Energy storage box

Abstract

The embodiment of the utility model provides an energy storage box and a cooling unit, and belongs to the technical field of batteries, and the cooling unit comprises a mounting main body, a fan and a condenser. The fan is installed on the installation body. The condenser is installed on the installation body and located on the air outlet side of the draught fan. Due to the fact that the condenser is located on the air outlet side of the draught fan, on one hand, air flow blown out of the draught fan can cool the condenser through the condenser, on the other hand, air blown out of the air outlet side of the draught fan is blocked by the condenser, noise of the air outlet side of the draught fan is reduced through the blocking effect of the condenser on the air flow blown out of the air outlet side of the draught fan, and in other words, the noise of the draught fan is reduced; therefore, the noise of the cooling unit in the operation process is correspondingly reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to an energy storage box. Background Art

[0002] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in areas such as energy storage.

[0003] The battery pack in the energy storage box will generate heat during operation and needs to be cooled by a cooling unit.

[0004] In the related art, the cooling unit produces relatively large noise during operation. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides an energy storage box to reduce the noise of the cooling unit during operation.

[0006] This application is implemented through the following technical solutions.

[0007] A first aspect of an embodiment of the present application provides an energy storage box, comprising:

[0008] Box;

[0009] A battery pack is installed in the box;

[0010] A cooling unit is installed in the box body, and is used to cool the battery pack. The cooling unit includes a mounting body, a fan and a cooler. The fan is installed on the mounting body, and the condenser is installed on the mounting body. The condenser is located on the air outlet side of the fan.

[0011] In the embodiment of the present application, since the condenser is located on the air outlet side of the fan, the airflow on the air outlet side of the fan is blocked by the condenser, thereby reducing the noise on the air outlet side of the fan through the condenser, and correspondingly reducing the noise of the cooling unit during operation.

[0012] In one embodiment, the condenser and the fan are arranged at intervals.

[0013] In the embodiment of the present application, the fan is kept away from the condenser by being arranged at intervals, thereby reducing the noise on the side of the condenser facing away from the fan.

[0014] In one embodiment, the distance between the fan blades and the condenser is a target distance, the target distance is greater than 25 mm, and the target distance is less than 1 / 2 of the diameter of the fan blades.

[0015] In the embodiment of the present application, the distance between the fan blade and the condenser is relatively appropriate, so that the wind field between the fan and the condenser is more consistent, the airflow blows more evenly to the condenser, and the cooling effect of the fan on the condenser is improved. The distance between the fan blade and the condenser is relatively appropriate, and the fan is far away from the condenser, which is conducive to reducing the noise on the side of the condenser away from the fan.

[0016] In one embodiment, the target distance is greater than 30 mm, and the target distance is less than 1 / 3 of the diameter of the fan blade.

[0017] In the embodiment of the present application, the distance between the fan blade and the condenser is relatively appropriate, so that the wind field between the fan and the condenser is more consistent, the airflow blows more evenly to the condenser, and the cooling effect of the fan on the condenser is improved. The distance between the fan blade and the condenser is relatively appropriate, and the fan is far away from the condenser, which is conducive to reducing the noise on the side of the condenser away from the fan.

[0018] In one embodiment, the installation body has a first air cavity and an air outlet connected to the first air cavity, the first air cavity is located at the air outlet side of the fan, and the air outlet is located on the side of the first air cavity facing the condenser.

[0019] In the embodiment of the present application, the air outlet is located on the side of the first air cavity facing the condenser. The first air cavity guides the airflow to flow toward the air outlet so that it can flow toward the condenser as much as possible. The airflow blown out by the fan can be blocked by the condenser as much as possible, which is beneficial to reducing the noise on the air outlet side of the fan.

[0020] In one embodiment, the condenser cover is disposed at the air outlet, and / or the condenser is sealed and connected to the installation body at the air outlet.

[0021] In the embodiment of the present application, the condenser 3 is sealed and connected to the installation body 1 at the air outlet 12, and the condenser 3 is covered on the air outlet 12. The position of the condenser 3 covered on the air outlet 12 and sealed with the installation body 1 at the air outlet 12 surrounds the air outlet 12, restricting the gas from flowing out between the condenser 3 and the installation body 1, so that the airflow flowing to the air outlet 12 basically flows through the condenser 3, thereby improving the cooling effect of the fan 2 on the condenser 3. Since the airflow flowing to the air outlet 12 basically flows through the condenser 3, the airflow flowing to the air outlet 12 is basically blocked by the condenser 3, which is conducive to reducing the noise on the air outlet side of the fan 2 through the condenser 3.

[0022] In one embodiment, the condenser is located in the first air cavity.

