Electric energy management equipment and system suitable for photovoltaic storage and charging

Abstract

The invention belongs to the technical field of electric energy management, and particularly relates to an electric energy management device and system suitable for photovoltaic storage and charging, the electric energy management device suitable for photovoltaic storage and charging comprises an outer casing, the outer casing is internally provided with a plurality of battery stations in a rectangular array, and the plurality of battery stations are fixedly connected with storage battery modules; a movable isolation cover capable of moving is arranged in the outer shell and can cover the outer side of any storage battery module; the outer side of the outer machine shell is fixedly connected with a power connection set, and the power connection set is electrically connected with a storage battery module located in the movable isolation cover through a conductive assembly. A first temperature regulation and control mechanism and a second temperature regulation and control mechanism are fixedly connected to the outer side of the outer machine shell, the first temperature regulation and control mechanism communicates with the outer machine shell, and the second temperature regulation and control mechanism communicates with the movable isolation hood. According to the invention, the storage battery module can be relatively simply enabled to have relatively good environment temperature in both the storage state and the operation state.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric energy management, and particularly relates to an electric energy management device and system suitable for photovoltaic storage and charging. BACKGROUND

[0002] At present, with the rapid development of photovoltaic storage and charging technology, the electric energy management device as the core hub between the photovoltaic module, the energy storage unit and the power load / generator directly affects the comprehensive performance of the entire photovoltaic storage and charging system. The battery module as the core of energy storage has high sensitivity to the environmental temperature. In the running state, the battery module will generate heat due to the charging and discharging process, and needs to be quickly cooled to avoid capacity attenuation, shortened life and even safety risks caused by high temperature. In the storage state, the battery module needs to maintain a relatively stable low temperature or constant temperature environment to reduce the self-discharge rate and ensure the long-term energy storage reliability.

[0003] The existing photovoltaic storage and charging electric energy management device adopts overall temperature regulation and does not distinguish the running and storage states of the battery module. It cannot well match the temperature requirements in the two states, and cannot make the battery module have good environmental temperature in the storage state and the running state. SUMMARY

[0004] The purpose of the application is to provide an electric energy management device and system suitable for photovoltaic storage and charging, which can simply make the battery module have good environmental temperature in the storage state and the running state.

[0005] The technical scheme adopted by the application is as follows:

[0006] An electric energy management device suitable for photovoltaic storage and charging, comprising an outer shell, a plurality of battery stations in a rectangular array are arranged in the inner part of the outer shell, and a battery module is fixedly connected to each of the plurality of battery stations;

[0007] A movable movable isolation cover is arranged in the inner part of the outer shell, and the movable isolation cover can cover the outer side of any battery module;

[0008] An electricity connection group is fixedly connected to the outer side of the outer shell, and the electricity connection group is electrically connected to the battery module in the inner part of the movable isolation cover through a conductive assembly;

[0009] A first temperature regulation mechanism and a second temperature regulation mechanism are fixedly connected to the outer side of the outer shell, the first temperature regulation mechanism is in communication with the outer shell, and the second temperature regulation mechanism is in communication with the movable isolation cover.

[0010] Further, the movable isolation cover comprises a top plate mounted on the double-axial horizontal moving mechanism, a telescopic cover body fixedly connected to the lower side of the top plate, a bottom plate fixedly connected to the lower side of the telescopic cover body, and a winding machine fixedly connected to each of the four end corners of the top plate, wherein a pull rope body is mounted on the winding machine, and the end of the pull rope body is connected to the end of the bottom plate.

[0011] Further, the lower side of the bottom plate is fixedly connected with a sealing ring, and a lower limit seat is fixedly connected to the position outside the battery module on the battery station.

[0012] Further, the sealing ring is a hollow rubber ring, and the hollow rubber ring is communicated with an air pump.

[0013] Further, the inner walls on the two sides of the groove body are fixedly connected with side protrusions.

[0014] Further, the telescopic guide rods are fixedly connected between the top plate and the bottom plate.

