Energy storage system convenient for wiring

Abstract

The utility model discloses an energy storage system convenient for wiring. The energy storage system comprises a cabinet body, an electric connection box, a PCS device, a control box and an energy storage auxiliary power utilization assembly. A first wiring port assembly of the electric connection box is used for being connected with a power grid, a second wiring port assembly is used for being connected with external 220V auxiliary power, a third wiring port assembly is electrically connected to the first wiring port assembly, and a fourth wiring port assembly is electrically connected to the second wiring port assembly. The PCS device is electrically connected to the third interface group of the electric connection box. The control box is connected to the fourth wiring port assembly and the PCS device. The control box can switch the fourth wiring port assembly or the PCS device to be electrically connected with the energy storage auxiliary power utilization assembly. In order to ensure the stability of the energy storage system, the control box can be switched to the fourth wiring port assembly from the PCS device, and stable external 220V auxiliary power supplies power to the energy storage auxiliary power utilization assembly, so that the situation that the overall operation of the system is influenced when the battery pack end is insufficient in power is avoided, and the normal operation of the energy storage auxiliary power utilization assembly is ensured; and the electric connection box is connected with the power grid and the 220V external power supply of the client, so that the wiring is convenient and the safety is good.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, and in particular to an energy storage system with convenient wiring. Background Art

[0002] The energy storage system in the prior art includes a cabinet, a PCS device and a control box. The PCS device is arranged in the cabinet, and the PCS device is connected to the battery pack, and the PCS device is used to be electrically connected to the power grid. The control box is arranged in the cabinet. The PCS device is connected to three live wires, and the three live wires are used to be electrically connected to the power grid. Two of the three live wires are connected to the transformer to be electrically connected to each of the energy storage auxiliary power components through the 380V to 220V transformer. In the prior art, the three live wires connected from the power grid to the PCS device need to be calculated by an electric meter for charging and discharging electricity. However, when the internal power of the energy storage system is insufficient, the energy storage auxiliary power components cannot be powered normally, which affects the normal operation of the energy storage auxiliary power components and also affects the normal operation of the entire energy storage system.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The utility model provides an energy storage system which is convenient for wiring.

[0005] The utility model adopts the following technical solutions:

[0006] An energy storage system with convenient wiring, comprising:

[0007] A cabinet, on which a battery pack is arranged;

[0008] An electrical connection box, the electrical connection box is arranged on the outer surface of the cabinet, the electrical connection box has a first wiring port assembly, a second wiring port assembly, a third wiring port assembly and a fourth wiring port assembly, the first wiring port assembly is used to connect to the power grid, the second wiring port assembly is used to connect to the external 220V auxiliary power, the third wiring port assembly is electrically connected to the first wiring port assembly, and the fourth wiring port assembly is electrically connected to the second wiring port assembly;

[0009] A PCS device, the PCS device is disposed in the cabinet, the PCS device is electrically connected to the battery pack, and the PCS device is electrically connected to a third interface group of the electrical connection box;

[0010] A control box, which is arranged in the cabinet and is respectively connected to the fourth wiring port assembly and the PCS device;

[0011] An energy storage auxiliary electrical component is provided in the cabinet and / or the control box, and the control box can switch the fourth wiring port component or the PCS device to be electrically connected to the energy storage auxiliary electrical component.

[0012] Optionally, the cabinet includes a cabinet shell and a door body;

[0013] The cabinet shell has a battery cavity and an opening communicating with the battery cavity, and the battery pack is arranged in the battery cavity;

[0014] The door body is movably connected to the cabinet shell, and the door body is used to open or close the opening;

[0015] The electrical connection box is arranged on the cabinet shell.

[0016] Optionally, the cabinet shell has a back plate and outer side plates arranged on both sides of the back plate;

[0017] The opening is formed between the two outer plates;

[0018] The electrical connection box is arranged on the back plate.

[0019] Optionally, the electrical connection box includes a box body, an electric energy meter, a wiring circuit and a current sensor;

[0020] The box body is arranged on the back plate;

[0021] The electric energy meter, wiring circuit and current sensor are all arranged in the box;

[0022] The wiring circuit connects the first wiring port assembly and the third wiring port assembly, the current sensor is arranged on the wiring circuit, and the electric energy meter is electrically connected to the current sensor.

