Explosion-proof valve patch, cover plate assembly with explosion-proof valve patch and battery monomer

Abstract

The utility model provides an explosion-proof valve patch, a cover plate assembly with the explosion-proof valve patch and a battery monomer, the explosion-proof valve patch is used for the battery monomer, the explosion-proof valve patch comprises a patch body and an identification layer, the identification layer is arranged on one side of the patch body in the thickness direction, the patch body is a transparent part, and the identification layer is a non-transparent part. According to the explosion-proof valve patch, the identification layer is the non-transparent piece, so that a machine can conveniently identify whether the explosion-proof valve patch is pasted or not, the explosion-proof valve patch can be prevented from being missed to be pasted, and meanwhile, the identification accuracy of the machine can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery monomer assembly manufacturing, in particular to an explosion-proof valve patch and a cover plate component and a battery monomer having the same. Background Art

[0002] In the existing battery cell solution, when the explosion-proof valve patch is mounted on the explosion-proof valve, the explosion-proof valve patch is not easy to identify, which increases the difficulty of machine recognition and is not conducive to the machine detecting whether the explosion-proof valve patch is mounted on the explosion-proof valve. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an explosion-proof valve patch, which can facilitate machine identification of the explosion-proof valve patch.

[0004] The utility model also provides a cover plate assembly having the explosion-proof valve patch.

[0005] The utility model also provides a battery monomer having the cover plate assembly.

[0006] The explosion-proof valve patch according to the embodiment of the utility model is used for a battery cell. The explosion-proof valve patch includes a patch body and an identification layer. The identification layer is arranged on one side of the patch body in the thickness direction. The patch body is a transparent part, and the identification layer is a non-transparent part.

[0007] According to the explosion-proof valve patch of the utility model, the identification layer is set as a non-transparent part, which can facilitate the machine to identify whether the explosion-proof valve patch is installed, thereby avoiding missing the explosion-proof valve patch and at the same time, it can also increase the accuracy of machine recognition.

[0008] According to some embodiments of the present invention, the identification layer is an adhesive layer, and the explosion-proof valve patch is configured to be adhesively connected to the end cover of the battery cell through the identification layer.

[0009] According to some embodiments of the present invention, at least a portion of the upper surface of the patch body is formed as a drainage surface, and the drainage surface is an inclined surface extending downward and toward at least a portion of the circumference of the patch body.

[0010] According to some optional embodiments of the present invention, the drainage surface is formed as a conical surface extending downwardly from the middle toward the surrounding areas.

[0011] According to some embodiments of the present invention, the angle between the drainage surface and the horizontal plane is 3°-15°.

[0012] According to some embodiments of the present invention, the identification layer extends in a ring shape along the circumference of the patch body, and the width of the identification layer is 1mm-3mm; and / or the thickness of the patch body is 0.1mm-0.5mm.

[0013] According to some embodiments of the present utility model, an exhaust hole is provided on the patch body, and the exhaust hole penetrates the patch body along the thickness direction of the patch body, and the diameter of the exhaust hole is 0.01mm-0.1mm.

[0014] According to some optional embodiments of the present invention, the exhaust hole is arranged in the middle position of the patch body.

[0015] According to the cover plate assembly of the embodiment of the second aspect of the utility model, it includes: a cover plate, which is provided with a through hole; an explosion-proof valve, which is arranged in the through hole; and an explosion-proof valve patch according to the first aspect of the utility model, which is arranged on a side of the cover plate away from the electrode assembly and covers the through hole.

[0016] According to the cover plate assembly of the utility model, by setting the explosion-proof valve patch of the first embodiment mentioned above and setting the identification layer as a non-transparent part, it can be convenient for the machine to identify whether the explosion-proof valve patch is installed, thereby avoiding missing the explosion-proof valve patch and at the same time, it can also increase the accuracy of machine recognition.

