Electric connector combination and energy storage system comprising same

Abstract

The utility model mainly discloses an electric connector combination and an energy storage system comprising the same, the electric connector combination comprises a first electric connector and a second electric connector, the first electric connector is provided with a first electric connection unit and a first annular elastic conductive member, and the second electric connector is provided with a second annular elastic conductive member. The second electric connector is provided with a second electric connection unit and a second annular elastic conductive piece. When the first electric connector is in butt joint with the second electric connector, the first annular elastic conductive piece surrounds and makes contact with the conductive terminal of the second electric connection unit, and the second annular elastic conductive piece surrounds and makes contact with the conductive terminal of the first electric connection unit. In addition, the connector combination further comprises a positioning mechanism which is used for stabilizing the connection between the insulating shell of the first electric connector and the insulating shell of the second electric connector when the first electric connector is in butt joint with the second electric connector.

Description

TECHNICAL FIELD

[0001] The utility model discloses a related technical field of power connector, especially a connector group for connecting multiple energy storage battery modules of an energy storage system. BACKGROUND

[0002] It is known that solar power generation systems, wind power generation systems and hydroelectric power generation systems are the most common renewable energy power generation systems, and these renewable energy power generation systems all have energy storage systems for storing electric energy. On the other hand, power companies usually implement a time-of-use electricity pricing system (i.e., different time intervals are set different electricity pricing rates), thereby guiding users to reduce their electricity consumption in peak time intervals, thereby avoiding electricity overload. Therefore, some users (such as companies or enterprises) will purchase energy storage systems themselves in order to store electric energy in the energy storage system during non-peak time intervals when the electricity pricing rate is relatively cheap, and to use the energy storage system to supply the required power during peak time intervals when the electricity pricing rate is relatively expensive.

[0003] Figure 1 A schematic architecture diagram of a known energy storage system. As shown in Figure 1 The known energy storage system 1a mainly includes a cabinet 11a and multiple energy storage battery modules 12a arranged in the cabinet 11a. It is worth noting that each energy storage battery module 12a has at least a first electrical connector 121a and a second electrical connector 122a, wherein the first electrical connector 121a and the second electrical connector 122a are both male single-core electrical connectors, the first electrical connector 121a serves as a positive input / output interface, and the second electrical connector 122a serves as a negative input / output interface. In this way, a cable 2a can be used to electrically connect the negative input / output interface of the i-th energy storage battery module 12a and the positive input / output interface of the (i+1)-th energy storage battery module 12a, wherein i is a positive integer. As shown in Figure 1 The cable 2a has a third electrical connector 21a and a fourth electrical connector 22a, and the third electrical connector 21a and the fourth electrical connector 22a are both female single-core electrical connectors.

[0004] It is also known that the aforementioned male single-core electrical connector and the female single-core electrical connector are required to have high reliability and high stability to meet the high-voltage / high-current charging / discharging operation of the energy storage battery module 12a. Therefore, when a male single-core electrical connector and a female single-core electrical connector are connected to each other, a connector position assurance (CPA) mechanism and a terminal position assurance (TPA) mechanism must be provided between the two connectors, and the CPA mechanism is also referred to as a two-way lock mechanism in the industry.

[0005] Unfortunately, the TPA and CPA mechanisms of the conventional female single-core electrical connector and the male single-core electrical connector still have some disadvantages and deficiencies. In view of this, the present inventor has made great efforts to research and develop the electrical connector assembly. Invention content

[0006] The main purpose of the present application is to provide an electrical connector assembly applied to an energy storage system including a plurality of energy storage battery modules. In particular, the electrical connector assembly includes a first electrical connector and a second electrical connector, wherein the first electrical connector has a first electrical connection unit and a first annular elastic conductive member, and the second electrical connector has a second electrical connection unit and a second annular elastic conductive member. When the first electrical connector is connected to the second electrical connector, the first annular elastic conductive member surrounds and contacts the conductive terminals of the second electrical connection unit, and the second annular elastic conductive member surrounds and contacts the conductive terminals of the first electrical connection unit. In addition, the connector assembly further includes a positioning mechanism for stabilizing the connection between the insulating housing of the first electrical connector and the insulating housing of the second electrical connector when the first electrical connector is connected to the second electrical connector.