[0015] An electric energy management system suitable for photovoltaic storage and charging, comprising an electric energy management device, a control unit, a sensor module, and an interface module.

[0016] The control unit is configured to receive sensor module signals and issue control instructions.

[0017] The sensor module comprises temperature sensors, position sensors, and current / voltage sensors.

[0018] A plurality of temperature sensors are arranged inside the outer casing, inside the movable isolation cover, and on the surface of the battery module; the position sensors are mounted on the movable isolation cover; and the current / voltage sensors are electrically connected to the conductive components.

[0019] The interface module comprises a photovoltaic component interface, a power grid interface, a load interface, and a communication interface.

[0020] The technical effects achieved by the present application are as follows:

[0021] The electric energy management device and system suitable for photovoltaic storage and charging can partition and set the temperature of the battery modules in storage and operation states by setting a movable isolation cover, so that the battery modules in both storage and operation states have a good environmental temperature. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present application;

[0023] Figure 2 is a structural schematic diagram of the present application;

[0024] Figure 3 is a local enlarged view of the present application;

[0025] Figure 4 is a cutaway structure schematic view of the present application mobile isolation cover;

[0026] Figure 5 is a cutaway structure schematic view of the present application Figure 4 at A;

[0027] Figure 6 is a cutaway structure schematic view of the present application Figure 4 at B.

[0028] In the drawings, the components represented by each reference numeral are listed as follows:

[0029] 1, outer shell; 2, power connection group; 3, first temperature control mechanism; 4, second temperature control mechanism; 5, battery module; 6, double-axis horizontal movement mechanism; 7, top plate; 8, telescopic cover body; 9, bottom plate; 10, winding machine; 11, pull rope body; 12, telescopic guide rod; 13, lower limit seat; 14, groove body; 15, side protrusion; 16, sealing ring; 17, magnet; 18, electric telescopic rod; 19, mounting plate; 20, first power connection terminal; 21, second power connection terminal. DETAILED DESCRIPTION

[0030] In order to make the purpose and advantages of the present application more clear and obvious, the present application is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the present application, and does not strictly limit the specific protection scope requested by the present application.

[0031] As Figures 1-6As shown, an electric energy management device suitable for photovoltaic storage and charging includes an outer casing 1, the inside of the outer casing 1 is provided with a plurality of battery stations in a rectangular array, a plurality of battery modules 5 are fixedly connected on the plurality of battery stations, the inside of the outer casing 1 is provided with a movable movable isolation cover, the movable isolation cover can be covered outside any battery module 5, at this time, a sealed space is formed in the inside of the outer casing 1, so that the battery module 5 inside the movable isolation cover is separated from the remaining battery modules 5, at this time, two areas are formed in the inside of the outer casing 1, one of which is a storage area, and the inside of the movable isolation cover is a running area, at this time, the battery module 5 in use is located inside the movable isolation cover, and the running temperature of the battery module 5 during operation can be ensured by adjusting the temperature inside the movable isolation cover, the remaining battery modules 5 are located inside the storage area, and the storage temperature of the battery module 5 during storage can be ensured by adjusting the temperature inside the storage area, by partitioning and setting the temperature of the partition, the battery module 5 in the storage state and the running state can be relatively simply provided with a good environmental temperature.

[0032] Among them, the outside of the outer casing 1 is fixedly connected with an electricity connection group 2, the electricity connection group 2 is electrically connected with the battery module 5 located inside the movable isolation cover through a conductive component;

[0033] Among them, the outside of the outer casing 1 is fixedly connected with a first temperature regulation mechanism 3 and a second temperature regulation mechanism 4, the first temperature regulation mechanism 3 is in communication with the outer casing 1, and is used for adjusting the environmental temperature inside the outer casing 1, and the second temperature regulation mechanism 4 is in communication with the movable isolation cover, and is used for adjusting the temperature inside the movable isolation cover.

[0034] Herein, in some embodiments, the first temperature regulation mechanism 3 and the second temperature regulation mechanism 4 each include a semiconductor temperature controller, a micro fan and a heat sink, and the semiconductor temperature controller can realize "cooling" or "heating" bidirectional adjustment.

