A terminal

Abstract

This application provides a terminal. The terminal includes: a motherboard; a battery assembly; a battery protection board, the battery protection board including a single-layer flexible circuit board, the flexible circuit board having a flat structure, the flexible circuit board including a main body and an extension, the main body being bent relative to the extension, the main body being electrically connected to the battery assembly, and the extension being electrically connected to the motherboard; and a plurality of components, some of which are disposed on the motherboard and others on the main body. This application embodiment, by disposing of some of the components on the motherboard and others on the battery protection board, makes the battery protection board a single-layer flexible circuit board, reducing the thickness of the battery protection board and thus reducing the installation space occupied by the battery protection board at the head of the battery assembly. The extra installation space can be used to increase the capacity of the battery assembly, thereby extending the terminal's battery life.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, and specifically relates to a terminal. Background Technology

[0002] With the widespread use of mobile electronic terminals, lithium batteries and other battery components have become an indispensable part of various electronic terminals. In order to protect the charging safety of battery components, a battery protection board is usually connected to the head of the battery component to prevent overcharging, over-discharging, overcurrent, short circuit, and over-temperature charging and discharging phenomena.

[0003] The battery protection board in the terminal disclosed in related technologies includes a circuit board and multiple components. These components are electrically connected to the battery pack via the circuit board to protect the battery pack. To accommodate multiple components, the battery protection board typically uses a multi-layer circuit board. However, the multi-layer circuit board setup results in the battery protection board occupying a large amount of mounting space at the head of the battery pack, thus affecting the capacity expansion of the battery pack. Utility Model Content

[0004] This application aims to provide a terminal to solve the problem that in existing terminals, the battery protection board occupies a large amount of installation space at the head of the battery module, which affects the capacity expansion of the battery module.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: This application discloses a terminal, the terminal comprising: Motherboard; Battery components; A battery protection board, comprising a single-layer flexible circuit board, the flexible circuit board having a flat plate structure, the flexible circuit board comprising a main body and an extension, the main body being bent relative to the extension, the main body being electrically connected to the battery assembly, and the extension being electrically connected to the main board; And multiple components, some of which are disposed on the motherboard, and some of which are disposed on the main body.

[0006] Optionally, the battery assembly includes a battery cell and a plurality of tabs disposed at one end of the battery cell; The main body includes a first surface and a second surface disposed opposite to each other along a first direction, the second surface being opposite to the end face of the battery cell having the tab; The second surface has a device area on one side along the second direction, and another part of the components are disposed in the device area, wherein the first direction intersects the second direction.

[0007] Optionally, another part of the components includes an anti-counterfeiting chip, which is disposed in the device area and electrically connected to the main body, and is used to store relevant information of the battery assembly.

[0008] Optionally, another part of the components also includes two resistors and two capacitors, the resistors and capacitors being disposed in the device area and electrically connected to the main body respectively.

[0009] Optionally, it also includes a first reinforcing plate, which is disposed on the first surface at a position corresponding to the device area.

[0010] Optionally, a welding area is provided on the side of the second surface away from the device area, and a plurality of welding parts are provided at intervals along the second direction in the welding area, and one welding part is electrically connected to one of the tabs.

[0011] Optionally, the battery protection board further includes a connector, an extension is provided between two adjacent soldered portions, and the connector is provided at the end of the extension away from the main body, and the connector is electrically connected to the main board.

[0012] Optionally, there are two extensions, and each of the two extensions is provided with the connector.

[0013] Optionally, it also includes a second reinforcing plate, the extension including two opposing surfaces, one surface having the connector and the other surface having the second reinforcing plate.

[0014] Optionally, the battery assembly further includes an insulating member disposed at the end of the cell where the tab is disposed, and the second surface is attached to the insulating member.

[0015] In this embodiment, by placing a portion of multiple components on the terminal motherboard and another portion on the battery protection board, the installation of multiple components is achieved. This allows the battery protection board to be configured as a single-layer flexible circuit board, reducing its thickness and thus the installation space occupied by the battery protection board at the head of the battery assembly. The extra installation space can be used to increase the size of the battery assembly, thereby increasing its capacity and extending the terminal's battery life.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a battery assembly and a battery protection board in a terminal according to an embodiment of this application; Figure 2 yes Figure 1 This is one of the partial structural diagrams of a battery assembly and battery protection board in a terminal according to an embodiment of this application; Figure 3 yes Figure 1 This is a second partial structural schematic diagram of a battery assembly and battery protection board in a terminal as described in the embodiments of this application; Figure 4 yes Figure 1 This is the fourth partial structural schematic diagram of a battery assembly and battery protection board in a terminal as described in the embodiments of this application; Figure 5 This is a bottom view of a battery protection board as described in an embodiment of this application; Figure 6 This is a side view of a battery protection board according to an embodiment of this application; Figure 7 This is a top view of a battery protection board as described in an embodiment of this application; Figure 8 This is a schematic diagram of the components of a battery protection board according to an embodiment of this application.

