Formation clamp

Abstract

The utility model discloses a formation clamp which comprises two groups of supporting seats, a guide rod and a first screw rod which are arranged between the two groups of supporting seats, a driving mechanism which is in transmission connection with the first screw rod, a plurality of groups of formation laminates which are sleeved on the guide rod and the first screw rod, an elastic movable end assembly and an output end assembly, the adjacent formation laminates are movably connected, and first elastic pieces are arranged between the elastic movable end assemblies and the adjacent supporting seats; the output end assembly is connected with at least one group of formation laminates, the output end assembly is in threaded engagement with the first lead screw, and under the action of the first lead screw, the output end assembly moves to apply pressure or tension to the formation laminates, so that the formation laminates move along the guide rods. According to the utility model, the first screw rod drives the output end assembly to move so as to accurately control the pressure or tension on the formation laminate and ensure that the whole formation laminate is stably pressed and separated, and the first elastic piece buffers the axial load and avoids rigid impact.

Description

Technical Field

[0001] This utility model relates to the field of battery formation technology, specifically a formation fixture. Background Technology

[0002] Formation fixtures are used in the battery formation process to clamp the battery between formation layers, apply pressure and heat to the battery to complete the formation. In existing technologies, the formation layers are generally moved by cylinders, which makes them susceptible to rigid impacts from axial loads, causing damage to the battery. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a formation clamp that drives a first lead screw to rotate via a reducer gear set, thereby moving the output end assembly to apply pressure or tension to the formation layer, ensuring stable clamping or separation of the formation layer and guaranteeing stable clamping or release of the battery. Furthermore, a first elastic element is provided between the elastic movable end assembly and the adjacent support base to buffer axial loads, avoid rigid impacts, and prevent battery damage from rigid impacts; it also prevents the elastic movable end assembly from moving along with the formation layer during separation.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] The transformation fixture includes:

[0006] Two sets of support seats;

[0007] A guide rod is disposed between the two sets of support seats;

[0008] The first lead screw is rotatably disposed between the two sets of support seats and is arranged parallel to the guide rod;

[0009] A drive mechanism is connected to the first lead screw and is used to control the rotation of the first lead screw;

[0010] Multiple sets of formation plates are sleeved on the guide rod and the first lead screw, and the adjacent formation plates are movably connected to each other;

[0011] An elastic movable end assembly is sleeved on the guide rod and the first lead rod, located at one end of the multiple sets of chemically formed layers, and a first elastic element is provided between the elastic movable end assembly and the adjacent support seat;

[0012] The output end assembly is sleeved on the guide rod and the first lead screw, and is located at the other end of the multiple sets of formation plates. The output end assembly is connected to at least one set of formation plates and is threadedly engaged with the first lead screw. Under the action of the first lead screw, the output end assembly moves along the guide rod to apply pressure or tension to the formation plates, causing the formation plates to move along the guide rod.

[0013] A pressure sensor is also provided between the elastic movable end assembly and the adjacent support.

[0014] The elastic movable end assembly includes a movable plate movably sleeved on the guide rod and the first lead rod, and a first heat insulation plate, wherein the first heat insulation plate is located between the movable plate and the formation layer plate.

[0015] The output end assembly includes two support plates movably sleeved on the guide rod and the first lead screw, a second elastic element disposed between the two support plates, and a nut on one of the support plates that is threadedly engaged with the first lead screw.

[0016] The output end assembly also includes a second heat insulation plate sleeved on the guide rod and the first lead screw, the second heat insulation plate being located on the side close to the formation layer plate.

[0017] The adjacent formation plates are connected by connecting pieces, each connecting piece having an adjustment hole extending along its length. One of the holes is fixedly or rotatably connected to the connecting piece, and the other has a limiting post adapted to the adjustment hole.

[0018] The drive mechanism includes a reducer gear set, which includes a geared motor, a drive wheel connected to the output shaft of the geared motor, a driven wheel meshing with the drive wheel, and a first lead screw gear meshing with the driven wheel. The first lead screw gear is located at the end of the first lead screw.

