Electric control box structure of horizontal energy storage liquid cooling air conditioner

Abstract

The utility model relates to the technical field of energy storage liquid cooling air conditioners, and discloses an electric control box structure of a horizontal energy storage liquid cooling air conditioner, which comprises a case, an electric control box arranged in the case, a switching power supply arranged in the electric control box, a control board, a driving board, a miniature circuit breaker and an alternating current contactor, one side face of the electric control box is provided with an opening and is in butt joint with the inner side face of the case, the inner side face of the case is provided with an access hole corresponding to the opening, the access hole is sealed through an access cover plate, the switching power supply is in power supply connection with the control board and the driving board, and the control board is electrically connected with the miniature circuit breaker and the alternating current contactor; the electric control box is provided with cable through holes, and each cable through hole is provided with a sealed waterproof cable connector. The electric control box structure provided by the utility model has relatively high sealing and waterproof performance, ensures reliable equipment control, can have relatively wide and convenient operation space only by opening the maintenance cover plate, and greatly improves the maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of energy storage liquid-cooled air conditioning technology, and in particular to the electrical control box structure of a horizontal energy storage liquid-cooled air conditioner. Background Technology

[0002] In the current booming development of energy storage systems, horizontal liquid-cooled air conditioners for energy storage play a crucial role in precisely regulating temperature and ensuring the efficient and stable operation of energy storage equipment. Their control box, as the core component housing numerous precision electronic control elements, operates under extremely harsh conditions.

[0003] Traditional electrical control boxes often suffer from poor waterproof sealing performance. Their horizontal installation layout makes them more susceptible to coolant splashes, condensation buildup, and dust intrusion. Once moisture and dust penetrate, they can easily cause short circuits and corrosion damage to electrical control components, significantly reducing their lifespan and system reliability, and increasing equipment failure frequency and maintenance costs.

[0004] Meanwhile, the design of most existing electrical control boxes does not adequately consider ease of maintenance. When internal components fail, maintenance personnel need to spend a lot of time disassembling complex structures, and the narrow operating space makes it inconvenient to troubleshoot circuits and replace components, resulting in low maintenance efficiency. This seriously affects the continuous and normal operation of energy storage liquid-cooled air conditioners and fails to meet the urgent needs of current energy storage facilities for efficient operation and maintenance.

[0005] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an electrical control box structure for a horizontal energy storage liquid-cooled air conditioner, which aims to solve the technical problems of poor waterproof sealing performance and inconvenience in opening the electrical control box for maintenance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An electrical control box structure for a horizontal energy storage liquid-cooled air conditioner includes a chassis, an electrical control box disposed within the chassis, a switching power supply, a control board, a drive board, a miniature circuit breaker, and an AC contactor disposed within the electrical control box. One side of the electrical control box has an opening that aligns with the inner side of the chassis. The inner side of the chassis has a corresponding inspection port, which is sealed by an inspection cover. The switching power supply provides power to the control board and drive board. The control board is electrically connected to the miniature circuit breaker and the AC contactor. The electrical control box has cable through-holes, each with a sealed waterproof cable connector installed.

[0009] As a further improvement to the above technical solution, the inner side of the opening of the electrical control box is the component mounting end face, the drive board is mounted on the component mounting end face, and a side frame is provided on the component mounting end face around the drive board. The control board is mounted on the side frame, so that the control board and the drive board are arranged side by side.

[0010] As a further improvement to the above technical solution, the switching power supply, miniature circuit breaker and AC contactor are disposed on the component mounting end face, and the component mounting end face is provided with a terminal block.

[0011] As a further improvement to the above technical solution, the outer back of the electrical control box is provided with heat dissipation fins located behind the drive board.

[0012] As a further improvement to the above technical solution, a waterproof box is provided on the outer back of the electrical control box, and a reactor is provided inside the waterproof box. The reactor is electrically connected to the AC contactor.

[0013] As a further improvement to the above technical solution, the electrical control box is provided with two flanges that fit against the inner side of the chassis. Each flange has two threaded holes. The chassis is provided with mounting holes corresponding to the threaded holes. The fixing screws pass through the mounting holes and connect to the corresponding threaded holes.

[0014] As a further improvement to the above technical solution, two positioning forks are fixedly provided on the lower edge of the outer back of the electrical control box. Each positioning fork is provided with a U-shaped locking position. Vertically extending limiting screws, the same number as the U-shaped locking positions, are welded on the inner bottom surface of the chassis. The positioning forks press against the inner bottom wall of the chassis and the limiting screws are engaged in the U-shaped locking positions. The heads of the limiting screws restrict the electrical control box from detaching from the chassis.

