CN218958803U - Low-voltage energy storage converter - Google Patents
Low-voltage energy storage converter Download PDFInfo
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- CN218958803U CN218958803U CN202223300382.9U CN202223300382U CN218958803U CN 218958803 U CN218958803 U CN 218958803U CN 202223300382 U CN202223300382 U CN 202223300382U CN 218958803 U CN218958803 U CN 218958803U
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Abstract
The application provides a low-voltage energy storage converter, which is used for control equipment in a storage battery energy storage system and comprises a converter module, a metal shell and an insulating material. The converter module comprises two groups of direct current metal assemblies, two groups of alternating current metal assemblies, a power plate and a capacitor plate, wherein the positive electrode and the negative electrode of the direct current metal assemblies are connected with the positive electrode and the negative electrode of the storage battery, and the direct current metal assemblies are also connected with the power plate to realize conversion between direct current and alternating current; the power board is also connected with the capacitor board, and can absorb and release current smoothly, so that stable current is output to the alternating current end.
Description
Technical Field
The utility model belongs to the field of electrochemical energy storage, and particularly relates to a low-voltage energy storage converter.
Background
The energy storage technology is a key support technology for realizing carbon peak and carbon neutralization, and the energy storage modes can be divided into mechanical energy storage, electromagnetic energy storage and chemical energy storage according to the difference of working principles. The chemical energy storage mainly refers to storage battery energy storage, and a storage Battery Energy Storage System (BESS) is the most widely used energy storage system at present, and compared with the BESS, the BESS has the advantages of low cost, high charge and discharge times and good modularity, and can be used as a distributed energy storage device. Therefore, the control precision of charge and discharge in the storage battery energy storage system needs to be continuously optimized, in the converter module, the efficiency of the power board needs to be improved in the process of converting direct current and alternating current, and in the common converter setting, the volume of the converter module needs to be reduced as much as possible to realize the occupied space configured by a user; secondly, at present, an igbt (insulated gate bipolar transistor) is often adopted as a domestic power board, and the yield is insufficient to supply domestic use quantity, so that the shortage of supply is often caused, and therefore, the provision of a new low-voltage energy storage converter is a technical problem which needs to be solved by a person skilled in the art.
Disclosure of Invention
The utility model aims to overcome the defects of conversion efficiency and alternating current stability in the prior art, and provides a low-voltage energy storage converter which is used for control equipment in a storage battery energy storage system and comprises a converter module, a metal shell and an insulating material;
the converter module comprises a direct-current metal component, an alternating-current metal component, a power board and a capacitor board, wherein the direct-current metal component and the alternating-current metal component are arranged in parallel in a staggered manner;
the direct-current metal component is connected with an external storage battery and used for charging and discharging the storage battery, and the alternating-current metal component is used for outputting current;
the two power plates are respectively arranged at two sides of the direct current metal component and used for converting direct current and alternating current;
the capacitor plates are arranged at two sides of the power plate, which are far away from the direct-current metal component, and are used for storing electric energy.
The insulating material comprises an insulating plate and an insulating film, wherein the insulating plate is arranged at the bottom of the inner side of the metal shell, and the insulating film is arranged on components which are clung to the inner side of the metal shell.
Further, the direct-current metal component comprises a first direct-current metal component and a second direct-current metal component;
the first direct-current metal component comprises a first direct-current metal positive electrode and a first direct-current metal negative electrode, the second direct-current metal component comprises a second direct-current metal positive electrode and a second direct-current metal negative electrode, and the first direct-current metal positive electrode and the first direct-current metal negative electrode are connected with the positive electrode and the negative electrode of a storage battery; the second direct-current metal anode and the second direct-current metal cathode are connected with the anode and the cathode of the other storage battery;
the alternating current metal assembly is provided with three groups for outputting current.
Further, the bottom of the direct current metal component is provided with a 90-degree bending surface and three vertical rows which are vertically arranged;
the first direct-current metal anode is provided with a first anode bending surface and a first anode vertical row, and the first direct-current metal cathode is provided with a first cathode bending surface and a first cathode vertical row;
the second direct-current metal anode is provided with a second anode bending surface and a second anode vertical row, and the second direct-current metal cathode is provided with a second cathode bending surface and a second cathode vertical row;
further, the first positive electrode bending surface and the second positive electrode bending surface are arranged at the bottom of the inner side of the metal shell;
the first negative electrode bending surface and the second negative electrode bending surface are arranged at the top of the inner side of the metal shell.
Further, the insulating plate penetrates through the first positive electrode vertical row and the second positive electrode vertical row and is fixedly arranged on the upper parts of the first positive electrode bending surface and the second positive electrode bending surface in a pressing mode;
the insulating film is respectively arranged at the lower parts of the first positive electrode bending surface and the second positive electrode bending surface, and the insulating film is directly connected with the metal shell.
