CN217361771U - Battery with a battery cell - Google Patents

Abstract

The utility model provides a battery, wherein, the battery comprises a battery core group, a first protective shell, a second protective shell and a protective pad, the battery core group comprises a battery core body and a circuit board positioned on one side of the battery core body; the protective pad covers at least one surface of the circuit board; the first protective shell and the second protective shell are respectively arranged on two opposite sides of the electric core group; the battery cell body, the circuit board and the protective pad are located between the first protective shell and the second protective shell. Through the setting of first protective housing and the laminating of second protective housing at electric core body to and set up the protection and fill up and cover at least one surface of circuit board in with electric core group, thereby the increase is to the protection of battery, and then improves the security of battery.

Description

Battery with a battery cell

Technical Field

The utility model relates to a battery technology field especially relates to a battery.

Background

With the rapid development of electronic products, the demand for batteries has been greatly increased, wherein soft-package lithium ion batteries are widely used in electronic products represented by smart phones and notebook computers because of their advantages of light weight, high energy density, good cycle performance, small internal resistance, flexible design, and the like.

However, the shell of the existing soft package lithium ion battery is usually set as a soft aluminum-plastic film, and compared with square and cylindrical lithium ion batteries, the shell of the existing soft package lithium ion battery has lower rigidity, so that the risk that the soft package lithium ion battery is scratched is higher, and the safety of the battery is lower.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a battery and electronic equipment to solve among the prior art battery because of being lacerated the relatively poor problem of security that leads to.

In order to achieve the above object, an embodiment of the present invention provides a battery, including: the battery pack comprises a battery cell group, a first protective shell, a second protective shell and a protective pad, wherein the battery cell group comprises a battery cell body and a circuit board positioned on one side of the battery cell body; the protective pad covers at least one surface of the circuit board; the first protective shell and the second protective shell are respectively arranged on two opposite sides of the electric core group; the battery cell body, the circuit board and the protective pad are located between the first protective shell and the second protective shell.

As an optional embodiment, the protection pad wraps the circuit board and a portion of the cell body corresponding to the circuit board; the first protective shell and the second protective shell are attached to the protective pad.

As an alternative embodiment, a side surface of the protection pad away from the circuit board does not exceed a side surface of the cell body in the thickness direction.

As an optional embodiment, the battery further comprises: the first bonding layer is arranged between the first protective shell and the electric core group, and the first protective shell is fixedly adhered to the surface of the electric core group through the first bonding layer; the second bonding layer is arranged between the second protective shell and the electric core group, and the second protective shell frame is fixedly adhered to the surface of the electric core group through the second bonding layer.

As an alternative embodiment, the second protective shell comprises a protective shell main body and a side wing, the side wing is arranged on at least one side edge of the protective shell main body, and the side wing extends towards the first protective shell.

As an optional implementation manner, the plate surface of the protective shell main body is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged in parallel on the plate surface of the protective shell main body.

As an optional implementation mode, the reinforcing ribs are concave towards the direction of the electric core group.

As an optional implementation mode, corners of the inner side and the outer side of the reinforcing ribs are provided with round corners.

As an alternative embodiment, the second protective shell further comprises a locking lug, which is connected to the side wing.

As an alternative embodiment, a crack stop groove is arranged at the connection between the locking lug and the side wing, and the width of the crack stop groove is greater than or equal to 1.5 times the thickness of the second protective shell.

As an alternative embodiment, the locking lug comprises a main body and a reinforcing body, the main body is connected with the side wing, and the main body is provided with a mounting hole; the reinforcing body is formed by folding one end of the main body far away from the side wing by 180 degrees towards the side wing.

As an alternative embodiment, the side wings sequentially comprise a first side wing, a second side wing, a third side wing and a fourth side wing which are positioned at four side edges of the protective shell main body; the vertical height values of the first side wing, the second side wing, the third side wing and the fourth side wing are less than or equal to the thickness value of the electric core group, and/or; the sharp corners of the first side wing, the second side wing, the third side wing and the fourth side wing are provided with fillet structures, and the fillet structures are larger than or equal to 0.5 mm.

As an alternative embodiment, the battery pack includes at least two battery cells, and the at least two battery cells are arranged side by side.

