CN206067533U - A kind of cabinet that confluxing of energy-storage system - Google Patents

Abstract

A confluence cabinet for an energy storage system, including a cabinet body and a plurality of single-group battery management control systems, each single-group battery management control system includes a charging and discharging relay, a battery management system, a battery pack, and a rectification unit. The discharge relay is electrically connected between the battery management system and the battery pack, the rectification unit is electrically connected to the battery pack, and each single battery management control system is connected in parallel; the rectification unit includes a heat dissipation structure And a rectifier device arranged on the heat dissipation structure, the heat dissipation structure includes at least one pillar, an upper metal sheet, a lower metal sheet and a horizontal metal sheet extending from the pillar to both sides, and the upper metal sheet and the lower metal sheet are respectively arranged on The top end and the bottom end of the pillar, and the horizontal metal sheet are arranged on both sides of the pillar in parallel with respect to each other.

Description

A combiner cabinet for an energy storage system

【Technical field】

The utility model relates to the field of electric vehicles, in particular to a confluence cabinet of an energy storage system.

【Background technique】

Energy storage technology is widely used in many fields such as information technology industry, energy conservation and environmental protection industry, and biological industry in the "12th Five-Year Plan for the Development of Emerging Industries". With the increasingly serious energy and environmental problems, the country's strong support for new energy, and the maturity of key technologies for power batteries, electric vehicles have been widely used in daily life. In the field of new energy batteries, one of the key technologies for the development of new energy vehicles is the control cabinet of the energy storage system. At present, in the design of mobile energy storage or large-scale energy storage power stations, multiple groups of batteries need to be connected in series and parallel. Each group of batteries has a single control system. In the general design, the control system is installed separately or in a decentralized manner. The cost of materials is too high, which will increase the production cost and reduce the production efficiency, which is not conducive to the popularization and application of electric vehicles in daily life. .

In view of the above, it is necessary to provide a combiner cabinet for an energy storage system that can reduce the cost of the combiner circuit.

【Content of utility model】

The purpose of the utility model is to provide a confluence cabinet of an energy storage system capable of reducing the cost of a confluence circuit.

In order to achieve the above purpose, the utility model provides a confluence cabinet for an energy storage system, which includes a cabinet body and a plurality of single-group battery management control systems, and each single-group battery management control system includes a charging and discharging relay, a battery management system , a battery pack and a rectification unit, the charging and discharging relay is electrically connected between the battery management system and the battery pack, the rectification unit is electrically connected to the battery pack, and each single battery pack management control system connected in parallel; the rectifier unit includes a heat dissipation structure and a rectifier device arranged on the heat dissipation structure, the heat dissipation structure includes at least one pillar, an upper metal sheet, a lower metal sheet, and a horizontal metal sheet extending from the pillar to both sides, the The upper metal sheet and the lower metal sheet are arranged on the top and bottom of the pillar respectively, and the horizontal metal sheets are arranged on both sides of the pillar in parallel with respect to each other.

In a preferred embodiment, the heat dissipation structure includes two pillars, an upper metal sheet, a lower metal sheet, and a horizontal metal sheet extending from the pillars to both sides, the two pillars are arranged side by side at intervals, and the upper metal sheet and the lower metal sheet are arranged on the top and bottom ends of the two pillars respectively, the horizontal metal sheets are arranged on both sides of the pillar in parallel with respect to each other, and the width of the horizontal metal sheet between the two pillars is larger than The horizontal metal sheet on the outside of the two pillars.

In a preferred embodiment, the thickness of the upper metal sheet is greater than the thickness of the lower metal sheet and the horizontal metal sheet.

In a preferred embodiment, the upper metal sheet and the lower metal sheet are respectively provided with screw holes and installation openings, the rectifier is fixed on the upper metal sheet of the heat dissipation structure through the screw holes, and the heat dissipation structure is fixed on the upper metal sheet through the installation openings. On the cabinet,

In a preferred embodiment, the cabinet is in a rectangular three-dimensional shape, and the top of the cabinet is provided with a communication port, a positive power port, and a negative power port, and the communication port, the positive power port, and the negative power port are used for Connect the external communication loop and the external power loop.

In a preferred embodiment, the cabinet body further includes a cover plate that can be rotatably connected to the cabinet body, the cover plate is provided with a plurality of battery management system installation ports, and the battery management system is arranged on the battery management system Installed in the mouth.

