Energy storage device

Abstract

The utility model discloses energy storage equipment which comprises a first box body, a transformer and a first function cabinet. The first box body is provided with a first containing cavity and a second containing cavity, and the first containing cavity and the second containing cavity are spaced in the length direction of the first box body. The transformer is arranged in the first containing cavity. The first function cabinet is arranged in the second containing cavity, the first function cabinet comprises a metering module and a wire outlet module, the metering module and the wire outlet module are connected in series, and the metering module and the wire outlet module are arranged in the height direction of the first box body. According to the energy storage equipment provided by the utility model, the occupied space of the wire outlet module and the metering module is reduced, the structural arrangement of the energy storage equipment is facilitated, the occupied area of the energy storage equipment is reduced, and the expenditure and the cost of the energy storage equipment are saved.

Description

Technical Field

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

[0002] The traditional energy storage system converter and booster are two independent devices in the primary equipment compartment. The converter and booster integrates multiple functional cabinets, and the incoming cabinet, outgoing cabinet, PT cabinet, and metering cabinet required for grid connection need to be added. However, the outgoing module and metering module in the energy storage device are located in different functional cabinets, and the same functional components exist in the outgoing module and the metering module, resulting in component redundancy, increasing the occupied space, and also increasing the cost of the energy storage device. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an energy storage device that reduces the space occupied by the outlet module and the metering module, is beneficial to the structural arrangement of the energy storage device, reduces the floor space of the energy storage device, and saves the expense and cost of the energy storage device.

[0004] The energy storage device according to the embodiment of the utility model includes: a first box body, the first box body has a first accommodating cavity and a second accommodating cavity, the first accommodating cavity and the second accommodating cavity are spaced apart along the length direction of the first box body; a transformer, the transformer is arranged in the first accommodating cavity; a first functional cabinet, the first functional cabinet is arranged in the second accommodating cavity, the first functional cabinet includes a metering module and an outlet module, the metering module and the outlet module are connected in series, and the metering module and the outlet module are arranged along the height direction of the first box body.

[0005] According to the energy storage device of the embodiment of the utility model, the outlet module and the metering module are placed in the first functional cabinet, so that the outlet module and the metering module are integrated. Therefore, compared with the traditional energy storage device, the space occupied by the outlet module and the metering module is reduced, which is beneficial to the structural arrangement of the energy storage device, reduces the floor space of the energy storage device, and saves the cost of the energy storage device.

[0006] According to some embodiments of the present utility model, the metering module includes a first current transformer and a first voltage transformer, and the first current transformer and the first voltage transformer are connected in parallel; the output module includes a first display, and the first display is connected in series with the first current transformer.

[0007] According to some embodiments of the present invention, the metering module further includes a first fuse, which is connected in series with the first voltage transformer.

[0008] According to some embodiments of the present invention, the output line module further includes a first lightning arrester, and the first lightning arrester is electrically connected to the first display.

[0009] According to some embodiments of the utility model, a partition is provided in the second accommodating chamber, and the partition divides the second accommodating chamber into a first sub-chamber and a second sub-chamber arranged along the width direction of the first box body, the first functional cabinet is provided in the first sub-chamber, and the second sub-chamber is provided with a low-voltage cabinet.

[0010] According to some embodiments of the utility model, the energy storage device also includes: a second functional cabinet, the second functional cabinet is arranged in the first sub-cavity and electrically connected to the first functional cabinet, the second functional cabinet includes an isolating switch, a circuit breaker, a second display and a second current transformer, and the isolating switch, the circuit breaker, the second display and the second current transformer are connected in series.

[0011] According to some embodiments of the present invention, the interior of the second functional cabinet is filled with an inert gas.

[0012] According to some embodiments of the utility model, the energy storage device also includes: a second box body, the box body having a third accommodating cavity; multiple battery modules, the multiple battery modules are all arranged in the third accommodating cavity; an energy storage inverter, the energy storage inverter is arranged in the third accommodating cavity, and the energy storage inverter is electrically connected to the second functional cabinet and the multiple battery modules respectively.

