energy storage cabinet
By setting air vents on the two side panels and top of the energy storage cabinet and using the cooling medium to exchange heat with the air, the problem of insufficient effective energy storage in the energy storage cabinet is solved, achieving more efficient cooling and a larger energy storage space.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAWEI TECH CO LTD
- Filing Date
- 2025-04-11
- Publication Date
- 2026-07-03
Smart Images
Figure CN224458194U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of energy storage technology, and in particular to an energy storage cabinet. Background Technology
[0002] In energy storage cabinets, a cooling unit is usually installed on top of the cabinet as the main body of the thermal management system. The heat exchange efficiency between the external heat exchanger and the air in the cooling unit will affect the cooling effect of the cooling unit on the battery.
[0003] Therefore, in order to effectively dissipate heat from the batteries in the energy storage cabinet, related technologies typically incorporate large air vents on one side of the cabinet to allow outside air to enter and exchange heat with the external heat exchanger in the cooling unit. However, placing a large air vent on one side of the cabinet results in a longer vent along the cabinet's height, reducing the space available for battery placement and compressing the cabinet's effective energy storage capacity. Utility Model Content
[0004] This application provides an energy storage cabinet that increases the effective energy storage capacity of the energy storage cabinet while effectively dissipating heat.
[0005] To achieve the above objectives, this application adopts the following technical solution:
[0006] This application provides an energy storage cabinet, which includes a cabinet body, at least one battery cluster, and at least one cooling unit. The cabinet body includes a separated energy storage cavity and a heat dissipation cavity, with the heat dissipation cavity located above the energy storage cavity. At least one battery cluster is located within the energy storage cavity, and each battery cluster includes multiple batteries arranged along the height direction of the cabinet body. Each battery includes a cooling channel for supplying cooling medium. At least one cooling unit is located within the heat dissipation cavity and is used to cool the cooling medium. Each cooling unit is located above a corresponding battery cluster, and each cooling unit includes a drive pump and multiple heat exchangers. The drive pump is used to drive the cooling medium to flow. The cabinet body includes two side plates arranged along its own thickness direction, with the drive pump located between the two side plates. At least one heat exchanger is disposed between each side plate and the drive pump. Each side plate has a first air vent communicating with the heat dissipation cavity, and the top of the cabinet body has a second air vent communicating with the heat dissipation cavity. Ventilation is provided between each first air vent and the second air vent.
[0007] The energy storage cabinet can use liquid cooling to dissipate heat from multiple batteries in each battery cluster. Driven by a pump, the cooling medium enters the cooling channel of the battery and exchanges heat with the battery cells. After the cooling medium removes the heat from the battery, it enters at least one heat exchanger to exchange heat with air or refrigerant. After the cooling medium cools down in the heat exchanger, it flows back into the cooling channel of the battery to continuously cool the battery cluster, thus achieving temperature control of the energy storage cabinet.
[0008] The system includes multiple heat exchangers, including one for exchanging heat with the air outside the cabinet (an external heat exchanger). The heat exchange efficiency between the external heat exchanger and the air affects the cooling effect of the cooling medium on the battery cluster. Therefore, a large-area air vent is required to allow air from outside the cabinet to enter the heat dissipation cavity. In this application, a first air vent is provided on each of the two side panels of the cabinet, and a second air vent is provided on the top of the cabinet. Air from outside the cabinet can enter the heat dissipation cavity through the first air vents on the two side panels and then exit through the second air vent. Air from outside the cabinet can also enter the heat dissipation cavity through the second air vent and then exit through the first air vents on the two side walls. Furthermore, in addition to the first air vents on each side panel, a heat exchanger (an external heat exchanger) is provided between the drive pump and each side panel. After the air enters the heat dissipation cavity, it passes through the heat exchanger between the side panel and the drive pump, achieving heat exchange between the heat exchanger and the air outside the cabinet.
