Formation nail, battery, and gripper

Abstract

The present application relates to a formation nail, a battery, and a gripper. The formation nail is configured to seal an electrolyte injection hole of a battery, comprising a sealing head and a gripping head, wherein the sealing head is configured to be inserted into the electrolyte injection hole of the battery for interference fit with the electrolyte injection hole to seal the electrolyte injection hole; and the gripping head is connected to one end of the sealing head and has a gripping portion configured to be gripped by a gripper, the outer wall of the gripping portion being provided with a plurality of grooves that are arranged at intervals, which can increase the friction between the gripping portion and the gripper. The formation nail can be reused.

Description

Forming nails, batteries and fixtures Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a chemical forming nail, a battery and a clamp. Background Art

[0002] In the related art, the liquid injection hole of battery is sealed by forming nail.In the sealing process specifically, fixture clamps the clamping head of forming nail, drives forming nail to move towards the liquid injection hole of battery then, the sealing head of forming nail inserts the liquid injection hole, and makes the forming nail seal the liquid injection hole with the interference fit of the liquid injection hole, then fixture unclamps forming nail and moves away from battery.In some cases, need to repeatedly plug and unplug forming nail (for example, when needs change electrolyte), that is, the forming nail on battery needs secondary use.But find in actual application, when fixture is applied to the extrusion force on forming nail suitable, fixture and forming nail easily slide nail, cause forming nail to have irreparable mark, cause forming nail to be unable to reuse (cannot secondary use), and increase production cost, and increase extrusion force and easily cause forming nail to be deformed, or clamp cracking forming nail, produce forming nail cylinder crack, cause forming nail to be unable to reuse (cannot secondary use), and increase the production cost of battery.

[0003] Application Contents

[0004] Based on this, it is necessary to provide a kind of chemical nail that can be reused (secondary use) in order to solve the above problems.

[0005] A forming nail for sealing a battery injection hole, comprising:

[0006] a sealing head, configured to be inserted into the liquid injection hole of the battery and to be interference fit with the liquid injection hole to seal the liquid injection hole; and

[0007] The clamping head is connected to one end of the sealing head. The clamping head has a clamping portion for being clamped by a clamp. The outer wall of the clamping portion has a plurality of grooves arranged at intervals.

[0008] In one embodiment, a plurality of the grooves are arranged at intervals along the axial direction of the clamping portion.

[0009] In one embodiment, a plurality of the grooves are arranged at intervals along the circumference of the clamping portion.

[0010] In one embodiment, along the circumference of the clamping portion, the plurality of grooves are in a sawtooth thread shape.

[0011] In one embodiment, the plurality of grooves are arranged at equal intervals.

[0012] In one embodiment, the number of the grooves is greater than or equal to four.

[0013] In one embodiment, the opening width of the groove is greater than or equal to 0.1 mm.

[0014] In one embodiment, one end of the groove extends to the end surface where the clamping head is connected to the sealing head, and the other end extends to the end surface of the clamping head away from the sealing head.

[0015] In one embodiment, the clamping head further comprises a non-clamping portion, the outer wall of the non-clamping portion is smooth, and the non-clamping portion is located at an end of the clamping portion away from the sealing head.

[0016] In one embodiment, the clamping head further includes a non-clamping portion, the outer wall of the non-clamping portion is smooth, and the non-clamping portion connects the clamping portion and the sealing head.

[0017] In one embodiment, the sealing head and the clamping head are integrally formed.

[0018] In one embodiment, the sealing head is made of rubber.

[0019] In one embodiment, the clamping head is made of rubber.

[0020] In one embodiment, the end surface where the clamping head is connected to the sealing head has a fitting area for fitting with the battery.

[0021] In one embodiment, the clamping head and the sealing head are both cylindrical rods, and the outer diameter of the clamping head is greater than the outer diameter of the sealing head.

[0022] In one embodiment, the clamping head is concentrically arranged with the sealing head.

[0023] In one embodiment, the sealing head and the clamping head are two parts of the same cylindrical rod.

[0024] The present application also provides a battery, comprising:

[0025] a battery body having a liquid injection hole; and

[0026] In the above-mentioned chemically formed nail, the sealing head is inserted into the liquid injection hole and is interference-fitted with the liquid injection hole to seal the liquid injection hole.

[0027] The present application also provides a clamp for use with the above-mentioned chemical nail, including a clamping head for clamping the clamping part of the chemical nail, the clamping head can drive the chemical nail to move toward or away from the injection hole and drive the chemical nail to rotate in the injection hole, the clamping head has a contact surface that can move toward or away from the clamping part, and the contact surface is provided with a protrusion for engaging with the groove.

