CN215185450U - energy storage container - Google Patents

Abstract

The utility model discloses an energy storage container, which comprises a box body, a converter and booster device, a control cabinet, a low-voltage power distribution box and a manhole integrated in the box body; wherein, the converter and booster device has The first energy storage converter, the second energy storage converter, the third energy storage converter, the fourth energy storage converter, the double-winding transformer and the load switch combined electrical appliance; the box is separated by a partition wall The first and second cabins are side by side; the control cabinet, the first energy storage converter and the second energy storage converter are placed on the rear side of the first cabin from left to right; the low-voltage distribution box, the third energy storage The converter and the fourth energy storage converter are placed on the front side of the first cabin from left to right; the manhole is located in the middle passage extending in the left and right direction of the first cabin; the double-winding transformer and the load switch combination are placed from the left To the right are placed in the second cabin in turn. The devices in the box of the utility model are arranged in a compact and reasonable manner, the size and floor space of the container box are effectively shortened, and the cost is low.

Description

energy storage container

technical field

The utility model relates to an energy storage container.

Background technique

The existing converter and booster container includes a variety of equipment such as multiple energy storage converters, double-split or multi-split transformers, low-voltage switch cabinets, high-voltage mid-mounted cabinets, and outlet cabinets. There are 3 cabins, namely PCS cabin, transformer cabin and switch cabinet cabin. The overall size of the container is too large, and the main circuit adopts the scheme of double-split or multi-split transformer plus switch cabinet, which is costly.

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an energy storage container, in which the devices in the box are arranged in a compact and reasonable manner, the size and floor space of the container body are effectively shortened, and the cost is low.

In order to solve the above technical problems, the technical solution of the present utility model is: an energy storage container, which includes a box body and a converter and booster device, a control cabinet, a low-voltage distribution box and a manhole integrated in the box body; wherein ,

The converter and booster device has a first energy storage converter, a second energy storage converter, a third energy storage converter, a fourth energy storage converter, a double-winding transformer and a load switch combination;

The inside of the box is divided into a left and right side-by-side cabin and a second cabin by a partition wall;

The control cabinet, the first energy storage converter and the second energy storage converter are placed on the rear side of a cabin from left to right;

The low-voltage distribution box, the third energy storage converter and the fourth energy storage converter are placed on the front side of a cabin from left to right;

The manhole is located in the middle passage extending in the left-right direction of the cabin;

The double-winding transformer and load switch combination appliances are placed in the second compartment from left to right.

Further, in order to shorten the distance from the AC side cable port to the low-voltage side of the double-winding transformer to reduce the cost of power cables or copper busbars, the AC side cable port of the first energy storage converter is connected to the AC side of the third energy storage converter. The side cable ports are arranged oppositely; the AC side cable ports of the second energy storage converter are arranged opposite to the AC side cable ports of the fourth energy storage converter.

Further, in order to facilitate the installation and maintenance of each device, there are two installation and maintenance doors on the front side and the rear side of the first cabin, and an escape door on the left side of the first cabin. The second cabin is facing the double-winding transformer. There is an installation and maintenance door at the position of the combined electrical appliance and the load switch, and the manhole is adjacent to the escape door.

Further, the output ends of the first energy storage converter, the second energy storage converter, the third energy storage converter and the fourth energy storage converter are connected in parallel to the low-voltage side of the dual-winding transformer, and the dual-winding transformer The high-voltage side of the winding transformer is connected to the bus side of the booster station through the load switch combination.

A specific structure of a load switch combination electrical appliance is further provided, the load switch combined electrical appliance includes a load switch and a fuse; wherein,

The load switch includes an input terminal, a vacuum arc extinguishing device, an isolation switch, an output terminal and a ground switch;

One end of the fuse is electrically connected to the input end of the load switch, and the other end is electrically connected to the vacuum arc extinguishing device.

Further, in order to make the whole circuit lightning-proof, and in order to clearly know whether the whole circuit is running with electricity, the load switch combination electrical appliance also includes a lightning arrester and a energized display; wherein,

One end of the arrester is electrically connected to the output end of the load switch, and the other end is grounded;

One end of the charged display is connected to the output end of the load switch through a capacitor, and the other end is grounded.

Further, the capacities of the first energy storage converter, the second energy storage converter, the third energy storage converter and the fourth energy storage converter are equal.

