High-voltage control box and energy storage system of optional master control BAU

Abstract

The invention discloses a high-voltage control box selectively equipped with a general control BAU and an energy storage system, and relates to the technical field of electrochemical energy storage, an assembly structure for mounting a general control BAU module is reserved on the inner side surface of a general control mounting cover plate, a mounting space for accommodating the general control BAU module is reserved in a box body shell, and when the general control BAU module is mounted, the general control BAU module can be mounted in the box body shell; a general control conversion terminal is arranged on a front panel of the box body shell, when a plurality of high-voltage control boxes need to be connected in parallel, a general control BAU module is installed in one of the high-voltage control boxes, and the general control BAU module is connected to the general control conversion terminal through a general control wire harness; a main control BCU module is installed in a box body shell of each high-voltage control box, the main control BCU module is in communication connection with a general control conversion terminal, the main control BCU module is connected with a general control BAU module through the general control conversion terminal, and only one general control BAU module needs to be purchased according to needs and then assembled on the high-voltage control box according to needs. And the function of industrial and commercial storage parallel operation can be realized by inserting the general control conversion terminal.

Description

Technical Field

[0001] This invention relates to the field of electrochemical energy storage technology, and more particularly to a high-voltage control box and energy storage system with optional master control unit (BAU). Background Technology

[0002] In the construction of electrochemical energy storage power stations, the energy storage field is divided into large-scale energy storage and user-side energy storage. Large-scale energy storage refers to facilities used for large-scale energy storage in the power system. These facilities have a large capacity and are generally used on the grid side, primarily to meet the needs of the power system in areas such as large-scale renewable energy integration, grid peak shaving and frequency regulation, and backup power. User-side energy storage refers to energy storage devices installed at the user's end, whose main function is to meet the user's own electricity demand.

[0003] User-side energy storage is further divided into residential energy storage (household energy storage) and industrial and commercial energy storage. Industrial and commercial energy storage refers to energy storage equipment installed on the electricity consumption side of office buildings, factories, etc. Its main goals include self-generation and self-consumption, serving as a backup power source, improving the reliability of power supply and energy quality for users; peak-valley price arbitrage, participating in the electricity market, etc. to obtain revenue. The components of an energy storage system are batteries, PCS (Power Conversion System) converters, BMS (Battery Management System), EMS (Energy Management System), and other electrical circuits, protection, monitoring systems, fire protection, etc.

[0004] The high-voltage control box for energy storage is a core component of commercial and industrial energy storage systems, playing a crucial role. It enables the energy storage system to perform functions such as charging and discharging control, protection, and monitoring. In commercial and industrial energy storage systems, the high-voltage control box plays a critical role.

[0005] Each commercial and industrial energy storage system generally consists of: several battery cells and a BMU forming a battery pack; several packs forming a battery cluster; each battery cluster requires a PDU (Power Distribution Unit) and a PCS (Power Control System) module. When the actual usage is a single commercial or industrial energy storage system, a BAU (Master Controller Unit) is not needed. However, if the user needs to connect multiple commercial and industrial energy storage systems in parallel for capacity expansion, a BAU (Master Controller Unit) is necessary to monitor and manage the allocation of each commercial and industrial energy storage system.

[0006] However, the following situations will arise: the location and wiring harness connection are limited, there is no external area to place the BAU, and due to the external wiring issues, many wiring harnesses will need to be manufactured later, which will increase the design and subsequent installation costs significantly.

[0007] For those skilled in the art, how to conveniently implement the installation of BAU in industrial and commercial storage and warehousing facilities is a technical problem that needs to be solved. Summary of the Invention

[0008] The core of this invention is to provide a high-voltage control box with an optional master control unit (BAU). A master control unit mounting cover is provided on the outer shell of the box, and space is reserved inside for installing the master control unit (BAU) module. This allows the master control unit (BAU) module to be installed inside the inner shell of the box, facilitating the parallel installation of the master control unit (BAU) module in industrial, commercial, and energy storage facilities. The specific solution is as follows:

[0009] A high-voltage control box with optional master control unit (BAU) includes a box shell, a master control unit mounting cover that can be detachably installed on the rear panel or side panel of the box shell, and an assembly structure for installing the master control unit (BAU) module is reserved on the inner side of the master control unit mounting cover, and an installation space for accommodating the master control unit (BAU) module is reserved inside the box shell.