[0028] In one embodiment, the chuck includes a plurality of jaws spaced apart along the circumference of the clamping portion, and each of the jaws has a portion of the contact surface.

[0029] When above-mentioned formation nail is used with the liquid injection hole of sealed battery with fixture, when fixture is applied to the extruding force on the formation nail suitable, simultaneously because the outer wall of clamping portion is provided with a plurality of grooves arranged at intervals, can increase the frictional force between clamping portion and the fixture, make the clamping of clamping portion and fixture more firm, be not easy to cause the situation of skidding, thereby can solve clamping portion and fixture and cause formation nail to have irreparable mark because of sliding nail, cause formation nail to be unable to reuse (cannot secondary use) problem.And after the frictional force between clamping portion and the fixture increases, can not increase the extruding force that fixture is applied to formation nail, can keep or even suitably reduce the extruding force that fixture is applied to formation nail, thereby can solve and cause formation nail to be deformed because of increasing extruding force, or clip cracking formation nail, produce formation nail cylinder crackle, cause formation nail to be unable to reuse (cannot secondary use) problem.Therefore above-mentioned formation nail can be reused (secondary use), thereby above-mentioned formation nail can reduce the production cost of battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] FIG1 is a schematic structural diagram of a clamp and a chemically formed nail used in conjunction with each other in one embodiment of the present application;

[0032] FIG2 is a front view of FIG1;

[0033] FIG3 is a cross-sectional view taken along line AA shown in FIG2 ;

[0034] FIG4 is a schematic structural diagram of a battery in an embodiment of the present application;

[0035] FIG5 is a schematic structural diagram of a chemically formed nail in one embodiment of the present application;

[0036] FIG6 is a front view of the end surface of the clamping head for forming nails shown in FIG5. DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0040] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0041] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0043] As shown in FIG. 1 to FIG. 4 , the clamp 200 in the preferred embodiment of the present application is used in conjunction with the formation nail 300 to seal the injection hole 410 of the battery 10 .

[0044] In this embodiment, the formation nail 300 includes a sealing head 310 and a clamping head 320. The clamping head 320 is connected to one end of the sealing head 310. The sealing head 310 is used to be inserted into the liquid injection hole 410 of the battery 10 and has an interference fit with the liquid injection hole 410 to seal the liquid injection hole 410. The clamping head 320 has a clamping portion 320a for being clamped by the clamp 200. The clamp 200 includes a clamping head 210 for clamping the clamping portion 320a of the formation nail 300. The clamping head 210 can move the formation nail 300 toward or away from the liquid injection hole 410. In the above-mentioned sealing device 10, the clamp 210 of the clamp 200 can clamp the clamping portion 320a of the formation nail 300, and the clamp 210 can drive the formation nail 300 to move toward or away from the injection hole 410, so that the formation nail 300 can be automatically inserted and removed at the injection hole 410 of the battery 10, which is very convenient for mass production.

[0045] However, in actual applications, it was found that when the extrusion force applied by the clamp on the formation nail was appropriate, the clamp and the formation nail were prone to slippage, resulting in irreparable marks on the formation nail, making the formation nail unable to be reused (unable to be used a second time), thereby increasing production costs. Increasing the extrusion pressure can easily cause the formation nail to deform, or clamp the formation nail, resulting in cracks in the formation nail column, making the formation nail unable to be reused (unable to be used a second time), thereby increasing the production cost of the battery.

[0046] In order to solve the above problems, in the present embodiment, as shown in Figures 1, 5 and 6, a plurality of grooves 322 are provided at intervals on the outer wall of the clamping portion 320a, thereby increasing the friction between the clamping portion 320a and the fixture 200. Like this, when the extrusion force applied by the fixture 200 on the formation nail 300 is appropriate, simultaneously because the outer wall of the clamping portion 320a is provided with a plurality of grooves 322 at intervals, the friction between the clamping portion 320a and the fixture 200 can be increased, making the clamping of the clamping portion 320a and the fixture 200 more secure, not prone to slipping, thereby solving the problem that the clamping portion 320a and the fixture 200 cause the formation nail 300 to have irreparable marks due to the slipping of the nail, causing the formation nail 300 to be unable to be reused (cannot be used twice). Furthermore, after the friction between the clamping portion 320a and the fixture 200 is increased, the extrusion force applied by the fixture 200 to the formation nail 300 does not increase, and the extrusion force applied by the fixture 200 to the formation nail 300 can be maintained or even appropriately reduced. This can solve the problem of deformation of the formation nail 300 or cracking of the formation nail 300 due to increased extrusion force, resulting in cracks in the formation nail 300 column and making the formation nail 300 unreusable (impossible to reuse a second time). Therefore, the formation nail 300 can be reused (reused a second time), thereby reducing the production cost of the battery 10.