[0009] With the same air intake or exhaust volume, compared to the related technologies that only set air vents on one side of the cabinet panel, setting first air vents on both side panels of the cabinet can reduce the area occupied by the first air vent on each side panel. This ensures that the air intake or exhaust volume is large enough (that is, to effectively dissipate heat from the battery clusters), and the first air vent has a shorter dimension in the height direction of the cabinet. This allows for more space inside the cabinet for the battery clusters, increasing the effective energy storage capacity of the energy storage cabinet.
[0010] In one optional embodiment, at least one heat exchanger located between the drive pump and the side plate is plate-shaped. The length and width of the plate-shaped heat exchanger are both greater than its thickness. The plate-shaped heat exchanger has two ventilation surfaces perpendicular to its own thickness direction. One ventilation surface faces the second air outlet, and the other ventilation surface faces the bottom surface of the heat dissipation cavity. Ventilation is provided between the two ventilation surfaces. The angle between each ventilation surface and the bottom surface is an acute angle. The edge of the plate-shaped heat exchanger facing the side plate is higher than the edge facing the drive pump.
[0011] At least one heat exchanger is tilted, with the tilted heat exchanger positioned higher towards the first edge of the side plate. This allows the airflow between the first and second air inlets to better exchange heat with the tilted heat exchanger. For example, when the first air inlet is the inlet and the second air inlet is the outlet, the air entering the heat dissipation chamber from the first air inlet passes through the tilted heat exchanger more before exiting through the second air inlet. Similarly, when the second air inlet is the inlet and the first air inlet is the outlet, the air entering the heat dissipation chamber from the second air inlet passes through the tilted heat exchanger more before exiting through the first air inlet. This design improves the cooling capacity of the cooling unit for the battery cluster.
[0012] In one alternative embodiment, the plate-shaped heat exchanger faces the edge of the side plate and is also higher than the top of the first air vent on the side plate it faces.
[0013] When the edge of the heat exchanger facing the side plate is higher than the first air inlet, most of the air in the heat dissipation cavity can pass through the heat exchanger and exchange heat with it. For example, most of the air entering the heat dissipation cavity from the first air inlet will pass through the heat exchanger and then be discharged through the second air inlet; similarly, most of the air entering the heat dissipation cavity from the second air inlet will also pass through the heat exchanger and then be discharged through the first air inlet.
[0014] In one optional embodiment, at least one heat exchanger located between the drive pump and the side plate is plate-shaped, with both its length and width being greater than its thickness. The plate-shaped heat exchanger has two ventilation surfaces perpendicular to its thickness direction, one ventilation surface facing the second air outlet and the other ventilation surface facing the bottom surface of the heat dissipation cavity. Ventilation is provided between the two ventilation surfaces, and each ventilation surface is parallel to the bottom surface of the heat dissipation cavity. In the height direction of the cabinet, the distance between the plate-shaped heat exchanger and the second air outlet is less than the distance between the plate-shaped heat exchanger and the battery cluster.
[0015] The heat exchanger is installed horizontally within the heat dissipation chamber, and its proximity to the second air inlet allows more air to pass through and exchange heat with the heat exchanger between the first and second air inlets, thus improving the cooling unit's cooling capacity for the battery clusters. For example, most of the air entering the heat dissipation chamber from the first air inlet can pass through the heat exchanger before being discharged through the second air inlet; conversely, most of the air entering the heat dissipation chamber from the second air inlet can also pass through the heat exchanger before being discharged through the first air inlet.
[0016] In one alternative embodiment, the ventilation surface of the plate-shaped heat exchanger facing the bottom is higher than the top of the first air inlet.
[0017] By placing the heat exchanger above the first air inlet, most of the air between the second air inlet and each of the first air inlets can pass through the heat exchanger, further improving the efficiency of heat exchange between the heat exchanger and the air.
[0018] In one alternative implementation, in the thickness direction of the cabinet, a portion of the second air vent is located between one of the side panels and the drive pump, and another portion of the second air vent is located between the other side panel and the drive pump.
[0019] A portion of a second air vent is provided on each side of the drive pump. The space on both sides of the drive pump can be connected to the outside of the cabinet through the second air vent, which is conducive to heat exchange between the heat exchangers on both sides of the drive pump and the air, making the heat exchange capacity of the heat exchangers on both sides of the drive pump more balanced.
