Batteries and electronic terminals

Abstract

The utility model discloses a battery and an electronic terminal. The battery includes at least two battery cell bodies arranged in parallel, the battery cell body has a top seal edge bent toward its top wall surface and a side seal edge bent toward its side wall surface, and the intersection of the top seal edge and the side seal edge forms a folded angle protruding from the top wall surface; a protective plate, the protective plate includes a flexible circuit board, the flexible circuit board is arranged on the side of the top seal edge away from the top wall surface, and the board surface of the flexible circuit board is arranged opposite to the side of the top seal edge; the flexible circuit board includes a straight section arranged corresponding to each battery cell body and an avoidance section connected between adjacent straight sections, the avoidance section protrudes in the direction away from the battery cell body to form an avoidance cavity for accommodating the folded angle at the position of the adjacent folded angle. In this way, the effective space of the battery cell body can be increased, so that the energy density of the battery is improved.

Description

Technical Field

[0001] The utility model belongs to the field of batteries, and specifically relates to a battery and an electronic terminal. Background Art

[0002] With the development of science and technology, the functions of electronic terminals are becoming more and more abundant, the performance is getting higher and higher, and the requirements for battery capacity and charging and discharging capabilities are also increasing accordingly. For example, dual-cell or multi-cell batteries are becoming more and more widely used, such as using batteries in foldable screen mobile phones to increase the energy density of batteries.

[0003] However, in the process of battery production, when the side seal of the battery cell is bent toward the side wall and fits with the side wall, the part where the side seal is connected to the top seal protrudes from the top wall of the battery cell. As a result, there is a side seal protrusion at the splicing position of the battery cells, which makes the side seal protrusion occupy the space on the top of the battery cell, thereby affecting the assembly of the battery protection plate. If the overall installation position is raised to avoid the aforementioned side seal protrusion, the effective utilization space of the battery cell will be greatly compressed, and the energy density of the battery cannot be improved. Utility Model Content

[0004] The purpose of the embodiments of the utility model is to provide a battery and an electronic terminal, which at least solve the problem that the energy density of the battery is low after the battery is packaged.

[0005] In a first aspect, an embodiment of the utility model provides a battery, the battery comprising:

[0006] At least two battery cell bodies arranged in parallel, each of the battery cell bodies having a top sealing edge bent toward its top wall surface and a side sealing edge bent toward its side wall surface, wherein the intersection of the top sealing edge and the side sealing edge forms a folded angle protruding from the top wall surface;

[0007] A protection plate, the protection plate comprising a flexible circuit board, the flexible circuit board being arranged on a side of the top sealing edge away from the top wall surface, and a plate surface of the flexible circuit board being arranged opposite to the side surface of the top sealing edge;

[0008] The flexible circuit board includes straight sections corresponding to the respective battery cell bodies and avoidance sections connected between adjacent straight sections, wherein the avoidance sections protrude in a direction away from the battery cell body to form avoidance cavities for accommodating the folded corners at adjacent locations of the folded corners.

[0009] Optionally, the protection plate also includes a circuit board stacked on the straight section, one circuit board is arranged corresponding to each straight section, and the orthographic projection of the circuit board and the orthographic projection of the straight section at least partially overlap, and the corner and the avoidance section are located between two adjacent circuit boards.

[0010] Optionally, the battery has a first direction and a second direction intersecting each other, the avoidance section has a first side plate and a second side plate opposite to each other along the first direction, and a top plate located in the second direction, and the first side plate and the second side plate are connected through the top plate;

[0011] An electronic component is arranged on a surface of the circuit board away from the flexible circuit board, and a distance between the electronic component and the top wall in the second direction is greater than a distance between the top plate and the top wall in the second direction, wherein the first direction is an extension direction of the flexible circuit board.

[0012] Optionally, a dimension of the straight section in the second direction is smaller than a dimension of the top plate in the second direction.

[0013] Optionally, a dimension of the top plate in the second direction is D1, and a dimension of the straight section in the second direction is D2, wherein 0.3≤D1≤0.5, and 0.18≤D2≤0.29.

[0014] Optionally, the battery further comprises an injection molded part;

[0015] The injection molded part covers the protection plate, the top edge seal and the folded corner.

[0016] Optionally, the battery has a second direction, and the flexible circuit board has a first surface and a second surface opposite to each other along the second direction;

[0017] The circuit board is arranged on the first surface, a connecting piece is arranged on the second surface, and the tabs included in the battery body are electrically connected to the connecting piece.

