Flow battery distribution box

Abstract

The utility model discloses a flow battery distribution box, and belongs to the technical field of new energy. The power distribution box mainly comprises a box body, two power-on modules and a current protector, each power-on module is electrically connected with a corresponding electric pile outwards, the power-on modules are vertically arranged, the two power-on modules are arranged in the box body side by side, the current protector is connected between the two power-on modules, and the current protector is connected with the power-on modules. And the two electrifying modules and the current protector form a structure shaped like a Chinese character'ji '. The flow battery distribution box disclosed by the utility model can be adapted to a narrow space between electric piles in a flow battery, so that the damage caused by current overload is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to a liquid flow battery distribution box. Background Art

[0002] A flow battery system primarily consists of an electrochemical reactor stack (multiple cells connected in series) and tanks for storing positive and negative electrolytes. Driven by pumps, the positive and negative electrolytes circulate through the positive and negative electrodes of each cell, respectively, generating electrochemical reactions that charge and discharge the flow battery.

[0003] Existing flow battery systems can reach kilowatt- or even gigawatt-level power. However, the power of a single stack is limited, necessitating the assembly of more than a dozen stacks in series or parallel before being placed in a shipping container. Existing series connection of stacks involves directly connecting the power supply board on one stack to the power supply board on another stack via conductive components, which poses the risk of overcurrent damage to circuits and electrical systems. Existing distribution boxes designed for other power systems are also relatively wide and cannot fit into the confined space between stacks within a shipping container.

[0004] Therefore, it is necessary to provide a new liquid flow battery distribution box that can adapt to the narrow space between the battery stacks in the liquid flow battery. Utility Model Content

[0005] Based on the above-mentioned problems existing in the prior art, the purpose of the embodiments of the present invention is to provide a liquid flow battery distribution box that can adapt to the narrow space between the battery stacks in the liquid flow battery and avoid damage caused by current overload.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a liquid flow battery distribution box, including a box body, two power-on modules and a current protector, each power-on module is electrically connected to the corresponding battery stack outward, the power-on modules are arranged vertically, and the two power-on modules are arranged side by side in the box body. The current protector is connected between the two power-on modules, so that the two power-on modules and the current protector form a "J"-shaped structure.

[0007] Furthermore, the power-on module is provided with a bending portion, and the current protector is connected to the bending portions of the two power-on modules.

[0008] Furthermore, the power-on module includes a conductive unit 1 and a conductive unit 2 connected sequentially from top to bottom; the current protector is connected between the two conductive units 1 of the two power-on modules; and the two conductive units 2 are electrically connected to the corresponding battery stacks respectively.

[0009] Furthermore, the power supply module is connected to an on-off switch.

[0010] Furthermore, the on-off switch is arranged between the conductive unit 1 and the conductive unit 2 and is connected to the box.

[0011] Furthermore, the box body is provided with a wire-threading plate with insulating properties, and the wire-threading plate is provided with perforations.

[0012] Furthermore, waist-shaped screw holes are provided on the threading plate corresponding to the box body.

[0013] Furthermore, a current sensor is installed in the box, and the current sensor is connected to the power supply module.

[0014] Furthermore, terminals are installed in the box.

[0015] Furthermore, a wiring harness hole is provided on the box body.

[0016] The beneficial effects of the present invention are as follows: the liquid flow battery distribution box provided by the present invention includes a box body, two power-on modules and a current protector, each power-on module is electrically connected to the corresponding battery stack outward, the power-on modules are arranged vertically, the two power-on modules are arranged side by side in the box body, and the current protector is connected between the two power-on modules, so that the two power-on modules and the current protector form a "J"-shaped structure, which compresses and reduces the horizontal occupied space of the power-on modules, so that the liquid flow battery distribution box presents a narrow structure, so that the liquid flow battery distribution box can adapt to the narrow space between the battery stacks in the liquid flow battery, avoiding current overload and damage to the circuit.

[0017] The utility model realizes active disconnection of the circuit through an on-off switch. The on-off switch is installed on the vertical power-on module to further reduce the horizontal space occupied by the on-off switch, and adapts to the narrow space between the battery stacks in the liquid flow battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the flow battery distribution box provided in an embodiment of the utility model.

