A power connector capable of passing large current

Abstract

The utility model discloses a power connector of can pass through large current, including male seat and female seat, male seat includes male seat casing and a plurality of male seat connecting terminal, male seat connecting terminal is respectively worn in male seat casing inside, and the contact end of male seat connecting terminal is respectively extended to male seat chamber, and male seat connecting terminal sets up two power pins and at least one signal pin, and female seat includes female seat casing, crown spring and the female seat connecting terminal of hollow tubular, and female seat connecting terminal is respectively installed in female seat casing inside, and the contact end of female seat connecting terminal is respectively set up and extends to the plug -in end of female seat casing in response to each male seat connecting terminal, and crown spring is equipped with two and is respectively coaxial fixed setting in the jack hole of the female seat connecting terminal of corresponding two power pins. The utility model discloses through the multipoint elastic contact of crown spring, and the contact area and pressure of male seat connecting terminal and female seat connecting terminal are greatly promoted, and the contact resistance is reduced, and the demand of large current stable transmission is satisfied.

Description

Technical Field

[0001] This utility model relates to the field of power connector technology, and more specifically, to a power connector capable of carrying large currents. Background Technology

[0002] A connector is a connection device used to connect two active devices to achieve the transmission of current and / or signals. It is widely used in various fields. Traditional connectors, due to their single-sided or double-sided contact design, are low in cost and simple in structure, but they have problems such as small contact area, low current carrying capacity, and easy heat generation and oxidation. In high-current application scenarios, they also face limitations such as unstable contact pressure, weak anti-interference ability, low heat dissipation efficiency, and easy deformation during frequent insertion and removal or vibration, which leads to a drop in contact pressure. They are difficult to meet the connection requirements of high current and high reliability. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a power connector with a large contact area, strong current carrying capacity, and high stability that can carry large currents.

[0004] To achieve the above objectives, this utility model provides a power connector capable of carrying high current, comprising a male connector and a female connector that mates with the male connector. The male connector includes a male connector housing and a plurality of male connector connection terminals. The insertion end of the male connector housing forms a male connector chamber. The male connector connection terminals are respectively disposed inside the male connector housing, and the contact ends of the male connector connection terminals respectively extend into the male connector chamber. The male connector connection terminals are configured as two power pins and at least one signal pin. The female connector includes a female connector housing, a crown spring, and a hollow tubular female connector connection terminal. The female connector connection terminals are respectively installed inside the female connector housing. The contact ends of the female connector connection terminals are respectively disposed corresponding to each male connector connection terminal and extend to the insertion end of the female connector housing. The crown spring has two crown springs, which are respectively coaxially fixedly disposed in the insertion holes of the female connector connection terminals corresponding to the two power pins. Each insertion hole passes through the contact end of the female connector connection terminal.

[0005] Preferably, a push-button snap-fit ​​spring is provided at the bottom of the female housing, the rear end of the push-button snap-fit ​​spring is provided with a button portion that is widened and extends out of the female housing, and the front end of the push-button snap-fit ​​spring is provided with a wedge-shaped docking block.

[0006] Preferably, the male seat further includes a fixing piece. The bottom inner end face of the male seat cavity of the male seat housing is integrally formed with a limiting groove. The fixing piece is fixedly disposed in the limiting groove. The top front surface of the fixing piece is folded upward to form an abutting protrusion. When the male seat and the female seat are inserted into each other, the mating block is inserted into the limiting groove and engages with the abutting protrusion.

[0007] Preferably, the female connector further includes two female connector copper busbars arranged in an inverted L-shape, which are respectively arranged opposite each other inside the female connector housing, and the front end of each female connector copper busbar is fixedly connected to its corresponding female connector connection terminal.

[0008] Preferably, the back of the female connector housing is provided with two female connector connecting cables, the ends of which are respectively inserted into the female connector housing and fixedly connected to the ends of their respective female connector copper busbars by high-frequency welding.

[0009] Preferably, the two power pins include a power supply pin and a ground pin.

[0010] Preferably, the male connector further includes a first male connector copper busbar and a second male connector copper busbar. Both the first and second male connector copper busbars include a male connector copper busbar contact head, a male connector copper busbar base, and a male connector copper busbar grounding part connected sequentially from bottom to top. The male connector copper busbar contact head is fixedly connected to its corresponding male connector connection terminal. The male connector copper busbar base is bent forward and upward relative to the male connector copper busbar contact head. The rear end area of ​​the male connector copper busbar base is bent outward, so as to be staggered from the front end area and not on the same center line. The male connector copper busbar grounding part is bent downward relative to the outside of the male connector copper busbar base. The male connector copper busbar grounding part is provided with a connection hole for bolt fixing.

