Battery and equipment terminal

Abstract

The utility model discloses a battery and a terminal device, the battery comprises a battery cell assembly and a protection plate assembly, the protection plate assembly comprises a protection plate main body and at least two flexible circuit boards, and the protection plate main body is arranged on one side of the battery cell assembly; one flexible circuit board is paved along the outer side edge of the battery cell assembly and is electrically connected with the protection plate main body; and the other flexible circuit boards are paved along the protection plate main body and are electrically connected with the protection plate main body. The flexible circuit board is arranged on the side face, the optimized flexible circuit board does not occupy the thickness of the battery, the thickness of the battery does not need to be compressed for arranging the flexible circuit board in a crossing mode under the condition that the installation space of the battery is not changed, the capacity of the battery is increased along with the increase of the thickness of the battery, the loss of the capacity of the battery is small, and the capacity of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of terminal equipment energy storage, in particular to a battery and an equipment terminal. Background Art

[0002] Battery energy storage devices are used to store electrical energy in batteries. Common battery energy storage devices on the market include lead-acid batteries, lithium-ion batteries, and sodium-ion batteries. Taking lithium-ion batteries as an example, as electronic products become increasingly intelligent, their power consumption is increasing, and the demand for fast charging is also increasing.

[0003] Currently, the way to increase the charging speed of lithium-ion batteries is to improve the overcurrent capacity of the battery protection board. Figure 1 As shown, to improve the protection board's current handling capacity, an additional FPC01 is placed across the battery surface at the bottom of the protection board. FPC stands for Flexible Printed Circuit (FPC). FPC01 connects to the sub-board at the bottom of the phone, improving current handling capacity. However, this increases the thickness of the battery. Due to the limited installation space of electronic products, placing the FPC01 across the battery surface can result in a loss of battery capacity. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a battery that solves the technical problem of battery capacity loss caused by the flexible circuit board occupying the battery thickness.

[0005] To achieve the above object, the present invention provides a battery, including a cell assembly and a protection plate assembly, wherein the protection plate assembly includes:

[0006] The protection board body is arranged on one side of the battery cell assembly;

[0007] The flexible circuit board includes at least two pieces; one of the flexible circuit boards is laid along the outer edge of the battery cell assembly and electrically connected to the protection board body; the remaining flexible circuit boards are laid along the protection board body and electrically connected to the protection board body.

[0008] Preferably, the flexible circuit board includes a first flexible circuit board laid along the outer edge of the battery cell assembly, and the first flexible circuit board is vertically connected to the protective plate body; an elastic compensation part is integrally formed on one end of the first flexible circuit board connected to the protective plate body, and the elastic compensation part is retracted along the extension line of the protective plate body.

[0009] Preferably, the elastic compensation portion is a Z-shaped folded structure, and the natural length of the Z-shaped folded structure is greater than 0.5 mm.

[0010] Preferably, the battery cell assembly is a dual-cell structure, and the dual-cell structure includes a first battery cell and a second battery cell arranged side by side.

[0011] Preferably, a second top seal is formed on the top side edge of the second battery cell, a second side seal is formed on the right side edge of the second battery cell, and a convex corner is formed at the corner of the second top seal and the second side seal; a first top seal is formed on the top side edge of the first battery cell, and an inward concave corner is formed on one end of the first top seal toward the second battery cell; the convex corner and the inward concave corner are wedge-shaped.

[0012] Preferably, the convex corner is a right-angled triangle structure extending along the length direction of the second top edge seal and perpendicular to the second side edge seal; the concave corner is a right-angled triangle structure formed by folding the end of the first top edge seal obliquely from top to bottom; the inclined surfaces of the convex corner and the concave corner are parallel and offset to form a wedge-shaped fit.

[0013] Preferably, a first bottom seal is formed on the bottom side of the first battery cell, and a second bottom seal is formed on the bottom side of the second battery cell; anti-wear corners are formed at the opposite ends of at least one of the first bottom seal and the second bottom seal, and the flexible circuit board bypasses the anti-wear corners.

[0014] Preferably, the anti-wear corner is an arc structure, a right-angled triangle structure or a right-angled trapezoidal structure.

[0015] Preferably, the flexible circuit board includes a first flexible circuit board vertically connected to the first end of the protective plate body and a second flexible circuit board parallel to the second end of the protective plate body; the first flexible circuit board is L-shaped and is laid along the outer edge of the battery cell assembly.

