Energy storage system and high-voltage control box thereof

Abstract

The utility model discloses an energy storage system and a high-voltage control box thereof, and relates to the technical field of battery energy storage, the high-voltage control box comprises a box body, an inner conducting bar connected with a main loop device in the box is arranged in the box body, and a front plate of the box body is also provided with a first socket terminal and a second socket terminal which are connected with a master control BCU; the panel cover is located outside the box body, the panel cover is detachably arranged on a front plate of the box body, a containing space is reserved between the panel cover and the front plate, wire harnesses of the display operation assembly in the panel cover are connected with the first plug terminal in a centralized mode, and the first plug terminal is connected with the first socket terminal in an inserted mode; the circuit breaker is located in the containing space and detachably arranged on the front plate of the box body, the circuit breaker is provided with an outer conducting bar detachably connected with the inner conducting bar, wire harnesses of a protection control assembly in the circuit breaker are connected with a second plug terminal in a centralized mode, and the second plug terminal is connected with the second socket terminal in an inserted mode. According to the high-voltage control box, the circuit breaker can be conveniently replaced, so that the manual labor intensity is reduced, the replacement efficiency is improved, and the maintenance cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of battery energy storage technology, and more specifically, to a high-voltage control box. Furthermore, this utility model also relates to an energy storage system including the aforementioned high-voltage control box. Background Technology

[0002] The existing high-voltage control box contains a circuit breaker to control circuit switching and protect electrical equipment from damage caused by overload, short circuit, and other faults. If the circuit breaker malfunctions, the power and communication lines connected to the entire high-voltage box must be disconnected first. Then, the high-voltage control box must be removed from the battery rack. Open the top cover and remove the copper busbars, cable ties, sampling points, and mounting plates associated with the circuit breaker. Next, disconnect the trip and feedback harness on the circuit breaker. Then, remove the circuit breaker and the copper busbars connected to it. Unscrew the screws on the circuit breaker and copper busbars from the outside, and unscrew the circuit breaker and its mounting plate. Replace the circuit breaker and reassemble it according to the above procedure.

[0003] Therefore, how to solve the problem of the extremely complicated process of replacing circuit breakers in existing high-voltage control boxes is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a high-voltage control box that can facilitate the replacement of circuit breakers, thereby reducing manual labor intensity, improving replacement efficiency, and saving maintenance costs.

[0005] Another objective of this invention is to provide an energy storage system including the aforementioned high-voltage control box.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-voltage control box, comprising:

[0008] The enclosure has an internal conductive busbar for connecting the main circuit devices inside the enclosure. The end of the internal conductive busbar extends out of the enclosure. The front panel of the enclosure also has a first socket terminal and a second socket terminal for connecting the main control BCU.

[0009] A panel cover is located outside the housing. The panel cover is detachably mounted on the front panel of the housing and has an accommodating space between it and the front panel. The panel cover is equipped with a display operation component. The wiring harness of the display operation component is centrally connected to a first plug terminal. The first plug terminal and the first socket terminal are plugged in.

[0010] A circuit breaker is located in the accommodating space and is detachably mounted on the front panel of the enclosure. The circuit breaker has an external conductive bus that is detachably connected to the end of the inner conductive bus. The circuit breaker also has a protection control assembly. The wiring harness of the protection control assembly is centrally connected to a second plug terminal, and the second plug terminal and the second socket terminal are plugged in.

[0011] Preferably, the panel cover has a first opening and a second opening at both ends along the height direction;

[0012] The first opening of the panel cover is provided with a detachable PCS output terminal cover. The circuit breaker is also provided with detachable PCS positive electrode conductor and PCS negative electrode conductor, which are arranged side by side in the PCS output terminal cover.

[0013] The second opening of the panel cover is provided with a detachable BAT input terminal cover. The circuit breaker is also provided with a detachable BAT positive conductor and a BAT negative conductor, which are arranged side by side in the BAT input terminal cover.

[0014] Preferably, there are two external conductive bars, which are symmetrically arranged at both ends of the circuit breaker in the height direction. Both ends of the inner conductive bar extend out of the interior of the housing and are symmetrically bent and fixed to the outer wall of the front panel of the housing in the height direction of the circuit breaker. The two ends of the inner conductive bar and the two external conductive bars are detachably connected.

[0015] Preferably, the circuit breaker is further provided with two fixed conductive bars at both ends in the height direction, which are arranged side by side on both sides of the outer conductive bar;

[0016] Wherein, the two fixed conductive bars at one end of the circuit breaker in the height direction are detachably connected to the positive conductive bar of the PCS and the negative conductive bar of the PCS;

[0017] The two fixed conductive bars at the other end of the circuit breaker in the height direction are detachably connected to the BAT positive conductive bar and the BAT negative conductive bar.