[0010] The front panel of the enclosure is provided with a master control adapter terminal. In each of the high-voltage control boxes that need to be connected in parallel, at least one of the high-voltage control boxes is provided with a master control wiring harness for connecting the master control BAU module. The master control wiring harness is used to connect the master control adapter terminal and the master control BAU module.

[0011] The main control BCU module is installed inside the enclosure, and the main control BCU module is communicatively connected to the main control adapter terminal through the main wiring harness.

[0012] Optionally, a wire binding ring is provided on the main control mounting cover, and the main control wiring harness is bound to the wire binding ring.

[0013] Optionally, the assembly structure on the inner side of the master control mounting cover is a screw hole post, and the master control BAU module is fixed to the master control mounting cover by screws.

[0014] Optionally, the main control mounting cover is provided with four captive screws, and the main control mounting cover is fixed to the rear panel by screwing on the captive screws;

[0015] The main control mounting cover can be detached from the rear panel.

[0016] Optionally, the main control BCU module is located at the rear of the middle of the housing; a pre-charge resistor and a pre-charge contactor are provided between the main control BCU module and the main control BAU module.

[0017] Optionally, a switching power supply is mounted on the rear inner side of one of the side panels.

[0018] Optionally, a fuse FU, a shunt FL, a main negative contactor PCS-, and a main positive contactor PCS+ are provided at the front of the housing.

[0019] Optionally, the front panel is provided with indicator lights, BAT terminals, PCS terminals, AC terminals, BCU external terminals, BCU-BMU terminals, and a switch controller.

[0020] Optionally, the front panel is provided with hooks on both sides.

[0021] Optionally, heat dissipation holes are provided at the front, middle and rear parts of the side panel.

[0022] The present invention also provides an energy storage system, including a high-voltage control box with optional master control unit (BAU) as described in any of the above claims.

[0023] This invention provides a high-voltage control box with an optional master control unit (BAU). A master control unit mounting cover is detachably installed on the rear panel or side panel of the box housing. The inner side of the master control unit mounting cover has a pre-installed assembly structure for installing the master control unit (BAU) module. An installation space for the master control unit (BAU) module is provided inside the box housing. This space is empty before the master control unit (BAU) module is installed; when the master control unit (BAU) module is installed, it can be inserted into the box housing. A master control unit adapter terminal is provided on the front panel of the box housing. When multiple high-voltage control boxes need to be connected in parallel, a master control unit is installed in one of the high-voltage control boxes. The main control BAU module is connected to the main control adapter terminal via the main control wiring harness. Other high-voltage control boxes that do not have a main control BAU module installed do not need to have a main control wiring harness. The main control BCU module is installed inside the outer shell of each high-voltage control box. The main control BCU module communicates with the main control adapter terminal and is connected to the main control BAU module through the main control adapter terminal. When it is necessary to add a main control BAU module, only one main control BAU module needs to be purchased, then assembled on the high-voltage control box as needed, and the main control adapter terminal is plugged in to realize the function of industrial and commercial storage parallel operation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the internal structure of the high-voltage control box equipped with the main control BAU for this invention;

[0026] Figure 2Axonometric view of the front side of the high-voltage control box equipped with the main control BAU for this invention;

[0027] Figure 3 A schematic diagram showing the main control unit's mounting cover removed from the outer casing;

[0028] Figure 4 A schematic diagram showing the main control BAU module installed in the main control mounting cover;

[0029] Figure 5 A schematic diagram showing the main control mounting cover for installing the main control BAU module installed inside the enclosure.

[0030] Figure 6 Axonometric view of the rear side of the high-voltage control box equipped with the optional master control BAU after the master control cover plate has been installed in place;

[0031] Figure 7 A simplified electrical schematic diagram of the high-voltage control box equipped with the main control BAU for this invention;

[0032] Figure 8 This is a system topology diagram built into the main control BCU module of this invention.

