Optical storage and charging all-in-one machine and optical storage and charging system

Abstract

The utility model discloses an optical storage and charging all-in-one machine and an optical storage and charging system, and relates to the technical field of optical storage and charging, the optical storage and charging all-in-one machine comprises a cabinet body, an energy storage unit, a photovoltaic control unit, a converter unit and a grid-connected and off-grid switching unit, and the cabinet body is provided with a first cabin body and a second cabin body which are isolated from each other; the energy storage unit is mounted in the first cabin body; the photovoltaic control unit is mounted in the second cabin body, and the photovoltaic control unit is electrically connected with the energy storage unit and the photovoltaic side; the current conversion unit is mounted in the second cabin body, and the current conversion unit is electrically connected with the energy storage unit and the load side; and the grid-connected and off-grid switching unit is arranged in the second cabin body and is electrically connected with the converter unit and the power grid side. According to the invention, the cabinet body is designed in a subdivision manner, the energy storage unit of the energy storage part is integrally installed in the first cabin body, and the current transformation unit, the current transformation unit and the grid-connected and off-grid switching unit of the electrical part are integrally installed in the second cabin body, so that the integration level is high, and mutual influence is avoided during installation, thereby improving the installation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of light storage and charging, and particularly relates to a light storage and charging integrated machine and a light storage and charging system. BACKGROUND

[0002] The light storage and charging integrated machine is a comprehensive device integrating photovoltaic power generation, energy storage and charging functions, and is mainly applied to electric vehicle charging stations, smart grids, off-grid systems and microgrids. By combining solar power generation, energy storage and electric vehicle charging technologies, the light storage and charging integrated machine can realize efficient use of energy, reduce energy costs, improve grid stability and achieve green environmental protection goals. However, in the related art, since the light storage and charging integrated machine is usually installed in a tower structure, the installation efficiency is low. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems in the prior art. To this end, the present application provides a light storage and charging integrated machine, wherein the energy storage part and the electrical part are independently installed in different cabin bodies, have high integration, do not affect each other during installation, and thus the installation efficiency is improved.

[0004] The present application also provides a light storage and charging system having the light storage and charging integrated machine.

[0005] According to the light storage and charging integrated machine provided by the first aspect of the present application, the light storage and charging integrated machine comprises:

[0006] a cabinet body, wherein the cabinet body is provided with a first cabin body and a second cabin body which are isolated from each other;

[0007] an energy storage unit, wherein the energy storage unit is installed in the first cabin body;

[0008] a photovoltaic control unit, wherein the photovoltaic control unit is installed in the second cabin body, and the photovoltaic control unit is electrically connected to the energy storage unit and a photovoltaic side;

[0009] a current conversion unit, wherein the current conversion unit is installed in the second cabin body, and the current conversion unit is electrically connected to the energy storage unit and a load side;

[0010] a parallel and off-grid switching unit, wherein the parallel and off-grid switching unit is installed in the second cabin body, and the parallel and off-grid switching unit is electrically connected to the current conversion unit and a grid side.

[0011] The light storage and charging integrated machine provided by the embodiment of the present application has at least the following beneficial effects:

[0012] By means of the cabin design of the cabinet body, the energy storage unit of the energy storage part is integrated and installed in the first cabin body, and the current conversion unit, the current conversion unit and the grid-connected and off-grid switching unit of the electrical part are integrated and installed in the second cabin body, so that the integration degree is high. Since the energy storage part and the electrical part are independently installed in different cabin bodies, they do not affect each other during installation, thereby improving the installation efficiency.

[0013] According to some embodiments of the present application, the light storage and charging integrated machine further comprises:

[0014] A first cabinet door is movably connected with the cabinet body, and the first cabinet door is used to close the energy storage unit in the first cabin body;

[0015] A second cabinet door is movably connected with the cabinet body, and the second cabinet door is used to close the current conversion unit, the photovoltaic control unit and the grid-connected and off-grid switching unit in the second cabin body.

[0016] According to some embodiments of the present application, the light storage and charging integrated machine further comprises a warning assembly and an emergency stop switch, and the warning assembly and the emergency stop switch are arranged in at least one of the first cabinet door and the second cabinet door, wherein the warning assembly comprises at least one of an alarm and an indicator.

[0017] According to some embodiments of the present application, the light storage and charging integrated machine further comprises:

[0018] A base is connected with the cabinet body and bears the cabinet body;

[0019] The photovoltaic control unit and the grid-connected and off-grid switching unit are arranged between the base and the current conversion unit.