[0007] To achieve the above-mentioned purpose, the present application provides an embodiment of the electrical connector assembly, which includes:

[0008] An electrical connector includes:

[0009] A first cylindrical accommodating body has a first front end opening and a first rear end opening;

[0010] A first electrical connection unit is accommodated in the first cylindrical accommodating body and includes a first cylindrical conductive terminal and a first electrical connection terminal connected to the first cylindrical conductive terminal; wherein the first electrical connection terminal is exposed outside the first rear end opening, the first cylindrical conductive terminal has a second head end opening close to the first front end opening, the first cylindrical conductive terminal also has an inner cavity communicating with the second head end opening, and the wall surface of the inner cavity is provided with a first embedding groove; and

[0011] a first annular elastic conductive member disposed in the first slot; and

[0012] a second electrical connector comprising:

[0013] a second cylindrical accommodating body having a side end opening and a second rear end opening;

[0014] a third cylindrical accommodating body having a third front end opening and a third rear end opening, and the third rear end opening is communicated with the side end opening;

[0015] a second electrical connecting unit comprising a second electrical connecting terminal and a second cylindrical conductive terminal connecting a side edge of the second electrical connecting terminal, wherein the second electrical connecting terminal is accommodated in the second cylindrical accommodating body, the second cylindrical conductive terminal is accommodated in the third cylindrical accommodating body, the second cylindrical conductive terminal has a fourth head end opening close to the third front end opening and a mating slot, the bottom of the mating slot is provided with a latch, and the wall of the mating slot is provided with at least one second slot; and at least one second annular elastic conductive member disposed in the at least one second slot;

[0016] wherein when the second electrical connector is mated with the first electrical connector, the third cylindrical accommodating body is inserted into the first cylindrical accommodating body through the first front end opening, the first cylindrical conductive terminal is inserted into the mating slot, and the latch is inserted into the inner cavity;

[0017] wherein the first annular elastic conductive member surrounds and contacts the latch, and the at least one second annular elastic conductive member surrounds and contacts the first cylindrical conductive terminal.

[0018] In an embodiment, the first cylindrical accommodating body has a first section and a second section, the first section has a first accommodating space, the second section has a second accommodating space, and the bottom of the first accommodating space is provided with a communication hole so that the first accommodating space is communicated with the second accommodating space.

[0019] In an embodiment, the first electrical connector further comprises a partition plate integrally formed with the first cylindrical accommodating body, and the partition plate separates the first section and the second section from the first cylindrical accommodating body.

[0020] In an embodiment, the partition plate is provided with a plurality of through holes for a plurality of studs to pass through.

[0021] In an embodiment, the side edge of the first section is formed with a groove, and the groove is adjacent to the partition plate.

[0022] In one embodiment, the first cylindrical conductive terminal is located in the first accommodating space, and the first electric connection unit further comprises a connecting block located in the second accommodating space and connected between the first cylindrical conductive terminal and the first electric connection terminal.

[0023] In one embodiment, the side of the connecting block is formed with at least one third embedding groove, and the inner surface of the second accommodating space is formed with at least one embedding member corresponding to the at least one third embedding groove.

[0024] In one embodiment, the side of the first cylindrical conductive terminal is formed with an annular embedding groove, and the annular embedding groove is adjacent to the second head end opening.

[0025] In one embodiment, the first electric connection unit further comprises an annular cover member combined to the second head end opening and having at least one buckling portion buckled into the annular embedding groove.

[0026] In one embodiment, the side of the second cylindrical accommodating body is formed with a first plane and a second plane, and the third rear end opening of the third cylindrical accommodating body is connected to the second plane.

