Electric connection device and computing equipment

Abstract

The embodiment of the utility model provides an electric connection device and computing equipment. The electric connection device comprises a flexible circuit board and an electric connector. The flexible circuit board comprises a main body and a connection branch group. The connecting branch group comprises a plurality of bendable connecting branches. The plurality of connection branches are connected to the main body. The electric connector comprises a bayonet socket and a plurality of butt joint terminals. The butt joint terminal is arranged on the bayonet socket. And the connecting branch group and the electric connector are correspondingly arranged. And the plurality of connecting branches are correspondingly and electrically connected with the plurality of butt-joint terminals respectively. According to the electric connection device, good air flow fluidity in the air channel can be guaranteed, and good heat dissipation is guaranteed.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electrical connectors, and in particular to an electrical connection device and a computing device. Background Art

[0002] Computing devices usually use air cooling to dissipate heat and cool internal devices. A circuit board, a power-consuming device disposed on the circuit board, and a fan module are provided inside the computing device. The heat generated by the power-consuming device located on the air duct can be carried away by the flowing airflow generated by the fan module. A connecting cable module for signal transmission is also provided inside the computing device. The connecting cable module includes a cable and an electrical connector. There are a large number of cables led out of the electrical connector. The routing path of the cable overlaps with the air duct, so that the cable is in the air duct, and thus a large number of cables will block the airflow. The higher the signal transmission rate, the thicker the cable required, so that the cable will have a more obvious blocking effect on the airflow, affecting heat dissipation. Utility Model Content

[0003] The embodiments of the present application provide an electrical connection device and a computing device, which can ensure good air flow in the air duct and good heat dissipation.

[0004] A first aspect of an embodiment of the present application provides an electrical connection device, which includes a flexible circuit board and an electrical connector.

[0005] The flexible circuit board includes a main body and a connecting branch group. The connecting branch group includes a plurality of bendable connecting branches. The plurality of connecting branches are connected to the main body. The electrical connector includes a socket and a plurality of docking terminals. The docking terminals are arranged on the socket. The connecting branch group is arranged correspondingly to the electrical connector. The plurality of connecting branches are electrically connected to the docking terminals respectively.

[0006] The electrical connection device of the embodiment of the present application is used to realize signal transmission. The electrical connection device includes a flexible circuit board for transmitting signals and an electrical connector. When the electrical connection device is applied to a computing device, the main body of the flexible circuit board can be electrically connected to the printed circuit board. The electrical connector can be connected and fixed to the printed circuit board. The electrical connector is used to plug with other matching electrical connectors. The thickness of the flexible circuit board itself is relatively small, and it is easy to bend and deform under force, so that the flexible circuit board can be bent and routed to effectively avoid the air duct space. The main body of the flexible circuit board itself is relatively small in thickness. The main body of the flexible circuit board can be arranged close to the printed circuit board, so that there is a relatively small spacing between the main body of the flexible circuit board and the printed circuit board, which is conducive to the flexible circuit board avoiding the air duct space and reducing the windward area of ​​the flexible circuit board. Therefore, the flexible circuit board of the embodiment of the present application can effectively reduce the occupancy rate of the air duct space, reduce the blocking effect on the airflow, ensure good airflow fluidity in the air duct, and ensure good heat dissipation.

[0007] In a possible implementation manner, the connecting branch includes a narrowing transition section, and the narrowing transition section is connected to the main body.

[0008] The size of the narrowed transition section is relatively small, which is beneficial to reducing the windward area of ​​the flexible circuit board. When the connecting branch is subjected to a bending moment, the narrowed transition section is relatively easy to bend and deform, which is beneficial to reducing the difficulty of bending and deformation of the connecting branch, and is also beneficial to reducing the rebound stress of the connecting branch in the bending deformation state.

[0009] In a possible implementation manner, a dimension of the narrowing transition section close to one end of the main body is smaller than a dimension of the narrowing transition section away from one end of the main body.

[0010] In a possible implementation, the narrowed transition section is located outside the electrical connector.

[0011] In a possible implementation, the flexible circuit board includes a plurality of metal wiring layers, each of which is arranged at intervals, and the metal wiring layers at the connection branches are electrically connected to the corresponding docking terminals.

[0012] In a possible implementation, the metal wiring layers are arranged at intervals along the thickness direction of the flexible circuit board.

[0013] In a possible implementation, each metal wiring layer includes a plurality of metal wirings, and at least a portion of the metal wirings on at least two metal wiring layers are arranged crosswise.

[0014] In the embodiment of the present application, the metal traces are crossed inside the flexible circuit board. When the main body of the flexible circuit board is electrically connected to the printed circuit board, each metal trace can transmit the corresponding signal, and the cross arrangement of the metal traces will not increase the thickness of the flexible circuit board, so the cross arrangement of the metal traces will not increase the windward area of ​​the flexible circuit board, and effectively reduce the blocking effect of the flexible circuit board on the airflow.

[0015] In a possible implementation, each metal wiring layer includes a plurality of metal wirings, and the docking terminal includes a plurality of conductive pins, and the metal wirings are electrically connected to corresponding conductive pins.

