A high-voltage control box

Abstract

This utility model discloses a high-voltage control box, relating to the field of energy storage technology. It includes a box body with a support plate inside along its thickness direction. A first set of main circuit devices is arranged on the inner wall of the bottom plate along the thickness direction of the box body. A second set of main circuit devices is arranged at the end of the support plate opposite to the bottom plate. A power terminal group is arranged on the front panel of the box body. The power terminal group, the first set of main circuit devices, and the second set of main circuit devices are connected to form a high-voltage main circuit. This high-voltage control box arranges the positive and negative terminal groups vertically along the thickness direction of the box body, which can better accommodate large-size devices to meet the requirements of large electrical capacity, while also saving internal space and minimizing the size of the high-voltage control box.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and more specifically, to a high-voltage control box. Background Technology

[0002] Energy storage systems require the transmission and distribution of stored electrical energy between different devices and components. High-voltage control boxes play a crucial role in this process, enabling power transmission at higher voltage levels to reduce energy loss and improve transmission efficiency. For example, in large-scale energy storage power plants, high-voltage control boxes can integrate power from multiple energy storage battery packs and distribute it to the grid or specific loads as needed. This ensures efficient energy flow throughout the entire energy storage system, meeting the demands of various application scenarios. With rapid technological advancements and increasing electricity demand, the application of large-capacity high-voltage control boxes is becoming increasingly widespread.

[0003] In the existing technology, conventional high-voltage control boxes are often suitable for high-voltage control boxes with small current (such as around 250A). If the current is increased, the specifications of the components inside the high-voltage control box will change and increase, resulting in a larger size of the high-voltage control box, which in turn increases the manufacturing cost of the high-voltage control box. It also increases the space required to place the battery clusters in the high-voltage control box. Standard battery clusters are not compatible with high-current high-voltage control boxes, and special processing of battery clusters is required. This results in too many product types, which is not conducive to product category management and economic costs.

[0004] Therefore, how to provide a small-sized, high-capacity high-voltage control box is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a high-voltage control box in which the positive and negative electrode groups are arranged vertically along the thickness of the box body, which can better accommodate large-sized devices to meet the requirements of large electrical capacity, while also saving internal space and minimizing the size of the high-voltage control box.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A high-voltage control box includes a box body, an internal support plate in the thickness direction of the box body, a first set of main circuit devices on the inner wall of the bottom plate in the thickness direction of the box body, a second set of main circuit devices on the end of the support plate facing away from the bottom plate, and a power terminal group on the front panel of the box body. The power terminal group, the first set of main circuit devices and the second set of main circuit devices are connected to form a high-voltage main circuit.

[0007] Preferably, the first group of main circuit devices includes a main circuit breaker, a first-pole shunt, a first-pole diode, and two first-pole main contactors; the second group of main circuit devices includes a second-pole fuse, a Hall sensor, a second-pole diode, and two second-pole main contactors; the power terminal group includes a battery first terminal, a battery second terminal, a PCS first terminal, and a PCS second terminal; The main circuit breaker is a four-pole main circuit breaker, which has four electrodes. Every two electrodes are connected in parallel to form a first pole or a second pole. The first terminal of the battery, the first terminal of the main circuit breaker, and the first terminal shunt are sequentially electrically connected. The first terminal diode and the two first terminal main contactors are connected in parallel and electrically connected between the first terminal shunt and the first terminal of the PCS to form a high-voltage first terminal circuit. The second terminal of the battery, the second terminal of the main circuit breaker, the second terminal fuse, and the Hall sensor are sequentially electrically connected. The second terminal diode and the two second terminal main contactors are connected in parallel and electrically connected between the second terminal fuse and the second terminal of the PCS to form a high-voltage second terminal circuit.

[0008] Preferably, the interior of the enclosure is provided with a high-voltage DC main switch connected to the high-voltage main circuit, and the panel is provided with a high-voltage DC switch handle electrically connected to the high-voltage DC main switch.

