A test fixture

Abstract

The application discloses a test fixture, which comprises a side clamp and a pressing device. The side clamp comprises a first clamp plate and a second clamp plate, and a clamping space is formed between the first clamp plate and the second clamp plate. In a first direction, the first clamp plate and the second clamp plate can be selectively close to each other for clamping a battery. In a second direction, the pressing device can be selectively close to the clamping space for extruding the battery. The first direction and the second direction are arranged at an angle. Compared with the prior art, the traditional test fixture is easy to cause the battery to be bent or damaged when extruding the side or top surface of the battery due to a small stress surface, and real performance data cannot be obtained. In the embodiment, the relative movement direction of the side clamp and the pressing device is arranged at an angle, so that when the side or top surface is extruded, the large surface of the battery can be effectively supported and fixed, and the bending phenomenon is avoided.

Description

Technical Field

[0001] This application relates to the field of fixture and tooling technology, and in particular to a test fixture. Background Technology

[0002] Currently, the widely used test fixtures on the market mainly focus on deformation testing of the large surface area of ​​the battery. This testing method can effectively evaluate the battery's compressive strength in the large surface area. However, with the diversification of product designs and the increasing complexity of application environments, testing only in the large surface area can no longer fully reflect the stress conditions of the battery during actual use.

[0003] During use, batteries may be subjected to external forces from various directions, especially on their sides and top. When these surfaces are subjected to force, due to their small contact area, the battery is prone to bending during compression without effective clamps for support and fixation, making it impossible to accurately measure its true mechanical properties. This not only affects the accuracy of test results but may also damage the battery structure, further posing safety hazards. Utility Model Content

[0004] In view of the shortcomings of the prior art, this application provides a test fixture that can ensure that the battery will not bend due to the small force surface when performing top or side compression tests.

[0005] To achieve the above objectives, this application adopts the following technical solution: A test fixture includes a side clamp and a pressure fixture. The side clamp includes a first clamping plate and a second clamping plate, and a clamping space is formed between the first clamping plate and the second clamping plate. Along a first direction, the first clamping plate and the second clamping plate can selectively approach each other to clamp a battery. Along a second direction, the pressure fixture can selectively approach the clamping space and is used to squeeze the battery. The first direction and the second direction are arranged at an angle.

[0006] In one embodiment, the side clamp includes a first guide extending along the first direction. One end of the first guide is connected to the first clamping plate, and the other end is connected to the second clamping plate. The first guide can move relative to the first clamping plate and / or the second clamping plate along the first direction, thereby allowing the first clamping plate and the second clamping plate to selectively move closer to or further away from each other.

[0007] In one embodiment, one end of the first guide member is fixedly connected to the first clamping plate, and the other end is slidably connected to the second clamping plate.

[0008] In one embodiment, the first guide member includes a guide rod and a sliding sleeve. One end of the guide rod is connected to the first clamping plate, and the other end passes through the second clamping plate. The sliding sleeve is slidably fitted onto the guide rod and connected to the second clamping plate.

[0009] In one embodiment, the side clamp includes a locking member that connects the first clamping plate and the second clamping plate to fix the first clamping plate and the second clamping plate.

[0010] In one embodiment, the test fixture includes a clamping assembly, which includes a base plate and a top plate. The side clamp is disposed between the base plate and the top plate. The pressure fixture is connected to the top plate. The top plate can selectively move closer to or further away from the base plate along the second direction to drive the pressure fixture to move along the second direction.

[0011] In one embodiment, the clamping assembly further includes a second guide extending along the second direction, one end of which is connected to the base plate and the other end of which is connected to the top plate. The second guide can move relative to the base plate and / or the top plate along the second direction, thereby allowing the top plate to selectively move closer to or further away from the base plate along the second direction.

[0012] In one embodiment, the press is detachably connected to the top plate.

[0013] In one embodiment, the clamping assembly includes a first fixing member, the top plate has a first fixing hole, the pressure tool has a second fixing hole, and the first fixing member passes through the first fixing hole and the second fixing hole to fix the pressure tool and the top plate.

