Formation nail, battery and clamp

Abstract

The utility model relates to a formation nail, a battery and a clamp. The formation nail is used for sealing a liquid injection hole of a battery and comprises a sealing head and a clamping head, and the sealing head is used for being inserted into the liquid injection hole of the battery and is in interference fit with the liquid injection hole to seal the liquid injection hole; the clamping head is connected with one end of the sealing head, the clamping head is provided with a clamping part used for being clamped by a clamp, the outer wall of the clamping part is provided with a plurality of grooves distributed at intervals, and the friction force between the clamping part and the clamp can be increased. The formation nail can be used repeatedly (for the second time).

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to a formation nail, a battery and a clamp. Background Art

[0002] In the related art, the injection hole of the battery is sealed by a formation nail. In the sealing process specifically, the clamp clamps the clamping head of the formation nail, then drives the formation nail to move towards the injection hole of the battery, the sealing head of the formation nail is inserted into the injection hole, and the formation nail is sealed with the interference fit of the injection hole so that the formation nail seals the injection hole, and then the clamp releases the formation nail and moves away from the battery. In some cases, it is necessary to repeatedly insert and remove the formation nail (for example, when the electrolyte needs to be replaced), that is, the formation nail on the battery needs secondary use. But in actual application, it is found that when the clamp is applied to the extrusion force on the formation nail, the clamp and the formation nail are easy to slide, causing the formation nail to have an irreparable mark, causing the formation nail to be unable to be reused (unable to be reused), and increasing the production cost, and increasing the extrusion force easily causes the formation nail to be deformed, or the clamp cracks the formation nail, and produces the formation nail column crack, causing the formation nail to be unable to be reused (unable to be reused), and increasing the production cost of the battery. Utility Model Content

[0003] 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.

[0004] A forming nail, used for sealing a liquid injection hole of a battery, comprising:

[0005] A sealing head, which is used 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

[0006] The clamping head is connected to one end of the sealing head, and the clamping head has a clamping portion for clamping by a clamp, and the outer wall of the clamping portion has a plurality of grooves arranged at intervals.

[0007] In one embodiment, a plurality of the grooves are arranged at intervals along the circumference of the clamping portion.

[0008] In one embodiment, along the circumference of the clamping portion, the plurality of grooves are in a sawtooth thread shape.

[0009] In one embodiment, the plurality of grooves are arranged at equal intervals, the number of the grooves is greater than or equal to four, and the opening width of the grooves is greater than or equal to 0.1 mm.

[0010] 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 one end of the clamping head away from the sealing head.

[0011] In one embodiment, the sealing head is integrally formed with the clamping head; and / or

[0012] The sealing head and the clamping head are both made of rubber.

[0013] In one embodiment, the end surface of the clamping head connected to the sealing head has a fitting area that fits with the battery.

[0014] The utility model also provides a battery, comprising:

[0015] A battery body having a liquid injection hole; and

[0016] 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.

[0017] The utility model also provides a clamp for use with the above-mentioned chemical formation nail, including a clamping head for clamping the clamping part of the chemical formation nail, the clamping head 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 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 clamping with the groove.

[0018] 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.

[0019] When the above-mentioned formation nail is used in conjunction with the clamp to seal the injection hole of the battery, when the clamp is applied to the extrusion force on the formation nail when it is appropriate, simultaneously because the outer wall of the clamping portion is provided with a plurality of grooves arranged at intervals, the friction force between the clamping portion and the clamp can be increased, so that the clamping of the clamping portion and the clamp is more firm, it is not easy to cause the situation of slipping, thereby the clamping portion and the clamp can be solved to cause the formation nail to have an irreparable mark because of the sliding nail, causing the problem that the formation nail cannot be reused (cannot be used for secondary use). And after the friction force between the clamping portion and the clamp increases, the extrusion force applied by the clamp on the formation nail can not be increased, the extrusion force applied by the clamp on the formation nail can be maintained or even suitably reduced, thereby can solve the problem that the formation nail is deformed or the formation nail is cracked due to the increase in extrusion force, the formation nail column crack is produced, causing the problem that the formation nail cannot be reused (cannot be used for secondary use). Therefore the above-mentioned formation nail can be reused (recycled), thereby the above-mentioned formation nail can reduce the production cost of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of the clamp and the chemical nail used in conjunction with each other in one embodiment of the utility model;

[0022] Figure 2 for Figure 1 A front view of

[0023] Figure 3 For along Figure 2 A cross-sectional view of line AA shown;

[0024] Figure 4 It is a schematic diagram of the structure of a battery in one embodiment of the utility model;

[0025] Figure 5 This is a schematic structural diagram of a chemically formed nail in one embodiment of the present utility model;

[0026] Figure 6 for Figure 5 A front view of the end face of a clamping head for forming nails is shown. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0028] In the description of the present invention, 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 invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature 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. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] 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 a central 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 a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0033] like Figure 1-Figure 4 The clamp 200 in the preferred embodiment of the present invention can be used in conjunction with the formation nail 300 to seal the injection hole 410 of the battery 10 .