[0015] The beneficial effects of this utility model are as follows: The electrical control box structure provided by this utility model effectively prevents coolant splashing, condensation accumulation, and dust intrusion at key points where the wires pass through by installing sealed waterproof cable connectors in each cable through-hole. Compared with traditional electrical control boxes, it greatly reduces the risk of short circuits and corrosion damage to electrical control components caused by moisture and dust infiltration, effectively ensuring that the electrical control components are in a clean and dry operating environment, significantly extending the service life of the electrical control components, improving the reliability of the entire energy storage liquid-cooled air conditioning system, and reducing equipment downtime and maintenance frequency caused by electrical control component failures. In addition, the side opening of the electrical control box corresponds to the inspection port of the chassis and is equipped with an openable inspection cover. When internal components malfunction, maintenance personnel do not need to go through the trouble of disassembling numerous parts as with traditional complex electrical control boxes. Simply opening the inspection cover provides a relatively spacious and convenient operating space for accurate circuit troubleshooting and quick replacement of faulty components, greatly improving maintenance efficiency. Attached Figure Description

[0016] Figure 1 Schematic diagram of the structure of the electrical control box provided by this utility model Figure 1 .

[0017] Figure 2 Schematic diagram of the structure of the electrical control box provided by this utility model Figure 2 .

[0018] Figure 3 This is a schematic diagram of the electrical control box installed on the chassis.

[0019] Explanation of main component symbols: 1-Chassis, 11-Inspection port, 12-Inspection cover, 2-Electrical control box, 21-Cable through hole, 22-Component mounting end face, 23-Flanged edge, 24-Threaded hole, 25-Fixing screw, 31-Switching power supply, 32-Control board, 33-Drive board, 34-Miniature circuit breaker, 35-AC contactor, 36-Terminal block, 4-Side bracket, 5-Heat sink, 61-Waterproof box, 62-Reactor, 71-Positioning fork, 72-U-shaped slot, 8-Sealing gasket. Detailed Implementation

[0020] This utility model provides an electrical control box structure for a horizontal energy storage liquid-cooled air conditioner. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0021] Please see Figures 1 to 3 This utility model provides an electrical control box structure for a horizontal energy storage liquid-cooled air conditioner, including a chassis 1, an electrical control box 2 disposed within the chassis 1, a switching power supply 31, a control board 32, a drive board 33, a miniature circuit breaker 34, and an AC contactor 35 disposed within the electrical control box 2. One side of the electrical control box 2 has an opening that aligns with the inner side of the chassis 1. The inner side of the chassis 1 has a corresponding inspection port 11, which is sealed by an inspection cover 12. The switching power supply 31 provides power to the control board 32 and the drive board 33. The control board 32 is electrically connected to the miniature circuit breaker 34 and the AC contactor 35. The electrical control box 2 has cable through holes 21, each with a sealed waterproof cable connector.

[0022] Specifically, the switching power supply 31 converts the input AC power into stable DC power to provide power to other components that require DC power. Its input terminal is connected to an external AC power source, typically via a wire to the mains input line. Its output terminal is connected via wires to the power input interfaces of components requiring DC power, such as the driver board 33 and the control board 32.

[0023] The control board 32 and the drive board 33 are connected via signal lines to send control commands. The drive board 33 drives the relevant equipment according to the commands from the control board 32. The control board 32 also connects to components such as a miniature circuit breaker 34 and an AC contactor 35 to monitor and control the on / off state of the circuit. The control board 32 is connected to the control coil terminal of the AC contactor 35 via control signal lines. When it is necessary to control the on / off state of the circuit, the control board 32 sends a signal to the control coil of the AC contactor 35, causing the main contacts of the AC contactor 35 to close or open, thereby controlling the main circuit (e.g., the power supply circuit for high-power equipment such as compressors). The miniature circuit breaker 34 is installed at the input terminal of the main circuit to provide overload and short-circuit protection for the entire circuit. One end of it is connected to the external AC power input, and the other end is connected to the main contact input terminal of the AC contactor 35.

[0024] The electrical control box structure provided by this utility model effectively prevents coolant splashing, condensation accumulation, and dust intrusion at key points where the wiring passes through by installing sealed waterproof cable connectors in each cable through-hole 21. Compared with traditional electrical control boxes 2, it greatly reduces the risk of short circuits and corrosion damage to electrical control components caused by moisture and dust infiltration, effectively ensuring that the electrical control components are in a clean and dry operating environment, significantly extending the service life of the electrical control components, improving the reliability of the entire energy storage liquid-cooled air conditioning system, and reducing equipment downtime and maintenance frequency caused by electrical control component failures.

