Power connector and power socket thereof

Abstract

A power supply connector and a power supply jack thereof are provided, the power supply connector comprises an insulation body and two power supply terminals, the insulation body is provided with a butt joint groove and two fixing grooves located behind the two sides of the butt joint groove, and the two power supply terminals are fixed in the corresponding fixing grooves and extend out of the fixing grooves. Each power supply terminal comprises a fixed part fixed in the fixed groove and a plurality of elastic arms extending forwards from the fixed part, the plurality of elastic arms are provided with contact parts protruding into the butt joint groove, the power supply terminal comprises a reinforcing plate, the reinforcing plate is fixed between the inner surface of the fixed part and the inner wall surface of the fixed groove, and the reinforcing plate further extends to form a plurality of additional elastic arms; the additional elastic arm is provided with an additional contact part protruding into the butt joint groove. According to the invention, more current channels can be formed in a limited space so as to reduce the heating problem when the current is increased, and meanwhile, the problems of structure complexity and cost caused by excessive terminal stacking are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electrical connectors, and in particular to a power connector and a power socket thereof. Background Art

[0002] In the design and application of high-current power connectors, improving the current capacity to meet the needs of different scenarios is a key challenge. As the power density of electronic devices continues to increase, the current that power connectors need to carry is also increasing. However, the increase in current will inevitably cause more heat to be generated inside the connector, which in turn causes a series of problems, such as excessive temperature rise, material aging, increased contact resistance, and even potential safety hazards. Therefore, how to effectively increase the current capacity and control heat in a limited space has become a core issue in connector design.

[0003] In traditional methods, a common solution is to add parallel terminals. Specifically, by using multiple terminals in parallel, the total current can be dispersed to multiple paths, thereby reducing the current load of a single terminal and reducing heat. However, this design method has obvious limitations. First, adding parallel terminals will take up more space, resulting in a more crowded internal structure of the connector, especially in high-density application scenarios, where space resources are limited. This design will further limit the realization of other functions. Secondly, the increase in parallel terminals will also bring additional complexity and cost, including more manufacturing processes, higher material consumption, and more complex assembly processes. Summary of the invention

[0004] In view of the above, it is necessary to provide a power connector and a power socket thereof, which can form more current channels in a limited space to reduce the heat generation problem when increasing the current, while reducing the structural complexity and cost problems caused by excessive terminal stacking.

[0005] A first aspect of the present application provides a power connector, comprising an insulating body and two power terminals, the insulating body being provided with a docking groove and two fixing grooves located at the rear of both sides of the docking groove, the two power terminals being fixed in the corresponding fixing grooves and extending out of the fixing grooves, each power terminal comprising a fixing portion fixed in the fixing groove and a plurality of elastic arms extending forward from the fixing portion, the plurality of elastic arms being provided with contact portions protruding into the docking groove, the power terminal comprising a reinforcement plate, the reinforcement plate being fixed between the inner surface of the fixing portion and the inner wall surface of the fixing groove, and the reinforcement plate further extending a plurality of additional elastic arms, the additional elastic arms being provided with additional contact portions protruding into the docking groove.

[0006] Preferably, at least one abutting piece is punched out of the fixing portion, and the abutting piece extends obliquely backward to abut against the insulating body.

[0007] Preferably, a preset gap is provided between the reinforcing plate and the fixing portion.

[0008] Preferably, a power cable or a power conductive plate is connected to the rear end of the power terminal, and no conductive element is connected to the rear end of the reinforcement plate.

[0009] Preferably, the power terminal includes a first terminal piece, the first terminal piece includes a plurality of first elastic arms and a second elastic arm, the first elastic arms and the second elastic arms are alternately arranged with each other in the inner and outer directions and the first elastic arms are closer to the docking groove than the second elastic arms, and the additional elastic arm is located in the gap between adjacent second elastic arms.