[0023] In the embodiment of the present application, since the condenser is located in the first air cavity, most of the airflow in the first air cavity flows through the condenser first and then flows to the air outlet. The contact area between the condenser and the airflow flowing through the condenser is less affected by the size of the air outlet. The condenser can contact the airflow flowing to the air outlet over a larger area, which is beneficial to improving the cooling effect of the fan on the condenser. The condenser has a larger contact area with the airflow flowing to the air outlet, and the airflow flowing to the air outlet is greatly affected by the obstruction of the condenser, which is beneficial to reducing the noise on the air outlet side of the fan through the condenser.

[0024] In one embodiment, the cooling unit further includes a soundproof cover, and the soundproof cover is arranged on the air outlet.

[0025] In the embodiment of the present application, since the soundproof cover is arranged at the air outlet, the airflow flowing out of the air outlet is affected by the noise reduction effect of the soundproof cover, so that the noise is reduced, thereby being able to reduce the noise on the air outlet side of the fan.

[0026] In one embodiment, the cooling unit further includes a noise reduction device, wherein the noise reduction device is located between the condenser and the fan, and the material of the noise reduction device is a noise reduction material.

[0027] In the embodiment of the present application, since the fan and the condenser are arranged at intervals, a space is left between the fan and the condenser for arranging a noise reduction device. The noise reduction device is located between the condenser and the fan. The wind blown out by the fan flows to the condenser through the noise reduction device, so that the noise of the airflow flowing through the condenser and the air outlet is lower, thereby reducing the noise on the air outlet side of the fan.

[0028] In one embodiment, the fan is located inside the installation body.

[0029] In the embodiment of the present application, the installation body can, to a certain extent, block the noise inside the installation body from propagating outside the installation body, and the fan being located inside the installation body is beneficial to reducing the noise of the fan.

[0030] In one embodiment, the installation body has a first air cavity, a second air cavity, an air inlet and an air outlet, the first air cavity is located at the air outlet side of the fan, the air outlet is connected to the first air cavity, the air inlet is connected to the second air cavity, the air outlet is located on the side of the first air cavity facing the condenser, and the installation body includes:

[0031] A box body, wherein the air inlet and the air outlet are formed in the box body;

[0032] A partition wall is located in the box body, and the partition wall and the box body enclose the first air cavity and the second air cavity. The second air cavity and the air inlet are both located on the side of the partition wall away from the first air cavity. The partition wall is formed with mounting holes respectively connected to the first air cavity and the second air cavity, and the fan is installed in the mounting holes.

[0033] In the embodiment of the present application, under the action of the fan in the installation hole, the airflow outside the box enters the second air cavity through the air inlet, and the airflow in the second air cavity flows to the first air cavity under the action of the fan, and flows to the condenser and the air outlet through the first air cavity. The gas in the first air cavity is restricted from flowing back to the second air cavity by the partition wall, and the air inlet is located on the side of the partition wall away from the first air cavity, and the gas in the first air cavity hardly flows out through the air inlet. Therefore, when the fan is located in the installation body, the first air cavity can guide the airflow to the condenser at the air outlet as much as possible, so that the airflow is blocked by the condenser as much as possible, thereby reducing the noise of the fan.

[0034] In one embodiment, the fan and the condenser are arranged opposite to each other.

[0035] In the embodiment of the present application, since the fan and the condenser are arranged relative to each other, the wind blown by the fan can blow toward the condenser as directly as possible, so that the wind blown by the fan can be blocked by the condenser as much as possible, which is beneficial to reducing the noise on the air outlet side of the fan through the condenser.

[0036] In one embodiment, the cooling unit also includes a compressor, which is connected in series upstream of the condenser; or, the cooling unit also includes a compressor, a first expansion valve and a first evaporator, the first expansion valve is connected in series downstream of the condenser, the first evaporator is connected in series downstream of the first expansion valve, and the compressor is connected in series upstream of the condenser.

[0037] In the embodiment of the present application, the refrigerant is compressed by the compressor and condensed by the condenser before flowing out of the cooling unit, and the cooling unit provides the compressed and cooled refrigerant to the outside for cooling. Alternatively, the refrigerant is compressed by the compressor and condensed by the condenser before flowing to the first expansion valve and the first evaporator, and the refrigerant flows through the first evaporator to evaporate and absorb heat.

[0038] In one embodiment, the energy storage box further includes a second expansion valve and a second evaporator for cooling the battery pack, the second expansion valve is connected in series downstream of the condenser, the second evaporator is connected in series downstream of the second expansion valve, and the cooling unit further includes a compressor, which is connected in series upstream of the condenser; or, the energy storage box further includes a water-cooled cooler for cooling the battery pack, the cooling unit further includes a compressor, a first expansion valve and a first evaporator, the first expansion valve is connected in series downstream of the condenser, the first evaporator is connected in series downstream of the first expansion valve, the first evaporator is used to cool water in the water-cooled cooler, and the compressor is connected in series upstream of the condenser.

[0039] In the embodiment of the present application, the refrigerant flowing through the second evaporator directly cools the battery pack. Alternatively, the refrigerant cools the water-cooled cooler, and the cooling water in the water-cooled cooler cools the battery pack.

