing member 21, the second end of the second bolt passes through a first mounting hole 211 and is screwed into a second mounting hole 221 of the corresponding second pressing member 22, wherein the mounting hole of the second mounting hole 221 is a bolt hole.

[0043] In another example, the fastener 23 may be a pin with a pin cap at the first end, which abuts against the first pressing member 21, and the second end of the second bolt passes through a first mounting hole 211 and is riveted into a second mounting hole 221 of the corresponding second pressing member 22.

[0044] In another example, the fastener 23 may be a screw with a screw cap at the first end that abuts against the first pressing member 21, and the second end of the screw passing through a first mounting hole 211 and screwed into a second mounting hole 221 of the corresponding second pressing member 22, wherein the mounting hole 221 is a screw hole.

[0045] Thus, since the two second pressing members 22 can be fixedly connected to the first pressing member 21, when the moving member 12 presses on the opposite ends of the two second pressing members 22, the pressing assembly 2 formed by the connection of the two second pressing members 22 and the first pressing member 21 can be pressed onto the upper cover 31. Furthermore, when the first mounting hole 211 and the second mounting hole 221 through which the two fixing members 23 pass change, the length of the pressing assembly 2 formed by the connection of the two second pressing members 22 and the first pressing member 21 also changes, thereby enabling the pressing of upper covers 31 of different lengths.

[0046] In one example, reference Figure 2 As shown, when the two second pressing members 22 are connected to the first pressing member 21, the two second pressing members 22 can both be located between the upper cover 31 and the first pressing member 21. Thus, when the two moving members 12 press the pressing assembly 2 onto the plane of the upper cover 31, the two second pressing members 22 can be brought into contact with and pressed against the plane of the upper cover 31.

[0047] In this way, the contact area between the pressing component 2 and the upper cover 31 can be large and symmetrical. Therefore, the pressure of the pressing component 2 on the upper cover 31 is relatively uniform, which helps to reduce the possibility of damage to the upper cover 31.

[0048] In one example, reference Figure 2 As shown, the lower side of the second pressing member 22 has a pressure pad 222. For example, the pressure pad 222 can be fixedly connected to the lower side of the second pressing member 22 by means of screws, adhesive, etc. The hardness of the pressure pad 222 is less than or equal to the hardness of the upper cover 31. For example, the material of the pressure pad 222 can be the same as that of the upper cover 31. The lower side of the second pressing member 22 is the side of the second pressing member 22 facing the upper cover 31.

[0049] Therefore, the second pressing member 22 can fit and press against the upper cover 31 through the pressing pad 222. Since the hardness of the pressing pad 222 is less than or equal to the hardness of the upper cover 31, it helps to further reduce the possibility of damage to the upper cover 31.

[0050] In one example, reference Figure 2 As shown, the mounting component 11 includes a fixed base 111 and a guide structure 112 connected together. The fixed base 111 is mounted on the battery pack 3, and the movable component 12 and the guide structure 112 can be movably engaged along the height direction of the battery pack 3.

[0051] refer to Figure 1 As shown, the two ends of the pressing component 2 have U-shaped structures 24 respectively. The openings of the U-shaped structures 24 are nested outside a guide structure 112, so that the U-shaped structures 24 are located on the movement path of the corresponding moving parts 12.

[0052] In this way, after the airtightness test of the battery pack 3 is completed, when it is necessary to remove the airtightness test clamping fixture, the guide structure 112 can be moved out from the opening of the U-shaped structure 24, thereby separating the adjustment component 1 from the pressing component 2, and thus enabling the separate transfer of the adjustment component 1 and the pressing component 2, which helps to reduce manual labor.

[0053] In one example, the openings of the two U-shaped structures 24 of the pressing component 2 are opposite to each other. For example Figure 1 As shown, the two U-shaped structures 24 of the pressing component 2 can be located at opposite ends of the two second pressing members 22, and the openings of the U-shaped structures 24 face away from each other. Therefore, the opposite orientation of the openings of the U-shaped structures 24 allows the pressing component 2 to be limited by the guide structure 112, which helps ensure the stability of the pressing component 2 during the airtightness test and prevents the pressing component 2 from shifting.

[0054] In one example, one end of the guide structure 112 is hinged to the fixed base 111, so that the guide structure 112 can rotate about the corresponding hinge point and can move out from the opening of the U-shaped structure 24.