[0010] Preferably, the power terminal includes a second terminal piece stacked on the outside of the first terminal piece, the second terminal piece includes a plurality of third elastic arms and a fourth elastic arm, the third elastic arms and the fourth elastic arms are alternately arranged with each other in the inward and outward directions and the third elastic arm is closer to the docking groove than the fourth elastic arm, and the second elastic arm is located in the gap between adjacent fourth elastic arms.

[0011] Preferably, no other elastic arm can be arranged between the first elastic arm and the second elastic arm, and no other elastic arm can be arranged between the third elastic arm and the fourth elastic arm.

[0012] The second aspect of the present application provides a power socket for plugging with a power connector of any embodiment of the first aspect of the present application. The power socket is longitudinally arranged in a direction perpendicular to the plugging direction. The power socket includes a fixing part, a first insulating part and two conductive copper bars. The two copper bars are respectively buried on opposite sides of the first insulating part. The first insulating part is fixed to the fixing part. When the power socket is connected to the power connector, the copper bars are connected to the contact part and the additional contact part.

[0013] Preferably, the fixing piece is a copper profile, the cross section of the fixing piece in the plugging direction is "U"-shaped, and copper blocks are arranged on the inner sides of the two ends of the fixing piece.

[0014] Preferably, the power socket further comprises a second insulating member, the copper bar is fixed to the fixing member by means of screws, and the second insulating member is sleeved on the screws to isolate the copper bar from the screws.

[0015] In the power connector and its power socket of the present application, the two power terminals extend in the plugging direction of the power connector and the power socket through a reinforcement plate to form contacts, which can not only form more current channels in a limited space to reduce the heat problem when increasing the current, but also reduce the structural complexity and cost problems caused by excessive terminal stacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the power connector of an embodiment of the present application being plugged into a power socket.

[0017] Figure 2It is a three-dimensional diagram of a power connector according to an embodiment of the present application.

[0018] Figure 3 This application Figure 2 A cross-sectional view of a power connector according to an embodiment.

[0019] Figure 4 It is a schematic diagram of the structure of the insulating body in the power connector of an embodiment of the present application.

[0020] Figure 5 It is a schematic diagram of the structure of the first terminal piece in the positive electrode (or negative electrode) of the power connector of an embodiment of the present application.

[0021] Figure 6 It is a schematic diagram of the structure of the second terminal piece in the positive electrode (or negative electrode) of the power connector of an embodiment of the present application.

[0022] Figure 7 It is a schematic diagram of the structure of the reinforcement plate in the positive electrode (or negative electrode) of the power connector of an embodiment of the present application.

[0023] Figure 8 It is a schematic diagram of the assembly of the reinforcement plate and the copper nail in the positive electrode (or negative electrode) of the power connector of the embodiment of the present application.

[0024] Fig. 9 It is a schematic diagram of the assembly of the first terminal piece, the second terminal piece and the reinforcement plate in the positive electrode (or negative electrode) of the power connector of an embodiment of the present application.

[0025] Fig.10 Schematic diagram of the structure of the elastic grounding member in the power connector of the embodiment of the present application.

[0026] Fig.11 It is a structural schematic diagram of the power socket of an embodiment of the present application from a first perspective.

[0027] Fig.12 It is a structural schematic diagram of the power socket from a second perspective of an embodiment of the present application.

[0028] Fig.13 It is a cross-sectional view of a partial structure of the power socket of an embodiment of the present application.

[0029] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0030] In the description of the embodiments of the present application, words such as "exemplary", "or", "for example" and the like are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "or", "for example" and the like is intended to present related concepts in a concrete manner.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field in this application. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. It should be understood that, unless otherwise specified in this application, " / " means or. For example, A / B can represent A or B. "And / or" in this application is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. "At least one" means one or more. "Multiple" means two or more than two. For example, at least one of a, b or c can represent: a, b, c, a and b, a and c, b and c, a, b and c seven situations.

