Battery with wire outgoing from side edge

Abstract

The utility model provides a side edge outgoing line battery which comprises a battery cell and a protection plate, the battery has a first direction and a second direction which are intersected pairwise, and the side edge outgoing line battery is characterized by comprising the battery cell and the protection plate; the battery cell is provided with two first side surfaces which are arranged away from each other along a first direction and two second side surfaces which are arranged away from each other along a second direction, and tabs are arranged on the first side surfaces; the protective plate comprises a first bending part and a second bending part which are arranged at an included angle, the first bending part is electrically connected with the tab on the first side surface, at least part of the second bending part extends out of the second side surface, and a lead-out wire is arranged on the second bending part and is used for being electrically connected with external equipment; a size of the battery in the first direction is larger than a size in the second direction. The bent protection plate is connected to the surface of the battery cell and is respectively connected with the tab of the battery cell and the interface of the external electric equipment, so that the problem that the wire outgoing directions of the internal battery cell and the whole battery are inconsistent under the condition that the buckling position of a mainboard of the whole product is limited can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a side edge outgoing line battery. BACKGROUND

[0002] The battery usually includes the electric core and the protection board, when the electric core is the winding electric core combined into shape in the winding mode, the electric core must be outgoing line along the short side of the electric core.

[0003] In prior art, the outgoing line position of the battery and the electric core is usually the same position, and for saving the packaging space, the length direction of the battery and the electric core is the same direction, that is, the battery and the winding electric core are outgoing line from the short side.

[0004] But in the case that the mainboard buckling position of some product whole machine has the restriction, the outgoing line position of the battery is fixed at the long end side, at this time, only the length direction of the winding electric core can be placed along the width direction of the battery, makes the outgoing line end at the short side of the winding electric core and the outgoing line end at the long side of the battery be in the same position. The battery assembled in this way, the packaging of outgoing line end is along the long side of the battery, will occupy the effective space of the battery, leads to the waste of battery capacity. UTILITY MODEL CONTENTS

[0005] The utility model embodiment provides a battery to solve the problem of the volume waste of the electric core caused by the length direction inconsistency of the battery and the electric core in the related art.

[0006] In order to solve the above technical problem, the utility model is realized as follows:

[0007] The utility model embodiment provides a side edge outgoing line battery, the battery has the first direction and the second direction that intersect each other, and it is characterized by comprising the electric core, the protection board.

[0008] The electric core has two first side faces arranged away along the first direction and two second side faces arranged away along the second direction, and the first side face is provided with a tab.

[0009] The protection board includes a first bending part and a second bending part arranged at an angle, the first bending part is electrically connected with the tab of the first side face, the second bending part at least partially extends to the outside of the second side face, and the second bending part is provided with a lead-out wire for electrically connecting with external equipment.

[0010] The size of the battery in the first direction is greater than the size in the second direction.

[0011] Optionally, in the first direction, the size of the electric core is Y, and in the second direction, the size of the electric core is X, and Y>X is satisfied.

[0012] Optionally, the battery further comprises a shell, the shell is wrapped outside the surface of the battery cell and forms an encapsulation layer at the corresponding position of the first side surface, and the tab passes through the encapsulation layer and is electrically connected with the first bending part.

[0013] Optionally, the encapsulation layer protrudes from the first side surface and is bent at one end close to the second bending part.

[0014] Optionally, a bonding pad is arranged on the first bending part, and the tab is welded on the bonding pad.

[0015] Optionally, the tab is arranged close to the second side surface, and the first bending part covers at least the tab.

[0016] Optionally, the protection plate is a flexible circuit board.

[0017] Optionally, one end of the first bending part away from the second bending part is provided with an expandable first winding part, and one end of the second bending part away from the first bending part is provided with an expandable second winding part.

[0018] Optionally, the first winding part extends to a target position along the second direction after being expanded, and the second winding part extends to a target position along the first direction after being expanded.

[0019] Optionally, the battery comprises a plurality of battery cells, the plurality of battery cells are arranged along the second direction, and the first bending part is electrically connected with the plurality of battery cells in sequence.