[0011] Preferably, the male connector contact head of the first male connector copper busbar and the male connector contact head of the second male connector copper busbar are fixedly connected to their respective male connector connection terminals by high-frequency welding.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model has a novel structure and reasonable design. By setting a crown spring in the socket of the female connector corresponding to the two power pins, and utilizing the distributed multi-contact and elastic self-adaptive characteristics of the crown spring, the effective contact area and flow capacity between the power pin and the female connector are greatly improved. This ensures that the connector can remain stable under vibration or frequent plugging and unplugging conditions, and solves the problems of small contact area and insufficient current carrying capacity of traditional connectors. It meets the requirements of high current transmission and high reliability, and is particularly suitable for high-power electronic equipment such as servers and graphics cards.

[0014] 2. In this utility model, the connection between the end of the female connector cable and the end of the female connector copper busbar is fixed by high-frequency welding. Compared with the traditional hot welding method, high-frequency welding can reduce heat damage, improve the stability of welding quality, reduce contact resistance and enhance contact reliability, thereby optimizing the overall performance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded view of the power connector capable of carrying high current provided in this embodiment of the utility model. Figure 1 ;

[0017] Figure 2 This is an exploded view of the power connector capable of carrying high current provided in this embodiment of the utility model. Figure 2 ;

[0018] Figure 3 This is a partially exploded schematic diagram of a power connector capable of carrying large current provided in an embodiment of this utility model;

[0019] Figure 4 This is an exploded cross-sectional view of the power connector capable of carrying large current provided in this embodiment of the utility model.

[0020] Figure 5 This is a schematic diagram of the insertion state of the power connector capable of carrying high current provided in this embodiment of the utility model;

[0021] Figure 6 This is a partial structural diagram of the plugging state of the power connector capable of carrying high current provided in this embodiment of the utility model.

[0022] Figure 7 This is an enlarged cross-sectional view of the power connector capable of carrying high current provided in this embodiment of the present invention, showing its plugging state. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Please refer to Figure 1The present invention provides a power connector capable of carrying high current, including a male connector 1 and a female connector 2 that is inserted into the male connector 1. The male connector 1 includes a male connector housing 11 and a plurality of male connector connection terminals 12. The female connector 2 includes a female connector housing 21, a crown spring 22 and a hollow tubular female connector connection terminal 23, etc. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, the male connector housing 11 can form a male connector chamber 110 at the plug end, and the male connector connection terminals 12 are respectively disposed inside the male connector housing 11. The contact ends of the male connector connection terminals 12 extend into the male connector chamber 110. The male connector connection terminals 12 are configured as two power pins 121 and at least one signal pin 122.

[0026] In this embodiment, the two power pins 121 may include a power supply pin and a ground pin.

[0027] The male housing 11 provides structural support and insulation protection. The two power pins 121 are responsible for power supply and grounding respectively, meeting the circuit integrity requirements of high current transmission. The signal pin 122 is used to transmit control or feedback signals. Power and signal transmission are separated to avoid mutual interference.

[0028] Specifically, the male seat 1 may also include a first male seat copper busbar 13 and a second male seat copper busbar 14. Both the first male seat copper busbar 13 and the second male seat copper busbar 14 include a male seat copper busbar contact head 101, a male seat copper busbar base 102 and a male seat copper busbar grounding part 103 connected sequentially from bottom to top.

[0029] Furthermore, the male connector copper busbar contact head 101 can be fixedly connected to its corresponding male connector connection terminal 12. The male connector copper busbar base part 102 is bent forward and upward relative to the male connector copper busbar contact head 101. The rear end area of ​​the male connector copper busbar base part 102 is bent outward, so that it is staggered from the front part area and not on the same center line. The male connector copper busbar grounding part 103 is bent downward relative to the outside of the male connector copper busbar base part 102. The male connector copper busbar grounding part 103 is provided with a connection hole 104 for bolt fixing.

[0030] Preferably, the male connector copper busbar contact head 101 of the first male connector copper busbar 13 and the male connector copper busbar contact head 101 of the second male connector copper busbar 14 can be fixedly connected to their respective male connector connection terminals 12 by high-frequency welding.

