Circuit board assembly and electronic device

Abstract

Provided in the embodiments of the present application are a circuit board assembly and an electronic device. The circuit board assembly comprises a functional module, a socket module, and a conductive member. The functional module comprises a module body and a first electrical connector, the first electrical connector being electrically connected to the module body. The socket module comprises a socket and a second electrical connector, the second electrical connector being electrically connected to the socket. In the thickness direction of the functional module, an overlapping area is present between the second electrical connector and the first electrical connector. The conductive member is disposed in the overlapping area. One end of the conductive member abuts against the first electrical connector, and the other end of the conductive member abuts against the second electrical connector. When the circuit board assembly is disposed within a housing of the electronic device, one of the first electrical connector and the second electrical connector is configured to electrically connect with a main circuit board within the electronic device. The circuit board assembly of the present application does not reduce the performance of the functional module while enabling the electrical connection between the functional module and the main circuit board under the architecture for the electronic device equipped with a large-capacity battery, thereby ensuring the market competitiveness of the electronic device.

Description

Circuit board assemblies and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202510354132.2, filed on March 24, 2025, entitled "Circuit Board Assembly and Electronic Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic technology, and in particular to a circuit board assembly and an electronic device. Background Technology

[0003] The electronic device contains a main circuit board in the area near the top and a secondary circuit board in the area near the bottom. Some modules in the lower part of the electronic device are electrically connected to the main circuit board via the secondary circuit board and third electrical connectors. For example, modules in the lower part of the electronic device include functional modules and card slot modules. Functional modules include audio modules, microphones, etc.

[0004] For foldable phones, the limited overall thickness restricts the electrical connection of these modules to only one side of the secondary circuit board, increasing the space occupied by the secondary circuit board within the device. As electronic devices evolve towards larger-capacity battery architectures, the increased battery size further reduces the footprint of the secondary circuit board and these modules. The card slot in the card slot module is a standard component, and its size cannot be reduced. Therefore, achieving the electrical connection between the aforementioned audio modules and other functional modules and the main circuit board under the current trend towards larger-capacity battery architectures has become a technical challenge that needs to be addressed. Summary of the Invention

[0005] This application provides a circuit board assembly and an electronic device that, while ensuring the electrical connection between the functional modules and the main circuit board in an electronic device with a high-capacity battery architecture, does not reduce the performance of the functional modules, thus ensuring the market competitiveness of the electronic device.

[0006] In a first aspect, embodiments of this application provide a circuit board assembly, the circuit board assembly comprising:

[0007] The functional module includes a module body and a first electrical connector, the first electrical connector being electrically connected to the module body;

[0008] The card slot module includes a card slot and a second electrical connector, the second electrical connector being electrically connected to the card slot; in the thickness direction of the functional module, the second electrical connector and the first electrical connector have an overlapping area;

[0009] A conductive element is disposed in the overlapping area, with one end of the conductive element abutting against the first electrical connector and the other end abutting against the second electrical connector;

[0010] When the circuit board assembly is disposed within the housing of an electronic device, one of the first electrical connector and the second electrical connector is configured to be electrically connected to the main circuit board within the electronic device.

[0011] This application embodiment electrically connects the functional module and the card slot module via a conductive element, and one of the functional module and the card slot module is configured to be electrically connected to the main circuit board, enabling both the functional module and the card slot module to be electrically connected to the main circuit board. Furthermore, compared to the electrical connection schemes of existing electronic devices (such as foldable phones), this application embodiment, through the conductive element, allows the electrical connection between the functional module and the card slot module to bypass the secondary circuit board, reducing the surface area of ​​the secondary circuit board and improving the space utilization of the second receiving cavity. This allows the circuit board assembly and the secondary circuit board to be housed together in the second receiving cavity without reducing the size of the functional module. This solves the problem of ensuring the electrical connection between the functional module and the main circuit board in electronic devices with large-capacity battery architectures without reducing the performance of the functional module, thus ensuring the market competitiveness of the electronic device.

[0012] In some embodiments, the second electrical connector is configured to be connected to the main circuit board via the third electrical connector, so that while the card holder is electrically connected to the main circuit board, the functional module is electrically connected to the main circuit board via the first electrical connector, the conductive element, the second electrical connector, and the third electrical connector, so that the electronic device has the function of the functional module.

[0013] In some embodiments, the card slot module further includes a card tray, which is detachably installed within the card slot and configured to hold an SMI card. Thus, when the card tray for holding the SMI card is installed within the card slot, the card slot can be electrically connected to the main circuit board via a third electrical connector to transmit user identity and authentication information, supporting network electrical connectivity and user identification for the electronic device. Simultaneously, the module body of the functional module is electrically connected to the main circuit board via a first electrical connector, a conductive element, a second electrical connector, and a third electrical connector.

[0014] In some embodiments, when the circuit board assembly is disposed within the housing, the module body and the card holder are sequentially disposed within the second receiving cavity of the housing along the width direction of the housing, a portion of the module body extends toward the side facing the card holder, and a first electrical connector is disposed on the side of the module body facing the card holder.

[0015] By limiting the placement of the module body and the card slot within the second receiving cavity, the size of the second receiving cavity in the length direction of the housing can be compressed, thereby increasing the size of the battery cavity in the length direction of the housing, enabling electronic devices to develop towards larger capacity batteries.

[0016] With the architecture of electronic devices moving towards large-capacity batteries, and based on the realization of electrical connection between functional modules, card slot modules, and secondary circuit boards and main circuit boards, the module body is designed to extend towards one side of the card slot. This allows the module body to make reasonable use of the space within the second receiving cavity of the housing, maximizing the volume of the module body, enhancing the performance of the functional modules, and ensuring the market competitiveness of the electronic devices.

[0017] In some embodiments, the second electrical connector has a mounting area, and a retainer is pressed onto the mounting area; the second electrical connector also has a first electrical connection portion outside the mounting area;

[0018] The first electrical connection portion is located on the side of the mounting area facing the first electrical connector and has an overlapping area with the first electrical connector. The conductive member abuts against the first electrical connection portion so that when the conductive member is located in the overlapping area, the first electrical connector can be connected to the first electrical connection portion through the conductive member, thereby realizing the conduction between the first electrical connector and the second electrical connector.

[0019] In some embodiments, the second electrical connector also has a second electrical connection portion outside the mounting area. This second electrical connection portion is located on the side of the card holder opposite to the module body and is configured to be electrically connected to the main circuit board via a third electrical connector. Thus, while the second electrical connector is connected to the first electrical connector via the first electrical connection portion and the conductive element, it can also be electrically connected to the main circuit board via the second electrical connection portion and the third electrical connector. Since the second electrical connection portion and the first electrical connection portion are located on opposite sides of the card holder relative to the module body, it is convenient for the second electrical connector to be electrically connected to both the module body and the third electrical connector simultaneously.

[0020] In some embodiments, the second electrical connection portion has an electrical connection segment that is electrically connected to the third electrical connector. The first electrical connection portion and the electrical connection segment are located on opposite sides of the card holder in the thickness direction, so that the second electrical connector can make reasonable use of the limited space in the thickness direction of the housing without affecting the size of the second receiving cavity in the width direction of the housing, thereby realizing the electrical connection between the second electrical connector and the third electrical connector as well as the first electrical connector.

[0021] In some embodiments, the second electrical connector is a flexible electrical connector, such that the first electrical connector and the second electrical connector are located on opposite sides of the card holder in the thickness direction.

[0022] In some embodiments, the second electrical connection portion further includes a first bending segment and a second bending segment. One end of the first bending segment is connected to the edge of the mounting area. The other end of the first bending segment is bent to the side of the card holder away from the mounting area and connected to one end of the second bending segment. The other end of the second bending segment is also bent toward the side of the third electrical connector and electrically connected to the electrical connection segment.

[0023] By setting the first bending section and the second bending section, the electrical connection section can be connected to the installation area through the first bending section and the second bending section. At the same time, the electrical connection section can be located at the top of the card holder in the thickness direction, so that the electrical connection section and the first electrical connection part are located on opposite sides of the card holder in the thickness direction.