[0027] In one embodiment, the rear side of the head end of the second cylindrical accommodating body is formed with a plurality of first recesses, and the end side of the head end of the second cylindrical accommodating body is formed with a plurality of second recesses.

[0028] In one embodiment, the second electric connector further comprises a positioning mechanism integrally formed, and the positioning mechanism comprises:

[0029] an annular combined member having a gap and being sleeved into the head end of the second cylindrical accommodating body;

[0030] two first side plates connected to two opening edges of the gap, and each of the first side plates is provided with a connecting arm;

[0031] a first platform connected between the two first side plates;

[0032] two elastic supporting members, wherein each of the elastic supporting members comprises a first arm, a second arm and a connecting portion, the first arm is horizontally arranged on the first platform, one end of the second arm is connected to the first arm, the connecting portion is connected to the other end of the second arm, and the second arm and the first arm have an included angle therebetween;

[0033] an elastic plate arranged on two of the connecting portions;

[0034] a buckling member formed on one end side of the elastic plate;

[0035] a stop block arranged on the first platform;

[0036] The bottom end of the connecting arm is above the first arm, and the bottom surface of the first platform abuts the first plane of the second cylindrical accommodating body.

[0037] In one embodiment, the buckle is buckled into the groove when the second electrical connector is mated with the first electrical connector.

[0038] In one embodiment, the second electrical connector further comprises a position releasing member, and the position releasing member comprises:

[0039] two pull arms, wherein one end of each of the pull arms forms a hook portion to hook the connecting arm;

[0040] two second side plates, wherein each of the second side plates connects the other end of the pull arm;

[0041] a connecting plate connected between the two second side plates;

[0042] a second platform connected between the two second side plates;

[0043] an inclined plate connected between the connecting plate and the second platform, and simultaneously connected between the two second side plates, wherein a rough structure is formed on the surface of the inclined plate; and

[0044] a tongue extending from the second platform and located between the two second side plates, wherein the bottom surface of the tongue forms an abutting member, and the abutting member abuts the stop block.

[0045] In one embodiment, when the inclined plate is forced, the two pull arms pull back the two connecting arms, so that the two second arms drive the elastic plate to be raised, thereby causing the buckle to be released from the groove.

[0046] In one embodiment, the bottom surface of the first platform forms a plurality of first blocks, and the plurality of first blocks correspondingly embed into the plurality of first grooves of the second cylindrical accommodating body when the annular connecting member is sleeved into the head end of the second cylindrical accommodating body.

[0047] In one embodiment, the annular connecting member has a plurality of second blocks, and the plurality of second blocks correspondingly embed into the plurality of second grooves of the second cylindrical accommodating body when the annular connecting member is sleeved into the head end of the second cylindrical accommodating body.

[0048] In one embodiment, the second electrical connector further comprises a cylindrical wire bundling member sleeved on the second cylindrical accommodating body.

[0049] In one embodiment, the second electrical connector further comprises a cylindrical covering member sleeved on the cylindrical wire bundling member.

[0050] In an embodiment, the second electrical connection unit of the second electrical connector is made by forging technology, such that the second electrical connection terminal and the second cylindrical conductive terminal have an included angle therebetween.

[0051] In another aspect, the present application also provides an energy storage system, which comprises a cabinet and a plurality of energy storage battery modules accommodated in the cabinet, and further comprises a plurality of the electrical connector assemblies as described above, such that the plurality of energy storage battery modules are connected in series and / or in parallel by the plurality of electrical connector assemblies. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 A schematic architecture diagram of a conventional energy storage system;

[0053] Figure 2 A perspective view of an electrical connector assembly according to the present application;

[0054] Figure 3 A perspective sectional view of the electrical connector assembly according to the present application;

[0055] Figure 4 A perspective view of a first electrical connector; Figure 2

[0056] A perspective sectional view of the first electrical connector; Figure 5 Figure 4 A perspective exploded view of the first electrical connector;

[0057] Figure 6 Figure 4 A perspective view of a second electrical connector;

[0058] Figure 7 A perspective sectional view of the second electrical connector; Figure 2

[0059] A perspective exploded view of the second electrical connector; Figure 8 Figure 7 A perspective view of a positioning mechanism;

[0060] Figure 9 Figure 7 A perspective sectional view of the positioning mechanism;

[0061] Figure 10 A perspective view of a positioning release;

[0062] Figure 11 A perspective view of the positioning release.