[0033] The image includes:

[0034] 10. Enclosure shell, 101. Rear panel, 102. Side panel, 102. Ventilation holes, 1021. Front panel, 103. Main control adapter terminal, 1031. Indicator light, 1032. BAT terminal, 1033. PCS terminal, 1034. AC terminal, 1035. BCU external terminal, 1036. BCU-BMU terminal, 1037. Switch controller, 1038. Hanging lug, 104. Waist-shaped mounting hole, 1041. Top cover, 105. Base plate, 106.

[0035] Main control BCU module 110, main wiring harness 111, pre-charge resistor 120, pre-charge contactor 130, fuse FU140, shunt FL150, main negative contactor PCS-161, main positive contactor PCS+162, switching power supply 170.

[0036] 20 main control mounting cover, 201 wire binding ring, 202 non-detachable screw, 203 screw hole post, 30 main control BAU module, 301 main control wiring harness. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solution of the present invention, a detailed description of the high-voltage control box with optional master control unit (BAU) of the present invention is provided.

[0038] This invention provides a high-voltage control box with optional master control unit (BAU). When parallel connection of high-voltage control units (PDUs) is required, the master control unit (BAU) module can be installed inside one of the high-voltage control units (PDUs), and the corresponding connection can be formed through wiring harnesses. This enables the parallel operation of industrial and commercial storage units, and the installation is convenient and quick.

[0039] Combination Figure 1 , Figure 2 As shown, the high-voltage control box with optional master control unit (BAU) of the present invention includes a housing 10. The housing 10 is the external structure, and other structures are installed on the housing 10 or in the cavity inside the housing 10. The housing 10 includes a rear panel 101, two side panels 102, a front panel 103, a top cover 105, and a bottom plate 106, forming a cuboid shape. The front panel 103 and the rear panel 101 are perpendicular to the X-axis and are arranged opposite each other; the two side panels 102 are perpendicular to the Y-axis and are arranged opposite each other; the top cover 105 and the bottom plate 106 are perpendicular to the Z-axis and are arranged opposite each other. Of course, the housing 10 is not limited to a cuboid shape and can be configured with other shapes according to actual needs. The X-axis is the front-to-back direction, the Y-axis is the left-to-right direction, and the Z-axis is the up-down direction.

[0040] A master control mounting cover 20 is detachably mounted on the rear of the rear panel 101 or the side panel 102 of the enclosure 10, meaning the master control mounting cover 20 is located in the rear area of ​​the enclosure 10. An opening is provided on the rear panel 101 or one of the two side panels 102, and the master control mounting cover 20 can cover the opening to close it.

[0041] The side of the main control mounting cover 20 facing the inner cavity is the inner side. The inner side of the main control mounting cover 20 has a reserved assembly structure for mounting the main control BAU module 30. The main control BAU module 30 is fixed to the inner side of the main control mounting cover 20. The main control mounting cover 20 can be removed from the outer shell 10, and the main control BAU module 30 can be removed from the main control mounting cover 20.

[0042] Combination Figure 1 , Figure 7 As shown, the interior of the housing 10 is reserved with installation space for the main control BAU module 30. That is, the position where the main control BAU module 30 is to be installed is left empty and no other components are installed. When the main control BAU module 30 is installed in place, the main control BAU module 30 is fixed to the side of the main control mounting cover 20 and suspended in the inner cavity of the housing 10.

[0043] The front panel 103 of the enclosure 10 is provided with a main control adapter terminal 1031. The main control adapter terminal 1031 is used to plug in the external main control wiring (not shown in the figure). The main control wiring is used to plug into the main control adapter terminal 1031 of different high-voltage control boxes, so that different high-voltage control boxes can be interconnected. High-voltage control boxes (PDUs) without the main control BAU module 30 can form a communication connection with the main control BAU module 30.

[0044] The master control adapter terminal 1031 is a through-wall terminal. Each pin of the master control adapter terminal 1031 has a pin definition. Users can directly connect other industrial and commercial storage devices that need to be connected in parallel through some shielded twisted pair cables or power supply lines, so as to allocate and monitor the other industrial and commercial storage devices through the first master control.