[0040] Effect of the invention:

[0041] The energy storage box in the embodiment of the present application has a condenser located on the air outlet side of the fan. On the one hand, the wind blown out by the fan can cool the condenser through the condenser. On the other hand, the wind blown out from the air outlet side of the fan is blocked by the condenser. The blocking effect of the condenser on the air flow blown out from the air outlet side of the fan reduces the noise on the air outlet side of the fan, that is, reduces the noise of the fan, thereby correspondingly reducing the noise of the cooling unit during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0043] Figure 1 This is a schematic diagram of the structure of a cooling unit according to an embodiment of the present application, in which the target distance and the fan blade diameter are not shown;

[0044] Figure 2 This is a schematic diagram of the structure of a cooling unit according to an embodiment of the present application, which shows the target distance and the fan blade diameter;

[0045] Figure 3 for Figure 2 A-direction view in the figure;

[0046] Figure 4 This is a schematic diagram of the connection structure of the compressor, condenser, first expansion valve, first evaporator, water-cooled cooler and battery pack of an embodiment of the present application.

[0047] Description of Reference Numerals

[0048] 1. Installation body; 11. First air cavity; 12. Air outlet; 13. Second air cavity; 14. Air inlet; 15. Box; 16. Partition wall; 161. Installation hole; 2. Fan; 3. Condenser; 4. Soundproof cover; 5. Noise reduction device; 6. Compressor; 7. First expansion valve; 8. First evaporator; 91. Water-cooled cooler; 92. Battery pack. DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the embodiments of this application and any variations thereof are intended to cover non-exclusive inclusions.

[0051] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0052] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0053] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0054] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0055] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0056] As part of the creative concept of the present application, before describing the embodiments of the present application, it is necessary to analyze the reasons why the cooling unit produces large noise during operation in the related technology, and obtain the technical solution of the embodiments of the present application through reasonable analysis.

[0057] In the related art, the cooling unit includes a compressor, a condenser, an evaporator and a fan. The refrigerant circulates between the compressor, the condenser and the evaporator. The refrigerant performs heat exchange at the evaporator to cool the battery pack in the energy storage box. The refrigerant flowing through the evaporator flows back to the compressor, and the refrigerant is compressed by the compressor. The compressed high-temperature refrigerant flows through the condenser for condensation, and the fan performs forced air cooling on the condenser. During the operation of the cooling unit, the fan for forced air cooling of the condenser stirs the airflow and makes a loud noise. The fan mainly produces a loud noise on the air outlet side.

[0058] The embodiment of the present application reduces the fan noise by arranging the condenser on the air outlet side of the fan.

[0059] The number of battery cells can be multiple, and the multiple battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells are both connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in a mixed connection to form a battery pack. Of course, multiple battery cells can first be connected in series, in parallel, or in a mixed connection to form a battery module, and multiple battery modules can then be connected in series, in parallel, or in a mixed connection to form a battery pack. The battery pack may also include other structures. For example, the battery pack may also include a busbar component for realizing electrical connection between multiple battery cells.

[0060] A battery cell refers to the basic unit that can realize the mutual conversion between chemical energy and electrical energy.

[0061] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0062] In the embodiment of the present application, the battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., but the embodiment of the present application is not limited to this.

[0063] An embodiment of the present application provides an energy storage box, which includes a box body 15, a battery pack and a cooling unit. The battery pack is installed in the box body 15, and the cooling unit is installed in the box body 15. The cooling unit is used to cool the battery pack.

[0064] In the embodiment of the present application, the energy storage box stores electrical energy or supplies power to the outside through the battery pack, and cools the battery pack through the cooling unit.

[0065] The cooling unit of the present application embodiment can be found in Figure 1 to Figure 3 The cooling unit includes a mounting body 1, a fan 2 and a condenser 3. The fan 2 is mounted on the mounting body 1. The condenser 3 is mounted on the mounting body 1, and the condenser 3 is located at the air outlet side of the fan 2.

[0066] The installation body 1 is the main supporting structure of the cooling unit, and the installation body 1 provides an installation basis for other components of the cooling unit.

[0067] The fan 2 is mainly used to stir the gas fluid so that an airflow with a certain speed flows through the condenser 3 , thereby realizing forced air cooling of the condenser 3 .

[0068] The condenser 3 is mainly used to condense the refrigerant. The condenser 3 is forced to be air-cooled by the fan 2, thereby condensing the refrigerant in the condenser 3.

[0069] For example, see Figure 3 The number of condensers 3 is multiple, and the multiple condensers 3 are arranged in the up and down direction.

