Circuit board assembly, battery assembly and electronic equipment

Abstract

The embodiment of the utility model provides a circuit board assembly, a battery assembly and electronic equipment, the circuit board assembly comprises a first circuit board and a second circuit board, and the second circuit board is connected to the first circuit board; wherein a first connecting piece is arranged on the first circuit board; the first connecting piece is used for being electrically connected with a first port of electronic equipment; a second connecting piece is arranged on the second circuit board; the second connecting piece is used for being electrically connected with a second port of the electronic equipment. Therefore, the first connecting piece and the second connecting piece are respectively connected with the first port and the second port of the electronic equipment, so that double current paths between the circuit board assembly and the electronic equipment are realized, the circuit board assembly can meet the large-current flow performance between the battery and the electronic equipment, and the large-current quick charging effect of the electronic equipment is realized. The circuit board assembly does not need to carry double connectors by adopting double FPCs, so that the structure of the circuit board assembly is relatively simple, the assembly convenience is improved, one FPC and one connector are saved, and the production cost is also reduced.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and specifically relates to a circuit board assembly, a battery assembly, and an electronic device. Background Art

[0002] The circuit board assembly is disposed in the battery assembly and is used to connect the battery assembly and the electronic device to monitor and protect the charging and discharging process, which plays an important role in ensuring the safety of the electronic device.

[0003] In the prior art, a solution of using a PCB (Printed Circuit Board) in combination with two FPCs (Flexible Printed Circuit) is usually adopted. The two FPCs are respectively connected to both ends of the PCB, and connectors are provided on each FPC to form a dual-connector structure. A relatively large current path is formed by connecting to the electronic device through the dual connectors to achieve super fast charging.

[0004] However, the inventor found during the research of the prior art that the dual FPC with dual connectors results in a relatively complex structure of the circuit board assembly, poor assembly convenience, and high cost. Summary of the Utility Model

[0005] In view of the above problems, the present utility model is proposed to provide a circuit board assembly, a battery assembly, and an electronic device that can overcome or at least partially solve the above problems.

[0006] To solve the above technical problems, the present application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a circuit board assembly, which includes: a first circuit board and a second circuit board, and the second circuit board is connected to the first circuit board; wherein,

[0008] A first connecting member is provided on the first circuit board; the first connecting member is used for electrically connecting to a first port of the electronic device;

[0009] A second connecting member is provided on the second circuit board; the second connecting member is used for electrically connecting to a second port of the electronic device.

[0010] Optionally, the first circuit board includes a circuit layer and an insulating layer covering the circuit layer;

[0011] An opening is provided on the insulating layer to expose the circuit layer, and the exposed circuit layer forms a gold finger structure, and the gold finger structure is the first connecting member.

[0012] Optionally, the circuit board assembly further includes a connection bar, which is disposed at the opening of the insulating layer and electrically connected to the circuit layer to form a gold finger structure.

[0013] Optionally, the opening includes a first opening and a second opening that are spaced apart;

[0014] The circuit layer exposed from the first opening is a positive gold finger terminal, which is used for electrically connecting to the negative electrode of the first port of the electronic device;

[0015] The circuit layer exposed from the second opening is a negative gold finger terminal, which is used for electrically connecting to the positive electrode of the first port of the electronic device.

[0016] Optionally, the circuit board assembly has a vertical first direction and a second direction, and the first circuit board extends along the first direction;

[0017] The first opening and the second opening are spaced apart along the second direction.

[0018] Optionally, the first connecting member is a plug-in terminal, which is electrically connected to the first circuit board and protrudes away from the first circuit board, and the plug-in terminal is used for electrically connecting to the first port of the electronic device.

[0019] Optionally, the first connecting member is in parallel with the second connecting member.

[0020] Optionally, the circuit board assembly further includes a reinforcing plate, and the second circuit board includes a first side and a second side that are disposed opposite to each other;

[0021] The second connecting member is connected to the first side, and the reinforcing plate is connected to a position on the second side opposite to the second connecting member.

[0022] In a second aspect, an embodiment of the present application provides a battery assembly, which includes a battery and the circuit board assembly described above;

[0023] The battery is electrically connected to the circuit board assembly.

[0024] In a third aspect, an embodiment of the present application provides an electronic device, which includes the battery assembly described above.