[0019] The first lead screw and guide rod are each set in four groups and are distributed in a matrix on the edge of the output end assembly; the elastic movable end assembly, the output end assembly, and the formation layer plate are all provided with guide sleeves adapted to the guide rods.

[0020] The chemical formation fixture further includes a contact moving mechanism, which includes a second lead screw, a third lead screw, a drive shaft, and a plate. The second and third lead screws are rotatably mounted on two sets of support seats, and the drive shaft is rotatably mounted between the two sets of support seats and perpendicular to the second and third lead screws. The bottoms of the second and third lead screws are respectively provided with a first drive wheel and a second drive wheel. The two ends of the drive shaft are respectively provided with a third drive wheel that meshes with the first drive wheel and a fourth drive wheel that meshes with the second drive wheel. The two ends of the plate are threadedly fitted onto the second and third lead screws. The threads of the second and third lead screws rotate in opposite directions to allow the plate to move synchronously. Multiple contacts are movably mounted on the plate.

[0021] The contact is movably mounted on the strip via a connecting assembly. The connecting assembly includes a guide post mounted on the formation layer and a movable seat that can move along the guide post. The contact is mounted on the movable seat. The strip is provided with a guide groove extending along its length. The movable seat is provided with a bearing screw that is adapted to the guide groove, so that the movable seat is movably mounted on the strip.

[0022] Compared with the prior art, the advantages of this utility model are as follows:

[0023] 1. This utility model drives the first lead screw to rotate through a drive mechanism, thereby driving the output end component to move, so as to precisely control the pressure or tension on the formation layer plate, so that the formation layer plate is stably pressed or separated as a whole. This solves the problems of uneven pressure and easy loosening of traditional formation fixtures, and ensures that the battery is stably pressed or smoothly separated as a whole throughout the formation process, avoiding battery quality defects caused by unstable clamping. The first elastic element set between the elastic movable end component and the adjacent support base of this utility model is used to buffer axial load, avoid rigid impact, and prevent the battery from being damaged by rigid impact. When the formation layer plate needs to be separated, the setting of the first elastic element can prevent the movement of the output end component from directly dragging the elastic movable end component, and avoid the movement of the elastic movable end component during the overall separation operation of the formation layer plate, ensuring that the formation layer plate can be separated smoothly and independently, and avoiding operation jamming, efficiency reduction or equipment component damage caused by accidental pulling.

[0024] 2. A pressure sensor is also provided between the elastic movable end component of this utility model and the adjacent support base to realize real-time monitoring of pressure during the application of force and avoid excessive pressure.

[0025] 3. The output end assembly of this utility model includes two support plates and a second elastic element disposed between the two support plates. It can effectively absorb and buffer the axial impact load generated by the action of the drive mechanism (especially the moment of clamping), avoid rigid impact, and also ensure that the pressure of the formation layer is evenly distributed when clamping the battery, avoiding local overload. It solves the key pain point that traditional rigid formation fixtures are prone to causing physical damage (such as shell deformation and internal structure damage) to brittle batteries (such as lithium battery cells), and improves equipment safety and battery yield.

[0026] 4. The first and second heat insulation plates of this utility model are designed to prevent the heat generated during the heating of the chemical forming layer from affecting the other components.

[0027] 5. The contact moving mechanism of this utility model allows the position of the contact to be adjusted to adapt to battery electrode sheets of different models, sizes and specifications, and to meet the diverse battery formation process requirements. Attached Figure Description

[0028] Appendix Figure 1This is a schematic diagram of the chemical formation fixture of this utility model.

[0029] Appendix Figure 2 This is a schematic diagram of the drive mechanism of this utility model.

[0030] Appendix Figure 3 This is a structural schematic diagram of the elastic movable end component of this utility model.

[0031] Appendix Figure 4 This is a structural schematic diagram of the output end component of this utility model.

[0032] Appendix Figure 5 It is attached Figure 1 Enlarged view of part A in the image.

[0033] Appendix Figure 6 This is a schematic diagram of the contact moving mechanism and the formation layer plate of this utility model.