[0016] Preferably, the flexible circuit board includes a first flexible circuit board vertically connected to the first end of the protective plate body and a second flexible circuit board parallel to the second end of the protective plate body; the first flexible circuit board is linear and laid along the outer edge of the battery cell assembly.

[0017] Preferably, the flexible circuit board includes a first flexible circuit board vertically connected to one end of the protective plate body and a second flexible circuit board and a third flexible circuit board respectively laid parallel to the two ends of the protective plate body; the first flexible circuit board is L-shaped and laid along the outer edge of the battery cell assembly.

[0018] Preferably, the flexible circuit board includes a first flexible circuit board vertically connected to the middle section of the protective plate body and a second flexible circuit board and a third flexible circuit board respectively laid parallel to the two ends of the protective plate body; the first flexible circuit board is L-shaped and laid between two adjacent battery cells of the battery cell assembly.

[0019] Preferably, the flexible circuit board includes a first flexible circuit board and a second flexible circuit board respectively connected to one end of the protective board body; the first flexible circuit board is perpendicular to the protective board body, the first flexible circuit board is linear and is laid along the outer edge of the battery cell assembly; the second flexible circuit board is laid parallel to the protective board body.

[0020] Preferably, the flexible circuit board includes a first flexible circuit board, a second flexible circuit board and a third flexible circuit board that are connected in one piece. The second flexible circuit board and the third flexible circuit board are connected in parallel in an integrated manner and are laid on both ends of the protective plate body. The first flexible circuit board and the second flexible circuit board are vertically connected in an integrated manner, and the first flexible circuit board is laid along the outer edge of the battery cell assembly.

[0021] Preferably, the battery cell assembly is a single-cell structure, and a U-shaped edge seal is formed on the outer edge of the single-cell structure.

[0022] Preferably, the protection plate assembly further comprises:

[0023] The sealing block is arranged parallel to the protection board body and is used to wrap the protection board body, the tabs of the battery cell assembly and at least part of the flexible circuit board.

[0024] The utility model also provides a device terminal, comprising a device housing and the battery. The device housing has a battery compartment, and the battery is installed in the battery compartment.

[0025] Preferably, the distance between the battery cell assembly and the battery compartment is between 0.2 and 1 mm.

[0026] Compared with the background technology, the present invention optimizes the setting method of the flexible circuit board. The optimized flexible circuit board is laid along the outer edge of the battery cell assembly instead of being set across the surface of the battery cell assembly. That is, the flexible circuit board in the present invention is arranged sideways. The optimized flexible circuit board does not occupy the thickness of the battery. Under the condition that the battery installation space remains unchanged, there is no need to compress the battery thickness for the cross-setting of the flexible circuit board. The battery capacity increases with the increase of the battery thickness, and the loss of battery capacity is small, thereby achieving improved battery capacity. 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 A schematic diagram of a conventional battery with a flexible circuit board across its surface;

[0029] Figure 2 A schematic diagram of a battery provided in a first specific embodiment of the present utility model;

[0030] Figure 3 for Figure 2 Exploded diagram;

[0031] Figure 4 for Figure 2 A diagram of the state of the battery cell assembly when the two sealed edges are unfolded;

[0032] Figure 5 for Figure 2 The battery cell assembly and its enlarged part;

[0033] Figure 6 for Figure 2 The battery cell assembly and its enlarged part;

[0034] Figure 7 for Figure 2 Another schematic diagram;

[0035] Figure 8 for Figure 2 Middle elastic compensation part and its enlarged view;

[0036] Figure 9 for Figure 8 Schematic diagram of the natural length of the elastic compensation part;

[0037] Figure 10 for Figure 2 Middle anti-wear corner and its partial enlarged view;

[0038] Figure 11 for Figure 2 A partial enlarged view of the battery cell assembly and its end corners;

[0039] Figure 12 for Figure 2 Diagram of the unfolded protection plate assembly when installed on the battery cell assembly;

[0040] Figure 13 for Figure 12 Schematic diagram of the unfolded protective plate assembly;

[0041] Figure 14 A schematic diagram of a battery provided in a second specific embodiment of the present utility model;

[0042] Figure 15 for Figure 14 Exploded diagram;

[0043] Figure 16 A schematic diagram of a battery provided in a third specific embodiment of the present utility model;