[0032] It should also be noted that the terms "first" and "second" in the specification, claims and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. The method disclosed in the embodiments of this application or the method shown in the flowchart includes one or more steps for implementing the method. Without departing from the scope of the claims, the execution order of multiple steps can be interchanged with each other, and some steps can also be deleted.

[0033] In the design and application of high-current power connectors, improving the current capacity to meet the needs of different scenarios is a key challenge. Especially in modern power electronic systems, high-current power connectors are the core components of energy transmission, and their performance directly affects the reliability and safety of the entire system. With the continuous improvement of the power density of electronic equipment, the current that power connectors need to carry is also increasing. For example, with the continuous increase in power density requirements in application scenarios such as new energy vehicles, industrial automation equipment and data centers, the current carrying capacity requirements of connectors have rapidly increased from the traditional 100A level to 500A or even higher. However, the increase in current will inevitably cause more heat to be generated inside the connector, which will in turn cause a series of problems, such as excessive temperature rise, material aging, increased contact resistance, and even potential safety hazards. Therefore, how to effectively increase the current capacity and control heat in a limited space has become a core issue in connector design.

[0034] In traditional methods, a common solution is to increase parallel terminals. Specifically, by using multiple terminals in parallel, the total current can be dispersed to multiple paths, and theoretically the current density of a single contact can be reduced. The physical basis of this method is the current shunt principle of parallel circuits. When n contacts with the same resistance are connected in parallel, the total resistance can be reduced to 1 / n of a single contact, thereby reducing the current load of a single terminal and reducing heat generation.

[0035] However, this design method has obvious limitations. First, adding parallel terminals will take up more space, making the internal structure of the connector more crowded, especially in high-density application scenarios, where space resources are limited. This design will further limit the realization of other functions. Specifically, each additional parallel terminal inside the connector requires additional axial length and radial space, which not only compresses the effective thickness of the insulating medium, but also causes distortion of the electromagnetic field distribution. In typical industrial connectors, the terminal spacing often needs to maintain a safety distance of 3-5mm to prevent arc discharge. When the number of parallel connections exceeds 4 groups, the connector volume will expand by more than 40%. Secondly, the increase in parallel terminals will also bring additional complexity and cost, including more manufacturing processes, higher material consumption, and more complex assembly processes.

[0036] To this end, the embodiments of the present application provide a power connector and a power socket thereof, which can form more current channels in a limited space to reduce the heat generation problem when the current is increased, and at the same time reduce the structural complexity and cost problems caused by excessive terminal stacking. Some embodiments will be described below in conjunction with the accompanying drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0037] See also Figure 1 The embodiment of the present application may provide a power connector 1 and a matching power socket 100 .

[0038] See also Figure 2 The embodiment of the present application first provides a power connector 1. Figure 2 and Figure 3In the first aspect of the present application, a power connector 1 is provided, comprising an insulating body 11 and two power terminals (specifically, a positive terminal 12 and a negative terminal 13, respectively, as described below). The insulating body 11 is provided with a docking groove and two fixing grooves located at the rear of both sides of the docking groove. The two power terminals are fixed in the corresponding fixing grooves and extend out of the fixing grooves, each power terminal comprises a fixing portion fixed in the fixing groove (e.g., a fixing portion 1211 described below) and a plurality of elastic arms extending forward from the fixing portion (e.g., a first elastic arm 1212 described below), the plurality of elastic arms are provided with a contact portion protruding into the docking groove (e.g., a contact portion 1214 described below), the positive terminal 12 comprises a reinforcing plate 14 (the negative terminal 13 is a reinforcing plate 15), the reinforcing plate 14 is fixed between the inner surface of the fixing portion and the inner wall surface of the fixing groove, and the reinforcing plate 14 further extends a plurality of additional elastic arms 141, the additional elastic arms 141 are provided with an additional contact portion 142 protruding into the docking groove.

