Heat dissipation device of energy storage unit

Abstract

The embodiment of the utility model discloses a heat dissipation device of an energy storage unit. The heat dissipation device of the energy storage unit comprises a frame, a heat dissipation assembly and an electric control assembly, two air inlets arranged at intervals in the second direction are formed in the side, in the first direction, of the frame, and the first direction is perpendicular to the second direction. The heat dissipation assembly is located in the frame and comprises a condenser and at least one heat dissipation fan. The condenser is arranged on the air outlet side of the cooling fan, and the electric control assembly is arranged on the air inlet side of the cooling fan. The electric control assembly is located in the frame and close to the second air inlet along the bottom of the frame. By means of the structural layout, on the basis that heat dissipation of the electric control assembly is not affected, disturbance caused by air resistance is reduced, and then unit noise is reduced. And the electric control assembly is placed on one side of the air inlet, so that the heat dissipation device of the energy storage unit can be regularly maintained conveniently.

Description

TECHNICAL FIELD

[0001] The utility model embodiment relates to energy storage unit heat dissipation technical field, especially to a kind of energy storage unit heat dissipation device. BACKGROUND

[0002] Energy storage unit heat dissipation device as the important equipment of guaranteeing energy storage system stable operation, it is usually constituted by air cooling system and water cooling system.

[0003] When heat dissipation device operates, external air enters from the air inlet on the frame, flows through the condenser in the frame, and then is discharged from the air outlet, so as to realize heat dissipation.

[0004] The energy storage unit heat dissipation device in prior art, its electric control component is placed on the top of energy storage thermal management unit, first, the electric control component is directly opposite to the air inlet, blocks the flow of air, and then disturbs the air, increases the noise caused by air flow;Second, it is difficult to maintain, the electric control component cannot be repaired without disassembling the energy storage unit heat dissipation device cabinet. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of energy storage unit heat dissipation device, reduce operating noise by specific structure layout, and it is convenient to repair.

[0006] The utility model embodiment provides a kind of energy storage unit heat dissipation device, including frame, heat dissipation component and electric control component;Frame is opened two air inlets along second direction interval arrangement on the side along first direction;First direction is perpendicular to second direction;Heat dissipation component is located in frame, and heat dissipation component includes condenser and at least one heat dissipation fan;Condenser is set on the air outlet side of heat dissipation fan;Electric control component is set on the air inlet side of heat dissipation fan;Wherein, the air inlet close to heat dissipation fan is first air inlet, and the air inlet close to electric control component is second air inlet;Electric control component is located in frame, and is set along the bottom of frame close to second air inlet.

[0007] Optionally, the condenser is located at the top of the frame and is inclined.

[0008] Optionally, the heat dissipation fan is arranged towards a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0009] Optionally, when there are a plurality of heat dissipation fans, a flow guide partition plate perpendicular to the arrangement direction of the heat dissipation fans is arranged between the heat dissipation fans.

[0010] Optionally, the energy storage unit heat dissipation device further comprises an air grille, and the air grille is arranged at the air inlet and / or air outlet of the heat dissipation fan.

[0011] Optionally, the air grille comprises: an air inlet grille and / or an air outlet grille; the air inlet grille is arranged at the air inlet of the heat dissipation fan; and the air outlet grille is arranged at the air outlet of the heat dissipation fan.

[0012] Optionally, the energy storage unit heat dissipation device further comprises a static pressure chamber, the static pressure chamber is arranged between the condenser and the heat dissipation fan, and a sound absorbing device is arranged in the static pressure chamber.

[0013] Optionally, the sound absorbing device comprises sound absorbing cotton and / or a resistive sound insulation layer.

[0014] Optionally, sound absorbing cotton is arranged on the inner side of the metal plate of the air inlet side of the heat dissipation fan.

[0015] Optionally, an air outlet is arranged on the top of the frame, and the energy storage unit heat dissipation device further comprises a flow equalizing cover, and the flow equalizing cover is arranged at the air outlet.