[0031] In practice, the male connector copper busbar contact head 101 is fixed to the male connector connection terminal 12. The male connector copper busbar base 102 and the male connector copper busbar grounding part 103 bear and conduct large current through a bending structure. The connection hole 104 of the grounding part is used for bolt fixing to achieve a stable connection with the external circuit.

[0032] like Figure 2 and Figure 3 As shown, the female connector terminals 23 are respectively installed inside the female connector housing 21. The contact ends of the female connector terminals 23 are respectively provided corresponding to each male connector terminal 12 and extend to the insertion end of the female connector housing 21. The crown spring 22 is provided with two and is coaxially fixed in the insertion holes 230 of the female connector terminals 23 corresponding to the two power pins 121. Each insertion hole 230 passes through the contact end of the female connector terminal 23.

[0033] Among them, such as Figure 5 and Figure 6 As shown, when the male connector 1 and the female connector 2 are plugged into each other, the arc-shaped structure of the female connector housing 21 matches that of the male connector housing 11. The female connector connection terminal 23 is set to correspond to the male connector connection terminal 12, and its socket 230 is used for the male connector pin to be inserted to form an electrical connection path. The terminal corresponding to the power pin is provided with a crown spring 22, and the female connector connection terminal corresponding to the signal pin directly realizes signal transmission.

[0034] In this embodiment, the crown spring 22 can be a common connector crown spring available on the market. Its structure is usually made of a metal sheet stamped into a crown-like shape, with multiple elastic contact claws distributed around its circumference. When the pin is inserted into the crown spring, these contact claws are stretched open and generate radial elastic force, forming multi-point surface contact with the pin surface. In this embodiment, its structure is not limited.

[0035] The crown spring 22 is preferably made of C17200 beryllium copper material. It needs to make tight contact with the male connector terminal 12 through elastic deformation, which increases the effective contact area several times and ensures a low-impedance path for current conduction. The high elasticity of beryllium copper material ensures that the crown spring 22 maintains good contact pressure during insertion, removal and long-term use, avoiding local overheating caused by poor contact; its high conductivity can also match the needs of high current transmission, reduce the additional losses caused by contact resistance, and improve the reliability and durability of the connection.

[0036] Preferably, the female connector 2 may also include two female connector copper busbars 25 arranged in an inverted L-shaped structure. The two female connector copper busbars 25 are respectively arranged opposite to each other inside the female connector housing 21, and the front end of each female connector copper busbar 25 is fixedly connected to its corresponding female connector connection terminal 23.

[0037] In order to enable the female connector 2 to be connected to an external power source or equipment, two female connector connection cables 26 can be provided on the back of the female connector housing 21. The ends of the female connector connection cables 26 are respectively inserted into the female connector housing 21 and fixedly connected to the ends of their respective female connector copper busbars 25 by high-frequency welding.

[0038] In this embodiment, the fixed connection between the male connector copper busbar contact head 101 and the male connector connection terminal 23, as well as the fixed connection between the female connector connection cable 26 end and the female connector copper busbar 25 end, are all fixed by high-frequency welding. Compared with traditional hot welding, high-frequency welding can reduce heat damage, improve welding quality stability, reduce contact resistance and enhance contact reliability, thereby optimizing overall performance.

[0039] like Figure 4 As shown, a push-button snap spring 24 can be inserted through the bottom of the female housing 21. The rear end of the push-button snap spring 24 is provided with a button part 241 with increased width that extends out of the female housing 21. The bottom of the front end of the push-button snap spring 24 is provided with a wedge-shaped docking block 242.

[0040] Furthermore, the male seat 1 may also include a fixing piece 14. The bottom inner end face of the male seat cavity 110 of the male seat housing 11 is integrally formed with a limiting groove 13. The fixing piece 14 is fixedly disposed in the limiting groove 13. The front top surface of the fixing piece 14 is folded upward to form an abutting protrusion 141.

[0041] like Figure 7 As shown, in specific implementation, when the male and female connectors are inserted into each other, the mating block 242 is inserted into the limiting groove 13 and engages with the abutting protrusion 141. The button part 241 is for manual pressing operation. Pressing down and pulling outwards the male connector 1 can achieve quick separation of the male connector 1 and the female connector 2.

[0042] In this embodiment, both the male and female copper busbars are made of C1100 pure copper. The male copper busbar has a width and height of 1.4×7.0mm and its function is to carry current and conduct electrical energy. The high conductivity of pure copper material can ensure the stable passage of large currents. At the same time, its good ductility and processing performance make it easy to process, meet the structural installation requirements of the connector, and can remain stable under long-term power supply.