[0020] The utility model embodiment provides a kind of battery, including battery cell and protection plate, battery has the first direction and the second direction that intersect two by two, it is characterized in that: including battery cell, protection plate;Battery cell has two first side surfaces arranged away along the first direction and two second side surfaces arranged away along the second direction, and tab is arranged on the first side surface;Protection plate includes the first bending part and the second bending part arranged at an angle, the tab of the first bending part is electrically connected with the first side surface, and the second bending part at least partially extends to the outside of second side surface, and lead-out wire is arranged on the second bending part, and lead-out wire is used to be electrically connected with external device;The size of battery in the first direction is greater than in the second direction.The surface of battery cell is connected with a bending protection plate, respectively with the interface of the tab of battery cell and external power equipment is connected, can solve the problem that the tab of battery cell and the direction of battery are not consistent in the case where the mainboard buckling position of product whole machine is limited, need not to redesign battery, can increase the volume of battery cell body, reduce the waste caused by top seal, greatly increase the capacity of battery cell, and reduce part process, reduce production cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1A side edge wire-out battery provided by an embodiment of the utility model shows a schematic diagram of the utility model embodiment;

[0022] Figure 2 An explosion view of a side edge wire-out battery provided by an embodiment of the utility model shows a schematic diagram of the utility model embodiment;

[0023] Figure 3 A schematic diagram of a prior art side-by-side wire-out battery top seal occupying cell volume shows a schematic diagram of the utility model embodiment;

[0024] Figure 4 A schematic diagram of a side edge wire-out battery top seal occupying cell volume provided by an embodiment of the utility model shows a schematic diagram of the utility model embodiment;

[0025] Figure 5 A schematic diagram of a packaging layer fold angle provided by an embodiment of the utility model shows a schematic diagram of the utility model embodiment.

[0026] Reference signs: 100: battery; 10: cell; 11: first side surface; 12: second side surface; 13: tab; 20: protection plate; 21: first bending part; 22: second bending part; 23: lead-out wire; 24: first winding part; 25: second winding part; 30: shell; 31: packaging layer; 40: protective auxiliary material; 41: protection film; 42: adhesive paper; 421: bottom adhesive paper; 422: side adhesive paper; 423: top seal adhesive paper; 424: head adhesive paper; 43: silica gel pad; 44: double-sided adhesive DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the utility model. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily mean the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0029] As Figures 1 to 5As shown, the battery 100 includes the battery cell 10 and the protection plate 20, the battery 100 has a first direction and a second direction intersecting each other, the battery cell 10 has two first sides 11 arranged away along the first direction and two second sides 12 arranged away along the second direction, the first side 11 is provided with a tab 13; the protection plate 20 includes a first bending part 21 and a second bending part 22 arranged at an angle, the first bending part 21 is electrically connected with the tab 13 of the first side 11, the second bending part 22 at least partially extends to the outside of the second side 12, the second bending part 22 is provided with a lead-out wire 23, the lead-out wire 23 is used for electrically connecting with external equipment; the size of the battery 100 in the first direction is greater than the size in the second direction.

[0030] In the embodiment of the utility model, battery 100 includes battery cell 10 and protection plate 20, battery 100 is connected with the power equipment outside through the protection plate 20, battery 100 has the first direction and the second direction intersecting each other, wherein, the first direction is the length direction of battery 100, the second direction is the width direction of battery 100. Battery cell 10 has two first sides 11 arranged away along the first direction and two second sides 12 arranged away along the second direction, the first side 11 is provided with a tab 13, the positive electrode and the negative electrode of battery cell 10 are located in the first side 11, battery cell 10 is connected with the power equipment outside through the first side 11, and the first side 11 is defined as the top of battery cell 10, and the top is protected and packaged, and the packaging material needs to have good sealing property, corrosion resistance and mechanical strength.