[0020] According to some embodiments of the present application, the photovoltaic control unit and the grid-connected and off-grid switching unit are arranged side by side.

[0021] According to some embodiments of the present application, the light storage and charging integrated machine further comprises:

[0022] A heat dissipation unit is arranged at least partially in the first cabin body, and the heat dissipation unit is used to dissipate the heat generated by the energy storage unit.

[0023] According to some embodiments of the present application, the heat dissipation unit comprises a liquid cooling unit, and the liquid cooling unit is arranged in the first cabin body and spaced apart from the energy storage unit; and / or

[0024] In the case that the light storage and charging integrated machine further comprises a first cabinet door, the heat dissipation unit comprises an exhaust assembly, the exhaust assembly is arranged on the first cabinet door, and the exhaust assembly is arranged opposite to the energy storage unit.

[0025] According to some embodiments of the present application, the light storage and charging integrated machine further comprises a switching unit, the switching unit is arranged in the second cabin body, and the switching unit comprises at least one of the following:

[0026] a main incoming line switch, the main incoming line switch is arranged between the grid side and the grid-connected and off-grid switching unit;

[0027] a load switch, the load switch is arranged between the power conversion unit and the load side;

[0028] a bypass switch, the bypass switch is electrically connected between the grid side and the load side.

[0029] According to some embodiments of the present application, in the case that the light storage and charging integrated machine further comprises a second cabinet door, the second cabin body comprises:

[0030] a first sub-cabin body, the first sub-cabin body penetrates the first side and the second side of the cabinet body opposite to each other, and the power conversion unit, the photovoltaic control unit and the grid-connected and off-grid switching unit are located in the first sub-cabin body;

[0031] a second sub-cabin body, the second sub-cabin body is a semi-closed cabin body, and the opening of the second sub-cabin body is located on the first side or the second side, and the switching unit is arranged in the second sub-cabin body;

[0032] The light storage and charging integrated machine further comprises:

[0033] a third cabinet door, the third cabinet door is movably connected with the cabinet body, and the third cabinet door is used for covering the first side of the cabinet body, and the second cabinet door is used for covering the second side of the cabinet body.

[0034] According to the second aspect of the present application, a light storage and charging system comprises:

[0035] the light storage and charging integrated machine as described above;

[0036] and at least one of the load side, the grid side and the photovoltaic side electrically connected with the light storage and charging integrated machine.

[0037] According to the light storage and charging system of the present application, at least the following beneficial effects are achieved:

[0038] The light storage and charging integrated machine of the first aspect of the present application is designed by dividing the cabinet body into cabins, and when installed, the energy storage unit of the energy storage part is integrated and installed in the first cabin body, and the power conversion unit, the power conversion unit and the grid-connected and off-grid switching unit of the electrical part are integrated and installed in the second cabin body, so that the integration degree is high. Since the energy storage part and the electrical part are independently installed in different cabin bodies, they do not affect each other during installation, thereby improving the installation efficiency.

[0039] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0040] The present application will be further described with reference to the drawings and embodiments, wherein:

[0041] Figure 1 Structure diagram of the second side of the light storage and charging integrated machine of an embodiment of the present application;

[0042] Figure 2 Structure diagram of the first side of the light storage and charging integrated machine of an embodiment of the present application;

[0043] Figure 3 Electrical circuit diagram of the light storage and charging integrated machine of an embodiment of the present application.

[0044] LIST OF REFERENCE NUMBERS

[0045] Cabinet body 100, first cabinet door 110, second cabinet door 120, emergency stop switch 121, alarm 122, running indicator light 123, fault indicator light 124, base 130, support column 140, third cabinet door 150, energy storage unit 200, control box 210, photovoltaic control unit 300, current conversion unit 400, grid-connected and off-grid switching unit 500, liquid cooling unit 600, exhaust assembly 610, main incoming line switch 700, load switch 710, bypass switch 720, electric energy meter 730, socket 740, battery monitoring system 800, fire control controller 900. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described in detail below with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar reference numbers represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0047] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, which is only for the purpose of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0048] In the description of the present application, multiple refers to more than two. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0049] In the description of the present application, the words such as arrangement, installation, connection and the like should be understood in a broad sense, and the specific meanings of the above words in the present application can be determined by the person skilled in the art in combination with the specific content of the technical solution, unless otherwise explicitly limited.

