Nail pressing piece and battery helium charging nail pressing mechanism

Abstract

The utility model relates to a nail pressing piece and a battery helium charging nail pressing mechanism, and belongs to the technical field of batteries. The nail pressing piece is used for a battery helium charging nail pressing mechanism and comprises a first body, a second body and a third body, and the first body is provided with a first nail pressing channel and a nail feeding channel; the second main body is provided with a second nail pressing channel, and the second nail pressing channel is communicated with the first nail pressing channel and the nail feeding channel; the third main body is provided with a third nail pressing channel, the third nail pressing channel is communicated with the second nail pressing channel, and the third main body is further provided with a helium filling channel communicated with the third nail pressing channel; wherein the first main body, the second main body and the third main body are connected with one another, the first nail pressing channel, the second nail pressing channel and the third nail pressing channel are communicated in sequence, and the second main body is configured to be matched with a plastic nail to enable the plastic nail to block the second nail pressing channel and separate the first nail pressing channel from the third nail pressing channel. According to the nail pressing piece, the success rate of helium filling nail pressing operation can be effectively increased.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a nail pressing component and a battery helium filling nail pressing mechanism. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] The sealing performance of the battery casing directly determines the safety performance of the battery. How to improve the success rate of helium filling and nail pressing is a technical problem that needs to be solved urgently in battery technology. Utility Model Content

[0004] The purpose of the present application is to provide a nail pressing component and a battery helium filling nail pressing mechanism to address the above-mentioned problems, which can effectively improve the success rate of the helium filling nail pressing operation and effectively reduce the probability of helium filling failure due to mechanical matching deviation.

[0005] In a first aspect, the present application provides a nail pressing component for a battery helium-filling nail pressing mechanism, the nail pressing component comprising a first body, a second body and a third body, the first body being provided with a first nail pressing channel and a nail feeding channel; the second body being provided with a second nail pressing channel, the second nail pressing channel being connected to the first nail pressing channel and the nail feeding channel; the third body being provided with a third nail pressing channel, the third nail pressing channel being connected to the second nail pressing channel, the third body being further provided with a helium-filling channel connected to the third nail pressing channel;

[0006] Among them, the first body, the second body and the third body are connected to each other, the first pressure nail channel, the second pressure nail channel and the third pressure nail channel are connected in sequence, and the second body is configured to cooperate with the glue nail so that the glue nail blocks the second pressure nail channel and separates the first pressure nail channel and the third pressure nail channel.

[0007] In the technical solution of the embodiment of the present application, the first pressure nail channel, the second pressure nail channel and the third pressure nail channel are connected in sequence to form a pressure nail channel of the pressure nail part, which is used for the movement of the driving component. The driving component can drive the glue nail to move. The third main body is used to contact the side where the injection hole of the battery is located to form a sealed cavity connected to the injection hole, so that the outlet of the third pressure nail channel is opposite to the injection hole, and finally the glue nail can press the injection hole and seal the injection hole from the outlet of the third pressure nail channel.

[0008] The helium filling channel is connected to the third pressure nail channel, that is, the air outlet of the helium filling channel is located downstream of the outlet of the second pressure nail channel. When the plastic nail enters the second pressure nail channel through the nail feeding channel, the second body cooperates with the plastic nail, and the plastic nail blocks the second pressure nail channel, that is, the first pressure nail channel and the third pressure nail channel are separated from the second pressure nail channel. At this time, the channel between the pressure nail part and the injection hole is closed, and the injection hole cannot be connected to the outside through the first pressure nail channel, the second pressure nail channel and the third pressure nail channel, and at this time, the plastic nail and the third pressure nail channel are There is also a certain distance between them, that is, the injection hole does not contact the plastic nail, and the helium filling channel provided on the third body is connected to the third nail pressing channel, so the air outlet of the helium filling channel also has a certain distance from the plastic nail, and the air outlet of the helium filling channel is located between the second nail pressing channel and the injection hole. When helium is injected into the injection hole through the helium filling channel, the plastic nail will not hinder the passage of helium, and there is no obstacle at the injection hole, so that the filling of helium will not fail, which greatly improves the success rate and operability of the helium filling nail pressing process. At the same time, helium will not enter the first nail pressing channel and the nail feeding channel through the second nail pressing channel, thereby effectively reducing the probability of helium leakage.

[0009] It should be noted that the method of use and working principle of the pressure nail component are as follows: the driving component used to drive the movement of the plastic nail can be outside the first main body in the initial state, that is, it does not extend into the first pressure nail channel, or along the direction from the first pressure nail channel to the second pressure nail channel, the driving component extends into the first pressure nail channel but is located upstream of the outlet of the nail delivery channel, so that the driving component will not hinder the operation of the plastic nail from entering the second pressure nail channel from the nail delivery channel; the plastic nail is delivered from the nail delivery channel to the second pressure nail channel; the pressure nail component moves toward the direction close to the injection hole of the battery, so that the third main body It contacts the side of the battery's injection hole to form a sealed cavity connected to the injection hole, and the outlet of the third pressure nail channel is opposite to the injection hole, and the driving member continues to extend a certain distance to press the glue nail in the second pressure nail channel; helium is filled into the injection hole and the inside of the battery through the helium filling channel; after the helium filling is completed, the driving member continues to extend and move along the second pressure nail channel and the third pressure nail channel, driving the glue nail to be pushed out from the outlet of the third pressure nail channel and seal the injection hole, completing the sealing of the injection hole, and then helium inspection can be carried out to measure the airtightness of the battery.

[0010] In some embodiments, the third body is connected to the first body so that the second body is sandwiched between the first body and the third body.

[0011] In the technical solution of the embodiment of the present application, the third body is connected to the first body, and the second body is sandwiched between the first body and the third body, which simplifies the connection relationship. The first body, the second body and the third body form a similar stacked structure, so that the general arrangement direction of the first pressure nail channel, the second pressure nail channel and the third pressure nail channel can be consistent, which can simplify the path of the pressure nail channel to a certain extent, and facilitate the subsequent pressure nail operation.

[0012] In some embodiments, a first mounting hole for accommodating a portion of the second body is provided on the first body, and a second mounting hole for accommodating another portion of the second body is provided on the third body.

[0013] In the technical solution of the embodiment of the present application, a part of the second body is arranged in the first mounting hole of the first body, and another part of the second body is arranged in the second mounting hole of the third body, that is, the second body is embedded in the first body and the third body, and then the first body and the third body sandwich the second body, so that the second body can be stably fixed between the first body and the third body. At the same time, the second body is embedded in the first body and the third body, which can reduce the overall thickness of the nail pressing member, which is conducive to shortening the total length of the first nail pressing channel, the second nail pressing channel and the third nail pressing channel, and thus is conducive to shortening the time of the nail pressing operation.

[0014] In some embodiments, the second mounting hole includes a first hole segment and a second hole segment connected to each other, the first hole segment is in communication with the first mounting hole, and the hole diameter of the first hole segment is larger than the hole diameter of the second hole segment to form a first step surface;

[0015] The second main body includes a first main body portion and a first protrusion portion, the first protrusion portion is arranged on the outer circumferential surface of the first main body portion and protrudes from the outer circumferential surface of the first main body portion, the first protrusion portion is abutted against the first step surface, and the second pressure nail channel is arranged on the first main body portion. Along the extension direction of the second pressure nail channel, the two ends of the first main body portion extend into the first mounting hole and the second hole section respectively.

[0016] In the technical scheme of the embodiment of the present application, along the extension direction of the second pressure nail channel, the two ends of the first main body part extend into the first mounting hole and the second hole section respectively, that is, the first protrusion is located in the middle of the first main body part, and the first protrusion stops against the first step surface, and then the position of the first main body part in the second mounting hole is limited by the first step surface. At the same time, the aperture of the first mounting hole is larger than the aperture of the first pressure nail channel, and then the first mounting hole and the outlet end face of the first pressure nail channel form a second step surface, the first step surface and the second step surface jointly clamp the first main body part, and the second mounting hole is connected to the third pressure nail channel of the third main body, and then after the position of the second main body is fixed, the second pressure nail channel is connected to the third pressure nail channel.

[0017] In some embodiments, the first body and the third body are detachably connected.

[0018] In the technical solution of the embodiment of the present application, the first body and the third body are detachably connected, so that during subsequent use, if the plastic nail blocks the second pressure nail channel or the third pressure nail channel, the first body and the third body can be disassembled to facilitate manual removal of the plastic nail, and also facilitate replacement and maintenance of the first body and the third body.

[0019] It should be noted that, in some embodiments, the second body can be integrally formed with the first body, in some embodiments, the second body can also be integrally formed with the third body, and in other embodiments, the second body can also be a separate structural member, which is fixed between the first body and the third body by being embedded in the first mounting hole and the second mounting hole.