Further, the alternating current metal component is provided with three groups;
the alternating current metal component is a metal plate which is L-shaped, the alternating current metal component comprises an alternating current bending surface and an alternating current vertical row, the alternating current bending surface is flatly paved on the bottom surface of the inner side of the metal shell, and the alternating current vertical row passes through the insulating plate to be vertically arranged.
Further, the converter module further comprises a contactor and a fuse;
the contactor and the fuse are both provided with two, are respectively connected with the first direct current metal positive electrode and the second direct current metal positive electrode, and are used for overload protection of the converter module.
Further, the capacitor plate is connected with the power plate through copper studs, and the copper studs are uniformly arranged.
Further, one side of the capacitor plate, which is far away from the direct current metal component, is provided with a signal plate, and the signal plate is closely connected to the other side of the capacitor plate for weak current control.
Compared with the prior art, the utility model has the beneficial effects that:
1) All the metal vertical rows are added in the middle by the two power plates to be fixed, so that the maximum power derivation can be realized and the space of the converter module is compact; and the two power boards are tightly attached to the direct current metal component for conversion, the conversion path is shorter, the loss caused by the conversion is reduced, and the efficiency of the power boards for realizing the conversion between direct current and alternating current is improved.
2) The metal component and the metal shell are isolated by the insulating film, so that the effect that the metal component is a current conductor and a heat conductor can be realized to conduct out the current and the heat on the power board;
3) The capacitor plate and the power plate are conducted through the copper column, so that uniformity of current absorption of the capacitor and shortest path are realized, and a filtering effect is better achieved.
Drawings
The following drawings are illustrative of the utility model and are not intended to limit the scope of the utility model, in which:
fig. 1: schematic diagram of DC metal component and AC metal component position
Fig. 2: a schematic perspective view of a converter module;
fig. 3: a bottom view of the converter module;
fig. 4: a converter module and a metal shell assembly schematic diagram;
in the figure: 1-converter module, 2-metal housing, 3-insulating material, 301-insulating plate, 302-insulating film, 4-direct current metal component, 401-first direct current metal component, 402-second direct current metal component, 4011-first direct current metal positive electrode, 4012-first direct current metal negative electrode, 4013-first positive electrode bending surface, 4014-first positive electrode vertical line, 4015-first negative electrode bending surface, 4016-first negative electrode vertical line, 4021-second direct current metal positive electrode, 4022-second direct current metal negative electrode, 4023-second positive electrode bending surface, 4024-second positive electrode vertical line, 4025-second negative electrode bending surface, 4026-second negative electrode vertical line, 5-alternating current metal component, 501-alternating current bending surface, 502-alternating current vertical line, 503-wide alternating current copper line, 6-power board, 7-capacitor board, 8-contactor, 9-fuse, 10-copper stud, 11-signal board.
Detailed Description
The present utility model will be further described in detail with reference to the following specific examples, which are given by way of illustration, in order to make the objects, technical solutions, design methods and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1, 2, 3 and 4, the present utility model provides a low-voltage energy-storage converter, which is used for control equipment in a storage battery energy storage system and comprises a converter module 1, a metal shell 2 and an insulating material 3; wherein the metal housing 2 is of aluminium material.
The converter module 1 comprises a direct-current metal component 4, an alternating-current metal component 5, a power board 6 and a capacitor board 7;
the direct current metal component 4 comprises a first direct current metal component 401 and a second direct current metal component 402; the first dc metal component 401 and the second dc metal component 402 are respectively connected to different ac metal components 5, and are disposed in different phases from the phases with which the ac metal components 5 are in contact.
