High-power direct-current charging connector group and charging socket thereof

Abstract

The utility model provides a high power direct current charging connector group and a charging socket thereof, a charging socket and a plug connector of the electric connector group for charging are respectively provided with two power supply electrode plate pairs, and the power supply electrode plate pairs respectively arranged at the upper row and the lower row only comprise a single positive plate and a single negative plate. The single positive plates and the single negative plates in the lower row and the single positive plates and the single negative plates in the upper row are arranged in an up-and-down staggered manner so as to meet positive and negative plugging charging; and at least one electrode plate of the charging socket forms a concave-convex part, so that the contact part of the corresponding electrode plate of the plug connector is arranged on the concave-convex part and is in contact with the concave-convex part, and compared with plane contact, the electrode plate with the concave-convex part of the charging socket can reduce the external pulling force of the electrode plate of the plug connector, so that the plug connector is prevented from falling off after being plugged.

Description

Technical Field

[0001] The utility model relates to a charging connector, in particular to a high-power direct current charging connector group and a charging socket thereof. Background Art

[0002] In response to the trend of electronic products becoming thinner and lighter, the size of the DC charging connectors used in conjunction with them has also been reduced accordingly. However, due to the high frequency of use and high power consumption of electronic products, a larger charging power is required to meet the demand for fast charging.

[0003] Therefore, as shown in the table below, the current withstand specification of the miniaturized USB DC charging connector shows that for the design of the USB TYPE-C connector (USB PD), the current withstand specification is only up to 5A (ampere), which needs to be further improved.

[0004]

[0005] Furthermore, if the miniaturized USB DC charging connector is not properly plugged in, the plug connector is easily touched and falls off from the socket connector, so it is necessary to further improve it. Utility Model Content

[0006] The maximum current carrying capacity of the current miniaturized DC charging connector is still low, which cannot meet the high-power fast charging requirements, and the stability of plug-in use needs to be enhanced. The utility model proposes a high-power DC charging connector set and a charging socket thereof.

[0007] To achieve the above-mentioned purpose, the high-power DC charging connector set provided by the utility model comprises:

[0008] A charging socket, comprising:

[0009] a first housing; and

[0010] A terminal block is disposed on the first housing and comprises:

[0011] An insulating tongue, comprising two opposite upper and lower surfaces; and

[0012] Four electrode plates, wherein two electrode plates are arranged side by side on the upper surface of the insulating tongue piece, and the other two electrode plates are arranged on the lower surface of the insulating tongue piece; wherein the two electrode plates located on the upper surface are electrically connected to a positive potential and a negative potential respectively along a width direction, and the two electrode plates located on the lower surface are electrically connected to a negative potential and a positive potential respectively along the same width direction, and at least one electrode plate of the four electrode plates forms a concave-convex portion; and

[0013] A plug connector comprising:

[0014] a housing; and

[0015] An elastic terminal seat is arranged in the housing and comprises:

[0016] A socket body having a front slot, an upper slot wall, a lower slot wall and two opposite side slot walls; wherein the front slot matches the insulating tongue; and

[0017] Four electrode elastic plates, wherein two electrode elastic plates are arranged side by side on the upper slot wall of the socket body, and the other two electrode elastic plates are arranged on the lower slot wall of the socket body; wherein the two electrode elastic plates located on the upper slot wall are electrically connected to a positive potential and a negative potential respectively along a width direction, and the two electrode plates located on the lower slot wall are electrically connected to a negative potential and a positive potential respectively along the same width direction;

[0018] When the plug connector is plugged into the charging socket, a contact portion of the electrode elastic plate corresponding to the at least one electrode plate having the concave-convex portion is located at the corresponding concave-convex portion and contacts the concave-convex portion.