[0020] In some embodiments, the second pressure nail channel includes a first sub-hole and a second sub-hole connected to each other, the first sub-hole is connected to the first pressure nail channel, and the second sub-hole is connected to the third pressure nail channel;

[0021] Along the direction from the first pressing nail channel to the third pressing nail channel, the aperture of the first sub-hole gradually decreases.

[0022] In the technical solution of the embodiment of the present application, the second pressure nail channel includes a first sub-hole and a second sub-hole that are connected to each other, the first sub-hole is connected to the first pressure nail channel, and the second sub-hole is connected to the third pressure nail channel, that is, the first sub-hole is the entrance of the second pressure nail channel. By setting the first sub-hole to a structure in which the aperture gradually decreases along the direction of the first pressure nail channel toward the third pressure nail channel, when the glue nail is sent to the second pressure nail channel, the glue nail can cooperate with the first sub-hole more stably and smoothly. At the same time, the first sub-hole forms a guide structure, which provides a blocking position for the glue nail to block the first sub-hole, and also facilitates the subsequent delivery of the glue nail to the second sub-hole.

[0023] In some embodiments, the aperture of the second sub-hole is smaller than the aperture of the first nail pressing channel and the aperture of the nail feeding channel.

[0024] In the technical solution of the embodiment of the present application, in order to allow the glue nails to be smoothly transported in the nail delivery channel, the aperture of the nail delivery channel can be set to be slightly larger than the size of the glue nails, so that the nail delivery channel does not hinder the movement of the glue nails, and the nail delivery channel can play a certain role in limiting the position and posture of the glue nails, so that the glue nails can be more smoothly aligned with the first sub-hole when entering the first sub-hole, effectively reducing the probability of being stuck in the second pressure nail channel. By making the aperture of the second sub-hole smaller than the aperture of the first pressure nail channel and the aperture of the nail delivery channel, the success rate and stability of the glue nail blocking the second pressure nail channel can be improved.

[0025] It should be noted that the sealing of the second pressure nail channel by the glue nail can be achieved by the cooperation between the glue nail and the hole wall of the first sub-hole, or by the cooperation between the glue nail and the hole wall of the second sub-hole, or by the cooperation between the glue nail and the hole wall of the first sub-hole and the hole wall of the second hole at the same time. The present application does not make specific limitations, and it depends on the size relationship between the hole diameter of the first sub-hole, the hole diameter of the second sub-hole and the size of the glue nail, and also depends on the specific position where the glue nail is pressed down by the pressure nail operation.

[0026] In some embodiments, the third body includes a second body portion and a nozzle, the second body portion is connected to the first body, the nozzle is arranged in the second body portion and protrudes from one end of the second body portion away from the first body, the third pressure nail channel passes through the second body portion and the nozzle, and the helium filling channel is arranged in the second body portion.

[0027] In the technical solution of the embodiment of the present application, the third body is connected to the first body through the second body part, and the second mounting hole is also provided on the second body part, that is, the second body is connected and matched with the second body part, and the second body is clamped between the second body part and the first body. The nozzle is protrudingly provided at one end of the second body part away from the first body, and the nozzle is the part of the side where the third body contacts the injection hole of the battery. When the nozzle is pressed against the side of the battery, the nozzle cover is provided at the injection hole to seal the injection hole in the internal space of the pressure nail. At the same time, the third pressure nail channel runs through the second body part and the nozzle, so that the outlet of the third pressure nail channel is aligned with the injection hole, thereby improving the alignment success rate of the glue nail pressed into the injection hole and improving the success rate of the glue nail sealing the injection hole.

[0028] The size of the second body portion is larger than that of the nozzle. The helium filling channel is arranged in the second body portion, which can expand the size of the helium filling channel to a certain extent without significantly reducing the overall structural strength of the third body, thereby facilitating the molding and manufacturing of the helium filling channel, and is beneficial to improving the efficiency of helium filling and shortening the time required for helium filling.

[0029] In some embodiments, the third body further includes a sealing portion, which is sleeved on the nozzle and snap-fitted with the nozzle.

[0030] In the technical solution of the embodiment of the present application, the sealing part is used to contact the surface near the circumference of the liquid injection port of the battery and achieve a sealing effect, so that the helium ejected from the helium filling channel enters the battery from the liquid injection hole without leaking out of the battery. The sealing part and the nozzle are set as a nested and snap-fitted matching structure to achieve the effect of repeatable installation and detachability without damaging the parts, and any feasible snap-fitting matching solution in the prior art can be adopted. It should be noted that in the case of a sealing part, the nozzle does not need to be in direct contact with the battery.

[0031] In some embodiments, the nozzle includes a nozzle body and a second protrusion, the second protrusion is disposed on the outer peripheral surface of the nozzle body and protrudes from the outer peripheral surface of the nozzle body;

[0032] The sealing portion has a third mounting hole, an inner peripheral wall of the third mounting hole is provided with an annular groove, and the annular groove is snap-fitted with the second protruding portion.

[0033] In the technical solution of the embodiment of the present application, the outer circumferential surface of the nozzle body is protrudingly provided with a second protrusion, the sealing portion is provided with a third mounting hole for accommodating the nozzle, and the inner circumferential wall of the third mounting hole is provided with an annular groove. The nozzle body is placed in the third mounting hole, that is, the sealing portion is sleeved on the nozzle, and at the same time, the second protrusion is engaged with the annular groove on the inner circumferential wall of the third mounting hole, thereby connecting and fixing the nozzle and the sealing portion.

[0034] In other embodiments, an annular groove may be provided on the outer circumferential surface of the nozzle body, and a circle of protruding structures may be provided on the inner circumferential wall of the third mounting hole. The connection between the nozzle and the sealing part may also be achieved through the snap-fitting of the protruding structure and the annular groove.

[0035] In some embodiments, the nail feeding channel has a nail entry port and a nail exit port, and the nail exit port is connected to the first nail pressing channel.

[0036] In the technical solution of the embodiment of the present application, the nail outlet of the nail feeding channel is connected with the first nail pressing channel, that is, the nail feeding channel is not directly connected with the second nail pressing channel, but is indirectly connected with the second nail pressing channel through the first nail pressing channel, so that there is a certain distance between the nail outlet and the entrance of the second nail pressing channel. The part of the first nail pressing channel located behind the nail outlet can guide the glue nails to enter the second nail pressing channel, and also reduce the probability of the glue nails getting stuck in movement to a certain extent, reduce the failure rate, and improve the success rate of helium filling nails.

[0037] In some embodiments, there are multiple helium-filled channels.

[0038] In the technical solution of the embodiment of the present application, multiple helium filling channels are provided, and multiple refers to two or more. On the one hand, the efficiency of helium filling can be improved and the working hours required for the helium filling step can be shortened; on the other hand, the probability of being unable to perform the helium filling operation when the helium filling channel is blocked can be effectively reduced. If one of the helium filling channels is blocked, helium can still be continuously transported to the inside of the battery through other helium filling channels.

[0039] In the second aspect, the present application provides a battery helium charging nail pressing mechanism, including a pressure rod, a first driving member and the nail pressing member in the above embodiment, the first driving member is used to drive the pressure rod to move along the first nail pressing channel, the second nail pressing channel and the third nail pressing channel.

[0040] In the technical solution of the embodiment of the present application, the first pressure nail channel, the second pressure nail channel and the third pressure nail channel are connected in sequence to form the pressure nail channel of the pressure nail member. After the plastic nail enters the pressure nail channel, the plastic nail blocks the second pressure nail channel and the movement of the plastic nail mostly requires the pressure rod and the first driving member to implement, and when performing the helium filling operation, it is also necessary to make the plastic nail stably block the second pressure nail channel to avoid helium leakage. Therefore, the pressure rod and the first driving member can also provide the plastic nail with a stable force to press and block the second pressure nail channel, and the plastic nail will not leave the state of blocking the second pressure nail channel under the action of the helium impact.

[0041] In some embodiments, the movement of the glue nails in the nail feeding channel can be achieved by a blowing mechanism, and in other embodiments, the movement of the glue nails in the nail feeding channel can also be achieved by the cooperation of the pressure rod and the driving member. Generally, the glue nails enter the pressure nail channel from the nail feeding channel by blowing.

[0042] The usage and working principle of the helium-filled nail pressing mechanism of the battery are as follows: make the third body contact with the side where the liquid injection hole of the battery is located to form a sealed cavity connected to the liquid injection hole, and make the outlet of the third nail pressing channel opposite to the liquid injection hole. In the initial state, the pressing rod can be outside the first body, that is, not extending into the first nail pressing channel, or along the direction from the first nail pressing channel to the second nail pressing channel, the pressing rod extends into the first nail pressing channel but is located upstream of the outlet of the nail feeding channel, so that the end of the pressing rod will not hinder the operation of the plastic nail from the nail feeding channel to the second nail pressing channel. The plastic nail is sent from the nail feeding channel to the second nail pressing channel; the pressing rod continues to extend a certain distance under the drive of the first driving member, presses the plastic nail tightly in the second nail pressing channel and blocks the second nail pressing channel. Helium is filled into the liquid injection hole and the inside of the battery through the helium filling channel. After the helium filling is completed, the pressure rod continues to extend and move along the second pressure pin channel and the third pressure pin channel, driving the rubber pin to be pushed out from the outlet of the third pressure pin channel and seal the injection hole, completing the sealing of the injection hole, and then the helium test can be carried out to measure the air tightness of the battery.