[0018] Preferably, the PCS output terminal cover is provided with a captive screw, and the panel cover is provided with a socket for the captive screw to pass through at a position near the first opening;

[0019] And / or, the BAT input terminal cover is provided with a lock-up screw, and the panel cover is provided with a socket for the lock-up screw to pass through at a position near the second opening.

[0020] Preferably, the front panel of the enclosure is divided into a communication interface area and a circuit breaker placement area;

[0021] The communication interface area is provided with several communication interfaces for connecting the signal lines inside the enclosure to external devices.

[0022] The circuit breaker placement area is detachably provided with the panel cover and the circuit breaker located inside the panel cover, and the circuit breaker placement area is also provided with the first socket terminal and the second socket terminal.

[0023] Preferably, a preset distance area is provided between the circuit breaker and the communication interface area, and the first socket terminal and the second socket terminal are centrally arranged within the preset distance area.

[0024] Preferably, the display operation component is positioned directly opposite the preset distance area of ​​the panel cover, and the components of the display operation component are arranged at intervals along the height direction of the panel cover.

[0025] Preferably, the circuit breaker has an operating handle on one side facing the panel cover, and the panel cover has a notch corresponding to the position of the operating handle.

[0026] An energy storage system includes a battery rack, a plurality of battery packs, and a high-voltage control box as described in any one of the preceding claims. The battery rack has a plurality of placement slots along its height, the high-voltage control box is placed in the highest placement slot, and the front panel of the box faces outward from the placement slot. The plurality of battery packs are placed one by one in the remaining placement slots.

[0027] The high-voltage control box provided by this utility model is usually placed in the placement slot of the battery rack, with the front panel of the high-voltage control box facing outwards. When it is necessary to replace the circuit breaker, there is no need to remove the high-voltage control box from the battery rack; the operation can be carried out directly on the battery rack. The specific operation steps are as follows: First, remove the panel cover from the front panel of the box, and at the same time, pull the first plug terminal out from the first socket terminal. Then, pull the second plug terminal out from the second socket terminal, and separate the external conductive busbar of the circuit breaker from the internal conductive busbar of the box. After that, the circuit breaker can be removed from the front panel of the box, thus completing the disassembly of the circuit breaker. Then, assemble the new circuit breaker according to the reverse steps of the above disassembly of the circuit breaker, and the replacement of the circuit breaker can be completed.

[0028] Therefore, the high-voltage control box provided by this utility model has the following beneficial effects:

[0029] (1) The circuit breaker is located on the outside of the high voltage control box. It can be replaced directly on the battery rack, avoiding the removal of the adjacent power lines and communication lines of the entire high voltage control box. This makes it convenient to replace the circuit breaker, reduces the intensity of manual labor, and saves maintenance costs.

[0030] (2) The display operation components of the panel cover and the main control BCU of the enclosure are connected by plug-in terminals to realize electrical signal connection. The protection control components of the circuit breaker and the main control BCU of the enclosure are also connected by plug-in terminals to realize electrical signal connection. This avoids the tedious process of disassembling, cutting, crimping or soldering wires when replacing the circuit breaker. This not only reduces maintenance time and makes it easier to replace the circuit breaker, but also reduces the use of tools and saves maintenance costs.

[0031] (3) When removing the circuit breaker, there is no need to remove the internal conductive busbar inside the box. This avoids the problem of having to remove many conductive busbars when replacing the circuit breaker in a conventional high-voltage control box. This not only facilitates the subsequent assembly of new circuit breakers, but also avoids the possibility of remaking the sampling points on the conductive busbar inside the box, which could lead to wiring errors and greatly reduces the probability of errors. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the energy storage system provided by the present invention;

[0034] Figure 2 This is a schematic diagram of the high-voltage control box provided by this utility model;

[0035] Figure 3 for Figure 2 The diagram shown illustrates the removal of the PCS output terminal cover and BAT input terminal cover from the high-voltage control box.

[0036] Figure 4 for Figure 3 The diagram shows the high-voltage control box with the panel cover removed.

[0037] Figure 5 for Figure 4 The diagram shows the high-voltage control box and the circuit breaker being removed.

[0038] Figure 6 for Figure 5 The diagram shown illustrates the removal of various conductive busbars from a circuit breaker.

