Low inductance high voltage flat cable connector and method of use

Abstract

The invention discloses a low-inductance high-voltage flat cable connector and a use method. The low-inductance high-voltage flat cable connector comprises a male head socket, a female head socket, a male head contact pin, a female head contact pin, a base connecting screw, a case connecting screw and a flat cable male head socket. After the male contact pin and the female contact pin are welded with the high-voltage level and the ground level of the flat cable, the male contact pin fixing groove in the female contact base is inserted along the female contact pin fixing groove in the male contact base, and epoxy resin is filled and sealed at the tail end of the base to fix the contact pins and the flat cable. And meanwhile, the male head base and the female head base are connected and fixed through base connecting screws to complete cable connection. The flat cable connecting groove is designed to be connected with the flat cable, the contact area is increased when the flat cable connecting groove is connected with the flat cable, the soldering tin flow guide through hole is formed, pseudo soldering is prevented, and the electrical connectivity is enhanced. When the flat cable connector is connected with a flat cable, the loop inductance is effectively reduced, and the high-voltage resistance is not less than 10 kV.

Description

Technical Field

[0001] The present invention relates to the fields of pulse power technology and high voltage connectors, and in particular to a low-inductance high voltage flat cable connector and a use method thereof. Background Art

[0002] Pulsed power technology emerged in the 1930s and flourished in the 1960s, driven by military demands. Currently, this technology has been widely applied and researched in fields such as nuclear explosion simulation, plasma technology, electromagnetic emission technology, and controlled laser fusion. With technological advancements, its applications have expanded from military to civilian use, with further developments in environmental protection, bioengineering, medical devices, new materials research and development, and laser power supplies.

[0003] Pulse power technology releases a certain amount of energy in a very short time to generate extremely high instantaneous output power, which is usually manifested in the form of high voltage and strong current, and can form extreme electromagnetic conditions. Pulse power devices that use flat cables to transmit energy and generate electrical pulses require low loop inductance to minimize energy loss and improve pulse leading edge time. However, there are currently no electrical connectors compatible with flat cables that are both high-voltage resistant and low-inductance. Summary of the Invention

[0004] The present invention provides a low-inductance, high-voltage flat cable connector and a method of use thereof, which can solve at least one of the technical problems in the background art.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A low-inductance high-voltage flat cable connector, comprising a male socket, a female socket, a plurality of male pins and female pins fixed to the male socket and the female socket, and a flat cable, characterized in that: The female socket and the male socket are provided with a flat cable connection groove adapted for a flat cable; The female pin and the male pin are connected to the flat cable through the flat cable connection groove.

[0006] Furthermore, the front end of the male socket base, the lower end of the male base and the upper section of the male base are both provided with chamfered edges.

[0007] Furthermore, the male pin and the female pin of the present invention are flat pins, and the male pin and the female pin are matched with each other in an axial hole; Furthermore, the male plug pin and the female plug pin of the present invention are also provided with solder conduction holes.

[0008] Furthermore, the female pins of the present invention are welded to the high voltage level and the ground level of the flat cable and are inserted along the female pin fixing grooves in the male base; The male pins are welded to the high voltage level and the ground level of the flat cable and are inserted along the male pin fixing slots in the female base; Wherein, a male plug high voltage insulation baffle is provided between the high voltage level and the ground level of the female base; A female plug pin high voltage insulation baffle is provided between the high voltage level and the ground level of the male socket.

[0009] In another aspect, a method for using a low-inductance high-voltage flat cable connector includes the following steps: S1. Confirm the high voltage level and ground level of the flat cable, and insert the flat cable along the two female pin fixing slots and the two male pin fixing slots; S2. Fill the male connector base with epoxy resin to secure the male and female connector pins to the flat cable. S3. Use the base connecting screws to connect and fix the male base and female base to complete the cable connection.

[0010] In summary, the present invention utilizes a flat cable connection slot designed to accommodate a flat cable, with male pins and female sockets designed to connect to the flat cable. This increases the contact area between the flat cable connection slot and the flat cable, and provides solder conduction holes to prevent cold solder joints and enhance electrical connectivity. The present invention also features a short distance between the high-voltage and ground levels, effectively reducing connector inductance. Furthermore, a high-voltage insulating baffle is provided between the two levels, enhancing the present invention's high-voltage resistance.

