CN218919091U - Battery and electronic device - Google Patents

Abstract

The utility model discloses a battery and an electronic device, wherein the battery comprises a steel shell, and the steel shell is provided with an accommodating space; the top cover is arranged at the top of the accommodating space and comprises a cover body, a pole and a steel hoop, wherein the cover body, the pole and the steel hoop are integrated, the cover body is a plastic part, the steel hoop is arranged at one side of the top cover facing the steel shell and is connected with the steel shell, and the steel hoop is used for fixing the top cover and the steel shell; and the battery cell is arranged in the accommodating space, and the lug of the battery cell is connected with the pole. According to the battery, the steel hoop is arranged on one side of the top cover facing the steel shell and is connected with the steel shell, and the steel hoop is used for fixing the top cover and the steel shell, so that the connection of the top cover and the steel shell is realized, the battery core is sealed in the steel shell, the tightness of the battery is ensured, and the cover body, the pole post and the steel hoop in the battery are integrated, so that the assembly process of the battery is simple, and the assembly efficiency is high.

Description

Battery and electronic device

Technical Field

The present disclosure relates to battery technology, and more particularly, to a battery and an electronic device.

Background

The power supply requirements of consumer electronics are rapidly evolving towards both miniature and high capacity batteries. In prior art, top cap and the utmost point post of battery are the metalwork, set up insulating diaphragm in order to guarantee the security of battery between top cap and utmost point post generally, because the assembly process between top cap, insulating diaphragm and the utmost point post is comparatively loaded down with trivial details complicacy, and the degree of difficulty is higher, leads to the assembly efficiency of battery lower.

Disclosure of Invention

The utility model provides a battery, wherein a cover body, a pole and a steel hoop in the battery are integrated, so that the battery is simple in assembly process and high in assembly efficiency.

The utility model also provides an electronic device comprising the battery.

A battery according to an embodiment of the present utility model includes: the steel shell is provided with an accommodating space; the top cover is arranged at the top of the accommodating space and comprises a cover body, a pole and a steel hoop, wherein the cover body, the pole and the steel hoop are integrated, the cover body is a plastic piece, the steel hoop is arranged at one side of the top cover facing the steel shell and is connected with the steel shell, and the steel hoop is used for fixing the top cover and the steel shell; the battery cell is arranged in the accommodating space, and the tab of the battery cell is connected with the pole column in a welding way.

According to the battery provided by the embodiment of the utility model, the steel shell is provided with the accommodating space, the top cover is arranged at the top of the steel shell and comprises the cover body, the pole and the steel hoop, the cover body is a plastic piece, the steel hoop is arranged at one side of the top cover facing the steel shell and is connected with the steel shell, and the steel hoop is used for fixing the top cover and the steel shell, so that the connection of the top cover and the steel shell is realized to seal the battery cell in the steel shell, the tightness of the battery is ensured, and the cover body, the pole and the steel hoop in the battery are integrated, so that the assembly process of the battery is simple and the assembly efficiency is high.

In some embodiments of the utility model, the steel band is in the shape of a ring extending in the circumferential direction of the cap body.

In some embodiments of the present utility model, the cap body has a blast hole thereon, and the top cap further includes: the explosion-proof membrane is arranged at the explosion-proof hole, and the steel hoop, the cover body, the pole and the explosion-proof membrane are injection-molded integrated parts.

In some embodiments of the present utility model, the top cover is further provided with a liquid injection hole and a sealing plug, and the sealing plug is arranged at the liquid injection hole; the liquid injection hole is used for injecting electrolyte into the accommodating space, and the sealing plug is used for sealing the liquid injection hole.

In some embodiments of the utility model, the sealing plug comprises: the threaded fastener is in threaded connection with the liquid injection hole; the rubber plug is connected with one side, facing the inside of the steel shell, of the threaded fastener, and the rubber plug is used for plugging the liquid injection hole.

In some embodiments of the utility model, the tab includes a positive tab and a negative tab, the positive tab is led out from the upper side of the cell and connected to the positive tab, and the negative tab is led out from the upper side of the cell and connected to the negative tab.

In some embodiments of the present utility model, the tab includes a positive tab, the positive tab is led out from an upper side of the cell and is welded to the positive tab, and the negative tab of the cell is led out from a lower side of the cell and is welded to a bottom of the steel can.

