CN220754022U - A high-pressure box, a flow guide device and an energy storage device - Google Patents

Abstract

The present application relates to a high-voltage box, a flow guide device and an energy storage device, and relates to the field of energy storage, and includes a box body, a first electrical connector and a second electrical connector; wherein the box body includes a first side wall and a second side wall; the first electrical connector is arranged on the first side wall, and the second electrical connector is arranged on the second side wall; the first electrical connector is conductively connected to the second electrical connector, and the first electrical connector is used for conductively connecting to a battery; the second electrical connector is used for conductively connecting to an external device, and the second electrical connector is conductively connected to the external device by plugging. The present application has the effect of facilitating the installation of the high-voltage box in a circuit by arranging the first electrical connector and the second electrical connector on the two side walls of the box body, and the second electrical connector is conductively connected to the external device.

Description

A high-pressure box, a flow guide device and an energy storage device

Technical Field

The present application relates to the field of energy storage systems, and in particular to a high-voltage box, a flow guide device, and an energy storage device.

Background technique

Energy storage power stations can be used to balance the imbalance of supply and demand in different cycles of the power grid, conduct power dispatch, and cope with peak and valley loads. General energy storage power stations store electricity in batteries and then input the electricity into the grid when needed.

Electrochemical energy storage containers are widely used. The high-voltage box is an important component of the energy storage system. The high-voltage box electrically controls multiple battery clusters in the energy storage system and structurally affects the layout of the container of the entire energy storage system.

The existing main electrical connection of the high-voltage box adopts the scheme of front-end incoming and front-end outgoing lines, and the cables at the front end of the high-voltage box may cross and interfere with each other.

Utility Model Content

The present application provides a high-voltage box, a flow guide device and an energy storage device, which can reduce the crossing of cables on the high-voltage box and facilitate wiring and connecting circuits on the high-voltage box.

The present application provides a high-voltage box, comprising a box body, a first electrical connector and a second electrical connector; wherein the box body comprises a first side wall and a second side wall; the first electrical connector is arranged on the first side wall, and the second electrical connector is arranged on the second side wall; the first electrical connector is conductively connected to the second electrical connector, and the first electrical connector is used for conductively connecting to a battery; the second electrical connector is used for conductively connecting to an external device, and the second electrical connector is conductively connected to the external device by plugging.

In the above technical solution, the first electrical connector and the second electrical connector are respectively located on the two side walls. When the first electrical connector is conductively connected to the battery and the second electrical connector is conductively connected to the external device, there are fewer electrical connectors on any side wall of the box, which facilitates the connection of the first electrical connector and the second electrical connector to the circuit.

The second electrical connector is plugged into an external device for conductive connection. The box is moved to plug the second electrical connector into the external device, thereby achieving a conductive connection between the second electrical connector and the external device, further facilitating a conductive connection between the second electrical connector and the external device.

The present application also provides a flow guiding device, including a conductive seat and a high-voltage box, wherein the conductive seat is conductively connected to the second electrical connector by plugging.

In the above technical solution, the high-voltage box is moved to plug the second electrical connector into the conductive seat, and then the battery is conductively connected to the first electrical connector, which facilitates the connection between the conductive seat and the high-voltage box in the guide device.

The present application also provides an energy storage device, including a battery cluster and a high-voltage box, wherein a first electrical connector is conductively connected to the battery cluster.

In the above technical solution, the first electrical connector is connected to the battery cluster to enable the high voltage box to control the battery cluster.

When the battery cluster is connected to the first battery connector, there are relatively few connectors on the first side wall, which facilitates the conductive connection between the first electrical connector and the battery cluster.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment;

FIG2 is a schematic structural diagram of a first electrical connector and a conductive seat in an embodiment;

FIG3 is a schematic diagram of a system structure of an embodiment;

FIG4 is a schematic structural diagram of a second electrical connector and a conductive seat in an embodiment;

FIG. 5 is a schematic structural diagram of a second electrical connector and a conductive seat in an embodiment.

1. Box body; 11. First side wall; 12. Second side wall; 2. First electrical connector; 3. Second electrical connector; 4. Conductive seat; 5. Frame; 6. Fuse; 7. Isolating switch.

Detailed ways

The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

The embodiment of the present application discloses a high-voltage box, which is used in an energy storage system, and the energy storage system also includes a battery cluster and an energy storage converter. The battery cluster stores electric energy or discharges it to the outside through the energy storage converter, and the high-voltage box is electrically connected between the battery cluster and the energy storage converter, and is a high-voltage circuit management module connecting the battery cluster and the energy storage converter.

