TWI866278B - Small-size high-current electrical connector - Google Patents

Abstract

Disclosed is an electrical connector comprising a male connector assembly and a female connector assembly detachable to each other, the male connector assembly including a male insulated housing, a plurality of inserting conductive pieces and a plurality of male pins, and the female connector assembly including a female insulated housing, a plurality of receiving conductive pieces and a plurality of female pins, wherein an electrical connection between the male connector assembly and the female connector assembly of the electrical connector is formed by inserting the inserting conductive piece into a flexible crimp gap in the male insulated housing, and wherein the electrical connector is a small-size high-current electrical connector with a side-by-side spacing between the inserting conductive pieces of 2 mm or less and a withstand current of 8 amps or more.

Description

Small high current electrical connector

The present invention relates to an electrical connector, in particular to a small high current electrical connector.

An electrical connector is a device used to establish a conductive connection between parts of a circuit or between different circuits. It usually includes a male component and a female component that can be plugged in and out. Through the conductive connection between the male component and the female component, the electrical connector can connect multiple electronic devices into a larger circuit to perform functions such as power supply and signal transmission.

The specifications and performance requirements of electrical connectors vary depending on the application field and object. Electrical connectors used to connect small electronic components such as chips are usually required to have a smaller size, so that they can only be used for signal transmission with a lower current. Electrical connectors used between power supplies and electrical equipment such as vehicles are required to have sufficient current tolerance performance, resulting in a relatively large size and difficulty in shrinking to the same small size as electrical connectors used for signal transmission.

Nowadays, in the fields of high-performance electronics, motors, medical, industrial, and communications, the simultaneous connection of the power supply and signal transmission of the device inside the system host needs to be achieved by an electrical connector. However, the size of the high-current electrical connectors available on the market with a current tolerance of more than 8 amperes can no longer meet the increasing demand for miniaturization. Therefore, there is an urgent need to provide a small high-current electrical connector that can be used for power supply and signal transmission at the same time and meet the demand for miniaturization.

Therefore, the purpose of the present invention is to provide a small high-current electrical connector that can be used for both power supply and signal transmission, and meet the miniaturization requirements to solve the problems of the prior art.

