Multifunction busbar structure of all-vanadium redox flow battery energy storage system

Abstract

The utility model relates to all vanadium liquid flow battery energy storage system technical field especially a kind of multifunctional busbar structure of all vanadium liquid flow battery energy storage system, including busbar mainboard, connecting strip and isolation strip, multiple isolation strips are fixedly installed in the side of connecting strip, the inside upper side of busbar mainboard is equipped with independent parallel structure, the inside lower side of busbar mainboard is equipped with independent series structure.The multifunctional busbar structure of all vanadium liquid flow battery energy storage system can form the structure design of layered or zoned on a busbar, the upper layer of busbar is set as series connection area, the lower layer is set as parallel connection area, by being provided with specific connecting point and conducting circuit on busbar, the series parallel connection between electric pile is realized, then cooperate fast pluggable connection structure, socket and plug connector realize the quick connection and disconnection between electric pile, facilitate the series parallel combination of electric pile, improve the reliability and security of connection simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of vanadium redox flow battery energy storage systems, specifically a multifunctional busbar structure for a vanadium redox flow battery energy storage system. Background Technology

[0002] In electrical and electrochemical systems, a busbar is a key conductive component used to collect, distribute, and conduct large currents. Essentially, it is the main channel or transfer station for current. Its core function is to replace a large number of scattered wires and realize the efficient and low-loss flow of current between multiple components and systems.

[0003] For example, the authorization announcement number "CN222720617U" describes a busbar with a left side panel and a right side panel that are both planar. During welding, the battery cell's tabs are simply attached to the left side panel and the right side panel for welding. The welding operation is simple. Existing busbars are connected to vanadium redox flow batteries in either parallel or series connections. Series connection of vanadium redox flow batteries and other energy storage systems increases the total voltage, while parallel connection increases the total current. In the use of vanadium redox flow battery energy storage systems, there may be needs such as stack replacement, capacity adjustment, and fault repair. Traditional fixed series-parallel connection schemes require dismantling a large number of wires, resulting in high operation and maintenance costs. Utility Model Content

[0004] The purpose of this invention is to address the challenges of existing busbars, such as the need for stack replacement, capacity adjustment, and fault repair during use. Traditional fixed series-parallel connection schemes require the dismantling of a large number of wires, resulting in high operation and maintenance costs. Therefore, this invention proposes a multifunctional busbar structure for a vanadium redox flow battery energy storage system.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multifunctional busbar structure for a vanadium redox flow battery energy storage system is designed, including a busbar main board, connecting strips, and isolation strips. The connecting strips are fixedly installed on the inner side of the busbar main board, and multiple isolation strips are fixedly installed on one side of the connecting strips. An independent parallel structure is provided on the upper inner side of the busbar main board, and an independent series structure is provided on the lower inner side of the busbar main board. A wiring connection structure is provided on one side of the busbar main board.

[0007] This setup, with the connecting strip and multiple vertical isolation strips, divides the bus mainboard into two independent spaces, upper and lower. The upper space is used for connecting parallel lines, while the lower space is used for connecting series lines. Both the isolation strips and the connecting strips are made of insulating material.

[0008] Preferably, the independent parallel structure includes an insulating plate and an upper positioning plate. The insulating plate is fixedly installed inside the upper part of the bus main board. The upper positioning plate is fixedly installed on the inner side of the insulating plate. Multiple parallel stacks are fixedly connected to the outer side of the upper positioning plate. The top of the multiple parallel stacks is fixedly connected to a connecting wire, and the ends of the multiple connecting wires are fixedly connected to parallel lines.

[0009] In this setup, the insulating board is made of highly insulating ceramic material, and a highly conductive copper plate is embedded inside the insulating board. The upper positioning plate, made of copper, serves as a parallel bus structure to replace a large number of wires. At intervals, the upper positioning plate supports a parallel stack of electrodes by connecting strips protruding from the outer wall. Each parallel stack of electrodes forms a parallel structure by means of parallel lines, thus forming a parallel bus.

[0010] Preferably, the multiple parallel stacks are electrically connected by parallel lines.

[0011] In this configuration, each parallel stack relies on parallel lines to form a parallel structure, creating a parallel bus configuration.