[0050] Referring to Figure 1 and Figure 3 , the photovoltaic storage and charging integrated machine of an embodiment of the present application comprises:

[0051] The cabinet body 100 is provided with a first cabin and a second cabin which are isolated from each other.

[0052] The energy storage unit 200 is installed in the first cabin.

[0053] The photovoltaic control unit 300 is installed in the second cabin, and the photovoltaic control unit 300 is electrically connected to the energy storage unit 200 and the photovoltaic side.

[0054] The current conversion unit 400 is installed in the second cabin, and the current conversion unit 400 is electrically connected to the energy storage unit 200 and the load side.

[0055] The grid-connected and off-grid switching unit 500 is installed in the second cabin, and the grid-connected and off-grid switching unit 500 is electrically connected to the current conversion unit 400 and the grid side.

[0056] In the embodiment, by designing the cabinet body 100 to be divided into cabins, the energy storage unit 200 of the energy storage part is integrated and installed in the first cabin, and the current conversion unit 400 and the grid-connected and off-grid switching unit 500 of the electrical part are integrated and installed in the second cabin, so that the integration degree is high. Since the energy storage part and the electrical part are independently installed in different cabins, they do not affect each other during installation, thereby improving the installation efficiency.

[0057] In some embodiments of the present application, the cabinet body 100 is extended to form a support 140 from the bottom to the top, and the cabinet body 100 is divided into a first cabin and a second cabin by the support 140. In addition, the support 140 plays a supporting role and enhances the structural strength of the cabinet body 100. The cabinet body 100 can also be divided into a first cabin and a second cabin by setting a partition plate in the cabinet body 100.

[0058] In some embodiments of the present application, the energy storage unit 200 is used to store the photovoltaic side generated power, and when the photovoltaic storage charging integrated machine is connected to the power grid, the energy storage unit 200 is used to store the power grid side input power or feed the power grid side. The energy storage unit 200 includes one or more energy storage sub-units, and the type of energy storage device used by the energy storage sub-unit is not limited, for example, the energy storage sub-unit can use any one or more of a battery, a super capacitor. The battery is a cup, tank or other container or part of the composite container containing electrolyte solution and metal electrodes to generate current, which can convert chemical energy into electrical energy. When the energy storage sub-unit uses a battery, the type of battery is not limited, for example, the energy storage sub-unit can use one or more of a lithium ion battery, a lead-acid battery, and a nickel-cadmium battery. The super capacitor, also known as an electrochemical capacitor, a gold capacitor, and a farad capacitor, is a new type of energy storage device between a traditional capacitor and a rechargeable battery. It has the characteristics of fast charging and discharging of a capacitor, and also has the energy storage characteristics of a battery.

[0059] In some embodiments of the present application, the number of photovoltaic control units 300 is one or more, and the photovoltaic control unit 300 can be any component or circuit used to control the charging of the photovoltaic side to the energy storage unit 200 or to control the photovoltaic side to the power grid side. The photovoltaic control unit 300 can include a solar charging and discharging controller and a first circuit protection sub-unit, and the solar charging and discharging controller is electrically connected to the first circuit protection sub-unit.

[0060] The solar charging and discharging controller can use a maximum power point tracking controller, a pulse width modulation controller, etc. The maximum power point tracking controller is used to optimize the energy output of the photovoltaic side solar panel, and its core task is to adjust the output voltage and current of the solar panel in real time under changing light and temperature conditions to ensure that the photovoltaic side always works at the highest efficiency point, i.e. the maximum power point. The pulse width modulation controller can control the voltage and current in the circuit by adjusting the pulse width to accurately control the output power of the photovoltaic side.

[0061] Referring to Figure 3 The first circuit protection sub-unit can include a first short circuit protector (for example, including FU2, FU3 as shown in Figure 3 ) and a first surge protector (for example, including SPD2, SPD3 as shown in Figure 3 ). The solar charging and discharging controller is grounded through the first short circuit protector and the first surge protector. The first short circuit protector can quickly cut off the circuit when the photovoltaic side circuit is short-circuited to prevent damage to the equipment caused by the short-circuit of the circuit. The first surge protector can conduct a shunt in a very short time when a sharp current or voltage is suddenly generated in the photovoltaic side circuit, thereby avoiding damage to the equipment caused by the surge.