[0016] In a possible implementation, the main body includes a transition portion and a plurality of welding portions. The transition portion is provided with the welding portion. Each metal wiring layer includes metal wiring. The welding portion is electrically connected to the corresponding metal wiring.

[0017] In the electrical connection device of the embodiment of the present application, the main body of the flexible circuit board is welded to the printed circuit board through the welding part. On the one hand, it is conducive to arranging the main body of the flexible circuit board close to the printed circuit board; on the other hand, there is no need to use an electrical connector to achieve electrical connection between the main body and the printed circuit board, avoiding the problem of blocking the airflow due to the arranged electrical connector occupying the air duct space.

[0018] In a possible implementation manner, the welding portions are distributed in an array.

[0019] In a possible implementation, the welding portion has a central through hole.

[0020] In a possible implementation manner, the welding portion includes a welding pad and a welding body, and the welding body is connected to the welding pad.

[0021] Since the soldering portion itself includes a soldering body, the soldering process efficiency of the soldering portion and the corresponding soldering structure on the printed circuit board is relatively high.

[0022] In a possible implementation, the main body includes a plurality of transition parts, and the plurality of transition parts are arranged at intervals.

[0023] In a possible implementation manner, the shapes and sizes of the adapter portions are the same.

[0024] In a possible implementation, the flexible circuit board includes a plurality of connection branch groups, the electrical connection device includes a plurality of electrical connectors, and the connection branch groups and the electrical connectors are arranged in a one-to-one correspondence.

[0025] In a possible implementation manner, connection branch groups are respectively arranged on both sides of the main body. The connection branch groups on both sides of the main body are respectively correspondingly arranged with electrical connectors.

[0026] The electrical connector of the electrical connection device can be connected to the electrical connector on the printed circuit board by plugging, which can make the connection process between the electrical connection device and the printed circuit board flexible and convenient, which is conducive to reducing the difficulty of connection between the electrical connection device and the printed circuit board, and at the same time is conducive to reducing the number of welding times, effectively avoiding the problem of damage to components on the printed circuit board due to too many welding times.

[0027] Alternatively, the electrical connector of the electrical connection device can be welded to the pad on the printed circuit board to achieve electrical connection, which is beneficial to reduce the number of electrical connectors set on the printed circuit board and to avoid the problem of blocking the airflow due to the electrical connectors set on the printed circuit board occupying the air duct space.

[0028] In a possible implementation manner, the number of connection branch groups on both sides of the main body is the same.

[0029] In a possible implementation, the flexible circuit board is an integrally formed structure, which helps to ensure that the thickness of the main body is relatively small. At the same time, the flexible circuit board has good overall flexibility, making it less likely for the flexible circuit board to break or delaminate when it is bent and deformed.

[0030] In a possible implementation, the flexible circuit board includes a plurality of sub-circuit boards, each of which has a stacking portion, and each of the stacking portions of the plurality of sub-circuit boards is stacked to form a main body.

[0031] The method of stacking multiple sub-circuit boards to form a flexible circuit board is conducive to reducing the difficulty of processing and manufacturing the flexible circuit board and saving production costs.

[0032] A second aspect of an embodiment of the present application provides a computing device, which includes a printed circuit board and an electrical connection device.

[0033] The electrical connection device includes a flexible circuit board and an electrical connector. The flexible circuit board includes a main body and a connection branch group. The connection branch group includes a plurality of bendable connection branches. The plurality of connection branches are all connected to the main body. The electrical connector includes a socket and a plurality of docking terminals. The docking terminals are arranged on the socket. The connection branch group is arranged correspondingly to the electrical connector. The plurality of connection branches are electrically connected to the plurality of docking terminals respectively. The electrical connector is arranged on a printed circuit board. The main body is electrically connected to the printed circuit board.

[0034] In a possible implementation manner, the connecting branch is bent relative to the main body.

[0035] In a possible implementation manner, the thickness direction of at least part of the connecting branches is different from the thickness direction of the printed circuit board, and the thickness direction of the main body is the same as the thickness direction of the printed circuit board.

[0036] The main body of the flexible circuit board is arranged relatively close to the printed circuit board, which reduces the airflow blocking effect and is conducive to the airflow. The main body of the flexible circuit board is in a flat state relative to the printed circuit board. The connecting branch is bent and deformed relative to the main body. When the electrical connection device is connected to the printed circuit board, the connecting branch has a regular shape, which is conducive to guiding the airflow and reducing the airflow blocking effect.

[0037] In a possible implementation, the computing device further includes a chip, which is disposed on a printed circuit board, and the flexible circuit board is communicatively connected to the chip.

[0038] In a possible implementation, the main body includes a plurality of transfer parts, the plurality of transfer parts are arranged at intervals, and a chip is arranged on a region between two transfer parts on the printed circuit board.

[0039] In a possible implementation, the electrical connector is disposed at an edge of the printed circuit board. There may be a distance between the transition portion of the main body and the edge of the printed circuit board.

