Battery cell clamping jig

Abstract

The utility model discloses a kind of electric core clamping jigs, it is related to electric core detection technical field.The specific including a pair of adjusting block, a pair of movable clamp block and push block.Two adjusting blocks are slidably connected in the first direction of bottom plate, and curve hole is set in the end of opposite direction;Two movable clamp blocks are connected on the adjusting block of corresponding side;Push block is slidably connected in the second direction of bottom plate, its side wall is connected with guide component towards adjusting block, guide component is attached in the inner wall of curve hole, for driving two adjusting blocks to be close to each other or away;First direction and second direction are perpendicular to each other in horizontal direction;The inner wall of curve hole is acted on by push block and guide component in the application, not only expand the clamping range of different specifications of electric core body, improve the clamping accuracy of electric core body, also prevent the problem that electric core body appears imaging area misplacement, detail loss when carrying out X-ray detection, even misjudgment internal defect.

Description

Technical Field

[0001] This utility model relates to the field of battery cell testing technology, and in particular to a battery cell clamping fixture. Background Technology

[0002] With the rapid development of the new energy industry, lithium batteries, as core energy storage components, have become a key requirement for end-use markets in terms of quality consistency and safety. According to current lithium battery industry standards, the microstructural parameters of the battery cell, such as the alignment of internal electrode plates, the integrity of the separator, and the interlayer gap, must be strictly controlled through high-precision testing methods (such as X-ray inspection) to avoid performance degradation or safety hazards caused by internal defects.

[0003] Currently, to meet the high requirements of X-ray inspection for cell positioning accuracy, existing technologies use fixed, non-adjustable fixtures. The main body of the fixture is an integrated rigid frame, and the size and position of the clamping components are fixed, which can only accommodate a single model or size of cell. The placement position and clamping force of the cell are completely determined by the fixed size of the fixture. Positioning is achieved through the physical contact between the rigid protrusions, grooves or pins on the inner wall of the fixture and the outer shell of the cell, ensuring that the relative position of the cell and the X-ray detector remains constant during inspection.

[0004] Because X-ray inspection requires high precision in cell positioning, existing technologies use fixed, non-adjustable fixtures to fix the cells. If the cell position is offset by millimeters, it can easily lead to misalignment of the imaging area, loss of details, or even misjudgment of internal defects, such as electrode alignment or diaphragm wrinkles. At the same time, this design means that the fixture can only be adapted to cells of a specific size. When inspecting cells of different models or specifications, the corresponding fixture needs to be replaced, which reduces inspection efficiency and increases equipment adaptation costs.

[0005] Therefore, this application aims to solve the problem of not being able to adapt to different sized battery cells while taking into account the accuracy of battery cell positioning. Utility Model Content

[0006] The main purpose of this utility model is to provide a battery cell clamping fixture, which aims to optimize the structure of the battery cell fixture, is suitable for battery cells of different sizes, and at the same time maintains the accuracy of battery cell positioning.

[0007] To achieve the above objectives, this utility model proposes a battery cell clamping fixture, comprising: A pair of adjusting blocks, both of which are slidably connected to the base plate in a first direction, and each of which has a curved hole at one of its opposite ends; A pair of movable clamps are connected to the adjusting block on the corresponding side; The push block is slidably connected to the base plate in the second direction. A guide component is connected to the side wall of the push block facing the adjustment block. The guide component is attached to the inner wall of the curved hole and is used to drive the two adjustment blocks to move closer or further apart. The first direction and the second direction are both perpendicular to each other in the horizontal direction.

[0008] Furthermore, one end of the adjusting block is connected to a first elastic element, and the other end of the first elastic element is connected to the base plate. When the push block and the guide component drive the two adjusting blocks to move closer to each other, the first elastic element provides a buffering force for the adjusting blocks.

[0009] Furthermore, the end of the adjusting block is connected to a first reset block, the first reset block is connected to the first elastic element on one side wall in the first direction, and the end of the first elastic element away from the first reset block is connected to the base plate.

[0010] Furthermore, it includes a support frame positioned between the two movable clamping blocks and connected to the base plate, with a second reset block mounted on the support frame and connected to the end of the first elastic member.

[0011] Furthermore, the support frame includes a support platform, which is connected to the base plate via a column. The support platform is located on the side of the adjusting block away from the base plate, and the second reset block is connected to the support platform.

[0012] Furthermore, a second elastic element is installed at one end of the push block in the second direction, and the other end of the second elastic element is connected to the base plate. When the push block and the guide component drive the two adjusting blocks away from each other, the second elastic element provides a restoring force to the push block.

