Control device and energy storage system

Abstract

The utility model provides a control device and an energy storage system, and belongs to the technical field of energy storage, and the control device comprises a cabinet body, a control assembly and a function module. Wherein the cabinet body is internally provided with a cavity, the control assembly is located in the cavity, the functional module comprises at least one of a convergence assembly and a power distribution assembly, the functional module is arranged in the cavity, the convergence assembly is used for converging current of the battery cluster, and the power distribution assembly is used for supplying power to components in the cabinet body. The control assembly and the function module are integrated in the cavity of the cabinet body, so that additional connection and wiring are reduced, the integration level and compactness of the whole system are improved, the cost is lower, and the volume utilization rate is higher.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of energy storage, in particular to a control device and an energy storage system. BACKGROUND

[0002] With the continuous development of power systems, the control device can meet the requirements of power supply reliability, safety and response speed.

[0003] However, the various modules in the conventional energy storage product are arranged in a scattered manner, resulting in long connection wire harnesses between different modules and low volume utilization. CONTENT OF THE UTILITY MODEL

[0004] The embodiment of the present application provides a control device and an energy storage system, reduces additional connections and wiring, improves the integration and compactness of the entire system, and solves the problems of long connection wire harnesses and low volume utilization in the switchgear due to the scattered arrangement of various modules.

[0005] The embodiment of the present application provides the following technical solutions to solve the above technical problems:

[0006] The embodiment of the present application provides a control device, comprising:

[0007] A cabinet body, the cabinet body has a cavity inside;

[0008] A control assembly, the control assembly is located in the cavity;

[0009] A function module, the function module comprises at least one of a bus assembly and a power distribution assembly, the function module is arranged in the cavity, the bus assembly is used for collecting the current of a battery cluster, and the power distribution assembly is used for supplying power to components in the cabinet body.

[0010] The control device provided by the embodiment of the present application comprises a cabinet body, a control assembly and a function module. The cabinet body has a cavity inside, the control assembly is located in the cavity, the control assembly is used for energy control of a battery cluster, the function module comprises at least one of a bus assembly and a power distribution assembly, the function module is arranged in the cavity, the bus assembly is used for collecting the current of a battery cluster, and the power distribution assembly is used for supplying power to components in the cabinet body. The plurality of control assemblies and the function module are located in the cavity, which reduces additional connections and wiring, improves the integration and compactness of the entire system, is lower in cost, and is higher in volume utilization.

[0011] In a possible implementation, the control assembly comprises a BMS assembly, the functional module comprises a busbar assembly and a power distribution assembly, and the busbar assembly, the power distribution assembly and the BMS assembly are located in the cavity. In this way, the power distribution, busbar and BMS modules are integrated in the power distribution cabinet, the three modules share one cabinet body, the distance between the modules is short, the connection between the modules is more convenient, the harness used is shorter, and the cost is lower.

[0012] In a possible implementation, the cavity comprises a first cavity and a second cavity arranged along a first direction; the power distribution assembly is integrated in the first cavity; the busbar assembly and the plurality of BMS assemblies are integrated in the second cavity, the busbar assembly and the BMS assemblies are arranged at intervals along a second direction, and the busbar assembly is connected to the BMS assemblies. In this way, the busbar assembly, the power distribution assembly and the BMS assemblies are integrated in the same cabinet body, the floor area is reduced, the space utilization is optimized, the stability and reliability of the entire system are improved, and the maintenance and repair work is more convenient and fast.

[0013] In a possible implementation, the control device further comprises a heat dissipation structure arranged at the top end of the cabinet body, and the heat dissipation structure is used for dissipating heat for the cavity inside the cabinet body. In this way, the components in the cabinet body can be dissipated in time through the heat dissipation structure, the operation at an appropriate temperature is ensured, and thus the stability and reliability of the system are improved.

[0014] In a possible implementation, the heat dissipation structure comprises a heat sink, a first air duct and a second air duct, the heat sink is fixed at the top end of the cabinet body, the first air duct and the second air duct are not communicated, the first air duct has an air supply port and an air return port, one of the air supply port and the air return port is communicated with the first cavity of the cabinet body, the other of the air supply port and the air return port is communicated with the second cavity of the cabinet body, and the first cavity and the second cavity are communicated through a first air port, so that the first air duct, the first cavity and the second cavity form a cooling air duct.

[0015] In a possible implementation, the second air duct comprises an air inlet and an air outlet, the air inlet and the air outlet are arranged on the heat sink, and the second air duct is used for heat exchange of the heat recovered by the first air duct. In this way, the first air duct is heat exchanged through the second air duct, so that internal circulation air cooling is realized, and damage of corrosive gas to devices in the cabinet body is avoided when the cabinet body is communicated with the outside for heat dissipation.

[0016] In a possible implementation, an air inlet is arranged on the inner wall of the first cavity and communicated with the air supply port, and an air outlet is arranged on the inner wall of the second cavity and communicated with the air return port.

[0017] In a possible implementation, the functional modules further include a fire-fighting assembly, and the fire-fighting assembly, the bus assembly, the power distribution assembly, and the BMS assembly are located in the cavity. In this way, the power distribution cabinet is integrated with four modules of power distribution, fire-fighting, bus, and BMS. The four modules share one cabinet body, and the distance between the modules is short, so that the connection of the module wire harness is more convenient, the wire harness used is shorter, the cost is lower, and the volume utilization rate is higher.

[0018] In a possible implementation, the fire-fighting assembly and the power distribution assembly are integrated in the first cavity of the cabinet body, and part of the structure of the fire-fighting assembly and the power distribution assembly is arranged along a second direction, and part of the structure of the fire-fighting assembly and the power distribution assembly is arranged along a first direction; the bus assembly and the plurality of BMS assemblies are integrated in the second cavity of the cabinet body. In this way, as shown in Figure 2 the power distribution and the fire-fighting are integrated in the left cabinet body of the power distribution cabinet (i.e., in the first cavity), and the bus and the BMS are integrated in the right cabinet body of the power distribution cabinet (i.e., in the second cavity), so that the influence of the magnetic field generated by the high-voltage module on the line communication of the low-voltage module can be avoided, and the reliability of the energy storage system can be effectively ensured.

