Intelligent energy storage system power connection line

Abstract

The utility model discloses an intelligent energy storage system power connection line: including connecting sleeve, connecting plug, center connecting piece, bung and terminal, be provided with the first boss of connecting plug cooperation on connecting sleeve, be provided with conductor part in the first boss, and connecting plug is with the first boss interference seal, be provided with the first connecting screw hole of cooperation with center connecting piece in the conductor part, be provided with the second connecting screw hole of connection with center connecting piece on bung, center connecting piece sets up in connecting plug, and is connected with connecting sleeve, connecting plug and bung through first connecting screw hole and second connecting screw hole and is integrated, center connecting piece is connected with terminal, be provided with temperature measurement module on center connecting piece, this scheme discloses a kind of high-current power connection line, for low-voltage power distribution scene, can guarantee the reliable connection between power generation equipment, power distribution equipment and electrical equipment, reduce electric energy loss, and the operating temperature of power equipment end can be monitored in real time on line.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage power transmission and distribution technology, and in particular to a power connection line for an intelligent energy storage system. Background Technology

[0002] In low-voltage transmission lines, low-voltage power cables need to be connected to power equipment through cable accessories to control the on / off state of power and ensure the effective transmission of electrical energy. Currently, the industry commonly uses cold-shrink or heat-shrink cable accessories as key connection components between transmission lines and equipment ports. Heat-shrink accessories are usually made of materials such as polyethylene and ethylene-vinyl acetate blends. They are installed based on the principle of heat shrinkage and use a stress tube (a material with a high dielectric constant and moderate volume resistivity) to disperse electric field stress using a parameter control method. Although they have the advantages of low price and convenient installation, the inherent elasticity of the material is poor. During long-term operation, thermal expansion and contraction can easily lead to air gaps at the interface, resulting in insufficient sealing performance and difficulty in effectively preventing moisture or water intrusion. Cold-shrink accessories utilize the pre-expansion and rebound properties of elastomers such as silicone rubber or EPDM rubber for installation, requiring no heating. Their stress control often combines geometric methods (such as stress cones) and parameter control methods, resulting in superior interface performance compared to heat-shrink accessories. However, after storage or installation, elastic stress relaxation may occur, leading to a decrease in interface clamping force, making it difficult to guarantee a stable long-term seal. Furthermore, electric field stress treatment still relies on the stability of material parameters. More significantly, when the cable shield is stripped, electric field concentration occurs at the accessory joint. Especially if the size of the stress cone or stress tube is poorly matched to the cable insulation outer diameter, or if the on-site construction process is rough, electric field distortion will be exacerbated, inducing partial discharge. In humid environments, this can ultimately lead to insulation degradation or even short circuits. In addition, existing cable accessories generally lack integrated temperature monitoring mechanisms, failing to detect thermal faults at the joint in real time. The creepage structure design of the accessory's outer insulation is often not adequately optimized for harsh environments, making the insulation surface prone to creepage paths due to dirt accumulation or moisture, reducing the long-term stability of equipment operation. These defects collectively limit the reliability of cable accessories under complex operating conditions and urgently need improvement. Utility Model Content

[0003] The purpose of this invention is to provide an intelligent power connection cable for an energy storage system, addressing the aforementioned shortcomings. This solution resolves issues such as inefficient temperature monitoring at the connection points of transmission lines and the large connector size when connecting multiple cables.

[0004] This utility model is achieved through the following solution: A power connection cable for an intelligent energy storage system includes a connecting sleeve, a connecting plug, a central connector, a plug, and terminals. The connecting sleeve has a first boss that mates with the connecting plug, and a conductor portion is disposed within the first boss. The connecting plug is press-fitted with the first boss. The conductor portion has a first connecting screw hole that mates with the central connector. The plug has a second connecting screw hole that connects with the central connector. The central connector is disposed within the connecting plug and is integrally connected to the connecting sleeve, the connecting plug, and the plug via the first and second connecting screw holes. The central connector is connected to the terminals and has a temperature sensing module disposed on it.

