Combiner box and energy storage device

Abstract

The present application provides a combiner box, comprising a box body, and a power distribution unit, a control unit, and a combiner unit which are arranged in the box body. An opening is formed in the box body and the box body is provided with a first accommodating space, a second accommodating space, and a third accommodating space which are sequentially arranged from top to bottom in the vertical direction; the power distribution unit is arranged in the first accommodating space; the opening is separately communicated with the first accommodating space, the second accommodating space, and the third accommodating space; the control unit is arranged in the second accommodating space; the combiner unit is arranged in the third accommodating space.

Description

Combiner cabinet and energy storage device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 29, 2023, with application number 2023236665407. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of energy storage technology, and in particular to a combiner cabinet and an energy storage device. Background Art

[0003] A combiner cabinet is used to distribute electrical energy and is equipped with a variety of control devices, which mainly constitute the combiner circuit, control circuit, and distribution circuit in the combiner cabinet. In related technologies, the control devices are usually integrated into a cabinet. Technical issues

[0004] Control components, especially communication components and power supply components, are integrated into a junction box, resulting in poor reliability of power supply and communication. At the same time, it is difficult for staff to repair various functional circuits. For example, it is difficult to operate when a certain component needs to be replaced, making the junction box difficult to maintain. Technical Solutions

[0005] In the first aspect, the present application provides a junction cabinet, comprising a cabinet body, and a distribution unit, a control unit and a junction unit arranged in the cabinet body; the cabinet body is formed with an opening and a first accommodating space, a second accommodating space and a third accommodating space arranged in sequence from top to bottom in the vertical direction, the opening is respectively connected to the first accommodating space, the second accommodating space and the third accommodating space, the distribution unit is arranged in the first accommodating space, the control unit is arranged in the second accommodating space, and the junction unit is arranged in the third accommodating space.

[0006] In a second aspect, the present application provides an energy storage device, comprising a plurality of battery clusters and a junction box provided by the present application, wherein the plurality of battery clusters are electrically connected to the junction unit respectively. Beneficial effects

[0007] The beneficial effects of the junction cabinet and energy storage device provided in the present application are as follows: the junction cabinet includes a cabinet body and a distribution unit, a control unit and a junction unit arranged in the cabinet body; a first accommodating space, a second accommodating space and a third accommodating space are formed in the cabinet body and arranged in sequence from top to bottom in the vertical direction, the distribution unit is arranged in the first accommodating space, the control unit is arranged in the second accommodating space, and the junction unit is arranged in the third accommodating space; the space layout in the junction cabinet of the present application is clear, and each functional unit is allocated to a different accommodating space. The functional units will not interfere with each other and have high reliability. In addition, the distribution unit is arranged in the first accommodating space above, which is convenient for user operation, and the junction unit is arranged in the third accommodating space below, which is convenient for connection with the outside and more convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG1 is a schematic structural diagram of a combiner cabinet provided by the present application from a first perspective;

[0009] FIG2 is a schematic structural diagram of the combiner cabinet provided by the present application from a second viewing angle;

[0010] FIG3 is a schematic structural diagram of the first accommodation space of the combiner cabinet provided in the present application;

[0011] FIG4 is a schematic diagram of the structure of the second accommodation space and the third accommodation space of the combiner cabinet provided in the present application.

[0012] The description of the accompanying drawings is as follows: junction cabinet 100, cabinet body 11, opening 110, first accommodating space 111, second accommodating space 112, third accommodating space 113, distribution unit 12, control unit 13, junction unit 14, first partition 151, second partition 152, first cabinet door 161, second cabinet door 162, human-computer interaction display screen 1611, indicator light 1612, first wiring clip 171, second wiring clip 172, third wiring clip 173, distribution element 121, horizontal slide rail 18, copper bus 141, disconnector 142, third partition 153, first sub-opening 1101, second sub-opening 1102. Modes for Carrying Out the Invention

[0013] Referring to Figures 1-4, the combiner cabinet 100 of this embodiment includes a cabinet body 11. The cabinet body 11 defines an opening 110 and a first accommodating space 111, a second accommodating space 112, and a third accommodating space 113 arranged vertically from top to bottom. The opening 110 communicates with the first accommodating space 111, the second accommodating space 112, and the third accommodating space 113, respectively. Each accommodating space is used to house a different functional component.

