Energy storage electric cabinet

Abstract

The utility model relates to an energy storage electric control box, which comprises a box body, and a low-voltage control area, a power distribution area and a direct-current high-voltage area which are arranged in the box body, the direct-current high-voltage area is used for being connected with a plurality of battery clusters, and at least one high-voltage electrical module is arranged in the direct-current high-voltage area. Each high-voltage electrical module comprises a positive busbar, a negative busbar and a direct-current surge protection unit, the high-voltage electrical module is used for connecting at least one battery cluster and at least one energy storage converter, and the number of the high-voltage electrical modules is the same as that of the energy storage converters; the box body is provided with a plurality of mounting pieces in the direct current high-voltage area, the plurality of mounting pieces respectively correspond to the positive busbar, the negative busbar and the direct current surge protection unit, and the plurality of mounting pieces are used for enabling the high-voltage electrical module to be detachably and fixedly connected with the box body. The energy storage electric cabinet can be compatible with different connection schemes and is high in universality.

Description

Technical Field

[0001] The utility model relates to the field of energy storage containers, in particular to an energy storage electric control box. Background Art

[0002] The container energy storage system is an integrated energy storage system, which integrates battery cabinets, energy storage electric control boxes and thermal management equipment. Among them, the main function of the energy storage electric control box is to distribute electric energy to various loads through power distribution control, manage batteries, and perform power-off protection in the event of short circuit, overload or leakage. At present, the interior of the energy storage electric control box is divided into different areas according to function, among which a high-voltage electrical module for connecting the battery cluster is usually provided in the DC high-voltage area. However, the current connection method between the high-voltage electrical module and the battery cluster is fixed, so that the energy storage electric control box can only be applied to a certain connection method. For example, one connection method is that multiple battery clusters are connected in parallel to one path and then output to the energy storage electric control box. According to this connection method, only one set of high-voltage electrical modules is required in the energy storage electric control box. In this energy storage electric control box, there is not enough space in the DC high-voltage area to place more high-voltage electrical modules. If you want to change the connection method, for example, connect multiple battery clusters in parallel to two paths and then output them to the energy storage electric control box, you need to use an energy storage electric control box with two sets of high-voltage electrical modules. In addition, the connection method of connecting multiple battery clusters in parallel to form one or two outputs will cause problems such as circulation and charge-discharge barrel effect between the battery clusters, resulting in the batteries being unable to be completely discharged or fully charged. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an energy storage electric control box which is compatible with various connection modes.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is an energy storage electric control box, comprising a box body and a low-voltage control area, a distribution area and a DC high-voltage area arranged in the box body, the DC high-voltage area is used to connect with multiple battery clusters, and at least one high-voltage electrical module is arranged in the DC high-voltage area, the high-voltage electrical module includes a positive bus, a negative bus and a DC surge protection unit, the high-voltage electrical module is used to connect at least one battery cluster and at least one energy storage inverter, and the number of the high-voltage electrical modules is the same as the number of the energy storage inverters, wherein the box body is provided with a plurality of mounting parts in the DC high-voltage area, the plurality of mounting parts respectively correspond to the positive bus, the negative bus and the DC surge protection unit, and the plurality of mounting parts are used to make the high-voltage electrical module detachably fixedly connected to the box body.

[0005] In one embodiment of the present application, the number of the high-voltage electrical modules is less than the number of the battery clusters, and several battery clusters in the plurality of battery clusters are connected in parallel through the high-voltage electrical modules to form one output.

[0006] In one embodiment of the present application, the number of the high-voltage electrical modules is the same as the number of the battery clusters, each of the high-voltage electrical modules is used to connect to a battery cluster corresponding one-to-one to the high-voltage electrical module, and each of the high-voltage electrical modules is also used to connect to an energy storage inverter corresponding one-to-one to the high-voltage electrical module.

[0007] In one embodiment of the present application, the plurality of positive bus bars and the plurality of negative bus bars are arranged in multiple parallel rows or columns, and in the same row, the positive bus bars and the negative bus bars are arranged in sequence.

