AC / DC integrated energy storage high-voltage box structure

Abstract

The utility model discloses an alternating current and direct current integrated energy storage high-voltage box structure, which relates to the technical field of energy storage and comprises a high-voltage box body, alternating current side power wiring terminals are arranged at corresponding positions of the right lower side of a front panel and a rear panel of the high-voltage box body, and the alternating current side power wiring terminals are connected with the high-voltage box body. An alternating-current side switch is installed at the position, close to the alternating-current side power wiring terminal, of a front panel of the high-voltage box body, the alternating-current side power wiring terminal is connected with the upper wiring end of the alternating-current side switch through an alternating-current side copper bar, and the lower wiring end of the alternating-current side switch is connected with the alternating-current side power wiring terminal of a rear panel through an alternating-current side copper bar. The system complexity can be simplified, the alternating current side and the direct current side are integrated in one high-voltage box, the system design is simplified, the system complexity is reduced, the number of devices is reduced, the device arrangement is simplified, the system reliability is improved, and the production and assembly difficulty is reduced; and the production and assembly difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to an AC / DC integrated energy storage high-voltage box structure. Background Art

[0002] In modern power systems, energy storage technology, as an important means, is widely used in areas such as grid peak regulation, new energy grid integration, and energy storage and release. The main forms of energy storage technology include mechanical energy storage, chemical energy storage, and electromagnetic energy storage. Among these energy storage methods, high-voltage energy storage technology has become a hot topic in research and application due to its high efficiency, long life, and low environmental impact.

[0003] In existing energy storage systems, a separate AC and high-voltage box design is usually adopted. Although this design can achieve electrical isolation and energy conversion between the AC side and the DC side, the system is more complex and the production and maintenance costs are also high. In addition, since the AC and high-voltage boxes need to be connected through a wiring harness, this not only increases the complexity and cost of the connection, but also easily leads to wiring errors and poor contact problems. In existing energy storage systems, due to the separate design of the AC side and the DC side, the system is more complex and the production and maintenance costs are also high. In addition, since the AC and high-voltage boxes need to be connected through a wiring harness, this not only increases the complexity and cost of the connection, but also easily leads to wiring errors and poor contact problems. These problems not only affect the reliability and stability of the system, but also limit the further promotion and application of energy storage technology. Utility Model Content

[0004] In order to solve the problem of how to achieve high voltage integration of the AC side and the DC side, reduce the complexity and cost of the system, and improve the reliability and stability of the system; the purpose of this utility model is to provide an AC / DC integrated energy storage high voltage box structure.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: an AC / DC integrated energy storage high-voltage box structure, including a high-voltage box body, AC side power terminals are installed on the lower right side of the front panel of the high-voltage box body and the corresponding positions of the rear panel, an AC side switch is installed on the front panel of the high-voltage box body near the position of the AC side power terminal, the AC side power terminal is connected to the upper terminal of the AC side switch through the AC side copper busbar, the lower terminal of the AC side switch is connected to the AC side power terminal of the rear panel through the AC side copper busbar, and a current transformer is installed on the upper part of the AC side copper busbar.

[0006] Preferably, the upper side of the front panel of the high-voltage box body is equipped with an electric meter 485 communication terminal and a DC24V power supply terminal. The front panel of the high-voltage box body is equipped with a power supply control switch, a grid-connected control switch, and an off-grid control switch on the left side of the AC side switch. The grid-connected control switch and the off-grid control switch are equipped with an interlocking device. The front panel of the high-voltage box body is equipped with a DC side switch on the left side of the power supply control switch. The DC side incoming copper busbar, fuse, and DC contactor are installed inside the high-voltage box body. The side of the front panel of the high-voltage box body away from the AC side power terminal is equipped with an incoming positive power connector and an incoming negative power connector. The middle of the high-voltage box body is equipped with a DC side outgoing copper busbar. The middle of the rear panel of the high-voltage box body is equipped with an outgoing positive power connector and an outgoing negative power connector.

