Energy storage, conversion and boosting all-in-one machine

Abstract

The utility model discloses an energy storage, current transformation and voltage boosting all-in-one machine which comprises a base, a transformer, a high-voltage chamber, a low-voltage chamber and an energy storage current transformer, the transformer is arranged on the base, and a high-voltage sleeve and a low-voltage sleeve are arranged on the two opposite sides of the transformer respectively. The transformer comprises an iron core, a low-voltage coil wound outside the iron core and a high-voltage coil wound outside the low-voltage coil, the low-voltage coil is connected to the low-voltage sleeve through a low-voltage lead, and the high-voltage coil is connected to the high-voltage sleeve through a high-voltage lead; the high-voltage chamber is arranged on the base and located on the side, provided with the high-voltage bushing, of the transformer. The high-voltage bushing extends into the high-voltage chamber and is connected with the vacuum circuit breaker. The low-voltage chamber and the high-voltage chamber are arranged side by side; the low-voltage bushing is connected to the universal circuit breaker through a main circuit line; and the energy storage converter is connected to the low-voltage bushing. The internal structure of the energy storage, conversion and boosting all-in-one machine is compact, the arrangement is reasonable, the usage amount of copper bars can be saved, the electrical loss is reduced, and the occupied area is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an energy storage, current conversion and voltage boosting integrated machine. Background Art

[0002] With the rapid development of the photovoltaic industry, the overall capacity of photovoltaic power generation devices has continued to grow, and the electrical equipment supporting it has also been widely used. The energy storage converter booster is an integrated electrical device that combines energy storage, conversion, voltage regulation and other functions. However, due to the unreasonable selection of internal equipment and structural settings, the existing energy storage converter booster has a large number of copper bars required to connect the transformer and the energy storage converter and high and low voltage switches in the energy storage converter booster, resulting in high electrical losses in the equipment and a large area occupied by the equipment. Utility Model Content

[0003] The main purpose of the utility model is to provide an integrated energy storage and converter, aiming to solve the technical problems in the prior art of unreasonable internal equipment selection and structural setting of the integrated energy storage and converter, resulting in high electrical loss of the equipment and a large equipment footprint.

[0004] To achieve the above-mentioned purpose, the utility model proposes an integrated energy storage converter and booster, comprising a base, a transformer, a high-voltage chamber, a low-voltage chamber, and an energy storage converter, wherein the transformer is arranged on the base, and high-voltage bushings and low-voltage bushings are arranged on opposite sides of the transformer, respectively, and the transformer comprises an iron core, a low-voltage coil wound outside the iron core, and a high-voltage coil wound outside the low-voltage coil, wherein the low-voltage coil is connected to the low-voltage bushing through a low-voltage lead, and the high-voltage coil is connected to the high-voltage bushing through a high-voltage lead; the high-voltage chamber is arranged on the base and is located at the The transformer is provided with a side of the high-voltage bushing, a vacuum circuit breaker is provided in the high-voltage chamber, the high-voltage bushing extends into the high-voltage chamber and is connected to the vacuum circuit breaker; the low-voltage chamber is provided on the side of the base where the high-voltage chamber is located, the low-voltage chamber and the high-voltage chamber are arranged side by side, a universal circuit breaker is provided in the low-voltage chamber, and the low-voltage bushing is connected to the universal circuit breaker through a main circuit line; the energy storage converter is provided on the base and is located on the side of the transformer where the low-voltage bushing is provided, and the energy storage converter is connected to the low-voltage bushing.

[0005] Optionally, the transformer is an oil-immersed transformer, the iron core, the low-voltage coil and the high-voltage coil are all installed in an oil tank, and the wall of the oil tank is provided with holes for the high-voltage bushing and the low-voltage bushing to pass through.

[0006] Optionally, the transformer further includes a fixing member and a connecting member, wherein the fixing member is used to fix the high-voltage coil, the low-voltage coil and the iron core to form a body structure; and the connecting member fixes the body structure in the oil tank.

