Electronic device

Abstract

The present application relates to the field of electronic communications, and discloses an electronic device. The electronic device comprises a main board, an auxiliary board assembly, and a battery assembly; the main board, the auxiliary board assembly, and the battery assembly are arranged in parallel; the battery assembly is arranged between the main board and the auxiliary board assembly; the auxiliary board assembly is electrically connected to the battery assembly; the auxiliary board assembly comprises a charging interface and a plurality of charging chips; and the charging interface is electrically connected to the plurality of charging chips.

Description

electronic devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 29, 2023, with application number 202311863722.5 and invention name “Electronic Device”. The entire contents of the Chinese patent application are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of electronic communication technology, and specifically relates to an electronic device. Background Art

[0004] Fast-charging technology for electronic devices (such as mobile phones) significantly reduces waiting times for charging, improving the user experience. With the continuous advancement of fast-charging technology, some manufacturers have launched charging power of 200W and above, significantly reducing charging times. The 200W charging solution works by boosting the input current (10A to 20A) through an integrated circuit (IC) before charging the electronic device's battery. The charging system uses three ICs in parallel to boost the current individually.

[0005] Among the three ICs in the related technology, two are installed on the main board and the other is installed on the sub-board. During the charging process, after the current needs to enter the sub-board, a part of it is boosted by the IC on the sub-board and input into the battery, and the other part is transmitted to the main board through the sub-board and the main FPC, and then boosted by the two ICs on the main board and input into the battery.

[0006] However, the above method increases the thickness of the electronic device and easily causes the electronic device to overheat because the charging current is transmitted through the main flexible printed circuit (FPC), and the main FPC and the battery are stacked. In addition, the motherboard is equipped with two ICs, which will occupy space on the motherboard and affect the motherboard layout area. Summary of the Invention

[0007] The purpose of the embodiments of the present application is to provide an electronic device that can solve problems such as overheating during charging.

[0008] An embodiment of the present application provides an electronic device, comprising: a main board, a sub-board assembly and a battery assembly, wherein the main board, the sub-board assembly and the battery assembly are arranged in parallel, the battery assembly is arranged between the main board and the sub-board assembly, and the sub-board assembly is electrically connected to the battery assembly; the sub-board assembly comprises a charging interface and multiple charging chips, and the charging interface is electrically connected to the multiple charging chips.

[0009] The embodiment of the present application can shorten the charging path and reduce the use of charging devices by changing the setting position of the charging chip and adjusting the orientation of the battery assembly accordingly, thereby reducing the cost and the overall thickness of the electronic device, and reducing heat generation. In addition, it can also alleviate the problem of the charging chip occupying the mainboard space and affecting the mainboard layout area. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG1 is a disassembled schematic diagram of a first form of electronic device disclosed in an embodiment of the present application;

[0011] FIG2 is a schematic diagram of the assembly of the first form of electronic equipment disclosed in an embodiment of the present application;

[0012] FIG3 is a schematic structural diagram of the first form of the adapter plate disclosed in an embodiment of the present application;

[0013] FIG4 is a schematic diagram of the assembly of the first form of functional module, the first sub-board, the second sub-board, the adapter board and other components disclosed in an embodiment of the present application;

[0014] FIG5 is a cross-sectional view along AA in FIG4 ;

[0015] FIG6 is a schematic diagram of the first form of charging solution disclosed in an embodiment of the present application;

[0016] FIG7 is a disassembled schematic diagram of a second type of electronic device disclosed in an embodiment of the present application;

[0017] FIG8 is a schematic diagram of the assembly of the second form of electronic equipment disclosed in an embodiment of the present application;

[0018] FIG9 is a schematic structural diagram of a second form of an adapter plate disclosed in an embodiment of the present application;

[0019] FIG10 is a schematic diagram of the assembly of the second form of functional module, the first sub-board, the second sub-board, the adapter board and other components disclosed in an embodiment of the present application;

[0020] FIG11 is a cross-sectional view along line BB in FIG10 ;

[0021] FIG12 is a schematic diagram of a second charging solution disclosed in an embodiment of the present application;

[0022] FIG13 is a partial disassembly diagram of a third type of electronic device disclosed in an embodiment of the present application;

[0023] FIG14 is a schematic structural diagram of a first sub-plate of a third form disclosed in an embodiment of the present application;

[0024] FIG15 is a schematic structural diagram of a first sub-panel and a battery assembly according to a third embodiment of the present application;

[0025] FIG16 is a schematic diagram of the third charging solution disclosed in an embodiment of the present application.