[0018] Reference numerals: 1-Battery assembly; 10-Cell; 11-Taper; 13-Insulator; 2-Flexible circuit board; 20-Main body; 201-First surface; 202-Second surface; 2021-Device area; 2022-Welding area; 2023-Welding part; 21-Extension; 22-Connector; 23-First reinforcing plate; 24-Second reinforcing plate; 30-Anti-counterfeiting chip; 31-Resistor; 32-Capacitor; 4-Electrical connector, Y-First direction; X-Second direction. Detailed Implementation

[0019] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0020] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] This application provides a terminal, including mobile phones, tablets, televisions, smart wearable products (e.g., smartwatches, smart bracelets), virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, and other electronic products with rechargeable batteries. The terminal can also be a small rechargeable household appliance (e.g., a soymilk maker, a robot vacuum cleaner), a drone, or other electronic products. This application does not impose any special limitations on the specific form of the terminal. The feeding device in this application will be described in detail below with reference to the accompanying drawings.

[0024] Reference Figures 1-8This application discloses a terminal, which includes: a motherboard; a battery assembly 1; a battery protection board, the battery protection board including a single-layer flexible circuit board 2, the flexible circuit board 2 having a flat structure, the flexible circuit board 2 including a main body 20 and an extension 21, the main body 20 being bent relative to the extension 21, the main body 20 being electrically connected to the battery assembly 1, and the extension 21 being electrically connected to the motherboard; and a plurality of components, a portion of which are disposed on the motherboard, and another portion of which are disposed on the main body 20.

[0025] Specifically, the motherboard can be a printed circuit board that integrates various key components and interfaces in the terminal. It is used to manage the operation of various components in the terminal, and the key components may include a central processing unit, an application processor, etc. The battery assembly 1 is used to power the electronic components in the terminal.

[0026] The flexible circuit board 2 includes a main body 20 and an extension 21. The extension 21 extends outward from the main body 20. The main body 20 of the flexible circuit board 2 is bent relative to the extension 21 to fit the end face of the main body 20 with the battery assembly 1, facilitating the electrical connection between the main body 20 and the battery assembly 1. The portion of the extension 21 away from the main body 20 is electrically connected to the main board, thereby electrically connecting the battery protection board between the main board and the battery assembly 1. The multiple components specifically refer to components used to protect the battery assembly 1. They protect the battery assembly 1 during charging and discharging, even if the battery assembly 1 is disconnected from the main board, thus preventing the battery assembly 1 from being overcharged, over-discharged, overcurrent, short-circuited, or subjected to excessively high temperatures during charging and discharging. Among the multiple components, some components are transferred to the main board, where they are installed and function to protect the battery assembly 1. Other components are mounted on the battery protection board, which also serves to install and protect the battery assembly 1.

[0027] In this embodiment, by setting a portion of multiple components on the main board of the terminal and another portion on the battery protection board, the installation of multiple components is realized. This allows the battery protection board to be set as a single-layer flexible circuit board 2, reducing the thickness of the battery protection board and thus reducing the installation space occupied by the battery protection board at the head of the battery assembly 1. The extra installation space can be used to increase the size of the battery assembly 1, thereby increasing the capacity of the battery assembly 1 and extending the terminal's battery life.

[0028] Optionally, the battery assembly 1 includes a battery cell 10 and a plurality of tabs 11 disposed at one end of the battery cell 10; the main body 20 includes a first surface 201 and a second surface 202 disposed opposite to each other along a first direction Y, the second surface 202 being opposite to the end face of the battery cell 10 having the tabs 11; a device area 2021 is disposed on one side of the second surface 202 along a second direction X, and another part of the components are disposed in the device area 2021, wherein the first direction Y intersects the second direction X.

[0029] like Figures 1-8 As shown, the battery assembly 1 may include a battery cell 10 and multiple tabs 11. The battery cell 10 is used to provide power to electronic components in the terminal. For example, the battery cell 10 may be a pouch cell 10. Figure 3 and Figure 4 As shown, a plurality of tabs 11 are provided on one end face of the battery cell 10. The tabs 11 extend out of the end face of the battery cell 10. The plurality of tabs 11 include positive tabs 11 and negative tabs 11. There can be 2, 3, 4, etc. The present application does not make a specific limitation on the number of tabs 11.