[0039] Figure label:

[0040] 1-High voltage control box; 2-Battery rack; 3-Battery pack;

[0041] 11-Enclosure; 111-Internal conductive bar; 112-First socket terminal; 113-Second socket terminal; 11a-Communication interface area; 11b-Circuit breaker placement area;

[0042] 12-Panel cover; 121-Display operation component; 122-PCS output terminal cover; 123-BAT input terminal cover; 124-Notch; 125-Keep-on screw; 126-Handle;

[0043] 13-Circuit breaker; 131-External conductor bar; 132-Second plug terminal; 133-PCS positive conductor bar; 134-PCS negative conductor bar; 135-BAT positive conductor bar; 136-BAT negative conductor bar; 137-Fixed conductor bar; 138-Operating handle; 139-BAT positive external conductor bar; 1310-BAT negative external conductor bar. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] The core of this utility model is to provide a high-voltage control box that enables convenient replacement of circuit breakers, thereby reducing manual labor intensity, improving replacement efficiency, and saving maintenance costs.

[0046] Another core aspect of this invention is to provide an energy storage system that includes the aforementioned high-voltage control box.

[0047] It should be noted that in this embodiment, "first", "second", "third" and "fourth" are used only to describe advantages and should not be construed as indicating or implying relative importance.

[0048] Please refer to Figure 2 This application provides a high-voltage control box 1, including a box body 11, a panel cover 12, and a circuit breaker 13.

[0049] The enclosure 11 has an internal conductive busbar 111 for connecting the main circuit components inside the enclosure. The end of the internal conductive busbar 111 extends out of the enclosure 11. The front panel of the enclosure 11 also has a first socket terminal 112 and a second socket terminal 113 for connecting the main control BCU. Figure 5 As shown.

[0050] The panel cover 12 is located outside the housing 11. The panel cover 12 is detachably mounted on the front panel of the housing 11 with a space between it and the front panel. The panel cover 12 is equipped with a display operation component 121. The wiring harness of the display operation component 121 is centrally connected to a first plug terminal. The first plug terminal and the first socket terminal 112 are plugged into each other. Figure 5 As shown.

[0051] Circuit breaker 13 is located in the accommodating space and is detachably mounted on the front panel of housing 11. Circuit breaker 13 has an external conductive bus 131 detachably connected to the end of the internal conductive bus 111. Circuit breaker 13 also has a protection control assembly. The wiring harness of the protection control assembly is centrally connected to the second plug terminal 132. The second plug terminal 132 and the second socket terminal 113 are plugged in, such as... Figure 5 and Figure 6 As shown.

[0052] It should be noted that the circuit breaker 13 is equipped with an external conductive busbar 131, and the interior of the enclosure 11 is equipped with an internal conductive busbar 111. The internal conductive busbar 111 connects to the main circuit components inside the enclosure, and extends out of the enclosure 11 to be detachably connected to the external conductive busbar 131. This achieves electrical connection between the circuit breaker 13 and the main circuit components inside the enclosure, forming a current control circuit, thereby controlling the circuit's on / off state and protecting electrical equipment from damage caused by overloads, short circuits, and other faults. The main circuit components inside the enclosure include fuses, shunts, contactors, and other components. Within the high-voltage control box 1, the circuit breaker 13, fuses, shunts, and contactors typically work together to ensure the safe and stable operation of the energy storage system. Specific details regarding the configuration of the main circuit components inside the enclosure can be found in existing technologies and are not the focus of this application; therefore, they will not be elaborated upon further.

[0053] Existing high-voltage control boxes typically have data acquisition points, such as current and temperature sensors, installed on each conductor bar inside to monitor current and temperature and ensure the safe operation of the high-voltage control box. When replacing a circuit breaker in a conventional high-voltage control box, the internal conductor bars are removed, which may lead to incorrect wiring or loose crimping during subsequent circuit breaker wiring harness connections. However, this application eliminates the need to remove the internal conductor bars 111 inside the box 11 when replacing circuit breaker 13. This avoids the problem of removing numerous conductor bars required when replacing circuit breaker 13 in conventional high-voltage control boxes, and prevents wiring errors caused by re-fabricating sampling points on the conductor bars inside the box 11, significantly reducing the probability of errors.

[0054] The panel cover 12 is located outside the enclosure 11. The panel cover 12 is detachably mounted on the front panel of the enclosure 11, and the circuit breaker 13 is located in the space formed between the panel cover 12 and the enclosure 11. Even though the circuit breaker 13 is located outside the enclosure 11 and covered by the panel cover 12, the panel cover 12 isolates the circuit breaker 13 from the outside, preventing various conductive bars and wiring harnesses on the circuit breaker 13 from being exposed and increasing safety risks. Furthermore, since the high-voltage control box 1 is usually placed in the placement slot of the battery rack 2, and the front panel of the enclosure 11 faces outwards, the panel cover 12 located outside the front panel of the enclosure 11 is equipped with a display and operation component 121, facilitating the operator's observation of various electrical parameters and statuses of the high-voltage control box 1, as well as various electrical control operations. For example, Figure 2 As shown, the display operation component 121 includes various indicator lights and switching elements, such as DCV indicator lights, ODC indicator lights, OB indicator lights, BMS on / off buttons, DC switch, etc. Of course, the specific type can be adapted to actual needs and is not unique.

