CN202523941U - Laminated busbar used for energy storage system - Google Patents

Abstract

A laminated busbar for an energy storage system according to the utility model includes a conductive positive plate, a conductive negative plate, an insulating partition and insulating plates respectively fixed on the outer surfaces of the two conductive positive and negative plates. On the same side of the laminated busbar, there are at least one pair of positive and negative capacitor jacks for connecting to the positive and negative poles of the energy storage capacitor, and three pairs are provided at one end of the laminated busbar for connecting with the corresponding busbar. The positive and negative connection parts of the connection are provided with two pairs of positive and negative IGBT connection parts for electrical connection with the positive and negative electrodes of the IGBT power module on the other end of the laminated busbar. The laminated busbar of the utility model can be electrically connected with multiple devices such as IGBT modules, film capacitors, and corresponding connecting busbars. The laminated busbar itself has the characteristics of low inductance coefficient, low impedance, small voltage drop, and compact structure. The damage to components caused by voltage spikes is reduced, and the problem that the use of wires in the prior art is easy to cause damage to electronic components is solved.

Description

Laminated busbar for energy storage system

technical field

The utility model relates to a laminated busbar, in particular to a laminated busbar for an energy storage system.

Background technique

Establish a large-scale energy storage system in each link of power generation, transmission, distribution, and power consumption of the power grid. Use the energy storage system to store the remaining electric energy in the power grid first, and then feed it back to the power grid when the power consumption peaks. This overcomes the The disadvantage of simultaneous power generation and power consumption saves unnecessary energy waste; in the low-voltage power platform of the existing large-scale energy storage system, the electrical connection between the IGBT power module and the film capacitor is often connected by conventional wires. It has high inductance, impedance and voltage drop, which will increase the voltage spike and cause damage to electronic components.

Contents of the invention

The purpose of the utility model is to provide a laminated busbar for an energy storage system to solve the problem in the prior art that the use of wires is easy to cause damage to electronic components.

In order to solve the above problems, a laminated busbar for an energy storage system of the present invention includes a conductive positive plate, a conductive negative plate, an insulating separator sandwiched between the two conductive positive and negative plates, and Insulation plates fixed on the outer surfaces of the two conductive positive and negative plates, and at least one pair of electrical connections to the two conductive positive and negative plates for energy storage are provided on the same side of the laminated busbar. The positive and negative capacitor jacks connected to the positive and negative electrodes of the capacitor are provided with three pairs of positive and negative electrodes respectively electrically connected to the two conductive positive and negative plates for electrical connection with the corresponding connecting bus bar at one end of the laminated busbar As for the connection part, two pairs of positive and negative IGBT connection parts are provided on the other end of the laminated busbar to be electrically connected to the two conductive positive and negative plates, respectively, and to be electrically connected to the positive and negative electrodes of the IGBT power module.

Each of the positive and negative connecting parts is an L-shaped conductive plate, and each of the L-shaped conductive plates has an insertion hole for electrical connection with the corresponding connecting busbar on the outer end surface.

The positive and negative IGBT connecting parts are L-shaped conductive plates, and each L-shaped conductive plate has an insertion hole for electrical connection with the positive and negative electrodes of the IGBT power module on the outer end surface.

The L-shaped conductive plate constituting the connection portion of the positive and negative electrodes and the L-shaped conductive plate constituting the connection portion of the positive and negative IGBTs are respectively bent in opposite directions.

The laminated busbar of the utility model can be electrically connected with multiple devices such as IGBT modules, film capacitors, and corresponding connecting busbars. The laminated busbar itself has the characteristics of low inductance coefficient, low impedance, small voltage drop, and compact structure. Reduce the damage of voltage spikes to components, prolong the service life of electronic components, reduce system noise and electromagnetic interference/radio frequency interference, solve the problem that the use of wires in the prior art is easy to cause damage to electronic components, and can effectively use space to reduce Internal wiring reduces the difficulty of electrical wiring, thereby reducing the volume of the switchgear, facilitating installation and on-site maintenance, reducing the number of components, increasing the reliability of the system, and being simple and beautiful.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the utility model embodiment;

Fig. 2 is the left view structural representation of the utility model embodiment;

Fig. 3 is a top view structural schematic diagram of an embodiment of the utility model;

Fig. 4 is the enlarged view of place A in Fig. 2;

Figure 5 is a diagram of the use state of the laminated busbar;

FIG. 6 is a view taken along direction B of FIG. 5 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model embodiment is described in detail:

An embodiment of a laminated busbar for an energy storage system, as shown in FIGS. The separator 109 and the insulating plates 107, 111 fixed on the outer sides of the two conductive positive and negative plates 108, 110 respectively, the conductive positive plate 108, the conductive negative plate 110, the insulating separator 109 and the two insulating plates 107, 111 are bonded Connected and fixed together, four pairs of positive and negative capacitance jacks 103 for connecting to the positive and negative poles of the energy storage capacitor are provided on the same side of the laminated busbar, which are electrically connected to the two conductive positive and negative plates 108 and 110 respectively. , 104, there are three pairs of positive and negative connection parts 101, 102 electrically connected to the two conductive positive and negative plates 108, 110 at one end of the stacked busbar for electrical connection with the corresponding connecting busbar. Two pairs of positive and negative IGBT connecting parts 105 and 106 are provided on the other end of the layer busbar to be electrically connected to the two conductive positive and negative plates 108 and 110 respectively, and are used to electrically connect the positive and negative electrodes of the IGBT power module. The negative connection parts are all L-shaped conductive plates, and the outer end surface of each of the L-shaped conductive plates has an insertion hole for electrical connection with the corresponding connecting bus bar, and each positive and negative IGBT connection parts are L-shaped conductive plates. The outer end surface of each L-shaped conductive plate has an insertion hole for electrical connection with the positive and negative poles of the IGBT power module. The L-shaped conductive plates of the connecting portion are respectively bent in opposite directions.

Figures 5 and 6 show the use state diagram of an energy storage mechanism of the laminated busbar in the energy storage system. One capacitor is installed on the radiator 8, and the energy storage capacitor group is installed on the capacitor mounting frame. Two IGBTs The module 7 is arranged on the heat sink 8 and is connected with the heat conduction of the heat sink. The laminated busbar 1 is arranged on the IGBT module 7. The positive and negative poles of the energy storage capacitor group 6 are connected to the corresponding positive and negative capacitor jacks 103 and 104. The laminated busbar 1 is electrically connected, and the two IGBT modules 7 are correspondingly connected to the positive and negative IGBT connection parts of the laminated busbar 1, and the laminated busbars of each energy storage mechanism in the energy storage system are connected through the connecting busbar.

The laminated busbar of the utility model can be electrically connected with multiple devices such as IGBT modules, film capacitors, and corresponding connecting busbars. The laminated busbar itself has the characteristics of low inductance coefficient, low impedance, small voltage drop, and compact structure. Reduce the damage of voltage spikes to components, prolong the service life of electronic components, reduce system noise and electromagnetic interference/radio frequency interference, and effectively use space to reduce internal wiring, reduce the difficulty of electrical wiring, and then reduce the volume of switch cabinets. It is convenient for installation and on-site maintenance, reduces the number of components, increases the reliability of the system, and is simple and beautiful.

In other embodiments of the present invention, different from the above embodiments, the positive and negative conductive plates can also be provided with 1 pair, 2 pairs, 3 pairs, 5 pairs, etc. as required.

Claims (4)

1. A laminated busbar for an energy storage system, characterized in that: it includes a conductive positive plate, a conductive negative plate, an insulating separator interposed between the two conductive positive and negative plates, and fixed on the The insulating plate on the outer surface of the two conductive positive and negative plates, and at least one pair of positive and negative plates respectively electrically connected to the two conductive positive and negative plates are provided on the same side of the laminated busbar for connecting with the positive and negative plates of the energy storage capacitor. The positive and negative capacitor jacks connected by the negative pole are provided with three pairs of positive and negative connection parts respectively electrically connected to the two conductive positive and negative plates for electrical connection with the corresponding connecting busbar at one end of the laminated busbar, Two pairs of positive and negative IGBT connecting parts are provided on the other end of the laminated busbar, which are respectively electrically connected to the two conductive positive and negative plates and are used to electrically connect to the positive and negative electrodes of the IGBT power module. 2. A laminated busbar for an energy storage system according to claim 1, characterized in that: said positive and negative connecting parts are L-shaped conductive plates, each of said L-shaped conductive plates An insertion hole for electrical connection with the corresponding connection bus is provided on the outer end surface. 3. A laminated busbar for an energy storage system according to claim 1 or 2, characterized in that: said positive and negative IGBT connection parts are L-shaped conductive plates, and each L-shaped conductive plate There are socket holes for electrical connection with the positive and negative poles of the IGBT power module on the outer end surface. 4. A laminated busbar for an energy storage system according to claim 3, characterized in that: the L-shaped conductive plate constituting the positive and negative connection parts and the L-shaped conductive plate constituting the positive and negative IGBT connection parts The L-shaped conductive plates are respectively bent in opposite directions.

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