Energy storage box

Abstract

The utility model provides an energy storage box, comprising a box body comprising a box housing and a box door; the battery assembly is arranged on the right side of the box body; the liquid cooling machine is arranged on the left side of the box body; the high-voltage box is arranged on the left side of the box body and is positioned below the liquid cooling machine; the power distribution cabinet is arranged on the left side of the box body and located below the high-voltage box; the power distribution cabinet can move in the front-back direction relative to the box body. According to the energy storage box, the EMS controller, the external terminal and the air switch in the power distribution cabinet can be seen by opening the cabinet door of the power distribution cabinet, installation and wiring of the power distribution cabinet can be carried out very conveniently, and the installation efficiency and the space utilization rate of the energy storage box are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to an energy storage box. Background Art

[0002] Industrial and commercial energy storage is an important part of the energy storage market, and usually uses electrochemical energy storage technologies such as lithium batteries. Energy storage can be divided into power supply side, grid side, and user side energy storage according to the end customer. The power supply side and grid side energy storage are also called pre-meter energy storage or large storage, and user side energy storage is also called post-meter energy storage. User side energy storage is divided into industrial and commercial energy storage and household energy storage. The difference between the two lies in the customer group, and my country's user side energy storage is basically industrial and commercial energy storage.

[0003] The main reason for industrial and commercial energy storage users to configure energy storage is to meet their own internal electricity needs and use the peak-valley electricity price arbitrage to reduce operating costs. At the same time, energy storage can also be used as a backup power source to deal with sudden power outages. If photovoltaic power is configured, it can also maximize the self-generation of photovoltaic power generation and effectively increase the utilization rate of clean energy.

[0004] However, various components are integrated in the energy storage box in the prior art to ensure the normal operation of the energy storage box. The power distribution cabinet, which is an important component in the energy storage box, is generally fixedly installed in the energy storage cabinet. This design is not convenient for the maintenance of the power distribution cabinet and the installation and removal of various components in the power distribution cabinet, thus causing great inconvenience to users. Utility Model Content

[0005] In order to provide an energy storage box that is easy to maintain and install, the utility model provides an energy storage box comprising: a box body, including a box shell and a box door; a battery assembly, arranged on the right side of the box body; a liquid cooler, arranged on the left side of the box body; a high-voltage box, arranged on the left side of the box body and located below the liquid cooler; a power distribution cabinet, arranged on the left side of the box body and located below the high-voltage box; the power distribution cabinet can move in the front and rear directions relative to the box body.

[0006] Furthermore, the power distribution cabinet includes a cabinet door movable relative to the shell.

[0007] Furthermore, the power distribution cabinet also includes an EMS controller, external terminals and an air switch. When a user opens the cabinet door, the EMS controller, the external terminals and the air switch can be seen.

[0008] Furthermore, the power distribution cabinet also includes a switching power supply, internal equipment terminals and an intermediate relay; the switching power supply, the internal equipment terminals and the intermediate relay are located behind the EMS controller, the external terminals and the air switch.

[0009] Furthermore, the power distribution cabinet also includes an internal equipment threading hole arranged on the rear side of the shell, and the connecting wires in the energy storage box can be connected to various components in the power distribution cabinet through the internal equipment threading hole.

[0010] Furthermore, the power distribution cabinet also includes an external device threading hole arranged at the bottom of the shell, and the external device threading hole can be connected to an external connecting line.

[0011] Furthermore, an indicator light is provided on the door of the power distribution cabinet to display the power-on status of the power distribution cabinet.

[0012] Furthermore, in the front-to-rear direction of the power distribution cabinet, the switching power supply is located between the air switch and the wiring terminal.

[0013] Furthermore, a guide rail is provided in the box body, and the power distribution cabinet can move in the front-rear direction relative to the box body along the guide rail.

[0014] The power distribution cabinet in the energy storage box of the utility model can move forward and backward relative to the energy storage box shell. When the power distribution cabinet needs to be repaired, installed and disassembled, the power distribution cabinet can be pulled out from the box body, thereby freeing up sufficient operating space for operators and facilitating the disassembly and installation of the energy storage box; and the door of the power distribution cabinet can be moved relative to the shell. When the door of the power distribution cabinet is opened, it is convenient to handle the air switch, wiring terminals and other components in the power distribution cabinet, thereby further improving the convenience of operation of the energy storage box. Since the power distribution cabinet is located at the lower left position of the energy storage box, it occupies a small volume of the energy storage box, and the positions of the various components in the energy storage box are reasonably arranged, which improves the space utilization rate of the energy storage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the energy storage box of the utility model;