[0020] Figure 2 for Figure 1 Front view of the flow battery distribution box shown.

[0021] In the figures, the reference numerals are: 1, box body; 11, harness hole; 12, mounting hole;

[0022] 2. Power supply module; 21. Conductive unit 1; 22. Conductive unit 2;

[0023] 3. Current protector;

[0024] 4. On-off switch; 41. Switch base;

[0025] 5. Thread board; 51. Thread hole;

[0026] 6. Sensor; 7. Terminal. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0028] It should be noted that when an element is referred to as being "connected to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0031] Throughout the specification, reference to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Therefore, the phrases "in one embodiment", "in some embodiments", or "in some of the embodiments" appearing in various places throughout the specification are not all referring to the same embodiment. Furthermore, particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0032] Please refer to Figures 1 to 2 As shown in the figure, the liquid flow battery distribution box provided by the utility model will be described, the liquid flow battery distribution box includes a box body 1, two power-on modules 2 and a current protector 3, each power-on module 2 is respectively electrically connected with a corresponding electric pile (not shown in the figure) outward, the power-on modules 2 are vertically arranged, the two power-on modules 2 are arranged side by side in the box body 1, the current protector 3 is connected between the two power-on modules 2, so that the two power-on modules 2 and the current protector 3 form a 'j' shape structure, thus the compression reduces the transverse space occupied by the power-on modules 2, so that the liquid flow battery distribution box presents a narrow structure, thereby enabling the liquid flow battery distribution box to adapt to the narrow space between the electric piles in the liquid flow battery.

[0033] As shown in the figure, Figure 1 In some embodiments, the power-on module 2 is provided with a bending part inward, and the current protector 3 is connected with the bending parts of the two power-on modules 2. The setting of the bending part can further reduce the transverse space occupied by the power-on module 2.

[0034] As shown in the figure, Figure 1 In some embodiments, the power-on module 2 includes a conductive unit one 21 and a conductive unit two 22 connected in sequence from top to bottom, so that the power-on module 2 is vertically arranged as a whole. Specifically, in this embodiment, the conductive unit one 21 and the conductive unit two 22 are copper bars with excellent conductivity.

[0035] When the current overload through the current protector 3 is disconnected, the electrical connection between the two power-on modules 2 is disconnected, thereby playing a role in protecting the circuit and electricity; as shown in the figure, Figure 1 In some embodiments, more specifically, the current protector 3 is connected at a position spaced between the two conductive unit ones 21 of the two power-on modules 2, so that the two power-on modules 2 and the current protector 3 form a 'j' shape structure, and the two conductive unit twos 22 are respectively electrically connected with the corresponding electric piles (not shown in the figure). Specifically, in this embodiment, the current protector 3 is a fuse.

[0036] As shown in the figure, Figure 1 In some embodiments, the power-on module 2 is connected with an on-off switch 4, and the on-off switch 4 is used for controlling the on or off of the current on the power-on module 2, so that when the circuit needs to be actively disconnected, the on-off switch 4 in the two power-on modules 2 that are turned on can be turned off. Specifically, in this embodiment, the on-off switch 4 is a contactor. The on-off switch 4 is installed on the vertical power-on module 2, further reducing the transverse space occupied by the on-off switch 4, and adapting to the narrow space between the electric piles in the liquid flow battery.

[0037] As shown in the figure, Figure 1As shown, more specifically, the on-off switch 4 is disposed between the conductive unit 1 21 and the conductive unit 2 22 , so that the on-off switch 4 can control the conduction or disconnection of the current between the conductive unit 1 21 and the conductive unit 2 22 .

[0038] like Figure 1 As shown, in some embodiments, the on-off switch 4 is fixedly mounted on the housing 1 via a switch base 41. That is, the on-off switch 4, the conductive unit 1 21 and the conductive unit 2 22 connected to the on-off switch 4, and the current protector 3 connected to the conductive unit 21 are mounted in the housing 1 via the switch base 41.

