Circuit board, battery and terminal device

Abstract

The utility model relates to battery technical field discloses circuit board, battery and terminal equipment, and circuit board includes: board body, first connecting assembly and second connecting assembly, board body includes main body and staggered arrangement at least one first extension and second extension of main body, first extension and second extension are arranged in any one side of main body respectively, and first extension and second extension can all fold towards main body, first connecting assembly sets up in first extension, second connecting assembly sets up in second extension, the utility model adopts the extension of board body to bear first connecting assembly and second connecting assembly, can spare more cloth piece arrangement space for main body, in addition, since first extension and second extension can fold towards main body and staggered arrangement, both can avoid the interference of extension when folding, simultaneously also can avoid the circuit of first connecting assembly and second connecting assembly on the same plane forms the overlap.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to circuit boards, batteries, and terminal devices. Background Technology

[0002] The dual-cell solution in tablet technology refers to a design that uses two battery cells to power a tablet device. This design increases the total battery capacity without significantly increasing the device's thickness and weight, thereby extending its battery life. Furthermore, the dual-cell solution improves charging efficiency and safety, and compared to a single large-capacity battery, it offers better heat dissipation and is easier to design for thermal management.

[0003] Currently, in existing dual-cell battery solutions, the two cells are typically electrically connected to external components via a single circuit board. To achieve this connection, the circuit board usually has nickel plates for connecting to the cell tabs and solder pads for connecting to external flexible circuit boards. In existing circuit board structures, the nickel plates and solder pads are usually placed directly on the circuit board. This arrangement of nickel plates and solder pads occupies a significant amount of space on the circuit board. Due to the limited remaining space on the circuit board, it becomes difficult to arrange the remaining electronic components. Utility Model Content

[0004] In view of this, the present invention provides a circuit board, a battery and a terminal device to solve the problem that insufficient space on the circuit board of existing circuit boards makes it difficult to arrange components.

[0005] In a first aspect, the present invention provides a circuit board having intersecting first and second directions. The circuit board includes: a board body, a first connecting component, and a second connecting component. The board body includes a main body and at least one first extension and a second extension disposed offset from the main body along the first direction. The main body extends along the first direction, and the first extension and the second extension are respectively disposed on either side of the main body along the second direction, and both the first extension and the second extension can be folded toward the main body. The first connecting component is disposed on the first extension and is used to connect with the tab assembly of the battery cell assembly. The second connecting component is disposed on the second extension and is used to electrically connect with an external device.

[0006] Beneficial effects: By setting a first extension and a second extension on the main body of the board, and using the extension of the board to support the first and second connecting components, the connecting components are avoided from occupying too much space on the main body, which can save more space for component arrangement. In addition, since the first and second extensions can be folded toward the main body and are staggered, interference can be avoided when the extensions are folded, and the lines of the first and second connecting components can also be avoided from overlapping on the same surface, reducing the local heat generation problem of the board. This effectively solves the problem of insufficient space on the circuit board of existing circuit boards, which makes it difficult to arrange components.

[0007] In one alternative embodiment, multiple first extensions are spaced apart along a first direction; along a second direction, multiple first extensions are connected to the same side of the plate, and second extensions are connected to the other side of the plate.

[0008] Beneficial effects: This arrangement of the extension makes it easier for the electrode tabs of the battery cell assembly to connect with the corresponding extension. At the same time, it can also avoid interference between the position of the second extension and the battery cell assembly, and the structure is simple and reliable.

[0009] In one optional embodiment, the main body includes a plurality of first main body portions and second main body portions connected along a first direction, a first extension portion connected to a first main body portion, a second extension portion connected to a second main body portion, and the second main body portion disposed between the two first main body portions.

[0010] Beneficial effects: In this arrangement, since the first connecting component is located on both sides of the second connecting component, and the connection paths of the first and second connecting components both extend from both sides to the second connecting component, the phenomenon of circuit overlap can be effectively avoided. At the same time, the arrangement of connecting components on both sides can also reduce the length of the circuit, thereby reducing the internal resistance of the circuit. When the battery is working, it can not only make the overall heat of the circuit board more uniform, but also reduce the overall heat generation.

[0011] In one alternative embodiment, the portion where the first extension connects to the first main body is a flexible member; and / or, the portion where the second extension connects to the second main body is a flexible member.

[0012] Beneficial effects: This type of bent and folded extension can effectively reduce the space occupied by the circuit board in the second direction Y, making the overall structure of the circuit board more compact. The connecting parts are flexible, which is not only less likely to be damaged by repeated bending, but also makes it easy to adjust the position of the extension after bending.

[0013] In one alternative embodiment, the second connection component includes a pad and a flexible plate disposed on the second extension, one end of the flexible plate being connected to the pad, and the other end of the flexible plate being provided with a connector for electrical connection with an external device.