[0016] Figure 2 It is a three-dimensional schematic diagram of the energy storage box of the utility model with part of the shell removed;

[0017] Figure 3 This is a front view of the power distribution cabinet in the energy storage box of the utility model;

[0018] Figure 4 This is a schematic diagram of the power distribution cabinet in the energy storage box of the utility model with the door opened;

[0019] Figure 5 This is a schematic diagram of the power distribution cabinet in the energy storage box of the utility model with a portion of the shell removed;

[0020] Figure 6 This is a schematic diagram of the power distribution cabinet of the utility model from another angle. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0022] like Figure 1-2 As shown, the energy storage box of the utility model includes a box shell and a box door, and important components such as a battery assembly 40, a liquid cooler 30, a high-voltage box 20 and a power distribution cabinet 10 are arranged in the box shell. In the left-right direction, the battery assembly 40 is located on the right side of the energy storage box body, and the battery assembly 40 includes a plurality of battery modules arranged in parallel with each other. The liquid cooler 30, the high-voltage box 40, and the power distribution cabinet 10 are located on the left side of the energy storage box. Specifically, in the up-down direction, the power distribution cabinet 10 is located below the energy storage box body. Further, the power distribution cabinet is located below the liquid cooler 30. In the front-to-back direction, the power distribution cabinet 10 can move in the front-to-back direction relative to the energy storage box body. At the same time, in order to make the power distribution cabinet move more smoothly in the front-to-back direction, the utility model also provides guide rails 91, 92 in the battery box body, and the power distribution cabinet can move in the front-to-back direction along the guide rails 914, 92. Optionally, in order to save the production cost of the energy storage box, the guide rail may not be provided, but two fixing bars may be directly provided, and the distribution box may also move forward and backward along the fixing bars in the energy storage box. The distribution cabinet 10 of the utility model is located at the lower left of the battery box body, and occupies a small volume of the box body, thereby providing sufficient space for the energy storage box to accommodate the battery components and improving the energy density of the energy storage box, providing more electricity to the user to the greatest extent; and the distribution cabinet 10 is arranged below the energy storage box, which is convenient for maintenance personnel or users to check the situation in the distribution cabinet to confirm which specific component of the distribution cabinet has failed. The distribution cabinet is configured to be movable forward and backward relative to the energy storage box shell. When it is necessary to confirm the situation of the distribution cabinet, it is only necessary to pull the distribution cabinet 10 out of the shell, which can make it more convenient for the operator to check and view the situation in the distribution cabinet.

[0023] Furthermore, if Figure 2As shown, the overall structure of the power distribution cabinet 10 in the energy storage box of the utility model is roughly rectangular, including a shell 110 and a plurality of internal components contained in the shell 110. The shell 110 is made of iron as a whole, and the shell 110 includes a cabinet door 101, which can be opened or closed relative to the main body of the shell. A power indicator light 102 is also provided on the cabinet door 101. When the power distribution cabinet 10 is powered on, the indicator light 102 on the power distribution cabinet 10 lights up. The shell 110 of the power distribution cabinet 10 contains a plurality of internal components, including: an EMS controller 103, an air switch 105, an external terminal 104, a switching power supply 106, an internal device connection terminal 107, and an intermediate relay 108. In this embodiment, the EMS controller 103 is a key controller of the energy storage system. The air switch 105 is mainly used as a protection switch for the incoming power supply and the internal equipment. The external terminal 104 serves as a signal connection terminal for the external power supply and the external PCS. Switching power supply 106: provides DC24V power supply inside the energy storage box. Internal equipment terminal 107 is the connection terminal between the internal equipment of the energy storage box and the power distribution cabinet. Intermediate relay 108 can amplify the small current output by the EMS controller.

[0024] like Figure 1-3 As shown, when the power distribution cabinet 10 is installed in the energy storage box, in the front and rear direction of the energy storage box, an air switch 105, an external terminal 104 and an EMS controller 103 are arranged at the front end of the power distribution cabinet 10, and these three internal components are configured to be opposite to the cabinet door, so when the user opens the cabinet door, the status of the air switch 105, the external terminal 104 and the EMS controller 103 can be immediately seen. More specifically, the external terminal 104 and the air switch 105 are located on the right side of the power distribution cabinet, and the EMS controller 103 is located on the left side of the power distribution cabinet. More specifically, the external terminal 104 is located at the bottom of the power distribution cabinet, and the air switch 105 is located above the external terminal. The front door of the power distribution cabinet is opened, and the air switch 105 is set at a position directly opposite the cabinet door 101. When the energy storage box is abnormally powered off, the user can find out whether the air switch 105 is disconnected at the first time of opening the cabinet door. If an abnormal disconnection occurs, the user can conveniently operate the air switch to power on and off the energy storage box, which is easy to operate; and the EMS controller 103 is installed near the cabinet door and on the left side of the power distribution cabinet, which can be more conveniently connected to other devices without interfering with other devices; the external terminal 104 is installed below the air switch 105 and is located at the bottom of the power distribution cabinet, which is very convenient for wiring and connecting with external equipment, because the user or operator does not need to pull the wires high, so that the operation can be performed at a very low position.