[0013] According to some embodiments of the present invention, the second box is located on a side of the transformer away from the second accommodating cavity, and the energy storage converter is located between the battery module and the transformer.

[0014] According to some embodiments of the present invention, the length of the transformer in the length direction of the first box is L, the width of the transformer in the width direction of the first box is W, and the height of the transformer in the height direction of the first box is H, wherein L, W and H respectively satisfy: 1m≤L≤2m, 2m≤W≤2.8m, 2.2m≤H≤2.8m.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1is a schematic diagram of an energy storage device according to an embodiment of the utility model;

[0018] Figure 2 is a schematic diagram of an energy storage device according to an embodiment of the utility model from another angle;

[0019] Figure 3 is a schematic diagram of an energy storage device according to an embodiment of the utility model from another angle;

[0020] Figure 4 It is a circuit diagram of an energy storage device according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] 100. Energy storage equipment;

[0023] 1. First box; 11. First accommodating chamber; 111. Transformer; 12. Second accommodating chamber; 2. First functional cabinet; 21. Metering module; 211. First current transformer; 212. First voltage transformer; 213. First fuse; 22. Outlet module; 221. First display; 222. First lightning arrester; 121. Partition; 1211. First sub-chamber; 3. Second functional cabinet; 31. Disconnector; 32. Circuit breaker; 33. Second display; 34. Second current transformer; 1212. Second sub-chamber; 4. Low-voltage cabinet; 5. Second box; 51. Third accommodating chamber; 6. Battery module; 7. Energy storage converter; 8. Third functional cabinet. DETAILED DESCRIPTION

[0024] Reference below Figure 1-Figure 4 An energy storage device 100 according to an embodiment of the present invention is described.

[0025] like Figure 1-Figure 4 As shown, the energy storage device 100 according to the embodiment of the utility model includes a first box body 1, a transformer 111 and a first functional cabinet 2.

[0026] The first housing 1 has a first accommodating cavity 11 and a second accommodating cavity 12. The first accommodating cavity 11 and the second accommodating cavity 12 are arranged along the length direction of the first housing 1 (for example, Figure 1 The transformer 111 is disposed in the first accommodating chamber 11. The first functional cabinet 2 is disposed in the second accommodating chamber 12. The first functional cabinet 2 includes a metering module 21 and an outlet module 22. The metering module 21 and the outlet module 22 are connected in series, and the metering module 21 and the outlet module 22 are arranged along the height direction of the first box body 1.

[0027] For example, in Figure 1-Figure 4In the example, the first accommodation chamber 11 is disposed in the middle of the energy storage device 100. The energy storage device 100 has a first direction, a second direction, and a third direction. The length direction of the energy storage device 100 (for example, Figure 1 The width direction of the energy storage device 100 (for example, Figure 1 The height direction of the energy storage device 100 (for example, Figure 2 The first functional cabinet 2 is arranged on one side of the second accommodating chamber 12 in the second direction. The metering module 21 is located on one side of the height direction of the outlet module 22. The metering module 21 is used to measure electric energy, and the outlet module 22 can distribute the main power supply to the switches of each power branch circuit, and play the role of overcurrent and overload protection for each branch circuit and connecting or disconnecting the branch circuit power supply.

[0028] In conventional energy storage devices, the metering module 21 and the outgoing line module 22 are respectively located in different functional cabinets, which increases the number of functional cabinets and the occupied space of the functional cabinets.

[0029] In the present application, the outlet module 22 and the metering module 21 are integrated by placing them in the first functional cabinet 2, and the size of the original first functional cabinet 2 is not changed, thereby reducing the space occupied by the outlet module 22 and the metering module 21, and also reducing the floor space of the energy storage device 100, thereby saving the cost of the energy storage device 100 and reducing the initial investment cost of the energy storage device 100.

