CN218101463U - Steel-shell battery and electronic equipment - Google Patents

Abstract

The utility model discloses a steel shell battery, steel shell battery include steel shell, electric core, anodal post and insulating part, and the steel shell has and holds the chamber, and electric core is installed in holding the intracavity, and the steel shell includes along relative roof of thickness direction and bottom plate, and the surface of roof or the surface of bottom plate are equipped with the holding tank, and the anodal post is fixed to be set up on the steel shell, and the anodal post includes protrusion in the portion of feedthrough of steel shell surface and is located the connecting portion that hold the intracavity, the portion of feedthrough set up in just extend along the depth direction of holding tank in the holding tank, the degree of depth of dimension less than or equal to holding tank of the portion of feedthrough in the depth direction of holding tank, connecting portion are connected with the positive ear electricity on the electric core, and the insulating part clamp is located between anodal post and the steel shell to anodal post and steel shell are spaced apart. The utility model provides a steel-shelled battery has the littleer advantage that its thickness can design.

Description

Steel-shell battery and electronic equipment

Technical Field

The utility model relates to a box hat battery technical field, concretely relates to box hat battery and electronic equipment.

Background

The steel shell battery has the characteristics of small dimensional tolerance, thin thickness, no folded edge and the like, shows great advantages in energy density, and is a development direction with great prospect in the future. However, the steel-can battery in the related art requires some insulation protection of its positive electrode by some feedthroughs because of its conductive characteristics, and the size of the feedthroughs results in that the thickness of the steel-can battery cannot be designed smaller.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

To this end, embodiments of the present invention provide a steel-shelled battery having the advantage that its thickness can be designed to be smaller.

The embodiment of the utility model provides an embodiment still provides an electronic equipment.

The steel shell battery comprises a steel shell, an electric core, a positive pole and an insulating piece, wherein the steel shell is provided with a containing cavity, the electric core is installed in the containing cavity, the steel shell comprises a top plate and a bottom plate which are opposite in the thickness direction, and the outer surface of the top plate or the outer surface of the bottom plate is provided with a containing groove; the positive pole is fixedly arranged on the steel shell and comprises a feed-through part protruding out of the outer surface of the steel shell and a connecting part positioned in the accommodating cavity, the feed-through part is arranged in the accommodating groove and extends along the depth direction of the accommodating groove, the size of the feed-through part in the depth direction of the accommodating groove is smaller than or equal to the depth of the accommodating groove, and the connecting part is electrically connected with a positive lug on the battery cell; the insulating piece clamp is located between positive post and the steel-shelled turtle, so that positive post with the steel-shelled turtle is spaced apart.

According to the utility model discloses the box hat battery, the extending direction of feedthrough portion is unanimous with the depth direction of holding tank, from this, the maximum cross section size of anodal post no longer causes the influence to the thickness of box hat, the thickness of box hat need not be greater than the maximum cross section size of anodal post with designing promptly, and, the portion of exposing that sets up the anodal post is hidden in the holding tank, the dimension less than or equal to the degree of depth of holding tank of feedthrough portion in the depth direction of holding tank promptly, and then the thickness of feedthrough portion also can not cause the influence to the thickness of box hat, the thickness of box hat can design ground littleer.

In some embodiments, the depth direction of the accommodating groove is consistent with the thickness direction of the steel shell, and the dimension of the feedthrough part along the thickness direction of the steel shell is smaller than the depth of the accommodating groove.

In some embodiments, the accommodating groove is arranged at a corner of the steel shell, and the accommodating groove is communicated with two connected side surfaces.

In some embodiments, the steel-shell battery further comprises an adaptor, the adaptor is located in the accommodating cavity, a first end of the adaptor is electrically connected with the positive lug, and a second end of the adaptor is electrically connected with the connecting part.

In some embodiments, the adaptor comprises a conducting strip and an insulating layer covering the conducting strip, the insulating layer is provided with a first opening communicating the conducting strip with the outside, and the positive lug penetrates through the first opening and is welded with the conducting strip.

In some embodiments, the connection passes through the insulating layer and is riveted to the conductive sheet.

In some embodiments, the electrically conductive sheet comprises an aluminum sheet.

In some embodiments, a portion of the top plate or the bottom plate constituting the bottom surface of the receiving groove is provided with a second opening communicating the receiving cavity with the outside, the positive post further includes a shaft portion connecting the feed-through portion and the connecting portion, the cross-sectional area of the feed-through portion and the connecting portion is larger than the cross-sectional area of the second opening and the shaft portion, and the shaft portion is fitted in the second opening.