[0005] Based on the structure of the power connection cable for the intelligent energy storage system described above, the connection plug is configured as one or more.

[0006] Based on the structure of the power connection cable of the intelligent energy storage system described above, when there is only one connector, the central connector includes a double-ended screw and a locking nut. One end of the double-ended screw is connected to the first connecting screw hole, and the other end is connected to the second connecting screw hole. A connecting sleeve is provided on the terminal block and connected to the double-ended screw. The connecting sleeve is sleeved on the double-ended screw. The locking nut is sleeved on the end of the double-ended screw near the connecting sleeve. The temperature measuring module is sleeved on the double-ended screw.

[0007] Based on the structure of the power connection cable of the above-mentioned intelligent energy storage system, when there are multiple connection plugs, adjacent connection plugs are interlocked. The central connecting member includes a double-ended screw, a connecting sleeve, and a locking nut. One end of the double-ended screw near the conductor is connected to the first connecting screw hole. One end of the double-ended screw near the plug is connected to the second connecting screw hole. Adjacent double-ended screws are connected as a whole by the connecting sleeve.

[0008] Based on the structure of the power connection cable of the above-mentioned intelligent energy storage system, the locking nut and the temperature measuring module are both set on the double-ended screw at the end.

[0009] Based on the above-mentioned structure of a power connection line for an intelligent energy storage system, the connecting sleeve is a conductive structure, the length of the connecting sleeve is not less than the length of the double-ended screw, and both ends of the connecting sleeve are tightly connected to the threaded rods at the ends of the adjacent double-ended screws.

[0010] Based on the above-mentioned structure of the power connection cable of an intelligent energy storage system, the connecting sleeve includes a first end and a second end. The connecting sleeve is installed inside the cabinet during assembly. The first end is the end that contacts the cabinet, and the second end is the end that is away from the cabinet. A cavity structure for accommodating a sealing ring is provided on the first end, and the sealing ring is installed in the cavity structure.

[0011] Based on the structure of the power connection line of the above-mentioned intelligent energy storage system, the connecting sleeve is provided with bolt holes for connecting to the cabinet structure, and the cabinet interior and the cabinet structure are connected as a whole by connecting bolts.

[0012] Based on the above-mentioned structure of a power connection cable for an intelligent energy storage system, the conductor portion is located at the center of the integrated sleeve, the first boss is located at the center of the first end, the conductor portion protrudes from the second end to form a second conductor member, and the conductor portion protrudes from the first boss to form a first conductor member; a second boss is provided around the circumferential position of the second conductor member, and the center of the second boss on the second end is circular and configured as multiple raised rings.

[0013] Based on the structure of the power connection line of the above-mentioned intelligent energy storage system, the connection line formed by the connecting sleeve, connecting plug, central connector, plug and terminal is a double-ended structure.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. This solution discloses a high-current power connection cable with a maximum current capacity of 630A. It can be widely used in various battery pack connection scenarios of various energy storage devices, ensuring reliable connection of each energy storage module, reducing power loss, and enabling real-time online monitoring of the operating temperature of the connection line to ensure the safe and stable operation of the energy storage system.

[0015] 2. This solution uses a sealing ring structure between the epoxy sleeve and the electrical equipment cabinet panel for sealing. The sleeve is fixed to the electrical cabinet panel by nesting and tightening internal bolts. After use, the plug is sealed inside with a cap, and there is an interference seal between the plug body structure and the epoxy sleeve boss. This allows the overall sealing rating of the connection cable to reach IP6.

[0016] 3. This solution employs a specially designed wireless data acquisition unit, embedded between the fastening nut and the sealing cap, directly connected and fitted to the high-voltage end to monitor conductor temperature in real time. This module requires no additional power supply or cables to the receiving device, operating on its own power source. Through host computer software, it can detect and record real-time temperature, operating voltage, and other data of the high-voltage equipment; it also enables thermal fault detection of energy storage devices, providing comprehensive safety assurance for the energy storage system.

[0017] 4. This solution uses a flexible cable to connect two connectors in series, which can be used to connect multiple transmission lines in parallel or to connect multiple connection lines together at the same interface, according to user needs.

