Distributed energy storage battery combiner box device

Abstract

The utility model provides a distributed energy storage battery combiner box device, comprising a box body which is composed of a combiner hole through which a connecting line passes, and the combiner hole is arranged above the box body; positive and negative electrode power lines of distributed battery packs are connected into the box body through confluence holes, positive electrode connecting lines of the battery packs are connected into wiring terminals of fuses after being connected into the box body, wiring terminals at the other ends of the fuses are connected with data acquisition modules respectively, and the positive electrode connecting lines of the battery packs are connected into positive electrode bus bars after passing through the data acquisition modules. After being integrated by a bus bar, the data are connected to an inlet terminal of the trunk control module; and a cathode connecting line of the battery pack is connected to the box body through the bus hole, then connected to the cathode bus bar below, and connected to the inlet terminal of the trunk control module after being integrated by the bus bar. The combiner box is responsible for carrying out coordinated management on multiple paths of batteries in the distributed energy storage system, and it is ensured that the multiple paths of batteries are effectively controlled respectively or uniformly.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy storage, and in particular to a distributed energy storage battery junction box device. Background Art

[0002] With the continuous development of energy storage technology, distributed energy storage systems are becoming more and more important. Distributed energy storage systems help balance the load of the power grid. They can store excess electricity during peak and valley periods and release it when needed. This helps to reduce the burden on the power grid, improve the efficiency of the power grid, and improve the stability and reliability of the system. The safety and effective management of battery packs are key issues in distributed energy storage systems. In order to ensure the safe operation of battery packs and deal with failures and disasters, effective fault isolation and protection devices are required to prevent further damage to the system when it is inevitable. Summary of the invention

[0003] The technical problem to be solved by the utility model is to solve the current fusion and safety protection problems between battery groups in a distributed energy storage system, coordinate the management of multiple battery groups, and provide a distributed energy storage battery junction box device.

[0004] The utility model provides a distributed energy storage battery junction box device, comprising: a box body, which is composed of a junction hole arranged above the box body and through which a connecting line passes; a distributed battery pack, whose positive and negative power lines are both connected to the box body through the junction hole, the positive connecting line of the battery pack is respectively connected to the wiring terminals of the fuse after being connected to the box body, and the other end wiring terminals of the fuse are respectively connected to a data acquisition module, the data acquisition module is connected to a controller through a communication line, and the control signal of the controller is connected to the control end of the main circuit control module through the communication line; the positive connecting line of the battery pack is connected to the positive bus bar after passing through the data acquisition module, and is connected to the inlet terminal of the main circuit control module after being integrated by the bus bar; the negative connecting line of the battery pack is connected to the box body through the junction hole, and is connected to the negative bus bar below, and is connected to the inlet terminal of the main circuit control module after being integrated by the bus bar.

[0005] The positive bus bar is an inserted bus bar, which is composed of several bus bars and connecting wires connecting adjacent bus bars. The hard connecting wires can be one or more, and the hard connecting wires can be one or two hard metal wires that pass through each bus bar. An electrode connecting piece is provided at one end of the bus bar. The electrode connecting piece is a plug-in structure and can be inserted into the output positive electrode of the data acquisition module. A bus output terminal is provided on the side of the outermost bus bar, and the bus output terminal is connected to the wire after the bus bar is connected.

[0006] The data acquisition module is equipped with a current sensor and a voltage sensor to monitor the current and voltage signals in the battery pack.

[0007] Current sensors monitor current changes in the battery pack, and voltage sensors measure the voltage of the battery cells or modules.

[0008] A lightning arrester is provided on the inlet terminal connection line of the trunk control module, and the lightning arrester is connected to the grounding wire.

[0009] The technical effect of the utility model is as follows: the combiner box is responsible for coordinating and managing multiple batteries in the distributed energy storage system, ensuring effective individual or unified control of the multiple batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described in detail below in conjunction with the accompanying drawings of the specification:

[0011] Figure 1 This is the internal layout diagram of the distributed energy storage battery combiner box of the utility model;

[0012] Figure 2 This is the appearance diagram of the distributed energy storage battery combiner box of the utility model;

[0013] Figure 3 It is a schematic diagram of the positive bus bar in the combiner box of the utility model.

[0014] Figure numerals: box body 1, busbar 2, ventilation side panel 3, positive electrode connecting line 4, fuse 5, controller 6, data acquisition module 7, main line control module 8, positive bus bar 9, negative bus bar 10, output line 11, lightning arrester 12, grounding wire 13, electrode connecting piece 14, connecting wire 15, bus bar 16, bus output terminal 17. DETAILED DESCRIPTION

[0015] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below with reference to the accompanying drawings. In order to make the purpose, technical solutions and advantages of the utility model more clear, the utility model is further described in detail below through the accompanying drawings and specific implementation examples.

[0016] The utility model provides a distributed energy storage battery combiner box, which consists of a box body 1 and internal circuits. A combiner hole 2 for connecting wires to pass through is arranged above the box body 1. The positive and negative power lines of the distributed battery packs are connected to the box body through the combiner hole 2.