[0062] Referring to Figure 3As shown, in some embodiments of the present application, a photovoltaic switch (for example, including QF4, QF5 as shown in FIG. 4) is arranged between the photovoltaic control unit 300 and the grid side. By controlling the on or off of the photovoltaic switch, the circuit of the photovoltaic side can be connected or disconnected. Figure 3

[0063] In some embodiments of the present application, the current conversion unit 400 can be any component or circuit for AC-DC conversion. The DC power output by the energy storage unit 200 is converted into AC power by the current conversion unit 400 and output to the load side or the grid side. The current conversion unit 400 can adopt any one of energy storage converters, bidirectional inverters, etc. Among them, the energy storage converter is a device that can control the charging and discharging process of the battery and realize the mutual conversion between DC and AC. The bidirectional inverter is a converter that realizes the bidirectional conversion of electric energy, which can convert DC into AC and also can convert AC into DC.

[0064] Referring to Figure 2 As shown, in some embodiments of the present application, the photovoltaic energy storage and charging all-in-one machine further includes a control box 210, in which a second short-circuit protector (for example, including FU1, FU3 as shown in FIG. 3) and an energy storage switch (for example, KM1 as shown in FIG. 3) are arranged. Figure 3 The second short-circuit protector and the energy storage switch are arranged in series between the current conversion unit 400 and the energy storage unit 200. By controlling the on or off of the energy storage switch, the circuit of the energy storage unit 200, the grid side, the photovoltaic side and the load side can be connected or disconnected. The second short-circuit protector rapidly cuts off the circuit when the circuit of the energy storage unit 200 is short-circuited, preventing damage to the device caused by circuit short-circuiting. Figure 3

[0065] In some embodiments of the present application, the grid-connected and off-grid switching unit 500 can be any component or circuit for switching the photovoltaic energy storage and charging all-in-one machine between grid-connected and off-grid. The grid-connected and off-grid switching unit 500 can adopt any one of static transfer switches, automatic transfer switches, etc.

[0066] The static transfer switch is a device for power switching, which can realize intelligent and rapid separation of the grid and the microgrid, and switching of the power supply circuit. Specifically, the static transfer switch can continuously monitor the state of the grid side, including voltage, frequency and phase parameters, etc. Once it is detected that the grid side fails or the working range does not meet the preset conditions, the static transfer switch will immediately respond and control the photovoltaic energy storage and charging all-in-one machine to be off-grid.

[0067] ​​The automatic transfer switch is a crucial device in the power system, which can quickly switch the load from the main power supply to the standby power supply when the main power supply fails or is powered off, thereby ensuring the continuous supply of power and maintaining the normal operation of important loads. Specifically, in the present application, the automatic transfer switch can control the off-grid of the light storage and charging integrated machine when the grid side fails or the operating range does not meet the preset conditions.

[0068] Referring to Figure 1 As shown in the drawings, in some embodiments of the present application, the light storage and charging integrated machine further comprises:

[0069] The first cabinet door 110 is movably connected with the cabinet body 100, and the first cabinet door 110 is used to close the energy storage unit 200 in the first cabin body;

[0070] The second cabinet door 120 is movably connected with the cabinet body 100, and the second cabinet door 120 is used to close the current conversion unit 400, the photovoltaic control unit 300 and the on-off grid switching unit 500 in the second cabin body.

[0071] In the present embodiment, the energy storage unit 200 is closed in the first cabin body through the first cabinet door 110, and the first cabinet door 110 is movably connected with the cabinet body 100, which facilitates opening the first cabinet door 110 and installing and maintaining the energy storage unit 200 in the first cabin body. The first cabinet door 110 can be movably connected with the cabinet body 100 in a rotating connection or sliding connection manner. For example, the first cabinet door 110 can be hingedly connected with the cabinet body 100, and rotating the first cabinet door 110 can open or close the first cabin body; or the first cabinet door 110 can be slidingly connected with the cabinet body 100 in a way that a pulley and a sliding groove are matched, and pushing the first cabinet door 110 along the sliding groove can open or close the first cabin body. The current conversion unit 400, the photovoltaic control unit 300 and the on-off grid switching unit 500 are closed in the second cabin body through the second cabinet door 120.