[0063] REFERENCE NUMERALS:

[0064] EA: Electrical connector assembly

[0065] 1: First electrical connector ​​​​

[0066] 11: first cylindrical accommodating body,

[0067] 110: groove,

[0068] 111: first section

[0069] 112: second section

[0070] 12: first electrical connection unit

[0071] 121: annular slot

[0072] 120: annular cover

[0073] 1201: buckle

[0074] 12F: first cylindrical conductive terminal

[0075] 12F2: inner cavity

[0076] 12F3: first slot

[0077] 12R: first electrical connection terminal

[0078] 12E: connecting block

[0079] 12E1: third slot

[0080] 13: first annular elastic conductive member

[0081] 14: partition plate

[0082] 141: perforation

[0083] 2: second electrical connector

[0084] 21: second cylindrical accommodating body

[0085] 211: first plane

[0086] 212: second plane

[0087] 213: first groove

[0088] 214: second groove

[0089] 22: third cylindrical accommodating body

[0090] 23: second electrical connection unit

[0091] 231: second electrical connection terminal

[0092] 232: second cylindrical conductive terminal

[0093] 2321: abutting slot

[0094] 2322: latch

[0095] 2323: second slot

[0096] 24: second annular elastic conductive member

[0097] 25: positioning mechanism

[0098] 250: connecting arm

[0099] 251: annular coupling member

[0100] 2511: notch

[0101] 2512: second block

[0102] 252: first side plate

[0103] 253: first platform

[0104] 2531: first block

[0105] 254: elastic support member

[0106] 2541: first arm

[0107] 2542: second arm

[0108] 2543: connecting portion

[0109] 255: elastic plate

[0110] 256: clasp member

[0111] 257: stop block

[0112] 26: positioning release member

[0113] 261: pull arm

[0114] 262: second side plate

[0115] 263: connecting plate

[0116] 264: second platform

[0117] 265: inclined plate

[0118] 266: tongue

[0119] 267: abutting member

[0120] 27: cylindrical bundling member

[0121] 28: cylindrical covering member DETAILED DESCRIPTION

[0122] To enable your review committee to further understand the structure, features, purpose, and advantages of this utility model, detailed description of the preferred embodiments and drawings is attached below.

[0123] Figure 2 A perspective view of an electrical connector assembly is provided for this utility model. Figure 3 This is a three-dimensional sectional view of the electrical connector assembly of this utility model. Figure 2 and Figure 3 As shown, this invention proposes an electrical connector assembly EA, which mainly includes a first electrical connector 1 and a second electrical connector 2. The electrical connector assembly EA of this invention is applied to an energy storage system containing multiple energy storage battery modules, enabling any two of the energy storage battery modules to be connected in series or in parallel through the electrical connector assembly EA of this invention.

[0124] Furthermore, Figure 4 for Figure 2 The first electrical connector 1 is shown in a perspective view. Figure 5 for Figure 4 The first electrical connector 1 is shown in a perspective sectional view. Figure 6 for Figure 4 The exploded perspective view of the first electrical connector 1 is shown. Figures 2 to 6 As shown, the first electrical connector 1 mainly includes: a first cylindrical receiving body 11 having a first front opening and a first rear opening, a first electrical connection unit 12, and a first annular elastic conductive member 13. The first electrical connection unit 12 is housed within the first cylindrical receiving body 11 and includes a first cylindrical conductive terminal 12F and a first electrical connection terminal 12R connected to the first cylindrical conductive terminal 12F. In the first electrical connector 1, the first electrical connection terminal 12R protrudes beyond the first rear opening. The first cylindrical conductive terminal 12F has a second head opening near the first front opening. The first cylindrical conductive terminal 12F also has an inner cavity 12F2 communicating with the second head opening. The wall of the inner cavity 12F2 is provided with a first recess 12F3, and the first annular elastic conductive member 13 is disposed within the first recess 12F3.