[0008] In one embodiment of the present application, the box body has a thickness in the DC high voltage area, and the positive busbars and negative busbars in each row are located at different positions in the direction of the thickness.

[0009] In one embodiment of the present application, the positions of the multiple rows of positive bus bars and negative bus bars in the thickness direction are closer and closer to the back side of the box body from top to bottom.

[0010] In one embodiment of the present application, in the same row, an insulating plate is disposed between adjacent positive electrode bus bars and negative electrode bus bars.

[0011] In one embodiment of the present application, the DC high voltage zone is further provided with an isolation door, a side of the isolation door close to the box is provided with an insulating member, and the isolation door is arranged on the outer side of the box corresponding to the DC high voltage zone.

[0012] In an embodiment of the present application, the DC surge protection unit includes a DC surge protector and a surge fuse.

[0013] In one embodiment of the present application, a guide rail is disposed inside the DC high voltage area, and the DC surge protection unit is disposed on the guide rail.

[0014] The energy storage control box of the present application is provided with at least one high-voltage electrical module in the DC high-voltage area, and the high-voltage electrical module is detachably fixedly connected to the box body, so that the energy storage control box can be compatible with three connection methods between battery clusters and energy storage inverters, thereby improving the application scope of the energy storage control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 It is a schematic diagram of a high-voltage output management solution for multiple battery clusters including the energy storage electric control box of the first embodiment of the present application;

[0017] Figure 2 It is a schematic diagram of a high-voltage output management solution for multiple battery clusters including the energy storage electric control box of the second embodiment of the present application;

[0018] Figure 3 It is a schematic diagram of a high-voltage output management solution for multiple battery clusters including the energy storage electric control box of the third embodiment of the present application;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the energy storage electric control box of the first embodiment of the present application;

[0020] Figure 5 It is a front view of the energy storage electric control box of the first embodiment of the present application;

[0021] Figure 6 It is a schematic diagram of the circuit structure of the DC high voltage area of ​​the first embodiment of the present application;

[0022] Figure 7 This is a back view of the energy storage electric control box of the first embodiment of the present application;

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the energy storage electric control box of the second embodiment of the present application;

[0024] Fig. 9 It is a front view of the energy storage electric control box of the second embodiment of the present application;

[0025] Fig.10 It is a back view of the energy storage electric control box of the second embodiment of the present application;

[0026] Fig.11 It is a schematic diagram of the three-dimensional structure of the energy storage electric control box of the third embodiment of the present application;

[0027] Fig.12 It is a front view of the energy storage electric control box of the third embodiment of the present application;

[0028] Fig.13 This is a back view of the energy storage electric control box of the third embodiment of the present application;

[0029] Fig.14 is along Fig.12 A sectional stereogram of line AA in FIG.

[0030] Fig.15 is along Fig.12 Sectional plan view along line AA. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and therefore the present invention is not limited to the specific embodiments disclosed below.

[0033] As shown in this application, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0034] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0035] The dimensions or positional relationships of the components shown in the drawings are sometimes exaggerated for the purpose of clarifying the description. Furthermore, in the following description, for the same names and symbols, representing the same or homogeneous components, it is appropriate to omit their detailed description. Furthermore, the various elements constituting the utility model may be in the form of a plurality of elements constituted by the same component so that one component serves as a plurality of elements, or conversely, it may be realized by a plurality of components sharing the function of one component. In addition, the contents described in some embodiments and implementation methods may also be utilized in other embodiments, implementation methods, etc. In addition, in this specification, "on" is not limited to the case where it is formed in contact with the upper surface, but also includes the case where it is formed separately on the upper surface, and is also used to include the meaning of the existence of an intervening layer between layers.

[0036] The energy storage electric control box of the present application can be used to manage multiple battery clusters, and is particularly suitable for application scenarios of container energy storage systems.