[0072] The second cabinet door 120 is movably connected with the cabinet body 100, which facilitates opening the second cabinet door 120 and installing and maintaining the current conversion unit 400, the photovoltaic control unit 300 and the on-off grid switching unit 500 in the second cabin body. The second cabinet door 120 can be movably connected with the cabinet body 100 in a rotating connection or sliding connection manner. For example, the second cabinet door 120 can be hingedly connected with the cabinet body 100, and rotating the second cabinet door 120 can open or close the second cabin body; or the second cabinet door 120 can be slidingly connected with the cabinet body 100 in a way that a pulley and a sliding groove are matched, and pushing the second cabinet door 120 along the sliding groove can open or close the second cabin body. When a fault occurs in the equipment in the first cabin body or the second cabin body, only the corresponding first cabinet door 110 or second cabinet door 120 needs to be opened to repair the faulty equipment.

[0073] Referring to Figure 1 As shown in the drawings, in some embodiments of the present application, the light storage and charging integrated machine further comprises a warning assembly and an emergency stop switch 121, and the warning assembly and the emergency stop switch 121 are arranged on at least one of the first cabinet door 110 and the second cabinet door 120, wherein the warning assembly comprises at least one of an alarm 122 and an indicator light.

[0074] In the present embodiment, the warning assembly and the emergency stop switch 121 are arranged on the first cabinet door 110, and the warning assembly on the first cabinet door 110 is used to display the running state of the light storage and charging integrated machine and to give a warning reminder when a fault condition is monitored, for example, when an abnormal temperature of the light storage and charging integrated machine is monitored, a fire alarm is given by using the warning assembly. In the alarm 122 assembly, the alarm 122 can adopt one or more of an audible and visual alarm 122, a buzzer, etc. The indicator light comprises one or more of a running indicator light 123 and a fault indicator light 124, the running indicator light 123 is used to indicate the running state of the light storage and charging integrated machine, and the fault indicator light 124 is used to indicate the fault state of the light storage and charging integrated machine. The emergency stop switch 121 is a safety device used to quickly cut off the power supply of the equipment or stop the running of the equipment in an emergency. When a danger occurs, the light storage and charging integrated machine can be immediately terminated by controlling the emergency stop switch 121, so as to prevent personnel from being injured or the equipment from being damaged.

[0075] Referring to Figure 1 As shown in the drawings, in some embodiments of the present application, the light storage and charging integrated machine further comprises:

[0076] A base 130, the base 130 is connected with the cabinet 100 and bears the cabinet 100;

[0077] Among them, the photovoltaic control unit 300 and the grid-connected and off-grid switching unit 500 are arranged between the base 130 and the converter unit 400.

[0078] In the present embodiment, the cabinet 100 is installed on the base 130, and the base 130 can provide stable support for the cabinet 100 to ensure the stability and safety of the cabinet 100. The converter unit 400 is arranged at the top of the second cabin body, and the photovoltaic control unit 300 and the grid-connected and off-grid switching unit 500 are arranged between the base 130 and the converter unit 400. The converter unit 400, the photovoltaic control unit 300 and the grid-connected and off-grid switching unit 500 are reasonably arranged in the second cabin body, which facilitates wiring and makes full use of the space in the second cabin body.

[0079] In some embodiments of the present application, an energy storage monitoring unit is arranged in the second cabin body to monitor the state parameters of the energy storage unit 200 in real time. In the case of using a battery as the energy storage subunit, the energy storage monitoring unit adopts a battery monitoring system 800 integrated with a battery communication module to monitor the running parameters of the battery such as current, charging and discharging current, etc.

[0080] Referring to Figure 1 As shown in the drawings, in some embodiments of the present application, the photovoltaic control unit 300 is arranged side by side with the on-off grid switching unit 500.

[0081] In the present embodiment, the photovoltaic control unit 300 and the on-off grid switching unit 500 both need to be electrically connected with the inverter unit 400, so arranging the photovoltaic control unit 300 and the on-off grid switching unit 500 side by side can make the photovoltaic control unit 300 and the on-off grid switching unit 500 both close to the inverter unit 400, facilitating the electrical connection of the inverter unit 400 with the photovoltaic control unit 300 and the on-off grid switching unit 500 respectively.

[0082] Referring to Figure 1 As shown in the drawings, in some embodiments of the present application, the photovoltaic storage and charging all-in-one machine further comprises:

[0083] The heat dissipation unit, at least part of the heat dissipation unit is arranged in the first cabin, and the heat dissipation unit is used to dissipate the heat generated by the energy storage unit 200.