[0047] In this embodiment, the plurality of grooves 322 are spaced apart along the circumference of the clamping portion 320a. This greatly facilitates the clamp 200 in clamping the clamping portion 320a. It is understood that in other embodiments, the plurality of grooves 322 may also be spaced apart along the axial direction of the clamping portion 320a. It is understood that in other embodiments, the plurality of grooves 322 may also be randomly arranged.

[0048] In this embodiment, the plurality of grooves 322 are arranged in a sawtooth-like spiral shape along the circumference of the clamping portion 320a. That is, in this embodiment, the grooves 322 are continuously arranged along the circumference of the clamping portion 320a. This allows the clamp 200 to clamp the clamping portion 320a from any orientation without having to locate it at a specific clamping location, greatly facilitating the clamp 200's clamping of the clamping portion 320a. It will be appreciated that in other embodiments, the grooves 322 may be arranged discontinuously along the circumference of the clamping portion 320a. For example, the plurality of grooves 322 may be divided into three opposing groups, each group comprising a plurality of grooves 322, with each group of grooves 322 located at a clamping location on one side of the clamp 200.

[0049] In this embodiment, the plurality of grooves 322 are arranged at equal intervals. This allows the frictional force at each location of the clamping portion 320a to be substantially uniform. It is understood that in other embodiments, the plurality of grooves 322 may also be arranged at unequal intervals.

[0050] In this embodiment, the number of grooves 322 is greater than or equal to four, and the opening width of the grooves 322 is greater than or equal to 0.1 mm. This ensures that the friction between the clamping portion 320a and the clamp 200 is relatively large. It will be understood that in other embodiments, the number and opening width of the grooves 322 are not limited to the above values.

[0051] In this embodiment, one end of the groove 322 extends to the end surface of the clamping head 320 connected to the sealing head 310, and the other end extends to the end surface of the clamping head 320 away from the sealing head 310. That is, in this embodiment, the entire clamping head 320 is the clamping portion 320a. Therefore, any part of the clamping head 320 clamped by the clamp 200 is the clamping portion 320a, which is very convenient for the clamp 200 to clamp the clamping portion 320a. It is understood that in other embodiments, the clamping head 320 also includes a non-clamping portion (the outer wall does not have the groove 322 and can be smooth), and the non-clamping portion can be located at the end of the clamping portion 320a away from the sealing head 310, or the non-clamping portion can connect the clamping portion 320a and the sealing head 310.

[0052] In this embodiment, the sealing head 310 and the clamping head 320 are integrally formed. This makes it very easy to manufacture the above-mentioned chemical nail 300. It is understood that in other embodiments, the sealing head 310 can also be connected to the clamping head 320 by welding, gluing, etc.

[0053] In the present embodiment, the material of the sealing head 310 and the material of the clamping head 320 are both rubber. This not only facilitates the production of the above-mentioned chemical nail 300, but also makes it very easy to achieve an interference fit between the sealing head 310 and the injection hole 410 to seal the injection hole 410. It is understood that in other embodiments, the material of the sealing head 310 can be rubber, and the material of the clamping head 320 can be any other material other than rubber. It is understood that in other embodiments, the material of the sealing head 310 can also be any other deformable material other than rubber, and the sealing head 310 can also be a combination of materials. For example, the sealing head 310 can include a metal sealing rod connected to the clamping head 320 and a sealing ring sleeved on the metal sealing rod.

[0054] In this embodiment, the end surface where the clamping head 320 connects to the sealing head 310 has a contact area 324 that contacts the battery 10. That is, in this embodiment, the outer diameter of the clamping head 320 is larger than that of the sealing head 310. This prevents the clamping head 320 from entering the injection hole 410. It will be appreciated that in other embodiments, the contact area 324 may be omitted, in which case the sealing head 310 and the clamping head 320 may be two parts of the same cylindrical rod with the same outer diameter.

[0055] In this embodiment, the chuck 210 can also drive the formation nail 300 to rotate in the injection hole 410. This makes it easier for the sealing head 310 to seal the injection hole 410. It is understood that in other embodiments, the chuck 210 may not drive the formation nail 300 to rotate in the injection hole 410.

[0056] In this embodiment, the chuck 200 has a contact surface 212a that can move toward or away from the clamping portion 320a. The contact surface 212a is provided with a protrusion that engages with the groove 322. This prevents nail slippage by both limiting the position of the groove 322 and the protrusion and increasing the friction between the groove 322 and the contact surface 212a.