[0034] In the present 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 injection hole 410 of the battery 10, and is interference fit with the injection hole 410 to seal the injection hole 410. The clamping head 320 has a clamping portion 320a for clamping by the clamp 200. The clamp 200 includes a clamp 210 for clamping the clamping portion 320a of the formation nail 300. The clamp 210 can drive the formation nail 300 to move toward or away from the 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.

[0035] However, it is found in actual application that when the extrusion pressure applied by the clamp on the formation nail is appropriate, the clamp and the formation nail are easy to slip, resulting in irreparable marks on the formation nail, making the formation nail unable to be reused (cannot be used a second time), thereby increasing production costs, and increasing the extrusion pressure is likely to 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 (cannot be used a second time), thereby increasing the production cost of the battery.

[0036] In order to solve the above problem, in this embodiment, Figure 1 , Figure 5 and Figure 6 As shown, a plurality of grooves 322 arranged at intervals are provided on the outer wall of the clamping portion 320a, so that the friction between the clamping portion 320a and the fixture 200 can be increased. In this way, when the extrusion force applied by the fixture 200 to the formation nail 300 is appropriate, the friction between the clamping portion 320a and the fixture 200 can be increased because the outer wall of the clamping portion 320a is provided with a plurality of grooves 322 arranged at intervals, so that the clamping of the clamping portion 320a and the fixture 200 is more firmly clamped, and it is not easy to cause the situation of slipping, so that the clamping portion 320a and the fixture 200 can solve the problem that the formation nail 300 has irreparable marks due to the slipping of the nail, causing the formation nail 300 to be unable to be reused (cannot be used twice). Moreover, after the friction force between the clamping portion 320a and the clamp 200 is increased, the extrusion force applied by the clamp 200 to the formation nail 300 can be maintained or even appropriately reduced without increasing the extrusion force, thereby solving the problem that the formation nail 300 is deformed or the formation nail 300 is clamped and cracked due to the increase in the extrusion force, resulting in the formation nail 300 column crack, causing the formation nail 300 to be unable to be reused (cannot be used twice). Therefore, the formation nail 300 can be reused (used twice), so that the formation nail 300 can reduce the production cost of the battery 10.

[0037] In this embodiment, the plurality of grooves 322 are arranged at intervals along the circumference of the clamping portion 320a. In this way, it is very convenient for the clamp 200 to clamp the clamping portion 320a. It is understood that in other embodiments, the plurality of grooves 322 can also be arranged at intervals along the axial direction of the clamping portion 320a. It is understood that in other embodiments, the plurality of grooves 322 can also be arranged randomly.

[0038] In this embodiment, along the circumference of the clamping portion 320a, the plurality of grooves 322 are in the shape of sawtooth threads. That is, in this embodiment, along the circumference of the clamping portion 320a, the grooves 322 are continuously arranged, so that when the clamp 200 clamps the clamping portion 320a, it can be clamped from any direction without positioning to a specific clamping position, which is very convenient for the clamp 200 to clamp the clamping portion 320a. It can be understood that in other embodiments, along the circumference of the clamping portion 320a, the grooves 322 can also be arranged non-continuously, for example, the plurality of grooves 322 are divided into three groups facing each other, each group includes a plurality of grooves 322, and the position of each group of grooves 322 is the clamping position on one side of the clamp 200.

[0039] In this embodiment, the plurality of grooves 322 are arranged at equal intervals. In this way, the friction force at each location of the clamping portion 320a can be substantially consistent. It is understood that in other embodiments, the plurality of grooves 322 can also be arranged at unequal intervals.

[0040] In this embodiment, the number of the 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. In this way, it can be ensured that the friction between the clamping portion 320a and the clamp 200 is large. It can be understood that in other embodiments, the number and opening width of the grooves 322 are not limited to the above values.

[0041] In the present embodiment, one end of the groove 322 extends to the end surface where the clamping head 320 is 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 the present 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 can be 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), the non-clamping portion can be located at the end of the clamping portion 320a away from the sealing head 310, and the non-clamping portion can also connect the clamping portion 320a and the sealing head 310.