[0013] Furthermore, a positioning block is provided on the base plate, and the second elastic element is connected between the push block and the positioning block.

[0014] Furthermore, the push block is provided with a positioning pin on one side wall in the second direction. When the push block and the guide component drive the two adjusting blocks closer together, the positioning pin is inserted into one side wall of the adjusting block.

[0015] Furthermore, both of the movable clamping blocks include a fixed block and a clamping block that are detachably connected vertically. The fixed block is connected to the adjusting block, and a clamping plate is connected to one of the opposing side walls of the two clamping blocks.

[0016] Furthermore, the clamping block has an assembly groove, the fixing block has a receiving groove, the clamping block is connected to the fixing block through the assembly groove, and the receiving groove restricts the bottom end of the clamping block.

[0017] The above technical solution has the following advantages: This application achieves free adjustment of the adjusting block and movable clamping block by using a pusher and guide component to act on the inner wall of the curved hole. This not only expands the clamping range of battery cells of different specifications and improves the clamping accuracy of the battery cells, but also prevents problems such as misalignment of the imaging area, loss of details, or even misjudgment of internal defects when the battery cells are subjected to X-ray inspection.

[0018] This application provides a positioning pin on the push block. When in the clamping state, the positioning pin is inserted into the adjustment block to ensure that it does not loosen during the clamping process and further improves the clamping accuracy. At the same time, a first elastic element and a second elastic element are respectively provided in the first direction and the second direction to improve the response speed during clamping and unlocking. Attached Figure Description

[0019] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model without the battery cell body; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the adjusting block of this utility model; Figure 5 This is a first-view structural diagram of the movable clamping block of this utility model; Figure 6 This is a second-view structural diagram of the movable clamping block of this utility model.

[0020] In the diagram: 1. Battery cell body; 2. Movable clamping block; 21. Fixing block; 211. Receiving groove; 22. Clamping block; 221. Assembly groove; 23. Clamping plate; 3. Adjusting block; 31. Induction plate; 32. First reset block; 33. First elastic element; 34. Second reset block; 35. Curved hole; 36. Guide component; 4. Base plate; 41. Positioning block; 5. Push block; 51. Second elastic element; 52. Positioning pin; 6. Support frame; 61. Pad block; 62. Support platform; 63. Column. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0022] The main technical problem this invention addresses is that existing stacked and wound battery systems use a single fixture that can only accommodate a specific size and type of battery. If different sizes or types of batteries need to be replaced, a new fixture must be manufactured, requiring operators to adjust it according to the different cell sizes, significantly increasing the operational complexity. Furthermore, if the equipment requires a large number of fixtures, it greatly increases the design and manufacturing costs of the X-RAY equipment. This invention, in its initial fixture design, incorporates fixtures that automatically clamp and prevent loosening of batteries of different sizes, thus enabling the fixture to accommodate batteries of various sizes. Operators simply place the battery product onto the fixture, significantly saving on equipment design and labor costs. The specific design is as follows: like Figure 1 , Figure 2 and Figure 4 As shown, a battery cell clamping fixture includes a pair of adjusting blocks 3, a pair of movable clamping blocks 2, and a push block 5. Both adjusting blocks 3 are slidably connected to the base plate 4 in a first direction, and each has a curved hole 35 at one of its opposing ends. The two movable clamping blocks 2 are connected to the adjusting blocks 3 on their corresponding sides. The push block 5 is slidably connected to the base plate 4 in a second direction, and a guide component 36 is connected to its side wall facing the adjusting blocks 3. The guide component 36 fits against the inner wall of the curved hole 35, used to move the two adjusting blocks 3 closer together or further apart. The first direction and the second direction are both perpendicular to each other in the horizontal direction. Figure 1 As shown by the arrow.

[0023] Specifically, the base plate 4 serves as the main mounting component, with a pair of adjusting blocks 3 slidingly connected in the first direction. The two adjusting blocks 3 can synchronously drive the movable clamping blocks 2 to move closer or further apart, thus clamping and fixing the battery cell body 1, facilitating positioning and measurement of battery cells 1 of different sizes. The distance between the two adjusting blocks 3 is adjusted by the cooperation of the guide component 36 on the adjusting block 3 with the curved hole 35. The curved hole 35 can be arc-shaped, bend-shaped, or similar. When the push block 5 moves the guide component 36 at both ends of the curved hole 35, the guide component 36 presses against the inner wall of the curved hole 35, thereby causing the two adjusting blocks 3 to open outwards or close inwards along the first direction, achieving clamping and unlocking of the battery cell body 1. Figure 4 This refers to the clamping state of the battery cell body 1.