[0019] In a possible implementation, the power distribution assembly includes a switching power supply, a battery, and a first relay; the fire-fighting assembly includes a fire-fighting host and a fire-fighting control unit; the battery, the fire-fighting host, and the fire-fighting control unit are arranged at intervals along the second direction, and the fire-fighting host is close to the bottom end of the first cavity and away from the second cavity; the switching power supply and the first relay are arranged along the second direction and close to the second cavity.

[0020] In a possible implementation, an inner wall of the first cavity close to the switching power supply or the first relay is provided with an air inlet communicated with the air outlet; and an inner wall of the second cavity close to the top end of the BMS assembly is provided with an air outlet communicated with the air return. In this way, in an emergency, the fire-fighting host can quickly respond and control the fire-fighting control unit to start releasing fire-extinguishing gas. In addition, the device with high heat dissipation is arranged on the inner circulating air duct, and the device with low heat dissipation and large volume is arranged away from the air inlet, so as to prevent the air flow on the inner circulating air duct from being blocked and affect the heat dissipation effect.

[0021] In a possible implementation, the BMS assembly comprises a housing, a circuit breaker, a first fuse and a second relay arranged in the housing, one end of the first fuse is connected to the circuit breaker, and the other end of the first fuse is connected to the second relay; the circuit breaker is provided with a handle, and the opening or closing of the circuit is controlled through the handle. In this way, when a group of BMS assemblies fails, the opening or closing of the circuit is controlled through the handle, and the failed BMS assembly is disassembled and replaced by loosening the bolts, thereby improving the maintenance efficiency.

[0022] In a possible implementation, the BMS assembly further comprises a fan arranged on the first fuse, and the fan is used for heat dissipation of the first fuse. In this way, the fan is used for auxiliary heat dissipation, which can prevent local overheating of the BMS assembly from seriously affecting the normal operation of the device.

[0023] In a possible implementation, the housing is provided with a second air inlet and a third air inlet at two ends in a second direction, the second air inlet is directed to a top end of the second cavity and opposite to an air outlet arranged at the top end of the second cavity, and the third air inlet is directed to the bus assembly. The first cavity and the second cavity are further provided with a first air inlet, the first cavity and the second cavity are connected through the first air inlet, and the first air inlet is directed to the bus assembly.

[0024] In a possible implementation, the bus assembly comprises an output row and a bus row, one end of the output row is connected to the bus row, and the other end of the output row is connected to the third air inlet directed to the bus assembly BMS assembly. The current of the battery cluster is collected together by the bus row, which facilitates unified output or subsequent processing, effectively reduces the cost, and saves the space in the second cavity.

[0025] In a possible implementation, the bus assembly further comprises a second fuse and a wire harness, one end of the second fuse is connected to the bus row, and the other end of the second fuse is connected to the wire harness, and the second fuse is used for cutting off the circuit when the current is abnormal. In this way, when the circuit appears abnormal conditions such as overcurrent or short circuit, the circuit is quickly fused and cut off to prevent the system from being damaged or causing a fire, etc.

[0026] In a possible implementation, the cabinet body further comprises a cabinet door and a partition plate, the cabinet door forms a cavity with the cabinet body; the cavity is divided into a first cavity and a second cavity by the partition plate; the partition plate is provided with a first air port for connecting the first cavity and the second cavity, and the first air port is arranged on a side facing the current collection assembly; the cabinet door comprises a first cabinet door and a second cabinet door, the first cabinet door corresponds to the first cavity, and the second cabinet door corresponds to the second cavity. In this way, different devices in the same cavity can be maintained or replaced by opening different cabinet doors, which facilitates daily maintenance and fault maintenance.

[0027] The embodiment of the present application further provides a control device.

[0028] The control device is arranged at an end of the energy storage system cabinet; the energy storage system cabinet is provided with a battery cluster, and the battery cluster is connected with the control assembly of the control device.

[0029] In a possible implementation, the energy storage system cabinet is multiple, and the control device is arranged at one end of each energy storage system cabinet; the cabinet bodies of the control devices of adjacent two energy storage system cabinets are arranged back to back along the length direction of the energy storage system cabinet; and the cabinet bodies of the control devices of adjacent two energy storage system cabinets are arranged shoulder to shoulder along the width direction of the energy storage system cabinet. In this way, the maintenance operation space between the energy storage system cabinets can be reduced, and the space utilization rate of the station is improved. In the limited space, more energy storage systems can be installed, the capacity of the station is improved, and the land cost is reduced.

[0030] In a possible implementation, the control device further comprises a PCS assembly, the PCS assembly is connected with the current collection assembly of the control device through a wire harness, the PCS assembly converts the direct current output by the current collection assembly into alternating current; or the PCS assembly is connected with each control assembly of the control device, so that the control device outputs alternating current.

[0031] In a possible implementation, one end of the energy storage system cabinet is provided with a corner column, and the corner column encloses a space for accommodating the control device.

[0032] In addition to the technical problems solved by the present application, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features as described above, other technical problems solved by the control device and the energy storage system provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application or the prior art. Obviously, the drawings in the following description are only a part of the embodiments of the present application, and these drawings and the text description are not intended to limit the scope of the present application in any way, but are intended to explain the present application to those skilled in the art by reference to the specific embodiments. Other drawings can also be obtained by those skilled in the art without creative effort.

[0034] Figure 1 The structural schematic diagram of the control device provided by the embodiments of the present application is shown in the figure.

[0035] Figure 2 The internal structural schematic diagram of the control device provided by the embodiments of the present application is shown in the figure.

[0036] Figure 3 The structural schematic diagram of the cabinet of the control device provided by the embodiments of the present application is shown in the figure.

[0037] Figure 4 The structural schematic diagram of the BMS assembly of the control device provided by the embodiments of the present application is shown in the figure.

[0038] Figure 5 The schematic diagram of the heat dissipation air duct of the control device provided by the embodiments of the present application is shown in the figure.