[0055] The wiring harnesses of various components in the display operation assembly 121 are centrally connected to the first plug terminal. The first plug terminal is located on the side of the front panel of the panel cover 12 facing the housing 11. The front panel of the housing 11 is provided with a first socket terminal 112 that connects to the main control BCU. By plugging the first plug terminal and the first socket terminal 112 together, the various components in the display operation assembly 121 can be electrically connected to the main control BCU, thereby enabling communication and interaction between the main control BCU and various components. It should be noted that the display operation assembly 121 and the main control BCU are electrically connected through pluggable terminals. When removing the panel cover 12, the first plug terminal can be directly pulled out from the first socket terminal 112. When assembling the panel cover 12, the first plug terminal can be directly inserted into the first socket terminal 112. This avoids the cumbersome process of disassembling, cutting, crimping, or soldering wires during replacement.

[0056] Circuit breaker 13 is equipped with a protection control assembly, which generally includes a trip unit and a feedback harness. The trip unit is a device mechanically connected to circuit breaker 13, used to release the holding mechanism and automatically disconnect circuit breaker 13 to cut off the circuit in case of abnormality. The feedback harness transmits the status of circuit breaker 13 to the main control unit (BCU) during operation, enabling timely detection and handling of faults. The trip unit harness and the feedback harness are centrally connected to the second plug terminal 132. The front panel of the enclosure 11 also has a second socket terminal 113 for connecting to the main control unit (BCU). Connecting the second plug terminal 132 and the second socket terminal 113 allows for electrical signal communication between the trip unit, the feedback harness, and the main control unit (BCU). It should be noted that, compared to conventional circuit breakers 13 where the trip unit, feedback harness, and main control BCU are connected via crimped wires, and the protection control components and main control BCU are connected via pluggable terminals, when removing circuit breaker 13, the second plug terminal 132 can be directly pulled out from the second socket terminal 113 for convenient removal. When assembling circuit breaker 13, the second plug terminal 132 of the new circuit breaker 13 is simply inserted back into the second socket terminal 113, avoiding the cumbersome processes of disconnecting, cutting, crimping, or soldering wires during replacement. Furthermore, if the trip unit and feedback harness are undamaged, the circuit breaker 13 cover can be opened to remove them, allowing for direct use when replacing with a new circuit breaker 13, thus avoiding the subsequent cumbersome assembly and wiring processes.

[0057] In summary, the high-voltage control box 1 provided in the above embodiment is placed in the placement slot of the battery rack 2, and the front panel of the high-voltage control box 1 faces outward. This high-voltage control box 1 has the following advantages:

[0058] First, the replacement can be completed directly on the battery rack 2, avoiding the need to remove the adjacent power and communication lines of the entire high-voltage control box 1, thus facilitating the replacement of the circuit breaker 13, reducing manual labor intensity, and saving maintenance costs.

[0059] Secondly, it can avoid the tedious process of disassembling, cutting, crimping, or soldering wires during replacement, which not only reduces maintenance time and makes it easier to replace circuit breaker 13, but also reduces the use of tools and saves maintenance costs.

[0060] Third, it can avoid the problem of having to remove many conductor bars when replacing circuit breaker 13 in conventional high-voltage control box 1. It not only facilitates the subsequent assembly of new circuit breaker 13, but also avoids wiring errors caused by remaking the sampling points on the conductor bars inside the box 11, greatly reducing the probability of errors.

[0061] Understandably, the high-voltage control box 1 requires an external PCS (Power Conversion System) for connecting to the power grid or load equipment. It also needs an external BAT (Battery) group to connect the energy storage battery group to the external power system, enabling power input and output. Furthermore, both the PSC interface and the BAT group interface must be connected to circuit breaker 13 to ensure the safety of the protection circuit and equipment within the circuit connected to circuit breaker 13.

[0062] Based on the above embodiments, as a preferred embodiment, the panel cover 12 is provided with a first opening and a second opening at both ends along the height direction.

[0063] Please refer to Figure 3 The first opening of the panel cover 12 is provided with a detachable PCS output terminal cover 122. The circuit breaker 13 is also provided with a detachable PCS positive electrode conductor 133 and a PCS negative electrode conductor 134, which are arranged side by side in the PCS output terminal cover 122.

[0064] It should be noted that the PCS positive terminal busbar 133 and the PCS negative terminal busbar 134 are connected to the PSC positive and negative interfaces respectively via wires to achieve electrical connection between the circuit breaker 13 and the PSC. The PCS positive terminal busbar 133 and the PCS negative terminal busbar 134 are arranged side by side to facilitate wiring between the circuit breaker 13 and the PSC, i.e., to facilitate wiring. In addition, the PCS output terminal cover 122 covers the outside of the PCS positive terminal busbar 133 and the PCS negative terminal busbar 134, which can prevent the conductors from being exposed and increasing the risk of safety hazards.