[0044] Figure 17 for Figure 16 Another view of the same and a partial enlarged view thereof;

[0045] Figure 18 A schematic diagram of a battery provided in a fourth specific embodiment of the present utility model;

[0046] Figure 19 for Figure 18 Exploded diagram;

[0047] Figure 20 A schematic diagram of a battery provided in a fifth specific embodiment of the present utility model;

[0048] Figure 21 for Figure 20 Exploded diagram;

[0049] Figure 22 for Figure 21 Schematic diagram of the expansion of the middle protection plate assembly;

[0050] Figure 23 A schematic diagram of a battery provided in a sixth specific embodiment of the present utility model;

[0051] Figure 24 for Figure 23 Exploded diagram;

[0052] Figure 25 A schematic diagram of a battery protection plate assembly provided in a seventh specific embodiment of the present utility model;

[0053] Figure 26 for Figure 25 Exploded diagram;

[0054] Figure 27 This is a schematic diagram of a battery with fixing tape attached in the present invention;

[0055] Figure 28 A schematic diagram of a battery compartment of a device housing in accordance with the present invention;

[0056] Figure 29 for Figure 28 Longitudinal cross-sectional view.

[0057] The reference numerals are as follows:

[0058] 01-FPC;

[0059] 1-battery core assembly, 2-protection board assembly, 3-device casing and 4-fixing tape;

[0060] 11-first battery cell, 12-second battery cell, 13-convex corner, 14-concave corner, 15-anti-wear corner, 16-end corner and 17-convex corner;

[0061] 111-first top edge seal, 112-first side edge seal and 113-first bottom edge seal;

[0062] 121 - second top edge seal, 122 - second side edge seal and 123 - second bottom edge seal;

[0063] 21-protection board body, 22-first flexible circuit board, 23-second flexible circuit board, 24-third flexible circuit board and 25-sealing block;

[0064] 221- elastic compensation part;

[0065] 31-Battery compartment. DETAILED DESCRIPTION

[0066] 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.

[0067] In order to enable those skilled in the art to better understand the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0068] First of all, it should be noted that the device terminals mentioned in this article can be electronic products such as mobile phones and tablets.

[0069] The present utility model discloses a battery, as shown in the attached Figure 2 and 3 As shown, the battery pack includes a cell assembly 1 and a protective plate assembly 2. The cell assembly 1 includes at least one battery cell, and the protective plate assembly 2 includes a protective plate body 21 and at least two flexible circuit boards. The protective plate body 21 is located on one side of the cell assembly 1 and is connected to the tabs of all cell assemblies 1. The protective plate body 21 provides overvoltage and overcurrent protection, preventing explosions caused by transient current or voltage increases during charging, thereby improving charging safety.

[0070] The protective plate body 21 is positioned parallel to the short sides of the cell assembly 1. By reducing the length of the protective plate body 21, the battery length is reduced, thereby increasing the battery's capacity per unit volume. Furthermore, electronic components, such as nickel sheets, can be selectively placed at either end of the protective plate body 21. This invention eliminates the need for any notches in the protective plate body 21, simplifying its structural design and increasing space for electronic components. This reduces manufacturing complexity and reduces costs.

[0071] One of the flexible circuit boards is laid along the outer edge of the battery cell assembly 1 and is electrically connected to the protection board body 21; the remaining flexible circuit boards are laid along the protection board body 21 and are electrically connected to the protection board body 21; in the charging state, the current can flow directly from the main board or sub-board of the terminal device into the battery cell assembly 1, realizing dual power supply, improving the charging speed, and having good fast charging performance.

[0072] One of the flexible circuit boards is laid along the outer edge of the battery cell assembly 1, that is, the flexible circuit board connected to the sub-board is arranged sideways instead of being arranged across the surface of the battery cell assembly 1. The side placement of the flexible circuit board ensures that the flexible circuit board does not occupy the thickness of the battery. Under the condition that the battery installation space remains unchanged, there is no need to compress the battery thickness for the cross-setting of the flexible circuit board. The battery capacity increases with the increase of the battery thickness, and the loss of battery capacity is small, thereby achieving improved battery capacity.

[0073] In addition, the side-by-side arrangement of the flexible circuit board improves the current capacity of the battery protection board body 21, thereby improving the fast charging performance of the battery. It also eliminates the problem of limited activity space caused by the cross-setting of the flexible circuit board, and there is no need to face the problem of the flexible circuit board being squeezed between the battery cell assembly 1 and the battery compartment 31, thereby improving the connection reliability of the flexible circuit board between the battery cell assembly 1 and the terminal device.