[0040] In a possible implementation, a plurality of electrical connectors connected to the printed circuit board are arranged at intervals, and a chip is arranged on the printed circuit board in an area between two electrical connectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a computing node provided in an embodiment of the present application;

[0042] Figure 2 A schematic diagram of a partial structure of a computing device provided in one embodiment of the present application;

[0043] Figure 3 A schematic diagram of the structure of an electrical connection device provided in one embodiment of the present application;

[0044] Figure 4 A schematic diagram of the structure of an electrical connection device provided in one embodiment of the present application;

[0045] Figure 5 A schematic diagram of the structure of a flexible circuit board provided in one embodiment of the present application;

[0046] Figure 6 A schematic diagram of a partial cross-sectional structure of a flexible circuit board provided in one embodiment of the present application;

[0047] Figure 7 A schematic diagram of a partial structure of a flexible circuit board provided in one embodiment of the present application;

[0048] Figure 8 A schematic diagram of a partial cross-sectional structure of a flexible circuit board provided in one embodiment of the present application;

[0049] Fig. 9 A schematic diagram of a partial cross-sectional structure of a flexible circuit board provided in one embodiment of the present application;

[0050] Fig.10 A schematic diagram of a partial cross-sectional structure of a flexible circuit board provided in one embodiment of the present application;

[0051] Fig.11 A schematic diagram of a partial structure of a flexible circuit board provided in one embodiment of the present application;

[0052] Fig.12 A schematic diagram of a partial structure of a computing device provided in one embodiment of the present application;

[0053] Fig.13 A schematic diagram of a partial structure of a flexible circuit board provided in one embodiment of the present application;

[0054] Fig.14 A schematic diagram of a partial structure of an electrical connection device provided in one embodiment of the present application;

[0055] Fig.15 A schematic diagram of a partial structure of a computing device provided in one embodiment of the present application;

[0056] Fig.16 A schematic diagram of a processing process of a flexible circuit board provided in an embodiment of the present application;

[0057] Fig.17 A schematic diagram of the structure of an electrical connection device provided in one embodiment of the present application;

[0058] Fig.18 A schematic diagram of the processing of a flexible circuit board provided in one embodiment of the present application.

[0059] Reference numerals:

[0060] 10. Electrical connection device;

[0061] 20. flexible circuit board; 201. connecting branch group;

[0062] 21, main body; 21a, via hole; 211, transfer part; 212, welding part; 212a, central through hole; 2121, welding pad; 2122, welding body;

[0063] 22. Connect branches; 221. Narrow the transition section;

[0064] 23. Metal routing layer; 231. Metal routing; 232. Welding metal sheet;

[0065] 30. Electrical connector;

[0066] 31. Socket;

[0067] 32. docking terminal; 321. conductive pin;

[0068] 100. Computing nodes;

[0069] 110, box body;

[0070] 120. Printed circuit board;

[0071] 130. Chip;

[0072] 200, sub-circuit board; 210, lamination part;

[0073] 300. Adhesive glue. DETAILED DESCRIPTION

[0074] The embodiment of the present application provides a computing device, which may be a rack server, a blade server, a tower server, a whole cabinet server, or other devices with computing functions, and the embodiment of the present application does not specifically limit the form of the computing device.

[0075] The embodiment of the present application is described by taking the computing device as a whole cabinet server as an example. The whole cabinet server may include a cabinet and a computing node installed in the cabinet. The number of computing nodes may be one or more. A mounting position for mounting a fixed computing node may be provided in the cabinet. Exemplarily, the number of mounting positions may be the same as the number of computing nodes.

[0076] Figure 1 The structure of the computing node 100 is schematically shown. Figure 1 As shown, an embodiment of the present application provides a computing node 100. For example, the computing node 100 can be a general computing node or a dedicated computing node, and the embodiment of the present application does not limit the specific type of the computing node 100. The computing node 100 may include a housing 110, a fan module and a power supply device. Among them, the housing 110 includes a storage space. The fan module and the power supply device can be arranged in the storage space of the housing 110. The housing 110 may include a connected shell and a top cover. The shell and the top cover are detachably connected. Specifically, the shell includes a bottom wall and a side wall.

[0077] Figure 2 The local structure of the computing device is schematically shown. The computing device may also include a printed circuit board (PCB) 120. For example, the printed circuit board 120 may include but is not limited to a main board, an adapter board, and a sub-board. A variety of components are arranged on the printed circuit board 120. The components on the printed circuit board 120 may include but are not limited to a chip 130 or a memory. The chip 130 may include but is not limited to a central processing unit (CPU), a graphics processing unit (GPU), or a power management chip.

[0078] In some achievable ways, Figure 2 The partial structure shown can be applied to the computing node 100. The printed circuit board 120 can be disposed in the housing of the box 110. The power supply device can be used to supply power to the components on the printed circuit board 120 and the fan module.

[0079] The computing node 100 is provided with an air duct corresponding to the fan module. The air duct refers to a space where air can flow. When the fan module in the computing node 100 is in operation, the fan module can generate airflow through the air duct, which can take away the heat generated by the printed circuit board 120 or components to achieve heat dissipation. For example, Figure 2 The direction of the dotted arrow V or the direction opposite to the direction of the dotted arrow V may be the flow direction of the airflow.