[0065] Please refer to Figure 3 and Figure 6 The second opening of the panel cover 12 is provided with a detachable BAT input terminal cover 123. The circuit breaker 13 is also provided with a detachable BAT positive conductor 135 and a BAT negative conductor 136, which are located side by side in the BAT input terminal cover 123.

[0066] It should be noted that the BAT positive terminal busbar 135 and the BAT negative terminal busbar 136 are connected to the positive and negative terminals of the battery pack respectively via wires to achieve electrical connection between the circuit breaker 13 and the battery pack. Similarly, the BAT positive terminal busbar 135 and the BAT negative terminal busbar 136 are arranged side-by-side to facilitate wiring between the circuit breaker 13 and the battery pack, i.e., to facilitate wiring. Furthermore, the BAT input terminal cover 123 covers the outside of the BAT positive terminal busbar 135 and the BAT negative terminal busbar 136, which can prevent the conductors from being exposed and thus avoid increasing safety risks.

[0067] In addition, when it is necessary to replace circuit breaker 13, before removing panel cover 12, first remove PCS output terminal cover 122 and BAT input terminal cover 123 from panel cover 12. After removing circuit breaker 13 from the front panel of enclosure 11, PCS positive conductor 133, PCS negative conductor 134, BAT positive conductor 135, and BAT negative conductor 136 can be removed from circuit breaker 13. When replacing circuit breaker 13 later, they can be reassembled and used, thereby saving maintenance costs.

[0068] Based on the above embodiments, as a further preferred option, please refer to... Figure 3 The PCS output terminal cover 122 is provided with a non-removable screw 125, and the panel cover 12 is provided with a socket for the non-removable screw 125 to pass through near the first opening.

[0069] Understandably, loosening the captive screw 125 will allow it to be removed from the socket, thus removing the PCS output terminal cover 122. At this point, the captive screw 125 remains firmly attached to the PCS output terminal cover 122. When reassembling the PCS output terminal cover 122, simply align the captive screw 125 with the socket and tighten it to complete the assembly. This facilitates the disassembly and reassembly of the PCS output terminal cover 122, thereby simplifying the replacement of the circuit breaker 13. It should be noted that multiple captive screws 125 can be used to ensure a secure connection between the PCS output terminal cover 122 and the panel cover 12.

[0070] Of course, please refer to Figure 3 The BAT input terminal cover 123 may also be provided with a captive screw 125, and the panel cover 12 has a socket for the captive screw 125 to pass through near the second opening. This facilitates the disassembly and assembly of the BAT input terminal cover 123, thereby facilitating the replacement of the circuit breaker 13.

[0071] Based on the above embodiments, as a further preferred option, please refer to... Figure 5 and Figure 6 Two external conductive bars 131 are provided, symmetrically arranged at both ends of the circuit breaker 13 in the height direction. Both ends of the inner conductive bar 111 extend into the housing 11 and are symmetrically bent and fixed to the outer wall of the front panel of the housing 11 along the height direction of the circuit breaker 13. The two ends of the inner conductive bar 111 and the two external conductive bars 131 are detachably connected. This arrangement has the following advantages:

[0072] First, the circuit breaker 13 and the main circuit components inside the enclosure 11 are electrically connected to form a current loop.

[0073] Secondly, the end of the inner conductive busbar 111 is bent and fixed to the outer wall of the front plate of the housing 11, which not only facilitates the connection between the outer conductive busbar 131 and the inner conductive busbar 111, but also makes the inner conductive busbar 111 and the outer conductive busbar 131 in close contact, increasing the conductive area and improving the efficiency and reliability of current transmission.

[0074] Third, the enclosure 11 is electrically connected to the two external conductive bars 131 on the circuit breaker 13 using only one bent inner conductive bar 111, which makes reasonable arrangement of the inner conductive bar 111 and saves electrical connection costs.

[0075] Fourth, the two external conductor bars 131 are symmetrically arranged along the height direction of the circuit breaker 13, which helps the circuit breaker 13 to be stably installed on the front plate of the enclosure 11 and is less prone to tilting.

[0076] In one specific embodiment, fixing screws are inserted into the front panel of the housing 11, passing through the ends of the outer conductive busbar 131 and the inner conductive busbar 111 in sequence. This allows the outer conductive busbar 131, the inner conductive busbar 111, and the front panel of the housing 11 to be detachably connected as one unit, thereby more securely installing the circuit breaker 13.

[0077] Based on the above embodiments, as a further preferred option, please refer to... Figure 6 The circuit breaker 13 is also provided with two fixed conductive bars 137 at both ends in the height direction, which are located side by side on both sides of the external conductive bar 131.

