Electric box and formation and dispensing equipment

Abstract

The application discloses an electric box and a formation and capacity distribution equipment. In the electric box, a first connection link for transmitting a direct-current signal and a second connection link for transmitting an alternating-current signal are packaged into one whole, the input of the direct-current signal and the alternating-current signal is realized through a first connection end on the surface of a box body, and the output of the direct-current signal and the alternating-current signal is realized through a second connection end and a third connection end, so that the wiring harness of the packaged strong current electric box can be realized, the first connection link and the second connection link can be packaged into one whole, the modularization of the packaged strong current electric box can be realized, the installation area of the devices of the strong current part is reduced, the wire slot is removed, and the aesthetic degree of the devices of the strong current part of the formation and capacity distribution equipment is improved.

Description

Technical Field

[0001] This application relates to a chemical composition and capacity testing technology, and includes, but is not limited to, an electrical box and a chemical composition and capacity testing device. Background Technology

[0002] In a formation and capacity testing device, the components of the high-voltage part of the device are scattered on a dedicated mounting surface, which occupies a large area. In addition, there are many cable trays on the mounting surface to accommodate the connecting wires. The conventional cable tray design greatly reduces the aesthetics of the entire formation and capacity testing device. Furthermore, even if the connecting wires between the various components of the high-voltage part are in the cable trays, the wiring is very messy and there are certain safety risks. Utility Model Content

[0003] In view of this, the electrical box and the capacity-deploying device provided in the embodiments of this application can realize the overall packaging of high-voltage electricity, achieve modularization and wiring harnessing, reduce the installation area of ​​high-voltage components, and eliminate wire troughs.

[0004] In a first aspect, an embodiment of this application provides an electrical box, comprising a box body, a first connecting terminal, a second connecting terminal, a third connecting terminal, a first connecting link, and a second connecting link. The electrical box transmits DC signals through the first connecting terminal, the first connecting link, and the second connecting terminal, and transmits AC signals through the first connecting terminal, the second connecting link, and the third connecting terminal, wherein:

[0005] The first connecting end is located at a first position on the surface of the box, and the distance between the first position and the first end face of the box is less than or equal to a preset first distance threshold. The second connecting end is located at a second position on the surface of the box, and the distance between the second position and the second end face of the box is less than or equal to a preset second distance threshold. The third connecting end is located at a third position on the surface of the box, and the distance between the third position and the second end face is less than or equal to a preset third distance threshold. The first end face and the second end face are two opposite end faces.

[0006] The first connection link is connected between the first connection end and the second connection end, and the second connection link is connected between the first connection end and the third connection end. The first connection link and the second connection link are located inside the enclosure, and the spatial area corresponding to the first connection link and the spatial area corresponding to the second connection link do not overlap.

[0007] In one embodiment, the first connection link includes a first circuit breaker and a first contactor, which are electrically connected, wherein:

[0008] The distance between the first circuit breaker and the first connection terminal is less than a preset fourth distance threshold, and the first circuit breaker is electrically connected to the first connection terminal.

[0009] The distance between the first contactor and the second connection terminal is less than a preset fifth distance threshold, and the first contactor and the second connection terminal are electrically connected.

[0010] In one embodiment, the first connection link includes a first fuse electrically connected between the first contactor and the second connection terminal, the distance between the first fuse and the second connection terminal being less than a target distance, the target distance being the distance between the first contactor and the second connection terminal.

[0011] In one embodiment, the projection areas of the first circuit breaker, the first contactor, and the first fuse on the second end face partially or completely overlap.

[0012] In one embodiment, the space between the first circuit breaker and the first contactor is used to accommodate some or all of the devices in the second connection link.

[0013] In one embodiment, the second connection link includes a voltage conversion unit and a link switching unit, wherein the link switching unit is electrically connected to the voltage conversion unit, wherein:

[0014] The distance between the link switching unit and the first connection end is less than a preset sixth distance threshold, and the link switching unit is electrically connected to the first connection end;

[0015] The distance between the voltage conversion unit and the third connection terminal is less than a preset seventh distance threshold, and the voltage conversion unit is electrically connected to the third connection terminal.

[0016] In one embodiment, the link switching unit includes a second circuit breaker and a second contactor, which are electrically connected, wherein:

[0017] The distance between the second circuit breaker and the first connection terminal is less than a preset eighth distance threshold, and the second circuit breaker is electrically connected to the first connection terminal;

[0018] The distance between the second contactor and the voltage conversion unit is less than a preset ninth distance threshold, and the second contactor is electrically connected to the voltage conversion unit.

[0019] In one embodiment, the first circuit breaker and the first connection terminal are located on the same horizontal line, the second circuit breaker is disposed between the first circuit breaker and the first connection terminal, and the second contactor is disposed between the first circuit breaker and the first contactor.