[0007] Optionally, a high-pressure panel and a low-pressure panel are provided on the tank wall of the oil tank close to the high-pressure chamber, the high-pressure panel is bolted to the high-pressure chamber, and the low-pressure panel is bolted to the low-pressure chamber.

[0008] Optionally, an insulating support is provided on the high-voltage panel, and the insulating support extends in a direction away from the oil tank and extends into the high-voltage chamber, and the high-voltage bushing passes through the hole and is sleeved on the insulating support.

[0009] Optionally, a low-voltage cabinet is provided in the low-voltage chamber, the universal circuit breaker is located in the low-voltage cabinet, and a measurement and control device connected to the universal circuit breaker and the vacuum circuit breaker is provided in the low-voltage cabinet.

[0010] Optionally, a dry-type transformer and an uninterruptible power supply are also provided in the low-voltage cabinet, the low-voltage bushing is connected to the dry-type transformer and the measurement and control device in sequence through a branch circuit, and the universal circuit breaker is electrically connected to the uninterruptible power supply.

[0011] Optionally, the iron core is an amorphous alloy three-dimensional wound iron core.

[0012] Optionally, the high-voltage coil and the low-voltage coil are both made of aluminum.

[0013] The energy storage converter and booster proposed in the utility model is configured by arranging the high-voltage chamber and the energy storage converter on opposite sides of the transformer, and connecting them to the high-voltage bushing and the low-voltage bushing on opposite sides of the transformer respectively. The low-voltage chamber is arranged side by side on one side of the high-voltage chamber, and vacuum circuit breakers and universal circuit breakers are arranged in the high-voltage chamber and the low-voltage chamber respectively. The distance between the transformer and the energy storage converter, the vacuum circuit breaker and the universal circuit breaker is short, which can save the use of copper bars and reduce electrical losses. The vacuum circuit breaker and the universal circuit breaker provide dual protection for the transformer, thereby extending the life cycle of the equipment. The energy storage converter and booster is compact inside and has a reasonable structural layout, which effectively reduces the floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 It is a top view schematic diagram of an energy storage, current conversion and boosting integrated machine according to an embodiment of the utility model;

[0016] Figure 2 It is a side view schematic diagram of an energy storage, current conversion and boosting integrated machine according to an embodiment of the utility model;

[0017] Figure 3 The present invention is a schematic structural diagram of a transformer of an integrated energy storage, current conversion and voltage boosting machine according to an embodiment of the present invention.

[0018] Description of Figure Numbers:

[0019] Label name Label name 10 Base 25 Low pressure bushing 20 transformer 26 Insulation support 21 Iron Core 30 High Pressure Chamber 22 High voltage coil 40 Low pressure room 23 Low voltage coil 50 Energy Storage Converter 24 High voltage bushing

[0020] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0025] The utility model proposes an energy storage converter and booster integrated machine, including a base 10, a transformer 20, a high-voltage chamber 30, a low-voltage chamber 40, and an energy storage converter 50. The transformer 20 is arranged on the base 10, and high-voltage bushings 24 and low-voltage bushings 25 are respectively arranged on opposite sides of the transformer 20. The transformer 20 includes an iron core 21, a low-voltage coil 23 wound outside the iron core 21, and a high-voltage coil 22 wound outside the low-voltage coil 23. The low-voltage coil 23 is connected to the low-voltage bushing 25 through a low-voltage lead, and the high-voltage coil 22 is connected to the high-voltage bushing 24 through a high-voltage lead; the high-voltage chamber 30 is arranged on the bottom The base 10 is located on a side of the transformer 20 where a high-voltage bushing 24 is provided, a vacuum circuit breaker is provided in the high-voltage chamber 30, and the high-voltage bushing 24 extends into the high-voltage chamber 30 and is connected to the vacuum circuit breaker; the low-voltage chamber 40 is provided on the side of the base 10 where the high-voltage chamber 30 is located, the low-voltage chamber 40 and the high-voltage chamber 30 are arranged side by side, a universal circuit breaker is provided in the low-voltage chamber 40, and the low-voltage bushing 25 is connected to the universal circuit breaker through a main circuit line; the energy storage converter 50 is provided on the base 10 and is located on a side of the transformer 20 where a low-voltage bushing 25 is provided, and the energy storage converter 50 is connected to the low-voltage bushing 25.

