Electrochemical energy storage device based on string type energy storage converter

Abstract

The utility model discloses an electrochemical energy storage device based on a string type energy storage converter, which comprises a cabinet body and an internal fixed frame body, and the fixed frame body is provided with a first wiring groove, a second wiring groove, a third wiring groove and a fourth wiring groove. A plurality of first installation spaces, second installation spaces and third installation spaces are sequentially arranged in the fixed frame body in the line laying direction, the first wiring groove is communicated with the first installation spaces and the third installation spaces, the third wiring groove and the second wiring groove are perpendicularly arranged and communicated with each other, and the fourth wiring groove is communicated with the third installation spaces. The fixed frame body is provided with a threading hole which is communicated with the third wiring groove and the fourth wiring groove. By designing the independent installation space and the wiring groove, independent layout of a direct current line, an alternating current line and a communication line is realized, so that electromagnetic interference on the communication line when the lines are crossed is reduced, and potential safety hazards and later maintenance difficulty of the lines are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrochemistry energy storage technical field, concretely is a kind of electrochemistry energy storage device based on group string energy storage converter. BACKGROUND

[0002] With the market demand of high-voltage large-power large-scale energy storage power station increasing, group string energy storage converter is more and more applied to electrochemistry energy storage industry. Energy storage converter array can realize the power of single group string energy storage converter multiplied, reach large-power large-capacity storage electric energy, form large-scale, integrated large industrial and commercial energy storage power station. But energy storage converter array produces greater challenge to centralized management of single group string energy storage converter, controller of centralized management not only needs to consider the interference of larger caliber, larger quantity primary power line to secondary communication line, also needs to consider communication rate and thermal effect under the working of numerous converters.

[0003] At present, when multiple group string energy storage converters are cascaded, there is cross layout phenomenon between AC side power line, DC side power line and secondary communication line, and there are problems of certain safety hazard and large electromagnetic interference. UTILITARY MODEL

[0004] Therefore, the utility model aims at providing a kind of electrochemistry energy storage device based on group string energy storage converter to solve the technical problems mentioned in prior art.

[0005] A kind of electrochemistry energy storage device based on group string energy storage converter, the electrochemistry energy storage device includes cabinet body, the cabinet body is internally provided with assembly unit, the assembly unit is composed of several fixed frame bodies side by side, the first wiring slot and the second wiring slot are respectively arranged at one end of each fixed frame body and located at opposite sides, the fixed frame body is sequentially provided with several first installation space, second installation space and third installation space along the direction of line layout, the first installation space is used to install communication module and AC-DC power module, the second installation space is used to install group string energy storage converter, the third installation space is used to install circuit breaker;

[0006] The first wiring slot is respectively communicated with the first installation space and the third installation space, and the first wiring slot is used to lay communication line;

[0007] Third wiring slot is arranged perpendicularly to the second wiring slot and communicated with each other in each second installation space of the fixed frame body, so that AC line is passed out from the first installation space and passed into the second installation space through the second wiring slot and the third wiring slot;

[0008] The outer periphery of the fixed frame body has a fourth wiring slot, which communicates with the third mounting space, and a plurality of threading holes are arranged in the fixed frame body in the fourth wiring slot, so that the DC line passes out of the second mounting space and passes through the third wiring slot, the threading hole and the fourth wiring slot into the third mounting space.

[0009] Optionally, a DC molded case circuit breaker cabin is arranged in the third mounting space, and the DC molded case circuit breaker cabin has a plurality of assembly parts, which are arranged one-to-one corresponding to the number of group string energy storage converters assembled with the second mounting space in the fixed frame body, to assemble a corresponding number of circuit breakers.

[0010] Each of the assembly parts is provided with four wiring holes.

[0011] Optionally, a wiring fixing member is arranged in the second wiring slot.

[0012] Optionally, a mounting cavity is arranged between the fixed frame body and the air inlet side of the cabinet, and the mounting cavity is used to accommodate the second wiring slot, the third wiring slot and the wiring fixing member.

[0013] Optionally, the fixed frame body is provided with a heat dissipation channel at least for one of the second mounting spaces, and the heat dissipation channel has air inlet and outlet windows arranged at opposite sides of the inner wall of the cabinet at both ends thereof.