[0039] The positive terminal 12, the negative terminal 13, the reinforcing plate 14 and the reinforcing plate 15 are all conductors. The power connector 1 of the embodiment of the present application uses the original reinforcing plate 14 for fixing the positive terminal 12 and the reinforcing plate 15 for fixing the negative terminal 13 to assist the positive terminal 12 and the negative terminal 13 in conducting and shunting, so as to reduce the current load of the positive terminal 12 and the negative terminal 13 and reduce heat generation. That is, by integrating the positive terminal 12, the negative terminal 13, the reinforcing plate 14 and the reinforcing plate 15, no new conductor terminal is added in the original limited space, and the current size can be increased while reducing the heat generation problem.

[0040] See also Figure 4 , the insulating body 11 may include a first inner side wall 1131 and a second inner side wall 1132 opposite to each other. The first inner side wall 1131 has a docking groove and a fixing groove (not shown) adapted to the positive terminal 12, and the second inner side wall 1132 also has a docking groove and a fixing groove (not shown) adapted to the negative terminal 13. In this case, the positive terminal 12 can be fixed to the first inner side wall 1131 by the reinforcing plate 14, and the positive terminal 12 is located in the docking groove and the fixing groove of the first inner side wall 1131, and the negative terminal 13 can be fixed to the second inner side wall 1132 by the reinforcing plate 15, and the negative terminal 13 is located in the docking groove and the fixing groove of the second inner side wall 1132.

[0041] In some embodiments, along the plugging direction D1 , the insulating body 11 may be divided into a front end 111 and a rear end 113 , the first inner sidewall 1131 and the second inner sidewall 1132 may be located at the rear end 113 , and the front section of the insulating body 11 may be in a rectangular frame shape.

[0042] In some embodiments, along the plugging direction D1 , the end of the insulating body 11 (ie, the end of the rear end 113 ) may be arranged as a pointed guide, thereby facilitating the power connector 1 to be plugged into the power socket 100 quickly and accurately.

[0043] In some embodiments, a barrier portion 112 may protrude between the front end 111 and the rear end 113 of the insulating body 11, and the barrier portion 112 may play a certain insertion limiting role when the power connector 1 and the power socket 100 are plugged in, thereby reducing the problem of damage to the power connector 1 or the power socket 100 caused by excessive plugging.

[0044] Also, see Figure 3 and Figure 5 The positive terminal 12 includes a first terminal piece 121 (the negative terminal 13 includes a first terminal piece 131), the first terminal piece 121 includes a plurality of first elastic arms 1212 (the negative terminal 13 includes a first elastic arm 1312) and a second elastic arm 1213 (the negative terminal 13 includes a second elastic arm 1313), the first elastic arms 1212 and the second elastic arms 1213 are alternately arranged in the inner and outer directions, and the first elastic arms 1212 are closer to the docking groove than the second elastic arms 1213. Please refer to Fig. 9 , the additional elastic arm 141 is located in the gap between adjacent second elastic arms 1213 .

[0045] Also, see Figure 3 and Figure 6 The positive terminal 12 includes a second terminal piece 122 stacked on the outside of the first terminal 121 (the negative terminal 13 is the second terminal piece 132), the second terminal piece 122 includes a plurality of third elastic arms 1222 (the negative terminal 13 is the third elastic arm 1322) and a fourth elastic arm 1223 (the negative terminal 13 is the fourth elastic arm 1323), the third elastic arms 1222 and the fourth elastic arms 1223 are alternately arranged in the inner and outer directions and the third elastic arms 1222 are closer to the docking groove than the fourth elastic arms 1223, and the second elastic arms 1213 are located in the gap between adjacent fourth elastic arms 1223.

[0046] In addition, preferably, there is no gap between the first elastic arm 1212 and the second elastic arm 1213 or the gap is so small that other elastic arms cannot be set, and there is no gap between the third elastic arm 1222 and the fourth elastic arm 1223 or the gap is so small that other elastic arms cannot be set.