[0026] like Figure 1 and Figure 2As shown, the base 10 is rectangular, the transformer 20 is located in the middle of the base 10 along the length direction of the base 10, the high-voltage chamber 30 and the energy storage converter 50 are respectively located on both sides of the transformer 20 along the length direction of the base 10, and the low-voltage chamber 40 is arranged on one side of the high-voltage chamber 30 along the width direction of the base 10. The high-voltage bushing 24 and the low-voltage bushing 25 of the transformer 20 extend toward the high-voltage chamber 30 and the energy storage converter 50 respectively, and the high-voltage bushing 24 extends into the high-voltage chamber 30 and is connected to the vacuum circuit breaker, and the low-voltage bushing 25 is connected to the energy storage converter 50. At the same time, the low-voltage bushing 25 is connected to the universal circuit breaker in the low-voltage chamber 40 through the main circuit line, so that the vacuum circuit breaker and the universal circuit breaker respectively control the high-voltage current and the low-voltage current of the transformer 20. When the transformer 20 is overloaded or short-circuited, the vacuum circuit breaker and the universal circuit breaker form a double protection, cut off the transformer 20 from the line, and effectively protect the transformer 20. It can be explained that the universal circuit breaker can adopt the intelligent universal circuit breaker in the prior art.

[0027] The energy storage converter and booster integrated machine proposed in the utility model is configured by arranging the high-voltage chamber 30 and the energy storage converter 50 on opposite sides of the transformer 20, and connecting them to the high-voltage bushing 24 and the low-voltage bushing 25 on opposite sides of the transformer 20, respectively. The low-voltage chamber 40 is arranged side by side on one side of the high-voltage chamber 30, and vacuum circuit breakers and universal circuit breakers are arranged in the high-voltage chamber 30 and the low-voltage chamber 40, respectively. The distance between the transformer 20 and the energy storage converter 50, the vacuum circuit breaker and the universal circuit breaker is relatively close, which can save the use of copper bars and reduce electrical losses. The vacuum circuit breaker and the universal circuit breaker provide dual protection for the transformer 20, thereby extending the life cycle of the equipment. The energy storage converter and booster integrated machine is compact inside, with a reasonable structural layout, which effectively reduces the floor space.

[0028] In one embodiment, the transformer 20 is an oil-immersed transformer 20, the iron core 21, the low-voltage coil 23 and the high-voltage coil 22 are all installed in an oil tank, and the wall of the oil tank is provided with holes for the high-voltage bushing 24 and the low-voltage bushing 25 to pass through.

[0029] like Figure 3 As shown, the iron core 21, the low-voltage coil 23 and the high-voltage coil 22 are all immersed in the oil of the oil tank, and the oil fills the gaps between the iron core 21, the low-voltage coil 23 and the high-voltage coil 22, so that the oil plays an insulating and heat dissipating role, ensuring the normal operation of the transformer 20 under a high-voltage environment. The high-voltage bushing 24 and the low-voltage bushing 25 pass through the tank walls on opposite sides of the oil tank and extend outwards, and at the same time, the outer walls of the high-voltage bushing 24 and the low-voltage bushing 25 are tightly fitted with the hole walls, ensuring that the oil tank has good sealing performance.

[0030] In one embodiment, the transformer 20 further includes a fixing member and a connecting member. The fixing member is used to fix the high-voltage coil 22, the low-voltage coil 23 and the iron core 21 to form a body structure; the connecting member fixes the body structure in the oil tank.

[0031] It should be noted that the fixings fix the iron core 21, the low-voltage coil 23 and the high-voltage coil 22 into the device body structure, and provide support for the low-voltage coil 23 and the high-voltage coil 22 through the fixings to prevent the coils from loosening during transportation or use. The connectors connect the two ends of the device body structure to the two sides of the tank wall respectively to fix the device body structure in the tank, prevent the device body structure from moving in the tank and causing a collision with the tank, and effectively improve the structural stability of the energy storage converter booster.