[0023] Optionally, the PCS device is connected to three live wires, the third wiring port assembly includes three interfaces, and each of the live wires is electrically connected to a corresponding interface.

[0024] Optionally, the energy storage system with convenient wiring includes two live wire brackets;

[0025] The two brackets are arranged at intervals;

[0026] The three live wires are located on one side of the PCS device, and two ends of the three live wires are respectively fixed on corresponding live wire brackets.

[0027] Optionally, the control box has a 380V to 220V transformer, and two of the three live wires are connected to the transformer of the control box to be electrically connected to each of the energy storage auxiliary electrical components through the 380V to 220V transformer.

[0028] Optionally, the control box includes a conversion switch, which is used to switch and control the connection between the 380V to 220V transformer and one of the fourth wiring port components and the energy storage auxiliary power component.

[0029] Optionally, the control box has a control cavity and a heat dissipation hole connected to the control cavity, and the 380V to 220V transformer is arranged in the control cavity.

[0030] Optionally, a communication port connected to the control cavity is provided on the control box, and a heat dissipation fan is provided on the communication port.

[0031] By adopting the above technical solution, the utility model has the following beneficial effects:

[0032] In order to ensure that the energy storage system remains in a stable state, the control box can be switched from the PCS device to the fourth wiring port component, and the stable external 220V auxiliary power is used to power the energy storage auxiliary power components, avoiding the impact of power loss on the overall operation of the system when the battery pack is low on power, ensuring the normal operation of the energy storage auxiliary power components, and connecting the power grid and the client's 220V external power supply through the electrical connection box, which is convenient for wiring and safe.

[0033] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0035] Figure 1 An appearance structure diagram of an energy storage system that is convenient for wiring provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of the internal structure of a cabinet housing of an energy storage system for convenient wiring provided in an embodiment of the present application;

[0037] Figure 3 A schematic diagram of the structure of an electrical connection box for an energy storage system that facilitates wiring provided in an embodiment of the present application;

[0038] Figure 4 A schematic diagram of the internal structure of an electrical connection box of an energy storage system for convenient wiring provided in an embodiment of the present application.

[0039] In the figure, cabinet body 01, cabinet shell 0121, back panel 01212, outer panel 01213, door body 0122, PCS device 06, control box 07, conversion switch 072, energy storage auxiliary power component 09, electrical connection box 010, first wiring port component 0101, second wiring port component 0102, third wiring port component 0103, fourth wiring port component 0104, box body 0105, electric energy meter 0106, wiring circuit 0107, current sensor 0108, and live wire 020.

[0040] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships 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 component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] See also Figures 1 to 4As shown, the embodiment of the present application provides an energy storage system with convenient wiring, including: a cabinet 01, an electrical connection box 010, a PCS device 06, a control box 07 and an energy storage auxiliary power component 09. A battery pack is arranged on the cabinet 01. The electrical connection box 010 is arranged on the outer surface of the cabinet 01, and the electrical connection box 010 has a first wiring port component 0101, a second wiring port component 0102, a third wiring port component 0103 and a fourth wiring port component 0104. The first wiring port component 0101 is used to connect to the power grid, and the second wiring port component 0102 is used to connect to the external 220V auxiliary power (or: client 220V external power supply), the third wiring port component 0103 is electrically connected to the first wiring port component 0101, and the fourth wiring port component 0104 is electrically connected to the second wiring port component 0102. The PCS device 06 is arranged in the cabinet 01, and the PCS device 06 is electrically connected to the battery pack, and the PCS device 06 is electrically connected to the third interface group of the electrical connection box 010. The control box 07 is arranged in the cabinet 01, and the control box 07 is respectively connected to the fourth wiring port assembly and the PCS device 06. The energy storage auxiliary power component 09 is arranged in the cabinet 01 and / or the control box 07, and the control box 07 can switch the fourth wiring port assembly or the PCS device 06 to be electrically connected with the energy storage auxiliary power component 09. In order to ensure that the energy storage system remains in a stable state, the control box 07 can be switched from the PCS device 06 to the fourth wiring port assembly, and the energy storage auxiliary power component 09 is powered by a stable external 220V auxiliary power, which avoids affecting the overall operation of the system when the battery pack is low on power, ensures the normal operation of the energy storage auxiliary power component 09, and connects the power grid and the client's 220V external power supply through the electrical connection box 010, which is convenient for wiring and has good safety. The first wiring port assembly 0101 and the second wiring port assembly 0102 can both be quick-connect connectors, which facilitates connection and disassembly.