[0014] The cabinet 11 houses a power distribution unit 12, a control unit 13, and a busbar unit 14. The power distribution unit 12 is housed in a first housing space 111, the control unit 13 in a second housing space 112, and the busbar unit 14 in a third housing space 113. This compartmentalization allows for the distinct placement of different functional units, preventing interference between them, improving their reliability, and facilitating maintenance.

[0015] In addition, in the junction cabinet, the distribution unit 12 includes distribution components 121 such as circuit breakers, relays, and ACDC modules, which are used to distribute the collected electricity. The user operation is high, so it is placed in the first accommodation space 111 above. The junction unit 14 is less likely to be operated by the user, and it is mainly composed of exposed copper bars 141, which poses a greater safety risk. Therefore, it is placed in the third accommodation space 113 below, that is, close to the ground.

[0016] In the present embodiment, the cabinet body 11 is formed with a storage space, and the storage space is provided with a first partition 151 and a second partition 152 arranged in a vertical direction to separate the storage space into a first storage space 111, a second storage space 112 and a third storage space 113. At least one of the first partition 151 and the second partition 152 is movably provided in the storage space of the cabinet body 11, for example, it can be movably provided in the storage space of the cabinet body 11 in the vertical direction and the horizontal direction. Specifically, at least one of the first partition 151 and the second partition 152 is movably provided in the storage space of the cabinet body 11 in the vertical direction, and the corresponding storage space can be enlarged or reduced. For example, at least two slide grooves or slide rails arranged in a vertical direction are provided on the cabinet body 11, and the partition is provided on the slide groove or the slide rail, which can be moved up and down. The storage space formed by the partition and the cabinet body 11 and the storage space formed between the partitions can be changed in size. In one embodiment, the slide groove or slide rail extends in the horizontal direction, and the partition is set on the slide groove or slide rail, so that it can be horizontally pulled out from the cabinet 11, that is, the partition is also movably set in the accommodating space in the horizontal direction, and the functional elements can be placed on the partition, and the functional elements can be pulled out of the cabinet 11 for maintenance.

[0017] In other embodiments, at least one of the first partition 151 and the second partition 152 may be movable only vertically within the storage space of the cabinet 11. For example, the cabinet 11 may be provided with at least two vertically arranged fixings, and the partitions may be fixed with different fixings depending on the size of the storage space, thereby increasing or decreasing the storage space accordingly. The fixings may be, for example, slots, with corresponding buckles provided on the partitions, which are secured by engaging the slots and buckles.

[0018] In other embodiments, at least one of the first partition 151 and the second partition 152 can be disposed within the storage space of the cabinet 11 so as to be movable only in the horizontal direction. For example, the cabinet 11 can be provided with a slide groove or a slide rail corresponding to the movable partition. The slide groove or slide rail extends horizontally, and the partition is disposed on the slide groove or slide rail, thereby enabling horizontal movement and extraction. The number of slide grooves or slide rails can correspond to the number of movable partitions.

[0019] In a specific embodiment, the second partition 152 is movably arranged on the cabinet 11 only in the horizontal direction, and the control unit 13 is arranged on the second partition 152. The control unit 13 includes a UPS (uninterruptible power supply) host. When the user needs to inspect or repair the UPS host, the second partition 152 can be pulled out to facilitate operation of the UPS host.

[0020] Based on the specific functional components, in this embodiment, the first partition 151 is fixedly mounted on the cabinet 11. Since the power distribution unit 12 has a larger number of smaller power distribution components 121 than other units, and contains more complex wiring, a movable first partition 151 would be inconvenient for user operation. Therefore, the first accommodating space 111 is configured as a fixed space, and the first partition 151 is fixed.