[0026] Explanation of the accompanying symbols: 01-interface; 02-sub-board; 03-main board; 04-battery; 05-battery connector 1; 06-battery connector 2; 07-battery connector 3; 08-IC 1; 09-IC 2; 010-IC 3; 011-main FPC; 012-charging FPC; 100-main board; 200-main board; 300-sub-board assembly; 310-first sub-board; 320-second sub-board; 330-adapter board; 340-first connector; 350-third connector; 360-fourth connector; 370-charging chip; 380-charging interface; 400-battery assembly; 410-battery body; 420-second connector; 430-protective circuit board; 500-electrical connector; 600-functional module; 610-connecting hole; 620-avoidance hole; 710-double-sided tape; 810-pressed steel sheet; 910-Fasteners. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0029] The embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0030] In the related art, a 200W charging solution for electronic devices has three charging ICs, two of which are placed on the main board 03 and the other on the sub-board 02 . Based on this arrangement, when the electronic device is charging, the current enters the sub-board 02 through the interface 01, and is diverted at the sub-board 02. Part of the current (3.3A) enters the IC-08 of the sub-board 02, is amplified and increased in current (6.6A), and is transmitted to the battery connector 1 05 through the charging FPC 012, and finally enters the battery 04; the other part of the current (6.6A) is transmitted to the main board 03 through the main FPC 011, and after being diverted again by the main board 03, it enters IC-09 (3.3A) and IC-010 (3.3A) respectively. After the current is amplified by IC-09 and IC-010 (6.6A and 6.6A) respectively, it enters the battery 04 through the battery connector 2 06 and the battery connector 3 07 respectively. The total current entering the battery 04 is about 20A (6.6A+6.6A+6.6A).

[0031] However, due to the high current in the 200W high-power charging solution, this charging solution has the following defects:

[0032] 1. Due to the limited maximum output current of the IC, the charging solution uses three ICs. Each of the three ICs occupies a certain area. Placing two of them on the main board 03 will affect the layout area of ​​the main board 03.

[0033] 2. Since the head of battery 04 faces main board 03, each battery connector can only be placed near the head of battery 04 to ensure that current can enter from the head of battery 04. However, one of the ICs is placed on sub-board 02. After being amplified by the IC on sub-board 02, part of its current needs to be transmitted to battery 04 through charging FPC 012. Charging FPC 012 and battery 04 are overlapped, and the thickness of charging FPC 012 is larger than that of main FPC 011. This will increase the thickness of the entire device and increase the cost.

[0034] 3. Since the large current passes through the main FPC011 and the charging FPC012, both generate a lot of heat, causing the battery 04 area of ​​the entire device to become seriously hot, affecting the user's experience during charging.

[0035] To alleviate the above-mentioned problems, the present invention discloses an electronic device, which can be a mobile phone, a portable computer, an e-book, a smart wearable device, or other electronic product. Referring to Figures 1 to 16 , the disclosed electronic device includes a mainboard 200, a sub-board assembly 300, and a battery assembly 400.

[0036] The main board 200 , the sub-board assembly 300 and the battery assembly 400 are arranged in parallel, and the battery assembly 400 is arranged between the main board 200 and the sub-board assembly 300 , and the sub-board assembly 300 is electrically connected to the battery assembly 400 .

[0037] To securely mount components such as the mainboard 200, sub-board assembly 300, and battery assembly 400, the electronic device may further include a main mount 100. This mount provides a mounting base for the mainboard 200, sub-board assembly 300, and battery assembly 400, ensuring their stable installation. It should be noted that the specific structure of the main mount 100 can be referenced in the prior art and will not be elaborated upon here.

[0038] Considering the need to charge the electronic device, the sub-board assembly 300 may include a charging interface 380 and multiple charging chips 370, and the charging interface 380 is electrically connected to the multiple charging chips 370. Exemplarily, the charging interface 380 may be a Type-C interface, a lightning interface, or the like.

[0039] Optionally, the sub-board assembly 300 may also include multiple first connectors 340, and the multiple first connectors 340 are electrically connected to the multiple charging chips 370 one by one. Accordingly, the battery assembly 400 may include multiple second connectors 420, and the multiple second connectors 420 are connected to the multiple first connectors 340 one by one.