[0074] As attached Figure 3 As shown, the protection plate assembly 2 also includes a sealing block 25, which is arranged parallel to the protection plate body 21. The sealing block 25 is formed by solidifying an insulating colloid and is used to wrap the protection plate body 21, the pole ears of the battery cell assembly 1 and at least part of the flexible circuit board (for example, the overlapping part of the flexible circuit board and the protection plate body 21), thereby improving the connection reliability between the battery cell assembly 1 and the flexible circuit board.

[0075] As attached Figures 7 to 9 As shown, the flexible circuit board includes a first flexible circuit board 22 laid along the outer edge of the battery cell assembly 1. The first flexible circuit board 22 is vertically connected to the protective plate body 21. The first flexible circuit board 22 and the protective plate body 21 are preferably welded together. The end of the first flexible circuit board 22 connected to the protective plate body 21 is integrally formed with an elastic compensation portion 221. In other words, the elastic compensation portion 221 is located at the connection between the first flexible circuit board 22 and the protective plate body 21. The elastic compensation portion 221 expands and contracts along the extension line of the protective plate body 21. When the first flexible circuit board 22 is pulled, the elastic compensation portion 221 compensates for the assembly error between the first flexible circuit board 22 and the device terminal by freely stretching or automatically contracting, thereby improving the connection reliability between the first flexible circuit board 22 and the device terminal's sub-board.

[0076] As a preferred embodiment, as shown in the attached Figure 8As shown, the elastic compensation portion 221 is a Z-shaped folding structure, which is formed by two U-shaped structures with opposite openings and different widths that are smoothly connected to avoid excessive stress at the bend and fatigue fracture, ensuring that the Z-shaped folding structure has good elasticity and service life. Of course, the structure of the elastic compensation portion 221 is not limited to this, for example, it can be a U-shaped structure, as shown in the attached Figure 17 shown.

[0077] As attached Figure 9 As shown, the natural length L of the Z-shaped folded structure is greater than 0.5 mm, that is, when injecting glue, sufficient space is left at one end of the battery cell assembly 1 for the Z-shaped folded structure to move, so that the Z-shaped folded structure has good elasticity.

[0078] The battery cell assembly 1 is a dual-cell structure. The utility model adopts a dual-cell structure with a side-mounted flexible circuit board, which enables the battery to have excellent high power and fast charging performance. Compared with the conventional dual-cell structure, the battery capacity is higher.

[0079] As attached Figure 4 and 5 As shown, the dual-cell structure includes a first cell 11 and a second cell 12 arranged side by side. Both the first cell 11 and the second cell 12 are rectangular structures. A first top seal 111 is formed on the top side of the first cell 11, a first side seal 112 is formed on the right side of the first cell 11, and a first bottom seal 113 is formed on the bottom side of the first cell 11. The first top seal 111, the first side seal 112, and the first bottom seal 113 are connected in sequence and are all formed by bending aluminum-plastic film.

[0080] An outward convex corner 13 is formed at the corner of the second top seal 121 and the second side seal 122; a first top seal 111 is formed on the top side of the first battery cell 11, and an inward concave corner 14 is formed on one end of the first top seal 111 facing the second battery cell 12; the outward convex corner 13 and the inward concave corner 14 are wedge-shaped matched to achieve an inlay effect, so that the two seals avoid each other at the top corners and do not interfere with each other, thereby reducing the middle bulge of the dual-cell structure and facilitating the arrangement of the protection plate body 21.

[0081] As attached Figure 6 As shown in the figure, as a preferred embodiment, the convex corner 13 is a right-angled triangle structure extending along the length of the second top sealing edge 121 and perpendicular to the second side sealing edge 122; the concave corner 14 is a right-angled triangle structure formed by folding the end of the first top sealing edge 111 from top to bottom. The inclined surfaces of the convex corner 13 and the concave corner 14 are parallel and abut each other to form a wedge-shaped fit. Of course, interchanging the positions of the convex corner 13 and the concave corner 14 does not affect the purpose of the present invention.

[0082] In addition, as attached Figure 5As shown, a forward convex corner 17 is formed at the corner of the first side seal 112 and the first top seal 111. The forward convex corner 17 is a hollow triangular prism structure with an open top side and a closed bottom side. It extends along the length direction of the first side seal 112 and is perpendicular to the first top seal 111.