[0007] Preferably, an EMS communication interface, a control power display light, and a power supply display light are installed on one side of the front panel of the high-voltage box body. The front panel of the high-voltage box body is installed with air-conditioning power terminals, fire power supply, air-conditioning communication terminals, slave control terminals, emergency stop, 485 communication, fire feedback terminals, dehumidifier power terminals, and UPS power terminals. The middle part of the high-voltage box body is installed with a pre-charging group, IO module, and switching power supply module.

[0008] Preferably, the AC side power connection terminal, the three-phase electric meter, the lightning protection switch, and the PCS communication connection terminal are installed in the middle of the rear panel of the high-voltage box body.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. This application can simplify the complexity of the system, integrate the AC side and the DC side into a high-voltage box, simplify the design of the system, reduce the complexity of the system, reduce the number of devices, and simplify the layout of the equipment, improve the reliability of the system, and reduce the difficulty of production and assembly. The wiring harness assembly adopts a direct plug-in method, which reduces the difficulty of production and assembly.

[0011] 2. This application can reduce costs, make communication connections and wiring between AC and DC more convenient, shorten length, reduce costs, and reduce the volume of the energy storage cabinet. The integration of the AC side and the DC side greatly reduces the volume of the energy storage cabinet, thereby reducing the construction footprint and facilitating operation and maintenance. The integration of the AC side and the DC side simplifies the structural layout of the energy storage cabinet, facilitating customer operation and subsequent after-sales maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0013] Figure 1 It is a front structure schematic diagram of the present application.

[0014] Figure 2 It is a side structure schematic diagram of the present application.

[0015] Figure 3 It is a back structure schematic diagram of the present application.

[0016] Figure 4 It is an internal structure schematic diagram of the present application.

[0017] In the figure: 1, high-voltage box top cover; 2, high-voltage box body; 3, handle; 4, sealing rubber strip; 5, electric meter 485 communication terminal; 6, DC 24V power supply terminal; 7, UPS power supply terminal; 8, dehumidifier power supply terminal; 9, emergency stop, 485 communication, fire feedback terminal; 10, slave control terminal; 11, fire power supply, air conditioner communication terminal; 12, air conditioner power supply terminal; 13, EMS communication interface; 14, incoming positive power connector; 15, incoming negative power connector; 16, control power display lamp; 17, power supply display lamp; 18, DC side switch; 19, power supply control switch; 20, grid-connected control switch; 21, off-grid control switch; 22, interlocking device; 23, AC side switch; 24, AC side power terminal; 25, AC side copper bar; 26, current transformer; 27, DC side outgoing copper bar; 28, DC side incoming copper bar; 29, fuse; 30, DC contactor; 31, pre-charge group; 32, IO module; 33, switching power supply module; 34, PCS communication terminal; 35, lightning protection switch; 36, three-phase electric meter; 37, outgoing positive power connector; 38, outgoing negative power connector. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] Embodiment: as Figure 1-4 As shown, the utility model provides an AC / DC integrated energy storage high-voltage box structure, including a high-voltage box body 2, AC side power terminals 24 are installed on the lower right side of the front panel and the corresponding positions of the rear panel of the high-voltage box body 2, an AC side switch 23 is installed on the front panel of the high-voltage box body 2 near the AC side power terminal 24, the AC side power terminal 24 is connected to the upper terminal of the AC side switch 23 through the AC side copper busbar 25, the lower terminal of the AC side switch 23 is connected to the AC side power terminal 24 of the rear panel through the AC side copper busbar 25, and a current transformer 26 is installed on the upper part of the AC side copper busbar 25.

[0020] The upper side of the front panel of the high-voltage box body 2 is equipped with the electric meter 485 communication terminal 5 and the DC24V power supply terminal 6. The front panel of the high-voltage box body 2 is installed on the left side of the AC side switch 23 with the power supply control switch 19, the grid-connected control switch 20, and the off-grid control switch 21. The grid-connected control switch 20 and the off-grid control switch 21 are installed with an interlocking device 22. The front panel of the high-voltage box body 2 is installed on the left side of the power supply control switch 19. The DC side incoming copper bus 28, the fuse 29, and the DC contactor 30 are installed inside the high-voltage box body 2. The incoming positive power connector 14 and the incoming negative power connector 15 are installed on the side of the front panel of the high-voltage box body 2 away from the AC side power terminal 24. The DC side outgoing copper bus 27 is installed in the middle of the high-voltage box body 2. The outgoing positive power connector 37 and the outgoing negative power connector 38 are installed in the middle of the rear panel of the high-voltage box body 2.