[0009] Preferably, a gap of one is left between the support plate and the panel along the length of the housing, and the high-voltage DC main switch and the main circuit breaker are stacked sequentially on the inner wall of the bottom plate in the gap of one along the direction from the bottom plate to the top plate.

[0010] Preferably, the interior of the enclosure is provided with a DC switching power supply for powering low-voltage devices, and the panel is provided with a DC power supply switch that is electrically connected to the DC switching power supply.

[0011] Preferably, a gap of two is left between the support plate and the side plate of the housing opposite to the panel along the length of the housing. The DC switching power supply is located at the end of the support plate facing away from the bottom plate and adjacent to the gap of two. The inner wall of the bottom plate is provided with a relay located below the DC switching power supply. The inner wall of the side plate of the housing opposite to the panel is provided with a main control module and an AC switching power supply.

[0012] Preferably, the top plate in the thickness direction of the box body is detachable, and the inner walls of the two side plates in the width direction of the box body are provided with two support members facing each other. The two support members abut against the support plate, and the two side plates in the width direction of the box body are provided with fastening holes on the side of the support members. The fastening holes are for fasteners to pass through to fasten the support plate.

[0013] Preferably, both side plates in the width direction of the box are provided with a plurality of fastening holes, and the plurality of fastening holes are arranged at intervals along the length direction of the box; The support member includes at least two protrusions, which are spaced apart along the length of the housing and located adjacent to the bottom of a row of fastening holes.

[0014] Preferably, the two side panels in the width direction of the box body are integrally formed with one side panel in the length direction of the box body to form a U-shaped bracket, and the other side panel in the length direction of the box body is the panel. The panel is detachably provided on the opening side in the length direction of the U-shaped bracket, and the top plate and bottom plate in the thickness direction of the box body are detachably provided on the two opening sides in the thickness direction of the U-shaped bracket.

[0015] Preferably, at least one plate in the U-shaped bracket is provided with multiple heat dissipation holes.

[0016] This utility model provides a high-voltage control box with a support plate inside the box in the thickness direction. The main circuit components can be divided into two groups. The first group of main circuit components is set on the inner wall of the bottom plate of the box, and the second group of main circuit components is set on the end of the support plate facing away from the bottom plate (i.e., the top surface of the support plate). In other words, multiple main circuit components are stacked vertically in the thickness direction of the box to make full use of the space in the thickness direction of the box. This allows for better adaptation to large-size components to meet the requirements of bearing large electrical capacity, while also saving internal space and minimizing the size of the high-voltage control box. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of a high-voltage control box provided by this utility model; Figure 2 A partial schematic diagram of a high-voltage control box provided by this utility model. Figure 1 ; Figure 3A top view of a high-voltage control box provided by this utility model after removing the top plate; Figure 4 for Figure 1 A schematic diagram at point AA; Figure 5 This is a schematic diagram of the panel structure provided by this utility model; Figure 6 A partial schematic diagram of a high-voltage control box provided by this utility model. Figure 2 .

[0019] A structural diagram of specific embodiment five.

[0020] Figure label: 1-Enclosure; 2-Front panel; 3-Base plate; 4-U-shaped bracket; 5-Protrusion; 6-Fastening hole; 7-Heat dissipation hole; 8-Support plate; 9-Main circuit breaker; 10-First pole shunt; 11-First pole diode; 12-First pole main contactor; 13-High voltage DC main switch; 14-High voltage DC switch handle; 15-Second pole fuse; 16-Hall sensor; 17-Second pole diode; 18-Second pole main contactor; 19-DC switching power supply; 20-DC power supply switch; 21-Relay; 22-Small diode; 23-Main control module; 24-Battery first terminal; 25-Battery second terminal; 26-PCS first terminal; 27-PCS second terminal; 28-AC switching power supply. Detailed Implementation

[0021] 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.