[0018] Optionally, a groove is provided on the surface of the circuit board away from the flexible circuit board, and an electronic component is embedded in the groove.

[0019] Optionally, the battery further includes an easy-to-tear sticker and a handle;

[0020] The easy-to-tear sticker covers at least three surfaces of the battery cell body at the same time;

[0021] The portion of the easy-to-tear sticker on the battery body has a notch, and a handle is arranged in the notch.

[0022] In a second aspect, an embodiment of the present utility model provides an electronic terminal, wherein the electronic terminal comprises the battery described in any one of the above-mentioned first aspects.

[0023] In the embodiment of the utility model, since the flexible circuit board is arranged on the side of the top sealing edge away from the top wall surface, and the board surface of the flexible circuit board is arranged opposite to the side of the top sealing edge, the flexible circuit board includes a straight section arranged corresponding to each battery body and an avoidance section connected between adjacent straight sections, and the avoidance section protrudes in the direction away from the battery body to form an avoidance cavity for accommodating the corner at the position of the adjacent corner. Therefore, when packaging the battery, for batteries of the same size, the corner and the protection plate can jointly occupy the space above the top wall surface, thereby reducing the influence of the corner on the assembly of the protection plate, so that the effective space of the battery body is increased. That is, in the embodiment of the utility model, the corner can be adapted to the protection plate arranged on the top wall surface, and the installation position of the protection plate will not be raised due to the corner. For batteries of the same size, the effective space of the battery body can be increased, so that the energy density of the battery is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram showing an exploded structure of a battery provided by an embodiment of the utility model;

[0026] Figure 2 A schematic diagram showing a partial structure of a battery provided by an embodiment of the utility model;

[0027] Figure 3 Indicates that a battery provided by the embodiment of the utility model Figure 2 A local enlarged schematic diagram of the middle A;

[0028] Figure 4 A schematic diagram showing the structure of a protection plate included in a battery provided by an embodiment of the utility model;

[0029] Figure 5 A schematic diagram showing the dimensions of a protection plate included in a battery provided in an embodiment of the utility model;

[0030] Figure 6 A schematic structural diagram of a battery cell body provided in an embodiment of the utility model is shown.

[0031] Reference numerals:

[0032] 1: battery cell body; 2: top sealing edge; 3: side sealing edge; 4: folded corner; 5: protection plate; 6: easy-tear sticker; 7: handle; 8: injection molded part; 11: top wall; 12: side wall; 51: flexible circuit board; 52: circuit board; 53: electronic component; 511: straight section; 512: avoidance section; 513: avoidance cavity; 521: connecting piece; 5121: first side panel; 5122: second side panel; 5123: top panel. DETAILED DESCRIPTION

[0033] The term "first" or "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figures 1 to 6 As shown, the battery comprises: at least two battery cell bodies 1 arranged in parallel, the battery cell body 1 having a top sealing edge 2 bent toward its top wall surface 11 and a side sealing edge 3 bent toward its side wall surface 12, and the intersection of the top sealing edge 1 and the side sealing edge 3 forms a folded corner 4 protruding from the top wall surface 11;

[0037] The protection plate 5 includes a flexible circuit board 51, and the flexible circuit board 51 is arranged on the side of the top sealing edge 1 away from the top wall surface 11, and the board surface of the flexible circuit board 51 is arranged opposite to the side of the top sealing edge 1;

[0038] The flexible circuit board 51 includes a straight section 511 corresponding to each battery cell body 1 and an avoidance section 512 connected between adjacent straight sections 511. The avoidance section 512 protrudes away from the battery cell body 1 to form an avoidance cavity 513 for accommodating the bend 4 at the position of the adjacent bend 4.

[0039] In the embodiment of the utility model, since the flexible circuit board 51 is arranged on the side of the top sealing edge 1 away from the top wall surface 11, and the board surface of the flexible circuit board 51 is arranged opposite to the side of the top sealing edge 1, the flexible circuit board 51 includes a straight section 511 corresponding to each battery body 1 and an avoidance section 512 connected between adjacent straight sections 511, and the avoidance section 512 protrudes in the direction away from the battery body 1 to form an avoidance cavity 513 for accommodating the bend 4 at the position where the adjacent bend 4 is located. Therefore, when packaging the battery, for batteries of the same size, the bend 4 and the protection plate 5 can jointly occupy the space above the top wall surface 11, thereby reducing the influence of the bend 4 on the assembly of the protection plate 5, so that the effective space of the battery body 1 is increased. That is, in the embodiment of the utility model, the bend 4 can be adapted to the protection plate 5 arranged on the top wall surface 11, and the installation position of the protection plate 5 will not be raised due to the bend 4. For batteries of the same size, the effective space of the battery body 1 can be increased, so that the energy density of the battery is improved.

