Battery formation clamp

Abstract

The battery formation clamp is characterized in that a plurality of assembly holes are formed in a base plate, insertion jigs are fixedly mounted in the assembly holes, each insertion jig comprises a base and a movable part, each base is provided with an insertion hole and a guide hole, three elastic pieces are fixedly connected to the positions, located in the insertion holes, of the bases, each movable part is provided with a guide column and a jacking column, each jacking column is provided with a through hole, and each guide column is provided with a through hole. And the base plate is fixedly connected with an optical shaft, and the optical shaft is movably provided with a pressing plate. When in use, the batteries are tidily placed on the workbench, the substrate is moved to the batteries, the plugging jig is aligned to the batteries, the batteries are plugged into the plugging holes of the plugging jig by downward pressing, at the moment, the elastic sheets are pushed away by the batteries and elastically deformed, the elastic sheets are in electrical contact with side electrodes of the batteries, and meanwhile, the elastic sheets elastically abut against the batteries, so that the batteries are plugged into the plugging holes of the plugging jig. The battery is fixed in the plugging hole, and the electrode at the top of the battery is electrically contacted with the vibrating needle, so that the electrode connection of the battery is quickly completed in batches, and the formation efficiency of the battery is improved.

Description

Technical Field

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

[0002] After battery production is completed, it needs to undergo a formation process, which is the first charging to activate the battery and enable it to perform normal charging and discharging functions. Currently, battery formation is mostly achieved in batches using jigs in a stacked manner. However, for some small batteries, the positive and negative electrodes are located at opposite ends, making it difficult for traditional jigs to accommodate these batteries and meet their batch formation requirements.

[0003] Chinese utility model patent CN215933679U relates to a battery formation fixture, comprising: a guide, a pressure plate, a base plate, a support plate, and a drive component. The base plate is disposed below the pressure plate, which is slidably mounted on the guide. The pressure plate has multiple first probes. The base plate has multiple second probes, which are opposite to the first probes. The support plate is slidably mounted on the guide, located between the pressure plate and the base plate, and has battery placement components on it. The drive component drives the pressure plate to slide along the guide, allowing the first and second probes to contact the opposite end faces of the battery, respectively. This utility model is applicable to small batteries. In use, batches of small batteries can be placed on the battery placement components, and the drive component drives the pressure plate to slide along the guide, allowing the first and second probes to contact the end faces of the battery, thereby achieving batch formation of batteries and improving the formation efficiency. However, it requires manual insertion of the batteries one by one into the fixture, which significantly affects the formation efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a battery formation fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a battery formation fixture, comprising a substrate, the substrate having multiple assembly holes, wherein a plug-in fixture is fixedly installed in the assembly holes, the plug-in fixture comprising a base and a movable component, the base having a plug-in hole and a guide hole, wherein a spring piece is fixedly connected to the base within the plug-in hole, the number of spring pieces being three and arranged in a circular array, a first terminal electrically connected to the spring piece being provided on the outer side of the base, the movable component having a guide post and a top post, the guide post being slidably engaged with the guide hole, the top post having a through hole, a spring pin being fixedly installed in the through hole, an optical axis being fixedly connected to the substrate, and a pressure plate being movably installed on the optical axis.

[0006] Preferably, the guide post is fixedly connected to a fastener through the guide hole.

[0007] Preferably, the base is fixedly connected to the spring piece by an insert injection molding process.

[0008] Preferably, the base is made of polyetheretherketone (PEEK).