[0035] The first temperature regulation mechanism 3 is in communication with the inside of the outer casing 1, and is used for adjusting the temperature of the storage area to be stable at 0℃-25℃; the second temperature regulation mechanism 4 is in communication with the inside of the movable isolation cover, and is used for adjusting the temperature of the running area to be controlled at 15℃-45℃ according to the charging and discharging power of the battery, the micro fan is used for accelerating air circulation, and the heat sink is used for guiding the heat of the heat dissipation end of the semiconductor temperature controller out of the equipment to improve the temperature control efficiency.

[0036] In other embodiments, the first temperature regulation mechanism 3 and the second temperature regulation mechanism 4 each include a small variable frequency air conditioning unit, and the output power is adjusted by frequency conversion to accurately control the temperature of the target area.

[0037] Among them,Figures 1-2 As shown, the upper side of the outer shell 1 is fixedly connected with a double-axial horizontal moving mechanism 6, which is preferably a quilting frame or an XY-axis linear module or a cross slide, driven by a servo motor and transmitted by a ball screw, and can realize the precise movement of the movable isolation cover in the X-axis and Y-axis directions of the horizontal plane, adapting to the switching requirements of the battery station arranged in a rectangular array.

[0038] The movable isolation cover is mounted on the double-axial horizontal moving mechanism 6, and can be moved by the double-axial horizontal moving mechanism 6, so that the movable isolation cover can be simply moved to the outside of any battery module 5.

[0039] As shown, Figures 2-4 The movable isolation cover includes a top plate 7 mounted on the double-axial horizontal moving mechanism 6, the lower side of the top plate 7 is fixedly connected with a telescopic cover body 8, the telescopic cover body 8 can be a rubber telescopic cover or an organ type protective cover, and the material of the organ type protective cover is preferably rubber, rubberized canvas, nylon cloth or flame-retardant PVC, which has good heat preservation, telescopic and flame-retardant properties, and can effectively block the heat exchange between the operation area and the storage area. The lower side of the telescopic cover body 8 is fixedly connected with a bottom plate 9, and the four end corners of the top plate 7 are fixedly connected with a winding machine 10, the winding machine 10 is mounted with a pull rope body 11, the end of the pull rope body 11 is connected with the end of the bottom plate 9, and the pull rope body 11 is wound by the winding machine 10, so that the telescopic cover body 8 can be pulled upward, so that the movable isolation cover can be kept small in thickness after contraction, facilitating the movement of the movable isolation cover above the battery module 5, and reducing the height of the outer shell 1.

[0040] The telescopic guide rod 12 is fixedly connected between the top plate 7 and the bottom plate 9, and the bottom plate 9 can be guided to move vertically stably by the telescopic guide rod 12.

[0041] As shown, Figures 3-5 The lower side of the bottom plate 9 is fixedly connected with a sealing ring 16, and the lower side of the battery station outside the battery module 5 is fixedly connected with a lower limit seat 13, and the lower limit seat 13 is provided with a groove body 14 matched with the sealing ring 16, and the sealing property between the bottom plate 9 and the outer shell 1 can be improved by filling the sealing ring 16 into the groove body 14.

[0042] In some embodiments, the lower limit seat 13 is fixedly connected with a magnet 17, and the position opposite to the magnet 17 on the bottom plate 9 is provided with iron, and the bottom plate 9 can be subjected to magnetic attraction by the magnet 17, so that the sealing ring 16 and the lower limit seat 13 are tightly fitted, and the phenomenon of accidental falling of the sealing ring 16 from the groove body 14 is reduced.

[0043] In some embodiments, the sealing ring 16 is a solid or hollow rubber ring.