[0055] Therefore, after completing the airtightness test of the battery pack, the movable component 31 can be moved upwards, so that the U-shaped structure 24 is no longer under pressure from the movable component 31. At this time, rotating the guide structure 112 in the forward direction can move the guide structure 112 out of the opening of the U-shaped structure 24 and remove the pressing component 2, thus avoiding the pressing component 2 from obstructing the subsequent removal of the mounting component 11. When the airtightness test of the battery pack is required, the mounting component 11 can be installed on the battery pack 3 first through the fixing seat 111, and then the pressing component 2 can be placed on the top cover 31. At this time, rotating the guide structure 112 in the reverse direction can rotate the guide structure 112 into the opening of the U-shaped structure 24, and then moving the movable component 31 that cooperates with the guide structure 112 downwards, thus easily completing the installation of the pressing mechanism. This helps to improve work efficiency.

[0056] In one example, the guide structure 112 is a screw, one end of which is connected to the fixed base 111. For example Figure 2 As shown, the bottom end of the screw can be hinged to the fixed base 111.

[0057] Furthermore, the screw can extend along the height direction of the battery pack 3. For example... Figure 1 As shown, when the screw rotates around the corresponding hinge point into the opening of the U-shaped structure 24, the screw can extend along the height direction of the battery pack 3.

[0058] The movable component 12 is sleeved on the screw and threadedly engaged with it. For example, the movable component 12 may have a second threaded hole in its middle that mates with the screw, and it is sleeved on the screw through the second threaded hole. In this way, rotating the movable component 12 allows it to move along the extension direction of the screw, and the engagement between the screw and the movable component 12 is self-locking. Therefore, it not only has a simple structure and good stability, but is also easy to operate.

[0059] In one example, the lower side of the movable member 12 has an annular pressing block 121, which surrounds the screw with the screw axis as the center, and the U-shaped structure 24 is located on the moving path of the annular pressing block 121. The lower side of the movable member 12 is the side facing the U-shaped structure 24, so that the movable member 12 can press against the U-shaped structure 24 via the annular pressing block 121. It should be noted that the annular pressing block 121 and the movable member 12 can be integrally formed, or they can be two independent structural parts fixed together by screws, adhesives, or other methods.

[0060] Since the annular pressing block 121 surrounds the screw with the axis of the screw as the center, the contact position between the annular pressing block 121 and the U-shaped structure 24 is basically consistent no matter where the moving part 12 rotates and moves to. This helps to improve the uniformity of force on each height plane of the upper cover 31.

[0061] In one example, the mounting component 11 includes a connected mounting base 111, a guide structure 112, and a first bolt 113. For example... Figure 2 As shown, the guide structure 112 can be a screw, and the bottom end of the screw can be hinged to the fixed base 111. The movable member 12 and the guide structure 112 can be movably engaged along the height direction of the battery pack 3. For example, the middle part of the movable member 12 can have a second threaded hole that mates with the screw, and it can be sleeved onto the screw through the second threaded hole.

[0062] Continue to refer to Figure 2As shown, the mounting base 111 is C-shaped, and the first end of the mounting base 111 has a first threaded hole. The first bolt 113 is adapted to pass through the corresponding first threaded hole and the third mounting hole 32 of the battery pack 3 in sequence, and abut against the second end of the mounting base 111. The first bolt 113 is threadedly engaged with the corresponding first threaded hole.

[0063] Therefore, rotating the first bolt 113 in the forward direction allows it to pass through the corresponding first threaded hole and the third mounting hole 32 of the battery pack 3 in sequence, and abut against the second end of the fixing seat 111, thus enabling the fixing seat 111 to be installed on the battery pack 3. Rotating the first bolt 113 in the reverse direction allows it to be removed from the third mounting hole 32, thereby separating the fixing seat 111 from the battery pack 3.

[0064] In one example, the third mounting hole 32 of the battery pack 3 can be located on both sides of the outer frame of the battery pack 3, for bolt connection to the vehicle. This avoids the need for additional separate airtightness testing holes on the battery pack 3, reducing the manufacturing cost of the battery pack 3.

[0065] In this embodiment of the invention, the pressing mechanism, through the movement of two moving parts 12, can press the pressing component 2 onto a plane at any height of the upper cover 31 of the battery pack 3, thereby pressing the plane at any height of the upper cover 31. Thus, through the cooperation of multiple pressing mechanisms, pressing can be achieved on planes at various heights of the upper cover 31, thereby improving the pressing effect on the upper cover 31.

