Energy storage heat exchange device and energy storage system

Abstract

The utility model provides an energy storage heat exchange device and a heat storage system, which comprise a fan and a radiator, the fan is installed along the horizontal direction, and the fan is used for blowing air to flow along the vertical direction. The radiator is installed in the vertical direction and surrounds the outer side of the draught fan on the horizontal plane, the angle, facing one side of the radiator, between the two ends of the radiator on the horizontal plane and the center connecting line of the draught fan is defined as a surrounding angle, and the surrounding angle is larger than 90 degrees. The air blowing face of the fan and the radiator are perpendicular to each other but not parallel to each other, so that the radiator can be provided with at least two side faces around the fan, the radiating area is larger, a channel for air circulation is reserved in the middle, air blown out by the fan can take away more heat, a mechanical refrigeration mode is not needed, and more energy consumption is reduced. Compared with an existing technical scheme, air flowing is hindered by at least two faces, the air flowing directionality is higher, air cannot escape all around, the air speed can be lowered, and noise of the draught fan can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of energy storage, and in particular relates to an energy storage heat exchange device and an energy storage system. Background Art

[0002] Existing energy storage heat exchangers feature a rear-inlet, front-outlet design. This conventional rear-inlet, front-outlet design offers advantages such as simplicity, ease of installation, and the ability to be installed at any height within the battery cabinet. However, its disadvantages include a small heat exchange area for a given volume, high air speeds, high noise levels, and poor energy efficiency. This limited heat exchange area necessitates mechanical cooling to cool the energy storage inverter, precluding the more energy-efficient natural cooling method. Utility Model Content

[0003] The technical purpose of the utility model is to provide an energy storage heat exchange device, which aims to increase the heat exchange area, reduce the frequency of mechanical refrigeration, achieve energy conservation and emission reduction, and at the same time reduce noise.

[0004] To solve the above technical problems, the present invention is implemented as follows: the present application provides an energy storage and heat exchange device, comprising:

[0005] The fan is installed in the horizontal direction and is used to blow air in the vertical direction;

[0006] The radiator is installed in the vertical direction and surrounds the outside of the fan on the horizontal plane. The angle between the two ends of the radiator and the center line of the fan on the horizontal plane toward the radiator is defined as the surround angle, which is greater than 90 degrees.

[0007] In one embodiment, the heat sink surrounds three sides of the fan projected in the vertical direction, and the projection angle is not less than 240 degrees.

[0008] In one embodiment, there are two types of radiators, including an evaporative radiator and a liquid-cooled radiator;

[0009] Both the evaporative radiator and the liquid cooling radiator have a first heat dissipation surface and a second heat dissipation surface surrounding two side surfaces. The two first heat dissipation surfaces are arranged opposite to each other, and one end of the two second heat dissipation surfaces is close to each other, and the other end is connected to the two first heat dissipation surfaces accordingly.

[0010] In one embodiment, the evaporative radiator is a Freon radiator.

[0011] In one embodiment, the ends of the evaporative radiator and the liquid-cooled radiator facing away from each other are both working medium inlets and outlets, and the working medium inlets and outlets are used for circulating the working medium.

[0012] In one embodiment, it further includes a Freon system and a liquid cooling system, the working fluid inlet and outlet of the Freon radiator are connected to the Freon system, and the working fluid inlet and outlet of the liquid cooling radiator are connected to the liquid cooling system.

[0013] In one embodiment, the radiator includes a plurality of aluminum fins. From a vertical perspective, the plurality of aluminum fins have through holes that connect the blower side and the outside air.

[0014] In one embodiment, the blower is located at the lower end of the plurality of heat dissipation surfaces.

[0015] In one embodiment, the projections of the plurality of radiators are vertically distributed in sequence in the second direction.

[0016] This application also provides an energy storage system, which includes any one of the energy storage heat exchange devices in the above embodiments, and also includes a battery and an energy storage converter. The energy storage heat exchange device is used to dissipate the heat of the battery and the energy storage converter.