[0034] Appendix Figure 7 It is attached Figure 6 A partially enlarged schematic diagram of the contact moving mechanism.

[0035] Appendix Figure 8 This is a schematic diagram of the contact moving mechanism of this utility model.

[0036] The following are the reference numerals in the attached diagram: 1. Support base; 11. Elongated hole; 2. Guide rod; 3. First lead screw; 4. Formation layer plate; 5. Elastic movable end assembly; 51. First elastic element; 52. Pressure sensor; 53. Movable plate; 54. First heat insulation plate; 6. Output end assembly; 61. Support plate; 62. Second elastic element; 63. Lead nut; 64. Second heat insulation plate; 7. Connecting piece; 71. Adjustment hole; 72. Limiting post; 8. Reducer gear set; 81. 82. Gearbox; 83. Driven wheel; 84. Lead screw and gear; 9. Contact moving mechanism; 91. Contact; 92. Second lead screw; 921. Handwheel; 93. Third lead screw; 94. Drive shaft; 95. First drive wheel; 96. Second drive wheel; 97. Third drive wheel; 98. Fourth drive wheel; 99. Slat; 991. Guide groove; 90. Connecting assembly; 901. Guide post; 902. Moving seat; 903. Bearing screw. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar words used in this utility model specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connection" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] like Figure 1-8 As shown, this utility model provides a chemical formation fixture, including two sets of support seats 1, guide rods 2, first lead screws 3, drive mechanism, multiple sets of chemical formation plates 4, elastic movable end assembly 5, and output end assembly 6.

[0040] like Figure 2 As shown, the guide rod 2 is disposed between the two sets of support seats 1; the first lead screw 3 is rotatably disposed between the two sets of support seats 1 and arranged parallel to the guide rod 2; the driving mechanism is connected to the first lead screw 3 for transmission and is used to control the rotation of the first lead screw 3; multiple sets of formation plates 4 are sleeved on the guide rod 2 and the first lead screw 3, and adjacent formation plates 4 are movably connected to each other.

[0041] like Figure 2 , Figure 3As shown, the elastic movable end assembly 5 is sleeved on the guide rod 2 and the first lead screw 3, located at one end of the multiple sets of formation plates 4. A first elastic element 51 is provided between the elastic movable end assembly 5 and the adjacent support seat 1. The first elastic element 51 can be a tension spring. Through the elastic deformation of the first elastic element 51, pressure fluctuations are effectively absorbed, axial loads are buffered, rigid impacts are avoided, and the battery is prevented from being damaged by rigid impacts. It can also prevent the elastic movable end assembly 5 from moving together when the formation plates 4 separate.

[0042] like Figure 2 , Figure 4 As shown, the output end assembly 6 is sleeved on the guide rod 2 and the first lead screw 3, located at the other end of the multiple sets of formation plates 4. The output end assembly 6 is connected to at least one set of formation plates 4, and the output end assembly 6 is threadedly engaged with the first lead screw 3. Under the action of the first lead screw 3, the output end assembly 6 moves along the guide rod 2 to apply pressure or tension to the formation plates 4, causing the formation plates 4 to move along the guide rod 2.

[0043] The elastic movable end component 5 and the output end component 6 of this utility model can be fixedly or movably connected to the adjacent formation layer plate 4. The formation layer plate 4 is existing technology. The first lead screw 3 is controlled to rotate by the drive mechanism, thereby causing the output end component 6 to move along the guide rod 2. The movement of the output end component 6 will apply pressure or tension to the formation layer plate 4, so that multiple sets of formation layer plates 4 can move stably along the guide rod 2, realizing the overall clamping or separation of the formation layer plate 4, ensuring the stability of clamping or releasing the battery, and realizing the formation operation of the battery. In addition, the first elastic element 51 provided between the elastic movable end component 5 and the adjacent support base 1 is used to buffer the axial load, avoid rigid impact, and prevent the battery from being damaged by rigid impact. It also prevents the elastic movable end component 5 from moving together when the formation layer plate 4 is separated.