[0011] At the same time, the surface of both the male and female pins is plated with a 30µm thick silver layer (or gold plating) and the pins are designed as flat pins. The male and female pins are matched with axial holes, which can effectively improve the electrical connectivity between the two.

[0012] Through the above three points, the loop inductance of the present invention is effectively reduced when connecting flat cables, and the high voltage resistance is not less than 10kV. The loop inductance of the present invention is about 13nH, while the loop inductance of the ordinary connector is about 40nH. Figure 13 The short-circuit discharge waveforms of the flat cable connected to the present invention and the ordinary electrical connector in a 200nF capacitance, 4kV charging pulse power system are compared. Compared with the ordinary connector, the d𝑖 / d𝑡 ratio is significantly improved, and the discharge period is compressed by about 120ns.

[0013] The present invention has the characteristics of carrying large current pulses, low inductance, and high-voltage-resistant adaptable flat cables. It can enable the pulse power system to be quickly plugged and installed when using flat cables, greatly improving the working efficiency of the pulse power system using flat cables and effectively reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] Figure 1 This is an exploded view of the flat cable connector of the present invention; Figure 2 is a cross-sectional view of the flat cable connector of the present invention; Figure 3 This is a 3D view of the front end of the male socket; Figure 4 This is a 3D view of the male socket end; Figure 5 This is a cross-sectional view of the male socket; Figure 6 This is a 3D view of the front of the female socket; Figure 7 3D view of the female socket end Figure 8 This is a cross-sectional view of the female socket; Figure 9 A 3D view of the male header pins; Figure 10 This is the front view of the male header pin; Figure 11 A 3D view of the female header pins; Figure 12 This is a cross-sectional view of the female header pin; Figure 13 The figure compares the short-circuit discharge waveforms in a pulse power system in which a flat cable is connected to the present invention and a conventional electrical connector.

[0016] In the figure: 100, male socket; 200, female socket; 300, male pin; 400, female pin; 500, base connection screw; 600, chassis connection screw; 700, flat cable; 101, male base lower end chamfer; 102, female pin fixing groove; 103, male base upper end chamfer; 104, male base connection threaded hole; 105, female pin high-voltage insulation baffle; 201, female base connection threaded hole; 202 male pin fixing groove; 2 03. Chamfer of the lower end of the female connector base; 204. Chamfer of the upper end of the female connector base; 205. High-voltage insulation baffle of the male connector pin; 206. Chassis fixing hole; 301. Solder guide hole of the male connector pin; 302. Flat cable connection slot of the male connector pin; 303. Chamfer of the round head of the male connector pin; 304. Deformation slot of the male connector pin; 401. Solder guide hole of the female connector pin; 402. Flat cable connection slot of the female connector pin; 403. Chamfer of the front end slot of the female connector pin; 404. Deformation slot of the female connector pin. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0018] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 、 Figure 2 As shown, a low-inductance high-voltage flat cable connector includes a male socket 100; a female socket 200, a male pin 300, a female pin 400, a base connecting screw 500, a chassis connecting screw 600, and a flat cable male socket 700; The front end structure of the male socket 100 is as follows: Figure 3 As shown, the chamfer 101 at the lower end of the male socket base where the male and female connectors are connected is R2, and the chamfer 103 at the upper end of the male socket base is R1; Two female pin fixing slots 102 are provided in the middle of the front end of the male base, and there is a male base connecting threaded hole 104 at each end of the ear for connecting the male socket 100 to the female socket 200 using the base connecting screw 500; The structure of the male socket end is as follows Figure 4 As shown, a female pin high-voltage insulation baffle 105 is provided in the middle of the fixing place of the two female pins 400 at the tail end of the male base, which is used to improve the insulation capacity between the two electrodes of the male base and prevent surface breakdown.