[0009] Preferably, the substrate is provided with reinforcing ribs.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The substrate of this invention has multiple assembly holes, and a plug-in fixture is fixedly installed in the assembly holes. The plug-in fixture includes a base and a movable part. The base has a plug-in hole and a guide hole. A spring is fixedly connected to the base in the plug-in hole. There are three springs, which are arranged in a ring array. The movable part has a guide post and a top post. The guide post slides with the guide hole. The top post has a through hole, and a spring pin is fixedly installed in the through hole. In use, the battery is first neatly placed on the worktable. The substrate is moved to the battery, and the plug-in fixture is aligned with the battery. The battery is pressed down and inserted into the plug-in hole of the plug-in fixture. At this time, the spring is pushed away by the battery and undergoes elastic deformation. The spring makes electrical contact with the side electrode of the battery. At the same time, the spring elastically abuts against the battery, fixing the battery in the plug-in hole. The electrode on the top of the battery makes electrical contact with the spring pin. The electrode connection of the battery is completed quickly in batches, improving the battery formation efficiency.

[0012] After the battery formation is completed, this utility model uses a pressure plate to push a movable part, causing the top post of the movable part to press against the battery and quickly push the battery out of the insertion hole, thereby improving the battery formation efficiency. Attached Figure Description

[0013] Figure 1 This is a structural view of the present invention.

[0014] Figure 2 This is a structural view of the substrate of this utility model.

[0015] Figure 3 This is a partially enlarged structural view of the substrate of this utility model.

[0016] Figure 4 This is the first perspective structural view of the insertion fixture of this utility model.

[0017] Figure 5 This is a second perspective structural view of the insertion fixture of this utility model.

[0018] Figure 6 This is an exploded structural view of the insertion fixture of this utility model.

[0019] The diagram is labeled as follows: 1. Base plate, 2. Assembly hole, 3. Insertion fixture, 4. Base, 5. Movable part, 6. Insertion hole, 7. Guide hole, 8. Spring, 9. First terminal block, 10. Guide post, 11. Top post, 12. Through hole, 13. Spring pin, 14. Optical axis, 15. Pressure plate, 16. Fixing part, 17. Reinforcing rib. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] like Figures 1-6 As shown, this utility model provides a battery formation fixture, including a base plate 1. The base plate 1 has multiple assembly holes 2, and a connector fixture 3 is fixedly installed in the assembly holes 2. The connector fixture 3 includes a base 4 and a movable part 5. The base 4 has a connector hole 6 and a guide hole 7. A spring piece 8 is fixedly connected to the base 4 within the connector hole 6. There are three spring pieces 8 arranged in a circular array. A first terminal 9 electrically connected to the spring piece 8 is provided on the outer side of the base 4. The movable part 5 has a guide post 10 and a top post 11. The guide post 10 slides with the guide hole 7. The top post 11 has a through hole 12, and a spring pin 13 is fixedly installed in the through hole 12. An optical axis 14 is fixedly connected to the base plate 1, and a pressure plate 15 is movably installed on the optical axis. A fixing member 16 is fixedly connected to the guide post 10 through the guide hole 7. The spring pieces 8 are fixedly connected to the base 4 by an insert injection molding process. The base 4 is made of polyetheretherketone (PEEK). The base plate 1 has reinforcing ribs 17.

[0023] Through the above technical solution, the substrate 1 of this utility model is provided with multiple assembly holes 2, and a plug-in fixture 3 is fixedly installed in the assembly holes 2. The plug-in fixture 3 includes a base 4 and a movable part 5. The base 4 is provided with a plug-in hole 6 and a guide hole 7. A spring piece 8 is fixedly connected to the base 4 and located in the plug-in hole 6. There are 3 spring pieces 8, which are arranged in a ring array. The movable part 5 is provided with a guide post 10 and a top post 11. The guide post 10 is slidably engaged with the guide hole 7. The top post 11 is provided with a through hole 12, and a spring pin is fixedly installed in the through hole 12. 13. When using, first place the batteries neatly on the workbench, move the substrate 1 to the battery, and align the insertion jig 3 with the battery. Press down to insert the battery into the insertion hole 6 of the insertion jig 3. At this time, the spring 8 is pushed away by the battery and undergoes elastic deformation. The spring 8 makes electrical contact with the side electrode of the battery. At the same time, the spring 8 elastically abuts against the battery, fixing the battery in the insertion hole 6. The electrode on the top of the battery makes electrical contact with the spring pin 13, quickly completing the electrode connection of the battery in batches and improving the battery formation efficiency.