The first dc metal component 401 includes a first dc metal positive electrode 4011 and a first dc metal negative electrode 4012, and the second dc metal component 402 includes a second dc metal positive electrode 4021 and a second dc metal negative electrode 4022, which are respectively used for connecting the positive electrode and the negative electrode of the battery; each positive electrode and each negative electrode of the direct current metal component 4 are respectively connected with the positive electrode and the negative electrode of the storage battery, as shown in fig. 1, the bottom of the direct current metal component 4 is provided with a 90-degree bending surface, three vertical rows are vertically arranged, the first direct current metal positive electrode 4011 is provided with a first positive electrode bending surface 4013 and a first positive electrode vertical row 4014, and the first direct current metal negative electrode 4012 is provided with a first negative electrode bending surface 4015 and a first negative electrode vertical row 4016; the second direct current metal positive electrode 4021 has a second positive electrode bending surface 4023 and a second positive electrode vertical row 4024, and the second direct current metal negative electrode 4022 has a second negative electrode bending surface 4025 and a second negative electrode vertical row 4026; the first positive electrode bending surface 4013 and the second positive electrode bending surface 4023 are arranged at the bottom of the inner side of the metal shell 2; the first negative electrode bending surface 4015 and the second negative electrode bending surface 4025 are provided at an inner top of the metal casing 2. The insulating plate 301 passes through the first positive electrode vertical row 4014 and the second positive electrode vertical row 4024, and is fixedly pressed on the upper parts of the first positive electrode bending surface 4013 and the second positive electrode bending surface 4023; the insulating film 302 is disposed at the lower portions of the first positive electrode bending surface 4013 and the second positive electrode bending surface 4023, respectively, and the insulating film 302 is directly connected to the metal housing 2. The first positive electrode vertical row 4014, the first negative electrode vertical row 4015, the second positive electrode vertical row 4024 and the second negative electrode vertical row 4025 are respectively and oppositely arranged in a penetrating manner, and the three alternating current vertical rows 502 are also oppositely arranged in a penetrating manner with the direct current vertical rows, so that the volume of the converter module 1 is reduced;
as shown in fig. 2, the ac metal assembly 5 is provided with three groups for outputting current; the alternating current metal component 5 is an L-shaped metal plate, the alternating current metal component comprises an alternating current bending surface 501 and an alternating current vertical row 502, the alternating current bending surface 501 is flatly paved on the inner bottom surface of the metal shell 2, and the alternating current vertical row 502 passes through the insulating plate 301 to be vertically arranged.
As shown in fig. 1 and fig. 2, two power boards 6 are provided and are respectively disposed on the left side of the first direct current metal positive electrode 4011 and the right side of the second direct current metal positive electrode 4021, the contactor 8 is connected with the first direct current metal positive electrode 4011, the material of the first direct current metal positive electrode 4011 is a copper bar, and the power boards 6 can be in contact connection, so that the power boards 6 can convert direct current into alternating current for output, and meanwhile, inversion can be realized, so that the alternating current is converted into direct current for storage; the second dc metal positive electrode 4021 is also connected to the power board 6, and outputs ac power having different phases.
The two capacitor plates 7 are respectively arranged at two sides of the power plate 6 and used for absorbing current, the capacitor plates 7 and the power plate 6 are connected by using copper studs 10, and the copper studs 10 are uniformly arranged in a plurality and used for collecting and buffering the current so that the current can be smoothly output to an alternating current end;
the insulating material 3 includes an insulating plate 301 and an insulating film 302, the insulating plate 301 is disposed on the bottom surface of the inner side of the metal shell 2, and the insulating film 302 is disposed on the component closely attached to the inner side of the metal shell 2.
With continued reference to fig. 2, the converter module 1 further includes a contactor 8 and a fuse 9;
the contactor 8 and the fuse 9 are provided with two, are respectively connected with the first direct current positive electrode 4011 and the second direct current positive electrode 4021 and are used for overload protection of the converter module 1, the direct current metal positive electrode is connected with the fuse 9, the fuse 9 is connected with the contactor 8, the contactor 8 is connected with the power board 6, when overload protection of the power board 6 is needed, the contactor 8 is firstly subjected to overload protection, and if the contactor 8 fails to timely perform overload protection, the fuse 9 directly performs fusing overload protection on the contactor 8.
Preferably, a signal board 11 is disposed on one side of the capacitor board 7 away from the dc metal component 4, and the signal board 11 is closely connected to the other side of the capacitor board 7 for weak current control.
The insulating plate 302 is configured to press and fix the dc metal component 4 and the ac metal component 5 to the bottom of the inner side of the metal casing 2, and then is tightly connected to the bottom of the inner side of the metal casing 2 through the insulating film 302; the two contactors 8 are fixedly connected with the insulating plate 302, the two fuses 9 are arranged above the contactors 8 and are clamped and fixedly connected through two L-shaped connecting plates; the two capacitor plates 7 clamp the power plate 6 and are connected through a plurality of copper studs 10, so that the capacitors uniformly absorb current, and the current absorption path is shortest; the two power plates 6 clamp and fix the vertical rows on the direct-current metal component 4 and the alternating-current metal component 5, and are connected through screws in a fastening manner, so that the current derived power is maximized, the space of the converter module is reasonably utilized, the size of the converter module is reduced, and meanwhile, the efficient operation of the rectifier converter can be achieved.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A low voltage energy storage converter for a control device in a battery energy storage system, characterized by comprising a converter module (1), a metal housing (2) and an insulating material (3);
the converter module (1) comprises a direct-current metal component (4), an alternating-current metal component (5), a power plate (6) and a capacitor plate (7), wherein the direct-current metal component (4) and the alternating-current metal component (5) are arranged side by side in a staggered manner;
the direct-current metal component (4) is connected with an external storage battery and used for charging and discharging the storage battery, and the alternating-current metal component (5) is used for outputting current;
the power plates (6) are arranged at two sides of the direct current metal component (4) and are used for converting direct current and alternating current;
the two capacitor plates (7) are respectively arranged at one side of the power plate (6) far away from the direct-current metal component (4) and used for storing electric energy;
the insulating material (3) comprises an insulating plate (301) and an insulating film (302), wherein the insulating plate (301) is arranged at the bottom of the inner side of the metal shell (2), and the insulating film (302) is arranged on components which are clung to the inner side of the metal shell (2).