[0040] In addition, the first connector 340 and the second connector 420 are detachably connected, such as by plug-in, snap-on, or snap-on engagement, to facilitate assembly and disassembly between the sub-board assembly 300 and the battery assembly 400. It should be noted that one of the first connector 340 and the second connector 420 can be considered a male end, and the other can be considered a female end. The mating of the male and female ends allows for stable current transmission and facilitates assembly and disassembly.

[0041] Based on the above settings, when an external charging component is used to charge an electronic device, the charging end of the external charging component can be inserted into the charging interface 380. The current can enter the sub-board assembly 300 through the charging interface 380 and be diverted through the sub-board assembly 300 to form multiple smaller sub-currents. Each sub-current enters the corresponding charging chip 370 and is boosted by the charging chip 370. After passing through multiple charging chips 370, multiple larger sub-currents can be formed. The multiple larger sub-currents after boosting enter the battery assembly 400 respectively to quickly charge the battery assembly 400.

[0042] Furthermore, after being stepped up by the multiple charging chips 370, the current can be transmitted to the corresponding multiple second connectors 420 through the multiple first connectors 340, and finally enter the battery assembly 400 through the multiple second connectors 420, thereby achieving rapid charging of the battery assembly 400. The multiple second connectors 420 can be respectively arranged at the end of the battery assembly 400 facing the sub-board assembly 300, thereby shortening the connection distance between the battery assembly 400 and the sub-board assembly 300, thereby shortening the current path.

[0043] In order to alleviate the problem of charging heat and reduce the use of components, the embodiment of the present application has redesigned the setting form of the battery assembly 400 and the layout form of multiple charging chips 370 to shorten the charging path (i.e., the distance traveled by the current during charging). In this way, on the one hand, the heat generated by the current during the charging process can be reduced, thereby alleviating the charging heat problem. On the other hand, the charging devices, such as the charging plate (i.e., the charging FPC), etc., can be reduced, thereby reducing the thickness of the entire machine and reducing costs.

[0044] Based on the above situation, in an embodiment of the present application, the battery assembly 400 is arranged between the main board 200 and the sub-board assembly, and the sub-board assembly 300 is electrically connected to the battery assembly 400, so that the distance between the sub-board assembly 300 and the battery assembly 400 can be shortened; compared with the method of charging the battery assembly 400 from the end where the main board 200 is located, the embodiment of the present application can greatly shorten the current path during the charging process, so that there is no need to set up a charging plate, which is beneficial to reducing the thickness of the whole machine and reducing costs, and there is no heating of the charging plate, which is beneficial to alleviating the heating problem during charging.

[0045] In summary, the charging solution in the embodiment of the present application eliminates the charging plate (i.e., charging FPC), which can reduce the thickness and cost of the entire machine and improve the user experience; the mainboard 200 no longer has a charging chip 370, but instead places multiple charging chips 370 on the sub-board assembly 300, thereby increasing the layout area of ​​the mainboard 200, or reducing the area of ​​the mainboard 200 accordingly, providing accommodation space for a larger capacity battery assembly 400, reducing the cost and overall thickness of the electronic device, and reducing heat generation.

[0046] 1 to 12 , in some embodiments, the sub-board assembly 300 may include a first sub-board 310, a second sub-board 320, and an adapter board 330. The first sub-board 310 and the second sub-board 320 are electrically connected via the adapter board 330 to enable signal transmission. Furthermore, both the first sub-board 310 and the second sub-board 320 are electrically connected to the battery assembly 400.

[0047] For example, the first sub-board 310 can be a rigid circuit board, the second sub-board 320 can be a rigid circuit board, and the adapter board 330 can be a flexible circuit board. This design can ensure that some electrical components can be set on the first sub-board 310 and the second sub-board 320, and the adapter board 330 can be flexibly deformed to adapt to the layout of the first sub-board 310 and the second sub-board 320.

[0048] The charging interface 380 may be provided on the first sub-board 310 for cooperating with an external charging component so that current can be first transmitted to the first sub-board 310 and then transmitted to the second sub-board 320 through the adapter board 330 .

