Electromagnetic shielding structure applied to battery or capacitor or supercapacitor

Abstract

The utility model discloses an electromagnetic shielding structure applied to a battery or a capacitor or a super capacitor, which is applied to a body taking the battery or the capacitor or the super capacitor as an electromagnetic shielding object, and the body is provided with an anode pin and a cathode pin. The electromagnetic shielding structure comprises a shielding shell and a shielding cover body covering the shielding shell; the shielding cover body is provided with a first through hole and a second through hole. The body is arranged in the shielding shell, the positive electrode pin penetrates through the first penetrating hole and extends out of the electromagnetic shielding structure, and the negative electrode pin penetrates through the second penetrating hole and extends out of the electromagnetic shielding structure. According to the electromagnetic shielding structure, the body taking the battery or the capacitor or the super capacitor as a shielding object is sealed in the electromagnetic shielding structure, so that the body of the battery or the capacitor or the super capacitor is isolated in a relatively sealed space after generating an electromagnetic field, and an electromagnetic shielding effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical fields of batteries, capacitors and supercapacitors, and particularly relates to an electromagnetic shielding structure applied to a battery or a capacitor or a supercapacitor. Background Art

[0002] With the development of battery technology and the maturity of winding technology, many battery products such as batteries, capacitors and supercapacitors use the winding technology to manufacture battery cores. Wound batteries are used not only in instrumentation, power tools, fitness equipment, medical devices, solar lamps, power transmission equipment, and various backup power supplies, but also mainly used to replace traditional automotive batteries for emergency starting of vehicles. However, due to the inherent characteristics of wound products, an electromagnetic field is inevitably generated at the end face. In many high-precision and high-sensitivity application scenarios, this tiny electromagnetic field will also cause interference. Therefore, the utility model provides an electromagnetic shielding structure applied to a battery or a capacitor or a supercapacitor to limit the electromagnetic field inside the electromagnetic shielding structure. Summary of the Invention

[0003] The purpose of the utility model is to provide an electromagnetic shielding structure applied to a battery or a capacitor or a supercapacitor to solve the problems raised in the above background art. To achieve the above purpose, the utility model provides the following technical solutions:

[0004] An electromagnetic shielding structure applied to a battery or a capacitor or a supercapacitor is applied to a body with a battery or a capacitor or a supercapacitor as the electromagnetic shielding object. The body is provided with a positive electrode pin and a negative electrode pin. The electromagnetic shielding structure includes a shielding shell and a shielding cover body covering the shielding shell. The shielding cover body is provided with a first through hole and a second through hole. The body is arranged in the shielding shell, and the positive electrode pin passes through the first through hole and extends out of the electromagnetic shielding structure, and the negative electrode pin passes through the second through hole and extends out of the electromagnetic shielding structure.

[0005] Further, the shielding shell is made of a conductive metal material.

[0006] Further, the shielding shell is wound and sealed with the shielding cover body.

[0007] Further, the shielding cover body includes an insulating layer and a first shielding layer arranged on the insulating layer. The insulating layer is used to insulate between the positive electrode pin and the negative electrode pin.

[0008] Further, the first shielding layer is made of conductive metal and includes a positive welding portion welded to the positive electrode pin, a negative welding portion welded to the negative electrode pin, and an edge welding portion welded to the shielding housing; the edge welding portion wraps around the outer periphery of the positive welding portion and the negative welding portion, and a first insulating ring is provided between the positive welding portion and the edge welding portion.

[0009] Further, a second insulating ring is provided between the negative welding portion and the edge welding portion.

[0010] Further, the shielding cover body further includes a second shielding layer provided below the insulating layer.

[0011] Further, the second shielding layer is provided with a third insulating ring respectively wrapping around the outer periphery of the first through hole and the outer periphery of the second through hole.

[0012] Further, the shielding cover body is made by PCB technology.

[0013] Further, the positive welding portion is welded to the positive electrode pin by soldering, the negative welding portion is welded to the negative electrode pin by soldering, and the edge welding portion is welded to the shielding housing by soldering.