[0084] In the present embodiment, the energy storage unit 200 will generate heat during the charging and discharging process, in order to avoid overheating of the energy storage unit 200, a heat dissipation unit is arranged in the cabinet 100 to dissipate the heat generated by the energy storage unit 200. The heat dissipation unit can be arranged entirely in the first cabin to dissipate heat for the energy storage unit 200. Alternatively, part of the energy storage unit 200 can be arranged in the first cabin and the rest in the second cabin. The heat dissipation unit can use one or more of air-cooled heat sink, heat pipe heat sink, liquid-cooled heat sink, heat sink, etc.

[0085] Referring to Figure 1 As shown in the drawings, in some embodiments of the present application, the heat dissipation unit comprises a liquid cooling unit 600, the liquid cooling unit 600 is arranged in the first cabin in a spaced manner with the energy storage unit 200; and / or

[0086] In the case where the photovoltaic storage and charging all-in-one machine further comprises a first cabinet door 110, the heat dissipation unit comprises an exhaust assembly 610, the exhaust assembly 610 is arranged on the first cabinet door 110, and the exhaust assembly 610 is arranged opposite to the energy storage unit 200.

[0087] In the embodiment, the heat dissipation unit includes a liquid cooling unit 600, the liquid cooling unit 600 is arranged in the first cabin body, and the liquid cooling unit 600 is located between the base 130 and the energy storage unit 200. The liquid cooling unit 600 is isolated from the energy storage unit 200 by a partition. The liquid cooling unit 600 efficiently takes away the heat inside the first cabin body through a liquid circulation system, thereby maintaining a stable low-temperature environment, and the heat dissipation effect is excellent and the stability is good. The heat dissipation unit also includes an exhaust assembly 610, and the exhaust assembly 610 includes a fan. The exhaust assembly 610 is installed on the first cabinet door 110, and the exhaust assembly 610 is arranged opposite to the energy storage unit 200. The exhaust assembly 610 uses air flow to take away the heat generated by the energy storage unit 200, thereby reducing the surface temperature of the energy storage unit 200.

[0088] Referring to Figure 2 and Figure 3 In some embodiments of the present application, the light storage and charging integrated machine further includes a switching unit, the switching unit is arranged in the second cabin body, and the switching unit includes at least one of the following:

[0089] The main incoming line switch 700 is arranged between the grid side and the off-grid switching unit 500;

[0090] The load switch 710 is arranged between the load side and the current conversion unit 400;

[0091] The bypass switch 720 is electrically connected between the grid side and the load side.

[0092] In the embodiment, the main incoming line switch 700 (for example, QF1 in Figure 3 ) is arranged between the grid side and the off-grid switching unit 500. By controlling the main incoming line switch 700 to be closed, the circuit between the light storage and charging integrated machine and the grid side is connected. By controlling the main incoming line switch 700 to be opened, the circuit between the light storage and charging integrated machine and the grid side is disconnected. The load switch 710 (for example, QF3 in Figure 3 ) is arranged between the load side and the current conversion unit 400. By controlling the load switch 710 to be closed, the circuit between the energy storage unit 200 and the load side is connected, so that the energy storage unit 200 supplies power to the load side. By controlling the load switch 710 to be opened, the circuit between the energy storage unit 200 and the load side is disconnected, and the load side is powered off. The bypass switch 720 (for example, QF3 in Figure 3 ) is electrically connected between the grid side and the load side. By controlling the bypass switch 720 to be closed, the circuit between the grid side and the load side is connected, and the grid side supplies power to the load side. By controlling the bypass switch 720 to be opened, the circuit between the grid side and the load side is disconnected, and the load side is powered off.

[0093] In some embodiments of the present application, the load switch 710 and the bypass switch 720 are interlocked, so that the load switch 710 and the bypass switch 720 cannot be closed at the same time, avoiding the simultaneous power supply of the energy storage unit 200 and the grid side to the load side to damage the equipment. The load switch and the bypass switch 720 can be interlocked by mechanical interlocking, electrical interlocking, etc.

[0094] In some embodiments of the present application, the main incoming line switch 700, the load switch 710 and the bypass switch 720 all adopt air switches. The air switch is an electrical protection device, which has the function of switching the circuit, and can automatically disconnect the circuit when abnormal conditions such as overload or short circuit occur in the circuit, protecting the safety of the equipment and the line. The main incoming line switch 700, the load switch 710 and the bypass switch 720 can also select contactors and other switching devices.