[0049] Taking into account that the sub-board assembly 300 includes multiple charging chips 370, when arranging the multiple charging chips 370, some of the multiple charging chips 370 can be arranged on the first sub-board 310, and another part of the multiple charging chips 370 can be arranged on the second sub-board 320. That is, distributing the multiple charging chips 370 on the first sub-board 310 and the second sub-board 320 can, to a certain extent, alleviate the situation where the multiple charging chips 370 are located on the same sub-board, thereby increasing the occupied area and heat generation.

[0050] For example, the number of charging chips 370 provided on the first sub-board 310 and the number of charging chips 370 provided on the second sub-board 320 may be equal to or different from each other, such as greater than, less than or equal to each other, and the specific number may be selected according to actual needs.

[0051] In addition, the charging chip 370 provided on the first sub-board 310 or the second sub-board 320 can be arranged in a manner according to actual needs, such as being located on the same side or different sides, on the edge or in the middle, in a dispersed arrangement or a concentrated arrangement, etc. As long as the needs are met, the specific arrangement form is not limited.

[0052] In some embodiments, the sub-board assembly 300 may include multiple first connectors 340. When arranging the multiple first connectors 340, some of the multiple first connectors 340 may be arranged on the first sub-board 310, and another part of the multiple first connectors 340 may be arranged on the second sub-board 320. That is, distributing the multiple first connectors 340 on the first sub-board 310 and the second sub-board 320 can, to a certain extent, alleviate the situation where the multiple first connectors 340 are all located on the same sub-board, thereby increasing the occupied area and heat generation.

[0053] Exemplarily, the number of first connectors 340 provided on the first sub-board 310 and the number of first connectors 340 provided on the second sub-board 320 may be equal to or different from each other, such as greater than, less than or equal to each other, and the specific number may be selected according to actual needs.

[0054] In addition, the first connector 340 provided on the first sub-board 310 or the second sub-board 320 can be arranged in a manner according to actual needs, such as being located on the same side or different sides, on the edge or in the middle, in a dispersed arrangement or a concentrated arrangement, etc. As long as the needs are met, the specific arrangement form is not limited.

[0055] To ensure normal charging, the charging chip 370 provided on the first sub-board 310 is electrically connected one-to-one with the first connector 340 provided on the first sub-board 310. In this way, the current can be boosted by the charging chip 370 and transmitted to the second connector 420 of the battery assembly 400 through the corresponding first connector 340, so that this part of the current can be charged into the battery assembly 400.

[0056] For example, the arrangement of the charging chip 370 and the first connector 340 on the first sub-board 310 can be selected according to actual working conditions, and the specific arrangement is not limited.

[0057] Similarly, the charging chip 370 provided on the second sub-board 320 is electrically connected one-to-one with the first connector 340 provided on the second sub-board 320. In this way, the current can be boosted by the charging chip 370 and transmitted to the second connector 420 of the battery assembly 400 through the corresponding first connector 340, so that this part of the current can be charged into the battery assembly 400.

[0058] For example, the arrangement of the charging chip 370 and the first connector 340 on the second sub-board 320 can be selected according to actual working conditions, and the specific arrangement is not limited.

[0059] 1, 2, 7, and 8, in an embodiment of the present application, the electronic device may further include a functional module 600, which is stacked with the sub-board assembly 300. For example, the functional module 600 may be a sound module, a vibration module, or the like, and may also be a module having other functions.

[0060] To secure the first and second sub-panels 310, 320, in the embodiment of the present application, the first and second sub-panels 310, 320 can be located on opposite sides of the functional module 600. This allows the functional module 600 to support, secure, and protect the first and second sub-panels 310, 320, ensuring the stability and integrity of the first and second sub-panels 310, 320. For example, the first and second sub-panels 310, 320 can be connected to the functional module 600 using bonding, plug-in connection, snap-on connection, or screw connection, respectively.

[0061] Optionally, the housing of the functional module 600 may be provided with a mounting area. The mounting area may be provided with structures such as grooves, holes, protrusions, etc., or may be a plane, so as to support the first sub-board 310 and the second sub-board 320 .

[0062] Referring to Figures 3 to 5 , one embodiment of the present application illustrates a fixing method in which the adapter plate 330 is fixed to the functional module 600, the second sub-plate 320 is fixed to the surface of the adapter plate 330 facing away from the functional module 600, and the charging chip 370 is fixed to the surface of the second sub-plate 320 facing away from the adapter plate 330. This method allows for secure installation of the second sub-plate 320 and ensures the proper placement of the charging chip 370. Furthermore, the adapter plate 330 not only supports and secures the second sub-plate 320, but also electrically connects the second sub-plate 320 to the first sub-plate 310 to facilitate signal transmission.