[0014] The beneficial effects of the present utility model are as follows: By enclosing the body with a battery or a capacitor or a supercapacitor as the shielding object inside the electromagnetic shielding structure, the body is isolated in a relatively sealed space after generating an electromagnetic field, so as to achieve the effect of electromagnetic shielding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic cross-sectional view of Embodiment 1 in the present utility model.

[0017] Figure 2 It is a schematic structural view of Embodiment 1 in the present utility model.

[0018] Figure 3 It is a schematic structural view of the shielding cover body of Embodiment 1 in the present utility model.

[0019] Figure 4 It is a schematic cross-sectional view of the shielding cover body of Embodiment 1 in the present utility model.

[0020] Figure 5 Schematic structural diagram of the shielding cover body in the second embodiment of the present utility model

[0021] Figure 6 Schematic sectional view of the shielding cover body in the second embodiment of the present utility model.

[0022] Figure 7 Schematic sectional view of the shielding cover body in the third embodiment of the present utility model.

[0023] Figure 8 Schematic sectional view of the shielding cover body in the fourth embodiment of the present utility model.

[0024] It should be noted that the drawings are not necessarily drawn to scale, but are only shown in a schematic manner that does not affect the reader's understanding. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] In the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0027] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific circumstances.

[0028] In addition, the terms "installation", "setting", "provided with", "connection", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In addition, terms such as "first", "second", etc. are mainly used to distinguish different devices, components or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, components or parts. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] It should also be understood that the terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in the specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0031] It should be further understood that the term "and / or" used in the specification of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] Embodiment 1:

[0033] As Figure 1 and Figure 2 shown, an electromagnetic shielding structure applied to a battery or a capacitor or a supercapacitor is applied to a body 1 with a battery or a capacitor or a supercapacitor as an electromagnetic shielding object. The body 1 is provided with a positive electrode pin 11 and a negative electrode pin 12. The electromagnetic shielding structure includes a shielding housing 2 and a shielding cover body 3 covering the shielding housing 2. The shielding cover body 3 is provided with a first through hole 301 and a second through hole 302. The body 1 is disposed in the shielding housing 2, and the positive electrode pin 11 passes through the first through hole 301 and extends out of the electromagnetic shielding structure, and the negative electrode pin 12 passes through the second through hole 302 and extends out of the electromagnetic shielding structure.

[0034] As an example, this electromagnetic shielding structure is applied to the body 1 with a battery, capacitor, or supercapacitor as the object of electromagnetic shielding. The body 1 is provided with a positive electrode pin 11 and a negative electrode pin 12. The types of the body 1 include but are not limited to batteries, capacitors, and supercapacitors; the positive electrode pin 11 and the negative electrode pin 12 are integrated with the body 1. The electromagnetic shielding structure includes a shielding housing 2 and a shielding cover body 3 covering the shielding housing 2. Both the shielding housing 2 and the shielding cover body 3 are made of materials with electromagnetic shielding properties. Before assembly, the shielding housing 2 and the shielding cover body 3 are in an unassembled state; the shielding cover body 3 is provided with a first through hole 301 and a second through hole 302 corresponding to the positive electrode pin 11 and the negative electrode pin 12. During assembly, first, the body 1 is placed into the shielding housing 2 so that the body 1 is inside the shielding housing 2, and the lengths of the positive electrode pin 11 and the negative electrode pin 12 are sufficient for them to extend out of the shielding housing 2; then, the shielding cover body 3 is placed above the body 1, so that the positive electrode pin 11 passes through the first through hole 301 and the negative electrode pin 12 passes through the second through hole 302; finally, the shielding cover body 3 is moved downward until it covers the shielding housing 2 to form a relatively sealed electromagnetic shielding structure, thereby enclosing the body 1 inside the electromagnetic shielding structure, realizing the secondary packaging of the body 1, and isolating the body 1 in a relatively sealed space after the body 1 generates an electromagnetic field, achieving the effect of electromagnetic shielding.