[0019] From the above description, it can be known that the high-power DC charging connector set of the utility model makes its charging socket include four electrode plates, and they are arranged in twos up and down, and the polarity of the power source electrically connected to the two electrode plates in the upper and lower rows is staggered; similarly, the four electrode elastic plates of the plug connector are also arranged in twos up and down, and the polarity of the power source electrically connected to the two electrode plates in the upper and lower rows is staggered, so as to meet the plug connector can be plugged into the charging socket for charging in the forward and reverse directions; in addition, since the charging socket only includes four electrode plates and the plug connector only includes four electrode elastic plates, the width of each electrode plate or each electrode elastic plate can be increased as much as possible within the connector size standard specification, so that the current resistance value can be effectively improved to achieve the purpose of high-power charging. In addition, at least one electrode plate of the charging socket forms a concave-convex portion for contact with one of the contact portions of the corresponding electrode elastic plate of the plug connector. Compared with the plane contact, the electrode plate of the charging socket with the concave-convex portion can reduce the force of the electrode plate of the plug connector being pulled outward, and prevent the plug connector from falling off after being plugged in.

[0020] To achieve the above-mentioned purpose, the charging socket of the high-power DC charging connector group provided by the utility model comprises:

[0021] a first housing;

[0022] A terminal block is disposed on the first housing and comprises:

[0023] An insulating tongue, comprising two opposite upper and lower surfaces; and

[0024] Four electrode plates, two of which are arranged side by side on the upper surface of the insulating tongue, and the other two electrode plates are arranged on the lower surface of the insulating tongue; the two electrode plates located on the upper surface are electrically connected to the positive potential and the negative potential respectively along the width direction, and the two electrode plates located on the lower surface are electrically connected to the negative potential and the positive potential respectively along the same width direction, and at least one of the four electrode plates forms a concave-convex portion.

[0025] As can be seen from the above description, the charging socket of the high-power DC charging connector set of the utility model includes four electrode plates, which are arranged two by two in an upper and lower arrangement. The polarity of the power source electrically connected to the two electrode plates in the upper and lower rows is staggered, so that a plug connector can be charged by plugging the plug connector forward or backward. Since the charging socket only includes four electrode plates and the plug connector only includes four electrode elastic plates, the width of each electrode plate or each electrode elastic plate can be increased as much as possible within the connector size standard specification, so that the current resistance value can be effectively improved to achieve the purpose of high-power charging. In addition, at least one electrode plate of the charging socket forms a concave-convex portion for contact with a contact portion of the corresponding electrode elastic plate of the plug connector. Compared with flat contact, the electrode plate of the charging socket with a concave-convex portion can reduce the force of the electrode plate of the plug connector being pulled outward, thereby preventing the plug connector from falling off after being plugged in. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional appearance diagram of the terminal seat of the charging socket of the utility model;

[0027] Figure 2 This is a three-dimensional exploded view of the charging socket of the utility model;

[0028] Figure 3 It is a front plan cross-sectional view of the charging socket of the utility model;

[0029] Figure 4 It is a side perspective cross-sectional view of the charging socket of the utility model;

[0030] Figure 5 A side plan cross-sectional view of the utility model of the charging electrical connector assembly when plugged in;

[0031] Figure 6 It is a front plan view of another embodiment of the charging socket of the utility model;

[0032] Figure 7 It is a front plan cross-sectional view of another embodiment of the charging socket of the utility model;

[0033] Figure 8 This is a three-dimensional exploded view of one of the plug connectors of the utility model;

[0034] Fig. 9It is a combined three-dimensional cross-sectional view of one of the plug connectors of the utility model;

[0035] Fig.10 Another side planar cross-sectional view of the utility model when the charging electrical connector assembly is plugged in;

[0036] Wherein, the reference numerals are:

[0037] 1: Charging socket 10: First housing

[0038] 11: front opening 12: back opening

[0039] 13: Second housing 20: Terminal block

[0040] 21: Insulation seat 211: Base

[0041] 212: tongue 213: upper surface

[0042] 214: lower surface 215: front side

[0043] 216: Outer side 217: Concave and convex area

[0044] 22: first electrode plate pair 221: electrode plate

[0045] 222: electrode plate 223: first signal terminal

[0046] 224: concave-convex portion 23: second electrode plate pair

[0047] 231: Electrode plate 232: Electrode plate

[0048] 233: Second signal terminal 30, 30a, 30b: Hard wall

[0049] 300:Metal plate 301:Metal plate

[0050] 31: Front upright part 311: Fastening part

[0051] 312: opening 32: side stand

[0052] 321: height difference part 33: side part

[0053] 331: High and low section 332: Concave section

[0054] 34: side wing 50: plug connector

[0055] 51: Locking member 511: Fastening part

[0056] 60: Elastic terminal seat 61: Socket body

[0057] 611: front notch 612: rear notch

[0058] 613: Upper tank wall 614: Lower tank wall

[0059] 615: side groove wall 62: insulation block

[0060] 63: positive electrode elastic plate 631: electrode elastic plate

[0061] 632: electrode elastic plate 633: first ring portion

[0062] 634: first pad 64: negative electrode elastic plate

[0063] 641: Electrode elastic plate 6411: Contact part

[0064] 642: electrode elastic plate 643: second ring portion

[0065] 644: second pad 65: signal elastic terminal

[0066] 651: first signal elastic terminal 652: second signal elastic terminal

[0067] 653: welding pad 70: shell

[0068] 71: front opening 72: rear opening DETAILED DESCRIPTION

[0069] The utility model is aimed at improving the charging socket of the charging electrical connector assembly, and the technical contents are explained in detail with several embodiments and drawings.

[0070] First see Figure 5 As shown, the charging electrical connector assembly of the present invention comprises a charging socket 1 and a plug connector 50 , and the plug connector 50 is plugged into the charging socket 1 .

[0071] For example Figure 1 and Figure 2 As shown, the charging socket 1 includes a first housing 10 , a terminal seat 20 and a rigid vertical wall 30 .

[0072] The first housing 10 has a front opening 11 and a rear opening 12 . In one embodiment, a second housing 13 may be further sleeved outside the first housing 10 .

[0073] The terminal base 20 includes an insulating base 21 and a terminal set. The insulating base 21 has a base 211 and a tongue 212. Figure 4As shown, the base 211 is located near the rear opening 12 of the first housing 10, and the tongue 212 extends transversely from the base 211 toward the front opening 11 of the first housing 10, and has an upper surface 213, a lower surface 214, two opposite outer sides 216 and a front side 215. The terminal set includes four electrode plates 221, 222, 231, 232, and may further include a first signal terminal 223, or further include a second signal terminal 233. Two of the four electrode plates 221, 222 constitute a first electrode plate pair 22, and are arranged side by side on the upper surface 213 of the tongue 212, and the first signal terminal 223 is also arranged on the upper surface 213 of the tongue 212, and is located between the two electrode plates 221, 222. The other two electrode plates 231 , 232 of the four electrode plates constitute a second electrode plate pair 23 and are arranged side by side on the lower surface 214 of the tongue 212 . The second signal terminal 233 is also arranged on the lower surface 214 of the tongue 212 and located between the two electrode plates 231 , 232 .

[0074] In this embodiment, the two electrode plates 221 and 222 arranged on the upper surface 213 of the tongue 212 along the width direction X are electrically connected to the positive potential and the negative potential, respectively, and the two electrode plates 231 and 232 arranged on the lower surface 214 of the tongue 212 along the same width direction X are electrically connected to the negative potential and the positive potential, respectively; therefore, the electrode plate 231 located on the lower surface 214 and electrically connected to the positive potential corresponds to the electrode plate 222 electrically connected to the negative potential above, and the other electrode plate 232 located on the lower surface 214 and electrically connected to the negative potential corresponds to the electrode plate 221 electrically connected to the positive potential above. Therefore, in addition to the two electrode plates 221, 222 / 231, 232 respectively arranged on the upper and lower surfaces 213, 214 of the insulating tongue 212 of the charging socket 1, only a first signal terminal 223 and a second signal terminal 233 can be added therebetween; in addition, no other terminals are arranged on the upper and lower surfaces 213, 214, so the width of each of the electrode plates 221, 222, 231, 232 is increased as much as possible within the connector size standard specification, and is much larger than the width of each of the first signal terminal 223 and the second signal terminal 233.

