CN215774034U

CN215774034U - High-voltage direct-hanging type cascade energy storage unit

Info

Publication number: CN215774034U
Application number: CN202121924534.5U
Authority: CN
Inventors: 姚海嘉; 任其广; 陈早军; 高海星
Original assignee: Windsun Science and Technology Co Ltd
Current assignee: Windsun Science and Technology Co Ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-02-08
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a high-voltage direct-hanging type cascade energy storage unit which comprises an inversion unit and an expansion unit, wherein the inversion unit comprises an inversion unit shell, an IGBT radiator assembly, an axial flow fan, a film capacitor, a unit control board assembly, a bypass contactor, a unit connecting copper bar and an insulating bar; the IGBT radiator assembly, the thin-film capacitor and the bypass contactor are respectively arranged on a bottom plate of the inversion unit shell, and the axial flow fan is arranged at the front end of the inversion unit shell; the unit connecting copper bars are respectively arranged on the IGBT radiator assembly, the bypass contactor and the film capacitor to realize electric appliance connection, and the insulating strips reinforce the electric appliance; the unit control board assembly is arranged on the upper part of the inversion unit shell. The inversion unit and the extension unit can be placed up and down or left and right, and the inversion unit and the extension unit are connected through a connecting bar to realize electric appliance connection. The utility model can better realize the matching of the unit and the battery.

Description

High-voltage direct-hanging type cascade energy storage unit

Technical Field

The utility model relates to a high-voltage direct-hanging type cascade energy storage unit, and belongs to the technical field of high-voltage energy storage products.

Background

With the adjustment of national policies in recent years, the demand of the market for high-voltage cascade energy storage products is increasing. Most energy storage products in the market at present are low-voltage energy storage products or low-voltage energy storage is applied to high-voltage energy storage through a step-down transformer, the high-voltage direct-hanging type cascade energy storage products are few, and a high-voltage direct-hanging type cascade energy storage product is urgently needed to be developed. High-voltage cascade product structure generally adopts the fan to concentrate the heat dissipation because voltage is higher, because high-voltage cascade energy storage unit will use with the battery cooperation, establishes ties through the unit, realizes the high-voltage, adopts collection dress heat radiation structure can be very complicated, is unfavorable for realizing productization, urgently needs a kind of unit structure that can independently dispel the heat. The high-voltage energy storage unit is matched with a battery for use, and because the size of the battery on the market is very small, the energy storage unit is relatively large, and an energy storage unit structure needs to be developed to meet the matching of the energy storage unit and the battery.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a high-voltage direct-hanging type cascade energy storage unit to solve the technical problems mentioned in the background technology.

In order to solve the technical problem, the technical scheme adopted by the utility model is as follows: a high-voltage direct-hanging type cascade energy storage unit comprises an inversion unit and an expansion unit, wherein the inversion unit comprises an inversion unit shell, an IGBT radiator assembly, an axial flow fan, a film capacitor, a unit control board assembly, a bypass contactor, a unit connection copper bar and an insulating bar; the IGBT radiator assembly, the thin-film capacitor and the bypass contactor are respectively arranged on a bottom plate of the inversion unit shell, and the axial flow fan is arranged at the front end of the inversion unit shell; the unit connecting copper bars are respectively arranged on the IGBT radiator assembly, the bypass contactor and the film capacitor to realize electric appliance connection, and the insulating strips reinforce the electric appliance; the unit control board assembly is arranged on the upper part of the inversion unit shell; the expansion unit comprises an expansion unit shell, a reactor and an expansion film capacitor, wherein the reactor and the expansion film capacitor are respectively arranged on the expansion unit shell. The inversion unit and the extension unit can be placed up and down or left and right, and the inversion unit and the extension unit are connected through a connecting bar to realize electric appliance connection.

Furthermore, a fan hole is formed in the front end of the inversion unit shell, and the axial flow fan is placed in a pin on a fan cover plate and then is installed in the fan hole of the inversion unit.

Furthermore, the front end of the unit control board assembly is connected with the inversion unit shell through a fixing pin and a jack, the rear end of the unit control board assembly is connected with the inversion unit shell through a bolt, a unit shell cover is arranged above the unit control board assembly, and the unit shell cover is connected with the inversion unit shell to enable the inversion unit shell to become a closed shell.

Furthermore, 2 IGBT modules are placed on the IGBT radiator assembly in an LC filter mode, and 3 IGBT modules are placed in a DCDC filter mode.

The utility model has the beneficial effects that: the high-voltage energy storage unit is divided into the inversion unit and the expansion unit, so that the single unit is prevented from being overlarge in volume, and the unit can be better matched with a battery. The unit adopts an independent fan for heat dissipation, so that the structure of the whole machine can be greatly simplified, an air duct does not need to be designed, and a connecting line between the unit and a battery is removed. The IGBT radiator assembly is directly placed at the bottom of the inversion unit shell, two operation modes of LC filtering and DCDC filtering are met by changing the number of devices, and structural compatibility is strong.