[0017] The cover assembly according to the third aspect of the present invention comprises: a shell and the cover assembly according to the second aspect of the present invention, one side of the shell is open to form an open opening, and the cover assembly is arranged to cover the open opening.

[0018] According to the battery cell of the utility model, by setting the cover plate assembly of the above-mentioned second embodiment, setting the explosion-proof valve patch of the above-mentioned first embodiment on the cover plate assembly, and setting the identification layer as a non-transparent part, it can be convenient for the machine to identify whether the explosion-proof valve patch is installed, thereby avoiding missing the explosion-proof valve patch, and at the same time, it can also increase the accuracy of machine recognition.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a cover plate assembly at one angle according to an embodiment of the second aspect of the utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of another angle of the cover assembly shown in ;

[0022] Figure 3is along Figure 2 Sectional view along line AA;

[0023] Figure 4 yes Figure 2 An exploded view of the cover assembly shown in ;

[0024] Figure 5 yes Figure 4 An exploded view of the explosion-proof valve patch shown in;

[0025] Figure 6 yes Figure 5 A partial schematic diagram of the cover assembly shown in .

[0026] Reference numerals:

[0027] 100. Explosion-proof valve patch;

[0028] 10. patch body; 11. drainage surface; 12. exhaust hole;

[0029] 20. Identification layer;

[0030] 200, cover plate; 210, through hole;

[0031] 300, explosion-proof valve;

[0032] 1000. Cover plate assembly. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] Please refer to the following Figure 1-Figure 6 The explosion-proof valve patch 100 according to an embodiment of the present invention is described.

[0035] Reference Figure 1 , Figure 4 and Figure 5 According to the explosion-proof valve patch 100 of the embodiment of the utility model, the explosion-proof valve patch 100 is used for a battery cell. The explosion-proof valve patch 100 includes a patch body 10 and an identification layer 20. The identification layer 20 is arranged on the patch body 10 in the thickness direction (such as Figure 4 The patch body 10 shown in the vertical direction) on one side (such as Figure 4 The patch body 10 is a transparent part, and the identification layer 20 is a non-transparent part.

[0036] For example, Figure 1 , Figure 4 and Figure 5 As shown, the identification layer 20 is disposed on the lower side of the patch body 10 , and the identification layer 20 is a colored non-transparent member. Preferably, the identification layer 20 can be green, blue, red or other colors that are easy to identify.

[0037] The explosion-proof valve patch 100 of the utility model sets the identification layer 20 as a non-transparent part. When checking whether the explosion-proof valve patch 100 is mounted on the explosion-proof valve 300, the machine can determine whether the explosion-proof valve patch 100 is mounted on the explosion-proof valve 300 by identifying the identification layer 20, thereby facilitating the machine to identify the explosion-proof valve patch 100 and avoiding missing the explosion-proof valve patch 100. At the same time, the non-transparent part can also increase the accuracy of machine recognition and improve the efficiency of machine recognition.

[0038] According to the explosion-proof valve patch 100 of the embodiment of the utility model, the identification layer 20 is set as a non-transparent member, which can facilitate the machine to identify whether the explosion-proof valve patch 100 is installed, thereby avoiding the explosion-proof valve patch 100 from being missed, and at the same time, it can also increase the accuracy of machine recognition.

[0039] According to some embodiments of the present invention, referring to Figure 4 and Figure 5 , the identification layer 20 is an adhesive layer, and the explosion-proof valve patch 100 is configured to be bonded to the end cap of the battery cell through the identification layer 20. Thus, the explosion-proof valve patch 100 can be conveniently bonded to the battery cell, and at the same time, the explosion-proof valve patch 100 can be prevented from being separated from the explosion-proof valve 300. Preferably, the explosion-proof valve patch 100 is an adhesive tape, which can ensure the bonding strength between the explosion-proof valve patch 100 and the end cap of the battery cell. At the same time, the adhesive tape is low in cost and convenient for mass use.

