CN205050909U - Collector shoe gear for energy storage - Google Patents

Abstract

The utility model relates to a confluence device for energy storage. The installation position of the positive electrode connection row is provided with a positive electrode confluence connection row and a positive electrode cluster connection bar for corresponding connection with the positive electrodes of each battery cluster, and the installation position of the negative electrode connection row is provided with a negative electrode confluence The wiring bar and the negative electrode clustering wiring bar for corresponding connection with the negative pole of the battery cluster, the positive electrode clustering wiring bar and the positive electrode converging wiring bar are insulated when the battery cluster and the PCS system are clustered and wired, and the negative electrode clustering wiring bar is connected to the Negative confluence wiring bar is insulated when the battery cluster and PCS system are clustered and wired, and the positive electrode clustering terminal bar and the positive electrode converging wiring bar are conductively connected when the battery cluster and the PCS system are converging. The battery cluster and the PCS system are electrically connected when converging and wiring. The utility model can be applied to the single-stage PCS DC side access mode, and can also be applied to the dual-stage PCS DC side access mode, improving the application of the converging device for energy storage. sex.

Description

A confluence device for energy storage

technical field

The utility model relates to a confluence device for energy storage, in particular to a confluence device for energy storage used in an energy storage system.

Background technique

The DC part of the energy storage system and the PCS system need to be connected through a confluence device. There are two ways for the DC part of the energy storage system to be connected to the PCS system, one is single-stage PCS DC side connection, and the other is two-stage PCS DC side access mode; if single-stage PCS DC side access mode is adopted, as shown in Figure 1, the connection mode between multiple battery clusters and the PCS system is confluence access, and at this time the positive poles of each battery cluster are connected through confluence After converging, the device is connected to the positive pole of the PCS system, and the negative poles of each battery cluster are connected to the negative pole of the PCS system after converging through the converging device; if a two-stage PCS DC side connection method is adopted, as shown in Figure 2, the PCS The system has multiple power modules, and one battery cluster can only be conductively connected to one of the power modules. Therefore, the wiring method between the battery cluster and the PCS is connected in clusters, and the positive poles of each battery cluster are connected to the positive poles of the corresponding power modules of the PCS system. connection, the negative poles are respectively connected to the negative poles of the corresponding power modules of the PCS system, that is, the positive poles and negative poles of each battery cluster do not need to be converging.

Existing confluence devices are generally box-type structures or cabinet-type structures. The box-type confluence device is now described as an example; When the positive and negative poles of the cluster are connected to the confluence device, they can only be connected to the positive and negative confluence terminals in the box, so that the currents of each battery cluster will be converging, so the confluence device can only be used for single-stage If the dual-stage PCS DC side access method is used, the confluence device will not be able to be used, which will affect the scope of application of the confluence device.

Contents of the invention

The purpose of the utility model is to provide a confluence device for energy storage that can be applied to both single-stage PCS DC side access and dual-stage PCS DC side access.

In order to achieve the above object, the utility model adopts the following technical solutions:

A confluence device for energy storage, comprising a box body with a positive terminal block installation position and a negative terminal terminal position, the positive terminal block installation position is provided with a positive confluence terminal block, the negative terminal block installation position is provided with a negative confluence terminal block, the positive terminal The wiring bar installation position is also provided with a positive cluster wiring bar for correspondingly connecting with the positive poles of each battery cluster, and the negative electrode wiring bar installation position is also provided with a negative cluster wiring bar for correspondingly connecting with the negative poles of the battery clusters. The cluster wiring bar and the positive electrode bus wiring bar are insulated and set when the battery cluster and the PCS system are connected in clusters, and the negative electrode clustered wiring bar and the negative electrode bus wiring bar are insulated and set when the battery cluster and the PCS system are clustered and wired. The row and the positive electrode converging wiring row are conductively connected when the battery cluster is connected to the PCS system, and the negative electrode clustering wiring row is electrically connected to the negative electrode converging wiring row when the battery cluster is connected to the PCS system.

The installation position of the positive electrode wiring row and the negative electrode wiring row are arranged at intervals from left to right, each of the positive electrode cluster wiring rows is arranged at intervals on the left and right, and the length extends along the front and rear directions, and each of the negative electrode cluster wiring rows is arranged on the left and right at intervals, and the length extends along the front and rear directions .

The positive bus wiring bar is fixed on the positive cluster wiring bar through insulators when the battery cluster and the PCS system are clustered, and the negative bus wiring bar is fixed on the negative cluster wiring bar through the insulator when the battery cluster is connected to the PCS system. on the terminal block.

The positive bus connection bar extends in the left-right direction and crosses each of the positive cluster wiring bars, and the negative bus connection bar extends in the left-right direction and crosses each of the negative cluster wiring bars.