[0070] In the embodiment of the present application, since the condenser 3 is located on the air outlet side of the fan 2, on the one hand, the air flow blown out by the fan 2 can cool the condenser 3 through the condenser 3, and on the other hand, the air blown out from the air outlet side of the fan 2 is blocked by the condenser 3. The blocking effect of the condenser 3 on the air flow blown out from the air outlet side of the fan 2 reduces the noise on the air outlet side of the fan 2, that is, the noise of the fan 2 is reduced, thereby correspondingly reducing the noise of the cooling unit during operation.

[0071] In one embodiment, please refer to Figure 1 to Figure 3 , the condenser 3 and the fan 2 are arranged at intervals.

[0072] Exemplarily, the condenser 3 and the fan blades of the fan 2 are arranged at intervals.

[0073] In the embodiment of the present application, the condenser 3 is spaced a certain distance from the fan 2, and a certain space is left between the condenser 3 and the fan 2 for the airflow blown out from the air outlet side of the fan 2 to be spread more evenly, which is conducive to the wind from the air outlet side of the fan 2 to be blown evenly to the condenser 3, so that different positions of the condenser 3 can be cooled more evenly as much as possible. The condenser 3 is spaced a certain distance from the fan 2, and the fan 2 is far away from the condenser 3, which is conducive to reducing the noise on the side of the condenser 3 away from the fan 2.

[0074] It is understandable that the condenser 3 and the fan 2 are not limited to be arranged with a gap. For example, the condenser 3 and the fan 2 can be in contact with each other without a gap between them.

[0075] In one embodiment, please refer to Figure 2 The distance between the fan blades of the fan 2 and the condenser 3 is the target distance, the target distance is greater than 25 mm, and the target distance is less than 1 / 2 of the diameter of the fan blades of the fan 2.

[0076] The fan 2 for forced air cooling of the condenser 3 needs to have a large air volume, and the fan blade diameter of the corresponding fan 2 is relatively large, and 1 / 2 of the fan blade diameter will be greater than 25 mm.

[0077] For example, according to different actual needs, the diameter of the fan blade of the fan 2 is different. For example, the diameter of the fan blade of the fan 2 can be 320 mm, or the diameter of the fan blade of the fan 2 can be 560 mm.

[0078] Exemplarily, after the fan 2 and the condenser 3 are assembled to the installation body 1 , the target distance is measured by a measuring tape or a tape measure.

[0079] For example, see Figure 2 , the target distance is D1, the fan blade diameter is D2,

[0080] Exemplarily, the diameter of the fan blade is 320 mm. 25 mm ≤ D1 ≤ 160 mm.

[0081] Illustratively, the target distance may be 25 mm, 50 mm, 80 mm, 100 mm, 120 mm, 145 mm or 160 mm.

[0082] Exemplarily, the fan blade has a diameter of 560 mm. 25 mm ≤ D1 ≤ 280 mm.

[0083] Exemplarily, the diameter of the fan blade can be 25 mm, 80 mm, 120 mm, 160 mm, 180 mm, 220 mm, 240 mm, 260 mm or 280 mm.

[0084] In the embodiment of the present application, the wind blown by the fan 2 is mainly driven by the rotation of the fan blades, and the target distance is greater than 25 mm and less than 1 / 2 of the diameter of the fan blades of the fan 2, so that the distance between the fan blades and the condenser 3 is more appropriate, and the wind field consistency on the wind outlet side of the fan 2 is better, which is conducive to the wind on the wind outlet side of the fan 2 blowing more evenly toward the condenser 3. The fan 2 and the condenser 3 are separated by a more appropriate distance, and the fan 2 is far away from the condenser 3, which is conducive to reducing the noise on the side of the condenser 3 away from the fan 2.

[0085] In one embodiment, please refer to Figure 2 , the target distance is greater than 30 mm, and the target distance is less than 1 / 3 of the diameter of the fan blade of fan 2.

[0086] The fan 2 for forced air cooling of the condenser 3 needs to have a large air volume, and the fan blade diameter of the corresponding fan 2 is relatively large, and 1 / 3 of the fan blade diameter will be greater than 30 mm.

[0087] For example, according to different actual needs, the diameter of the fan blade of the fan 2 is different. For example, the diameter of the fan blade of the fan 2 can be 320 mm, or the diameter of the fan blade of the fan 2 can be 560 mm.

[0088] For example, see Figure 2 , the target distance is D1, the fan blade diameter is D2,

[0089] Exemplarily, the diameter of the fan blade is 320 mm.

[0090] For example, the target distance may be 30 mm, 40 mm, 60 mm, 85 mm, 95 mm, 100 mm or more.

[0091] Exemplarily, the diameter of the fan blade is 560 mm.

[0092] For example, the diameter of the fan blade can be 30mm, 50mm, 80mm, 110mm, 130mm, 140mm, 150mm, 160mm or more.