[0039] Figure 6 The assembly schematic diagram of the control device in the energy storage system cabinet provided by the embodiments of the present application is shown in the figure.

[0040] Figure 7 The installation schematic diagram of multiple energy storage system cabinets provided by the embodiments of the present application is shown in the figure.

[0041] Explanation of reference signs:

[0042] 10, control device; 20, energy storage system cabinet;

[0043] 100, cabinet; 120, partition; 130, first cavity; 140, second cavity; 150, first cabinet door; 160, second cabinet door; 170, third cabinet door;

[0044] 101, air inlet; 102, air outlet; 103, opening;

[0045] 121, first air port;

[0046] 200, BMS assembly; 210, shell; 220, circuit breaker; 230, first fuse; 240, second relay; 250, handle; 260, fan;

[0047] 211, second air port; 212, third air port;

[0048] 300, power collection assembly; 310, power collection bar; 320, output bar; 330, second fuse; 340, wire harness;

[0049] 400, power distribution assembly; 410, switching power supply; 420, battery; 430, first relay;

[0050] 500, heat dissipation structure; 510, heat sink; 520, first air duct; 530, second air duct;

[0051] 531, air inlet; 532, air outlet;

[0052] 600, fire-fighting assembly; 610, fire-fighting host; 620, fire-fighting control unit;

[0053] 700, corner column. DETAILED DESCRIPTION

[0054] Generally, the layouts of various modules in the energy storage product are scattered, the connecting wire harnesses between different modules are long, and the volume utilization rate is low.

[0055] Therefore, the control device provided in the embodiments of the present application integrates the control assembly and the functional modules in the cavity of the cabinet body, reduces the additional connection and wiring, improves the integration and compactness of the entire system, is lower in cost, and is higher in volume utilization rate. The first air duct and the second air duct which are not connected are arranged to timely dissipate heat in the cabinet body, meet the requirement of sealing arrangement for improving the protection grade of the cabinet body, and adapt to normal working operation under various severe conditions.

[0056] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0057] Figure 1 A structural schematic diagram of the control device provided in the embodiments of the present application is shown in FIG. 1, Figure 2 An internal structural schematic diagram of the control device provided in the embodiments of the present application is shown in FIG. 2, Figure 3 A structural schematic diagram of the cabinet body of the control device provided in the embodiments of the present application is shown in FIG. 3, Figure 4 A structural schematic diagram of the BMS assembly of the control device provided in the embodiments of the present application is shown in FIG. 4, Figure 5 A schematic diagram of the running direction of the heat dissipation air duct of the control device provided in the embodiments of the present application is shown in FIG. 5, Figure 6 A schematic diagram of the assembly of the control device provided in the embodiments of the present application in the energy storage system cabinet is shown in FIG. 6.Figure 7 The installation schematic diagram of the plurality of energy storage system cabinets provided in the embodiment of the present application.

[0058] The control device provided in the embodiment of the present application can include a cabinet 100, a control assembly and a function module. The cabinet 100 has a cavity inside. The control assembly is located in the cavity, and the control assembly is used for energy control of the battery cluster 420. The function module includes at least one of a busbar assembly 300 and a power distribution assembly 400. The function module is arranged in the cavity. The busbar assembly 300 is used for collecting the current of the battery cluster. The power distribution assembly 400 is used for power supply of components in the cabinet 100. At least one of the busbar assembly 300 and the power distribution assembly 400 is integrated with the plurality of control assemblies in the cabinet 100. The busbar assembly 300 is used for collecting and outputting the current of the battery cluster 420. The power distribution assembly 400 is used for being connected with the commercial power and for power supply of components in the cabinet 100.

[0059] As shown in the example, Figure 2 In the embodiment of the present application, the control device includes the cabinet 100. The inside of the cabinet 100 has a cavity for accommodating the control assembly and the function module. The control assembly can be a BMS assembly 200, and the control assembly can also be other controllers such as a fire control. The BMS assembly 200 (Battery Management System) is the core part of the control device, which is responsible for monitoring and controlling the energy state of the battery cluster. The plurality of BMS assemblies 200 are located in the cabinet 100, which can manage the energy of the plurality of battery clusters and ensure the safe and efficient operation of the battery 420. In the embodiment of the present application, as shown in Figure 2 The number of the BMS assemblies 200 is four, and it should be noted that the number of the BMS assemblies 200 can be four but is not limited to four, and can be any number, for example, five or six or seven, etc. Each BMS assembly 200 can be connected with one battery cluster (not shown in the figure) or connected with a plurality of battery clusters.

[0060] Please continue to refer to Figure 2The cabinet body 100 can also be used to accommodate functional modules, which can include at least one of the current collection assembly 300 and the power distribution assembly 400. For example, the functional modules can include the current collection assembly 300, or the functional modules can include the power distribution assembly 400, or the functional modules can include both the current collection assembly 300 and the power distribution assembly 400. In this way, the BMS assembly 200 and the current collection assembly 300 are integrated in the cabinet body 100, or the BMS assembly 200 and the power distribution assembly 400 are integrated in the cabinet body 100, or the current collection assembly 300, the power distribution assembly 400, and the BMS assembly 200 are integrated as one, improving the integration and operation efficiency of the overall system. The current collection assembly 300 can be responsible for collecting the current of the battery cluster 420 and outputting it outside the cabinet body 100, and the current collection assembly 300 can also collect the current and then disperse the current to each battery. The current collection assembly 300 can ensure stable output of the current. The power distribution assembly 400 is connected to the mains to provide power supply for the components in the cabinet body 100, and the power distribution assembly 400 can ensure that the control device can still work normally to provide stable power support when the mains power supply is insufficient or interrupted.

[0061] As shown in Figure 2 In the embodiments of the present application, the functional modules can include the current collection assembly 300 and the power distribution assembly 400, and the current collection assembly 300, the power distribution assembly 400, and the plurality of BMS assemblies 200 are located in the cavity. It can be understood that integrating the current collection assembly 300, the power distribution assembly 400, and the plurality of BMS assemblies 200 into the same cabinet body 100 reduces the use of cables, connectors, and other components, reduces costs, reduces floor space, optimizes space utilization, improves the stability and reliability of the entire system, and makes maintenance and repair work more convenient and efficient.