[0020] In one alternative embodiment, the cabinet further includes two end plates arranged along its width, at least one end plate having a third air vent communicating with the heat dissipation cavity.
[0021] By incorporating a third air vent, more cabinet panels are equipped with air vents. On one hand, this allows more outside air to enter the heat dissipation chamber and enables faster exhaust of gases from within, further improving the efficiency of heat exchange between the heat exchanger and the air, and enhancing the cooling unit's cooling capacity for the battery clusters. On the other hand, the simultaneous intake and exhaust of multiple air vents also allows for shorter dimensions of the first and third air vents along the cabinet's height, providing more internal space for battery cluster placement and further increasing the effective energy storage capacity of the energy storage cabinet.
[0022] In one alternative implementation, in the thickness direction of the cabinet, a portion of the third air vent is located between one of the side panels and the drive pump, and another portion of the third air vent is located between the other side panel and the drive pump.
[0023] With a third air vent installed in the cabinet, there are third air vents on both sides of the drive pump. The spaces on both sides of the drive pump can be connected to the outside of the cabinet through the third air vents, which is beneficial for the heat exchangers on both sides of the drive pump to exchange heat with the air.
[0024] In one optional embodiment, each cooling unit further includes multiple fans, which are disposed at the second air outlet, and at least one fan is disposed between each side plate and the drive pump; or, at least one fan is disposed at the first air outlet on each side plate.
[0025] The fan can be set at the first air vent or the second air vent. Driven by multiple fans, the airflow can be accelerated, so that the air entering the heat dissipation cavity can exchange heat with the heat exchanger and then be quickly discharged to the outside of the cabinet. This further improves the efficiency of heat exchange between the heat exchanger and the air, and enhances the cooling capacity of the cooling unit for the battery cluster.
[0026] In one optional embodiment, multiple fans are disposed at the second air outlet, and two of the multiple fans are disposed between at least one side plate and the drive pump, with the arrangement direction of the two fans forming an acute angle with the thickness direction of the cabinet.
[0027] By arranging the two fans between the side panel and the drive pump in the above manner, the space between the side panel and the drive pump can be fully utilized, allowing each fan to be designed to be larger, which is beneficial for driving the airflow inside and outside the cabinet.
[0028] In one optional implementation, each first air vent is an air inlet and the second air vent is an air outlet; or, the second air vent is an air inlet and each first air vent is an air outlet.
[0029] When the first air inlet is the air inlet and the second air inlet is the air outlet, the air entering the heat dissipation chamber from the first air inlet passes through the heat exchanger and is then discharged through the second air inlet; when the second air inlet is the air inlet and the first air inlet is the air outlet, the air entering the heat dissipation chamber from the second air inlet passes through the heat exchanger and is then discharged through the first air inlet.
[0030] In one optional embodiment, the energy storage cabinet further includes at least one air intake grille, and the second air vent is an air inlet, with at least one air intake grille provided at the second air vent; or, the first air vent on each side panel is an air inlet, with at least one air intake grille provided at each first air vent.
[0031] The air intake grille is located at the air inlet (as the first or second air inlet), which can filter the air entering the heat dissipation chamber and block impurities and large particles outside the cabinet. Especially in the harsh environment where the energy storage cabinet is located, it reduces the possibility of impurities outside the cabinet entering the cabinet and affecting the normal operation of the cooling unit.
[0032] In one alternative embodiment, a portion of the heat exchanger has two heat exchange channels for mutual heat exchange, one of which is connected to multiple cooling channels of the lower battery cluster, and the other of which is connected to another portion of the heat exchanger. A drive pump is used to drive the cooling medium to flow in the multiple cooling channels and the heat exchanger with the heat exchange channels.
[0033] Driven by the pump, the cooling medium enters the battery's cooling channel to exchange heat with the battery. After the cooling medium takes away the heat from the battery, it enters one heat exchange channel of a heat exchanger and exchanges heat with the refrigerant in another heat exchange channel. After the cooling medium cools down in the corresponding heat exchanger, it flows back into the battery's cooling channel to continuously cool the battery cluster, thus achieving temperature control of the energy storage cabinet.