[0045] In each of the high-voltage control boxes that need to be connected in parallel, at least one of the high-voltage control boxes has a master control adapter terminal 1031 reserved with a master control wiring harness 301 for connection with the master control BAU module 30. When the master control BAU module 30 is installed in one of the high-voltage control boxes, the master control BAU module 30 communicates with the master control adapter terminal 1031 through the master control wiring harness 301, and then communicates with the master control BCU module 110 in all the high-voltage control boxes connected in parallel.

[0046] Each high-voltage control unit (PDU) is equipped with a main control BCU module 110, which serves as the control core of the entire PDU. When multiple high-voltage control units need to be connected in parallel, the main control BCU module 110 needs to be connected to the main control BAU module 30. The main control BCU module 110 is installed inside the enclosure 10. The main control BCU module 110 is connected to the main control adapter terminal 1031 via a main wiring harness 111. The main control BCU module 110 and the main control adapter terminal 1031 are communicatively connected through the main wiring harness 111.

[0047] When there is only one high-voltage control unit (PDU), the main control unit (BAU) module 30 does not need to be installed. Space is reserved inside the outer casing 10 of the high-voltage control unit for installing the main control unit (BAU) module 30. When multiple high-voltage control units (PDUs) need to be connected in parallel, the main control unit (BAU) module 30 is installed inside one of the outer casings 10 and connected to the terminals of the main control harness 301. The main control harness 301 is connected to the main control adapter terminal 1031 of the high-voltage control unit, and the main control unit (BCU) module 110 is connected to the main control unit (BAU) module 30 via the main main harness 111. The main control adapter terminal 1031 of the high-voltage control unit is connected to the main control adapter terminals 1031 of other high-voltage control units via harnesses. The main control units (BCU) modules 110 of different high-voltage control units are all connected in parallel with the main control unit (BAU) module 30.

[0048] When a user needs to install a main control BAU module 30 on a high-voltage control unit (PDU), they only need to purchase one main control BAU module 30 as needed, assemble it into one of the high-voltage control units as needed, and plug in the terminals that are compatible with the main control wiring harness 301 and the main control BAU module 30 to realize the function of parallel operation of industrial and commercial storage.

[0049] Based on the above scheme, combined with Figure 3 , Figure 4 As shown, the present invention provides a wire binding ring 201 on the main control mounting cover 20, and the main control wiring harness 301 is bound to the wire binding ring 201. The wire binding ring 201 can be stamped on the main control mounting cover 20. After the main control wiring harness 301 is bound, it ensures that the plug of the main control wiring harness 301 and the main control BAU module 30 will not be subjected to force after subsequent assembly, thus avoiding affecting communication.

[0050] Combination Figure 4 As shown, the assembly structure on the inner side of the main control mounting cover 20 is a screw-hole post 203. The screw-hole posts 203 are located near the four top corners of the main control mounting cover 20. The main control BAU module 30 is fixed to the four screw-hole posts 203 by screws, thereby fixing the main control BAU module 30 to the main control mounting cover 20. The screw-hole posts 203 and screws are used for fixing, so as to achieve detachable assembly.

[0051] Combination Figure 3 , Figure 4 As shown, the main control mounting cover 20 is equipped with four captive screws 202, which will not come off the main control mounting cover 20. The main control mounting cover 20 is screwed and fixed to the rear panel 101 by the captive screws 202. The captive screws 202 are hand-tightening screws and can be directly tightened by hand to lock.

[0052] In one specific embodiment, an opening is provided on the rear panel 101, allowing the main control mounting cover 20 to be detached from the rear panel 101.

[0053] Combination Figure 1 As shown, the main control BCU module 110 is located in the rear middle of the enclosure 10, approximately 1 / 3 to 1 / 2 of the way back along the X-axis of the enclosure 10. A pre-charge resistor 120 and a pre-charge contactor 130 are positioned between the main control BCU module 110 and the main control BAU module 30. This layout facilitates the subsequent optional installation of the main control BAU module 30, and minimizes the wiring length from the main control BCU module 110 to each device, thus saving wiring costs.