[0063] Optionally, the second sub-plate 320 and the adapter plate 330 may be welded together, while the adapter plate 330 and the functional module 600 may be adhesively bonded together. For example, double-sided tape 710 may be connected between the adapter plate 330 and the functional module 600 to secure the adapter plate 330 to the functional module 600 via the double-sided tape 710.

[0064] In some embodiments, the first sub-board 310 and the adapter board 330 are located on opposite sides of the functional module 600. For example, the first sub-board 310 and the adapter board 330 can be staggered in a plane perpendicular to the thickness direction of the electronic device, thereby facilitating a reduction in the total thickness of the first sub-board 310, the adapter board 330, and the functional module 600, thereby reducing the thickness of the entire device.

[0065] In order to achieve electrical connection between the first sub-board 310 and the adapter board 330, a avoidance hole 620 can be opened in a part of the functional module 600. After at least a part of the adapter board 330 passes through the avoidance hole 620, it is connected to the first sub-board 310 to facilitate signal transmission. Therefore, the functional module 600 is avoided from blocking the first sub-board 310 and the adapter board 330.

[0066] Optionally, the sub-board assembly 300 may also include a third connector 350 and a fourth connector 360, wherein the third connector 350 is arranged on the first sub-board 310, and the fourth connector 360 is arranged on the adapter board 330. Thus, at least a portion of the adapter board 330 passes through the avoidance hole 620 and is connected to the third connector 350 through the fourth connector 360, so as to facilitate signal transmission between the adapter board 330 and the first sub-board 310.

[0067] Optionally, the third connector 350 and the fourth connector 360 are detachably connected, such as by plug-in, snap-on, or snap-on engagement, to facilitate assembly and disassembly between the adapter board 330 and the first sub-board 310. It should be noted that one of the third connector 350 and the fourth connector 360 can be considered a male end, and the other can be considered a female end. The mating of the male and female ends enables stable current transmission and facilitates assembly and disassembly.

[0068] In an embodiment of the present application, in order to prevent the first connector 340 and the second connector 420 from being accidentally separated, a pressing steel sheet 810 and a fastener 910 can be additionally provided. The first connector 340 or the second connector 420 is pressed by the pressing steel sheet 810, and the pressing steel sheet 810 is fastened by the fastener 910, thereby effectively preventing the first connector 340 and the second connector 420 from loosening or falling off, thereby ensuring the stability of the connection between the first connector 340 and the second connector 420.

[0069] Similarly, in order to prevent the third connector 350 and the fourth connector 360 from accidentally separating, a pressing steel sheet 810 and a fastener 910 can be added. The third connector 350 or the fourth connector 360 can be pressed by the pressing steel sheet 810, and the pressing steel sheet 810 can be fastened by the fastener 910, thereby effectively preventing the third connector 350 and the fourth connector 360 from loosening or falling off, thereby ensuring the stability of the connection between the third connector 350 and the fourth connector 360.

[0070] For one of the above fixing methods, the assembly process of each component is as follows:

[0071] Assemble the main board 200 and the first sub-board 310 on the main board 100;

[0072] Assemble the electrical connector 500 to achieve signal connection between the main board 200 and the first sub-board 310;

[0073] Assemble the battery assembly 400 and connect the first connectors 340 on the first sub-board 310 to the corresponding second connectors 420 on the battery assembly 400;

[0074] Fix the side of the adapter board 330 to the functional module 600, with the second sub-board 320 and the charging chip 370 thereon facing away from the functional module 600. Pass at least a portion of the adapter board 330 through the avoidance hole 620, and connect the fourth connector 360 to the third connector 350 to form a final assembly.

[0075] Assembling the assembly to connect the first connector 340 on the second sub-board 320 and the corresponding second connector 420 on the battery assembly 400;

[0076] Assemble the pressed steel sheet 810 and the fastener 910 to press the connectors together and complete the assembly.