[0014] In one embodiment, the clamping assembly includes a second fixing member, wherein one of the first clamping plate and the second clamping plate is fixed to the base plate by the second fixing member.

[0015] The beneficial effects of this application are as follows: This application provides a test fixture, including a side clamp and a pressure fixture. The side clamp includes a first clamping plate and a second clamping plate, with a clamping space formed between the first and second clamping plates. Along a first direction, the first and second clamping plates can selectively approach each other to clamp the battery. Along a second direction, the pressure fixture can selectively approach the clamping space to compress the battery. The first and second directions are set at an angle. Compared to existing technologies, traditional test fixtures, when compressing the side or top surface of a battery, are prone to bending or damage due to the small force-bearing surface, making it impossible to obtain accurate performance data. This embodiment, by designing the relative movement directions of the side clamp and the pressure fixture to be set at an angle, ensures that the large surface of the battery is effectively supported and fixed during side or top surface compression, avoiding bending. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a test fixture according to this application is shown; Figure 2 An exploded view of a test fixture according to this application is shown; Figure 3 A schematic diagram of the structure of a side clamp according to this application is shown; Reference numerals: 1. Side clamp; 11. First clamping plate; 12. Second clamping plate; 121. Through hole; 13. Clamping space; 14. First guide; 141. Sliding sleeve; 1411. Sliding groove; 142. Guide rod; 15. Locking element; 2. Pressing tool; 3. Clamping assembly; 31. Top plate; 311. First fixing hole; 32. Bottom plate; 33. Second guide; 34. First fixing component; 35. Second fixing component; 4. Battery. Detailed Implementation

[0017] In this application, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0018] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] See Figure 1 and Figure 2 This application provides a test fixture, including a side clamp 1 and a pressure fixture 2. The side clamp 1 includes a first clamping plate 11 and a second clamping plate 12, and a clamping space 13 is formed between the first clamping plate 11 and the second clamping plate 12. Along a first direction, the first clamping plate 11 and the second clamping plate 12 can selectively approach each other to clamp a battery 4. Along a second direction, the pressure fixture 2 can selectively approach the clamping space 13 to squeeze the battery 4. The first direction and the second direction are set at an angle.

[0021] It should be noted that this application uses a square battery 4 as an example for explanation. The square battery 4 usually has two front sides arranged opposite to each other and four sides arranged around the front sides. The front side is the side with the largest area. The first direction is usually perpendicular to the front side. The second direction can be arranged perpendicular to the first direction. That is to say, the second direction is usually perpendicular to the side side.

[0022] In practical applications, the side clamp 1 includes a first clamping plate 11 and a second clamping plate 12, forming a clamping space 13 between them. The size of the clamping space 13 can be adjusted by controlling the relative movement of the first clamping plate 11 and the second clamping plate 12 along a first direction. When it is necessary to fix the battery 4, the clamping plates can be adjusted to bring them closer together, thereby stably clamping the battery 4 within the clamping space 13. Conversely, when it is necessary to release the battery 4, the clamping plates can be adjusted to move them further apart. Specifically, the first clamping plate 11 and the second clamping plate 12 clamp the large surface of the battery 4, that is, the front surface, providing effective support for the large surface of the battery 4.

[0023] The clamp 2 is positioned above or to the side of the clamping space 13 and is movable in the second direction. Through mechanical or automated means, the clamp 2 can selectively approach or move away from the clamping space 13 to apply pressure to the top or side of the battery 4. The first and second directions are arranged at an angle; this design, where the side clamp 1 supports the battery 4 in the first direction and the clamp 2 compresses the battery 4 in the second direction, helps to avoid the risk of bending the battery 4 in the first direction when pressure is applied.

[0024] Compared to existing technologies, traditional test fixtures, when pressing the side or top surface of battery 4, are prone to bending or damage due to the small force-bearing area, making it impossible to obtain accurate performance data. This embodiment designs the side fixture 1 and the pressure fixture 2 to be angled relative to each other, ensuring that the larger surface of battery 4 is effectively supported and fixed during side or top pressing, preventing bending. With this fixture device, effective pressing tests can be performed on different surfaces of battery 4 without damaging its structure.