[0043] In some embodiments, the battery helium charging nail pressing mechanism further includes a first clamping block and a second clamping block, the first clamping block is connected to the output end of the first driving member, and the second clamping block is connected to the first clamping block and clamps the pressing rod.

[0044] In the technical solution of the embodiment of the present application, the first clamping block and the second clamping block are connected and used to clamp the pressure rod. The first clamping block is connected to the output end of the first driving member, thereby connecting the output end of the first driving member to the pressure rod. When the output end of the first driving member moves, the pressure rod is driven to move accordingly.

[0045] In some embodiments, the battery helium charging nail pressing mechanism further includes a pressure rod guide block, which is disposed on the first main body. The pressure rod guide block has a guide hole for the pressure rod to slide through, and the guide hole is connected to the first pressure nail channel.

[0046] In the technical solution of the embodiment of the present application, the pressure rod guide block is connected to the first body and is located outside the entrance end of the first pressure nail channel. The guide hole is opposite to the first pressure nail channel, and the guide hole and the first pressure nail channel are connected. The guide hole is for the pressure rod to slide through, and the guide hole further guides and limits the pressure rod, which is conducive to improving the moving position accuracy of the pressure rod, and further helps to improve the alignment accuracy of the rubber nail and the injection hole.

[0047] In some embodiments, the battery helium filling nail pressing mechanism also includes a frame and a second driving member for driving the frame to rise and fall, and the pressing rod, the first driving member and the nail pressing member are all arranged on the frame.

[0048] In the technical solution of the embodiment of the present application, the gas in the pressure nail channel will be injected into the injection hole and the inside of the battery during the movement of the glue nail, especially when the glue nail is sent from the nail feeding channel to the pressure nail channel by the nail blowing solution, since the glue nail generally does not block the nail feeding channel when moving in the nail feeding channel, the impurity gas that blows the glue nail to move will enter the pressure nail channel and the inside of the battery. In order to reduce the entry of impurity gas and improve the reliability of the battery, the present application arranges the pressure rod, the first driving member and the pressure nail member on the frame, and arranges the frame to be driven up and down by the second driving member, so that before blowing the nail, the frame and the pressure nail member on the frame can be lifted above the battery as a whole without contacting the battery. After blowing the nails and before filling with helium, the frame and the nail pressing parts on the frame are lowered as a whole to contact with the battery through the second driving member, completing the sealing between the third body and the circumferential surface of the liquid injection hole of the battery, and constructing a closed space for helium filling. Then, the second nail pressing channel is blocked by the plastic nail through the first driving member and the pressure rod, and the helium filling operation can be carried out. After the helium filling is completed, the first driving member and the pressure rod press the plastic nail into the liquid injection hole to complete the sealing of the liquid injection hole.

[0049] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 A schematic diagram of the overall structure of the nail pressing member provided in some embodiments of the present application.

[0052] Figure 2 for Figure 1 A schematic diagram of the nail pressing member from another perspective;

[0053] Figure 3 for Figure 1 AA cross-sectional view of the pressing nail part;

[0054] Figure 4 A schematic structural diagram of a first main body of a nail pressing member provided in some embodiments of the present application;

[0055] Figure 5 for Figure 4 BB cross-sectional view of the first body in;

[0056] Figure 6 A schematic structural diagram of a second main body of a nail pressing member provided in some embodiments of the present application;

[0057] Figure 7 for Figure 6 A front view of the second body in FIG.

[0058] Figure 8 for Figure 7 A CC cross-sectional view of the second body in FIG.

[0059] Fig. 9 A schematic diagram of the structure of the third body of the nail pressing member provided in some embodiments of the present application after removing the sealing portion;

[0060] Fig.10 for Fig. 9 A front view of the third subject in FIG.

[0061] Fig.11 for Fig.10 DD sectional view of the third body in;

[0062] Fig.12 for Figure 1 A schematic diagram of the structure of the sealing part from a middle upward perspective;

[0063] Fig.13 for Fig.12 EE cross-sectional view of the sealing portion in FIG.

[0064] Fig.14 A schematic diagram of the movement path of the same plastic nail in the nail pressing member provided in some embodiments of the present application;

[0065] Fig.15 A schematic diagram of the structure of a battery helium filling and nail pressing mechanism provided in some embodiments of the present application;

[0066] Fig.16 for Fig.15 FF cross-sectional view of the battery helium charging and pressing nail mechanism.

[0067] Icon: 100-battery helium filling nail pressing mechanism; 200-rubber nail;

[0068] 10-pressing nail piece; 11-first main body; 111-first pressing nail channel; 112-nail feeding channel; 113-first mounting hole; 12-second main body; 121-second pressing nail channel; 122-first main body; 123-first protruding portion; 124-first sub-hole; 125-second sub-hole; 13-third main body; 131-third pressing nail channel; 132-helium filling channel; 133-second main body; 134-nozzle; 135-nozzle body; 136-second protruding portion; 137-sealing portion; 138-third mounting hole; 139-annular groove; 140-second mounting hole; 141-first hole section; 142-second hole section; 143-first step surface; 14-on-off valve;

[0069] 20 - pressure rod; 30 - first driving member; 40 - first clamping block; 50 - second clamping block; 60 - pressure rod guide block; 70 - frame; 80 - second driving member; 90 - sealing cover. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0071] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0072] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0073] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0075] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0076] In this application, the battery mentioned herein refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack, etc.

[0077] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0078] For battery cells, the injection hole is a structure for injecting electrolyte into the battery during the production of the battery cell. It is generally a small hole in the middle of the circular groove on the battery cover. During the production process, the electrolyte is injected through the injection hole, and the gas generated by the pre-charging, formation and other processes is discharged from the injection hole. After the secondary injection is completed, the injection hole is generally plugged with a glue nail, and a sealing sheet matching the circular groove is set on the battery cover, and the battery cover and the sealing sheet are welded to complete the sealing of the battery. Then, until the end of the battery life, the injection hole will not be opened again. Since the sealing effect of the battery injection hole directly affects the final airtightness of the battery, the airtightness of the battery needs to be tested after the injection hole is plugged with a glue nail and before the sealing sheet is welded. The final sealing sheet welding is performed after the test is qualified.

[0079] The related technology adopts the solution of helium filling and nail pressing, which is generally a solution of directly pre-delivering the rubber nail to the injection hole position, and using the gap between the rubber nail and the injection hole when the rubber nail is not pressed to fill the battery with helium. After the helium is filled, the rubber nail is used to seal the injection hole, and then the battery is tested for helium to determine whether there is helium leakage. Therefore, there is a problem in the related technology that the rubber nail completely blocks the injection hole before helium filling, that is, there is a certain failure rate of unsuccessful helium filling, and the airtightness test cannot be completed quickly and efficiently.

[0080] Based on the above considerations, in order to improve the success rate of helium-filled nail pressing, a nail pressing component is designed for a battery helium-filled nail pressing mechanism. The nail pressing component includes a first main body, a second main body and a third main body connected to each other. The first main body is provided with a first nail pressing channel and a nail feeding channel; the second main body is provided with a second nail pressing channel, and the second nail pressing channel is connected to the first nail pressing channel and the nail feeding channel; the third main body is provided with a third nail pressing channel, and the third nail pressing channel is connected to the second nail pressing channel. The third main body is also provided with a helium filling channel connected to the third nail pressing channel. Among them, the first nail pressing channel, the second nail pressing channel and the third nail pressing channel are connected in sequence, and the second main body is configured to cooperate with the glue nail so that the glue nail blocks the second nail pressing channel and separates the first nail pressing channel and the third nail pressing channel. The helium filling channel is connected to the third pressure nail channel, that is, the air outlet of the helium filling channel is located downstream of the outlet of the second pressure nail channel. When the glue nail enters the second pressure nail channel through the nail feeding channel, the second body cooperates with the glue nail, and the glue nail blocks the second pressure nail channel, that is, the first pressure nail channel and the third pressure nail channel are separated from the second pressure nail channel. At this time, the channel between the pressure nail member and the injection hole is closed, and the injection hole cannot be connected to the outside through the first pressure nail channel, the second pressure nail channel and the third pressure nail channel, and at this time, there is still a certain distance between the glue nail and the third pressure nail channel, that is, the injection hole is not in contact with the glue nail, and the helium filling channel provided on the third body is connected to the third pressure nail channel, so the air outlet of the helium filling channel also has a certain distance from the glue nail, and the air outlet of the helium filling channel is located between the second pressure nail channel and the injection hole. When helium is injected into the injection hole through the helium filling channel, the glue nail will not hinder the passage of helium, and there is no obstacle at the injection hole, so that the filling of helium will not fail. After the helium is injected, the rubber nail is pressed to the injection hole to seal the injection hole, which greatly improves the success rate and operability of the helium filling nail pressing process.