[0054] The front of the enclosure 10 contains a fuse FU140, a shunt FL150, a main negative contactor PCS-161, and a main positive contactor PCS+162. Placing the main circuit at the front minimizes the required copper busbars, reducing the cost of copper busbars in the high-voltage control box. This design also simplifies subsequent production and assembly.

[0055] A switching power supply 170 is installed on the rear inner side of one of the side panels 102. The switching power supply 170 is directly opposite the main control BCU module 110, the pre-charge resistor 120 and the pre-charge contactor 130 in the X-axis direction. The pre-charge contactor 130 is located between the switching power supply 170 and the pre-charge resistor 120 in the Y-axis direction.

[0056] Combination Figure 1 As shown, the front panel 103 is equipped with indicator lights 1032, BAT terminals 1033, PCS terminals 1034, AC terminals 1035, BCU external terminals 1036, BCU-BMU terminals 1037, and a switch controller 1038. The AC terminals 1035, indicator lights 1032, BCU-BMU terminals 1037, BCU external terminals 1036, and main control adapter terminals 1031 are located on the upper side of the front panel and arranged in a straight line. The two PCS terminals 1034 and two BAT terminals 1033 are located below the aforementioned terminals on the left and right sides of the front panel 103, respectively, facilitating the wiring of communication and power harnesses and simplifying harness organization.

[0057] The front panel 103 has mounting ears 104 on both sides, and each mounting ear 104 has a waist-shaped mounting hole 1041. The waist-shaped mounting hole 1041 is used to fix the entire high-voltage control box in place by screws. The mounting ear 104 is a right-angle bent part, with one side fixed to the side panel 102 and the other side extending along the Y-axis. The waist-shaped mounting hole 1041 is provided on this extended surface to achieve fixed assembly.

[0058] The front, middle and rear parts of the side panel 102 are provided with heat dissipation holes 1021, which facilitate the convection of heat flow inside the outer shell 10 with the outside air and reduce the temperature rise inside the high-voltage control box.

[0059] During installation, remove the high-voltage control box from the cabinet and combine it with... Figure 3 As shown, loosen the four non-removable screws 202 on the rear panel 101 and remove the main control mounting cover 20 from the outer casing 10. Also, pull out the internal main control wiring harness 301 slightly.

[0060] like Figure 4As shown, after removing the main control mounting cover 20, remove the four screws pre-installed on the four screw holes 203, assemble the main control BAU module 30, and tighten the four screws. After tightening, insert the main control wiring harness 301, which needs to be connected to the main control BAU module 30, into the terminal of the main control BAU module 30. Secure the main control wiring harness 301 to the cable tie 201 using cable ties. The cable tie 201 is located on the upper side of the mounting cover 20 for easy wiring. The cable tie 201 ensures that the connection point between the main control BAU module 30 and the main control wiring harness 301 will not be subjected to stress after subsequent assembly, ensuring stable communication signals.

[0061] Combination Figure 5 Next, pull out the three wires (main control harness 301), and place them inside the main control mounting cover 20 as needed. Organize the wires neatly and place them inside the high-voltage control box. Figure 6 Then tighten the four 202 non-removable screws as needed to complete the optional master control BAU module 30.

[0062] The high-voltage control box of this invention, equipped with a master control unit (BAU), has a pre-reserved location and space for assembling the master control unit (BAU) module 30. If users require parallel operation between industrial and commercial storage facilities, they can directly purchase the master control unit (BAU) module 30 to achieve the parallel operation function. The high-voltage control box already includes a master control wiring harness 301, which can be directly plugged in for parallel connection, saving many tedious steps such as finding a place to fix the master control unit, drilling holes, finding screws, and sourcing the master control wiring harness.