[0080] In the related art, a computing device may include a connecting cable module. The connecting cable module includes a cable and an electrical connector. The electrical connector may be used as an external interface. The end of the cable is connected to the electrical connector. The connecting cable module may be used to realize signal transmission between different printed circuit boards to realize signal transmission between different printed circuit boards. The space inside the computing device is relatively limited. When the signal transmission rate is required to be high, the heat generated by the components is relatively large. For example, in the case of high-speed transmission with a transmission rate of 112 Gbps or higher, the heat generated by the components is relatively large. Therefore, when the connecting cable module is used to realize signal transmission, the routing path of the cable will occupy the space of the air duct, so that the cable will block the airflow in the air duct. The electrical connector of the connecting cable module usually leads to a large number of cables. There is a situation where the cables are crossed, so that the airflow in the air duct is blocked significantly, affecting the heat dissipation. In addition, when the signal transmission bandwidth and the transmission rate increase, it is necessary to use a thicker cable to meet the signal integrity (SI) requirements during the signal transmission process. The thicker the cable, the harder it is to bend, requiring a larger turning radius and more space for routing the cable, further increasing the airflow blocking effect.

[0081] See also Figure 2 As shown, the electrical connection device 10 according to the embodiment of the present application can be used to electrically connect to the printed circuit board 120 to implement corresponding signal transmission using the electrical connection device 10 .

[0082] Figure 3 The structure of the electrical connection device 10 is schematically shown. Figure 2 and Figure 3 As shown, the electrical connection device 10 of the embodiment of the present application may include a flexible circuit board 20 and an electrical connector 30 .

[0083] The flexible circuit board 20 has a relatively small thickness as a whole. The flexible circuit board 20 has the property of being bendable under stress as a whole. The flexible circuit board 20 includes a main body 21 and a connecting branch group 201. The connecting branch group 201 includes a plurality of bendable connecting branches 22. The plurality of connecting branches 22 are all connected to the main body 21. The connecting branch group 201 is led out from the main body 21. The main body 21 itself has a relatively small thickness. The thickness of the connecting branch 22 can be less than the thickness of the main body 21. The connecting branch 22 is relatively easy to bend and deform when subjected to stress. The connecting branch 22 can be bent relative to the main body 21.

[0084] In some examples, the thickness of the body 21 of the flexible circuit board 20 may be the maximum thickness of the flexible circuit board 20. Exemplarily, the thickness of the body 21 of the flexible circuit board 20 may range from about 0.3 millimeters (mm) to about 2 mm. Exemplarily, the thickness of the connecting branch 22 may range from about 0.1 mm to about 0.5 mm.

[0085] Before the flexible circuit board 20 is assembled with the electrical connector 30, the connecting branch 22 may be in a free state. When a bending moment is applied to the connecting branch 22, the connecting branch 22 may be bent and deformed. For example, a plurality of connecting branches 22 may be arranged at intervals along the thickness direction of the main body 21.

[0086] The electrical connector 30 includes a socket 31 and a plurality of docking terminals 32. The docking terminals 32 are disposed on the socket 31. The connection branch group 201 can be disposed corresponding to the electrical connector 30. The plurality of connection branches 22 are electrically connected to the plurality of docking terminals 32 respectively. In some achievable ways, the connection branches 22 are welded to the corresponding docking terminals 32. The electrical connector 30 of the embodiment of the present application can be used to be plugged with other matching electrical connectors to achieve electrical connection between the two.

[0087] The electrical connection device 10 of the embodiment of the present application can be assembled with the corresponding printed circuit board 120 to form a circuit board assembly. The electrical connector 30 can be connected and fixed to the printed circuit board 120. For example, the electrical connector 30 can be crimped to the printed circuit board 120. The socket 31 of the electrical connector 30 can also be connected to the printed circuit board 120 using fasteners such as screws. The socket 31 can be an insulating structural member. The material of the socket 31 can be, but is not limited to, plastic. The flexible circuit board 20 is electrically connected to the printed circuit board 120. The space occupied by the flexible circuit board 20 itself is relatively small, which is conducive to reducing the occupancy rate of the air duct space and ensuring good airflow flow in the air duct, so that the computing device can achieve good heat dissipation.

[0088] The electrical connection device 10 of the embodiment of the present application is used to realize signal transmission. The electrical connection device 10 includes a flexible circuit board 20 for transmitting signals and an electrical connector 30. When the electrical connection device 10 is applied to a computing device, the main body 21 of the flexible circuit board 20 can be electrically connected to the printed circuit board 120. The electrical connector 30 can be connected and fixed to the printed circuit board 120. The electrical connector 30 is used to plug with other matching electrical connectors. The space occupied by the flexible circuit board 20 itself is relatively small, and it is easy to bend and deform under force, so that the flexible circuit board 20 can be bent and routed to effectively avoid the air duct space. The main body 21 of the flexible circuit board 20 itself has a relatively small thickness. The main body 21 of the flexible circuit board 20 can be arranged close to the printed circuit board 120, so that there is a relatively small spacing between the main body 21 of the flexible circuit board 20 and the printed circuit board 120, which is conducive to the flexible circuit board 20 avoiding the air duct space and reducing the windward area of ​​the flexible circuit board 20. Therefore, while meeting the signal transmission requirements, the flexible circuit board 20 of the embodiment of the present application can effectively reduce the occupancy rate of the air duct space, reduce the blocking effect on the airflow, ensure good airflow fluidity in the air duct, and ensure good heat dissipation of the computing device.