[0034] In one optional embodiment, the plurality of heat exchangers includes a first heat exchanger and a plurality of second heat exchangers. The first heat exchanger has two heat exchange channels, one of which communicates with a plurality of cooling channels, and the other of which communicates with a plurality of second heat exchangers. At least one second heat exchanger is disposed between each side plate and the drive pump, and a second air outlet faces the plurality of second heat exchangers. The first heat exchanger and the drive pump are arranged along the width direction of the cabinet, or the first heat exchanger is located between one of the second heat exchangers and the drive pump.
[0035] Driven by the pump, the cooling medium enters the battery's cooling channels to exchange heat with the battery cells. After carrying away the battery's heat, the cooling medium enters one heat exchange channel of the first heat exchanger and exchanges heat with the refrigerant in another heat exchange channel. After absorbing heat from the cooling medium, the refrigerant flows into multiple second heat exchangers to exchange heat with the air, and then flows back to the first heat exchanger to cool the cooling medium. Furthermore, after cooling in the first heat exchanger, the cooling medium flows back into the battery's cooling channels to cool the battery cluster.
[0036] The second air vent and the first air vent on each side plate are used for ventilation. Multiple second heat exchangers are distributed on both sides of the drive pump, which can make full use of the air on both sides of the drive pump. The air on both sides of the drive pump will pass through multiple second heat exchangers to cool the refrigerant in the second heat exchangers. The cooled refrigerant in the second heat exchangers will flow to the first heat exchanger to exchange heat with the cooling medium, thereby achieving the cooling of the cooling medium.
[0037] In one optional embodiment, the plurality of heat exchangers includes a first heat exchanger and a second heat exchanger. The first heat exchanger has two heat exchange channels, one of which is connected to a plurality of cooling channels, and the other of which is connected to the second heat exchanger. The first heat exchanger is disposed between one side plate and the drive pump, and the second heat exchanger is disposed between the other side plate and the drive pump. A portion of the second air outlet faces the first heat exchanger, and another portion of the second air outlet faces the second heat exchanger.
[0038] By positioning the first and second heat exchangers on different sides of the drive pump, the airflow from both sides of the drive pump can be fully utilized. The airflow between the second air outlet and one of the first air outlets will pass through the first heat exchanger, and the airflow between the second air outlet and the other first air outlet will pass through the second heat exchanger. The airflow passing through the first heat exchanger can accelerate the heat dissipation of the cooling medium (the cooling medium exchanges heat with both the refrigerant and the air), and the airflow passing through the second heat exchanger can cool the refrigerant inside the second heat exchanger.
[0039] In one alternative implementation, each heat exchanger is connected to multiple cooling channels of the underlying battery cluster, and a drive pump is used to drive the cooling medium to flow through the multiple heat exchangers and multiple cooling channels.
[0040] Driven by the pump, the cooling medium enters the cooling channel to exchange heat with the battery. After the cooling medium takes away the heat from the battery cluster, it enters multiple heat exchangers to exchange heat with the air. After the cooling medium is cooled down in the multiple heat exchangers, it flows back into the cooling channel to continue cooling the battery cluster, thereby achieving temperature control of the energy storage cabinet. Attached Figure Description
[0041] Figure 1 This is a schematic diagram of the structure of an energy storage cabinet provided in an embodiment of this application;
[0042] Figure 2 This is a schematic diagram of a battery cluster structure provided in an embodiment of this application;
[0043] Figure 3 This is a schematic diagram of the structure of various cooling units under a cooling method provided in an embodiment of this application;
[0044] Figure 4 This is a schematic diagram of the structure of various cooling units under another cooling method provided in the embodiments of this application;
[0045] Figure 5 This is a schematic diagram of the structure of a cabinet provided in an embodiment of this application;
[0046] Figure 6 This is a schematic diagram of the structure of the top of a cabinet provided in an embodiment of this application;
[0047] Figure 7 This is a schematic diagram of the internal structure of a heat dissipation cavity provided in an embodiment of this application;
[0048] Figure 8 This is a schematic diagram of the internal structure of another heat dissipation cavity provided in an embodiment of this application;
[0049] Figure 9 This is a schematic diagram of the internal structure of another heat dissipation cavity provided in an embodiment of this application;
[0050] Figure 10 This is a schematic diagram of the internal structure of another heat dissipation cavity provided in an embodiment of this application;
[0051] Figure 11 This is a schematic diagram of the structure of a heat exchanger provided in an embodiment of this application;
[0052] Figure 12 A schematic diagram of a plate-shaped heat exchanger provided in an embodiment of this application;
[0053] Figure 13 This is a schematic diagram of another heat exchanger provided in an embodiment of this application;
[0054] Figure 14 A schematic diagram of another plate-shaped heat exchanger provided in an embodiment of this application;
[0055] Figure 15 This application provides a schematic diagram of the structure of a fan from one perspective, representing an embodiment of the present application.