[0037] Figure 1 Schematic diagram of a high voltage output management solution for multiple battery clusters including the energy storage electric control box of the first embodiment of the present application. Figure 1As shown, a plurality of battery clusters 111 are shown, each battery cluster 111 includes a plurality of battery packs 112 connected in series. The plurality of battery clusters 111 belong to a battery stack. Each battery cluster 111 is connected to a corresponding high-voltage box 113. After passing through the high-voltage box 113, the plurality of battery clusters 111 are connected in parallel and then output to the energy storage electric control box 114. After passing through the energy storage electric control box 114, the plurality of battery clusters 111 are output to the DC side of the energy storage converter 115 (PCS). The energy storage electric control box 114 includes a group of high-voltage electrical modules, including a fuse (FU) and a surge protector (SPD). Figure 1 It is shown that multiple battery clusters 11 are connected in parallel to form a high voltage output, so this solution is called "multiple battery clusters connected in parallel to form a high voltage output solution".

[0038] Figure 2 Schematic diagram of a high voltage output management solution for multiple battery clusters including the energy storage electric control box of the second embodiment of the present application. Figure 2 As shown, multiple battery clusters 121 belong to one battery stack, and multiple battery clusters 122 belong to another battery stack. Multiple battery clusters 121 are connected in parallel as one path after passing through the high-voltage box 123, and are output to the DC side of an energy storage converter 125 after passing through a group of high-voltage electrical modules in the energy storage electric control box 124; multiple battery clusters 122 are connected in parallel as one path after passing through the high-voltage box 123, and are output to the DC side of another energy storage converter 126 after passing through another group of high-voltage electrical modules in the energy storage electric control box 124. Overall, multiple battery clusters 121 and 122 are connected in parallel as two high-voltage output paths, so this solution is called a "multi-cluster parallel two-path high-voltage output solution".

[0039] exist Figure 1 and Figure 2 In the two solutions shown, the energy storage electric control boxes 114 and 124 have the characteristics of simple architecture and low system cost, but these two solutions have problems such as inter-cluster circulation and charging and discharging barrel effect. Therefore, this application proposes a "one cluster one management high voltage output solution". Figure 3 Schematic diagram of a high voltage output management solution for multiple battery clusters including the energy storage electric control box of the third embodiment of the present application. Figure 3 As shown, multiple battery clusters 131 are shown, each battery cluster 131 includes multiple battery packs connected in series. Each battery cluster 131 is connected to a corresponding high-voltage box 133. After passing through the high-voltage box 133, each battery cluster 131 is output to the energy storage electric control box 134 as an independent path, and then output to the DC side of the energy storage converter 135 (PCS) after passing through the energy storage electric control box 134. The energy storage converter 135 here includes Figure 3In the third embodiment, each battery cluster 131 corresponds to a group of high-voltage electrical modules and an energy storage converter, so the solution is called "one cluster one management high-voltage output solution".

[0040] By using the energy storage electric control box 134 of the third embodiment and the one-cluster-one-management high-voltage output solution, high-voltage output management is performed separately for each battery cluster 131, thereby avoiding problems such as inter-cluster circulation and charging and discharging barrel effect.

[0041] This application is to expand the application scope of the energy storage electric control box so that the energy storage electric control box can be compatible with Figures 1 to 3 The three high-voltage output solutions shown provide an energy storage electric control box. The energy storage electric control boxes of embodiments one, two and three are described in detail below with reference to the accompanying drawings.

[0042] Figure 4 It is a schematic diagram of the three-dimensional structure of the energy storage electric control box of the first embodiment of the present application. Figure 4 The angle shown is the front of the energy storage control box 400 facing outward, in which some panels that may cover the front of various areas are omitted. Figure 5 This is a front view of the energy storage electric control box of the first embodiment of the present application. Figure 4 and Figure 5 As shown, the energy storage electric control box 400 includes a box body 401 and a low voltage control area 410, a power distribution area 420 and a DC high voltage area 430 arranged in sequence from top to bottom. The box body 401 is a roughly rectangular frame structure. In some embodiments, the box body 401 can be integrally formed or can be Figure 4 The split design is shown, that is, the low-voltage control area 410 and the power distribution area 420 located at the top are arranged in one frame structure, and the DC high-voltage area 430 located at the bottom is arranged in another frame structure. The two frame structures are fixedly connected to each other, and the sizes of the two frame structures can be different. Figure 4 As shown, the box 401 is defined to have a width along the X-axis direction, a thickness along the Y-axis direction, and a height along the Z-axis direction. Then the thickness and height of the two frames can be different. The frame structure of the box 401 allows it to be flexibly connected to other devices.