[0081] Compared with the related art, the nail pressing part of the present application integrates a nail feeding channel, a first nail pressing channel, a second nail pressing channel, a third nail pressing channel and a helium filling channel. Through reasonable design, before helium filling, the glue nail can be stably located upstream of the outlet of the helium filling channel, and the glue nail cooperates with the second nail pressing channel and blocks the second nail pressing channel. The glue nail and the liquid injection hole do not contact or interfere with each other, and the liquid injection hole can maintain communication with the helium filling channel, thereby effectively improving the success rate of helium filling nail pressing and reducing the failure rate of helium filling failure.

[0082] Please refer to Figure 1 , Figure 1 The present invention is a schematic diagram of the structure of a nail pressing member 10 provided in some embodiments of the present application. The nail pressing member 10 is used for a battery helium filling nail pressing mechanism 100, which is used to inject helium into the battery through the injection hole of the battery, and the injection hole is sealed by a glue nail 200 after the helium injection is completed. The battery can not only be used as the operating power supply of the vehicle, but also as the driving power supply of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle. A battery is provided inside the vehicle, and the battery can be arranged at the bottom, head or tail of the vehicle. The battery can be used to power the vehicle, for example, the battery can be used as the operating power supply of the vehicle. The vehicle may also include a controller and a motor, and the controller is used to control the battery to power the motor, for example, for the starting, navigation and driving power requirements of the vehicle.

[0083] The battery includes a case and a battery cell, and the battery cell is contained in the case. The case is used to provide a storage space for the battery cell, and the case can adopt a variety of structures. In some embodiments, the case may include a first part and a second part, the first part and the second part cover each other, and the first part and the second part jointly define a storage space for accommodating the battery cell. The second part can be a hollow structure with one end open, and the first part can be a plate-like structure, and the first part covers the open side of the second part, so that the first part and the second part jointly define a storage space; the first part and the second part can also be hollow structures with one side open, and the open side of the first part covers the open side of the second part. Of course, the case formed by the first part and the second part can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0084] In a battery, there can be multiple battery cells, which can be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by multiple battery cells is accommodated in a box; of course, the battery can also be a battery module formed by connecting multiple battery cells in series, in parallel, or in a mixed connection, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in a box. The battery can also include other structures. For example, the battery can also include a busbar component for realizing electrical connection between multiple battery cells.

[0085] Each battery cell may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell may be cylindrical, flat, rectangular, or in other shapes.

[0086] The battery cell may include an outer shell, an electrode assembly and an electrode terminal. The outer shell includes a shell and an end cap, the shell has an opening, and the end cap closes the opening to isolate the internal environment of the battery cell from the external environment.

[0087] The shell is a component used to cooperate with the end cap to form the internal environment of the battery cell, wherein the formed internal environment can be used to accommodate the electrode assembly, electrolyte and other components. The shell and the end cap can be independent components. The shell can be of various shapes and sizes. Specifically, the shape of the shell can be determined according to the specific shape and size of the electrode assembly. The shell can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0088] The end cap refers to a component that covers the opening of the shell to isolate the internal environment of the battery cell from the external environment. Without limitation, the shape of the end cap can be adapted to the shape of the shell to match the shell. Optionally, the end cap can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap is not easily deformed when squeezed and collided, so that the battery cell can have a higher structural strength and reliability can also be improved. Functional components such as electrode terminals can be provided on the end cap. The electrode terminal can be used to electrically connect to the electrode assembly for output or input of electrical energy of the battery cell. The material of the end cap can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose special restrictions on this. In some embodiments, an insulating structure can also be provided on the inner side of the end cap, and the insulating structure can be used to isolate the electrical connection components in the shell from the end cap to reduce the risk of short circuit. Exemplarily, the insulating structure can be plastic, rubber, etc.

[0089] The electrode assembly is the part where the electrochemical reaction occurs in the battery cell. One or more electrode assemblies may be contained in the housing. The electrode assembly is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet, which is used to separate the positive electrode sheet and the negative electrode sheet to avoid internal short circuit of the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute the pole ear. The positive pole ear and the negative pole ear may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the pole ears connect the electrode terminals to form a current loop.

[0090] In some embodiments, the battery cell may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold value.

[0091] In some embodiments, the battery cell may also be provided with a liquid injection hole for injecting electrolyte into the battery.

[0092] According to some embodiments of the present application, Figure 1 to Figure 14 As shown, the present application provides a nail pressing component 10 for a battery helium charging nail pressing mechanism 100 , wherein the nail pressing component 10 includes a first main body 11 , and the first main body 11 is provided with a first nail pressing channel 111 and a nail feeding channel 112 .

[0093] The first body 11 is a part of the nail pressing component 10 . The first nail pressing channel 111 provided on the first body 11 is used for a driving member for driving the plastic nail 200 to move and pass through. The nail delivery channel 112 is used for delivering the plastic nail 200 to be used into the nail pressing component 10 .

[0094] The nail pressing member 10 further includes a second body 12 , and the second body 12 is provided with a second nail pressing channel 121 , and the second nail pressing channel 121 is communicated with the first nail pressing channel 111 and the nail feeding channel 112 .

[0095] The second body 12 is a part of the nail pressing part 10. The second nail pressing channel 121 provided on the second body 12 is also used for the movement of the driving member. The driving member is used to drive the glue nail 200 to move in the nail pressing channel. The second nail pressing channel 121 is connected to the first nail pressing channel 111. The driving member that drives the glue nail 200 to move can reciprocate between the first nail pressing channel 111 and the second nail pressing channel 121. The second nail pressing channel 121 is connected to the nail delivery channel 112. The nail delivery channel 112 delivers the glue nail 200 to be used to the second nail pressing channel 121.

[0096] The nail pressing member 10 further includes a third body 13, the third body 13 is provided with a third nail pressing channel 131, the third nail pressing channel 131 is communicated with the second nail pressing channel 121, and the third body 13 is further provided with a helium filling channel 132 communicated with the third nail pressing channel 131;

[0097] The third main body 13 is a part of the pressure nail component 10. The third main body 13 is used to contact the side of the battery's injection hole to form a sealed cavity connected to the injection hole, so that the outlet of the third pressure nail channel 131 is opposite to the injection hole, and finally the glue nail 200 can press the injection hole and seal the injection hole through the outlet of the third pressure nail channel 131.

[0098] The third pressure nail channel 131 provided on the third body 13 is also used for the driving member to move through, and the driving member can drive the plastic nail 200 to move. The third pressure nail channel 131 is connected to the second pressure nail channel 121, and the driving member that drives the plastic nail 200 to move can reciprocate between the second pressure nail channel 121 and the third pressure nail channel 131. The outlet of the third pressure nail channel 131 is used to be opposite to the injection hole, and the helium filling channel 132 provided on the third body 13 is used to fill helium into the third pressure nail channel 131, and then fill the helium into the battery through the injection hole.

[0099] Among them, Figure 1-Figure 2 As shown, the first body 11, the second body 12 and the third body 13 are connected to each other, the first pressure nail channel 111, the second pressure nail channel 121 and the third pressure nail channel 131 are connected in sequence, and the second body 12 is configured to cooperate with the glue nail 200 so that the glue nail 200 blocks the second pressure nail channel 121 and separates the first pressure nail channel 111 and the third pressure nail channel 131.

[0100] The first pressing nail channel 111 , the second pressing nail channel 121 and the third pressing nail channel 131 are connected in sequence to form a pressing nail channel of the pressing nail component 10 , which is used for the driving member that drives the rubber nail 200 to move back and forth.

