Distributed energy storage cabinet control box

Abstract

The utility model discloses a distributed energy storage cabinet control box which comprises a box body, a first binding post and a third binding post are installed on the two sides of the front face of the box body, a second binding post and a fourth binding post are installed on the two sides of the back face of the box body, heat dissipation holes are formed in the two sides of the box body, and a heat dissipation fan and a V power supply module are installed in the box body. An alternating-current power distribution system, a direct-current power distribution system and a control system are also arranged in the box body; according to the distributed energy storage cabinet control box, the alternating-current power distribution system, the direct-current power distribution system and the control system are highly integrated together in the box body, so that the problem of reasonable installation and arrangement of components is solved, and meanwhile, the power distribution, metering and control requirements of a distributed energy storage system can be met; according to the cooling fan of the distributed energy storage cabinet control box, the connecting plate with high toughness is arranged, a certain damping effect can be achieved when the fan body operates, and therefore noise generated when the cooling fan operates is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage control box technical field, concretely is a kind of distributed energy storage cabinet control box. BACKGROUND

[0002] Distributed energy storage system plays an irreplaceable role in power generation side, power transmission and distribution side and user side, has wide application scenarios, and is one of important means to solve renewable energy grid-connected consumption, and existing distributed energy storage system usually needs to consider how to reasonably install and arrange various different system components such as AC power distribution, DC power distribution and control, otherwise it is easy to cause waste of internal space of energy storage system. Because the sizes and functions of various components are different, efficient integration cannot be achieved, so that the structure of the entire energy storage system is complex.

[0003] Therefore, a distributed energy storage cabinet control box is designed here. CONTENT OF UTILITY MODEL

[0004] The utility model aims at the deficiencies of prior art, provides a kind of distributed energy storage cabinet control box to solve the problems raised in background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of distributed energy storage cabinet control box, including box, the front of the box is equipped with first binding post and third binding post, the back of the box is equipped with second binding post and fourth binding post, the both sides of the box are provided with heat dissipation hole, the inside of the box is equipped with heat dissipation fan and 24V power module, the inside of the box is also provided with AC power distribution system, DC power distribution system and control system;

[0006] The AC power distribution system includes AC incoming line circuit breaker, current transformer, surge protector, miniature circuit breaker and meter, the meter is installed on the front of the box, the surge protector is installed on the back of the box, the miniature circuit breaker is installed on the front and back of the box, the AC incoming line circuit breaker and the current transformer are installed in the inside of the box, the AC incoming line circuit breaker is connected between first binding post and second binding post by wire, and the wire passes through current transformer;

[0007] The DC power distribution system includes DC circuit breaker, positive pole branch and negative pole branch, the DC circuit breaker, positive pole branch and negative pole branch are installed in the inside of the box, the positive pole branch is connected between third binding post and fourth binding post by wire, the DC circuit breaker is connected in series with the positive pole branch, and the negative pole branch is connected in parallel at both ends of the positive pole branch;

[0008] The control system includes EMS energy management control system and BMS battery management system, and the EMS energy management control system is installed on the back of the box, and the BMS battery management system is installed in the inside of the box.

[0009] Preferably, the positive electrode branch includes a fuse and a positive electrode contactor, the fuse and the positive electrode contactor are connected in series with each other, and the positive electrode contactor is connected in parallel with a pre-charge circuit at two ends.

[0010] Preferably, the negative electrode branch includes a shunt and a negative electrode contactor, the shunt and the negative electrode contactor are connected in series with each other.

[0011] Preferably, the pre-charge circuit includes a pre-charge contactor and a pre-charge resistor, the pre-charge contactor and the pre-charge resistor are connected in series with each other.

[0012] Preferably, the heat dissipation fan includes a fan body, mounting columns, connecting plates and rubber gaskets, four mounting columns in a rectangular array are arranged around the shell of the fan body, the four mounting columns and the shell of the fan body are connected through two connecting plates, the bottom of each of the four mounting columns is glued with a rubber gasket, and the four mounting columns are fixed on the box body through screws.