The high-voltage box has the functions of battery cluster voltage/current acquisition, contactor control and protection. The high-voltage box is used to provide over-current protection, short-circuit protection, over-voltage protection or under-voltage protection for the battery cluster, thereby ensuring the normal operation of the entire energy storage system.

The high-voltage box is equipped with a main control module, positive and negative relays, pre-charge relays, pre-charge resistors, isolation switches, fuses, and shunts. The AC voltage in the high-voltage box is generally not less than 1000V, and the DC voltage is generally not less than 1500V. As a general name in the field of energy storage, the high-voltage box is also called a high-voltage control box.

1 , the high voltage box includes a box body 1, a first electrical connector 2 and a second electrical connector 3. The box body 1 includes a first side wall 11 and a second side wall 12; the first electrical connector 2 is disposed on the first side wall 11, and the second electrical connector 3 is disposed on the second side wall 12.

The first electrical terminal 2 is electrically conductively connected to the second electrical terminal 3 , and the first electrical terminal 2 is used for electrically conductively connecting to a battery.

The second electrical connector 3 is used for conductive connection with an external device, and the second electrical connector 3 is conductively connected to the external device by plugging.

Specifically, the box body 1 is a shell for placing electrical components. Exemplarily, the box body 1 is a rectangular box; optionally, the box body 1 is a hexagonal, trapezoidal or special-shaped box.

The box body 1 has four side walls, two of which are respectively a first side wall 11 and a second side wall 12. The first electrical connector 2 is disposed on the first side wall 11, and the cable connected to the first electrical connector 2 is located on the first side wall 11. The second electrical connector 3 is disposed on the second side wall 12, and the external device connected to the second electrical connector 3 is located on the second side wall 12.

In this embodiment, the battery is conductively connected to the first electrical connector 2 via a cable. Exemplarily, a plug is provided at one end of the cable connected to the first electrical connector 2, and the first electrical connector 2 includes a socket that matches the plug on the cable. The second electrical connector 3 is conductively connected to the external device.

It should be noted that the first electrical connector 2 and the second electrical connector 3 both include a group of connectors, and the group of connectors includes a positive connector and a negative connector. The positive connector is conductively connected to the positive electrode, and the negative connector is conductively connected to the negative electrode.

The first electrical connector 2 of the high-voltage box is conductively connected to the battery, and the second electrical connector 3 is conductively connected to the external device. The high-voltage box serves as a transfer device between the battery and the external device. The electric energy of the battery is output to the outside through the high-voltage box, and the external device charges the battery through the high-voltage box.

Compared with the prior art, the inlet and outlet of the high-voltage box are both located on the same side wall of the high-voltage box. In this embodiment, the first electrical connector 2 and the second electrical connector 3 are respectively located on the two side walls of the box body 1. When the first electrical connector 2 is electrically connected to the battery, and the second electrical connector 3 is electrically connected to the external device, there are fewer connectors on any side wall of the box body 1, which facilitates the connection of the first electrical connector 2 and the second electrical connector 3 to the circuit, and reduces the occurrence of crossing, interference or wrong connection of the cables connected to the high-voltage box.

The second electrical connector 3 is connected to the external device by plugging, and the box body 1 is moved to plug the second electrical connector 3 to the external device, thereby realizing the conductive connection between the second electrical connector 3 and the external device. The conductive connection between the second electrical connector 3 and the external device by plugging further facilitates the installation and connection between the second electrical connector 3 and the external device; it can save the need to connect the main cable to the second electrical connector 3, thereby reducing the workload of installing the high-voltage box.

1 , as an optional solution, the first side wall 11 is disposed opposite to the second side wall 12. Specifically, the first side wall 11 and the second side wall 12 are located at the front end and the rear end of the box body 1.

The first electrical connector 2 is connected to the first side wall 11 , and the second electrical connector 3 is connected to the second side wall 12 . The first side wall 11 and the second side wall 12 are arranged opposite to each other, and the first electrical connector 2 and the second electrical connector 3 are located on opposite sides of the box body 1 .

The cable connected to the first electrical connector 2 and the external device connected to the second electrical connector 3 are respectively at opposite ends of the box 1. The first electrical connector 2 is far away from the second electrical connector 3, and the impact between the installation of the cable and the external device is small, which facilitates installation.

The mobile box 1 is used to connect the second electrical connector 3 to the external device. The location where the external device is connected to the second electrical connector 3 is an exposed area. The cable and the external device are located at both ends of the box 1 respectively. The distance between the cable and the external device is large, and the installation of the cable is less affected by the external device.

