Thermal management unit

Abstract

The invention discloses a heat management unit which is installed on the top of a battery energy storage cabinet. Comprising a machine shell, and the interior of the machine shell is divided into a heat management control area and a fan mounting area; a control box is rotationally mounted in the heat management control area, and the control box can be turned over by 90 degrees; a plurality of fans and a mounting frame are arranged in the fan mounting area, and the mounting frame is fixed on the shell through two groups of bolts in different directions; the front side plate, the left side plate and the right side plate of the machine shell are provided with air inlet areas. The rear side plate and the top plate of the machine shell are provided with air outlet areas. The control box is arranged to be of a turnover structure, and can be flexibly switched between a horizontal working state and a vertical maintenance state; the fixing bolts of the fan mounting rack are divided into two groups, the upper bolts are directly fixed on the rear side plate of the shell, and the lower bolts and the grounding bolts are fixed on the bottom plate of the shell; and an air outlet structure is concentrated on the rear side of the rear side plate and the rear side of the top plate, so that the service life of the unit is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal management, in particular to a thermal management unit. BACKGROUND

[0002] As the core equipment for storing and releasing electric energy, the battery energy storage cabinet will continuously generate heat when the battery modules inside it are charging and discharging. With the increase of energy storage capacity (such as large container type and household high-density energy storage systems), the heat generation per unit volume increases significantly, so a thermal management unit is needed to regulate the battery temperature through refrigeration, heating, and heat dissipation to ensure stable operation of the system.

[0003] The existing thermal management unit has the following disadvantages: Ventilation is blocked: Most units are placed in a sealed space below the battery energy storage cabinet, with poor ventilation conditions. The unit uses a front-side air inlet and rear-side air outlet structure, further exacerbating the problem. The fresh cold air intake of the air inlet hole in the sealed space is insufficient, and the hot air discharged from the air outlet hole is prone to stagnation and circulation, causing the unit to be blocked and the working temperature to rise.

[0004] High risk of interface sealing and installation: The unit is electrically connected to the energy storage cabinet through electrical interfaces and exchanges heat through multiple liquid cooling interfaces, and all interfaces are designed on the front of the unit. During installation, each interface needs to be sealed separately, and the dispersed layout makes the sealing process tedious and difficult to install. At the same time, the large number of interfaces increases the number of leakage points, making it easy for cooling liquid to leak or electrical connections to be damp, and in severe cases, causing the thermal management system to fail or even short-circuiting of the battery modules.

[0005] Maintenance of the fan is not convenient: The fan is fixed to the rear panel of the cabinet by two sets of horizontal bolts, and then assembled to the cabinet. The bottom bolts cannot be directly removed due to space limitations, so when the fan needs to be repaired, maintained, or replaced, the heavy rear panel of the cabinet needs to be removed first, which consumes a lot of manpower and resources, and the process is tedious and time-consuming, seriously affecting the maintenance efficiency.

[0006] The control box is not reasonably laid out: Due to space limitations in container and household scenarios, the unit is small in size and the internal components are densely packed, and the control box, as the control center, is fixed inside the cabinet, often with core functional components below. When the lower components need to be repaired, the control box and connected lines need to be completely removed first, and then reassembled and debugged after repair, which not only reduces the repair efficiency, but also easily causes the lines to loosen and the components to wear out due to repeated disassembly and assembly, increasing the risk of secondary failures. SUMMARY

[0007] To solve the above problems, the present application provides a thermal management unit that is convenient to repair, has a reasonable layout, and good ventilation performance.