[0017] Compared with the prior art, the beneficial effect of the energy storage heat exchange device in the present utility model is that: through such a design, a larger heat exchange area of the heat exchanger can be achieved under the same volume. Therefore, the natural cooling method (only two electrical components, namely the water pump and the blower, are required to meet the heat exchange requirements) can be adopted, while reducing the use frequency of mechanical refrigeration (using electrical components such as water pumps, compressors, and blowers), so as to achieve the purpose of energy conservation and emission reduction. And due to the larger heat exchange area designed in this application, under the same air volume, the wind speed is lower and the wind resistance is smaller, so the overall noise of the energy storage system is smaller. Description of the Drawings

[0018] Figure 1 It is a simplified top view of the positional relationship between the blower and the radiator in the existing heat exchange system;

[0019] Figure 2 It is a schematic top view of the positional relationship between the blower and the radiator in the energy storage heat exchange device in the embodiment of the present utility model;

[0020] Figure 3 It is a diagram of the relationship between the surrounding surface of the heat exchanger and the surrounding angle;

[0021] Figure 4a It is a diagram of the positional relationship between the heat exchangers when the distribution angle between them is acute and the blower;

[0022] Figure 4b It is a diagram of the positional relationship between the heat exchangers when the distribution angle between them is obtuse and the blower.

[0023] In the drawings, each reference numeral represents: blower 100; radiator 200; Freon radiator 210; liquid-cooled radiator 220; working medium inlet and outlet 230; Freon system 300; liquid-cooled system 400. Detailed Embodiments

[0024] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0027] Refer to Figure 1 , Figure 1 which shows the heat dissipation device of the blower 100 commonly used at present. Figure 1 As a top view, it can be seen that the blowing surface of the blower 100 faces the heat dissipation surface of the radiator 200, resulting in a smaller heat dissipation area. And to ensure the heat dissipation quality, a faster wind speed is required to prevent air from escaping to other places, so the noise of the blower 100 is high and the energy consumption is poor. Most importantly, due to the smaller heat dissipation area, mechanical refrigeration is needed to assist in heat dissipation and cooling, and mechanical refrigeration usually uses a compressor, resulting in a relatively high energy consumption.

[0028] The present application provides an energy storage heat exchange device. Refer to Figure 2 , Figure 2 which shows the heat dissipation principle diagram of the energy storage heat exchange device of the present application. Figure 2The figure in the figure also shows a top view, including a horizontally mounted fan 100 and a vertically mounted radiator 200. The fan 100 is used to blow air vertically. The radiator 200 surrounds the fan on a horizontal plane. The wrap angle is defined as the angle between the ends of the radiator and the center of the fan on a horizontal plane toward the radiator. The wrap angle is greater than 90 degrees.

[0029] In the above embodiment, the blowing surface of the fan 100 and the heat sink 200 are perpendicular rather than parallel. Therefore, the heat sink 200 can be arranged around the fan 100 on at least two sides, leaving a channel for air circulation in the middle. This way, the heat dissipation surface has at least two sides, which increases the heat dissipation area. The air blown by the fan 100 can remove more heat, and mechanical cooling is not required, thereby reducing energy consumption. Because the air flow is not obstructed by at least two sides compared to existing technical solutions, the air flow is more directional and does not escape everywhere, so the wind speed can be slowed down and the noise of the fan 100 is reduced.

[0030] See also Figure 3 , Figure 3 The relationship between the surrounding angle and the size of the surrounding surface is revealed. Assuming that the fan 100 is a circle or a square, the two ends of the radiator 200 are connected to the center of the fan 100 to form an angle. From a top-down perspective, the size of the angle determines how much of the surface of the radiator 200 surrounds the fan 100 and the proportion of the surface occupied. Assuming that the fan 100 is a square from a top view, when the two ends of the radiator on a certain surface are located on the straight line where the diagonal of the square is located, the angle is 90 degrees, and the two surfaces are 180 degrees. When the proportion on the second surface is 50%, the angle is 135 degrees.

[0031] In the above embodiment, the heat dissipation surface of the heat sink 200 is a plane. In other embodiments, the heat dissipation surface may be a curved surface or a combination of straight surfaces, such as two vertical heat dissipation surfaces connected by a rounded corner.

[0032] See also Figure 2 In one embodiment, the heat sink 200 surrounds three vertically projected sides of the fan 100, with a projection angle of no less than 240 degrees. That is, the heat sink 200 surrounds three sides of the fan 100, and the fourth side cannot be mounted with the heat sink 200 because it needs to be connected to other external devices. In the embodiments provided herein, the surface area ratio is 100%, so the projection angle is 270 degrees.

