An electrical cabin and a liquid-cooled energy storage cabinet

Abstract

The present patent application belongs to the technical field of energy storage equipment, and specifically relates to an electrical cabin, comprising an upper cavity and a lower cavity, wherein a partition is arranged between the upper cavity and the lower cavity to prevent hot air from flowing back, a front door with a plurality of first mesh holes is arranged at the front end of the electrical cabin, and a back plate with a plurality of second mesh holes is arranged at the rear end of the electrical cabin. When the electrical cabin dissipates heat, air enters from the front door, enters the upper cavity and the lower cavity respectively, and then flows out from the back plate; a PCS is installed in the upper cavity, and an openable rotating plate is arranged at the front end of the upper cavity, and the front and rear sides of the rotating plate are used to install electrical components; an installation component for installing liquid cooling units of different models is arranged at the bottom of the lower cavity; its purpose is: by installing the liquid cooling unit in the lower cavity and separating it from the PCS, when heat is dissipated, the hotter airflow in the lower cavity is not easy to enter the upper cavity through the partition, thereby ensuring the heat dissipation efficiency of the PCS and reducing the energy consumption required by the fan in the upper cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage equipment, and in particular to an electrical cabin and a liquid-cooled energy storage cabinet. Background Art

[0002] An outdoor energy storage cabinet is an outdoor energy storage device that stores electrical energy and releases it when needed to supply equipment. It mainly consists of an electrical compartment and a battery compartment.

[0003] The electrical compartment is equipped with a liquid cooling unit, UPS (uninterruptible power supply) and PCS (power conversion system). The liquid cooling unit and PCS are equipped with fans for heat dissipation. At present, outdoor energy storage cabinets often have the following problems: 1. The electrical compartment generally does not separate the liquid cooling unit from other equipment. The temperature near the liquid cooling unit is often higher. The hot air generated during heat dissipation will cause the temperature of other equipment to rise; 2. The models of liquid cooling units that can be installed are often fixed, and different models of liquid cooling units cannot be selected for different outdoor environments: 3. The electrical components inside the electrical compartment are scattered, which makes maintenance difficult. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, one of the objects of the present invention is to provide an electrical cabin, which installs a liquid cooling unit in the lower cavity and separates it from the PCS. During heat dissipation, the partition makes it difficult for the hotter air flow in the lower cavity to enter the upper cavity, thereby ensuring the heat dissipation efficiency of the PCS; electrical components are installed by setting a rotating door to facilitate maintenance; and different models of liquid cooling units are selected for different outdoor environments by setting installation components.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An electrical compartment comprises an upper cavity and a lower cavity, a partition is arranged between the upper cavity and the lower cavity to prevent hot air from flowing back, a front door with a plurality of first mesh holes is arranged at the front end of the electrical compartment, and a back plate with a plurality of second mesh holes is arranged at the rear end of the electrical compartment, when the electrical compartment dissipates heat, air enters from the front door, enters the upper cavity and the lower cavity respectively, and then flows out from the back plate;

[0007] The upper cavity is equipped with a PCS, and the front end of the upper cavity is provided with an openable rotating plate, and the front and rear sides of the rotating plate are used to install electrical components;

[0008] The bottom of the lower cavity is provided with mounting components for mounting liquid cooling units of different models.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. By installing the liquid cooling unit in the lower cavity and separating it from the PCS, the partition makes it difficult for the hot air in the lower cavity to enter the upper cavity during heat dissipation, thus ensuring the heat dissipation efficiency of the PCS and reducing the energy consumption required by the fan in the upper cavity;

[0011] 2. By setting an openable rotating plate, the electrical components that are frequently inspected are installed on the front and rear sides of the rotating plate, which saves the installation space in the electrical compartment and facilitates maintenance;

[0012] 3. By setting up and installing installation components of different types of liquid cooling units, it is convenient to select liquid cooling units with different refrigeration effects for different outdoor environments (high and low ambient temperatures), while meeting cooling needs and reducing energy consumption as much as possible.

[0013] As a preferred embodiment of the present invention, a second venetian blind is fixedly connected to the inner side of the back panel, the second venetian blind is located in the upper cavity, a mounting plate is fixedly connected to the inner side of the second venetian blind, a plurality of mounting holes are provided on the mounting plate, and the mounting holes are used to install a cooling fan.