[0043] The low voltage control area 410 may also be referred to as a low voltage communication control area, and the power distribution area 420 may also be referred to as an AC power distribution area. In some embodiments, electrical components are arranged in the box, and the electrical components include DC high voltage electrical components, low voltage electrical components, communication control electrical components, and AC power distribution components. The DC high voltage electrical components are arranged in the DC high voltage area 430, the low voltage electrical components and the communication control electrical components are arranged in the low voltage control area 410, and the AC power distribution components are arranged in the power distribution area 420. The high voltage electrical module mentioned below belongs to the module in the high voltage electrical components.

[0044] like Figure 5 As shown, a high voltage electrical module is provided in the DC high voltage area 430, and the high voltage electrical module includes a positive bus 511, a negative bus 512 and a DC surge protection unit 610, combined with Figure 1 , multiple battery clusters are connected in parallel to form one output through the high-voltage electrical module, and the output is connected to one energy storage converter 115. Specifically, the positive electrodes of multiple battery clusters are connected to the positive bus 511, thereby being connected in parallel to form one positive bus, which is then connected to the energy storage converter 115; the negative electrodes of multiple battery clusters are connected to the negative bus 512, thereby being connected in parallel to form one negative bus, which is then connected to the energy storage converter 115. At the same time, the positive bus and the negative bus are also grounded through the DC surge protection unit 610, thereby being protected by the DC surge protection unit 610. Figure 6 A circuit diagram for representing multiple battery clusters connected in parallel and then output to an energy storage converter. When switch 1131 is turned on, the positive poles of each battery cluster 111 can be connected in parallel and connected to the P+ terminal of the energy storage converter PCS, and when switch 1132 is turned on, the negative poles of each battery cluster 111 can be connected in parallel and connected to the P- terminal of the energy storage converter PCS. At the same time, the positive poles connected in parallel are also grounded through the DC surge protector 1141 and the surge fuse 1143, and the negative poles connected in parallel are also grounded through the DC surge protector 1142 and the surge fuse 1143.

[0045] In the first embodiment, the number of high-voltage electrical modules is the same as the number of energy storage converters, which is 1. The box 401 is provided with a plurality of mounting parts in the DC high-voltage area 430, and the plurality of mounting parts correspond to the positive bus 511, the negative bus 512 and the DC surge protection unit 610, respectively, and the plurality of mounting parts are used to make the high-voltage electrical module detachably fixedly connected to the box 401. In some embodiments, the mounting parts include an access panel, and the positive bus 511 and the negative bus 512 can be mounted and fixed on the access panel, and the access panel is detachably connected to the inner wall of the box 401.

[0046] Figure 7 1 is a back view of the energy storage electric control box of the first embodiment of the present application. Figure 4 , Figure 5 and Figure 7As shown, the positive busbar 511 and the negative busbar 512 are both L-shaped plate structures, wherein one side of the L-shape is used to fix it on the frame of the box 401, and the mounting parts corresponding to the positive busbar 511 and the negative busbar 512 can be fastening screws, and some fixing plates 4011 with mounting holes can be provided on the frame of the box 401, and the positive busbar 511 and the negative busbar 512 can be fixed on the fixing plates 4011 through fastening screws and mounting holes. A guide rail 620 is also provided in the box 401, and the DC surge protection unit 610 can be provided on the guide rail 620, and the guide rail 620 is fixed to the box 401 through mounting parts such as fastening screws. By providing the mounting parts, the high-voltage electrical module is detachably connected to the box 401. Among them, the position of the DC surge protection unit 610 on the guide rail 620 can be flexibly adjusted, so as to facilitate wiring. After the position is determined, the DC surge protection unit 610 is locked by a locking member. When the position needs to be changed, the locking member is released and the position of the DC surge protection unit 610 on the guide rail 620 is adjusted.

