Battery structure and mobile terminal

Abstract

The utility model provides a battery structure and a mobile terminal, the battery structure comprises a battery cell, two protection plates and a soft plate structure, two sides of the battery cell are provided with tabs; the two protection plates are respectively positioned on the two sides of the battery cell, and are respectively and electrically connected with the tabs on the corresponding sides; the two ends of the flexible board structure are electrically connected with the two protection boards respectively so that the two protection boards can be connected in parallel. According to the utility model, the problem that the lithium battery of the mobile terminal in the prior art cannot effectively and quickly charge the mobile terminal is solved.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a battery structure and a mobile terminal. Background Technology

[0002] With the development of fast charging technology in smartphones, charging efficiency has been greatly improved. However, during the rapid charging process, the continuous high current causes significant heat generation in the battery protection board and cells, leading to a serious battery overheating problem. To ensure safety, the fast charging current is reduced over time to address the overheating issue. However, this method cannot effectively achieve the goal of fast charging. Utility Model Content

[0003] The main objective of this invention is to provide a battery structure and a mobile terminal to solve the problem that lithium batteries in existing mobile terminals cannot effectively fast charge the mobile terminals.

[0004] To achieve the above objectives, according to one aspect of the present invention, a battery structure is provided, comprising a battery cell, two protection boards, and a flexible board structure, wherein the battery cell has tabs on both sides; the two protection boards are respectively located on both sides of the battery cell, and the two protection boards are electrically connected to the tabs on the corresponding sides; the two ends of the flexible board structure are electrically connected to the two protection boards respectively, so as to connect the two protection boards in parallel.

[0005] In one exemplary embodiment, the flexible board structure is an FPC flexible board.

[0006] In an exemplary embodiment, the flexible circuit board structure includes a flexible circuit board body and two first electrical connection pieces connected to each other. The two first electrical connection pieces are located on both sides of the flexible circuit board body and are electrically connected to two protection boards respectively.

[0007] In one exemplary embodiment, the flexible circuit board body has a heat dissipation layer.

[0008] In one exemplary embodiment, the flexible board body has a square structure.

[0009] In one exemplary embodiment, the battery cell has groove structures on both sides, and at least a portion of the two protective plates are located in the groove structures on the corresponding sides.

[0010] In one exemplary embodiment, each protection plate includes a plate body and a second electrical connection piece connected to each other, the plate body being located within a groove structure.

[0011] In an exemplary embodiment, the two protection boards are a first protection board and a second protection board, wherein the second electrical connection piece of the first protection board is used to electrically connect with the power supply port of the mobile terminal to provide power to the mobile terminal during the use of the mobile terminal; the second electrical connection piece of the second protection board is used to electrically connect with the charging port of the mobile terminal to charge the mobile terminal.

[0012] In an exemplary embodiment, the electrode tab includes a positive electrode tab and a negative electrode tab, and the protection plate has a positive electrode and a negative electrode. The positive electrode of the protection plate is electrically connected to the positive electrode tab, and the negative electrode of the protection plate is electrically connected to the negative electrode tab.

[0013] According to another aspect of the present invention, a mobile terminal is provided, including a battery structure, wherein the battery structure is the battery structure described above.

[0014] This invention provides a battery structure comprising a battery cell, two protection boards, and a flexible circuit board. The battery cell has tabs on both sides, and the two protection boards are located on opposite sides of the cell and electrically connected to the tabs on their respective sides. The flexible circuit board is electrically connected to both protection boards at both ends, thus connecting them in parallel. The tabs on both sides of the battery cell help reduce the internal resistance of the battery structure. Furthermore, connecting the two protection boards in parallel via the flexible circuit board further reduces the internal resistance, thereby reducing heat generation and ensuring efficient fast charging for mobile terminals. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of a battery structure according to an alternative embodiment of the present invention is shown;

[0017] Figure 2 It shows Figure 1 An exploded view of the battery structure.

[0018] The above figures include the following reference numerals:

[0019] 10. Battery cell; 11. Groove structure;

[0020] 20. Protection board; 21. Board body; 22. Second electrical connection piece; 23. First protection board; 24. Second protection board;

[0021] 30. Flexible circuit board structure; 31. Flexible circuit board body; 32. First electrical connection piece. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] To address the problem that lithium batteries in existing mobile terminals cannot effectively fast charge mobile terminals, this invention provides a battery structure and a mobile terminal, wherein the mobile terminal includes a battery structure, which is the battery structure described above and below.

[0024] like Figure 1 and Figure 2 As shown, the battery structure includes a cell 10, two protection boards 20, and a flexible board structure 30. The cell 10 has tabs on both sides. The two protection boards 20 are located on both sides of the cell 10 and are electrically connected to the tabs on the corresponding sides. The two ends of the flexible board structure 30 are electrically connected to the two protection boards 20 to connect the two protection boards 20 in parallel.