[0031] The protection plate 20 is an L-shaped circuit board, and the protection plate 20 can be a printed circuit board (PCB) or a flexible circuit board (FPC). The protection plate 20 includes a first bending part 21 and a second bending part 22. The first bending part 21 is arranged on the first side 11 and is electrically connected with the tab 13. The second bending part 22 is arranged on the second side 12 and extends along the first direction. The second bending part 22 is provided with a lead-out wire 23 protruding from the surface of the protection plate 20 and is used for connecting with the power equipment outside. A solder pad can be arranged on the second bending part 22 at a corresponding position. A connector is welded on the solder pad and is used for connecting with the power equipment. The power equipment is electrically connected with the battery cell 10 through the protection plate 20, so that the battery cell 10 can supply power to the power equipment outside. The protection plate 20 on the surface of the battery cell 10 can protect the battery cell 10 from overcharging, overdischarging, overcurrent and short circuit. The lead-out wire 23 of the second bending part 22 can be arranged on the second side 12 of the battery cell 10, so that the lead-out position of the battery 100 can be changed flexibly, and the battery 100 can be adapted to different products without redesigning the products.

[0032] It should be noted that the winding cell 10 can only be made into a vertical long shape due to the limitation of its manufacturing process, and a wire outlet hole is usually arranged at the short edge of the cell 10 to lead out the positive and negative poles. The wire outlet is firmly connected to the pole piece of the cell 10 by welding or pressure connection, and the wire outlet end is packaged to avoid damage due to vibration or pulling. The manufacturing process of the winding cell 10 limits the wire outlet position of the battery 100. In the embodiment, a bent protection plate 20 is connected to the surface of the cell 10 to flexibly change the wire outlet position of the battery 100. The tab 13 located at the short edge of the cell 10 is connected to the protection plate 20. When the protection plate 20 is connected to the tab 13, the protection plate 20 and the tab 13 can be connected by welding or can be connected by bonding. When the protection plate 20 and the tab 13 are connected by bonding, the adhesive used for bonding can have conductivity. Of course, the protection plate 20 and the tab 13 can also be connected in other ways. The specific connection method of the protection plate 20 and the tab 13 is not limited in the embodiment of the utility model.

[0033] The cell 10 has a positive tab 13 and a negative tab 13. There is usually a certain distance between the positive tab 13 and the negative tab 13, and there is also a certain distance between the positive tab 13 and the negative tab 13 and the edge of the battery 100. Direct contact between the positive and negative poles is avoided to reduce the risk of short circuit, reduce the heat accumulation generated by the battery 100 during charging and discharging, and increase the mechanical stability and service life of the battery 100. The protection plate 20 should be insulated when connected to the positive and negative poles of the cell 10, for example, an insulating adhesive tape is arranged between the positive and negative connection pieces to prevent the positive and negative poles from contacting the metal shell of the battery 100 warehouse and causing short circuit.

[0034] The first bending part 21 and the second bending part 22 of the protection plate 20 can be an integral molding structure, which is processed and manufactured at one time, or the protection plate 20 can be bent and formed before the protection plate 20 is connected to the cell 10. The specific manufacturing method of the protection plate 20 is not limited in the embodiment of the utility model.

[0035] In addition, in some embodiments, in the first direction, the size of the second side surface 12 is Y, and in the second direction, the size of the first side surface 11 is X, Y>X.

[0036] In the embodiment of the utility model, in the first direction, the size of the second side 12 is Y, in the second direction, the size of the first side 11 is X, Y>X, the length of the second side 12 of the battery cell 10 is greater than the first side 11, the second side 12 is the long side of the battery cell 10, the first side 11 is the short side of the battery cell 10, the tab 13 of the battery cell 10 is located at the first side 11, and the wire is drawn from the short side. The first direction is the length direction of the battery 100, the second direction is the width direction of the battery 100, the battery cell 10 is consistent with the length direction of the battery 100, but the wire drawing position is different, and the positive and negative poles of the battery cell 10 are led to the interface position of the battery 100 and the product mainboard through the protection plate 20 on the surface of the battery cell 10.