In some embodiments, the insulating member includes an insulating pad, the insulating pad is located in the accommodating cavity and sleeved on the shaft portion, and the insulating pad is sandwiched between the connecting portion and the top plate or the bottom plate provided with the accommodating cavity.

In some embodiments, the insulating member further includes a sealing ring, the sealing ring is sleeved on the shaft portion, at least a portion of the sealing ring is fitted in the second opening and sandwiched between an outer circumferential surface of the shaft portion and an inner circumferential surface of the second opening, and the rest portion of the sealing ring is located in the accommodating groove and sandwiched between the feedthrough portion and the top plate or the bottom plate provided with the accommodating groove.

The electronic equipment according to the embodiment of the present invention includes the steel-shelled battery according to any one of the above embodiments.

According to the utility model discloses electronic equipment's technical advantage is the same with the technical advantage of the box hat battery in the above-mentioned embodiment, and this is no longer described herein.

Drawings

Fig. 1 is a schematic diagram of a steel-shelled battery according to an embodiment of the invention.

Fig. 2 is another schematic diagram of a steel can battery according to an embodiment of the invention.

Fig. 3 is a schematic diagram of an adapter for a steel-shelled battery according to an embodiment of the invention.

Fig. 4 is yet another schematic diagram of a steel can battery according to an embodiment of the invention.

Reference numerals are as follows: 1. a steel shell; 11. an accommodating chamber; 2. a positive post; 21. a feed-through section; 22. a connecting portion; 23. a shaft portion; 3. an insulating member; 31. an insulating pad; 32. a seal ring; 4. accommodating grooves; 5. an electric core; 51. a positive tab; 6. an adapter; 61. a conductive sheet; 62. an insulating layer; 63. a first opening.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

In the related art, the feedthrough structure is usually inserted into the peripheral wall of the steel can cell, and the thickness direction/axial direction of the feedthrough structure is parallel to the plane of the steel can cell, so that the thickness of the steel can cell is often limited by the width/radial dimension of the feedthrough structure.

A steel-shelled battery according to an embodiment of the invention is described below with reference to fig. 1-4.

As shown in fig. 4 and fig. 2, according to the utility model discloses steel-shelled battery includes steel-shelled 1, electric core 5, positive post 2 and insulating part 3, and steel-shelled 1 has and holds chamber 11, and electric core 5 installs in holding chamber 11, and steel-shelled 1 includes along relative roof of thickness direction and bottom plate, and the surface of roof or the surface of bottom plate are equipped with holding tank 4. The positive pole 2 is fixedly arranged on the steel shell 1, the positive pole 2 comprises a feed-through part 21 protruding out of the outer surface of the steel shell 1 and a connecting part 22 located in the accommodating cavity 11, the feed-through part 21 is arranged in the accommodating groove 4 and extends along the depth direction of the accommodating groove 4, the size of the feed-through part 21 in the depth direction of the accommodating groove 4 is smaller than or equal to the depth of the accommodating groove 4, and the connecting part 22 is electrically connected with a positive lug 51 on the battery cell 5; the insulating piece 3 is clamped between the positive pole column 2 and the steel shell 1 so that the positive pole column 2 and the steel shell 1 are spaced apart.

According to the utility model discloses the box hat battery, the extending direction of feedthrough portion 21 is unanimous with the depth direction of holding tank 4, from this, the maximum cross sectional dimension of anodal post 2 no longer causes the influence to the thickness of box hat 1, the thickness of box hat 1 does not need to design ground promptly to be greater than the maximum cross sectional dimension of anodal post 2, and, the portion 21 that exposes that sets up anodal post 2 hides in holding tank 4, the dimension less than or equal to holding tank 4's of feedthrough portion 21 at the depth direction of holding tank 4 degree of depth promptly, and then the thickness of feedthrough portion 21 also can not cause the influence to the thickness of box hat 1, the thickness of box hat 1 can design ground littleer.

Wherein, insulator 3 has avoided the direct contact of positive post 2 and steel-shelled 1 to the emergence of short circuit phenomenon between positive post 2 and the steel-shelled 1 has been avoided.

Specifically, the cross-sectional shape of the positive post 2 may be a circle, where the maximum cross-sectional dimension of the positive post 2 refers to the maximum diameter thereof, or the cross-sectional shape of the positive post 2 may also be a rectangle, an ellipse, or the like, which is not limited in this embodiment.

Specifically, in the present embodiment, the thickness of the steel-shelled battery is less than 3.5mm.

Specifically, the feedthrough 21 is used to connect the steel can battery with external equipment/external circuitry.