[0125] More specifically, the first electrical connector 1 further includes a partition plate 14 integrally formed with the first cylindrical receiving body 11, and the partition plate 14 divides the first cylindrical receiving body 11 into a first segment 111 and a second segment 112, wherein the first segment 111 has a first receiving space, the second segment 112 has a second receiving space, and a connecting hole is formed at the bottom of the first receiving space, so that the first receiving space communicates with the second receiving space. Figure 4 and Figure 5As shown, the first cylindrical conductive terminal 12F is located in the first accommodating space, and the first electric connecting unit 12 further includes a connecting block 12E located in the second accommodating space and connected between the first cylindrical conductive terminal 12F and the first electric connecting terminal 12R.

[0126] As shown, the side of the connecting block 12E is formed with at least one third embedding groove 12E1, and the inner surface of the second accommodating space is formed with at least one embedding member corresponding to the at least one third embedding groove 12E1. Also, the partition plate 14 is provided with a plurality of through holes 141 for a plurality of studs to pass through. On the other hand, the side of the first section 111 is formed with a groove 110, and the groove 110 is adjacent to the partition plate 14. In addition, the side of the first cylindrical conductive terminal 12F is formed with an annular embedding groove 121, and the annular embedding groove 121 is adjacent to the second head end opening. Correspondingly, the first electric connecting unit 12 further includes an annular cover member 120 combined to the second head end opening and having at least one buckling portion 1201 buckled into the annular embedding groove 121.

[0127] Further, Figure 7 For Figure 2 As shown in the perspective view of the second electric connector 2, Figure 8 For Figure 7 As shown in the perspective view of the second electric connector 2, and Figure 9 For Figure 7 As shown in the perspective exploded view of the second electric connector 2. As shown in the related drawings, the second electric connector 2 mainly includes a second cylindrical accommodating body 21 having a side end opening and a second rear end opening, a third cylindrical accommodating body 22 having a third front end opening and a third rear end opening, a second electric connecting unit 23, at least one second annular elastic conductive member 24, an integrally formed positioning mechanism 25, and a positioning releasing member 26. In the second electric connector 2, the side of the second cylindrical accommodating body 21 is formed with a first plane 211 and a second plane 212, and the rim of the third rear end opening of the third cylindrical accommodating body 22 is connected to the second plane 212. Also, the rear side of the head end of the second cylindrical accommodating body 21 is formed with a plurality of first grooves 213, and the end side of the head end of the second cylindrical accommodating body 21 is formed with a plurality of second grooves 214.

[0128] As Figure 7 , Figure 8 , Figure 9As shown, the third rear end opening of the third cylindrical accommodating body 22 communicates with the side end opening. Moreover, the second electrical connecting unit 23 comprises a second electrical connecting terminal 231 and a second cylindrical conductive terminal 232 connected to a side edge of the second electrical connecting terminal 231. In practice, the second electrical connecting unit 23 of the second electrical connector 2 can be made by forging technology, so that the second electrical connecting terminal 231 and the second cylindrical conductive terminal 232 have an included angle. For example, in an exemplary application, when the included angle is designed as 90°, the second electrical connector 2 is an L-shaped cylindrical special-shaped conductor. Unlike the prior art first electrical connector 121a or the second electrical connector 122a (see Figure 1 ) which are mostly made by stamping equipment or CNC equipment, the second electrical connecting unit 23 made by forging technology can be adaptively changed in conductor shape according to different application environments and customer use requirements.