[0014] Beneficial effects:

[0015] 1. Since the waterproof requirement of liquid cooling units is usually lower than that of PCS, and the heat dissipation requirement of liquid cooling units is usually higher than that of PCS, a second louver is provided on the inner side of the back plate of the upper cavity. Although the second louver reduces the ventilation volume, it significantly improves the waterproof effect, and satisfies the heat dissipation requirement while meeting the waterproof requirement of PCS;

[0016] 2. When the outdoor temperature is high, a cooling fan can be added to improve the heat dissipation effect of the upper cavity.

[0017] As a preferred embodiment of the present invention, a plurality of spoilers are installed on the inner side of the mounting plate along vertical intervals, the spoilers are inclined downward toward the side away from the second mesh, and the width of the plurality of spoilers gradually decreases from top to bottom. The airflow through the PCS passes through the plurality of spoilers, and passes through the mounting hole and the second mesh.

[0018] Beneficial effects: Three heat dissipation schemes are designed for different outdoor environments. When the outdoor temperature is low, only the mounting plate is used. Part of the heat dissipation airflow is discharged through the mounting hole, and part of the hot air hits the mounting plate and flows back obliquely upward to the vicinity of the PCS; when the outdoor temperature is moderate, the above-mentioned spoiler is added to the mounting plate. According to the direction of the return airflow (the airflow flows obliquely upward toward the PCS), the spoiler gradually widens from bottom to top, so that the return airflow is gradually blocked by the inner side of the spoiler and is guided into the mounting hole, thereby improving the heat dissipation effect; when the outdoor temperature is high, an additional fan is set in the mounting hole, and the heat dissipation effect can be further improved in conjunction with the spoiler.

[0019] As a preferred embodiment of the present invention, the electrical compartment is fixedly connected to the upper cavity with two vertical beams, the partition is fixedly connected to the lower ends of the two vertical beams, and the two vertical beams are fixedly connected to support plates above the partition;

[0020] The PCS is fixedly installed between two vertical beams and located above the partition, and a UPS is fixedly installed on the support plate;

[0021] The support plate is fixedly connected with an airflow guide plate, and is located above the spoiler plate. The airflow guide plate is tilted upward toward the back plate, and the airflow passing through the UPS passes between the spoiler plate and the airflow guide plate.

[0022] Beneficial effects:

[0023] 1. The PCS and UPS are separated by the support plate. Since the UPS is set above the PCS and is blocked by the spoiler and airflow guide plate, the rainwater that penetrates into the upper cavity through the second louver cannot enter the vicinity of the PCS, thereby improving the waterproof effect of the UPS;

[0024] 2. The airflow can pass between the airflow guide plate and the spoiler, and then pass through the second louver, which reduces the distribution area of ​​the second mesh holes on the back plate, increases the structural strength of the back plate, and makes it difficult for rainwater to enter the upper cavity through the back plate.

[0025] As a preferred embodiment of the present invention, a first shutter is fixedly connected to the inner side of the front door, and the first shutter is located at the front end of the upper cavity and the lower cavity. The inner side of the back panel is fixedly connected to a mesh plate, and the mesh plate is located in the lower cavity. The mesh holes of the mesh plate are smaller than the aperture of the second mesh holes.

[0026] Beneficial effects:

[0027] 1. The electrical compartment is divided into an upper cavity and a lower cavity by a partition. Since the PCS has a lower heat dissipation requirement and a higher waterproof requirement, the upper cavity is waterproofed by setting a first louver and a second louver. Compared with the mesh plate, the ventilation volume is reduced, but the waterproof performance is guaranteed. The lower cavity is prevented from entering by foreign objects by setting a mesh plate, thereby ensuring the heat dissipation performance;

[0028] 2. The mesh plate and the back plate form a double-layer mesh plate, which improves the dustproof effect. Since the mesh hole of the mesh plate is smaller than the aperture of the second mesh hole, it is easy to observe whether the mesh plate is blocked.