[0062] In the embodiments of the present application, for the convenience of description, the length direction of the power distribution cabinet is defined as the X direction, i.e. the first direction, and the width direction of the power distribution cabinet is the Y direction. The height direction of the power distribution cabinet is the Z direction, i.e. the second direction. It can be understood that the coordinate system of the power distribution cabinet can be flexibly set according to specific needs.

[0063] Referring to Figure 3 As shown in the figure, the cavity in the cabinet body 100 can include a first cavity 130 and a second cavity 140 arranged along the first direction (e.g. the X direction). The power distribution assembly 400 is a low-voltage device, and the current collection assembly 300 and the plurality of BMS assemblies 200 are high-voltage devices. By providing the first cavity 130 and the second cavity 140, the low-voltage power distribution assembly 400 can be integrated in the first cavity 130. The high-voltage current collection assembly 300 and the plurality of BMS assemblies 200 are integrated in the second cavity 140, realizing the arrangement of high-voltage and low-voltage devices in different cavities and avoiding mutual interference of high-voltage and low-voltage devices.

[0064] Wherein, when the bus assembly 300 and the plurality of BMS assemblies 200 are arranged in the second cavity 140, the bus assembly 300 and the plurality of BMS assemblies 200 are arranged in the second direction (for example, the Z direction) in a spaced manner, and the bus assembly 300 is connected with the BMS assemblies 200.

[0065] In a possible implementation, the low-voltage power distribution assembly 400 is integrated in the first cavity 130, and the power distribution assembly 400 is connected with the mains outside the cabinet 100 to provide power supply for the components in the cabinet 100. The high-voltage bus assembly 300 and the plurality of BMS assemblies 200 are integrated in the second cavity 140, and the bus assembly 300 and the plurality of BMS assemblies 200 are arranged in a top-down manner in the Z direction, and each BMS assembly 200 is arranged in a spaced manner along the X axis direction. It should be noted that the positional relationship of the bus assembly 300 and the plurality of BMS assemblies 200 can be adjusted according to actual working conditions.

[0066] Wherein, the heat dissipation mode in the related energy storage product is mainly air cooling, and the cabinet directly exchanges gas with the outside, so that the corrosive gas in the air can damage the electrical components and structural components in the power distribution cabinet, and cannot meet the protection requirements. Therefore, the embodiment of the present application further includes a heat dissipation structure 500, as shown in Figure 1 and Figure 2 The heat dissipation structure 500 is arranged at the top end of the cabinet 100, and the heat dissipation structure 500 is used for dissipating heat for the first cavity 130 and the second cavity 140 in the cabinet 100. For example, the heat dissipation structure 500 provided by the embodiment of the present application adopts internal circulation air cooling to ensure that the cabinet is designed in a fully sealed manner, thereby avoiding damage to the components in the cabinet caused by corrosive gas from the outside.

[0067] Wherein, the heat dissipation structure 500 and the top end of the cabinet 100 can be connected and fixed by bolts or screws or clamping, and each assembly in the cabinet 100 can be cooled in time by the heat dissipation structure 500, so as to ensure that the system operates at an appropriate temperature, thereby improving the stability and reliability of the system.

[0068] In the embodiments of the present application, specifically, the heat dissipation structure can include a heat sink 510, a first air duct 520 and a second air duct 530. The heat sink 510 is fixed at the top end of the cabinet 100, and the first air duct 520 and the second air duct 530 are not communicated. The first air duct 520 has a supply air port and a return air port, one of which is communicated with the first cavity 130 of the cabinet 100, and the other of which is communicated with the second cavity 140 of the cabinet 100. The first cavity 130 and the second cavity 140 are communicated through the first air port 121, so that the first air duct 520, the first cavity 130 and the second cavity 140 form an internal circulation cooling air duct. The second air duct 530 includes an air inlet 531 and an air outlet 532, which are arranged on the heat sink 510 and communicated with the outside. The second air duct 530 is an external circulation air duct, and is used for heat exchange of the heat recovered by the first air duct 520. In this way, the first air duct 520 is heat exchanged through the second air duct 530, thereby realizing internal circulation air cooling and avoiding damage to devices in the cabinet caused by corrosive gas when the cabinet is communicated with the outside for heat dissipation.

[0069] As shown in Figure 3 , the heat dissipation structure 500 includes a heat sink 510. It can be understood that in the embodiments of the present application, the heat sink 510 can be an air conditioner or a heat exchanger. The first cavity 130 and the second cavity 140 in the cabinet 100 can be communicated through the first air port 121, so that the air in the first cavity 130 and the second cavity 140 can flow. Figure 5 As shown in Figure 5 , the heat sink 510 has a first air duct 520 and a second air duct 530 which are not communicated. The first air duct 520 is an internal circulation air duct, and the first air duct 520 is communicated with the first cavity 130 and the second cavity 140 in the cabinet 100, so as to ensure that the heat sink 510 and the cabinet 100 form a circulating cooling path. The second air duct 530 is an external circulation air duct, and the second air duct 530 is used for heat exchange of the heat recovered by the first air duct 520.

[0070] It should be noted that the first air duct 520 and the second air duct 530 which are not communicated are used together, so that the inside of the cabinet 100 and the outside of the cabinet 100 are not communicated, thereby realizing the purpose of heat dissipation on the basis of the full-sealed design of the cabinet. The control device can meet the IP66 protection level, can adapt to normal operation under various harsh conditions, and improves environmental applicability.

[0071] It can be understood that the bottom end of the heat dissipation structure 500 is provided with an air supply port and an air return port (not shown in the figure), one of which is connected with the first cavity 130 of the cabinet 100, and the other is connected with the second cavity 140, so as to ensure that the first air duct 520 forms an internal circulation cooling path with the first cavity 130 and the second cavity 140 in the cabinet 100. For example, as shown in Figure 3 The heat exchanger is provided with an air inlet 531 and an air outlet 532 connected with the second air duct 530. The second air duct 530 forms an external circulation air duct with the external environment of the cabinet 100, and can exchange heat with the heat recovered by the first air duct 520 in the cabinet 100, so as to dissipate the heat in the first air duct 520 to the external environment of the cabinet 100.