[0040] Among them, in the embodiment of the utility model, the battery body 1 can be a cylindrical structure, a rectangular structure, or other shapes. The battery can include two battery bodies 1 or multiple battery bodies 1, and the embodiment of the utility model does not limit this. Usually, it is necessary to seal the top wall surface 11 of the battery body 1 to form a top sealing edge 2, and to seal the side wall surface 12 of the battery body 1 to form a side sealing edge 3. The intersection of the top sealing edge 2 and the side sealing edge 3 forms interference, so that the intersection of the top sealing edge 2 and the side sealing edge 3 convexly extends to the corner 4 away from the top wall surface 11.

[0041] In order to avoid the interference of the corner 4 on the installation of the flexible circuit board 51, in the embodiment of the utility model, the middle part of the flexible circuit board 51 is bent to form an avoidance section 512 to avoid the corner 4. Specifically, the avoidance section 512 protrudes in the direction away from the battery body 1, that is, the avoidance section 512 protrudes in the direction from the top wall surface 11 to the top sealing edge 2. In this way, an avoidance cavity 513 is formed between the top wall surface 11, the top wall surface 11 and the avoidance section 512, and then a space that can be avoided can be formed for the corner 4. It should be noted that the avoidance section 512 can be a U-shaped structure, a V-shaped structure, or other shapes, and the embodiment of the utility model is not limited to this.

[0042] In addition, it should be noted that a circuit board 52 can be set on the straight section 511 of the flexible circuit board 51, and a protection circuit can be formed on the circuit board 52 by connecting and combining with the electronic components 53. The electronic components 53 can also be mounted on a bracket on the flexible circuit board 51 to form a protection circuit. The embodiments of the present utility model are not limited to this.

[0043] Exemplarily, in some embodiments, the protection plate 5 also includes a circuit board 52 stacked on the straight section 511, one circuit board 52 is arranged corresponding to each straight section 511, and the orthographic projection of the circuit board 52 and the orthographic projection of the straight section 511 at least partially overlap, and the corner 4 and the avoidance section 512 are located between two adjacent circuit boards 52.

[0044] In this embodiment, multiple circuit boards 52 can be soldered on the flexible circuit board 51 by reflow soldering, that is, the circuit boards 52 are arranged on the flexible circuit board 51 in a segmented form. Since the protection plate 5 also includes a circuit board 52 stacked on the straight section 511, each straight section 511 is provided with a circuit board 52, and the orthographic projection of the circuit board 52 and the orthographic projection of the straight section 511 overlap at least partially, and the corner 4 and the avoidance section 512 are located between two adjacent circuit boards 52, the circuit board 52 can be installed on the flexible circuit board 51 avoiding the avoidance section 512 and the corner 4. In other words, the avoidance section 512 and the corner 4 will not affect the arrangement of the multiple circuit boards 52 on the flexible circuit board 51, and the circuit board 52 can be stacked on the straight section 511, and the size of the circuit board 52 in the direction from the top wall surface 11 to the top sealing edge 2 will not be increased due to the avoidance section 512 and the corner 4.

[0045] Furthermore, the battery has an intersecting first direction (X) and a second direction (Z), the avoidance section 512 has a first side plate 5121 and a second side plate 5122 relative to each other along the first direction (X), and a top plate 5123 located in the second direction (Z), and the first side plate 5121 and the second side plate 5122 are connected by the top plate 5123; the surface of the circuit board 52 away from the flexible circuit board 51 is provided with an electronic component 53, and the distance between the electronic component 53 and the top wall surface 11 in the second direction (Z) is greater than the distance between the top plate 5123 and the top wall surface 11 in the second direction (Z).

[0046] In this embodiment, since the avoidance section 512 has a first side plate 5121 and a second side plate 5122 opposite to each other along the first direction (X), and a top plate 5123 located in the second direction (Z), the first side plate 5121 and the second side plate 5122 are connected by the top plate 5123, so that a U-shaped frame structure is formed between the first side plate 5121, the second side plate 5122 and the top plate 5123, thereby ensuring that the avoidance section 512 forms an avoidance cavity 513 of a stable size. In addition, since the surface of the circuit board 52 away from the flexible circuit board 51 is provided with an electronic component 53, the distance between the electronic component 53 and the top wall surface 11 in the second direction (Z) is greater than the distance between the top plate 5123 and the top wall surface 11 in the second direction (Z), so that the top plate 5123 will not exceed the top surface of the electronic component 53 in the second direction (Z). In other words, the arrangement of the avoidance section 512 will not increase the size of the battery in the second direction (Z), which is more conducive to improving the energy density of the battery.