[0022] The core of this utility model is to provide a high-voltage control box, in which the positive and negative electrode groups are arranged vertically along the thickness of the box body, which can better accommodate large-sized devices to meet the requirements of large electrical capacity, while also saving internal space and minimizing the size of the high-voltage control box.

[0023] It should be noted that in this embodiment, the orientation or positional relationship indicated by "left", "right", "front", "back", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on this application.

[0024] Please refer to Figure 1 and Figure 2 This application provides an embodiment of a high-voltage control box, including a box body 1. The inside of the box body 1 is provided with a support plate 8 in the thickness direction. The inner wall of the bottom plate 3 in the thickness direction of the box body 1 is provided with a first set of main circuit devices. The end of the support plate 8 facing away from the bottom plate 3 is provided with a second set of main circuit devices. The panel 2 of the box body 1 is provided with a power terminal group. The power terminal group, the first set of main circuit devices and the second set of main circuit devices are connected to form a high-voltage main circuit.

[0025] As can be seen from the above embodiments, the main circuit devices can be divided into two groups. The first group of main circuit devices is set on the inner wall of the bottom plate 3 of the enclosure 1, and the second group of main circuit devices is set on the end of the support plate 8 facing away from the bottom plate 3 (i.e., the top surface of the support plate 8). In other words, multiple main circuit devices are stacked vertically in the thickness direction of the enclosure 1 to make full use of the space in the thickness direction of the enclosure 1, so as to better adapt to large-size devices, meet the requirements of bearing large electrical capacity, and save internal space, thereby reducing the size of the high-voltage control box as much as possible.

[0026] Preferably, the panel 2 is located on one side of the enclosure 1 along its length (i.e., the front side of the enclosure 1). The panel 2 is equivalent to the front panel of the enclosure 1, which is conducive to the centralized setting of the power terminal group, avoiding dispersion, and facilitating centralized control and wiring by the user.

[0027] Based on the above embodiments, as a further preferred option, please refer to... Figure 3 and Figure 4 The first group of main circuit components includes a main circuit breaker 9, a first-pole shunt 10, a first-pole diode 11, and two first-pole main contactors 12; the second group of main circuit components includes a second-pole fuse 15, a Hall sensor 16, a second-pole diode 17, and two second-pole main contactors 18. This arrangement allows the main circuit components to be grouped according to their electrical path in the high-voltage main circuit. For example, in a specific embodiment, the first group of main circuit components mainly includes the negative-pole components in the main circuit and is centrally arranged on the inner wall of the bottom plate 3 of the housing 1; the second group of main circuit components mainly includes the positive-pole components in the main circuit and is centrally arranged on the support plate 8. This division method is orderly and reasonable, facilitating the arrangement of copper busbars to conduct the components and avoiding excessively long copper busbars that would lead to waste. It should be noted that the following explanation uses the example of "first pole" referring to the negative pole and "second pole" referring to the positive pole.

[0028] Furthermore, considering the specific connection methods between the two sets of main circuit devices and the power terminal group, please refer to the following in this embodiment: Figure 3 , Figure 4 and Figure 5The power terminal block includes a battery first terminal 24, a battery second terminal 25, a PCS first terminal 26, and a PCS second terminal 27. The battery first terminal 24, the first terminal of the main circuit breaker 9, and the first terminal shunt 10 are sequentially electrically connected. The first terminal diode and two first terminal main contactors 12 are connected in parallel and electrically connected between the first terminal shunt 10 and the PCS first terminal 26 to form a high-voltage first terminal circuit (i.e., a high-voltage negative terminal circuit). The battery second terminal 25, the second terminal of the main circuit breaker 9, the second terminal fuse 15, and the Hall sensor 16 are sequentially electrically connected. The second terminal diode and two second terminal main contactors 18 are connected in parallel and electrically connected between the second terminal fuse 15 and the PCS second terminal to form a high-voltage second terminal circuit (i.e., a high-voltage positive terminal circuit). All components are electrically connected via copper busbars. The wiring of the copper busbars is designed according to the component placement; for example, straight copper busbars, right-angle copper busbars, oblique copper busbars, and vertical copper busbars can be used in combination.