For ease of understanding, the arrow a in fig. 2 indicates the thickness direction of the steel can cell.

In some embodiments, as shown in fig. 2, the depth direction of the receiving groove 4 is the same as the thickness direction of the steel shell 1, and the dimension of the feedthrough 21 in the thickness direction of the steel shell 1 is smaller than the depth of the receiving groove 4.

Thus, the positive post 2/feedthrough 21 extends in the thickness direction of the steel can 1, and the cross section of the feedthrough 21 is perpendicular to the thickness direction of the steel can battery. Thereby, the size of the cross-sectional dimension of the feedthrough 21 does not interfere with the design of the thickness of the steel shell 1, so that, in the present embodiment, the design thickness of the steel shell 1 can be further reduced.

In addition, the feedthrough 21 of the present embodiment can be designed to be flat and thick for being accommodated in the accommodating groove 4. Therefore, the feed-through part 21 is prevented from protruding out of the accommodating groove 4, and the appearance attractiveness of the steel shell battery is enhanced.

In some embodiments, as shown in fig. 1, the accommodating groove 4 is disposed at a corner of the steel shell 1, and the accommodating groove 4 is communicated with two connected side surfaces.

From this, holding tank 4 locates the corner of box hat 1, has realized its mounting position with electric core 5 spaced apart, has avoided both to interfere mutually. In addition, the space utilization rate of the steel shell battery is improved due to the position design of the accommodating groove 4, and therefore the design size of the steel shell battery can be reduced.

Specifically, as shown in fig. 1 and 2, the accommodation groove 4 is provided on the top plate of the steel shell 1.

In some embodiments, as shown in fig. 1, the steel-shelled battery further includes an adaptor 6, the adaptor 6 is located in the accommodating cavity 11, a first end of the adaptor 6 is electrically connected to the positive tab 51, and a second end of the adaptor 6 is electrically connected to the connecting portion 22.

Therefore, the connecting part 22 and the positive lug 51 which are spaced from each other can realize the transmission of electric signals through the adaptor 6, and the reliability of the electric signal transmission of the steel shell battery is ensured.

In some embodiments, as shown in fig. 3, the adaptor 6 includes a conductive sheet 61 and an insulating layer 62 covering the conductive sheet 61, the insulating layer 62 is provided with a first opening 63 communicating the conductive sheet 61 with the outside, and the positive tab 51 passes through the first opening 63 and is welded to the conductive sheet 61.

Therefore, the adaptor 6 not only realizes the effect of electric connection with the positive lug 51 through the conducting sheet 61, but also realizes the insulating effect of the conducting sheet 61 through the insulating layer 62, and the short circuit caused by the contact between the conducting sheet 61 and the steel shell 1 is avoided.

It will be appreciated that first opening 63 is adapted to positive tab 51.

In some embodiments, the connection portion 22 passes through the insulating layer 62 and is riveted to the conductive sheet 61.

Thereby, an effect of electrical connection of the connection portion 22 and the adaptor 6 is achieved.

In some embodiments, the conductive sheet 61 comprises an aluminum sheet.

The aluminum sheet has the advantages of good conductivity, light weight, abundant resources and low price. Therefore, the aluminum sheet is selected as the conductor material/conducting sheet 61, so that the weight of the steel shell battery can be reduced, and the material cost of the steel shell battery is reduced.

In some embodiments, as shown in fig. 4, the top plate or the bottom plate of the steel can 1, which forms the bottom surface of the accommodating groove 4, is provided with a second opening communicating the accommodating cavity 11 with the outside, and the positive post 2 further includes a shaft portion 23 connecting the feed-through portion 21 and the connecting portion 22, the cross-sectional areas of the feed-through portion 21 and the connecting portion 22 are larger than the cross-sectional areas of the second opening and the shaft portion 23, and the shaft portion 23 is fitted in the second opening.

Therefore, the second opening realizes the limiting effect on the feed-through part 21 and the connecting part 22, and the positive pole column 2 is prevented from being separated from the second opening.

Specifically, when the accommodating groove 4 is disposed on the top plate, the second opening is disposed on the top plate.

In some embodiments, as shown in fig. 4, the insulating member 3 includes an insulating pad 31, the insulating pad 31 is located in the accommodating cavity 11 and is sleeved on the shaft portion 23, and the insulating pad 31 is sandwiched between the connecting portion 22 and the top plate or the bottom plate provided with the accommodating cavity 4.

From this, when accommodation groove 4 sets up in the roof, connecting portion 22 and roof have realized the spacing effect to insulating pad 31, have strengthened the fixed effect of insulating pad 31. In addition, the insulating effect of positive post 2 has been guaranteed to the design form of insulating pad 31, has guaranteed electric signal transmission's reliability and security among the steel-shelled battery.