[0012] Preferably, the independent series structure includes a lower positioning plate and a terminal block. The terminal block is fixedly installed inside the busbar main board, and the lower positioning plate is fixedly installed inside the lower part of the busbar main board. Multiple series stacks are fixedly connected to the outside of the lower positioning plate. A series connection point is fixedly installed at the top of the multiple series stacks, and a series line is fixedly connected to both sides of the multiple series connection points.

[0013] In this configuration, the terminal block is fixedly installed inside the busbar main board. The terminal block is used to connect to the negative terminal of the vanadium redox flow battery energy storage system. The lower positioning plate is fixedly installed inside the lower part of the busbar main board. Like the upper positioning plate, the lower positioning plate is wrapped with insulating material on both sides and relies on highly conductive copper metal in the middle as the busbar structure. However, the lower positioning plate has multiple parallel series stacks. The multiple series stacks are connected in series by series connection points and series lines.

[0014] Preferably, the wiring connection structure includes a connector and an external wire. Two connectors are fixedly disposed on the side wall of the bus main board. Multiple plugs are movably connected to the inner side of the two connectors. A mating end is fixedly connected to the rear side of the multiple plugs. The two external wires are fixedly connected to the rear side of the mating end.

[0015] In this configuration, the inner side of the connector uses a metallic silver conductor to connect to two independent parallel and series busbars respectively. The main line of the battery system, that is, the external wire, can be inserted into the inner side of the connector at the end of the busbar main board by multiple metallic copper plugs at the front end of the connector. When disassembling and maintaining the series and parallel lines, the power can be disconnected by simply unplugging and plugging the plug.

[0016] Preferably, the other end of the plug is connected to the parallel circuit and the series circuit, and the other ends of the parallel circuit and the series circuit are fixedly connected to the terminal block.

[0017] This configuration, where the circuit enters from the left end of the busbar mainboard and exits from the terminal block on the other side, is a unidirectional wiring method that saves a lot of complex and messy wiring, making the wiring of the vanadium redox flow battery energy storage system much simpler.

[0018] The present invention proposes a multifunctional busbar structure for a vanadium redox flow battery energy storage system. The advantages are as follows: a layered or partitioned structural design can be formed on a single busbar, with the upper layer of the busbar set as a series connection area and the lower layer as a parallel connection area. By setting specific connection points and conductive lines on the busbar, series and parallel connections between battery stacks can be realized. Then, with the quick-pluggable connection structure, sockets and plugs can realize the rapid connection and disconnection between battery stacks, facilitating the series and parallel combination of battery stacks, while improving the reliability and safety of the connection. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 for Figure 1 A frontal sectional view;

[0021] Figure 3 for Figure 1 A schematic diagram of the top sectional view;

[0022] Figure 4 for Figure 2 Enlarged diagram of part A in the middle;

[0023] Figure 5 for Figure 2 Enlarged diagram of part B in the middle;

[0024] Figure 6 for Figure 2 Enlarged diagram of part C in the middle.

[0025] In the diagram: 1. Busbar main board, 2. Connecting strip, 3. Isolation strip, 4. Independent parallel structure, 41. Insulation board, 42. Upper positioning plate, 43. Parallel fuel cell stack, 44. Connecting wire, 45. Parallel circuit, 5. Independent series structure, 51. Lower positioning plate, 52. Series fuel cell stack, 53. Series connection point, 54. Series circuit, 55. Terminal block, 6. Wiring connection structure, 61. Socket, 62. Plug, 63. Connecting end, 64. External wire. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Example:

[0028] Please see Figure 1-6 In this embodiment, a multifunctional busbar structure for a vanadium redox flow battery energy storage system includes a busbar main board 1, connecting strips 2, and isolation strips 3. The connecting strips 2, together with multiple vertical isolation strips 3, divide the busbar main board 1 into two independent spaces, upper and lower. The upper space is used for parallel circuits, while the lower space is used for series circuits. Both the isolation strips 3 and the connecting strips 2 are made of insulating material. The connecting strips 2 are fixedly installed on the inner side of the busbar main board 1, and multiple isolation strips 3 are fixedly installed on one side of the connecting strips 2. An independent parallel structure 4 is provided on the upper inner side of the busbar main board 1, an independent series structure 5 is provided on the lower inner side of the busbar main board 1, and a wiring connection structure 6 is provided on one side of the busbar main board 1.