[0025] like Figure 5As shown, the intermediate relay 108, the internal device connection terminal 107 and the switch power supply 106 in the power distribution cabinet are located at the rear end of the power distribution cabinet, more specifically, the intermediate relay 108 is located at the rear end of the power distribution cabinet, the connection terminal 107 is located at the rear end of the air switch 105, and the switch power supply 106 is located between the intermediate relay 108 and the air switch 105. This arrangement is mainly because the intermediate relay 108, the internal device connection terminal 107 and the switch power supply 106 are not prone to failure, and these electrical components do not need to be connected to external devices, so this arrangement reasonably arranges the various components of the power distribution cabinet.

[0026] like Figure 6 As shown, an internal equipment threading hole 501 is provided on the side of the power distribution cabinet housing opposite to the cabinet door 101, and an external equipment threading hole 502 is provided at the bottom of the housing; the external equipment threading hole 502 is located at the bottom of the housing near the cabinet door. In this embodiment, the connection wires between the energy storage box and the power distribution cabinet enter the internal equipment threading hole 501 at the rear of the power distribution cabinet through the wiring groove located in the energy storage box at the bottom of the power distribution cabinet, enter the inside of the power distribution cabinet, and connect with the electrical components inside the power distribution cabinet. When the power distribution cabinet is maintained, it moves along the front of the energy storage box. In the embodiment of the present invention, the internal equipment threading hole is set at the rear end of the power distribution cabinet shell, and the internal connection wire enters the internal equipment threading hole at the rear end from the front end of the power distribution cabinet along the wire groove at the bottom to connect with various components in the power distribution cabinet. The internal connection wire has a longer length. When the power distribution cabinet needs to be inspected or repaired, and is dragged out along the front end of the energy storage box, the connection wire can be freely stretched and moved outward from the power distribution cabinet. Therefore, the internal equipment transmission hole is set at the rear end of the power distribution cabinet, which can facilitate the connection harness to be not broken when the power distribution cabinet is dragged outward during maintenance; and the external equipment threading hole is set at the bottom of the shell and close to the cabinet door. The external connection wire enters from the bottom through the external equipment threading hole and is connected to the external terminal, which is convenient for on-site wiring.

[0027] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention.

[0028] It is not a limitation of the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An energy storage box, comprising: The box body comprises a box shell and a box door; A battery assembly is arranged on the right side of the box; A liquid cooler, arranged on the left side of the box; A high-pressure box, arranged on the left side of the box body and below the liquid cooler; The power distribution cabinet is arranged on the left side of the box body and below the high-voltage box; characterized in that: The power distribution cabinet can be moved in the front-to-back direction relative to the housing; the power distribution cabinet also includes an EMS controller, external terminals, an air switch, and a cabinet door that can be moved relative to the housing, and when the user opens the cabinet door, the EMS controller, the external terminals and the air switch can be seen; a guide rail is also arranged in the housing, and the power distribution cabinet can be moved in the front-to-back direction relative to the housing along the guide rail.

2. The energy storage box according to claim 1, characterized in that: The power distribution cabinet also includes a switching power supply, internal equipment terminals and an intermediate relay; the switching power supply, the internal equipment terminals and the intermediate relay are located behind the EMS controller, the external terminals and the air switch.

3. The energy storage box according to claim 1, characterized in that: The power distribution cabinet also includes an internal equipment threading hole arranged at the rear side of the shell, and the connecting wires in the energy storage box can be connected to various components in the power distribution cabinet through the internal equipment threading hole.

4. The energy storage box according to claim 1, characterized in that: The power distribution cabinet also includes an external device threading hole arranged at the bottom of the shell, and the external device threading hole can be connected to an external connecting line.

5. The energy storage box according to claim 1, characterized in that: The cabinet door of the power distribution cabinet is also provided with an indicator light to display the power-on status of the power distribution cabinet.

6. The energy storage box according to claim 2, characterized in that: In the front-to-back direction of the power distribution cabinet, the switching power supply is located between the air switch and the wiring terminal.

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