The present invention solves the problems of the prior art by providing an electrical connector, including a male connector assembly and a female connector assembly that can be plugged and unplugged relative to each other, wherein: the male connector assembly includes a male insulation package seat, a plurality of plug-in conductive sheets and a plurality of male pins, the male insulation package seat has a long strip shape extending left and right, the front side of the male insulation package seat is formed as a plug-in corresponding surface, and the rear side of the male insulation package seat is formed as a male electrical The plurality of plug-in conductive sheets are arranged side by side on the male end insulation package seat in a manner of protruding forward from the plug-in corresponding surface of the male end insulation package seat, each of the plug-in conductive sheets has a plug-in guide edge formed by continuously extending from the upper side of the plug-in conductive sheet through the front side to the lower side, and two conductive contact surfaces connected to the left and right sides of the plug-in guide edge and respectively being the left and right sides of the plug-in conductive sheet, and the plurality of male end pins are respectively self-replacing. A plurality of the plug-in conductive sheets extend backward and are arranged side by side on the male end insulating package seat in a manner of protruding backward from the corresponding surface of the male end circuit board, so that the male end insulating package seat is mounted on the male end circuit board with the corresponding surface of the male end circuit board by welding a plurality of the male end pins to the male end circuit board; and the female end assembly of the connector includes a female end insulating package seat, a plurality of receiving conductive parts and a plurality of female end pins, and the female end insulating package seat has a long strip shape extending left and right, The front side of the female end insulation package seat is formed as a plug-in receiving surface, the rear side of the female end insulation package seat is formed as a female end circuit board corresponding surface, and the female end insulation package seat has a plurality of receiving groove spaces formed by being recessed from the front side to the rear, and the plurality of receiving groove spaces are formed side by side on the female end insulation package seat in a manner corresponding to the plurality of plug-in conductive sheets of the male end assembly of the connector, and each of the receiving groove spaces has a plurality of receiving groove spaces from the front side of the female end insulation package seat. A receiving opening extending to the upper side, a plurality of receiving conductive parts are respectively arranged in a plurality of receiving groove spaces, each of the receiving conductive parts includes a conductive embedding portion and two conductive spring parts, the conductive embedding portion is embedded in the receiving groove space and positioned on the female end insulation package seat, the two conductive spring parts each have an elastic pressing surface, and the two conductive spring parts face each other with the elastic pressing surfaces, and the left and right distance between the elastic pressing surfaces gradually narrows and then gradually widens. The conductive embedded portion is bent and extended forward side by side from the conductive embedded portion in a manner of being arranged in parallel on both sides, and an elastic crimping gap is formed between the two conductive spring pieces. The plurality of female pins are arranged side by side on the female insulating package seat in a manner of extending backward from the conductive embedded portion of the plurality of conductive pieces and protruding backward from the corresponding surface of the female circuit board. The female insulating package seat is mounted on the female circuit board with the corresponding surface of the female circuit board by welding the plurality of female pins to the female circuit board. The male end circuit board is provided with a male end insulation package seat, wherein the male end assembly of the connector is plugged into the female end assembly of the connector in a manner that the plug-in corresponding surface of the male end insulation package seat faces the plug-in receiving surface of the female end assembly of the connector, so that a plurality of the plug-in conductive sheets are respectively inserted into the elastic press-fitting gaps in the plurality of receiving groove spaces through a plurality of the receiving openings, so that in each of the elastic press-fitting gaps, the elastic press-fitting surfaces of the two conductive spring sheet parts are correspondingly press-fitted to the two plug-in conductive sheets. The conductive contact surface is formed to form a conductive contact, so that the male end wire of the male end circuit board is conductively connected to the female end wire of the female end circuit board through the male end circuit board, the male end pin part, the plug conductive sheet, the receiving conductive part, the female end pin part and the female end circuit board, and the parallel spacing between any two adjacent plug conductive sheets is less than 2 mm, and the withstand current of the electrical connector is more than 8 amperes, making the electrical connector a small high-current electrical connector.

In one embodiment of the present invention, an electrical connector is provided, wherein in the male end assembly of the connector, the plug-in guide end edge of each plug-in conductive sheet extends in an arc shape from the front side of the plug-in conductive sheet to form a U-shaped end edge.

In one embodiment of the present invention, an electrical connector is provided, wherein in the male terminal assembly of the connector, each male terminal pin includes a conductive crossbeam and a conductive pin column, the conductive crossbeam extends up and down on the male terminal insulation package seat corresponding to the male terminal circuit board and protrudes on the upper side and lower side of the male terminal insulation package seat to form a conductive contact portion, and the conductive pin column extends backward from the conductive crossbeam to form a columnar shape for insertion into the conductive hole of the male terminal circuit board.

In one embodiment of the present invention, an electrical connector is provided, wherein in the male terminal assembly of the connector, the male terminal pin extends integrally from the plug-in conductive sheet and forms a one-piece component together with the plug-in conductive sheet.

In one embodiment of the present invention, an electrical connector is provided, wherein the male terminal assembly of the connector further includes the male terminal circuit board, the male terminal circuit board is formed with two sets of conductive hole rows arranged side by side up and down, each of the two sets of conductive hole rows has a plurality of conductive holes arranged side by side left and right, a plurality of the male terminal pins are respectively welded to the plurality of the conductive holes in one set of the conductive hole rows, and the plurality of the conductive holes in the other set of the conductive hole rows are respectively provided for welding of a plurality of the male terminal wires.

In one embodiment of the present invention, an electrical connector is provided, wherein in the female end assembly of the connector, the receiving opening of each receiving groove space is further extended from the front side of the female end insulation package seat to the lower side to form a U-shaped opening.

In one embodiment of the present invention, an electrical connector is provided, wherein in the female end assembly of the connector, each of the conductive spring pieces receiving the conductive member has two conductive spring claws, the two conductive spring claws are arranged vertically and parallelly, and a plug-in guide gap is formed between the two conductive spring claws arranged vertically and parallelly.