[0089] In addition, in the related art, a cable module is used for connection, and the cable of the cable module is in direct contact with the printed circuit board 120, and the cable is displaced, causing the cable to scratch the printed circuit board 120 or the components on the printed circuit board 120. When the electrical connection device 10 of the embodiment of the present application is applied to a computing device, the flexible circuit board 20 is not easily displaced, so that the flexible circuit board 20 is not easy to scratch the printed circuit board 120 or the components on the printed circuit board 120.

[0090] Furthermore, in the related art, the cable processing and manufacturing cost of the connecting cable module is relatively high. Under the condition of meeting the signal transmission requirements, the processing and manufacturing cost of the flexible circuit board 20 of the embodiment of the present application is relatively low, which is conducive to reducing the production cost and use cost of the electrical connector 30.

[0091] In some achievable ways, Figure 4 The structure of the electrical connection device 10 is schematically shown. Figure 5 The structure of the flexible circuit board 20 is schematically shown. Figure 4 and Figure 5 As shown, the connecting branch 22 includes a narrowing transition section 221. The narrowing transition section 221 is connected to the main body 21. In the direction perpendicular to the thickness direction of the connecting branch 22, the size of the narrowing transition section 221 is relatively small, which is conducive to reducing the windward area of ​​the flexible circuit board 20. Exemplarily, the direction perpendicular to the thickness direction of the connecting branch 22 can be the width direction of the flexible circuit board 20. Exemplarily, the size of the narrowing transition section 221 close to one end of the main body 21 can be smaller than the size of the narrowing transition section 221 away from one end of the main body 21. When the flexible circuit board 20 is connected to the electrical connector 30, the narrowing transition section 221 can be located outside the electrical connector 30. When the connecting branch 22 is subjected to a bending moment, the narrowing transition section 221 is relatively easy to bend and deform, which is conducive to reducing the difficulty of bending and deformation of the connecting branch 22, and is also conducive to reducing the rebound stress of the connecting branch 22 in the bending deformation state.

[0092] When the electrical connection device 10 of the embodiment of the present application is connected to the printed circuit board 120, the electrical connector 30 is arranged on the printed circuit board 120. The connection branch 22 can be bent and deformed. The thickness direction of at least part of the connection branch 22 can be different from the thickness direction of the printed circuit board 120. Exemplarily, the thickness direction of at least part of the connection branch 22 can be perpendicular to or intersect with the thickness direction of the printed circuit board 120. At least part of the connection branch 22 is in an erected state relative to the printed circuit board 120. The thickness direction of the main body 21 of the flexible circuit board 20 can be the same as the thickness direction of the printed circuit board 120. The main body 21 of the flexible circuit board 20 is arranged relatively close to the printed circuit board 120, which reduces the airflow blocking effect and is conducive to the airflow. The main body 21 of the flexible circuit board 20 is in a flat state relative to the printed circuit board 120. The connection branch 22 is bent and deformed relative to the main body 21. When the electrical connection device 10 is connected to the printed circuit board 120, the connection branch 22 has a regular shape, which is conducive to guiding the airflow and reducing the airflow blocking effect.

[0093] In some examples, the connecting branch 22 includes a narrowing transition section 221. The narrowing transition section 221 of the connecting branch 22 can be bent and deformed relative to the main body 21. The narrowing transition section 221 of the connecting branch 22 has a relatively small self-rebound stress, so that when the narrowing transition section 221 is bent and deformed, the narrowing transition section 221 is not easy to pull the main body 21, so that the main body 21 is not easy to warp and deform, reducing the blocking effect of the main body 21 on the airflow. The embodiment of the present application does not specifically limit the specific shape of the narrowing transition section 221.

[0094] Figure 6 The partial cross-sectional structure of the flexible circuit board 20 is schematically shown. Figure 7 The partial structure of the flexible circuit board 20 is schematically shown. Figure 6 and Figure 7 As shown, the flexible circuit board 20 may include a plurality of metal wiring layers 23. The metal wiring layers 23 are insulated from each other. The metal wiring layers 23 are used to transmit corresponding signals. The metal wiring layers 23 are arranged at intervals. For example, the metal wiring layers 23 are arranged at intervals along the thickness direction of the flexible circuit board 20. The metal wiring layer 23 at the connection branch 22 is electrically connected to the corresponding docking terminal 32.

[0095] Each metal wiring layer 23 may include a plurality of metal wirings 231. The metal wirings 231 are used to transmit corresponding signals. A docking terminal 32 may include a plurality of conductive pins 321. The metal wirings 231 in each metal wiring layer 23 may be electrically connected to corresponding conductive pins 321.