[0033] Of course, when the fan 100 is rectangular, the projection angle may be greater than 270 degrees or less than 270 degrees. As long as the area occupation ratio is equal to 100%, the heat dissipation effect will reach the best. If it exceeds 100%, the excess part will be farther away from the radiator, and the achieved heat dissipation effect will be limited. According to the test, when it is less than 240 degrees, the heat dissipation effect will be significantly reduced.

[0034] This embodiment provides a heat exchange area that is three times larger than the existing one, and the air flow direction is more consistent. Therefore, the improvement effect exceeds three times that of a single heat exchange area. At the same time, natural wind heat dissipation can be achieved. Under the same air volume, the wind speed is lower and the wind resistance is smaller. Therefore, the noise of the entire energy storage system heat dissipation device is also smaller, and noise is an important indicator of the energy storage system.

[0035] Refer to Figure 2 , in one of the embodiments, there are two types of radiators 200, including an evaporation radiator and a liquid-cooled radiator 220; both the evaporation radiator and the liquid-cooled radiator 220 have a first heat dissipation surface and a second heat dissipation surface that surround two sides. The two first heat dissipation surfaces are arranged opposite to each other, and one end of the two second heat dissipation surfaces is close to each other, and the other end is respectively connected to the two first heat dissipation surfaces.

[0036] The evaporation radiator and the liquid-cooled radiator 220 are two current mainstream radiators. In this embodiment, the fan 100 can dissipate heat from both of these radiators simultaneously, making the energy storage heat exchange device more versatile. As can be seen from Figure 2 , the evaporation radiator and the liquid-cooled radiator 220 each occupy one and a half sides, that is, a complete side plus half of the middle side. The evaporation radiator and the liquid-cooled radiator 220 are in an "L" shape. The long side is the first heat dissipation surface and is arranged opposite to each other, and the short side is the second heat dissipation surface and is close to each other. Of course, the two do not need to be attached or connected, as long as the distance is as small as possible.

[0037] In one of the embodiments, the evaporation radiator is a Freon radiator 210, and the Freon radiator 210 is a current mainstream radiator for battery heat dissipation.

[0038] Refer to Figure 2 , in one of the embodiments, the ends of the Freon radiator 210 and the liquid-cooled radiator 220 that face away from each other are both working fluid inlets and outlets 230, and the working fluid inlets and outlets 230 are used for the circulation of the working fluid.

[0039] In one of the embodiments, the working fluid inlet and outlet 230 of the Freon radiator 210 is connected to the Freon system 300, and the working fluid inlet and outlet 230 of the liquid-cooled radiator 220 is connected to the liquid-cooled system 400.

[0040] Specifically, this is also the reason why the radiator is not provided on the fourth side. The working fluid inlet and outlet 230 needs to circulate the working fluid and be externally connected to other systems. When the energy storage system starts to operate, the two components of the battery and the energy storage current limiter in the system generate heat during operation and need to be cooled. At this time, the freon system 300 responsible for battery cooling inputs the high-temperature gaseous freon into the interior of the freon radiator 210 through the freon working fluid inlet and outlet 230. Driven by the fan 100, the cooling air enters from the outside of the freon radiator 210 and blows through the fan 100 across the heat dissipation surface. Under the combined action of the cooling air and the freon radiator 210, the high-temperature gaseous freon is reduced to medium-temperature liquid freon and returns to the freon system 300 through the freon working fluid inlet and outlet 230.

[0041] Similarly, the liquid cooling system 400 responsible for cooling the energy storage current limiter inputs the high-temperature ethylene glycol solution into the liquid cooling radiator 220 through the liquid cooling working fluid inlet and outlet 230. Driven by the fan 100, the cooling air enters from the outside of the liquid cooling radiator 220 and blows through the fan 100 across the heat dissipation surface of the liquid cooling radiator 220. Under the combined action of the cooling air and the liquid cooling radiator 220, the high-temperature ethylene glycol solution is reduced to low-temperature ethylene glycol solution and returns to the liquid cooling system 400 through the liquid cooling working fluid inlet and outlet 230.

[0042] In one embodiment, the radiator includes a plurality of aluminum fins. From a vertical perspective, the plurality of aluminum fins have through holes connecting the side of the fan 100 and the outside air. Therefore, under the blowing of the fan 100, the internal flow velocity is faster than the outside, which is equivalent to the air passage being in a negative pressure compared to the outside. The outside air will continuously flow into the air passage through the through holes of the aluminum fins and the flow velocity is increased by the fan 100, thereby taking away the heat on the radiator.