[0013] Compared with the prior art, the utility model provides a kind of distributed energy storage cabinet control box, with following beneficial effects:

[0014] The distributed energy storage cabinet control box, by being integrated together in cabinet with alternating current distribution system, direct current distribution system, control system, solve the reasonable installation arrangement problem of component, can also realize the distribution of distributed energy storage system, metering and control demand, the heat dissipation fan of the distributed energy storage cabinet control box is provided with high toughness connecting plate, can play certain damping effect when fan body operates, to reduce the noise generated when heat dissipation fan operates. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the front structure schematic diagram of the utility model;

[0017] Figure 3 It is the back structure schematic diagram of the utility model;

[0018] Figure 4 It is the side structure schematic diagram of the utility model;

[0019] Figure 5 It is the heat dissipation fan structure schematic diagram of the utility model.

[0020] Reference signs: 1, AC incoming line circuit breaker; 2, DC circuit breaker; 3, cooling fan; 31, fan body; 32, mounting column; 33, connecting plate; 34, rubber gasket; 4, current transformer; 5, surge protector; 6, miniature circuit breaker; 7, EMS energy management control system; 8, 24V power module; 9, BMS battery management system; 10, meter; 11, fuse; 12, pre-charge contactor; 13, shunt; 14, positive contactor; 15, pre-charge resistor; 16, negative contactor; 17, box; 18, first terminal post; 19, second terminal post; 20, third terminal post; 21, fourth terminal post; 22, cooling hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-5 In the embodiment, a distributed energy storage cabinet control box comprises a box 17, first and third terminal posts 18 and 20 are installed on the front of the box 17, second and fourth terminal posts 19 and 21 are installed on the back of the box 17, cooling holes 22 are arranged on the two sides of the box 17, a cooling fan 3 and a 24V power module 8 are installed in the box 17, the cooling fan 3 and the cooling holes 22 can ventilate and cool the whole control box, an AC power distribution system, a DC power distribution system and a control system are further arranged in the box 17.

[0023] The AC power distribution system comprises an AC incoming line circuit breaker 1, a current transformer 4, a surge protector 5, a miniature circuit breaker 6 and a meter 10, the meter 10 is installed on the front of the box 17, the surge protector 5 is installed on the back of the box 17, the surge protector 5 is used for protecting the energy storage system from the surge impact caused by external lightning, the miniature circuit breaker 6 is installed on the front and back of the box 17, the miniature circuit breaker 6 is used for controlling the power supply of the secondary equipment of the energy storage system, the AC incoming line circuit breaker 1 and the current transformer 4 are installed in the box 17, the AC incoming line circuit breaker 1 is connected between the first and second terminal posts 18 and 19 through wires, the AC incoming line circuit breaker 1 is used for controlling the connection and disconnection of the power grid and the system, the wires pass through the current transformer 4, and the current transformer 4 and the meter 10 are mainly used for measuring the charging and discharging power of the distributed energy storage system.

[0024] The direct current distribution system comprises a direct current circuit breaker 2, a positive pole branch, and a negative pole branch, the direct current circuit breaker 2, the positive pole branch, and the negative pole branch are installed in the inside of the box body 17, the positive pole branch is connected between the third terminal post 20 and the fourth terminal post 21 through a wire, the direct current circuit breaker 2 is connected in series with the positive pole branch, the direct current circuit breaker 2 is used for controlling the connection and disconnection of the battery and the system, the negative pole branch is connected in parallel at both ends of the positive pole branch, the positive pole branch comprises a fuse 11 and a positive pole contactor 14, the fuse 11 and the positive pole contactor 14 are connected in series with each other, pre-charging circuits are connected in parallel at both ends of the positive pole contactor 14, the negative pole branch comprises a shunt 13 and a negative pole contactor 16, the shunt 13 and the negative pole contactor 16 are connected in series with each other, the pre-charging circuits comprise a pre-charging contactor 12 and a pre-charging resistor 15, the pre-charging contactor 12 and the pre-charging resistor 15 are connected in series with each other, the front surface of the box body 17 is provided with a circuit breaker containing hole for exposing the operating handle of the circuit breaker outside the box body 17;