Further, the DC input end of the first energy storage converter is used for being electrically connected with the output end of the first battery stack;

The DC input end of the second energy storage converter is used for being electrically connected with the output end of the second battery stack;

The DC input end of the third energy storage converter is used for being electrically connected with the output end of the third battery stack;

The DC input end of the fourth energy storage converter is used for being electrically connected with the output end of the fourth battery stack;

The voltages of the first cell stack, the second cell stack, the third cell stack and the fourth cell stack are equal.

After adopting the above-mentioned technical scheme, the utility model has the following beneficial effects:

1. The arrangement of the devices in the box is compact and reasonable, which effectively shortens the box size and floor area of the container. A double-winding transformer is used to replace a double-split or multi-split transformer, and a load switch combination is used instead. High-voltage central cabinets and outgoing cabinets greatly reduce equipment costs;

2. The AC side cable ports of the first energy storage converter and the third energy storage converter in the present invention are arranged opposite to each other, and the AC side cable ports of the second energy storage converter and the fourth energy storage converter are arranged oppositely. Relatively arranged, the distance from the AC side cable port to the low-voltage side of the double-winding transformer is shortened, which reduces the cost of power cables or copper busbars.

Description of drawings

Fig. 1 is the structural representation of the energy storage container of the present invention;

Fig. 2 is the principle block diagram of the converter and booster of the utility model;

FIG. 3 is a schematic circuit diagram of the converter and booster device of the present invention.

Detailed ways

In order to make the content of the present utility model easier to understand clearly, the present utility model will be described in further detail below according to specific embodiments and in conjunction with the accompanying drawings.

As shown in Figures 1, 2, and 3, an energy storage container includes a box body 1, a converter and booster device integrated in the box body 1, a control cabinet 2, a low-voltage distribution box 3 and a manhole 4 ;in,

The converter and booster device has a first energy storage converter 51, a second energy storage converter 52, a third energy storage converter 53, a fourth energy storage converter 54, a double-winding transformer 6 and a load switch combination electrical appliance 7;

The box body 1 is divided into a left and right side-by-side cabin 11 and a second cabin 12 by the partition wall 8;

The control cabinet 2, the first energy storage converter 51 and the second energy storage converter 52 are placed on the rear side of the first cabin 11 from left to right;

The low-voltage distribution box 3, the third energy storage converter 53 and the fourth energy storage converter 54 are placed on the front side of the first cabin 11 from left to right;

The manhole 4 is located in the middle passage extending in the left-right direction of the cabin 11;

The double-winding transformer 6 and the load switch combination appliance 7 are placed in the second cabin 12 from left to right.

In this embodiment, the low-voltage distribution box 3 is used for lighting, sockets, and heat dissipation of the box 1, and the manhole 4 is used for the maintenance of the converter and booster device.

Specifically, the arrangement of the components in the box body 1 is compact and reasonable, which effectively shortens the size and floor space of the box body 1 of the container. A double-winding transformer 6 is used instead of a double-split or multi-split transformer. The load switch combination appliance 7 replaces the high-voltage central cabinet and the outlet cabinet, which greatly reduces the equipment cost.

As shown in FIG. 1 , in order to shorten the distance from the AC side cable port to the low-voltage side 61 of the double-winding transformer 6 to reduce the cost of power cables or copper busbars, the AC side cable port of the first energy storage converter 51 is connected to the second The AC side cable ports of the three energy storage converters 53 are oppositely arranged;

The AC side cable port of the second energy storage converter 52 is arranged opposite to the AC side cable port of the fourth energy storage converter 54 .

As shown in FIG. 1 , in order to facilitate the installation and maintenance of various components, there are two installation and maintenance doors 13 on the front side and the rear side of the first cabin 11, and an escape door 14 is arranged on the left side of the first cabin 11, so An installation and maintenance door 13 is respectively provided at the position of the second cabin 12 facing the double-winding transformer 6 and the load switch combination electrical appliance 7 , and the manhole 4 is adjacent to the escape door 14 .

As shown in FIGS. 1 , 2 and 3 , the output ends of the first energy storage converter 51 , the second energy storage converter 52 , the third energy storage converter 53 and the fourth energy storage converter 54 Connected in parallel to the low-voltage side 61 of the double-winding transformer 6 , the high-voltage side 62 of the double-winding transformer 6 is connected to the bus side of the booster station through the load switch combination electrical appliance 7 .