[0056] Figure 16 This is a schematic diagram of the structure of a fan from another perspective, provided as an embodiment of this application;
[0057] Figure 17This is a schematic diagram of the structure of another fan provided in an embodiment of this application from one view.
[0058] Figure 18 This is a schematic diagram of the structure of another fan provided in an embodiment of this application from another perspective;
[0059] Figure 19 This is a schematic diagram of the structure of an air intake grille provided in an embodiment of this application;
[0060] Figure 20 This is a schematic diagram of another air intake grille provided in an embodiment of this application;
[0061] Figure 21 This is a schematic diagram of another cabinet structure provided in an embodiment of this application;
[0062] Figure 22 This is a schematic diagram of another cabinet top structure provided in an embodiment of this application;
[0063] Figure 23 This is a schematic diagram of another cabinet structure provided in an embodiment of this application;
[0064] Figure 24 This is a schematic diagram illustrating the arrangement of multiple battery clusters and multiple cooling units provided in an embodiment of this application.
[0065] Figure label:
[0066] 1-Energy storage cabinet; 11-Cabinet body; 111-Energy storage cavity; 112-Heat dissipation cavity; 1121-Bottom surface; 113-Side panel; 114-First air vent; 115-Second air vent; 116-End plate; 117-Third air vent; 12-Battery cluster; 121-Battery; 1211-Outer shell; 1212-Battery cell; 1213-Cold plate; 1214-Cooling channel; 13-Cooling unit; 131-Drive pump; 132-Heat exchanger; 1321-First side; 1322-Second side; 1323-Ventilation surface; 133-First heat exchanger; 1331-Heat exchange channel; 134-Second heat exchanger; 135-Compressor; 136-Throttle valve; 14-Inlet pipe; 15-Outlet pipe; 16-Fan; 17-Air inlet grille; 2-Power conversion device. Detailed Implementation
[0067] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0068] In this application, the terms "first," "second," etc., are used for descriptive purposes only to distinguish one element from another, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.
[0069] In this application, unless otherwise expressly stated and limited, "multiple" means two or more.
[0070] Furthermore, in this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0071] In the accompanying drawings of the embodiments of this application, solid structures such as components and assemblies are represented by guide lines; structures composed of multiple components are represented by guide lines with parentheses or solid arrows; and hollow structures such as openings, holes, spaces, and cavities are represented by guide lines with hollow arrows.
[0072] This application provides an energy storage cabinet 1. Figure 1 An exemplary structure of energy storage cabinet 1 is shown, wherein energy storage cabinet 1 and power conversion device 2 are electrically connected, for example, via power cables. Power conversion device 2 is used to convert the voltage output from energy storage cabinet 1. In some examples, power conversion device 2 may be a power conversion system (PCS) and includes a DC / AC bidirectional converter, control unit, etc. Such power conversion device 2 can control the charging and discharging of energy storage cabinet 1, and perform AC and DC conversion, etc. In other examples, power conversion device 2 may also be a transformer for step-up or step-down voltage conversion.