[0021] The front panel of the high-voltage box body 2 is equipped with an EMS communication interface 13, a control power display light 16, and a power supply display light 17. The front panel of the high-voltage box body 2 is equipped with air-conditioning power terminals 12, fire power, air-conditioning communication terminals 11, slave control terminals 10, emergency stop, 485 communication, fire feedback terminals 9, dehumidifier power terminals 8, and UPS power terminals 7. The middle of the high-voltage box body 2 is equipped with a pre-charging group 31, an IO module 32, and a switching power supply module 33. By setting the EMS communication interface 13, the control power display light 16, the power supply display light 17, the air-conditioning power terminals 12, the fire power, the air-conditioning communication terminals 11, the slave control terminals 10, emergency stop, 485 communication, and fire feedback terminals Line terminal 9, dehumidifier power terminal 8, UPS power terminal 7, EMS communication interface 13, used to connect the system EMS system, control power display light 16, used to display the control power status, power supply display light 17, used to display the power supply status, air conditioning power terminal 12, used to connect the air conditioning working power supply, fire power supply, air conditioning communication terminal 11, used to connect the fire power supply and air conditioning communication, slave control terminal 10, used to connect slave control communication and slave control power supply, emergency stop, 485 communication, fire feedback terminal 9, used to connect the emergency stop button, 485 communication and fire feedback signal, dehumidifier power terminal 8, used to connect the dehumidifier working power supply, UPS power terminal 7, used for external UPS power access to the system.

[0022] The middle part of the rear panel of the high-voltage box body 2 is equipped with the AC side power terminal 24, the three-phase electric meter 36, the lightning protection switch 35, and the PCS communication terminal 34. By setting the three-phase electric meter 36, the lightning protection switch 35, and the PCS communication terminal 34, the PCS communication terminal 34 is used for the communication connection between the PCS and the system, the lightning protection switch 35 is used for the control of the lightning arrester, the three-phase electric meter 36 is used for the current transformer 26 to connect to collect the current and voltage on the AC side, the outgoing positive power connector 37, and the outgoing negative power connector 38.

[0023] Two symmetrically distributed handles 3 are fixedly mounted on the front panel of the high-voltage box body 2. By providing the handles 3, the high-voltage box body 2 can be easily taken out.

[0024] A sealing strip 4 is fixedly installed on the upper part of the high-voltage box body 2, and a high-voltage box top cover 1 is installed on the upper part of the high-voltage box body 2. The high-voltage box top cover 1 and the sealing strip 4 are in contact with each other. By setting the sealing strip 4, the interior of the high-voltage box body 2 is in a sealed state.

[0025] Working principle: In actual use, AC side power terminals 24 are installed on the lower right side of the front panel and the corresponding positions of the rear panel of the high-voltage box body 2. An AC side switch 23 is installed on the left side of the AC side power terminal 24 on the front panel. The 24 AC side power terminal is connected to the upper terminal of the AC side switch 23 through the AC side copper busbar 25. The lower terminal of the AC side switch 23 is connected to the AC side power terminal 24 on the rear panel through the AC side copper busbar 25. A current transformer 26 is installed on the AC side copper busbar 25. The AC side power terminal 24, the AC side copper busbar 25 and the AC side switch 23 on the front and rear panels constitute the AC circuit of the high-voltage box body 2, which can realize the switching of the AC circuit.