In one embodiment of the present invention, an electrical connector is provided, wherein in the female end assembly of the connector, the female end pin extends integrally from the conductive embedding portion and forms a single-piece component together with the two conductive spring portions and the conductive embedding portion.

In one embodiment of the present invention, an electrical connector is provided, wherein the female end assembly of the connector further includes the female end circuit board, the female end circuit board is formed with two sets of conductive hole rows arranged side by side up and down, each of the two sets of conductive hole rows has a plurality of conductive holes arranged side by side left and right, a plurality of the female end pins are respectively welded to the plurality of the conductive holes in one set of the conductive hole rows, and the plurality of the conductive holes in the other set of the conductive hole rows are respectively provided for welding of a plurality of the female end wires.

In one embodiment of the present invention, an electrical connector is provided, wherein the male end assembly of the connector further includes the male end circuit board, and the female end assembly of the connector further includes the female end circuit board. The male end circuit board is provided with a male end fixing hole at both sides of the male end insulation package seat on the male end circuit board, and the female end circuit board is provided with a female end fixing hole corresponding to the male end fixing hole at both sides of the female end insulation package seat on the female end circuit board, so that when the male end assembly of the connector is plugged into the female end assembly of the connector, a locking element is inserted through and locks the corresponding male end fixing hole and the female end fixing hole, so that the male end assembly of the connector is fixed to the female end assembly of the connector.

Through the technical means adopted by the present invention, the electrical connector of the present invention can have a small size with a parallel spacing of less than 2 mm between the plug-in conductive sheets while meeting the withstand current of more than 8 amperes. Compared with the small PH3.0 connector (pin pitch 3 mm) commonly used in the industry that can withstand a current of 8A, the electrical connector of the present invention can have a smaller pin pitch of only about 60% less than that of the conventional small electrical connector. Therefore, under the same number of pins, the electrical connector of the present invention only needs less than half the volume of the conventional small electrical connector to meet the condition of withstanding current of more than 8 amperes. Compared with common automotive connectors that can withstand high currents, the electrical connector of the present invention is obviously much smaller than the size of such automotive connectors with a minimum pin pitch of about 5 mm, and can be used in fields where conventional automotive connectors are not applicable and where small size and high current are required. Furthermore, the electrical connector of the present invention connects the wires through a circuit board, making the overall structural strength higher, and is not prone to loosening of the plug-in conductive sheet and poor contact or breakage of the wires due to frequent plugging and unplugging, and has a longer service life. In addition, since the electrical connector of the present invention has the above-mentioned structural features, it can be well designed to meet customized needs and applied to projects such as insert molding wires and waterproof products.

100:Electrical connector

1: Connector male end assembly

11: Male end insulation package seat

111: Plug-in and unplug corresponding surface

112: Corresponding surface of the male end circuit board

12: Plug in the conductive sheet

121: Plug guide edge

122: Conductive contact surface

13: Male pins

131: Conductive beam

132: Conductive needle column

133: Conductive contact part

2: Connector female end assembly

21: Female end insulation package seat

211: Plug-in connection surface

212: Corresponding surface of the female circuit board

213: Accepting groove space

214: Accept the opening

22: Undertake conductive parts

221: Conductive embedding part

222: Conductive shrapnel unit

223: Elastic compression joint

224: Elastic press-fit gap

225: Conductive claws

226: Plug-in guide gap

23: Female pins

3: Male end circuit board

31: Conductive hole

32: Male end fixing hole

4: Female circuit board

41: Conductive hole

42: Female end fixing hole

5: Male wire

6: Female wire

7: Locking element

P: Parallel interval

[Figure 1] is a three-dimensional schematic diagram showing a male connector assembly of an electrical connector according to an embodiment of the present invention; [Figure 2] is an exploded schematic diagram showing a male connector assembly of an electrical connector according to an embodiment of the present invention; [Figure 3] is a three-dimensional schematic diagram showing a female connector assembly of an electrical connector according to an embodiment of the present invention; [Figure 4] is an exploded schematic diagram showing a female connector assembly of an electrical connector according to an embodiment of the present invention; [Figure 5] is a cross-sectional schematic diagram showing an electrical connector according to an embodiment of the present invention.