[0029] It should be noted that the aforementioned main circuit breaker 9 is a four-pole main circuit breaker 9. The four-pole main circuit breaker 9 has four electrodes, and every two electrodes are connected in parallel to form the first or second pole. For example, using a 600A four-pole main circuit breaker 9, two of its electrodes are connected in parallel through a busbar to form the negative pole, and the other two electrodes are connected in parallel through a busbar to form the positive pole, which can meet the capacity requirement of about 1250A.

[0030] In addition, the high-voltage main circuit has two positive contactors connected in parallel and two negative contactors connected in parallel. For example, using two 750A contactors connected in parallel can meet a capacity requirement of about 1250A.

[0031] Therefore, the devices in the high-voltage control box provided in this application adopt a parallel bus configuration, which can meet the large-capacity requirements without using large-specification capacity devices, ensuring efficient flow of electrical energy throughout the energy storage system and meeting the needs of different application scenarios. In addition, diodes are also added to the high-voltage main circuit, utilizing the unidirectional conductivity of the diodes to protect the contactors, thereby protecting the stable power transmission of the entire high-voltage main circuit.

[0032] Based on the above embodiments, as a further preferred option, please refer to... Figure 4 and Figure 5 The interior of the housing 1 is equipped with a high-voltage DC main switch 13 connected to the high-voltage main circuit, and the panel 2 is equipped with a high-voltage DC switch handle 14 that is electrically connected to the high-voltage DC main switch 13.

[0033] In a specific embodiment, the high-voltage DC main switch 13 can be connected between the BAT- terminal and the negative terminal of the main circuit breaker 9. The high-voltage DC main switch 13 is also connected to the high-voltage DC switch handle 14. The user can control the high-voltage DC switch handle 14 to control the opening and closing of the high-voltage DC main switch 13, thereby controlling the on / off state of the high-voltage main circuit and realizing the start / stop control of high-voltage power transmission. It should be noted that the panel 2 is also equipped with communication terminals for connecting to an external monitoring system or host computer, and AC power terminals for supplying power to the high-voltage main circuit devices.

[0034] Based on the above embodiments, as a further preferred embodiment, a gap of one is left between the support plate 8 and the panel 2 along the length direction of the housing 1, and the high voltage DC main switch 13 and the main circuit breaker 9 are stacked sequentially on the inner wall of the bottom plate 3 in the gap of one along the direction from the bottom plate 3 to the top plate.

[0035] As mentioned above, the first-pole shunt 10 on the base plate 3 and the second-pole fuse 15 on the support plate 8 need to be connected to the two poles of the main circuit breaker 9, respectively. Therefore, a gap of one is left between the support plate 8 and the panel 2 along the length of the enclosure 1, so that the main circuit breaker 9 can be placed in the gap one, so that the two poles of the main circuit breaker 9 can be connected to the first-pole shunt 10 and the second-pole fuse 15, respectively, so that the main circuit breaker 9 can be connected to the high-voltage main circuit, avoiding the support plate 8 being too long and obstructing the main circuit breaker 9 from being connected to the main circuit. In addition, the high-voltage DC main switch 13 and the main circuit breaker 9 are stacked sequentially along the direction from the base plate 3 to the top plate, which can make full use of the space in the thickness direction of the enclosure 1, further saving internal space and further reducing the size of the high-voltage control box.

[0036] Furthermore, a second diode and two second-pole main contactors 18 are mounted on the top surface of the support plate 8. One end of the second-pole fuse 15 is connected to the second pole of the main circuit breaker 9 via a copper busbar one, and the other end of the second-pole fuse 15 is connected to one end of the Hall sensor 16 via a copper busbar two. The other end of the Hall sensor 16 is connected to the second diode via a copper busbar three. Thus, with the main circuit breaker 9 and the second diode fixed, the second-pole fuse 15 and the Hall sensor 16 can be mounted using the copper busbars. This configuration further shortens the length of the support plate 8, saves costs, and facilitates installation.