In the embodiment of the utility model, the protection pad is arranged to cover the surface of the circuit board of the cell group, which not only can form good protection function to the circuit board, but also can compensate the thickness difference between the circuit board area and the cell to a certain extent; set up first protective housing and second protective housing respectively through the double-phase offside at electric core group to make electric core body, circuit board and protection pad be located between first protective housing and the second protective housing, can form good guard action to the battery wholly, thereby can reduce the risk that the battery was lacerated when using, can improve the structural stability of battery, and then improved the security of battery. The embodiment of the utility model provides a not only be applicable to laminate polymer battery, still be applicable to other batteries.

It should be understood that the statements herein are not intended to identify key or critical features of any embodiment of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a battery provided by an embodiment of the present invention;

fig. 2 is a front view of a battery provided by an embodiment of the present invention;

fig. 3 is a second schematic structural diagram of a battery according to an embodiment of the present invention;

fig. 4 is a third schematic structural diagram of a battery according to an embodiment of the present invention;

fig. 5 is a fourth schematic structural diagram of a battery according to an embodiment of the present invention;

fig. 6 is a fifth schematic structural view of a battery according to an embodiment of the present invention.

Detailed Description

The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

The terms "first," "second," and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be understood that the structures so used are interchangeable under appropriate circumstances such that embodiments of the invention can be practiced in sequences other than those illustrated or described herein, and the terms "first," "second," and the like are generally used herein in a generic sense without limitation to the number of terms, e.g., the first term can be one, or more than one.

An embodiment of the utility model provides a battery, as shown in fig. 1 to fig. 6, include: the cell pack 10 comprises a cell body 11 and a circuit board 12 positioned on one side of the cell body 11; the protective pad 40 covers at least one surface of the circuit board 12; the first protective shell 20 and the second protective shell 30 are respectively arranged at two opposite sides of the electric core group 10; the cell body 11, the circuit board 12 and the protective mat 40 are located between the first protective shell 20 and the second protective shell 30.

In this embodiment, the first protective shell 20 and the second protective shell 30 are disposed at two opposite sides of the electric core pack 10, and the first protective shell 20 is disposed to be attached to the electric core pack 10, and the second protective shell 30 is disposed to be attached to the electric core pack 10, so that the first protective shell 20 and the second protective shell 30 cover the electric core pack 10, and in addition, the protective pad 40 covers two opposite surfaces of the circuit boards 12 in the electric core pack 10, and the protective pad 40 is also disposed between the first protective shell 20 and the upper second protective shell 30. Through the arrangement of the structure, the stability of the battery when the battery is scratched or damaged can be improved, and the safety of the battery is further improved.

It should be understood that the first protective shell 20 and the second protective shell 30 are disposed on two opposite sides of the cell group 10, and are attached to the cell body 11.

Fig. 2 is a front view of the battery, and it is understood that the first protective shell 20 and the second protective shell 30 may be sized according to the size of the battery cell pack 10, and the shape of the first protective shell 20 and the second protective shell 30 may be designed according to the shape requirement of the battery, for example: the first shield shell 20 and the second shield shell 30 are arranged in a rectangular shape to cover the electric core pack 10. Of course, the first protective shell 20 and the second protective shell 30 may be irregular shapes that can cover the electric core assembly 10, and the embodiment of the present invention is not limited thereto.

In addition, the electric core assembly 10 further includes a connector extending out of the circuit board 12, the protection pad 40 covers the circuit board 12, that is, the connector is not covered by the protection pad 40, and the connector can extend out of the first protection shell 20 and the second protection shell 30.

Also, the connector may be provided in such a manner as to protrude from the first shield shell 20 and the second shield shell 30.

Wherein the material of the protective pad 40 may be a plastic material, and in some embodiments, may be a flexible plastic material; in other embodiments, it may be a thermoplastic engineering plastic. The plastic material can better absorb the impact of external force, thereby forming good protection effect on the circuit board. The plastic material can directly form the protection pad 40 on the surface of the circuit board 12 through an injection molding process, and in the case that the protection pad 40 is made of thermoplastic engineering plastic, the protection pad 40 can be formed on the surface of the circuit board 12 through a low-pressure injection molding process. The protection pad 40 may also be a separate component, which may include two separate pads respectively disposed on two surfaces of the circuit board; it can also be a protective sleeve, and wraps the two surfaces of the circuit board in a sleeving manner.

It should be noted that, the first protective shell 20 and the second protective shell 30 are respectively disposed on two opposite sides of the electrical core assembly 10, that is, the electrical core assembly 10 can be wrapped by the first protective shell 20 and the second protective shell 30 in a manner of fixedly connecting the first protective shell 20 and the second protective shell 30, and in addition, an adhesive component can be further disposed to respectively adhere the first protective shell 20 and the second protective shell 30 to two opposite surfaces of the electrical core assembly 10.