In some embodiments of the utility model, the battery further comprises: the first insulating piece is arranged between the top cover and the battery cell, and the positive electrode lug penetrates through the first insulating piece to be connected with the positive electrode post.

In some embodiments of the utility model, the battery further comprises: the second insulating piece is arranged between the bottom wall of the steel shell and the battery cell, and the second insulating piece is provided with a first through hole and a second through hole, wherein the first through hole is used for the negative electrode lug of the battery cell to penetrate through, and the second through hole is used for welding a welding needle.

In some embodiments of the utility model, the battery further comprises: and a liner on which the battery cells are wound, the liner having a through hole penetrating in a top-to-bottom direction of the battery.

In some embodiments of the present utility model, a support member is disposed in the through hole, and the support member is connected to two opposite wall surfaces of the through hole.

In some embodiments of the utility model, the outer profile of the cross section of the steel shell is rounded rectangle.

The electronic device comprises the battery.

According to the electronic device provided by the embodiment of the utility model, the battery is arranged, the steel shell is provided with the accommodating space, the top cover is arranged at the top of the steel shell, the top cover comprises the cover body, the pole and the steel hoop, the cover body is a plastic part, the steel hoop is arranged at one side of the top cover facing the steel shell and is connected with the steel shell, the steel hoop is used for fixing the top cover and the steel shell, so that the connection of the top cover and the steel shell is realized to seal the battery cell in the steel shell, the tightness of the battery is ensured, and the cover body, the pole and the steel hoop in the battery are integrated, so that the assembly process of the battery is simple, and the assembly efficiency is high.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a perspective view of a battery according to some embodiments of the present utility model;

fig. 2 is a perspective view of a battery according to other embodiments of the present utility model;

fig. 3 is an exploded view of a battery according to some embodiments of the present utility model;

FIG. 4 is a perspective view of a top cover according to some embodiments of the present utility model;

FIG. 5 is a top view of a top cover according to further embodiments of the present utility model;

FIG. 6 isbase:Sub>A cross-sectional view taken along line A-A in FIG. 5;

figure 7 is a perspective view of a sealing plug according to some embodiments of the present utility model;

FIG. 8 is a perspective view of a liner according to some embodiments of the utility model;

fig. 9 is a bottom view of a cell and liner according to some embodiments of the utility model.

Reference numerals:

100. a battery;

1. a steel shell;

2. a top cover; 21. a cover body; 211. explosion-proof holes; 22. a pole; 221. a positive electrode post; 222. a negative electrode column; 23. a steel hoop; 24. an explosion-proof membrane; 25. a liquid injection hole; 251. a first hole; 252. a second hole;

3. a battery cell;

4. a sealing plug; 41. a threaded fastener; 42. a rubber plug;

5. a first insulating sheet; 51. a third through hole;

6. a second insulating sheet; 61. a first through hole; 62. a second through hole;

7. a lining; 71. a through hole; 72. and a support.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A battery 100 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 2 to 4, a battery 100 according to one embodiment of the present utility model includes a steel case 1, a top cover 2, and a battery cell 3.

Wherein, steel shell 1 is equipped with the accommodation space, and accommodation space's top is located to top cap 2, and top cap 2 includes lid body 21, utmost point post 22 and steel hoop 23, and lid body 21, utmost point post 22 and steel hoop 2 are an organic whole piece, and lid body 21 is the working of plastics, and steel hoop 23 locates the one side of top cap 2 towards steel shell 1 and is connected with steel shell 1, and steel hoop 23 is used for fixing top cap 2 and steel shell 1, and in steel shell 1 was located to electric core 3, electric core 3's utmost point ear and utmost point post 22 welded connection.

It can be understood that in the process of welding the tab and the pole 22 through the connector, the top cover 2 is a plastic part except the pole 22 and the steel hoop 23, so that the welding difficulty between the tab and the pole 22 is reduced, the yield of the battery 100 is further improved, the injection-molded top cover 2 plays a role in insulation protection while ensuring that the top cover 2 of the battery 100 is conductive, the reliability of the battery 100 is improved, and the weight of the top cover 2 is reduced. Meanwhile, the cover body 21, the pole column 22 and the steel hoop 23 are integrated, so that parts are reduced, the whole assembly process is simplified, the assembly efficiency is improved, the cost is reduced, the air tightness of the battery 100 after the connection of the top cover 2 and the steel shell 1 is ensured by the arrangement of the integrated part of the top cover 2, the rubber sealing ring for sealing the battery in the prior art is reduced, and the assembly efficiency is further improved.