[0025] See again Figure 2 The side clamp 1 includes a first guide 14 extending along a first direction. One end of the first guide 14 is connected to the first clamping plate 11, and the other end is connected to the second clamping plate 12. The first guide 14 can move relative to the first clamping plate 11 and / or the second clamping plate 12 along the first direction, thereby allowing the first clamping plate 11 and the second clamping plate 12 to selectively move closer to or further away from each other.

[0026] In practical applications, the first guide 14 can move relative to the first clamping plate 11 and / or the second clamping plate 12 in a first direction. This movable design allows the user to adjust the size of the clamping space 13 by controlling the displacement of the first guide 14, thereby achieving flexible clamping of batteries 4 of different specifications. When it is necessary to clamp the battery 4, the guide moves the first clamping plate 11 and the second clamping plate 12 closer together, firmly fixing the battery 4 within the clamping space 13. Conversely, when it is necessary to release the battery 4, the movement of the first guide 14 moves the clamping plates away from each other, thereby easily placing or removing the battery 4.

[0027] By providing the first guide member 14, a simple and reliable adjustment mechanism is provided. The movement of the first guide member 14 ensures the synchronous and parallel movement of the clamping plates, avoiding problems such as unstable clamping or damage to the battery 4 caused by non-parallel clamping plates.

[0028] See again Figure 2 One end of the first guide member 14 is fixedly connected to the first clamping plate 11, and the other end is slidably connected to the second clamping plate 12.

[0029] It should be noted that one of the first clamping plate 11 and the second clamping plate 12 can be slidably connected to the first guide member 14, while the other is fixedly connected to the first guide member 14. Here, we will take the slidable connection between the second clamping plate 12 and the first guide member 14 as an example.

[0030] In practical applications, one end of the first guide 14 is fixedly connected to the first clamping plate 11, and the other end is slidably connected to the second clamping plate 12, so as to allow the second clamping plate 12 to slide along the first guide 14 in the first direction to adjust the size of the clamping space 13, thereby accommodating batteries 4 of different sizes.

[0031] It is understood that the second clamping plate 12 and the first guide member 14 can be connected by sliding or by thread, as long as the second clamping plate 12 can move in the first direction. This application does not limit this.

[0032] See again Figure 2 The first guide member 14 includes a guide rod 142 and a sliding sleeve 141. One end of the guide rod 142 is connected to the first clamping plate 11, and the other end passes through the second clamping plate 12. The sliding sleeve 141 is slidably sleeved on the guide rod 142 and connected to the second clamping plate 12.

[0033] In practical applications, one end of the guide rod 142 is fixedly connected to the first clamping plate 11, while the other end passes through the second clamping plate 12. The sliding sleeve 141 is slidably fitted onto the guide rod 142 and fixedly connected to the second clamping plate 12. By adjusting the sliding position of the guide rod 142 within the sliding sleeve 141, the distance between the first clamping plate 11 and the second clamping plate 12 can be easily changed. This design allows the user to flexibly adjust the position of the clamping plates according to the size of the battery 4 to be tested, thereby achieving a stable clamping of the battery 4. The sliding sleeve 141 can be fixedly connected to the second clamping plate 12 using bolts or rivets.

[0034] In use, the user simply places the battery 4 between the two clamping plates of the fixture, and then adjusts the relative position of the guide rod 142 by using the sliding sleeve 141, thereby clamping the battery 4 between the two clamping plates. This design ensures a secure clamping of the battery 4 while avoiding excessive pressure on it.

[0035] Specifically, see Figure 3 The second clamping plate 12 has a through hole 121. One end of the sliding sleeve 141 passes through the through hole 121, and the other end is fixedly connected to the second clamping plate 12. The sliding sleeve 141 itself forms a sliding groove 1411. The guide rod 142 passes through the sliding groove 1411 and slides in cooperation with the sliding groove 1411.

[0036] See again Figure 2The side clamp 1 includes a locking member 15, which is connected to the first clamping plate 11 and the second clamping plate 12 respectively to fix the first clamping plate 11 and the second clamping plate 12.