[0014] Beneficial effects: The second connecting component has a simple and reliable structure. The flexible plate itself can be adjusted in length and can be bent, which can effectively improve the distance and flexibility when connecting the second connecting components.

[0015] In one optional embodiment, the first connecting component includes a first nickel sheet and a second nickel sheet, a plurality of first nickel sheets are disposed at intervals on one first extension, and a plurality of second nickel sheets are disposed at intervals on another first extension.

[0016] Beneficial effects: This type of connection component allows the circuit board to be effectively adapted to battery cells with four or more tabs, thus expanding the applicability of the circuit board.

[0017] Secondly, the present invention also provides a battery comprising: a cell assembly and the aforementioned circuit board; the cell assembly having a tab assembly, the tab assembly being electrically connected to a first connection assembly of the circuit board.

[0018] In one optional embodiment, the electrode assembly includes a first electrode assembly and a second electrode assembly. The first electrode assembly includes a first positive electrode and a first negative electrode, and the second electrode assembly includes a second positive electrode and a second negative electrode. The first connecting assembly includes two first nickel plates and two second nickel plates. Two first nickel plates are disposed on one first extension and two second nickel plates are disposed on the other first extension. The first positive electrode and the first negative electrode are electrically connected to the two first nickel plates, and the second positive electrode and the second negative electrode are electrically connected to the two second nickel plates, respectively.

[0019] Beneficial effects: This type of connection component can be effectively adapted to battery cell assemblies with four tabs, and its structure is simple and reliable.

[0020] Thirdly, this utility model also provides a terminal device, which includes: a body having a mounting position; and the aforementioned battery, disposed in the mounting position and connected to the body. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a front view of a circuit board unfolded according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1The diagram shows a front view of the folded circuit board.

[0024] Figure 3 This is a three-dimensional schematic diagram of a battery according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Battery cell assembly;

[0027] 101. First positive electrode ear; 102. First negative electrode ear; 103. Second positive electrode ear; 104. Second negative electrode ear;

[0028] 201. Plate body;

[0029] 20111, First Main Body; 20112, First Extension;

[0030] 20121, Second Main Body Section; 20122, Second Extension Section;

[0031] 202, First connecting assembly; 2021, First nickel sheet; 2022, Second nickel sheet;

[0032] 203, Second connecting component; 2031, Solder pad; 2032, Flexible board; 2033, Connector;

[0033] X, the first direction; Y, the second direction. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] The following is combined with Figures 1 to 3 The following describes embodiments of the present invention.

[0036] According to an embodiment of the present invention, in one aspect, a circuit board is provided having intersecting first direction X and second direction Y. The circuit board includes: a board body 201, a first connecting component 202, and a second connecting component 203.

[0037] The plate 201 includes a main body and at least one first extension 20112 and a second extension 20122 that are offset from the main body along the first direction X. The main body extends along the first direction X, and the first extension 20112 and the second extension 20122 are respectively disposed on either side of the main body along the second direction Y. Both the first extension 20112 and the second extension 20122 can be folded toward the main body.

[0038] The first connecting component 202 is disposed on the first extension 20112 and is used to connect with the tab assembly of the cell assembly 1. The second connecting component 203 is disposed on the second extension 20122 and is used to connect with an external device.

[0039] The circuit board of this embodiment has a first extension 20112 and a second extension 20122 on the main body of the board body 201. The extensions of the board body 201 are used to support the first connecting component 202 and the second connecting component 203, avoiding the connecting components occupying too much space on the main body and saving more space for component arrangement. In addition, since the first extension 20112 and the second extension 20122 can be folded toward the main body and are staggered, it can avoid interference when the extensions are folded, and also avoid the lines of the first connecting component 202 and the second connecting component 203 overlapping on the same surface, reducing the local heat generation problem of the board body 201. This effectively solves the problem of insufficient space on the circuit board of existing circuit boards, which makes it difficult to arrange components.

[0040] It should be noted that the first direction X refers to Figure 1 The middle arrow points to the direction of "X", and the second direction, Y, refers to... Figure 1 The direction of the "Y" indicated by the middle arrow.

[0041] Furthermore, in conventional technology, since the connection circuits of the two first extensions 20112 will inevitably overlap, in order to better arrange the connection circuits, when the arrangement space of the corresponding overlapping position of the circuit board is insufficient, it is necessary to reduce the thickness of the heat-conducting layer at the corresponding position to make room for the arrangement. Although this type of circuit board can arrange the circuit, it will sacrifice the heat dissipation capacity of the local position, making the local position of the circuit board more prone to overheating. However, the circuit board in the battery of this embodiment can effectively avoid this situation. Since the circuit overlap can be avoided, the heat-conducting layer on the circuit board can be guaranteed to have sufficient thickness, thus ensuring the heat dissipation efficiency of the heat conduction capacity.