[0093] In the embodiment of the present application, the wind blown out by the fan 2 is mainly driven by the rotation of the fan blades, and the target distance is greater than 30 mm and less than 1 / 3 of the diameter of the fan blades of the fan 2, so that the distance between the fan blades and the condenser 3 is more appropriate, and the wind field consistency on the wind outlet side of the fan 2 is better, which is conducive to the wind on the wind outlet side of the fan 2 blowing more evenly toward the condenser 3. The fan 2 and the condenser 3 are separated by a relatively appropriate distance, and the fan 2 is far away from the condenser 3, which is conducive to reducing the noise on the side of the condenser 3 away from the fan 2.

[0094] In one embodiment, please refer to Figure 1 and Figure 2 The installation body 1 has a first air cavity 11 and an air outlet 12 connected to the first air cavity 11 . The first air cavity 11 is located at the air outlet side of the fan 2 , and the air outlet 12 is located at a side of the first air cavity 11 facing the condenser 3 .

[0095] The first air cavity 11 is a space through which air flows.

[0096] The air flow in the first air cavity 11 flows out from the air outlet 12 .

[0097] In the embodiment of the present application, the first air cavity 11 is located at the air outlet side of the fan 2, and the wind blown by the fan 2 flows toward the first air cavity 11. The wind blown by the fan 2 flows out of the first air cavity 11 from the air outlet 12 under the guidance of the first air cavity 11. Since the air outlet 12 is located on the side of the first air cavity 11 facing the condenser 3, the airflow flowing toward the air outlet 12 under the guidance of the first air cavity 11 can flow through the condenser 3 as much as possible, so that the wind blown by the fan 2 flows toward the condenser 3 as much as possible under the guidance of the first air cavity 11, which is conducive to improving the air cooling effect of the fan 2 on the condenser 3. The wind blown by the fan 2 flows toward the condenser 3 as much as possible under the guidance of the first air cavity 11, and is blocked by the condenser 3 to a certain extent, thereby improving the noise reduction effect of the condenser 3 on the air outlet side of the fan 2.

[0098] It is understandable that the position of the air outlet 12 is not limited. Exemplarily, the air outlet 12 is on one side of the first air cavity 11, and the condenser 3 is on the other side of the first air cavity 11. For example, the condenser 3 is located on the side of the first air cavity 11 facing the fan 2, and the air outlet 12 is located on the side of the first air cavity 11 facing away from the fan 2.

[0099] It is understandable that the fan 2 and the condenser 3 may be arranged at intervals, and the installation body 1 is not provided with the first air cavity 11 and the corresponding air outlet 12 for guiding the flow of air.

[0100] In one embodiment, please refer to Figure 1 to Figure 3 The condenser 3 is covered at the air outlet 12 .

[0101] The condenser 3 is covered on the air outlet 12 , and the air outlet 12 is basically within the coverage of the condenser 3 .

[0102] Exemplarily, the number of the air outlet 12 is one, and along the air outlet direction of the air outlet 12 , the projection area of ​​the air outlet 12 is located within the projection area of ​​the condenser 3 .

[0103] See also Figure 1 and Figure 2 , the air outlet direction is the direction indicated by the arrow R1 in the figure.

[0104] For example, see Figure 1 to Figure 3The number of the air outlets 12 can be multiple, and the air outlet directions of the multiple air outlets 12 are consistent. Along the air outlet directions of the air outlets 12, the projection areas of the air outlets 12 are located within the projection area of ​​the condenser 3.

[0105] Exemplarily, the number of air outlets 12 may be multiple, and the air outlet directions of at least two air outlets 12 may be different, and the projection area of ​​each air outlet 12 along the corresponding air outlet direction is located in the projection area of ​​the condenser 3 along the corresponding air outlet direction. For example, among the at least two air outlets 12, the air outlet direction of one air outlet 12 is a first direction, and the projection area of ​​the air outlet 12 along the first direction is located in the projection area of ​​the condenser 3 along the first direction, and the air outlet direction of the other air outlet 12 is a second direction, and the projection area of ​​the air outlet 12 along the second direction is located in the projection area of ​​the condenser 3 in the second direction.

[0106] For example, see Figure 1 and Figure 3 , the condenser 3 can be roughly arranged in one plane.

[0107] Exemplarily, the center lines of the condensation tubes of the condenser 3 are substantially in one plane.

[0108] Exemplarily, the overall shape of the condenser 3 is L-shaped or U-shaped.

[0109] In the embodiment of the present application, since the condenser 3 is covered at the air outlet 12, the airflow from the first air cavity 11 to the air outlet 12 is basically within the range covered by the condenser 3, and the airflow from the first air cavity 11 to the air outlet 12 can flow through the condenser 3 as much as possible, thereby improving the cooling effect of the fan 2 on the condenser 3. The airflow from the first air cavity 11 to the air outlet 12 can flow through the condenser 3 as much as possible, and the airflow from the first air cavity 11 to the air outlet 12 can be blocked by the condenser 3 as much as possible, which is conducive to reducing the noise on the air outlet side of the fan 2 through the condenser 3.