[0029] As a preferred embodiment of the present invention, the first and second venetian blinds both include a connecting frame, the connecting frame is fixedly mounted on the front door or the back panel, a plurality of first plates are vertically spaced and mounted on the connecting frame, a first inclined plate is fixedly connected to the lower end of the first plate, and the first inclined plate is inclined from top to bottom toward the corresponding second mesh;

[0030] The connecting frame is fixedly connected with a second plate body between each first plate body and the second mesh, the second plate body is arranged vertically, and the two side plates of the second plate body are fixedly connected with a second inclined plate and a third inclined plate, the third inclined plate is arranged parallel to the first inclined plate, the lower end of the third inclined plate rests on the front door or the back plate, and the second inclined plate is inclined from top to bottom toward a side away from the corresponding second mesh hole;

[0031] The lower end of the third inclined plate is vertically fixedly connected with a third plate body, and the bottom of the third plate body is lower than the top of the adjacent second plate body.

[0032] Beneficial effect: By setting the third plate body, the adjacent first plate body, second plate body, third plate body, first inclined plate, second inclined plate, and third inclined plate form an air channel to guide the airflow during heat dissipation. The airflow passing through the PCS first passes between two adjacent first inclined plates, and then passes between two adjacent second inclined plates, and is blocked by the second plate body. The airflow rises and passes through the second inclined plate and the third inclined plate above, and is finally discharged between the third inclined plate and the third plate body. Since the first inclined plate and the third inclined plate are inclined in the opposite direction to the second inclined plate, the airflow path is extended and the path is curved, which prevents hot air from flowing back to the vicinity of the PCS, thereby ensuring the waterproof performance and improving the heat dissipation effect.

[0033] As a preferred embodiment of the present invention, a circuit breaker is installed at the front end of the rotating plate, a shielding plate is detachably connected between the first shutter and the rotating plate, the shielding plate is provided with a through groove and a plurality of heat dissipation holes in the upper cavity, the circuit breaker passes through the through groove, a waterproof plate is fixedly connected to the outer side of each heat dissipation hole of the shielding plate, and the shielding plate is provided with a plurality of third mesh holes in the lower cavity.

[0034] Beneficial effects:

[0035] 1. By setting up a shielding plate, the internal circuit is shielded, which has the functions of beauty and dust prevention;

[0036] 2. When the circuit breaker needs to be operated, open the front door. Since the circuit breaker is located in the through slot, it can be operated directly. When the circuit breaker needs to be repaired or replaced, the shielding plate can be removed for operation. When the UPS or electrical components need to be repaired, the rotating plate can be rotated to expose the back of the rotating plate, which is more convenient to operate.

[0037] 3. By setting heat dissipation holes and the third mesh, in conjunction with the waterproof plate, the upper and lower cavities can be dissipated in a targeted manner to meet the waterproofing and heat dissipation requirements of different equipment.

[0038] The second object of the present invention is to provide a liquid-cooled energy storage cabinet, comprising the electrical compartment described above, and also comprising a battery compartment, wherein the battery compartment is arranged at the upper end of the electrical compartment, and the inner sides of the battery compartment are fixedly connected with support frames, and the support frames are used to install battery packs;

[0039] Welding holes are opened on both sides of the battery compartment, and liquid cooling pipelines are welded in the two welding holes. The two liquid cooling pipelines are located between the support frame and the inner wall of the battery compartment, and extend vertically to the bottom wall of the electrical compartment. A main pipeline is fixedly connected to the outer side of the lower end of the electrical compartment, and the main pipeline is connected to the two liquid cooling pipelines.

[0040] Beneficial effects:

[0041] 1. By setting liquid cooling pipes on both sides of the battery compartment, the heat dissipation efficiency of the battery compartment is improved;

[0042] 2. By presetting welding holes on the battery compartment, when installing the liquid-cooled energy storage cabinet, first pass the liquid cooling pipe through the welding hole and connect it with the main pipe at the bottom. After welding, assemble the electrical compartment and install the battery pack. Compared with installing the battery pack first and then installing the liquid cooling pipe, the assembly is more convenient and more efficient.

[0043] As a preferred embodiment of the present invention, two fire extinguishers are arranged inside the door of the battery compartment, and the two fire extinguishers are connected with thermistors. The two thermistors are arranged in an S-shaped cross-overlapping manner. When the temperature inside the battery compartment reaches a preset temperature, the thermistor causes the fire extinguisher to open.