[0020] In one embodiment, the second connection link further includes a second fuse electrically connected between the voltage conversion unit and the third connection terminal, wherein the distance between the second fuse and the third connection terminal is less than a target distance, the target distance being the distance between the voltage conversion unit and the third connection terminal.

[0021] Secondly, an embodiment of this application provides a chemical composition and capacity testing device, including an electrical box as described in the first aspect.

[0022] In the aforementioned electrical box, by encapsulating the first connection link for transmitting DC signals and the second connection link for transmitting AC signals into a single unit, and by implementing the input of DC and AC signals through the first connection terminal on the surface of the box, and the output of DC and AC signals through the second and third connection terminals, the wiring harness of the encapsulated high-voltage electrical box can be realized. Furthermore, by encapsulating the first and second connection links into a single unit, the high-voltage electrical box can be modularized, reducing the installation area of ​​the high-voltage components, eliminating wire troughs, and improving the aesthetics of the high-voltage components in the modularized capacity-setting equipment. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with this application and, together with the specification, serve to explain the technical solutions of this application.

[0024] Figure 1 This is a schematic diagram of the electrical box provided in an embodiment of this application;

[0025] Figure 2 A schematic diagram showing the positions of the first connecting end, the second connecting end, and the third connecting end provided for an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the structure of the first connection link provided in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the first connection link provided in an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the structure of the second connection link provided in an embodiment of this application;

[0029] Figure 6This is a schematic diagram of the structure of the second connection link provided in an embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the electrical box provided in an embodiment of this application;

[0031] Figure 8 This is a schematic diagram of the electrical box provided in an embodiment of this application;

[0032] Figure 9 This is a schematic diagram of the implementation structure of the electrical box provided in the embodiments of this application. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0035] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0036] It should be noted that the terms "first, second, third" used in the embodiments of this application are used to distinguish similar or different objects and do not represent a specific order of objects. It can be understood that "first, second, third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0037] This application discloses an electrical box that encapsulates a first connection link for transmitting DC signals and a second connection link for transmitting AC signals into a single unit. The first connection terminal on the surface of the box enables the input of DC and AC signals, while the second and third connection terminals enable the output of DC and AC signals. This allows for the harnessing of the encapsulated high-voltage electrical box. Furthermore, by encapsulating the first and second connection links into a single unit, the encapsulated high-voltage electrical box can be modularized, reducing the installation area of ​​the high-voltage components, eliminating wire troughs, and improving the aesthetics of the high-voltage components in the capacity-setting equipment.

[0038] The following will be described in detail with reference to the accompanying drawings.

[0039] Figure 1 This is a schematic diagram of an electrical box provided as an embodiment of this application. Figure 1 As shown, the electrical box 1 may include a box body, a first connection terminal 10, a second connection terminal 13, a third connection terminal 14, a first connection link 11, and a second connection link 12. The electrical box 1 transmits DC signals through the first connection terminal 10, the first connection link 11, and the second connection terminal 13, and transmits AC signals through the first connection terminal 10, the second connection link 12, and the third connection terminal 14, wherein:

[0040] The first connecting end 10 is located at a first position on the surface of the box, and the distance between the first position and the first end face of the box is less than or equal to a preset first distance threshold. The second connecting end 13 is located at a second position on the surface of the box, and the distance between the second position and the second end face of the box is less than or equal to a preset second distance threshold. The third connecting end 14 is located at a third position on the surface of the box, and the distance between the third position and the second end face is less than or equal to a preset third distance threshold. The first end face and the second end face are two opposite end faces.

[0041] The first connection link 11 is connected between the first connection end 10 and the second connection end 13, and the second connection link 12 is connected between the first connection end 10 and the third connection end 14. The first connection link 11 and the second connection link 12 are located inside the housing, and the spatial area corresponding to the first connection link 11 and the spatial area corresponding to the second connection link 12 do not overlap.

[0042] During the transmission of DC signals through the electrical box 1, the first connection terminal 10 receives the DC signals and then transmits them to the first connection link 11. The first connection link 11 outputs the DC signals through the second connection terminal 13 to other devices in the capacity testing equipment so that the other devices can operate based on the DC signals.

[0043] During the transmission of AC signals through the electrical box 1, the first connection terminal 10 receives the AC signals and then transmits them to the second connection link 12. The second connection link 12 outputs the AC signals through the third connection terminal 14 to other devices in the capacity-forming device so that the other devices can operate based on the AC signals.

[0044] Direct current (DC) signals refer to electrical signals where the current direction remains constant, always flowing from the positive terminal to the negative terminal of the power source. Alternating current (AC) signals refer to electrical signals where the current direction changes periodically; within a complete cycle, the current direction changes from one direction to another and then back to its original direction. For example, in a common sinusoidal alternating current, the current direction changes multiple times per second.