[0095] Referring to Figure 3 In some embodiments of the present application, the main incoming line switch 700 and the grid side are provided with a second circuit protection subunit, and the second circuit protection subunit includes a third short-circuit protector (for example, FU4 in Figure 3 and a second surge protector (for example, SPD1 in Figure 3 The grid side is grounded through the third short-circuit protector and the second surge protector. The third short-circuit protector can quickly cut off the circuit when the grid side circuit is short-circuited, preventing damage to the equipment caused by the short-circuit of the circuit. The second surge protector can conduct shunt in a very short time when the grid side circuit suddenly generates a sharp peak current or voltage, thereby avoiding damage to the equipment by the surge.

[0096] Referring to Figure 1 and Figure 2 In some embodiments of the present application, the second cabinet door 120 is further included in the light storage charging integrated machine, and the second cabin body includes:

[0097] A first sub-cabin body, the first sub-cabin body penetrates the first side and the second side of the cabinet body 100, and the converter unit 400, the photovoltaic control unit 300 and the grid-connected and off-grid switching unit 500 are located in the first sub-cabin body;

[0098] A second sub-cabin body, the second sub-cabin body is a semi-closed cabin body, and the opening of the second sub-cabin body is located on the first side or the second side, and the switch unit is arranged in the second sub-cabin body;

[0099] The light storage charging integrated machine further includes:

[0100] A third cabinet door 150, the third cabinet door 150 is movably connected with the cabinet body 100, and the third cabinet door 150 is used for covering the first side of the cabinet body 100, and the second cabinet door 120 is used for covering the second side of the cabinet body 100.

[0101] In the embodiment, the first sub-cabin body penetrates the opposite first side and second side of the cabinet 100, and the converter unit 400, the photovoltaic control unit 300, and the grid-connected / off-grid switching unit 500 can be conveniently installed in the first sub-cabin body through the first side and the second side of the cabinet 100. The first side of the cabinet 100 is covered by the third cabinet door 150, the third cabinet door 150 is conveniently opened, and the converter unit 400, the photovoltaic control unit 300, and the grid-connected / off-grid switching unit 500 are maintained on the first side. The second side of the cabinet 100 is covered by the second cabinet door 120, the second cabinet door 120 is conveniently opened, and the converter unit 400, the photovoltaic control unit 300, and the grid-connected / off-grid switching unit 500 are maintained on the second side. The switch unit is arranged in the second sub-cabin body, the opening of the second sub-cabin body is located on the first side or the second side, the third cabinet door 150 or the second cabinet door 120 is conveniently opened, and the switch unit is controlled or maintained.

[0102] Referring to Figure 2 In some embodiments of the present application, the light storage and charging all-in-one machine further comprises an electric energy meter 730, and the electric energy meter 730 is arranged in the second sub-cabin body. The electric energy meter 730 is used to measure the charging and discharging data of the energy storage unit 200, and the charging and discharging data is used to execute the charging and discharging strategy of the energy storage unit 200.

[0103] Referring to Figure 1 In some embodiments of the present application, the light storage and charging all-in-one machine further comprises a socket 740, and the socket 740 is arranged in the first cabin body.

[0104] Referring to Figure 1 In some embodiments of the present application, the light storage and charging all-in-one machine further comprises:

[0105] A fire control unit 900, and the fire control unit 900 is arranged in the first cabin body.

[0106] In the embodiment, the energy storage unit 200 is connected with a fire control pipeline, a spray head is arranged on the fire control pipeline, the fire control unit 900 is arranged in the first cabin body, and the fire control unit 900 is used to control the spray head to open or close. When the energy storage unit 200 is in danger such as fire, the fire control unit 900 controls the spray head to open, and a fire extinguishing agent is delivered through the fire control pipeline to extinguish the fire. In the case that the energy storage unit 200 has a plurality of energy storage sub-units, each energy storage sub-unit in the energy storage unit 200 is in communication with the fire control pipeline, and a plurality of spray heads are arranged on the fire control pipeline, and the plurality of spray heads correspond to the plurality of energy storage sub-units one by one.

[0107] According to an embodiment of the present application, a light storage and charging system comprises:

[0108] The light storage and charging all-in-one machine as described above;

[0109] And at least one of the load side, the grid side and the photovoltaic side is electrically connected with the light storage and charging integrated machine.