[0073] exist Figure 1 In the illustrated embodiment, the energy storage cabinet 1 and the power conversion device 2 are two separate devices, with the power conversion device 2 located outside the energy storage cabinet 1. In some other examples, the energy storage cabinet 1 includes the power conversion device 2, and the power conversion device 2 is located inside the energy storage cabinet 1.
[0074] Continue to refer to Figure 1The energy storage cabinet 1 includes a cabinet body 11, which can be any suitable cabinet structure, such as a metal cabinet, a container, etc. The cabinet body 11 includes a separated energy storage cavity 111 and a heat dissipation cavity 112, with the heat dissipation cavity 112 located above the energy storage cavity 111. Furthermore, the energy storage cabinet 1 also includes battery clusters 12 and a cooling unit 13. The battery clusters 12 are located within the energy storage cavity 111, and the cooling unit 13 is located within the heat dissipation cavity 112, and is positioned above the battery clusters 12.
[0075] Figure 2 An exemplary structure of a battery cluster 12 is shown, with reference to Figure 1 and Figure 2 The battery cluster 12 includes a plurality of batteries 121 arranged along the height direction of the cabinet 11, wherein the height direction of the cabinet 11 is the Z-axis direction, that is, the vertical direction of the cabinet 11 after it is placed in a designated position. In some embodiments, refer to Figure 2 Each battery 121 includes a casing 1211, a battery cell 1212, a cold plate 1213, and a cooling channel 1214. Both the cold plate 1213 and the battery cell 1212 are disposed within the casing 1211. The cooling channel 1214 may be formed within the cold plate 1213, and a cooling medium (e.g., water-based, oil-based, etc.) flows through the cooling channel 1214 to cool the battery cell 1212. In some other embodiments, the battery 121 does not have a clearly defined cold plate 1213 structure, and the cooling channel 1214 may also be formed within the casing 1211, allowing the casing 1211 with the cooling channel 1214 to cool and dissipate heat from the battery cell 1212.
[0076] Reference Figure 2 The cooling channels 1214 of multiple batteries 121 in the battery cluster 12 are interconnected. For example, the energy storage cabinet 1 also includes an inlet pipe 14 and an outlet pipe 15. The inlet of the cooling channel 1214 of each battery 121 is connected to the inlet pipe 14, and the outlet of the cooling channel 1214 of each battery 121 is connected to the outlet pipe 15. The cooling medium can flow from the inlet pipe 14 into the cooling channel 1214 of each battery 121, and then flow out from the cooling channel 1214 of each battery 121 to the outlet pipe 15.
[0077] The cooling unit 13 enables the energy storage cabinet 1 to dissipate heat from the multiple batteries 121 in the battery cluster 12 using liquid cooling. This application provides various embodiments regarding the structure of the cooling unit 13, for example... Figure 3 An exemplary diagram illustrates the structure of various cooling units 13 under one cooling method; for example, Figure 4 An exemplary diagram illustrates the structure of various cooling units 13 under another cooling method. Among them, Figure 3 and Figure 4 There are two cooling methods. Figure 3 The cooling medium in the middle needs to exchange heat with the refrigerant. Figure 4 The cooling medium in the middle does not need to exchange heat with the refrigerant. Figure 4 The cooling medium exchanges heat with the air; for details, please refer to the following paragraphs. Figure 3 and Figure 4 The description.
[0078] Reference Figure 3 In (a), (b) and (c), the cooling unit 13 includes a drive pump 131 and a plurality of heat exchangers 132. A portion of the heat exchangers 132 has two heat exchange channels 1331 for mutual heat exchange. One of the heat exchange channels 1331 is connected to a plurality of cooling channels 1214 of the battery cluster 12, and the other heat exchange channel 1331 is connected to another portion of the heat exchangers 132. The drive pump 131 is used to drive the cooling medium to flow in the cooling channels 1214 and the heat exchangers 132 with the heat exchange channels 1331. Driven by the pump 131, the cooling medium enters the cooling channel 1214 of the battery 121 to exchange heat with the battery 121. After the cooling medium takes away the heat from the battery 121, it enters one heat exchange channel 1331 of the heat exchanger 132 and exchanges heat with the refrigerant in the other heat exchange channel 1331. After the cooling medium is cooled down in the corresponding heat exchanger 132, it flows back into the cooling channel 1214 of the battery 121 to continuously cool the battery cluster 12, thereby achieving temperature control of the energy storage cabinet 1.