As an alternative embodiment, the protection pad 40 wraps the circuit board 12 and the portion of the cell body 11 corresponding to the circuit board 12; the first shield shell 20 and the second shield shell 30 are attached to the shield pad 40.

In this embodiment, the protection pad 40 wraps the circuit board 12 and the portion of the cell body 11 corresponding to the circuit board 12, so that on one hand, the normal use of the telecommunication body 11 and the circuit board 12 is not affected, and on the other hand, the protection effect on the cell group 10 is also improved.

As an alternative embodiment, the surface of the protection pad 40 on the side away from the circuit board 12 does not exceed the surface of the cell body 11 on the side in the thickness direction.

In this embodiment, the protection pad 40 made of flexible material may be an integral structure with the circuit board 12 in the cell group 10, the integral structure is configured to increase the overall strength of the circuit board 12, and a side surface of the protection pad 40 away from the circuit board 12 is not more than a side surface of the cell body 11 in the thickness direction, so that the stability of the circuit board 12 can be improved, and the flatness of the circuit board 12 can be improved. Through the arrangement of the structure, the protection of the protection pad 40 on the circuit board 12 can be improved, and the safety of the battery is further improved.

In addition, the total thickness of the protection pad 40 and the circuit board 12 can be equal to the thickness of the electric core group 10, so that the section difference generated by the protection pad 40 and the electric core group 10 is reduced, the overall flatness of the battery core unit is improved, the setting attaching degree of the first protection shell 20 and the second protection shell 30 is improved, and the protection performance of the battery is further improved.

It should be appreciated that the protective pad 40 may be a closed and integrated structure, which can seal the circuit board 12 and the components in a closed space, effectively isolate dust, gas and moisture in the atmosphere, and improve the protection of the electronic components in the circuit board 12.

In addition, after the first protective shell 20 and the second protective shell 30 are both attached to the protective pad 40, the side of the protective pad 40 facing the first protective shell 20 may be in the same plane as the cell body 11, and the side of the protective pad 40 facing the second protective shell 30 may also be in the same plane as the cell body 11. Through the setting of this structure for the regional thickness of circuit board is unanimous with the thickness of above-mentioned electric core body, has eliminated the section difference between the regional thickness of circuit board and the above-mentioned electric core body, thereby has improved the holistic planarization of electric core group 10, makes first protective housing 20 and second protective housing 30 all closely laminate with the surface of electric core group 10.

As an alternative embodiment, referring to fig. 1, the battery further includes: the first adhesive layer 50 and the second adhesive layer 60, the first adhesive layer 50 is arranged between the first protective shell 20 and the electric core assembly 10, and the first protective shell 20 is fixedly adhered to the surface of the electric core assembly 10 through the first adhesive layer 50; the second adhesive layer 60 is disposed between the second protection shell 30 and the electric core assembly 10, and the second protection shell 30 is fixed and adhered to the surface of the electric core assembly 10 through the second adhesive layer 60.

Wherein, the first bonding layer 50 and the second bonding layer 60 can be made of Polycarbonate (PC) or polyethylene terephthalate (PET), and certainly can also be made of other materials suitable for the battery structure, and have the effect of adhering the first protective shell 20 and the second protective shell 30 to the electric core assembly 10, which is not limited in the embodiment of the present invention.

It is understood that the thickness of the first and second adhesive layers 50 and 60 can be set between 0.1mm and 0.2mm, enabling the puncture resistance of the first and second adhesive layers 50 and 60 to be greater than or equal to 180MPa without compromising the overall structural function.

In this embodiment, the first adhesive layer 50 adheres the first protective shell 20 to the surface of the electric core assembly 10, and the second adhesive layer 60 adheres the second protective shell 30 to the surface of the electric core assembly 10. Through the setting of this structure, can improve the guard action to electric core group 10, and then improve the security of battery.

In addition, the peel strength of the first adhesive layer 50 and the second adhesive layer 60 may be set in a range of 0.8kgf/25mm or more, which can better resist the influence of the battery heat on the adhesive force, thereby ensuring that the first protective case 20 is stably adhered to the surface of the electric core pack 10.

As an alternative embodiment, as shown in fig. 3, the second protective shell 30 includes a protective shell main body 31 and a side wing 32, the side wing 32 is disposed on at least one side edge of the protective shell main body 31, and the side wing 32 extends toward the first protective shell 20.