[0072] In some embodiments of the present application, referring to Figure 3 The inner wall of the first cavity 130 is provided with an air inlet 101 connected with the air supply port, and the inner wall of the second cavity 140 is provided with an air outlet 102 connected with the air return port. Referring to Figure 3 The air inlet 101 and the air outlet 102 are located at the top end of the cabinet 100, the air inlet 101 is connected with the first cavity 130, and the air outlet 102 is connected with the second cavity 140.

[0073] It can be understood that the air inlet 101 on the inner wall of the first cavity 130 can be connected with the air supply port of the heat sink 510, and the air outlet 102 on the inner wall of the second cavity 140 can be connected with the air return port of the heat sink 510. The cold air generated by the heat sink 510 can be sent into the first cavity 130 from the air supply port, then flow into the second cavity 140 through the first air port 121 on the partition plate 120 after passing through the inside of the first cavity 130, and finally return to the first air duct 520 in the heat sink 510 from the air outlet 102, forming an internal circulation cooling path.

[0074] In some embodiments of the present application, the functional module further includes a fire-fighting assembly 600, and the fire-fighting assembly 600, the current collection assembly 300, the power distribution assembly 400 and the plurality of BMS assemblies 200 are located in the cavity. For example, as shown in Figure 2 In the embodiments of the present application, the functional module can further include a fire-fighting assembly 600, and the fire-fighting assembly 600, the current collection assembly 300, the power distribution assembly 400 and the plurality of BMS assemblies 200 are integrated in the cabinet 100. The fire-fighting assembly 600 can monitor the temperature and fire in the cabinet 100 in real time, so as to ensure that measures can be taken quickly in emergency, loss can be reduced and personnel safety can be ensured.

[0075] In some embodiments of the present application, the fire-fighting assembly 600 is a low-voltage device, and therefore, referring to Figure 2As shown, the fire-fighting assembly 600 and the power distribution assembly 400 are integrated in the first cavity 130 of the cabinet 100, and part of the structure of the fire-fighting assembly 600 and the power distribution assembly 400 is arranged along the Z direction, and part of the structure of the fire-fighting assembly 600 and the power distribution assembly 400 is arranged along the X direction. The bus assembly 300 and the plurality of BMS assemblies 200 are integrated in the second cavity 140 of the cabinet 100. In this way, the power distribution cabinet integrates the power distribution, fire-fighting, bus and BMS four modules, and referring to Figure 2 As shown, the power distribution and fire-fighting are integrated in the left cabinet of the power distribution cabinet (i.e., in the first cavity 130), and the bus and BMS are integrated in the right cabinet of the power distribution cabinet (i.e., in the second cavity 140), so that the magnetic field generated by the high-voltage module can avoid affecting the line communication of the low-voltage module, effectively ensuring the reliability of the energy storage system.

[0076] In some embodiments of the present application, referring to Figure 2 As shown, the power distribution assembly 400 includes a switching power supply 410, a battery 420 and a first relay 430. The fire-fighting assembly 600 includes a fire-fighting host 610 and a fire-fighting control unit. The battery 420, the fire-fighting host 610 and the fire-fighting control unit are arranged along the Z direction, and the fire-fighting host 610 is close to the bottom end of the first cavity 130 and away from the second cavity 140. The switching power supply 410 and the first relay 430 are arranged along the second direction and close to the second cavity 140. The inner wall of the first cavity 130 close to the switching power supply 410 or the first relay 430 is provided with an air inlet 101 communicating with an air outlet. The top end inner wall of the second cavity 140 close to the BMS assembly 200 is provided with an air outlet 102 communicating with an air return.

[0077] Please continue to refer to Figure 2 The power distribution assembly 400 is connected to the mains to supply power to the electrical devices in the cabinet 100, ensuring normal operation of the system. The power distribution assembly 400 mainly includes a switching power supply 410, a battery 420 and a first relay 430, wherein the switching power supply 410 and the battery 420 are arranged along the X axis direction, and the switching power supply 410 and the first relay 430 are arranged along the Z axis direction. The battery 420 serves as a backup power supply, and when the mains is disconnected due to failure, the battery 420 is used to ensure that the electrical devices in the cabinet 100 can work normally for a period of time.

[0078] The fire-fighting assembly 600 includes a fire-fighting host 610 and a fire-fighting control unit, and the fire-fighting host 610 and the fire-fighting control unit are arranged along the Z axis direction. It can be understood that in the embodiments of the present application, a matching sensor can also be provided in the cabinet 100 for fire alarm detection, and the fire-fighting control unit can be started to release extinguishing gas according to the temperature and smoke signals. It should be noted that the fire-fighting host 610 is close to the bottom end of the first cavity 130, which is conducive to the fire-fighting host 610 responding quickly and controlling the fire-fighting control unit in an emergency.

[0079] In combination Figure 2 And Figure 3 As shown in the embodiment of the present application, since the switching power supply 410 and the first relay 430 are high-heat devices, the switching power supply 410 and the first relay 430 are arranged in sequence on the lower side of the air inlet 101 at the top end of the cabinet 100, so that the cold air of the first air duct 520 of the heat sink 510 can pass through the high-heat devices, ensuring that the working temperature of the switching power supply 410 and the first relay 430 meets the requirements. The battery 420 and the fire-fighting assembly 600 have low heat dissipation and large volume, and are away from the air inlet 101 at the top end of the cabinet 100, so that the battery 420 and the fire-fighting assembly 600 are located on the left side of the first cavity 130 away from the air inlet 101, thereby preventing the battery 420 and the fire-fighting assembly 600 from blocking the air flow on the internal circulation air duct and affecting the heat dissipation effect.

