Connector assembly and large-current BTB connector thereof

Abstract

The utility model discloses a connector assembly and a large-current BTB connector thereof, and relates to the technical field of connectors, and the large-current BTB connector comprises a printed circuit board; the connector shell is provided with at least one containing cavity, the first end of the connector shell is detachably connected with the printed circuit board, and the second end of the connector shell is provided with a first inserting groove used for being inserted into an opponent piece; the first ends of the terminals are vertically connected with the printed circuit board in an inserted mode, the second ends of the terminals are provided with second insertion grooves used for being inserted into opponent pieces, the second insertion grooves and the first insertion grooves are distributed in an aligned mode, and the at least two terminals are stacked in the same containing cavity. According to the device, the low-size space of the board-to-board connector is ensured, and meanwhile, the requirement for stable large-current transmission is met.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and more specifically, to a high-current BTB connector and a connector assembly comprising the high-current BTB connector. Background Art

[0002] In the existing technology, BTB (Board-to-board Connectors) is the connector product with the strongest signal transmission capability among all connector product types. It is mainly used in power systems, communication networks, home appliances, military manufacturing and other industries. With the development of new energy vehicles, board-to-board connectors have gradually separated from traditional low-voltage signal connectors. Compared with traditional low-voltage vehicle connectors, the operating conditions of new energy vehicle connectors are more complex and changeable, and the requirements for the electrical contact reliability and current carrying capacity of board-to-board connectors are higher; traditional board-to-board connectors have a small structural size and are often used for signal interconnection, but they cannot carry the high current requirements of new energy.

[0003] In summary, how to ensure a low-size space for a board-to-board connector while providing the requirement for stable high-current transmission is a problem that currently needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a high-current BTB connector that meets the requirements of stable high-current transmission while ensuring a low-size space of a board-to-board connector.

[0005] Another object of the present invention is to provide a connector assembly including the above-mentioned high-current BTB connector.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high current BTB connector, comprising:

[0008] Printed circuit boards;

[0009] A connector housing, which is provided with at least one accommodating cavity, wherein a first end of the connector housing is detachably connected to the printed circuit board, and a second end of the connector housing is provided with a first slot for plugging with a counterpart;

[0010] The first end of the terminal is vertically plugged into the printed circuit board, and the second end of the terminal is provided with a second slot for plugging into the counterpart, the second slot is aligned with the first slot, and at least two terminals are stacked in the same accommodating cavity.

[0011] In one embodiment, a first protrusion is provided on the front side of the terminal, and a groove is provided on the back side of the terminal, and the first protrusion and the groove are snap-fitted.

[0012] In one embodiment, the first protrusion and the groove are both long strip structures.

[0013] In one embodiment, the first end of the terminal is provided with a second protrusion, and the printed circuit board is provided with waist-shaped holes for clamping a plurality of the second protrusions.

[0014] In one embodiment, the second protrusion and the printed circuit board are welded integral structural parts.

[0015] In one embodiment, third protrusions are provided on both sides of the terminal, and a slot for clamping the third protrusions is provided in the connector housing.

[0016] In one embodiment, the third protrusion is a wave-like structure.

[0017] In one embodiment, the connector housing is provided with two accommodating cavities, two positioning posts are provided at the end of the connector housing, the positioning posts are located between the two accommodating cavities, and the printed circuit board is provided with positioning holes for respectively engaging with the two positioning posts.

[0018] In one embodiment, the diameters of the two positioning posts are different, and the two positioning posts are staggered.

[0019] A connector assembly comprises any one of the high-current BTB connectors described above.

[0020] When using the high-current BTB connector provided by the utility model, first, at least two terminals can be stacked in the same accommodating cavity. Then, the connector housing and the printed circuit board are connected, and at the same time, the first end of the terminal can be vertically plugged into the printed circuit board. Finally, the counterpart can be inserted into the second slot and the first slot to complete the plug-in assembly operation of the high-current BTB connector and the counterpart.