[0078] Among them, the two fixed conductive bars 137 at one end of the circuit breaker 13 in the height direction are detachably connected to the positive conductive bar 133 and the negative conductive bar 134 of the PCS; the two fixed conductive bars 137 at the other end of the circuit breaker 13 in the height direction are detachably connected to the positive conductive bar 135 and the negative conductive bar 136 of the BAT.

[0079] The above arrangement, where the PCS positive conductor 133, one external conductor 131, and the PCS negative conductor 134 are arranged side by side at one end of the circuit breaker 13, and the BAT positive conductor 135, another external conductor 131, and the BAT negative conductor 136 are arranged side by side at the other end of the circuit breaker 13, enhances the overall balance of the circuit breaker 13 and makes the installation of the circuit breaker 13 more stable.

[0080] In one specific embodiment, both ends of the circuit breaker 13 in the height direction are connected to the front plate of the enclosure 11 by two parallel fixing screws, so as to securely install the circuit breaker 13 on the front plate of the enclosure 11.

[0081] In one specific embodiment, fixing screws are inserted into the front panel of the housing 11, sequentially passing through the fixing conductive bus 137 and its corresponding PCS positive conductive bus 133, PCS negative conductive bus 134, BAT positive conductive bus 135 or BAT negative conductive bus 136. This not only enables the PCS positive, PCS negative, BAT positive, BAT negative conductive bus 136 and circuit breaker 13 to be detachably connected, but also strengthens the connection between the circuit breaker 13 and the front panel of the housing 11.

[0082] In one specific embodiment, please refer to Figure 3 , Figure 5 and Figure 6 The BAT positive electrode conductor 135 and the BAT negative electrode conductor 136 are integrated. The front panel of the housing 11 has a horizontal BAT positive electrode external conductor 139 and a BAT negative electrode external conductor 1310, which are respectively connected to the positive and negative terminals of the battery pack. The BAT positive electrode external conductor 139 supports and contacts the BAT positive electrode conductor 135, and the BAT negative electrode external conductor 1310 supports and contacts the BAT negative electrode conductor 136. This arrangement allows for the wiring of the circuit breaker 13 and the battery pack while providing stable support for the circuit breaker 13, making the installation of the circuit breaker 13 more secure.

[0083] Based on the above embodiments, as a further preferred option, please refer to... Figure 5 The front panel of the enclosure 11 is divided into a communication interface area 11a and a circuit breaker placement area 11b. The communication interface area 11a is provided with several communication interfaces for connecting the signal lines inside the enclosure 11 to external devices. The circuit breaker placement area 11b is detachably provided with a panel cover 12 and a circuit breaker 13 located inside the panel cover 12. The circuit breaker placement area 11b is also provided with a first socket terminal 112 and a second socket terminal 113.

[0084] Understandably, the high-voltage control box 1 also houses other components, such as the main control BCU, which needs to connect to external devices via electrical signals for data exchange. Thus, dividing the front panel of the high-voltage control box 1 into a communication interface area 11a and a circuit breaker placement area 11b, allows communication interfaces to be installed in the communication interface area 11a, enabling electrical signal connection between other components and external devices. The circuit breaker 13, the panel cover 12, and its associated PCS output terminal cover 122, BAT input terminal cover 123, first socket terminal 112, and second socket terminal 113 are all located in the circuit breaker placement area 11b. When replacing the circuit breaker 13, it is not necessary to disconnect other communication lines connecting the high-voltage control box 1 to external devices, further facilitating circuit breaker 13 replacement, reducing maintenance time, and saving maintenance costs.

[0085] It should be noted that the front panel of the housing 11 on the battery rack 2 faces outward, and the corresponding communication interface area 11a on the battery rack 2 is covered with a sealing plate to prevent electrical components and their communication lines from being exposed and causing electrical safety problems.

[0086] In one specific embodiment, a protrusion facing away from the interior of the enclosure 11 is provided on one side of the front panel of the enclosure 11 to form a communication interface area 11a, which makes it easy for operators to distinguish between the communication interface area 11a and the circuit breaker placement area 11b, ensuring that the communication interface or circuit breaker 13 is installed in place.

[0087] In addition, the panel cover 12 is composed of a front panel, a left side panel, and a right side panel integrally connected. The left side panel of the panel cover 12 is connected to the protruding sidewall by fixing screws, and the right side panel of the panel cover 12 has an ear plate at its end away from the front panel. The ear plate is connected to the front panel of the enclosure 11 by fixing screws. This arrangement allows the panel cover 12 to be placed close to the boundary between the communication interface area 11a and the circuit breaker placement area 11b, which can reduce the area occupied by the circuit breaker placement area 11b and help to simplify the front panel size of the enclosure 11.