[0020] The internal structure of the male socket 100 is as follows: Figure 5 As shown, after the two female pins are welded to the high voltage level and the ground level of the flat cable, they are inserted along the female pin fixing groove 102 in the male base, and epoxy resin is poured at the tail end of the male base to fix the female pin 400 and the flat cable 700; after the two male pins 102 are welded to the high voltage level and the ground level of the flat cable, they are inserted along the male pin fixing groove 202 in the female base, and epoxy resin is poured at the tail end of the female base to fix the male pin 300 and the flat cable 700; pouring epoxy resin not only fixes the two electrodes, but also improves the insulation ability between the two electrodes; the male base connecting threaded holes 104 at both ends of the male base and the female base connecting threaded holes 201 on both sides of the front end of the female base are connected by base connecting screws 500, and the male base and the female base cooperate with each other to connect the male pin 300 and the female pin 400; the low inductance high voltage flat cable connector is fixed to the chassis by the chassis fixing screws passing through the chassis fixing through-holes 206.

[0021] The front structure of the female socket is as follows Figure 6 As shown, the diameter of the hole 201 at the rear end of the female pin fixing groove 102 is the same as the diameter of the front end shaft of the female pin 400, and the two cooperate with each other; the length and width of the front end groove of the female pin fixing groove 102 are 0.5mm larger than the fixing groove of the female pin at the rear end, thereby providing a radial movement space for the female pin 400 when the male pin 300 is inserted; The lower chamfer 203 of the female base at the front end of the female base where the male and female heads are connected is R2, and the upper chamfer 204 of the female base is R1; the upper and lower chamfers of the female base match the upper and lower chamfers of the male base to prevent the electrical level of the two bases from being reversed when plugging in. If the electrical level is reversed, the two bases cannot be inserted.

[0022] The structure of the female socket end is as follows Figure 7 As shown, there is a female base connection threaded hole 201 on each side of the front end of the female base, and two male pin fixing grooves 202 are provided in the middle of the female base; two chassis fixing through holes 206 are provided at the ears at both ends of the female base; a male pin high-voltage insulation baffle 205 is provided in the middle of the two male pin fixing places at the tail end of the female base, which can improve the insulation capacity between the two electrodes of the female base and prevent surface breakdown.

[0023] The internal structure of the female socket 200 is as follows: Figure 8 As shown, the size of the male pin fixing groove 202 is the same as the size of the front end of the male pin, and the two cooperate with each other; the periphery of the two male pin fixing grooves 202 has a short step that is 0.5mm larger than the length and width of the male pin fixing groove 202 and 5mm high. The short step cooperates with the front end groove of the female pin fixing groove 102. This step will be inserted into the front end of the female pin fixing groove 102, which can effectively improve the insulation capacity of the two electrical levels of the plug-in part of the present invention.

[0024] The male pin structure is as follows Figure 9 and Figure 10 As shown, the surface of the male pin has a 30µm thick silver plating layer (or gold plating) to improve the conductivity of the male pin; the front end of the male pin cooperates with the male pin fixing groove 202, and the front end of the male pin is provided with a male pin round chamfer 303 with a chamfer size of R1. This chamfer facilitates the smooth plugging of the male pin 300 and the female pin 400; a 0.5mm thick male pin deformation groove 304 is provided at the center of the plug shaft at the front end of the male pin, which is conducive to the contact between the male pin 300 and the female pin 400; a male pin flat cable connection groove 302 is provided above the tail end of the male pin; there are two male pin solder guide holes 301 on the upper surface of the tail end of the male pin, which are connected to the male pin flat cable connection groove 302. This hole can effectively prevent cold soldering when soldering the flat cable.

[0025] The female pin structure is as follows Figure 11 and Figure 12 As shown, the surface of the female pin 400 has a 30µm thick silver plating layer (or gold plating) to improve the conductivity of the female pin 400; the front end of the female pin mates with the female pin fixing groove 102, and the front end of the female pin 400 is provided with a groove for mating with the male pin 300. The front end of the groove is provided with a chamfer 403 of the female pin front end groove, with a size of C1. This chamfer facilitates smooth mating of the female pin 400 and the male pin 300; the center of the pin at the front end of the female pin is provided with a female pin deformation groove 404, which is conducive to better contact between the female pin 400 and the male pin 300. A female pin flat cable connection groove 402 is provided above the female pin tail end; the upper surface of the female pin tail has two female pin solder guide holes 401 communicating with the female pin flat cable connection groove 402, which can effectively prevent cold soldering when soldering the flat cable.