[0008] To this end, the technical scheme of the present application is: a thermal management unit is installed on the top of a battery energy storage cabinet; a casing is provided, which is divided into a thermal management control area and a fan installation area; a control box is rotatably installed in the thermal management control area, and the control box can be turned by 90 degrees and has two states of horizontal and vertical; A plurality of fans and mounting racks are arranged in the fan installation area, and the fans are fixed on the mounting racks; the mounting racks are fixed in the casing through two groups of bolts with different orientations; An inner recessed interface mounting groove is arranged on the bottom plate of the casing, a plurality of interfaces are arranged in the interface mounting groove, and a sealing gasket is arranged between the interface mounting groove and the top of the battery energy storage cabinet; The front side plate, left side plate and right side plate of the casing are provided with air inlet areas; the rear side plate and top plate of the casing are provided with air outlet areas corresponding to the positions of the fan installation area.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: a fixing seat is fixed on the side wall of the casing, and a long slot hole is arranged on the fixing seat; the control box is rotatably installed on the long slot hole of the fixing seat through a shaft at both ends of one side, and the other side can be placed on the support frame in the middle of the casing.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the support frame is provided with an assembly hole, and the control box is provided with an extended retaining edge on the side bottom facing the support frame, and the retaining edge is provided with a through hole opposite the assembly hole and is fixed by a fastener.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the upper end of the mounting rack is fixed to the rear side plate of the casing through a first group of bolts, and the first group of bolts is perpendicular to the rear side plate of the casing; the lower end of the mounting rack is fixed to the bottom plate of the casing through a second group of bolts, and the second group of bolts is perpendicular to the bottom plate of the casing.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: the mounting rack comprises a first mounting surface, first assembly holes are arranged on both sides above the first mounting surface, and the first group of bolts works in cooperation with the first assembly holes; horizontal second mounting surfaces are extended out from both sides of the bottom of the first mounting surface, second assembly holes are arranged on the second mounting surfaces, and the second group of bolts works in cooperation with the second assembly holes.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: the fan side is also provided with a grounding bolt, which is fixed on the bottom plate of the casing and is perpendicular to the bottom plate.

[0014] On the basis of the above scheme and as a preferred scheme of the above scheme: the casing is installed on the top of the battery energy storage cabinet through a fastener, the top surface of the battery energy storage cabinet is provided with a rectangular opening opposite the interface mounting groove, and the connection is sealed by a sealing gasket.

[0015] As a preferred scheme of the above scheme and on the basis of the above scheme: the battery energy storage cabinet top is provided with a mounting box containing a heat management unit, and a cover plate is arranged above the mounting box; a plurality of ventilation holes are arranged on the front side, rear side, left side, right side of the mounting box and the cover plate, and are opposite to the air inlet area or air outlet area.

[0016] Compared with the prior art, the beneficial effects of the present application are: The control box is arranged in a flip structure, which can be flexibly switched between a horizontal working state and a vertical maintenance state; when maintaining the components below the control box, the control box and the connected wire harness do not need to be disassembled, and only need to be flipped to a vertical state to completely expose the lower area for direct component disassembly, greatly shortening the maintenance time.

[0017] The fixing bolts of the fan mounting frame are divided into two groups, the upper bolts are directly fixed on the rear side plate of the shell, the position of this group of bolts is higher than the fan body, and the operator can directly contact and operate; the lower bolts and the grounding bolt are fixed on the bottom plate of the shell, the head of this group of bolts faces the opening above the shell, and the screwdriver can be vertically inserted into the shell for screwing, so that the fan can be disassembled without disassembling the rear side plate of the shell, greatly simplifying the disassembly operation process.

[0018] An interface mounting groove is arranged on the side of the unit facing the battery energy storage cabinet, all interfaces are arranged in the interface mounting groove, and a sealing pad between the interface mounting groove and the opening of the battery energy storage cabinet forms an integrated sealing structure, so that the sealing of all interfaces is unified, the number of sealing surfaces and potential leakage points is greatly reduced, and the sealing reliability is greatly improved.

[0019] Air inlet areas are arranged on the front, left and right sides of the heat management unit, multi-sided air inlet is realized, air outlet structures are concentrated on the rear side plate and the rear side of the top plate, the air outlet area is increased, the ventilation volume and heat dissipation efficiency are greatly improved, the working temperature of the unit is suitable, and the service life of the unit is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a structural schematic diagram of the present application; Figure 2 The figure is a structural schematic diagram of the interface mounting groove of the present application; Figure 3 The figure is a structural schematic diagram of the internal structure of the present application; Figure 4 The figure is a schematic diagram of the flip state of the control box of the present application; Figure 5 The figure is a structural schematic diagram of the fan and the mounting frame of the present application; Figure 6 The figure is a structural schematic diagram of the battery energy storage cabinet (including the heat management unit) of the present application; Figure 7The structural section view of the battery energy storage cabinet (including the thermal management unit) of the application; Figure 8 The partial enlarged view of Figure 7 ; Figure 9 The exploded view of the battery energy storage cabinet (including the thermal management unit) of the application; Figure 10 The partial exploded view of the battery energy storage cabinet (including the thermal management unit) of the application (another perspective).