After the welding connection of the lugs of the battery cell 3 and the pole posts 22 is completed, the battery cell 3 is placed in the steel shell 1, and the connection of the top cover 2 and the steel shell 1 is realized by connecting the steel hoop 23 with the steel shell 1 so as to seal the battery cell 3 in the steel shell 1, thereby realizing the assembly of the battery 100. Further, a rolling groove recessed toward the inner side of the steel shell 1 is formed in the outer peripheral wall of the top of the steel shell 1, and the steel hoop 23 is welded with the rolling groove, so that the connection strength between the steel hoop 23 and the steel shell 1 is enhanced, and the connection reliability between the top cover 2 and the steel shell 1 is enhanced.

Further, the cover body 21 is made of an insulating plastic material such as PP (Polypropylene), PE (Polyethylene), PVC (Polyvinyl Chloride ), PS (Polystyrene), or PET (Polyethylene Glycol Terephthalate, polyethylene terephthalate). Meanwhile, the main body of the steel shell 1 is formed by stamping and stretching.

The manufacturing process of the battery 100 of the present application includes the steps of:

(1) Forming the cap body 21, the pole 22 and the steel hoop 23 into a top cap 2 through an injection molding process;

(2) And die cutting and shaping the electrode lugs. The pole lug die cutting is that the winding core adopts pre-die cutting winding, or the whole pole lug is directly wound and then die-cut. The tab shaping is performed in a tab die cutting preceding procedure or a tab die cutting subsequent procedure;

(3) The tab is welded with the pole 22;

(4) The battery cell 3 is arranged in the steel shell 1;

(5) The connection between the top cover 2 and the steel shell 1 is realized by connecting the steel hoop 23 with the steel shell 1;

(6) The top cover 2 is sealed.

Because, this application is connected steel hoop 23 and steel casing 1 again after the utmost point ear of electric core 3 and utmost point post 22 welded connection is accomplished to realize open welding at utmost point ear and utmost point post 22 welded connection's in-process, and then avoid blind welding to influence the welding strength between utmost point ear and the utmost point post 22 and the yields of battery 100, especially to the full utmost point ear battery of using this top cap 2, can realize that every utmost point ear of electric core 3 all welds in place.

The manufacturing process of the battery 100 of the present application is applicable to a micro battery, a large-capacity battery, or the like.

According to the battery 100 of the embodiment of the utility model, the steel shell 1 is provided with the accommodating space, the top cover 2 is arranged at the top of the steel shell 1, the top cover 2 comprises the cover body 21, the pole 22 and the steel hoop 23, the cover body 21 is a plastic piece, the steel hoop 23 is arranged at one side of the top cover 2 facing the steel shell 1 and is connected with the steel shell 1, the steel hoop 23 is used for fixing the top cover 2 and the steel shell 1, so that the connection of the top cover 2 and the steel shell 1 is realized to seal the battery cell 3 in the steel shell 1, and the cover body 21, the pole 22 and the steel hoop 23 are integrated, so that the assembly process of the battery 100 is simple and the assembly efficiency is high.

In some embodiments of the present utility model, as shown in fig. 2 to 4, the shape of the steel hoop 23 is a ring shape extending in the circumferential direction of the cover body 21. Thus, by such arrangement, the connection reliability of the top cover 2 and the steel case 1 is further ensured, the sealability of the battery 100 is ensured, and the versatility of the battery 100 is improved.