[0025] Furthermore, the side opening of the control box 2 corresponds to the inspection port 11 of the chassis 1, and is equipped with an openable inspection cover 12. When internal components malfunction, maintenance personnel do not need to go through the trouble of disassembling numerous parts as with traditional, complex control boxes 2. Simply opening the inspection cover 12 provides a relatively spacious and convenient operating space, enabling precise troubleshooting of circuits and rapid replacement of faulty components, significantly improving maintenance efficiency. This aligns with the current urgent need for energy storage facilities to efficiently maintain equipment and quickly restore normal operation, reducing maintenance costs and time losses caused by equipment failures.

[0026] The inner side of the opening of the electrical control box 2 is the component mounting end face 22. The drive board 33 is mounted on the component mounting end face 22. The component mounting end face 22 is provided with a side frame 4 located around the drive board 33. The control board 32 is mounted on the side frame 4, so that the control board 32 and the drive board 33 are arranged side by side. By directly mounting the drive board 33 on the component mounting end face 22 and mounting the control board 32 around the drive board 33 with the help of the side frame 4, the two are arranged side by side, which makes good use of the limited space resources inside the electrical control box 2. Compared with the traditional electrical control box 2 with randomly placed components and a messy layout, this compact and orderly design can accommodate more necessary electrical control components, avoid component crowding and interference caused by improper space planning, facilitate the miniaturization design of the chassis 1, and conform to the development trend of compact overall structure of energy storage equipment. Within the limited volume of the horizontal energy storage liquid-cooled air conditioning chassis 1, the integration of the electrical control system is maximized.

[0027] When electronic equipment is running, control boards 32 and 33, as well as other electronic control components, are prone to electromagnetic interference. Excessive interference can cause signal distortion and component malfunction. The parallel arrangement and appropriate use of side frames 4 allow for a relatively fixed and scientifically positioned relationship between the two components. This facilitates the addition of targeted shielding measures, such as placing electromagnetic shielding materials on or around the side frames 4, to suppress the outward spread of electromagnetic radiation, reduce the impact of electromagnetic interference between boards, ensure stable reception and processing of electrical signals by each electronic control component, improve the overall electromagnetic interference resistance of the electronic control system, and protect the horizontal energy storage liquid-cooled air conditioner's electronic control functions from electromagnetic fluctuations, resulting in higher operational reliability.

[0028] The switching power supply 31, miniature circuit breaker 34, and AC contactor 35 are mounted on the component mounting face 22, which is equipped with a terminal block 36. The terminal block 36 provides a unified and standardized interface platform for the wiring connections between various electrical control components and with external equipment. Components such as the switching power supply 31, miniature circuit breaker 34, and AC contactor 35 are connected to the terminal block 36 nearby, significantly shortening the wiring length, reducing unnecessary cable detours and crossings, reducing resistance accumulation due to excessive length and bending, and avoiding the risk of short circuits and open circuits caused by aging or damaged wiring. At the same time, the simplified wiring layout makes wiring operations more convenient for workers, reducing errors such as incorrect or missing connections caused by complex wiring, improving the first-time success rate of electrical control system assembly, and ensuring the accuracy and reliability of the initial electrical connections of the equipment.

[0029] As a key component in the control box 2, the driver board 33 continuously generates heat during operation. Therefore, heat dissipation fins 5 are provided on the outer back of the control box 2, behind the driver board 33. After the heat from the driver board 33 is transferred to the control box 2, the heat can be quickly conducted from the control box 2 to the heat dissipation fins 5. The heat dissipation fins 5 have a large surface area, which, compared to a planar structure, allows for full contact with the surrounding air, significantly increasing the heat dissipation area. When the air flows, it can carry away more heat, thereby efficiently reducing the temperature of the driver board 33 and maintaining it within a suitable operating temperature range. This avoids problems such as performance degradation, shortened lifespan, or even burnout of electronic components caused by overheating.

[0030] The outer back of the electrical control box 2 is provided with a waterproof box 61, and a reactor 62 is provided inside the waterproof box 61. The reactor 62 is electrically connected to the AC contactor 35. The main contact output terminal of the AC contactor 35 is connected to the reactor 62. The reactor 62 is mainly used to suppress harmonics and surge currents in the circuit. The output terminal of the reactor 62 is then connected to the power input terminal of the main load equipment of the air conditioner (such as compressor, fan motor, etc.) to provide processed AC power to these devices.