[0035] In one embodiment, the shielding housing 2 is made of a conductive metal material.

[0036] As an example, the shielding housing 2 is made of aluminum to confine the electromagnetic field within the internal area of the electromagnetic shielding structure. In some other embodiments, it can also be made of metal materials such as copper and steel or other electromagnetic shielding body materials.

[0037] In one embodiment, the shielding housing 2 roll-seals the shielding cover body 3.

[0038] As an example, during assembly, after placing the body 1 into the shielding housing 2 and covering the shielding cover body 3, the shielding housing 2 is roll-sealed by a roll-sealing machine to seal the shielding cover body 3, realizing the connection and fastening of the shielding housing 2 and the shielding cover body 3. This embodiment only exemplarily adopts the roll-sealing fixing method for further welding and sealing treatment; in some other embodiments, a connection structure with internal and external threads can also be provided on the shielding housing 2 and the shielding cover body 3, and the shielding housing 2 and the shielding cover body 3 are screwed and fastened by rotating the shielding housing 2; the shielding housing 2 and the shielding cover body 3 can also be snap-connected and fastened by a snap connection structure or other means.

[0039] In one embodiment, refer to Figure 3 and Figure 4, the shielding cover 3 includes an insulating layer 31 and a first shielding layer 32 disposed on the insulating layer 31. The insulating layer 31 is used to insulate the positive electrode pin 11 and the negative electrode pin 12 from each other.

[0040] As an example, the shielding cover 3 has a double-layer structure and is composed of the first shielding layer 32 and the insulating layer 31. The first shielding layer 32 is disposed on the insulating layer 31. When the shielding cover 3 is covered on the shielding housing 2, the insulating layer 31 faces the body 1 inside the shielding housing 2. The first shielding layer 32 is made of a material with electromagnetic shielding properties. Under the combined action of the first shielding layer 32 and the shielding housing 2, the body 1 is isolated in a relatively sealed space after generating an electromagnetic field, achieving the effect of electromagnetic shielding. The insulating layer 31 is used to insulate the positive electrode pin 11 and the negative electrode pin 12 from each other, preventing the positive electrode pin 11 and the negative electrode pin 12 from forming a conductive connection through the shielding cover 3.

[0041] In one embodiment, referring to Figure 3 and Figure 4 , the first shielding layer 32 is made of a conductive metal material. The first shielding layer 32 includes a positive electrode welding portion 321 welded to the positive electrode pin 11, a negative electrode welding portion 322 welded to the negative electrode pin 12, and an edge welding portion 323 welded to the shielding housing 2. The edge welding portion 323 wraps around the outer periphery of the positive electrode welding portion 321 and the negative electrode welding portion 322. A first insulating ring 324 is provided between the positive electrode welding portion 321 and the edge welding portion 323.

[0042] As an example, the first shielding layer 32 is made of conductive metal, which can be welded and has electromagnetic shielding performance at the same time. The first shielding layer 32 includes a positive electrode welding portion 321, a negative electrode welding portion 322, and an edge welding portion 323. Among them, the positive electrode welding portion 321 is disposed around the first through hole 301. After the positive electrode welding portion 321 is welded to the positive electrode pin 11, a first welding portion 41 is formed around the first through hole 301, and the first welding portion 41 seals the gap between the first through hole 301 and the positive electrode pin 11; the negative electrode welding portion 322 is disposed around the second through hole 302. After the negative electrode welding portion 322 is welded to the negative electrode pin 12, a second welding portion 42 is formed around the first through hole 301, and the second welding portion 42 seals the gap between the second through hole 302 and the negative electrode pin 12; thus, the connection and fixation of the shielding cover 3 and the body 1 are realized, and the sealing effect and electromagnetic shielding effect of the two through holes are improved. In addition, the edge welding portion 323 is disposed in a region outside the positive electrode welding portion 321 and the negative electrode welding portion 322. The inner edge of the shielding housing 2 is welded to the edge welding portion 323 to form a sealed third welding portion 43 in a circle, which can not only realize the fixation of the shielding cover 3 and the shielding housing 2, but also realize the sealing between the shielding cover 3 and the shielding housing 2 to form a relatively sealed metal electromagnetic shielding structure, limit the electromagnetic field within the internal region of the electromagnetic shielding structure, and improve the sealing effect and electromagnetic shielding effect.

