Alternating current and direct current integrated energy storage high-voltage box
By designing an AC/DC fusion energy storage high-voltage box and integrating DC and AC management functions, the problems of space occupation and assembly time of the energy storage high-voltage box are solved, AC/DC integrated management and real-time monitoring are realized, and energy utilization efficiency is optimized.
Patent Information
- Application Number
- CN202422740548.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Existing energy storage high-voltage boxes require a separate AC distribution box, which takes up space and increases assembly time, making it impossible to achieve integrated AC and DC management.
An AC/DC fusion energy storage high-voltage box is designed to integrate DC and AC management functions, including components such as incoming and outgoing line connectors, circuit breakers, contactors, sensors, current transformers, and electric energy meters to achieve integrated AC/DC monitoring and management.
The structure of the energy storage cabinet is simplified, which reduces space occupation and assembly time. At the same time, real-time monitoring and efficiency calculation are realized to optimize energy use.
Smart Images
Figure CN223427991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy storage high-voltage boxes, in particular to an AC / DC fusion energy storage high-voltage box. Background Art
[0002] The mainstream solution in current energy storage technology is to string lithium iron phosphate battery cells into modules and pack them into packages, then connect multiple battery packs in series to a high-voltage box, and then connect them to the energy storage inverter. The high-voltage box is an important component that connects the battery and the energy storage inverter. On the one hand, it is used for battery cluster management, and on the other hand, it is used for short-circuit and overcurrent protection.
[0003] Many existing energy storage high-voltage boxes only control and manage the DC portion of the energy storage cabinet, requiring the AC power supply to be introduced separately. In this case, a more common solution is to configure an AC distribution box for equipment power supply, communication control, and external signal access. The use of a distribution box not only takes up the limited space in the energy storage cabinet but also increases assembly time during the production process. Utility Model Content
[0004] In order to solve the problem of configuring an AC distribution box for power supply, communication control and external signal access of the equipment, the use of the distribution box not only occupies the limited space of the energy storage cabinet, but also increases the assembly time in the production process; the purpose of this utility model is to provide an AC / DC fusion energy storage high-voltage box.
[0005] To solve the above technical problems, the present invention adopts the following technical solutions: an AC / DC fusion energy storage high-voltage box, comprising a box body, a positive incoming line connector installed on one side of the front panel of the box body, a fuse installed on one side of the interior of the box body, a main positive contactor installed on one side of the fuse, pre-charging resistors and pre-charging contactors installed in parallel on both sides of the main positive contactor, a DC circuit breaker installed on one side of the interior of the box body, a DC circuit breaker connecting rod installed on one side of the DC circuit breaker, a positive copper busbar for the incoming line of the circuit breaker and a negative copper busbar for the incoming line of the circuit breaker installed on one side of the DC circuit breaker, and a positive copper busbar for the outgoing line of the circuit breaker and a negative copper busbar for the outgoing line of the circuit breaker installed on the other side of the DC circuit breaker;
[0006] An incoming line negative connector is installed on the side of the front panel of the box close to the incoming line positive connector, a main negative contactor is installed on the inner side of the box, a Hall sensor is installed on the side of the box close to the main negative contactor, an outgoing line positive connector and an outgoing line negative connector are installed in the middle of the rear panel of the box, a plurality of first AC wiring terminals are installed on the front panel of the box, a plurality of second AC wiring terminals are installed on the rear panel of the box, a plurality of AC copper busbars are installed on the opposite sides between the first AC wiring terminals and the second AC wiring terminals, wherein current transformers are nested in the middle of three of the AC copper busbars, and a three-phase electric energy meter is installed on one side of the rear panel of the box.
[0007] Preferably, a DC circuit breaker operating handle is installed in the middle of the front panel of the box, the end of the DC circuit breaker connecting rod away from the DC circuit breaker is installed in the middle of the DC circuit breaker operating handle, a miniature circuit breaker is installed in the middle of the front panel of the box, an AC lightning arrester is installed inside the box, a fuse fan is installed inside the side of the box close to the fuse, and a power indicator light is installed on the side of the front panel of the box close to the DC circuit breaker operating handle.
[0008] Compared with the prior art, the beneficial effects of the present invention are:
[0009] 1. This application can achieve effective monitoring and management of the DC part of the AC / DC integrated management of the AC / DC fusion energy storage high-voltage box, while integrating the AC auxiliary power supply required by the energy storage battery cabinet. This integrated design not only simplifies the structure, but also reduces the space required in the energy storage cabinet and the assembly time.