[0044] Furthermore, such as Figure 3 As shown, a pressure sensor 52 is also provided between the elastic movable end component 5 and the adjacent support 1 to realize real-time monitoring of pressure during the force application process and avoid excessive pressure.

[0045] Furthermore, such as Figure 3 As shown, the elastic movable end assembly 5 includes a movable plate 53 and a first heat insulation plate 54 movably sleeved on the guide rod 2 and the first lead screw 3. The first heat insulation plate 54 is located between the movable plate 53 and the formation layer plate 4. The movable plate 53 and the first heat insulation plate 54 can be fixedly connected. The first elastic element 51 and the pressure sensor 52 can be disposed between the movable plate 53 and the adjacent support seat 1. The first heat insulation plate 54 can isolate the heat of the formation layer plate 4, preventing the pressure sensor 52 and other components from being damaged by heat.

[0046] Furthermore, such as Figure 4 As shown, the output end assembly 6 includes two support plates 61 movably sleeved on the guide rod 2 and the first lead screw 3, and a second elastic element 62 disposed between the two support plates 61. One of the support plates 61 is provided with a nut 63 that threadedly engages with the first lead screw 3. The second elastic element 62 can be a spring, which can further buffer axial loads, avoid rigid impacts, and also ensure that the pressure of the formation layer plate 4 is evenly distributed when pressing the battery, avoiding local overload.

[0047] Furthermore, such as Figure 4 As shown, the output end assembly 6 further includes a second heat insulation plate 64 sleeved on the guide rod 2 and the first lead screw 3. The second heat insulation plate 64 is located on the side close to the formation layer plate 4. The second heat insulation plate 64 can be fixedly connected to the adjacent support plate 61. The setting of the second heat insulation plate 64 isolates the heat of the formation layer plate 4, avoiding any impact on the drive mechanism, etc.

[0048] In one implementation, such as Figure 5 As shown, adjacent formation plates 4 are connected by connecting pieces 7. Each connecting piece 7 has an adjustment hole 71 extending along its length. One adjustment hole 71 is fixedly or rotatably connected to the connecting piece 7, while the other has a limiting post 72 adapted to the adjustment hole 71. The adjustment hole 71 can be a blind hole or a through hole. Furthermore, by setting adjustment holes 71 of different lengths, the maximum distance between two adjacent sets of formation plates 4 can be adjusted to accommodate batteries of different thicknesses.

[0049] Furthermore, the elastic movable end assembly 5 and the output end assembly 6 can be fixedly connected to the adjacent formation layer 4 or connected through the connecting piece 7. One of them is fixedly or rotatably connected to the connecting piece 7, and the other is provided with a limiting post 72 adapted to the adjustment hole 71.

[0050] In one implementation, such as Figure 4 As shown, the drive mechanism includes a reducer gear set 8, which includes a reducer motor 81, a drive wheel 82 connected to the output shaft of the reducer motor 81, a driven wheel 83 meshing with the drive wheel 82, and a lead screw gear 84 meshing with the driven wheel 83. The lead screw gear 84 is located at the end of the first lead screw 3.

[0051] In this embodiment, the geared motor 81 operates and is driven by the drive wheel 82, driven wheel 83, and lead screw gear 84, causing the first lead screw 3 to rotate and drive the output end assembly 6 to move. The output end assembly 6 applies pressure or tension to the formation layer plate 4, thereby causing the formation layer plate 4 to be pressed or separated as a whole, so as to press and release the battery.

[0052] In one embodiment, the first lead screw 3 and guide rod 2 are each configured as four sets, and are distributed in a matrix at the edge of the output end assembly 6. In this embodiment, each first lead screw 3 is provided with a lead screw gear 84 that meshes with the driven wheel 83. Driven by the reducer gear set 8, the four sets of first lead screws 3 rotate synchronously, which can evenly distribute the load, improve the movement stability of the formation layer 4, and also ensure the uniformity of the pressure applied to the battery.

[0053] In one embodiment, the elastic movable end assembly 5, the output end assembly 6, and the formation layer plate 4 are all provided with guide sleeves adapted to the guide rod 2 to ensure smooth axial movement.