[0101] The helium filling channel 132 is connected to the third pressure nail channel 131, that is, the air outlet of the helium filling channel 132 is located downstream of the outlet of the second pressure nail channel 121. When the plastic nail 200 enters the second pressure nail channel 121 through the nail feeding channel 112, the second body 12 cooperates with the plastic nail 200, and the plastic nail 200 blocks the second pressure nail channel 121, that is, the first pressure nail channel 111 and the third pressure nail channel 131 are separated from the second pressure nail channel 121. At this time, the channel between the pressure nail member 10 and the injection hole is closed, and the injection hole cannot be connected to the outside through the first pressure nail channel 111, the second pressure nail channel 121 and the third pressure nail channel 131, and at this time There is a certain distance between the glue nail 200 and the third pressure nail channel 131, that is, the injection hole does not contact the glue nail 200, and the helium filling channel 132 provided on the third body 13 is connected to the third pressure nail channel 131, so the air outlet of the helium filling channel 132 is also at a certain distance from the glue nail 200, and the air outlet of the helium filling channel 132 is located between the second pressure nail channel 121 and the injection hole. When helium is injected into the injection hole through the helium filling channel 132, the glue nail 200 will not hinder the passage of helium, and there is no obstacle at the injection hole, so that the filling of helium will not fail, which greatly improves the success rate and operability of the helium filling pressure nail process. At the same time, helium will not enter the first pressure nail channel 111 and the nail delivery channel 112 through the second pressure nail channel 121, thereby effectively reducing the probability of helium leakage.

[0102] It should be noted that if Fig.15As shown, the use method and working principle of the nail pressing member 10 are as follows: the driving member used to drive the glue nail 200 to move can be outside the first main body 11 in the initial state, that is, it does not extend into the first nail pressing channel 111, or along the direction from the first nail pressing channel 111 to the second nail pressing channel 121, the driving member extends into the first nail pressing channel 111 but is located upstream of the outlet of the nail feeding channel 112, so that the driving member will not hinder the operation of the glue nail 200 entering the second nail pressing channel 121 from the nail feeding channel 112; the glue nail 200 is fed into the second nail pressing channel 121 from the nail feeding channel 112; the nail pressing member 10 moves in the direction close to the injection hole of the battery. , so that the third body 13 is in contact with the side of the liquid injection hole of the battery, forming a sealed cavity connected to the liquid injection hole, and the outlet of the third pressure nail channel 131 is opposite to the liquid injection hole, and the driving member continues to extend a certain distance to press the glue nail 200 into the second pressure nail channel 121; helium is filled into the liquid injection hole and the inside of the battery through the helium filling channel 132; after the helium filling is completed, the driving member continues to extend and move along the second pressure nail channel 121 and the third pressure nail channel 131, driving the glue nail 200 to be pushed out from the outlet of the third pressure nail channel 131 and block the liquid injection hole, completing the sealing of the liquid injection hole, and then the helium test can be carried out to measure the airtightness of the battery.

[0103] The upstream in "the driving member is located upstream of the outlet of the nail feeding channel 112" mentioned here refers to the part located in front of the outlet of the nail feeding channel 112 in the moving direction of the driving member that drives the glue nail 200 to move along the first pressure nail channel 111 to the second pressure nail channel 121 to the third pressure nail channel 131, that is, the driving member has not yet reached or passed through the outlet of the nail feeding channel 112. In other words, along the Z direction in the figure, the driving member is located upstream of the outlet of the nail feeding channel 112, and the driving member is located above the outlet of the nail feeding channel 112. Correspondingly, the downstream refers to the part located behind a certain position in the moving direction of the driving member that drives the glue nail 200 to move along the first pressure nail channel 111 to the second pressure nail channel 121 to the third pressure nail channel 131.

[0104] In addition, after the first body 11, the second body 12 and the third body 13 are connected, the relative positions of the first pressure nail channel 111, the second pressure nail channel 121 and the third pressure nail channel 131 are fixed. During the process of filling the pressure nail with helium, the relative positions of the first pressure nail channel 111, the second pressure nail channel 121 and the third pressure nail channel 131 will not change, so the helium filling operation and the pressure nail operation can be performed stably to a certain extent.

[0105] It should be noted that, in some embodiments, the second body 12 can be integrally formed with the first body 11. In some embodiments, the second body 12 can also be integrally formed with the third body 13. In other embodiments, the second body 12 can also be a separate structural member, which is fixed between the first body 11 and the third body 13 by being embedded in the first mounting hole 113 and the second mounting hole 140.

[0106] According to some embodiments of the present application, the third body 13 is connected to the first body 11 , so that the second body 12 is sandwiched between the first body 11 and the third body 13 .

[0107] In the technical solution of the embodiment of the present application, Figure 2 and Figure 3 As shown, the third body 13 is connected to the first body 11, and the second body 12 is sandwiched between the first body 11 and the third body 13, which simplifies the connection relationship. The first body 11, the second body 12 and the third body 13 form a similar stacked structure, so that the general arrangement direction of the first pressure nail channel 111, the second pressure nail channel 121 and the third pressure nail channel 131 can be kept consistent, which can simplify the path of the pressure nail channel to a certain extent, and facilitate the subsequent pressure nail operation.

[0108] According to some embodiments of the present application, the first body 11 is provided with a first mounting hole 113 for accommodating a portion of the second body 12 , and the third body 13 is provided with a second mounting hole 140 for accommodating another portion of the second body 12 .

[0109] The second body 12 is a separate component and can be separated from the first body 11 and the third body 13 .

[0110] like Figure 5 As shown, the first mounting hole 113 is disposed on an end surface of the first body 11 close to the third body 13 , and the first mounting hole 113 is communicated with an outlet end of the first pressing nail channel 111 .

[0111] like Fig.11 As shown, the second mounting hole 140 is disposed on an end surface of the third body 13 close to the first body 11 , and the second mounting hole 140 is communicated with an inlet end of the third pressing nail channel 131 .

[0112] In the technical solution of the embodiment of the present application, a part of the second body 12 is arranged in the first mounting hole 113 of the first body 11, and another part of the second body 12 is arranged in the second mounting hole 140 of the third body 13, that is, the second body 12 is embedded in the first body 11 and the third body 13, and then the first body 11 and the third body 13 sandwich the second body 12, so that the second body 12 can be stably fixed between the first body 11 and the third body 13. At the same time, the second body 12 is embedded in the first body 11 and the third body 13, which can reduce the overall thickness of the nail pressing member 10, which is conducive to shortening the total length of the first nail pressing channel 111, the second nail pressing channel 121 and the third nail pressing channel 131, and thus is conducive to shortening the time of the nail pressing operation.

[0113] According to some embodiments of the present application, the second mounting hole 140 includes a first hole segment 141 and a second hole segment 142 connected to each other, the first hole segment 141 is connected to the first mounting hole 113, and the hole diameter of the first hole segment 141 is larger than the hole diameter of the second hole segment 142 to form a first step surface 143;

[0114] The second main body 12 includes a first main body portion 122 and a first protruding portion 123. The first protruding portion 123 is arranged on the outer circumferential surface of the first main body portion 122 and protrudes from the outer circumferential surface of the first main body portion 122. The first protruding portion 123 abuts against the first step surface 143. The second pressure nail channel 121 is arranged on the first main body portion 122. Along the extension direction of the second pressure nail channel 121, the two ends of the first main body portion 122 extend into the first mounting hole 113 and the second hole section 142 respectively.

[0115] like Figure 3 and Figure 8 As shown, the second mounting hole 140 is a stepped hole, the first hole section 141 is closer to the first body 11 than the second hole section 142 , the first hole section 141 is connected to the first mounting hole 113 , and the second body 12 is completely covered between the first body 11 and the third body 13 .

[0116] like Figure 3 and Figure 6 As shown, the second pressing nail channel 121 is provided on the first body portion 122 of the second body 12, and the two ends of the first body portion 122 extend into the first mounting hole 113 and the second hole section 142 respectively. The end surface of one end of the first body portion 122 extending into the first mounting hole 113 abuts against the bottom wall of the first mounting hole 113, and the other end of the first body portion 122 extending into the second mounting hole 140 is located in the second hole section 142. Along the extension direction of the second pressing nail channel 121, the first protrusion 123 is provided in the middle of the first body portion 122, and the first protrusion 123 abuts against the first step surface 143, thereby determining the setting position of the second body 12.

[0117] In the technical scheme of the embodiment of the present application, along the extension direction of the second pressure nail channel 121, the two ends of the first main body part 122 extend into the first mounting hole 113 and the second hole section 142 respectively, that is, the first protrusion 123 is located in the middle of the first main body part 122, and the first protrusion 123 stops against the first step surface 143, and then the position of the first main body part 122 in the second mounting hole 140 is limited by the first step surface 143. At the same time, the aperture of the first mounting hole 113 is larger than the aperture of the first pressure nail channel 111, and then the first mounting hole 113 and the outlet end face of the first pressure nail channel 111 form a second step surface, the first step surface 143 and the second step surface jointly clamp the first main body part 122, and the second mounting hole 140 is connected with the third pressure nail channel 131 of the third main body 13, and then after the position of the second main body 12 is fixed, the second pressure nail channel 121 is connected with the third pressure nail channel 131.

[0118] According to some embodiments of the present application, the first body 11 and the third body 13 are detachably connected.