In some embodiments, as shown in fig. 4, the insulating member 3 further includes a sealing ring 32, the sealing ring 32 is sleeved on the shaft portion 23, at least a portion of the sealing ring 32 is fitted in the second opening and interposed between an outer circumferential surface of the shaft portion 23 and an inner circumferential surface of the second opening, and the rest of the sealing ring 32 is located in the accommodating groove 4 and interposed between the feedthrough portion 21 and the top or bottom plate provided with the accommodating groove 4.

The seal ring 32 is used to ensure the insulation effect between the shaft portion 23 and the feedthrough portion 21, thereby preventing a short circuit.

The insulating gasket 31 is fitted around the outer peripheral surface of the portion of the sealing ring 32 fitted in the second opening.

To sum up, the embodiment of the utility model provides an in the steel-shelled battery when guaranteeing its energy density, can realize ultra-thin design.

The electronic equipment according to the embodiment of the present invention includes the steel-shelled battery as in any of the above embodiments.

According to the utility model discloses electronic equipment's technical advantage is the same with the technical advantage of the box hat battery of above-mentioned embodiment, and this is no longer described herein.

Specifically, the electronic device may be a mobile phone, a tablet, a notebook, or the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.

Claims (11)

1. A steel can battery, comprising:

the battery comprises a steel shell and a battery cell, wherein the steel shell is provided with an accommodating cavity, the battery cell is installed in the accommodating cavity, the steel shell comprises a top plate and a bottom plate which are opposite to each other in the thickness direction, and an accommodating groove is formed in the outer surface of the top plate or the outer surface of the bottom plate;

the positive pole is fixedly arranged on the steel shell and comprises a feed-through part protruding out of the outer surface of the steel shell and a connecting part positioned in the accommodating cavity, the feed-through part is arranged in the accommodating groove and extends along the depth direction of the accommodating groove, the size of the feed-through part in the depth direction of the accommodating groove is smaller than or equal to the depth of the accommodating groove, and the connecting part is electrically connected with a positive lug on the battery cell; and

and the insulating piece is clamped between the positive pole and the steel shell, so that the positive pole and the steel shell are spaced apart.

2. The steel-shelled battery according to claim 1, wherein the depth direction of the accommodating groove is consistent with the thickness direction of the steel shell, and the dimension of the feedthrough in the thickness direction of the steel shell is smaller than the depth of the accommodating groove.

3. The steel-shelled battery according to claim 2, wherein the receiving groove is arranged at a corner of the steel shell and is communicated with two connected side surfaces.

4. The steel-shelled battery according to claim 1, further comprising an adaptor located within the receiving cavity, a first end of the adaptor being electrically connected to the positive tab, and a second end of the adaptor being electrically connected to the connecting portion.

5. The steel-shell battery of claim 4, wherein the adaptor comprises a conducting strip and an insulating layer coating the conducting strip, the insulating layer is provided with a first opening communicating the conducting strip with the outside, and the positive tab penetrates through the first opening and is welded with the conducting strip.

6. The steel can battery of claim 5, wherein the connection passes through the insulating layer and is riveted to the conductive tab.

7. The steel-shelled battery according to claim 5, characterized in that the conductive sheet comprises an aluminum sheet.

8. The steel-shelled battery according to any one of claims 1 to 7, wherein a portion of the top plate or the bottom plate constituting the bottom surface of the accommodation groove is provided with a second opening communicating the accommodation cavity with the outside, and the positive post further comprises a shaft portion connecting the feedthrough portion and the connection portion, the feedthrough portion and the connection portion having a cross-sectional area larger than that of the second opening and the shaft portion, the shaft portion fitting in the second opening.

9. The steel-shelled battery according to claim 8, wherein the insulating member comprises an insulating pad, the insulating pad is located in the accommodating cavity and sleeved on the shaft portion, and the insulating pad is sandwiched between the connecting portion and the top plate or the bottom plate provided with the accommodating groove.

10. The steel-shelled battery according to claim 9, characterized in that the insulator further comprises a sealing ring, the sealing ring is sleeved on the shaft portion, at least part of the sealing ring is fitted in the second opening and sandwiched between an outer circumferential surface of the shaft portion and an inner circumferential surface of the second opening, and the rest of the sealing ring is located in the accommodating groove and sandwiched between the feedthrough and a top plate or a bottom plate provided with the accommodating groove.

11. An electronic device comprising a steel can battery as defined in any one of claims 1-10.

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