[0025] In an embodiment of the present application, the circuit board assembly includes: a first circuit board and a second circuit board, and the second circuit board is connected to the first circuit board; wherein, a first connection member is provided on the first circuit board; the first connection member is used for electrically connecting to a first port of an electronic device; a second connection member is provided on the second circuit board; the second connection member is used for electrically connecting to a second port of the electronic device. In this way, through the first connection member on the first circuit board and the second connection member on the second circuit board, they are respectively connected to the two connection ports of the electronic device, that is, the first port and the second port, to realize a dual-current path between the circuit board assembly and the electronic device, enabling the circuit board assembly to meet the large-current flowing performance between the battery and the electronic device, and achieving the effect of fast charging of the electronic device with large current. There is no need to use a double FPC with double connectors, making the structure of the circuit board assembly relatively simple, improving the assembly convenience, and saving one FPC and one connector, and also reducing the production cost.

[0026] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0028] Figure 1 is one of the schematic structural diagrams of a circuit board assembly according to an embodiment of the present application;

[0029] Figure 2 is another schematic structural diagram of a circuit board assembly according to an embodiment of the present application;

[0030] Figure 3 is one of the schematic structural diagrams of a battery assembly according to an embodiment of the present application;

[0031] Figure 4 is another schematic structural diagram of a battery assembly according to an embodiment of the present application.

[0032] Reference numerals: 10 - first circuit board; 20 - second circuit board; 11 - first connection member; 21 - second connection member; 13 - first opening; 14 - second opening; 15 - plug-in terminal; 22 - first side; 23 - second side; 24 - reinforcing plate; 30 - battery; X - first direction; Y - second direction. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0034] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] Referring to Figures 1 to 2 , a schematic structural diagram of a circuit board assembly according to an embodiment of this application is shown, which may specifically include: a first circuit board 10 and a second circuit board 20, and the second circuit board 20 is connected to the first circuit board 10; wherein,

[0038] A first connecting member 11 is provided on the first circuit board 10; the first connecting member 11 is used for electrically connecting to a first port of an electronic device;

[0039] A second connecting member 21 is provided on the second circuit board 20; the second connecting member 21 is used for electrically connecting to a second port of the electronic device.

[0040] In the embodiment of the present application, the first connecting member 11 on the first circuit board 10 and the second connecting member 21 on the second circuit board 20 are respectively connected to two connection ports of the electronic device, that is, the first port and the second port, to realize a dual-channel current path between the circuit board assembly and the electronic device, so that the circuit board assembly can meet the large-current conduction performance between the battery 30 and the electronic device, and realize the large-current fast charging effect on the electronic device. There is no need to use a dual FPC with dual connectors, which makes the structure of the circuit board assembly relatively simple, improves the assembly convenience, saves one FPC and connector, and also reduces the production cost.

[0041] Specifically, in the embodiment of the present application, the circuit board assembly is a PCM (Protection Circuit Module) of the battery 30, which is used to protect the charging and discharging process of the battery 30, so that the battery 30 has a relatively stable voltage during use, and can prevent problems such as overvoltage, undervoltage and overcurrent of the battery 30.

[0042] Exemplarily, in the embodiment of the present application, the first circuit board 10 can be a PCB (Printed Circuit Board), also known as a rigid board, which has good structural strength, so that the first circuit board 10 can be reliably welded to the battery 30. The second circuit board 20 can be an FPC (Flexible Printed Circuit), also known as a flexible board, which is convenient to bend the second circuit board 20 according to the assembly requirements.

[0043] In the embodiment of the present application, exemplarily, the second connecting member 21 can be a connector, which is used for directly buckling or clamping with the second port of the electronic device to realize electrical connection. In the art, this method is also called BTB (Board-to-Board) connection, which has good reliability and stability. The connector can include a positive terminal and a negative terminal. The positive terminal can be electrically connected to the negative pole of the second port of the electronic device, and the negative terminal can be electrically connected to the positive pole of the second port of the electronic device. Exemplarily, the embodiment of the present application can adopt the method of arranging the first connecting member 11 on the PCB and cooperating with the FPC to carry the BTB to optimize the structure of the circuit board assembly.

[0044] Exemplarily, in the embodiment of the present application, electronic components such as resistive elements, switching elements, fuses, triodes, ICs (Integrated Circuits), etc. can also be provided on the first circuit board 10. The embodiment of the present application can not limit this.