[0044] Beneficial effects: By setting up two fire extinguishers, the fire extinguishing speed of the fire extinguisher is guaranteed. By staggering the two thermistors, the two thermistors are arranged in a cross-overlapping manner, the detection area is increased, and single-point detection is linked to the eruption. When a single battery pack catches fire, the temperature in the battery compartment rises locally. Due to the S-shaped thermistor, the detection range is large and the response is fast. In addition, since the two thermistors have multiple intersection points, it is guaranteed that the two fire extinguishing equipment can be started in time (simultaneously) to minimize losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic diagram of the external structure of an embodiment of a liquid-cooled energy storage cabinet of the present invention;

[0046] Figure 2 It is a schematic diagram of the internal structure of an embodiment of a liquid-cooled energy storage cabinet of the present invention;

[0047] Figure 3 The present invention Figure 2 A magnified view of the structure at A;

[0048] Figure 4 The present invention Figure 2 A magnified view of the structure at B;

[0049] Figure 5 The present invention Figure 2 A magnified view of the structure at C;

[0050] Figure 6It is a schematic diagram of the assembly of liquid cooling pipelines in the embodiment of the liquid cooling energy storage cabinet of the present invention;

[0051] Figure 7 Schematic diagram of the distribution of thermistor wires in the embodiment of the liquid-cooled energy storage cabinet of the present invention;

[0052] Figure 8 Schematic diagram of the airflow of the second louver in the liquid-cooled energy storage cabinet embodiment of the present invention.

[0053] The reference numerals include: electrical compartment 1, back panel 11, front door 12, partition 13, upper cavity 131, lower cavity 132, first guide plate 133, drainage groove 134, upper blocking plate 135, lower blocking plate 136, first mesh 14, first louver 141, connecting frame 1411, first plate 1412, first inclined plate 1413, second plate 1414, second inclined plate 1415, third inclined plate 1416, third plate 1417, second mesh 142, second heat dissipation zone 15, second louver 151, mounting plate 152, spoiler 153, third heat dissipation zone 16, mesh plate 161, support plate 171, air flow guide plate 172, rotating plate 181, shielding plate 182, heat dissipation holes 183, waterproof plate 184, third mesh 185, circuit breaker 186, battery compartment 2, main line 21, liquid cooling line 22, fire extinguisher 23, mounting groove 24. DETAILED DESCRIPTION

[0054] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0055] In the description of the present application, the terms "first", "second", etc. are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0056] See also Figure 1 and Figure 2 The electrical compartment 1 of this embodiment includes an upper cavity 131 and a lower cavity 132, a partition 13 is provided between the upper cavity 131 and the lower cavity 132 to prevent hot air from flowing back, a front door 12 with a plurality of first mesh holes 14 is provided at the front end of the electrical compartment 1, and a back plate 11 with a plurality of second mesh holes 152 is provided at the rear end of the electrical compartment 1. When the electrical compartment 1 dissipates heat, air enters from the front door 12, enters the upper cavity 131 and the lower cavity 132 respectively, and then flows out from the back plate 11;

[0057] The upper cavity 131 is installed with a PCS, and the bottom of the lower cavity 132 is provided with a mounting assembly for installing different types of liquid cooling units; the mounting assembly is composed of multiple mounting parts, and the widths of different types of liquid cooling units are different. Different liquid cooling units can be installed by adjusting the spacing between the mounting parts. Multiple threaded holes are opened on the left and right sides of the bottom of the electrical compartment 1. According to the different specifications of the liquid cooling unit, corresponding mounting parts are installed on the corresponding threaded holes. The left and right mounting parts are close to the side walls of the liquid cooling unit and are then fixed with bolts, so that the electrical compartment can be compatible with different liquid cooling units.

[0058] Among them, see Figure 2 The inner side of the front door 12 is fixedly connected with a first louver 141, the inner side of the back plate 11 is fixedly connected with a second louver 151, the second louver 141 is located in the upper cavity 131, the inner side of the back plate 11 is fixedly connected with a mesh plate 161, the mesh plate 161 is located in the lower cavity 132, the mesh holes on the mesh plate 161 are smaller than the second mesh holes 142, so it is easy to observe whether the mesh plate 161 is blocked; due to the different waterproof requirements of the liquid cooling unit and the PCS, and the different heat generated, the electrical compartment 1 is divided into the upper cavity 131 and the lower cavity by the partition 13 body 132; when the electrical compartment 1 is working, since the liquid cooling unit and the PCS themselves dissipate heat through the fan, air enters through the second mesh hole 142 of the front door 12, passes through the first louver 141, and then enters the upper cavity 131 and the lower cavity 132 respectively. After passing through the PCS and the liquid cooling unit, it passes through the second louver 151 and the mesh plate 161 respectively, and is discharged from the second mesh hole 142 of the back plate 11; rainwater can only enter the electrical compartment 1 through the second mesh hole 142, and passes through the first louver 141 and the second louver 151 to prevent rainwater from entering the upper cavity 131.