The following describes the implementation of the present invention based on Figures 1 to 5. The description is not intended to limit the implementation of the present invention, but is an example of the implementation of the present invention.

As shown in Figures 1 to 5, an electrical connector 100 according to an embodiment of the present invention includes a connector male end assembly 1 and a connector female end assembly 2 that are relatively pluggable.

As shown in FIG. 1 and FIG. 2, the male terminal assembly 1 of the connector includes a male terminal insulation package 11, a plurality of plug-in conductive sheets 12 and a plurality of male terminal pins 13. The male terminal insulation package 11 has a strip shape extending left and right. The front side of the male terminal insulation package 11 is formed as a plug-in corresponding surface 111, and the rear side of the male terminal insulation package 11 is formed as a male terminal circuit board corresponding surface 112. The plurality of plug-in conductive sheets 12 are arranged side by side on the male terminal insulation package 11 in a manner of protruding forward from the plug-in corresponding surface 111 of the male terminal insulation package 11. Each of the plug-in conductive sheets 12 has a plug-in conductive sheet 12 extending from the plug-in conductive sheet 12. The upper side surface continuously extends from the front side surface to the lower side surface to form a plug guide edge 121 and two conductive contact surfaces 122 connected to the left and right sides of the plug guide edge 121 and respectively being the left and right sides of the plug conductive sheet 12. The plurality of male pins 13 are arranged side by side on the male insulating package seat 11 in a manner of extending backward from the plurality of plug conductive sheets 12 and protruding backward from the male circuit board corresponding surface 112, so that the male insulating package seat 11 is mounted on the male circuit board 3 with the male circuit board corresponding surface 112 by welding the plurality of male pins 13 to a male circuit board 3.

As shown in FIG. 3 and FIG. 4, the female end assembly 2 of the connector includes a female end insulation package seat 21, a plurality of receiving conductive parts 22 and a plurality of female end pins 23. The female end insulation package seat 21 has a long strip shape extending left and right. The front side of the female end insulation package seat 21 is formed as a plug-in receiving surface 211, and the rear side of the female end insulation package seat 21 is formed as a female end circuit board corresponding surface 212. The female end insulation package seat 21 has a plurality of receiving recesses formed by being recessed from the front side to the rear. The plurality of receiving groove spaces 213 are formed side by side on the female end insulation package 21 in a manner corresponding to the plurality of the plug-in conductive sheets 12 of the male end assembly 1 of the connector, and each of the receiving groove spaces 213 has a receiving opening 214 extending from the front side of the female end insulation package 21 to the upper side, and the plurality of receiving conductive members 22 are respectively arranged in the plurality of receiving groove spaces 213, and each of the receiving conductive members 22 includes a conductive insert The conductive embedded portion 221 and two conductive spring portions 222 are embedded in the receiving groove space 213 and positioned on the female end insulation package seat 21. The two conductive spring portions 222 each have an elastic compression surface 223, and the two conductive spring portions 222 are bent and extended forward from the conductive embedded portion 221 in parallel in a manner that the elastic compression surfaces 223 face each other and the left and right distance between the elastic compression surfaces 223 gradually narrows and then gradually widens. An elastic crimping gap 224 is formed between the electric spring parts 222, and the plurality of female pins 23 are arranged side by side on the female insulating package 21 in a manner of extending backward from the conductive embedding parts 221 of the plurality of conductive parts 22 and protruding backward from the corresponding surface 212 of the female circuit board, so that the female insulating package 21 is installed on the female circuit board 4 with the corresponding surface 212 of the female circuit board by welding the plurality of female pins 23 to a female circuit board 4.