[0075] At least one of the electrode plates 221, 222, 231, 232 of the charging socket 1 forms a concave-convex portion 224, and all the electrode plates may also form a concave-convex portion 224. In this embodiment, a concave-convex portion 224 is formed at the middle front portion of the electrode plate 222, and a concave-convex area 217 is formed on the upper surface 213 of the tongue piece 212 corresponding to the concave-convex portion 224, so that the concave-convex portion 224 is matched and disposed in the concave-convex portion 224.

[0076] The rigid vertical wall 30 matches the tongue 212 of the insulating seat 21 and is harder than the tongue 212. It is embedded or partially embedded in the two opposite outer sides 216 and the front side 215 of the tongue 212. Therefore, the rigid vertical wall 30 includes two opposite side parts 32 and 33 and a front part 31 between the two opposite side parts 32 and 33. In one embodiment, the rigid vertical wall 30 is formed by bending a metal plate. However, in order to make the metal plate easy to be completely combined with the tongue in the plastic molding process, at least two metal plates 300 and 301 are prepared. Figure 1 and Figure 2 As shown, from a top view, one metal plate 300 is in a straight line shape, and the other metal plate 301 is bent into an L shape. One end of the straight line metal plate 300 forms a recess 332, and one end of the L-shaped metal plate 301 forms a buckling portion 311 corresponding to the recess 332 to buckle into the recess 332, or can be further laser-fused and joined. The buckling portion or the welded portion is located at one of the side stand portions 33 of the rigid stand 30. Figure 6 As shown, in one embodiment, the buckle portion or the weld of the rigid vertical wall 30a can be located at the front vertical portion 31 of the rigid vertical wall 30a. In addition, in one embodiment, the front vertical portion 31 of the rigid vertical wall 30b can further be formed with an opening 312.

[0077] In addition, the rear ends of the two opposite side standing parts 32 and 33 of the rigid vertical wall 30 penetrate into the base 211, and can further extend a side wing 34 in different directions to be more firmly combined with the insulating base 21. Figure 1 As shown, each of the side portions 32 , 33 forms a height difference portion 321 , 331 corresponding to the upper surface 213 or the lower surface 214 of the tongue piece 212 .

[0078] See also Figure 8 and Fig. 9 As shown, the plug connector 50 of the present invention includes a housing 70 and a resilient terminal seat 60 .

[0079] The housing 70 is a metal housing and includes a front opening 71 and a rear opening 72 .

[0080] The elastic terminal seat 60 is disposed in the housing 70 and includes a socket body 61, an insulating block 62 and an elastic terminal set. The socket body 61 and the insulating block 62, the socket body 61 has a front notch 611, a rear notch 612, an upper notch wall 613, a lower notch wall 614 and two opposite side notch walls 615, the front notch 611 is located at the front opening 71 of the housing 70, the front notch matches the insulating tongue 212, and the insulating block 62 is located at the rear notch 612 of the socket body 61. In one embodiment, the elastic terminal set includes four electrode elastic plates 631, 641, 632, 642, and may further include a first signal elastic terminal 651, or further include a second signal elastic terminal 652. Two of the four electrode elastic plates 631 and 641 are arranged side by side on the upper groove wall 613 of the socket body 61, and the first signal elastic terminal 651 is arranged on the upper groove wall 613 of the socket body 61 and is located between the two electrode elastic plates 631 and 641. Another two of the four electrode elastic plates 632 and 642 are arranged side by side on the lower groove wall 614 of the socket body 61, and the second signal elastic terminal 652 is arranged on the lower groove wall 614 of the socket body 61 and is located between the two electrode elastic plates 632 and 642.

[0081] In this embodiment, Fig. 9 Based on the viewing angle, the two electrode elastic plates 631, 641 arranged side by side on the upper groove wall 613 of the socket body 61 are electrically connected to the negative potential and the positive potential respectively along the width direction X, while the other two electrode elastic plates 632, 642 arranged side by side on the lower groove wall 614 of the socket body 61 are electrically connected to the positive potential and the negative potential respectively along the same width direction X; therefore, in addition to the two electrode elastic plates 631, 641 / 642, 632 respectively arranged on the upper and lower groove walls 613, 614 of the socket body 61 of the plug connector 50, only a first and a second signal elastic terminal 651, 652 can be added therebetween; therefore, the width of each of the electrode elastic plates 631, 641, 642, 632 is increased as much as possible within the connector size standard specification, and is much larger than the width of each of the first and the second signal elastic terminals 651, 652.