[0059] In this embodiment, the second mesh holes 142 are hexagonal holes. The hexagonal holes have high strength and stability and can ensure good heat dissipation performance. In other embodiments, square holes or round holes can be used.

[0060] Among them, see Figure 3 The first shutter 141 and the second shutter 151 both include a connection frame 1411, which is fixedly mounted on the front door 12 or the back panel 11, and a plurality of first plates 1412 are vertically spaced apart on the connection frame 1411, and a first inclined plate 1413 is fixedly connected to the lower end of the first plate 1412, and the first inclined plate 1413 is inclined from top to bottom toward the corresponding second mesh 142;

[0061] The connecting frame 1411 is fixedly connected with a second plate body 1414 between each first plate body 1412 and the second mesh hole 142. The second plate body 1414 is vertically arranged. The two side panels of the second plate body 1414 are fixedly connected with a second inclined plate 1415 and a third inclined plate 1416. The third inclined plate 1416 is arranged parallel to the first inclined plate 1413. The lower end of the third inclined plate 1416 is against the front door 12 or the back plate 11. The second inclined plate 1415 is inclined from top to bottom toward the side away from the corresponding second mesh hole 142. The lower end of the third inclined plate 1416 is vertically fixedly connected with the third plate The third plate body 1417 has a bottom lower than the top of the adjacent second plate body 1414, and a drainage channel is formed between the first inclined plate 1413 and the second inclined plate 1415; when rainwater enters the upper cavity 131 through the second mesh 142, it is first blocked by the third inclined plate 1416 and the second plate body 1414, flows downward along the third inclined plate 1416, and flows out through the second mesh 142. The first plate body 1412 and the first inclined plate 1413 are provided to block the rainwater for the second time, and guide the rainwater to the bottom of the connecting frame 1411 through the drainage channel, so as to prevent the rainwater from entering the upper cavity 131;

[0062] See also Figure 8 By setting the third plate body 1417, the adjacent first plate body 1412, the second plate body 1414, the third plate body 1417, the first inclined plate 1413, the second inclined plate 1415, and the third inclined plate 1416 form an air channel to guide the airflow during heat dissipation. The airflow passing through the PCS first passes between two adjacent first inclined plates 1413, and then passes between two adjacent second inclined plates 1415, and is blocked by the second plate body 1414. The airflow rises and passes through the upper second inclined plate 1415 and the third inclined plate 1416, and finally is discharged between the third inclined plate 1416 and the third plate body 1417. Since the first inclined plate 1413 and the third inclined plate 1416 are inclined in the opposite direction to the second inclined plate 1415, the airflow path is extended and the path is bent, which prevents hot air from flowing back to the vicinity of the PCS, ensuring the waterproof performance while improving the heat dissipation effect.

[0063] Among them, see Figure 5The bottom of the electrical compartment 1 is provided with a drainage groove 134 for drainage. The partition 13 is fixedly connected with a first guide plate 133. The first guide plate 133 is located above the mesh plate 161. The first guide plate 133 is inclined from top to bottom toward the back plate 11. There is a gap between the first guide plate 133 and the back plate 11. Rainwater on the partition 13 flows along the first guide plate 133 to the lower cavity 132, and flows along the mesh plate 161 to the drainage groove 134. ; By setting the first guide plate 133, when rainwater penetrates into the upper cavity 131 through the second louver 141, the rainwater flows along the second louver 141 to the first guide plate 133. Since the first guide plate 133 is inclined, the rainwater flows downward along the first guide plate 133, flows to the top of the mesh plate 161, and then flows along the side wall of the mesh plate 161 to the drainage groove 134, draining the upper cavity 131, preventing rainwater from infiltrating for a long time and remaining in the upper cavity 131;

[0064] Among them, see Figure 5 An upper blocking plate 135 and a lower blocking plate 136 are fixedly connected to the back plate 11, and the upper blocking plate 135 and the lower blocking plate 136 are respectively located at the upper and lower ends of the first guide plate 133, and are spaced from the first guide plate 133; due to the high heat generated by the liquid cooling unit, rainwater on the mesh plate 161 will be vaporized, and the upper blocking plate 135 and the lower blocking plate 136 are provided to prevent water vapor from rising and entering the upper cavity 131; the path for the hot air in the lower cavity 132 to enter the upper cavity 133 is extended, and the path is curved, so that the hot air in the lower cavity 132 is not easy to enter the upper cavity 131, so as to prevent a large amount of hot air from heating up the upper cavity, affecting the operation of the electronic components in the upper cavity and reducing the service life.