[0047] As described above, the elastic arm is provided with a contact portion protruding into the docking groove, wherein, in the positive terminal 12, the first elastic arm 1212 is provided with a contact portion 1214, the second elastic arm 1213 is provided with a contact portion 1215, the third elastic arm 1222 is provided with a contact portion 1224, and the fourth elastic arm 1223 is provided with a contact portion 1225. In the negative terminal 13, the first elastic arm 1312 is provided with a contact portion 1314, the second elastic arm 1313 is provided with a contact portion 1315, the third elastic arm 1322 is provided with a contact portion 1324, and the fourth elastic arm 1323 is provided with a contact portion 1325. In this case, a plurality of contact portions can form parallel contact points, and when transmitting current, current can be shunted, thereby reducing the load of a single contact point, thereby reducing the local temperature rise. In addition, when the multiple contact parts contact the conductor of the power socket 100, they can destroy the oxide layer on themselves and / or the conductor of the power socket 100 by concentrated pressure, thereby reducing the contact resistance. At the same time, the multiple contact parts can adapt to small displacements, maintain constant pressure, and inhibit the regeneration of the oxide layer.

[0048] Also, see Figure 5 , at least one abutting piece is punched out of the fixed part of the positive terminal 12, and the abutting piece extends backwards obliquely to abut against the insulating body 11. Among them, in the positive terminal 12, the first terminal piece 121 is correspondingly punched out with abutting piece 1216, and the second terminal piece 122 is correspondingly punched out with abutting piece 1226. Similarly, at least one abutting piece is punched out of the fixed part of the negative terminal 13, and the abutting piece extends backwards obliquely to abut against the insulating body 11. Among them, in the negative terminal 13, the first terminal piece 131 is correspondingly punched out with abutting piece 1316, and the second terminal piece 132 is correspondingly punched out with abutting piece 1326.

[0049] In addition, a plurality of contact bumps 1217 (the negative terminal 13 has contact bumps 1317) may be formed on one side where the first terminal piece 121 contacts the second terminal piece 122. Similarly, in this case, the oxide layer can be broken down by high pressure and multiple paths can be parallel-connected and shunted by multiple contacts, thereby reducing the contact resistance to a few tenths of that of surface contact or even lower, and at the same time improving the reliability and heat dissipation capability of the first terminal piece 121 and the second terminal piece 122 (or the first terminal piece 131 and the second terminal piece 132).

[0050] Also, see Figure 3 A preset gap is provided between the reinforcing plate 14 and the fixing portion 1211 (or between the reinforcing plate 15 and the fixing portion 1311) to improve the reliability of the power connector. Improving reliability may include compensating for thermal expansion and mechanical deformation, reducing micro-motion wear, optimizing contact pressure distribution, and improving assembly tolerance.

[0051] See also Figure 8In some embodiments, the reinforcing plate 14 can fix the positive terminal 12 to the first inner side wall 1131 by means of a copper nail 16. Similarly, in some embodiments, the reinforcing plate 15 can fix the negative terminal 13 to the second inner side wall 1132 by means of a negative copper nail 17. Moreover, the area of ​​the portion where the copper nail 16 contacts the reinforcing plate 14 is larger than the area where the copper nail 16 contacts the positive terminal 12, and the area of ​​the portion where the negative copper nail 17 contacts the reinforcing plate 15 is larger than the area where the negative copper nail 17 contacts the negative terminal 13. In this case, the copper nail 16 can reduce the contact resistance when the three are in contact while connecting the reinforcing plate 14 and the positive terminal 12, and the negative copper nail 17 can reduce the contact resistance when the three are in contact while connecting the reinforcing plate 15 and the negative terminal 13.