In some embodiments of the utility model, as shown in fig. 1 and 5, the top cover 2 further comprises a rupture membrane 24 ". Wherein, the cover body 21 is provided with an explosion-proof hole 211, the explosion-proof film 24 is arranged at the explosion-proof hole 211, and the steel hoop 23, the cover body 21, the pole 22 and the explosion-proof film 24 are injection molded. It can be appreciated that the safety of the battery 100 using the top cover 2 is further improved by arranging the explosion-proof membrane 24 at the explosion-proof hole 211, and meanwhile, the explosion-proof membrane 24 and the explosion-proof hole 211 are integrated, so that the air tightness of the battery 100 after the top cover 2 is connected with the steel shell 1 is ensured, the assembly process is simplified, the assembly efficiency is improved, and the cost is reduced. Meanwhile, the top cover 2 is formed into an integral piece through an injection molding process, so that the overall structural strength of the top cover 2 is improved, the top cover 2 plays a role in insulation protection while ensuring that the pole 22 is conductive, the reliability of the battery 100 is improved, and the weight of the top cover 2 is reduced.

In some embodiments of the present utility model, as shown in fig. 1 and fig. 5-7, the top cover 2 is further provided with a liquid injection hole 25 and a sealing plug 4, the sealing plug 4 is disposed at the liquid injection hole 25, the liquid injection hole 25 is used for injecting electrolyte into the accommodating space, and the sealing plug 4 is used for sealing the liquid injection hole 25. Therefore, electrolyte can be injected into the accommodating space through the liquid injection hole 25, and the liquid injection hole 25 is plugged through the sealing plug 4 after the liquid injection is completed, so that the leakage of the electrolyte is avoided, and the safety of the battery 100 is improved.

Further, the position of the liquid injection hole 25 on the top cover 2 is staggered from the position of the explosion proof hole 211, so that the risk of flowing into the explosion proof hole 211 when liquid is injected into the liquid injection hole 25 is avoided.

In some embodiments of the present utility model, as shown in fig. 7, the sealing plug 4 includes a threaded fastener 41 and a plug 42. Wherein, threaded fastener 41 and notes liquid hole 25 threaded connection, plug 42 is connected with the inside one side of threaded fastener 41 towards steel casing 1, and plug 42 is used for shutoff notes liquid hole 25. It can be appreciated that the sealing of the liquid injection hole 25 is realized by the cooperation of the rubber plug 42 and the inner peripheral wall of the liquid injection hole 25, so that the electrolyte is prevented from flowing out of the liquid injection hole 25. Because the battery 100 needs twice liquid injection, the sealing plug 4 is detachably connected with the liquid injection hole 25 through the matching of the threaded fastener 41 and the liquid injection hole 25, so that the sealing plug 4 is used for sealing the liquid injection hole 25 after the first liquid injection is completed, the sealing plug 4 is taken out during the second liquid injection, and the liquid injection hole 25 is sealed through the sealing plug 4 after the liquid injection is completed, so that flexible sealing is realized, the difficulty of multiple liquid injection of the battery 100 is reduced, and the reliability of the battery 100 is improved. Meanwhile, in the process of sealing the liquid injection hole 25 by the sealing plug 4 each time, the threaded fastener 41 is rotated to squeeze the rubber plug 42 to elastically deform, so that the tightness is further ensured.

Further, as shown in fig. 6, the liquid injection hole 25 includes a first hole 251 and a second hole 252 which are sequentially arranged and connected in the thickness direction of the cover body 21, the first hole 251 is located at one side of the second hole 252 near the inside of the steel shell 1, the cross-sectional area of the first hole 251 is smaller than that of the second hole 252, the threaded fastener 41 is in threaded connection with the second hole 252, and the rubber stopper 42 is provided in the first hole 251. By such arrangement, the first hole 251 covers the threaded fastener 41 in the thickness direction of the body 21 (the first direction as shown in fig. 6), so that the sealing plug 4 is prevented from falling into the steel can 1 during rotation of the threaded fastener 41, and the reliability of the battery 100 is improved. Meanwhile, the rubber plug 42 is attached to the wall of the first hole 251, and the threaded fastener 41 is in threaded connection with the second hole 252, so that tightness is further ensured.

In some embodiments of the present utility model, the threaded fastener 41 and the rubber plug 42 are formed into an integral piece through an injection molding process, thereby improving the overall structural strength of the sealing plug 4, ensuring the tightness of the sealing plug 4 for blocking the liquid injection hole 25, simplifying the whole assembly process, and improving the assembly efficiency.