[0040] According to some embodiments of the present invention, referring to Figure 2 , Figure 3 and Figure 5 , the upper side surface of the patch body 10 (such as Figure 3 At least a portion of the upper surface of the patch body 10 shown in the figure is formed as a drainage surface 11, that is, a portion of the upper surface of the patch body 10 can be formed as the drainage surface 11, or the entire upper surface of the patch body 10 can be formed as the drainage surface 11, and the drainage surface 11 is an inclined surface extending downward and toward at least a portion of the circumference of the patch body 10, that is, the drainage surface 11 can be an inclined surface extending downward and toward a portion of the circumference of the patch body 10, or the drainage surface 11 can also be an inclined surface extending downward and toward the circumference of the patch body 10.

[0041] Therefore, the drainage surface 11 can guide the liquid to flow on the patch body 10 and prevent the liquid from staying on the patch body 10. In this way, even if electrolyte drips on the patch body 10, the electrolyte can flow out of the patch body 10 along the guide surface, preventing the electrolyte from flowing into the explosion-proof valve 300 from the patch body 10 and corroding the explosion-proof valve 300, thereby protecting the explosion-proof valve 300 and avoiding failure and damage of the explosion-proof valve 300.

[0042] For example, Figure 2 , Figure 3 and Figure 5 As shown, the upper surface of the patch body 10 is formed as a drainage surface 11, and the drainage surface 11 is an inclined surface extending downward and toward the periphery of the patch body 10, so that liquids such as electrolytes can flow out of the patch body 10 easily.

[0043] According to some optional embodiments of the present invention, referring to Figure 2 , Figure 3 and Figure 5 The drainage surface 11 is formed as a conical surface extending downwardly from the middle toward the surroundings. Thus, the conical surface can further facilitate the liquid to flow out of the patch body 10 from the drainage surface 11.

[0044] According to some embodiments of the present invention, referring to Figure 2 , Figure 3 and Figure 5 , the angle between the drainage surface 11 and the horizontal plane is 3°-15°. Thus, it is possible to avoid the angle between the drainage surface 11 and the horizontal plane being too large, so that the patch body 10 contacts other battery cells after protruding, preventing the patch body 10 from piercing adjacent battery cells. At the same time, it is also possible to avoid the angle between the drainage surface 11 and the horizontal plane being too small, so that the electrolyte and other liquids can flow normally on the drainage surface 11.

[0045] For example, Figure 2 , Figure 3 and Figure 5 As shown, the angle between the drainage surface 11 and the horizontal plane can be 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14° or 15°.

[0046] According to some embodiments of the present invention, referring to Figure 4 and Figure 5 The identification layer 20 extends in a ring shape along the circumference of the patch body 10, and the width of the identification layer 20 is 1mm-3mm. Thus, the identification layer 20 can be prevented from being too narrow, which is convenient for machine recognition. At the same time, the identification layer 20 can be prevented from being too wide to increase the cost of the explosion-proof valve patch 100, thereby reducing the production cost of the explosion-proof valve patch 100.

[0047] For example, Figure 4 and Figure 5As shown, the width of the identification layer 20 can be: 1mm, 1.5mm, 2mm, 2.5mm or 3mm. Preferably, the shape of the identification layer 20 is set according to the shape of the explosion-proof valve 300, so as to increase the applicability of the explosion-proof valve patch 100.

[0048] Furthermore, if Figure 4 and Figure 5 As shown, the thickness of the patch body 10 is 0.1 mm-0.5 mm. Thus, it is possible to avoid the patch body 10 being too thin, which affects the strength of the patch body 10, and at the same time, it is possible to avoid the body 10 being too thick, which increases the manufacturing cost of the patch body 10.