[0083] A second top seal 121 is formed along the top side of the second battery cell 12, a second side seal 122 is formed along the right side of the second battery cell 12, and a second bottom seal 123 is formed along the bottom side of the second battery cell 12. The second top seal 121, the second side seal 122, and the second bottom seal 123 are sequentially connected and are all formed by bending an aluminum-plastic film.

[0084] At least one of the first bottom edge seal 113 and the second bottom edge seal 123 has an anti-wear bend 15 formed at its opposite end. The flexible circuit board passes around this bend 15. This protects the bend of the flexible circuit board from wear by the top corners of the battery cell assembly 1 during movement, thereby extending the service life of the flexible circuit board. In a preferred embodiment, the anti-wear bend 15 is located at one end of the second bottom edge seal 123. The anti-wear bend 15 can be, but is not limited to, an arc, a right-angled triangle, or a right-angled trapezoid.

[0085] In addition, the first side sealing edge 112 and the first bottom sealing edge 113 are formed with end corners 16 at their corners, as shown in the attached figure. Figure 11 As shown, the end angle 16 is a right-angled triangle structure that is perpendicular to the first side edge 112 and closely attached to the first bottom edge 113. One of the right-angled sides of the end angle 16 is flush with the end of the first side edge 112. Similarly, an end angle 16 is also formed at the corner between the second side edge 122 and the second bottom edge 123. The end angle 16 is a right-angled triangle structure that is perpendicular to the second side edge 122 and closely attached to the second bottom edge 123.

[0086] In the first specific embodiment, as shown in the attached Figure 2 and 3As shown, the battery cell assembly 1 has a dual-cell structure, comprising a first battery cell 11 and a second battery cell 12 arranged side by side. A flexible circuit board is provided at each end of the protective plate body 21. The flexible circuit boards include a first flexible circuit board 22 and a second flexible circuit board 23. The first flexible circuit board 22 is perpendicular to the first end of the protective plate body 21 and welded to the first end. The first flexible circuit board 22 is L-shaped and extends along the outer edge of the battery cell assembly 1. The first flexible circuit board 22 includes a long section extending along the long side of the first battery cell 11 and a short section extending along the short side of the first battery cell 11. The long and short sections are perpendicularly connected to form an L-shaped structure. The length of the long section is equal to the length of the long side of the first battery cell 11, while the length of the short section is less than the length of the short side of the first battery cell 11. The second flexible circuit board 23 is parallel to the second end of the protective plate body 21 and abuts against the side of the protective plate body 21 facing away from the battery cell assembly 1. The second flexible circuit board 23 is welded to the protective plate body 21.

[0087] In the first specific embodiment, the protection plate assembly 2 includes a protection plate body 21 and a first flexible circuit board 22 and a second flexible circuit board 23 respectively provided at both ends of the protection plate body 21. The expanded schematic diagram of the protection plate assembly 2 is shown in the attached figure. Figure 12 and 13 As shown, in the unfolded state, the first flexible circuit board 22 and the second flexible circuit board 23 are respectively arranged in parallel at two ends of the protection plate body 21.

[0088] In the first specific embodiment, the first flexible circuit board 22 has a stronger current carrying capacity and better fast charging performance.

[0089] In the second specific embodiment, as shown in the attached Figure 14 and 15 As shown, the battery cell assembly 1 has a dual-cell structure, with a flexible circuit board positioned at each end of the protective plate body 21. The flexible circuit boards include a first flexible circuit board 22 and a second flexible circuit board 23. The first flexible circuit board 22 is perpendicular to the first end of the protective plate body 21 and is welded to the first end. The first flexible circuit board 22 is linear and is laid along the outer edge of the battery cell assembly 1. The second flexible circuit board 23 is laid parallel to the second end of the protective plate body 21.

[0090] Compared with the first specific embodiment, the second specific embodiment is to change the structure of the first flexible circuit board 22 and the lead-out position of the first flexible circuit board 22 on the side of the battery cell assembly 1, so that the battery can meet different application scenarios. No matter where the battery interface of the terminal device is located on the battery, the present invention can meet the requirements and the battery has better adaptability.