[0110] It is understandable that the arrangement of the condenser 3 and the air outlet 12 is not limited. The condenser 3 and the air outlet 12 can be staggered with each other.

[0111] In one embodiment, the condenser 3 is sealedly connected to the installation body 1 at the air outlet 12 .

[0112] Exemplarily, the condenser 3 and the installation body 1 may be sealed by using sealant or by providing a corresponding sealing member.

[0113] In the embodiment of the present application, the condenser 3 is sealed with the installation body 1, which can limit the airflow from between the condenser 3 and the installation body 1 to a certain extent, and can guide the airflow to flow to the condenser 3 as much as possible, which is conducive to improving the cooling effect of the fan 2 on the condenser 3. The condenser 3 is sealed with the installation body 1, which can guide the airflow to flow to the condenser 3 as much as possible, so that the airflow blown by the fan 2 is blocked by the condenser 3 as much as possible, which is conducive to reducing the noise on the air outlet side of the fan 2 through the condenser 3.

[0114] In one embodiment, please refer to Figure 1 to Figure 3 The condenser 3 is covered at the air outlet 12 , and the condenser 3 is sealed and connected to the installation body 1 at the air outlet 12 .

[0115] In the embodiment of the present application, the condenser 3 is sealed and connected to the installation body 1 at the air outlet 12, and the condenser 3 is covered on the air outlet 12. The position of the condenser 3 covered on the air outlet 12 and sealed with the installation body 1 at the air outlet 12 surrounds the air outlet 12, restricting the gas from flowing out between the condenser 3 and the installation body 1, so that the airflow flowing to the air outlet 12 basically flows through the condenser 3, thereby improving the cooling effect of the fan 2 on the condenser 3. Since the airflow flowing to the air outlet 12 basically flows through the condenser 3, the airflow flowing to the air outlet 12 is basically blocked by the condenser 3, which is conducive to reducing the noise on the air outlet side of the fan 2 through the condenser 3.

[0116] It is understandable that the condenser 3 and the installation body 1 may not be sealed.

[0117] In one embodiment, please refer to Figure 1 and Figure 2 , the condenser 3 is located in the first wind cavity 11.

[0118] In the embodiment of the present application, since the condenser 3 is located in the first air cavity 11, most of the airflow in the first air cavity 11 first flows through the condenser 3 and then flows to the air outlet 12. The contact area between the condenser 3 and the airflow flowing through the condenser 3 is less affected by the size of the air outlet 12. The condenser 3 can contact the airflow flowing to the air outlet 12 over a larger area, which is beneficial to improving the cooling effect of the fan 2 on the condenser 3. The condenser 3 has a larger contact area with the airflow flowing to the air outlet 12, and the airflow flowing to the air outlet 12 is greatly affected by the obstruction of the condenser 3, which is beneficial to reducing the noise on the air outlet side of the fan 2 through the condenser 3.

[0119] It is understandable that the position of the condenser 3 relative to the first air cavity 11 is not limited. Exemplarily, the condenser 3 is located on the side of the air outlet 12 away from the first air cavity 11 , and the condenser 3 is located outside the first air cavity 11 .

[0120] In one embodiment, please refer to Figure 1 and Figure 2 The cooling unit further includes a noise reduction device 5, which is located between the condenser 3 and the fan 2, and the material of the noise reduction device 5 is a noise reduction material.

[0121] Exemplarily, the noise reduction material may be sound insulation cotton.

[0122] In the embodiment of the present application, since the fan 2 and the condenser 3 are arranged at intervals, a space is left between the fan 2 and the condenser 3 for arranging the noise reduction device 5. The noise reduction device 5 is located between the condenser 3 and the fan 2. The wind blown out by the fan 2 flows to the condenser 3 through the noise reduction device 5, so that the noise of the airflow flowing through the condenser 3 and the air outlet 12 is lower, thereby reducing the noise on the air outlet side of the fan 2.

[0123] In one embodiment, please refer to Figure 1 and Figure 2 The cooling unit further includes a sound insulation cover 4, which is arranged on the air outlet 12.

[0124] Exemplarily, the soundproof cover 4 may be a sound-absorbing shutter.

[0125] In the embodiment of the present application, since the soundproof cover 4 is disposed over the air outlet 12 , the airflow flowing out of the air outlet 12 is affected by the noise reduction effect of the soundproof cover 4 and the noise is reduced, thereby being able to reduce the noise on the air outlet side of the fan 2 .

[0126] In one embodiment, please refer to Figure 1 and Figure 2 , the fan 2 and the condenser 3 are arranged opposite to each other.

[0127] In the embodiment of the present application, since the fan 2 and the condenser 3 are arranged relative to each other, the wind blown by the fan 2 can be blown directly toward the condenser 3 as much as possible, so that the wind blown by the fan 2 can be blocked by the condenser 3 as much as possible, which is beneficial to reducing the noise on the air outlet side of the fan 2 through the condenser 3.