[0052] In addition, preferably, the rear end of the power terminal is connected to a power cable 19 or a power conductive plate, and the rear end of the reinforcement plate is not connected to a conductive element. Figure 3 The power cable 19 can be connected to the positive terminal 12 and the negative terminal 13 to transmit current, and the power cable 19 can be arranged at the front end 111 of the insulating body 11 in a rectangular frame shape. There can be multiple power cables 19, for example, the power cable 19 connected to the positive terminal 12 can include an input line, a 200 ampere input line, a 250 ampere input line, and a 300 ampere input line, and the power cable 19 connected to the negative terminal 13 can include an output line, a 200 ampere output line, a 250 ampere output line, and a 300 ampere output line.

[0053] Also, see Figure 3 and Fig.10 , a plurality of elastic grounding members 18 are disposed on the outer side of the insulating body 11, and the elastic grounding members 18 extend along the plug-in direction D1 and are bent toward the insulating body 11. The outer side of the insulating body 11 may have a docking groove and a fixing groove adapted to the elastic grounding member 18. The elastic grounding member 18 may be assembled and secured through the docking groove and the fixing groove on the outer side of the insulating body 11, and at the same time, the bent portion exerts a reaction force on the power socket 100 when the power connector 1 is plugged into the power socket 100 to enhance the contact strength between the positive terminal 12, the negative terminal 13 of the power connector 1 and the conductor of the power socket 100.

[0054] In the embodiment of the present application, the positive terminal 12 and the negative terminal 13 are symmetrically arranged, and the reinforcing plate 14 and the reinforcing plate 15 are symmetrically arranged. That is, the shape and size of the positive terminal 12 and the negative terminal 13 can be the same or similar, but the arrangement direction is opposite, and the shape and size of the reinforcing plate 14 and the reinforcing plate 15 can also be the same or similar, but the arrangement direction is opposite. Therefore, the embodiments of the negative terminal 13 and the reinforcing plate 15 can refer to the contents of the embodiments of the positive terminal 12 and the reinforcing plate 14, and will not be repeated here.

[0055] See also Fig.11 The second aspect of the present application provides a power socket 100 for plugging with the power connector 1 of any embodiment of the first aspect of the present application. The power socket 100 is longitudinally arranged in a direction perpendicular to the plugging direction.

[0056] See also Fig.12 The power socket 100 includes a fixing member 103, a first insulating member 104 and two conductive copper bars (copper bar 101 for the positive pole and copper bar 102 for the negative pole), the two copper bars are respectively buried on opposite sides of the first insulating member 104, the first insulating member 104 is fixed to the fixing member 103, and when the power socket 100 is connected to the power connector 1, the copper bars are connected to the contact portion and the additional contact portion. In this case, the longitudinal or fin-shaped setting can form two parallel contact surfaces, thereby increasing the effective contact area with the positive terminal 12 and the negative terminal 13 of the power connector 1, thereby reducing the contact resistance; at the same time, the power connector 1 of the above embodiment is allowed to slide in the lateral direction, thereby compensating for the assembly tolerance and thermal expansion difference; in addition, during the plugging and unplugging process of the power connector 1 and the power socket 100, the sliding friction can remove the oxide layer (the contact resistance fluctuation can be controlled within a preset range, such as ±5%); in addition, the longitudinal or fin-shaped setting is easier to dissipate heat naturally.

[0057] In addition, the fixing member 103 is a copper profile, and the cross section of the fixing member 103 in the plugging direction is "U"-shaped, and copper blocks 1031 are arranged on the inner sides of the two ends of the fixing member 103. Therefore, the heat dissipation efficiency can be improved by the copper material.

[0058] In addition, along the plugging direction D1, the end of the first insulating member 104 close to the power connector 1 is provided with a pointed tip, so that the positive copper bar 101 and the negative copper bar 102 can be insulated and isolated, and the pointed tip can facilitate the plugging of the power connector 1 of the above embodiment.

[0059] Also, see Fig.13 The power socket 100 further includes a second insulating member 105, the copper bar is fixed to the fixing member by means of a screw 106, and the second insulating member 105 is sleeved on the screw 106 to isolate the copper bar from the screw 106. Thus, the copper fixing member 103 can conveniently dissipate heat without affecting the current transmission of the positive copper bar 101 and the negative copper bar 102.