[0047] It should also be noted that according to Figure 1 and Figure 3 As shown, in the embodiment of the utility model, the X-axis direction and the Z-axis direction intersect, and for the convenience of explanation, the first direction is defined as the X-axis direction, and the second direction is defined as the Z-axis direction. Further explanation, the definition of vertical in the specification should be understood as vertical within a 10% fluctuation of 90 degrees, that is, the angle between the defined first direction and the second direction should be understood as vertical if it is between 80 degrees and 90 degrees.

[0048] Based on the above embodiments, in some embodiments, the portion of the flexible circuit board 51 other than the avoidance section 512 is a straight section 511; that is, the straight section 511 is arranged correspondingly to each battery cell body 1. The size of the straight section 511 in the second direction (Z) is smaller than the size of the top plate 5123 in the second direction (Z). In this way, since the size of the straight section 511 in the second direction (Z) is smaller than the size of the top plate 5123 in the second direction (Z), not only can the size space occupied by the straight section 511 in the second direction (Z) be reduced, but also the overall strength of the avoidance section 512 can be increased through the top plate 5123, thereby ensuring that the size space occupied by the protective plate 5 in the second direction (Z) is reduced without reducing the overall strength of the protective plate 5. In addition, it should be noted that the thickness of the first side panel 5121 (the dimension of the first side panel 5121 in the first direction X) and the thickness of the second side panel 5122 (the dimension of the second side panel 5122 in the first direction X) can also be made greater than the dimension of the straight section 511 in the second direction (Z), thereby further enhancing the overall strength of the avoidance section 512.

[0049] Optionally, the size of the top plate 5123 in the second direction (Z) is D1, and the size of the straight section 511 in the second direction (Z) is D2, wherein 0.3≤D1≤0.5, 0.18≤D2≤0.29. In this way, it can be ensured that the size of the straight section 511 in the second direction (Z) is always smaller than the size of the top plate 5123 in the second direction (Z).

[0050] In addition, regarding the structure of the battery, in some embodiments, the battery further includes an injection molded part 8; the injection molded part 8 covers the protection plate 5, the top sealing edge 2 and the folded corner 4. In this way, the protection plate 5, the top sealing edge 2 and the folded corner 4 can all be protected by the injection molded part to increase the life of the battery.

[0051] In addition, in the embodiment of the utility model, the battery may further include adhesive tape, which is attached to the outer surface of the injection molded part 8 .

[0052] In addition, in some embodiments, the battery has a second direction (Z), and the flexible circuit board 51 has a first surface and a second surface opposite to each other along the second direction (Z); the circuit board 52 is arranged on the first surface, and a connecting piece 521 is arranged on the second surface, and the tabs included in the battery body 1 are electrically connected to the connecting piece 521. In this way, multiple circuit boards 52 can be arranged on the same plane, and the connecting piece 521 and the circuit board 52 can be arranged on different planes, which can increase the connection area of ​​the connecting piece 521 while facilitating electrical connection with the tabs.

[0053] In addition, in some embodiments, a groove is provided on the surface of the circuit board 52 away from the flexible circuit board 51 , and the electronic component 53 is embedded in the groove.

[0054] It should be noted that the electronic component 53 may include devices such as fuses, MOS tubes, comparators, capacitors, etc. Since the electronic component 53 is embedded in the groove, when the battery is packaged, the size of the battery occupied by the electronic component 53 is smaller in the direction from the top wall surface 11 to the top sealing edge 2, that is, when the battery is packaged, the size occupied by the electronic component 53 is smaller, so for batteries of the same size, the size of the battery body 1 can be increased, thereby improving the energy density of the battery. That is, by providing a groove on the surface of the circuit board 52 away from the flexible circuit board 51, it is equivalent to that the groove can avoid the electronic component 53, so that the size of the battery occupied by the electronic component 53 is reduced, and the size of the battery body 1 can be increased, thereby increasing the energy density of the battery.

[0055] Optionally, in some embodiments, the battery further includes a tear-off sticker 6 and a handle 7; the tear-off sticker 6 simultaneously covers at least three surfaces of the battery cell body 1; the portion of the tear-off sticker 6 on the battery cell body 1 has at least one notch, and a handle 7 is provided in the notch.