[0025] The control system comprises an EMS energy management control system 7 and a BMS battery management system 9, the EMS energy management control system 7 is installed on the back surface of the box body 17, and the BMS battery management system 9 is installed in the inside of the box body 17, the EMS energy management control system 7 is used for realizing omnibearing data acquisition, processing, display, control and the like of all battery clusters, battery stacks, converters PCS, electric meters and the like in the energy storage, the BMS battery management system 9 can measure single cell voltage and temperature, measure battery pack terminal voltage and current and the like, can display and report alarm information when overvoltage, undervoltage, overcurrent, high temperature, low temperature, communication abnormality, BMS abnormality and the like occur in the battery system operation, and can realize rapid cutting off of the battery circuit, thereby ensuring safe, reliable and stable operation of the battery, guaranteeing the service life requirement of the single cell battery and meeting the operation optimization control requirement of the single cell battery and the battery pack.

[0026] Please refer to Figure 5 The heat dissipation fan 3 comprises a fan main body 31, mounting columns 32, connecting plates 33 and rubber gaskets 34, four mounting columns 32 in a rectangular array are arranged around the shell of the fan main body 31, the four mounting columns 32 and the shell of the fan main body 31 are connected through two connecting plates 33, the connecting plates 33 are made of PETG plates or other high toughness plates, the connecting plates 33 play a certain damping role, thereby reducing the vibration noise generated when the fan main body 31 operates, the bottom of each of the four mounting columns 32 is adhered with a rubber gasket 34 through glue, and the four mounting columns 32 are fixed on the box body 17 through screws.

[0027] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A distributed energy storage cabinet control box comprising a cabinet (17) characterised in that: The front of the box (17) is provided with a first terminal post (18) and a third terminal post (20), the back of the box (17) is provided with a second terminal post (19) and a fourth terminal post (21), both sides of the box (17) are provided with heat dissipation holes (22), the inside of the box (17) is provided with a heat dissipation fan (3) and a 24V power module (8), and the inside of the box (17) is also provided with an AC power distribution system, a DC power distribution system and a control system. The AC power distribution system comprises an AC incoming line circuit breaker (1), a current transformer (4), a surge protector (5), a miniature circuit breaker (6) and a meter (10), the meter (10) is installed on the front of the box (17), the surge protector (5) is installed on the back of the box (17), the miniature circuit breaker (6) is installed on the front and back of the box (17), the AC incoming line circuit breaker (1) and the current transformer (4) are installed in the box (17), and the AC incoming line circuit breaker (1) is connected between the first terminal post (18) and the second terminal post (19) through a wire, and the wire passes through the current transformer (4). The DC power distribution system comprises a DC circuit breaker (2), a positive branch and a negative branch, the DC circuit breaker (2), the positive branch and the negative branch are installed in the box (17), the positive branch is connected between the third terminal post (20) and the fourth terminal post (21) through a wire, the DC circuit breaker (2) is connected in series with the positive branch, and the negative branch is connected in parallel at both ends of the positive branch. The control system comprises an EMS energy management control system (7) and a BMS battery management system (9), the EMS energy management control system (7) is installed on the back of the box (17), and the BMS battery management system (9) is installed in the box (17).

2. The distributed energy storage cabinet control box of claim 1, wherein: The positive branch comprises a fuse (11) and a positive contactor (14), the fuse (11) and the positive contactor (14) are connected in series with each other, and the positive contactor (14) has a pre-charge circuit connected in parallel at both ends.

3. The distributed energy storage cabinet control box of claim 1, wherein: The negative branch comprises a shunt (13) and a negative contactor (16), and the shunt (13) and the negative contactor (16) are connected in series with each other.

4. The distributed energy storage cabinet control box of claim 2, wherein: The pre-charge circuit comprises a pre-charge contactor (12) and a pre-charge resistor (15), and the pre-charge contactor (12) and the pre-charge resistor (15) are connected in series with each other.

5. The distributed energy storage cabinet control box of claim 1, wherein: The heat dissipation fan (3) comprises a fan body (31), a mounting column (32), a connecting plate (33) and a rubber gasket (34), four mounting columns (32) are arranged in a rectangular array around the shell of the fan body (31), the four mounting columns (32) and the shell of the fan body (31) are connected through two connecting plates (33), the bottom of each of the four mounting columns (32) is glued with a rubber gasket (34), and the four mounting columns (32) are fixed on the box (17) through screws.

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