[0016] The energy storage unit heat dissipation device provided in the embodiment of the utility model, by in the frame along one side of first direction open two along second direction interval arrangement's air inlet, wherein, close to the air inlet of heat dissipation assembly is first air inlet, close to the air inlet of electric control assembly is second air inlet, first direction and second direction vertical. The air inlet is divided into the first air inlet for the heat dissipation assembly and the second air inlet for the electric control assembly. In the working process of the energy storage unit heat dissipation device, most of the cold air flows into the first air inlet. Since the electric control assembly is not arranged near the air inlet, the disturbance caused by the air flow resistance of the electric control assembly is reduced, and the noise is further reduced. The heat dissipation assembly is located in the frame, and the heat dissipation assembly comprises a condenser and at least one heat dissipation fan. The condenser is arranged on the air outlet side of the heat dissipation fan, and the internal pressure of the air outlet side is higher than the external pressure. The condenser is not easy to accumulate dust, which is conducive to the efficient operation of the heat dissipation device. The electric control assembly is arranged on the air inlet side of the heat dissipation fan, and the electric control assembly is located in the frame and arranged along the bottom of the frame close to the second air inlet. A small amount of cold air flows into the second air inlet, and the electric control assembly is arranged at the air inlet. The wind power is small. Such structural layout reduces the disturbance caused by air resistance without affecting the heat dissipation of the electric control assembly itself, thereby reducing the noise of the unit. And the electric control assembly is placed on one side of the air inlet, which is convenient for regular maintenance of the energy storage unit heat dissipation device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The perspective structure schematic diagram of the energy storage unit heat dissipation device provided in the embodiment of the utility model;

[0018] Figure 2 The external structure schematic diagram of the energy storage unit heat dissipation device provided in the embodiment of the utility model;

[0019] Figure 3 The structure schematic diagram of the heat dissipation assembly provided in the embodiment of the utility model;

[0020] Figure 4 The perspective structure schematic diagram of the heat dissipation assembly provided in the embodiment of the utility model.

[0021] In the figure: 100, frame; 110, air inlet; 200, heat dissipation assembly; 210, condenser; 220, heat dissipation fan; 221, guide baffle; 230, air grille; 231, air inlet grille; 232, air outlet grille; 300, electric control assembly; 240, air bellow; 250, static pressure cavity. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, not to limit the utility model. In addition, it should be noted that only the part related to the utility model is shown in the drawings for the convenience of description, not all the structures.

[0023] Figure 1 A perspective structural schematic view of the energy storage unit heat dissipation device provided by the embodiment of the utility model, Figure 2 An external structural schematic view of the energy storage unit heat dissipation device provided by the embodiment of the utility model, Figure 3 A structural schematic view of the heat dissipation assembly provided by the embodiment of the utility model, Figure 4 A perspective structural schematic view of the heat dissipation assembly provided by the embodiment of the utility model.

[0024] Specifically Figure 1 As shown in the figure, the energy storage unit heat dissipation device comprises a frame 100, a heat dissipation assembly 200 and an electric control assembly 300. The frame 100 is mainly of metal structure, which is mainly used to provide stable support and protection for the whole heat dissipation device. At the same time, the frame of metal material has good thermal conductivity, which can assist heat dissipation, conduct part of the heat away and improve the overall heat dissipation efficiency. The heat dissipation assembly 200 can be understood as the structure used for heat dissipation in the energy storage unit heat dissipation device, and the core components thereof are a condenser 210 and a heat dissipation fan 220. The heat dissipation fan 220 can adopt a centrifugal fan or an axial flow fan. In this embodiment, the compressor adopts a vertical compressor. The electric control assembly 300 can be understood as the controller of the energy storage unit heat dissipation device, which is used to receive signals from various monitoring devices such as temperature sensors inside the energy storage unit, control the operating state of the heat dissipation assembly 200 according to the preset temperature threshold. The electric control assembly 300 itself will generate a small amount of heat during operation, but in this high-heat environment of the energy storage unit, it cannot be passively cooled, so it needs to be actively cooled to reduce the temperature of the electrical components in the electric control assembly 200, increase the service life of the electric control assembly 200, and thus increase the service life of the low-noise energy storage heat management unit.

[0025] The first direction X is perpendicular to the second direction Z, and the third direction Y is perpendicular to the first direction X and the second direction Z. In the normal working state, the energy storage unit heat dissipation device can be regarded as being installed on a horizontal plane formed by the X axis and the Y axis.

[0026] On one side of the frame 100 along the first direction X, two air inlets 110 are arranged along the second direction Z. The first air inlet 111 near the heat dissipation fan 220 is the main air inlet through which most of the external air enters the frame. Since the electric control assembly 300 is not arranged near the air inlet, the disturbance of the air flow resistance of the main air inlet caused by the electric control assembly 300 is reduced, and the noise caused by the air flow disturbance is also reduced. For example, as shown in the figure, the first air inlet 111 can be arranged on the side of the frame parallel to the heat dissipation fan 220 along the second direction Z. On this basis, the heat exchange pipe connected to the condenser 210 can be arranged along the flow direction of the cold air entering the frame 100 from the first air inlet 111, further enhancing the heat dissipation effect. Figure 1