[0096] The number of metal wiring layers 23 may be the same as the number of docking terminals 32. One metal wiring layer 23 is provided for each connection branch 22. The number of conductive pins 321 on one docking terminal 32 may be equal to or greater than the number of metal wirings 231 in each metal wiring layer 23.

[0097] The thickness direction of the connection branch 22 may be perpendicular to the extension direction of the metal trace 231 . The width direction of the flexible circuit board 20 may be perpendicular to the extension direction of the metal trace 231 .

[0098] For some examples, see Figure 6 and Figure 7 As shown, each metal wiring layer 23 may include a plurality of metal wirings 231. At least a portion of the metal wirings 231 in at least two metal wiring layers 23 are cross-arranged.

[0099] For example, see Figure 7 As shown, the flexible circuit board 20 may include three connection branches 22. The flexible circuit board 20 may include three metal wiring layers 23. Each metal wiring layer 23 may include three metal wirings 231. For different metal wiring layers 23, some of the metal wirings 231 may be cross-arranged.

[0100] Figure 8 The partial cross-sectional structure of the flexible circuit board 20 is schematically shown. Figure 7 and Figure 8 As shown, the main body 21 of the flexible circuit board 20 may include a transition portion 211 and a plurality of welding portions 212. The transition portion 211 is provided with the welding portion 212. The welding portion 212 is electrically connected to the corresponding metal trace 231. When the main body 21 of the flexible circuit board 20 is electrically connected to the printed circuit board 120, the transition portion 211 may be welded to the corresponding welding structure on the printed circuit board 120 through the welding portion 212. For example, the welding structure on the printed circuit board 120 may include a pad.

[0101] In the electrical connection device 10 of the embodiment of the present application, the main body 21 of the flexible circuit board 20 is welded to the printed circuit board 120 through the welding portion 212. On the one hand, it is beneficial for the main body 21 of the flexible circuit board 20 to be arranged close to the printed circuit board 120; on the other hand, there is no need to use an electrical connector to achieve electrical connection between the main body 21 and the printed circuit board 120, thereby avoiding the problem of blocking the airflow due to the arranged electrical connector occupying the air duct space; on the other hand, the transmission loss of the flexible circuit board 20 itself is relatively low, which is beneficial to improving the signal integrity (SI) during the signal transmission process.

[0102] In some examples, each metal wiring layer 23 includes a plurality of metal wirings 231. Each metal wiring 231 is connected to a soldering portion 212. Exemplarily, the soldering portions 212 may be distributed in an array.

[0103] For some examples, see Figure 8 As shown, the main body 21 is provided with a via 21a. A conductive material is provided in the via 21a to form a soldering portion 212. The material of the soldering portion 212 may include, but is not limited to, copper or a copper alloy. During the soldering process between the soldering portion 212 and the corresponding soldering structure on the printed circuit board 120, solder paste is coated on the soldering portion 212 or the corresponding soldering structure on the printed circuit board 120, and then a reflow soldering process is used to melt the solder paste and solidify it to achieve soldering.

[0104] For example, Fig. 9 The partial cross-sectional structure of the flexible circuit board 20 is schematically shown. Fig. 9 As shown, the soldering portion 212 has a central through hole 212a. During soldering, the molten solder can flow along the central through hole 212a and can overflow from the central through hole 212a, so that the soldering area of ​​the solidified solder is relatively large, which is beneficial to improving the mechanical connection strength of the soldering portion 212 and the printed circuit board 120.

[0105] In some examples, a laser welding process is used to weld the welding portion 212 and the printed circuit board 120. During the welding process, solder paste is coated on the corresponding welding structure on the printed circuit board 120, and then a laser is used to irradiate the solder paste through the central through hole 212a to melt the solder paste. The molten solder can flow along the central through hole 212a and can overflow from the central through hole 212a. The welding portion 212 and the printed circuit board 120 are connected by the solidified solder.

[0106] In some examples, Fig.10 The partial cross-sectional structure of the flexible circuit board 20 is schematically shown. Fig.10 As shown, the welding part 212 includes a pad 2121 and a welding body 2122. A via 21a is provided on the main body 21. A conductive material is filled in the via 21a to form the pad 2121. The welding body 2122 is connected to the pad 2121. The welding body 2122 can be welded to the corresponding welding structure on the printed circuit board 120. Exemplarily, the welding body 2122 can be a solder ball. The material of the welding body 2122 can include tin.

[0107] During the welding process between the welding portion 212 and the corresponding welding structure on the printed circuit board 120, solder paste is coated on the welding body 2122 or the corresponding welding structure on the printed circuit board 120, and then a reflow process is used to melt and solidify the welding body 2122 to achieve welding with the corresponding welding structure on the printed circuit board 120. Since the welding portion 212 itself includes the welding body 2122, the welding process efficiency of the welding portion 212 and the corresponding welding structure on the printed circuit board 120 is relatively high.