As shown in FIG. 5 , the male connector assembly 1 is plugged into the female connector assembly 2 in such a manner that the plug-in corresponding surface 111 of the male end insulation package 11 faces the plug-in receiving surface 211 of the female connector assembly 2, so that the plurality of plug-in conductive sheets 12 are respectively inserted into the elastic compression gaps 224 in the plurality of receiving groove spaces 213 through the plurality of receiving openings 214, so that the elastic compression gaps 224 in each of the elastic compression gaps 224 are formed. In the gap 224, the elastic pressing surfaces 223 of the two conductive spring parts 222 are correspondingly pressed onto the two conductive contact surfaces 122 of the plug-in conductive sheet 12 to form conductive contact, so that the male end wire 5 of the male end circuit board 3 is conductively connected to the female end wire 6 of the female end circuit board 4 via the male end circuit board 3, the male end pin component 13, the plug-in conductive sheet 12, the receiving conductive component 22, the female end pin component 23 and the female end circuit board 4. Furthermore, in the electrical connector 100, the parallel spacing P between any two adjacent plug-in conductive sheets 12 is less than 2 mm, and the withstand current of the electrical connector 100 is more than 8 amperes, making the electrical connector 100 a small high-current electrical connector.

Preferably, as shown in FIG. 1 and FIG. 2, in the electrical connector 100 of the embodiment of the present invention, in the connector male end assembly 1, the plug-in guide edge 121 of each plug-in conductive sheet 12 is arc-shaped and extends on the front side of the plug-in conductive sheet 12 to form a U-shaped edge. By setting the U-shaped edge, the insertion resistance of the plug-in conductive sheet 12 to the elastic crimping gap 224 can be reduced, so that the connector male end assembly 1 can be more easily plugged into the connector female end assembly 2.

Preferably, as shown in FIG. 2 , in the electrical connector 100 of the embodiment of the present invention, in the connector male terminal assembly 1, each of the male terminal pins 13 includes a conductive crossbeam 131 and a conductive needle post 132. The conductive crossbeam 131 extends up and down on the male terminal circuit board corresponding surface 112 of the male terminal insulation package 11 and protrudes from the upper side and the lower side of the male terminal insulation package 11 to form a conductive contact portion 133. The conductive needle post 132 extends backward from the conductive crossbeam 131 into a columnar shape for insertion into the conductive hole 31 of the male terminal circuit board 3. By setting the male pin 13 of this structure, it is convenient to install the connector male terminal assembly 1 on the male terminal circuit board 3, and it is also convenient to connect with the male terminal wire 5 of the male terminal circuit board 3.

Preferably, as shown in FIG. 2, in the electrical connector 100 of the embodiment of the present invention, in the connector male terminal assembly 1, the male terminal pin 13 is integrally extended from the plug conductive sheet 12, and together with the plug conductive sheet 12, it is formed into a one-piece component. By integrally forming the male terminal pin 13 and the plug conductive sheet 12, redundant contacts can be reduced, thereby improving structural strength and maintaining good electrical conductivity.

Preferably, as shown in FIG. 1 and FIG. 2, in the electrical connector 100 of the embodiment of the present invention, the connector male terminal assembly 1 further includes the male terminal circuit board 3, the male terminal circuit board 3 is formed with two sets of through hole rows arranged side by side, the two sets of through hole rows each have a plurality of through holes 31 arranged side by side, a plurality of male terminal pins 13 are respectively welded to the plurality of through holes 31 of one set of through hole rows, and the plurality of through holes 31 of the other set of through hole rows are respectively provided for welding of a plurality of male terminal wires 5. The regular arrangement of the through holes 31 of the male terminal circuit board 3 can facilitate the installation of the connector male terminal assembly 1 and the welding of the male terminal wires 5, which is conducive to improving production efficiency.

Preferably, as shown in FIG. 3 and FIG. 4, in the electrical connector 100 of the embodiment of the present invention, in the connector female end assembly 2, the receiving opening 214 of each receiving groove space 213 is an L-shaped opening extending from the front side of the female end insulation package seat 21 to the upper side, but the present invention is not limited to this. In other embodiments not shown in the figures, the receiving opening 214 can be further extended from the front side of the female end insulation package seat 21 to the lower side to form a U-shaped opening. By providing the L-shaped and U-shaped receiving opening 214, the male end assembly of the connector and the female end assembly of the connector still have a relative rotation margin after being plugged in, and can be finely adjusted according to the actual space limitations of the application field.