The box bottom of the box body is laid with a positive pole wiring row fixing plate and a negative pole wiring row fixing plate. superior.

Each of the positive cluster wiring bars has a positive input terminal and a positive output terminal, each of the negative cluster wiring bars has a negative input terminal and a negative output terminal, and a positive input terminal corresponding to the positive input terminal is provided on the box. A threading hole, a positive output threading hole corresponding to the positive output end, a negative input threading hole corresponding to the negative input end, and a negative output threading hole corresponding to the negative output end.

The positive input threading hole, the negative input threading hole, the positive output threading hole and the negative output threading hole are provided with waterproof joints.

The positive terminal bar is provided with a positive terminal corresponding to the positive terminal of the battery cluster, the top of the box is provided with a positive terminal hole corresponding to the positive terminal, and the negative terminal bar is provided with a negative terminal for connecting with the battery cluster. Corresponding to the negative terminal, the top of the box is provided with a negative confluence outlet hole corresponding to the negative terminal.

Waterproof connectors are provided on the positive electrode confluence outlet hole and/or the negative electrode confluence outlet hole.

Terminal lugs for crimping wires are provided on the positive electrode cluster wiring bar and/or the negative electrode cluster wiring bar.

The beneficial technical effects of the utility model are as follows: positive electrode cluster wiring bars and positive electrode converging wiring bars respectively used for corresponding connection with the positive electrodes of each battery cluster are arranged on the positive electrode wiring row installation positions in the box, and the negative electrode wiring row installation positions are provided with There are negative electrode cluster wiring bars and negative electrode bus wiring bars respectively used for corresponding connection with the negative electrodes of each battery cluster. When the dual-stage PCS DC side access method is required, each battery cluster and the PCS system need to be connected in clusters. Row insulation setting, the positive and negative poles of each battery cluster are electrically connected to the clusters of the PCS system through the positive and negative cluster wiring bars respectively; when the single-stage PCS DC side access method is required, each battery cluster needs It is connected to the PCS system through confluence. At this time, the positive electrode clustering terminal bar is electrically connected to the positive electrode converging terminal bar, and the negative electrode clustering terminal bar is electrically connected to the negative electrode converging terminal bar. The positive and negative electrodes of each battery cluster are separated from the corresponding positive electrode. The terminal block and the negative cluster terminal block are input, and are output through the positive confluence terminal block and the negative confluence terminal block. Therefore, the utility model can be applied to both single-stage and double-stage wiring modes, which expands the scope of application of the confluence device for energy storage; The positive pole clustering terminal block and the negative pole clustering terminal block are input, and the cables are output from the converging terminal block during confluence wiring, and the cables are output from the clustering terminal block during clustering wiring. There is no need to adjust the confluence device for energy storage and each For the connection cables of the battery cluster, it is only necessary to adjust the connection cables between the confluence device for energy storage and the PCS system.

Description of drawings

Figure 1 is a schematic diagram of the wiring of the single-stage PCS DC side connection mode;

Figure 2 is a schematic diagram of the wiring of the two-stage PCS DC side access mode;

Fig. 3 is a schematic diagram of the overall structure of the confluence device for energy storage in Embodiment 1 of the present utility model;

Fig. 4 is a top view of the confluence device for energy storage in Embodiment 1 of the present invention after the top cover is removed;

Fig. 5 is the A-A direction sectional view of Fig. 4;

Fig. 6 is a schematic diagram of the structure of the confluence device for energy storage in Embodiment 1 of the present utility model adopting the single-stage PCS DC side connection mode;

Fig. 7 is a schematic structural diagram of the two-stage PCS DC side connection mode of the confluence device for energy storage in Embodiment 1 of the present utility model.

detailed description

Embodiment 1 of the confluence device for energy storage of the present utility model, as shown in Fig. The two side panels are fixed with connecting plates 15, and the lower side of the connecting plates 15 is provided with an outwardly extending edge. When the confluence device for energy storage is in use, it can be drawn and installed inside the cabinet through the connecting plates 15. The left and right handles are convenient for pulling and installing. At the same time, the confluence device for energy storage can also be used as a box-type confluence device alone.

The front side panel of the box body 1 is provided with a row of input end threading holes, and each input end threading hole is provided with a front waterproof connector 2. There are 6 input end threading holes, which are divided into left and right groups and each group has 3. The two sets of input end threading holes are the positive input end threading hole and the negative electrode input end threading hole respectively; the rear side plate of the box body 1 is provided with the output end threading hole corresponding to the input end threading hole, and each output end threading hole is set There are rear waterproof connectors 5, and there are 6 output end threading holes, which are divided into two groups and each group has 3 holes. The two sets of output end threading holes are the positive output end threading hole and the negative output end threading hole respectively; There is a row of confluence outlet holes on the cover, and each confluence outlet hole is provided with an upper waterproof connector 3. There are six confluence outlet holes, which are divided into two groups and each group has three. The two groups of confluence outlet holes are positive confluence outlets respectively. Hole, negative electrode confluence outlet hole.