[0091] In the third specific embodiment, as shown in the attached Figure 16 and 17As shown, the battery cell assembly 1 has a dual-cell structure. Three flexible circuit boards are provided on the protective plate body 21. The flexible circuit boards include a first flexible circuit board 22, a second flexible circuit board 23, and a third flexible circuit board 24. The first flexible circuit board 22 is vertically connected to one end of the protective plate body 21. The first flexible circuit board 22 is L-shaped and is laid along the outer edge of the battery cell assembly 1. The second flexible circuit board 23 and the third flexible circuit board 24 are respectively laid parallel to the two ends of the protective plate body 21. As a preferred embodiment, the first flexible circuit board 22 and the second flexible circuit board 23 are respectively connected to the first end of the protective plate body 21, and the two are respectively located on the front and rear sides of the protective plate body 21 to prevent structural interference. An elastic compensation portion 221 is formed on the side where the first flexible circuit board 22 is connected to the protective plate body 21. Its structure refers to the above content.

[0092] Compared with the first specific embodiment, the third specific embodiment is that the number of flexible circuit boards is increased from two to three, which is equivalent to dividing the first flexible circuit board 22 in the first specific embodiment into two parts, respectively connected to different sides of the protection board body 21, to avoid interference between the flexible circuit board laid along the outer edge of the battery cell assembly 1 and the protection board body 21, to meet the increased assembly scenarios and better adaptability; moreover, the number of flexible circuit boards is increased to three, which can further improve the fast charging performance of the battery without affecting the battery power and battery capacity.

[0093] In the fourth specific embodiment, as shown in the attached Figure 18 and 19 As shown, the battery cell assembly 1 has a dual-cell structure, and the protective plate body 21 is provided with three flexible circuit boards. The flexible circuit boards include a first flexible circuit board 22, a second flexible circuit board 23, and a third flexible circuit board 24. The first flexible circuit board 22 is vertically connected to the middle section of the protective plate body 21. The first flexible circuit board 22 is L-shaped and is laid between two adjacent cells of the battery cell assembly 1. Specifically, the first flexible circuit board 22 is laid between the first cell 11 and the second cell 12. The second flexible circuit board 23 and the third flexible circuit board 24 are laid parallel to the ends of the protective plate body 21.

[0094] Compared with the first specific embodiment, the fourth specific embodiment increases the number of flexible circuit boards and optimizes the laying method of the flexible circuit boards. The number of flexible circuit boards is increased from two to three, thereby improving the fast charging performance; and the flexible circuit boards are changed from a side-placed setting to a center-placed setting, which can still reduce the battery capacity loss and improve the battery capacity.

[0095] In the fifth specific embodiment, as shown in the attached Figure 20 and 21As shown, the battery cell assembly 1 is a single-cell structure, and a flexible circuit board is provided at each end of the protection plate body 21. The flexible circuit board includes a first flexible circuit board 22 vertically connected to the first end of the protection plate body 21 and a second flexible circuit board 23 parallel to the second end of the protection plate body 21; the first flexible circuit board 22 is L-shaped and is laid along the outer edge of the battery cell assembly 1. In the fifth specific embodiment, the protection plate assembly 2 includes a protection plate body 21 and a first flexible circuit board 22 and a second flexible circuit board 23 respectively provided at both ends of the protection plate body 21. The expanded schematic diagram of the protection plate assembly 2 is shown in the attached figure. Figure 22 As shown, in the unfolded state, the first flexible circuit board 22 is vertically connected to the protection plate body 21 , and the second flexible circuit board 23 is parallel to the protection plate body 21 .

[0096] Compared with the first specific embodiment, the fifth specific embodiment changes the structure of the battery cell assembly 1 from a dual-cell structure to a single-cell structure. The single-cell structure also has excellent battery capacity and fast charging performance, and the battery capacity is higher than the dual-cell structure in the first specific embodiment.

[0097] The outer edge of the single cell structure is formed with a U-shaped edge seal, which is formed by bending the aluminum plastic film. Figure 20 shown.

[0098] In the sixth specific embodiment, as shown in the attached Figure 23 and 24 As shown, the battery cell structure is a single-cell structure, and two flexible circuit boards are installed at one end of the protective plate body 21. The flexible circuit boards include a first flexible circuit board 22 and a second flexible circuit board 23, each connected to one end of the protective plate body 21. The first flexible circuit board 22 is perpendicular to the protective plate body 21, is linear, and is laid along the outer edge of the battery cell assembly 1; the second flexible circuit board 23 is laid parallel to the protective plate body 21.