[0021] The device has a compact structure and can meet the space size restrictions of BTB connectors for modules such as on-board chargers and power distribution units of new energy vehicles. Moreover, the device accommodates at least two stacked terminals through the accommodating cavity of the connector housing. Compared with the common structure with only one terminal, the stacked terminals of the device can achieve a stable output of large current (20A~200A). In addition, it is only necessary to set a structure for vertical plugging with the printed circuit board at one end of the terminal and a structure for plugging with the counterpart at the other end of the terminal. There is no need to use bent terminals and other connecting components, which makes the device simple in structure, compact in space, and easy to manufacture.

[0022] In summary, the high-current BTB connector provided by the present invention meets the requirement of stable high-current transmission while ensuring the low-size space of the board-to-board connector.

[0023] In addition, the utility model also provides a connector assembly including the above-mentioned high-current BTB connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the high-current BTB connector provided by the utility model;

[0026] Figure 2 It is the assembly diagram of the high current BTB connector and the counterpart;

[0027] Figure 3 This is an exploded view of a high current BTB connector;

[0028] Figure 4 It is a front view of multiple stacked terminals;

[0029] Figure 5 It is a back view of multiple stacked terminals;

[0030] Figure 6 It is a structural schematic diagram of a single terminal;

[0031] Figure 7 A side view of a high-current BTB connector.

[0032] Reference numerals:

[0033] 1-terminal; 11-second slot; 12-clamping head; 13-first protrusion; 14-groove; 15-second protrusion; 16-third protrusion; 2-connector housing; 21-first slot; 3-opposite piece; 4-printed circuit board; 41-waist hole; 42-positioning hole; 5-positioning column. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] The core of the utility model is to provide a high-current BTB connector, which can meet the requirements of stable high-current transmission while ensuring the low-size space of the board-to-board connector. Another core of the utility model is to provide a device including the above.

[0036] Please refer to Figures 1 to 7 ,in, Figure 1 This is a schematic diagram of the structure of the high-current BTB connector provided by the utility model; Figure 2 It is the assembly diagram of the high current BTB connector and the counterpart; Figure 3 This is an exploded view of a high current BTB connector; Figure 4 It is a front view of multiple stacked terminals; Figure 5 It is a back view of multiple stacked terminals; Figure 6 It is a structural schematic diagram of a single terminal; Figure 7 A side view of a high-current BTB connector.

[0037] This specific embodiment provides a high current BTB connector, including:

[0038] Printed circuit board 4;

[0039] A connector housing 2 is provided with at least one accommodating cavity, a first end of the connector housing 2 is detachably connected to a printed circuit board 4, and a second end of the connector housing 2 is provided with a first slot 21 for plugging with a counterpart 3;

[0040] The first end of the terminal 1 is vertically plugged into the printed circuit board 4, and the second end of the terminal 1 is provided with a second slot 11 for plugging into the counterpart 3. The second slot 11 is aligned with the first slot 21, and at least two terminals 1 are stacked in the same accommodating cavity.

[0041] It should be noted that the counterpart 3 is another component used in conjunction with a certain component in the connector, and the two components together complete a specific function, such as sealing, connecting or fixing, etc. For example, a plug and a socket are the main components of a connector, the plug is usually the female part, and the socket is the male part, and the plug and the socket can achieve electrical and physical connection when plugged in.

[0042] It should also be noted that the second end and the first end of the connector housing 2 can be connected to facilitate the insertion of the terminal 1 into the accommodating cavity. The second end of the terminal 1 is provided with two clamping heads 12 that are relatively distributed, and a second slot 11 can be formed between the two clamping heads 12. The structure of the second slot 11 is as follows: Figure 4-Figure 6 As shown, the side of the clamping head 12 for contacting the counterpart 3 is an arcuate transition surface, and the counterpart 3 can be inserted into the two clamping heads 12 to connect the counterpart 3 and the terminal 1, and the arcuate transition surface will not damage the counterpart 3.

[0043] In actual use, the shape, structure, size, material, etc. of the printed circuit board 4, the connector housing 2 and the terminal 1 can be determined according to actual conditions and actual needs.