Drawings

FIG. 1 is a schematic diagram of an external structure of an inverter unit;

FIG. 2 is a schematic structural diagram of an IGBT heat sink assembly;

FIG. 3 is a schematic diagram of the internal structure of the inverter unit;

FIG. 4 is a schematic diagram of an expansion unit;

FIG. 5 is a schematic view of the overall layout of a cell;

in the figure: 1. unit cap, 2, contravariant unit casing, 3, axial fan, 4, fan apron, 5, IGBT radiator subassembly, 6, unit control panel subassembly, 7, bypass contactor, 8, unit connection copper bar, 9, film capacitor, 10, extension unit casing, 11, reactor, 12, extension capacitor, 13, insulating strip, 14, contravariant unit, 15, extension unit, 16, the bank of connections.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

The utility model discloses a high-voltage direct-hanging type cascade energy storage unit, which is characterized in that the high-voltage cascade energy storage unit has more devices and a single unit has larger volume, so that the structural compatibility of the unit and a battery cannot be met.

As shown in fig. 1, 2 and 3, the inverter unit includes: the unit shell cover 1, contravariant unit shell 2, axial fan 3, fan apron 4, IGBT radiator subassembly 5, unit control panel subassembly 6, bypass contactor 7, unit connection copper bar 8, film capacitor 9, insulator strip 13.

As shown in fig. 3, the IGBT radiator module 5, the thin film capacitor 9, and the bypass contactor 7 are respectively mounted on the bottom plate of the inverter unit housing 2; the unit connecting copper bars 8 are respectively arranged on the IGBT radiator component 5, the bypass contactor 7 and the film capacitor 9, and all devices are connected in a contrast mode according to circuit topology to achieve electrical connection; the output part of the connecting copper bar 8 is used for preventing the IGBT module from being stressed and is fixedly reinforced by an insulating strip 13. The unit control board assembly 6 is installed on the upper portion of the inverter unit housing.

During installation, the IGBT radiator assembly 5 slides into the inversion unit shell 2 from back to front, and the IGBT radiator assembly 5 is fixed on the bottom plate of the inversion unit shell 2 through bolts. The thin film capacitor 9 is then mounted and the thin film capacitor 9 is secured at the bottom by a nut.

As shown in fig. 2, 2 IGBT modules are mounted on the IGBT radiator module 5 as an LC filter mode, and 3 IGBT modules are mounted as a DCDC filter mode, so that two filter modes of LC and DCDC are compatible.

As shown in fig. 1, a fan hole is formed in the front end of the inverter unit housing 2, and the axial flow fan 3 is placed in a pin on the fan cover plate 4, and then is installed in the fan hole of the inverter unit housing 2 from front to back, so that the fan is pressed and fixed.

The unit control board assembly 6 is installed on the upper portion of the inversion unit shell 2, two holes are used for inserting on fixing pins of the inversion unit shell 2 in the front, two bolts are used for fixing in the rear, and finally the unit shell cover 1 is installed. The unit case cover 1 is connected with the inverter unit case 2 so that the inverter unit case becomes a closed case.

As shown in fig. 4, the extension unit includes an extension unit case 10, a reactor 11, and an extension film capacitor 12, and the reactor 11 and the extension film capacitor 12 are respectively provided on the extension unit case 10. Specifically, the reactor 11 and the extension film capacitor 12 are mounted on the left and right sides of the extension unit case 10, respectively, and fixed by bolts.

As shown in fig. 5, the inversion unit 14 is placed above, the expansion unit 15 is placed below, and the inversion unit 14 and the expansion unit 15 are connected together by the connection row 16 to realize the electrical connection.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A high-pressure direct-hanging type cascade energy storage unit is characterized in that: the inverter comprises an inverter unit and an expansion unit, wherein the inverter unit comprises an inverter unit shell, an IGBT diffuser assembly, an axial flow fan, a film capacitor, a unit control panel assembly, a bypass contactor and a unit connection copper bar; the unit connecting copper bars are respectively arranged on the IGBT radiator assembly, the bypass contactor and the thin film capacitor to realize electrical connection; the unit control board assembly is arranged on the upper part of the inversion unit shell; the expansion unit comprises an expansion unit shell, a reactor and an expansion film capacitor, wherein the reactor and the expansion film capacitor are respectively arranged on the expansion unit shell.

2. The high-voltage direct-hanging type cascade energy storage unit according to claim 1, wherein: the front end of the inversion unit shell is provided with a fan hole, and the axial flow fan is placed in a pin on a fan cover plate and then is installed in the fan hole of the inversion unit.

3. The high-voltage direct-hanging type cascade energy storage unit according to claim 1, wherein: the front end of the unit control board assembly is connected with the inversion unit shell through a fixing pin and a jack, the rear end of the unit control board assembly is connected with the inversion unit shell through a bolt, a unit shell cover is arranged above the unit control board assembly, and the unit shell cover is connected with the inversion unit shell to enable the inversion unit shell to become a closed shell.

4. The high-voltage direct-hanging type cascade energy storage unit according to claim 1, wherein: an LC filter and/or a DCDC filter are placed on the IGBT heat sink assembly.

5. The high-voltage direct-hanging type cascade energy storage unit according to claim 1, wherein: the contravariant unit still includes the insulated strip, and the insulated strip is consolidated the unit connection copper bar.

6. The high-voltage direct-hanging type cascade energy storage unit according to claim 1, wherein: the inversion unit and the extension unit are placed up and down or left and right, and the inversion unit and the extension unit are electrically connected through the connecting row.