In some embodiments of the present utility model, as shown in fig. 1, the tab 22 includes a positive tab 221 or a negative tab 222, and the tab 22 includes a positive tab and a negative tab, the positive tab being led out from the upper side of the cell 3 and connected to the positive tab 221, and the negative tab being led out from the upper side of the cell and connected to the negative tab. Thereby, the battery 100 demand that the positive electrode post 221 and the negative electrode post 222 are drawn from one side is satisfied. Specifically, during the assembly process of the battery 100, the positive tab is welded with the positive post 221, the negative tab is welded with the negative post 222, so that the positive post 221 and the negative post 222 are led out from one side of the top cover 2, and then the top cover 2 is connected with the steel shell 1 through the steel hoop 23 to realize the connection of the top cover 2 and the steel shell 1 so as to seal the battery cell 3 in the steel shell 1, thereby realizing the assembly of the battery 100.

In some embodiments of the present utility model, as shown in fig. 2, the tab 22 includes a positive tab 221, and the tab 22 includes a positive tab and a negative tab, where the positive tab is led out from the upper side of the cell 3 and is welded to the positive tab 221, and the negative tab of the cell 3 is led out from the lower side of the cell 3 and is welded to the bottom of the steel can 1. Thus, the battery 100 requirements of the positive electrode post 221 and the negative electrode post 222 drawn from both sides are satisfied, and it is to be noted that the bottom of the steel can 1 welded to the negative electrode tab serves as the negative electrode post 222. Specifically, during the assembly process of the battery 100, the positive tab led out from the upper side of the battery cell 3 is welded with the positive post 221, the negative tab 222 led out from the lower side of the battery cell 3 is welded with the bottom of the steel can 1, so as to lead out the positive post 221 and the negative post 222 from both sides of the battery 100, and then the steel hoop 23 is connected with the steel can 1 to connect the top cover 2 with the steel can 1 so as to seal the battery cell 3 in the steel can 1, thereby realizing the assembly of the battery 100.

For example, in one embodiment of the present application, the length of the battery cell 3 is within 20mm, the width is within 10mm, and the thickness is within 5mm, and because the volume of the battery cell 3 is smaller, the explosion-proof hole 211 and the liquid injection hole 25 are omitted from the top cover 2, and the cover body 21, the negative pole column 222 and the steel hoop 23 are formed into an integral piece through an injection molding process, so that a highly compact design of the top cover 2 is realized, and the battery cell 3 with a smaller volume is assembled to form a miniature battery.

In some embodiments of the present utility model, as shown in fig. 3, the battery 100 further includes a first insulating sheet 5. The first insulating sheet 5 is disposed between the top cover 2 and the battery cell 3, and the positive tab of the battery cell 3 passes through the first insulating sheet 5 and is connected with the positive post 221. From this, the positive electrode lug of electric core 3 wears to locate first insulating piece 5 and positive electrode lug welded connection, guarantees insulating between positive electrode lug and the electric core 3 through the setting of first insulating piece 5 to avoid the short circuit between positive electrode lug and the steel casing 1, thereby avoid battery 100 short circuit, guarantee the safety of battery 100. Meanwhile, the arrangement of the first insulating sheet 5 limits the displacement of the battery cell 3 within the battery 100 in the direction from the top cover 2 to the battery cell 3.

Further, the first insulating sheet 5 has a third through hole 51, and the positive tab is inserted through the third through hole 51 and welded to the positive post 221, so as to further ensure the insulating effect of the first insulating sheet 5. Further, the material of the first insulating sheet 5 is a material having elastic insulation such as natural rubber, styrene-butadiene rubber, ethylene propylene diene rubber or thermoplastic elastomer.

In some embodiments of the present utility model, as shown in fig. 3, the battery 100 further includes a second insulating sheet 6. The second insulating sheet 6 is disposed between the bottom wall of the steel shell 1 and the battery cell 3, and the second insulating sheet 6 is provided with a first through hole 61 through which the negative electrode ear of the battery cell 3 passes and a second through hole 62 through which the welding needle is welded. It can be understood that the negative electrode tab of the battery core 3 penetrates out from the second insulated first through hole 61, the welding pin penetrates out from the second through hole 62 of the second insulating sheet 6 and welds the negative electrode tab at the bottom of the steel shell 1, and insulation between the negative electrode tab and the battery core 3 is ensured by the arrangement of the second insulating sheet 6, so that short circuit of the battery 100 is avoided, and safety of the battery 100 is ensured.