[0014] Optionally, the air inlet window is a louvered baffle.

[0015] Optionally, the air outlet window is a polygonal heat dissipation baffle.

[0016] Optionally, the cabinet comprises:

[0017] a seat plate, which is detachably mounted at the bottom of the assembly unit;

[0018] a top plate, which is detachably mounted at the top of the assembly unit;

[0019] two groups of side plates, which are respectively detachably mounted at opposite sides of the assembly unit and are arranged in parallel with the ventilation direction of the heat dissipation channel;

[0020] a front cover plate, which is detachably mounted at the side of the assembly unit close to the air inlet of the heat dissipation channel, and the front cover plate has a plurality of first fixing slots arranged one-to-one corresponding to the air inlet window to fix the air inlet window;

[0021] A rear cover plate is detachably installed on the assembling unit near the air outlet side of the heat dissipation channel, and the rear cover plate has a plurality of second fixing grooves corresponding to the air outlet windows to fix the air outlet windows.

[0022] The utility model can produce beneficial effects, which include:

[0023] The electrochemical energy storage device based on the string type energy storage converter has independent installation space and wiring grooves, so that the DC line, AC line and communication line are independently laid, thereby reducing electromagnetic interference on the communication line when the lines cross, and reducing potential safety hazards and difficulty in later maintenance of the lines. At the same time, the single laying of the communication line helps the communication equipment to realize unified communication and control scheduling of multiple string type energy storage converters. In addition, the DC molded case circuit breaker cabin is designed to install circuit breakers, so that the electrochemical energy storage device has electrical protection, insulation protection and waterproof protection. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the electrochemical energy storage device of the utility model;

[0025] Figure 2 It is a structural schematic view of the electrochemical energy storage device of the utility model; Figure 1

[0026] Figure 3 It is a rear view of the utility model; Figure 1

[0027] Figure 4 It is a structural schematic view of the DC molded case circuit breaker cabin of the utility model; Figure 2

[0028] In the figure: 1, cabinet body, 101, seat plate, 102, top plate, 103, side plate, 104, front cover plate, 105, rear cover plate, 2, fixed frame, 3, first wiring groove, 4, second wiring groove, 5, first installation space, 6, second installation space, 7, third installation space, 8, third wiring groove, 9, fourth wiring groove, 10, threading hole, 11, DC molded case circuit breaker cabin, 12, assembling part, 13, wiring hole, 14, line fixing piece, 15, installation cavity, 16, heat dissipation channel, 17, air inlet window, 18, air outlet window. DETAILED DESCRIPTION

[0029] ​​​Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Please refer to Figure 2 The utility model provides a kind of electrochemical energy storage device based on group string energy storage converter, electrochemical energy storage device includes cabinet 1, cabinet 1 inside is provided with assembly unit, assembly unit is formed by several fixed frame 2 side by side, and the one end of each fixed frame 2 and located at opposite sides is provided with first wiring slot 3 and second wiring slot 4 respectively, several first installation space 5, second installation space 6 and third installation space 7 are sequentially provided in fixed frame 2 along the direction of line layout, first installation space 5 is used to install communication module and AC-DC power module, second installation space 6 is used to install group string energy storage converter, and third installation space 7 is used to install circuit breaker;Wherein, the two ends of first wiring slot 3 are communicated with first installation space 5 and third installation space 7 respectively, and first wiring slot 3 is used to lay communication line connection communication module and circuit breaker;Every second installation space 6 of fixed frame 2 is respectively configured with third wiring slot 8, third wiring slot 8 is vertically arranged with second wiring slot 4 and is interconnected, so that one end of AC line is connected into AC-DC power module, and the other end is out from first installation space 5 and passes through second wiring slot 4 and third wiring slot 8 and is connected into second installation space 6 and is connected with the AC port of group string energy storage converter;The outer periphery of fixed frame 2 has fourth wiring slot 9, and fourth wiring slot 9 is communicated with third installation space 7, and fixed frame 2 is located in third wiring slot 8 and is provided with several threading holes 10, and threading hole 10 penetrates fourth wiring slot 9, so that one end of DC line is connected into the DC port of group string energy storage converter, and the other end is out from second installation space 6 and passes through third wiring slot 8, threading hole 10 and fourth wiring slot 9 and is connected into third installation space 7 and is connected with the incoming line end of circuit breaker, to complete the independent layout of DC line, AC line and communication line, to reduce electromagnetic interference caused to communication line when line intersection, and reduce potential safety hazard and line later maintenance difficulty.