[0119] In the technical solution of the embodiment of the present application, the first body 11 and the third body 13 are detachably connected, so that during subsequent use, if the glue nail 200 blocks the second pressure nail channel 121 or the third pressure nail channel 131, the first body 11 and the third body 13 can be disassembled to facilitate manual removal of the glue nail 200, and also to facilitate replacement and maintenance of the first body 11 and the third body 13.

[0120] According to some embodiments of the present application, the second pressure nail channel 121 includes a first sub-hole 124 and a second sub-hole 125 that are connected to each other, the first sub-hole 124 is connected to the first pressure nail channel 111, and the second sub-hole 125 is connected to the third pressure nail channel 131; along the direction from the first pressure nail channel 111 to the third pressure nail channel 131, the aperture of the first sub-hole 124 gradually decreases.

[0121] like Figure 7 and Figure 8 As shown, one end of the first sub-hole 124 connected to the first pressure nail channel 111 is the entrance of the second pressure nail channel 121 , and one end of the second sub-hole 125 connected to the third pressure nail channel 131 is the exit of the second pressure nail channel 121 .

[0122] By setting the first sub-hole 124 to a structure in which the aperture gradually decreases along the direction from the first pressure nail channel 111 to the third pressure nail channel 131, the glue nail 200 can cooperate with the first sub-hole 124 more stably and smoothly when the glue nail 200 is sent to the second pressure nail channel 121. At the same time, the first sub-hole 124 forms a guiding structure, which provides a blocking position for the glue nail 200 to block the first sub-hole 124, and also facilitates the subsequent sending of the glue nail 200 to the second sub-hole 125.

[0123] According to some embodiments of the present application, the aperture of the second sub-hole 125 is smaller than the aperture of the first nail pressing channel 111 and the aperture of the nail feeding channel 112 .

[0124] The second sub-hole 125 needs to cooperate with the glue nail 200 to provide the glue nail 200 with resistance in the opposite direction of the sliding direction of the glue nail 200, so that the glue nail 200 cannot move freely in the second sub-hole 125 by its own gravity, and effectively reduce the probability of the glue nail 200 escaping from the blocked second pressure nail channel 121, entering the third pressure nail channel 131, or even moving to the position of the injection hole, so that the injection hole and the helium filling channel 132 are always connected when helium filling is needed.

[0125] In the technical solution of the embodiment of the present application, in order to allow the glue nail 200 to be smoothly transported in the nail feeding channel 112, the aperture of the nail feeding channel 112 can be set to be slightly larger than the size of the glue nail 200, so that the nail feeding channel 112 does not hinder the movement of the glue nail 200, and the nail feeding channel 112 can play a certain role in limiting the position and posture of the glue nail 200, so that the glue nail 200 can be more smoothly aligned with the first sub-hole 124 when entering the first sub-hole 124, and the probability of being stuck in the second pressure nail channel 121 is effectively reduced. By making the aperture of the second sub-hole 125 smaller than the aperture of the first pressure nail channel 111 and the aperture of the nail feeding channel 112, the success rate and stability of the glue nail 200 blocking the second pressure nail channel 121 can be improved.

[0126] It should be noted that the glue nail 200 blocks the second pressure nail channel 121, which can be achieved by the glue nail 200 cooperating with the hole wall of the first sub-hole 124, or by the glue nail 200 cooperating with the hole wall of the second sub-hole 125, or by the glue nail 200 cooperating with the hole wall of the first sub-hole 124 and the hole wall of the second hole at the same time. This application does not make specific limitations, and it depends on the size relationship between the hole diameter of the first sub-hole 124, the hole diameter of the second sub-hole 125 and the size of the glue nail 200, and also depends on the specific position where the glue nail 200 is pressed down by the pressure nail operation.

[0127] According to some embodiments of the present application, the third body 13 includes a second body portion 133 and a nozzle 134, the second body portion 133 is connected to the first body 11, the nozzle 134 is arranged on the second body portion 133 and protrudes from one end of the second body portion 133 away from the first body 11, the third pressure nail channel 131 passes through the second body portion 133 and the nozzle 134, and the helium filling channel 132 is arranged on the second body portion 133.

[0128] like Fig. 9 and Fig.11As shown, the second main body 133 is the main structural part of the third main body 13, and the third pressure nail channel 131 passes through the second main body 133 and the nozzle 134 in sequence. The nozzle 134 needs to match the position of the injection hole, so that the outlet of the third pressure nail channel 131 is opposite to the injection hole.

[0129] In the technical solution of the embodiment of the present application, the third body 13 is connected to the first body 11 through the second body part 133, and the second mounting hole 140 is also provided on the second body part 133, that is, the second body 12 is connected and matched with the second body part 133, and the second body 12 is sandwiched between the second body part 133 and the first body 11. The nozzle 134 is protrudingly provided at one end of the second body part 133 away from the first body 11. The nozzle 134 is the part of the third body 13 that contacts the side where the injection hole of the battery is located. When the nozzle 134 is pressed against the side of the battery, the nozzle 134 covers the injection hole, and the injection hole is closed in the internal space of the pressure nail member 10. At the same time, the third pressure nail channel 131 passes through the second body part 133 and the nozzle 134, so that the outlet of the third pressure nail channel 131 is aligned with the injection hole, thereby improving the alignment success rate of the glue nail 200 pressed into the injection hole and improving the success rate of the glue nail 200 sealing the injection hole.

[0130] like Figure 9-10 As shown, the size of the second body portion 133 is larger than that of the nozzle 134. The helium filling channel 132 is arranged in the second body portion 133, which can expand the size of the helium filling channel 132 to a certain extent without significantly reducing the overall structural strength of the third body 13, facilitates the molding and manufacturing of the helium filling channel 132, and is beneficial to improving the efficiency of helium filling and shortening the time required for helium filling.

[0131] According to some embodiments of the present application, the third body 13 further includes a sealing portion 137 , which is sleeved on the nozzle 134 and snap-fitted with the nozzle 134 .

[0132] like Figure 12-13 As shown, the sealing portion 137 is a component used to contact the surface near the circumference of the battery's injection port and achieve a sealing effect, which can allow the helium gas ejected from the helium filling channel 132 to enter the battery through the injection hole without leaking out of the battery.

[0133] The sealing portion 137 and the nozzle 134 are arranged to be nested and snap-fitted to achieve the effect of repeated installation and removal without damaging the parts, and any feasible snap-fitting scheme in the prior art can be adopted. It should be noted that in the case of the sealing portion 137, the nozzle 134 may not be in direct contact with the battery.

[0134] According to some embodiments of the present application, the nozzle 134 includes a nozzle body 135 and a second protrusion 136, the second protrusion 136 is arranged on the outer peripheral surface of the nozzle body 135 and protrudes from the outer peripheral surface of the nozzle body 135; the sealing portion 137 has a third mounting hole 138, and the inner peripheral wall of the third mounting hole 138 is provided with an annular groove 139, and the annular groove 139 is snap-fitted with the second protrusion 136.

[0135] like Fig.13 As shown, in the technical solution of the embodiment of the present application, the outer circumferential surface of the nozzle body 135 is protrudingly provided with a second protrusion 136, the sealing portion 137 is provided with a third mounting hole 138 for accommodating the nozzle 134, and the inner circumferential wall of the mounting hole is provided with an annular groove 139. The nozzle body 135 is placed in the third mounting hole 138, that is, the sealing portion 137 is sleeved on the nozzle 134, and the second protrusion 136 is engaged with the annular groove 139 on the inner circumferential wall of the third mounting hole 138, thereby connecting and fixing the nozzle 134 and the sealing portion 137.

[0136] In other embodiments, an annular groove 139 may be provided on the outer circumferential surface of the nozzle body 135, and a circle of protruding structures may be provided on the inner circumferential wall of the third mounting hole 138. Similarly, the connection between the nozzle 134 and the sealing portion 137 may be achieved through the snap-fitting cooperation between the protruding structure and the annular groove 139.

[0137] According to some embodiments of the present application, the nail feeding channel 112 has a nail entry port and a nail exit port, and the nail exit port is connected to the first nail pressing channel 111 .

[0138] like Figure 3 and Figure 5 As shown, the nail outlet of the nail feeding channel 112 is connected to the first nail pressing channel 111 , that is, the nail feeding channel 112 is not directly connected to the second nail pressing channel 121 , but is indirectly connected to the second nail pressing channel 121 through the first nail pressing channel 111 .

[0139] There is a certain distance between the nail outlet and the entrance of the second nail pressure channel 121. The part of the first nail pressure channel 111 located behind the nail outlet can guide the glue nail 200 to enter the second nail pressure channel 121, and also reduce the probability of the glue nail 200 being stuck in movement to a certain extent, reduce the failure rate, and improve the success rate of helium-filled nails.

[0140] According to some embodiments of the present application, there are multiple helium filling channels 132 .

[0141] like Fig.11 As shown, a plurality of helium filling channels 132 are provided, and a plurality refers to two or more than two.

