Battery and electronic equipment

Abstract

The utility model discloses a battery and an electronic device, the battery comprises a battery cell assembly, a packaging sheet and a protection sheet, the packaging sheet is attached and fixed on the back surface of the battery cell assembly, a plurality of edge covering sheets are formed on the edge of the packaging sheet, and the edge covering sheets are bent along the edge of the battery cell assembly to wrap the battery cell assembly; the protection sheet is attached and fixed on the front surface of the battery cell assembly; and the protection sheet is matched with the packaging sheet to package the battery cell assembly. According to the utility model, the structure of the battery is optimized, and the battery core assembly can be packaged and wrapped only by the packaging sheet and the protection sheet without additionally arranging an outer frame, so that the frameless design of the optimized battery is realized, the thickness of the battery is favorably reduced, and the light and thin design of the battery is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile terminals, and in particular to a battery and electronic equipment. Background Art

[0002] Like traditional desktop computers, laptops consist of a monitor, keyboard / mouse, processor, memory, and hard drive. However, while these components are the same, laptops are smaller, lighter, and easier to carry. Portability is generally considered their biggest advantage over desktop computers. A typical laptop weighs only about 2 kilograms, making it incredibly convenient to carry around for work or travel, making it an essential companion for both business trips and office tasks.

[0003] Currently, market competition is increasingly fierce, with more and more brands opting for thinner and lighter laptops. As a key component of laptops, batteries pose a greater challenge to battery manufacturers in designing and manufacturing thinner and lighter batteries. However, existing laptop batteries generally have plastic frames, resulting in a relatively thick overall battery, generally at least 4mm thick, which makes it difficult to meet the demand for thin and light designs. Utility Model Content

[0004] The purpose of the utility model is to provide a battery and an electronic device. The battery adopts a frameless design, which solves the technical problem that the battery thickness of existing electronic devices is relatively thick and cannot meet the requirements of lightweight and thin design.

[0005] To achieve the above object, the present invention provides a battery comprising:

[0006] Battery cell components;

[0007] The encapsulation sheet is attached and fixed to the back of the battery cell assembly. The edge of the encapsulation sheet is formed with a plurality of edge sheets, which are bent along the edge of the battery cell assembly to wrap the battery cell assembly;

[0008] The protective sheet is attached and fixed to the front of the battery cell assembly, and cooperates with the packaging sheet to encapsulate the battery cell assembly.

[0009] Preferably, the battery cell assembly includes at least two groups of battery cells distributed in parallel, and an accommodation gap is formed between two adjacent groups of battery cells; the opposite sides of the protective sheet and the packaging sheet are respectively provided with upper raised ribs and lower raised ribs in an integrated manner, and the relatively arranged upper raised ribs and lower raised ribs are respectively embedded in the two opposite sides of the accommodation gap.

[0010] Preferably, the battery cell assembly also includes a protective plate attached to the side of one group of battery cells facing the packaging sheet, and at least one end of the protective plate is provided with an extended support portion extending to the accommodating gap, and the welding pad provided on the extended support portion is welded to the pole ear of the battery cell in the accommodating gap to form an electrical connection portion, and the upper raised rib and the lower raised rib are not in contact with the electrical connection portion.

[0011] Preferably, the battery cell assembly further comprises a flexible circuit board vertically arranged on one side of the protection plate, and the packaging sheet is provided with an avoidance gap, which is used to avoid the flexible circuit board so that the flexible circuit board is exposed outside the packaging sheet.

[0012] Preferably, the battery cell includes a first battery cell, a second battery cell and a third battery cell arranged in parallel from left to right; the protective plate is attached to the back of the second battery cell; the width of the protective plate is greater than the width of the second battery cell, the rear side of the protective plate is flush with the rear side of the second battery cell, and the front side of the protective plate is formed with an extension protrusion protruding from the front side of the second battery cell; the front side protrusion of the protective sheet is formed with a protective protrusion corresponding to the extension protrusion.