[0017] After the positive electrode connection line 4 of the battery pack is connected to the box, it is respectively connected to the connection terminal of the fuse 5. The other end connection terminal of the fuse 5 is respectively connected to the data acquisition module 7, and then connected to the positive electrode bus bar 9 through the data acquisition module 7. After the bus bar is integrated, it is connected to the entrance terminal of the main circuit control module 8.

[0018] The positive bus bar 9 is an insertable bus bar, which is composed of a number of bus bars 16 and connecting wires 15 connecting adjacent bus bars 16. The connecting wires 15 may be one or more, and the connecting wires 15 may be one or two hard metal wires that pass through each bus bar 16. An electrode connecting piece 14 is provided at one end of the bus bar. The electrode connecting piece 14 is a plug-in structure that can be inserted into the output positive electrode of the data acquisition module 7. A bus output terminal 17 is provided on the side of the outermost bus bar 16, and the bus output terminal 17 is connected to the wire after the bus bar is connected. The positive bus bar avoids the cumbersomeness caused by screw connection of the wire and simplifies the operation. The setting of the hard connecting wire 15 takes into account the distance constraint between the bus bars and the need for fine-tuning of the corresponding jacks.

[0019] After the negative electrode connection line of the battery pack is connected to the box through the bus hole 2, it is connected to the negative electrode bus bar 10 below, and after being integrated by the bus bar, it is connected to the inlet terminal of the main circuit control module 8.

[0020] The data acquisition module 7 is provided with a current sensor and a voltage sensor. After the data acquisition module 7 acquires the current and voltage signals of the positive connection lines of each battery pack, the signals are connected to the controller 6 through the communication line. The control signal of the controller 6 is connected to the control end of the trunk control module 8 through the communication line. Each branch line in the data acquisition module is also provided with a power diode to prevent current backflow.

[0021] A lightning arrester 12 is connected to the inlet terminal connection line of the trunk control module 8 , and the lightning arrester 12 is connected to the grounding line 13 .

[0022] Bus bars are conductive elements that connect the individual battery cells or modules within a battery pack, ensuring that current can flow freely within the battery pack.

[0023] Current sensors monitor current changes in the battery pack. Voltage sensors measure the voltage of the battery cells or modules. This helps monitor the voltage balance in the battery pack.

[0024] The controller 6 is connected to various sensors and actuators, and executes control algorithms to maintain safe operation and optimize performance of the system. It interacts with external systems through communication modules.

[0025] The main circuit control module is used to cut off the connection between the battery pack and other systems when necessary. The main circuit control module quickly removes the faulty string from the system operation without affecting other normally working battery packs.

[0026] A lightning arrester is connected to the battery bank to protect the system from weather factors such as lightning strikes.

[0027] The ground system is connected to the battery pack to ensure the grounding of the system and provide an electrical connection to ground.

[0028] Circuit breakers cut off the circuit in case of fault or emergency to ensure safe operation of the system.

[0029] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A distributed energy storage battery combiner box device, comprising: A box body (1) is composed of a confluence hole (2) arranged above the box body through which the connection line passes; the distributed battery pack, whose positive and negative power lines are connected to the box body through the confluence hole (2), is characterized in that: the positive connection line (4) of the battery pack is connected to the box body and then connected to the connection terminal of the fuse (5), and the other end of the connection terminal of the fuse (5) is connected to the data acquisition module (7), the data acquisition module (7) is connected to the controller (6) through the communication line, and the control signal of the controller (6) is connected to the control end of the main control module (8) through the communication line; The positive electrode connection line (4) of the battery pack passes through the data acquisition module (7) and is connected to the positive electrode bus bar (9), and is connected to the inlet terminal of the main circuit control module (8) after being integrated with the bus bar; the negative electrode connection line of the battery pack passes through the bus hole (2) and is connected to the box body, and is connected to the negative electrode bus bar (10) below, and is connected to the inlet terminal of the main circuit control module (8) after being integrated with the bus bar.

2. A distributed energy storage battery combiner box device according to claim 1, characterized in that: The positive electrode bus bar (9) is an insertable bus bar, which is composed of a plurality of bus bars (16) and a hard connecting wire (15) connecting adjacent bus bars (16). An electrode connecting piece (14) is provided at one end of the bus bar, and the electrode connecting piece (14) is inserted into the output positive electrode of the data acquisition module (7). A bus output terminal (17) is provided on the side of the outermost bus bar (16), and the bus output terminal (17) is connected to the conductor after busing.

3. A distributed energy storage battery combiner box device according to claim 2, characterized in that: The hard connection wire (15) is one or two hard metal wires that penetrate each busbar (16), and the electrode connecting piece (14) is a plug-in structure.

4. A distributed energy storage battery combiner box device according to claim 1, characterized in that: The data acquisition module (7) is provided with a current sensor and a voltage sensor to monitor the current and voltage signals in the battery pack.

5. A distributed energy storage battery combiner box device according to claim 4, characterized in that: Current sensors monitor current changes in the battery pack, and voltage sensors measure the voltage of the battery cells or modules.

6. A distributed energy storage battery combiner box device according to claim 5, characterized in that: A lightning arrester (12) is provided on the inlet terminal connection line of the trunk control module (8), and the lightning arrester (12) is connected to the grounding line (13).

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