[0142] On the one hand, the efficiency of helium filling can be improved and the working hours required for the helium filling step can be shortened; on the other hand, the probability of being unable to perform the helium filling operation when the helium filling channel 132 is blocked can be effectively reduced. If one of the helium filling channels 132 is blocked, helium can still be continuously transported to the inside of the battery through other helium filling channels 132.

[0143] According to some embodiments of the present application, in order to facilitate the movement of the driving component and drive the glue nail 200 to move along the pressure nail channel, the first pressure nail channel 111, the second pressure nail channel 121 and the third pressure nail channel 131 are all straight sections and are perpendicular to the crimping surface of the third main body 13 for crimping the side wall where the injection hole is located.

[0144] According to some embodiments of the present application, the present application also provides a battery helium charging nail pressing mechanism 100, including a pressure rod 20, a first driving member 30 and the nail pressing member 10 in the above embodiment, the first driving member 30 is used to drive the pressure rod 20 to move along the first nail pressing channel 111, the second nail pressing channel 121 and the third nail pressing channel 131.

[0145] The first driving member 30 here is the driving component mentioned above for driving the rubber nail 200 to move.

[0146] like Figure 15-16 As shown, in the technical solution of the embodiment of the present application, the first pressure nail channel 111, the second pressure nail channel 121 and the third pressure nail channel 131 are connected in sequence to form the pressure nail channel of the pressure nail member 10. After the plastic nail 200 enters the pressure nail channel, the plastic nail 200 blocks the second pressure nail channel 121 and the movement of the plastic nail 200 mostly requires the pressure rod 20 and the first driving member 30 to implement, and when performing the helium filling operation, it is also necessary to make the plastic nail 200 stably block the second pressure nail channel 121 to avoid helium leakage. Therefore, the pressure rod 20 and the first driving member 30 can also provide the plastic nail 200 with a stable force to press and block the second pressure nail channel 121, and the plastic nail 200 will not be out of the state of blocking the second pressure nail channel 121 under the action of the helium impact.

[0147] In some embodiments, the movement of the glue nail 200 in the nail feeding channel 112 can be achieved by a blowing mechanism, and in other embodiments, the movement of the glue nail 200 in the nail feeding channel 112 can also be achieved by the cooperation of the pressure rod 20 and the driving member. Generally, the glue nail 200 enters the nail pressing channel from the nail feeding channel 112 by blowing.

[0148] The use method and working principle of the helium-filled nail pressing mechanism are as follows: the third body 13 is brought into contact with the side of the liquid injection hole of the battery to form a sealed cavity connected to the liquid injection hole, and the outlet of the third nail pressing channel 131 is opposite to the liquid injection hole. In the initial state, the pressing rod 20 can be outside the first body 11, that is, not extending into the first nail pressing channel 111, or along the direction from the first nail pressing channel 111 to the second nail pressing channel 121, the pressing rod 20 extends into the first nail pressing channel 111 but is located upstream of the outlet of the nail feeding channel 112, so that the end of the pressing rod 20 will not hinder the operation of the glue nail 200 entering the second nail pressing channel 121 from the nail feeding channel 112. The glue nail 200 is fed into the second nail pressing channel 121 by the nail feeding channel 112; the pressing rod 20 continues to extend a certain distance under the drive of the first driving member 30, pressing the glue nail 200 tightly in the second nail pressing channel 121 and blocking the second nail pressing channel 121. Helium is filled into the liquid injection hole and the inside of the battery through the helium filling channel 132. After the helium filling is completed, the pressure rod 20 continues to extend and move along the second pressure nail channel 121 and the third pressure nail channel 131, driving the glue nail 200 to be pushed out from the outlet of the third pressure nail channel 131 and seal the injection hole, completing the sealing of the injection hole, and then the helium test can be carried out to measure the air tightness of the battery.

[0149] According to some embodiments of the present application, in order to facilitate the control of the start and stop of helium filling and ensure the sealing performance, such as Fig.15 As shown, the nail pressing member 10 further includes an on-off valve 14 connected to the inlet of the helium filling channel 132 , and the number of the on-off valve 14 is the same as the number of the helium filling channel 132 .

[0150] According to some embodiments of the present application, the battery helium charging nail pressing mechanism 100 also includes a first clamping block 40 and a second clamping block 50, the first clamping block 40 is connected to the output end of the first driving member 30, and the second clamping block 50 is connected to the first clamping block 40 and clamps the pressure rod 20.

[0151] like Figure 15-16 As shown, in the technical solution of the embodiment of the present application, the first clamping block 40 and the second clamping block 50 are connected and used to clamp the pressure rod 20. The first clamping block 40 is connected to the output end of the first driving member 30, and then the output end of the first driving member 30 is connected to the pressure rod 20. When the output end of the first driving member 30 moves, it drives the pressure rod 20 to move accordingly.

[0152] According to some embodiments of the present application, the battery helium charging nail pressing mechanism 100 also includes a pressure rod guide block 60, which is disposed on the first main body 11, and the pressure rod guide block 60 has a guide hole for the pressure rod 20 to slide through, and the guide hole is connected to the first nail pressing channel 111.

[0153] like Figure 15-16As shown, in the technical solution of the embodiment of the present application, the pressure rod guide block 60 is connected to the first body 11 and is located outside the entrance end of the first pressure nail channel 111. The guide hole is opposite to the first pressure nail channel 111, and the guide hole is connected to the first pressure nail channel 111. The guide hole is for the pressure rod 20 to slide through, and the guide hole is further guided and limited for the pressure rod 20, which is conducive to improving the moving position accuracy of the pressure rod 20, and further conducive to improving the alignment accuracy of the glue nail 200 and the injection hole.

[0154] According to some embodiments of the present application, the battery helium filling nail pressing mechanism 100 also includes a frame 70 and a second driving member 80 that drives the frame 70 to rise and fall, and the pressure rod 20, the first driving member 30 and the nail pressing member 10 are all arranged on the frame 70.

[0155] like Figure 15-16 As shown, in the technical solution of the embodiment of the present application, the gas in the pressure nail channel will be injected into the injection hole and the inside of the battery during the movement of the glue nail 200, especially when the glue nail 200 is sent from the nail feeding channel 112 to the pressure nail channel by the nail blowing solution, because the glue nail 200 generally does not block the nail feeding channel 112 when moving in the nail feeding channel 112, the impurity gas that blows the glue nail 200 will enter the pressure nail channel and the inside of the battery. In order to reduce the entry of impurity gas and improve the reliability of the battery, the present application arranges the pressure rod 20, the first driving member 30 and the pressure nail member 10 on the frame 70, and arranges the frame 70 to be driven up and down by the second driving member 80, so that before blowing the nail, the frame 70 and the pressure nail member 10 on the frame 70 can be lifted above the battery as a whole without contacting the battery. After blowing the nails and before filling with helium, the frame 70 and the nail pressing member 10 on the frame 70 are lowered as a whole to contact the battery through the second driving member 80, completing the sealing between the third body 13 and the circumferential surface of the liquid injection hole of the battery, and constructing a closed space for helium filling. Then, the first driving member 30 and the pressure rod 20 are used to make the glue nail 200 block the second nail pressing channel 121, and the helium filling operation can be carried out. After the helium filling is completed, the first driving member 30 and the pressure rod 20 press the glue nail 200 into the liquid injection hole to complete the sealing of the liquid injection hole.

[0156] Preferably, the first drive member 30 and the second drive member 80 both adopt electronic control mechanisms, such as electric cylinders, linear actuators, servo mechanisms, etc., and multiple points can be set and the positions can be adjusted according to actual needs. Accurate positioning facilitates more precise control of each stroke of the first drive member 30 and the second drive member 80.

[0157] According to some embodiments of the present application, the battery helium filling nail pressing mechanism 100 further includes a sealing cover 90, such as Figure 15-16As shown, the sealing cover 90 is connected to the sealing portion 137 and the cover is arranged on the sealing portion 137. The end surface of the sealing cover 90 and the end surface of the sealing portion 137 are both used to press the side wall where the liquid injection hole of the battery is located, so as to increase the contact area between the battery helium filling nail pressing mechanism 100 and the battery side wall, so as to reduce the damage to the battery side wall caused by concentrated force.

[0158] According to some embodiments of the present application, the battery helium filling nail pressing mechanism 100 further includes an air supply component, which is connected to the air inlet end of the helium filling channel 132.

[0159] According to some embodiments of the present application, the battery helium filling nail pressing mechanism 100 also includes a positioning mechanism for clamping and fixing the battery.

[0160] According to the embodiments of the present application, Figure 15-16 As shown, the present application provides a battery helium charging nail pressing mechanism 100, including a frame 70 and a nail pressing member 10, a pressure rod 20, a first driving member 30 for driving the pressure rod 20 to move, and a second driving member 80 for driving the frame 70 to move.