Further, the material of the second insulating sheet 6 is a material having elastic insulation such as natural rubber, styrene-butadiene rubber, ethylene propylene diene monomer rubber or thermoplastic elastomer.

In some embodiments of the present utility model, as shown in fig. 3, the outer contour of the second insulating sheet 6 is identical to the inner contour shape and size of the cross section of the steel can 1, thereby further ensuring the insulating effect of the second insulating sheet 6 between the negative electrode tab and the battery cell 3, further avoiding the short circuit of the battery 100, and improving the safety of the battery 100.

In some embodiments of the present utility model, as shown in fig. 3, the first through holes 61 are two spaced apart, the second through holes 62 are located between the two first through holes 61, and the negative electrode lugs are led out to two sides as a first negative electrode lug and a second negative electrode lug, and the first negative electrode lug and the second negative electrode lug are respectively inserted into the two first through holes 61 and then bent toward the second through holes 62. It will be appreciated that the negative electrode tab is formed by tab shaping to lead out the first negative electrode tab and the second negative electrode tab to two sides, the first negative electrode tab is penetrated out from one of the first through holes 61 and is bent towards the second through hole 62, the second negative electrode tab is penetrated out from the other first through hole 61 and is bent towards the second through hole 62, the welding needle is penetrated out from the second through hole 62 and welds the first negative electrode tab and the second negative electrode tab to the bottom of the steel shell 1, the plane of the bottom of the second insulating sheet 6 and the battery cell 3 is ensured to be relatively flat by such arrangement, and the connection between the welding of the negative electrode tab and the steel shell 1 is ensured to be reliable.

In some embodiments of the utility model, as shown in fig. 8 and 9, battery 100 also includes an inner liner 7. Wherein, the battery cell 3 is wound on the inner liner 7, and the inner liner 7 has a through hole 71 penetrating in the top-to-bottom direction of the battery 100. It can be appreciated that, in the process of winding the battery cell 3, the winding needle is inserted into the through hole 71 of the inner liner 7 to drive the inner liner 7 and the battery cell 3 to wind together, the inner liner 7 provides an initial curvature for the battery cell 3, so as to prevent the risk of micro short circuit and the like caused by the bending of the battery cell 3, improve the safety of the battery 100, and play a certain supporting role on the battery cell 3 through the inner liner 7, thereby further ensuring the reliability of the battery 100. Meanwhile, in the process of welding the negative electrode tab and the bottom of the steel can 1, a welding pin is inserted through the through hole 71 of the inner liner 7 and the second insulating second through hole 62 to weld the negative electrode tab to the bottom of the steel can 1.

In some embodiments of the present utility model, as shown in fig. 8 and 9, the support member 72 is disposed in the through hole 71, and the support member 72 is connected to two opposite walls of the through hole 71, so that the support member 72 supports the inner liner 7 to enhance the overall strength of the inner liner 7, prevent the inner liner 7 from being deformed, and improve the reliability of the battery 100.

Further, the material of the inner liner 7 is an insulating plastic material such as PP (Polypropylene), PE (Polyethylene), PVC (Polyvinyl Chloride ), PS (Polystyrene), or PET (Polyethylene Glycol Terephthalate, polyethylene terephthalate).

Thereby making it possible to

In some embodiments of the utility model, as shown in fig. 1-3, the outer profile of the cross section of the steel shell 1 is rounded rectangular. From this, can guarantee through such setting that annular steel hoop 23 is connected the back with steel casing 1 has sealed dead angle, compare for the battery of cuboid shape and seal four diagonal angles through buckle or sealing washer in prior art steel casing's cross section, battery 100 seal strength of this application is high, reduces risks such as weeping and airtight bad, further improves battery 100's reliability.

Further, the outer profiles of the cross sections of the top cover 2, the battery cell 3 and the inner liner 7 are round-corner rectangles, so that the utilization of the inner space of the steel shell 1 is maximized.