[0077] Referring to Figures 9 to 11 , another fixing method in an embodiment of the present application is to fix both the adapter plate 330 and the second sub-plate 320 to the functional module 600 to further improve firmness and stability. For example, the adapter plate 330 can be fixed to the functional module 600 using double-sided tape 710 , and the second sub-plate 320 can also be fixed to the functional module 600 using adhesive.

[0078] The second sub-board 320 is located on the surface of the adapter board 330 facing the functional module 600, and the charging chip 370 is fixed on the surface of the second sub-board 320 facing away from the adapter board 330. This method can shield the charging chip 370 to alleviate the heat dissipation of the charging chip 370 directly to the main board 100, or can effectively alleviate the problem of damage to the charging chip 370 during maintenance.

[0079] In order to further reduce the thickness of the entire machine, a connecting hole 610 can be provided on the side of the functional module 600 facing the connecting plate. As shown in Figure 7, the connecting hole 610 is connected to the inner cavity of the functional module 600. After installation, the charging chip 370 is located in the inner cavity of the functional module 600. In this way, the charging chip 370 can be inserted into the inner cavity of the functional module 600 through the connecting hole 610, and the charging chip 370 can be accommodated by the inner cavity, thereby avoiding the increase in the thickness of the entire machine due to the thickness of the charging chip 370.

[0080] To prevent air leakage from the inner cavity of the functional module 600, the adapter plate 330 and the functional module 600 may be sealed by gluing to avoid air leakage from the inner cavity or the adapter plate 330 falling off from the functional module 600 when the electronic device falls.

[0081] For the other fixing method mentioned above, the assembly process of each component is as follows:

[0082] Assemble the main board 200 and the first sub-board 310 on the main board 100;

[0083] Assemble the electrical connector 500 to achieve signal connection between the main board 200 and the first sub-board 310;

[0084] Assemble the battery assembly 400 and connect the first connectors 340 on the first sub-board 310 to the corresponding second connectors 420 on the battery assembly 400;

[0085] Fix the side of the adapter board 330 to the functional module 600 so that the second sub-board 320 and the charging chip 370 thereon face the functional module 600 and the charging chip 370 is located in the inner cavity of the functional module 600. The inner cavity of the functional module 600 is sealed (e.g., by gluing), and finally assembled into an assembly.

[0086] Assembling the assembly to connect the first connector 340 on the second sub-board 320 and the corresponding second connector 420 on the battery assembly 400;

[0087] Assemble the pressed steel sheet 810 and the fastener 910 to press the connectors together and complete the assembly.

[0088] In some embodiments, the sub-board assembly 300 may include three charging chips 370, two of which are located on the first sub-board 310 and one on the second sub-board 320. Consequently, a portion of the current transmitted to the first sub-board 310 via the charging port 380 can be directly boosted through the two charging chips 370 on the first sub-board 310 before entering the battery assembly 400. The remaining portion of the current transmitted to the first sub-board 310 is transmitted to the second sub-board 320 via the adapter board 330, where it is boosted through one of the charging chips 370 on the second sub-board 320 before entering the battery assembly 400. This allows the input current to be split, boosted, and then charged separately into the battery assembly 400, enabling a higher-power charging mode and improving charging efficiency.

[0089] Specifically, the current after the current boosting can be transmitted to the corresponding second connector 420 through the first connector 340 corresponding to each charging chip 370, and finally enter the battery assembly 400 through the second connector 420.

[0090] In other embodiments, the sub-panel assembly 300 may also include other numbers of charging chips 370, and the number of charging chips 370 distributed on the first sub-panel 310 and the second sub-panel 320 may be selected according to actual working conditions and is not specifically limited.

[0091] 6 and 12 , taking the charging power of 200W, the input current of 10A, the sub-board assembly 300 including three charging chips 370, the first sub-board 310 having two charging chips 370, and the second sub-board 320 having one charging chip 370 as an example, the charging process of the above charging scheme is described in detail, specifically:

[0092] The current (10A) enters the first sub-board 310 through the charging interface 380 and is divided on the first sub-board 310 to form three currents, namely 3.3A, 3.3A, and 3.3A. The two 3.3A currents are boosted by the two charging chips 370 on the first sub-board 310 to form 6.6A and 6.6A respectively. After the current is amplified, it is transmitted to the two corresponding second connectors 420 of the battery assembly 400 through the corresponding two first connectors 340 on the first sub-board 310. Finally, Ultimately, two 6.6A currents are transmitted to the battery assembly 400. Another 3.3A current on the first sub-board 310 is transmitted via the adapter board 330 to the second sub-board 320. A charging chip 370 on the second sub-board 320 boosts the current to a 6.6A current. After current amplification, it is transmitted through a corresponding first connector 340 on the second sub-board 320 to a corresponding second connector 420 on the battery assembly 400, ultimately transmitting a single 6.6A current to the battery assembly 400. Therefore, the total current entering the battery assembly 400 is 20A, achieving 200W charging and improving charging efficiency.