[0045] Because DC and AC signals have different current directions, they need to be transmitted through different transmission devices. Therefore, DC and AC components are usually distributed on the mounting platform of the high-voltage components of the capacity forming device. Since the DC and AC components cannot be shared, the components on the mounting platform occupy a large area. In this application, the first connection link 11 for transmitting DC signals and the second connection link 12 for transmitting AC signals are encapsulated in a single electrical box 1, which saves the floor space of the high-voltage components of the capacity forming device.

[0046] To facilitate technicians in connecting the power supply cable of the external power source to the first connection terminal 10, the first connection terminal 10 is placed on the surface of the enclosure. In order to standardize the routing of the first connection link 11 and the second connection link 12 inside the enclosure, the first connection terminal 10 is usually placed near the first end face, and the second connection terminal 13 and the third connection terminal 14 are placed near the second end face. The first end face and the second end face are two opposite end faces, which can unify the routing direction of the first connection link 11 and the second connection link 12 and reduce the area occupied by the connection lines in the first connection link 11 and the second connection link 12.

[0047] In some embodiments, the second connection end 13 and the third connection end 14 described above can be aviation connectors or heavy-duty connectors.

[0048] In some embodiments, the first distance threshold can be any value above or below zero, and can be set by those skilled in the art according to the actual situation. If the first distance threshold is zero, the first position is the position on the first end face. If the first distance threshold is a value greater than zero, the first position is the position on other end faces adjacent to the first end face, and can be set by those skilled in the art according to the actual situation. This application does not impose any restrictions.

[0049] For example, taking the first position as the position on the first end face, the first connection end 10 is directly set on the first end face. The power connection line led out from the DC power supply can be connected to the first connection end 10 on the first end face to introduce the DC power signal of the DC power supply into the box. The power connection line led out from the AC power supply can be connected to the first connection end 10 on the first end face to introduce the AC power signal of the AC power supply into the box. The first end face is, for example, the end face of the top of the box.

[0050] For example, taking a position on another end face adjacent to the first end face as an example, if the electrical box 1 is installed on a target plane, such as a wall, that is, the target end face of the box is in contact with the target plane, and the target end face is perpendicularly connected to the first end face, the power connection cable can pass through the target plane and be directly connected to the first connection end 10. The first connection end 10 can be set on the target end face, and the position of the first connection end 10 on the target end face is close to the first end face; or, a through hole can be opened on the first end face, and the position of the through hole can be any position on the first end face, such as... Figure 2 As shown, the power connection cable passes through the through hole through the first end face and is then connected to the first connection end on the target end face.

[0051] Similarly, the second distance threshold can be any value above zero, and can be set by those skilled in the art according to the actual situation. If the second distance threshold is zero, the second position is the position on the second end face. If the second distance threshold is a value greater than zero, the second position is the position on other end faces adjacent to the second end face. The specific setting can be set by those skilled in the art according to the actual situation, and the embodiments of this application do not impose any restrictions.

[0052] For example, such as Figure 2 As shown, taking the second position as the position on the second end face as an example, the second connection terminal 13 is directly set on the second end face. The connection line led out from the first connection link 11 can be connected to the second connection terminal 13 on the second end face to lead the DC signal out of the box. The connection line led out from the second connection link 12 can be connected to the third connection terminal 14 on the second end face to lead the AC signal out of the box. The second end face is, for example, the end face at the bottom of the box.

[0053] For example, taking the second position as a position on other end faces adjacent to the second end face as an example, if the electrical box 1 is installed on the target plane, that is, the target end face of the box is in contact with the target plane, and the target end face is perpendicularly connected to the second end face, the connecting wire led out from the second connecting end 13 of the electrical box 1 can pass through the target plane and connect with other devices; or, a through hole can be opened on the second end face, the position of the through hole can be any position on the second end face, the connecting wire passes through the through hole through the second end face, and then connects with the second connecting end on the target end face, wherein the second connecting end 13 is close to the second end face at the second position on the target end face.

[0054] It should be noted that the third position of the third connection terminal 14 is the same as the second position, and will not be repeated here.

[0055] In some embodiments, the second position and the third position may be located on the second end face at the same time, or the second position may be located on other end faces and the third position may be located on the second end face. The specific settings can be made by those skilled in the art according to the actual situation, and the embodiments of this application do not impose any restrictions.

[0056] In one embodiment, such as Figure 3 As shown, the first connection link 11 includes a first circuit breaker 111 and a first contactor 112, which are electrically connected, wherein:

[0057] The distance between the first circuit breaker 111 and the first connection terminal 10 is less than the preset fourth distance threshold, and the first circuit breaker 111 and the first connection terminal 10 are electrically connected.

[0058] The distance between the first contactor 112 and the second connection terminal 13 is less than a preset fifth distance threshold, and the first contactor 112 and the second connection terminal 13 are electrically connected.