[0029] The independent parallel structure 4 includes an insulating plate 41 and an upper positioning plate 42. The insulating plate 41 is fixedly installed inside the upper part of the bus main board 1. The insulating plate 41 is made of highly insulating ceramic material. A highly conductive copper plate is embedded in the inner side of the insulating plate 41. The upper positioning plate 42, made of copper, serves as a parallel bus structure that replaces a large number of wires. At intervals, the upper positioning plate 42 supports a parallel stack 43 by a connecting strip 2 protruding from its outer wall. Each parallel stack 43 is connected in parallel by a parallel line 45 to form a parallel bus. The upper positioning plate 42 is fixedly installed inside the insulating plate 41. Multiple parallel stacks 43 are fixedly connected to the outer side of the upper positioning plate 42. The top of the multiple parallel stacks 43 is fixedly connected to a connecting wire 44. The ends of the multiple connecting wires 44 are fixedly connected to a parallel line 45. The multiple parallel stacks 43 are electrically connected to each other by the parallel line 45.

[0030] The independent series structure 5 includes a lower positioning plate 51 and a terminal block 55. The terminal block 55 is fixedly installed inside the busbar main board 1 and is used to connect to the negative terminal of the vanadium redox flow battery energy storage system. The lower positioning plate 51 is fixedly installed inside the lower part of the busbar main board 1. The lower positioning plate 51 is the same as the upper positioning plate 42, with insulating material on both sides and high-conductivity copper metal in the middle as the busbar structure. However, the lower positioning plate 51 has multiple parallel series stacks 52. The multiple series stacks 52 are connected in series by series connection points 53 and series lines 54. Multiple series stacks 52 are fixedly connected to the outside of the lower positioning plate 51. Series connection points 53 are fixedly installed on the top of the multiple series stacks 52. Series lines 54 are fixedly connected to both sides of the multiple series connection points 53.

[0031] The wiring connection structure 6 includes a connector 61 and an external conductor 64. Two connectors 61 are fixedly installed on the side wall of the bus main board 1. The inner side of the connector 61 uses a silver conductor to connect to two independent parallel busbars and series busbars respectively. The main line of the battery system, namely the external conductor 64, can be inserted into the inner side of the connector 61 at the end of the bus main board 1 by means of multiple copper metal plugs 62 at the front end of the docking end 63. When disassembling and maintaining the series and parallel lines, the power can be disconnected by simply unplugging and plugging the plugs 62. Moreover, the circuit enters from the left end of the bus main board 1 and exits from the terminal block 55 on the other side. The unidirectional wiring method saves a lot of complex and messy wiring, making the wiring of the vanadium redox flow battery energy storage system simpler. Multiple plugs 62 are movably connected to the inner side of the two connectors 61. The docking end 63 is fixedly connected to the rear side of the multiple plugs 62. The two external conductors 64 are fixedly connected to the rear side of the docking end 63.

[0032] The other end of plug 62 is connected to parallel line 45 and series line 54, and the other ends of parallel line 45 and series line 54 are fixedly connected to terminal block 55.

[0033] Working principle:

[0034] In a vanadium redox flow battery energy storage system, the busbar is the core conductive component that enables centralized current conduction and series-parallel control of the stack. Essentially, it is the main channel and distribution hub of the current in the system. It not only collects the current of multiple individual cells inside the stack, but also connects multiple stacks to achieve series-parallel combination. At the same time, it often integrates functions such as voltage acquisition and internal resistance detection. It is a key component to ensure the efficient and safe operation of the system.

[0035] The connecting strip 2, together with multiple vertical isolation strips 3, divides the bus main board 1 into two independent spaces, upper and lower. The upper space is used for parallel lines to connect, while the lower space is used for series lines to connect. Both the isolation strips 3 and the connecting strip 2 are made of insulating material.

[0036] The insulating plate 41 is made of highly insulating ceramic material. A highly conductive copper plate is embedded inside the insulating plate 41. The upper positioning plate 42, made of copper, serves as a parallel bus structure to replace a large number of wires. Every certain distance, the upper positioning plate 42 supports a parallel stack 43 by a connecting strip 2 protruding from the outer wall. Each parallel stack 43 is connected in parallel by parallel lines 45 to form a parallel bus structure.