[0049] For example, Figure 4 and Figure 5 As shown, the thickness of the patch body 10 can be: 0.1mm, 0.2mm, 0.3mm, 0.4mm or 0.5mm. Preferably, the material of the patch body 10 can be a plastic material such as PET (polyethylene terephthalate), PP (polypropylene) or PE (polyethylene), so that the strength of the patch body 10 can be ensured and the weight of the patch body 10 can be reduced.

[0050] According to some embodiments of the present invention, referring to Figure 4 and Figure 5 The patch body 10 is provided with an exhaust hole 12, which penetrates the patch body 10 along the thickness direction of the patch body 10, and the diameter of the exhaust hole 12 is 0.01mm-0.1mm. As a result, the gas in the battery cell can be discharged from the exhaust hole 12 to the outside of the battery cell, thereby avoiding excessive gas inside the battery cell and affecting the service life of the battery cell. At the same time, limiting the diameter of the exhaust hole 12 can avoid the exhaust hole 12 being too large to cause debris to enter the explosion-proof valve 300 from the exhaust hole 12, and can also avoid the exhaust hole 12 being too small to affect the discharge of gas from the battery cell.

[0051] For example, Figure 4 and Figure 5 As shown, the diameter of the exhaust hole 12 can be 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm or 0.1 mm.

[0052] According to some embodiments of the present invention, referring to Figure 4 and Figure 5 The exhaust hole 12 is arranged in the middle of the patch body 10. Thus, the gas can be easily discharged from the battery cell through the exhaust hole 12.

[0053] According to the cover plate 200 assembly of the second embodiment of the utility model, refer to Figure 1 , Figure 2and Figure 4 , comprising: a cover plate 200, an explosion-proof valve 300 and an explosion-proof valve patch 100 of the first aspect of this embodiment. The cover plate 200 is provided with a through hole 210; the explosion-proof valve 300 is arranged in the through hole 210; the explosion-proof valve patch 100 is arranged on a side of the cover plate 200 away from the electrode assembly (such as Figure 4 The cover plate 200 is shown on the upper side thereof and covers the through hole 210 .

[0054] For example, Figure 1 and Figure 2 As shown, a circular through hole 210 is provided on the cover plate 200 , the explosion-proof valve 300 is provided in the through hole 210 , the explosion-proof valve patch 100 is attached to the cover plate 200 , and the explosion-proof valve patch 100 is located on the upper side of the explosion-proof valve 300 .

[0055] According to the cover plate 200 assembly of the embodiment of the utility model, by setting the explosion-proof valve patch 100 of the above-mentioned first aspect embodiment and setting the identification layer 20 as a non-transparent part, it is convenient for the machine to identify whether the explosion-proof valve patch 100 is installed, thereby avoiding the explosion-proof valve patch 100 from being missed, and at the same time, the accuracy of machine recognition can be increased.

[0056] According to the battery cell of the third embodiment of the utility model, Figure 1 and Figure 2 , including: a shell and a cover plate 200 component of the second aspect of this embodiment, one side of the shell is opened to form an open opening, and the cover plate 200 component is covered at the open opening.

[0057] According to the battery cell of the embodiment of the utility model, by setting the cover plate 200 component of the above-mentioned second embodiment, setting the explosion-proof valve patch 100 of the above-mentioned first embodiment on the cover plate 200 component, and setting the identification layer 20 as a non-transparent part, it can be convenient for the machine to identify whether the explosion-proof valve patch 100 is installed, thereby avoiding the explosion-proof valve patch 100 from being missed, and at the same time, it can also increase the accuracy of machine recognition.

[0058] Reference below Figure 1-Figure 6 A battery cell according to an embodiment of the present invention is described.

[0059] According to the battery cell of the embodiment of the utility model, Figure 1 The battery cell includes: a shell and a cover plate 200 assembly, the upper side of the shell is opened to form an open opening, and the cover plate 200 assembly is covered at the open opening.