[0059] In some embodiments, the first circuit breaker 111 may include a contact system, an arc-extinguishing device, an operating mechanism, and protective devices. The contact system is used for switching the circuit on and off; the arc-extinguishing device can quickly extinguish the arc when the circuit is broken, preventing the arc from burning the contacts; the operating mechanism is used to perform the closing and opening operations of the circuit breaker; the protective devices include overload protection, short-circuit protection, undervoltage protection, etc., which determine whether the circuit needs to be disconnected by detecting parameters such as current and voltage in the circuit. Thus, technicians can quickly cut off the transmission of DC signals by operating the above-mentioned operating mechanism when equipment failure occurs.

[0060] It should be understood that in the event of a short circuit or overload, the current increases rapidly, which may generate an electric arc and heat. Placing the first circuit breaker 111 close to the first connection terminal 10 can shorten the distance the current flows, reduce the accumulation of electric arc and heat, and thus reduce the risk of fire. Simultaneously, when a fault occurs in the circuit (such as a short circuit or overload), the first circuit breaker 111 can quickly disconnect the power supply to prevent the fault from escalating. If the first circuit breaker 111 is close to the first connection terminal 10, it can disconnect the power supply more quickly when a fault occurs, reducing the potential harm to equipment and personnel.

[0061] In some embodiments, the first contactor 112 may include an electromagnetic mechanism, a contact system, and an arc-extinguishing device. The electromagnetic mechanism is the core part of the contactor. It generates a magnetic field by energizing an electromagnetic coil, which attracts the armature and drives the contacts to close, thereby connecting the circuit. The contact system includes main contacts and auxiliary contacts. The main contacts are used to control the on / off state of the main circuit, and the auxiliary contacts are used to assist in controlling the on / off state of the main circuit. The arc-extinguishing device generally uses a simple arc-extinguishing hood to extinguish the arc.

[0062] Therefore, compared to the first circuit breaker 111, the first contactor 112 does not have an operating mechanism that can be operated by technicians. That is, the first contactor 112 can only rely on the controller to control the electromagnetic mechanism and contact system to realize the circuit opening and closing. It cannot rely on the manual operation of technicians to cut off the circuit in an emergency. Therefore, in this embodiment, the first circuit breaker 111 is used to control the opening and closing of the output terminal of the first connection terminal 10, and the first contactor 112 is used to control the opening and closing of the input terminal of the second connection terminal 13.

[0063] Therefore, by setting the first circuit breaker 111 close to the first connection terminal 10, the first circuit breaker 111 can cut off the power supply more quickly when a fault occurs. By setting the first contactor 112 close to the second connection terminal 13, the load can be responded to more quickly according to control commands, such as start commands, stop commands, etc.

[0064] It should be noted that the aforementioned fourth and fifth distance thresholds can be set by those skilled in the art according to actual circumstances, and this application embodiment does not impose any restrictions.

[0065] In one embodiment, such as Figure 4 As shown, the first connection link 11 includes a first fuse 113, which is electrically connected between the first contactor 112 and the second connection terminal 13. The distance between the first fuse 113 and the second connection terminal 13 is less than the target distance, which is the distance between the first contactor 112 and the second connection terminal 13.

[0066] The first fuse 113 is used to disconnect the connection between the first contactor 112 and the second connection terminal 13 when the voltage value of the DC signal between the first contactor 112 and the second connection terminal 13 is greater than a preset voltage threshold, thereby achieving further protection for the load connected to the second connection terminal 13.

[0067] In order to enable faster disconnection from the load in the event of a circuit failure, the first fuse 113 can be positioned closer to the second connection terminal 13 than the first contactor 112.

[0068] Because there are first connection links 11 and second connection links 12 inside the enclosure, the space inside the enclosure can be divided into regions to achieve the partitioning of the first connection links 11 and the second connection links 12. However, because the number and size of the components in the first connection links 11 and the second connection links 12 are different, the space region corresponding to the first connection link 11 and the space region corresponding to the second connection link 12 can overlap with each other, thereby maximizing the utilization of the internal space of the enclosure.

[0069] In one embodiment, the projection areas of the first circuit breaker 111, the first contactor 112, and the first fuse 113 on the second end face partially or completely overlap.

[0070] It is understandable that the projection areas of the first circuit breaker 111, the first contactor 112, and the first fuse 113 on the second end face overlap, indicating that the line connecting the first circuit breaker 111, the first contactor 112, and the first fuse 113 is nearly perpendicular to the second end face. Ideally, if the line connecting the first circuit breaker 111, the first contactor 112, and the first fuse 113 were perpendicular to the second end face, the projection area of ​​the largest device among the first circuit breaker 111, the first contactor 112, and the first fuse 113 would completely cover the projection areas of the other two devices, resulting in a complete overlap of the projection areas of the first circuit breaker 111, the first contactor 112, and the first fuse 113 on the second end face.