[0021] In the figure, the marks are: cabinet 1, front side plate 11, left side plate 12, right side plate 13, rear side plate 14, top plate 15, bottom plate 16, support frame 17, assembly hole 18, mounting part 19, air inlet area 110, air outlet area 111, interface mounting groove 112, control box 2, fixing seat 21, U-shaped hole 22, limiting nut 24, baffle 25, through hole 26, fan 3, mounting frame 31, first mounting surface 32, first group of bolts 33, second mounting surface 34, second group of bolts 35, grounding bolt 36, battery energy storage cabinet 4, mounting box 41, cover plate 42, ventilation hole 43, opening 44, sealing gasket 5. DETAILED DESCRIPTION

[0022] In the description of the application, it should be noted that for the orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The orientation and positional relationship shown in the figure is based on the orientation or positional relationship shown in the figure, and is only for the convenience of describing the application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the application.

[0023] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more features, and in the description of the application, the meaning of "several", "several" is two or more, unless otherwise explicitly specified.

[0024] Referring to the drawings. The thermal management unit described in this embodiment is installed on the top of the battery energy storage cabinet; it includes a cabinet 1, which is a cuboid structure composed of a front side plate 11, a left side plate 12, a right side plate 13, a rear side plate 14, a top plate 15 and a bottom plate 16; the cabinet 1 is divided into a thermal management control area and a fan installation area.

[0025] The heat management control area is installed with a compressor, a condenser, a heat exchanger and corresponding pipelines and sensors (not shown in the figure), at the same time, the heat management control area is also rotatably installed with a control box 2, the control box 2 is installed close to the top plate 15, i.e. at the opening at the upper end of the shell 1, so as to facilitate the overturning of the control box 2.

[0026] The inner wall of the left side plate 12 of the shell 1 is fixed with a fixed seat 21, the fixed seat 21 is provided with a U-shaped hole 22 with an upward opening; at the same time, the shell 1 is also provided with a support frame 17, the side surface of the support frame 17 is provided with an assembly hole 18; the left two ends of the control box 2 are rotatably installed on the U-shaped hole 22 of the fixed seat 21 through a rotating shaft 23; the rotating shaft 23 is provided with an external thread structure, the rotating shaft 23 is arranged in the U-shaped hole 22, and an limiting nut 24 is arranged outside; the limiting nut 24 can also be locked after the control box 2 is overturned by 90 degrees, so as to avoid the rotation of the control box 2.

[0027] The control box 2 can be overturned by 90 degrees, and has horizontal and vertical states; in the initial state, the control box 2 is in the horizontal state, one side of the control box 2 is rotatably connected with the fixed seat 21, the control box 2 is provided with an extended baffle 25 towards the bottom of the side of the support frame 17, the baffle 25 is provided with a through hole 26, and the position of the through hole 26 is opposite to that of the assembly hole 18 on the support frame 17, so that the control box 2 can be fixed through a fastener, so as to fix the position of the control box 2, so that the heat management unit can work normally. When maintenance is needed, the fastener between the control box 2 and the support frame 17 is removed, the limiting nut 24 on the rotating shaft 23 is loosened, then the control box 2 is overturned by 90 degrees upwards, so that the control box 2 is in the vertical state, and then the limiting nut 24 is tightened, so that the control box 2 is only supported by the fixed seat 21, and remains in the vertical state.

[0028] A plurality of fans 3 and mounting frames 31 are arranged in the fan mounting area, the fans 3 are fixed on the mounting frames 31; the mounting frame 31 comprises a first mounting surface 32, first assembly holes are arranged on both sides above the first mounting surface 32, a first set of bolts 33 is arranged in cooperation with the first assembly holes, the first set of bolts 33 is close to the opening at the upper end of the shell 1, is perpendicular to the back plate 14 of the shell 1, and the position of the first set of bolts 33 is not blocked by the top of the fan 3, so that a user can directly use a screwdriver to tighten the first set of bolts 33.

[0029] The bottom of the first mounting surface 32 extends horizontally on both sides to form a second mounting surface 34, and the second mounting surface 34 is provided with a second assembly hole. A second set of bolts 35 cooperates with the second assembly hole, and the second set of bolts 35 is perpendicular to the bottom plate 16 of the cabinet 1. The fan 3 is also provided with a grounding bolt 36 on the side, which is fixed on the bottom plate 16 of the cabinet 1 and is perpendicular to the bottom plate 16. The bolt head of the second set of bolts 35 and the grounding bolt 36 is directed towards the opening above the cabinet 1, that is, the screwdriver can be vertically inserted into the cabinet 1 for screwing, and the disassembly and assembly of the fan 3 can be completed without disassembling the rear panel 14 of the cabinet 1, greatly simplifying the disassembly and assembly operation process.