[0082] Also see Figure 3 and Fig. 9As shown, the plug connector 50 is to be plugged into the charging socket 1, and its electrode elastic plate 631 corresponds to the electrode plate 221 of the charging socket 1, and is electrically connected to the positive potential, while the electrode elastic plate 641 corresponds to the electrode plate 222 of the charging socket 1, and is electrically connected to the negative potential; and the electrode elastic plate 642 corresponds to the electrode plate 232 of the charging socket 1, and is electrically connected to the negative potential, while the electrode elastic plate 632 corresponds to the electrode plate 231 of the charging socket 1, and is electrically connected to the positive potential; at this time, the first signal elastic terminal 651 contacts the first signal terminal 223. Fig. 9 The plug connector 50 shown is rotated 180 degrees in a clockwise or counterclockwise manner, the electrode elastic plate 632 correspondingly contacts the electrode plate 221 of the charging socket 1, and is electrically connected to the positive potential, the electrode elastic plate 642 correspondingly contacts the electrode plate 222 of the charging socket 1, and is electrically connected to the negative potential; the electrode elastic plate 641 correspondingly contacts the electrode plate 232 of the charging socket 1, and is electrically connected to the negative potential, the electrode elastic plate 631 correspondingly contacts the electrode plate 231 of the charging socket 1, and is electrically connected to the positive potential; at this time, the second signal elastic terminal 652 contacts the first signal terminal 223. Therefore, the plug connector 50 of the utility model can be connected to the socket body 61 in a forward or reverse manner for charging.

[0083] In addition, when the plug connector 50 is plugged into the charging socket 1, the contact portions of each of the electrode elastic plates will be located on the corresponding concave-convex portions 224. In this embodiment, the electrode plate 222 of the charging socket 1 is concavely provided with a concave-convex portion 224. Fig. 9 The contact portion 6411 of the corresponding electrode elastic plate 641 of the plug connector 50 is located on the concave-convex portion 224 and contacts therewith; preferably, the contact portion 6411 of the electrode elastic plate 641 of the at least one electrode plate 222 having the concave-convex portion 224 of the plug connector 50 is located at the lowest position of the corresponding concave-convex portion 224. In this way, compared with the contact on the plane, the external pulling force can be reduced to prevent the plug connector 50 from falling off after being plugged in.

[0084] In this embodiment, the first signal elastic terminal 651 and the second signal elastic terminal 652 are integrally connected backwards and penetrate into the insulating block 62 to form a tuning fork shape, and a welding pad 653 protrudes backwards from the insulating block 62; and the rear end of the electrode elastic plate 631 electrically connected to the positive potential and the rear end of the electrode elastic plate 632 are integrally connected to a first ring portion 633, the first ring portion 633 is arranged in the insulating block 62, and a first welding pad 634 protrudes backwards from the insulating block 62 to form a positive elastic plate 63; and the rear end of the electrode elastic plate 641 electrically connected to the negative potential and the rear end of the electrode elastic plate 642 are integrally connected to a second ring portion 643. The second ring portion 643 is disposed outside the insulating block 62 and is substantially concentrically arranged with the first ring portion 633 on the insulating block 62 . The second ring portion 643 also protrudes a second pad 644 backward from the insulating block 62 to form a negative electrode elastic plate 64 .