In this embodiment, the second protective shell 30 includes a protective shell main body 31 and a side wing 32, and the side wing 32 is disposed in a direction facing the first protective shell 20, so that the side wing 32 can cover the side edge of the electric core assembly 11, thereby improving the protection of the electric core assembly 10 and the safety of the battery.

Wherein, the quantity that flank 32 set up can be set for according to the structure or the demand of above-mentioned battery, and flank 32 can set up in at least one side of protecting shell main part 31 promptly, and is not limited to this the embodiment of the utility model provides a.

In addition, the side wings 32 may be fixed to the shield shell main body 31 at a certain angle, or may be perpendicular to the surface of the shield shell main body 31.

It should be noted that the protective shell main body 31 and the side wings 32 may be made of stainless steel, which is beneficial for processing and manufacturing the protective shell main body 31 and the side wings 32, and on the other hand, the stainless steel has the characteristics of high toughness, strong corrosion resistance and good high-temperature strength, so that the stability and safety of the battery can be improved.

In addition, in the case where the side wings 32 are disposed perpendicular to the second protective shell 30, the vertical height of the side wings 32 may be smaller than or equal to the thickness of the electric core assembly 10, so as to reduce the possibility of the edges of the side wings 32 scratching the first protective shell 20. The arrangement of the structure enables the cell group 10 to be covered and wrapped by the first protective shell 20 and the second protective shell 30 to form a coating of a closed structure, thereby improving the overall structural strength of the battery.

As an optional implementation manner, the plate surface of the protective shell main body 31 is provided with a plurality of reinforcing ribs 35, and the plurality of reinforcing ribs 35 are arranged in parallel on the plate surface of the protective shell main body 31.

Wherein, the quantity of strengthening rib 35 can be set for according to the size of second protecting crust 31, also can the formula according to the actual demand of above-mentioned battery and set for this the embodiment of the utility model provides a do not limit.

It should be noted that the reinforcing rib 35 may be formed by integral press, that is, the reinforcing rib 35 and the second protective shell 31 are an integral structure, and the arrangement of the structure improves the bending resistance of the battery, thereby improving the safety of the battery.

In this embodiment, through the structure that sets up strengthening rib 35 at the face of protecting crust main part 31, can cushion external force to can improve the barrier propterty of protecting crust main part 31, reduce the harm that external force brought above-mentioned battery, and then improve the security of above-mentioned battery.

As an alternative embodiment, a plurality of reinforcing ribs 35 are recessed toward the electric core assembly 10.

Wherein, the strengthening rib 35 can be the U word form, and the strengthening rib 35 is to the orientation indent of electric core group 10 to the strengthening rib 35 sets up at less than or equal to 20mm apart from the marginal distance of above-mentioned protecting crust main part 31, and the width value of strengthening rib 35 sets up at 5mm to 10mm, and the distance setting between the strengthening rib 35 is between 10mm to 15mm, and the distance of strengthening rib 35 indent and evagination can all set up at 0.2 mm.

In this embodiment, set up strengthening rib 35 to the direction indent of electric core group 10, strengthening rib 35 is to keeping away from the direction protrusion of electric core group 10 promptly, can improve the barrier propterty of protecting sheathing main part 31 through the setting of this structure, reduces the harm that external force brought to above-mentioned battery, and then improves the security of above-mentioned battery.

As an alternative embodiment, the corners of the inner and outer sides of the several ribs 35 are rounded.

Wherein, the fillet of the corner of strengthening rib 35 department in the inboard can be got 0.05mm, and 0.1mm can be got to the fillet of the corner of strengthening rib 35 department in the outside, selects to the fillet size of the corner of strengthening rib 35 in the inboard and the outside and can set for according to actual battery size or specific demand, and is here the embodiment of the utility model discloses do not restrict.

In this embodiment, the corner of the inside and outside of the reinforcing rib 35 is provided with a round corner structure, so that the damage to the electric core group 10 is reduced, and the protection of the battery is improved.

In an alternative embodiment, the first protective shell includes a protective shell main body and a side wing, the side wing is disposed on a side of the protective shell main body, and the side wing extends toward the second protective shell.

In this embodiment, the side wings may be disposed to cover the sides of the electric core pack, so as to improve the protection of the electric core pack and the safety of the battery.

Wherein, the quantity that above-mentioned flank set up can be set for according to the structure or the demand of above-mentioned battery, and is right this the embodiment of the utility model provides a do not restrict.