[0026] The following is a detailed description of the use of high voltage flat cable connectors: S1. Confirm the high voltage level and ground level of the flat cable, and insert the flat cable along the two female pin fixing slots and the two male pin fixing slots; S2. Fill the male connector base with epoxy resin to secure the male connector pins, female connector pins, and flat cable. S3. Use the base connecting screws to connect and fix the male base and female base to complete the cable connection.

[0027] like Figure 13 The figure shows a comparison of short-circuit discharge waveforms in a pulse power system when the present invention and a conventional electrical connector are connected to a flat cable. The red line is the short-circuit waveform of the present invention, and the blue line is the short-circuit waveform of the conventional connector.

[0028] In summary, the present invention utilizes a flat cable connection slot designed to accommodate a flat cable, with male pins and female sockets designed to connect to the flat cable. This increases the contact area between the flat cable connection slot and the flat cable, and provides solder conduction holes to prevent cold solder joints and enhance electrical connectivity. The present invention also features a short distance between the high-voltage and ground levels, effectively reducing connector inductance. Furthermore, a high-voltage insulating baffle is provided between the two levels, enhancing the present invention's high-voltage resistance.

[0029] At the same time, the surface of both the male and female pins is plated with a 30µm thick silver layer (or gold plating) and the pins are designed as flat pins. The male and female pins are matched with axial holes, which can effectively improve the electrical connectivity between the two.

[0030] The above three points make the loop inductance of the present invention effectively reduced when connecting flat cables, and the high voltage resistance is not less than 10kV. The loop inductance of the present invention is about 13nH, while the loop inductance of the ordinary connector is about 40nH. Figure 13 The short-circuit discharge waveforms of the flat cable connected to the present invention and the ordinary electrical connector in a 200nF capacitance, 4kV charging pulse power system are compared. Compared with the ordinary connector, the d𝑖 / d𝑡 ratio is significantly improved, and the discharge period is compressed by about 120ns.

[0031] The present invention has the characteristics of carrying large current pulses, low inductance, and high-voltage-resistant adaptable flat cables. It can enable the pulse power system to be quickly plugged and installed when using flat cables, greatly improving the working efficiency of the pulse power system using flat cables and effectively reducing energy loss.

[0032] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0034] Each embodiment in this specification is described in a related manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiment is generally similar to the method embodiment, so the description is relatively simple. For related parts, refer to the description of the method embodiment.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A low-inductance, high-voltage flat cable connector, comprising: A male socket, a female socket, and a plurality of male pins and female pins fixed to the male socket and the female socket, characterized in that: The female socket and the male socket are provided with a flat cable connection groove adapted for a flat cable; The female pin and the male pin are connected to the flat cable through the flat cable connection groove.

2. The low-inductance high-voltage flat cable connector according to claim 1, wherein: The male socket base is provided with chamfers around its periphery, and the female socket base is provided with matching chamfers.

3. The low-inductance high-voltage flat cable connector according to claim 1, wherein: The male pin and the female pin are flat pins, and the male pin and the female pin are matched with each other in an axial hole.

4. The low-inductance high-voltage flat cable connector according to claim 3, wherein: The male plug pin and the female plug pin are also provided with solder conducting holes.

5. The low-inductance high-voltage flat cable connector according to claim 1, wherein: The female pins are welded to the high voltage level and the ground level of the flat cable and are inserted along the female pin fixing grooves in the male base; The male pins are welded to the high voltage level and the ground level of the flat cable and are inserted along the male pin fixing slots in the female base; Wherein, a male plug high voltage insulation baffle is provided between the high voltage level and the ground level of the female base; A female plug pin high voltage insulation baffle is provided between the high voltage level and the ground level of the male socket.

6. The method for using the low-inductance high-voltage flat cable connector according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Confirm the high voltage level and ground level of the flat cable, and insert the flat cable along the two female pin fixing slots and the two male pin fixing slots; S2. Fill the male connector base with epoxy resin to secure the male and female connector pins to the flat cable. S3. Use the base connecting screws to connect and fix the male base and female base to complete the cable connection.

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