[0080] It can be understood that the current of the bus assembly 300 and the plurality of BMS assemblies 200 is large, the heat dissipation of the electrical devices is high, the heat generation is serious, and the temperature is high. The bus assembly 300 and the plurality of BMS assemblies 200 are arranged in the second cavity 140, and the heat can be directly discharged from the cabinet 100 through the air outlet 102 at the top end of the cabinet 100, thereby avoiding affecting the normal use of other components in the cabinet 100.

[0081] In some embodiments of the present application, as shown in Figure 4 Each BMS assembly 200 includes a housing 210, a circuit breaker 220, a first fuse 230, and a second relay 240 arranged in the housing 210, and one end of the first fuse 230 is connected to the circuit breaker 220, and the other end of the first fuse 230 is connected to the second relay 240. A handle 250 is arranged on the circuit breaker 220, and the handle 250 is used to control the opening or closing of the circuit.

[0082] As shown in Figure 2 In the embodiment of the present application, four BMS assemblies 200 are arranged, each of which includes a housing 210, and the housing 210 is detachably arranged between the cabinet 100 by means of bolts. When a group of BMS assemblies 200 fails, the faulty BMS assembly 200 can be disassembled and replaced by loosening the bolts, thereby improving the maintenance efficiency. As shown in Figure 4 The housing 210 contains the circuit breaker 220, the first fuse 230, and the second relay 240. The handle 250 is arranged on the circuit breaker 220, and the user or the maintenance personnel can operate the handle 250 to control the opening or closing of the circuit, thereby improving the safety and convenience of the operation.

[0083] It should be noted that the first fuse 230 is a protection element, one end of which is connected with the circuit breaker 220, and the other end of which is connected with the second relay 240. When an abnormal situation such as overcurrent or short circuit occurs in the circuit, the first fuse 230 will quickly melt and passively cut off the circuit, thereby protecting the battery 420 system and other electronic devices from damage. The second relay 240 is connected with the first fuse 230, and when a system state abnormality or maintenance is needed, the second relay 240 can actively cut off or restore the circuit, thereby ensuring the safety and stability of the battery 420 system.

[0084] In some embodiments of the present application, each BMS assembly 200 further comprises a fan 260 arranged on the first fuse 230, and the fan 260 is used for heat dissipation of the first fuse 230. Please continue to participate Figure 4 Each first fuse 230 is provided with a fan 260 for auxiliary heat dissipation, so as to prevent local overheating of the BMS assembly 200 from seriously affecting the normal work of the device.

[0085] In some embodiments of the present application, the shell 210 is provided with a second air outlet 211 and a third air outlet 212 at two ends along the second direction, the second air outlet 211 is directed to the top end of the second cavity 140, and is opposite to the exhaust port 102 arranged at the top end of the second cavity 140. The third air outlet 212 is directed to the bus assembly 300; the first cavity 130 and the second cavity 140 are further provided with a first air outlet 121, the first cavity 130 and the second cavity 140 are communicated through the first air outlet 121, and the first air outlet 121 is directed to the bus bar 310.

[0086] As shown in the example, Figure 3 As shown in the example,

[0087] In some embodiments of the present application, the bus assembly 300 comprises an output bus 320 and a bus bar 310, one end of the output bus 320 is connected with the bus bar 310, and the other end of the output bus 320 is connected with the BMS assembly 200. As Figure 2As shown, the current collection assembly 300 includes an output row 320 and a current collection row 310, the current collection row 310 is used to collect the current of the battery cluster together, facilitating unified output or subsequent processing. One end of the output row 320 is connected with the current collection row 310, and the other end of the output row 320 is connected with the BMS assembly 200, and the circuit breaker 220, the first fuse 230 and the second relay 240 in the BMS assembly 200 are all arranged on the output row 320.

[0088] It should be noted that the output row 320 and the current collection row 310 can be copper rows or aluminum rows. The output row 320 can include a positive output row 320 and a negative output row 320, and the current collection row 310 can include a positive current collection row 310 and a negative current collection row 310, wherein the positive output row 320 is connected with the positive current collection row 310, and the negative output row 320 is connected with the negative current collection row 310, which will not be described here. It can be understood that the BMS assembly 200 and the current collection assembly 300 are integrated in the second cavity 140, which is close, and are directly connected through the output row 320 and the current collection row 310, which effectively reduces the cost and saves the space in the second cavity 140.

[0089] In some embodiments of the present application, the current collection assembly 300 further includes a second fuse 330 and a wire harness 340, one end of the second fuse 330 is connected with the current collection row 310, and the other end of the second fuse 330 is connected with the wire harness 340, and the second fuse 330 is used to cut off the circuit when the current is abnormal.

[0090] As Figure 2 described, the second fuse 330 of the current collection assembly 300 can quickly melt and cut off the circuit when the circuit appears abnormal conditions such as overcurrent or short circuit, so as to prevent the system from being damaged or causing fire, etc. One end of the second fuse 330 is connected with the current collection row 310, and the other end is connected with the wire harness 340, and the wire harness 340 is used to output current. In the embodiments of the present application, the wire harness 340 is located at the bottom end of the cabinet 100, which is conducive to wiring, and the bottom end of the cabinet 100 is provided with an opening through which the wire harness 340 passes.

[0091] In some embodiments of the present application, referring to Figure 1 and Figure 2 As shown, the cabinet 100 further includes a cabinet door and a partition 120, and the cabinet door forms a cavity with the cabinet 100. The cavity is divided into a first cavity 130 and a second cavity 140 by the partition 120. The partition 120 is provided with a first air port 121 connecting the first cavity 130 and the second cavity 140, and the first air port 121 is arranged on the side facing the current collection assembly 300. The cabinet door includes a first cabinet door 150 and a second cabinet door 160, the first cabinet door 150 corresponds to the first cavity 130, and the second cabinet door 160 corresponds to the second cavity 140.

[0092] By setting the partition plate 120, the first cavity 130 and the second cavity 140 are separated by the partition plate 120, which can avoid the influence of the magnetic field generated by the high-voltage module on the line communication of the low-voltage module, thereby ensuring the safety and reliability of the system.