[0045] like Figure 1 As shown, the cabinet 01 includes a cabinet shell 0121 and a door 0122. The cabinet shell 0121 has a battery cavity and an opening connected to the battery cavity, and the battery pack is arranged in the battery cavity. The door 0122 is movably connected to the cabinet shell 0121, and the door 0122 is used to open or close the opening. The electrical connection box 010 is arranged on the cabinet shell 0121, which facilitates the connection between the electrical connection box 010 and the power grid and the client's 220V external power supply.

[0046] like Figure 2As shown, the cabinet housing 0121 has a back plate 01212 and outer plates 01213 disposed on both sides of the back plate 01212. The opening is formed between the two outer plates 01213, and the electrical connection box 010 is disposed on the back plate 01212. The door body 0122 is located at the opening, and the door body 0122 is used to open or close the opening. The door body 0122 is not convenient for arranging the electrical connection box 010, but the back plate 01212 is convenient for arranging the electrical connection box 010.

[0047] In one possible embodiment, Figure 3 and Figure 4 As shown, the electrical connection box 010 includes a box body 0105, an electric energy meter 0106, a wiring circuit 0107 and a current sensor. The box body 0105 is arranged on the back plate 01212, and the box body 0105 can be fixed on the back plate 01212 by welding or fasteners. The electric energy meter 0106, the wiring circuit 0107 and the current sensor are all arranged in the box body 0105. The box body 0105 has a protective effect on the electric energy meter 0106, the wiring circuit 0107 and the current sensor, preventing the electric energy meter 0106, the wiring circuit 0107 and the current sensor from being exposed to the outside and easily causing collision or leakage. The wiring circuit 0107 connects the first wiring port assembly 0101 and the third wiring port assembly 0103, the current sensor is arranged on the wiring circuit 0107, and the electric energy meter 0106 is electrically connected to the current sensor. The electric energy meter 0106 can calculate the charge and discharge amount of the energy storage system according to the current sensor signal.

[0048] like Figure 2 As shown, the PCS device 06 is connected with three live wires 020, the third wiring port assembly 0103 includes three interfaces, and each live wire 020 is electrically connected to a corresponding interface. The first wiring port assembly 0101 also includes three interfaces, and the wiring circuit 0107 also includes three wires, and the three live wires 020 are respectively connected to the three interfaces of the third wiring port assembly 0103, and the three wires of the wiring circuit 0107 are respectively connected between the three interfaces of the first wiring port assembly 0101 and the three interfaces of the third wiring port assembly 0103.

[0049] In one possible embodiment, Figure 2As shown, the energy storage system with convenient wiring includes two live wire 020 brackets. The two brackets are arranged at intervals. The three live wires 020 are located on one side of the PCS device 06, and the two ends of the three live wires 020 are respectively fixed on the corresponding live wire 020 brackets, so that the live wires 020 are neatly fixed on the corresponding live wire 020 brackets, the wiring is beautiful, the live wires 020 are not entangled with each other, the safety is good, and short circuit is not easy to occur.

[0050] The control box 07 has a 380V to 220V transformer, and two of the three live wires 020 are connected to the transformer of the control box 07 to be electrically connected to each of the energy storage auxiliary power components 09 through the 380V to 220V transformer. The 380V to 220V transformer converts the 380V voltage of the live wire 020 into a 220V voltage to power the energy storage auxiliary power components 09.