[0037] Based on the above embodiments, as a further preferred option, please refer to... Figure 3 and Figure 5 The enclosure 1 is equipped with a DC switching power supply 19 for powering low-voltage devices, and the panel 2 is equipped with a DC power supply switch 20 that is electrically connected to the DC switching power supply 19.

[0038] It should be noted that the DC switching power supply 19 supplies power to the low-voltage components (such as relay 21 and main control module 23) inside the enclosure 1, and is not connected in series in the high-voltage main circuit. A DC power supply switch 20 is added to the panel 2. The DC power supply switch 20 is connected to the DC switching power supply 19 inside the enclosure 1 through a wire, adding a high-voltage DC control circuit to control the on / off state of the DC switching power supply 19. Users can control the DC power supply switch 20 to achieve start and stop control of low-voltage power transmission.

[0039] Based on the above embodiments, as a further preferred option, please refer to... Figure 3 and Figure 4 A gap of two is left between the support plate 8 and the side panel of the enclosure 1 opposite to the panel 2 (i.e., the rear side panel of the enclosure 1) along the length of the enclosure 1. The DC switching power supply 19 is located at the end of the support plate 8 facing away from the bottom plate 3 and adjacent to the gap of two. The inner wall of the bottom plate 3 is provided with a relay 21 located below the DC switching power supply 19. The inner wall of the side panel of the enclosure 1 opposite to the panel 2 is provided with a main control module 23 and an AC switching power supply 28.

[0040] In this configuration, the DC switching power supply 19, relay 21, and main control module 23 are concentrated at the rear of the enclosure 1, which shortens the power cable path and simplifies wiring. Furthermore, the DC switching power supply 19 is mounted on the support plate 8, above the relay 21 and main control module 23. This facilitates heat dissipation for the DC switching power supply 19, preventing heat accumulation at the bottom of the enclosure 1. Additionally, the stacked arrangement fully utilizes the space along the thickness of the enclosure 1, saving space. Moreover, it should be noted that a gap of two is maintained between the support plate 8 and the rear panel of the enclosure 1 along the length of the enclosure 1 to allow for wiring between the DC switching power supply 19, relay 21, and main control module 23.

[0041] A small diode 22 is provided on the side of the relay 21. The small diode 22 is connected in parallel across the two ends of the relay 21 coil. The unidirectional conductivity of the diode is used to protect the relay 21 and release the self-induced electromotive force generated when the relay 21 coil is de-energized.

[0042] The function of the AC switching power supply 28 is to provide high-voltage AC power to high-power devices (such as contactors) inside the enclosure 1.

[0043] Based on the above embodiments, as a further preferred embodiment, the top plate in the thickness direction of the box body 1 is detachable, and the inner walls of the two side plates in the width direction of the box body 1 are provided with two support members facing each other. The two support members abut against the support plate 8, and the two side plates in the width direction of the box body 1 are provided with fastening holes 6 on the side of the support members. The fastening holes 6 allow fasteners to pass through to fasten the support plate 8.

[0044] In this configuration, when assembling the main circuit components, the first set of main circuit components is first installed on the bottom plate 3 of the housing 1. Then, the second set of main circuit components can be installed on the support plate 8 outside the housing 1, and then placed on the two support members along with the support plate 8. At this time, the worker does not need to hold the support plate 8 with both hands; one hand is sufficient. Even if the support members are secure, manual support of the support plate 8 is not required. Finally, fasteners (such as screws or bolts) are used to connect to the support plate 8 through the fastening holes 6, thus completing the assembly of the support plate 8 and the components on it. Then, the top plate is installed. It should be noted that the process of disassembling and assembling the main circuit components is the reverse of the above assembly process. Therefore, in this embodiment, only one worker is needed to disassemble and assemble the main circuit components inside the housing 1, saving labor costs and making disassembly and assembly convenient.