[0024] The aforementioned curved hole 35 can have various configurations, including through holes and slots; no specific limitation is made here. Furthermore, the orientation of the curved hole 35 is also not limited. Figure 4For example, when push block 5 moves backward, it is in a clamping state; when push block 5 moves forward, it is in an unlocking state. Alternatively, by changing the tilt direction of the curved hole 35, push block 5 can be moved backward to an unlocking state and forward to a clamping state.

[0025] In the above scheme, the first and second directions are not explicitly defined; it is sufficient to select two mutually perpendicular directions on the base plate 4. Preferably, the first and second directions are the length and width directions of the base plate 4, respectively. The guide component 36 can be a block or a roller. In this application, the guide component 36 is preferably a cam follower, which cooperates with the curved hole 35 to... Figure 4 For example, the cam follower moves backward to open the movable clamping block 2 in the first direction, making it convenient for the external robot arm to grasp the battery cell body 1 on the fixture; the cam follower moves forward to close the movable clamping block 2 in the first direction and clamp and fix the battery cell body 1, so that the positioned battery cell body 1 can be detected by X-ray.

[0026] like Figure 3 and Figure 4 As shown, one end of the adjusting block 3 is connected to the first elastic element 33, and the other end of the first elastic element 33 is connected to the base plate 4. When the push block 5 and the guide component 36 drive the two adjusting blocks 3 to approach each other, the first elastic element 33 provides a buffering force for the adjusting block 3.

[0027] Specifically, the extension and retraction direction of the first elastic element 33 is the first direction. When the push block 5 drives the two adjusting blocks 3 to move closer to each other through the guide component 36, that is, the two movable clamping blocks 2 clamp the battery cell body 1, the adjusting block 3 promotes the clamping force of the two movable clamping blocks 2 on the battery cell body 1 through the corresponding first elastic element 33, thereby improving the response speed of the adjusting block 3. In this scheme, the position of the first elastic element 33 is not limited and can be set at any end of the adjusting block 3, provided that the end of the adjusting block 3 has a position for installing the first elastic element 33.

[0028] As a preferred embodiment, the end of the adjusting block 3 is connected to a first reset block 32, the first reset block 32 is connected to a first elastic member 33 on one side wall in the first direction, and the end of the first elastic member 33 away from the first reset block 32 is connected to the base plate 4.

[0029] Specifically, the first reset block 32 is installed at the end of the adjusting block 3 and is connected to the base plate 4 by the first elastic member 33. The base plate 4 can be fixed by a block, a rib, or a rolled edge.

[0030] like Figures 1-3As shown, this application includes a support frame 6, which is located between two movable clamping blocks 2 and connected to a base plate 4. A second reset block 34 is mounted on the support frame 6 and is connected to the end of a first elastic member 33. The support frame 6 is mounted on the base plate 4, above the adjusting block 3. The upper surface of the support frame 6 is used to place the battery cell body 1, which is located between the movable clamping blocks 2 on both sides. The push block 5, through a guide member 36, drives the two movable clamping blocks 2 to clamp the battery cell body 1 on the support frame 6.

[0031] In a preferred embodiment, the support frame 6 includes a support platform 62, which is connected to the base plate 4 via a column 63. The support platform 62 is located on the side of the adjusting block 3 away from the base plate 4, and the second reset block 34 is connected to the support platform 62. The four corners of the support platform 62 are raised by the column 63, positioning the support platform 62 above the adjusting block 3. A pad 61 can also be independently installed on the upper surface of the support platform 62. The pad 61 allows for soft contact with the battery cell body 1 and ensures that the battery cell body 1 is in a high position, which is beneficial for the movable clamping block 2 to hold the battery cell body 1.

[0032] like Figure 1 , Figure 3 and Figure 4 As shown, a second elastic element 51 is installed at one end of the push block 5 in the second direction, and the other end of the second elastic element 51 is connected to the base plate 4. When the push block 5 and the guide component 36 drive the two adjusting blocks 3 to move away from each other, the second elastic element 51 provides a restoring force for the push block 5.

[0033] Specifically, the push block 5 can be switched between the unlocked state and the clamping state by being pushed by an external cylinder. The second elastic element 51 is connected to the push block 5. When the push block 5 drives the guide component 36 to unlock from the curved hole 35, the second elastic element 51 drives the push block 5 to return to the initial position. That is, the second elastic element 51 provides the push block 5 with the restoring force, thereby improving the response speed of the push block 5's return. The push block 5 can also be connected to the second elastic element 51 on the base plate 4 through a block, rib, or rolled edge to achieve the return of the push block 5.