[0024] In some embodiments, when the circuit board assembly is disposed within the second receiving cavity, the first bent segment is located on the side of the card holder facing the edge of the housing along the width direction of the housing. This effectively utilizes the space of the second receiving cavity in the width direction of the housing, allowing the second electrical connector to bend only once in the width direction of the housing. The second electrical connector only needs to be bent once in the length direction of the housing to form the second bent segment. This reduces the number of bends of the second electrical connector in the length direction of the housing. While enabling the electrical connection segment to the third electrical connector via the electrical connector, it eliminates the need for a large bending space between the card holder and the third electrical connector in the second receiving cavity. This facilitates the compression of the second receiving cavity, allowing the electronic device to conform to the trend towards larger capacity batteries.

[0025] In some embodiments, the circuit board assembly further includes a second pressing member pressed onto the side of the electrical connection section opposite to the card holder;

[0026] The second press-fit component is configured to connect to the housing of the electronic device.

[0027] By pressing the electrical connection section with the second pressing component, the electrical connection section can be prevented from lifting, which can enhance the reliability and stability of the electrical connection between the electrical connection section and the third electrical connection component, and effectively reduce the problem of poor conductivity between the electrical connection section and the third electrical connection component caused by factors such as vibration and impact.

[0028] In some embodiments, the first electrical connector is further provided with a first pressing member on the side opposite to the conductive member. One end of the second pressing member is pressed onto the side of the first pressing member opposite to the conductive member. The end of the second pressing member pressing onto the first pressing member is detachably connected to the housing via a fastener. The other end of the second pressing member is configured to insert into the housing. This allows the second pressing member to be connected to the housing while simultaneously fixing the first pressing member inside the housing, as one end of the second pressing member is pressed onto the first pressing member and detachably connected to the housing via a fastener.

[0029] In some embodiments, the conductor and the socket are located on the side of the second electrical connector facing the first electrical connector, and the conductor is electrically connected to the side of the second electrical connector facing the first electrical connector.

[0030] By mounting the conductive element on the side of the first electrical connection facing the first electrical connection, the conductive element can be pre-fixed onto the second electrical connection. In this way, the conductive element and the card holder module can be pre-installed in the second receiving cavity. When the first electrical connection is installed in the second receiving cavity, pressing the first electrical connection onto the conductive element connects the first and second electrical connections, thereby achieving electrical connection between the module body and the card holder.

[0031] In some embodiments, the conductor is an elastic conductor.

[0032] Compared to inelastic conductive structures, when the conductive element is elastic and the first electrical connector is connected to the first electrical connection part through the elastic conductive element, the elastic conductive element can provide continuous contact pressure to the first electrical connector and the second electrical connector (such as the first electrical connection part), thereby improving the connection stability of the first electrical connector and the second electrical connector.

[0033] In some embodiments, the first electrical connector is a flexible electrical connector; the circuit board assembly further includes a first pressing member, which is pressed onto the side of the first electrical connector opposite to the conductive member.

[0034] By making the first electrical connector a flexible electrical connector, the module body can make full use of the space inside the second receiving cavity when it is connected to the second electrical connector through the first electrical connector, which is beneficial to optimizing the spatial layout of the second receiving cavity.

[0035] By pressing the first electrical connector against the first pressing member, the first electrical connector can be tightly pressed against the bottom of the first pressing member and protrude straight out, avoiding unnecessary bending of the first electrical connector and affecting its service life. Furthermore, pressing the first electrical connector against the first pressing member also prevents the first electrical connector from tilting under the action of the elastic conductive member, ensuring that the first electrical connector is stably pressed onto the conductive member. This enhances the reliability of the conductivity between the first electrical connector and the first electrical connection part, effectively reducing the possibility of poor conductivity caused by vibration, impact, or other factors.

[0036] In some embodiments, a first end of the first press-fit member is electrically connected to the module body. When the circuit board assembly is disposed within the housing, a second end of the first press-fit member is configured to connect to the housing so that the first press-fit member can be fixed within the housing so that the first press-fit member can be better pressed onto the side of the first electrical connector away from the conductor.

[0037] In some embodiments, the first pressing member has a first connecting edge at the first end, which bends toward the side opposite to the first electrical connector along the length direction of the housing and is electrically connected to the module body.

[0038] Compared to the first pressing member being directly connected to the module body at its first end face, when the first pressing member is connected to the module body at its first end through the aforementioned first connecting edge, the connection area between the first end of the first pressing member and the module body is increased. This results in the first pressing member having better support rigidity for the first electrical connector in the thickness direction of the shell, and being stably pressed onto the first electrical connector, which can further enhance the reliability of the conduction between the first electrical connector and the first electrical connection part.

[0039] In some embodiments, the functional module includes an audio module.

[0040] When the audio module and the cassette module are electrically connected via conductive components, and one of the audio module and the cassette module is electrically connected to the main circuit board, the secondary circuit board will not encroach on the volume of the audio module while realizing the electrical connection between the audio module and the main circuit board under the architecture of the electronic device towards a large-capacity battery. This ensures that the volume of the audio module's sound cavity will not be reduced due to the secondary circuit board, and the performance of the audio module will not be reduced, thus ensuring the market competitiveness of the electronic device.

[0041] Secondly, embodiments of this application also provide an electronic device, which includes a housing, a sub-circuit board, and a circuit board assembly as described above. The housing has a second receiving cavity, and the circuit board assembly and the sub-circuit board are both disposed in the second receiving cavity, so that while the functional module and the card slot module are electrically connected to the main circuit board respectively, the performance of the functional module is not reduced, thus ensuring the market competitiveness of the electronic device.

[0042] In some embodiments, the number of housings is at least two, the two housings are rotatably connected, and one housing has a second receiving cavity, so that the electronic device can be configured with circuit board assemblies and sub-circuit boards within the housing while switching between a folded state and a flattened state. Attached Figure Description

[0043] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0044] Figure 2 is an exploded view of an electronic device provided in an embodiment of this application;

[0045] Figure 3 is a schematic diagram of the electrical connections of a circuit board inside an electronic device according to an embodiment of this application;

[0046] Figure 4 is a schematic diagram of a sub-circuit board and some electrically connected modules in the related technology;

[0047] Figure 5 is a schematic diagram of another electronic device in the unfolded state provided in an embodiment of this application;

[0048] Figure 6 is a schematic diagram of another electronic device in a folded state provided in an embodiment of this application;

[0049] Figure 7 is a schematic diagram of another electronic device provided in an embodiment of this application, in an intermediate state between a folded state and a flattened state;

[0050] Figure 8 is a schematic diagram of another sub-circuit board and some electrically connected modules in the related technology;

[0051] Figure 9 is a schematic diagram of a circuit board assembly provided in an embodiment of this application;

[0052] Figure 10 is a schematic diagram of the structure of a circuit board assembly within a housing according to an embodiment of this application;

[0053] Figure 11 is a schematic diagram of the structure of a functional module in a circuit board assembly provided in an embodiment of this application, within the housing;

[0054] Figure 12 is a schematic diagram of the functional modules and the second electrical connector in a circuit board assembly provided in an embodiment of this application, and their structure within the housing.

[0055] Figure 13 is a schematic diagram of the functional module in Figure 12 and the structure of the pressing component on the second electrical connector;

[0056] Figure 14 is a structural schematic diagram of a functional module provided in an embodiment of this application from a first perspective;

[0057] Figure 15 is a structural schematic diagram of a functional module provided in an embodiment of this application from a second perspective;

[0058] Figure 16 is a schematic diagram of part of the circuit board assembly in Figure 10 inside the housing.

[0059] Reference numerals: 10-Electronic device; 20-Housing shell; 21-Middle plate; 22-Frame; 221-Card slot; 23-First receiving cavity; 24-Second receiving cavity; 241-Through groove; 242-First positioning part; 243-Support platform; 2431-Clearing area; 244-Second positioning part; 25-Third receiving cavity; 30-Rear cover; 40-Display screen; 41-Flexible display screen; 42-Rigid display screen; 50-Battery; 60-Main circuit board; 70-Secondary circuit board; 80-Functional module; 81-Audio module; 82-Module body; 83-First electrical connector; 90-Card holder module; 91-Card holder; 92-Second electrical connector; 921-Mounting area; 922-First electrical connection part; 923-Second electrical connection part; 9231-Electrical connection section; 9232-First bending section; 9233-Second bending section; 93-Card holder; 100-Conductor; 110-Spring; 200-Electrical connector; 300-Third electrical connector; 400-Crimping part; 410-First crimping part; 411-First connecting edge; 412-Allowing notch; 420-Second crimping part; 500-First reinforcing part; 600-Second reinforcing part; 610-First mating part; 620-Second mating part; 700-Third reinforcing part; 800-Fastener. Detailed Implementation

[0060] The terminology used in the implementation section of this application is for the purpose of explaining specific embodiments of this application only, and is not intended to limit this application.