[0129] The second electrical connecting terminal 231 is accommodated in the second cylindrical accommodating body 21, the second cylindrical conductive terminal 232 is accommodated in the third cylindrical accommodating body 22, the second cylindrical conductive terminal 232 has a fourth head end opening close to the third front end opening and a mating slot 2321, the slot bottom of the mating slot 2321 is provided with a plug 2322, and the slot wall of the mating slot 2321 is provided with at least one second embedding groove 2323. It is worth noting that the at least one second annular elastic conductive piece 24 is arranged in the at least one second embedding groove 2323.

[0130] In this way, when the second electrical connector 2 mates with the first electrical connector 1, the third cylindrical accommodating body 22 is inserted into the first cylindrical accommodating body 11 through the first front end opening, the first cylindrical conductive terminal 12F is inserted into the mating slot 2321, and the plug 2322 is inserted into the inner cavity 12F2. At the same time, the first annular elastic conductive piece 13 surrounds and contacts the plug 2322, and the at least one second annular elastic conductive piece 24 surrounds and contacts the first cylindrical conductive terminal 12F.

[0131] Further, Figure 10 is a perspective view of a positioning mechanism 25, and Figure 11 is a perspective view of a positioning release 26. In the second electrical connector 2, the positioning mechanism 25 comprises an annular coupling piece 251, two first side plates 252, a first platform 253, two elastic supporting pieces 254, an elastic plate 255, a buckle piece 256, and a stop block 257. Specifically, the annular coupling piece 251 has a notch 2511 and is used to be sleeved into the head end of the second cylindrical accommodating body 21. Moreover, the two first side plates 252 are connected to the two mouth edges of the notch 2511, and each of the first side plates 252 is provided with a connecting arm 250.

[0132] As mentioned above, the first platform 253 is connected between the two first side plates 252 and the two elastic support members 254. Each of the elastic support members 254 includes a first arm 2541, a second arm 2542, and a connecting portion 2543. The first arm 2541 is horizontally arranged on the first platform 253. One end of the second arm 2542 is connected to the first arm 2541. The other end of the second arm 2542 is connected to the connecting portion 2543. The second arm 2542 and the first arm 2541 form an angle. In more detail, the elastic plate 255 is arranged on the two connecting portions 2543. The buckle member 256 is formed on one end of the elastic plate 255. The stop block 257 is arranged on the first platform 253. The bottom end of the connecting arm 250 is located on the first arm 2541. The bottom surface of the first platform 253 abuts against the first flat surface 211 of the second cylindrical accommodating body 21. In this way, when the second electrical connector 2 is connected to the first electrical connector 1, the buckle member 256 is buckled into the groove 110.

[0133] In addition, the bottom surface of the first platform 253 is formed with a plurality of first blocks 2531. When the annular connecting member 251 is sleeved into the head end of the second cylindrical accommodating body 21, the plurality of first blocks 2531 are correspondingly embedded into the plurality of first grooves 213 of the second cylindrical accommodating body 21. On the other hand, the annular connecting member 251 has a plurality of second blocks 2512. When the annular connecting member 251 is sleeved into the head end of the second cylindrical accommodating body 21, the plurality of second blocks 2512 are correspondingly embedded into the plurality of second grooves 214 of the second cylindrical accommodating body 21. In addition, the second electrical connector 2 further includes a cylindrical wire bundling member 27, which is sleeved on the second cylindrical accommodating body 21. Further, the second electrical connector 2 further includes a cylindrical covering member 28, which is sleeved on the cylindrical wire bundling member 27.

[0134] In the second electrical connector 2, the position releasing member 26 comprises two pull arms 261, two second side plates 262, a connecting plate 263, a second platform 264, an inclined plate 265, and a tongue 266. Each of the pull arms 261 has a hook portion 2611 at one end to hook the connecting arm 250, and the other end of each of the pull arms 261 is connected to the second side plate 262. The connecting plate 263 and the second platform 264 are both connected between the two second side plates 262. The inclined plate 265 is connected between the connecting plate 263 and the second platform 264, and is also connected between the two second side plates 262. It is worth noting that the surface of the inclined plate 265 has a rough structure. In more detail, the tongue 266 extends from the second platform 264 and is located between the two second side plates 262. The bottom surface of the tongue 266 has an abutting member 267 which abuts the stopper 257.