Further, a first direction is defined, and the first direction is the relative direction between the first side wall 11 and the second side wall 12. In the drawings, the first direction is represented as the X direction. When two high-voltage boxes are arranged at intervals along the first direction, the two second side walls 12 of the two high-voltage boxes are the ends of the two high-voltage boxes that are close to each other. The figure illustrates two rows of high-voltage boxes arranged along the first direction, and each row of high-voltage boxes includes twelve high-voltage boxes arranged along a surface array perpendicular to the first direction.

In another embodiment, the structure of the box body 1 includes an annular column, and the first side wall 11 and the second side wall 12 are respectively parts of the annular side wall.

In another embodiment, the first side wall 11 and the second side wall 12 are two adjacent side walls in the box body 1 .

2 , as an optional solution, the second electrical connector 3 is connected to the external device in a snap-in manner.

Specifically, the external device includes a conductive socket 4, and the second electrical connector 3 is in bite contact with a portion of the conductive socket 4 of the external device used for connecting the second electrical connector 3. Exemplarily, the second electrical connector 3 is connected to the external device by a direct plug-in bite-in connection.

The second electrical connector 3 or the portion of the external device used for the second electrical connector 3 can produce elastic deformation. After the second electrical connector 3 and the portion of the external device used for the second electrical connector 3 move relative to each other in the first direction to the set position, the second electrical connector 3 and the conductive seat 4 can contact each other and maintain a compressed state.

The second electrical connector 3 is connected to the external device in a snap-in manner, which can keep the second electrical connector 3 and the external device plugged and fixed stably.

1 , as an optional solution, the first electrical connector 2 includes a terminal.

Terminals are usually wiring terminals, also known as wiring terminals, which are used for conducting or signal connection between cables and electrical components. The structure of terminals includes but is not limited to single-hole, double-hole, socket and hook.

The wiring terminals include but are not limited to guardrail-type wiring terminals, spring-type wiring terminals and guide rail-type wiring terminals. This embodiment only illustrates that the first electrical connector 2 can be a terminal structure. In another embodiment, the structure of the first electrical connector 2 is other forms that can be electrically connected to the cable, such as a connector or a connector.

2 , as an optional solution, the second electrical connector 3 includes a contact.

Referring to Figure 4, specifically, the contact is a duckbill contact, the contact is a square block, a notch is provided at one end of the contact facing away from the box body, and the conductive seat 4 of the external device is used to connect with the contact and is arranged correspondingly to the duckbill contact along the first direction, so that the part of the conductive seat 4 used to connect with the contact can extend into the notch of the contact, and contact with the side wall of the notch of the contact and remain pressed, so that the contact can be plugged and connected with the external device.

Referring to FIG5 , optionally, the contact is a cylindrical contact, and the contact includes an annular spring, an annular plate, and a plurality of strips. The plurality of strips are arranged at one end of the annular plate, the plurality of strips are arranged along the circumference of the annular plate, the strip length is arranged along the first direction, and the strips are integrally formed with the annular plate. The annular spring is a retractable spring, and at least two annular springs are provided, and two annular spring jackets are arranged outside the plurality of strips. The annular spring is indicated by a dotted frame in the attached figure; only two strips are indicated in the figure.

The conductive seat 4 of the external device is correspondingly arranged. Specifically, the conductive seat 4 includes a strip plate and a conductive column protruding from the strip plate. The conductive column is inserted into the inner side of the ring surrounded by the multiple strip plates along the first direction and is in contact and pressed with the multiple strip plates.

The contact forms also include but are not limited to blade contacts, butt contacts, wedge contacts, plug-in contacts, Z-shaped contact finger sliding contacts, and rolling sliding contacts.

The material of the contact includes at least one of copper, aluminum, chromium, silver, iron, tungsten and molybdenum. Exemplarily, the contact is a copper busbar.

1 , this embodiment further discloses a flow guiding device, including a conductive seat 4 and a high-voltage box, wherein the conductive seat 4 is plugged into a conductive connection with the second electrical connector 3 .

Specifically, the second electrical connector 3 is used for conductive connection with an external device, and the external device includes a conductive seat 4 , and the conductive seat 4 is conductively connected to the second electrical connector 3 .

The conductive seat 4 is fixedly arranged, and the high-voltage box is moved to be plugged with the conductive seat 4. In another embodiment, the high-voltage box can be placed and fixed, and then the conductive seat 4 is moved to be plugged with the high-voltage box.

In this embodiment, the high-voltage box is placed separately from the battery cluster, and the cables led out of the battery cluster are conductively connected to the corresponding high-voltage box. Multiple high-voltage boxes are placed together to facilitate conductive connection between multiple high-voltage boxes and one conductive seat 4.

The conductive seat 4 in the guide device and the high-voltage box are quickly connected, which reduces the connection and installation of cables on the high-voltage box.