In a preferred embodiment, a plurality of PCB boards are installed on the cover plate, and the PCB boards are electrically connected between the charging and discharging relay and the battery management system.

In a preferred embodiment, each battery pack management control system further includes a safety unit, and the safety unit protects the circuit from overcurrent.

In a preferred embodiment, the number of the plurality of single battery management control systems is eight.

Compared with the prior art, the confluence cabinet of the energy storage system provided by the utility model can not only realize multiple confluence and multiple control circuits, but also reduce the installation space and cost.

【Description of drawings】

Fig. 1 is a schematic diagram of an energy storage combiner cabinet provided by the present invention.

FIG. 2 is a combined installation diagram of the heat dissipation structure shown in FIG. 1 .

FIG. 3 is a cross-sectional view of the heat dissipation structure shown in FIG. 2 .

FIG. 4 is a cross-sectional view of another embodiment of the heat dissipation structure shown in FIG. 3 .

【detailed description】

In order to make the purpose, technical solution and beneficial technical effects of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the utility model, not for limiting the utility model.

Please refer to FIG. 1 , the utility model provides a combiner cabinet 100 for an energy storage system, which includes a cabinet body 10 and a plurality of single-group battery management control systems 20 . Each single battery management control system 20 includes a charging and discharging relay 21 , a battery management system 22 , a safety unit (not shown in the figure), a battery pack (not shown in the figure) and a rectification unit 23 . The charging and discharging relay 21 is electrically connected between the battery management system 22 and the battery pack (not shown), the rectifier unit 23 is electrically connected to the battery pack (not shown), and each The single battery management control systems 20 are connected in parallel. In this embodiment, the number of the multiple battery management control systems 20 is eight.

The cabinet 10 is in the shape of a cuboid, and the top of the cabinet 10 is provided with a communication port 11 , a positive power port 12 and a negative power port 13 . The communication port 11, the positive port 12 of the power supply, and the negative port 13 of the power supply are respectively used to connect the external communication circuit and the external power circuit.

The cabinet body 10 also includes a cover plate 14 that can be rotatably connected to the cabinet body 10, the cover plate 14 is provided with an installation port 141 corresponding to the battery management system, and the battery management system 22 is installed on the battery Install in port 141. In this embodiment, the number of the installation openings 141 is eight.

A plurality of PCB boards 142 are also installed on the cover plate 14 , and the PCB boards 142 are electrically connected between the charging and discharging relay 21 and the battery management system 22 .

The charge-discharge relay 21 functions to power off and power on the circuit, and the battery management system 22 is used to monitor, evaluate and protect the operating state of the battery. The insurance unit acts as overcurrent protection for the circuit.

Please refer to FIG. 1 and FIG. 3 , the rectification unit 23 implements an AC/DC or DC/AC current conversion system. In Embodiment 1, the rectification unit 23 includes a heat dissipation structure 231 and a rectification device 232 disposed on the heat dissipation structure 231 , and the heat dissipation structure 231 is fixedly connected to the rectification device 232 . The heat dissipation structure 231 is integrally formed by metal materials. The heat dissipation structure 231 includes a pillar 233 , an upper metal sheet 234 , a lower metal sheet 235 , and horizontal metal sheets 236 extending from the pillar 233 to two sides. The upper metal sheet 234 and the lower metal sheet 235 are respectively disposed on top and bottom ends of the pillar 233 . The horizontal metal sheets 236 are disposed parallel to the two sides of the pillar 233 at intervals, and the thickness of the upper metal sheet 234 is greater than that of the lower metal sheet 235 and the horizontal metal sheet 236 . In this way, the upper metal sheet 234 can support the weight of the rectifying device 232 . In this embodiment, the upper metal sheet 234 and the lower metal sheet 235 are respectively provided with screw holes and installation openings, and the screw holes and installation openings are respectively used to fix the rectifying device 232 to the upper metal of the heat dissipation structure 231. on the sheet 234 , and fix the heat dissipation structure 231 on the cabinet body 10 .