Preferably, as shown in FIG. 3 and FIG. 4, in the electrical connector 100 of the embodiment of the present invention, in the connector female end assembly 2, each conductive spring piece portion 222 of each receiving conductive member 22 has two conductive spring claws 225, and the two conductive spring claws 225 are arranged vertically and a plug-in guide gap 226 is formed between the two conductive spring claws 225 arranged vertically. By providing the plug-in guide gap 226, the plug-in conductive sheet 12 can be guided to align with the elastic crimping gap 224, reducing the misalignment in the vertical direction to ensure that a sufficient contact area can be obtained between the receiving conductive member 22 and the plug-in conductive sheet 12.

Preferably, as shown in FIG. 3 and FIG. 4, in the electrical connector 100 of the embodiment of the present invention, in the connector female end assembly 2, the female end pin 23 is integrally extended from the conductive embedding portion 221, and is formed into a single-piece component together with the two conductive spring portions 222 and the conductive embedding portion 221. By integrally forming the female end pin 23 and the receiving conductive member 22, redundant contacts can be reduced, thereby improving structural strength and maintaining good electrical conductivity.

Preferably, as shown in FIG. 3 and FIG. 4, in the electrical connector 100 of the embodiment of the present invention, the connector female end assembly 2 further includes the female end circuit board 4, the female end circuit board 4 is formed with two groups of through hole rows arranged side by side, the two groups of through hole rows each have a plurality of through holes 41 arranged side by side, a plurality of the female end pins 23 are respectively welded to the plurality of through holes 41 of one group of the through hole rows, and the plurality of through holes 41 of the other group of the through hole rows are respectively provided for welding of a plurality of the female end wires 6. The regular arrangement of the through holes 41 of the female end circuit board 4 can facilitate the installation of the connector female end assembly 2 and the welding of the female end wires 6, which is conducive to improving production efficiency.

Preferably, as shown in FIG. 5, in the electrical connector 100 of the embodiment of the present invention, the male end assembly 1 of the connector further includes the male end circuit board 3, and the female end assembly 2 of the connector further includes the female end circuit board 4. The male end circuit board 3 has a male end fixing hole 32 formed on both sides of the male end insulation package 11 on the male end circuit board 3, and the female end circuit board 4 has a male end fixing hole 32 formed on the female end circuit board 4. A female end fixing hole 42 corresponding to the male end fixing hole 32 is respectively provided on both sides of the female end insulating package 21, so that when the male end assembly 1 of the connector is plugged into the female end assembly 2 of the connector, a locking element 7 is passed through and locked through the corresponding male end fixing hole 32 and the female end fixing hole 42, so that the male end assembly 1 of the connector is fixed to the female end assembly 2 of the connector.

With the above structure, the electrical connector 100 of the present invention can have a small size with a parallel spacing P of less than 2 mm between the plug-in conductive sheets 12 while meeting the withstand current of more than 8 amperes. Compared with the PH3.0 connector (pin pitch 3 mm) commonly used in the industry, which is small and can withstand a current of 8A, the electrical connector 100 of the present invention can have a smaller pin pitch of only about 60% less than that of the conventional small electrical connector. Therefore, with the same number of pins, the electrical connector 100 of the present invention can meet the condition of withstanding current of more than 8 amperes with less than half the volume of the conventional small electrical connector. Compared with common automotive connectors capable of withstanding high current, the electrical connector 100 of the present invention is obviously much smaller than such automotive connectors with a minimum pitch of about 5 mm, and can be used in fields where conventional automotive connectors are not applicable and where small size and high current are required. Furthermore, the electrical connector 100 of the present invention connects the wires through the circuit board (male circuit board 3, female circuit board 4), making the overall structural strength higher, and is not prone to loosening of the plug-in conductive sheet and poor contact or breakage of the wires due to frequent plugging and unplugging, and has a longer service life. In addition, since the electrical connector of the present invention has the above-mentioned structural features, it can be well designed to meet customized needs and applied to projects such as insert molding wires and waterproof products.