[0027] The heat dissipation assembly 200 is located in the frame 100, and the heat dissipation assembly 200 includes a condenser 210 and at least one heat dissipation fan 220. The condenser 210 is arranged on the air outlet side of the heat dissipation fan 220. Since the internal pressure on the air outlet side is higher than the external pressure, the condenser 210 is not easy to accumulate dust, which is conducive to the efficient and clean operation of the heat dissipation device. The electric control assembly 300 is arranged on the air inlet side of the heat dissipation fan 220, away from the first air inlet 111 of the heat dissipation fan 220, and the wind power is small, which will not produce large noise. At the same time, the electric control assembly 300 is arranged along the bottom of the frame 100 close to the second air inlet 112 in the frame 100. The air entering from the second air inlet 112 can directly flow through the electric control assembly 300, which meets the heat dissipation requirements and disassembly and maintenance requirements of the electric control assembly 300.

[0028] For example, during the maintenance of the energy storage unit heat dissipation device, the air inlet dust screen can be removed from the second air inlet 112 to maintain the electric control assembly 300, without the need to disassemble the entire energy storage unit heat dissipation device.

[0029] For example, as shown in the figure, the first air inlet 111 can be arranged on the side of the frame parallel to the heat dissipation fan 220 along the second direction Z. On this basis, the heat exchange pipe connected to the condenser 210 can be arranged along the flow direction of the cold air entering the frame 100 from the first air inlet 111, further enhancing the heat dissipation effect. Figure 1 3 ​​As shown in FIGS. 4, in an optional embodiment, the condenser 210 is located at the top of the frame 100 and is arranged obliquely. The condenser 210 arranged in an oblique mounting structure can provide a larger heat dissipation area in a smaller frame, thereby providing better heat dissipation effect, effectively ensuring that the energy storage unit operates in a stable temperature range, avoiding problems such as performance degradation and shortened service life caused by excessively high temperature. In addition, by obliquely installing the condenser 210 at the top of the frame 100 and arranging the heat dissipation fan 220 below the condenser 210, a vertical upward air-cooled heat dissipation system is formed. This structural layout, on the one hand, follows the natural law of thermodynamics that hot air rises. When the energy storage unit operates to generate heat, the hot air will naturally rise, the heat dissipation fan 220 blows upward, and the heat is guided out by the force, saving additional energy consumption. On the other hand, the internal pressure at the air outlet is higher than the external pressure, forming a positive pressure difference environment, and air will spontaneously flow from the inside to the outside. In this way, even if there are some tiny gaps in the frame, external dust is difficult to enter. Under the action of the pressure difference, the external air does not have enough power to overcome the internal air flow and enter the frame. This reduces the noise problem caused by dust accumulation, reduces the risk of failure caused by dust accumulation, improves the stability and reliability of the operation of the energy storage unit, and prolongs the service life thereof.

[0030] For example, the condenser 210 arranged by a porous medium and a uniform metal flow channel, such as a copper tube aluminum fin or a microchannel, can play a role in uniform air flow, thereby attenuating part of the flow noise of the air.

[0031] Continuing to refer to Figure 3 and Figure 4 In an optional embodiment, the heat dissipation fan 220 is arranged towards the third direction Y.

[0032] In order to better cooperate with the work of the heat dissipation fan 220, the frame 100 is provided with a composite sheet metal structure air box 240 around the heat dissipation fan 220, which includes a peripherally closed sheet metal shell and a sheet metal partition plate extending along the plane where the first and second directions Z are located. The heat dissipation fan 220 is fixed to the sheet metal partition plate by bolts and is arranged towards the third direction Y, which divides the air box 240 into two independent cavities, an air inlet negative pressure cavity and an air outlet pressure increasing cavity. The bottom opening of the air inlet negative pressure cavity serves as a cold air inlet, and the top opening of the air outlet pressure increasing cavity forms a directional air outlet channel. The independent arrangement of the air inlet cavity and the air outlet cavity avoids the direct collision of the air flows, reduces the flow return or vortex phenomenon, and reduces the flow pressure drop loss, thereby significantly improving the heat dissipation efficiency.

[0033] By directing the heat dissipation fan 220 towards the third direction Y and cooperating with the air inlet negative pressure chamber and the air outlet supercharging chamber of the air bellow 240, a directional airflow channel is formed, reducing the whistling sound and turbulent noise caused by airflow turbulence, and ensuring uniform airflow coverage of the condenser surface.