[0071] However, because the first circuit breaker 111, the first contactor 112, and the first fuse 113 have different sizes, there will be an offset between their projection areas. In addition, considering the size of the devices on the second connection link 12, there may also be an offset between the projection areas of the first circuit breaker 111, the first contactor 112, and the first fuse 113, resulting in only partial overlap between the projection areas of the first circuit breaker 111, the first contactor 112, and the first fuse 113 on the second end face.

[0072] In one embodiment, the space between the first circuit breaker 111 and the first contactor 112 is used to accommodate some or all of the devices in the second connection link 12.

[0073] It is understood that, since the first connection link 11 in this embodiment includes a first circuit breaker 111 and a first contactor 112, when the number and size of the devices in the second connection link 12 are greater than those in the first connection link 11, some or all of the devices in the second connection link 12 can be accommodated in the space between the first circuit breaker 111 and the first contactor 112, thereby maximizing the utilization of the space inside the box.

[0074] In one embodiment, such as Figure 5 As shown, the second connection link 12 includes a voltage conversion unit 122 and a link switching unit 121. The link switching unit 121 is electrically connected to the voltage conversion unit 122, wherein:

[0075] The distance between the link connection / disconnection unit 121 and the first connection terminal 10 is less than the preset sixth distance threshold, and the link connection / disconnection unit 121 is electrically connected to the first connection terminal 10.

[0076] The distance between the voltage conversion unit 122 and the third connection terminal 14 is less than the preset seventh distance threshold, and the voltage conversion unit 122 and the third connection terminal 14 are electrically connected.

[0077] The link connection unit 121 is used to control the connection between the first connection terminal 10 and the voltage conversion unit 122 to be connected or disconnected. When the link connection unit 121 connects the first connection terminal 10 and the voltage conversion unit 122, the voltage conversion unit 122 will convert the received AC signal to obtain the converted AC signal, and output the converted AC signal through the third connection terminal 14. When the link connection unit 121 disconnects the first connection terminal 10 and the voltage conversion unit 122, the voltage conversion unit 122 will not receive the AC signal, that is, the third connection terminal 14 cannot output the AC signal.

[0078] If a circuit malfunctions, causing a sudden change in the electrical signal input to the voltage conversion unit 122, the device of the voltage conversion unit 122 may be damaged. Therefore, in this embodiment, the link switching unit 121 is positioned close to the first connection terminal 10, and the voltage conversion unit 122 is positioned close to the third connection terminal 14. This allows the link switching unit 121 to switch the connection of the voltage conversion unit 122 more quickly when a fault occurs, thereby protecting the device of the voltage conversion unit 122.

[0079] It should be noted that the aforementioned sixth and seventh distance thresholds can be set by those skilled in the art according to actual circumstances, and this application embodiment does not impose any restrictions.

[0080] In some embodiments, the voltage conversion unit 122 described above can be a switching power supply, which can convert AC signals into target electrical signals required by the load. For example, the switching power supply can convert 380V AC signals into 24V AC signals so that the load can operate based on 24V AC signals.

[0081] In some embodiments, the number of the voltage conversion units 122 can be one or more, thereby generating one or more converted AC signals and outputting one or more converted AC signals through the third connection terminal 14 to power one or more loads.

[0082] In the process of outputting two or more converted AC signals through the third connection terminal 14, different converted AC signals will be output through different ports on the third connection terminal 14. For example, if there are two converted AC signals, then the third connection terminal 14 includes at least a first port and a second port. The first port transmits one of the converted AC signals, and the second port transmits the other converted AC signal.

[0083] In one embodiment, such as Figure 6 As shown, the link switching unit 121 includes a second circuit breaker 1211 and a second contactor 1212, which are electrically connected, wherein:

[0084] The distance between the second circuit breaker 1211 and the first connection terminal 10 is less than the preset eighth distance threshold, and the second circuit breaker 1211 is electrically connected to the first connection terminal 10.

[0085] The distance between the second contactor 1212 and the voltage conversion unit 122 is less than the preset ninth distance threshold, and the second contactor 1212 is electrically connected to the voltage conversion unit 122.

[0086] In some embodiments, the second circuit breaker 1211 may include a contact system, an arc-extinguishing device, an operating mechanism, and protective devices. The contact system is used for switching the circuit on and off; the arc-extinguishing device can quickly extinguish the arc when the circuit is broken, preventing the arc from burning the contacts; the operating mechanism is used to perform the closing and opening operations of the circuit breaker; the protective devices include overload protection, short-circuit protection, undervoltage protection, etc., which determine whether the circuit needs to be disconnected by detecting parameters such as current and voltage in the circuit. Thus, technicians can quickly cut off the transmission of DC signals by operating the above-mentioned operating mechanism when equipment failure occurs.