[0031] Further, as Figure 2 And Figure 4As shown, the third mounting space 7 is provided with a DC molded case circuit breaker cabin 11, which has a plurality of assembly parts 12 corresponding to the number of stringed energy storage converters assembled in the second mounting space 6 of the fixed frame 2, to assemble a corresponding number of circuit breakers; each assembly part 12 is provided with four wiring holes 13, which are convenient for guiding and fixing the incoming and outgoing lines of the circuit breakers, to separate the multiple lines and avoid the short circuit phenomenon of the joints.

[0032] Further, the second wiring slot 4 is provided with a line fixing part 14. In the embodiment, the line fixing part 14 adopts a line card, and a group of line cards is provided at every interval of a preset length, and the number of each group of line cards is set to three or four, which can be configured according to the wiring mode of three-phase three-wire or three-phase four-wire.

[0033] Further, as shown, Figure 2 The fixed frame 2 and the air inlet side of the cabinet 1 are provided with a mounting cavity 15, which is used to accommodate the second wiring slot 4, the third wiring slot 8 and the line fixing part 14; the layout space of the lines can be increased, which is conducive to improving the heat dissipation effect of the lines; at the same time, the mounting cavity 15 can separate the electronic components installed in the fixed frame 2 from the air inlet side of the cabinet 1, to improve the waterproof effect.

[0034] Further, the fixed frame 2 is provided with a heat dissipation channel 16 at least for one of the second mounting spaces 6, and the heat dissipation channel 16 has an air inlet window 17 and an air outlet window 18 respectively extending to the opposite sides of the inner wall of the cabinet 1 at both ends. Specifically, as shown, Figure 2 The heat dissipation channel 16 is designed below each of the second mounting spaces 6 on the fixed frame 2, and in order to improve the heat dissipation effect, the heat dissipation channel 16 can also be communicated with the second mounting space 6; and in order to avoid dust blowing into the heat dissipation channel 16, a filter screen can be installed at both ends to filter the dust carried in the air flowing through the heat dissipation channel 16. In the above, the air inlet window 17 is a louvered baffle; and the air outlet window 18 is a polygonal heat dissipation baffle. Specifically, the overall air duct of the cabinet is: the air flows through the louvered baffle after flowing through the stringed energy storage converter, and then flows out from the polygonal heat dissipation baffle. The air inlet of the horizontally arranged stringed energy storage converter adopts the same louvered baffle, wherein the design of the louvered baffle not only weakens the flow direction of the air in the cabinet after heat exchange, which can only flow to the air outlet window 18, but also plays a waterproof protection role at the alternating current power supply port and the direct current power supply port of the stringed energy storage converter.

[0035] Further, as shown, Figure 1As shown, in order to facilitate the installation of the line and the maintenance of the equipment, the cabinet body 1 can be designed as a split structure; Specifically, the cabinet body 1 includes a seat plate 101, a top plate 102, two groups of side plates 103, a front cover plate 104 and a rear cover plate 105, wherein the seat plate 101 is detachably installed at the bottom of the assembly unit; The top plate 102 is detachably installed at the top of the assembly unit; The two groups of side plates 103 are respectively detachably installed at the opposite sides of the assembly unit, and are arranged in parallel with the ventilation direction of the heat dissipation channel 16; The front cover plate 104 is detachably installed on the side of the assembly unit close to the air inlet of the heat dissipation channel 16, the front cover plate 104 has a plurality of first fixing grooves, and the first fixing grooves are arranged one by one with the air inlet window 17 to fix the air inlet window 17; The rear cover plate 105 is detachably installed on the side of the assembly unit close to the air outlet of the heat dissipation channel 16, the rear cover plate 105 has a plurality of second fixing grooves, and the second fixing grooves are arranged one by one with the air outlet window 18 to fix the air outlet window 18. In the above, the air inlet window 17 and the air outlet window 18 are designed as a detachable structure, such as a clamping or screw fixing installation method.