[0013] Preferably, the edge of the protection sheet covers the entire edge sheet.

[0014] Preferably, the edge sheet includes a front edge sheet and a rear edge sheet respectively wrapping the front and rear sides of the battery cell assembly; the rear edge sheet is a long strip structure, and the front edge sheet is a segmented continuous structure; the front edge sheet includes:

[0015] a first front edge sheet, the first front edge sheet wrapping the front side of the first battery cell;

[0016] a second front binding piece, the second front binding piece wrapping the front side of the extended protrusion;

[0017] A third front edge sheet, the third front edge sheet wrapping the front side of the third battery cell;

[0018] The fourth front edge piece wraps the front side of the first battery cell, and the avoidance gap is formed between the second front edge piece and the fourth front edge piece. The side edges of the second front edge piece and the fourth front edge piece are flush after being bent.

[0019] Preferably, a first folding angle is formed at both ends of the front edging piece and the rear edging piece respectively; the edging piece also includes a left edging piece and a right edging piece that respectively wrap the left and right ends of the battery cell assembly, and a second folding angle is formed at both ends of the left edging piece and the right edging piece respectively; after all the edging pieces are bent, the adjacent first folding angles and the second folding angles are relatively fitted together.

[0020] Preferably, the battery cell assembly includes a TCO layer integrated on the protection plate.

[0021] Preferably, the side edge of the protective sheet is provided with a plurality of locking ears, which are fixedly connected to the fixing buckles; all the locking ears are respectively provided on the front and rear sides of the protective sheet, and / or respectively provided on the left and right ends of the protective sheet.

[0022] Preferably, the locking ear includes a supporting portion, which is protruding from one side of the protective sheet, and the top side edge of the fixing buckle is flush with the top side surface of the protective sheet or the top side edge of the fixing buckle is lower than the top side surface of the protective sheet.

[0023] Preferably, the fixing buckle is provided with a waist-shaped hole for a fastening screw to pass through, and the relative position between the fixing buckle and the locking ear can be adjusted by adjusting the position of the fastening screw in the waist-shaped hole.

[0024] The utility model also provides an electronic device, comprising a rear housing and the battery, wherein the battery is fixedly arranged in the rear housing.

[0025] Compared with the background technology, the present invention optimizes the structure of the battery. The optimized battery includes a battery cell assembly, a packaging sheet and a protective sheet. During assembly, the packaging sheet is first attached and fixed to the back of the battery cell assembly, and then all the edge sheets of the packaging sheet are bent to wrap the edge of the battery cell assembly. Then the protective sheet is attached and fixed to the front of the battery cell assembly, so that the protective sheet cooperates with the packaging sheet to encapsulate the battery cell assembly. In this way, only the packaging sheet and the protective sheet are needed to encapsulate and wrap the battery cell assembly, and no additional outer frame is required, so that the optimized battery can achieve a frameless design, which is conducive to reducing the thickness of the battery and making the battery lightweight and thin.

[0026] The electronic device provided by the utility model includes the above-mentioned battery. The thinning design of the battery makes the entire device lighter and thinner, so that the entire device can achieve a lightweight and thin design. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0028] Figure 1 An exploded diagram of a battery provided in an embodiment of the present utility model;

[0029] Figure 2 An axonometric view of a battery provided by an embodiment of the present utility model;

[0030] Figure 3 for Figure 2 Another axonometric drawing of

[0031] Figure 4 for Figure 2Exploded diagram;

[0032] Figure 5 for Figure 2 Another exploded image of

[0033] Figure 6 for Figure 2 Assembly diagram of the cell components and packaging sheets;

[0034] Figure 7 for Figure 2 Structural diagram of the battery cell assembly;

[0035] Figure 8 for Figure 2 A schematic diagram of the front side of the middle protective sheet;

[0036] Figure 9 for Figure 2 Schematic diagram of the back side of the middle protective sheet;

[0037] Figure 10 for Figure 2 Front view of the mid-package;

[0038] Figure 11 for Figure 2 Schematic diagram of the back side of the package;

[0039] Figure 12 for Figure 2 Assembly diagram of the center lock attachment ear and fixing buckle;

[0040] Figure 13 for Figure 12 Side view of;

[0041] Figure 14 for Figure 2 Structural diagram of the middle lock attachment ear;

[0042] Figure 15 for Figure 2 Structural diagram of the middle fixing buckle;

[0043] Figure 16 for Figure 15 main view.