As shown in FIGS. 2 and 3 , the DC input end of the first energy storage converter 51 is used for electrical connection with the output end of the first battery stack 91 ;

The DC input terminal of the second energy storage converter 52 is used for being electrically connected to the output terminal of the second battery stack 92;

The DC input end of the third energy storage converter 53 is used for electrical connection with the output end of the third battery stack 93;

The DC input end of the fourth energy storage converter 54 is used for being electrically connected with the output end of the fourth battery stack 94;

The voltages of the first cell stack 91, the second cell stack 92, the third cell stack 93, and the fourth cell stack 94 are equal.

Specifically, the first battery stack 91 is electrically connected to the DC side of the first energy storage converter 51 for outputting the first DC voltage to the first energy storage converter 51 , and the second battery stack 92 is electrically connected to the second energy storage converter 51 . The DC side of the converter 52 is used for outputting the second DC voltage to the second energy storage converter 52, and the third battery stack 93 is electrically connected to the DC side of the third energy storage converter 53 for outputting the third DC voltage to the second energy storage converter 52. The three energy storage converters 53 and the fourth battery stack 94 are electrically connected to the DC side of the fourth energy storage converter 54 for outputting a fourth DC voltage to the fourth energy storage converter 54 , wherein the first energy storage converter The capacity of the converter 51, the second energy storage converter 52, the third energy storage converter 53 and the fourth energy storage converter 54 are the same, and the first DC voltage, the second DC voltage, the third DC voltage and the third DC voltage are the same. The voltages of the four DC voltages are equal. The first energy storage converter 51 is used for converting the first DC voltage into a first AC voltage, the second energy storage converter 52 is used for converting the second DC voltage into a second AC voltage, and the third energy storage converter 52 is used for converting the second DC voltage into a second AC voltage. The energy storage converter 53 is used for converting the third DC voltage into a third AC voltage, the fourth energy storage converter 54 is used for converting the fourth DC voltage into a fourth AC voltage, and the double-winding transformer 6 It is used to boost the first AC voltage, the second AC voltage, the third AC voltage and the fourth AC voltage to a fifth AC voltage, and the load switch combination 7 is used to convert the fifth AC voltage. The AC voltage is supplied to the bus side of the booster station.

In this embodiment, the first battery stack, the second battery stack, the third battery stack and the fourth battery stack are all 630kWh battery stacks, the first energy storage converter, the second energy storage converter, the third energy storage converter The energy converter and the fourth energy storage converter are both 630kW energy storage converters, the first DC voltage, the second DC voltage, the third DC voltage and the fourth DC voltage are all 691V, the first AC voltage, the third DC voltage and the fourth DC voltage are all 691V. The second AC voltage, the third AC voltage and the fourth AC voltage are 380V, the fifth AC voltage is 35kV, and the bus side of the booster station is the bus side of the 35kV booster station.

As shown in FIG. 3 , the load switch combination 7 includes a load switch 71 and a fuse 72; wherein,

The load switch 71 includes an input terminal, a vacuum arc extinguishing device, an isolation switch, an output terminal and a ground switch;

One end of the fuse 72 is electrically connected to the input end of the load switch 71 , and the other end is electrically connected to the vacuum arc extinguishing device.

In this embodiment, the fuse 72 and the load switch 71 play the role of protecting the double-winding transformer 6. When the current in the circuit is higher than the rated capacity of the double-winding transformer 6 at a specified rate, the load switch 71 is opened and the circuit is disconnected. At this time, it plays the role of overload protection. When the double-winding transformer 6 is short-circuited, the fuse 72 is blown, and the circuit is disconnected, which plays the role of short-circuit protection at this time.

As shown in FIG. 3 , in order to protect the entire circuit from lightning, and to clearly know whether the entire circuit has an operating voltage, the load switch combination appliance 7 further includes a lightning arrester 73 and a live display 74; wherein,

One end of the arrester 73 is electrically connected to the output end of the load switch 71, and the other end is grounded;

One end of the charged display 74 is connected to the output end of the load switch 71 through a capacitor, and the other end is grounded.

In this embodiment, the arrester 73 is used for lightning protection of the entire circuit, and the electrified display 74 is used to indicate whether the circuit has an operating voltage. When the circuit has an operating voltage, the electrified display 74 will light up. Display 74 is not illuminated.