[0030] like Figure 3 and Figure 5 As shown, the main body 20 includes a first surface 201 and a second surface 202 facing away from each other. The second surface 202 is opposite to the tab 11 and can be used to connect with the tab 11. A device area 2021 is provided on one side of the second surface 202 along the second direction X. This device area 2021 is... Figure 3 The area enclosed by the solid line of the rectangle, or Figure 5 The area enclosed by the rectangular dashed line contains another set of components, all of which are located in the component area 2021. They are electrically connected to the battery cell 10 through the main body 20 and to the motherboard through the extension 21. Thus, these components can protect the battery cell 10 during the charging and discharging process. Even if the battery cell 10 is disconnected from the motherboard, it can prevent the battery cell 10 from being overcharged, over-discharged, overcurrent, short-circuited, or overheated during charging and discharging.

[0031] In practical applications, by concentrating another portion of the components in the device area 2021 of the second surface 202, the space of the battery protection board can be fully utilized, reducing unnecessary gaps. This compact design makes the battery protection board occupy less space, freeing up more space for capacity expansion of the battery assembly 1 and extending the terminal's battery life.

[0032] Optionally, another part of the components includes an anti-counterfeiting chip 30, which is disposed in the device area 2021 and electrically connected to the main body 20. The anti-counterfeiting chip 30 is used to store relevant information of the battery assembly 1.

[0033] like Figure 8 As shown, specifically, the anti-counterfeiting chip 30 stores relevant information about the battery assembly 1, which can be used to verify the authenticity of the battery assembly 1. By setting the anti-counterfeiting chip 30 in the device area 2021 of the battery protection board, the use of counterfeit battery assemblies 1 can be effectively prevented, ensuring the safe operation of the terminal device. The anti-counterfeiting chip 30 is set in the device area 2021 and is electrically connected to the battery assembly 1 and the motherboard through the battery protection board. In practical applications, the anti-counterfeiting chip 30 can be set only in the device area 2021 of the battery protection board. In this way, since the battery protection board only has the anti-counterfeiting chip 30, the thickness of the battery protection board can be further reduced, which can effectively increase the size of the cell 10 in the battery protection board assembly and increase the battery capacity.

[0034] Optionally, another part of the components also includes two resistors 31 and two capacitors 32, the resistors 31 and the capacitors 32 are all disposed in the device area 2021 and are electrically connected to the main body 20 respectively.

[0035] like Figure 8 As shown, in addition to the anti-counterfeiting chip 30 described above, other components may include two resistors 31 and two capacitors 32. The two resistors 31, two capacitors 32, and the anti-counterfeiting chip 30 are electrically connected to the main body 20 to form a protection circuit. In practical applications, by setting these components on the battery protection board, a protection circuit can be formed, which can better manage the charging and discharging process of the battery assembly 1 and ensure the efficient operation of the battery assembly 1. Furthermore, by setting two circuits and two capacitors 32 in the device area 2021, the number of components on the battery protection board can be reduced, and the thickness of the battery protection board can be decreased while protecting the battery assembly 1. The two resistors 31 can be of the same or different types. For example, one resistor 31 can be a voltage divider resistor 31, and the other resistor 31 can be a thermistor 31.

[0036] It should be noted that, Figure 8 The example shown is merely an illustration of a specific connection between resistor 31 and capacitor 32 in this application to form a protection circuit. In practical applications, the specific connection can be flexibly and specifically set according to the actual situation. The specific connection form of the protection circuit in this application embodiment is not specifically limited.

[0037] Optionally, it also includes a first reinforcing plate 23, which is disposed at the position corresponding to the first surface 201 and the device area 2021.

[0038] like Figure 4 and Figure 6As shown, the first reinforcing plate 23 is made of a relatively hard resin material or metal material. The first reinforcing plate 23 is disposed on the first surface 201, and the position of the first reinforcing plate 23 on the first surface 201 is adapted to the position of the device area 2021 on the second surface 202. That is, the position of the first reinforcing plate 23 corresponds to the position of another part of the components on the second surface 202. In practical applications, since the flexible circuit board 2 is relatively soft, when the components are placed on the flexible circuit board 2, the first reinforcing plate 23 can support the flexible circuit board 2, thereby improving the reliability of the component bonding.