[0034] For example, the heat dissipation fan 220 can be a centrifugal fan. The design of the air inlet negative pressure chamber in combination with the characteristics of the centrifugal fan can further reduce the airflow pulsation noise at the fan inlet, and the static pressure stabilization effect of the air outlet supercharging chamber can suppress the propagation of high-frequency noise. In addition, the air bellow metal shell itself has certain sound insulation performance. The separation structure of the air bellow 240 avoids the direct collision of the air inlet and outlet airflow, reduces the whistling sound and turbulent noise caused by airflow turbulence, and further blocks the transmission of mechanical vibration noise to the outside.

[0035] Further, when there are multiple heat dissipation fans 220, a flow guide partition plate 221 perpendicular to the arrangement direction of the heat dissipation fans 220 is arranged between the heat dissipation fans 220. As shown in Figure 4 the flow guide partition plate 221 extends to the top and / or bottom enclosure structure of the air bellow 240 in the second direction Z in the air outlet supercharging chamber, thereby constructing independent air ducts isolated from each other. By constructing independent air ducts isolated from each other, the airflow generated by adjacent heat dissipation fans 220 can be effectively prevented from interfering with each other, eliminating turbulence, and further ensuring that the airflow forms a laminar flow state along the preset flow direction. Secondly, the flow guide partition plate 221 as a reinforcing rib structure can significantly improve the overall structural strength of the air bellow 240, effectively suppressing the mechanical vibration generated during system operation and the noise caused thereby.

[0036] Continuing to refer to Figure 3 In an optional embodiment, the energy storage unit heat dissipation device further includes an air grille 230 arranged at the air inlet and / or air outlet of the heat dissipation fan 220. The air grille 230 is composed of a group of parallel or intersecting blades, grille bars. By arranging the air grille 230 at the air inlet and air outlet, the effect of uniform air flow can be achieved, making the air flow into and out of the unit more uniform. By reducing the airflow impact, return, vortex, rotation, etc. between parts, the loss of flow pressure drop is reduced, and a part of the air flow noise is attenuated.

[0037] Further, the air grille 230 includes: an air inlet grille 231 and / or an air outlet grille 232; the air inlet grille 231 is arranged at the air inlet of the heat dissipation fan 220; the air outlet grille 232 is arranged at the air outlet of the heat dissipation fan 220. As shown in Figure 1 the air inlet grille 231 adopts an integrated mounting structure and is directly assembled to the air inlet surface of the heat dissipation fan 220, which not only ensures the sealing of the air inlet channel, but also facilitates the maintenance of the overall module. As shown in Figure 3As shown, the air outlet grille 232 is detachably arranged at the air outlet end of the air box 240 to which the heat dissipation fan 220 belongs. The air outlet grille 232 attenuates a part of the flow noise of the air by guiding the air flow before the air flow enters the static pressure chamber 250.

[0038] With reference back to Figure 4 In an optional embodiment, the energy storage unit heat dissipation device further comprises a static pressure chamber 250 arranged between the condenser 210 and the heat dissipation fan 220, and the static pressure chamber 250 is provided with a sound attenuation device. The static pressure chamber 250 is a suddenly enlarged space compared with the air outlet plenum of the air box 240, and the air flow speed is reduced here, and thus the noise is also reduced. In addition, the sound attenuation device provided in the static pressure chamber 250 can eliminate most of the noise and avoid the propagation of the noise outside the static pressure chamber 250.

[0039] Further, the sound attenuation device comprises sound-absorbing cotton and / or resistive sound insulation layer. The sound-absorbing cotton and the resistive sound insulation layer are simple to manufacture and low in cost. The sound-absorbing cotton converts sound energy into heat energy through a porous structure (such as glass wool, rock wool, polyester fiber) to absorb medium and high frequency sound waves; and the resistive sound insulation layer blocks the sound wave propagation path through high-density materials (such as soundproof felt, lead plate, rubber) to suppress low-frequency noise.

[0040] For example, different densities of sound-absorbing cotton can be selected according to the noise frequency width generated by the heat dissipation device in actual work to absorb medium and high frequency noise. And a multi-layer composite resistive sound insulation layer is arranged to cope with low-frequency noise of different frequency widths to form an impedance composite sound attenuation system.

[0041] In an optional embodiment, sound-absorbing cotton is arranged on the inner side of the metal sheet on the air inlet side of the heat dissipation fan 220 to mainly eliminate the sound cavity resonance generated by the heat dissipation fan 220 on the air inlet side and reduce the noise from the source.

[0042] With reference back to Figure 2 In an optional embodiment, the frame 100 is provided with an air outlet at the top of the device, and the energy storage unit heat dissipation device further comprises a flow equalization cover (not shown in the figure) located at the air outlet. The flow equalization cover is used to equalize the air flow at the air outlet to further reduce the noise of the energy storage unit heat dissipation device.