[0032] In one embodiment, a high-pressure panel and a low-pressure panel are provided on the tank wall near the high-pressure chamber 30 , the high-pressure panel is bolted to the high-pressure chamber 30 , and the low-pressure panel is bolted to the low-pressure chamber 40 .

[0033] Furthermore, the low-pressure chamber 40 and the high-pressure chamber 30 are both located on the same side of the oil tank, and a high-pressure panel and a low-pressure panel are provided on the wall of the oil tank close to the high-pressure chamber 30 and the low-pressure chamber 40, and the oil tank is bolted to the high-pressure chamber 30 and the low-pressure chamber 40 through the high-pressure panel and the low-pressure panel respectively, so as to connect the high-pressure chamber 30, the low-pressure chamber 40 and the oil tank into an integrated structure, and the internal structure of the energy storage converter and booster is more compact.

[0034] In one embodiment, an insulating support 26 is disposed on the high voltage panel. The insulating support 26 extends away from the oil tank and extends into the high voltage chamber 30 . The high voltage bushing 24 passes through the hole and is sleeved on the insulating support 26 .

[0035] It is understandable that the insulating support 26 provides support for the high-voltage bushing 24 and separates the high-voltage bushing 24 from the outside of the oil tank. The insulating support 26 has good pressure resistance and anti-pollution performance. Even if the high-voltage bushing 24 is contaminated due to long-term use, it can still ensure good working effect and effectively improve the service life of the energy storage converter and booster.

[0036] In one embodiment, a low-voltage cabinet is provided in the low-voltage chamber 40, the universal circuit breaker is located in the low-voltage cabinet, and a measurement and control device connected to the universal circuit breaker and the vacuum circuit breaker is provided in the low-voltage cabinet.

[0037] The low-voltage cabinet is used to place various devices such as universal circuit breakers and measurement and control devices, and separate each device from the high-voltage chamber 30 and the transformer 20. The measurement and control device can monitor the operating status and various electrical data of the energy storage converter and booster in real time, and control the universal circuit breaker and vacuum circuit breaker according to the collected data. When a fault occurs inside the transformer 20, the measurement and control device controls the universal circuit breaker and the vacuum circuit breaker to disconnect. The vacuum circuit breaker can prevent the faulty transformer 20 from being pressurized again, and the universal circuit breaker can prevent the transformer 20 from being damaged during overload and secondary short circuit, thereby providing double protection for the transformer 20. When the fault of the transformer 20 is eliminated, it is only necessary to re-close the universal circuit breaker and the vacuum circuit breaker to allow the energy storage converter and booster to continue to operate normally, saving the steps and costs of replacing fuses in conventional structures.

[0038] In one embodiment, a dry-type transformer 20 and an uninterruptible power supply are also provided in the low-voltage cabinet, the low-voltage bushing 25 is sequentially connected to the dry-type transformer 20 and the measurement and control device through a branch circuit, and the universal circuit breaker is electrically connected to the uninterruptible power supply.

[0039] Furthermore, the dry-type transformer 20 on the branch circuit converts the voltage delivered by the low-voltage bushing 25 into the voltage required by the measurement and control device, so that the transformer 20 directly supplies power to the measurement and control device to meet the use requirements of the measurement and control device. The uninterruptible power supply in this embodiment can adopt an uninterruptible power supply (UPS) in the prior art, and the uninterruptible power supply is set to power the universal circuit breaker to ensure that the universal circuit breaker continues to function.

[0040] In one embodiment, the core 21 is an amorphous alloy three-dimensional wound core 21 .

[0041] Compared with the traditional laminated core 21, the amorphous alloy three-dimensional wound core adopts a three-dimensional structure, the high-voltage coil 22 and the low-voltage coil 23 are three-dimensionally wound, and the three-phase magnetic circuit is balanced, which can greatly reduce the stray magnetic field around the transformer 20, so that the energy loss of the transformer 20 is effectively reduced. Amorphous alloy has good wear resistance and high resistivity. The core 21 is made of amorphous alloy material, which makes the core 21 have good wear resistance, further reducing the loss of the transformer 20, reducing maintenance costs, and prolonging the service life of the energy storage converter.