[0045] Optionally, in an embodiment of the present application, the first circuit board 10 includes a circuit layer and an insulating layer covering the circuit layer; an opening is provided on the insulating layer to expose the circuit layer, and the exposed circuit layer forms a gold finger structure, and the gold finger structure is the first connector 11. That is, an opening is provided on the insulating layer to form a window opening, and the circuit layer with conductive performance is exposed to form the gold finger structure, which is used for electrical connection with the first port of the electronic device. The structure is simple and no other electronic components need to be added, which is beneficial to reducing the raw material cost.

[0046] Exemplarily, in an embodiment of the present application, the circuit layer may be a copper foil, which has good electrical conductivity to achieve good electrical performance of the first circuit board 10. The insulating layer may be insulating ink, which is covered on the circuit layer to protect and insulate the circuit layer.

[0047] In some other alternative embodiments of the present application, the circuit board assembly further includes a connection strip, and the connection strip is disposed at the opening of the insulating layer and is electrically connected to the circuit layer to form a gold finger structure. By adding a connection strip at the exposed circuit layer, the connection strip is electrically connected to the circuit layer to form the gold finger structure, so that when the first connector 11 is electrically connected to the first port of the electronic device, it has better reliability and stability.

[0048] Exemplarily, in an embodiment of the present application, the connection strip may be a strip-shaped pad structure. In practical applications, solder paste may be first brushed on the circuit layer exposed at the opening of the insulating layer, and then the connection strip is attached to the solder paste to achieve relatively stable fixation of the connection strip, so that the gold finger structure formed by connecting the connection strip to the circuit layer has better reliability and stability.

[0049] Optionally, in an embodiment of the present application, the opening includes a first opening 13 and a second opening 14 arranged at intervals; the circuit layer exposed at the first opening 13 is a positive gold finger terminal, and the positive gold finger terminal is used for electrical connection with the negative electrode of the first port of the electronic device; the circuit layer exposed at the second opening 14 is a negative gold finger terminal, and the negative gold finger terminal is used for electrical connection with the positive electrode of the first port of the electronic device. In this way, through the electrical connection between the positive gold finger terminal and the negative electrode of the first port, and the electrical connection between the negative gold finger terminal and the positive electrode of the first port, a relatively smooth circuit flow is achieved between the first connector 11 and the first port of the electronic device.

[0050] In an embodiment of the present application, when the opening includes a first opening 13 and a second opening 14 which are spaced apart, correspondingly, the connecting strip may also include a first connecting strip and a second connecting strip. The first connecting strip is disposed at the first opening 13 and electrically connected to the circuit layer to form the positive connection end of the gold finger structure; the second connecting strip is disposed at the second opening 14 and electrically connected to the circuit layer to form the negative connection end of the gold finger structure, so as to achieve a relatively smooth circuit flow between the first connector 11 and the first port of the electronic device.

[0051] Optionally, in an embodiment of the present application, the circuit board assembly has a vertical first direction X and a second direction Y. The first circuit board 10 extends along the first direction X; the first opening 13 and the second opening 14 are spaced apart along the second direction Y. In this way, the positive gold finger terminals formed by the circuit layer exposed outside the first opening 13 and the negative gold finger terminals formed by the circuit layer exposed outside the second opening 14 are spaced apart along the second direction Y, reducing the space occupied in the length direction of the first circuit board 10, being beneficial to the structural compactness of the first circuit board 10, and avoiding the influence on other electronic devices on the first circuit board 10.

[0052] In some other alternative embodiments of the present application, the first connector 11 is a pluggable terminal 15. The pluggable terminal 15 is electrically connected to the first circuit board 10 and protrudes away from the first circuit board 10. The pluggable terminal 15 is used for electrically connecting to the first port of the electronic device. In this way, the pluggable terminal 15 can be directly plugged onto the first circuit board 10, and the two are electrically connected to form the first connector 11 for connecting to the first port of the electronic device, with a simple structure, convenient operation, and easy implementation.

[0053] Exemplarily, in an embodiment of the present application, the pluggable terminal 15 may include a positive terminal and a negative terminal; the positive terminal is electrically connected to the first circuit board 10 and protrudes away from the first circuit board 10, and the positive terminal is used for electrically connecting to the negative electrode of the first port of the electronic device; the negative terminal is electrically connected to the first circuit board 10 and protrudes away from the first circuit board 10, and the negative terminal is used for electrically connecting to the positive electrode of the first port of the electronic device. To achieve a relatively smooth circuit flow between the pluggable terminal 15 and the first port of the electronic device.