[0034] In this application, a positioning block 41 is preferably provided on the base plate 4, and a second elastic element 51 is connected between the push block 5 and the positioning block 41. The positioning block 41 is connected to the second elastic element 51, and the second elastic element 51 is used to apply the restoring force to the push block 5 and the positioning block 41 in a second direction.

[0035] like Figure 3 and Figure 4As shown, a positioning pin 52 is provided on one side wall of the push block 5 in the second direction. When the push block 5 and the guide component 36 drive the two adjusting blocks 3 closer together, the positioning pin 52 is inserted into one side wall of the adjusting block 3. Specifically, when the push block 5 is in the clamping state along the second direction, the positioning pin 52 is inserted and fixed to the adjusting block 3, thereby improving the positional accuracy of the adjusting block 3 and playing a role in preventing loosening, so as to prevent the adjusting block 3 from deviating in position and affecting the X-ray detection accuracy. When the push block 5 is in the unlocking state along the second direction, the positioning pin 52 will gradually separate from the adjusting block 3, and then the two adjusting blocks 3 will open outward along the first direction to prevent the positioning pin 52 from interfering with the adjusting block 3. The positional relationship of the positioning pin 52 is related to the clamping direction of the push block 5, which can be specifically determined according to the setting method of the curved hole 35, and will not be described in detail here.

[0036] like Figure 3 and Figure 4 As shown, a sensing plate 31 is also provided at one end of the adjusting block 3, which can be used to obtain the clamping and unlocking status of the adjusting block 3 through an external origin sensor, such as a photoelectric, magnetoelectric or mechanical limit switch.

[0037] like Figure 5 and Figure 6 As shown, each of the two movable clamping blocks 2 includes a fixed block 21 and a clamping block 22 that are detachably connected vertically. The fixed block 21 is connected to the adjusting block 3, and a clamping plate 23 is connected to one of the opposing side walls of the two clamping blocks 22. The fixed block 21 is mounted on the adjusting block 3 and moves synchronously with it. The clamping block 22 is detachably mounted on the fixed block 21, facilitating replacement for different battery cells and improving adaptability. The clamping plate 23 is the component that contacts the battery cell body 1, and its part that contacts the battery cell body 1 is made of a flexible material, such as plastic. In this application, the part in contact with the battery cell body 1 is preferably made of polyurethane, which has the characteristics of being soft and elastic, not easily deformed, non-conductive, and non-static, protecting the battery cell body 1 from damage and thus protecting the safety of the battery core. The operator adjusts the extreme positions of the movable clamping blocks 2 on the fixture according to the size of the battery cell body 1 to be produced, fixing the battery cell body 1 in the center of the fixture, facilitating inspection and ensuring the consistency of the inspection images.

[0038] Specifically, the clamping block 22 can be fixed by means of pins, rivets, snap-fits, etc., which are not limited here. As a preferred embodiment of this application, the clamping block 22 is provided with an assembly groove 221, and the fixing block 21 is provided with a receiving groove 211. The clamping block 22 is connected to the fixing block 21 through the assembly groove 221, and the receiving groove 211 restricts the bottom end of the clamping block 22. The assembly groove 221 on the clamping block 22 allows the clamping block 22 to be directly inserted into the top of the fixing block 21 in the vertical direction by gravity, thereby restricting the horizontal position of the clamping block 22. The assembly groove 221 is preferably convex to increase its contact area. The receiving groove 211 is also provided on the fixing block 21, and the bottom end of the clamping block 22 is placed in the receiving groove 211, which further restricts the horizontal position of the bottom end of the clamping block 22. In this application, a waist-shaped hole is also provided at the part where the fixing block 21 is connected to the adjusting block 3, so that the fixing block 21 can be finely adjusted in the first direction through the waist-shaped hole.

[0039] The first elastic element 33 and the second elastic element 51 of this application are preferably springs, but can also be elastic bodies such as rubber, wave washers, dampers, buffers, etc. The movable clamping block 2 and the push block 5 of this application are slidably connected to the base plate 4 by means of guide rails in the first direction and the second direction, respectively. Slide grooves can also be opened in both the first direction and the second direction of the base plate 4 so that the movable clamping block 2 and the push block 5 can slide on the base plate 4 in the first direction and the second direction, respectively.