[0025] The present invention provides a battery structure comprising a battery cell 10, two protection plates 20, and a flexible circuit board 30. The battery cell 10 has tabs on both sides, and the two protection plates 20 are located on opposite sides of the battery cell 10 and electrically connected to the tabs on their respective sides. The two ends of the flexible circuit board 30 are electrically connected to the two protection plates 20 in parallel. By providing tabs on both sides of the battery cell 10, the internal resistance of the battery structure is initially reduced. Furthermore, the parallel connection of the two protection plates 20 via the flexible circuit board 30 further reduces the internal resistance of the battery structure, thereby reducing heat generation and ensuring the fast charging efficiency of the mobile terminal.

[0026] It should be noted that in this application, the flexible board structure 30 is an FPC flexible board.

[0027] like Figure 2As shown, the flexible printed circuit board (FPCB) structure 30 includes a connected FPCB body 31 and two first electrical connection tabs 32. The two first electrical connection tabs 32 are located on both sides of the FPCB body 31 and are electrically connected to two protection boards 20. By configuring the FPCB structure 30 to include the connected FPCB body 31 and the two first electrical connection tabs 32, the FPCB body 31 can cover as much of the battery cell 10 as possible, which helps ensure heat dissipation and heat equalization of the battery cell, thereby ensuring reliable heat dissipation. Furthermore, the arrangement of the two first electrical connection tabs 32 ensures reliable electrical connection between the two first electrical connection tabs 32 and the two protection boards 20.

[0028] It should be noted that, in this application, in order to ensure the reliability of heat dissipation of the flexible circuit board body 31 to the battery cell 10, the flexible circuit board body 31 preferably has a heat dissipation layer.

[0029] Preferably, the FPC flexible board mentioned above in this application is FPC copper foil. In this way, the FPC copper foil can play a good role in heat dissipation and heat distribution, further reducing the heat generation of the battery structure, thereby helping to ensure the fast charging efficiency of the mobile terminal.

[0030] It should be noted that, in this application, in order to ensure the reliability of heat dissipation and heat equalization of the flexible circuit board body 31 to the battery cell 10, the flexible circuit board body 31 is preferably square in structure. This is beneficial to increasing the contact area between the flexible circuit board body 31 and the battery cell 10, thereby ensuring the reliability of heat dissipation and heat equalization of the flexible circuit board body 31 to the battery cell 10.

[0031] like Figure 2 As shown, both sides of the battery cell 10 have groove structures 11, and at least a portion of the two protection plates 20 are located in the groove structures 11 on the corresponding sides. In this way, by providing groove structures 11 on both sides of the battery cell 10, the groove structures 11 not only protect the protection plates 20, but also make full use of some space on the battery cell 10, ensuring the compactness of the entire battery structure.

[0032] It should be noted that, in this application, if Figure 2 As shown, each protection board 20 includes a board body 21 and a second electrical connection piece 22 connected to each other. The board body 21 is located inside the groove structure 11, and the second electrical connection piece 22 is located outside the groove structure 11. In this way, by setting each protection board 20 to include a board body 21 and a second electrical connection piece 22 connected to each other, the reliability of the electrical connection between the board body 21 and the electrode tab is ensured, while the reliability of the electrical connection between the second electrical connection piece 22 and the port of the mobile terminal is also ensured.

[0033] like Figure 2As shown, the two protection boards 20 are a first protection board 23 and a second protection board 24, respectively. The second electrical connection piece 22 of the first protection board 23 is electrically connected to the power supply port of the mobile terminal to provide power to the mobile terminal during use. The second electrical connection piece 22 of the second protection board 24 is electrically connected to the charging port of the mobile terminal to charge the mobile terminal. Thus, the first protection board 23 is mainly used to provide power to the mobile terminal. Since the current required by the mobile terminal during use is relatively small, a low-current connection board can be used at the location of the first protection board 23 to achieve discharge management of the mobile terminal. Simultaneously, the current from the second protection board 24 is transferred to the first protection board 23 through the internal structure of the battery cell 10 and through the FPC flexible board for charging, thereby achieving high-efficiency fast charging. Furthermore, the second protection board 24 is mainly used to charge the mobile terminal. Since charging the mobile terminal requires a large current, a high-current connection board can be directly used at the location of the second protection board 24.

[0034] It should be noted that in this application, the FPC flexible board can also transmit current and signals to the first protection board 23, and the FPC flexible board can also transmit current and signals to the second protection board 24.

[0035] It should be noted that in this application, the first protection board 23 can achieve a small current by making its size relatively small, and the second protection board 24 can achieve a large current by making its size relatively large. Of course, there are other implementation methods, which will not be elaborated here.

[0036] It should be noted that in this application, the overall structural dimensions of the first protective plate 23 are smaller than those of the second protective plate 24.