[0030] According to the energy storage device 100 of the embodiment of the utility model, the outlet module 22 and the metering module 21 are placed in the first functional cabinet 2, thereby realizing the integration of the outlet module 22 and the metering module 21. Therefore, compared with the traditional energy storage device, the space occupied by the outlet module 22 and the metering module 21 is reduced, which is beneficial to the structural arrangement of the energy storage device 100, reduces the floor space of the energy storage device 100, and saves the expense and cost of the energy storage device 100.

[0031] According to some embodiments of the utility model, the metering module 21 includes a first current transformer 211 and a first voltage transformer 212, and the first current transformer 211 and the first voltage transformer 212 are connected in parallel. The outlet module 22 includes a first display 221, and the first display 221 is connected in series with the first current transformer 211. The principle of the first current transformer 211 is based on the principle of electromagnetic induction. The first current transformer 211 is composed of a closed iron core and a winding. The function of the first current transformer 211 is to convert a primary current with a larger value into a secondary current with a smaller value through a certain transformation ratio, which is used for protection, measurement and other purposes. The first voltage transformer 212 converts the high voltage into a standard secondary voltage of 100V or lower in proportion for use in protection, metering, and instrumentation devices.

[0032] Reference Figure 4 The first voltage transformer 212 is separated from the main line as a branch of the circuit and connected in parallel with the first current transformer 211. In this way, the first voltage transformer 212 and the first current transformer 211 can respectively protect and measure the voltage and current in the circuit to protect the safety of the circuit.

[0033] Furthermore, the metering module 21 further includes a first fuse 213, and the first fuse 213 is connected in series with the first voltage transformer 212. Figure 1-Figure 4 As shown, the function of the first fuse 213 is to provide current protection for the first voltage transformer 212 and the first current transformer 211. The first fuse 213 is composed of a fuse and a fuse tube, and is connected in series in the circuit as a metal conductor. When the current exceeds a certain value, the first fuse 213 will generate heat to melt its fuse, thereby disconnecting the current or voltage to achieve a protective effect. In the circuit of the first functional cabinet 2, the first lightning arrester 222 and the first display 221 are arranged on one side of the first current transformer 211. Such an arrangement enables the metering module 21 to work normally, protects the metering module 21, and prolongs the service life of the metering module 21.

[0034] According to some embodiments of the utility model, the outlet module 22 also includes a first lightning arrester 222, and the first lightning arrester 222 is electrically connected to the first display 221. The first lightning arrester 222 can be used to protect the energy storage device 100 from the hazards of high transient overvoltage caused by lightning strikes, and limit the continuous current time, and can also limit the continuous current amplitude. The first display 221 allows the operator to operate and protect the operator's work safety. Such a setting improves the safety of the energy storage device 100 and also improves the safety of the operator when operating the energy storage device 100.

[0035] According to some embodiments of the utility model, a partition 121 is provided in the second accommodating chamber 12, and the partition 121 divides the second accommodating chamber 12 into a first sub-chamber 1211 and a second sub-chamber 1212 arranged along the width direction of the first box body 1, and the first sub-chamber 1211 is provided with a first functional cabinet 2, and the second sub-chamber 1212 is provided with a low-voltage cabinet 4. Figure 1-Figure 4 As shown, the partition 121 extends along the first direction. The first sub-cavity 1211 and the second sub-cavity 1212 are arranged along the second direction. The low-voltage cabinet 4 is arranged on the side of the second sub-cavity 1212 away from the partition 121. The low-voltage cabinet 4 is used for power distribution output. In this way, the space in the second accommodating cavity 12 is reasonably arranged, and the space utilization rate of the second accommodating cavity 12 is improved.