[0047] Further, refer to Figure 4 and Figure 7 There are multiple wiring holes on the positive bus 511, the models are M16 and M10, which are shown as Figure 7 There are several large holes (M16) and small holes (M10) in the negative busbar 512; there are multiple wiring holes, the models are M16 and M10, which are shown as Figure 7 There are several large holes (M16) and small holes (M10) in it. Among them, the M10 hole is connected to the DC bus of the battery cluster 111, and the M16 is connected to the DC bus of the energy storage converter 115. This embodiment 1 corresponds to the situation where 6 battery clusters are connected in parallel as one output. Therefore, there are 6 M16 and M10 on the positive bus 511 and the negative bus 512 respectively. The DC surge protection unit 610 includes a DC surge protector and a surge fuse, and has an overvoltage protection module to realize the overvoltage protection function. The DC surge protection unit 610 is arranged above the positive bus 511 and the negative bus 512.

[0048] Figure 8 It is a schematic diagram of the three-dimensional structure of the energy storage electric control box of the second embodiment of the present application. Figure 8 Some structures in the embodiment are the same as those in the first embodiment, so the same reference numerals are used, such as the energy storage electric control box 400 and the box body 401. For related descriptions, reference can be made to the descriptions in the first embodiment. Compared with the first embodiment, the high-voltage electrical module in the second embodiment is different. Fig. 9 It is a front view of the energy storage electric control box of the second embodiment of the present application. Fig.10 This is a back view of the energy storage electric control box of the second embodiment of the present application. Figure 8 to Figure 10The energy storage electric control box 400 of the second embodiment is provided with two high-voltage electrical modules in the DC high-voltage area of ​​the box body 401, wherein the first high-voltage electrical module includes a first positive bus 521, a first negative bus 522 and a first DC surge protection unit 611, and the second high-voltage electrical module includes a second positive bus 531, a second negative bus 532 and a second DC surge protection unit 612. Figure 2 In the second embodiment, two high-voltage electrical modules are provided, each of which is used to connect multiple battery clusters in parallel into one output, which is connected to the energy storage converter 125 or the energy storage converter 126. Specifically, the positive and negative electrodes of the multiple battery clusters 121 are respectively connected to the first positive bus 521 and the first negative bus 522, and then connected to the energy storage converter 125, and the positive and negative electrodes of the multiple battery clusters 121 are also respectively grounded through the first DC surge protection unit 611; the positive and negative electrodes of the multiple battery clusters 122 are respectively connected to the second positive bus 531 and the second negative bus 532, and then connected to the energy storage converter 126, and the positive and negative electrodes of the multiple battery clusters 122 are also respectively grounded through the second DC surge protection unit 612.

[0049] Similar to the first embodiment, the DC surge protection units in the two high-voltage electrical modules are both arranged on the guide rail 620. When used in conjunction with the "multi-cluster parallel two-way high-voltage output solution", multiple mounting members can be used to mount the two high-voltage electrical modules in the DC high-voltage area.

[0050] Fig.11 It is a three-dimensional structural schematic diagram of the energy storage electric control box of Example 3 of the present application. Fig.11 Some structures in the embodiment 1 and 2 are the same, so the same reference numerals are used, such as the energy storage electric control box 400 and the box body 401. For related descriptions, reference can be made to the descriptions in the embodiments 1 and 2. Compared with the embodiments 1 and 2, the high-voltage electrical module in the embodiment 3 is different. Fig.12 It is a front view of the energy storage electric control box of the third embodiment of the present application. Fig.13 This is a back view of the energy storage electric control box of the third embodiment of the present application. Figure 11 to Figure 13 The number of high-voltage electrical modules in the third embodiment is the same as the number of battery clusters, and each high-voltage electrical module is used to connect to a battery cluster corresponding to the high-voltage electrical module, and each high-voltage electrical module is also used to connect to an energy storage converter corresponding to the high-voltage electrical module. Figure 3 , which includes 12 battery clusters. Therefore, in the third embodiment, there are 12 high-voltage electrical modules. Take one of them as an example. Fig.12Each high-voltage electrical module includes a positive busbar 541, a negative busbar 542 and a DC surge protection unit 613. Therefore, the DC high-voltage area includes 12 positive busbars 541, 12 negative busbars 542 and 12 DC surge protection units 613. Specifically, the positive and negative electrodes of a battery cluster 131 are respectively connected to a positive busbar 541 and a negative busbar 542, and then connected to an energy storage converter, and the positive and negative electrodes of the battery cluster 131 are also grounded through a DC surge protection unit 613.