[0044] In some other embodiments, the sealing ring 16 is a hollow rubber ring, and a gas pump is communicated with the hollow rubber ring, which can be installed on the bottom plate 9, and when the bottom plate 9 is lowered, the inside of the sealing ring 16 is extracted by the gas pump, so that the sealing ring 16 is contracted in volume, and the sealing ring 16 can be more simply dropped into the groove body 14; after the sealing ring 16 enters the groove body 14, the sealing ring 16 can be inflated by the gas pump, so that the sealing ring 16 is expanded in volume, fills the gap in the groove body 14, and ensures the sealing.

[0045] As shown in Figure 5 , the inner walls on both sides of the groove body 14 are fixedly connected with side protrusions 15, and the shape of the sealing ring 16 after expansion can be adjusted by the side protrusions 15, and the shape of the sealing ring 16 after forming can be changed.

[0046] As shown in Figures 3-4 and Figure 6 , the conductive assembly includes an electric telescopic rod 18 fixedly connected to the top plate 7, the output end of the electric telescopic rod 18 is fixedly connected with a mounting plate 19 located on the lower side of the top plate 7, the lower side of the mounting plate 19 is fixedly connected with a first electric terminal 20, the first electric terminal 20 is electrically connected with the electric connection group 2, and the upper side of the battery module 5 is fixedly connected with a second electric terminal 21, and the electric connection between the battery module 5 and the electric connection group 2 is completed by abutting the first electric terminal 20 and the second electric terminal 21.

[0047] The working principle of the application is as follows:

[0048] All the battery modules 5 are in the storage area, the movable isolation cover is contracted and parked on one side of the equipment, the first temperature regulating mechanism 3 is started, and the temperature of the storage area is adjusted to 0℃-25℃ and maintained.

[0049] According to the photovoltaic power output power, load demand or background instruction, the battery module 5 to be started is determined, and a command is issued to the double-shaft horizontal moving mechanism 6, the movable isolation cover is moved to the target battery module 5 directly above, the pull rope body 11 is released by the winding machine 10, the bottom plate 9 is lowered under the guidance of the telescopic guide rod 12, the sealing ring 16 is aligned with the groove body 14 of the lower limit seat 13, the gas pump is started, the sealing ring 16 is vacuumized to be contracted, and the sealing ring 16 is easily dropped into the groove body 14; after reaching the position, the gas pump is inflated to expand the sealing ring 16, the sealing ring 16 is tightly combined with the groove body 14 and the side protrusion 15, the sealing is realized, and the independent operation area is formed.

[0050] The electric telescopic rod 18 is elongated, the mounting plate 19 is lowered, the first electric terminal 20 is in close contact with the second electric terminal 21 of the battery module 5, and the electric connection is completed; a current / voltage sensor can be installed to monitor the contact state in real time, and the stable power supply is ensured.

[0051] The second temperature regulating mechanism 4 is started to adjust the operating area temperature according to the battery charging and discharging state, and a temperature sensor can be installed inside the movable isolation cover to realize closed-loop control through temperature sensor feedback.

[0052] An electric energy management system includes an electric energy management device, a control unit, a sensor module and an interface module.

[0053] The control unit is preferably a PLC, which receives sensor module signals, issues control instructions and coordinates the work of various components.

[0054] The sensor module includes temperature sensors, position sensors, pressure sensors and current / voltage sensors. Multiple temperature sensors are arranged inside the outer casing 1, inside the movable isolation cover and on the surface of the battery module 5. The position sensor is installed on the movable isolation cover to detect the positioning state of the movable isolation cover. The current / voltage sensor is electrically connected to the conductive component to monitor the charging and discharging parameters of the battery module 5. The pressure sensor is installed on the sealing ring 16 to monitor the inflation pressure of the sealing ring 16.

[0055] The interface module includes a photovoltaic component interface, a power grid interface, a load interface and a communication interface.

[0056] The photovoltaic component interface is used to connect with photovoltaic panels to receive photovoltaic electric energy.

[0057] The power grid interface is used to connect with the commercial power grid to realize grid-connected charging and discharging and power grid energy supplementing functions.

[0058] The load interface is used to connect with electric vehicle charging piles and industrial loads to output stable electric energy.