[0044] The reference numerals are as follows:

[0045] Battery cell assembly 1, packaging sheet 2, protective sheet 3 and fixing buckle 4;

[0046] Battery cell 10, accommodating gap 11, protection plate 12 and flexible circuit board 13;

[0047] A first battery cell 101, a second battery cell 102 and a third battery cell 103;

[0048] Extended protrusion 121;

[0049] Edge piece 20, lower raised rib 21 and avoidance notch 22;

[0050] Front side edging piece 201, back side edging piece 202, left end edging piece 203, right end edging piece 204, first folding corner 205 and second folding corner 206;

[0051] A first front edge piece 2011, a second front edge piece 2012, a third front edge piece 2013 and a fourth front edge piece 2014;

[0052] Upper raised rib 31, protective protrusion 32 and locking ear 33;

[0053] Supporting part 331;

[0054] Concave groove 41 and waist-shaped hole 42. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0056] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0057] The present utility model discloses a battery, as shown in the attached Figures 1 to 5 As shown, it includes a battery cell assembly 1, a packaging sheet 2 and a protective sheet 3. The packaging sheet 2 is attached and fixed to the back of the battery cell assembly 1 with double-sided tape. The thickness of the packaging sheet 2 can reach 0.1 mm. The packaging sheet 2 can be supported by PET material, which can meet both insulation design requirements and higher fire protection requirements. Compared with the existing glue frame, the packaging sheet 2 is thinner, so as to reduce the thickness of the battery and make it easier for the battery to achieve a lightweight design. Among them, the full English name of PET is polyethylene terephthalate, and its corresponding Chinese name is polyethylene terephthalate. Several edging sheets 20 are formed on the edge of the packaging sheet 2. The edging sheets 20 are bent along the edge of the battery cell assembly 1 to wrap the battery cell assembly 1, so that the battery cell assembly 1 is half-wrapped. As a preferred embodiment, all the edging sheets 20 are bent along the edge of the battery cell assembly 1.

[0058] The protective sheet 3 is attached to the front of the battery cell assembly 1 using double-sided tape. The thickness of the protective sheet 3 can reach 0.2mm. The protective sheet 3 has excellent strength and toughness, providing effective protection for the surface of the battery cell assembly 1, preventing damage caused by external forces, and improving battery reliability. The protective sheet 3 is made of an insulating material, such as a PC sheet. The full English name for PC is Polycarbonate, and its corresponding Chinese name is Polycarbonate. Of course, the material of the protective sheet 3 is not limited to this.

[0059] During assembly, the packaging sheet 2 is first attached and fixed to the back of the battery cell assembly 1, and then all the edge sheets 20 of the packaging sheet 2 are bent to wrap the edges of the battery cell assembly 1. Figure 5 As shown, the protective sheet 3 is attached and fixed to the front of the battery cell assembly 1, so that the protective sheet 3 cooperates with the packaging sheet 2 to encapsulate the battery cell assembly 1. In this way, only the packaging sheet 2 and the protective sheet 3 are needed to encapsulate and wrap the battery cell assembly 1, and no additional outer frame is required, so that the optimized battery can achieve a frameless design, which is conducive to reducing the thickness of the battery. The thickness of the optimized battery does not exceed 2.2 mm, and the weight can be reduced by 10% to 20%, so that the battery can achieve a lightweight design.