[0128] In one embodiment, please refer to Figure 1 and Figure 2 , the fan 2 is located in the installation body 1.

[0129] In the embodiment of the present application, the installation body 1 can, to a certain extent, block the noise inside the installation body 1 from propagating to the outside of the installation body 1 , and the fan 2 being located inside the installation body 1 is beneficial to reducing the noise of the fan 2 .

[0130] In one embodiment, please refer to Figure 1 and Figure 2The installation body 1 has a first air cavity 11, a second air cavity 13, an air inlet 14 and an air outlet 12. The first air cavity 11 is located at the air outlet side of the fan 2. The air outlet 12 is connected to the first air cavity 11. The air inlet 14 is connected to the second air cavity 13. The air outlet 12 is located on the side of the first air cavity 11 facing the condenser 3. The installation body 1 includes a box body 15 and a partition wall 16. The air inlet 14 and the air outlet 12 of the box body 15 are formed in the box body 15. The partition wall 16 is located in the box body 15. The partition wall 16 and the box body 15 are surrounded to form the first air cavity 11 and the second air cavity 13. The second air cavity 13 and the air inlet 14 are both located on the side of the partition wall 16 away from the first air cavity 11. The partition wall 16 is formed with a mounting hole 161 respectively connected to the first air cavity 11 and the second air cavity 13. The fan 2 is installed in the mounting hole 161.

[0131] The gas outside the box 15 enters the box 15 through the air inlet 14 , and the gas inside the box 15 is discharged outside the box 15 through the air outlet 12 .

[0132] The space inside the box body 15 is divided into a first air cavity 11 and a second air cavity 13 by a partition wall 16 .

[0133] The second air cavity 13 is a space in the box body 15 mainly used for air intake.

[0134] The first air cavity 11 is a space in the box body 15 mainly used for air outlet.

[0135] The mounting hole 161 communicates with the first air cavity 11 and the second air cavity 13 , and the airflow in the second air cavity 13 can flow into the first air cavity 11 through the mounting hole 161 .

[0136] In the embodiment of the present application, under the action of the fan 2 in the mounting hole 161, the airflow outside the box 15 enters the second air cavity 13 through the air inlet 14, and the airflow in the second air cavity 13 flows to the first air cavity 11 under the action of the fan 2, and flows to the condenser 3 and the air outlet 12 through the first air cavity 11. The gas in the first air cavity 11 is restricted from flowing back to the second air cavity 13 by the partition wall 16, and the air inlet 14 is located on the side of the partition wall 16 away from the first air cavity 11, and the gas in the first air cavity 11 will hardly flow out through the air inlet 14, so that when the fan 2 is located in the mounting body 1, the first air cavity 11 can guide the airflow to the condenser 3 at the air outlet 12 as much as possible, so that the airflow is blocked by the condenser 3 as much as possible, thereby reducing the noise of the fan 2.

[0137] In one embodiment, please refer to Figure 4 The cooling unit further comprises a compressor 6, which is connected in series upstream of the condenser.

[0138] In the embodiment of the present application, the refrigerant is compressed by the compressor 6 and flows to the condenser 3 for cooling. The refrigerant is compressed by the compressor 6 to release heat. The refrigerant with a higher temperature and pressure after being compressed by the compressor 6 enters the condenser for cooling.

[0139] It is understandable that the cooling unit may not be provided with a compressor 6. For example, the energy storage box further includes a compressor 6 located in the box body 15, and the cooling unit is no longer provided with a compressor 6 separately.

[0140] In one embodiment, please refer to Figure 4 The cooling unit further includes a compressor 6, a first expansion valve 7 and a first evaporator 8. The first expansion valve 7 is connected in series downstream of the condenser, the first evaporator 8 is connected in series downstream of the first expansion valve 7, and the compressor 6 is connected in series upstream of the condenser.

[0141] In the embodiment of the present application, the condenser cools the refrigerant compressed by the compressor 6. The refrigerant cooled by the condenser is throttled and expanded by the first expansion valve 7 and then evaporated and absorbed heat by the first evaporator 8.

[0142] In one embodiment, the energy storage box further includes a second expansion valve and a second evaporator for cooling the battery pack 92 , the second expansion valve is connected in series downstream of the condenser, and the second evaporator is connected in series downstream of the second expansion valve.

[0143] In the embodiment of the present application, the refrigerant entering the cooling unit is compressed by the compressor 6 and flows to the condenser for air-cooling condensation. The refrigerant condensed by the condenser flows out of the cooling unit and flows to the second expansion valve. After cooling and throttling expansion by the second expansion valve, it flows to the second evaporator for evaporation and heat absorption. The refrigerant in the second evaporator in the energy storage box evaporates and absorbs heat to directly cool the battery pack 92. The refrigerant that evaporates and absorbs heat in the second evaporator flows back into the cooling unit.