[0037] In practical applications, the battery 4 is placed between the first clamping plate 11 and the second clamping plate 12, and the clamping plate spacing is adjusted by the aforementioned first guide member 14 to fit the size of the battery 4. Subsequently, the two clamping plates are fixed by the locking member 15. The locking member 15 can typically be designed as an adjustable bolt, snap-fit, or other mechanical locking device, and the two clamping plates can be fixed by a simple rotation or snap-fit ​​operation.

[0038] The locking element 15 ensures that after the clamping plate position is adjusted, the first clamping plate 11 and the second clamping plate 12 will not change position due to external force or vibration, thereby ensuring that the battery 4 always plays a clamping and supporting role, which significantly improves the stability of the clamp during the battery 4 testing process and prevents accidental loosening.

[0039] See again Figure 2 The test fixture includes a clamping assembly 3, which includes a base plate 32 and a top plate 31. A side clamp 1 is disposed between the base plate 32 and the top plate 31. A pressure fixture 2 is connected to the top plate 31. The top plate 31 can selectively move closer to or further away from the base plate 32 in a second direction to drive the pressure fixture 2 to move in the second direction.

[0040] In practical applications, the battery 4 is placed in the side clamp 1 on the base plate 32, and the battery 4 is initially fixed by adjusting the clamping space 13 distance of the side clamp 1. Next, the position of the top plate 31 is adjusted by a mechanical or hydraulic device, causing it to move in the second direction. The movement of the top plate 31 drives the pressure fixture 2 to move synchronously, thereby applying appropriate pressure to the side of the battery 4.

[0041] The design of clamping component 3 significantly improves the fixing effect of battery 4, ensuring its stability during testing; the connection design between pressure fixture 2 and top plate 31 makes the pressure distribution more uniform, avoiding excessive local stress on battery 4; through the adjustable movement of top plate 31, users can flexibly adjust it according to different battery 4 sizes and requirements, improving the applicability and ease of operation of the clamp.

[0042] See again Figure 2 The clamping assembly 3 also includes a second guide 33 extending in a second direction. One end of the second guide 33 is connected to the base plate 32 and the other end is connected to the top plate 31. The second guide 33 can move relative to the base plate 32 and / or the top plate 31 in the second direction, thereby allowing the top plate 31 to selectively move closer to or further away from the base plate 32 in the second direction.

[0043] In practical applications, the second guide member 33 is connected to both the top plate 31 and the bottom plate 32. The second guide member 33 can allow both the top plate 31 and the bottom plate 32 to move simultaneously along the first direction, or it can allow only one of them to move along the first direction, allowing the top plate 31 and the bottom plate 32 to move closer to or further away from each other, thereby causing the pressure fixture 2 to squeeze or move away from the battery 4. The second guide member 33 improves the smoothness and accuracy of the movement of the top plate 31 or the bottom plate 32, preventing tilting or jamming that may occur during adjustment.

[0044] It should be noted that one end of the second guide member 33 can be fixedly connected to the bottom plate 32, and the other end can be slidably connected to the top plate 31. The specific configuration can be referred to the first guide member 14 mentioned above, and will not be repeated here.

[0045] In one embodiment, the pressure fixture 2 is detachably connected to the top plate 31. In practical applications, the detachable connection between the pressure fixture 2 and the top plate 31 makes daily maintenance and troubleshooting of the equipment more convenient. Furthermore, since the shape of each side of the battery 4 is different, for example, the side with the terminal post, when the pressure fixture 2 is pressing this side, it needs to have a groove adapted to the terminal post to avoid damaging it. Therefore, the detachable connection allows users to quickly replace different types or specifications of pressure fixture 2 according to different testing needs, improving the applicability and operational flexibility of the equipment.

[0046] See again Figure 2 The clamping assembly 3 includes a first fixing member 34, a first fixing hole 311 is provided on the top plate 31, and a second fixing hole is provided on the pressure fixture 2. The first fixing member 34 passes through the first fixing hole 311 and the second fixing hole to fix the pressure fixture 2 and the top plate 31.