[0060] As a preferred embodiment, the edge of the protective sheet 3 is pressed against the entire edge sheet 20 to prevent the edge sheet 20 from loosening and improve the packaging quality. Of course, the protective sheet 3 can also be first attached and fixed to the front of the battery cell assembly 1, and then the edge sheet 20 of the packaging sheet 2 is used to wrap the edges of the battery cell assembly 1 and the protective sheet 3, so that the edge sheet 20 is attached to the edge of the protective sheet 3, which can also achieve the purpose of encapsulating the battery cell assembly 1.

[0061] As attached Figure 5 and 7 As shown, the battery cell assembly 1 includes at least two groups of battery cells 10 arranged in parallel, with an accommodation gap 11 formed between the two adjacent groups of battery cells 10. The opposite sides of the protective sheet 3 and the packaging sheet 2 are respectively provided with an upper convex rib 31 and a lower convex rib 21 in an integrated manner. That is, the side of the protective sheet 3 facing the battery cell assembly 1 is provided with an upper convex rib 31 in an integrated manner, as shown in the attached figure. Figure 8 and 9 As shown, the side of the packaging sheet 2 facing the battery cell assembly 1 is integrally provided with a lower raised rib 21, as shown in the attached Figure 10 and 11 As shown, all the upper raised ribs 31 of the protective sheet 3 and all the lower raised ribs 21 of the packaging sheet 2 are distributed up and down and are opposite to each other. The relatively arranged upper raised ribs 31 and lower raised ribs 21 are respectively embedded in the two opposite sides of the accommodating gap 11. The upper raised ribs 31 and the lower raised ribs 21 can be used to protect the electrical connection parts in the accommodating gap 11, reduce the risk of malfunction of the electrical connection parts due to external force collision and impact, and enhance the strength of the protective sheet 3 and the packaging sheet 2.

[0062] As a preferred embodiment, the battery cell assembly 1 includes three groups of battery cells 10 distributed in parallel, as shown in the attached Figure 7 As shown, two accommodating gaps 11 are formed between the three groups of battery cells 10. Accordingly, two upper raised ribs 31 are integrally formed on the lower side of the protective sheet 3, and two lower raised ribs 21 are integrally formed on the upper side of the encapsulation sheet 2. An upper raised rib 31 and a lower raised rib 21 are embedded on either side of each accommodating gap 11. The thickness of the upper raised rib 31 can reach 0.2 mm. Of course, the fixing method of the upper and lower raised ribs 31 and 21 is not limited to integral molding; adhesive bonding can also be used.

[0063] The battery cell assembly 1 also includes a protection plate 12, as shown in the attached Figure 7 As shown, the protective plate 12 is attached to one of the groups of battery cells 10 facing the packaging sheet 2. At least one end of the protective plate 12 is provided with an extended support portion, which extends into the accommodating gap 11 to provide support for the electrical connection portion. The extended support portion is provided with a welding pad, and the end of the battery cell 10 is provided with a pole ear. The welding pad and the pole ear are welded together in the accommodating gap 11 to form an electrical connection portion. The upper raised rib 31 and the lower raised rib 21 do not contact the electrical connection portion, ensuring that the protective sheet 3 and the packaging sheet 2 have good insulation properties, and ensuring that the surfaces of both the protective sheet 3 and the packaging sheet 2 are flat while improving the strength and toughness of the battery. As a preferred embodiment, the protective plate 12 is attached to the middle group of battery cells 10, and an extended support portion is provided at each end of the protective plate 12, and the two extended support portions extend into the two accommodating gaps 11 respectively.

[0064] As attached Figures 1 to 5 As shown, the battery cell assembly 1 also includes a flexible circuit board 13 vertically arranged on one side of the protective plate 12, and the packaging sheet 2 is provided with an avoidance gap 22, which is used to avoid the flexible circuit board 13, so that the flexible circuit board 13 is exposed outside the packaging sheet 2, and the flexible circuit board 13 is electrically connected outside the battery.