[0088] Based on the above embodiments, as a further preferred option, please refer to... Figure 4 A handle 126 is provided on the right side panel of the panel cover 12 away from the communication interface area 11a, so that the operator can easily remove and install the panel cover 12 by holding the handle 126.

[0089] Based on the above embodiments, as a further preferred option, please refer to... Figure 5 A preset distance area is provided between the circuit breaker 13 and the communication interface area 11a, and the first socket terminal 112 and the second socket terminal 113 are concentrated within the preset distance area. That is to say, in the circuit breaker placement area 11b, compared with the circuit breaker 13, the first socket terminal 112 and the second socket terminal 113 are concentrated closer to the communication interface area 11a. This facilitates the wiring between the main control BCU inside the enclosure 11 and the first socket terminal 112, the second socket terminal 113, and several communication interfaces, and also makes the wiring more organized.

[0090] Based on the above embodiments, as a further preferred option, please refer to... Figure 5 A display operation component 121 is positioned directly opposite the preset distance area on the panel cover 12, and the various components in the display operation component 121 are arranged at intervals along the height direction of the panel cover 12. This facilitates the insertion and connection of the first plug terminals and the first socket terminals 112 of the various components in the display operation component 121.

[0091] Based on the above embodiments, as a further preferred option, please refer to... Figure 2The circuit breaker 13 has an operating handle 138 on one side facing the panel cover 12, and the panel cover 12 has a notch 124 corresponding to the position of the operating handle 138.

[0092] It should be noted that the operating handle 138 can control the open and closed states of the circuit breaker 13, thereby enabling the operator to manually control the circuit. Since the display operation component 121 is set directly in front of the preset distance area, the panel cover 12 can be provided with a notch 124 corresponding to the circuit breaker placement area 11b (i.e., the circuit breaker 13) to enable the operator to manually rotate the operating handle 138.

[0093] Please refer to Figure 1 The present invention also provides an energy storage system, including a battery rack 2, a plurality of battery packs 3 and a high-voltage control box 1 disclosed in the above embodiments. The battery rack 2 is provided with a plurality of placement slots along the height direction. The high-voltage control box 1 is placed in the placement slot of the highest layer, and the front panel of the box body 11 faces the outside of the placement slot. The plurality of battery packs 3 are placed one by one in the remaining placement slots.

[0094] In summary, the specific process of removing circuit breaker 13 when replacing circuit breaker 13 in the high-voltage control box 1 provided in this application is as follows:

[0095] Step 1: First, loosen the captive screws 125 between the PCS output terminal cover 122, the BAT input terminal cover 123, and the panel cover 12 to remove the PCS output terminal cover 122 and the BAT input terminal cover 123. Figure 3 As shown;

[0096] Step 2: Remove the fixing screws between the panel cover 12 and the front panel of the housing 11, and at the same time pull the first plug terminal out of the first socket terminal 112 to remove the panel cover 12 from the front panel of the housing 11. Figure 4 As shown;

[0097] Step 3: Pull the second plug terminal 132 out of the second socket terminal 113. If the trip unit and feedback harness are not damaged, you can open the top cover of the circuit breaker 13, remove the trip unit and feedback harness, and then use the new circuit breaker 13 directly after replacement.

[0098] Step 4: Remove the fixing screws between the circuit breaker 13 and the front panel of the enclosure 11, and remove the fixing screws between the two external conductive bars 131 of the circuit breaker 13 and the two ends of the internal conductive bars 111 of the enclosure 11, so as to remove the circuit breaker 13 from the front panel of the enclosure 11. Figure 5 As shown;

[0099] Step 5: Remove the PCS positive terminal busbar 133, PCS negative terminal busbar 134, BAT positive terminal busbar 135, and BAT negative terminal busbar 136 from circuit breaker 13 so that they can be reassembled and used when replacing circuit breaker 13 later. This completes the removal of the old circuit breaker 13. Figure 6 As shown.

[0100] Then, the new circuit breaker 13 is assembled by following the reverse steps of disassembling the circuit breaker 13 described above, and the replacement of the circuit breaker 13 can be completed.

[0101] It should be noted that when the circuit breaker 13 needs to be replaced, the operator can use a ladder or a block to directly replace the circuit breaker 13 on the battery rack 2. Moreover, there is no need to remove the power lines and communication lines adjacent to the entire high voltage control box 1, which greatly improves the convenience of replacing the circuit breaker 13, reduces the intensity of manual labor, and saves maintenance costs.

[0102] It should also be noted that the above-mentioned types of busbars use copper busbars with high conductivity. Of course, aluminum busbars can also be used. The appropriate type is selected based on the actual working conditions.