[0043] In one embodiment, the fan 100 is located at the lower end of the radiator. The air flow direction is from bottom to top, and the hot air will more easily rise and flow away from the top.

[0044] In one embodiment, the projections of the plurality of radiators are vertically distributed in sequence in the vertical direction.

[0045] Specifically, one radiator can be placed on each of the three sides. The three are vertically distributed and the fan 100 is placed in the middle, which can minimize the sum of the distances between the three and the fan 100 and achieve better heat dissipation effect.

[0046] Refer to Figure 4a and Figure 4b , Figure 4a and Figure 4bTwo cases of acute angle distribution and obtuse angle distribution are respectively shown. In other embodiments, the radiators located on the two side surfaces can also be in an obtuse angle distribution or an acute angle distribution. The obtuse angle distribution will make the two ends far from the middle side surface farther away from the fan 100, but the advantage is that it can increase the length of the fourth side surface and can be used to place more devices. The obtuse angle distribution will make the two ends of the middle side surface farther away from the fan 100, while the two ends of the surface far from the middle are closer to the fan 100. However, it will reduce the length of the fourth side surface, and it is inconvenient to place devices.

[0047] The present application also provides an energy storage system, which includes any one of the energy storage heat exchange devices in the above embodiments, and also includes a battery and an energy storage converter. The energy storage heat exchange device is used to dissipate the heat of the battery and the energy storage converter. The battery and the energy storage converter are the two major heat-generating components of the energy storage system. In order to improve the overall energy density, it is necessary to reduce the volume of the energy storage system. By using the energy storage heat exchange device provided in the present application, a smaller volume can be used to exchange for a larger heat exchange area and heat exchange amount, making the heat exchange effect better.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A thermal energy storage and heat exchange device, characterized in that, Comprising: A blower (100), installed horizontally, the blower (100) being used to blow air to flow in the vertical direction; And, A radiator (200), installed vertically and surrounding the outside of the blower (100) on a horizontal plane. Define the angle on the side of the radiator (200) between the connecting lines of the two ends of the radiator (200) and the center of the blower (100) on the horizontal plane as the surrounding angle, and the surrounding angle is greater than 90 degrees.

2. The energy storage heat exchange device according to claim 1, wherein, The radiator (200) surrounds three sides of the projection of the blower (100) in the vertical direction, and the projection angle is not less than 270 degrees.

3. The energy storage heat exchange device according to claim 2, wherein There are two types of the radiator (200), including an evaporation radiator and a liquid-cooled radiator (220); Both the evaporation radiator and the liquid-cooled radiator (220) have a first heat dissipation surface and a second heat dissipation surface surrounding two sides. The two first heat dissipation surfaces are arranged oppositely, one end of the two second heat dissipation surfaces is close to each other, and the other end of each is correspondingly connected to the two first heat dissipation surfaces.

4. The energy storage heat exchange device according to claim 3, wherein, The evaporation radiator is a Freon radiator (210).

5. The energy storage heat exchange device according to claim 4, wherein One end of the Freon radiator (210) and the liquid-cooled radiator (220) facing away from the other is a working medium inlet and outlet (230), and the working medium inlet and outlet (230) is used for the circulation of the working medium.

6. The energy storage heat exchange device according to claim 5, characterized in that, The working medium inlet and outlet (230) of the Freon radiator (210) is connected to a Freon system (300), and the working medium inlet and outlet (230) of the liquid-cooled radiator (220) is connected to a liquid-cooled system (400).

7. The energy storage heat exchange device according to claim 1, wherein The radiator (200) includes a plurality of aluminum fins. From a vertical perspective, the plurality of aluminum fins have through holes connecting the side of the blower (100) and the outside air.

8. The energy storage heat exchange device according to claim 1, characterized in that The blower (100) is located at the lower end of the radiator (200).

9. The energy storage heat exchange device according to claim 1, characterized in that A plurality of the radiators (200) are vertically distributed in sequence in the projection in the vertical direction.

10. A energy storage system, characterized in that, Comprising the energy storage heat exchange device according to any one of claims 1-9, further comprising a battery and an energy storage converter, and the energy storage heat exchange device is used to dissipate the heat of the battery and the energy storage converter.

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