[0099] Compared with the first specific embodiment, the sixth specific embodiment changes the connection method between each flexible circuit board and the protection board body 21. Each flexible circuit board is concentrated at one end of the protection board body 21, which is suitable for a more compact battery interface on the terminal device, increases the adaptability of the scenarios, and is more adaptable.

[0100] In the seventh specific embodiment, the battery cell assembly 1 is a single-cell structure, and all flexible circuit boards are designed in an integrated manner. Figure 25 and 26As shown, the flexible circuit board includes a first flexible circuit board 22, a second flexible circuit board 23, and a third flexible circuit board 24, which are integrally connected. The second flexible circuit board 23 and the third flexible circuit board 24 are integrally connected and parallel to each other. They are respectively laid parallel to the ends of the protective plate body 21. The first flexible circuit board 22 and the second flexible circuit board 23 are integrally connected vertically, and the first flexible circuit board 22 is laid along the outer edge of the battery cell assembly 1.

[0101] Compared with the first specific embodiment, the seventh specific embodiment changes the connection method of each flexible circuit board from a split type to an integrated type, which makes assembly more convenient and time-saving, thereby improving assembly efficiency and reducing costs.

[0102] Of course, the battery cell assembly 1 in the sixth and seventh specific embodiments can be replaced with a dual-cell structure without affecting the purpose of the present utility model.

[0103] The flexible circuit board is attached with a fixing tape 4. Figure 27 As shown in the figure, during the assembly process, the assembly process of the flexible circuit board is optimized, and the assembly quality and assembly efficiency are both high. It should be noted that the part in contact with the flexible circuit board is not coated with glue, forming a glue-free area to avoid affecting the movement of the flexible circuit board.

[0104] The present invention also discloses a device terminal, including a device housing 3 and the battery. Figure 28 and 29 As shown, the device housing 3 has a battery compartment 31, and the battery is installed in the battery compartment 31. The end corner 16 of the battery core assembly 1 away from the protection plate body 21 is abutted against the side wall of the battery compartment 31, limiting the position of the battery in the battery compartment 31. Figure 29 As shown, the distance between the battery cell assembly 1 and the battery compartment 31 is between 0.2 and 1 mm, leaving room for the flexible circuit board to move within the battery compartment 31. The end bend 16 creates a space within the battery compartment 31 for the flexible circuit board to move, preventing the end of the flexible circuit board away from the protective plate body 21 from being pinched by the battery cell assembly 1 and the side wall of the battery compartment 31, thereby improving the reliability of the connection between the flexible circuit board and the device terminal.

[0105] 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.

[0106] 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: It comprises a battery cell assembly (1) and a protection plate assembly (2), wherein the protection plate assembly (2) comprises: A protection plate body (21), the protection plate body (21) being arranged on one side of the battery core assembly (1); A flexible circuit board, comprising at least two pieces; one of the flexible circuit boards is laid along the outer edge of the battery cell assembly (1) and electrically connected to the protection board body (21); and the remaining flexible circuit boards are laid along the protection board body (21) and electrically connected to the protection board body (21).

2. The battery according to claim 1, characterized in that The flexible circuit board comprises a first flexible circuit board (22) laid along the outer edge of the battery cell assembly (1), the first flexible circuit board (22) being vertically connected to the protection board body (21); an elastic compensation portion (221) is integrally formed on one end of the first flexible circuit board (22) connected to the protection board body (21), and the elastic compensation portion (221) is retractable along an extension line of the protection board body (21).

3. The battery according to claim 2, characterized in that The elastic compensation portion (221) is a Z-shaped folding structure, and the natural length of the Z-shaped folding structure is greater than 0.5 mm.

4. The battery according to any one of claims 1 to 3, characterized in that The battery cell assembly (1) is a dual-cell structure, comprising a first battery cell (11) and a second battery cell (12) arranged side by side.

5. The battery according to claim 4, characterized in that A second top seal (121) is formed on the top side edge of the second battery cell (12), a second side seal (122) is formed on the right side edge of the second battery cell (12), and an outward convex folded corner (13) is formed at the corner of the second top seal (121) and the second side seal (122); a first top seal (111) is formed on the top side edge of the first battery cell (11), and an inward concave folded corner (14) is formed toward one end of the first top seal (111) of the second battery cell (12); the outward convex folded corner (13) and the inward concave folded corner (14) are wedge-shaped.