[0018] 5. To prevent internal creepage between electrical connections, multiple steps are added to the inner / outer side of the electrical cabinet of the bushing, and a boss design is added to the outer side of the electrical cabinet. This can increase the creepage distance inside / outside the electrical equipment cabinet and improve the operational stability of the power equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a single connector plug in this utility model; Figure 2 This is a schematic diagram of the overall structure of the present invention when there are two connecting plugs; Figure 3 This is a schematic diagram of the overall appearance structure of a single connector plug in this utility model; Figure 4 This is a schematic diagram of the structure of the present invention when it is configured with two heads; Figure 5 This is a schematic diagram illustrating the use of the power connection cable in the intelligent energy storage system of this utility model; Reference numerals: 1. Connecting sleeve; 2. Connecting plug; 3. Center connector; 4. Plug; 5. Terminal block; 6. First boss; 7. Conductor part; 8. First connecting screw hole; 9. Second connecting screw hole; 10. Temperature measuring module; 11. First end; 12. Second end; 13. Cavity structure; 14. Sealing ring; 15. Bolt hole; 31. Double-ended screw; 32. Locking nut; 33. Connecting sleeve; 51. Wiring collar; 71. Second conductor; 72. First conductor; 73. Second boss; 74. convex ring. Detailed Implementation

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a predetermined orientation, or be constructed and operated in a predetermined orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0024] Example 1 like Figures 1-5 As shown, this utility model provides a technical solution: A power connection cable for an intelligent energy storage system includes a connecting sleeve 1, a connecting plug 2, a central connector 3, a plug 4, and a terminal block 5. The connecting sleeve 1 has a first boss 6 that mates with the connecting plug 2, and a conductor portion 7 is provided inside the first boss 6. The connecting plug 2 and the first boss 6 are press-fitted together. The conductor portion 7 has a first connecting screw hole 8 that mates with the central connector 3. The plug 4 has a second connecting screw hole 9 that connects with the central connector 3. The central connector 3 is disposed in the connecting plug 2 and is connected to the connecting sleeve 1, the connecting plug 2, and the plug 4 as a whole through the first connecting screw hole 8 and the second connecting screw hole 9. The central connector 3 is connected to the terminal block 5, and a temperature measuring module 10 is provided on the central connector 3.

[0025] Based on the above structure, in this solution, the connecting sleeve 1 and the connecting plug 2 are connected by an interference fit to ensure the sealing of the connection. The temperature measuring module 10 uses a wireless data acquisition device, embedded between the fastening nut and the sealing cap 4, and is directly connected and fitted to the high-voltage end to monitor the conductor temperature in real time. This module does not require additional power supply or cables to the receiving device, and adopts an inductive self-powered method. Through the host computer software, real-time temperature, humidity, and other data of the high-voltage equipment can be detected and recorded.

[0026] As an example, the connector 2 can be set to one or more. This solution can be used to connect the connectors 2 to each other according to different usage environments, and the ends can be sealed with plugs 4 to ensure flexibility and safety during use.

[0027] As an example, when there is only one connector 2, the central connector 3 may include a double-ended screw 31 and a locking nut 32. One end of the double-ended screw 31 is connected to the first connecting screw hole 8, and the other end is connected to the second connecting screw hole 9. A wiring sleeve 51 connected to the double-ended screw 31 is provided on the terminal block 5. The wiring sleeve 51 is sleeved on the double-ended screw 31. The locking nut 32 is sleeved on the end of the double-ended screw 31 near the wiring sleeve 51. The temperature measuring module 10 is sleeved on the double-ended screw 31.

[0028] Based on the above structure, this solution uses a double-ended screw 31 to connect the connector 2, connector sleeve 1, and plug 4 into one unit, so that the interference-sealed connector 2, connector sleeve 1, and connector 2 and plug 4 form a tighter seal. The locking nut 32 is used to lock the wiring collar 51 and conductor 7, making the entire conductive structure tighter. Since the double-ended screw 31 is a conductive connecting rod, the temperature measuring module 10 can be directly used to measure the temperature of the conductor connection by fitting it on the double-ended screw 31.