[0036] According to some embodiments of the present utility model, the energy storage device 100 further includes a second functional cabinet 3, which is disposed in the first sub-cavity 1211 and is electrically connected to the first functional cabinet 2, and the second functional cabinet 3 includes an isolating switch 31, a circuit breaker 32, a second display 33, and a second current transformer 34, and the isolating switch 31, the circuit breaker 32, the second display 33, and the second current transformer 34 are connected in series. Figure 1-Figure 4 In the example, the second function cabinet 3 is arranged on the side of the first function cabinet 2 adjacent to the first accommodation cavity 11. The series circuit of the components in the second function cabinet 3 is connected in series with the series circuit of the first function cabinet 2. The isolating switch 31 and the circuit breaker 32 can control the on and off of the circuit of the second function cabinet 3. The second current transformer 34 is used for current protection, measurement, etc. The second display 33 allows the operator to operate and protect the operator's work safety.

[0037] Furthermore, the interior of the second functional cabinet 3 is filled with an inert gas. Figure 1 , the second function cabinet 3 can be insulated by filling inert gas to prevent leakage. Specifically, the second function cabinet 3 can adopt an inflatable cabinet, which can reduce the space occupied by the second function cabinet 3 and shorten the gap between the second function cabinet 3 and the first function cabinet 2. However, the cost of the inflatable cabinet is relatively high. The first function cabinet 2 adopts an air cabinet, which is arranged in a combination of an air cabinet and an inflatable cabinet. Such an arrangement can not only meet the need to reduce the space occupied by the second function cabinet 3, but also save the cost of the energy storage device 100.

[0038] In addition, if Figure 1 As shown, the energy storage device 100 further includes a third function cabinet 8. The third function cabinet 8 is located in the first sub-cavity 1211 and is electrically connected to the first function cabinet 2 and the second function cabinet 3. The third function cabinet 8 is located on a side of the second function cabinet 3 away from the first function cabinet 2. The third function cabinet 8 is used for voltage collection.

[0039] According to some embodiments of the utility model, the energy storage device 100 further includes a second box body 5, a plurality of battery modules 6 and an energy storage converter 7. In the description of the utility model, "plurality" means two or more. The second box body 5 has a third accommodating cavity 51. The plurality of battery modules 6 are arranged in the third accommodating cavity 51. The energy storage converter 7 is arranged in the third accommodating cavity 51, and the energy storage converter 7 is electrically connected to the second functional cabinet 3 and the plurality of battery modules 6, respectively. Figure 1-Figure 4 As shown, the second box 5 is arranged on one side of the first box 1 in the first direction. The number of the battery modules 6 can be three. The battery module 6 is connected in series with the energy storage converter 7, and the battery module 6 supplies power to the energy storage converter 7.

[0040] The energy storage converter 7 can respond to load fluctuations through rapid electrical energy storage, absorb excess energy or supplement insufficient energy, realize high-power dynamic regulation, and adapt well to frequency regulation and voltage power factor correction, thereby improving the stability of system operation. The other end of the energy storage converter 7 is connected in series with the second functional cabinet 3. This arrangement enables the energy storage device 100 to work normally, and can measure and protect the current and voltage of the circuit, etc. At the same time, the spatial structure and arrangement of the energy storage device 100 are reasonable, reducing the floor space of the energy storage device 100.

[0041] Furthermore, the second box 5 is located on a side of the transformer 111 away from the second accommodating cavity 12, and the energy storage converter 7 is located between the battery module 6 and the transformer 111. Figure 1-Figure 2 In the example, the second box 5 is located at one end of the energy storage device 100 in the first direction. The energy storage converter 7 is connected to the battery module 6 and the transformer 111, so that the battery module 6 can supply power to the energy storage converter 7, and the transformer 111 can change the input voltage so that the energy storage device 100 can work normally.