[0135] In this way, when the inclined plate 265 is forced, the two connecting arms 250 are pulled by the two pull arms 261, so that the second arms 2542 drive the elastic plate 255 to be raised, and the buckle member 256 is separated from the groove 110.

[0136] In summary, the structure and use of the multi-layer energy-saving window of the present application have been completely and clearly described. It must be emphasized that the above-mentioned disclosure is the preferred embodiment, and any modification or modification based on the technical idea of the present application is easily known by those skilled in the art, and does not fall within the scope of the patent right of the present application.

Claims

1. An electrical connector assembly comprising: The first electric connector comprises: a first cylindrical accommodating body having a first front end opening and a first rear end opening; a first electric connection unit accommodated in the first cylindrical accommodating body and comprising a first cylindrical conductive terminal and a first electric connection terminal connected to the first cylindrical conductive terminal, wherein the first electric connection terminal is exposed outside the first rear end opening, the first cylindrical conductive terminal has a second head end opening close to the first front end opening, the first cylindrical conductive terminal further has an inner cavity communicating with the second head end opening, and a first embedding groove is arranged on the wall of the inner cavity; and a first annular elastic conductive member arranged in the first embedding groove; and The second electric connector comprises: a second cylindrical accommodating body having a side end opening and a second rear end opening; a third cylindrical accommodating body having a third front end opening and a third rear end opening, and the third rear end opening communicates with the side end opening; a second electric connection unit comprising a second electric connection terminal and a second cylindrical conductive terminal connected to a side edge of the second electric connection terminal, wherein the second electric connection terminal is accommodated in the second cylindrical accommodating body, the second cylindrical conductive terminal is accommodated in the third cylindrical accommodating body, the second cylindrical conductive terminal has a fourth head end opening close to the third front end opening and a docking groove, the bottom of the docking groove is provided with a latch, and at least one second embedding groove is arranged on the groove wall of the docking groove; and at least one second annular elastic conductive member arranged in the at least one second embedding groove; When the second electric connector is docked with the first electric connector, the third cylindrical accommodating body is inserted into the first cylindrical accommodating body through the first front end opening, the first cylindrical conductive terminal is inserted into the docking groove, and the latch is inserted into the inner cavity; The first annular elastic conductive member surrounds and contacts the latch, and the at least one second annular elastic conductive member surrounds and contacts the first cylindrical conductive terminal. The first cylindrical accommodating body has a first section and a second section, the first section has a first accommodating space, the second section has a second accommodating space, and a communication hole is arranged on the bottom of the first accommodating space so that the first accommodating space communicates with the second accommodating space.

2. The electrical connector assembly of claim 1, wherein, The first electric connector further comprises a partition plate integrally formed with the first cylindrical accommodating body, and the partition plate separates the first section and the second section from the first cylindrical accommodating body.

3. The electrical connector assembly of claim 2, wherein, A plurality of through holes are arranged on the partition plate for a plurality of studs to pass through.

4. The electrical connector assembly of claim 3, wherein, The side edge of the first section is formed with a groove, and the groove is adjacent to the partition plate.

5. The electrical connector assembly of claim 4, wherein, The first cylindrical conductive terminal is located in the first accommodating space, and the first electric connection unit further comprises a connecting block located in the second accommodating space and connected between the first cylindrical conductive terminal and the first electric connection terminal.

6. The electrical connector assembly of claim 3, wherein, The side edge of the connecting block is formed with at least one third embedding groove, and the inner surface of the second accommodating space is formed with at least one embedding member corresponding to the at least one third embedding groove.

7. The electrical connector assembly of claim 6, wherein, The side edge of the first cylindrical conductive terminal is formed with an annular embedding groove adjacent to the second head end opening.