[0065] See also Figure 5 The connection frame 1411 is fixedly connected to a mounting plate 152 in the second heat dissipation area 15, and a plurality of mounting holes are opened on the mounting plate 152, and the mounting holes are used to install a cooling fan; a plurality of spoilers 153 are vertically spaced apart on a side of the mounting plate 152 away from the second mesh hole 142, and the spoilers 153 are inclined toward the side away from the second mesh hole 142, and the width of the plurality of spoilers 153 gradually decreases from top to bottom, and the airflow passing through the PCS passes through the plurality of spoilers 153 and passes through the mounting holes and the second mesh hole 142.

[0066] According to the heat dissipation requirements, three solutions can be selected from low to high heat dissipation effects: 1. Do not install the spoiler 153 and the cooling fan; 2. Install the spoiler 153; 3. Install the cooling fan and the spoiler 153.

[0067] Among them, see Figure 5The electrical compartment is fixedly connected to two vertical beams on the upper cavity 131, the partition 13 is fixedly connected to the lower ends of the two vertical beams, the two vertical beams are fixedly connected to a support plate 171 above the partition 13, the PCS is fixedly installed between the two vertical beams and is located above the partition 13, a UPS is fixedly installed on the support plate 171, an airflow guide plate 172 is fixedly connected to the support plate 171, the inclination direction of the second inclined plate 1415 is opposite to the inclination direction of the spoiler 153, and is located above the spoiler 153, the airflow passing through the UPS passes between the spoiler 153 and the airflow guide plate 172, and passes through the mounting hole and the second mesh 142.

[0068] Among them, see Figure 4 A rotating plate 181 is rotatably installed on the vertical beam, and the rotating plate 181 is located at the front end of the PCS. Electrical components are installed at the front end and back of the rotating plate 181. A circuit breaker 186 is installed at the front end of the rotating plate 181. A shielding plate 182 is detachably connected between the first shutter 141 and the rotating plate 181. The shielding plate 182 is provided with a through slot, and the circuit breaker 186 passes through the through slot; when it is necessary to operate the circuit breaker 186, after opening the front door 12, since the circuit breaker 186 is located in the through slot, the operation can be directly performed. When it is necessary to repair and replace the circuit breaker 186, the shielding plate 182 can be removed for operation. When it is necessary to repair the UPS or electrical components, the rotating plate 181 is rotated to expose the back of the rotating plate 181, which is more convenient to operate.

[0069] Among them, see Figure 4 The shielding plate 182 is provided with a plurality of heat dissipation holes 183 on the upper cavity 131, and a waterproof plate 184 is fixedly connected to the outer side of each heat dissipation hole 183 of the shielding plate 182, and a plurality of third mesh holes 185 are opened on the lower cavity 132 of the shielding plate 182; by providing the heat dissipation holes 183 and the third mesh holes 185, in cooperation with the waterproof plate 184, the upper cavity 131 and the lower cavity 132 are dissipated in a targeted manner to meet the waterproof and heat dissipation requirements of different equipment.

[0070] In this embodiment, clamps are installed inside the side walls and bottom walls of the electrical compartment 1 for clamping cables. The cables are arranged along the inner walls and side walls, which makes wiring more convenient and will not be interfered when opening the rotating plate 181 during maintenance.

[0071] The use principle and method of this embodiment are as follows:

[0072] When heat dissipation is performed, air enters through the second mesh hole 142 of the front door 12, passes through the first louver 141, part of the air passes through the waterproof plate 184 and the heat dissipation hole 183 to enter the upper cavity 131, and the other part of the air passes through the third mesh hole 185 to enter the lower cavity 132. The air in the upper cavity 131 dissipates heat for the UPS and the PCS respectively. The airflow passing through the UPS passes between the spoiler 153 at the top and the airflow guide plate 172, and is combined with the airflow passing through the PCS, and is discharged after passing through the second louver 151. The air in the lower cavity 132 dissipates heat for the liquid cooling unit and is discharged after passing through the mesh plate 161.