[0021] The combiner cabinet 100 further includes a first cabinet door 161 and a second cabinet door 162, both disposed on the cabinet body 11 for closing the opening 110 of the cabinet body 11. The first cabinet door 161 at least closes the first accommodating space 111, and the second cabinet door 162 at least closes the third accommodating space 113. The first cabinet door 161 can be configured to close the second accommodating space 112, and the second cabinet door 162 can also be configured to close the second accommodating space 112.

[0022] The opening 110 of the cabinet body 11 includes a first sub-opening 1101 and a second sub-opening 1102. The first sub-opening 1101 is connected to the first accommodating space 111, and the second sub-opening 1102 is connected to the second accommodating space 112 and the third accommodating space 113 respectively. The vertical dimension of the first sub-opening 1101 is greater than or equal to the vertical dimension of the second sub-opening 1102. The first cabinet door 161 is movably connected to the cabinet body 11 to open or close the first sub-opening 1101, and the second cabinet door 162 is movably connected to the cabinet body 11 to open or close the second sub-opening 1102.

[0023] The third accommodating space 113 houses the busbar unit 14, which is prone to high voltage. Therefore, an electromagnetic lock is installed on the second cabinet door 162. The control unit 13 includes a battery management module (BMS), which is connected to the electromagnetic lock. When the busbar unit 14 is operating, the electromagnetic lock is locked to prevent it from opening. Only when the busbar unit 14 stops operating does the electromagnetic lock unlock, allowing the second cabinet door 162 to be opened. This electromagnetic lock ensures the safety of the busbar cabinet 100 and prevents the risk of electric shock.

[0024] The first cabinet door 161 is provided corresponding to the first accommodating space 111 and is operated more frequently by users than the second cabinet door 162 . Therefore, a human-machine interactive display screen 1611 and an indicator light 1612 are further provided on the first cabinet door 161 .

[0025] The power distribution unit 12 within the first housing space 111 is used to distribute electrical energy, so the wiring therein is numerous and complex. In this embodiment, a plurality of first wiring clips 171 arranged horizontally and a plurality of second wiring clips 172 arranged vertically are provided within the first housing space 111 to better organize the wiring therein.

[0026] Wiring clips are specifically positioned on the side and rear walls of the cabinet 11, so that the cable grooves of the first and second wiring clips 171, 172 face toward the opening 110 of the cabinet 11, facilitating the organization of wiring. A plurality of third wiring clips 173 are also positioned laterally on one side of the first partition 151, near the opening 110 of the cabinet 11. The cable grooves of the third wiring clips 173 face upward, facilitating the organization of wiring entering the first accommodating space 111.

[0027] The power distribution unit 12 includes multiple power distribution components 121. A transverse rail 18 is also disposed within the first accommodating space 111. The multiple power distribution components 121 are movably mounted on the transverse rail 18. Specifically, the power distribution components 121 can be mounted on the transverse rail 18 or can be locked into a slot on the transverse rail 18, thereby sliding on the rail 18 to facilitate space adjustment. Multiple rows of transverse rails 18 can be provided in the combiner cabinet 100 according to actual needs.

[0028] The combiner cabinet 100 is further provided with a communication unit 19, which is arranged on the side wall of the cabinet body 11 and located in the first accommodation space 111. The wiring of the communication unit 19 can be arranged from the side. The communication unit 19 is arranged on the side wall to better realize space utilization.

[0029] A third partition 153 may also be provided within the first accommodating space 111 to separate the space facing the cabinet door from the space facing away from the cabinet door. The first wiring clip 171, the second wiring clip 172, and the transverse slide 18 may all be provided on the third partition 153. The space facing the cabinet door is provided with the power distribution unit 12, and the space facing away from the cabinet door is provided with the UPS energy storage battery 131, which is connected to the UPS host. The space facing away from the cabinet door is also provided with a winding element 174, which can organize the wiring in the entire first accommodating space 111. That is, excess wiring can be wrapped around the winding element 174, making the wiring in the space more neat and tidy.