2. A low voltage energy storage converter according to claim 1, characterized in that the direct current metal component (4) comprises a first direct current metal component (401) and a second direct current metal component (402);
the first direct-current metal component (401) comprises a first direct-current metal positive electrode (4011) and a first direct-current metal negative electrode (4012), the second direct-current metal component (402) comprises a second direct-current metal positive electrode (4021) and a second direct-current metal negative electrode (4022), and the first direct-current metal positive electrode (4011) and the first direct-current metal negative electrode (4012) are connected with the positive electrode and the negative electrode of one storage battery; the second direct-current metal anode (4021) and the second direct-current metal cathode (4022) are connected with the anode and the cathode of the other storage battery;
the alternating current metal component (5) is provided with three groups for outputting current.
3. A low voltage energy storage converter according to claim 2, characterized in that the bottom of the direct current metal assembly (4) has a 90 ° bend face, and three vertical rows arranged vertically;
the first direct-current metal positive electrode (4011) is provided with a first positive electrode bending surface (4013) and a first positive electrode vertical row (4014), and the first direct-current metal negative electrode (4012) is provided with a first negative electrode bending surface (4015) and a first negative electrode vertical row (4016);
the second direct current metal positive electrode (4021) is provided with a second positive electrode bending surface (4023) and a second positive electrode vertical row (4024), and the second direct current metal negative electrode (4022) is provided with a second negative electrode bending surface (4025) and a second negative electrode vertical row (4026).
4. A low voltage energy storage converter according to claim 3, characterized in that the first positive bending surface (4013) and the second positive bending surface (4023) are arranged at the bottom of the inner side of the metal casing (2);
the first negative electrode bending surface (4015) and the second negative electrode bending surface (4025) are arranged at the top of the inner side of the metal shell (2).
5. The low-voltage energy storage converter according to claim 4, wherein the insulating plate (301) is fixedly arranged on the upper parts of the first positive electrode bending surface (4013) and the second positive electrode bending surface (4023) by penetrating through the first positive electrode vertical row (4014) and the second positive electrode vertical row (4024) in a pressing manner;
the insulating film (302) is respectively arranged at the lower parts of the first positive electrode bending surface (4013) and the second positive electrode bending surface (4023), and the insulating film (302) is directly connected with the metal shell (2).
6. A low voltage energy storage converter according to claim 1, characterized in that the ac metal assembly (5) is provided with three groups;
the alternating current metal component (5) is a metal plate which is L-shaped, the alternating current metal component comprises an alternating current bending surface (501) and an alternating current vertical row (502), the alternating current bending surface (501) is flatly paved on the inner bottom surface of the metal shell (2), and the alternating current vertical row (502) passes through the insulating plate (301) to be vertically arranged.
7. A low voltage energy storage converter according to claim 1, characterized in that the converter module (1) further comprises a contactor (8) and a fuse (9);
the contactor (8) and the fuse (9) are respectively provided with two, are respectively connected with the first direct current metal positive electrode (4011) and the second direct current metal positive electrode (4021) and are used for overload protection of the converter module (1).
8. A low voltage energy storage converter according to claim 1, characterized in that the capacitive plates (7) are connected to the power plates (6) by copper studs (10), the copper studs (10) being arranged uniformly.
9. A low voltage energy storage converter according to claim 8, characterized in that one side of the capacitor plate (7) remote from the dc metal assembly (4) is provided with a signal plate (11), said signal plate (11) being connected snugly to the other side of the capacitor plate (7) for weak current control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223300382.9U CN218958803U (en) | 2022-12-09 | 2022-12-09 | Low-voltage energy storage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223300382.9U CN218958803U (en) | 2022-12-09 | 2022-12-09 | Low-voltage energy storage converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218958803U true CN218958803U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223300382.9U Active CN218958803U (en) | 2022-12-09 | 2022-12-09 | Low-voltage energy storage converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218958803U (en) |
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2022
- 2022-12-09 CN CN202223300382.9U patent/CN218958803U/en active Active
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