[0051] like Figure 2 As shown, the control box 07 includes a conversion switch 072, which is used to switch and control the connection between the 380V to 220V transformer and one of the fourth wiring port components and the energy storage auxiliary power component 09. The conversion switch 072 can be any one of an electronic switch and a mechanical switch.

[0052] In a possible implementation, the control box 07 has a control cavity and a heat dissipation hole connected to the control cavity, and the 380V to 220V transformer is arranged in the control cavity. The 380V to 220V transformer also generates heat during operation, and each device in the control box 07 also needs to dissipate heat, and the heat dissipation hole facilitates the heat dissipation in the control cavity.

[0053] The control box 07 is provided with a communication port connected to the control cavity, and a heat dissipation fan is provided on the communication port. The heat dissipation fan is conducive to quickly discharging the heat in the control cavity.

[0054] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. An energy storage system with convenient wiring, characterized in that: include: A cabinet, on which a battery pack is arranged; An electrical connection box, the electrical connection box is arranged on the outer surface of the cabinet, the electrical connection box has a first wiring port assembly, a second wiring port assembly, a third wiring port assembly and a fourth wiring port assembly, the first wiring port assembly is used to connect to the power grid, the second wiring port assembly is used to connect to the external 220V auxiliary power, the third wiring port assembly is electrically connected to the first wiring port assembly, and the fourth wiring port assembly is electrically connected to the second wiring port assembly; A PCS device, the PCS device is disposed in the cabinet, the PCS device is electrically connected to the battery pack, and the PCS device is electrically connected to a third interface group of the electrical connection box; A control box, which is arranged in the cabinet and is respectively connected to the fourth wiring port assembly and the PCS device; An energy storage auxiliary electrical component is provided in the cabinet and / or the control box, and the control box can switch the fourth wiring port component or the PCS device to be electrically connected to the energy storage auxiliary electrical component.

2. The energy storage system with convenient wiring according to claim 1, characterized in that: The cabinet body comprises a cabinet shell and a door body; The cabinet shell has a battery cavity and an opening communicating with the battery cavity, and the battery pack is arranged in the battery cavity; The door body is movably connected to the cabinet shell, and the door body is used to open or close the opening; The electrical connection box is arranged on the cabinet shell.

3. The energy storage system with convenient wiring according to claim 2, characterized in that: The cabinet shell comprises a back plate and outer side plates arranged on both sides of the back plate; The opening is formed between the two outer plates; The electrical connection box is arranged on the back plate.

4. The energy storage system with convenient wiring according to claim 3, characterized in that: The electrical connection box comprises a box body, an electric energy meter, a wiring circuit and a current sensor; The box body is arranged on the back plate; The electric energy meter, wiring circuit and current sensor are all arranged in the box; The wiring circuit connects the first wiring port assembly and the third wiring port assembly, the current sensor is arranged on the wiring circuit, and the electric energy meter is electrically connected to the current sensor.

5. The energy storage system with convenient wiring according to claim 1, characterized in that: The PCS device is connected with three live wires, the third wiring port assembly includes three interfaces, and each of the live wires is electrically connected to a corresponding interface.

6. The energy storage system with convenient wiring according to claim 5, characterized in that: Includes two FireWire brackets; The two brackets are arranged at intervals; The three live wires are located on one side of the PCS device, and two ends of the three live wires are respectively fixed on corresponding live wire brackets.

7. The energy storage system with convenient wiring according to claim 5, characterized in that: The control box has a 380V to 220V transformer, and two of the three live wires are connected to the transformer of the control box to be electrically connected to each of the energy storage auxiliary electrical components through the 380V to 220V transformer.

8. The energy storage system with convenient wiring according to claim 7, characterized in that: The control box includes a conversion switch, which is used to switch and control the connection between the 380V to 220V transformer and one of the fourth wiring port components and the energy storage auxiliary power component.

9. The energy storage system with convenient wiring according to claim 7, characterized in that: The control box has a control cavity and a heat dissipation hole connected to the control cavity, and the 380V to 220V transformer is arranged in the control cavity.

10. The energy storage system with convenient wiring according to claim 9, characterized in that: The control box is provided with a communication port connected with the control cavity, and a heat dissipation fan is provided on the communication port.

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