The above description and explanation are only the description of the preferred embodiment of the present invention. Those with common knowledge of this technology can make other modifications according to the scope of the patent application defined below and the above description, but these modifications should still be for the spirit of the present invention and within the scope of the rights of the present invention.

1: Connector male end assembly

11: Male end insulation package seat

111: Plug-in and unplug corresponding surface

12: Plug in the conductive sheet

121: Plug guide edge

122: Conductive contact surface

133: Conductive contact part

3: Male end circuit board

32: Male end fixing hole

5: Male wire

P: Parallel interval

Claims (9)

An electrical connector includes a connector male end assembly and a connector female end assembly which can be plugged and unplugged relative to each other, wherein: the connector male end assembly includes a male end insulation package seat, a plurality of plug-in conductive sheets and a plurality of male end pins, the male end insulation package seat has a long strip shape extending left and right, the front side of the male end insulation package seat is formed as a plug-in corresponding surface, the rear side of the male end insulation package seat is formed as a male end circuit board corresponding surface, the plurality of plug-in conductive sheets are protruding forward from the plug-in corresponding surface of the male end insulation package seat, The male terminal insulation package is arranged side by side on the left and right sides of the male terminal insulation package. Each of the plug conductive sheets has a plug guide edge formed by continuously extending from the upper side of the plug conductive sheet through the front side to the lower side, and two conductive contact surfaces connected to the left and right sides of the plug guide edge and respectively being the left and right sides of the plug conductive sheet. The plurality of male terminal pins are arranged side by side on the left and right sides of the male terminal insulation package in a manner of extending backward from the plurality of plug conductive sheets and protruding backward from the corresponding surface of the male terminal circuit board. By placing the plurality of plug conductive sheets on the male terminal insulation package, the male terminal insulation package is connected to the male terminal insulation package. A plurality of male end pins are welded to a male end circuit board so that the male end insulation package is mounted on the male end circuit board with the male end circuit board corresponding surface; and the connector female end assembly includes a female end insulation package, a plurality of receiving conductive parts and a plurality of female end pins, the female end insulation package has a long strip shape extending left and right, the front side of the female end insulation package is formed as a plug-in receiving surface, the rear side of the female end insulation package is formed as a female end circuit board corresponding surface, and the female end insulation package has a plurality of conductive parts extending from the front side to the rear side. The plurality of receiving groove spaces are formed by depressions, and the plurality of receiving groove spaces are formed side by side on the female end insulation package seat in a manner corresponding to the plurality of plug-in conductive sheets of the male end assembly of the connector, and each of the receiving groove spaces has a receiving opening extending from the front side surface of the female end insulation package seat to the upper side surface. The plurality of receiving conductive members are respectively arranged in the plurality of receiving groove spaces, and each of the receiving conductive members includes a conductive embedding portion and two conductive spring portions, and the conductive embedding portion is embedded in the receiving groove. The two conductive spring pieces are positioned on the female end insulation package seat by the slot space, and the two conductive spring pieces each have an elastic compression surface, and the two conductive spring pieces are bent and extended forward from the conductive embedding portion in parallel in a manner that the elastic compression surfaces face each other and the left and right distance between the elastic compression surfaces gradually narrows and then gradually widens, and an elastic compression gap is formed between the two conductive spring pieces, and the plurality of female end pins are respectively extended backward from the plurality of conductive embedding portions receiving the conductive pieces and protrude backward from the corresponding surface of the female end circuit board. The male end insulating package seat is arranged side by side on the left and right sides in a manner of extending outward, so that the female end insulating package seat is installed on the female end circuit board with the corresponding surface of the female end circuit board by welding a plurality of the female end pins to a female end circuit board, wherein the male end assembly of the connector is plugged into the female end assembly of the connector in a manner that the plug-in corresponding surface of the male end insulating package seat faces the plug-in receiving surface of the