CN218569574U - Stacking type integrated energy storage cabin - Google Patents

Abstract

The utility model relates to a stacked integrated energy storage cabin, which comprises two layers of prefabricated cabins stacked up and down; the prefabricated cabin on the upper layer is used for accommodating a boosting converter and a PCS; the lower prefabricated cabin is used for accommodating a plurality of battery cabinets; a through hole for the insulator string to pass through is formed between the two layers of prefabricated cabins which are stacked up and down; the direct current side of the PCS is connected with the copper bar through an insulator string, and the battery cabinets are connected with the copper bar through short cables; the prefabricated cabins are stacked up and down to reduce the floor area; the bottom of the PCS of the upper-layer prefabricated cabin is provided with a through hole, the bottom of the PCS is provided with a copper bar through an insulator string, and each group of battery cabinets are connected with the copper bar through short cables, so that the length of the cables can be effectively reduced, and the cost and the running loss are reduced; the cable has good running environment and can effectively reduce the failure rate.

Description

Stacking type integrated energy storage cabin

Technical Field

The utility model relates to a stack formula integration energy storage cabin belongs to energy storage power station technical field.

Background

The design of the existing energy storage power station is divided into two types, namely a station house type and a prefabricated cabin type, the energy storage building is required to be covered by the energy storage power station, the battery, the PCS and the boosting transformer are arranged in the energy storage building, and the battery, the PCS and the boosting transformer are directly installed on the field by adopting prefabricated cabin combination.

The design of the conventional prefabricated cabin type energy storage power station mainly adopts a design scheme of an independent battery cabin and an independent PCS cabin, and the scheme has the advantages that all equipment can be produced by respective manufacturers (the common battery, the PCS and the boosting transformer are not produced by one manufacturer), the field installation process requirement is low, but the defects that the occupied area of the equipment is large, and connecting cables among the equipment are more.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stack formula integration energy storage cabin to solve the problem that proposes in the above-mentioned background art.

The technical scheme of the utility model as follows:

a stacked integrated energy storage cabin comprises two layers of prefabricated cabins stacked up and down;

the prefabricated cabin on the upper layer is used for accommodating a boosting converter and a PCS;

the prefabricated cabin on the lower layer is used for accommodating a plurality of battery cabinets;

a through hole for passing through the insulator string is formed between the two layers of prefabricated cabins which are stacked up and down;

the direct current side of the PCS is connected with the copper bar through an insulator string, and the battery cabinets are connected with the copper bar through short cables.

Preferably, the high-voltage side of the boost converter adopts kV or kV, and the low-voltage side of the boost converter adopts ACV to be connected with PCS.

Preferably, the low-voltage side of the boost converter is switched by the ATS and then is connected to an alternating current power supply bus to supply power to the equipment in the cabin.

Preferably, the prefabricated cabin on the upper layer is also used for accommodating a gas fire extinguishing system, a distribution box, air cooling equipment and secondary equipment in a screen cabinet.

Preferably, the air cooling device is connected to the battery cabinet, the PCS and the boosting converter through pipelines, and an electric valve is installed at the tail end of each pipeline.

The utility model discloses following beneficial effect has:

the prefabricated cabins are stacked up and down to reduce the floor area;

the battery cabinet with larger weight is arranged on one layer of the integrated cabin body, and the PCS and the boosting transformer are arranged on two layers of the integrated cabin body, so that the requirement on the overall structural strength of the integrated cabin body is reduced;

the bottom of the PCS of the upper prefabricated cabin is provided with a through hole, the bottom of the PCS is provided with a copper bar through an insulator string, and each group of battery cabinets are connected with the copper bar through short cables, so that the length of the cables can be effectively reduced, and the cost and the running loss are reduced; the cable has good running environment and can effectively reduce the failure rate.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a plan view of the lower prefabricated cabin of the utility model;

FIG. 3 is a plan view of the upper prefabricated cabin of the utility model;

FIG. 4 is a schematic diagram of the wiring structure between the battery cabinet and the PCS of the present invention;

FIG. 5 is a main wiring diagram of the present invention;

FIG. 6 is a power supply system topology diagram of the present invention;

fig. 7 is a topological diagram of the heating and ventilation system of the present invention;

FIG. 8 is a plan view of a general arrangement of a prefabricated cabin type energy storage power station in a flat type;

FIG. 9 shows a layout scheme of a PCS (process control system) cabin of a prefabricated cabin type energy storage power station adopting a flat type;

FIG. 10 is a plan view of a layout scheme of battery compartments of a prefabricated cabin type energy storage power station in a tiled type;

fig. 11 is a schematic diagram of cable wiring of a prefabricated cabin type energy storage power station adopting a flat type.