[0029] As an example, when there are multiple connector plugs 2, adjacent connector plugs 2 are interlocked. The central connector 3 may include a double-ended screw 31, a connecting sleeve 33, and a locking nut. One end of the double-ended screw 31 near the conductor part 7 is connected to the first connecting screw hole 8. One end of the double-ended screw 31 near the plug 4 is connected to the second connecting screw hole 9. Adjacent double-ended screws 31 are connected as a whole by the connecting sleeve 33. Based on the above structure, when multiple connector plugs 2 need to be used in parallel, the external space is formed by the mutual insertion of the connector plugs 2 to form a sealed structure. The internal conductive components, including the double-headed screw 31, the connecting sleeve 33, and the conductor part 7, form a conductive path to transmit power to the terminal 5, thereby achieving stable, efficient, and safe transmission of the circuit.

[0030] As an example, both the locking nut and the temperature measuring module 10 are mounted on the end double-ended screw 31.

[0031] Based on the above structure, since the adjacent double-ended screws 31 need to be tightly connected by the connecting sleeve 33, in order to ensure the safety of the connection and avoid damage to the temperature measuring module 10, the temperature measuring module 10 needs to be set on the end double-ended screw 31.

[0032] As an example, the connecting sleeve 33 is a conductive structure, specifically a metal part. The length of the connecting sleeve 33 is not less than the length of the double-ended screw 31, and both ends of the connecting sleeve 33 are tightly connected to the threaded rods at the ends of the adjacent double-ended screw 31.

[0033] Based on the above structure, the connecting sleeve 33 is made of metal to facilitate the transmission of current along the connecting sleeve 33. At the same time, the length of the connecting sleeve 33 is specially set so that it can connect to the adjacent double-headed screw 31 and also abut against the wiring collar 51, so that the wiring collar 51 is kept locked between the connecting sleeve 33 and the conductor part 7, between adjacent connecting sleeves 33, or between the connecting sleeve 33 and the locking nut 32, to avoid discharge due to loosening of the wiring collar 51 and to ensure overall safety.

[0034] As an example, the connecting sleeve 1 may include a first end 11 and a second end 12. The connecting sleeve 1 is installed inside the cabinet during assembly. The first end 11 is the end that contacts the cabinet, and the second end 12 is the end that is away from the cabinet. A cavity structure 13 for accommodating the sealing ring 14 is provided on the first end 11, and the sealing ring 14 is disposed in the cavity structure 13.

[0035] Based on the above structure, by placing the entire connecting sleeve 1 inside the cabinet and placing the sealing ring 14 inside the cabinet on the contact surface with the first end 11, the entire leakage path can be extended, and the overall sealing performance can be enhanced.

[0036] As an example, bolt holes 15 for connecting the cabinet structure are provided on the connecting sleeve 1, and the cabinet interior and the cabinet structure are connected as a whole by connecting bolts.

[0037] As an example, the conductor portion 7 is located at the center of the integrated sleeve, the first boss 6 is located at the center of the first end 11, the conductor portion 7 protrudes from the second end 12 to form the second conductor member 71, and the conductor portion 7 protrudes from the first boss 6 to form the first conductor member 72; a second boss 73 is provided around the circumferential position of the second conductor member 71, and the center of the second boss 73 is circular and is provided on the second end with multiple raised rings 74.

[0038] Based on the above structure, the first boss 6 can increase the creepage distance between the first conductor 72 and the outside world, while the second boss 73 and multiple protruding rings 74 can also increase the creepage distance between the second conductor 71 and the outside world. This can prevent internal creepage between electrical connections and improve the operational stability of the power equipment.

[0039] As an example, the connecting wire formed by the connecting sleeve 1, the connecting plug 2, the central connector 3, the plug 4, and the terminal block 5 can be a double-ended structure.