The interior of the box body 1 is installed with a horizontal terminal block 11 extending along the left and right directions and a longitudinal terminal block 7 extending along the front and rear directions. There are six confluence wiring bars, and there are six longitudinal wiring bars 7. The six longitudinal wiring bars are arranged at intervals and divided into two groups on average. The positive terminal block and the negative terminal block are installed at the positive terminal block, the positive cluster terminal block and the positive confluence terminal block are installed at the positive terminal site, and the negative cluster terminal block and negative confluence terminal block are installed at the negative terminal site. In this embodiment, the bottom of the box is laid with a wiring row fixing plate 6, and there are two wiring row fixing plates 6, which are respectively a positive electrode wiring row fixing plate and a negative electrode wiring row fixing plate, and the positive clustering wiring bar is fixed on the positive electrode wiring row fixing plate , the negative pole clustering terminal block is fixed on the negative pole terminal block fixing plate, the positive electrode bus terminal bar straddles the positive pole clustering terminal bar and is detachably connected with the positive pole clustering terminal bar, and the negative electrode bus terminal bar straddles the negative pole clustering terminal bar and is connected with the positive pole clustering terminal bar Negative pole cluster terminal block can be detachably connected.

When the dual-stage PCS DC side access method is required, each battery cluster and the PCS system need to be connected in clusters. Row insulation setting, the positive and negative electrodes of each battery cluster are electrically connected to the clusters of the PCS system through the positive electrode clustering wiring bar and the negative electrode clustering wiring bar respectively. An insulator 12 is provided to insulate and separate the two to avoid conductive contact between the two. In other embodiments, an insulating pad can also be placed between the positive bus terminal block and the positive cluster terminal bar to separate the two. An insulator 12 is also arranged between the negative electrode bus terminal bar and the negative electrode cluster terminal bar. The insulators are connected to the cluster terminal blocks through bolts 10 . When the single-stage PCS DC side connection method is required, each battery cluster needs to be connected to the PCS system through a confluence. At this time, the positive cluster terminal block is in conductive contact with the positive confluence terminal bar, and the negative terminal cluster terminal bar is connected to the negative confluence terminal bar. Conductive contacts of rows; the positive bus terminal bar is fixed on the positive cluster terminal bar by bolts, and the negative bus terminal bar is fixed on the negative cluster terminal bar by bolts.

The front end of the positive cluster wiring bar is the positive input terminal, which corresponds to the positive input threading hole, and the rear end of the positive cluster wiring bar is the positive output terminal, which corresponds to the positive output threading hole; the positive input terminal and the positive output end are all provided with clustering terminal nose 9 and terminal; The negative output terminals are all provided with clustered terminal lugs and terminal posts. There are three positive terminal terminals arranged at intervals along the left and right direction on the positive confluence terminal bar. There are three negative terminals arranged at intervals in the direction, the negative terminals correspond to the negative electrode confluence outlet holes, and the three negative terminal terminals are all provided with confluence terminal lugs.

When the utility model is connected with the PCS system and the battery cluster, the battery cluster has three groups, which are the first battery cluster, the second battery cluster and the third battery cluster. If the single-stage PCS DC side access method is adopted, each battery cluster and The PCS system needs to be connected in the way of confluence. When wiring, each battery cluster is connected to a positive cluster terminal block and a negative terminal cluster terminal block. The negative terminal cable is connected in the same way as the positive terminal cable. To avoid duplication, here The positive cable is described as an example; the positive cable used to connect to the positive electrode of the battery cluster is connected to the corresponding front waterproof connector, and the positive cable is respectively passed through the corresponding terminal lug and then pressed into the positive input terminal of the positive cluster terminal block ;The positive cable is output from the positive bus terminal block and connected to the upper waterproof connector on the top of the box, and finally connected to the PCS system; since the positive bus terminal bar is in contact with the positive cluster terminal wire, the current flows from the positive pole of the positive cluster terminal bar. Input at the input terminal, and then output after confluence through the bus terminal block. If the two-stage PCS DC side connection method is adopted, each battery cluster needs to be connected to the PCS system in a clustered manner. It is insulated and separated from the positive cluster wiring bar, and an insulator is also sandwiched between the negative cluster wiring bar and the negative bus terminal bar; the positive cable is input from the positive input terminal of the positive cluster wiring bar, and then from the positive cluster wiring bar The positive output terminal of the positive pole is output. Since the positive pole cluster terminal block and the positive pole bus terminal block are insulated from each other, each battery cluster is electrically connected to the PCS system independently.