[0073] The electrical compartment 1 is divided into an upper cavity 131 and a lower cavity 132 by a partition 13. Since the PCS has lower heat dissipation requirements and higher waterproof requirements, the upper cavity 131 is waterproofed by setting a first louver 141 and a second louver 151, which reduces the ventilation volume compared to the mesh 161, but ensures waterproofness. The lower cavity 132 prevents foreign matter from entering by setting a mesh 161, thereby ensuring heat dissipation performance.

[0074] See also Figure 6 The liquid-cooled energy storage cabinet of the embodiment of the present invention includes the electrical compartment 1 described above, and also includes a battery compartment 2, wherein the battery compartment 2 is arranged at the upper end of the electrical compartment 1, and the inner sides of the battery compartment 2 are fixedly connected with support frames, and the support frames are used to install the battery pack;

[0075] Welding holes are provided on both sides of the battery compartment 2, and liquid cooling pipes 22 are welded in the two welding holes. The two liquid cooling pipes 22 are located between the support frame and the inner wall of the battery compartment 2, and extend vertically to the bottom wall of the electrical compartment 1. A main pipe 21 is fixedly connected to the outer side of the lower end of the electrical compartment 1, and the main pipe 21 is connected to the two liquid cooling pipes 22.

[0076] In this embodiment, the shell of the electrical compartment 1 is welded by a bottom plate, a side plate, and a top plate. The bottom plate and the side plate are provided with mounting holes for inserting liquid cooling pipes. After the pipes, the side plates, and the bottom plate are assembled, the pipes are welded and fixed to the electrical compartment 1. The installation is performed by welding without the need for additional mounting parts. Compared with the method of installing the electrical compartment 1 first and then laying the pipes, the internal space of the electrical compartment 1 is small after the assembly is completed, and the operation is limited when installing the pipes. The main pipe penetrates into the electrical compartment 1 from the bottom of the bottom plate, and then connects the two liquid cooling pipes. The two liquid cooling pipes are respectively Do not extend to the inner walls of the two side panels. After welding is completed, the side branch pipe is located between the support frame and the outer shell, which does not affect the assembly of other components inside the electrical compartment 1; after welding is completed, install rock wool, rock wool sealing plate, internal battery tray, electrical compartment 1 support beam, etc. This part is installed with screws, and the door panel is hinged. After the electrical compartment 1 is assembled, install the internal electrical components; first install the internal equipment of the electrical compartment 1, such as liquid cooling units, PCS, UPS and other equipment; at the same time, you can install small electrical parts such as door panel buttons, sound and light alarms, and finally install the battery pack.

[0077] See also Figure 7 , wherein two fire extinguishers 23 are arranged on the inner side of the door of the battery compartment 2, and the two fire extinguishers 23 are connected with thermal wires, and the two thermal wires are arranged in an S-shaped cross-overlap manner ( Figure 6 The middle dotted line is the position of the thermal line). When the temperature in the battery compartment 2 reaches a preset temperature, the thermal line causes the fire extinguisher 23 to open.

[0078] In this embodiment, a mounting groove 24 is opened on the door body, and an audible and visual alarm and an antenna are installed in the mounting groove 24. The audible, optical and electronic signals and the antenna are centrally installed, and the transmission is barrier-free. Compared with installing the antenna on the top of the electrical compartment 1, the audible and visual alarm has a better protective effect on the antenna. The audible and optical alarm is installed in the battery compartment 2, so that the louver area of ​​the battery compartment 2 is increased as much as possible, thereby ensuring the heat dissipation efficiency.

[0079] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An electrical compartment, characterized in that: The electrical compartment comprises an upper cavity and a lower cavity, wherein a partition is provided between the upper cavity and the lower cavity to prevent hot air from flowing back, a front door having a plurality of first mesh holes is provided at the front end of the electrical compartment, and a back plate having a plurality of second mesh holes is provided at the rear end of the electrical compartment. When the electrical compartment dissipates heat, air enters from the front door, enters the upper cavity and the lower cavity respectively, and then flows out from the back plate; The upper cavity is equipped with a PCS, and the front end of the upper cavity is provided with an openable rotating plate, and the front and rear sides of the rotating plate are used to install electrical components; The bottom of the lower cavity is provided with mounting components for mounting liquid cooling units of different models.