1 , as an optional solution, the high voltage box is provided with a plurality of conductive seats 4 that are conductively connected to a plurality of second electrical connectors 3 .

Specifically, the conductive seat 4 includes a long copper bar, and the conductive seat 4 is fixed. One conductive seat 4 is conductively connected to multiple high-voltage boxes arranged vertically. In this embodiment, the guide is conductively connected to four high-voltage boxes arranged vertically. Optionally, the guide is conductively connected to two, three or five high-voltage boxes arranged vertically.

1 , as an optional solution, multiple high-voltage boxes are stacked and arranged. Specifically, the length of the conductive seat 4 is arranged vertically, and one conductive seat 4 is conductively connected to multiple vertically arranged high-voltage boxes.

The flow guide device also includes a frame 5, which has a plurality of storage spaces, which are arranged vertically at intervals, and a plurality of high-voltage boxes are respectively located in the plurality of storage spaces. The high-voltage box slides along the first direction in the storage space to a set position and is plugged and connected with the conductive seat 4.

In another embodiment, a plurality of high-voltage boxes are stacked in a vertical direction, and the top walls and bottom walls of two vertically adjacent high-voltage boxes are in contact with each other.

In another embodiment, a plurality of high-voltage boxes are arranged in sequence along the horizontal direction. Or the arrangement of the plurality of high-voltage boxes is determined according to design requirements.

3 , as an optional solution, the conductive base 4 includes a busbar, a fuse 6 and a disconnector 7 .

Specifically, the busbar is a copper busbar. The fuse 6 is an electrical appliance that uses the heat generated by itself to melt the fuse and disconnect the circuit when the current exceeds the specified value. The isolating switch 7 is an electrical appliance used to isolate the circuit. The isolating switch 7 has a break in the disconnected state; in the closed state, the normal working current and the short-circuit current under fault conditions pass through the circuit.

2 , the first electrical connector 2 is plug-connected with the busbar, and the busbar is plug-connected with the four first electrical connectors 2. The busbar is fixed on the frame 5, and the box 1 moves along the first direction to achieve the plug-in conductive connection between the first electrical connector 2 and the busbar, and the busbar is connected in series with the fuse 6 and the isolating switch 7 through the cable.

1 , this embodiment further discloses an energy storage device, including a battery cluster and a high-voltage box. The battery cluster includes a plurality of battery cells. The first electrical connector 2 is conductively connected to the battery cluster.

Specifically, the battery cluster includes a plurality of battery packs, the high-voltage box is connected in series with the plurality of battery packs, the battery pack includes a plurality of battery cells, and the plurality of battery cells in the battery pack are connected in series and in parallel.

In another embodiment, the battery cluster includes a plurality of battery packs, the battery packs include a plurality of battery modules connected in series and parallel, the battery modules include a plurality of battery cells, and the plurality of battery cells in the battery modules are connected in series and parallel.

In another embodiment, the battery cluster includes a plurality of battery cells, and the plurality of battery cells are connected in series and in parallel.

In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of the present application. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

The present application has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various replacements and improvements can be made to the present application, all of which fall within the scope of protection of the present application.

Claims (10)

1. The high-voltage box is characterized by comprising a box body, a first electric connector and a second electric connector; wherein,

the box body comprises a first side wall and a second side wall;

the first electric connector is arranged on the first side wall, and the second electric connector is arranged on the second side wall;

the first electric connector is in conductive connection with the second electric connector, and the first electric connector is used for being in conductive connection with a battery;

the second electric connector is used for conducting connection with external equipment, and the second electric connector is connected with the external equipment in an inserted conducting mode.

2. The high pressure tank of claim 1, wherein the first sidewall is disposed opposite the second sidewall.

3. The high voltage tank of claim 1, wherein the second electrical connector is snap-in connected to the external device.

4. The high voltage tank of claim 1, wherein the first electrical connector comprises a terminal.

5. The high voltage tank of claim 1, wherein the second electrical connector comprises a contact.

6. A flow guiding device comprising a conductive socket and a high voltage box according to any of claims 1-5, said conductive socket being in a plug-in conductive connection with said second electrical connector.

7. The flow guiding device as defined in claim 6, wherein a plurality of said high voltage boxes are provided, said conductive sockets being electrically connected to a plurality of said second electrical connectors.

8. The flow guide device of claim 7, wherein a plurality of the high pressure tanks are stacked.

9. The flow guiding device of claim 6, wherein the conductive mount comprises a bus bar, a fuse, and a disconnector that are conductively connected; wherein the busbar is in plug-in conductive connection with the second electrical connector.

10. An energy storage device comprising a battery cluster and the high voltage tank of any one of claims 1-5, the battery cluster being electrically connected to the first electrical connector.