[0043] In this embodiment, the edge welding portion 323 is connected to the negative electrode welding portion 322 integrally. Since the edge welding portion 323 is welded to the shielding housing 2, the shielding housing 2 is connected and conducted to the negative electrode pin 12 of the body 1. Under the action of the electric field, induced charges are generated on the metal shielding housing 2, and the induced charges on the shielding housing 2 can be conducted away through the edge welding portion 323, the negative electrode welding portion 322, and the negative electrode pin 12 in sequence, so as to keep the potential of the shielding housing 2 basically unchanged, so that there is no charge accumulation and electric field establishment on the shielding housing 2, and the risk of electromagnetic interference to the internal capacitor or the battery body 1 is reduced.

[0044] In addition, the first insulating ring 324 is a ring-shaped convex structure formed by the upward extension of the insulating layer 31 around the outer periphery of the positive electrode welding portion 321, and is used to wrap the positive electrode pin 11, the positive electrode welding portion 321, and the first welding portion 41 formed after welding, so as to avoid connection and conduction between it and the negative electrode pin 12 and maintain insulation between the positive electrode pin 11 and the negative electrode pin 12.

[0045] In one embodiment, the shielding cover 3 is made by PCB process.

[0046] As an example, the edge welding portion 323, the positive electrode welding portion 321, and the negative electrode welding portion 322 made of metal material are plated on the surface of the insulating layer 31 by PCB process, so that the shielding cover 3 is integrally formed.

[0047] In one embodiment, the positive electrode welding portion 321 is welded to the positive electrode pin 11 by soldering, the negative electrode welding portion 322 is welded to the negative electrode pin 12 by soldering, and the edge welding portion 323 is welded to the shielding housing 2 by soldering.

[0048] As an example, between the positive electrode welding portion 321 and the positive electrode pin 11, between the negative electrode welding portion 322 and the negative electrode pin 12, and between the edge welding portion 323 and the shielding housing 2, they are respectively welded by soldering to achieve connection and fixation, improving the electromagnetic shielding effect and sealing function.

[0049] Embodiment Two:

[0050] The difference between this embodiment and Embodiment One is as follows: Refer to Figure 5 and Figure 6 , a second insulating ring 325 is provided between the negative electrode welding portion 322 and the edge welding portion 323.

[0051] As an example, the second insulating ring 325 is an annular convex structure formed by the upward extension of the insulating layer 31 around the outer periphery of the negative electrode welding portion 322, and is used to wrap the negative electrode pin 12, the negative electrode welding portion 322, and the second welding portion 42 formed after welding, so as to prevent connection and conduction between it and the positive electrode pin 11, maintain insulation between the positive electrode pin 11 and the negative electrode pin 12, and form a double-layer protection for the positive and negative electrode pins.

[0052] Embodiment Three:

[0053] The difference between this embodiment and Embodiment One is as follows: Refer to Figure 7 , the shielding cover 3 further includes a second shielding layer 33 provided below the insulating layer 31.

[0054] As an example, by providing the second shielding layer 33 below the insulating layer 31, the shielding cover 3 has a double-layer shielding structure to improve the electromagnetic shielding effect.

[0055] In one embodiment, the second shielding layer 33 is provided with third insulating rings 331 respectively wrapping around the outer periphery of the first through hole 301 and the outer periphery of the second through hole 302.