[0026] Above the AC side power terminal 24 on the front panel are the meter 485 communication terminal 5 and the DC24V power terminal 6. On the left side of the AC side switch 23 are the power supply control switch 19, the grid control switch 20, and the off-grid control switch 21, which respectively control the off-grid, grid-connected and mains power supply of the system power. There is an interlocking device 22 on the grid control switch 20 and the off-grid control switch 21. On the left side of the power supply control switch 19 is the DC side switch 18. The incoming line end of the DC side switch 18 is connected to the fuse 29 and the DC contactor 30 through the DC side incoming line copper bus 28. The fuse 29 and the DC contactor The switch 30 is then connected to the incoming positive power connector 14 and the incoming negative power connector 15 through the DC side incoming copper busbar 28. The DC side switch output terminal 18 is connected to the outgoing positive power connector 37 and the outgoing negative power connector 38 through the DC side outgoing copper busbar 27. The DC side switch 18, the fuse 29, the DC contactor 30, the DC side incoming copper busbar 28, the DC side outgoing copper busbar 27, the incoming positive power connector 14, the incoming negative power connector 15 and the outgoing positive power connector 37 and the outgoing negative power connector 38 together constitute the DC circuit of the high-voltage box body 2.

[0027] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An AC / DC integrated energy storage high-voltage box structure, comprising a high-voltage box body (2), characterized in that: AC side power connection terminals (24) are installed at the lower right side of the front panel and the corresponding positions of the rear panel of the high-voltage box body (2). An AC side switch (23) is installed at a position near the AC side power connection terminals (24) on the front panel of the high-voltage box body (2). The AC side power connection terminals (24) are connected to the upper connection terminals of the AC side switch (23) through the AC side copper busbar (25). The lower connection terminals of the AC side switch (23) are connected to the AC side power connection terminals (24) of the rear panel through the AC side copper busbar (25). A current transformer (26) is installed on the upper part of the AC side copper busbar (25).

2. The AC / DC integrated energy storage high-voltage box structure according to claim 1, characterized in that: The upper side of the front panel of the high-voltage box body (2) is equipped with a 485 communication terminal (5) for the electric meter and a DC24V power supply terminal (6). The front panel of the high-voltage box body (2) is equipped with a power supply control switch (19), a grid-connected control switch (20), and an off-grid control switch (21) at a position close to the left side of the AC side switch (23). The grid-connected control switch (20) and the off-grid control switch (21) are equipped with an interlocking device (22). The front panel of the high-voltage box body (2) is equipped with a DC side switch ( 18), a DC side incoming copper busbar (28), a fuse (29), and a DC contactor (30) are installed inside the high-voltage box body (2), an incoming positive power connector (14) and an incoming negative power connector (15) are installed on the side of the front panel of the high-voltage box body (2) away from the AC side power terminal (24), a DC side outgoing copper busbar (27) is installed in the middle of the high-voltage box body (2), and an outgoing positive power connector (37) and an outgoing negative power connector (38) are installed in the middle of the rear panel of the high-voltage box body (2).

3. The AC / DC integrated energy storage high-voltage box structure according to claim 1, characterized in that: An EMS communication interface (13), a control power display light (16), and a power supply display light (17) are installed on one side of the front panel of the high-voltage box body (2); an air-conditioning power connection terminal (12), a fire power supply, an air-conditioning communication connection terminal (11), a slave control connection terminal (10), an emergency stop, 485 communication, and a fire feedback connection terminal (9), a dehumidifier power connection terminal (8), and a UPS power connection terminal (7) are installed on the front panel of the high-voltage box body (2); and a pre-charging group (31), an IO module (32), and a switching power supply module (33) are installed in the middle of the high-voltage box body (2).

4. The AC / DC integrated energy storage high-voltage box structure according to claim 1, characterized in that: An AC side power connection terminal (24), a three-phase electric meter (36), a lightning protection switch (35), and a PCS communication connection terminal (34) are installed in the middle of the rear panel of the high-voltage box body (2).

5. The AC / DC integrated energy storage high-voltage box structure according to claim 1, characterized in that: Two symmetrically distributed handles (3) are fixedly mounted on the front panel of the high-voltage box body (2).

6. The AC / DC integrated energy storage high-voltage box structure according to claim 1, characterized in that: A sealing strip (4) is fixedly mounted on the upper portion of the high-voltage box body (2), a high-voltage box top cover (1) is mounted on the upper portion of the high-voltage box body (2), and the high-voltage box top cover (1) and the sealing strip (4) are in contact with each other.

Images