[0054] Optionally, in an embodiment of the present application, the first connector 11 and the second connector 21 are connected in parallel. In this way, the circuits between the first connector 11 and the second connector 21 do not interfere with each other. If one of the first connector 11 and the second connector 21 fails, it will not affect the normal current flow of the other one, and the charging performance between the electronic device and the battery 30 can still be achieved.

[0055] Exemplarily, in the embodiment of the present application, the first connector 11 includes a first positive electrode and a first negative electrode electrically connected to the first positive electrode. The second connector 21 includes a second positive electrode and a second negative electrode electrically connected to the second positive electrode. The first positive electrode can be electrically connected to the second positive electrode, and the first negative electrode can be electrically connected to the second negative electrode, so as to realize the parallel connection between the first connector 11 and the second connector 21.

[0056] In the embodiment of the present application, optionally, the circuit board assembly further includes a reinforcing plate 24. The second circuit board 20 includes a first side 22 and a second side 23 disposed opposite to each other. The second connector 21 is connected to the first side 22, and the reinforcing plate 24 is connected to a position opposite to the second connector 21 on the second side 23. In this way, the structure of the position of the second circuit board 20 provided with the second connector 21 is strengthened by the reinforcing plate 24, so that the second connector 21 has better stability and reliability when connected to the second port of the electronic device. Exemplarily, the reinforcing plate 24 can be a steel plate. In addition, other materials can also be used for the reinforcing plate 24, and the specific material of the reinforcing plate 24 in the embodiment of the present application can be not limited.

[0057] In summary, the circuit board assembly described in the embodiment of the present application can at least have the following advantages:

[0058] In the embodiment of the present application, the circuit board assembly includes: a first circuit board and a second circuit board, and the second circuit board is connected to the first circuit board. Among them, a first connector is provided on the first circuit board, and the first connector is used for electrically connecting to the first port of the electronic device. A second connector is provided on the second circuit board, and the second connector is used for electrically connecting to the second port of the electronic device. In this way, through the first connector on the first circuit board and the second connector on the second circuit board, they are respectively connected to the two connection ports of the electronic device, that is, the first port and the second port, to realize a dual-current path between the circuit board assembly and the electronic device, so that the circuit board assembly can meet the large-current conduction performance between the battery and the electronic device, and realize the large-current fast charging effect on the electronic device. There is no need to use a double FPC with double connectors, so that the structure of the circuit board assembly is relatively simple, the assembly convenience is improved, and one FPC and one connector are saved, and the production cost is also reduced.

[0059] Referring to Figures 3 to 4 , the embodiment of the present application also proposes a battery assembly, and the battery assembly includes a battery 30 and the circuit board assembly described above. The battery 30 is electrically connected to the circuit board assembly.

[0060] Specifically, in the embodiment of the present application, the battery 30 can be a rectangular battery, and the circuit board assembly can be connected to the end face of the battery 30. By way of example, the battery 30 can be a lithium-ion battery, a polymer lithium battery, a lithium iron phosphate battery, etc. The embodiment of the present application can not limit the specific type of the battery 30.

[0061] The battery assembly described in the embodiment of the present application can at least include the following advantages:

[0062] In the embodiment of the present application, the battery assembly includes a battery and the circuit board assembly; the battery is electrically connected to the circuit board assembly, and the circuit board assembly includes: a first circuit board and a second circuit board, and the second circuit board is connected to the first circuit board; wherein, a first connecting member is provided on the first circuit board; the first connecting member is used for electrically connecting to a first port of an electronic device; a second connecting member is provided on the second circuit board; the second connecting member is used for electrically connecting to a second port of the electronic device. In this way, by connecting the first connecting member on the first circuit board and the second connecting member on the second circuit board to the two connection ports of the electronic device, that is, the first port and the second port respectively, a dual-path current path between the circuit board assembly and the electronic device is realized, so that the circuit board assembly can meet the large-current conduction performance between the battery and the electronic device, and achieve the effect of fast charging the electronic device with large current. There is no need to use a double FPC with double connectors, so that the structure of the circuit board assembly is relatively simple, the assembly convenience is improved, and one FPC and connector are saved, and the production cost is also reduced.