[0040] Working principle: The battery cell body 1 is placed at the center of the pad 61. The cylinder acts on the push block 5, causing the guide component 36 on the push block 5 to move along the second direction in the curved hole 35. The guide component 36 presses against the inner wall of the curved hole 35, causing the adjusting blocks 3 on both sides to move closer to each other. Figure 4 As shown, the positioning pin 52 is also gradually inserted into the side wall of the adjusting block 3. The adjusting block 3 synchronously drives the two fixing blocks 21 of the battery cell body 1 to move towards each other in the first direction. The two fixing blocks 21 also synchronously drive the clamping block 22 to move closer to each other until the clamping plate 23 above the clamping block 22 is attached to the two side walls of the battery cell body 1, thus realizing the clamping and positioning of the battery cell body 1.

[0041] This application utilizes the push block 5 and guide component 36 acting on the inner wall of the curved hole 35 to achieve free adjustment of the adjusting block 3 and the movable clamping block 2. This not only improves the clamping and measurement of battery cell bodies 1 of different specifications and is compatible with battery cell bodies 1 of various sizes and types, but also the cooperation between the guide component 36 and the curved hole 35, as well as the insertion of the positioning pin 52 and the adjusting block 3, together play an anti-loosening role, improving the clamping accuracy of the battery cell body 1 and preventing problems such as misalignment of the imaging area, loss of details, or even misjudgment of internal defects when the battery cell body 1 is subjected to X-ray inspection.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery cell clamping fixture, characterized in that, include: A pair of adjusting blocks (3), both of which are slidably connected to the base plate (4) in the first direction, and both have curved holes (35) at their opposite ends; A pair of movable clamps (2) are connected to the adjusting block (3) on the corresponding side; Push block (5) is slidably connected to the base plate (4) in the second direction. A guide component (36) is connected to the side wall of the push block (5) facing the adjustment block (3). The guide component (36) is attached to the inner wall of the curved hole (35) and is used to drive the two adjustment blocks (3) to move closer or further apart. The first direction and the second direction are perpendicular to each other in the horizontal direction.

2. The battery cell clamping fixture as described in claim 1, characterized in that, One end of the adjusting block (3) is connected to a first elastic element (33), and the other end of the first elastic element (33) is connected to the base plate (4). When the push block (5) and the guide component (36) drive the two adjusting blocks (3) to move closer to each other, the first elastic element (33) provides a buffering force for the adjusting block (3).

3. The cell clamping fixture as described in claim 2, characterized in that, The end of the adjusting block (3) is connected to a first reset block (32), the first reset block (32) is connected to the first elastic element (33) on one side wall in the first direction, and the end of the first elastic element (33) away from the first reset block (32) is connected to the base plate (4).

4. The battery cell clamping fixture as described in claim 3, characterized in that, Includes a support frame (6), which is located between the two movable clamping blocks (2) and connected to the base plate (4). A second reset block (34) is installed on the support frame (6), and the second reset block (34) is connected to the end of the first elastic member (33).

5. The cell clamping fixture as described in claim 4, characterized in that, The support frame (6) includes a support platform (62), which is connected to the base plate (4) by a column (63). The support platform (62) is located on the side of the adjusting block (3) away from the base plate (4). The second reset block (34) is connected to the support platform (62).

6. The battery cell clamping fixture as described in claim 1, characterized in that, The push block (5) has a second elastic element (51) installed at one end in the second direction. The other end of the second elastic element (51) is connected to the base plate (4). When the push block (5) and the guide component (36) drive the two adjustment blocks (3) to move away from each other, the second elastic element (51) provides a restoring force for the push block (5).

7. The cell clamping fixture as described in claim 6, characterized in that, A positioning block (41) is provided on the base plate (4), and the second elastic element (51) is connected between the push block (5) and the positioning block (41).

8. The battery cell clamping fixture as described in claim 1, characterized in that, The push block (5) has a positioning pin (52) on one side wall in the second direction. When the push block (5) and the guide component (36) drive the two adjustment blocks (3) to move closer to each other, the positioning pin (52) is inserted into one side wall of the adjustment block (3).

9. The battery cell clamping fixture as described in claim 1, characterized in that, Both of the movable clamping blocks (2) include a fixed block (21) and a clamping block (22) that are detachably connected. The fixed block (21) is connected to the adjusting block (3), and a clamping plate (23) is connected to one side wall of each of the two clamping blocks (22).

10. The battery cell clamping fixture as described in claim 9, characterized in that, The clamping block (22) has an assembly groove (221), and the fixing block (21) has a receiving groove (211). The clamping block (22) is connected to the fixing block (21) through the assembly groove (221), and the receiving groove (211) restricts the bottom end of the clamping block (22).

Images