[0054] In one embodiment, such as Figures 6-8 The chemical formation fixture also includes a contact moving mechanism 9, which comprises a second lead screw 92, a third lead screw 93, a transmission shaft 94, and a strip 99. The second lead screw 92 and the third lead screw 93 are rotatably mounted on two sets of support seats 1, respectively. The transmission shaft 94 is rotatably mounted between the two sets of support seats 1 and perpendicular to the second lead screw 92 and the third lead screw 93. The bottom of the second lead screw 92 and the third lead screw 93 are respectively provided with a first transmission wheel 95 and a second transmission wheel 96. The two ends of the transmission shaft 94 are respectively provided with a third transmission wheel 97 that meshes with the first transmission wheel 95 and a fourth transmission wheel 98 that meshes with the second transmission wheel 96. The two ends of the strip 99 are threadedly fitted onto the second lead screw 92 and the third lead screw 93. The threads of the second lead screw 92 and the third lead screw 93 have opposite directions of rotation so that the strip 99 moves synchronously. Multiple contacts 91 are movably mounted on the strip 99. The support seat 1 is provided with an elongated hole 11 for the strip 99 to move up and down. The top of the second lead screw 92 extends upward and is equipped with a handwheel 921 or a drive motor. Two sets of contact moving mechanisms 9 are arranged opposite each other, and the contacts 9 on the two sets are respectively connected to the positive and negative terminals of the battery.

[0055] In this embodiment, the first transmission wheel 95, the second transmission wheel 96, the third transmission wheel 97, and the fourth transmission wheel 98 can be bevel gears. Rotating the handwheel 921 or starting the drive motor drives the second lead screw 92 to rotate, thereby causing the first transmission wheel 95 to drive the third transmission wheel 97 to rotate. The power is transmitted to the fourth transmission wheel 98 via the transmission shaft 94. The rotation of the fourth transmission wheel 98 drives the second transmission wheel 96 to rotate (in the opposite direction to the rotation of the second transmission wheel 96), thereby causing the third lead screw 93 to rotate in the opposite direction relative to the second lead screw 92. Since the threads of the second lead screw 92 and the third lead screw 93 have opposite directions of rotation, the strip 99 has the same running direction under the action of the second lead screw 92 and the third lead screw 93, realizing the stable movement of the strip 99. This allows the position of the contact 91 to be adjusted to adapt to battery electrode sheets of different models, sizes, and specifications, meeting the diverse battery formation process requirements.

[0056] In one embodiment, such as Figure 8 As shown, the contact 91 is movably mounted on the strip 99 via a connecting assembly 90. The connecting assembly 90 includes a guide post 901 mounted on the formation layer 4 and a movable seat 902 that can move along the guide post 901. The contact 91 is mounted on the movable seat 902. The strip 99 is provided with a guide groove 991 extending along the length direction. The movable seat 902 is provided with a bearing screw 903 that is adapted to the guide groove 991, so that the movable seat 902 is movably mounted on the strip 99.

[0057] In this embodiment, the guide groove 991 can be a "T-shaped" groove, and the bearing screw 903 rolls within the guide groove 991 to reduce friction. The bearing screw 903 also allows the movable seat 902 to deflect slightly, preventing the contact 91 from making hard contact with the electrode and causing damage. The guide post 901 is set on the formation layer plate 4 and moves with the formation layer plate 4, thereby driving the contact 91 to move with the formation layer plate 4. At the same time, under the transmission of the second lead screw 92, the third lead screw 93, and the transmission shaft 94, the plate 99 drives the movable seat 902 to move, thereby allowing the contact 91 to move up and down to adjust the vertical position of the contact 91, adapting to battery electrodes of different models, sizes, and specifications, and meeting the diverse battery formation process requirements.

[0058] Those skilled in the art should understand that the specific embodiments described above are merely examples and not limitations. Various modifications, combinations, partial combinations, and substitutions can be made to the embodiments of this utility model according to design requirements and other factors, as long as they are within the scope of the appended claims or their equivalents, and thus fall within the scope of the rights to be protected by this utility model.