[0079] In one embodiment, reference is made to... Figure 3 In (a), the multiple heat exchangers 132 include a first heat exchanger 133 and a second heat exchanger 134. The first heat exchanger 133 has two heat exchange channels 1331. One heat exchange channel 1331 of the first heat exchanger 133 is connected to the drive pump 131, and the other heat exchange channel 1331 of the first heat exchanger 133 is connected to the multiple second heat exchangers 134. Driven by the drive pump 131, the cooling medium enters the cooling channel 1214 of the battery 121 to exchange heat with the battery 121. After the cooling medium takes away the heat of the battery 121, it enters one heat exchange channel 1331 of the first heat exchanger 133 to exchange heat with the refrigerant in the other heat exchange channel 1331. The refrigerant cools the cooling medium. After the cooling medium is cooled in the first heat exchanger 133, it flows back to the cooling channel 1214 of the battery 121 to cool the battery cluster 12.
[0080] In this process, after absorbing heat from the cooling medium, the refrigerant exchanges heat with the air in the second heat exchanger 134 to cool it down. For example, continuing to refer to... Figure 3In (a), the cooling unit 13 also includes a compressor 135 and a throttle valve 136. The compressor 135 is connected to the inlet of the second heat exchanger 134, and the throttle valve 136 is connected to the outlet of the second heat exchanger 134. After absorbing heat from the cooling medium in the first heat exchanger 133, the liquid refrigerant vaporizes into low-temperature, low-pressure vapor (gaseous refrigerant), which is then drawn into the compressor 135. The compressor 135 compresses the gaseous refrigerant into high-pressure, high-temperature vapor and discharges it into the second heat exchanger 134. After exchanging heat with the air in the second heat exchanger 134, the refrigerant condenses into high-pressure liquid refrigerant. Then, after being throttled by the throttle valve 136, it becomes low-pressure, low-temperature liquid refrigerant and re-enters the first heat exchanger 133 to absorb heat from the cooling medium and vaporize, thus achieving the purpose of cyclic refrigeration.
[0081] In another embodiment, refer to Figure 3 In (b), the plurality of heat exchangers 132 include a first heat exchanger 133 and a plurality of second heat exchangers 134, and Figure 3 Compared to (a) in the middle, Figure 3 (b) has more second heat exchangers 134, and the multiple second heat exchangers 134 are connected in series. For example, the inlet of the first second heat exchanger 134 is connected to the compressor 135, the outlet of the first second heat exchanger 134 is connected to the inlet of the second second heat exchanger 134, and the outlet of the second second heat exchanger 134 is connected to the throttle valve 136. Furthermore, refer to... Figure 3 (c) in the diagram also shows the case of multiple second heat exchangers 134, and... Figure 3 Compared to (b) in the middle, in Figure 3 In the case shown in (c), multiple second heat exchangers 134 are connected in parallel, that is, the inlet of each second heat exchanger 134 is connected to the compressor 135, and the outlet of each second heat exchanger 134 is connected to the throttle valve 136.
[0082] In some other embodiments, Figure 3 In the cooling method shown, multiple first heat exchangers 133 can also be provided, and multiple first heat exchangers 133 can be connected in series or in parallel.
[0083] Reference Figure 4In (a) and (b) of the diagram, the cooling unit 13 includes a drive pump 131 and multiple heat exchangers 132. Each heat exchanger 132 is connected to multiple cooling channels 1214 of the battery cluster 12 below. The drive pump 131 is used to drive the cooling medium to flow within the multiple heat exchangers 132 and the multiple cooling channels 1214 in the battery cluster 12. That is, driven by the drive pump 131, the cooling medium enters the cooling channels 1214 to exchange heat with the battery 121. After the cooling medium carries away the heat from the battery cluster 12, it enters the multiple heat exchangers 132 to exchange heat with the air. After the cooling medium is cooled down in the multiple heat exchangers 132, it flows back into the cooling channels 1214 to continuously cool the battery cluster 12, thereby achieving temperature control of the energy storage cabinet 1.