[0059] The communication interface is used to communicate with the photovoltaic storage and charging system background monitoring center to upload device operating status and receive remote control instructions, and can support RS485, CAN, Ethernet or wireless communication (4G / 5G, Wi-Fi).

[0060] The above is only the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, several improvements and refinements can be made, which should also be considered within the scope of protection of the present application. Structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to conventional means in the art.

Claims

1. An electrical energy management device suitable for photovoltaic storage and charging, characterized by: The application relates to an electric energy management device, which comprises an outer casing (1), the inside of the outer casing (1) is provided with a plurality of battery stations arranged in a rectangular array, and a plurality of battery modules (5) are fixedly connected to the battery stations; The inside of the outer casing (1) is provided with a movable movable isolation cover, and the movable isolation cover can cover the outside of any battery module (5); The outside of the outer casing (1) is fixedly connected with an electricity connection group (2), the electricity connection group (2) is electrically connected with the battery module (5) in the movable isolation cover through a conductive assembly; The outside of the outer casing (1) is fixedly connected with a first temperature regulation mechanism (3) and a second temperature regulation mechanism (4), the first temperature regulation mechanism (3) is communicated with the outer casing (1), and the second temperature regulation mechanism (4) is communicated with the movable isolation cover.

2. The electrical energy management device suitable for photovoltaic storage and charging according to claim 1, characterized in that: The upper side of the inside of the outer casing (1) is fixedly connected with a double-axial horizontal moving mechanism (6), and the movable isolation cover is installed on the double-axial horizontal moving mechanism (6).

3. The electrical energy management device of claim 1, wherein: The movable isolation cover comprises a top plate (7) installed on the double-axial horizontal moving mechanism (6), the lower side of the top plate (7) is fixedly connected with a telescopic cover body (8), the lower side of the telescopic cover body (8) is fixedly connected with a bottom plate (9), four end corners of the top plate (7) are fixedly connected with winding machines (10), the winding machines (10) are installed with pull rope bodies (11), and the end of the pull rope body (11) is connected with the end of the bottom plate (9).

4. The electrical energy management device suitable for photovoltaic storage and charging according to claim 3, characterized in that: The telescopic cover body (8) is a rubber telescopic cover or an organ type protective cover.

5. The electrical energy management device suitable for photovoltaic storage and charging according to claim 3, characterized in that: The lower side of the bottom plate (9) is fixedly connected with a sealing ring (16), the position outside the battery module (5) on the battery station is fixedly connected with a lower limiting seat (13), and a groove body (14) matched with the sealing ring (16) is formed in the lower limiting seat (13).

6. The electrical energy management device suitable for photovoltaic storage and charging according to claim 5, characterized in that: The lower limiting seat (13) is fixedly connected with a magnet (17), and iron is arranged at the position opposite to the magnet (17) on the bottom plate (9).

7. The electrical energy management device suitable for photovoltaic storage and charging according to claim 5, wherein: The sealing ring (16) is a hollow rubber ring, and the hollow rubber ring is communicated with an air pump.

8. The electrical energy management device suitable for photovoltaic storage and charging according to claim 7, characterized in that: The inner walls on the two sides of the groove body (14) are fixedly connected with side protrusions (15).

9. The electrical energy management device suitable for photovoltaic storage and charging according to claim 8, characterized in that: The telescopic guide rods (12) are fixedly connected between the top plate (7) and the bottom plate (9).

10. An electrical energy management system suitable for photovoltaic storage and charging, characterized in that: The application further discloses an electric energy management device and a control unit, a sensor module and an interface module. The control unit is used for receiving sensor module signals and issuing control instructions. The sensor module comprises temperature sensors, position sensors and current / voltage sensors. The temperature sensors are arranged in the inside of the outer casing (1), the inside of the movable isolation cover and the surface of the battery module (5); the position sensors are installed on the movable isolation cover; and the current / voltage sensors are electrically connected with the conductive assembly. The interface module comprises a photovoltaic assembly interface, a power grid interface, a load interface and a communication interface.

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