In some embodiments of the present utility model, the steel hoop 23 has a thickness A1 in the top-to-bottom direction of the steel shell 1, wherein 0.2 mm.ltoreq.A1.ltoreq.1.0 mm. It will be appreciated that the thickness A1 of the steel collar 23 may be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1.0mm, so as to ensure a reliable connection between the steel collar 23 and the steel shell 1 and thus a reliable connection between the top cover 2 and the steel shell 1.

An electronic device according to an embodiment of the present utility model is described below.

An electronic device according to an embodiment of the present utility model includes the battery 100 described above. The electronic device can be a vehicle, a mobile phone, a computer, an intelligent household appliance, an unmanned aerial vehicle and the like.

According to the electronic device provided by the embodiment of the utility model, the battery 100 is arranged, the steel shell 1 is provided with the accommodating space, the top cover 2 is arranged at the top of the steel shell 1, the top cover 2 comprises the cover body 21, the pole 22 and the steel hoop 23, the cover body 21 is a plastic piece, the steel hoop 23 is arranged at one side of the top cover 2 facing the steel shell 1 and is connected with the steel shell 1, the steel hoop 23 is used for fixing the top cover 2 and the steel shell 1, and therefore the top cover 2 and the steel shell 1 are connected to seal the battery cell 3 in the steel shell 1, and the cover body 21, the pole 22 and the steel hoop 23 are integrated, so that the assembly process of the battery 100 is simple and the assembly efficiency is high.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A battery, comprising:

the steel shell is provided with an accommodating space;

the top cover is arranged at the top of the accommodating space and comprises a cover body, a pole and a steel hoop, wherein the cover body, the pole and the steel hoop are integrated, the cover body is a plastic piece, the steel hoop is arranged at one side of the top cover facing the steel shell and is connected with the steel shell, and the steel hoop is used for fixing the top cover and the steel shell;

and the battery cell is arranged in the accommodating space, and the lug of the battery cell is connected with the pole.

2. The battery according to claim 1, wherein the shape of the steel hoop is a ring shape extending in the circumferential direction of the lid body.

3. The battery of claim 1, wherein the cap body has a blast-resistant hole therein, the top cap further comprising:

the explosion-proof membrane is arranged at the explosion-proof hole, and the steel hoop, the cover body, the pole and the explosion-proof membrane are injection-molded integrated parts.

4. A battery according to any one of claims 1-3, wherein the top cover is further provided with a liquid injection hole and a sealing plug, and the sealing plug is arranged at the liquid injection hole; the liquid injection hole is used for injecting electrolyte into the accommodating space, and the sealing plug is used for sealing the liquid injection hole.

5. The battery of claim 4, wherein the sealing plug comprises:

the threaded fastener is in threaded connection with the liquid injection hole;

the rubber plug is connected with one side of the threaded fastener, facing the inside of the steel shell, and is used for blocking the liquid injection hole.

6. A battery according to any one of claims 1-3, wherein the tab comprises a positive tab and a negative tab, the positive tab being led out of the upper side of the cell and connected to the positive tab, and the negative tab being led out of the upper side of the cell and connected to the negative tab.

7. A battery according to any one of claims 1-3, wherein the post comprises a positive post and the tab comprises a positive tab and a negative tab, the positive tab being led out of the upper side of the cell and connected to the positive post and the negative tab being led out of the lower side of the cell and connected to the steel can.

8. The battery of claim 7, wherein the battery further comprises:

the first insulating piece is arranged between the top cover and the battery cell, and the positive electrode lug penetrates through the first insulating piece to be connected with the positive electrode post.

9. The battery of claim 7, wherein the battery further comprises:

the second insulating piece is arranged between the bottom wall of the steel shell and the battery cell, and the second insulating piece is provided with a first through hole and a second through hole, wherein the first through hole is used for the negative electrode lug of the battery cell to penetrate through, and the second through hole is used for welding a welding needle.

10. The battery of claim 7, wherein the battery further comprises:

and a liner on which the battery cells are wound, the liner having a through hole penetrating in a top-to-bottom direction of the battery.

11. The battery of claim 10, wherein a support member is disposed within the through-hole, the support member being connected to opposite walls of the through-hole.

12. The battery according to any one of claims 8-11, wherein the outer profile of the cross section of the steel can is rounded rectangular.

13. An electronic device comprising a battery according to any one of claims 1-12.

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