[0110] The light storage and charging system of the embodiment adopts the light storage and charging integrated machine of the above embodiment. The light storage and charging integrated machine is designed by dividing the cabinet 100 into different cabins. When installed, the energy storage unit 200 of the energy storage part is integrated and installed in the first cabin, and the conversion unit 400, the conversion unit 400 and the grid-connected and off-grid switching unit 500 of the electrical part are integrated and installed in the second cabin. The integration degree is high. Since the energy storage part and the electrical part are independently installed in different cabins, they do not affect each other during installation, thereby improving the installation efficiency.

[0111] Since the light storage and charging system adopts all the technical solutions of the light storage and charging integrated machine of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0112] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present application.

Claims

1. A light storage and charging integrated machine, characterized in that, The application relates to a photovoltaic energy storage and charging integrated machine. The photovoltaic energy storage and charging integrated machine comprises: a cabinet body provided with a first cabin and a second cabin; a storage unit installed in the first cabin; a photovoltaic control unit installed in the second cabin, and the photovoltaic control unit is electrically connected with the storage unit and a photovoltaic side; a converter unit installed in the second cabin, and the converter unit is electrically connected with the storage unit and a load side; 2.The optical storage and charging all-in-one machine of claim 1, wherein, an on-grid and off-grid switching unit installed in the second cabin, and the on-grid and off-grid switching unit is electrically connected with the converter unit and a power grid side. The photovoltaic energy storage and charging integrated machine further comprises: a first cabinet door movably connected with the cabinet body, and the first cabinet door is used for closing the storage unit in the first cabin; 3.The light storage and charging integrated machine of claim 2, characterized in that, a second cabinet door movably connected with the cabinet body, and the second cabinet door is used for closing the converter unit, the photovoltaic control unit and the on-grid and off-grid switching unit in the second cabin. 4.The light storage and charging integrated machine of claim 1, wherein, The photovoltaic energy storage and charging integrated machine further comprises a warning assembly and an emergency stop switch, and the warning assembly and the emergency stop switch are arranged on at least one of the first cabinet door and the second cabinet door, wherein the warning assembly comprises at least one of an alarm and an indicator. The photovoltaic energy storage and charging integrated machine further comprises: a base connected with the cabinet body and bearing the cabinet body; 5. The light storage and charging all-in-one machine according to claim 4, characterized in that, wherein the photovoltaic control unit and the on-grid and off-grid switching unit are arranged between the base and the converter unit. 6.The optical storage and charging all-in-one machine of claim 1, wherein, The photovoltaic control unit and the on-grid and off-grid switching unit are arranged side by side. The photovoltaic energy storage and charging integrated machine further comprises: 7.The optical storage and charging all-in-one machine according to claim 6, characterized in that, a heat dissipation unit, at least part of the heat dissipation unit is arranged in the first cabin, and the heat dissipation unit is used for dissipating heat generated by the storage unit. The heat dissipation unit comprises a liquid cooling unit, and the liquid cooling unit is arranged in the first cabin and spaced apart from the storage unit; and / or 8.The optical storage and charging all-in-one machine of claim 1, wherein, when the photovoltaic energy storage and charging integrated machine further comprises a first cabinet door, the heat dissipation unit comprises an air exhaust assembly arranged on the first cabinet door and arranged opposite to the storage unit. The photovoltaic energy storage and charging integrated machine further comprises a switch unit arranged in the second cabin, and the switch unit comprises at least one of the following: a main incoming line switch arranged between the on-grid and off-grid switching unit and the power grid side; a load switch arranged between the converter unit and the load side; 9.The optical storage and charging all-in-one machine of claim 8, wherein, a bypass switch electrically connected between the power grid side and the load side. When the photovoltaic energy storage and charging integrated machine further comprises a second cabinet door, the second cabin comprises: a first sub-cabin penetrating through opposite first and second sides of the cabinet body, and the converter unit, the photovoltaic control unit and the on-grid and off-grid switching unit are arranged in the first sub-cabin; a second sub-cabin which is a semi-closed cabin, and an opening of the second sub-cabin is located on the first side or the second side, and the switch unit is arranged in the second sub-cabin. The photovoltaic energy storage and charging integrated machine further comprises: A third cabinet door is movably connected with the cabinet body, and is used for covering the first side of the cabinet body.

10. A light storage and charging system characterized by, Comprise: The light storage and charging integrated machine according to any one of claims 1 to 9; And at least one of a load side, a power grid side and a photovoltaic side electrically connected with the light storage and charging integrated machine.

Images