[0093] Referring to Figures 13 to 16 , in other embodiments of the present application, the sub-board assembly 300 may include a first sub-board 310 electrically connected to the battery assembly 400. A charging port 380 may be provided on the first sub-board 310, and multiple charging chips 370 are all provided on the first sub-board 310. Compared to the above embodiment, the second sub-board 320 and adapter board 330 are not required. Instead, all charging chips 370 are provided on the first sub-board 310, thereby reducing the number of components and lowering structural complexity and cost. Of course, compared to the related art, this embodiment also eliminates the charging FPC, which helps reduce the thickness and cost of the entire device and improve the user experience. Furthermore, the absence of the charging chip 370 on the mainboard 200 increases the layout area of ​​the mainboard 200, or reduces the volume of the mainboard 200, thereby increasing the battery capacity. Furthermore, the charging current does not pass through the main FPC, so no heat is generated during charging, alleviating the problem of heating in the battery area during charging.

[0094] Optionally, the multiple charging chips 370 can be distributed on at least one side of the first sub-board 310, for example, all located on the same side of the first sub-board 310, or some located on one side and others located on another side. The specific arrangement can be determined based on the size of the first sub-board 310 and the locations of the electrical components on the first sub-board 310.

[0095] Similarly, the plurality of first connectors 340 can be distributed on at least one side of the first sub-board 310. For example, the plurality of first connectors 340 can be located on the same side of the first sub-board 310, or some can be located on one side and others on another side. The specific arrangement can be determined based on the size of the first sub-board 310 and the locations of the electrical components on the first sub-board 310.

[0096] For the other embodiments above, the assembly process of each component is as follows:

[0097] Assemble the main board 200 and the electrical connector 500 on the main board 100;

[0098] Connect one of the first connectors 340 on the first sub-board 310 to the corresponding second connector 420 on the battery assembly 400. The other two first connectors 340 are not connected to the corresponding second connectors 420 for the time being to facilitate subsequent processes.

[0099] Assemble the battery assembly 400 and the first sub-board 310 on the main board 100, connect the electrical connector 500 to the first sub-board 310, and then connect the remaining two first connectors 340 to the corresponding second connectors 420;

[0100] Assemble the pressed steel sheet 810 and the fastener 910 to press the connectors together and complete the assembly.

[0101] In some embodiments, the battery assembly 400 may further include a battery body 410 and a protective circuit board 430, wherein the protective circuit board 430 is disposed at one end of the battery body 410 facing the sub-board assembly 300. Based on this, the protective circuit board 430 can control the charging voltage, charging current, discharging voltage, and discharging current of the battery body 410 to prevent damage to the battery body 410 caused by overvoltage or overcurrent.

[0102] In addition, the plurality of second connectors 420 may be electrically connected to the protection circuit board 430 to facilitate current transmission.

[0103] It should be noted here that the end of the battery assembly 400 where the protective circuit board 430 is provided is the charging end. By setting the charging end of the battery assembly 400 toward the sub-board assembly 300, the embodiment of the present application can shorten the charging path and reduce the components for transmitting current, thereby reducing the thickness of the entire machine, reducing the structural complexity, reducing the cost, and also reducing the heat generation area, which is conducive to alleviating the problem of heat generation during charging.

[0104] In addition, in the embodiment of the present application, the main board 200 is an integrated circuit board, which is used to control and connect various modules of the electronic device; the sub-board assembly 300 is an additional circuit board of the electronic device, which is used to enhance the function of the electronic device, improve the performance or repair faulty components; the battery assembly 400 is an energy storage part, which can absorb and release electrical energy.