[0039] like Figure 1 As shown, in some embodiments, a wire drawing plate 5 with insulating properties is provided on both sides of the box body 1, and a through-hole 51 is provided on the wire drawing plate 5, and the through-hole 51 is used for the power module 2 to be connected to the power supply board of the battery stack outward. Specifically, the connection row connected to the power supply board of the battery stack passes through the through-hole 51 into the box body 1 and is electrically connected to the corresponding power module 2. Specifically, the wire drawing plate 5 is provided at the side and lower position of the box body 1, and the through-hole 51 on the wire drawing plate 5 is aligned with the conductive unit 2 22 of the power supply module 2. Specifically, in the present embodiment, the wire drawing plate 5 is made of epoxy resin, which makes the wire drawing plate 5 have the advantages of high strength, good insulation performance and good stability. In addition, a waist-shaped screw hole is provided on the wire drawing plate 5 corresponding to the box body 1, which is convenient for adjusting the position of the wire drawing plate 5 installed on the box body 1.

[0040] like Figure 1 As shown, in some embodiments, a current sensor 6 is installed in the housing 1. The current sensor 6 is used to monitor the current and is connected to the power module 2. Specifically, in this embodiment, the current sensor 6 is a Hall sensor. Due to the constraints of the voltage and capacity of the single cell stack, in order to meet the high voltage and large capacity requirements of electrical equipment and energy storage systems, liquid flow batteries are usually used in series, parallel or a combination of series and parallel. However, inconsistencies are inevitable in the manufacturing process of liquid flow batteries. Since the internal resistance of the battery cells is not exactly the same, the imbalance of charge and discharge will cause the current imbalance between the stacks, thereby causing circulation between the stacks. The circulation between the stacks will destroy the balance of the battery, resulting in a shortened life of the stack or damage. Adding a current sensor can further increase the monitoring of the current between the stacks, and provide measurement data for the subsequent control cabinet and the equalizer to balance the current between the stacks.

[0041] like Figure 1 As shown, in some embodiments, a terminal 7 is installed in the housing 1. Terminal 7 facilitates the organization of wires, facilitates the installation of remote controls, controls the closing and opening of connections, facilitates maintenance and testing, enables signal or current and voltage transmission, manages lines in groups, and improves connection reliability. The current sensor 6, on / off switch 4, current protector 3, etc. are connected to the flow battery control cabinet via terminal 7.

[0042] like Figure 1 As shown, in some embodiments, a wiring harness hole 11 is opened on the box body 1, and the wiring harness hole 11 is used for external wiring to pass through the box body 1.

[0043] like Figure 1 Figure 2 As shown, in some embodiments, the box body 1 is provided with a mounting hole 12 for connecting and positioning the box body 1 with the outside. The mounting hole 12 is preferably an oblong hole, which is convenient for adjusting the installation position of the box body 1.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Liquid flow battery distribution box, characterized by: It includes a box, two power-on modules and a current protector. Each power-on module is electrically connected to the corresponding battery stack. The power-on modules are arranged vertically, and the two power-on modules are arranged side by side in the box. The current protector is connected between the two power-on modules, so that the two power-on modules and the current protector form a "J"-shaped structure.

2. The flow battery distribution box according to claim 1, characterized in that: The power supply module is provided with a bending portion, and the current protector is connected to the bending portions of the two power supply modules.

3. The flow battery distribution box according to claim 1, characterized in that: The power-on module includes a conductive unit 1 and a conductive unit 2 connected in sequence; the current protector is connected between the two conductive units 1 of the two power-on modules; and the two conductive units 2 are electrically connected to corresponding battery stacks respectively.

4. The flow battery distribution box according to claim 3, characterized in that: The power supply module is connected to an on-off switch.

5. The flow battery distribution box according to claim 4, characterized in that: The on-off switch is arranged between the first conductive unit and the second conductive unit and is connected to the box.

6. The flow battery distribution box according to any one of claims 1 to 5, characterized in that: The box body is provided with a wire-threading plate with insulating properties, and the wire-threading plate is provided with perforations.

7. The flow battery distribution box according to claim 6, characterized in that: The threading plate is provided with waist-shaped screw holes corresponding to the box body.

8. The flow battery distribution box according to any one of claims 1 to 5, characterized in that: A current sensor is installed in the box, and the current sensor is connected to the power supply module.

9. The flow battery distribution box according to any one of claims 1 to 5, characterized in that: Terminals are installed in the box.

10. The flow battery distribution box according to any one of claims 1 to 5, characterized in that: A wiring harness hole is provided on the box body.

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