[0042] In one possible implementation, multiple first extensions 20112 are spaced apart along the first direction X; along the second direction Y, multiple first extensions 20112 are connected to the same side of the plate 201, and second extensions 20122 are connected to the other side of the plate 201. This arrangement of extensions makes it easier for the tabs of the cell assembly 1 to connect with the corresponding extensions, and at the same time, it can also avoid interference between the position of the second extension 20122 and the cell assembly 1, resulting in a simple and reliable structure.

[0043] In related technologies, the circuit board has nickel strips for connecting to two battery cells. The two nickel strips are arranged sequentially along the length of the circuit board, while the pads for connecting the circuit board to external components are located at the ends of the circuit board along its length. In this arrangement, since both nickel strips need to be electrically connected to the pads, the connection circuits of the two nickel strips will inevitably overlap. During normal operation, the temperature rise at the overlapping part of the circuit is more severe, which can easily lead to local overheating of the circuit board.

[0044] In one possible implementation, the main body includes a plurality of first main body portions 20111 and second main body portions 20121 connected along a first direction X. A first extension portion 20112 is connected to a first main body portion 20111, and a second extension portion 20122 is connected to a second main body portion 20121. The second main body portion 20121 is disposed between the two first main body portions 20111. In this arrangement, since the first connecting component 202 is disposed on both sides of the second connecting component 203, and the connection paths of the first connecting component 202 and the second connecting component 203 both extend from both sides to the second connecting component 203, the phenomenon of circuit overlap can be effectively avoided. At the same time, the arrangement of connecting components on both sides can also reduce the length of the circuit, thereby reducing the internal resistance of the circuit. When the battery is working, it can not only make the overall heat generation of the circuit board more uniform, but also reduce the overall heat generation.

[0045] In one possible implementation, the part where the first extension 20112 is connected to the first main body 20111 is a flexible part; the part where the second extension 20122 is connected to the second main body 20121 is a flexible part. This kind of bending and folding extension can effectively reduce the space occupied by the circuit board in the second direction Y, making the overall structure of the circuit board more compact. The connection part is a flexible part, which is not only less likely to be damaged by repeated bending, but also makes it easy to adjust the position of the extension after bending.

[0046] Specifically, the structure of the first extension 20112 and the second extension 20122 is not limited. It can be an integral structure or a multi-segment structure formed by connecting separate parts through a connecting step.

[0047] In order to facilitate manufacturing, the first extension 20112 and the second extension 20122 are both flexible parts. In addition, the positions of the first extension 20112 and the second extension 20122 can also be adjusted according to the required connection direction.

[0048] Preferably, the first main body 20111 is a rigid circuit board, and the first extension 20112 is a flexible circuit board.

[0049] In one possible implementation, the second connecting component 203 includes a pad 2031 and a flexible plate 2032 disposed on the second extension 20122. One end of the flexible plate 2032 is connected to the pad 2031, and the other end of the flexible plate 2032 is provided with a connector 2033 for electrical connection with an external device. The second connecting component 203 has a simple and reliable structure. The flexible plate 2032 itself has an adjustable length and can be bent, which can effectively improve the distance and flexibility when the second connecting component 203 is connected.

[0050] Furthermore, such as Figure 1 As shown, the second connecting component 203 is bent in shape. This type of second connecting component 203 is not easily damaged when it is pulled, and it can also be connected more flexibly. It can change its bending state to match the external components in different positions.

[0051] In one possible implementation, the first connecting component 202 includes a first nickel sheet 2021 and a second nickel sheet 2022. A first extension 20112 is provided with a plurality of first nickel sheets 2021 spaced apart, and another first extension 20112 is provided with a plurality of second nickel sheets 2022 spaced apart. This type of connecting component can effectively adapt the circuit board to a battery cell with four or more tabs, thereby improving the applicability of the circuit board.

[0052] It is understood that, as an alternative implementation, only one first nickel sheet 2021 may be provided on the first extension 20112, and only one first nickel sheet 2021 may be provided on the other first extension 20112; or, by providing more first extensions 20112, with one first nickel sheet 2021 provided on each first extension 20112, the connection and matching requirements of more electrodes can be met.

[0053] According to an embodiment of the present invention, in another aspect, a battery is provided, comprising: a cell assembly 1 and the aforementioned circuit board; the cell assembly 1 has a tab assembly, the tab assembly being electrically connected to a first connection assembly 202 of the circuit board.

[0054] Specifically, there is no limitation on the specific structural form of the battery cell assembly 1. The battery cell assembly 1 can have only one battery cell with four tabs; the battery cell assembly 1 can also have two battery cells, one of which has a first positive tab 101 and a first negative tab 102, and the other of which has a second positive tab 103 and a second negative tab 104; the specific form of the battery cell assembly 1 can be selected according to the requirements.