[0057] In this embodiment, the chuck 210 includes multiple jaws 212 spaced circumferentially around the clamping portion 320a. Each jaw 212 has a partial contact surface 212a. This greatly facilitates the chuck 210 in gripping and releasing the formed nail 300. Furthermore, the circumferential spacing of multiple jaws 212 (three or more) along the clamping portion 320a increases the contact area between the chuck 210 and the clamping portion 320a, further preventing the nail from slipping. It is understood that in other embodiments, only two jaws 212 may be provided.

[0058] Specifically, in this embodiment, there are three clamping jaws 212. It is understood that in other embodiments, the number of clamping jaws 212 may be more than three. Specifically, in this embodiment, the contact surface 212a of each clamping jaw 212 has one protrusion. Thus, the clamping head 210 has three protrusions, which can better prevent nail slippage. It is understood that in other embodiments, the clamping head 210 may also have only one protrusion. This makes it easier for the protrusion of the clamping head 210 to engage with the groove 322 of the clamping portion 320a. It is understood that in other embodiments, the contact surface 212a of each clamping jaw 212 may also have at least two protrusions.

[0059] The present application also provides a battery 10. As shown in FIG4 , the battery 10 includes a battery body 400 and the aforementioned formation nail 300. The battery body 400 has a liquid injection hole 410. A sealing head 310 is inserted into the liquid injection hole 410 and forms an interference fit with the liquid injection hole 410 to seal the liquid injection hole 410.

[0060] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A chemically formed nail for sealing a battery injection hole, characterized in that: include: A sealing head, used for inserting into the liquid injection hole of the battery and interference fitting with the liquid injection hole to seal the liquid injection hole; as well as The clamping head is connected to one end of the sealing head. The clamping head has a clamping portion for being clamped by a clamp. The outer wall of the clamping portion has a plurality of grooves arranged at intervals.

2. The chemically formed nail according to claim 1, wherein: The plurality of grooves are arranged at intervals along the axial direction of the clamping portion.

3. The chemically formed nail according to claim 1, wherein: The plurality of grooves are arranged at intervals along the circumference of the clamping portion.

4. The chemically formed nail according to claim 3, characterized in that: Along the circumference of the clamping portion, the plurality of grooves are in a sawtooth thread shape.

5. The chemically formed nail according to claim 3, wherein: The plurality of grooves are arranged at equal intervals.

6. The chemically formed nail according to claim 3, wherein: The number of the grooves is greater than or equal to four.

7. The chemically formed nail according to claim 3, wherein: The opening width of the groove is greater than or equal to 0.1 mm.

8. The chemically formed nail according to claim 3, wherein: One end of the groove extends to the end surface where the clamping head is connected to the sealing head, and the other end extends to the end surface of the clamping head away from the sealing head.

9. The chemically formed nail according to claim 1, wherein: The clamping head further comprises a non-clamping portion, the outer wall of the non-clamping portion is smooth, and the non-clamping portion is located at an end of the clamping portion away from the sealing head.

10. The chemically formed nail according to claim 1, wherein: The clamping head further includes a non-clamping portion, the outer wall of the non-clamping portion is smooth, and the non-clamping portion connects the clamping portion and the sealing head.

11. The chemically formed nail according to claim 1, wherein: The sealing head and the clamping head are integrally formed.

12. The chemically formed nail according to claim 1, wherein: The sealing head is made of rubber.

13. The chemically formed nail according to claim 12, wherein: The material of the clamping head is rubber.

14. The chemically formed nail according to claim 1, wherein: The end surface where the clamping head is connected to the sealing head has a fitting area for fitting with the battery.

15. The chemically formed nail according to claim 1, wherein: The clamping head and the sealing head are both cylindrical rods, and the outer diameter of the clamping head is greater than the outer diameter of the sealing head.

16. The chemically formed nail according to claim 15, characterized in that: The clamping head is concentrically arranged with the sealing head.

17. The chemically formed nail according to claim 1, wherein: The sealing head and the clamping head are two parts of the same cylindrical rod.

18. A battery, characterized in that: include: A battery body having a liquid injection hole; as well as The chemically formed nail according to any one of claims 1 to 17, wherein the sealing head is inserted into the liquid injection hole and has an interference fit with the liquid injection hole to seal the liquid injection hole.

19. A clamp for use with the chemically formed nail according to any one of claims 1 to 17, characterized in that: The invention comprises a chuck of the clamping portion for clamping the chemical formation nail, the chuck can drive the chemical formation nail to move toward or away from the injection hole and drive the chemical formation nail to rotate in the injection hole, the chuck has a contact surface that can move toward or away from the clamping portion, and the contact surface is provided with a protrusion for engaging with the groove.

20. The clamp according to claim 19, wherein The chuck includes a plurality of jaws spaced apart along the circumference of the clamping portion, and each of the jaws has a portion of the contact surface.

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