Claims

1. A group string-based electrochemical energy storage device based on energy storage converter, said electrochemical energy storage device comprising a cabinet (1), characterized in that, The cabinet body (1) is internally provided with an assembly unit, the assembly unit is composed of several fixed frames (2) arranged side by side, one end of each fixed frame (2) and located at opposite sides is respectively provided with a first wiring slot (3) and a second wiring slot (4), a plurality of first installation spaces (5), second installation spaces (6) and third installation spaces (7) are sequentially arranged in the fixed frame (2) along the line layout direction, the first installation space (5) is used for installing a communication module and an AC-DC power supply module, the second installation space (6) is used for installing a group string energy storage converter, and the third installation space (7) is used for installing a circuit breaker; Both ends of the first wiring slot (3) are respectively communicated with the first installation space (5) and the third installation space (7), and the first wiring slot (3) is used for laying a communication line; Each second installation space (6) of the fixed frame (2) is respectively provided with a third wiring slot (8), the third wiring slot (8) is vertically arranged with the second wiring slot (4) and is communicated with each other, so that the AC line passes out from the first installation space (5) and passes into the second installation space (6) through the second wiring slot (4) and the third wiring slot (8); The outer periphery of the fixed frame (2) has a fourth wiring slot (9), the fourth wiring slot (9) is communicated with the third installation space (7), a plurality of wire holes (10) are arranged in the fixed frame (2) in the third wiring slot (8), the wire holes (10) penetrate the fourth wiring slot (9), so that the DC line passes out from the second installation space (6) and passes into the third installation space (7) through the third wiring slot (8), the wire hole (10) and the fourth wiring slot (9).

2. The electrochemical energy storage device based on group string energy storage converter of claim 1, wherein, The third installation space (7) is provided with a DC molded case circuit breaker cabin (11), the DC molded case circuit breaker cabin (11) has a plurality of assembly parts (12), the assembly parts (12) are arranged one by one corresponding to the number of energy storage converters assembled with the second installation space (6) in the fixed frame (2), so as to assemble a corresponding number of circuit breakers; Each group of assembly parts (12) is provided with four wire holes (13).

3. The electrochemical energy storage device based on group string energy storage converter of claim 1, wherein, The second wiring slot (4) is provided with a line fixing part (14).

4. The electrochemical energy storage device based on group string energy storage converter of claim 3, wherein, The fixed frame (2) and the air inlet side of the cabinet body (1) are provided with an installation cavity (15), and the installation cavity (15) is used for accommodating the second wiring slot (4), the third wiring slot (8) and the line fixing part (14).

5. The electrochemical energy storage device based on group string energy storage converter of claim 1, wherein, At least one of the second installation spaces (6) of the fixed frame (2) is provided with a heat dissipation channel (16), and the heat dissipation channel (16) extends to the opposite sides of the inner wall of the cabinet body (1) at both ends to form an air inlet window (17) and an air outlet window (18).

6. The electrochemical energy storage device based on group string energy storage converter of claim 5, wherein, The air inlet window (17) is a louvered baffle.

7. The electrochemical energy storage device based on group string energy storage converter of claim 5, wherein, The air outlet window (18) is a polygonal heat dissipation baffle.

8. The electrochemical energy storage device based on group string energy storage converter of claim 5, wherein, The cabinet body (1) comprises: A seat plate (101) is detachably installed at the bottom of the assembly unit; A top plate (102) is detachably mounted on the top of the assembly unit; Two groups of side plates (103) are respectively detachably mounted on the opposite sides of the assembly unit and are arranged in parallel with the ventilation direction of the heat dissipation channel (16); A front cover plate (104) is detachably mounted on the side of the assembly unit close to the air inlet of the heat dissipation channel (16), and the front cover plate (104) has a plurality of first fixing grooves corresponding to the air inlet window (17) to fix the air inlet window (17); A rear cover plate (105) is detachably mounted on the side of the assembly unit close to the air outlet of the heat dissipation channel (16), and the rear cover plate (105) has a plurality of second fixing grooves corresponding to the air outlet window (18) to fix the air outlet window (18).

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