[0044] When using the high-current BTB connector provided by the utility model, first, at least two terminals 1 can be stacked in the same accommodating cavity. Then, the connector housing 2 and the printed circuit board 4 are connected, and at the same time, the first end of the terminal 1 can be vertically plugged into the printed circuit board 4. Finally, the counterpart 3 can be inserted into the second slot 11 and the first slot 21 to complete the plug-in assembly operation of the high-current BTB connector and the counterpart 3. Compact size,

[0045] The device has a compact structure and can meet the space size restrictions of the BTB connector for modules such as the on-board charger and power distribution unit of new energy vehicles. Moreover, the device accommodates at least two stacked terminals 1 through the accommodating cavity of the connector housing 2. Compared with the common structure with only one terminal, the stacked terminals 1 of the device can achieve a stable output of large current (20A~200A). In addition, it is only necessary to set a structure for vertically plugging with the printed circuit board 4 at one end of the terminal 1 and a structure for plugging with the counterpart 3 at the other end of the terminal 1, without the need to use bent terminals and other connecting components, so that the device has a simple structure, compact space, and low manufacturing difficulty.

[0046] In summary, the high-current BTB connector provided by the present invention meets the requirement of stable high-current transmission while ensuring the low-size space of the board-to-board connector.

[0047] In one embodiment, the front side of the terminal 1 is provided with a first protrusion 13, and the back side of the terminal 1 is provided with a groove 14, and the first protrusion 13 and the groove 14 are snap-fitted. The structure of the first protrusion 13 and the groove 14 is as follows: Figure 4 and Figure 5 As shown, multiple stacked terminals 1 are fitted together and fixed by snapping.

[0048] It should be noted that the terminal 1 can be made of materials such as copper, aluminum, iron or stainless steel. For example, copper has good electrical conductivity, corrosion resistance and processability, so copper terminals are widely used in the fields of electronics, electrical, communications, etc. Aluminum terminals have light weight, good electrical conductivity, and low cost, and are widely used in the fields of power transmission and distribution equipment, cable connections, low-voltage electrical appliances, motors, etc.

[0049] It should also be noted that iron terminals have high strength and hardness and low cost, but are susceptible to corrosion and oxidation and are mainly used in low-voltage electrical and power transmission and distribution equipment. In addition, stainless steel terminals have good corrosion resistance and strength and are suitable for harsh environments and high temperature and high pressure occasions, but the cost is relatively high. Therefore, in actual use, the material, shape, size, etc. of terminal 1 can be determined according to actual conditions and actual needs.

[0050] In one embodiment, the first protrusion 13 and the groove 14 are both long strip structures to increase the assembly contact area of ​​the first protrusion 13 and the groove 14, so that the clamping effect of the two terminals 1 stacked up and down is better.

[0051] In one embodiment, the first end of the terminal 1 is provided with a second protrusion 15 , and the printed circuit board 4 is provided with a waist-shaped hole 41 for clamping a plurality of second protrusions 15 .

[0052] It should be noted that the terminal 1 can be set as a sheet structure so that the size of the same accommodating cavity into which multiple terminals 1 are inserted does not need to be too large, which is conducive to making the device structure more compact. Moreover, the second protrusions 15 of multiple stacked terminals 1 can be inserted into the waist-shaped hole 41 to ensure that multiple terminals 1 are connected to the printed circuit board 4. Since the current output is positively correlated with the number of stacked terminals 1, multiple stacked terminals 1 can achieve stable output of large current (20A~200A).

[0053] In one embodiment, the second protrusion 15 and the printed circuit board 4 are welded integral structural parts to ensure the connection and assembly effect between the terminal 1 and the printed circuit board 4 .

[0054] In one embodiment, third protrusions 16 are provided on both sides of the terminal 1 , and a slot for snapping the third protrusions 16 is provided in the connector housing 2 , so that the terminal 1 can be snapped and fixed after being inserted into the accommodating cavity of the connector housing 2 .

[0055] In one embodiment, the third protrusion 16 is a wave-shaped structure to improve the clamping effect between the terminal and the connector housing 2 and prevent the terminal 1 from being easily separated from the accommodating cavity of the connector housing 2 .