[0103] In this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0104] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0105] The energy storage system and its high-voltage control box provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high voltage control cabinet characterized by, include: The enclosure (11) has an internal conductive bus (111) for connecting the main circuit devices inside the enclosure. The end of the internal conductive bus (111) extends out of the enclosure (11). The front panel of the enclosure (11) is also provided with a first socket terminal (112) and a second socket terminal (113) for connecting the main control BCU. A panel cover (12) is located outside the housing (11). The panel cover (12) is detachably mounted on the front panel of the housing (11) and there is a space between them. The panel cover (12) is provided with a display operation component (121). The wiring harness of the display operation component (121) is centrally connected to the first plug terminal. The first plug terminal and the first socket terminal (112) are plugged in. The circuit breaker (13) is located in the accommodating space and is detachably mounted on the front panel of the housing (11). The circuit breaker (13) is provided with an external conductive bus (131) that is detachably connected to the end of the inner conductive bus (111). The circuit breaker (13) is also provided with a protection control component. The wiring harness of the protection control component is centrally connected to the second plug terminal (132). The second plug terminal (132) and the second socket terminal (113) are plugged in.

2. The high voltage control box of claim 1, wherein, The panel cover (12) has a first opening and a second opening at both ends along the height direction; The first opening of the panel cover (12) is provided with a detachable PCS output terminal cover (122), and the circuit breaker (13) is also provided with a detachable PCS positive electrode conductor (133) and a PCS negative electrode conductor (134), which are arranged side by side in the PCS output terminal cover (122). The second opening of the panel cover (12) is provided with a detachable BAT input terminal cover (123). The circuit breaker (13) is also provided with a detachable BAT positive electrode conductor (135) and a BAT negative electrode conductor (136), which are located side by side in the BAT input terminal cover (123).

3. The high voltage control box of claim 2, wherein, Two external conductive bars (131) are provided, and the two external conductive bars (131) are symmetrically arranged at both ends of the circuit breaker (13) in the height direction. Both ends of the inner conductive bar (111) extend out of the interior of the housing (11) and are symmetrically bent and fixed to the outer wall of the front plate of the housing (11) along the height direction of the circuit breaker (13). The two ends of the inner conductive bar (111) and the two external conductive bars (131) are detachably connected.

4. The high voltage control box of claim 3, wherein, The circuit breaker (13) is also provided with two fixed conductive bars (137) at both ends in the height direction, which are located side by side on both sides of the external conductive bar (131). Among them, the two fixed conductive bars (137) at one end of the circuit breaker (13) in the height direction are detachably connected to the positive conductive bar (133) of the PCS and the negative conductive bar (134) of the PCS. Two of the fixed conductive bars (137) at the other end of the circuit breaker (13) in the height direction are detachably connected to the BAT positive conductive bar (135) and the BAT negative conductive bar (136).

5. The high voltage control box of claim 2, wherein, The PCS output terminal cover (122) is provided with a non-detachable screw (125), and the panel cover (12) is provided with a socket for the non-detachable screw (125) to pass through near the first opening; And / or, the BAT input terminal cover (123) is provided with a captive screw (125), and the panel cover (12) is provided with a socket for the captive screw (125) to pass through at a position adjacent to the second opening.

6. The high-voltage control box according to any one of claims 1 to 5, characterized in that The front panel of the enclosure (11) is divided into a communication interface area (11a) and a circuit breaker placement area (11b). The communication interface area (11a) is provided with several communication interfaces for connecting the signal lines inside the enclosure (11) to external devices. The circuit breaker placement area (11b) is detachably provided with the panel cover (12) and the circuit breaker (13) located inside the panel cover (12), and the circuit breaker placement area (11b) is also provided with the first socket terminal (112) and the second socket terminal (113).

7. The high voltage control box of claim 6, wherein, A preset distance area is provided between the circuit breaker (13) and the communication interface area (11a), and the first socket terminal (112) and the second socket terminal (113) are centrally arranged within the preset distance area.

8. The high voltage control box of claim 7, wherein, The display operation component (121) is positioned directly opposite the preset distance area on the panel cover (12), and each element in the display operation component (121) is arranged at intervals along the height direction of the panel cover (12).

9. The high voltage control box of claim 7, wherein, The circuit breaker (13) has an operating handle (138) on one side facing the panel cover (12), and the panel cover (12) has a notch (124) corresponding to the position of the operating handle (138).

10. An energy storage system characterized by, The device includes a battery rack (2), several battery packs (3) and a high-voltage control box (1) as described in any one of claims 1 to 9. The battery rack (2) has several placement slots along the height direction. The high-voltage control box (1) is placed in the placement slot at the top layer, and the front panel of the box body (11) faces the outside of the placement slot. Several battery packs (3) are placed one by one in the remaining placement slots.

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