[0047] In practical applications, the first fastener 34 is aligned with the first fixing hole 311 of the top plate 31 and the second fixing hole of the pressure fixture 2, and then inserted through them. The first fastener 34 can be a bolt, pin, or other suitable fastening structure to ensure sufficient fastening force during insertion.

[0048] With the first fastener 34 inserted, a firm connection is formed between the top plate 31 and the pressure fixture 2, preventing relative displacement caused by vibration or external force during subsequent use.

[0049] See again Figure 2 The clamping assembly 3 includes a second fixing member 35, and one of the first clamping plate 11 and the second clamping plate 12 is fixed to the base plate 32 by the second fixing member 35.

[0050] In practical applications, either the first clamping plate 11 or the second clamping plate 12 can be fixed to the base plate 32 via the second fixing member 35. For example, the first clamping plate 11 is fixed to the base plate 32, while one end of the first guide member 14 is fixedly connected to the first clamping plate 11 and the other end is slidably connected to the second clamping plate 12. This facilitates the movement of the second clamping plate 12 relative to the first clamping plate 11, thereby adjusting the size of the clamping space 13. The connection between the first clamping plate 11 and the base plate 32 improves the overall stability of the equipment and enhances the accuracy and reliability of the test.

[0051] Specifically, the second fastener 35 can be a bolt, screw, clip or other suitable fastening structure. The first clamping plate 11 has a first bolt hole on the side facing the base plate 32, and the base plate 32 has a second bolt hole. The second fastener 35 passes through the first bolt hole and the second bolt hole to fix the first clamping plate 11 and the base plate 32.

[0052] Furthermore, the terms "first" and "second" 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0054] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A test fixture, characterized in that, include: The side clamp includes a first clamping plate and a second clamping plate, and a clamping space is formed between the first clamping plate and the second clamping plate. Along a first direction, the first clamping plate and the second clamping plate can selectively approach each other for clamping the battery. A pressure fixture, along a second direction, is selectively positioned near the clamping space, the pressure fixture being used to compress the battery; The first direction and the second direction are set at an angle.

2. The test fixture according to claim 1, characterized in that, The side clamp includes a first guide extending along the first direction. One end of the first guide is connected to the first clamping plate, and the other end is connected to the second clamping plate. The first guide can move relative to the first clamping plate and / or the second clamping plate along the first direction, thereby allowing the first clamping plate and the second clamping plate to selectively move closer to or further away from each other.

3. The test fixture according to claim 2, characterized in that, One end of the first guide member is fixedly connected to the first clamping plate, and the other end is slidably connected to the second clamping plate.

4. The test fixture according to claim 3, characterized in that, The first guide member includes a guide rod and a sliding sleeve. One end of the guide rod is connected to the first clamping plate, and the other end passes through the second clamping plate. The sliding sleeve is slidably fitted on the guide rod and connected to the second clamping plate.

5. The test fixture according to claim 1, characterized in that, The side clamp includes a locking member that connects the first clamping plate and the second clamping plate to fix the first clamping plate and the second clamping plate.

6. The test fixture according to any one of claims 1 to 5, characterized in that, The test fixture includes a clamping assembly, which includes a base plate and a top plate. The side clamp is disposed between the base plate and the top plate. The pressure fixture is connected to the top plate. The top plate can selectively move closer to or further away from the base plate along the second direction to drive the pressure fixture to move along the second direction.

7. The test fixture according to claim 6, characterized in that, The clamping assembly further includes a second guide extending along the second direction, one end of which is connected to the base plate and the other end of which is connected to the top plate. The second guide can move relative to the base plate and / or the top plate along the second direction, thereby allowing the top plate to selectively move closer to or further away from the base plate along the second direction.

8. The test fixture according to claim 6, characterized in that, The press is detachably connected to the top plate.

9. The test fixture according to claim 6, characterized in that, The clamping assembly includes a first fixing member, the top plate has a first fixing hole, and the pressure tool has a second fixing hole. The first fixing member passes through the first fixing hole and the second fixing hole to fix the pressure tool and the top plate.

10. The test fixture according to claim 6, characterized in that, The clamping assembly includes a second fixing member, and one of the first clamping plate and the second clamping plate is fixed to the base plate by the second fixing member.

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