[0093] It should be noted that the bottom end of the first cavity 130 can also be provided with other devices. In order to facilitate the maintenance or replacement of the devices at different positions of the first cavity 130 during maintenance, as shown in Figure 2 The first cavity 130 can be provided with a first cabinet door 150 and a third cabinet door 170, so that the first cabinet door 150 can be opened to maintain or replace the power distribution assembly 400 and the fire-fighting assembly 600 in the first cavity 130. When the third cabinet door 170 is opened, the first cabinet door 150 can be in a closed state, thereby maintaining or replacing the devices in the first cavity 130 corresponding to the third cabinet door 170, and realizing the maintenance or replacement of the devices in the same cavity through opening different cabinet doors.

[0094] As shown in Figure 1 The second cavity 140 is provided with a second cabinet door 160. The first cabinet door 150, the second cabinet door 160, and the third cabinet door 170 can be connected and fixed to the cabinet 100 through hinges and bolts, and can be opened or closed to facilitate daily maintenance and fault maintenance.

[0095] In some embodiments of the present application, an energy storage system is also provided, which comprises an energy storage system cabinet 20 and the above-mentioned control device 10, and the control device 10 is arranged at the end of the energy storage system cabinet 20. The energy storage system cabinet 20 is provided with a battery cluster 420 of batteries, and the battery cluster 420 of batteries is connected to the BMS assembly 200 of the control device 10.

[0096] As shown in Figure 6 The energy storage system cabinet 20 is provided with a battery cluster 420 of batteries (not shown in the figure), and the control device 10 is arranged on the energy storage system cabinet 20 in a wall-mounted manner. The BMS assembly 200 of the control device 10 is connected to the battery cluster 420 of batteries in the energy storage system cabinet 20. One end of the energy storage system cabinet 20 is provided with a corner column 700, which surrounds a space for accommodating the control device 10. The cabinet 100 of the control device 10 and the corner column 700 can also be connected and fixed by fasteners such as screws or bolts.

[0097] In some embodiments of the present application, as shown in Figure 7As shown, the energy storage system cabinet 20 can be multiple, and each energy storage system cabinet 20 is provided with a control device 10 at one end. Along the length direction (for example, the X direction) of the energy storage system cabinet 20, the cabinet bodies 100 of the control devices 10 on the adjacent two energy storage system cabinets 20 are arranged back to back. Along the width direction (for example, the Y direction) of the energy storage system cabinet 20, the cabinet bodies 100 of the control devices 10 on the adjacent two energy storage system cabinets 20 are arranged shoulder to shoulder.

[0098] As shown, the energy storage system cabinet 20 can be multiple, and each energy storage system cabinet 20 is provided with a control device 10 at one end. Along the length direction (for example, the X direction) of the energy storage system cabinet 20, the cabinet bodies 100 of the control devices 10 on the adjacent two energy storage system cabinets 20 are arranged back to back. Along the width direction (for example, the Y direction) of the energy storage system cabinet 20, the cabinet bodies 100 of the control devices 10 on the adjacent two energy storage system cabinets 20 are arranged shoulder to shoulder. Figure 7 As shown, the energy storage system cabinet 20 can be multiple, and each energy storage system cabinet 20 is provided with a control device 10 at one end. Along the length direction (for example, the X direction) of the energy storage system cabinet 20, the cabinet bodies 100 of the control devices 10 on the adjacent two energy storage system cabinets 20 are arranged back to back. Along the width direction (for example, the Y direction) of the energy storage system cabinet 20, the cabinet bodies 100 of the control devices 10 on the adjacent two energy storage system cabinets 20 are arranged shoulder to shoulder.

[0099] In some embodiments of the present application, the PCS component (Power Conversion System, energy storage converter) is responsible for controlling the charging and discharging process of the battery and the core component of AC / DC conversion. The PCS component is connected to the busbar assembly 300 of the control device 10 through the wire harness 340, and the PCS component converts the DC output by the busbar assembly 300 into AC. Or the PCS component is connected to each BMS component 200 of the control device 10, so that the control device 10 outputs AC.

[0100] It should be noted that the battery cluster of the energy storage system cabinet 20 outputs in the form of DC, and the DC in the control device 10 needs to be converted to AC by the PCS component before being transmitted to the power grid. In one possible implementation, an integrated PCS is used, and the PCS component can be arranged outside the cabinet body 100. The PCS component is connected to the busbar assembly 300 through the wire harness 340, and the DC of the battery cluster flows out of the cabinet body 100 after being collected by the busbar assembly 300, and is converted to AC by the PCS component.

[0101] In another possible implementation, a group string type PCS is adopted, the PCS components can be arranged in the cabinet body 100, and the busbar assembly 300 in the cabinet body 100 is replaced by the PCS components. The direct current of the battery cluster is converted into alternating current by the PCS components and then flows out of the cabinet body 100.

[0102] Wherein, the terms of "upper", "lower" and the like are used to describe the relative position relationship of various structures in the drawings, which is only for the convenience of clear description, and is not used to limit the scope of the application. The change or adjustment of the relative relationship is also regarded as the scope of the application without substantial change of the technical content.

[0103] It should be noted that: in the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact or indirectly contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0104] In addition, in the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0105] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0106] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A control device, characterized in that, include: Cabinet (100), wherein the cabinet (100) has a cavity; A control component, the control component being located within the cavity; The functional module includes at least one of a busbar assembly (300) and a power distribution assembly (400), the functional module being disposed within the cavity, the busbar assembly (300) being used to collect the current of the battery cluster, and the power distribution assembly (400) being used to supply power to the components within the cabinet (100).

2. The control device according to claim 1, characterized in that, The control component includes a BMS component (200), and the functional modules include: The busbar assembly (300) and the power distribution assembly (400) are located within the cavity.

3. The control device according to claim 2, characterized in that, The cavity includes a first cavity (130) and a second cavity (140) arranged along a first direction. The power distribution component (400) is integrated within the first cavity (130); The busbar assembly (300) and the BMS assembly (200) are integrated in the second cavity (140), and the busbar assembly (300) and the BMS assembly (200) are arranged at intervals along the second direction. The busbar assembly (300) is connected to the BMS assembly (200).