[0010] 2. This application can monitor and calculate the efficiency of AC / DC integrated energy storage high-voltage boxes in real time. By configuring current transformers, three-phase electricity meters and other monitoring equipment, it can monitor the AC output and input power, as well as the accumulation of forward and reverse electric energy in real time. These data provide important support for the calculation of equipment efficiency, which helps to optimize energy use and reduce energy waste. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0012] Figure 1 This is a schematic structural diagram of the utility model.
[0013] Figure 2 This is a front structural diagram of the utility model.
[0014] Figure 3 It is a schematic diagram of the back structure of the utility model.
[0015] Figure 4 For this utility model Figure 2 Schematic diagram of the AA cross-section structure.
[0016] Figure 5 This is a schematic diagram of the facade structure of the utility model.
[0017] In the figure: 1. Box; 2. Incoming positive connector; 3. Incoming negative connector; 4. DC circuit breaker operating handle; 5. Miniature circuit breaker; 6. First AC terminal; 7. Power indicator light; 8. Outgoing negative connector; 9. Second AC terminal; 10. Outgoing positive connector; 11. Three-phase energy meter; 12. AC lightning arrester; 13. Pre-charge resistor; 14. Pre-charge contactor; 15. Main positive contactor; 16. Fuse; 17. Main negative contactor; 18. Hall effect sensor; 19. DC circuit breaker connecting rod; 20. DC circuit breaker; 21. Current transformer; 22. AC busbar; 23. Fuse fan; 24. Incoming positive busbar; 25. Incoming negative busbar; 26. Outgoing positive busbar; 27. Outgoing negative busbar. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] Example: Figure 1-5 As shown, the utility model provides an AC / DC fusion energy storage high-voltage box, including a box body 1, a positive incoming line connector 2 is installed on one side of the front panel of the box body 1, a fuse 16 is installed on one side of the interior of the box body 1, a main positive contactor 15 is installed on one side of the fuse 16, a pre-charging resistor 13 and a pre-charging contactor 14 are installed in parallel on both sides of the main positive contactor 15, a DC circuit breaker 20 is installed on one side of the DC circuit breaker 20, a DC circuit breaker connecting rod 19 is installed on one side of the DC circuit breaker 20, a circuit breaker incoming line positive copper bar 24 and a circuit breaker incoming line negative copper bar 25 are installed on one side of the DC circuit breaker 20, and a circuit breaker outgoing line positive copper bar 26 and a circuit breaker outgoing line negative copper bar 27 are installed on the other side of the DC circuit breaker 20;
[0020] An incoming line negative connector 3 is installed on the side of the front panel of the box 1 close to the incoming line positive connector 2, a main negative contactor 17 is installed on the inner side of the box 1, and a Hall sensor 18 is installed on the side of the box 1 close to the main negative contactor 17. An outgoing line positive connector 10 and an outgoing line negative connector 8 are installed in the middle of the rear panel of the box 1. A plurality of first AC wiring terminals 6 are installed on the front panel of the box 1, and a plurality of second AC wiring terminals 9 are installed on the rear panel of the box 1. A plurality of AC copper busbars 22 are installed on the opposite sides between the first AC wiring terminals 6 and the second AC wiring terminals 9, wherein a current transformer 21 is nested in the middle of each of the three AC copper busbars 22, and a three-phase electric energy meter 11 is installed on one side of the rear panel of the box 1.
[0021] A DC circuit breaker operating handle 4 is installed in the middle of the front panel of the box body 1, and the end of the DC circuit breaker connecting rod 19 away from the DC circuit breaker 20 is installed in the middle of the DC circuit breaker operating handle 4. By setting the DC circuit breaker operating handle 4, it can be used to manually open and close the DC circuit.
[0022] A miniature circuit breaker 5 is installed in the middle of the front panel of the box 1, and an AC lightning arrester 12 is installed inside the box 1. By setting the miniature circuit breaker 5 and the AC lightning arrester 12, the miniature circuit breaker 5 can be used to switch the auxiliary power supply on and off, and the lead of the miniature circuit breaker 5 is connected to the AC lightning arrester 12 and used in conjunction with each other.
[0023] A fuse fan 23 is installed inside the box body 1 on one side close to the fuse 16. By setting the fuse fan 23, the fuse fan 23 is fixed near the fuse 16 through sheet metal fixings to ensure that the air outlet of the fuse fan 23 is facing the fuse 16, thereby cooling the fuse 16.
[0024] A power indicator light 7 is installed on one side of the front panel of the box body 1 close to the DC circuit breaker operating handle 4. By providing the power indicator light 7, the power-on status can be clearly displayed.