[0030] The confluence unit 14 in the third accommodating space 113 is used to converge electrical energy and is disposed at the bottom of the cabinet 11 . The confluence unit 14 includes a plurality of copper bars 141 extending from the bottom of the cabinet 11 for connection with the outside.

[0031] The confluence unit 14 further includes an isolating switch 142 , which can be disposed in the second accommodating space 112 and is a component that does not require frequent operation. It is disposed toward the side away from the cabinet door and can be fixed relative to the cabinet body 11 because it does not require frequent maintenance.

[0032] The embodiment of the present application further provides an energy storage device, which includes multiple battery clusters and a combiner cabinet. The combiner cabinet is the combiner cabinet 100 provided in the embodiment of the present application. The multiple battery clusters are electrically connected to the combiner units 14 of the combiner cabinet 100 respectively.

[0033] The structural layout of the combiner cabinet provided in the embodiment of the present application takes into account the functional characteristics of each functional unit. The power distribution unit 12, which has a large number of wiring, is placed in the upper first accommodating space 111, which requires high safety. The combiner unit 14, which has larger connection components, is placed in the lower third accommodating space 113. The control unit 13 in the second accommodating space 112 adopts a drawer-type structure. The combiner cabinet in the embodiment of the present application has a simple overall spatial design and is easy to maintain. A separate second cabinet door 162 is provided for the combiner unit 14, which utilizes an electrically controllable electromagnetic lock to improve overall safety.

Claims

1. A busbar cabinet, comprising a cabinet body, and a power distribution unit, a control unit and a busbar unit arranged in the cabinet body; the cabinet body is formed with an opening and a first accommodation space, a second accommodation space and a third accommodation space arranged in sequence from top to bottom in the vertical direction, the opening is respectively communicated with the first accommodation space, the second accommodation space and the third accommodation space, the power distribution unit is arranged in the first accommodation space, the control unit is arranged in the second accommodation space, and the busbar unit is arranged in the third accommodation space.

2. The busbar cabinet according to claim 1, wherein, The cabinet body is formed with an accommodation space, and a first partition board and a second partition board arranged in the vertical direction are provided in the accommodation space to divide the accommodation space into the first accommodation space, the second accommodation space and the third accommodation space; At least one of the first partition board and the second partition board is movably arranged in the accommodation space.

3. The busbar cabinet according to claim 2, wherein, At least one of the first partition board and the second partition board is movably arranged in the accommodation space in the vertical direction and / or the horizontal direction.

4. The busbar cabinet according to claim 3, wherein At least two chutes, slide rails or fixing members arranged in the vertical direction are provided in the cabinet body, the chutes, slide rails or fixing members extend in the horizontal direction, and at least one of the first partition board and the second partition board is arranged on the chutes, slide rails or fixing members.

5. The busbar cabinet according to claim 1, further comprising a first cabinet door and a second cabinet door, the first cabinet door is arranged on the cabinet body to at least close the first accommodation space; the second cabinet door is arranged on the cabinet body to at least close the third accommodation space.

6. The busbar cabinet according to claim 5, wherein, The second cabinet door is closed on the cabinet body by an electromagnetic lock, and the control unit includes a battery management module, and the battery management module is connected to the electromagnetic lock.

7. The busbar cabinet according to claim 2, wherein, A plurality of first wiring clips arranged horizontally and a plurality of second wiring clips arranged vertically are provided in the first accommodation space.

8. The busbar cabinet according to claim 7, wherein, A plurality of third wiring clips arranged horizontally are provided on one side of the first partition board close to the opening of the cabinet body, the card wire grooves of the first wiring clips and the second wiring clips all face the opening of the cabinet body, and the card wire grooves of the third wiring clips face upward.

9. The busbar cabinet according to any one of claims 1 to 8, wherein, A horizontal slide rail is provided in the first accommodation space, the power distribution unit includes a plurality of power distribution components, and the plurality of power distribution components are movably arranged on the horizontal slide rail.

10. An energy storage device, comprising a plurality of battery clusters and the busbar cabinet according to any one of claims 1 to 9, and the plurality of battery clusters are respectively electrically connected to the busbar unit.

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