[0060] Also, please refer to Fig.11 The power socket 100 also includes a connector 107, which is a copper profile and is used to connect the copper busbar.

[0061] In summary, in the power connector 1 and its power socket 100 of the present application, the two power terminals extend in the plug-in direction D1 of the power connector 1 and the power socket 100 through the reinforcement plate 14 and the reinforcement plate 15 to form contacts, and the extension parts of the reinforcement plate 14 and the reinforcement plate 15 are correspondingly located in the gap formed by the elastic arms of the positive terminal 12 or the negative terminal 13, so that the reinforcement plate 14 and the reinforcement plate 15 can form a current-carrying channel, which can form more current channels in a limited space to reduce the heat problem when increasing the current, and at the same time reduce the structural complexity and cost problems caused by excessive terminal stacking.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A power connector, comprising an insulating body and two power terminals, wherein the insulating body is provided with a mating groove and two fixing grooves located at both sides and rear of the mating groove, the two power terminals are fixed in the corresponding fixing grooves and extend out of the fixing grooves, each of the power terminals comprises a fixing portion fixed in the fixing groove and a plurality of elastic arms extending forward from the fixing portion, the plurality of elastic arms are provided with contact portions protruding into the mating groove, characterized in that: The power terminal includes a reinforcing plate, which is fixed between the inner surface of the fixing portion and the inner wall surface of the fixing groove, and the reinforcing plate further extends a plurality of additional elastic arms, and the additional elastic arms are provided with additional contact portions protruding into the docking groove.

2. The power connector according to claim 1, characterized in that: At least one abutting piece is punched out of the fixing portion, and the abutting piece extends obliquely backward to abut against the insulating body.

3. The power connector according to claim 1, characterized in that: A preset gap is provided between the reinforcing plate and the fixing portion.

4. The power connector according to claim 1, characterized in that: The rear end of the power terminal is connected to a power cable or a power conductive plate, and the rear end of the reinforcement plate is not connected to a conductive element.

5. The power connector according to claim 1, characterized in that: The power terminal includes a first terminal piece, the first terminal piece includes a plurality of first elastic arms and a second elastic arm, the first elastic arms and the second elastic arms are alternately arranged in the inner and outer directions and the first elastic arm is closer to the docking groove than the second elastic arm, and the additional elastic arm is located in the gap between adjacent second elastic arms.

6. The power connector according to claim 5, characterized in that: The power terminal includes a second terminal piece stacked on the outside of the first terminal piece, the second terminal piece includes a plurality of third elastic arms and a fourth elastic arm, the third elastic arms and the fourth elastic arms are alternately arranged with each other in the inner and outer directions and the third elastic arms are closer to the docking groove than the fourth elastic arms, and the second elastic arm is located in the gap between adjacent fourth elastic arms.

7. The power connector according to claim 6, characterized in that: No other elastic arm can be arranged between the first elastic arm and the second elastic arm, and no other elastic arm can be arranged between the third elastic arm and the fourth elastic arm.

8. A power socket, used for plugging with the power connector according to any one of claims 1 to 7, characterized in that: The power socket is arranged in a longitudinal direction perpendicular to the plug-in direction, and comprises a fixing part, a first insulating part and two conductive copper bars, the two copper bars are respectively buried on opposite sides of the first insulating part, the first insulating part is fixed to the fixing part, and when the power socket is connected to the power connector, the copper bars are connected to the contact part and the additional contact part.

9. The power socket according to claim 8, characterized in that: The fixing piece is a copper profile, and the cross section of the fixing piece in the plugging direction is "U"-shaped. Copper blocks are arranged on the inner sides of the two ends of the fixing piece.

10. The power socket according to claim 8, characterized in that: The power socket also includes a second insulating member, the copper bar is fixed to the fixing member by means of screws, and the second insulating member is sleeved on the screws to isolate the copper bar from the screws.

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