[0045] Based on the above embodiments, as a further preferred option, please refer to... Figure 6 The two side panels (i.e., the left side panel and the right side panel) of the box body 1 in the width direction are provided with multiple fastening holes 6, and the multiple fastening holes 6 are arranged at intervals along the length direction of the box body 1; the support member includes at least two protrusions 5, and the at least two protrusions 5 are arranged at intervals along the length direction of the box body 1 and are located adjacent to the bottom of a row of fastening holes 6.

[0046] Increasing the number of fastening holes 6 and protrusions 5 improves the structural stability of the support plate 8, ensuring its secure installation and thus enhancing the safety and reliability of the high-voltage control box. Furthermore, the arrangement of fasteners and protrusions 5 along the length of the box 1 ensures the support plate 8 is horizontal, reducing the risk of tilting and further guaranteeing its stability. A row of fastening holes 6 is positioned above a row of protrusions 5, preventing the support plate 8 from obstructing the fastening holes and hindering fastener installation. The proximity of the fastening holes 6 to the protrusions 5 ensures that the fasteners can connect to the support plate 8 on the protrusions 5 after passing through the fastening holes 6.

[0047] Based on the above embodiments, as a further preferred option, please refer to... Figure 6 The two side panels in the width direction of the box body 1 and the one side panel in the length direction of the box body 1 are integrally formed to form a U-shaped bracket 4. The other side panel in the length direction of the box body 1 is a panel 2. The panel 2 is detachably set at the open end of the U-shaped bracket 4 opposite to its closed end. The top plate and bottom plate 3 in the thickness direction of the box body 1 are detachably set on the two open sides opposite to the U-shaped bracket 4.

[0048] Specifically, the left side panel, right side panel, and rear side panel of the enclosure 1 are integrally formed to form a U-shaped bracket 4. The U-shaped bracket 4 has a high load-bearing capacity. The support plate 8 is fixed between the two opposite side panels (i.e., the aforementioned left side panel and right side panel) of the U-shaped bracket 4, which can effectively improve the structural stability of the support plate 8. Furthermore, the panel 2 is detachably installed at the open end of the U-shaped bracket 4 opposite to its closed end. The top plate and bottom plate 3 in the thickness direction of the enclosure 1 are detachably installed on the two opposite open sides of the U-shaped bracket 4. That is to say, the top plate, bottom plate 3, and front side panel (i.e., panel 2) of the enclosure 1 can all be detachably installed. This makes it more convenient to maintain the main circuit components inside the enclosure 1 and the various components on the panel 2 in the later stage.

[0049] Based on the above embodiments, as a further preferred option, please refer to... Figure 6 At least one plate in the U-shaped bracket 4 is provided with multiple heat dissipation holes 7. This arrangement allows for heat dissipation within the high-voltage control box through natural convection, thereby maintaining a suitable temperature for the heat-generating components within the box 1 and ensuring the safe and reliable operation of the high-voltage control box. Preferably, multiple heat dissipation holes 7 are provided on all three plates of the U-shaped bracket 4 to further enhance the heat dissipation effect of the high-voltage control box.

[0050] It should be noted that 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.

[0051] 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.

[0052] The high-voltage control box provided by this utility model has 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 box, characterized in that, The enclosure includes a housing (1), inside which a support plate (8) is provided in the thickness direction. A first set of main circuit devices is provided on the inner wall of the bottom plate (3) in the thickness direction of the housing (1). A second set of main circuit devices is provided at one end of the support plate (8) facing away from the bottom plate (3). A power terminal group is provided on the panel (2) of the housing (1). The power terminal group, the first set of main circuit devices and the second set of main circuit devices are connected to form a high-voltage main circuit.