[0042] According to some embodiments of the present invention, the length of the transformer 111 in the length direction of the first box 1 is L, the width of the transformer 111 in the width direction of the first box 1 is W, and the height of the transformer 111 in the height direction of the first box 1 is H, wherein L, W and H respectively satisfy: 1m≤L≤2m, 2m≤W≤2.8m, 2.2m≤H≤2.8m. Figure 1 When the length of transformer 111 is less than 1m, the width is less than 2m, and the height is less than 2.2m, the length, width, and height of transformer 111 are all small, and the size of transformer 111 is small, which cannot meet the functional requirements of transformer 111. When the length of transformer 111 is greater than 2m, the width is greater than 2.8m, and the height is greater than 2.8m, the length, width, and height of transformer 111 are all large, and the size of transformer 111 is large. The area occupied by transformer 111 is also large, and the weight increases, which is not conducive to the structural layout of energy storage device 100.

[0043] As a result, L, W and H of the transformer 111 respectively satisfy: 1m≤L≤2m, 2m≤W≤2.8m, 2.2m≤H≤2.8m, so that the size of the transformer 111 is reasonable, the weight of the transformer 111 is reduced, the spatial arrangement of the transformer 111 is facilitated, the occupied area of ​​the transformer 111 is reduced, the transformer 111 can work normally, and the structural layout of the energy storage device 100 is facilitated.

[0044] Other structures and operations of the energy storage device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An energy storage device, characterized in that: include: A first box body, the first box body having a first accommodating cavity and a second accommodating cavity, the first accommodating cavity and the second accommodating cavity are spaced apart along a length direction of the first box body; A transformer, wherein the transformer is disposed in the first accommodating cavity; A first functional cabinet is arranged in the second accommodating cavity, the first functional cabinet comprises a metering module and an outlet module, the metering module and the outlet module are connected in series, and the metering module and the outlet module are arranged along the height direction of the first box body.

2. The energy storage device according to claim 1, characterized in that: The metering module includes a first current transformer and a first voltage transformer, wherein the first current transformer and the first voltage transformer are connected in parallel; The output line module includes a first display, and the first display is connected in series with the first current transformer.

3. The energy storage device according to claim 2, characterized in that: The metering module further includes a first fuse connected in series with the first voltage transformer.

4. The energy storage device according to claim 2, characterized in that: The output line module further includes a first lightning arrester, and the first lightning arrester is electrically connected to the first display.

5. The energy storage device according to any one of claims 1 to 4, characterized in that: A partition is provided in the second accommodating chamber, and the partition divides the second accommodating chamber into a first sub-chamber and a second sub-chamber arranged along the width direction of the first box body. The first functional cabinet is provided in the first sub-chamber, and the low-voltage cabinet is provided in the second sub-chamber.

6. The energy storage device according to claim 5, characterized in that: Also includes: A second functional cabinet is arranged in the first sub-cavity and is electrically connected to the first functional cabinet, the second functional cabinet comprises an isolating switch, a circuit breaker, a second display and a second current transformer, the isolating switch, the circuit breaker, the second display and the second current transformer are connected in series.

7. The energy storage device according to claim 6, characterized in that: The interior of the second functional cabinet is filled with inert gas.

8. The energy storage device according to claim 6, characterized in that: Also includes: A second box body, the box body having a third accommodating cavity; A plurality of battery modules, wherein the plurality of battery modules are arranged in the third accommodating cavity; An energy storage converter, wherein the energy storage converter is disposed in the third accommodating cavity, and the energy storage converter is electrically connected to the second functional cabinet and the plurality of battery modules respectively.

9. The energy storage device according to claim 8, characterized in that: The second box is located on a side of the transformer away from the second accommodating cavity, and the energy storage converter is located between the battery module and the transformer.

10. The energy storage device according to claim 1, characterized in that: The length of the transformer in the length direction of the first box is L, the width of the transformer in the width direction of the first box is W, and the height of the transformer in the height direction of the first box is H, wherein L, W and H respectively satisfy: 1m≤L≤2m, 2m≤W≤2.8m, 2.2m≤H≤2.8m.

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