[0039] Optionally, a welding area 2022 is provided on the side of the second surface 202 away from the device area 2021. The welding area 2022 is provided with a plurality of welding portions 2023 at intervals along the second direction X. One welding portion 2023 is electrically connected to one of the tabs 11.

[0040] like Figures 3-5 As shown, Figure 5 The area circled by the other rectangular dashed box is the welding area 2022. Within this welding area 2022, multiple welding portions 2023 are spaced at intervals along the second direction X. Each welding portion 2023 can be a solder pad. It can be understood that the number of welding portions 2023 corresponds to the number of tabs 11. One welding portion 2023 is electrically connected to one tab 11. Specifically, the electrical connection between one welding portion 2023 and one tab 11 is achieved through an electrical connector 4. This electrical connector 4 can be an L-shaped nickel sheet, such as... Figure 3 and Figure 4 As shown, one end of the L-shaped nickel sheet is welded to the welding part 2023, and the other end is welded to the tab 11, thereby realizing the electrical connection between the flexible circuit board 2 and the battery assembly 1. In practical applications, by setting multiple welding parts 2023 in the welding area 2022, and each welding part 2023 being electrically connected to a tab 11, the electrical connection between the battery assembly 1 and the battery protection board can be ensured to be more robust and reliable, reducing the risk of open circuit or short circuit due to poor contact.

[0041] Optionally, the battery protection board further includes a connector 22, an extension 21 is provided between two adjacent solder portions 2023, and the connector 22 is provided at one end of the extension 21 away from the main body portion 20, and the connector 22 is electrically connected to the motherboard.

[0042] like Figure 1-7As shown, between two adjacent soldering portions 2023, the main body 20 extends outward to form an extension 21, which is located in the middle of the flexible circuit board 2. A connector 22 is provided at the end of the extension 21 away from the main body 20. When connected to the motherboard, the extension 21 bends relative to the main body 20, allowing the connector 22 to be inserted into the connector 22 interface on the motherboard, thus enabling the flexible circuit board 2 to be electrically connected to the motherboard. The battery protection board provided in this embodiment may include at least one connector 22. For example, when the battery protection board includes a connector 22, the connector 22 can be electrically connected to both the positive and negative voltage terminals on the motherboard simultaneously through the connector 22 interface on the motherboard to form an electrical signal loop. In this embodiment, since the extension 21 is disposed between the two welding portions 2023, the extension 21 is located in the middle of the flexible circuit board 2. Compared with the solution of disposing the extension 21 on the side of the flexible circuit board 2, there is no need to provide an additional folding portion on the main body 20 to achieve connection with the main body of the extension 21 through folding of the folding portion. This further reduces the head size of the battery assembly 1 occupied by the flexible circuit board 2, which is beneficial to the improvement of battery capacity.

[0043] In some embodiments of this application, there are two extensions 21, and each of the two extensions 21 is provided with a connector 22. That is, the battery protection board may include two connectors 22, respectively disposed on... Figure 4 The two extensions 21 shown. In this case, one connector 22 can be electrically connected to the positive voltage terminal on the motherboard, and the other connector 22 can be electrically connected to the negative voltage terminal on the motherboard, thereby forming an electrical signal loop. In practical applications, since both extensions 21 are located in the middle of the flexible circuit board 2, compared to the solution of setting the two extensions 21 on both sides of the flexible circuit board 2, there is no need to set additional folding parts on both sides of the main body 20 to achieve connection with the main body of the extension 21 through folding of the folding parts. This further reduces the size of the head of the battery assembly 1 occupied by the flexible circuit board 2, which is beneficial to the improvement of battery capacity.

[0044] Optionally, it also includes a second reinforcing plate 24, wherein the extension 21 includes two surfaces disposed opposite to each other, one surface being provided with the connector 22 and the other surface being provided with the second reinforcing plate 24.

[0045] like Figure 1 and Figure 2As shown, specifically, the second reinforcing plate 24 can be made of a relatively hard resin material or a metal material. The second reinforcing plate 24 is disposed on the other surface of the extension 21 opposite to the surface where the connector 22 is located. That is, the position of the second reinforcing plate 24 and the connector 22 on the extension 21 correspond to each other. In practical applications, since the flexible circuit board 2 is relatively soft, when the connector 22 is disposed on the flexible circuit board 2, the second reinforcing plate 24 can support the flexible circuit board 2, thereby improving the reliability of the connector 22 bonding.