In this embodiment, the wiring bars are all wiring copper bars, and the wiring lugs are all wiring copper lugs. In other embodiments of the present utility model, the fixing plate may not be provided at the bottom of the box; The top of the body and the bottom of the box body, when wiring in a converging way, detachable connecting bolts can be set between the converging wiring bar and the clustering wiring bar, so that the converging wiring bar and the clustering wiring bar are conductively connected; when wiring in a clustering way , remove the connecting bolts, and the bus terminal and the cluster terminal are insulated from each other; the cluster terminal can be arranged in parallel with the bus terminal, the length of the positive cluster terminal or the negative cluster terminal can extend along the left and right directions, and the positive cluster The terminal block and the negative pole clustering terminal block are arranged vertically to each other. In the production process of the utility model, the number of clustered wiring rows can be set according to actual needs to ensure that the number of clustered wiring rows corresponds to the number of battery clusters. indivual. The connecting plate and handle may not be provided on the box body, and the confluence device for energy storage does not need to be installed in the cabinet, and can be directly used as a confluence box.

Claims (10)

1. A confluence device for energy storage, comprising a box body with a positive terminal block installation position and a negative terminal terminal position, the positive terminal position is provided with a positive confluence terminal, and the negative terminal position is provided with a negative confluence terminal , is characterized in that: the installation position of the positive electrode wiring row is also provided with a positive electrode clustering wiring bar for correspondingly connecting with the positive electrodes of each battery cluster, and the installation position of the negative electrode wiring row is also provided with a negative electrode clustering wiring for correspondingly connecting with the negative electrodes of the battery clusters The positive electrode clustering wiring bar and the positive electrode converging wiring bar are insulated when the battery cluster is connected to the PCS system, and the negative electrode clustering wiring bar and the negative electrode converging wiring bar are insulated when the battery cluster is connected to the PCS system. The positive cluster wiring bar and the positive converging wiring bar are conductively connected when the battery cluster is converging with the PCS system, and the negative clustering wiring bar and the negative converging wiring bar are conductively connected when the battery cluster is converging and wiring with the PCS system. 2. The confluence device for energy storage according to claim 1, characterized in that: the installation positions of the positive electrode wiring row and the negative electrode wiring row are arranged at left and right intervals, and each of the positive electrode cluster wiring rows is arranged at left and right intervals, and the length is along the front and rear directions Extending, each of the negative electrode cluster wiring rows is arranged at intervals on the left and right, and the length extends along the front-to-back direction. 3. The current confluence device for energy storage according to claim 2, characterized in that: the positive confluence connection bar is fixed on the positive terminal cluster connection bar through insulators when the battery cluster and the PCS system are connected in clusters, and the negative confluence connection bar The wiring bar is fixed on the negative electrode clustering wiring bar through the insulator when the battery cluster and the PCS system are clustered and wired. 4. The confluence device for energy storage according to claim 3, characterized in that: the positive confluence connection bar extends along the left and right direction and crosses each of the positive cluster confluence connection bars, and the negative confluence connection bar extends along the left and right direction Extending and crossing each of the negative cluster wiring rows. 5. The confluence device for energy storage according to claim 4, characterized in that: the bottom of the box is laid with a positive terminal block fixing plate and a negative terminal block fixed plate, and each of the positive cluster terminal blocks is fixed on the positive terminal block On the fixing plate, each of the negative electrode clustering wiring bars is fixed on the negative electrode wiring bar fixing plate. 6. The confluence device for energy storage according to any one of claims 1-5, characterized in that: each of the positive cluster wiring bars has a positive input terminal and a positive output terminal, and each of the negative cluster wiring bars has a Negative input terminal and negative output terminal, the box body is provided with a positive input threading hole corresponding to the positive input end, a positive output threading hole corresponding to the positive output end, and a negative input threading hole corresponding to the negative input end And the negative output threading hole corresponding to the negative output terminal. 7 . The confluence device for energy storage according to claim 6 , wherein waterproof joints are provided on the positive input threading hole, the negative input threading hole, the positive output threading hole and the negative output threading hole. 8. The confluence device for energy storage according to any one of claims 1-5, characterized in that: the positive confluence terminal bar is provided with a positive terminal corresponding to the positive pole of the battery cluster, and the top of the box is provided with a There is a positive confluence outlet hole corresponding to the positive terminal, and a negative terminal corresponding to the negative pole of the battery cluster is provided on the negative confluence terminal bar, and a negative confluence outlet hole corresponding to the negative terminal is opened on the top of the box. 9. The confluence device for energy storage according to claim 8, characterized in that: the positive confluence outlet hole and/or the negative confluence outlet hole are provided with waterproof joints. 10. The confluence device for energy storage according to any one of claims 1-5, characterized in that: the positive electrode clustered wiring bar and/or the negative electrode clustered wiring bar are provided with wiring lugs for crimping wires.