[0065] As a preferred embodiment, the battery cell 10 includes a first battery cell 101, a second battery cell 102 and a third battery cell 103 arranged in parallel from left to right, as shown in the attached figure. Figure 7 As shown, the protective plate 12 is attached to the back of the second battery cell 102, and two accommodating gaps 11 are formed between the first battery cell 101 and the second battery cell 102, and between the second battery cell 102 and the third battery cell 103. The width of the protective plate 12 is greater than the width of the second battery cell 102. The back side of the protective plate 12 is flush with the back side of the second battery cell 102, and the back sides of the first battery cell 101, the second battery cell 102 and the third battery cell 103 are flush. The front side of the protective plate 12 is formed with an extended protrusion 121, as shown in the attached figure. Figure 7 As shown, the extension protrusion 121 protrudes from the front side of the second battery cell 102. The front side of the protective sheet 3 is formed with a protective protrusion 32, as shown in the attached Figure 8As shown, the protective protrusion 32 corresponds to the extending protrusion 121 , so that the protective protrusion 32 effectively protects the extending protrusion 121 of the protective plate 12 and prevents the extending protrusion 121 of the protective plate 12 from being damaged by external force.

[0066] It should also be noted that the directions indicated by the four directional words "front", "back", "left" and "right" in the text are all attached. Figure 1 The current view prevails.

[0067] As attached Figure 5 and 6 As shown, the edge sheet 20 includes a front edge sheet 201 and a rear edge sheet 202 that respectively wrap the front and rear sides of the battery cell assembly 1. The rear edge sheet 202 is a long strip structure. Since the protective plate 12 protrudes from the three groups of battery cells 10, the front edge sheet 201 is a segmented continuous structure. The front side edging piece 201 includes a first front edging piece 2011, a second front edging piece 2012, a third front edging piece 2013 and a fourth front edging piece 2014. The first front edging piece 2011 wraps the front side of the first battery cell 101, the second front edging piece 2012 wraps the front side of the extended protrusion 121, the third front edging piece 2013 wraps the front side of the third battery cell 103, and the fourth front edging piece 2014 wraps the front side of the first battery cell 101. The avoidance gap 22 is formed between the second front edging piece 2012 and the fourth front edging piece 2014. The side edges of the second front edging piece 2012 and the fourth front edging piece 2014 after bending are flush, so that the side edges of the front side edging piece 201 after bending are more neat.

[0068] As attached Figure 5 and 6 As shown, the edge sheet 20 also includes a left edge sheet 203 and a right edge sheet 204 that respectively wrap around the left and right ends of the battery cell assembly 1. A first fold 205 is formed at both ends of the front edge sheet 201 and the rear edge sheet 202, and a second fold 206 is formed at both ends of the left edge sheet 203 and the right edge sheet 204. The hypotenuse of the first fold 205 and the second fold 206 is 45 degrees. After all the edge sheets 20 are bent, the adjacent first fold 205 and the second fold 206 are relatively affixed, so that the adjacent edge sheets 20 are arranged at 90 degrees and do not overlap, avoiding interference between the adjacent edge sheets 20, thereby avoiding the formation of gaps between the edge sheets 20 and the protective sheet 3, and improving the packaging quality.

[0069] The battery utilizes a cell-free TCO design. The cell assembly 1 includes a TCO layer integrated within the protective plate 12. This layer is located within the receiving gap 11 and adhered to the extended support portion of the protective plate 12. This reduces the thickness of the cell assembly 1 to a minimum of 1.66mm, further facilitating a thinner and lighter battery design. The full English abbreviation for TCO in this article stands for Transparent Conductive Oxide, and its Chinese translation is "Transparent Conductive Oxide."