[0061] This application provides an electronic device, which may include, but is not limited to, mobile phones, smart wearable devices, etc. Smart wearable devices may include, but are not limited to, smartwatches and smart bracelets. Mobile phones may include, but are not limited to, non-foldable phones and foldable phones. Non-foldable phones can be understood as phones that cannot be folded.

[0062] The following section uses a mobile phone as an example to further explain the structure of electronic devices.

[0063] Figure 1 shows a structural schematic diagram of an electronic device 10 to which this application applies, and Figure 2 shows an exploded view of an electronic device 10. The electronic devices 10 shown in Figure 2 are all non-folding mobile phones.

[0064] Referring to Figures 1 and 2, the electronic device 10 includes a housing 20, which is the main support structure of the electronic device 10.

[0065] The housing 20 includes a middle plate 21 and a frame 22 that are interconnected. The frame 22 can be a square ring structure formed by multiple side frames joined end to end. The frame 22 surrounds the peripheral edge of the middle plate 21 and is electrically connected to the peripheral edge of the middle plate 21.

[0066] For ease of description, the width direction of the housing 20 is defined as the X direction, the length direction of the housing 20 is defined as the Y direction, and the thickness direction of the housing 20 is defined as the Z direction.

[0067] Referring to Figures 1 and 2, in some embodiments, the electronic device 10 further includes a rear cover 30 and a display screen 40. The rear cover 30 covers and is attached to one side of the housing 20 in the thickness direction. The display screen 40 can provide a display interface and an interactive interface with the user for the electronic device 10.

[0068] Figure 3 shows a schematic diagram of the electrical connections of the circuit board inside the electronic device 10. The electronic device 10 in Figure 3 is still a non-folding mobile phone.

[0069] Referring to Figures 2 and 3, the electronic device 10 also includes a circuit board and a battery 50. The circuit board includes a main circuit board 60 and a sub-circuit board 70. Along the length of the housing 20, the side of the housing 20 connected to the rear cover 30 has receiving cavities in corresponding top and bottom regions. The receiving cavity near the top of the housing 20 is referred to as the first receiving cavity 23, and the receiving cavity near the bottom of the housing 20 is referred to as the second receiving cavity 24. The main circuit board 60 is disposed in the first receiving cavity 23, and the sub-circuit board 70 is disposed in the second receiving cavity 24. The sub-circuit board 70 is electrically connected to the main circuit board 60 through a third electrical connector 300.

[0070] A third receiving cavity 25 is also provided on one side of the housing 20 connected to the rear cover 30. Along the length of the housing 20, the third receiving cavity 25 is located between the first receiving cavity 23 and the second receiving cavity 24, and the battery 50 is located in the third receiving cavity 25 so that the battery 50 is disposed in the housing 20 between the main circuit board 60 and the sub-circuit board 70.

[0071] Referring to Figures 2 and 3, the main circuit board 60 typically houses modules such as a processor module, a system-on-a-chip (SoC), a storage module, a communication module, a radio frequency module, and a power management module. These modules are also housed within the first receiving cavity 23. The display screen 40 is electrically connected to the main circuit board 60 and can be used to display various information as well as receive user input.

[0072] The secondary circuit board 70 typically houses a multi-function connector, a card slot module 90, and various functional modules 80. The modules on the secondary circuit board 70 are also housed within the second receiving cavity 24. The multi-function connector can be a USB connector. The USB connector serves as the main charging port for the electronic device 10. Furthermore, the USB connector can also be used for data transfer between two electronic devices 10.

[0073] Card slot module 90 includes card slot 91. Card slot module 90 is configured to install SMI cards. For example, card slot module 90 also includes card tray 93, which is detachably disposed within card slot 91. When card tray 93 carries an SMI (Subscriber Identity Module) card and is installed within card slot 91, the SMI card can be installed within card slot 91. After the SMI card is installed within card slot 91 and electrically connected to main circuit board 60, electronic device 10 can identify the user identity recorded on the SMI card and enable electronic device 10 to access the network.

[0074] Functional module 80 may include audio module 81, microphone, etc.

[0075] For example, the audio module 81 can be a speaker. The audio module 81 is primarily used for sound output. For instance, when a user makes a call using the electronic device 10, the audio module 81 can output the other party's voice, allowing the user to hear the conversation. In addition, the audio module 81 can also be used to play music, videos, and other multimedia content. In the design of the electronic device 10, factors such as the sound quality and volume of the audio module 81 need to be considered to ensure that the audio module 81 provides a good audio experience.

[0076] The microphone is primarily used for sound input. For example, a microphone can be used to capture a user's voice and transmit it to the other party during a call. In addition, a microphone can also be used to receive voice commands from the user to interact with the voice assistant of the electronic device 10.

[0077] Figure 4 shows a schematic diagram of a sub-circuit board 70 and some electrically connected modules in the related art. Among them, the modules shown in Figure 4 include an audio module 81 and a cassette module 90.

[0078] Referring to Figure 4, in related technologies, when the electronic device 10 is a non-folding mobile phone, the audio module 81 is typically electrically connected to the secondary circuit board 70 via a spring contact 110. The card holder 91a is soldered onto the secondary circuit board 70. The secondary circuit board 70 is then connected to the third electrical connector 300a via an electrical connector 200a, and the third electrical connector 300a is also connected to the main circuit board 60, thus achieving electrical connection between the audio module 81, the card holder module 90a, and the main circuit board 60. After the audio module 81 is electrically connected to the main circuit board 60, it can receive signals from the main circuit board 60 and output sound. After the card holder 91a is electrically connected to the main circuit board 60, the SMI card within the card holder 91a can be electrically connected to the main circuit board 60 via the card holder 91a to transmit user identity and authentication information, supporting network electrical connections and user identification for the electronic device 10.

[0079] Both the microphone and the USB connector can be located on the secondary circuit board 70, which is electrically connected to the main circuit board 60. After the microphone is electrically connected to the main circuit board 60, it can transmit the captured audio signals to the main circuit board 60 for processing and transmission. After the USB connector is electrically connected to the main circuit board 60, power transfer is possible to charge the mobile phone.

[0080] Referring to Figure 4, compared to a foldable phone, when the electronic device 10 is a non-foldable phone, the size (thickness) of the housing 20 in the thickness direction is relatively large, so that the modules electrically connected to the sub-circuit board 70 are not limited by the size of the housing 20 in the thickness direction and can be disposed on both sides of the sub-circuit board 70 in the thickness direction.

[0081] Figures 5 to 7 illustrate different configurations of another electronic device 10 to which this application applies. The electronic device 10 shown in Figures 5 to 7 is a foldable mobile phone. Figure 5 illustrates the configuration of the electronic device 10 in its flattened state, Figure 6 illustrates the configuration of the electronic device 10 in its folded state, and Figure 7 illustrates the configuration of the electronic device 10 in an intermediate state between the folded and flattened states.

[0082] The structure of another electronic device 10 is described in detail below with reference to Figures 5 to 7.

[0083] Referring to Figures 5 to 7, when the electronic device 10 is a foldable mobile phone, the number of housings 20 is at least two. The two housings 20 are rotatably connected. Specifically, the two housings 20 are rotatably connected via a pivot mechanism, allowing the electronic device 10 to fold once between the two housings 20. Taking the electronic device 10 having two housings 20 as an example, the folding mechanism of the electronic device 10 will be explained.

[0084] Referring to Figures 5 to 7, the two housings 20 are electrically connected to opposite sides of the rotating shaft mechanism so that the two housings 20 can rotate relative to each other around the rotating shaft mechanism 4, thereby enabling the electronic device 10 to be flattened and folded between the two housings 20.

[0085] In some examples, the two housings 20 can move toward each other in the direction indicated by the arrows in Figure 7 to achieve the folded state shown in Figure 6. Referring to Figure 6, when the electronic device 10 is in the folded state, the two housings 20 are stacked on top of each other. The two housings 20 can move in opposite directions in the direction indicated by the arrows in Figure 7 to achieve the flattened state shown in Figure 5. Referring to Figure 5, when the electronic device 10 is in the flattened state, the two housings 20 are on the same plane.