[0043] When the system is running, the external cold air enters the frame 100 and flows in the frame 100 as follows: first, the external cold air enters the frame 100 from the two air inlets 110, most of the cold air flows in from the first air inlet, a small amount of cold air flows in from the second air inlet, and a small amount of cold air is combined with most of the cold air flowing in from the other air inlet after passing through the electric control assembly 300. Then, under the negative pressure action of the cooling fan 220, the cold air enters the air inlet cavity through the bottom opening of the air bellow 240, and then is captured by the high-speed rotating cooling fan 220 in the third direction Y and is transported to the air outlet cavity, and the pressurized airflow is directed to be injected along the top opening of the air bellow 240, realizing the pressure difference isolation of the air inlet and air outlet areas. Then, the high-speed airflow enters the static pressure cavity 250, and the sound-absorbing cotton and the resistive sound insulation layer arranged inside the static pressure cavity 250 can eliminate most of the noise. The high-speed airflow passing through the static pressure cavity 250 passes through the condenser 300 in the second direction Z and exchanges heat with the condenser 300. Finally, above the condenser, the hot air after heat exchange is discharged from the air outlet under the guidance of the flow equalization cover 400. Through the above structural layout, most of the noise of the cooling fan 220 exhaust can be isolated and eliminated in the static pressure cavity 250, and the noise carried by the airflow after the condenser heat exchanger is greatly reduced.

[0044] In the embodiment, the energy storage unit heat dissipation device further includes a compressor, a water pump and other conventional structures, and the outer side of the compressor and other conventional structures can be treated with sound-absorbing cotton on the basis of the above embodiment to reduce noise at the sound source, which will not be described here.

[0045] It should be noted that the above are only preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments, mutual combinations and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. An energy storage unit cooling device, comprising: The energy storage unit heat dissipation device comprises a frame (100), a heat dissipation assembly (200) and an electric control assembly (300). The frame (100) is provided with two air inlets (110) along a second direction on one side along a first direction; the first direction is perpendicular to the second direction. The heat dissipation assembly (200) is located in the frame (100), and the heat dissipation assembly (200) comprises a condenser (210) and at least one heat dissipation fan (220). The condenser (210) is arranged on the air outlet side of the heat dissipation fan (220). The electric control assembly (300) is arranged on the air inlet side of the heat dissipation fan (220). The air inlet (110) close to the heat dissipation fan (220) is a first air inlet (111), and the air inlet (110) close to the electric control assembly (300) is a second air inlet (112); the electric control assembly (300) is located in the frame (100) and arranged along the bottom of the frame (100) close to the second air inlet (112).

2. The energy storage unit cooling device of claim 1, wherein, The condenser (210) is located on the top of the frame (100) and is arranged obliquely.

3. The energy storage unit cooling device of claim 1, wherein, The heat dissipation fan (220) is arranged towards a third direction, which is perpendicular to the first direction and the second direction.

4. The energy storage unit cooling device of claim 1, wherein, When there are a plurality of heat dissipation fans (220), a flow guide partition plate (221) perpendicular to the arrangement direction of the heat dissipation fan (220) is arranged between the heat dissipation fans (220).

5. The energy storage unit cooling device of claim 1, wherein, The energy storage unit heat dissipation device further comprises an air grille (230), which is arranged on the air inlet and / or air outlet of the heat dissipation fan (220).

6. The energy storage unit cooling device of claim 5, wherein, The air grille (230) comprises an air inlet grille (231) and / or an air outlet grille (232); the air inlet grille (231) is arranged on the air inlet of the heat dissipation fan (220); and the air outlet grille (232) is arranged on the air outlet of the heat dissipation fan (220).

7. The energy storage unit cooling device of claim 1, wherein, The energy storage unit heat dissipation device further comprises a static pressure chamber (250), which is arranged between the condenser (210) and the heat dissipation fan (220), and the static pressure chamber (250) is provided with a sound absorbing device.

8. The energy storage unit cooling device of claim 7, wherein, The sound absorbing device comprises sound absorbing cotton and / or a resistive sound insulation layer.

9. The energy storage unit cooling device of claim 3, wherein, The sound absorbing cotton is arranged on the inner side of the metal plate of the air inlet side of the heat dissipation fan (220).

10. The energy storage unit cooling device of claim 1, wherein, The frame (100) is provided with an air outlet on the top, and the energy storage unit heat dissipation device further comprises a flow equalizing cover, which is located at the air outlet.

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