[0025] Working Principle: In actual use, the positive incoming line connector 2 is installed on the front panel of the box 1. Its tail is locked with the copper busbar by a nut. The end of the copper busbar is connected to one side of the fuse 16. The other side of the fuse 16 is connected to one end of the main positive contactor 15 through the copper busbar. The other end of the main positive contactor 15 is connected to the positive incoming line terminal of the DC circuit breaker 20 through the copper busbar.
[0026] The incoming negative connector 3 is installed on the front panel of the box 1. Its tail is locked to the copper busbar with a nut. The end of the copper busbar is connected to one end of the main negative contactor 17. The other end of the main negative contactor 17 is connected to the negative incoming terminal of the DC circuit breaker 20 via the copper busbar. The Hall sensor 18 is nested between the incoming negative connector 3 and the main negative contactor 17. The positive and negative outgoing terminals of the DC circuit breaker 20 are connected to the tails of the outgoing positive connector 10 and the outgoing negative connector 8 installed on the rear panel of the box 1 via the copper busbar and locked with a nut.
[0027] The first AC terminal 6 is connected to the user, and the second AC terminal 9 is connected to the PCS AC. The tail ends are connected through AC copper busbars 22, and they are one-to-one and do not cross each other. The front end of the AC copper busbars 22, that is, near the side of the first AC terminal 6, the three AC copper busbars 22 on the left side are nested with three current transformers 21. The lead wires of the current transformers 21 are connected to the three-phase electric energy meter 11 for AC current collection;
[0028] All four AC copper bars 22 between the tail of the first AC terminal 6 and the current transformer 21 have holes for lead wires to the incoming side of the miniature circuit breaker 5, and the outgoing side of the miniature circuit breaker 5 is led to the AC lightning arrester 12;
[0029] Holes are drilled on the first and fourth AC copper busbars 22 between the tail end of the second AC terminal 9 and the current transformer 21 to connect wires to the incoming line of the miniature circuit breaker 5. The outgoing line of the miniature circuit breaker 5 is connected to the power indicator light 7 and other devices requiring AC auxiliary power. Holes are drilled at any point on all four AC copper busbars 22 to connect wires to the three-phase power meter 11 for AC voltage collection.
[0030] 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 fusion energy storage high-voltage box, comprising a box body (1), characterized in that: A positive-pole connector (2) is installed on one side of the front panel of the box (1), a fuse (16) is installed on one side of the interior of the box (1), a main positive contactor (15) is installed on one side of the fuse (16), and a pre-charging resistor (13) and a pre-charging contactor (14) are installed in parallel on both sides of the main positive contactor (15), a DC circuit breaker (20) is installed on one side of the interior of the box (1), a DC circuit breaker connecting rod (19) is installed on one side of the DC circuit breaker (20), a circuit breaker inlet positive copper bar (24) and a circuit breaker inlet negative copper bar (25) are installed on one side of the DC circuit breaker (20), and a circuit breaker outlet positive copper bar (26) and a circuit breaker outlet negative copper bar (27) are installed on the other side of the DC circuit breaker (20); An incoming line negative connector (3) is installed on one side of the front panel of the box (1) close to the incoming line positive connector (2), a main negative contactor (17) is installed on one side of the interior of the box (1), a Hall sensor (18) is installed on one side of the box (1) close to the main negative contactor (17), an outgoing line positive connector (10) and an outgoing line negative connector (8) are installed in the middle of the rear panel of the box (1), a plurality of first AC wiring terminals (6) are installed on the front panel of the box (1), a plurality of second AC wiring terminals (9) are installed on the rear panel of the box (1), a plurality of AC copper busbars (22) are installed on the opposite sides between the first AC wiring terminals (6) and the second AC wiring terminals (9), wherein the middle parts of three of the AC copper busbars (22) are nested with current transformers (21), and a three-phase electric energy meter (11) is installed on one side of the rear panel of the box (1).
2. The AC / DC fusion energy storage high-voltage box according to claim 1, characterized in that: A DC circuit breaker operating handle (4) is installed in the middle of the front panel of the box body (1), and one end of the DC circuit breaker connecting rod (19) away from the DC circuit breaker (20) is installed in the middle of the DC circuit breaker operating handle (4).
3. The AC / DC fusion energy storage high-voltage box according to claim 1, characterized in that: A miniature circuit breaker (5) is installed in the middle of the front panel of the box (1), and an AC lightning arrester (12) is installed inside the box (1).
4. The AC / DC fusion energy storage high-voltage box according to claim 1, characterized in that: A fuse fan (23) is installed inside the box (1) on one side close to the fuse (16).
5. The AC / DC fusion energy storage high-voltage box according to claim 1, characterized in that: A power indicator light (7) is installed on one side of the front panel of the box (1) close to the DC circuit breaker operating handle (4).