[0046] Optionally, the battery assembly 1 further includes an insulating member 13, which is disposed at the end of the cell 10 where the tab 11 is disposed, and the second surface 202 is attached to the insulating member 13.

[0047] like Figures 1-4 As shown, the insulating component 13 can be insulating tape. The insulating tape is pasted on the end face of the battery cell 10 with electrodes. In addition to this end face, the insulating tape can also be pasted on other end faces of the battery cell 10 to protect the various components in the battery cell 10 and prevent the battery cell 10 from short-circuiting due to collisions, squeezing, etc.

[0048] The tab 11 extends from the insulating member 13 for welding to the flexible circuit board 2. Double-sided adhesive can be adhered to the insulating member 13 on this end face, and the second surface 202 is adhered to the double-sided adhesive to achieve the connection between the flexible circuit board 2 and the battery end face. In practical applications, the insulating member 13 can provide a certain degree of physical protection for the battery protection board, preventing damage to the battery protection board during installation and use, and extending the service life of the battery protection board. By adhering the second surface 202 of the battery protection board to the insulating member 13, the assembly process of the battery assembly 1 can be simplified. This design reduces assembly steps and complexity, and improves production efficiency.

[0049] In summary, the terminal described in the embodiments of this application may include at least the following advantages: In this embodiment of the application, by setting a portion of multiple components on the main board of the terminal and another portion on the battery protection board, the installation of multiple components is realized. In this way, the battery protection board can be set as a single-layer flexible circuit board 2, reducing the thickness of the battery protection board and thus reducing the installation space occupied by the battery protection board at the head of the battery assembly 1. The extra installation space can be used to increase the size of the battery assembly 1, thereby increasing the capacity of the battery assembly 1 and extending the terminal's battery life.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A terminal, characterized in that, The terminal includes: Motherboard; Battery assembly (1); A battery protection board, the battery protection board includes a single-layer flexible circuit board (2), the flexible circuit board (2) is a flat structure, the flexible circuit board (2) includes a main body (20) and an extension (21), the main body (20) is bent relative to the extension (21), the main body (20) is electrically connected to the battery assembly (1), and the extension (21) is electrically connected to the main board; And multiple components, a portion of which are disposed on the motherboard, and another portion of which are disposed on the main body (20).

2. The terminal according to claim 1, characterized in that, The battery assembly (1) includes a cell (10) and a plurality of tabs (11) disposed at one end of the cell (10). The main body (20) includes a first surface (201) and a second surface (202) disposed opposite to each other along a first direction (Y), the second surface (202) being opposite to the end face of the battery cell (10) having the tab (11); The second surface (202) has a device area (2021) on one side along the second direction (X), and another part of the components are disposed in the device area (2021), wherein the first direction (Y) intersects the second direction (X).

3. The terminal according to claim 2, characterized in that, Another part of the components includes an anti-counterfeiting chip (30), which is disposed in the device area (2021) and electrically connected to the main body (20). The anti-counterfeiting chip (30) is used to store relevant information of the battery assembly (1).

4. The terminal according to claim 3, characterized in that, Another part of the components also includes two resistors (31) and two capacitors (32), the resistors (31) and the capacitors (32) are both disposed in the device area (2021) and are electrically connected to the main body (20).

5. The terminal according to claim 2, characterized in that, It also includes a first reinforcing plate (23), which is disposed at the position corresponding to the first surface (201) and the device area (2021).

6. The terminal according to claim 2, characterized in that, A soldering area (2022) is provided on the side of the second surface (202) away from the device area (2021). The soldering area (2022) is provided with a plurality of soldering parts (2023) spaced apart along the second direction (X). One of the soldering parts (2023) is electrically connected to one of the tabs (11).

7. The terminal according to claim 6, characterized in that, The battery protection board also includes a connector (22), and an extension (21) is provided between two adjacent welding portions (2023). The connector (22) is provided at one end of the extension (21) away from the main body (20), and the connector (22) is electrically connected to the main board.

8. The terminal according to claim 7, characterized in that, There are two extensions (21), and each of the two extensions (21) is provided with a connector (22).

9. The terminal according to claim 7, characterized in that, It also includes a second reinforcing plate (24), the extension (21) includes two surfaces disposed opposite to each other, one surface is provided with the connector (22) and the other surface is provided with the second reinforcing plate (24).

10. The terminal according to any one of claims 2-9, characterized in that, The battery assembly (1) further includes an insulating member (13), which is disposed at the end of the cell (10) where the tab (11) is disposed, and the second surface (202) is attached to the insulating member (13).

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