In addition, the side wings may be disposed on the main body of the protective shell at a certain angle, or may be disposed perpendicular to the surface of the main body of the protective shell.

It should be noted that the protective shell main body and the side wings may be made of stainless steel material, which is beneficial for processing and manufacturing the side wings of the protective shell theme, and on the other hand, the stainless steel material has the characteristics of high toughness, strong corrosion resistance and good high-temperature strength, thereby improving the stability and safety of the battery.

In addition, in the case that the wing is disposed perpendicular to the first protective shell, the vertical height of the wing may be less than or equal to the thickness of the electric core assembly, so as to reduce the possibility that the edge of the wing cuts the second protective shell. The arrangement of this structure for above-mentioned electric core group is covered the parcel by above-mentioned first protective housing and above-mentioned second protective housing, forms enclosed construction's cladding, thereby has improved the overall structure intensity of above-mentioned battery.

As an alternative embodiment, a rib structure is provided in the first protective casing, and the bending resistance of the battery can be improved by the rib structure, so that the safety of the battery is improved.

As an alternative embodiment, as shown in FIG. 3, the second protective shell 30 further includes a locking lug 33, and the locking lug 33 is connected to the lateral wing 32.

In this embodiment, the provision of the locking lug 33 facilitates the assembly of the battery, and the provision of this structure can improve the efficiency of the assembly and disassembly of the battery.

Wherein, the quantity that sets up of lock ear 33 can be set for according to above-mentioned battery structure or size, and is right this the embodiment of the utility model provides a do not limit.

In addition, the position of the lock lug 33 may be adjusted according to the position of the battery in the electronic device, which is not limited by the embodiment of the present invention.

As an alternative embodiment, as shown in fig. 5, a crack stop groove 34 is provided at the connection of the locking lug 33 and the lateral wing 32, and the width of the crack stop groove 34 is greater than or equal to 1.5 times the thickness of the second protective shell.

In this embodiment, the crack arrest groove 34 is disposed at the connection position of the lock lug 33 and the side wing 32, and in the battery assembling process or after the battery is assembled, the force is transmitted from the crack arrest groove 34 to the protective shell main body, so that the stress of the side wing 32 is reduced, and the stability of the lock lug 33 connected to the side wing 32 can be improved due to the structure.

In addition, the connection part of the crack-stopping groove 34 and the side wing 32 is in a circular arc structure, and the structure reduces the damage to the electric core group 10.

Two anti-crack grooves 34 are provided at positions where the lock lugs 33 are fixed to the side wings 32, respectively.

As an alternative embodiment, as shown in fig. 5 to 6, the locking lug 33 includes a main body 331 and a reinforcing body 332, the main body 331 is connected with the lateral wing 32, and the main body 331 is provided with a fitting hole 333; the reinforcing body 332 is formed by folding the end of the main body 331 away from the flap 32 by 180 ° in the direction of the flap 32.

In this embodiment, the reinforcement member 332 is formed by folding the end of the main body 331 away from the wing 32 by 180 ° in the direction of the wing 32, thereby forming an integral structure with an increased thickness, and this structure is provided to improve the bending resistance of the locking lug 33, thereby improving the efficiency of assembling the locking lug 33 to the device end, and on the other hand, the main body 331 is provided with the assembly hole 333, which can improve the efficiency of assembling and disassembling.

It should be noted that, the assembly holes 333 are used in combination with screws, and compared with the adhesive assembly method, the assembly and disassembly efficiency of the battery can be improved by adopting the screw assembly and disassembly, and in addition, the damage or damage to the electric core assembly 10 during the assembly and disassembly process can be reduced.

As an alternative embodiment, as shown in fig. 5, the locking lug 33 further includes a positioning hole 334, and the positioning hole 33 can improve the accuracy of the battery installation during the assembly process.

As an alternative embodiment, the side wings 32 sequentially include a first side wing 321, a second side wing 322, a third side wing 323, and a fourth side wing 324 at four sides of the protective shell main body 31; the vertical heights of the first, second, third and fourth side wings 321, 322, 323 and 324 are less than or equal to the thickness value of the electric core group 10, and/or; the sharp corners of the first side wing 321, the second side wing 322, the third side wing 323 and the fourth side wing 324 are set to be round structures, and the round structures are larger than or equal to 0.5 mm.