Claims

1. A chemical conversion fixture, characterized in that, include: Two sets of support seats; A guide rod is disposed between the two sets of support seats; The first lead screw is rotatably disposed between the two sets of support seats and is arranged parallel to the guide rod; A drive mechanism is connected to the first lead screw and is used to control the rotation of the first lead screw; Multiple sets of formation plates are sleeved on the guide rod and the first lead screw, and the adjacent formation plates are movably connected to each other; An elastic movable end assembly is sleeved on the guide rod and the first lead rod, located at one end of the multiple sets of chemically formed layers, and a first elastic element is provided between the elastic movable end assembly and the adjacent support seat; The output end assembly is sleeved on the guide rod and the first lead screw, and is located at the other end of the multiple sets of formation plates. The output end assembly is connected to at least one set of formation plates and is threadedly engaged with the first lead screw. Under the action of the first lead screw, the output end assembly moves along the guide rod to apply pressure or tension to the formation plates, causing the formation plates to move along the guide rod.

2. The chemical formation fixture according to claim 1, characterized in that, A pressure sensor is also provided between the elastic movable end assembly and the adjacent support.

3. The chemical formation fixture according to claim 1, characterized in that, The elastic movable end assembly includes a movable plate movably sleeved on the guide rod and the first lead rod, and a first heat insulation plate, wherein the first heat insulation plate is located between the movable plate and the formation layer plate.

4. The chemical formation fixture according to claim 1, characterized in that, The output end assembly includes two support plates movably sleeved on the guide rod and the first lead screw, a second elastic element disposed between the two support plates, and a nut on one of the support plates that is threadedly engaged with the first lead screw.

5. The chemical formation fixture according to claim 4, characterized in that, The output end assembly also includes a second heat insulation plate sleeved on the guide rod and the first lead screw, the second heat insulation plate being located on the side close to the formation layer plate.

6. The chemical formation fixture according to claim 1, characterized in that, The adjacent formation plates are connected by connecting pieces, each connecting piece having an adjustment hole extending along its length. One of the holes is fixedly or rotatably connected to the connecting piece, and the other has a limiting post adapted to the adjustment hole.

7. The chemical formation fixture according to claim 1, characterized in that, The drive mechanism includes a reducer gear set, which includes a geared motor, a drive wheel connected to the output shaft of the geared motor, a driven wheel meshing with the drive wheel, and a first lead screw gear meshing with the driven wheel. The first lead screw gear is located at the end of the first lead screw.

8. The chemical formation fixture according to claim 1, characterized in that, The first lead screw and guide rod are each set in four groups and are distributed in a matrix on the edge of the output end assembly; the elastic movable end assembly, the output end assembly, and the formation layer plate are all provided with guide sleeves adapted to the guide rods.

9. The chemical formation fixture according to claim 1, characterized in that, The chemical formation fixture further includes a contact moving mechanism, which includes a second lead screw, a third lead screw, a drive shaft, and a plate. The second and third lead screws are rotatably mounted on two sets of support seats, and the drive shaft is rotatably mounted between the two sets of support seats and perpendicular to the second and third lead screws. The bottoms of the second and third lead screws are respectively provided with a first drive wheel and a second drive wheel. The two ends of the drive shaft are respectively provided with a third drive wheel that meshes with the first drive wheel and a fourth drive wheel that meshes with the second drive wheel. The two ends of the plate are threadedly fitted onto the second and third lead screws. The threads of the second and third lead screws rotate in opposite directions to allow the plate to move synchronously. Multiple contacts are movably mounted on the plate.

10. The chemical formation fixture according to claim 9, characterized in that, The contact is movably mounted on the strip via a connecting assembly. The connecting assembly includes a guide post mounted on the formation layer and a movable seat that can move along the guide post. The contact is mounted on the movable seat. The strip is provided with a guide groove extending along its length. The movable seat is provided with a bearing screw that is adapted to the guide groove, so that the movable seat is movably mounted on the strip.

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