female end assembly of the connector, so that the plurality of plug-in conductive sheets are respectively inserted into the plurality of receiving grooves through the plurality of receiving openings. The elastic crimping gaps are formed in between, so that in each of the elastic crimping gaps, the elastic crimping surfaces of the two conductive spring pieces are correspondingly crimped to the two conductive contact surfaces of the plug-in conductive sheet to form conductive contact, so that the male end wire of the male end circuit board is conductively connected to the female end wire of the female end circuit board through the male end circuit board, the male end pin, the plug-in conductive sheet, the receiving conductive member, the female end pin and the female end circuit board, and the side-by-side spacing between any two adjacent plug-in conductive sheets is 2 mm or more. The electrical connector has a withstand current of more than 8 amperes, making the electrical connector a small high-current electrical connector, wherein in the male terminal assembly of the connector, each male terminal pin includes a conductive crossbeam and a conductive pin column, the conductive crossbeam extends up and down on the male terminal insulation package seat corresponding to the male terminal circuit board and protrudes on the upper side and lower side of the male terminal insulation package seat to form a conductive contact portion, and the conductive pin column extends backward from the conductive crossbeam to form a columnar shape for insertion into the conductive hole of the male terminal circuit board. An electrical connector as described in claim 1, wherein in the male end assembly of the connector, the plug-in guide end edge of each plug-in conductive sheet extends in an arc shape from the front side of the plug-in conductive sheet to form a U-shaped end edge. An electrical connector as described in claim 1, wherein in the male terminal assembly of the connector, the male terminal pin extends integrally from the plug-in conductive sheet and forms a one-piece component together with the plug-in conductive sheet. The electrical connector as described in claim 1, wherein the male terminal assembly of the connector further includes the male terminal circuit board, the male terminal circuit board is formed with two sets of conductive hole rows arranged side by side up and down, each of the two sets of conductive hole rows has a plurality of conductive holes arranged side by side left and right, a plurality of the male terminal pins are respectively welded to the plurality of the conductive holes in one set of the conductive hole rows, and a plurality of the conductive holes in the other set of the conductive hole rows are respectively provided for welding a plurality of the male terminal wires. The electrical connector as described in claim 1, wherein in the female end assembly of the connector, the receiving opening of each receiving groove space is further extended from the front side of the female end insulation package seat to the lower side to form a U-shaped opening. An electrical connector as described in claim 1 or 2, wherein in the female end assembly of the connector, each of the conductive spring parts receiving the conductive member has two conductive spring claws, the two conductive spring claws are arranged vertically and parallel to each other, and a plug-in guide gap is formed between the two conductive spring claws arranged vertically and parallel to each other. An electrical connector as described in claim 1, wherein in the female end assembly of the connector, the female end pin extends integrally from the conductive embedding portion and forms a one-piece component together with the two conductive spring portions and the conductive embedding portion. The electrical connector as described in claim 1, wherein the female end assembly of the connector further includes the female end circuit board, the female end circuit board is formed with two sets of through hole rows arranged side by side up and down, each of the two sets of through hole rows has a plurality of through holes arranged side by side left and right, a plurality of the female end pins are respectively welded to the plurality of through holes in one set of the through hole rows, and a plurality of the through holes in the other set of the through hole rows are respectively provided for welding of a plurality of the female end wires. The electrical connector as described in claim 1, wherein the male end assembly of the connector further includes the male end circuit board, and the female end assembly of the connector further includes the female end circuit board, the male end circuit board is provided with a male end fixing hole at both sides of the male end insulation package seat on the male end circuit board, and the female end circuit board is provided with a female end fixing hole corresponding to the male end fixing hole at both sides of the female end insulation package seat on the female end circuit board, so that when the male end assembly of the connector is plugged into the female end assembly of the connector, a locking element is inserted through and locks the corresponding male end fixing hole and the female end fixing hole, so that the male end assembly of the connector is fixed to the female end assembly of the connector.

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