[0056] As an example, the third insulating ring 331 is an annular convex structure formed by the downward extension of the insulating layer 31, respectively surrounding the outer peripheries of the positive electrode welding portion 321 and the negative electrode welding portion 322. By the third insulating ring 331, the positive electrode pin 11 and the negative electrode pin 12 are respectively wrapped to maintain insulation between the positive electrode pin 11 and the negative electrode pin 12.

[0057] Embodiment Four:

[0058] This embodiment is an integration and improvement based on Embodiment 2 and Embodiment 3. The difference between this embodiment and Embodiment 1 is as follows: Refer to Figure 8 , a second insulating ring 325 is provided between the negative electrode welding part 322 and the edge welding part 323. At the same time, the shielding cover 3 further includes a second shielding layer 33 provided below the insulating layer 31.

[0059] As an example, the shielding cover 3 forms a double-layer shielding structure through the first shielding layer 32 and the second shielding layer 33 to improve the electromagnetic shielding effect; at the same time, the first shielding layer 32 forms a double-layer insulation protection for the positive and negative electrode pins through the first insulating ring 324 and the second insulating ring 325; in addition, the second shielding layer 33 also forms a double-layer insulation protection for the positive and negative electrode pins through the third insulating ring 331, strengthening the safety of the body 1 with a battery or a capacitor or a supercapacitor as the electromagnetic shielding object.

[0060] For the embodiments of the present invention, it should also be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0061] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations on the present invention. The protection scope of the present invention should be subject to the protection scope of the claims. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An electromagnetic shielding structure applied to a battery, a capacitor or a supercapacitor, applied to a body (1) with the battery, the capacitor or the supercapacitor as the electromagnetic shielding object, the body (1) being provided with a positive electrode pin (11) and a negative electrode pin (12), characterized in that: The electromagnetic shielding structure comprises a shielding shell (2) and a shielding cover (3) covering the shielding shell (2); the shielding cover (3) is provided with a first through hole (301) and a second through hole (302); the body (1) is arranged in the shielding shell (2); the positive electrode pin (11) extends out of the electromagnetic shielding structure through the first through hole (301); the negative electrode pin (12) extends out of the electromagnetic shielding structure through the second through hole (302); the shielding shell (2) is made of conductive metal; the shielding cover (3) comprises an insulating layer (31) and a first shielding layer (32) arranged on the insulating layer (31); The insulating layer (31) is used to achieve insulation between the positive electrode pin (11) and the negative electrode pin (12); the first shielding layer (32) is made of a conductive metal material, and the first shielding layer (32) comprises a positive electrode welding portion (321) welded to the positive electrode pin (11), a negative electrode welding portion (322) welded to the negative electrode pin (12), and an edge welding portion (323) welded to the shielding shell (2); the edge welding portion (323) is wrapped around the outer periphery of the positive electrode welding portion (321) and the negative electrode welding portion (322), and a first insulating ring (324) is provided between the positive electrode welding portion (321) and the edge welding portion (323).

2. The electromagnetic shielding structure according to claim 1, characterized in that: The shielding shell (2) is rolled to seal the shielding cover (3).

3. The electromagnetic shielding structure according to claim 1, characterized in that: A second insulating ring (325) is provided between the negative electrode welding portion (322) and the edge welding portion (323).

4. The electromagnetic shielding structure according to claim 1 or 3, characterized in that: The shielding cover (3) further comprises a second shielding layer (33) arranged below the insulating layer (31).

5. The electromagnetic shielding structure according to claim 4, characterized in that: The second shielding layer (33) is provided with a third insulating ring (331) respectively wrapped around the outer periphery of the first through hole (301) and the outer periphery of the second through hole (302).

6. The electromagnetic shielding structure according to claim 5, characterized in that: The shielding cover (3) is manufactured through a PCB process.

7. The electromagnetic shielding structure according to claim 1, characterized in that: The positive electrode welding portion (321) is welded to the positive electrode pin (11) by soldering, the negative electrode welding portion (322) is welded to the negative electrode pin (12) by soldering, and the edge welding portion (323) is welded to the shielding shell (2) by soldering.

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