[0087] It should be understood that in the event of a short circuit or overload, the current increases rapidly, which may generate an electric arc and heat. Placing the second circuit breaker 1211 close to the first connection terminal 10 shortens the distance the current travels, reducing the accumulation of electric arc and heat, thereby lowering the risk of fire. Simultaneously, when a fault occurs in the circuit (such as a short circuit or overload), the second circuit breaker 1211 can quickly disconnect the power supply, preventing the fault from escalating. If the second circuit breaker 1211 is close to the first connection terminal 10, it can disconnect the power supply more quickly when a fault occurs, reducing the potential harm to equipment and personnel.

[0088] In some embodiments, the second contactor 1212 may include an electromagnetic mechanism, a contact system, and an arc-extinguishing device. The electromagnetic mechanism is the core part of the contactor. It generates a magnetic field by energizing an electromagnetic coil, which attracts the armature and drives the contacts to close, thereby connecting the circuit. The contact system includes main contacts and auxiliary contacts. The main contacts are used to control the on / off state of the main circuit, and the auxiliary contacts are used to assist in controlling the on / off state of the main circuit. The arc-extinguishing device generally uses a simple arc-extinguishing hood to extinguish the arc.

[0089] Therefore, compared to the second circuit breaker 1211, the second contactor 1212 does not have an operating mechanism that can be operated by technicians. That is, the second contactor 1212 can only rely on the controller to control the electromagnetic mechanism and contact system to realize the circuit opening and closing. It cannot rely on the manual operation of technicians to cut off the circuit in an emergency. Therefore, in this embodiment, the second circuit breaker 1211 is used to control the opening and closing of the output terminal of the first connection terminal 10, and the second contactor 1212 is used to control the opening and closing of the input terminal of the voltage conversion unit 122.

[0090] By positioning the second circuit breaker 1211 close to the first connection terminal 10, it is possible for the second circuit breaker 1211 to cut off the power supply more quickly when a fault occurs. By positioning the second contactor 1212 close to the voltage conversion unit 122, it is possible to make the load respond more quickly according to control commands, such as start commands, stop commands, etc.

[0091] It should be noted that the eighth and ninth distance thresholds mentioned above can be set by those skilled in the art according to actual circumstances, and this application embodiment does not impose any restrictions.

[0092] In some embodiments, if the number of loads is large, it is necessary to output multiple converted AC signals. However, the output of a single voltage conversion unit 122 is limited, so multiple voltage conversion units 122 need to be set to adapt to the number of loads. However, if the number of voltage conversion units 122 is set to two or more, it is necessary to split one AC signal output from the first connection terminal 10. That is, multiple shunts 1213 are set between the second contactor 1212 and the multiple voltage conversion units 122 to split the AC signal through the multiple shunts 1213 to obtain multiple AC sub-signals. The multiple AC sub-signals are output to different loads through different voltage conversion units 122.

[0093] The voltage conversion ratios of different voltage conversion units 122 can be the same or different, and can be set by those skilled in the art according to the actual situation. This application embodiment does not impose any restrictions.

[0094] In one embodiment, such as Figure 7 As shown, the first circuit breaker 111 and the first connection terminal 10 are located on the same horizontal line, the second circuit breaker 1211 is disposed between the first circuit breaker 111 and the first connection terminal 10, and the second contactor 1212 is disposed between the first circuit breaker 111 and the first contactor 112.

[0095] By placing the first circuit breaker 111 and the first connection terminal 10 on the same horizontal line, and setting the second circuit breaker 1211 between the first circuit breaker 111 and the first connection terminal 10, the utilization rate of the internal space of the enclosure can be improved by greatly shortening the distance between the first circuit breaker 111 and the first connection terminal 10 and the distance between the second circuit breaker 1211 and the first connection terminal 10. At the same time, by setting the second contactor 1212 between the first circuit breaker 111 and the first contactor 112, more space can be allocated to the voltage conversion unit 122, so that multiple voltage conversion units 122 can be reasonably distributed in the same area, thereby achieving space standardization.

[0096] In one embodiment, such as Figure 8 As shown, the second connection link 12 also includes a second fuse 123, which is electrically connected between the voltage conversion unit 122 and the third connection terminal 14. The distance between the second fuse 123 and the third connection terminal 14 is less than the target distance, which is the distance between the voltage conversion unit 122 and the third connection terminal 14.

[0097] The second fuse 123 is used to disconnect the connection between the voltage conversion unit 122 and the third connection terminal 14 when the voltage value of the DC signal between the voltage conversion unit 122 and the third connection terminal 14 is greater than a preset voltage threshold, thereby achieving further protection for the load connected to the third connection terminal 14.

[0098] In order to enable faster disconnection from the load in the event of a circuit failure, the second fuse 123 can be positioned closer to the third connection terminal 14 than the voltage conversion unit 122.