[0024] After the battery formation is completed, the present invention pushes the movable part 5 through the pressure plate 15, so that the top post 11 of the movable part 5 presses against the battery and quickly pushes the battery out of the insertion hole 6, thereby improving the battery formation efficiency.

[0025] Example 2:

[0026] like Figures 1-6 As shown, the substrate 1 of this embodiment has multiple mounting holes 2, and a connector fixture 3 is fixedly installed in each mounting hole 2. The connector fixture 3 consists of a base 4 and a movable component 5. The base 4 has a connector hole 6 and a guide hole 7. Three spring contacts 8 arranged in a circular array are fixedly connected in the connector hole 6. These spring contacts 8 are made of metal and are elastic. The outer side of the base 4 has a first terminal 9 that is electrically connected to the spring contacts 8 for connecting to an external circuit. The movable component 5 has a guide post 10 and a top post 11. The guide post 10 is slidably engaged with the guide hole 7 of the base 4. The top post 11 has a through hole 12, and a spring pin 13 is fixedly installed in the through hole 12. The substrate 1 is also fixedly connected to an optical axis 14, and a pressure plate 15 is movably installed on the optical axis 14.

[0027] When using this battery formation fixture, the batteries to be formed are first neatly arranged on the worktable. The substrate 1 is moved above the batteries, aligning the insertion holes 6 of each insertion jig 3 with the corresponding batteries. Then, the substrate 1 is pressed down, allowing the batteries to enter the insertion holes 6. As the batteries enter the insertion holes 6, the three spring clips 8 are pushed aside by the batteries and undergo elastic deformation. The spring clips 8 make close contact with the side electrodes of the batteries, and simultaneously, the elastic force fixes the batteries in the insertion holes 6. At this time, the electrode at the top of the battery contacts the spring pin 13 on the movable part 5, forming a circuit connection.

[0028] After connecting to an external power source via the first terminal 9, the battery can undergo formation processing. Since multiple insertion fixtures 3 operate simultaneously, the formation of multiple batteries can be completed at once, significantly improving production efficiency. The design of the spring contacts 8 ensures reliable contact with the battery electrodes without damaging the battery. Three spring contacts 8 arranged in a ring array provide uniform clamping force, ensuring the stability of the battery during the formation process.

[0029] After the formation process is complete, the movable component 5 is pushed by the pressure plate 15. The movable component 5 moves downward along the guide hole 7, and the spring pin 13 of the top post 11 continues to maintain contact with the top electrode of the battery, while the lower end face of the top post 11 abuts against the top of the battery. As the pressure plate 15 continues to press down, the top post 11 of the movable component 5 pushes the battery out of the insertion hole 6, completing the rapid unloading of the battery. The setting of the optical axis 14 ensures the smoothness of the movement of the pressure plate 15, ensuring that all movable components 5 move synchronously, realizing batch unloading.

[0030] The battery formation fixture of this embodiment is particularly suitable for small batteries with positive and negative electrodes located at opposite ends. The design of the insertion jig 3 enables rapid battery clamping and unloading while ensuring reliable electrode connections. The combined design of the spring piece 8 and spring pin 13 ensures stable electrical contact while preventing damage to the battery electrodes. The parallel operation of multiple insertion jigs 3 significantly improves battery formation efficiency, making it suitable for mass production needs. The entire operation process is simple and quick, reducing manual labor intensity and increasing the degree of production automation.