[0105] To enable signal transmission between the main board 200 and the sub-board assembly 300, the electronic device may further include an electrical connector 500. The main board 200 and the sub-board assembly 300 may be electrically connected via the electrical connector 500 to facilitate signal transmission. For example, the electrical connector 500 may be a flexible printed circuit board (i.e., a main FPC). Alternatively, it may be a rigid printed circuit board, a wire, or the like, which is not specifically limited herein.

[0106] Based on the above-mentioned arrangement of the battery assembly 400 and the arrangement of the plurality of charging chips 370 on the sub-board assembly 300, the electrical connector 500 no longer transmits the charging current, which can reduce the width of the electrical connector 500, thereby reducing costs. Furthermore, the electrical connector 500 no longer generates heat during charging, thereby reducing the heat generated in the area where the battery assembly 400 is located and improving user experience.

[0107] 16 , taking the charging power of 200W, the input current of 10A, and the sub-board assembly 300 including three charging chips 370, all of which are provided on the first sub-board 310 as an example, the charging process of the above-mentioned charging scheme is described in detail, specifically:

[0108] The 10A current enters the first sub-board 310 through the charging port 380 and is split there, forming three currents of 3.3A, 3.3A, and 3.3A, respectively. The three 3.3A currents are then amplified by the three charging chips 370 on the first sub-board 310, generating currents of 6.6A, 6.6A, and 6.6A, respectively. After amplification, the currents are transmitted through the three corresponding first connectors 340 on the first sub-board 310 to the three corresponding second connectors 420 of the battery assembly 400, ultimately transmitting the three 6.6A currents to the battery assembly 400. Therefore, the total current entering the battery assembly 400 is 20A, achieving 200W charging and improving charging efficiency.

[0109] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An electronic device, comprising: Main board, secondary board assembly and battery assembly, the main board, the secondary board assembly and the battery assembly are arranged in parallel, the battery assembly is arranged between the main board and the secondary board assembly, and the secondary board assembly is electrically connected to the battery assembly; The secondary board assembly includes a charging interface and a plurality of charging chips, and the charging interface is electrically connected to the plurality of charging chips.

2. The electronic device according to claim 1, wherein, The secondary board assembly includes a first secondary board, a second secondary board and an adapter board, the first secondary board is electrically connected to the second secondary board through the adapter board, and the charging interface is arranged on the first secondary board; Some of the plurality of charging chips are arranged on the first secondary board, and another part of the plurality of charging chips is arranged on the second secondary board; Both the first secondary board and the second secondary board are electrically connected to the battery assembly.

3. The electronic device according to claim 2, wherein, The electronic device further includes a functional module, and the functional module is stacked with the secondary board assembly; The first secondary board and the second secondary board are arranged on two opposite sides of the functional module.

4. The electronic device according to claim 3, wherein, The adapter board is fixed to the functional module; The second secondary board is fixed to the surface of the adapter board facing away from the functional module, and the charging chip is fixed to the surface of the second secondary board facing away from the adapter board.

5. The electronic device according to claim 3, wherein, Both the adapter board and the second secondary board are fixed to the functional module; A communication hole is provided on one side of the functional module facing the adapter board, and the communication hole communicates with the inner cavity of the functional module; The second secondary board is fixed to the surface of the adapter board facing the functional module, and the charging chip is fixed to the surface of the second secondary board facing away from the adapter board and is located in the inner cavity.

6. The electronic device according to claim 4, wherein, A relief hole is provided in a part of the functional module, and at least part of the adapter board passes through the relief hole.

7. The electronic device according to claim 4 or 5, wherein The second secondary board is fixedly welded to the adapter board, and the adapter board is fixedly adhered to the functional module; And / or, the second secondary board is a rigid circuit board, and the adapter board is a flexible circuit board.

8. The electronic device according to any one of claims 2 to 6, wherein, The secondary board assembly includes three charging chips, two of the charging chips are arranged on the first secondary board, and the other charging chip is arranged on the second secondary board.

9. The electronic device according to claim 1, wherein, The secondary board assembly includes a first secondary board, the first secondary board is electrically connected to the battery assembly, and the charging interface is arranged on the first secondary board; All of the plurality of charging chips are arranged on the first secondary board.

10. The electronic device according to claim 9, wherein, The plurality of charging chips are distributed on at least one surface of the first secondary board.

11. The electronic device according to claim 1, wherein, The battery assembly further includes a battery body and a protection circuit board; The protection circuit board is arranged at one end of the battery body facing the secondary board assembly.

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