6. The battery according to claim 5, characterized in that The convex folding angle (13) is a right-angled triangular structure extending along the length direction of the second top sealing edge (121) and perpendicular to the second side sealing edge (122); the concave folding angle (14) is a right-angled triangular structure formed by folding the end of the first top sealing edge (111) obliquely from top to bottom; the inclined surfaces of the convex folding angle (13) and the concave folding angle (14) are parallel and abut against each other to form a wedge-shaped fit.

7. The battery according to claim 5, characterized in that A first bottom sealing edge (113) is formed on the bottom side of the first battery cell (11), and a second bottom sealing edge (123) is formed on the bottom side of the second battery cell (12); an anti-wear fold (15) is formed at the opposite end of at least one of the first bottom sealing edge (113) and the second bottom sealing edge (123), and the flexible circuit board bypasses the anti-wear fold (15).

8. The battery according to claim 7, characterized in that The anti-wear folded corner (15) is an arc structure, a right-angled triangle structure or a right-angled trapezoidal structure.

9. The battery according to any one of claims 1 to 3, characterized in that The flexible circuit board comprises a first flexible circuit board (22) vertically connected to the first end of the protection board body (21) and a second flexible circuit board (23) parallel to the second end of the protection board body (21); the first flexible circuit board (22) is L-shaped and is laid along the outer edge of the battery cell assembly (1).

10. The battery according to any one of claims 1 to 3, characterized in that The flexible circuit board comprises a first flexible circuit board (22) vertically connected to the first end of the protection board body (21) and a second flexible circuit board (23) parallel to the second end of the protection board body (21); the first flexible circuit board (22) is linear and is laid along the outer edge of the battery cell assembly (1).

11. The battery according to any one of claims 1 to 3, characterized in that The flexible circuit board comprises a first flexible circuit board (22) vertically connected to one end of the protection board body (21), and a second flexible circuit board (23) and a third flexible circuit board (24) respectively laid parallel to the two ends of the protection board body (21); the first flexible circuit board (22) is L-shaped and laid along the outer edge of the battery cell assembly (1).

12. The battery according to any one of claims 1 to 3, characterized in that The flexible circuit board comprises a first flexible circuit board (22) vertically connected to the middle section of the protection board body (21), and a second flexible circuit board (23) and a third flexible circuit board (24) respectively and parallelly laid on two ends of the protection board body (21); the first flexible circuit board (22) is L-shaped and laid between two adjacent battery cells of the battery cell assembly (1).

13. The battery according to any one of claims 1 to 3, characterized in that The flexible circuit board comprises a first flexible circuit board (22) and a second flexible circuit board (23) respectively connected to one end of the protection board body (21); the first flexible circuit board (22) is perpendicular to the protection board body (21), the first flexible circuit board (22) is linear and is laid along the outer edge of the battery cell assembly (1); the second flexible circuit board (23) is laid parallel to the protection board body (21).

14. The battery according to any one of claims 1 to 3, characterized in that The flexible circuit board comprises a first flexible circuit board (22), a second flexible circuit board (23) and a third flexible circuit board (24) which are connected in an integral manner; the second flexible circuit board (23) and the third flexible circuit board (24) are connected in parallel in an integral manner and are laid on both ends of the protective plate body (21); the first flexible circuit board (22) and the second flexible circuit board (23) are connected in an integral manner vertically; and the first flexible circuit board (22) is laid along the outer edge of the battery cell assembly (1).

15. The battery according to any one of claims 1 to 3, characterized in that The battery core assembly (1) is a single-cell structure, and a U-shaped sealing edge is formed on the outer edge of the single-cell structure.

16. The battery according to any one of claims 1 to 3, characterized in that The protection plate assembly (2) further comprises: A sealing block (25), the sealing block (25) is arranged parallel to the protection plate body (21), and the sealing block (25) is used to wrap the protection plate body (21), the tabs of the battery cell assembly (1) and at least a portion of the flexible circuit board.

17. A device terminal, characterized in that: The device comprises a device housing (3) and a battery according to any one of claims 1 to 16, wherein the device housing (3) has a battery compartment (31), and the battery is installed in the battery compartment (31).

18. The device terminal according to claim 17, characterized in that: The distance between the battery core assembly (1) and the battery compartment (31) is between 0.2 and 1 mm.

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