[0086] To facilitate the flattening and folding of the electronic device 10 between the two housings 20, the display screen 40 can be a flexible display screen 41. The flexible display screen 41 can be simultaneously installed on the same side of both housings 20, and distributed on opposite sides of one of the housings 20 along with the back cover 30. When the electronic device 10 is in a folded state, the flexible display screen 41 is also in a folded state. When the electronic device 10 is in a flattened state, the flexible display screen 41 is also in a flattened state. In this way, the electronic device 10 can change its configuration by rotating the two housings 20 relative to each other, realizing the conversion between folded and flattened states, which can simultaneously meet the requirements of a large display area for the electronic device 10 and convenient portability for the user.

[0087] In some embodiments, a back cover 30 may be provided on the side of each of the two housings 20 opposite to the flexible display screen 41. That is, the electronic device 10 may have two back covers 30.

[0088] Referring to Figure 7, in some embodiments, in addition to the flexible display screen 41, the display screen 40 of the electronic device 10 also includes a rigid display screen 42. Alternatively, only one of the two housings 20 may have a back cover 30, while the other housing 20 has a rigid display screen 42 on the side opposite to the flexible display screen 41. In this case, the rigid display screen 42 is also electrically connected to the main circuit board 60, so that when the electronic device 10 is in a folded state, various information can be displayed through the rigid display screen 42, and information input by the user can also be received.

[0089] In some embodiments, when there are at least two housings 20, a main circuit board 60 and a secondary circuit board 70 may be simultaneously disposed within one of the housings 20. For example, the main circuit board 60 and the secondary circuit board 70 may be disposed within a housing 20 electrically connected to the rear cover 30. Taking the electronic device 10 shown in FIG5 as an example, the housing 20 located on the right side of the illustrated orientation can be understood as a housing 20 electrically connected to the rear cover 30.

[0090] Figure 8 shows a schematic diagram of another sub-circuit board 70 and some electrically connected modules in the related technology.

[0091] Referring to Figure 8, in related technologies, compared to non-foldable phones, when the electronic device 10 is a foldable phone, the overall thickness of the electronic device 10 limits the size (thickness) of the housing 20 in the thickness direction, resulting in the sub-circuit board 70 having to centrally arrange the electrically connected modules on one side. For example, the card holder 91a is fastened to the sub-circuit board 70 via a flexible electrical connector and an electrical connector 200a to achieve electrical connection between the card holder 91a and the sub-circuit board 70. Furthermore, the card holder 91a and other modules are electrically connected to the sub-circuit board 70 on the same side in the thickness direction. This arrangement increases the surface area of ​​the sub-circuit board 70, thereby increasing the layout space occupied by the sub-circuit board 70 within the electronic device 10. This necessitates increasing the size of the second receiving cavity 24 in the length direction of the housing 20.

[0092] As electronic devices 10 (foldable phones) evolve towards an architecture with a large-capacity battery 50, the volume of the battery 50 within the electronic device 10 increases. This increase in battery volume necessitates an increase in the dimension of the third receiving cavity 25 along the length of the housing 20. Thus, while keeping the length of the housing 20 constant, the electronic device 10 typically requires compressing the layout area of ​​the sub-circuit board 70 and the electrically connected modules within the electronic device 10 to reduce the dimension of the second receiving cavity 24 along the length of the housing 20, thereby increasing the dimension of the third receiving cavity 25 along the length of the housing 20. This contradicts the aforementioned requirement for foldable phones to increase the dimension of the second receiving cavity 24 along the length of the housing 20. The card slot 91 is a standard part with uniform dimensions and cannot be reduced in size. Therefore, under the architecture of the electronic device 10 with a large-capacity battery 50, how to achieve the electrical connection between the aforementioned audio module 81 and other functional modules 80 and the main circuit board 60 has become a technical problem that needs to be solved.

[0093] To solve the above-mentioned technical problems, the usual approach is to reduce the size of functional modules 80 such as audio module 81, so that after the second receiving cavity 24 is reduced in size, the sub-circuit board 70 can occupy part of the original volume of the audio module 81 functional module 80 in the second receiving cavity 24. This allows the sub-circuit board 70 to be electrically connected to the modules it is electrically connected to, and then electrically connected to the main circuit board 60.

[0094] However, the reduced size of the functional module 80 can negatively impact its performance, thereby reducing the market competitiveness of the electronic device 10. For example, when the functional module 80 is an audio module 81, it will encroach on the acoustic cavity volume of the audio module 81, affecting the sound quality of the audio module 81, reducing volume, etc., thus making the electronic device 10 less competitive in the market.

[0095] Therefore, in the architecture of the electronic device 10 with a large-capacity battery 50, while solving the electrical connection between the aforementioned functional modules 80 such as the audio module 81 and the main circuit board 60, it is also necessary to avoid affecting the performance of the functional modules 80 in order to ensure the market competitiveness of the electronic device 10.

[0096] In view of this, embodiments of this application provide a circuit board assembly. The circuit board assembly includes a functional module, a card slot module, and a conductive element. The functional module and the card slot module are electrically connected through the conductive element, and one of the functional module and the card slot module is configured to be electrically connected to the main circuit board, so that the functional module and the card slot module are respectively electrically connected to the main circuit board. Furthermore, compared with the electrical connection scheme in FIG8, the embodiments of this application, through the setting of the conductive element, enable the electrical connection between the functional module and the card slot module to be bypassed by the sub-circuit board, thereby reducing the board area of ​​the sub-circuit board and improving the space utilization of the second receiving cavity. This allows the circuit board assembly and the sub-circuit board to be housed together in the second receiving cavity without reducing the size of the functional module. This solves the problem of electrical connection between the functional module and the main circuit board in the architecture of electronic devices moving towards large-capacity batteries without reducing the performance of the functional module, thus ensuring the market competitiveness of the electronic device.

[0097] The electronic device 10 includes the circuit board assembly mentioned in the embodiments of this application. That is, the circuit board assembly can be applied to the aforementioned foldable and non-foldable mobile phones. Both the foldable and non-foldable mobile phones have a receiving cavity within their housing 20. The circuit board assembly and the sub-circuit board 70 of this application are both disposed within the second receiving cavity 24 of the housing 20. This ensures that while the functional module and the card slot module are electrically connected to the main circuit board 60 respectively, the performance of the functional module 80 is not reduced, thus ensuring the market competitiveness of the electronic device 10.

[0098] Since the foldable phone has at least two housings 20, and the two housings 20 are rotatably connected, the electronic device 10 can switch between a folded state and a flattened state. One of the housings 20 may have a second receiving cavity 24. This configuration allows the circuit board assembly and the sub-circuit board 70 to be arranged within the housing 20. The connection between the two housings 20 in the foldable phone is described above and will not be repeated here.

[0099] The following section uses electronic device 10, a foldable mobile phone, as an example to further explain the structure of the circuit board assembly.

[0100] Figure 9 shows a schematic diagram of a circuit board assembly.

[0101] Referring to Figure 9, the circuit board assembly includes a functional module 80, which includes a module body 82 and a first electrical connector 83 connected to the module body 82. The circuit board assembly also includes a card slot module 90, which includes a card slot 91 and a second electrical connector 92. The second electrical connector 92 is electrically connected to the card slot 91. In the thickness direction of the functional module 80, the second electrical connector 92 and the first electrical connector 83 have an overlapping area. The thickness direction of the functional module 80 may be parallel to the thickness direction of the housing 20, as shown in the Z-direction.

[0102] The circuit board assembly also includes a conductive element 100, which is disposed in the overlapping area. One end of the conductive element 100 abuts against the first electrical connector 83, and the other end abuts against the second electrical connector 92. The conductive element 100 enables conduction between the first electrical connector 83 and the second electrical connector 92, thereby connecting the module body 82 and the card holder 91. This allows signals from either the module body 82 or the card holder 91 to be transmitted to the other. The number of conductive elements 100 can be one, two, or similar. In this application, the number of conductive elements 100 is not limited.

[0103] When the circuit board assembly is disposed within the housing 20 of the electronic device 10, one of the first electrical connector 83 and the second electrical connector 92 is configured to be electrically connected to the main circuit board 60 within the electronic device 10.