[0031] Furthermore, the electrical control box 2 is provided with two flanges 23 that fit against the inner side of the chassis 1. Each flange 23 has two threaded holes 24. The chassis 1 has mounting holes corresponding to the threaded holes 24. The fixing screws 25 pass through the mounting holes and connect to the corresponding threaded holes 24. During the operation of the horizontal energy storage liquid-cooled air conditioner, a certain degree of mechanical vibration will inevitably occur, originating from factors such as the operation of the internal fan, the start and stop of the compressor, and slight vibrations in the environment where the equipment is located. The two flanges 23 that fit tightly against the inner side of the chassis 1 increase the contact area between the electrical control box 2 and the chassis 1. With the fixing screws 25 passing through the corresponding mounting holes and threaded holes 24, a tight connection is achieved, firmly fixing the electrical control box 2 to the chassis 1. This stable installation structure can effectively disperse and buffer vibration energy, preventing the internal component solder joints of the electrical control box 2 from loosening, poor wiring contact, or component collision damage due to long-term vibration, ensuring the mechanical stability of the electrical control system and maintaining the continuous and reliable operation of the equipment.

[0032] To achieve a stable and reliable temporary fixation before fixing the electrical control box 2, two positioning forks 71 are fixed to the lower edge of the outer back of the electrical control box 2. Each positioning fork 71 has a U-shaped locking position 72. Vertically extending limiting screws, the same number as the U-shaped locking positions 72, are welded onto the inner bottom surface of the chassis 1. The positioning forks 71 press against the inner bottom wall of the chassis 1, and the limiting screws engage with the U-shaped locking positions 72. The heads of the limiting screws prevent the electrical control box 2 from detaching from the chassis 1. The assembly worker only needs to move the electrical control box 2 to the corresponding position on the chassis 1, align the U-shaped locking positions 72 on the positioning forks 71 with the limiting screws welded onto the inner bottom surface of the chassis 1, and then move the entire electrical control box 2 backward. During this process, the limiting screws will smoothly engage with the U-shaped locking positions 72, achieving quick and accurate positioning without the need for repeated manual adjustment of the electrical control box 2's position to align with the mounting holes, threaded holes 24, and other connection parts during the fixing process. This operation process is greatly simplified, effectively reducing assembly time and improving the installation efficiency of the electrical control box 2 on the production assembly line, which meets the needs of large-scale, high-efficiency production of energy storage equipment.

[0033] To improve sealing and waterproofing performance, the electrical control box 2 has a sealing gasket 8 on the mating surface with the chassis 1.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are 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, and therefore should not be construed as a limitation of this utility model.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A control box structure for a horizontal energy storage liquid-cooled air conditioner, characterized in that, The device includes a chassis, an electrical control box housed within the chassis, a switching power supply, a control board, a drive board, a miniature circuit breaker, and an AC contactor housed within the electrical control box. One side of the electrical control box has an opening that aligns with the inner side of the chassis. The inner side of the chassis has a corresponding access port, which is sealed by an access cover. The switching power supply provides power to the control board and drive board. The control board is electrically connected to the miniature circuit breaker and AC contactor. The electrical control box has cable access holes, each equipped with a sealed, waterproof cable connector.

2. The electrical control box structure of the horizontal energy storage liquid-cooled air conditioner according to claim 1, characterized in that, The inner side of the opening of the electrical control box is the component mounting end face. The drive board is mounted on the component mounting end face. The component mounting end face is provided with a side frame located around the drive board. The control board is mounted on the side frame, so that the control board and the drive board are arranged side by side.

3. The electrical control box structure of the horizontal energy storage liquid-cooled air conditioner according to claim 2, characterized in that, The switching power supply, miniature circuit breaker, and AC contactor are mounted on the component mounting surface, and the component mounting surface is provided with a terminal block.

4. The electrical control box structure of the horizontal energy storage liquid-cooled air conditioner according to claim 1, characterized in that, The outer back of the electrical control box has heat dissipation fins located behind the drive board.

5. The electrical control box structure of the horizontal energy storage liquid-cooled air conditioner according to claim 1, characterized in that, The outer back of the electrical control box is provided with a waterproof box, and a reactor is provided inside the waterproof box. The reactor is electrically connected to the AC contactor.

6. The electrical control box structure of the horizontal energy storage liquid-cooled air conditioner according to any one of claims 1-5, characterized in that, The electrical control box has two flanges that fit against the inner side of the chassis. Each flange has two threaded holes. The chassis has mounting holes corresponding to the threaded holes. The fixing screws pass through the mounting holes and connect to the corresponding threaded holes.

7. The electrical control box structure of the horizontal energy storage liquid-cooled air conditioner according to claim 6, characterized in that, Two positioning forks are fixedly provided on the lower edge of the outer back of the electrical control box. Each positioning fork is provided with a U-shaped locking position. Vertically extending limiting screws, the same number as the U-shaped locking positions, are welded on the inner bottom surface of the chassis. The positioning forks press against the inner bottom wall of the chassis and the limiting screws are engaged in the U-shaped locking positions. The heads of the limiting screws restrict the electrical control box from detaching from the chassis.

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