[0063] The embodiment of the present application provides an electronic device, and the electronic device includes the battery assembly described above.

[0064] By way of example, in the embodiment of the present application, the electronic device can include, but is not limited to, any one of a mobile phone, a tablet computer, and a wearable device. The embodiment of the present application can not limit the specific type of the electronic device.

[0065] The electronic device described in the embodiment of the present application can at least include the following advantages:

[0066] In the embodiment of the present application, the electronic device includes the battery assembly, and the battery assembly includes a battery and the circuit board assembly; the battery is electrically connected to the circuit board assembly, and the circuit board assembly includes: a first circuit board and a second circuit board, and the second circuit board is connected to the first circuit board; wherein, a first connecting member is provided on the first circuit board; the first connecting member is used for electrically connecting to a first port of the electronic device; a second connecting member is provided on the second circuit board; the second connecting member is used for electrically connecting to a second port of the electronic device. In this way, by connecting the first connecting member on the first circuit board and the second connecting member on the second circuit board to the two connection ports of the electronic device, that is, the first port and the second port respectively, a dual-current path between the circuit board assembly and the electronic device is realized, so that the circuit board assembly can meet the large-current flowing performance between the battery and the electronic device, and achieve the effect of fast charging with large current for the electronic device. There is no need to use a double FPC with double connectors, which makes the structure of the circuit board assembly relatively simple, improves the assembly convenience, saves an FPC and a connector, and also reduces the production cost.

[0067] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0068] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A circuit board assembly, characterized in that, The circuit board assembly includes: a first circuit board (10) and a second circuit board (20), and the second circuit board (20) is connected to the first circuit board (10); wherein, a first connecting member (11) is provided on the first circuit board (10); the first connecting member (11) is used for electrically connecting to a first port of an electronic device; a second connecting member (21) is provided on the second circuit board (20); the second connecting member (21) is used for electrically connecting to a second port of an electronic device.

2. The circuit board assembly according to claim 1, wherein The first circuit board (10) includes a circuit layer and an insulating layer covering the circuit layer; an opening is provided on the insulating layer to expose the circuit layer, and the exposed circuit layer forms a gold finger structure, and the gold finger structure is the first connecting member (11).

3. The circuit board assembly according to claim 2, wherein The circuit board assembly further includes a connecting bar, and the connecting bar is disposed at the opening of the insulating layer and electrically connected to the circuit layer to form a gold finger structure.

4. The circuit board assembly according to claim 2, characterized in that, The opening includes a first opening (13) and a second opening (14) which are spaced apart; the circuit layer exposed from the first opening (13) is a positive gold finger terminal, and the positive gold finger terminal is used for electrically connecting to the negative pole of the first port of the electronic device; the circuit layer exposed from the second opening (14) is a negative gold finger terminal, and the negative gold finger terminal is used for electrically connecting to the positive pole of the first port of the electronic device.

5. The circuit board assembly according to claim 4, characterized in that, The circuit board assembly has a vertical first direction (X) and a second direction (Y), and the first circuit board (10) extends along the first direction (X); the first opening (13) and the second opening (14) are spaced apart along the second direction (Y).

6. The circuit board assembly according to claim 1, characterized in that, The first connecting member (11) is a pluggable terminal (15), and the pluggable terminal (15) is electrically connected to the first circuit board (10) and protrudes away from the first circuit board (10), and the pluggable terminal (15) is used for electrically connecting to the first port of the electronic device.

7. The circuit board assembly according to claim 1, wherein, The first connecting member (11) is in parallel with the second connecting member (21).

8. The circuit board assembly according to claim 1, characterized in that, The circuit board assembly further includes a reinforcing plate (24), and the second circuit board (20) includes a first side (22) and a second side (23) which are oppositely arranged; the second connecting member (21) is connected to the first side (22), and the reinforcing plate (24) is connected to a position on the second side (23) opposite to the second connecting member (21).

9. A battery assembly, characterized in that, The battery assembly includes a battery (30) and the circuit board assembly according to any one of claims 1-8; the battery (30) is electrically connected to the circuit board assembly.

10. An electronic device, characterized in that, The electronic device includes the battery assembly according to claim 9.

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