[0051] Due to limited space, in the third embodiment, Fig.12 As shown, 12 positive busbars 541 and 12 negative busbars 542 are arranged in 3 rows extending in the horizontal direction, each row includes 4 positive busbars 541 and 4 negative busbars 542, and the positive busbars 541 and negative busbars 542 in the same row are arranged in sequence, that is, one positive busbar 541 is next to one negative busbar 542, and they are arranged alternately. From the vertical direction, 3 positive busbars 541 are arranged in a row, and 3 negative busbars 542 are arranged in a row. Similar to the first and second embodiments, each positive busbar 541 and negative busbar 542 is provided with 2 connection holes, which are respectively used to connect the DC bus of the corresponding battery cluster and the DC bus of the corresponding energy storage converter. Reference Fig.11 For each positive busbar 541 and each negative busbar 542, the positions of the two connection holes thereon in the box body 401 are different. Fig.11 Taking the positive bus bar 541 in the example, one connection hole 5411 is on the inner side, and the other connection hole 5412 is on the outer side, so that the connection lines can be clearly separated to avoid cross-wires.

[0052] It should be noted that, due to the large number of DC surge protection units 613, multiple rails may be provided in the box 401 for arranging the DC surge protection units 613. In the third embodiment, two rails 621 and 622 are provided in the box 401, each for arranging six DC surge protection units 613.

[0053] Fig.14 Yes and Fig.15 All along Fig.12 The cross-sectional view of the AA line in FIG. Fig.14 and Fig.15As shown, the box body 401 has a thickness in the Y-axis direction in the DC high voltage area, and the positions of each row of positive busbars 541 and negative busbars 542 in the thickness direction are different to avoid wiring interference. Specifically, there are three rows of positive busbars 541 and negative busbars 542 in the third embodiment, and the first row 721, the second row 722, and the third row 723 are arranged in sequence from top to bottom in the height direction of the energy storage electric control box, that is, the position on the Z axis, and in the thickness direction, that is, the position on the Y axis is closer and closer to the back side 402 of the box body 401 from top to bottom, so that multiple rows of positive busbars 541 and negative busbars 542 are stepped in the vertical direction. The advantage of this arrangement is that the wiring corresponding to different rows can be clearly distinguished during wiring, avoiding wrong wiring, and it is also beneficial to prevent interference between multiple wires.

[0054] refer to Fig.13 Three crossbeams 731, 732, 733 are provided on the back of the box 401, respectively used to fix three rows of positive busbars 541 and negative busbars 542. The crossbeams 731, 732, 733 are mounting parts, used to detachably mount the positive busbars 541 and the negative busbars 542. Fig.13 It is not used to limit the number and specific positions of the beams 731, 732, and 733, and can be set according to actual needs. Fig.14 and Fig.15 The positions of the cross beams 731, 732, 733 on the frame of the box 401 are gradually approached to the back side 402 of the box 401. Both ends of each cross beam 731, 732, 733 can be fixedly set on the frame of the box 401. The depth of each row of positive busbars 541 and negative busbars 542 inside the box 401 can be conveniently adjusted by setting the positions of the cross beams 731, 732, 733 inside the box 401. The insulating plate 710 can also be installed on the cross beams 731, 732, 733.