[0037] The battery cell 10 in the embodiment can be a winding battery cell 10, and the winding process is to wind the positive and negative poles and the separator after slitting by controlling the speed, tension, relative position and the like of the pole piece. The characteristics of the process make it only possible to prepare regular-shaped lithium batteries 100. Due to the limitation of the winding battery cell 10 manufacturing process, only vertical long type can be made, and the wire drawing end of the battery cell 10 is located at the short side. Under normal circumstances, the wire drawing direction of the battery cell 10 and the battery 100 is consistent, and they are both drawn from the short side. However, in actual application, there are batteries 100 with product long end wire drawing buckling. In order to facilitate the leading of the tab 13 of the battery cell 10 to the wiring end of the battery 100 bin, the existing scheme mainly adopts multiple battery cells 10 side-by-side wire drawing, arranges the short side of the battery cell 10 along the length direction of the battery 100, and arranges multiple battery cells 10 in the same direction side by side to fill the space in the battery 100 bin. The battery 100 arranged in this way occupies a part of the volume on the top packaging on the one hand, wastes the capacity of the battery 100, and on the other hand, the tabs 13 of the battery cells 10 are connected to the same protection plate 20 when the battery cells 10 are arranged side by side, the protection plate 20 covers the wire drawing ends of the battery cells 10 in turn and is connected to each battery cell 10, and when one battery cell 10 is connected to the next battery cell 10, a local groove needs to be dug in the middle of the protection plate 20 to cross the top seal protruding from the surface of the battery cell 10, and an insulating adhesive tape needs to be pasted between the adjacent battery cells 10 for insulation treatment, and the process is relatively complex. The side wire drawing scheme in the embodiment can replace multiple battery cells 10 in the side-by-side wire drawing scheme with only one battery cell 10, increase the capacity of the battery 100, reduce part of the process, and reduce the cost.

[0038] In addition, in some embodiments, the battery 100 further includes a shell 30, the shell 30 is wrapped outside the surface of the battery cell 10 and forms an encapsulation layer 31 at the corresponding position of the first side 11, and the tab 13 penetrates through the encapsulation layer 31 and is electrically connected with the first bending part 21.

[0039] In the embodiment of the utility model, battery 100 still includes casing 30, casing 30 uses the aluminum plastic film as packing material, and is wrapped in the material surface of electric core 10. The aluminum plastic film generally has three layers, is nylon layer, aluminum layer and PP layer respectively, and the nylon layer guarantees the shape of the aluminum plastic film, reduces the damage to the shell, guarantees that the film does not deform before manufacturing lithium ion battery 100, prevents the penetration of air especially oxygen, maintains the environment inside electric core 10, and guarantees that the packing aluminum foil has good deformation ability. The aluminum layer is composed of a layer of metal aluminum, and its role is to prevent water from penetrating, maintain the environment inside electric core 10, and have a certain thickness strength to prevent the damage of the outside to electric core 10. And metal aluminum reacts with oxygen in the air at room temperature to form a dense oxide film, so that water vapor cannot penetrate, protecting the inside of electric core 10. The aluminum layer also provides the plasticity of the pit when the aluminum plastic film is formed. PP is the abbreviation of polypropylene, and the characteristics of this material are that it will melt at a temperature of more than 100 degrees Celsius and has viscosity. The PP layer melts and adheres together under the action of the heating of the head, solidifies and bonds after cooling to form a heat seal package, and the PP cannot be dissolved and swollen by the organic solvent in electric core 10, effectively preventing the internal electrolyte from contacting the aluminum layer, and avoiding corrosion of the aluminum layer. The aluminum plastic film packaging includes top sealing and side sealing, and the tab 13 of the electric core 10 extends from the top sealing and is electrically connected with the protection plate 20. Among them, the size of the packaging of the first side surface 11, that is, the top sealing in the first direction is M, in order to ensure the sealing property and avoid short circuit corrosion of the tab 13, the top packaging generally exceeds the material of the electric core 10 by 2.5 mm, that is, M is usually 2.5 mm. Understandably, this part of the top packaging will occupy part of the volume of the electric core 10.

[0040] Due to the limitation of the mainboard buckling position of the whole product, when the battery 100 is located at one side of the long side, the traditional processing method is to arrange the short side of the electric core 10 along the length direction of the battery 100, and the plurality of electric cores 10 are arranged in the same direction. The outgoing end of the electric core 10 is located at one side of the long side of the battery 100, and the plurality of electric cores 10 are uniformly packaged along the length direction of the battery 100. The tab 13 of each electric core 10 penetrates the top packaging and is connected with the external power consumption equipment.