[0056] It should be noted that, in this embodiment, the tear-off sticker 6 not only has the function of fixing and insulating, but also because the portion of the tear-off sticker 6 on the battery body 1 has at least one notch, and a handle 7 is provided in the notch, the battery can be removed by the handle 7, which is convenient for the later disassembly and assembly of the battery.

[0057] In the embodiment of the utility model, since the flexible circuit board 51 is arranged on the side of the top sealing edge 1 away from the top wall surface 11, and the board surface of the flexible circuit board 51 is arranged opposite to the side of the top sealing edge 1, the flexible circuit board 51 includes a straight section 511 corresponding to each battery body 1 and an avoidance section 512 connected between adjacent straight sections 511, and the avoidance section 512 protrudes in the direction away from the battery body 1 to form an avoidance cavity 513 for accommodating the bend 4 at the position where the adjacent bend 4 is located. Therefore, when packaging the battery, for batteries of the same size, the bend 4 and the protection plate 5 can jointly occupy the space above the top wall surface 11, thereby reducing the influence of the bend 4 on the assembly of the protection plate 5, so that the effective space of the battery body 1 is increased. That is, in the embodiment of the utility model, the bend 4 can be adapted to the protection plate 5 arranged on the top wall surface 11, and the installation position of the protection plate 5 will not be raised due to the bend 4. For batteries of the same size, the effective space of the battery body 1 can be increased, so that the energy density of the battery is improved.

[0058] The embodiment of the utility model provides an electronic terminal, which includes the battery in any of the above embodiments. The beneficial effects of the electronic terminal are consistent with the beneficial effects of the battery in the above embodiments, and the embodiment of the utility model will not be repeated.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery, characterized in that: The battery comprises: At least two battery cell bodies arranged in parallel, each of the battery cell bodies having a top sealing edge bent toward its top wall surface and a side sealing edge bent toward its side wall surface, wherein the intersection of the top sealing edge and the side sealing edge forms a folded angle protruding from the top wall surface; A protection plate, the protection plate comprising a flexible circuit board, the flexible circuit board being arranged on a side of the top sealing edge away from the top wall surface, and a plate surface of the flexible circuit board being arranged opposite to the side surface of the top sealing edge; The flexible circuit board includes straight sections corresponding to the respective battery cell bodies and avoidance sections connected between adjacent straight sections, wherein the avoidance sections protrude in a direction away from the battery cell body to form avoidance cavities for accommodating the folded corners at adjacent locations of the folded corners.

2. The battery according to claim 1, characterized in that The protection plate also includes a circuit board stacked on the straight section, one circuit board is correspondingly arranged for each straight section, and the orthographic projection of the circuit board and the orthographic projection of the straight section at least partially overlap, and the corner and the avoidance section are located between two adjacent circuit boards.

3. The battery according to claim 2, characterized in that The battery has a first direction and a second direction intersecting each other, the avoidance section has a first side plate and a second side plate opposite to each other along the first direction, and a top plate located in the second direction, the first side plate and the second side plate being connected through the top plate; An electronic component is arranged on a surface of the circuit board away from the flexible circuit board, and a distance between the electronic component and the top wall in the second direction is greater than a distance between the top plate and the top wall in the second direction, wherein the first direction is an extension direction of the flexible circuit board.

4. The battery according to claim 3, characterized in that A dimension of the straight section in the second direction is smaller than a dimension of the top plate in the second direction.

5. The battery according to claim 4, characterized in that The size of the top plate in the second direction is D1, and the size of the straight section in the second direction is D2, wherein 0.3≤D1≤0.5, 0.18≤D2≤0.

29.

6. The battery according to claim 2, characterized in that The battery also includes an injection molded part; The injection molded part covers the protection plate, the top edge seal and the folded corner.

7. The battery according to claim 2, characterized in that The battery has a second direction, and the flexible circuit board has a first surface and a second surface opposite to each other along the second direction; The circuit board is arranged on the first surface, a connecting piece is arranged on the second surface, and the tabs included in the battery body are electrically connected to the connecting piece.

8. The battery according to claim 2, characterized in that A groove is arranged on the surface of the circuit board away from the flexible circuit board, and an electronic component is embedded in the groove.

9. The battery according to claim 1, characterized in that The battery also includes an easy-to-tear sticker and a handle; The easy-to-tear sticker covers at least three surfaces of the battery cell body at the same time; The portion of the easy-to-tear sticker on the battery body has a notch, and a handle is arranged in the notch.

10. An electronic terminal, characterized in that: The electronic terminal comprises the battery according to any one of claims 1 to 9.

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