[0161] like Figure 1 and Figure 3 As shown, the nail pressing member 10 includes three independent parts, namely a first body 11, a second body 12 and a third body 13. The first body 11 is provided with a first nail pressing channel 111 and a nail feeding channel 112; the second body 12 is provided with a second nail pressing channel 121, and the third body 13 is provided with a third nail pressing channel 131 and a helium filling channel 132 connected to the third nail pressing channel 131. Figure 5 and Fig.11As shown, the first body 11 and the third body 13 are detachably connected, a first mounting hole 113 is provided on the first body 11, and a second mounting hole 140 is provided on the third body 13, the first mounting hole 113 is connected to the second mounting hole 140, and two ends of the second body 12 are respectively located in the first mounting hole 113 and the second mounting hole 140, so that the second body 12 is sandwiched and embedded between the first body 11 and the third body 13. The first pressure nail channel 111, the second pressure nail channel 121 and the third pressure nail channel 131 are connected in sequence and are all straight sections, and the nail outlet of the nail feeding channel 112 is connected to the first pressure nail channel 111. The third body 13 includes a second body portion 133, a nozzle 134 and a sealing portion 137. The second body portion 133 is connected to the first body 11. The nozzle 134 is arranged on the second body portion 133 and protrudes from one end of the second body portion 133 away from the first body 11. The third pressing nail channel 131 passes through the second body portion 133 and the nozzle 134. The helium filling channel 132 is arranged on the second body portion 133. The sealing portion 137 is sleeved on the nozzle 134 and is engaged with the nozzle 134. The sealing portion 137 is used to contact the surface near the circumference of the liquid injection port of the battery and achieve a sealing effect, so that the helium ejected from the helium filling channel 132 enters the battery from the liquid injection hole without leaking out of the battery.

[0162] like Fig.14 As shown, the use method and working principle of the battery helium filling nail pressing mechanism 100 are as follows:

[0163] 1. In the initial state, the pressure rod 20 can be outside the first body 11, that is, it does not extend into the first pressure nail channel 111, or along the direction from the first pressure nail channel 111 to the second pressure nail channel 121, the pressure rod 20 extends into the first pressure nail channel 111 but is located upstream of the outlet of the nail delivery channel 112, so that the end of the pressure rod 20 will not hinder the operation of the glue nail 200 entering the second pressure nail channel 121 from the nail delivery channel 112.

[0164] 2. The glue nail 200 is fed into the first pressure nail channel 111 through the nail feeding channel 112, and the glue nail 200 falls to the entrance of the second pressure nail channel 121 under its own weight. At the same time, the second driving member 80 is controlled to drive the frame 70 to move downward as a whole, so that the sealing part 137 contacts the side of the battery injection hole, forming a sealed cavity connected to the injection hole, and the outlet of the third pressure nail channel 131 is opposite to the injection hole.

[0165] 3. Driven by the first driving member 30 , the pressing rod 20 continues to extend a certain distance, pressing the plastic nail 200 tightly against the second pressing nail channel 121 and blocking the second pressing nail channel 121 .

[0166] 4. Helium is filled into the injection hole and the interior of the battery through the helium filling channel 132.

[0167] 5. After the helium filling is completed, the pressure rod 20 continues to extend and move along the second pressure nail channel 121 and the third pressure nail channel 131, driving the rubber nail 200 to be pushed out from the outlet of the third pressure nail channel 131 and seal the injection hole, completing the sealing of the injection hole, and then the helium test can be carried out to measure the air tightness of the battery.

[0168] Through the battery helium filling nail pressing mechanism 100 of the present application, when there is a need for helium filling, the glue nail 200 finally stops in the second nail pressing channel 121, so the air outlet of the helium filling channel 132 is also at a certain distance from the glue nail 200, and the air outlet of the helium filling channel 132 is located between the second nail pressing channel 121 and the liquid injection hole, the helium filling channel 132 can always keep in communication with the liquid injection hole, when helium is injected into the liquid injection hole through the helium filling channel 132, the glue nail 200 will not hinder the entry of helium, and there is no obstacle at the liquid injection hole, so that the filling of helium will not fail, which greatly improves the success rate and operability of the helium filling nail pressing process.

[0169] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A nail pressing part, used in a battery helium filling nail pressing mechanism, characterized in that: include: The first body is provided with a first nail pressing channel and a nail feeding channel; The second body is provided with a second nail pressing channel, and the second nail pressing channel is connected with the first nail pressing channel and the nail feeding channel; The third body is provided with a third pressure nail channel, the third pressure nail channel is communicated with the second pressure nail channel, and the third body is further provided with a helium filling channel communicated with the third pressure nail channel; Among them, the first body, the second body and the third body are connected to each other, the first pressure nail channel, the second pressure nail channel and the third pressure nail channel are connected in sequence, and the second body is configured to cooperate with the glue nail so that the glue nail blocks the second pressure nail channel and separates the first pressure nail channel and the third pressure nail channel.

2. The nail pressing member according to claim 1, characterized in that: The third body is connected to the first body so that the second body is sandwiched between the first body and the third body.

3. The nail pressing member according to claim 2, characterized in that: The first body is provided with a first mounting hole for accommodating a portion of the second body, and the third body is provided with a second mounting hole for accommodating another portion of the second body.

4. The nail pressing member according to claim 3, characterized in that: The second mounting hole comprises a first hole segment and a second hole segment connected to each other, the first hole segment is in communication with the first mounting hole, and the hole diameter of the first hole segment is larger than the hole diameter of the second hole segment to form a first step surface; The second main body includes a first main body portion and a first protrusion portion, the first protrusion portion is arranged on the outer circumferential surface of the first main body portion and protrudes from the outer circumferential surface of the first main body portion, the first protrusion portion abuts against the first step surface, the second pressure nail channel is arranged on the first main body portion, and along the extension direction of the second pressure nail channel, the two ends of the first main body portion extend into the first mounting hole and the second hole section respectively.

5. The nail pressing member according to claim 2, characterized in that: The first body and the third body are detachably connected.

6. The nail pressing member according to claim 1, characterized in that: The second pressure nail channel includes a first sub-hole and a second sub-hole connected to each other, the first sub-hole is connected to the first pressure nail channel, and the second sub-hole is connected to the third pressure nail channel; Along the direction from the first pressing nail channel to the third pressing nail channel, the aperture of the first sub-hole gradually decreases.

7. The nail pressing member according to claim 6, characterized in that: The aperture of the second sub-hole is smaller than the aperture of the first nail pressing channel and the aperture of the nail feeding channel.

8. The nail pressing member according to claim 1, characterized in that: The third body includes a second body portion and a nozzle, the second body portion is connected to the first body, the nozzle is arranged on the second body portion and protrudes from one end of the second body portion away from the first body, the third pressure nail channel passes through the second body portion and the nozzle, and the helium filling channel is arranged on the second body portion.

9. The nail pressing member according to claim 8, characterized in that: The third body further comprises a sealing portion, which is sleeved on the nozzle and engaged with the nozzle.

10. The nail pressing member according to claim 9, characterized in that: The nozzle comprises a nozzle body and a second protrusion, wherein the second protrusion is arranged on the outer peripheral surface of the nozzle body and protrudes from the outer peripheral surface of the nozzle body; The sealing portion has a third mounting hole, and an annular groove is provided on the inner peripheral wall of the third mounting hole. The annular groove is snap-fitted with the second protruding portion.

11. The nail pressing member according to claim 1, characterized in that: The nail feeding channel has a nail entry opening and a nail exit opening, and the nail exit opening is connected to the first nail pressing channel.

12. The nail pressing member according to claim 1, characterized in that: The number of the helium filling channels is multiple.

13. A battery helium filling nail pressing mechanism, characterized in that: include: The pressing nail piece according to any one of claims 1 to 12; A pressure rod and a first driving member, wherein the first driving member is used to drive the pressure rod to move along the first pressure nail channel, the second pressure nail channel and the third pressure nail channel.

14. The battery helium filling nail pressing mechanism according to claim 13, characterized in that: The battery helium charging nail pressing mechanism also includes a first clamping block and a second clamping block, the first clamping block is connected to the output end of the first driving member, and the second clamping block is connected to the first clamping block and clamps the pressing rod.

15. The battery helium filling nail pressing mechanism according to claim 13, characterized in that: The battery helium charging nail pressing mechanism further includes a pressing rod guide block, which is arranged on the first main body. The pressing rod guide block has a guide hole for the pressing rod to slide through, and the guide hole is connected to the first nail pressing channel.

16. The battery helium filling nail pressing mechanism according to claim 13, characterized in that: The battery helium filling nail pressing mechanism also includes a frame and a second driving member that drives the frame to rise and fall, and the pressing rod, the first driving member and the nail pressing member are all arranged on the frame.

Images