[0070] As attached Figures 1 to 5 As shown, the side edge of the protective sheet 3 is provided with a number of locking ears 33, and the electronic device is provided with a number of fixing buckles 4. All the locking ears 33 are fixedly connected with all the fixing buckles 4 in a one-to-one correspondence, so that the entire battery is fixed on the electronic device. Taking into account the different models of electronic devices, in order to improve versatility, the distribution of the fixing buckles 4 is different, and the distribution of all the locking ears 33 provided on the edge of the protective sheet 3 is naturally different. The distribution of all the locking ears 33 can be flexibly adjusted according to the distribution of the fixing buckles 4 to adapt to different models of electronic devices. As a preferred embodiment, all the locking ears 33 are respectively provided on the front and back sides of the protective sheet 3, and two locking ears 33 are symmetrically provided on the front side of the protective sheet 3, as shown in the attached figure. Figures 1 to 5 As shown, three locking ears 33 are evenly distributed on the back side of the protective sheet 3. Of course, the distribution of the locking ears 33 is not limited to this. For example, all the locking ears 33 are respectively provided at the left and right ends of the protective sheet 3, or are evenly provided along the edge of the protective sheet 3.

[0071] As attached Figure 12 and 13 As shown, the fixing buckle 4 and the locking ear 33 are detachably connected by fastening screws, making it more convenient to repair and replace the battery. Figure 14 As shown, the locking tab 33 is L-shaped and includes a support portion 331 that protrudes from one side of the protective sheet 3 and bends toward the packaging sheet 2. The top edge of the fixing buckle 4 is flush with the top side of the protective sheet 3, or lower than the top side of the protective sheet 3, so that the entire battery and the fixing buckle 4 are interlocked and interlocked, thereby reducing the thickness of the battery.

[0072] As attached Figure 15 and 16 As shown, the fixing buckle 4 is provided with a waist-shaped hole 42, and the supporting portion 331 of the locking ear 33 is provided with a connecting hole. The fastening screw passes through the waist-shaped hole 42 and the connecting hole in sequence. By adjusting the position of the fastening screw in the waist-shaped hole 42, the relative position between the fixing buckle 4 and the locking ear 33 is adjusted, and thus the position of the battery in the battery compartment is adjusted, compensating for assembly errors between the battery and the battery compartment, reducing assembly defects caused by screw hole tolerances, and improving assembly quality. Of course, the connecting hole can be a circular hole or a waist-shaped hole.

[0073] The present invention also discloses an electronic device comprising a rear housing and a battery, wherein the battery is fixedly mounted within the rear housing. The battery is designed to be lightweight and thin, thereby reducing the overall thickness of the device, making the electronic device lighter and thinner, and meeting the requirements of lightweight and thin design. As a preferred embodiment, the electronic device is specifically a laptop computer.

[0074] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0075] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A battery, characterized in that: include: Battery cell assembly (1); An encapsulation sheet (2), the encapsulation sheet (2) being attached and fixed to the back of the battery cell assembly (1), a plurality of edge wrapping sheets (20) being formed on the edge of the encapsulation sheet (2), the edge wrapping sheets (20) being bent along the edge of the battery cell assembly (1) to wrap the battery cell assembly (1); A protective sheet (3) is attached and fixed to the front of the battery core assembly (1), and the protective sheet (3) cooperates with the encapsulation sheet (2) to encapsulate the battery core assembly (1).

2. The battery according to claim 1, characterized in that The battery cell assembly (1) comprises at least two groups of battery cells (10) arranged in parallel, with an accommodation gap (11) formed between two adjacent groups of battery cells (10); upper raised ribs (31) and lower raised ribs (21) are integrally provided on opposite sides of the protection sheet (3) and the packaging sheet (2), and the upper raised ribs (31) and the lower raised ribs (21) are respectively embedded in two opposite sides of the accommodation gap (11).

3. The battery according to claim 2, characterized in that The battery cell assembly (1) further comprises a protective plate (12) attached to one side of one group of the battery cells (10) facing the packaging sheet (2); at least one end of the protective plate (12) is provided with an extended support portion extending to the accommodating gap (11); the welding pad provided on the extended support portion is welded to the tab of the battery cell (10) in the accommodating gap (11) to form an electrical connection portion; and neither the upper raised rib (31) nor the lower raised rib (21) is in contact with the electrical connection portion.