[0108] In some examples, Fig.11 A partial structure of the flexible printed circuit board 20 is schematically shown. Fig.12 Schematic diagram showing the partial structure of a computing device. Fig.11 and Fig.12 As shown, the main body 21 of the flexible circuit board 20 includes a plurality of transition parts 211. The plurality of transition parts 211 are arranged at intervals. The main body 21 of the flexible circuit board 20 can be connected to the printed circuit board 120 through the plurality of transition parts 211. Components can be arranged on the area between the two transition parts 211 on the printed circuit board 120, for example, a chip 130 can be arranged. The transition part 211 is located on one side of the chip 130 to avoid the chip 130. Exemplarily, the electrical connector 30 of the electrical connection device 10 can be arranged at the edge of the printed circuit board 120, and there can be a gap between the transition part 211 of the main body 21 and the edge of the printed circuit board 120. The electrical connector 30 can serve as an external interface. The flexible circuit board 20 can be connected to the corresponding chip 130 for communication. Signal transmission between the chip 130 and the electrical connector 30 can be realized through the flexible circuit board 20. Exemplarily, each transition part 211 can be provided with a corresponding welding part 212.

[0109] Exemplarily, the shapes and sizes of the adapter portions 211 may be the same. The shape of the adapter portion 211 may be, but is not limited to, a rectangle.

[0110] In some examples, the flexible circuit board 20 includes a plurality of connection branch groups 201. The plurality of connection branch groups 201 are arranged at intervals. The electrical connection device 10 includes a plurality of electrical connectors 30. The connection branch groups 201 are arranged one-to-one with the electrical connectors 30, that is, one connection branch group 201 can correspond to one electrical connector 30.

[0111] The connecting branch groups 201 are arranged opposite to the transition parts 211. The number of the connecting branch groups 201 may be less than, equal to, or greater than the number of the transition parts 211, which is not specifically limited in the present embodiment. For example, the flexible circuit board 20 may include three connecting branch groups 201 and two transition parts 211.

[0112] In some achievable ways, Fig.13The partial structure of the flexible circuit board 20 is schematically shown. Fig.13 As shown, each metal wiring layer 23 may include a plurality of metal wirings 231. At least a portion of the metal wirings 231 in at least two metal wiring layers 23 are cross-arranged.

[0113] In the embodiment of the present application, the metal traces 231 are cross-traveled inside the flexible circuit board 20. When the main body 21 of the flexible circuit board 20 is electrically connected to the printed circuit board 120, each metal trace 231 can transmit a corresponding signal, and the cross-setting of the metal traces 231 will not increase the thickness of the flexible circuit board 20, so the cross-setting of the metal traces 231 will not increase the windward area of ​​the flexible circuit board 20, and effectively reduce the blocking effect of the flexible circuit board 20 on the airflow.

[0114] For some examples, see Fig.13 As shown, three metal wirings 231 in three different metal wiring layers 23 may be arranged in a cross pattern.

[0115] For some examples, see Fig.13 As shown, each metal wiring layer 23 may include five metal wirings 231. Each metal wiring 231 is provided with an exposed welding metal sheet 232. The welding metal sheet 232 is provided on the connecting branch 22. The metal wiring 231 can be connected to the conductive pin of the docking terminal (see Figure 4 as shown) welding.

[0116] In some achievable ways, Fig.14 The partial structure of the electrical connection device 10 is schematically shown. Fig.15 Schematic diagram showing the partial structure of a computing device. Fig.14 and Fig.15 As shown, connection branch groups 201 are respectively provided on both sides of the main body 21. The connection branch group 201 can be provided on one side of the main body 21, and the connection branch group 201 can also be provided on the other side. The number of the connection branch groups 201 on both sides of the main body 21 can be the same or different. The connection branch groups 201 on both sides of the main body 21 are respectively provided with electrical connectors 30.

[0117] The connection branch 22 on one side of the main body 21 may serve as a first connection branch, and the connection branch 22 on the other side may serve as a second connection branch.

[0118] When the flexible circuit board 20 is electrically connected to the printed circuit board 120, the flexible circuit board 20 can be connected to the connection structure on the printed circuit board 120 through the electrical connector 30. The main body 21 and the printed circuit board 120 can be electrically connected through the connecting branch group 201 and the electrical connector 30. The main body 21 and the printed circuit board 120 remain in a non-electrically connected state. For example, welding is not required between the main body 21 and the printed circuit board 120.

[0119] Exemplarily, a plurality of electrical connectors 30 connected to the printed circuit board 120 are arranged at intervals. Components, such as a chip 130, are arranged on the area between two electrical connectors 30 on the printed circuit board 120.

[0120] Exemplarily, the connection structure on the printed circuit board 120 may be an electrical connector. The electrical connector 30 of the electrical connection device 10 may be connected to the electrical connector on the printed circuit board 120 by plugging, which may make the connection process between the electrical connection device 10 and the printed circuit board 120 flexible and convenient, and is conducive to reducing the difficulty of connection between the electrical connection device 10 and the printed circuit board 120, and is also conducive to reducing the number of welding times, effectively avoiding the problem of components on the printed circuit board 120 being damaged due to excessive welding times.