[0042] In one embodiment, the high voltage coil 22 and the low voltage coil 23 are both made of aluminum.

[0043] Since aluminum has good electrical conductivity and low cost, the high-voltage coil 22 and the low-voltage coil 23 adopt an all-aluminum circular coil structure, combining the structural advantages of the amorphous alloy three-dimensional wound core with the price advantage of aluminum, thereby effectively reducing the production and maintenance costs of the energy storage converter and booster.

[0044] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An integrated energy storage, current conversion and voltage boosting machine, characterized in that: include: Base; A transformer, the transformer is arranged on the base, a high-voltage bushing and a low-voltage bushing are arranged on opposite sides of the transformer, the transformer comprises an iron core, a low-voltage coil wound outside the iron core, and a high-voltage coil wound outside the low-voltage coil, the low-voltage coil is connected to the low-voltage bushing through a low-voltage lead, and the high-voltage coil is connected to the high-voltage bushing through a high-voltage lead; A high-voltage chamber, the high-voltage chamber is arranged on the base and is located on a side of the transformer where the high-voltage bushing is arranged, a vacuum circuit breaker is arranged in the high-voltage chamber, the high-voltage bushing extends into the high-voltage chamber and is connected to the vacuum circuit breaker; A low-voltage chamber, the low-voltage chamber is arranged on one side of the base where the high-voltage chamber is located, the low-voltage chamber and the high-voltage chamber are arranged side by side, a universal circuit breaker is arranged in the low-voltage chamber, and the low-voltage bushing is connected to the universal circuit breaker through a main circuit line; An energy storage converter is arranged on the base and located at a side of the transformer where the low-voltage bushing is arranged, and the energy storage converter is connected to the low-voltage bushing.

2. The integrated energy storage, current conversion and voltage boosting device according to claim 1, characterized in that: The transformer is an oil-immersed transformer. The iron core, the low-voltage coil and the high-voltage coil are all installed in an oil tank. The wall of the oil tank is provided with holes for the high-voltage bushing and the low-voltage bushing to pass through.

3. The integrated energy storage, current conversion and voltage boosting device according to claim 2, characterized in that: The transformer also includes a fixing member and a connecting member. The fixing member is used to fix the high-voltage coil, the low-voltage coil and the iron core to form a body structure; the connecting member fixes the body structure in the oil tank.

4. The integrated energy storage, current conversion and voltage boosting device according to claim 2, characterized in that: A high-pressure panel and a low-pressure panel are arranged on the tank wall of the oil tank close to the high-pressure chamber. The high-pressure panel is bolted to the high-pressure chamber, and the low-pressure panel is bolted to the low-pressure chamber.

5. The integrated energy storage, current conversion and voltage boosting device according to claim 4, characterized in that: The high voltage panel is provided with an insulating support, which extends in a direction away from the oil tank and into the high voltage chamber. The high voltage bushing passes through the hole and is sleeved on the insulating support.

6. The integrated energy storage, current conversion and voltage boosting device according to any one of claims 1 to 5, characterized in that: A low-voltage cabinet is arranged in the low-voltage chamber, the universal circuit breaker is located in the low-voltage cabinet, and a measurement and control device connected to the universal circuit breaker and the vacuum circuit breaker is arranged in the low-voltage cabinet.

7. The integrated energy storage, current conversion and voltage boosting device according to claim 6, characterized in that: A dry-type transformer and an uninterruptible power supply are also provided in the low-voltage cabinet. The low-voltage bushing is sequentially connected to the dry-type transformer and the measurement and control device through a branch circuit, and the universal circuit breaker is electrically connected to the uninterruptible power supply.

8. The integrated energy storage, current conversion and voltage boosting device according to any one of claims 1 to 5, characterized in that: The iron core is an amorphous alloy three-dimensional wound iron core.

9. The integrated energy storage, current conversion and voltage boosting device according to any one of claims 1 to 5, characterized in that: The high-voltage coil and the low-voltage coil are both made of aluminum.

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