[0099] Figure 9 This is a schematic diagram of an embodiment of an electrical box 1 provided in this application. Figure 9 As shown, the electrical box 1 may include a first connecting terminal 10, a second connecting terminal 13, a third connecting terminal 14, a first connecting link 11, and a second connecting link 12. The first connecting link 11 connects the first connecting terminal 10 and the second connecting terminal 13, and the second connecting link 12 connects the first connecting terminal 10 and the third connecting terminal 14. The first connecting terminal 10 is positioned near the top of the box, while the second connecting terminal 13 and the third connecting terminal 14 are positioned near the bottom of the box.

[0100] The first connection link 11 includes a first circuit breaker 111, a first contactor 112, and a first fuse 113. One end of the first circuit breaker 111 is electrically connected to the first connection terminal 10, the other end of the first circuit breaker 111 is electrically connected to one end of the first contactor 112, the other end of the first contactor 112 is electrically connected to one end of the first fuse 113, and the other end of the first fuse 113 is electrically connected to the second connection terminal 13.

[0101] The second connection link 12 includes a second circuit breaker 1211, a second contactor 1212, a shunt 1213, multiple voltage conversion units 122, and a second fuse 123. One end of the second circuit breaker 1211 is electrically connected to the first connection terminal 10, and the other end of the second circuit breaker 1211 is electrically connected to one end of the second contactor 1212. The other end of the second contactor 1212 is electrically connected to the input terminal of the shunt 1213. Multiple output terminals of the shunt 1213 are respectively electrically connected to the input terminals of multiple voltage conversion units 122. The output terminals of the multiple voltage conversion units 122 are electrically connected to one end of the second fuse 123, and the other end of the second fuse 123 is electrically connected to the third connection terminal 14.

[0102] To maximize space utilization, in this embodiment, the first connection terminal 10, the first circuit breaker 111, and the second circuit breaker 1211 are arranged on the same horizontal line. The first contactor 112 and the second connection terminal 13 are arranged in the left side area of ​​the enclosure. Considering the large number of AC signal loads, multiple voltage conversion units 122 are required. Therefore, the number of devices in the second connection link 12 is large. In this embodiment, the second contactor 1212 in the second connection link 12 is arranged between the first circuit breaker 111 and the first contactor 112. Then, multiple voltage conversion units 122 are distributed on the right side of the second contactor 1212 and the first contactor 112. Finally, the second fuse 123 is arranged near the third connection terminal 14.

[0103] For DC signals, the power supply line for the DC signal enters through a hole in the housing and connects to the first connection terminal 10. The first connection terminal 10 transmits the DC signal to the first circuit breaker 111 through a connecting line. When the first circuit breaker 111 is on, it transmits the DC signal to the first contactor 112. When the first contactor 112 is on, it transmits the DC signal to the second connection terminal 13 via the first fuse 113, and outputs it to the corresponding load via the second connection terminal 13.

[0104] For AC signals, the power supply line for the AC signal enters through a hole in the housing and connects to the first connection terminal 10. The first connection terminal 10 transmits the AC signal to the second circuit breaker 1211 via a connecting line. When the second circuit breaker 1211 is on, it transmits the AC signal to the second contactor 1212. When the second contactor 1212 is on, it divides the AC signal into multiple paths via a shunt 1213. These paths are then converted into multiple AC signals by multiple voltage conversion units 122 and transmitted to the second fuse 123. The second fuse 123 includes a fuse 123A and an AC contactor 123B connected in series. The multiple converted AC signals are then output to the third connection terminal 14 after passing through the fuse 123A and the AC contactor 123B in sequence, and finally output to the corresponding load via the third connection terminal 14.

[0105] In some embodiments, the voltage conversion unit 122 can be a switching power supply that converts 220V to 24V, the shunt 1213 can be a connection terminal, the first circuit breaker 111 can be a DC 700V circuit breaker, and the second circuit breaker 1211 can be an AC 380V circuit breaker.

[0106] This application also provides a chemical composition and capacity testing device, including an electrical box 1 as described in any of the above embodiments.

[0107] In some embodiments, the electrical box can output a DC signal to the power module of the formation and capacity testing device, and the electrical box can output a converted AC signal to the fan of the formation and capacity testing device.

[0108] It should be understood that the phrases "one embodiment," "an embodiment," or "some embodiments" mentioned throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment," "in one embodiment," or "in some embodiments" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above-described processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above-described embodiments are merely for descriptive purposes and do not represent the superiority or inferiority of the embodiments. The descriptions of the various embodiments above tend to emphasize the differences between the various embodiments; their similarities or commonalities can be referred to mutually, and for the sake of brevity, they will not be repeated here.

[0109] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three kinds of relationships. For example, object A and / or object B can represent three situations: object A exists alone, object A and object B exist simultaneously, and object B exists alone.