[0063] Combination Figure 8 The diagram shown is a system topology diagram of the main control BCU module of this invention, which includes multiple high-voltage control boxes (1-N). It shows that the main control BAU module 30 is installed inside the outer shell 10 of the high-voltage control box on the far left. Only one main control BAU module 30 needs to be purchased as needed and then assembled on the high-voltage control box. Other high-voltage control boxes do not need to be equipped with main control BAU modules 30. The function of parallel operation of industrial and commercial storage can be realized by plugging in the main control adapter terminal 1031.

[0064] This solution has a reserved wall-penetrating main control adapter terminal 1031 for connection with the main control BAU module 30. The corresponding external parallel wiring harness is much simpler to make. It can be directly connected to other industrial and commercial storage facilities and display monitoring screens that do not have the main control BAU module 30 and need to be connected in parallel as needed. The subsequent wiring and assembly costs can be reduced a lot.

[0065] The present invention also provides an energy storage system, including the above-mentioned high-voltage control box with optional main control BAU, wherein the main control BAU module 30 can be selected according to the requirements and installed inside the outer shell 10 of the box.

[0066] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-voltage control box with optional master control unit (BAU), characterized in that, Includes a housing shell (10), the rear panel (101) or side panel (102) of the housing shell (10) can be detachably mounted with a master control mounting cover (20), and the inner side of the master control mounting cover (20) is reserved for the assembly structure of the master control BAU module (30), and the interior of the housing shell (10) is reserved for the installation space of the master control BAU module (30); A main control adapter terminal (1031) is provided on the front panel (103) of the enclosure (10). In each of the high-voltage control boxes that need to be connected in parallel, at least one of the high-voltage control boxes has a main control wiring harness (301) reserved for connection with the main control BAU module (30). The main control wiring harness (301) is used to connect the main control adapter terminal (1031) and the main control BAU module (30). The main control BCU module (110) is installed inside the outer casing (10) of the enclosure. The main control BCU module (110) and the main control adapter terminal (1031) are connected to each other via the main wiring harness (111).

2. The high-voltage control box with optional master control unit (BAU) as described in claim 1, characterized in that, A wire binding ring (201) is provided on the main control mounting cover plate (20), and the main control wire harness (301) is bound to the wire binding ring (201).

3. The high-voltage control box with optional master control unit (BAU) as described in claim 1, characterized in that, The assembly structure on the inner side of the main control mounting cover (20) is a screw hole post (203), and the main control BAU module (30) is fixed to the main control mounting cover (20) by screws.

4. The high-voltage control box with optional master control unit (BAU) as described in claim 1, characterized in that, The main control mounting cover (20) is provided with four non-detachable screws (202), and the main control mounting cover (20) is screwed and fixed to the rear panel (101) by the non-detachable screws (202). The main control mounting cover (20) can be detached from the rear panel (101).

5. The high-voltage control box with optional master control unit (BAU) as described in claim 4, characterized in that, The main control BCU module (110) is located in the middle and rear of the outer shell (10); a pre-charge resistor (120) and a pre-charge contactor (130) are provided between the main control BCU module (110) and the main control BAU module (30).

6. The high-voltage control box with optional master control unit (BAU) as described in claim 4, characterized in that, A switching power supply (170) is mounted on the rear inner side of one of the side panels (102).

7. The high-voltage control box with optional master control unit (BAU) as described in claim 1, characterized in that, The front part of the housing (10) is equipped with a fuse FU (140), a shunt FL (150), a main negative contactor PCS- (161), and a main positive contactor PCS+ (162).

8. The high-voltage control box with optional master control unit (BAU) as described in claim 1, characterized in that, The front panel (103) is provided with an indicator light (1032), a BAT terminal (1033), a PCS terminal (1034), an AC terminal (1035), a BCU external terminal (1036), a BCU-BMU terminal (1037), and a switch controller (1038).

9. The high-voltage control box with optional master control unit (BAU) as described in claim 1, characterized in that, The front panel (103) is provided with hooks (104) on both sides.

10. The high-voltage control box with optional master control unit (BAU) according to claim 1, characterized in that, The side panel (102) is provided with heat dissipation holes (1021) at the front, middle and rear parts respectively.

11. An energy storage system, characterized in that, The high-voltage control box includes the optional master control unit (BAU) as described in any one of claims 1 to 10.

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