[0037] It should be noted that, in this application, considering that the charging port of the mobile terminal is usually located at the bottom of the mobile terminal, the first protection board 23 is preferably located above the second protection board 24. This ensures the convenience of electrical connection between the second protection board 24 and the charging port of the mobile terminal, as well as the reliability of the electrical connection between the second protection board 24 and the charging port of the mobile terminal.

[0038] It should be noted that in this application, the electrode tab includes a positive electrode tab and a negative electrode tab, the protection plate 20 has a positive electrode and a negative electrode, the positive electrode of the protection plate 20 is electrically connected to the positive electrode tab, and the negative electrode of the protection plate 20 is electrically connected to the negative electrode tab.

[0039] The beneficial effects of this application are as follows:

[0040] 1) Fast charging performance has been improved by 50%;

[0041] 2) Both sides of the battery cell 10 have tabs, which reduces the internal resistance of the battery structure;

[0042] 3) The battery structure has two protection boards 20, namely dual-board charging or intermittent charging. The first protection board 23 discharges to the mobile terminal, and the second protection board 24 charges the mobile terminal. The first protection board 23 participates in charging through the FPC flexible board.

[0043] 4) The FPC flexible circuit board covers part of the battery cell 10, which helps to dissipate heat and even out the heat in the battery structure;

[0044] 5) The motherboard and fast charging connection cable inside the mobile terminal have been eliminated, reducing costs and improving product reliability.

[0045] The present invention provides a battery structure comprising a battery cell 10, two protection plates 20, and a flexible circuit board 30. The battery cell 10 has tabs on both sides, and the two protection plates 20 are located on opposite sides of the battery cell 10 and electrically connected to the tabs on their respective sides. The two ends of the flexible circuit board 30 are electrically connected to the two protection plates 20 in parallel. By providing tabs on both sides of the battery cell 10, the internal resistance of the battery structure is initially reduced. Furthermore, the parallel connection of the two protection plates 20 via the flexible circuit board 30 further reduces the internal resistance of the battery structure, thereby reducing heat generation and ensuring the fast charging efficiency of the mobile terminal.

[0046] It should be noted that in this application, the motherboard of the mobile terminal requires a wide connector for connection between the motherboard location and the bottom charging, and then the motherboard transmits power to the battery structure. In this application, the battery structure is charged directly without going through the motherboard of the mobile terminal. The motherboard of the mobile terminal communicates and manages the battery structure of the mobile terminal through the first protection board 23. This application eliminates the charging connector inside the mobile terminal, which greatly reduces the cost of the product.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0049] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery structure, characterized in that, include: A battery cell (10), wherein both sides of the battery cell (10) have tabs; Two protection plates (20) are located on both sides of the battery cell (10), and the two protection plates (20) are electrically connected to the corresponding tabs. A flexible board structure (30) is provided, with its two ends electrically connected to two protection boards (20) respectively, so as to connect the two protection boards (20) in parallel.

2. The battery structure according to claim 1, characterized in that, The flexible board structure (30) is an FPC flexible board.

3. The battery structure according to claim 1, characterized in that, The flexible circuit board structure (30) includes a flexible circuit board body (31) and two first electrical connection pieces (32) connected to each other. The two first electrical connection pieces (32) are located on both sides of the flexible circuit board body (31) and are electrically connected to the two protection boards (20) respectively.

4. The battery structure according to claim 3, characterized in that, The flexible board body (31) has a heat dissipation layer.

5. The battery structure according to claim 3, characterized in that, The flexible board body (31) has a square structure.

6. The battery structure according to claim 1, characterized in that, The battery cell (10) has groove structures (11) on both sides, and at least a portion of the two protection plates (20) are located in the groove structures (11) on the corresponding sides.

7. The battery structure according to claim 6, characterized in that, Each of the protective plates (20) includes a plate body (21) and a second electrical connection piece (22) connected to each other, wherein the plate body (21) is located within the groove structure (11).

8. The battery structure according to claim 7, characterized in that, The two protective plates (20) are respectively: The first protection board (23) has a second electrical connection piece (22) for electrically connecting to the power supply port of the mobile terminal to provide power to the mobile terminal during the use of the mobile terminal; The second protection board (24) has a second electrical connection piece (22) for electrically connecting to the charging port of the mobile terminal to charge the mobile terminal.

9. The battery structure according to any one of claims 1 to 8, characterized in that, The tabs include a positive tab and a negative tab. The protection plate (20) has a positive electrode and a negative electrode. The positive electrode of the protection plate (20) is electrically connected to the positive tab, and the negative electrode of the protection plate (20) is electrically connected to the negative tab.

10. A mobile terminal, characterized in that, Includes a battery structure, wherein the battery structure is the battery structure according to any one of claims 1 to 9.

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