[0104] Based on the conductive connection between the first electrical connector 83 and the second electrical connector 92, the electrical connection between the functional module 80 and the card slot module 90 and the main circuit board 60 can be achieved by electrically connecting one of the first electrical connector 83 and the second electrical connector 92. For example, when the first electrical connector 83 is electrically connected to the main circuit board 60, the module body 82 can be electrically connected to the main circuit board 60, and the card slot 91 can be electrically connected to the main circuit board 60 through the second electrical connector 92 and the first electrical connector 83, so that the electronic device 10 has the functions of the functional module 80 and the card slot module 90. As another example, when the second electrical connector 92 is electrically connected to the main circuit board 60, the card slot 91 can be electrically connected to the main circuit board 60, and the module body 82 can be electrically connected to the main circuit board 60 through the first electrical connector 83 and the second electrical connector 92.

[0105] Compared to the connection method between the sub-circuit board 70 and the functional module 80 and the card slot module 90 in Figure 8, the circuit board assembly in this embodiment, through the setting of the conductive element 100, allows the electrical connection between the functional module 80 and the card slot module 90 to be bypassed by the sub-circuit board 70. Given the limited overall thickness of the electronic device 10, by bypassing the sub-circuit board 70 in the electrical connection between the functional module 80 and the card slot module 90, the surface area of ​​the sub-circuit board 70 can be reduced, thereby reducing the layout space occupied by the sub-circuit board 70 within the second receiving cavity 24 and improving the space utilization of the second receiving cavity 24. This allows the circuit board assembly to be housed within the second receiving cavity 24 without reducing the size of the functional module 80, thus solving the electrical connection problem between the functional module 80 and the main circuit board 60 in the architecture of the electronic device 10 oriented towards a large-capacity battery 50.

[0106] At the same time, since the layout space occupied by the sub-circuit board 70 in the second receiving cavity 24 is reduced, the sub-circuit board 70 will not encroach on the volume of the functional module 80. Therefore, the performance of the functional module 80 will not be reduced, ensuring the market competitiveness of the electronic device 10.

[0107] Functional module 80 includes audio module 81 or microphone, etc. Module body 82 refers to the structure of functional module 80 excluding the first electrical connector 83. Taking audio module 81 as an example, module body 82 refers to the housing 20 of audio module 81 and the internal components of audio module 81 located within the housing 20. For details, please refer to the structure of existing audio module 81, which will not be described again here.

[0108] When the audio module 81 and the card slot module 90 are electrically connected via the conductor 100, and one of the audio module 81 and the card slot module 90 is electrically connected to the main circuit board 60, while the electronic device 10 is designed with a large-capacity battery 50, the secondary circuit board 70 will not encroach on the volume of the audio module 81. This ensures that the volume of the audio module 81's sound cavity will not be reduced due to the secondary circuit board 70, and the performance of the audio module 81 will not be reduced, thus ensuring the market competitiveness of the electronic device 10.

[0109] The following section uses the audio module 81 as an example to further illustrate the structure of the circuit board assembly.

[0110] The second electrical connector 92 is configured to be electrically connected to the main circuit board 60 via the third electrical connector 300, so that while the card holder 91 is electrically connected to the main circuit board 60, the functional module 80 is also electrically connected to the main circuit board 60 via the first electrical connector 83, the conductor 100, the second electrical connector 92 and the third electrical connector 300, so that the electronic device 10 has the function of the functional module 80 (such as the sound output function of the audio module 81).

[0111] Figure 10 shows a schematic diagram of a circuit board assembly within a housing 20, and Figure 11 shows a schematic diagram of a functional module 80 in a circuit board assembly within a housing 20.

[0112] Referring to Figures 10 and 11, as an example, the second electrical connector 92 can be engaged with one end of the third electrical connector 300 via the electrical connector 200, so that one end of the second electrical connector 92 and the third electrical connector 300 are electrically connected. Simultaneously, the other end of the third electrical connector 300 can be engaged with the main circuit board 60 via the electrical connector 200, thereby electrically connecting the second electrical connector 92 to the main circuit board 60 through the third electrical connector 300. The electrical connector 200 can be a board-to-board (BTB) connector or similar structure that enables two structures to connect and conduct electricity.

[0113] It should be noted that the third electrical connector 300 can also be connected to the second electrical connector 92 and the main circuit board 60 in other ways to achieve electrical connection between the second electrical connector 92 and the main circuit board 60.

[0114] In other embodiments, the first electrical connector 83 may also be configured to be electrically connected to the main circuit board 60 via the third electrical connector 300, thereby allowing the card holder 91 to be electrically connected to the main circuit board 60 via the second electrical connector 92, the first electrical connector 83, and the third electrical connector 300.

[0115] The following section uses the example of the second electrical connector 92 connecting to the main circuit board 60 via the third electrical connector 300 to further illustrate the structure of the circuit board assembly.

[0116] In some embodiments, the card slot module 90 further includes a card tray 93, which is detachably installed within the card slot 91 and configured to hold an SMI card. The connection between the card tray 93 and the card slot 91 can be determined according to the existing structure of the electronic device 10, and will not be described in detail here. Since the second electrical connector 92 is configured to be electrically connected to the main circuit board 60 via a third electrical connector 300, when the card tray 93 holding the SMI card is installed within the card slot 91, the card slot 91 can be electrically connected to the main circuit board 60 via the third electrical connector 300 to transmit user identity and authentication information, supporting network electrical connectivity and user identification for the electronic device 10. Simultaneously, the module body 82 of the functional module 80 is electrically connected to the main circuit board 60 via the first electrical connector 83, the conductor 100, the second electrical connector 92, and the third electrical connector 300.

[0117] Referring to Figures 10 and 11, in some embodiments, when the circuit board assembly is disposed within the housing 20, the module body 82 and the card holder 91 are sequentially arranged within the second receiving cavity 24 of the housing 20 along the width direction of the housing 20. By defining the positions of the module body 82 and the card holder 91 within the second receiving cavity 24, the dimension of the second receiving cavity 24 in the length direction of the housing 20 can be compressed, thereby increasing the dimension of the cavity containing the battery 50 within the housing 20 in the length direction of the housing 20, enabling the electronic device 10 to develop towards a larger capacity battery 50.

[0118] Referring to Figure 10 and in conjunction with Figures 1 and 2, the housing 20 has a card insertion hole 221 at the position corresponding to the card holder 91 for the card tray 93 to enter and exit. The card insertion hole 221 communicates with the second receiving cavity 24. The card tray 93 can pass through the card insertion hole 221 to facilitate the installation of the card tray 93 in the card holder 91, or to facilitate the removal of the card tray 93 from the card holder 91.

[0119] It should be noted that when the module body 82 and the card holder 91 are sequentially arranged in the second receiving cavity 24 of the housing 20 along the width direction of the housing 20, the sub-circuit board 70 can be arranged on the side of the module body 82 near the edge of the housing 20 along the width direction of the housing 20, so that the USB connector electrically connected to the sub-circuit board 70 can be arranged on the side of the edge of the housing 20 in the second receiving cavity 24 to connect with external devices and realize functions such as charging of electronic device 10.

[0120] Referring to Figure 10, a portion of the module body 82 extends toward the card slot 91, and the first electrical connector 83 is located on the side of the module body 82 facing the card slot 91.

[0121] In the architecture of the electronic device 10 with a large-capacity battery 50, and based on the electrical connection between the functional module 80, the card slot module 90, and the sub-circuit board 70 and the main circuit board 60, the module body 82 extends towards the card slot 91, so that the module body 82 can make reasonable use of the space of the housing 20 in the second receiving cavity 24, maximize the volume of the module body 82, enhance the performance of the functional module 80 (such as the audio module 81), and ensure the market competitiveness of the electronic device 10.

[0122] Furthermore, by setting the first electrical connector 83 on the side of the module body 82 facing the card slot 91, the first electrical connector 83 can be positioned close to the second electrical connector 92, so that the first electrical connector 83 can be connected to the second electrical connector 92 through the conductor 100.

[0123] Figure 12 shows a schematic diagram of the structure of a functional module 80 and a second electrical connector 92 in a circuit board assembly within a housing 20.

[0124] Referring to Figure 12 and in conjunction with Figure 10, in some embodiments, the second electrical connector 92 has a mounting area 921, and the card holder 91 is pressed onto the mounting area 921 and connected to the second electrical connector in the mounting area 921, so that the card holder 91 is electrically connected to the functional module 80 and the main circuit board 60 through the second electrical connector 92. The card holder 91 can be connected to the second electrical connector in the mounting area 921 by means of soldering or other methods. The mounting area 921 is determined by the projected area of ​​the card holder 91 on the second electrical connector 92, and the size of this area is not further limited in this application.