Please refer to FIG. 2 and FIG. 4 , in Embodiment 2, the rectification unit 23 includes a heat dissipation structure 231 and a rectification device 232 disposed on the heat dissipation structure 231 , and the heat dissipation structure 231 is fixedly connected to the rectification device 232 . The heat dissipation structure 231 is integrally formed by metal materials. The heat dissipation structure 231 includes two pillars 233, an upper metal sheet 234, a lower metal sheet 235, and a horizontal metal sheet 236 extending from the pillars 233 to both sides. The two pillars 233 are arranged side by side at intervals, and the upper metal sheet 234 and the lower metal sheet 235 are respectively disposed on the top and bottom of the two pillars 233 . The horizontal metal sheet 236 is arranged in parallel on both sides of the two pillars 233 at intervals, and the width of the horizontal metal sheet 236 between the two pillars 233 is larger than that of the horizontal metal sheet 236 on the outside of the two pillars 233 . In addition, the thickness of the upper metal sheet 234 is greater than the thickness of the lower metal sheet 235 and the horizontal metal sheet 236 . In this way, the upper metal sheet 234 can support the weight of the rectifying device 232 . In this embodiment, the upper metal sheet 234 and the lower metal sheet 235 are respectively provided with screw holes and installation openings, and the screw holes and installation openings are respectively used to fix the rectifier device 232 on the upper metal sheet 234, And fix the heat dissipation structure 231 on the cabinet body 10 . In this way, the installation method of installing two rectifier devices 232 on one heat dissipation structure 231 can be realized. Not only can the heat dissipation structures 231 be shared without changing the volume, but also the number of required heat dissipation structures 231 is reduced, which reduces the cost and reduces the cost. space for installation.

The above-mentioned embodiments are only descriptions of preferred implementations of the present utility model, and are not intended to limit the scope of the present utility model. Various modifications and improvements made should fall within the scope of protection determined by the claims of the present utility model.

Claims (9)

1. A confluence cabinet for an energy storage system, characterized in that it includes a cabinet body and a plurality of single-group battery management and control systems, and each single-group battery management and control system includes a charging and discharging relay, a battery management system, a battery pack and A rectification unit, the charging and discharging relay is electrically connected between the battery management system and the battery pack, the rectification unit is electrically connected to the battery pack, and each single battery management control system is connected in parallel; The rectification unit includes a heat dissipation structure and a rectification device arranged on the heat dissipation structure. The heat dissipation structure includes at least one pillar, an upper metal sheet, a lower metal sheet, and a horizontal metal sheet extending from the pillar to both sides. The upper metal sheet and the The lower metal sheets are respectively arranged on the top and bottom ends of the pillars, and the horizontal metal sheets are arranged on both sides of the pillars in parallel with respect to each other. 2. The junction cabinet according to claim 1, wherein the heat dissipation structure comprises two pillars, an upper metal sheet, a lower metal sheet, and a horizontal metal sheet extending from the pillars to both sides, and the two pillars are juxtaposed The upper and lower metal sheets are arranged at intervals, and the upper and lower metal sheets are respectively arranged at the top and bottom ends of the two pillars, and the horizontal metal sheets are arranged in parallel on both sides of the pillar at intervals, and the two pillars The width of the horizontal metal sheet between them is larger than the horizontal metal sheet outside the two pillars. 3. The confluence cabinet according to claim 1, characterized in that: the thickness of the upper metal sheet is greater than the thickness of the lower metal sheet and the horizontal metal sheet. 4. The confluence cabinet according to claim 1, characterized in that: the upper metal sheet and the lower metal sheet are respectively provided with screw holes and installation openings, and the rectifier is fixed on the upper metal sheet of the heat dissipation structure through the screw holes, The heat dissipation structure is fixed on the cabinet through the installation opening. 5. The confluence cabinet according to claim 1, characterized in that: the cabinet body is in a rectangular three-dimensional shape, and the top of the cabinet body is provided with a communication port, a power supply positive port, and a power supply negative port, and the communication port, power supply The positive port and the negative port of the power supply are respectively used to connect the external communication circuit and the external power circuit. 6. The confluence cabinet according to claim 1, wherein the cabinet body further includes a cover plate that can be rotatably connected to the cabinet body, the cover plate is provided with a plurality of battery management system installation ports, and the battery The management system is arranged in the installation port of the battery management system. 7 . The combiner cabinet according to claim 6 , wherein a plurality of PCB boards are installed on the cover plate, and the PCB boards are electrically connected between the charging and discharging relay and the battery management system. 8 . The combiner cabinet according to claim 1 , wherein the management and control system of each battery pack further includes a safety unit, and the safety unit protects the circuit from overcurrent. 9 . The combiner cabinet according to claim 1 , wherein the number of the plurality of single-group battery management and control systems is eight.