[0144] In one embodiment, please refer to Figure 4 The energy storage box also includes a water-cooled cooler 91 for cooling the battery pack 92. The cooling unit also includes a compressor 6, a first expansion valve 7 and a first evaporator 8. The first expansion valve 7 is connected in series downstream of the condenser. The first evaporator 8 is connected in series downstream of the first expansion valve 7. The first evaporator 8 is used to cool the water in the water-cooled cooler 91. The compressor 6 is connected in series upstream of the condenser.

[0145] In the embodiment of the present application, the refrigerant entering the cooling unit is compressed by the compressor 6 and flows to the condenser for air-cooling condensation. The refrigerant condensed by the condenser flows to the first expansion valve 7 for throttling expansion. The refrigerant throttling expansion by the first expansion valve 7 flows to the first evaporator 8 for evaporation and heat absorption. The battery pack 92 is cooled by the water-cooled cooler 91. The cooling water in the water-cooled cooler 91 absorbs the heat released by the battery pack 92 and flows to the side close to the first evaporator 8 to exchange heat with the first evaporator 8, so that the cooling water in the water-cooled cooler 91 can be cooled by the first evaporator 8. The cooled cooling water in the water-cooled cooler 91 flows to the battery pack 92 to cool the battery pack 92.

[0146] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. An energy storage box, characterized in that: include: Box; A battery pack is installed in the box; A cooling unit is installed in the box body, and the cooling unit is used to cool the battery pack. The cooling unit includes a mounting body, a fan and a cooler. The fan is installed on the mounting body, and the condenser is installed on the mounting body. The condenser is located on the air outlet side of the fan.

2. The energy storage box according to claim 1, characterized in that: The condenser and the fan are arranged at intervals.

3. The energy storage box according to claim 2, characterized in that: The distance between the fan blades and the condenser is a target distance, which is greater than 25 mm and less than 1 / 2 of the diameter of the fan blades.

4. The energy storage box according to claim 3, characterized in that: The target distance is greater than 30 mm, and the target distance is less than 1 / 3 of the diameter of the fan blade.

5. The energy storage box according to claim 2, characterized in that: The installation body has a first air cavity and an air outlet communicated with the first air cavity, the first air cavity is located at the air outlet side of the fan, and the air outlet is located at a side of the first air cavity facing the condenser.

6. The energy storage box according to claim 5, characterized in that: The condenser cover is arranged at the air outlet, and / or the condenser is sealed and connected to the installation body at the air outlet.

7. The energy storage box according to claim 5, characterized in that: The condenser is located in the first wind cavity.

8. The energy storage box according to claim 5, characterized in that: The cooling unit further comprises a soundproof cover, and the soundproof cover is arranged on the air outlet.

9. The energy storage box according to claim 2, characterized in that: The cooling unit further comprises a noise reduction device, wherein the noise reduction device is located between the condenser and the fan, and the material of the noise reduction device is a noise reduction material.

10. The energy storage box according to claim 1, characterized in that: The fan is located in the installation body.

11. The energy storage box according to claim 10, characterized in that: The installation body has a first air cavity, a second air cavity, an air inlet and an air outlet, the first air cavity is located at the air outlet side of the fan, the air outlet is connected to the first air cavity, the air inlet is connected to the second air cavity, the air outlet is located on the side of the first air cavity facing the condenser, and the installation body includes: A box body, wherein the air inlet and the air outlet are formed in the box body; A partition wall is located in the box body, and the partition wall and the box body enclose the first air cavity and the second air cavity. The second air cavity and the air inlet are both located on the side of the partition wall away from the first air cavity. The partition wall is formed with mounting holes respectively connected to the first air cavity and the second air cavity, and the fan is installed in the mounting holes.

12. The energy storage box according to any one of claims 1 to 11, characterized in that: The fan and the condenser are arranged opposite to each other.

13. The energy storage box according to any one of claims 1 to 11, characterized in that: The cooling unit also includes a compressor, which is connected in series upstream of the condenser; or, the cooling unit also includes a compressor, a first expansion valve and a first evaporator, the first expansion valve is connected in series downstream of the condenser, the first evaporator is connected in series downstream of the first expansion valve, and the compressor is connected in series upstream of the condenser.

14. The energy storage box according to any one of claims 1 to 11, characterized in that: The energy storage box also includes a second expansion valve and a second evaporator for cooling the battery pack, the second expansion valve is connected in series downstream of the condenser, the second evaporator is connected in series downstream of the second expansion valve, and the cooling unit also includes a compressor, which is connected in series upstream of the condenser; or, the energy storage box also includes a water-cooled cooler for cooling the battery pack, the cooling unit also includes a compressor, a first expansion valve and a first evaporator, the first expansion valve is connected in series downstream of the condenser, the first evaporator is connected in series downstream of the first expansion valve, the first evaporator is used to cool water in the water-cooled cooler, and the compressor is connected in series upstream of the condenser.

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