[0043] The simulated temperature rise of this connector is as follows: Under operating parameters of 100A×12V=1200W, ambient temperature of 20℃, in an open space, horizontally placed, and with still air, the simulated temperature range is 20℃ to 83.5896℃, with a temperature rise of 55.64~63.58℃, and its Joule heating density is 0 to 2.32551e+08W / m 3 and current density from 0 to 5.80955e+07Amp / m 2 Furthermore, the resistance is 0.000416Ω at 100A and the power loss is 4.16W.

[0044] In summary, this invention significantly improves the effective contact area and current flow capacity between the power pins and the female connector by incorporating a crown spring in the socket of the female connector corresponding to the two power pins. This is achieved by utilizing the distributed multi-contact and elastic adaptive characteristics of the crown spring, ensuring stability even under vibration or frequent plugging and unplugging conditions. This solves the problems of small contact area and insufficient current flow capacity of traditional connectors, meeting the requirements of high current transmission and high reliability. It is particularly suitable for high-power electronic devices such as servers and graphics cards.

[0045] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A power connector capable of carrying high current, characterized in that: The device includes a male connector and a female connector that mates with the male connector. The male connector includes a male connector housing and a plurality of male connector connecting terminals. The insertion end of the male connector housing forms a male connector chamber. The male connector connecting terminals are respectively disposed inside the male connector housing, and the contact ends of the male connector connecting terminals extend into the male connector chamber. The male connector connecting terminals are configured as two power pins and at least one signal pin. The female connector includes a female connector housing, a crown spring, and a hollow tubular female connector connecting terminal. The female connector connecting terminals are respectively installed inside the female connector housing. The contact ends of the female connector connecting terminals are respectively disposed corresponding to each male connector connecting terminal and extend to the insertion end of the female connector housing. The crown spring has two crown springs, which are respectively coaxially fixed in the insertion holes of the female connector connecting terminals corresponding to the two power pins. Each insertion hole passes through the contact end of the female connector connecting terminal.

2. A power connector capable of carrying high current according to claim 1, characterized in that: The bottom of the female housing is provided with a press-type snap-on spring, the rear end of the press-type snap-on spring is provided with a button part that is widened and extends out of the female housing, and the bottom of the front end of the press-type snap-on spring is provided with a wedge-shaped docking block.

3. A power connector capable of carrying high current according to claim 2, characterized in that: The male seat also includes a fixing plate. The bottom inner end face of the male seat cavity of the male seat housing is integrally formed with a limiting groove. The fixing plate is fixedly installed in the limiting groove. The front top surface of the fixing plate is folded upward with an abutting protrusion. When the male seat and the female seat are inserted into each other, the mating block is inserted into the limiting groove and engages with the abutting protrusion.

4. A power connector capable of carrying high current according to claim 1, characterized in that: The female connector also includes two female connector copper busbars arranged in an inverted L-shape. The two female connector copper busbars are respectively arranged opposite each other inside the female connector housing, and the front end of each female connector copper busbar is fixedly connected to its corresponding female connector connection terminal.

5. A power connector capable of carrying high current according to claim 4, characterized in that: The back of the female connector housing is provided with two female connector connecting cables. The ends of the female connector connecting cables are respectively inserted into the female connector housing and fixedly connected to the ends of their respective female connector copper busbars by high-frequency welding.

6. A power connector capable of carrying high current according to claim 1, characterized in that: The two power pins include a power supply pin and a ground pin.

7. A power connector capable of carrying high current according to claim 1, characterized in that: The male connector also includes a first male connector copper busbar and a second male connector copper busbar. Both the first and second male connector copper busbars include a male connector copper busbar contact head, a male connector copper busbar base, and a male connector copper busbar grounding part connected sequentially from bottom to top. The male connector copper busbar contact head is fixedly connected to its corresponding male connector connection terminal. The male connector copper busbar base is bent forward and upward relative to the male connector copper busbar contact head. The rear end area of ​​the male connector copper busbar base is bent outward, so that it is staggered from the front end area and not on the same center line. The male connector copper busbar grounding part is bent downward relative to the outside of the male connector copper busbar base. The male connector copper busbar grounding part is provided with a connection hole for bolt fixing.

8. A power connector capable of carrying high current according to claim 7, characterized in that: The male copper busbar contact head of the first male copper busbar and the male copper busbar contact head of the second male copper busbar are respectively fixedly connected to their respective male connection terminals by high-frequency welding.

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