[0041] As shown in Figure 3 When the outgoing line is arranged in this way, the volume of the top packaging of the electric core 10 is M*Y*d, M is the top sealing size of the electric core 10, Y is the size of the electric core 10 in the first direction, that is, the length of the electric core 10, and d is the thickness of the electric core 10. M is usually 2.5 mm, so the volume of the top packaging of the electric core 10 is 2.5*Y*d.

[0042] In the embodiment, the battery cell 10 is laid horizontally, the length direction of the battery cell 10 is consistent with the length direction of the battery 100, the outgoing wire direction of the battery cell 10 is along the first direction, the outgoing wire direction of the battery 100 is along the second direction, the tab 13 of the battery cell 10 is connected with the outgoing wire 23 of the protection plate 20 through the protection plate 20 covering the first side surface 11 and the second side surface 1212 of the battery cell 10, so that the change of the outgoing wire position is realized.

[0043] As shown in the figure, the packaging occupies the volume of the battery cell 10 as M*X*d, M is the top sealing size of the battery cell 10, X is the size of the battery cell 10 in the second direction, that is, the width of the battery cell 10, and d is the thickness of the battery cell 10, M is usually 2.5 mm, so the top packaging occupies the volume of the battery cell 10 as 2.5*X*d. Figure 4

[0044] The difference of the volume of the battery cell 10 occupied by the two arrangements of the top packaging is 2.5*(Y-X)*d.

[0045] Therefore, the packaging method can increase the capacity of the battery cell 10 by about 2.5*(Y-X) / XY*d*100%.

[0046] In addition, in some embodiments, the packaging layer 31 protrudes from the first side surface 11 and is bent at one end close to the second bending part 22.

[0047] As shown in the figure, the aluminum-plastic film packaging layer 31 is treated with an angle at the bending part of the protection plate 20, the packaging layer 31 protruding from the surface is folded to be attached to the surface of the battery cell 10, so that the protection plate 20 can be wound from the side and does not need to be wound from the top; the shape of the protection plate 20 is as close to the battery cell 10 and the battery 100 as possible, so as to avoid the protruding part and waste the volume of the battery cell 10 and the space of the battery 100. Figure 5 In addition, in some embodiments, the first bending part 21 is provided with a solder pad, and the tab 13 is welded on the solder pad.

[0048] In the embodiment, the electrical connection between the protection plate 20 and the battery cell 10 is realized through the solder pad and the connecting piece, one end of the connecting piece is spot-welded on the tab 13 of the battery cell 10, the other end is welded on the solder pad of the first bending part 21, and the second bending part 22 is connected to the external power-consuming equipment. The connecting piece can be a nickel piece, which has good conductivity and is not easy to be oxidized; or the connecting piece can also be a copper piece, which has good conductivity and can realize the electrical connection between the protection plate 20 and the battery cell 10. In order to prevent the copper from being oxidized in the air and affecting the performance of the protection plate 20, a layer of nickel can be plated on the copper piece. Of course, the connecting piece can also be made of other materials, such as a steel piece, a nickel-plated steel piece, etc. The specific material of the connecting piece is not limited in the embodiment.

[0049]

[0050] ​​In addition, in some embodiments, the tab 13 is arranged close to the second side 12, and the first bending portion 21 covers at least the tab 13.

[0051] In the present embodiment, the length of the first bending portion 21 can be adjusted according to the position of the tab 13 and the structure of the battery 100 compartment. In order to protect the tab 13 and maintain the normal charging and discharging of the battery cell 10, the surface of the tab 13 needs to be further insulated and reinforced, and protective accessories 40 such as adhesive paper and silica gel pads are added. The thickness of the adhesive paper is 0.05 mm, the thickness of the double-sided adhesive tape is 0.1 mm, and the thickness of the silica gel pad is 0.4 mm. Therefore, the packaging around the tab 13 will be partially protruding. By arranging the tab 13 close to the second side 12 and laying the adhesive paper and silica gel pad directly to the edge of the first side 11, the need for local grooving of the protective plate 20 when wrapping from the first side 11 to the second side 12 to bypass the protruding or recessed part of the surface of the battery cell 10 can be avoided. At the same time, the first bending portion 21 covering the tab 13 can achieve the function of electrically connecting the protective plate 20 to the battery cell 10 and protecting the tab 13, and can minimize the size of the protective plate 20.