4. The battery according to claim 3, characterized in that The battery cell assembly (1) further comprises a flexible circuit board (13) vertically arranged on one side of the protection plate (12); the packaging sheet (2) is provided with an escape notch (22); the escape notch (22) is used to escape the flexible circuit board (13) so that the flexible circuit board (13) is exposed outside the packaging sheet (2).

5. The battery according to claim 4, characterized in that The battery cell (10) comprises a first battery cell (101), a second battery cell (102) and a third battery cell (103) which are arranged in parallel from left to right; the protective plate (12) is attached to the back of the second battery cell (102); the width of the protective plate (12) is greater than the width of the second battery cell (102); the rear side of the protective plate (12) is flush with the rear side of the second battery cell (102); the front side of the protective plate (12) is formed with an extension protrusion (121) which protrudes from the front side of the second battery cell (102); the front side protrusion of the protective sheet (3) is formed with a protection protrusion (32) corresponding to the extension protrusion (121).

6. The battery according to claim 5, characterized in that The edge of the protection sheet (3) is pressed against the entire edge sheet (20).

7. The battery according to claim 6, characterized in that The edge wrapping piece (20) comprises a front edge wrapping piece (201) and a rear edge wrapping piece (202) respectively wrapping the front and rear sides of the battery cell assembly (1); the rear edge wrapping piece (202) is a long strip structure, and the front edge wrapping piece (201) is a segmented continuous structure; the front edge wrapping piece (201) comprises: a first front edge sheet (2011), the first front edge sheet (2011) wrapping the front side of the first battery cell (101); a second front edge sheet (2012), wherein the second front edge sheet (2012) wraps around the front side of the extending protrusion (121); a third front edge sheet (2013), the third front edge sheet (2013) wrapping the front side of the third battery cell (103); A fourth front edge sheet (2014), the fourth front edge sheet (2014) wraps the front side of the first battery cell (101), the avoidance gap (22) is formed between the second front edge sheet (2012) and the fourth front edge sheet (2014), and the side edges of the second front edge sheet (2012) and the fourth front edge sheet (2014) are flush after being bent.

8. The battery according to claim 7, characterized in that The front side edging piece (201) and the rear side edging piece (202) are respectively formed with a first folding angle (205) at both ends; the edging piece (20) further comprises a left end edging piece (203) and a right end edging piece (204) respectively wrapping the left and right ends of the battery cell assembly (1); the left end edging piece (203) and the right end edging piece (204) are respectively formed with a second folding angle (206) at both ends; after all the edging pieces (20) are bent, the adjacent first folding angles (205) and the adjacent second folding angles (206) are relatively fitted.

9. The battery according to claim 3, characterized in that The battery core assembly (1) comprises a TCO layer integrated on the protection plate (12).

10. The battery according to any one of claims 1 to 9, characterized in that The side edge of the protective sheet (3) is provided with a plurality of locking ears (33), and the locking ears (33) are fixedly connected to the fixing buckle (4); all the locking ears (33) are respectively provided on the front and rear sides of the protective sheet (3), and / or respectively provided on the left and right ends of the protective sheet (3).

11. The battery according to claim 10, characterized in that The locking ear (33) comprises a supporting portion (331), the supporting portion (331) is arranged to protrude from one side of the protective sheet (3), and the top side edge of the fixing buckle (4) is flush with the top side surface of the protective sheet (3) or the top side edge of the fixing buckle (4) is arranged lower than the top side surface of the protective sheet (3).

12. The battery according to claim 11, characterized in that The fixing buckle (4) is provided with a waist-shaped hole (42) for a fastening screw to pass through, and the relative position between the fixing buckle (4) and the locking ear (33) is adjusted by adjusting the position of the fastening screw in the waist-shaped hole (42).

13. An electronic device, characterized in that: The invention comprises a rear housing and the battery according to any one of claims 1 to 12, wherein the battery is fixed in the rear housing.

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