[0125] Referring to Figure 12, the second electrical connector 92 also has a first electrical connection portion 922 outside the mounting area 921. The first electrical connection portion 922 is located on the side of the mounting area 921 facing the first electrical connector 83, and has an overlapping area with the first electrical connector 83. The conductor 100 abuts against the first electrical connection portion 922 so that when the conductor 100 is provided in the overlapping area, the first electrical connector 83 can be connected to the first electrical connection portion 922 through the conductor 100, thereby realizing the conduction of the first electrical connector 83 and the second electrical connector 92.

[0126] Referring to Figure 12, in some embodiments, the conductor 100 and the card holder 91 are located on the side of the second electrical connector 92 facing the first electrical connector 83, and the conductor 100 is mounted on the side of the second electrical connector 92 facing the first electrical connector 83. Specifically, the conductor 100 can be mounted on the side of the first electrical connector 922 facing the first electrical connector 83 in the overlapping area using surface mount technology (SMT) or other methods.

[0127] By mounting the conductive member 100 on the side of the first electrical connection portion 922 facing the first electrical connection member 83, the conductive member 100 can be pre-fixed on the second electrical connection member 92. In this way, the conductive member 100 and the card holder module 90 can be installed together in the second receiving cavity 24. When the first electrical connection member 83 is installed in the second receiving cavity 24, pressing the first electrical connection member 83 onto the conductive member 100 can connect the first electrical connection member 83 and the second electrical connection member 92, thereby realizing the connection between the module body 82 and the card holder 91.

[0128] The conductive element 100 can be an elastic conductive element 100. For example, the elastic conductive element 100 may include a metal spring 110, conductive foam, etc. Of course, the conductive element 100 can also adopt a non-elastic conductive structure.

[0129] Compared to an inelastic conductive structure, when the conductive member 100 is an elastic conductive member 100, and the first electrical connector 83 is connected to the first electrical connector 922 through the elastic conductive member 100, the elastic conductive member 100 can provide continuous contact pressure to the first electrical connector 83 and the second electrical connector 92 (e.g., the first electrical connector 922), thereby improving the connection stability of the first electrical connector 83 and the second electrical connector 92.

[0130] The following section uses the elastic conductive element 100 as an example to further illustrate the structure of the circuit board assembly.

[0131] The first electrical connector 83 can be a flexible electrical connector. For example, a flexible electrical connector can be a flexible circuit board. Since flexible electrical connectors are generally lighter than traditional rigid circuit boards, by making the first electrical connector 83 a flexible electrical connector, the module body 82 can be connected to the second electrical connector 92 (such as the first electrical connection part 922) via the first electrical connector 83, which helps to reduce the overall weight of the electronic device 10 and improve portability. Furthermore, since the flexible electrical connector is bendable and foldable, it can realize complex wiring in a limited space. By making the first electrical connector 83 a flexible electrical connector, the module body 82 can also make full use of the space within the second receiving cavity 24 when it is connected to the second electrical connector 92 via the first electrical connector 83, which is beneficial to optimizing the spatial layout of the second receiving cavity 24.

[0132] Figure 13 shows a schematic diagram of the structure of the functional module 80 and the second electrical connector 92 in Figure 12, with the pressing component 400 installed.

[0133] Referring to Figure 13, in some embodiments, the circuit board assembly further includes a pressing member 400, which includes a first pressing member 410. When the first electrical connector 83 is a flexible electrical connector, the first pressing member 410 is pressed onto the side of the first electrical connector 83 opposite to the conductive member 100. By pressing the first electrical connector 83 onto the first pressing member 410, the first electrical connector 83 can be tightly attached to the bottom of the first pressing member 410 and protrude straight out, avoiding unnecessary bending of the first electrical connector 83 and affecting its service life. Furthermore, by pressing the first electrical connector 83 with the first pressing member 410, the first electrical connector 83 can be prevented from tilting under the action of the conductive member 100 (such as the elastic conductive member 100), so that the first electrical connector 83 is stably pressed on the conductive member 100, thereby enhancing the reliability of the conduction between the first electrical connector 83 and the first electrical connection part 922, and effectively reducing the problem of poor conduction between the first electrical connector 83 and the first electrical connection part 922 caused by factors such as vibration and impact.

[0134] Referring to Figure 13, in some embodiments, the first end of the first pressing member 410 can be connected to the module body 82. When the circuit board assembly is disposed in the second receiving cavity 24, the second end of the first pressing member 410 is configured to be connected to the housing 20 so that the first pressing member 410 can be fixed in the housing 20 so that the first pressing member 410 can be better pressed onto the side of the first electrical connector 83 away from the conductor 100.

[0135] Figures 14 and 15 show schematic diagrams of the structure of a functional module 80 from different perspectives. In both Figures 14 and 15, the functional module 80 is an audio module 81.

[0136] Referring to Figures 14 and 15, the first pressing member 410 may have a first connecting edge 411 at its first end. Along the length direction of the housing 20, the first connecting edge 411 is bent toward the side opposite to the first electrical connector 83 and connected to the module body 82. Specifically, the first connecting edge 411 can be connected to the housing 20 of the module body 82 by welding, bonding, or other methods.

[0137] Of course, the first pressing part 410 can also be directly connected to the module body 82 at its first end face.

[0138] Compared to the first pressing member 410 being directly connected to the module body 82 at its first end face, when the first pressing member 410 is connected to the module body 82 at its first end through the aforementioned first connecting edge 411, the connection area between the first end of the first pressing member 410 and the module body 82 is increased. This results in the first pressing member 410 having better support rigidity for the first electrical connector 83 in the thickness direction of the housing 20, and being stably pressed onto the first electrical connector 83. This further enhances the reliability of the conduction between the first electrical connector 83 and the first electrical connection part 922.

[0139] A first connecting edge 411 is shown in Figures 14 and 15.

[0140] In other embodiments, without affecting the development of the electronic device 10 towards a large-capacity battery 50, when the circuit board assembly and the sub-circuit board 70 are disposed within the second receiving cavity 24, and the second receiving cavity 24 has available space on the side of the functional module 80 facing the battery 50 along the length direction of the housing 20, the first pressing member 410 may also have a second connecting edge at its first end. The second connecting edge may also be connected to the housing 20 of the module body 82 by means of welding, bonding, or other methods.

[0141] Compared to the first pressing member 410 being connected to the module body 82 only through the first connecting edge 411, when the first pressing member 410 is connected to the module body 82 at the first end through the first connecting edge 411 and the second connecting edge, the connection area between the first pressing member 410 and the module body 82 can be further increased, and the supporting rigidity of the first pressing member 410 to the first electrical connector 83 in the thickness direction of the housing 20 can be enhanced, so as to further enhance the reliability of the first electrical connector 83 and the first electrical connection part 922 conducting.

[0142] Referring to Figures 14 and 15, the pressing member 400 also includes a second pressing member 420, through which the second end of the first pressing member 410 can be pressed and connected to the housing 20 and fixed within the housing 20. This will be further explained below in conjunction with the structure of the second pressing member 420.

[0143] Of course, the second end of the first pressing member 410 can also be connected to the housing 20 by means of snap-fit, fastener 800, etc., and is not fixed inside the housing 20 by the second pressing member 420. In this application, the connection method between the second end of the first pressing member 410 and the housing 20 is not further limited.

[0144] Figure 16 shows a schematic diagram of a portion of the circuit board assembly in Figure 10 within the housing 20. The second pressing member 420 is not shown in Figure 16.

[0145] Referring to Figure 16, in some embodiments, the second electrical connector 92 has a second electrical connection portion 923 outside the mounting area 921, located on the side of the card holder 91 opposite to the module body 82. The second electrical connection portion 923 is configured to be electrically connected to the main circuit board 60 via a third electrical connector 300.

[0146] In this way, while the second electrical connector 92 is connected to the first electrical connector 83 through the first electrical connector 922 and the conductive member 100, the second electrical connector 92 can also be electrically connected to the main circuit board 60 through the second electrical connector 923 and the third electrical connector 300. Since the second electrical connector 923 and the first electrical connector 922 are located on both sides of the card holder 91 relative to the module body 82, it is convenient for the second electrical connector 92 to be electrically connected to both the module body 82 and the third electrical connector 300 simultaneously.