[0052] In addition, in some embodiments, the protective plate 20 is a flexible circuit board.

[0053] In the present embodiment, the flexible circuit board is used as the protective plate 20, which is convenient for bending. It can be understood that in other embodiments, the protective plate 20 can also be replaced by other structures with the same function or effect.

[0054] In addition, in some embodiments, the first bending portion 21 is provided with a first winding portion 24 that can be unfolded at one end away from the second bending portion 22, and the second bending portion 22 is provided with a second winding portion 25 that can be unfolded at one end away from the first bending portion 21.

[0055] In the present embodiment, the protective plate 20 has one end in the first direction and one end in the second direction, the first bending portion 21 is provided with the first winding portion 24 at one end away from the second bending portion 22, and the second bending portion 22 is provided with the second winding portion 25 at one end away from the first bending portion 21. The first winding portion 24 and the second winding portion 25 are obtained by bending the flexible circuit board at the end by 180°, which can increase the fastening redundancy.

[0056] In addition, in some embodiments, the first winding portion 24 extends to a target position in the second direction after being unfolded, and the second winding portion 25 extends to a target position in the first direction after being unfolded.

[0057] In the present embodiment, both ends of the protective plate 20 are redundantly designed, and the first winding portion 24 and the second winding portion 25 can be unfolded and extend along the length direction of the first bending portion 21 and the second bending portion 22, and the length of the protective plate 20 can be freely adjusted according to the fastening position of the battery 100 compartment.

[0058] In addition, in some embodiments, the battery 100 includes a plurality of battery cells 10, the plurality of battery cells 10 are arranged along a second direction, and the first bending part 21 is electrically connected with the plurality of battery cells 10 in sequence.

[0059] In the embodiment, the scheme of the battery cell 10 with the side edge out of the line can be expanded to the structure design of the plurality of battery cells 10.

[0060] In order to make the purpose, technical scheme and beneficial effects of the utility model more clear, the packaging process of the battery 100 provided by the embodiment of the utility model is described below, so as to further describe the utility model. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model.

[0061] When the battery 100 is packaged, the following protective accessories 40 are used:

[0062] The protective film 41 protects the battery 100 during the installation process and prevents the battery cell 10 from being punctured by a mechanical hand.

[0063] The adhesive paper 42 insulates the battery cell 10 edge.

[0064] The silica gel pad 43 plays a buffering protection role on the tab 13.

[0065] The double-sided adhesive tape 44 fixes the battery 100 support (protective plate 20) and the battery cell 10.

[0066] The packaging process includes:

[0067] Step 101: battery cell 10 pre-processing

[0068] The top sealing adhesive paper 423 is pasted on the top of the battery cell 10, the top sealing adhesive paper 423 protects the battery 100 during the installation process and prevents the battery cell 10 from being punctured by a mechanical hand. The silica gel pad 43 covers at least the positive electrode and the negative electrode, which is used to protect the tab 13 and prevent the battery 100 support from damaging the battery cell 10 when collision occurs. Then the double-sided adhesive tape 44 is pasted, and the protective plate 20 is pasted on the double-sided adhesive tape 44.

[0069] The side edge adhesive paper 422 and the bottom adhesive paper 421 are pasted again.

[0070] Step 102: welding the protective plate 20, welding the protective plate 20 and the tab 13 of the battery cell 10 through the welding pad and the connecting sheet on the protective plate 20.

[0071] Step 103: post-processing

[0072] The head adhesive tape 424 is pasted on the surface of the protection plate 20, the protection plate 20 is insulated from the battery 100 bin, and the positive and negative tabs 13 of the battery cell 10 are prevented from contacting and corroding the battery cell 10. The FPC is bent, and the protection plate 20 is bent to the position corresponding to the interface of the external power equipment after the battery cell 10 is put into the battery 100 bin. Finally, the protection film 41 is pasted on the surface of the battery cell 10 to prevent the battery cell 10 from being scratched and pierced during the binning process.