[0085] In order to further strengthen the plug connector 50 from being easily disengaged after being inserted into the charging socket 1 of the utility model, the plug connector 50 further includes two locking members 51, which are arranged in the socket body 61 and are respectively close to the two side groove walls 615 of the socket body 61, that is, located on the outer sides of the two electrode elastic plates 631, 641, 642, 632 in the upper and lower rows. Figure 5 As shown, when the plug connector 50 is plugged into the charging socket 1, the two locking members 51 are engaged with the corresponding height difference portions 321, 331 of the two opposite side standing portions 32, 33 of the rigid vertical wall 30 of the charging socket 1. In this embodiment, the locking member 51 of the plug connector 50 is a tuning fork type clip, and the locking member 51 has two upper and lower opposite locking portions 511, so that the upper surface 213 and the lower surface 214 of the tongue piece 212 of each side standing portion 32, 33 are respectively formed with the height difference portions 321, 331, so that the two locking portions 511 of the locking member 51 are engaged therein. In one embodiment, the height difference portions 321 , 331 of the side standing portions 32 , 33 are exposed from the upper surface 213 and the lower surface 214 of the tongue piece 212 , and the front side 215 covers or partially exposes the front standing portion 31 of the rigid vertical wall 30 .

[0086] In summary, the high-power DC charging connector set of the utility model allows its charging socket to include four electrode plates, which are arranged in twos up and down, and the polarities of the power sources electrically connected to the two electrode plates in the upper and lower rows are arranged in an alternating manner; similarly, the four electrode elastic plates of the plug connector are also arranged in twos up and down, and the polarities of the power sources electrically connected to the two electrode plates in the upper and lower rows are arranged in an alternating manner, so as to ensure that the plug connector can be plugged into the charging socket in the forward and reverse directions for charging; in addition, since the charging socket only includes four electrode plates and the plug connector only includes four electrode elastic plates, the width of each electrode plate or each electrode elastic plate can be increased as much as possible within the connector size standard specification, so that the current resistance value can be effectively improved (taking the size specification of the USB TYPE-C connector as an example, the current resistance value of the utility model can be increased to 20A), thereby achieving the purpose of high-power charging. In addition, at least one electrode plate of the charging socket forms a concave-convex portion for contact with a contact portion of a corresponding electrode elastic plate of the plug connector. Compared with a flat contact, the electrode plate of the charging socket with a concave-convex portion can reduce the force of pulling the electrode plate of the plug connector outward, thereby preventing the plug connector from falling off after being plugged in.

[0087] The above description is only an embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above by the embodiment, it is not used to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A high-power DC charging connector assembly, characterized in that: include: A charging socket, comprising: a first housing; and A terminal block is disposed in the first housing and comprises: An insulating tongue, comprising two opposite upper and lower surfaces; and Four electrode plates, wherein two electrode plates are arranged side by side on the upper surface of the insulating tongue piece, and the other two electrode plates are arranged on the lower surface of the insulating tongue piece; wherein the two electrode plates located on the upper surface are electrically connected to a positive potential and a negative potential respectively along a width direction, and the two electrode plates located on the lower surface are electrically connected to a negative potential and a positive potential respectively along the same width direction, and at least one electrode plate of the four electrode plates forms a concave-convex portion; and A plug connector comprising: a housing; and An elastic terminal seat is arranged in the housing and comprises: A socket body having a front slot, an upper slot wall, a lower slot wall and two opposite side slot walls; wherein the front slot matches the insulating tongue; and Four electrode elastic plates, wherein two electrode elastic plates are arranged side by side on the upper groove wall of the socket body, and the other two electrode elastic plates are arranged on the lower groove wall of the socket body; The two electrode elastic plates located on the upper groove wall are respectively electrically connected to a positive potential and a negative potential along the width direction, and the two electrode plates located on the lower groove wall are respectively electrically connected to a negative potential and a positive potential along the same width direction; When the plug connector is plugged into the charging socket, a contact portion of the electrode elastic plate corresponding to the at least one electrode plate having the concave-convex portion is located at the corresponding concave-convex portion and contacts the concave-convex portion.

2. The high-power DC charging connector assembly according to claim 1, characterized in that: The terminal seat of the charging socket further includes a first signal terminal, which is disposed on the upper surface of the insulating tongue and is located between the two electrode plates disposed on the upper surface; and The elastic terminal seat of the plug connector further includes a first signal elastic terminal, which is arranged on the upper groove wall of the socket body and located between the two electrode elastic plates arranged on the upper groove wall to selectively contact the first signal terminal.