2. The electrical compartment according to claim 1, characterized in that: A second louver is fixedly connected to the inner side of the back plate, the second louver is located in the upper cavity, a mounting plate is fixedly connected to the inner side of the second louver, a plurality of mounting holes are provided on the mounting plate, and the mounting holes are used to install a cooling fan.

3. The electrical compartment according to claim 2, characterized in that: A plurality of spoilers are installed at vertical intervals on the inner side of the mounting plate. The spoilers are inclined downward toward the side away from the second mesh. The width of the plurality of spoilers gradually decreases from top to bottom. The airflow passing through the PCS passes through the plurality of spoilers, the mounting holes and the second mesh.

4. The electrical compartment according to claim 3, characterized in that: The electrical compartment is fixedly connected to the upper cavity with two vertical beams, the partition is fixedly connected to the lower ends of the two vertical beams, and the two vertical beams are fixedly connected to support plates above the partition; The PCS is fixedly installed between two vertical beams and located above the partition, and a UPS is fixedly installed on the support plate; The support plate is fixedly connected with an airflow guide plate, and is located above the spoiler plate. The airflow guide plate is tilted upward toward the back plate, and the airflow passing through the UPS passes between the spoiler plate and the airflow guide plate.

5. The electrical compartment according to claim 2, characterized in that: The inner side of the front door is fixedly connected with a first shutter, which is located at the front end of the upper cavity and the lower cavity. The inner side of the back panel is fixedly connected with a mesh plate, which is located in the lower cavity, and the mesh holes of the mesh plate are smaller than the aperture of the second mesh holes.

6. The electrical compartment according to claim 5, characterized in that: The first and second venetian blinds each include a connection frame, the connection frame is fixedly mounted on the front door or the back panel, a plurality of first plates are vertically spaced and mounted on the connection frame, a first inclined plate is fixedly connected to the lower end of the first plate, and the first inclined plate is inclined from top to bottom toward the corresponding second mesh; The connecting frame is fixedly connected with a second plate body between each first plate body and the second mesh, the second plate body is vertically arranged, and the two side panels of the second plate body are fixedly connected with a second inclined plate and a third inclined plate, the third inclined plate is arranged parallel to the first inclined plate, the lower end of the third inclined plate is against the front door or the back plate, and the second inclined plate is inclined from top to bottom toward the side away from the corresponding second mesh hole; the lower end of the third inclined plate is vertically fixedly connected with the third plate body, and the bottom of the third plate body is lower than the top of the adjacent second plate body.

7. The electrical compartment according to claim 5, characterized in that: A circuit breaker is installed at the front end of the rotating plate, and a shielding plate is detachably connected between the first shutter and the rotating plate. The shielding plate is provided with a through groove and a plurality of heat dissipation holes in the upper cavity, and the circuit breaker passes through the through groove. A waterproof plate is fixedly connected to the outer side of each heat dissipation hole of the shielding plate, and the shielding plate is provided with a plurality of third mesh holes in the lower cavity.

8. A liquid-cooled energy storage cabinet, characterized in that: The electrical compartment comprises the electrical compartment according to any one of claims 1 to 7, further comprising a battery compartment, wherein the battery compartment is arranged at the upper end of the electrical compartment, and support frames are fixedly connected to both sides of the interior of the battery compartment, and the support frames are used to install the battery pack; Welding holes are opened on both sides of the battery compartment, and liquid cooling pipelines are welded in the two welding holes. The two liquid cooling pipelines are located between the support frame and the inner wall of the battery compartment, and extend vertically to the bottom wall of the electrical compartment. A main pipeline is fixedly connected to the outer side of the lower end of the electrical compartment, and the main pipeline is connected to the two liquid cooling pipelines.

9. The liquid-cooled energy storage cabinet according to claim 8, characterized in that: Two fire extinguishers are arranged on the inner side of the door of the battery compartment, and the two fire extinguishers are connected with thermal wires, which are arranged in an S-shaped cross-overlap manner. When the temperature in the battery compartment reaches a preset temperature, the thermal wires cause the fire extinguishers to open.

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