[0147] It should be noted that the second electrical connection part 923 can be fastened to the third electrical connection part 300 through the electrical connector 200. The end of the third electrical connection part 300 opposite to the second electrical connection part 923 is fastened to the main circuit board 60, so that the second electrical connection part 923 is electrically connected to the main circuit board 60 through the third electrical connection part 300.

[0148] Referring to Figure 16, in some embodiments, the second electrical connection portion 923 has an electrical connection segment 9231 electrically connected to the third electrical connection member 300. The first electrical connection portion 922 and the electrical connection segment 9231 may be located on opposite sides of the card holder 91 in the thickness direction. For example, as shown in Figure 16, the first electrical connection portion 922 may be located at the bottom of the card holder 91 in the thickness direction, and the electrical connection segment 9231 may be located at the top of the card holder 91 in the thickness direction. When the circuit board assembly is disposed within the second receiving cavity 24, the thickness direction of the card holder 91 is parallel to the thickness direction of the housing 20.

[0149] By setting the first electrical connection part 922 and the electrical connection segment 9231 on opposite sides of the card holder 91 in the thickness direction, the second electrical connector 92 can make reasonable use of the limited space in the thickness direction of the housing 20 without affecting the size of the second receiving cavity 24 in the width direction of the housing 20, so as to realize the electrical connection between the second electrical connector 92, the third electrical connector 300 and the first electrical connector 83.

[0150] The second electrical connector 92 can be a flexible electrical connector. Because flexible electrical connectors are bendable and foldable, they can achieve complex wiring within a limited space. Therefore, by making the second electrical connector 92 a flexible electrical connector, a portion of the second electrical connector 92 can be bent to the top of the card holder 91 to form a second electrical connection portion 923, so that the first electrical connection portion 922 and the second electrical connection portion 923 are located on opposite sides of the card holder 91 in the thickness direction.

[0151] Referring again to Figure 11, the second receiving cavity 24 has a through groove 241 on the side facing the battery 50. One end of the third electrical connector 300 connected to the second electrical connector 923 can pass through the through groove 241 and be disposed within the second receiving cavity 24. The electrical connector segment 9231 is stacked on the side of the third electrical connector 300 opposite to the bottom wall of the second receiving cavity 24. That is, the electrical connector segment 9231 is located above the third electrical connector 300 in the thickness direction of the housing 20. By stacking the electrical connector segment 9231 on the third electrical connector 300, it is easy for the electrical connector segment 9231 to be fastened to the third electrical connector 300 through the electrical connector 200, thereby realizing the fastening of the second electrical connector 923 and the third electrical connector 300.

[0152] Referring to Figure 16 and in conjunction with Figure 13, the second electrical connection portion 923 further includes a first bent segment 9232 and a second bent segment 9233. One end of the first bent segment 9232 is connected to the edge of the mounting area 921, and the other end of the first bent segment 9232 is bent to the side of the card holder 91 away from the mounting area 921 and connected to one end of the second bent segment 9233. The other end of the second bent segment 9233 is also bent toward the side of the third electrical connector 300 and electrically connected to the electrical connection segment 9231. The arrangement of the first bent segment 9232 and the second bent segment 9233 allows the electrical connection segment 9231 to be connected to the mounting area 921 via the first bent segment 9232 and the second bent segment 9233. Simultaneously, the electrical connection segment 9231 can be located at the top of the card holder 91 in the thickness direction, so that the electrical connection segment 9231 and the first electrical connection portion 922 are located on opposite sides of the card holder 91 in the thickness direction.

[0153] When the circuit board assembly is disposed within the second receiving cavity 24, the first bent segment 9232 is located on the side of the card holder 91 facing the edge of the housing 20 along the width direction of the housing 20, so that the first bent segment 9232 is as close as possible to the edge of the housing 20 along the width direction of the housing 20. For example, the first bent segment 9232 is located on the side of the card holder 91 away from the module body 82 along the width direction of the housing 20, so that the first bent segment 9232 is located on the side of the card holder 91 facing the edge of the housing 20.

[0154] Because the electronic device 10 is designed with a bend radius (R-angle) for flexible electrical connectors, this R-angle can be understood as the minimum bending radius of the flexible electrical connector when bent or folded. In the design of the electronic device 10, the bend radius of the flexible electrical connector is typically several times its thickness (e.g., 5-6 times). By setting the bend radius, it is ensured that the flexible electrical connector will not be damaged or fail when bent.

[0155] When the electrical connection segment 9231 is located at the top of the card holder 91 in the thickness direction and is electrically connected to the third electrical connector 300 through the electrical connector 200, the second electrical connector 92 is required to first bend to the position of the side wall of the card holder 91, and then bend to the position of the third electrical connector 300 through the second bend, so as to facilitate the electrical connection between the second electrical connector 92 and the third electrical connector 300 through the electrical connector 200.

[0156] If the first bending segment 9232 and the second bending segment 9233 are both located on the side of the card holder 91 facing the third electrical connector 300 in the length direction of the housing 20, then the second receiving cavity 24 needs to reserve a large bending space between the card holder 91 and the third electrical connector 300 so that the second electrical connector 92 can be bent on both sides within the bending space.

[0157] However, with the development trend of the electronic device 10 being a foldable mobile phone and the electronic device 10 moving towards a large-capacity battery 50, the accommodating cavity of the circuit board assembly and the sub-circuit board 70 is compressed, so that the second accommodating cavity 24 cannot reserve enough bending space between the card holder 91 and the third electrical connector 300 for the second electrical connector 92 to bend on both sides.

[0158] This embodiment of the application, by positioning the first bending segment 9232 along the width direction of the housing 20 on the side of the card holder 91 facing the edge of the housing 20, effectively utilizes the space of the second receiving cavity 24 in the width direction of the housing 20. This allows the second electrical connector 92 to bend only once in the width direction of the housing 20, and the second electrical connector 92 only needs to be bent once in the length direction of the housing 20 to form the second bending segment 9233. This reduces the number of bends of the second electrical connector 92 in the length direction of the housing 20. While enabling the electrical connection segment 9231 to be electrically connected to the third electrical connector 300 through the electrical connector 200, it also eliminates the need for a large bending space between the card holder 91 and the third electrical connector 300 in the second receiving cavity 24. This facilitates the compression of the second receiving cavity 24, allowing the electronic device 10 to conform to the development trend towards a large-capacity battery 50.

[0159] Referring to Figures 16 and 13, in some embodiments, when the second electrical connector 92 is a flexible electrical connector, the circuit board assembly further includes a second press-fit member 420, which is pressed onto the side of the electrical connector segment 9231 opposite to the card holder 91. The second press-fit member 420 is configured to connect to the housing 20 of the electronic device 10.

[0160] By pressing the electrical connection segment 9231 with the second pressing component 420, the electrical connection segment 9231 can be prevented from tilting up, which can enhance the reliability and stability of the electrical connection between the electrical connection segment 9231 and the third electrical connection component 300, and effectively reduce the problem of poor conductivity between the electrical connection segment 9231 and the third electrical connection component 300 caused by factors such as vibration and impact.

[0161] In some embodiments, one end of the second pressing member 420 is pressed onto the side of the first pressing member 410 away from the conductor 100, so that while the second pressing member 420 is connected to the housing 20, the first pressing member 410 can be connected to the housing 20 and fixed in the second receiving cavity 24 through the second pressing member 420, which simplifies the connection between the first pressing member 410 and the housing 20.

[0162] One end of the second pressing member 420, which presses against the first pressing member 410, can be detachably connected to the housing 20 via a fastener 800. The other end of the second pressing member 420 is configured to insert into the housing 20. For example, the other end of the second pressing member 420 can be inserted and buckled into the housing 20. The first pressing member 410 has a clearance notch 412 at the position corresponding to the fastener 800. This allows the second pressing member 420 to be connected to the housing 20, and the first pressing member 410 to be fixed inside the housing 20 while one end of the second pressing member 420 is pressed against the first pressing member 410 and detachably connected to the housing 20 via the fastener 800. The fastener 800 is located at the clearance notch 412.

[0163] Fastener 800 is a screw, bolt, etc. The detachable connection between fastener 800 and housing 20 can be understood as a threaded connection.

[0164] Referring again to Figure 13, in some embodiments, the side of the electrical connection segment 9231 facing the second pressing member 420 also has a first reinforcing member 500. The first reinforcing member 500 is disposed between the electrical connection segment 9231 and the second pressing member 420 to reinforce the electrical connection segment 9231. The first reinforcing member 500 can be a reinforcing steel plate, etc.