[0040] Based on the above structure, a dual-head structure can achieve electrical connection between the positive and negative terminals of adjacent batteries.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power connection cable for an intelligent energy storage system, characterized in that: The device includes a connecting sleeve (1), a connecting plug (2), a central connector (3), a plug (4), and a terminal block (5). The connecting sleeve (1) is provided with a first boss (6) that mates with the connecting plug (2). A conductor part (7) is provided inside the first boss (6). The connecting plug (2) and the first boss (6) are press-fitted together. A first connecting screw hole (8) that mates with the central connector (3) is provided in the conductor part (7). A second connecting screw hole (9) that connects with the central connector (3) is provided on the plug (4). The central connector (3) is located in the connecting plug (2) and is connected to the connecting sleeve (1), the connecting plug (2), and the plug (4) as a whole through the first connecting screw hole (8) and the second connecting screw hole (9). The central connector (3) is connected to the terminal block (5). A temperature measuring module (10) is provided on the central connector (3).

2. The intelligent energy storage system power connection cable as described in claim 1, characterized in that: The connector (2) is configured as one or more.

3. The intelligent energy storage system power connection cable as described in claim 2, characterized in that: When there is only one connector (2), the central connector (3) includes a double-ended screw (31) and a locking nut (32). One end of the double-ended screw (31) is connected to the first connecting screw hole (8), and the other end is connected to the second connecting screw hole (9). The terminal block (5) is provided with a connecting sleeve (51) connected to the double-ended screw (31). The connecting sleeve (51) is sleeved on the double-ended screw (31). The locking nut (32) is sleeved on the end of the double-ended screw (31) near the connecting sleeve (51). The temperature measuring module (10) is sleeved on the double-ended screw (31).

4. The intelligent energy storage system power connection cable as described in claim 2, characterized in that: When there are multiple connectors (2), adjacent connectors (2) are interlocked. The central connector (3) includes a double-ended screw (31), a connecting sleeve (33) and a locking nut. One end of the double-ended screw (31) near the conductor (7) is connected to the first connecting screw hole (8). One end of the double-ended screw (31) near the plug (4) is connected to the second connecting screw hole (9). Adjacent double-ended screws (31) are connected as a whole by the connecting sleeve (33).

5. The intelligent energy storage system power connection cable as described in claim 4, characterized in that: The locking nut and the temperature measuring module (10) are both mounted on the end double-ended screw (31).

6. The intelligent energy storage system power connection cable as described in claim 4, characterized in that: The connecting sleeve (33) is a conductive structure. The length of the connecting sleeve (33) is not less than the length of the double-ended screw (31). Both ends of the connecting sleeve (33) are tightly connected to the threaded rods at the ends of the adjacent double-ended screws (31).

7. A power connection cable for an intelligent energy storage system as described in any one of claims 1 to 6, characterized in that: The connecting sleeve (1) includes a first end (11) and a second end (12). The connecting sleeve (1) is installed inside the cabinet during assembly. The first end (11) is the end that contacts the cabinet, and the second end (12) is the end that is away from the cabinet. A cavity structure (13) for accommodating the sealing ring (14) is provided on the first end (11). The sealing ring (14) is installed in the cavity structure (13).

8. The intelligent energy storage system power connection cable as described in claim 7, characterized in that: The connecting sleeve (1) is provided with bolt holes (15) for connecting with the cabinet structure, and the cabinet interior and the cabinet structure are connected as a whole by connecting bolts.

9. A power connection cable for an intelligent energy storage system as described in any one of claims 1 to 6, characterized in that: The conductor part (7) is located at the center of the integrated sleeve, the first boss (6) is located at the center of the first end (11), the conductor part (7) protrudes from the second end (12) to form the second conductor (71), and the conductor part (7) protrudes from the first boss (6) to form the first conductor (72); a second boss (73) is provided around the circumferential position of the second conductor (71), and the center of the second boss (73) on the second end is circular and is provided with multiple raised rings (74).

10. The power connection cable for an intelligent energy storage system as described in claim 1, characterized in that: The connecting line formed by the connecting sleeve (1), connecting plug (2), center connector (3), plug (4) and terminal block (5) is a double-ended structure.

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