[0066] It should be noted that the terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0067] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A clamping fixture for testing the airtightness of a battery pack, characterized in that, The battery pack airtightness test clamping fixture includes multiple clamping mechanisms; Each of the pressing mechanisms includes two adjusting components (1) and a pressing component (2), wherein each of the two adjusting components (1) includes a mounting component (11) and a moving component (12); The two mounting members (11) are adapted to be installed on the symmetrical sides of the battery pack (3) respectively, and the two moving members (12) are movablely engaged with the corresponding mounting members (11) along the height direction of the battery pack (3); The pressing component (2) is attached to the top cover (31) of the battery pack (3), and the pressing component (2) is located on the moving path of the two moving parts (12) at the same time, so that the corresponding pressing component (2) can be pressed on the top cover (31) by the two moving parts (12).

2. The battery pack airtightness testing clamping fixture according to claim 1, characterized in that, The pressing assembly (2) includes a first pressing member (21), two second pressing members (22) and two fixing members (23); The first pressing member (21) has a first mounting hole (211), and the second pressing member (22) has a second mounting hole (221). The first pressing member (21) has at least three first mounting holes (211) and / or at least one second pressing member (22) has at least two second mounting holes (221). The plurality of first mounting holes (211) are distributed at intervals along a straight line, and the plurality of second mounting holes (221) are distributed at intervals along a straight line. The two second pressing members (22) are respectively located on opposite sides of the first pressing member (21), and the two second pressing members (22) are respectively located on the moving path of one of the moving members (12); The fixing member (23) corresponds one-to-one with the second pressing member (22), and the fixing member (23) is rod-shaped. The two fixing members (23) pass through a first mounting hole (211) and a second mounting hole (221) of the corresponding second pressing member (22) in sequence.

3. The battery pack airtightness testing clamping fixture according to claim 2, characterized in that, Both second pressing members (22) are located between the upper cover (31) and the first pressing member (21).

4. The battery pack airtightness testing clamping fixture according to claim 3, characterized in that, The second pressing member (22) has a pressing pad (222) on its lower side, and the hardness of the pressing pad (222) is less than or equal to the hardness of the upper cover (31). The lower side of the second pressing member (22) is the side of the second pressing member (22) facing the upper cover (31).

5. The battery pack airtightness testing clamping fixture according to claim 1, characterized in that, The mounting component (11) includes a connected fixed base (111) and a guide structure (112). The fixed base (111) is mounted on the battery pack (3). The movable component (12) and the guide structure (112) are movablely engaged along the height direction of the battery pack (3). The two ends of the pressing component (2) have U-shaped structures (24), and the openings of the U-shaped structures (24) are nested outside the guide structure (112), so that the U-shaped structures (24) are located on the movement path of the corresponding moving part (12).

6. The battery pack airtightness testing clamping fixture according to claim 5, characterized in that, The openings of the two U-shaped structures (24) of the pressing component (2) are opposite to each other.

7. The battery pack airtightness testing clamping fixture according to claim 6, characterized in that, One end of the guide structure (112) is hinged to the fixed base (111), so that the guide structure (112) can rotate around the corresponding hinge point and can move out from the opening of the U-shaped structure (24).

8. The battery pack airtightness testing clamping fixture according to claim 5, characterized in that, The guide structure (112) is a screw, one end of which is connected to the fixed base (111), and the screw can extend along the height direction of the battery pack (3); The movable part (12) is sleeved on the screw and threadedly engaged with the screw.

9. The battery pack airtightness testing clamping fixture according to claim 8, characterized in that, The lower side of the movable member (12) has an annular pressing block (121), which surrounds the screw with the axis of the screw as the center, and the U-shaped structure (24) is located on the moving path of the annular pressing block (121), wherein the lower side of the movable member (12) is the side of the movable member (12) facing the U-shaped structure (24).

10. The battery pack airtightness testing clamping fixture according to claim 8, characterized in that, The mounting component (11) includes a connected fixing seat (111) and a guide structure (112) as well as a first bolt (113); The fixing seat (111) is C-shaped, and the first end of the fixing seat (111) has a first threaded hole. The first bolt (113) is adapted to pass through the corresponding first threaded hole and the third mounting hole (32) of the battery pack (3) in sequence, and abut against the second end of the fixing seat (111). The first bolt (113) is threadedly engaged with the corresponding first threaded hole. The movable component (12) and the guide structure (112) can be movably engaged along the height direction of the battery pack (3).

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