[0165] Referring again to Figure 13, in some embodiments, the circuit board assembly further includes a second reinforcing member 600, which is disposed on the side of the mounting area 921 of the second electrical connector 92 opposite to the card holder 91. The second reinforcing member 600 can be a reinforcing steel plate, etc. The second reinforcing member 600 has a first mating portion 610, which is configured to engage with a first positioning portion 242 on the housing 20. Through the positioning connection of the first mating portion 610 and the first positioning portion 242, the second electrical connector 92 can be positioned within the housing 20 so that the second electrical connector 92 can be fixed within the housing 20 by the reinforcing member. Furthermore, a portion of the second electrical connector 92 can protrude directly from the second reinforcing member 600, avoiding unnecessary bending of the second electrical connector 92 and affecting its service life.

[0166] As shown in Figure 13, the first mating part 610 can be a through hole, and the first positioning part 242 can be a protrusion on the cavity wall of the housing 20 in the second receiving cavity 24. When the protrusion passes through the through hole, the first mating part 610 and the first positioning part 242 can be considered to be mated and connected. Of course, the first mating part 610 can also be a protrusion on the second reinforcing member 600, and the first positioning part 242 can be a concave structure on the cavity wall of the housing 20 in the second receiving cavity 24. When the protrusion is located in the concave structure, the first mating part 610 and the first positioning part 242 can also be considered to be mated and connected.

[0167] Referring again to Figure 13, one end of the third electrical connector 300 passes through the through groove 241 and is mounted in the second receiving cavity 24. Along the thickness direction of the housing 20, the first mating part 610 and the first positioning part 242 can be provided on the side of the third electrical connector 300 away from the electrical connection section 9231, so that the electrical connection section 9231 can effectively utilize the space of the housing 20 in the thickness direction to achieve the positioning of the second reinforcing member 600.

[0168] Referring again to Figure 13, the bottom wall of the second receiving cavity 24 has a support platform 243 near the through slot 241. A third reinforcing member 700 is attached to the side of the third electrical connector 300 away from the electrical connection section 9231. The third reinforcing member 700 can be a reinforcing steel plate, etc. Both ends of the third reinforcing member 700 are provided on the support platform 243. The support platform 243 has a clearance area at the position corresponding to the first positioning part 242. The first positioning part 242 is provided in the clearance area 2431 so that along the thickness direction of the housing 20, the first mating part 610 and the first positioning part 242 are provided on the side of the third electrical connector 300 away from the electrical connection section 9231.

[0169] It should be noted that the second reinforcing member 600 may also be provided with a second mating part 620. For example, the second mating part 620 may be located on the side of the second reinforcing member 600 away from the third electrical connector 300. The housing 20 may also be provided with a second positioning part 244 at the position corresponding to the second mating part 620. Based on the mating connection between the first mating part 610 and the first positioning part 242, the second electrical connector 92 can be better positioned within the housing 20 through the mating connection between the second mating part 620 and the second positioning part 244, so that the second electrical connector 92 can be better fixed within the housing 20 by the reinforcing member. The structure and mating connection of the second mating part 620 and the second positioning part 244 may be the same as those of the first mating part 610 and the first positioning part 242, and will not be described again here.

[0170] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "electrical connection" should be interpreted broadly. For example, they can refer to a fixed electrical connection, an indirect connection through an intermediate medium, or the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0171] The terms "first," "second," "third," "fourth," etc. (if present) 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.

Claims

1. A circuit board assembly, characterized in that, include: A functional module includes a module body and a first electrical connector, wherein the first electrical connector is electrically connected to the module body. The card slot module includes a card slot and a second electrical connector, the second electrical connector being electrically connected to the card slot; in the thickness direction of the functional module, the second electrical connector and the first electrical connector have an overlapping area; A conductive element is disposed in the overlapping area, with one end of the conductive element abutting against the first electrical connector and the other end abutting against the second electrical connector; When the circuit board assembly is disposed within the housing of the electronic device, one of the first electrical connector and the second electrical connector is configured to be electrically connected to the main circuit board within the electronic device.

2. The circuit board assembly according to claim 1, characterized in that, The second electrical connector is configured to connect to the main circuit board via a third electrical connector.

3. The circuit board assembly according to claim 1 or 2, characterized in that, The card slot module also includes a card tray, which is detachably installed within the card slot and configured to hold an SMI card.

4. The circuit board assembly according to claim 2, characterized in that, When the circuit board assembly is disposed within the housing, the module body and the card holder are sequentially arranged in the second receiving cavity of the housing along the width direction of the housing, a portion of the module body extends toward the side of the card holder, and the first electrical connector is disposed on the side of the module body toward the card holder.

5. The circuit board assembly according to claim 4, characterized in that, The second electrical connector has a mounting area, and the card holder is pressed onto the mounting area; the second electrical connector also has a first electrical connection portion outside the mounting area; The first electrical connection portion is located on the side of the mounting area facing the first electrical connector and has the overlapping area with the first electrical connector, and the conductive member abuts against the first electrical connection portion.

6. The circuit board assembly according to claim 5, characterized in that, The second electrical connector also has a second electrical connection portion outside the mounting area. The second electrical connection portion is located on the side of the card holder away from the module body. The second electrical connection portion is configured to be electrically connected to the main circuit board via a third electrical connector.

7. The circuit board assembly according to claim 6, characterized in that, The second electrical connection portion has an electrical connection segment that is electrically connected to the third electrical connection member, and the first electrical connection portion and the electrical connection segment are located on opposite sides of the card holder in the thickness direction.

8. The circuit board assembly according to claim 7, characterized in that, The second electrical connector is a flexible electrical connector.

9. The circuit board assembly according to claim 8, characterized in that, The second electrical connection portion further includes a first bending section and a second bending section. One end of the first bending section is connected to the edge of the mounting area. The other end of the first bending section is bent to the side of the card holder away from the mounting area and connected to one end of the second bending section. The other end of the second bending section is also bent toward the side of the third electrical connector and electrically connected to the electrical connection section.

10. The circuit board assembly according to claim 9, characterized in that, When the circuit board assembly is disposed in the second receiving cavity, the first bent section is located on the side of the card holder facing the edge of the housing along the width direction of the housing.

11. The circuit board assembly according to any one of claims 8-10, characterized in that, It also includes a second pressing member, which is pressed onto the side of the electrical connection section opposite to the card holder; The second press-fit element is configured to connect to the housing of the electronic device.

12. The circuit board assembly according to claim 11, characterized in that, The first electrical connector is provided with a first pressing member on the side opposite to the conductive member. One end of the second pressing member is pressed onto the side of the first pressing member opposite to the conductive member. The end of the second pressing member pressed onto the first pressing member is detachably connected to the housing by a fastener. The other end of the second pressing member is configured to be inserted into the housing.

13. The circuit board assembly according to any one of claims 1-11, characterized in that, The conductive element and the card holder are located on the side of the second electrical connector facing the first electrical connector, and the conductive element is installed on the side of the second electrical connector facing the first electrical connector for electrical connection.

14. The circuit board assembly according to any one of claims 1-13, characterized in that, The conductive element is an elastic conductive element.

15. The circuit board assembly according to claim 14, characterized in that, The first electrical connector is a flexible electrical connector; the circuit board assembly further includes a first pressing member, which is pressed onto the side of the first electrical connector opposite to the conductive member.

16. The circuit board assembly according to claim 15, characterized in that, The first end of the first pressing member is electrically connected to the module body, and when the circuit board assembly is disposed in the housing, the second end of the first pressing member is configured to be connected to the housing.

17. The circuit board assembly according to claim 16, characterized in that, The first pressing member has a first connecting edge at its first end. Along the length direction of the housing, the first connecting edge is bent toward the side opposite to the first electrical connector and is electrically connected to the module body.

18. The circuit board assembly according to any one of claims 1-17, characterized in that, The functional modules include an audio module.

19. An electronic device, characterized in that, The device includes a housing, a sub-circuit board, and a circuit board assembly as described in any one of claims 1-18, wherein the housing has a second receiving cavity, and the circuit board assembly and the sub-circuit board are both disposed within the second receiving cavity.

20. The electronic device according to claim 19, characterized in that, The number of housings is at least two, and the two housings are rotatably connected, with one of the housings having the second receiving cavity.

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