The reference numbers in the figures denote:

100. prefabricating a cabin; 200. an insulator string; 300. copper bars are arranged; 400. a short cable; 500. PCS; 600. a battery cabinet; 700. a step-up converter.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Fig. 8-11 are schematic structural diagrams of a prefabricated cabin type energy storage power station adopting a flat type,

the design of the prior flat prefabricated cabin type energy storage power station has the following problems:

1. and the floor space is large by adopting a flat paving mode.

2. By adopting a tiling mode, the wiring between the battery cabin and the PCS cabin is more, the cable investment is larger, the loss is larger, the field construction time is longer, and the fault risk is larger.

3. By adopting a tiled mode rather than an integrated design scheme, a power supply system, a cooling system and the like cannot be shared, the first-stage investment is large, and the later-stage loss is also large.

The embodiment is as follows:

as shown in fig. 1-3, the prefabricated cabins 100 are stacked up and down to form an integrated two-layer structure;

first-layer prefabricated cabin 100: in consideration of fire safety, the weight of the battery cabinet 600 (generally, several times of the sum of the PCS and the boost converter 700), and the like, a plurality of sets of the battery cabinet 600 and the BMS control cabinet (a battery management system, generally configured by a battery manufacturer in a set for battery operation management) are arranged at the first layer;

second-tier prefabricated capsule 100: in order to fully utilize the whole space and consider the structural design scheme of the integrated cabin, the second layer of arrangement equipment is lighter, so that the boosting transformer 700, the PCS, the gas fire extinguishing system, the distribution box and the air cooling equipment are arranged on the second layer;

advantages over past solutions: the design of the independent cabin body in the past, block terminal, air-cooled equipment, gaseous fire extinguishing system etc. will be greater than the PCS of corresponding and add the total space size that steps up power converter 700 along with battery cabinet 600 complete set and set up at a cabin body, and consequently PCS and step up power converter 700 and battery cabinet 600 independent cabin body respectively in the past piles up unable make full use of space again, the utility model discloses a space of utilization top that the space arrangement scheme can be more abundant, before in block terminal, air-cooled equipment, gaseous fire extinguishing system that the battery arranged together move to the top and PCS and step up power converter 700 and arrange together for holistic area is littleer.

As shown in fig. 5, the wiring mode of the integrated energy storage cabin is shown, and the main wiring is consistent with the traditional wiring mode. The high-voltage side of the boost converter 700 adopts 35kV or 10kV, the low-voltage side of the boost converter 700 is connected with the PCS and adopts AC380V, the direct-current side of the PCS is connected with the battery cabinet 600, the maximum capacity of the PCS is 1500kVA at present, so that a plurality of PCS are connected with different battery cabinets 600 in an integrated energy storage cabin, the specific connection quantity is based on the actual application scene, and different connection quantities can be applied to the patent, so that the description is omitted.

As shown in fig. 4, traditional prefabricated cabin formula energy storage power station's battery cabin and PCS cabin all are according to the design of outside wiring, and the cable needs to be connected through outside cable channel, and it is longer to lead to the connection distance, the utility model discloses upper and lower two-layer prefabricated cabin 100 corresponds PCS bottom position and sets up the through-hole to set up copper bar 300 through insulator chain 200 in the PCS bottom, every group battery cabinet 600 is connected with copper bar 300 through short cable 400, can effectively reduce cable length reduce cost and running loss. Because PCS and step-up transformer 700 often share the cabin to install, therefore PCS and step-up transformer's integration wiring design has been comparatively ripe at present, the utility model discloses the unnecessary details;

advantages over past solutions: by adopting the scheme, the length of the cable is less than 1m, the length of a single cable can be saved by more than 5m compared with a common stacking mode, and the length of the single cable can be saved by more than 15m compared with a mode that the battery cabinet 600 and the PCS prefabricated cabin are separately arranged, so that the cost can be greatly saved, and the loss can be reduced. And the cable running environment is better, and the failure rate can be effectively reduced.