In this embodiment, the vertical height of each side wing is less than or equal to the thickness of the electric core assembly 10, so that the first protective shell 20 and the second protective shell 30 can better protect the battery during the assembly process, and the sharp corner of each side wing is set to be a rounded structure, so that the probability of damage to the battery due to the sharp structure can be reduced through the arrangement of the structure.

In addition, the side wings 32 include a first side wing 321, a second side wing 322, a third side wing 323 and a fourth side wing 324, and two ends of each adjacent side wing are provided with gaps, that is, the adjacent side wings are not connected to each other, and the arrangement of the structure can improve the connection stability between the side wings 32 and the protective case main body 31, thereby improving the overall stability of the battery and further improving the safety of the battery.

As an alternative embodiment, the first protective shell 20 and the second protective shell 30 are made of 304 stainless steel or 316 stainless steel.

In this embodiment, since the stainless steel material has the characteristics of high toughness, strong corrosion resistance, and good high-temperature strength, the first protective case 20 and the second protective case 30 may be made of the stainless steel material to improve the stability and safety of the battery.

As an alternative embodiment, the battery pack 10 includes at least two battery cells, and the at least two battery cells are arranged side by side.

Wherein, the electric core group 10 can be the soft packet of electric core group that adopts, and soft packet of electric core group is flexible because of the material, so soft packet of electric core group 10 is easily scratched or is harm, can improve the protectiveness of above-mentioned battery through setting up first protecting crust 20, second protecting crust 30 and protective pad 40.

It should be noted that the battery may be applied to various electric devices, and the electric devices may be a notebook computer, a smart phone, a new energy automobile, and the like. The implementation manner of the embodiment of the battery is also suitable for the embodiment of the electronic device, and can achieve the same technical effect, which is not described herein again.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus of the embodiments of the present invention is not limited to performing functions in the order discussed, but may include performing functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.

Claims (13)

1. A battery, comprising: the battery pack comprises a battery cell group, a first protective shell, a second protective shell and a protective pad, wherein the battery cell group comprises a battery cell body and a circuit board positioned on one side of the battery cell body;

the protective pad covers at least one surface of the circuit board;

the first protective shell and the second protective shell are respectively arranged on two opposite sides of the electric core group;

the battery cell body, the circuit board and the protective pad are located between the first protective shell and the second protective shell.

2. The battery of claim 1, wherein the protective mat wraps the circuit board and a portion of the cell body corresponding to the circuit board;

the first protective shell and the second protective shell are attached to the protective pad.

3. The battery of claim 1, wherein a side surface of the protection pad away from the circuit board does not exceed a side surface of the cell body in a thickness direction.

4. The battery of claim 1, further comprising: the first bonding layer is arranged between the first protective shell and the electric core group, and the first protective shell is fixedly adhered to the surface of the electric core group through the first bonding layer;

the second bonding layer is arranged between the second protective shell and the electric core group, and the second protective shell is fixedly adhered to the surface of the electric core group through the second bonding layer.

5. The battery of claim 1, wherein the second protective shell comprises a protective shell main body and a side wing disposed on at least one side of the protective shell main body, the side wing extending toward the first protective shell.

6. The battery according to claim 5, wherein the plate surface of the protective case main body is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged in parallel on the plate surface of the protective case main body.

7. The battery of claim 6, wherein the plurality of ribs are recessed toward the battery pack.

8. The battery of claim 6, wherein corners of the inner side and the outer side of the plurality of ribs are rounded.

9. The battery of claim 5, wherein the second protective shell further comprises a locking tab connected to the side wing.

10. The battery of claim 9, wherein a crack stop groove is formed at the connection between the locking lug and the side wing, and the width of the crack stop groove is greater than or equal to 1.5 times the thickness of the second protective shell.

11. The battery of claim 9, wherein the locking lug comprises a main body and a reinforcing body, the main body being connected with the lateral wing, the main body being provided with a fitting hole;

the reinforcing body is formed by folding one end of the main body far away from the side wing by 180 degrees towards the side wing.

12. The battery of claim 9, wherein the side wings comprise a first side wing, a second side wing, a third side wing and a fourth side wing located at four sides of the protective shell main body in sequence;

the vertical height values of the first side wing, the second side wing, the third side wing and the fourth side wing are less than or equal to the thickness value of the electric core group, and/or;

the sharp corners of the first side wing, the second side wing, the third side wing and the fourth side wing are arranged to be round corner structures, and the round corner structures are larger than or equal to 0.5 mm.

13. The battery of claim 1, wherein the battery pack comprises at least two cells, and the at least two cells are arranged side-by-side.

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