[0073] In the embodiment of the utility model, battery includes battery cell and protection plate, battery has first direction and second direction that intersect two by two, it is characterized by: including battery cell, protection plate, battery cell has two first side faces that set away along first direction and two second side faces that set away along second direction, first side face is equipped with tab, protection plate includes first bending part and second bending part that set up in angle, first bending part is connected with the tab of first side face electricity, second bending part extends to second side face at least partially, second bending part is equipped with lead-out wire, lead-out wire is used for connecting with external device electricity, the size of battery in first direction is greater than in second direction. By connecting a piece of bent protection plate on the surface of the battery cell, the tab of the battery cell and the interface of the external power equipment are connected, the problem of inconsistent direction of the battery cell and the battery wire can be solved under the condition that the mainboard clamping position of the whole product is limited, the battery does not need to be redesigned, the volume of the battery cell body can be increased, the waste caused by top sealing can be reduced, the capacity of the battery cell can be greatly increased, and part of the process is reduced, and the production cost is reduced.

[0074] It should be noted that each of the embodiments in the specification adopts a progressive manner for description, and each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to.

[0075] Although the optional embodiments of the utility model have been described, those skilled in the art can make other changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to include the optional embodiments and all changes and modifications falling within the scope of the utility model.

[0076] Finally, it needs to be pointed out that in this text, relational terms such as first and second are used merely to distinguish one entity from another entity, and do not necessarily require or imply that there is any such actual relationship or order between these entities. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the article or terminal device including the element.

[0077] The above has carried out the detailed introduction to the technical scheme provided by the utility model, the principle and implementation mode of the utility model have been set forth in this text by the specific example, simultaneously, for the general technical personnel of the field, according to the principle and implementation mode of the utility model, there will be the change in the specific implementation mode and application range, on the whole, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A side tab battery (100) having a first direction and a second direction that intersect each other two by two, characterized in that: The battery (100) comprises an electric core (10) and a protection plate (20). The electric core (10) has two first sides (11) arranged away along the first direction and two second sides (12) arranged away along the second direction, and the first side (11) is provided with a tab (13). The protection plate (20) comprises a first bending part (21) and a second bending part (22) arranged at an angle, the first bending part (21) is electrically connected with the tab (13) of the first side (11), and the second bending part (22) at least partially extends to the outside of the second side (12), and the second bending part (22) is provided with a lead-out wire (23) for electrically connecting with external equipment. The size of the battery (100) in the first direction is greater than that in the second direction.

2. The battery (100) of claim 1, wherein, In the first direction, the size of the electric core (10) is Y, and in the second direction, the size of the electric core (10) is X, which satisfies Y>X.

3. The battery (100) of claim 2, wherein, The battery (100) further comprises a shell (30) wrapped outside the surface of the electric core (10) and forming an encapsulation layer (31) at the corresponding position of the first side (11), and the tab (13) passes through the encapsulation layer (31) and is electrically connected with the first bending part (21).

4. The battery (100) of claim 3, wherein, The encapsulation layer (31) covers the first side (11) and partially extends to the outside of the first side (11), and is bent at one end close to the second bending part (22).

5. The battery (100) of claim 1, wherein, The first bending part (21) is provided with a solder pad, and the tab (13) is welded on the solder pad.

6. The battery (100) of claim 1, wherein, The tab (13) is arranged close to the second side (12), and the first bending part (21) at least covers the tab (13).

7. The battery (100) of claim 1, wherein, The protection plate (20) is a flexible circuit board.

8. The battery (100) of claim 7, wherein, The first bending part (21) is provided with an expandable first winding part (24) at one end away from the second bending part (22), and the second bending part (22) is provided with an expandable second winding part (25) at one end away from the first bending part (21).

9. The battery (100) of claim 8, wherein, The first winding part (24) extends to a target position along the second direction after expansion, and the second winding part (25) extends to a target position along the first direction after expansion.

10. The battery (100) of claim 1, wherein, The battery (100) comprises a plurality of electric cores (10), and the plurality of electric cores (10) are arranged along the second direction, and the first bending part (21) is electrically connected with the plurality of electric cores (10) in sequence.

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