3. The high-power DC charging connector assembly according to claim 1, wherein: The terminal seat of the charging socket further comprises: a first signal terminal disposed on the upper surface of the insulating tongue and located between the two electrode plates disposed on the upper surface; and a second signal terminal disposed on the lower surface of the insulating tongue and located between the two electrode plates disposed on the lower surface; and The elastic terminal seat of the plug connector further comprises: a first signal elastic terminal, disposed on the upper slot wall of the socket body, and located between the two electrode elastic plates disposed on the upper slot wall, and selectively contacting the first signal terminal, or selectively contacting the second signal terminal; as well as A second signal elastic terminal is disposed on the lower slot wall of the socket body and is located between the two electrode elastic plates disposed on the lower slot wall, and selectively contacts the first signal terminal or the second signal terminal.

4. The high-power DC charging connector assembly according to any one of claims 1 to 3, characterized in that: The concavo-convex portion is formed at the front position of the electrode plate located on the upper surface and electrically connected to the negative potential, and the contact portion of the electrode elastic plate of the plug connector corresponding to the at least one electrode plate having the concavo-convex portion is at the lowest position of the corresponding concavo-convex portion; and The upper surface of the tongue piece forms a concave-convex area corresponding to the concave-convex portion to match and accommodate the concave-convex portion.

5. The high-power DC charging connector assembly according to claim 4, characterized in that: in: The rear ends of the two electrode elastic plates electrically connected to the positive potential are integrally connected to a first ring portion, and the first ring portion further extends backward to form a first pad; and The rear ends of the two electrode elastic plates electrically connected to the negative potential are integrally connected to a second ring portion, and the second ring portion further extends backward to form a second welding pad.

6. The high-power DC charging connector assembly according to claim 5, characterized in that: The socket body of the elastic terminal seat has a rear notch, and an insulating block is arranged in the rear notch. The first ring portion and the second ring portion are substantially concentrically arranged on the insulating block, and the first soldering pad and the second soldering pad pass through the insulating block.

7. The high-power DC charging connector assembly according to claim 3, characterized in that: The rear ends of the first signal elastic terminal and the second signal elastic terminal are integrally connected to form a tuning fork shape, and a welding pad protrudes backwards.

8. The high-power DC charging connector assembly according to claim 7, characterized in that: The socket body of the elastic terminal seat has a rear notch, and an insulating block is arranged on the rear notch, and the welding pad passes through the insulating block.

9. The high-power DC charging connector assembly according to any one of claims 1 to 3, characterized in that: It further comprises a second shell which is sleeved on the first shell.

10. A charging socket of a high-power DC charging connector assembly, characterized in that: include: a first housing; A terminal block is disposed in the first housing and comprises: An insulating tongue, comprising two opposite upper and lower surfaces; and Four electrode plates, two of which are arranged side by side on the upper surface of the insulating tongue, and the other two electrode plates are arranged on the lower surface of the insulating tongue; wherein the two electrode plates located on the upper surface are electrically connected to a positive potential and a negative potential respectively along the width direction, and the two electrode plates located on the lower surface are electrically connected to a negative potential and a positive potential respectively along the same width direction, and at least one of the four electrode plates forms a concave-convex portion.

11. The charging socket according to claim 10, characterized in that: The terminal seat of the charging socket further includes a first signal terminal, which is arranged on the upper surface of the insulating tongue and located between the two electrode plates arranged on the upper surface.

12. The charging socket according to claim 11, characterized in that: The terminal seat of the charging socket further includes a second signal terminal, which is arranged on the lower surface of the insulating tongue and is located between the two electrode plates arranged on the lower surface.

13. The charging socket according to any one of claims 10 to 12, characterized in that: The concavo-convex portion is formed at a front position of the electrode plate located on the upper surface and electrically connected to a negative potential; and The upper surface of the tongue piece forms a concave-convex area corresponding to the concave-convex portion to match and accommodate the concave-convex portion.

14. The charging socket according to any one of claims 10 to 12, characterized in that: It further comprises a second shell which is sleeved on the first shell.

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