[0055] In one possible implementation, the electrode assembly includes a first electrode assembly and a second electrode assembly. The first electrode assembly includes a first positive electrode 101 and a first negative electrode 102, and the second electrode assembly includes a second positive electrode 103 and a second negative electrode 104.

[0056] The first connecting component 202 includes two first nickel sheets 2021 and two second nickel sheets 2022. Two first nickel sheets 2021 are disposed on one first extension 20112 and two second nickel sheets 2022 are disposed on the other first extension 20112.

[0057] The first positive tab 101 and the first negative tab 102 are electrically connected to two first nickel plates 2021 respectively, and the second positive tab 103 and the second negative tab 104 are electrically connected to two second nickel plates 2022 respectively. This type of connection assembly can be effectively adapted to the battery cell assembly 1 with four tabs, and the structure is simple and reliable.

[0058] In one possible implementation, the battery cell assembly 1 includes a first battery cell and a second battery cell, which are arranged sequentially along a first direction X. The first battery cell has a first positive tab 101 and a first negative tab 102, and the first battery cell has a second positive tab 103 and a second negative tab 104. The dual-cell battery cell assembly 1 can effectively improve charging efficiency, while being simple, reliable, and easy to assemble and maintain.

[0059] According to an embodiment of the present invention, in another aspect, a terminal device is provided, comprising: a body having a mounting position; and the aforementioned battery disposed in the mounting position and connected to the body.

[0060] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A circuit board having intersecting first direction (X) and second direction (Y), characterized in that, include: Plate body (201), first connecting component (202), and second connecting component (203); The plate (201) includes a main body and at least one first extension (20112) and a second extension (20122) offset from the main body along the first direction (X). The main body extends along the first direction (X), and the first extension (20112) and the second extension (20122) are respectively disposed on either side of the main body along the second direction (Y). Both the first extension (20112) and the second extension (20122) can be folded toward the main body. The first connecting component (202) is disposed on the first extension (20112) and is used to connect to the tab assembly of the cell assembly (1). The second connecting component (203) is disposed on the second extension (20122) and is used to connect to an external device.

2. The circuit board according to claim 1, characterized in that, Along the first direction (X), the first extension (20112) is provided with a plurality of portions at intervals; Along the second direction (Y), a plurality of first extensions (20112) are connected to the same side of the plate (201), and the second extensions (20122) are connected to the other side of the plate (201).

3. The circuit board according to claim 2, characterized in that, The main body includes a plurality of first main body portions (20111) and second main body portions (20121) connected along the first direction (X), a first extension portion (20112) is connected to a first main body portion (20111), a second extension portion (20122) is connected to a second main body portion (20121), and the second main body portion (20121) is disposed between two first main body portions (20111).

4. The circuit board according to claim 3, characterized in that, The portion where the first extension (20112) connects to the first main body (20111) is a flexible component; And / or, the portion where the second extension (20122) connects to the second main body (20121) is a flexible component.

5. The circuit board according to any one of claims 1 to 4, characterized in that, The second connection component (203) includes a pad (2031) and a flexible plate (2032) disposed on the second extension (20122). One end of the flexible plate (2032) is connected to the pad (2031), and the other end of the flexible plate (2032) is provided with a connector (2033) for electrical connection with an external device.

6. The circuit board according to any one of claims 1 to 4, characterized in that, The first connecting component (202) includes a first nickel sheet (2021) and a second nickel sheet (2022). A plurality of first nickel sheets (2021) are disposed at intervals on one first extension (20112), and a plurality of second nickel sheets (2022) are disposed at intervals on another first extension (20112).

7. A battery, characterized in that, include: The battery cell assembly (1) and the circuit board according to any one of claims 1 to 6; The battery cell assembly (1) has a tab assembly that is electrically connected to a first connection assembly (202) of the circuit board.

8. The battery according to claim 7, characterized in that, The electrode assembly includes a first electrode assembly and a second electrode assembly. The first electrode assembly includes a first positive electrode (101) and a first negative electrode (102). The second electrode assembly includes a second positive electrode (103) and a second negative electrode (104). The first connecting assembly (202) includes two first nickel sheets (2021) and two second nickel sheets (2022). Two first nickel sheets (2021) are disposed on one first extension (20112), and two second nickel sheets (2022) are disposed on the other first extension (20112). The first positive electrode tab (101) and the first negative electrode tab (102) are electrically connected to the two first nickel plates (2021) respectively, and the second positive electrode tab (103) and the second negative electrode tab (104) are electrically connected to the two second nickel plates (2022) respectively.

9. A terminal device, characterized in that, include: The fuselage has mounting positions; The battery as described in claim 7 or 8 is disposed in the mounting position and connected to the body.

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