[0060] The cover plate 200 assembly includes: a cover plate 200, an explosion-proof valve 300 and an explosion-proof valve patch 100. The cover plate 200 is provided with a through hole 210, the explosion-proof valve 300 is arranged in the through hole 210, the explosion-proof valve patch 100 is attached to the cover plate 200, and the explosion-proof valve patch 100 is located on the upper side of the explosion-proof valve 300.

[0061] The explosion-proof valve patch 100 includes: a patch body 10 and an identification layer 20. Specifically, the patch body 10 is circular, the identification layer 20 is annular, the identification layer 20 is arranged on the lower side of the patch body 10, the body 10 is a transparent part, and the identification layer 20 is a non-transparent part. The upper side of the patch body 10 is formed as a drainage surface 11, and the drainage surface 11 is formed as a conical surface extending downward from the middle toward the surroundings, and the angle between the drainage surface 11 and the horizontal plane is 3°-15°. An exhaust hole 12 is formed in the middle of the patch body 10, and the exhaust hole 12 passes through the patch body 10 in the up and down direction.

[0062] When assembling the battery cell, first set the explosion-proof valve 300 in the through hole 210, then adhere the identification layer 20 to the lower side of the patch body 10, and then adhere the explosion-proof valve patch 100 to the cover plate 200 through the identification layer 20, and then cover the cover plate 200 assembly on the open mouth of the shell. At this time, the assembly of the battery cell is completed.

[0063] The battery cell of the utility model is provided with the cover plate 200 assembly of the second embodiment, the explosion-proof valve patch 100 of the first embodiment is provided on the cover plate 200 assembly, and the identification layer 20 is set as a non-transparent member, which can facilitate the machine to identify whether the explosion-proof valve patch 100 is installed, thereby avoiding the explosion-proof valve patch 100 from being missed, and at the same time, can also increase the accuracy of machine recognition.

[0064] 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.

[0065] 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 one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0066] 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, an electrical connection, or a communication; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An explosion-proof valve patch for a battery cell, characterized in that: The explosion-proof valve patch includes a patch body and an identification layer, wherein the identification layer is arranged on one side of the body in the thickness direction, the patch body is a transparent part, and the identification layer is a non-transparent part.

2. The explosion-proof valve patch according to claim 1, characterized in that: The identification layer is an adhesive layer, and the explosion-proof valve patch is configured to be adhesively connected to the end cover of the battery cell through the identification layer.

3. The explosion-proof valve patch according to claim 1, characterized in that: At least a portion of the upper surface of the patch body is formed as a drainage surface, and the drainage surface is an inclined surface extending downward and obliquely toward at least a portion of the circumference of the patch body.

4. The explosion-proof valve patch according to claim 3, characterized in that: The drainage surface is formed as a conical surface extending downwardly from the middle toward the surroundings.

5. The explosion-proof valve patch according to claim 3, characterized in that: The angle between the drainage surface and the horizontal plane is 3°-15°.

6. The explosion-proof valve patch according to claim 1, characterized in that: The identification layer extends in a ring shape along the circumference of the patch body, and the width of the identification layer is 1 mm-3 mm; and / or, The thickness of the body is 0.1 mm-0.5 mm.

7. The explosion-proof valve patch according to claim 1, characterized in that: The patch body is provided with an exhaust hole, which penetrates the patch body along the thickness direction of the patch body, and the diameter of the exhaust hole is 0.01mm-0.1mm.

8. The explosion-proof valve patch according to claim 7, characterized in that: The exhaust hole is arranged in the middle of the patch body.

9. A cover plate assembly, characterized in that: include: A cover plate, wherein the cover plate is provided with a through hole; An explosion-proof valve, the explosion-proof valve being arranged in the through hole; According to any one of claims 1-8, the explosion-proof valve patch is arranged on a side of the cover plate away from the electrode assembly and covers the through hole.

10. A battery cell, characterized in that: include: A shell and a cover plate assembly according to claim 9, wherein one side of the shell is open to form an open opening, and the cover plate assembly is arranged to cover the open opening.

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