[0055] refer to Fig.11 and Fig.14 In the third embodiment, in the same row, an insulating plate 710 is provided between adjacent positive busbars 541 and negative busbars 542 to insulate the adjacent positive busbars 541 and negative busbars 542 from each other to avoid leakage or short circuit.

[0056] Exemplarily, the insulating plate 710 is a roughly rectangular plate, and its size should be such that the positive bus 541 and the negative bus 542 on both sides thereof are covered and shielded by the insulating plate 710, so that after the wiring is completed, the electrical gap between adjacent wire clusters remains above 30 mm, wherein the electrical gap refers to the distance of the shortest path in the air between two electrical components. For example, the positive lead of a battery cluster is connected to a positive bus 541, and the contact hole of the positive lead on the positive bus 541 has contact point one, and its negative lead is connected to the adjacent negative bus 542, and the contact hole of the negative lead on the negative bus 542 has contact point two. The shortest path in the air from contact point one to contact point two is from contact point one, through one surface and another surface of the insulating plate 710, and then to contact point two. The length of this path should be maintained above 30 mm. Fig.14 It can be clearly seen that the projection of the insulating plate 710 along the X-axis direction covers the positive electrode bus bar 541 and the negative electrode bus bar 542 behind it.

[0057] Furthermore, the material of the insulating plate 710 may be resin. In a specific embodiment, the material of the insulating plate 710 is phenolic resin and glass fiber.

[0058] refer to Fig.14 and Fig.15 In the third embodiment, the DC surge protection unit 613 includes a DC surge protector 6131 and a surge fuse 6132, wherein the surge fuse 6132 is arranged behind the DC surge protector 6131, and the two correspond one to one. It should be noted that the surge fuse 6132 is specifically a surge backup fuse. Fig.15 As shown, in the two rows of DC surge protection units 613, the DC surge protectors 6131 in the first row located at the top and the second row located at the bottom have the same depth on the Y axis, both are close to the front 403 of the box 401, and the surge fuses 6132 in the first row of DC surge protection units 613 are closer to the front 403 than the surge fuses 6132 in the second row of DC surge protection units 613. The benefit of this arrangement is also to facilitate wiring and avoid wiring crosstalk. As described above, the leads of the battery cluster pass through the bus bar and then connect to the DC surge protector 6131, and then connect to the surge fuse 6132 and then ground.

[0059] refer to Fig.11As shown, a door plate reinforcement rib 530 is also shown, which is rectangular in shape. In some embodiments, an isolation door (not shown) is also provided on the outside of the DC high-voltage area, and the isolation door is arranged at a position corresponding to the high-voltage electrical module, and the door plate reinforcement rib 530 is arranged on the inner side of the isolation door. In some embodiments, an insulating member is provided on the isolation door, and the insulating member is also arranged on the inner side of the isolation door, and is arranged toward the inside of the box body 401, so that when the isolation door is closed, the positive bus and the negative bus can be locked inside, which plays a better isolation and protection role. In one embodiment, the insulating member is an insulating plate body, which is attached to the inner side of the isolation door, and its size can cover all the positive bus, negative bus and high-voltage electrical module. Further, after the battery cluster is connected to the high-voltage electrical module, the cables are gathered to the cable trench at the bottom of the energy storage electric control box 400, and then connected to the energy storage converter. The isolation door is used to isolate the energy storage electric control box 400 and the energy storage converter, so that the DC high-voltage area is in a relatively closed and insulated environment to ensure the safe operation of the device.

[0060] It should be noted that the positive busbar and the negative busbar in the above embodiments can both be copper busbars.

[0061] refer to Figure 5 In an embodiment of the present application, a three-level BMS, a time delay relay, a switch module, a display screen 411, etc. can be set in the low-voltage control area 410, and a transformer 421, an uninterruptible power supply system 422, a circuit breaker 423 and a fire protection module, etc. can be set in the distribution area 420.