[0042] In this embodiment, the sealing head 310 and the clamping head 320 are integrally formed. In this way, it is very convenient to manufacture the above-mentioned chemical nail 300. It can be understood that in other embodiments, the sealing head 310 can also be connected to the clamping head 320 by welding, gluing, etc.

[0043] In the present embodiment, the material of the sealing head 310 and the material of the clamping head 320 are both rubber. In this way, it is not only convenient to make the above-mentioned chemical nail 300, but also very convenient for the sealing head 310 to be interference-fitted with 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 except rubber. It is understood that in other embodiments, the material of the sealing head 310 can also be any other deformable material except 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.

[0044] In this embodiment, the end surface where the clamping head 320 is connected to the sealing head 310 has a fitting area 324 that fits with the battery 10, that is, in this embodiment, the outer diameter of the clamping head 320 is larger than the outer diameter of the sealing head 310. In this way, the clamping head 320 can be prevented from entering the injection hole 410. It can be understood that in other embodiments, the fitting area 324 can be omitted, and in this case, the sealing head 310 and the clamping head 320 can be two parts of the same cylindrical rod with the same outer diameter.

[0045] In this embodiment, the chuck 210 can also drive the formation nail 300 to rotate in the injection hole 410. In this way, it is easier for the sealing head 310 to seal the injection hole 410. It is understandable that in other embodiments, the chuck 210 may not drive the formation nail 300 to rotate in the injection hole 410.

[0046] In this embodiment, the clamp 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 for engaging with the groove 322. In this way, the nail can be prevented from slipping by the dual means of limiting the groove 322 and the protrusion and increasing the friction between the groove 322 and the contact surface 212a.

[0047] In this embodiment, the chuck 210 includes a plurality of jaws 212 spaced along the circumference of the clamping portion 320a. Each jaw 212 has a partial contact surface 212a. In this way, it is very convenient for the chuck 210 to clamp and release the forming nail 300, and the plurality of jaws 212 (greater than or equal to three) spaced along the circumference of the clamping portion 320a can increase the contact area between the chuck 210 and the clamping portion 320a, and can further avoid the occurrence of the nail slipping. It is understood that in other embodiments, there may be only two jaws 212.

[0048] Specifically, in the present 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 the present embodiment, the contact surface 212a of each clamping jaw 212 has a protrusion. In this way, the chuck 210 has three protrusions, which can better prevent the nail from slipping. It is understood that in other embodiments, the chuck 210 may also have only one protrusion. In this way, it is easier for the protrusion of the chuck 210 to be engaged 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.

[0049] The utility model also provides a battery 10. Figure 4 As shown, the battery 10 includes a battery body 400 and the above-mentioned formation nail 300. The battery body 400 has a liquid injection hole 410. The sealing head 310 is inserted into the liquid injection hole 410 and is interference-fitted with the liquid injection hole 410 to seal the liquid injection hole 410.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0051] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached 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 having an interference fit 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, and the clamping head has a clamping portion for clamping by a clamp, and the outer wall of the clamping portion has a plurality of grooves arranged at intervals.

2. The chemically formed nail according to claim 1, characterized in that: The plurality of grooves are arranged at intervals along the circumference of the clamping portion.

3. The chemically formed nail according to claim 2, characterized in that: Along the circumference of the clamping portion, the plurality of grooves are in a sawtooth thread shape.

4. The chemically formed nail according to claim 2, characterized in that: The plurality of grooves are arranged at equal intervals, the number of the grooves is greater than or equal to four, and the opening width of the grooves is greater than or equal to 0.1 mm.

5. The chemically formed nail according to claim 2, characterized in that: One end of the groove extends to the end surface of the clamping head connected to the sealing head, and the other end extends to the end surface of the clamping head away from the sealing head.

6. The chemically formed nail according to claim 1, characterized in that: The sealing head and the clamping head are integrally formed; and / or The sealing head and the clamping head are both made of rubber.

7. The chemically formed nail according to claim 1, characterized in that: The end surface where the clamping head is connected to the sealing head has a fitting area that fits with the battery.

8. A battery, characterized in that: include: A battery body having a liquid injection hole; as well as According to any one of claims 1 to 7, the sealing head is inserted into the injection hole and has an interference fit with the injection hole to seal the injection hole.

9. A clamp for use with the chemically formed nail according to any one of claims 1 to 7, characterized in that: The invention comprises a chuck of the clamping part 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 part, and the contact surface is provided with a protrusion for clamping with the groove.

10. The clamp according to claim 9, characterized in that 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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