[0056] In one embodiment, the connector housing 2 is provided with two accommodating cavities, and two positioning posts 5 are provided at the end of the connector housing 2. The positioning posts 5 are located between the two accommodating cavities, and the printed circuit board 4 is provided with positioning holes 42 for respectively engaging with the two positioning posts 5. By inserting the positioning posts 5 into the positioning holes 42, the connector housing 2 and the printed circuit board 4 can be assembled in place, and the position of the terminal 1 on the printed circuit board 4 can be ensured by using the connector housing 2, and the positioning posts 5 can guide the assembly of the device.

[0057] In one embodiment, the diameters of the two positioning posts 5 are different, and the two positioning posts 5 are staggered. Figure 3 As shown, the clamping effect between the connector housing 2 and the printed circuit board 4 is more secure.

[0058] In addition to the above-mentioned high-current BTB connector, the present invention also provides a connector assembly including the high-current BTB connector disclosed in the above-mentioned embodiment. The structures of the other parts of the connector are referred to the prior art and will not be described in detail herein. Among them, the high-current BTB connector refers to a BTB (Board-to-Board, board-to-board connector) with a relatively large current (20A~200A). It is a component used to connect different PCBs (Printed Circuit Boards, printed circuit boards) in electronic devices. The main function of the board-to-board connector is to provide a reliable electrical connection, allowing signals, power or data to be transmitted between one circuit board and another.

[0059] It should be noted that the first slot 21 and the second slot 11, the first end and the second end, the first protrusion 13 and the second protrusion 15 and the third protrusion 16 mentioned in the present invention, wherein the first, second and third are only for distinguishing the different positions, and there is no order of precedence.

[0060] In addition, it should be noted that the orientation or position relationship indicated by "vertical" and the like in the present invention is based on the orientation or position relationship shown in the accompanying drawings, and is only for the purpose of simplifying the description and facilitating understanding, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0061] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other. Any combination of all embodiments provided by the utility model is within the protection scope of this utility model and will not be described in detail here.

[0062] The above is a detailed introduction to the connector assembly and high-current BTB connector provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A high current BTB connector, characterized in that: include: Printed circuit board (4); A connector housing (2) provided with at least one accommodating cavity, a first end of the connector housing (2) being detachably connected to the printed circuit board (4), and a second end of the connector housing (2) being provided with a first slot (21) for plugging into a counterpart (3); A terminal (1) having a first end vertically plugged into the printed circuit board (4), a second end of the terminal (1) being provided with a second slot (11) for plugging into the counterpart (3), the second slot (11) and the first slot (21) being aligned and distributed, and at least two terminals (1) being stacked in the same accommodating cavity.

2. The high current BTB connector according to claim 1, characterized in that: The front side of the terminal (1) is provided with a first protrusion (13), and the back side of the terminal (1) is provided with a groove (14), and the first protrusion (13) and the groove (14) are snap-fitted.

3. The high current BTB connector according to claim 2, characterized in that: The first protrusion (13) and the groove (14) are both long strip structures.

4. The high current BTB connector according to claim 1, characterized in that: The first end of the terminal (1) is provided with a second protrusion (15), and the printed circuit board (4) is provided with waist-shaped holes (41) for clamping a plurality of the second protrusions (15).

5. The high current BTB connector according to claim 4, characterized in that: The second protrusion (15) and the printed circuit board (4) are welded integral structural parts.

6. The high current BTB connector according to claim 1, characterized in that: A third protrusion (16) is provided on both sides of the terminal (1), and a slot for clamping the third protrusion (16) is provided in the connector housing (2).

7. The high current BTB connector according to claim 6, characterized in that: The third protrusion (16) is a wave-shaped structure.

8. The high current BTB connector according to claim 1, characterized in that: The connector housing (2) is provided with two accommodating cavities, two positioning posts (5) are provided at the end of the connector housing (2), the positioning posts (5) are located between the two accommodating cavities, and the printed circuit board (4) is provided with positioning holes (42) for respectively engaging with the two positioning posts (5).

9. The high current BTB connector according to claim 8, characterized in that: The diameters of the two positioning posts (5) are different, and the two positioning posts (5) are staggered.

10. A connector assembly, characterized in that: The high-current BTB connector comprises any one of claims 1 to 9.

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