[0030] The bottom of the cabinet 1 is provided with a mounting portion 19 with an assembly hole, and the mounting portion 19 is fixedly installed on the top of the battery energy storage cabinet 4 through fasteners. The top of the battery energy storage cabinet 4 is provided with a mounting box 41 for accommodating the thermal management unit, and the top of the mounting box is provided with a cover plate 42. A plurality of ventilation holes 43 are arranged on the front side, rear side, left side, right side and cover plate of the mounting box, facilitating air intake and exhaust of the unit.

[0031] The front panel 11, left panel 12 and right panel 13 of the cabinet 1 are provided with an air inlet area 110, and a plurality of air inlet holes are arranged in the air inlet area 110. The rear panel 14 and the top panel 15 of the cabinet are provided with an air outlet area 111 at the rear position, and the air outlet area 111 is provided with a plurality of air outlet holes. The air outlet area 111 of the top panel 15 is located above the fan mounting area. During operation, the fan 3 is started, air enters from the air inlet area 110 of the front panel 11, left panel 12 and right panel 13 of the cabinet, carries away the heat in the unit, and then is discharged from the air outlet area 111 arranged at the rear position of the rear panel 14 and the top panel 15 of the cabinet, thereby reducing the temperature in the unit and prolonging the service life.

[0032] The bottom plate 16 of the cabinet 1 is provided with a recessed interface mounting groove 112, and the bottom of the interface mounting groove 112 is provided with a communication interface, a debugging interface, a power liquid cooling interface and a battery liquid cooling interface. A rectangular opening 44 is formed in the bottom surface of the mounting box 41 on the top of the battery energy storage cabinet 4, and a sealing gasket 5 is arranged between the interface mounting groove 112 and the opening 44 of the battery energy storage cabinet, and the interface mounting groove 112 and the opening 44 of the battery energy storage cabinet are sealed by the sealing gasket 5. All interfaces are arranged in a centralized manner, and the sealing gasket 5 between the interface mounting groove 112 and the opening 44 of the battery energy storage cabinet forms an integrated sealing structure, which greatly improves the sealing reliability.

[0033] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the scope of the present application should be considered as falling within the protection scope of the present application. It should be noted that for ordinary technical personnel in the technical field, some improvements and refinements without departing from the principles of the present application should also be considered as falling within the protection scope of the present application.

Claims

1. A thermal management unit, characterized by: The application discloses a heat management unit for a battery energy storage cabinet. The heat management control area is internally provided with a control box which is rotatably installed and can be turned by 90 degrees to have horizontal and vertical states. The fan installation area is internally provided with a plurality of fans and installation racks, and the fans are fixed on the installation racks. The bottom plate of the casing is internally provided with an inner recessed interface installation groove which is internally provided with a plurality of interfaces and is provided with a sealing gasket between the interface installation groove and the top of the battery energy storage cabinet.

2. A thermal management unit as claimed in claim 1, characterized in that: The front side plate, the left side plate and the right side plate of the casing are provided with air inlet areas, and the rear side plate and the top plate of the casing are provided with air outlet areas corresponding to the positions of the fan installation area.

3. A thermal management pack as claimed in claim 2, wherein: The side wall of the casing is fixed with a fixed seat which is provided with a long slot hole.

4. A thermal management unit as claimed in claim 1, characterized in that: The control box is rotatably installed on the long slot hole of the fixed seat through a rotating shaft at two ends of one side of the control box and can be placed on a support frame in the middle of the casing at the other side.

5. A thermal management pack as claimed in claim 4, wherein: The support frame is provided with an assembly hole, and the control box is provided with an extended retaining edge at the bottom of the side of the support frame.

6. A thermal management unit as claimed in claim 4, characterised in that: The upper end of the installation rack is fixed on the rear side plate of the casing through a first group of bolts which are perpendicular to the rear side plate of the casing.

7. A thermal management unit as claimed in claim 1, characterized in that: The lower end of the installation rack is fixed on the bottom plate of the casing through a second group of bolts which are perpendicular to the bottom plate of the casing.

8. A thermal management unit as claimed in claim 1, characterized in that: The installation rack comprises a first installation surface, and the two sides above the first installation surface are provided with first assembly holes. The side of the fan is also provided with a grounding bolt which is fixed on the bottom plate of the casing and is perpendicular to the bottom plate. The casing is installed on the top of the battery energy storage cabinet through fasteners, and the top surface of the battery energy storage cabinet is provided with a rectangular opening which is opposite to the interface installation groove and is sealed through a sealing gasket. The top of the battery energy storage cabinet is provided with an installation box for accommodating the heat management unit, and the top of the installation box is provided with a cover plate. The front side, the rear side, the left side, the right side of the installation box and the cover plate are all provided with a plurality of ventilation holes which are opposite to the air inlet areas or the air outlet areas.

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