[0110] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0111] The modules described above as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules. They may be located in one place or distributed across multiple network units. Some or all of the modules may be selected to achieve the purpose of this embodiment according to actual needs.

[0112] In addition, each functional module in the various embodiments of this application can be integrated into one processing unit, or each module can be a separate unit, or two or more modules can be integrated into one unit; the integrated modules can be implemented in hardware or in the form of hardware plus software functional units.

[0113] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, including read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-Erasable Programmable Read-Only Memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other computer-readable medium capable of carrying or storing data.

[0114] The features disclosed in the several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0115] The above description is merely an embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electrical box, characterized in that, Applied to a chemical reaction and capacity testing device, the electrical box includes a housing, a first connecting terminal (10), a second connecting terminal (13), a third connecting terminal (14), a first connecting link (11), and a second connecting link (12). The electrical box transmits DC signals through the first connecting terminal (10), the first connecting link (11), and the second connecting terminal (13), and transmits AC signals through the first connecting terminal (10), the second connecting link (12), and the third connecting terminal (14), wherein: The first connecting end (10) is located at a first position on the surface of the box, and the distance between the first position and the first end face of the box is less than or equal to a preset first distance threshold. The second connecting end (13) is located at a second position on the surface of the box, and the distance between the second position and the second end face of the box is less than or equal to a preset second distance threshold. The third connecting end (14) is located at a third position on the surface of the box, and the distance between the third position and the second end face is less than or equal to a preset third distance threshold. The first end face and the second end face are two opposite end faces. The first connection link (11) is connected between the first connection end (10) and the second connection end (13), and the second connection link (12) is connected between the first connection end (10) and the third connection end (14). The first connection link (11) and the second connection link (12) are located inside the housing, and the spatial area corresponding to the first connection link (11) and the spatial area corresponding to the second connection link (12) do not overlap.

2. The electrical box as described in claim 1, characterized in that, The first connection link (11) includes a first circuit breaker (111) and a first contactor (112), which are electrically connected, wherein: The distance between the first circuit breaker (111) and the first connection terminal (10) is less than a preset fourth distance threshold, and the first circuit breaker (111) is electrically connected to the first connection terminal (10). The distance between the first contactor (112) and the second connection terminal (13) is less than a preset fifth distance threshold, and the first contactor (112) and the second connection terminal (13) are electrically connected.

3. The electrical box as described in claim 2, characterized in that, The first connection link (11) includes a first fuse (113), which is electrically connected between the first contactor (112) and the second connection terminal (13). The distance between the first fuse (113) and the second connection terminal (13) is less than the target distance, which is the distance between the first contactor (112) and the second connection terminal (13).

4. The electrical box as described in claim 3, characterized in that, The projection areas of the first circuit breaker (111), the first contactor (112), and the first fuse (113) on the second end face partially or completely overlap.

5. The electrical box as described in claim 2, characterized in that, The space between the first circuit breaker (111) and the first contactor (112) is used to accommodate some or all of the devices in the second connection link (12).

6. The electrical box as described in claim 5, characterized in that, The second connection link (12) includes a voltage conversion unit (122) and a link switching unit (121), wherein the link switching unit (121) is electrically connected to the voltage conversion unit (122), wherein: The distance between the link switching unit (121) and the first connection end (10) is less than a preset sixth distance threshold, and the link switching unit (121) is electrically connected to the first connection end (10). The distance between the voltage conversion unit (122) and the third connection terminal (14) is less than a preset seventh distance threshold, and the voltage conversion unit (122) and the third connection terminal (14) are electrically connected.

7. The electrical box as described in claim 6, characterized in that, The link switching unit (121) includes a second circuit breaker (1211) and a second contactor (1212), which are electrically connected, wherein: The distance between the second circuit breaker (1211) and the first connection terminal (10) is less than a preset eighth distance threshold, and the second circuit breaker (1211) is electrically connected to the first connection terminal (10). The distance between the second contactor (1212) and the voltage conversion unit (122) is less than a preset ninth distance threshold, and the second contactor (1212) is electrically connected to the voltage conversion unit (122).

8. The electrical box as described in claim 7, characterized in that, The first circuit breaker (111) and the first connection terminal (10) are located on the same horizontal line. The second circuit breaker (1211) is disposed between the first circuit breaker (111) and the first connection terminal (10). The second contactor (1212) is disposed between the first circuit breaker (111) and the first contactor (112).

9. The electrical box as described in claim 7, characterized in that, The second connection link (12) also includes a second fuse (123), which is electrically connected between the voltage conversion unit (122) and the third connection terminal (14). The distance between the second fuse (123) and the third connection terminal (14) is less than the target distance, which is the distance between the voltage conversion unit (122) and the third connection terminal (14).

10. A chemical composition and capacity testing device, characterized in that, The chemical composition and capacity testing equipment includes an electrical box as described in any one of claims 1-9.

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