[0031] Example 3:

[0032] like Figures 1-6 As shown, in this embodiment, the guide post 10 passes through the guide hole 7 and is fixedly connected to the fixing member 16. The function of the fixing member 16 is to restrict the guide post 10 from disengaging from the guide hole 7 and prevent the movable part 5 from accidentally falling off during use. When the movable part 5 slides on the optical axis 14, the guide post 10 moves along the guide hole 7, and the fixing member 16 ensures that the guide post 10 is always kept within the guide hole 7, preventing the movable part 5 from falling off the base 4 due to external force. This design ensures the stability and reliability of the movable part 5 when pressing the battery, and prevents battery connection failure or equipment damage caused by the movable part 5 falling off.

[0033] The fastener 16 can take the form of a retaining ring, a nut, or other fastening structure. For example, threads can be machined at the end of the guide post 10 and tightened with a nut to prevent the guide post 10 from coming out of the guide hole 7. Alternatively, a retaining ring groove can be provided at the end of the guide post 10, and an elastic retaining ring can be installed to achieve fixation. Regardless of the form used, the fastener 16 must ensure that the guide post 10 slides freely within the guide hole 7 without being dislodged due to vibration or external force.

[0034] In actual operation, after the battery is inserted into the insertion hole 6, the spring piece 8 contacts the side electrode of the battery, while the spring pin 13 contacts the top electrode of the battery, completing the circuit connection. After formation, the pressure plate 15 presses down along the optical axis 14, pushing the movable part 5 to move, causing the top post 11 to press against the battery and push the battery out of the insertion hole 6. Since the guide post 10 is fixed in the guide hole 7 by the fixing part 16, the movement trajectory of the movable part 5 is strictly limited, ensuring that the top post 11 can accurately apply the thrust and avoiding battery ejection failure or damage due to the displacement of the movable part 5.

[0035] Furthermore, the fastener 16 facilitates equipment maintenance and assembly. When it is necessary to replace or adjust the moving part 5, the guide post 10 can be removed from the guide hole 7 simply by removing the fastener 16, without having to disassemble the entire base 4 or the insertion fixture 3, thus improving the maintainability of the equipment.

[0036] Example 4:

[0037] like Figures 1-6As shown, stable contact between the spring 8 and the battery electrode is crucial during battery formation. However, traditional welding or mechanical fixing methods suffer from insufficient connection strength and high processing costs. This embodiment uses an insert injection molding process to form an integrated structure between the metal spring 8 and the plastic base 4. The permanent positioning of the spring 8 is achieved through the encapsulation and fixing effect of the injection molding material. When molten plastic is injected into the mold cavity, the plastic material fully fills the pre-set positioning hole and surrounding gap of the spring 8, forming a mechanical interlocking structure after cooling and solidification.

[0038] This connection method prevents the spring piece 8 from shifting under radial pressure while maintaining its elastic deformation capability. Because the spring piece 8 is precisely positioned before injection molding, the three spring pieces 8 within the molded insertion hole 6 maintain a strict circular array distribution, ensuring uniform contact pressure with the side of the cylindrical battery. The insert injection molding process also allows for the simultaneous molding of the first terminal 9, which is conductive to the spring piece 8, on the outside of the base 4, achieving integrated manufacturing of the circuit connection. This process completes structural fixation and electrical connection in a single injection molding operation, reducing three processing steps compared to traditional welding. The full circumferential wrapping of the spring piece 8 by the injection molding material effectively prevents electrolyte corrosion and extends the service life of the fixture.

[0039] Example 5:

[0040] like Figures 1-6 As shown, the base 4 in this embodiment is made of polyetheretherketone (PEEK). PEEK is a high-performance thermoplastic with excellent mechanical properties, chemical resistance, and high-temperature resistance. In this embodiment, PEEK was chosen as the material for base 4 primarily due to its specific application requirements during the battery formation process. The high strength of PEEK ensures that base 4 maintains structural stability during long-term use and will not deform or wear due to frequent battery insertion and removal operations. Simultaneously, its excellent insulation properties effectively prevent current leakage along unintended paths, ensuring electrical safety during the battery formation process.