[0037] The lower positioning plate 51 is fixedly installed inside the lower part of the bus main board 1. Like the upper positioning plate 42, the lower positioning plate 51 is wrapped with insulating material on both sides and relies on highly conductive copper metal in the middle as the bus structure. However, the lower positioning plate 51 has multiple parallel series stacks 52. The multiple series stacks 52 are connected in series by series connection points 53 and series lines 54. Therefore, a layered or partitioned structural design can be formed on a bus. The upper layer of the bus is set as the series connection area and the lower layer is set as the parallel connection area. By setting specific connection points and conductive lines on the bus, the series and parallel connection between the stacks can be realized. Then, with the quick pluggable connection structure, socket and plug connectors, the quick connection and disconnection between the stacks can be realized, which facilitates the series and parallel combination of the stacks and improves the reliability and safety of the connection.

[0038] The inner side of the connector 61 uses a metallic silver conductor to connect to two independent parallel and series busbars respectively. The main line of the battery system, namely the external wire 64, can be inserted into the inner side of the connector 61 at the end of the busbar main board 1 by means of multiple metallic copper plugs 62 at the front end of the docking end 63. When disassembling and maintaining the series and parallel lines, the power can be disconnected by simply unplugging and plugging the plugs 62. Moreover, the circuit enters from the left end of the busbar main board 1 and exits from the terminal block 55 on the other side. The unidirectional wiring method saves a lot of complicated and messy wiring, making the wiring of the vanadium redox flow battery energy storage system simpler.

[0039] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A multifunctional busbar structure for a vanadium redox flow battery energy storage system, comprising a busbar main board (1), connecting strips (2) and insulating strips (3), wherein the connecting strips (2) are fixedly installed on the inner side of the busbar main board (1), and a plurality of the insulating strips (3) are fixedly installed on one side of the connecting strips (2), characterized in that: The bus main board (1) has an independent parallel structure (4) on its upper inner side, an independent series structure (5) on its lower inner side, and a wiring connection structure (6) on one side of the bus main board (1).

2. The multifunctional busbar structure of the all-vanadium redox flow battery energy storage system according to claim 1, characterized in that: The independent parallel structure (4) includes an insulating plate (41) and an upper positioning plate (42). The insulating plate (41) is fixedly installed inside the upper part of the bus main board (1). The upper positioning plate (42) is fixedly installed on the inner side of the insulating plate (41). Multiple parallel stacks (43) are fixedly connected to the outer side of the upper positioning plate (42). The top of the multiple parallel stacks (43) is fixedly connected to a connecting wire (44), and the ends of the multiple connecting wires (44) are fixedly connected to a parallel line (45).

3. The multifunctional busbar structure of the all-vanadium redox flow battery energy storage system according to claim 2, characterized in that: The multiple parallel stacks (43) are electrically connected by parallel lines (45).

4. The multifunctional busbar structure of the all-vanadium redox flow battery energy storage system according to claim 1, characterized in that: The independent series structure (5) includes a lower positioning plate (51) and a terminal block (55). The terminal block (55) is fixedly installed inside the bus main board (1). The lower positioning plate (51) is fixedly installed inside the lower part of the bus main board (1). Multiple series stacks (52) are fixedly connected to the outside of the lower positioning plate (51). A series connection point (53) is fixedly installed at the top of the multiple series stacks (52). A series line (54) is fixedly connected to both sides of the multiple series connection points (53).

5. The multifunctional busbar structure of the all-vanadium redox flow battery energy storage system according to claim 1, characterized in that: The wiring connection structure (6) includes a plug (61) and an external wire (64). Two plugs (61) are fixedly opened on the side wall of the bus main board (1). Multiple plugs (62) are movably connected to the inner side of the two plugs (61). A docking end (63) is fixedly connected to the rear side of the multiple plugs (62). Two external wires (64) are fixedly connected to the rear side of the docking end (63).

6. The multifunctional busbar structure of the all-vanadium redox flow battery energy storage system according to claim 5, characterized in that: The other end of the plug (62) is connected to the parallel line (45) and the series line (54), and the other ends of the parallel line (45) and the series line (54) are fixedly connected to the terminal block (55).

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