[0121] Exemplarily, the connection structure on the printed circuit board 120 may be a pad. The electrical connector 30 of the electrical connection device 10 may be welded to the pad on the printed circuit board 120 to achieve electrical connection, thereby reducing the number of electrical connectors provided on the printed circuit board 120 and avoiding the problem of blocking the airflow due to the electrical connectors provided on the printed circuit board 120 occupying the air duct space.

[0122] See also Fig.14 As shown, the flexible circuit board 20 of the embodiment of the present application can be an integrally formed structure, which is conducive to ensuring that the thickness of the main body 21 is relatively small. At the same time, the overall flexibility of the flexible circuit board 20 is good, so that the flexible circuit board 20 is not prone to breakage or delamination when it is bent and deformed.

[0123] In some examples, Fig.16 The process of manufacturing the flexible circuit board 20 is schematically shown. Fig.16 As shown, the manufacturing process of the flexible circuit board 20 may include:

[0124] Providing a plurality of flexible sub-circuit boards 200;

[0125] stacking a plurality of sub-circuit boards 200 in sequence;

[0126] The predetermined area of ​​the sub-circuit board 200 is laminated by a lamination process to form a flexible circuit board 20 with an integral structure, wherein the laminated area forms a main body 21 and other unlaminated areas form connecting branches 22 .

[0127] Fig.17 The structure of the electrical connection device 10 is schematically shown. Fig.17 As shown, the flexible circuit board 20 of the embodiment of the present application may include a plurality of sub-circuit boards 200. The sub-circuit board 200 itself is flexible and is easy to bend and deform under force. The sub-circuit board 200 has a stacking portion 210. The stacking portions 210 of the plurality of sub-circuit boards 200 are stacked to form a main body 21. The method of stacking the plurality of sub-circuit boards 200 to form the flexible circuit board 20 is conducive to reducing the difficulty of processing and manufacturing the flexible circuit board 20 and saving production costs.

[0128] In some examples, Fig.18 The process of manufacturing the flexible circuit board 20 is schematically shown. Fig.18 As shown, the manufacturing process of the flexible circuit board 20 may include:

[0129] Providing a plurality of flexible sub-circuit boards 200;

[0130] Applying adhesive 300 to the laminated portion 210 of one sub-circuit board 200 and bonding another sub-circuit board 200 to the adhesive 300;

[0131] This process is repeated until the sub-circuit boards 200 are bonded together to form a flexible circuit board 20 , wherein the stacked portions 210 form a main body 21 , and the other portions of the sub-circuit boards 200 form connecting branches 22 .

[0132] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0133] The embodiments of the present application do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0134] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, systems, products or devices.

[0135] The term "plurality" in this article refers to two or more than two. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship; in a formula, the character " / " indicates that the previous and next associated objects are in a "division" relationship.

[0136] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0137] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. An electrical connection device, characterized in that: include: A flexible circuit board comprises a main body and a connecting branch group, wherein the connecting branch group comprises a plurality of bendable connecting branches, and the plurality of connecting branches are all connected to the main body; The electrical connector comprises a socket and a plurality of docking terminals, wherein the docking terminals are arranged on the socket, the connection branch group is arranged corresponding to the electrical connector, and the plurality of connection branches are electrically connected to the plurality of docking terminals respectively.

2. The electrical connection device according to claim 1, characterized in that: The connecting branch comprises a narrowing transition section connected to the main body.

3. The electrical connection device according to claim 1, characterized in that: The flexible circuit board includes a plurality of metal wiring layers, each of which is arranged at intervals, and the metal wiring layers at the connection branches are electrically connected to the corresponding docking terminals.

4. The electrical connection device according to claim 3, characterized in that: Each of the metal routing layers includes a plurality of metal routings, and at least a portion of the metal routings on at least two of the metal routing layers are cross-arranged.

5. The electrical connection device according to claim 3, characterized in that: The main body includes a transition portion and a plurality of welding portions, the transition portion is provided with the welding portion, each of the metal wiring layers includes metal wiring, and the welding portion is electrically connected to the corresponding metal wiring.

6. The electrical connection device according to claim 5, characterized in that: The main body includes a plurality of the transition parts, and the plurality of the transition parts are arranged at intervals.

7. The electrical connection device according to any one of claims 1 to 6, characterized in that: The flexible circuit board includes a plurality of the connection branch groups, the electrical connection device includes a plurality of the electrical connectors, and the connection branch groups and the electrical connectors are arranged in a one-to-one correspondence.

8. The electrical connection device according to any one of claims 1 to 4, characterized in that: The connection branch groups are respectively arranged on both sides of the main body, and the connection branch groups on both sides of the main body are respectively correspondingly arranged with the electrical connectors.

9. A computing device, characterized in that include: Printed circuit boards; According to the electrical connection device according to any one of claims 1 to 8, the electrical connector is arranged on the printed circuit board, and the main body is electrically connected to the printed circuit board.

10. The computing device according to claim 9, characterized in that The thickness direction of at least part of the connecting branches is different from the thickness direction of the printed circuit board, and the thickness direction of the main body is the same as the thickness direction of the printed circuit board.

Images