4. The control device according to claim 3, characterized in that, The control device further includes: A heat dissipation structure (500) is provided at the top of the cabinet (100) and is used to dissipate heat from the cavity inside the cabinet (100).

5. The control device according to claim 4, characterized in that, The inner wall of the first cavity (130) is provided with an air inlet (101), and the inner wall of the second cavity (140) is provided with an air outlet (102).

6. The control device according to claim 5, characterized in that, The heat dissipation structure (500) includes: The radiator (510), the first air duct (520), and the second air duct (530) are provided. The radiator (510) is fixed to the top of the cabinet (100), and the first air duct (520) and the second air duct (530) are not connected. The first air duct (520) has an air supply port and an air return port. One of the air supply port and the air return port is connected to the air inlet (101) of the first cavity (130), and the other of the air supply port and the air return port is connected to the air outlet (102) of the second cavity (140). The first cavity (130) and the second cavity (140) are connected by a first air outlet (121) so that the first air duct (520), the first cavity (130) and the second cavity (140) form a cooling air duct.

7. The control device according to claim 6, characterized in that, The second air duct (530) includes an air inlet (531) and an air outlet (532), the air inlet (531) and the air outlet (532) are disposed on the radiator (510), and the second air duct (530) is used to exchange the heat recovered by the first air duct (520).

8. The control device according to claim 7, characterized in that, The functional module further includes a fire protection component (600), wherein the fire protection component (600), the busbar component (300), the power distribution component (400), and the BMS component (200) are all located within the cavity.

9. The control device according to claim 8, characterized in that, The fire protection component (600) and the power distribution component (400) are integrated in the first cavity (130) of the cabinet (100), and a portion of the structure of the fire protection component (600) and the power distribution component (400) are arranged along a second direction, while a portion of the structure of the fire protection component (600) and the power distribution component (400) are arranged along a first direction.

10. The control device according to claim 9, characterized in that, The power distribution assembly (400) includes a switching power supply (410), a battery (420), and a first relay (430), and the fire protection assembly (600) includes a fire control panel (610) and a fire control unit (620). The battery (420), the fire control panel (610) and the fire control unit (620) are arranged at intervals along the second direction, and the fire control panel (610) is close to the bottom of the first cavity (130) and far away from the second cavity (140). The switching power supply (410) and the first relay (430) are arranged along the second direction and close to the second cavity (140).

11. The control device according to claim 10, characterized in that, An air inlet (101) communicating with the air outlet is provided on the inner wall of the first cavity (130) near the switching power supply (410) or the first relay (430). The second cavity (140) has an exhaust port (102) on the inner wall of the top end near the BMS component (200) that communicates with the return air port.

12. The control device according to any one of claims 6-10, characterized in that, The BMS component (200) includes: The housing (210) and the circuit breaker (220), the first fuse (230) and the second relay (240) disposed in the housing (210), wherein one end of the first fuse (230) is connected to the circuit breaker (220) and the other end of the first fuse (230) is connected to the second relay (240); The circuit breaker (220) is provided with a handle (250), through which the circuit is controlled to open or close.

13. The control device according to claim 12, characterized in that, The BMS component (200) also includes: A fan (260) is disposed on the first fuse (230) and the fan (260) is used to dissipate heat from the first fuse (230).

14. The control device according to claim 12, characterized in that, The housing (210) is provided with a second air vent (211) and a third air vent (212) at both ends along the second direction. The second air vent (211) faces the top of the second cavity (140) and is opposite to the exhaust vent (102) provided at the top of the second cavity (140). The third air outlet (212) faces the confluence assembly (300); A first air vent (121) is provided between the first cavity (130) and the second cavity (140). The first cavity (130) and the second cavity (140) are connected through the first air vent (121), and the first air vent (121) faces the confluence assembly (300).

15. The control device according to any one of claims 6-10, characterized in that, The bus assembly (300) includes an output bus (320) and a bus (310), one end of the output bus (320) is connected to the bus (310), and the other end of the output bus (320) is connected to the BMS assembly (200).

16. The control device according to claim 15, characterized in that, The bus assembly (300) also includes: A second fuse (330) and a wiring harness (340), one end of the second fuse (330) being connected to the busbar (310) and the other end of the second fuse (330) being connected to the wiring harness (340), the second fuse (330) being used to cut off the circuit in case of abnormal current.

17. The control device according to any one of claims 6-10, characterized in that, The cabinet (100) also includes a cabinet door and a partition (120), wherein the cabinet door and the cabinet (100) form a cavity; The cavity is divided into a first cavity (130) and a second cavity (140) by the partition (120). The partition (120) is provided with a first air vent (121) that connects the first cavity (130) and the second cavity (140), and the first air vent (121) is located on the side facing the confluence assembly (300); The cabinet doors include a first cabinet door (150) and a second cabinet door (160), the first cabinet door (150) corresponds to the first cavity (130), and the second cabinet door (160) corresponds to the second cavity (140).

18. An energy storage system, characterized in that, The energy storage system includes: The energy storage system cabinet and the control device according to any one of claims 1-17, wherein the control device is disposed at the end of the energy storage system cabinet; The energy storage system cabinet contains a battery cluster, which is connected to the control components of the control device.

19. The energy storage system according to claim 18, characterized in that, The energy storage system cabinets are multiple, and each energy storage system cabinet is equipped with the control device at one end; Along the length of the energy storage system cabinet, the cabinets (100) of the control devices on two adjacent energy storage system cabinets are arranged back to back; Along the width direction of the energy storage system cabinet, the cabinets (100) of the control devices on two adjacent energy storage system cabinets are arranged side by side.

20. The energy storage system according to claim 18, characterized in that, It also includes a PCS component, which is connected to the busbar component (300) of the control device via a wiring harness (340), and the PCS component converts the DC power output by the busbar component (300) into AC power; Alternatively, the PCS component may be connected to each control component of the control device so that the control device outputs alternating current.

21. The energy storage system according to claim 18, characterized in that, An angle post (700) is provided at one end of the energy storage system cabinet, and the angle post (700) encloses a space for accommodating the control device.

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