The specific embodiments described above further describe in detail the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention, and are not intended to be used for To limit the present utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

In the description of the present invention, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that The device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that is usually placed when the utility model product is used, only for the convenience of describing the present utility model and simplifying the description, not Indicates or implies that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhanging" etc. do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the present invention, unless otherwise expressly specified and limited, the first feature above or below the second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact Rather, they are contacted by additional features between them. Also, the first feature being above, above and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is below, below and below the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature level is smaller than the second feature.

Claims (8)

1. An energy storage container is characterized in that,

the device comprises a box body (1), and a variable-current boosting device, a control cabinet (2), a low-voltage distribution box (3) and a manhole (4) which are integrated in the box body (1); wherein,

the converter-booster device is provided with a first energy storage converter (51), a second energy storage converter (52), a third energy storage converter (53), a fourth energy storage converter (54), a double-winding transformer (6) and a load switch combined electrical appliance (7);

the box body (1) is internally divided into a first cabin (11) and a second cabin (12) which are parallel left and right by a partition wall body (8);

the control cabinet (2), the first energy storage converter (51) and the second energy storage converter (52) are sequentially arranged on the rear side of the cabin (11) from left to right;

the low-voltage distribution box (3), the third energy storage converter (53) and the fourth energy storage converter (54) are sequentially arranged on the front side of the first cabin (11) from left to right;

the manhole (4) is positioned in a middle passage of a cabin (11) extending in the left-right direction;

the double-winding transformer (6) and the load switch combined electrical appliance (7) are sequentially arranged in the two cabins (12) from left to right.

2. Energy storage container according to claim 1,

an alternating current side cable port of the first energy storage converter (51) is opposite to an alternating current side cable port of the third energy storage converter (53);

and an alternating current side cable port of the second energy storage converter (52) is opposite to an alternating current side cable port of the fourth energy storage converter (54).

3. Energy storage container according to claim 1,

the front side and the rear side of one cabin (11) respectively have two installation maintenance doors (13), the left side in one cabin (11) is equipped with one and flees door (14), just respectively be equipped with one installation maintenance door (13) to the position of bifilar transformer (6) and load switch combined electrical apparatus (7) in two cabins (12), manhole (4) are close to flee door (14).

4. Energy storage container according to claim 1,

the output ends of the first energy storage converter (51), the second energy storage converter (52), the third energy storage converter (53) and the fourth energy storage converter (54) are connected in parallel to the low-voltage side (61) of the double-winding transformer (6), and the high-voltage side (62) of the double-winding transformer (6) is connected with the bus side of the booster station through the load switch combined electrical apparatus (7).

5. Energy storage container according to claim 4,

the load switch combined electrical appliance (7) comprises a load switch (71) and a fuse (72); wherein,

the load switch (71) comprises an input end, a vacuum arc-extinguishing device, an isolation switch, an output end and a grounding switch;

one end of the fuse (72) is electrically connected with the input end of the load switch (71), and the other end of the fuse is electrically connected with the vacuum arc-extinguishing device.

6. Energy storage container according to claim 5,

the load switch combined electrical appliance (7) also comprises a lightning arrester (73) and a live display (74); wherein,

one end of the lightning arrester (73) is electrically connected with the output end of the load switch (71), and the other end of the lightning arrester is grounded;

one end of the charged display (74) is connected with the output end of the load switch (71) through a capacitor, and the other end of the charged display is grounded.

7. Energy storage container according to claim 4,

the first energy storage converter (51), the second energy storage converter (52), the third energy storage converter (53) and the fourth energy storage converter (54) are equal in capacity.

8. Energy storage container according to claim 4,

the direct current input end of the first energy storage converter (51) is used for being electrically connected with the output end of the first battery stack (91);

the direct current input end of the second energy storage converter (52) is used for being electrically connected with the output end of the second battery stack (92);

the direct current input end of the third energy storage converter (53) is used for being electrically connected with the output end of the third battery stack (93);

the direct current input end of the fourth energy storage converter (54) is used for being electrically connected with the output end of the fourth battery stack (94);

the voltages of the first cell stack (91), the second cell stack (92), the third cell stack (93) and the fourth cell stack (94) are equal.

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