[0041] In the specific implementation process, the polyetheretherketone (PEEK) base 4 is manufactured using injection molding. This process enables the one-time molding of complex geometries, and is particularly suitable for the precise molding of the insertion holes 6 and guide holes 7 on the base 4. The injection-molded PEEK base 4 features good dimensional stability and a high surface finish, which provides a good foundation for the subsequent installation of the spring clip 8 and the mating of the moving parts 5. The inner wall of the insertion hole 6 of the base 4 is precision machined to ensure the accuracy of the fit with the battery shape, while providing a reliable installation reference for the spring clip 8. The heat distortion temperature of PEEK material is as high as 250°C or more, which allows the base 4 to maintain its shape stability even when the battery heats up during the battery formation process, without softening or deformation.

[0042] Example 6:

[0043] like Figures 1-6 As shown, the substrate 1 in this embodiment is provided with reinforcing ribs 17. During the battery formation process, the substrate 1, as the core component supporting multiple insertion jigs 3, needs to withstand mechanical stress from multiple directions. When processing batteries in batches, the substrate 1 not only needs to support the weight of all the insertion jigs 3, but also needs to resist deformation during repeated pressing and lifting. Especially in continuous production environments, the substrate 1 may experience slight bending or twisting due to long-term stress. This deformation will directly affect the alignment accuracy between the insertion jigs 3 and the battery, leading to problems such as poor electrode contact or battery positioning misalignment.

[0044] The addition of reinforcing ribs 17 fundamentally alters the mechanical properties of the substrate 1. In this embodiment, the reinforcing ribs 17 are integrally formed with the substrate 1, and their distribution has been optimized through finite element analysis. The reinforcing ribs 17 are arranged parallel to each other along the length of the substrate 1, while transverse reinforcing ribs 17 are added in key stress areas perpendicular to the length direction, forming a grid-like support system. This layout effectively disperses the downward pressure on the substrate 1 in the Z-axis direction (perpendicular to the plane of the substrate 1) while suppressing the torsional tendency in the XY plane. When the pressure plate 15 applies downward pressure through the optical axis 14, the reinforcing ribs 17 significantly improve the bending stiffness of the substrate 1 by increasing the moment of inertia of the cross section, ensuring that all insertion fixtures 3 remain coplanar.

[0045] During dynamic operation, the reinforcing rib 17 also acts as a vibration damper. When rapidly changing battery batches, the substrate 1 may experience slight vibrations due to inertia, and the rib-like structure of the reinforcing rib 17 can dissipate vibration energy through internal friction. Specifically, the closed cavity formed by the reinforcing rib 17 and the substrate 1 alters the propagation path of the vibration wave, allowing the mechanical energy to be absorbed by the material through multiple reflections. This characteristic is particularly beneficial for high-speed formation production lines, preventing fluctuations in contact resistance between the spring 8 and the battery electrodes caused by equipment vibration.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A battery formation fixture, comprising a substrate, characterized in that, The substrate has multiple assembly holes, and a plug-in fixture is fixedly installed in each assembly hole. The plug-in fixture includes a base and a movable component. The base has a plug-in hole and a guide hole. A spring is fixedly connected to the base and located within the plug-in hole. There are three springs arranged in a circular array. A first terminal is provided on the outer side of the base, which is electrically connected to the spring. The movable component has a guide post and a top post. The guide post slides with the guide hole. The top post has a through hole, and a spring pin is fixedly installed in the through hole. An optical axis is fixedly connected to the substrate, and a pressure plate is movably installed on the optical axis.

2. The battery formation fixture according to claim 1, characterized in that, The guide post is fixedly connected to a fastener through the guide hole.

3. The battery formation fixture according to claim 1, characterized in that, The base is fixedly connected to the spring piece by an insert injection molding process.

4. A battery formation fixture according to claim 1, characterized in that, The base is made of polyetheretherketone.

5. A battery formation fixture according to claim 1, characterized in that, The substrate is provided with reinforcing ribs.

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