The electricity utilization integrated scheme in the cabin is as follows:

the cabin consumer includes: BMS, air cooling equipment, equipment in a secondary screen cabinet, a PCS controller and the like, wherein the equipment can be supplied with power by adopting alternating current 380V/220V;

the current general design scheme is that an alternating current distribution box is arranged in a prefabricated cabin, then an alternating current power supply is led from a station power utilization system in a station area to supply power to equipment in the cabin, and the prefabricated cabins 100 on the upper side and the lower side are respectively provided with independent distribution boxes;

the utility model discloses scheme make full use of integration advantage in integration energy storage cabin adopts alternating current power supply oneself to supply, the closed-loop operation of oneself. The topological diagram is shown in FIG. 6;

the power supply of the integrated energy storage cabin power supply is supplied by the low-voltage side of the boosting transformer 700 in the upper prefabricated cabin 100, the low-voltage side is connected with two paths of power supplies, and the two paths of power supplies are switched by ATS and then are connected to an alternating current power supply bus to supply power to equipment in the cabin. In order to meet the requirement of electric energy calculation of electric equipment in a cabin, an independent watt-hour meter is arranged in an alternating current distribution box.

Advantages over past solutions: by adopting the method, two paths of power cables of the AC power supply outside the cabin can be saved, the wiring amount inside and outside the cabin is reduced, the investment is saved, and meanwhile, the fire occurrence points are reduced. Meanwhile, the scheme makes full use of the battery cabinet 600 as a standby power supply, so that a reliable alternating current power supply can be continuously provided for the equipment in the cabin when the power grid loses power, and the reliability of the system is enhanced.

The heating and ventilation integrated scheme in the cabin is as follows:

as shown in fig. 7, the equipment requiring heat dissipation in the cabin includes a battery cabinet 600, a PCS, and a boost converter 700, and in the past, because the cabin is designed independently, the heat dissipation systems of the three are also designed independently, the initial investment cost is high, and the later operation efficiency is low.

The utility model discloses a warm system of leading to of integration sets up forced air cooling equipment in two layers of prefabricated cabin 100, and forced air cooling equipment passes through the pipeline and inserts battery cabinet 600, PCS and the power converter 700 that steps up, sets up the air-cooled circulation of motorised valve control at the pipeline end. The air cooling equipment collects temperature information of each cooling equipment for calculating self-cooling power;

advantages over past solutions: because the utility model discloses a cooling system integrated design can be realized to the design of the integrated cabin body, compares in independent design in the past, has saved cooling system's cost, has also improved later stage refrigerated efficiency simultaneously.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims (5)

1. The utility model provides a stack formula integration energy storage cabin which characterized in that: comprises two layers of prefabricated cabins (100) which are stacked up and down;

the prefabricated cabin (100) on the upper layer is used for accommodating a boosting converter (700) and a PCS (500);

the prefabricated cabin (100) at the lower layer is used for accommodating a plurality of battery cabinets (600);

a through hole for the insulator string (200) to pass through is formed between the two layers of prefabricated cabins (100) which are stacked up and down;

the direct current side of the PCS (500) is connected with the copper bar (300) through an insulator string (200), and the battery cabinets (600) are connected with the copper bar (300) through short cables (400).

2. A stacked, integrated energy storage module according to claim 1, wherein: the high-voltage side of the boosting transformer adopts 35kV or 10kV, and the low-voltage side of the boosting transformer adopts AC380V to be connected with the PCS.

3. A stacked integrated energy storage tank according to claim 2, wherein: and the low-voltage side of the boosting transformer is switched by ATS and then is connected to an alternating current power supply bus to supply power to equipment in the cabin.

4. A stacked, integrated energy storage module according to claim 1, wherein: the prefabricated cabin (100) on the upper layer is also used for accommodating a gas fire extinguishing system, a distribution box, air cooling equipment and secondary equipment in a screen cabinet.

5. A stacked integrated energy storage compartment according to claim 4, wherein: the air cooling equipment is connected into the battery cabinet (600), the PCS (500) and the boosting converter (700) through pipelines, and an electric valve is installed at the tail end of each pipeline.

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