8. The electrical connector assembly of claim 7, wherein, ​ 9. The electrical connector assembly of claim 8, wherein, The first electric connection unit further includes a ring-shaped cover member combined to the second head end opening and having at least one fastening portion fastened into the ring-shaped recess.

10. The electrical connector assembly of claim 5, wherein, The side of the second cylindrical accommodating body is formed with a first plane and a second plane, and the third rear end opening of the third cylindrical accommodating body is connected to the second plane.

11. The electrical connector assembly of claim 10, wherein, The rear side of the head end of the second cylindrical accommodating body is formed with a plurality of first grooves, and the end side of the head end of the second cylindrical accommodating body is formed with a plurality of second grooves.

12. The electrical connector assembly of claim 11, wherein, The second electric connector further includes a positioning mechanism integrally formed, and the positioning mechanism includes: a ring-shaped combination member having a gap and sleeved into the head end of the second cylindrical accommodating body; two first side plates connected to the two opening edges of the gap, and each of the first side plates is provided with a connecting arm; a first platform connected between the two first side plates; two elastic supporting members, wherein each of the elastic supporting members includes a first arm, a second arm and a connecting portion, the first arm is horizontally arranged on the first platform, one end of the second arm is connected to the first arm, the connecting portion is connected to the other end of the second arm, and the second arm and the first arm have an included angle therebetween; an elastic plate arranged on the two connecting portions; a clamping member formed on one end side of the elastic plate; and a stop block arranged on the first platform; wherein the bottom end of the connecting arm is located on the first arm, and the bottom surface of the first platform abuts against the first plane of the second cylindrical accommodating body.

13. The electrical connector assembly of claim 12, wherein, When the second electric connector is connected to the first electric connector, the clamping member is fastened into the groove.

14. The electrical connector assembly of claim 13, wherein, The second electric connector further includes a positioning release member, and the positioning release member includes: two pull arms, wherein one end of each of the pull arms is formed with a hook portion to hook the connecting arm; two second side plates, wherein each of the second side plates is connected to the other end of the pull arm; a connecting plate connected between the two second side plates; a second platform connected between the two second side plates; an inclined plate connected between the connecting plate and the second platform, and simultaneously connected between the two second side plates, wherein a rough structure is formed on the surface of the inclined plate; and a tongue extending from the second platform and located between the two second side plates, wherein the bottom surface of the tongue is formed with an abutting member, and the abutting member abuts against the stop block.

15. The electrical connector assembly of claim 14, wherein, When force is applied to the inclined plate, the two connecting arms are pulled backward by the two pull arms, so that the two second arms drive the elastic plate to be raised, thereby making the clamping member disengage from the groove.

16. The electrical connector assembly of claim 14, wherein, The bottom surface of the first platform is formed with a plurality of first blocks, and the plurality of first blocks are correspondingly embedded into the plurality of first grooves of the second cylindrical accommodating body when the ring-shaped combination member is sleeved into the head end of the second cylindrical accommodating body.

17. The electrical connector assembly of claim 16, wherein, The ring-shaped combination member has a plurality of second blocks, and the plurality of second blocks are correspondingly embedded into the plurality of second grooves of the second cylindrical accommodating body when the ring-shaped combination member is sleeved into the head end of the second cylindrical accommodating body.

18. The electrical connector assembly of claim 16, wherein, The second electric connector further includes a cylindrical wire bundling member sleeved on the second cylindrical accommodating body.

19. The electrical connector assembly of claim 18, wherein, The second electric connector further includes a cylindrical covering member sleeved on the cylindrical wire bundling member.

20. The electrical connector assembly of claim 18, wherein, The second electric connection unit of the second electric connector is made by forging technology, so that the second electric connection terminal and the second cylindrical conductive terminal have an included angle therebetween.

21. An energy storage system comprising a cabinet and a plurality of energy storage battery modules housed within the cabinet, wherein, Further comprising a plurality of the electric connector assembly as claimed in any one of claims 1 to 19, such that the plurality of the energy storage battery modules are connected in series and / or in parallel by the plurality of the electric connector assemblies.

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