[0062] According to the energy storage control box 400 of the present application, high-voltage electrical modules corresponding to three different schemes can be flexibly arranged in the DC high-voltage area, so that one energy storage control box 400 can be compatible with three different connection schemes, namely: "Multi-cluster parallel one-way high-voltage output scheme", "Multi-cluster parallel two-way high-voltage output scheme" and "One cluster one-management high-voltage output scheme", so that users can configure the DC high-voltage area according to actual needs, thereby improving the utilization rate and versatility of the energy storage control box 400. The schemes of embodiments one and two have the advantages of simple structure and low system cost. The one-cluster one-management high-voltage output scheme of embodiment three can avoid problems such as inter-cluster circulation and charging and discharging barrel effect. Users can choose the optimal solution according to their needs based on the energy storage control box 400 of the present application without replacing the control box.

[0063] Although the above disclosure discusses some currently considered useful utility model embodiments through various examples, it should be understood that such details are only for illustrative purposes and are not limited to the disclosed embodiments. On the contrary, it is intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the utility model embodiments. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0064] Similarly, it should be noted that in order to simplify the description of the utility model disclosure and thus facilitate the understanding of one or more utility model embodiments, in the above description of the utility model embodiments, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the utility model object requires more features than the mentioned features. In fact, the features of the embodiment are less than all the features of the single embodiment disclosed above.

[0065] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of the scope of the utility model in some embodiments are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

Claims

1. An energy storage electric control box, characterized in that: It includes a box body and a low-voltage control area, a distribution area and a DC high-voltage area arranged in the box body, the DC high-voltage area is used to connect with multiple battery clusters, at least one high-voltage electrical module is arranged in the DC high-voltage area, the high-voltage electrical module includes a positive bus, a negative bus and a DC surge protection unit, the high-voltage electrical module is used to connect at least one battery cluster and at least one energy storage inverter, the number of the high-voltage electrical modules is the same as the number of the energy storage inverters, wherein the box body is provided with a plurality of mounting parts in the DC high-voltage area, the plurality of mounting parts respectively correspond to the positive bus, the negative bus and the DC surge protection unit, and the plurality of mounting parts are used to make the high-voltage electrical module detachably fixedly connected to the box body.

2. The energy storage electric control box according to claim 1, characterized in that: The number of the high-voltage electrical modules is less than the number of the battery clusters, and several battery clusters in the plurality of battery clusters are connected in parallel through the high-voltage electrical modules to form one output.

3. The energy storage electric control box according to claim 1, characterized in that: The number of the high-voltage electrical modules is the same as the number of the battery clusters. Each of the high-voltage electrical modules is used to connect to a battery cluster corresponding one-to-one to the high-voltage electrical module. Each of the high-voltage electrical modules is also used to connect to an energy storage inverter corresponding one-to-one to the high-voltage electrical module.

4. The energy storage electric control box according to claim 3, characterized in that: The plurality of positive bus bars and the plurality of negative bus bars are arranged in a plurality of rows or columns parallel to each other, and in the same row, the positive bus bars and the negative bus bars are arranged in sequence.

5. The energy storage electric control box according to claim 4, characterized in that: The box body has a thickness in the DC high voltage region, and the positive busbars and the negative busbars in each row are located at different positions in the direction of the thickness.

6. The energy storage electric control box according to claim 5, characterized in that: The positions of the multiple rows of positive electrode bus bars and negative electrode bus bars in the thickness direction are closer and closer to the back side of the box body from top to bottom.

7. The energy storage electric control box according to claim 4, characterized in that: Insulating plates are provided between adjacent positive electrode bus bars and negative electrode bus bars in the same row.

8. The energy storage electric control box according to claim 1, characterized in that: The DC high voltage area is also provided with an isolation door, a side of the isolation door close to the box body is provided with an insulating member, and the isolation door is arranged on the outer side of the box body corresponding to the DC high voltage area.

9. The energy storage electric control box according to claim 1, characterized in that: The DC surge protection unit includes a DC surge protector and a surge fuse.

10. The energy storage electric control box according to claim 1, characterized in that: A guide rail is arranged inside the DC high voltage area, and the DC surge protection unit is arranged on the guide rail.

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