2. The high-voltage control box according to claim 1, characterized in that, The first group of main circuit devices includes a main circuit breaker (9), a first-pole shunt (10), a first-pole diode (11), and two first-pole main contactors (12); the second group of main circuit devices includes a second-pole fuse (15), a Hall sensor (16), a second-pole diode (17), and two second-pole main contactors (18); the power terminal group includes a battery first terminal (24), a battery second terminal (25), a PCS first terminal (26), and a PCS second terminal (27); The main circuit breaker (9) is a four-pole main circuit breaker (9), which has four electrodes. Every two electrodes are connected in parallel to form a first pole or a second pole. The first terminal of the battery (24), the first terminal of the main circuit breaker (9), and the first terminal shunt (10) are connected in sequence to form a high voltage first terminal circuit. The first terminal diode and the two first terminal main contactors (12) are connected in parallel and are connected in a conductive manner between the first terminal shunt (10) and the first terminal of the PCS (26). The second terminal of the battery (25), the second terminal of the main circuit breaker (9), the second terminal fuse (15), and the Hall sensor (16) are sequentially electrically connected. The second terminal diode and the two second terminal main contactors (18) are connected in parallel and electrically connected between the second terminal fuse (15) and the second terminal of the PCS to form a high-voltage second terminal circuit.

3. The high-voltage control box according to claim 2, characterized in that, The housing (1) is equipped with a high-voltage DC main switch (13) connected to the high-voltage main circuit, and the panel (2) is equipped with a high-voltage DC switch handle (14) that is electrically connected to the high-voltage DC main switch (13).

4. The high-voltage control box according to claim 3, characterized in that, A gap of one is left between the support plate (8) and the panel (2) along the length direction of the box (1). The high voltage DC main switch (13) and the main circuit breaker (9) are stacked sequentially on the inner wall of the bottom plate (3) along the direction from the bottom plate (3) to the top plate in the thickness direction of the box (1).

5. The high-voltage control box according to claim 1, characterized in that, The enclosure (1) is equipped with a DC switching power supply (19) for powering low-voltage devices, and the panel (2) is equipped with a DC power supply switch (20) that is electrically connected to the DC switching power supply (19).

6. The high-voltage control box according to claim 5, characterized in that, A gap of two is left between the support plate (8) and the side plate of the housing (1) opposite to the panel (2) along the length direction of the housing (1). The DC switching power supply (19) is located at the end of the support plate (8) facing away from the bottom plate (3) and adjacent to the gap of two. The inner wall of the bottom plate (3) is provided with a relay (21) located below the DC switching power supply (19). The inner wall of the side plate of the housing (1) opposite to the panel (2) is provided with a main control module (23) and an AC switching power supply (28).

7. The high-voltage control box according to any one of claims 1 to 6, characterized in that, The top plate of the box body (1) in the thickness direction is detachable. The inner walls of the two side plates in the width direction of the box body (1) are provided with two support members. The two support members abut against the support plate (8). The two side plates in the width direction of the box body (1) are provided with fastening holes (6) on the side of the support members. The fastening holes (6) are for fasteners to pass through to fasten the support plate (8).

8. The high-voltage control box according to claim 7, characterized in that, The two side plates of the box body (1) in the width direction are provided with a plurality of fastening holes (6), and the plurality of fastening holes (6) are arranged at intervals along the length direction of the box body (1). The support includes at least two protrusions (5), which are spaced apart along the length of the housing (1) and located adjacent to the bottom of a row of fastening holes (6).

9. The high-voltage control box according to any one of claims 1 to 6, characterized in that, The two side panels in the width direction of the box (1) are integrally formed with one side panel in the length direction of the box (1) to form a U-shaped bracket (4). The other side panel in the length direction of the box (1) is the panel (2). The panel (2) is detachably provided on the opening side in the length direction of the U-shaped bracket (4). The top plate and bottom plate (3) in the thickness direction of the box (1) are detachably provided on the two opening sides in the thickness direction of the U-shaped bracket (4).

10. The high-voltage control box according to claim 9, characterized in that, At least one plate in the U-shaped bracket (4) is provided with multiple heat dissipation holes (7).

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