[0084] In one embodiment, reference is made to... Figure 4 In (a) of the diagram, multiple heat exchangers 132 are connected in series. For example, the inlet of the first heat exchanger 132 is connected to the outlet of the drive pump 131, the outlet of the first heat exchanger 132 is connected to the inlet of the second heat exchanger 132, and the outlet of the second heat exchanger 132 is connected to multiple cooling channels in the battery cluster 12. In another embodiment, refer to... Figure 4 In (b), multiple first heat exchangers 133 are connected in parallel. For example, the inlet of each heat exchanger 132 is connected to the outlet of the drive pump 131, and the outlet of each heat exchanger 132 is connected to multiple cooling channels 1214 in the battery cluster 12.
[0085] It should be noted that the heat exchanger 132 can be any suitable structure. For example, the heat exchanger 132 may include a pipe for the flow of the medium and multiple fins fixed to the pipe.
[0086] The cooling unit 13 is installed inside the heat dissipation cavity 112 of the cabinet 11. Figure 5 An exemplary structure of cabinet 11 is shown. Figure 6 An exemplary diagram shows the structure of the top of the energy storage cabinet 1 (with an internal heat dissipation cavity 112).
[0087] Reference Figure 5 and Figure 6 The cabinet 11 includes two side panels 113 arranged along its thickness direction (Y-axis direction). The thickness direction (Y-axis direction), width direction (X-axis direction), and height direction (Z-axis direction) of the cabinet 11 are mutually perpendicular. The width direction and thickness direction of the cabinet 11 are two mutually perpendicular horizontal directions. For example, if the energy storage cabinet 1 has a door, the door and the back panel of the energy storage cabinet 1 are arranged in the thickness direction of the cabinet 11.
[0088] Reference Figure 5 and Figure 6Each side panel 113 has a first air vent 114 communicating with the heat dissipation cavity 112. In some embodiments, each first air vent 114 may be a complete opening; in other embodiments, each first air vent 114 may also include multiple through holes. Furthermore, the cabinet 11 also includes a top panel, which has a second air vent 115 communicating with the heat dissipation cavity 112. In some embodiments, the second air vent 115 may be a complete opening; in other embodiments, the second air vent 115 may also include multiple through holes.
[0089] Continue to refer to Figure 5 and Figure 6 A first air vent 114 is provided on each of the two side panels 113 of the cabinet 11, and a second air vent 115 is provided on the top panel of the cabinet 11. Each first air vent 114 and the second air vent 115 are used for ventilation. For example, when the first air vent 114 is an air inlet and the second air vent 115 is an air outlet, the air entering the heat dissipation cavity 112 from the first air vents 114 on both sides will be discharged through the second air vent 115; as another example, when the second air vent 115 is an air inlet and the first air vent 114 is an air outlet, the air entering the heat dissipation cavity 112 from the second air vent 115 will be discharged through the first air vents 114 on both sides.
[0090] Reference Figure 6 (Structural auxiliary reference for cooling unit 13) Figure 3 and Figure 4 The drive pump 131 is located between the two side plates 113, and at least one heat exchanger 132 is provided between each side plate 113 and the drive pump 131. That is, at least one heat exchanger 132 is provided in each of the A1 and A2 regions. Based on the fact that each side plate 113 is provided with a first air vent 114, the air outside the cabinet 11 can enter the heat dissipation cavity 112 through the first air vent 114 on the two side plates 113 and then be discharged from the second air vent 115. The air outside the cabinet 11 can also enter the heat dissipation cavity 112 through the second air vent 115 and then be discharged from the first air vent 114 on the two side plates 113. A heat exchanger 132 (which is an external heat exchanger used to exchange heat with the air outside the cabinet 11) is provided between the drive pump 131 and each side plate 113. After the air enters the heat dissipation cavity 112, it will pass through the heat exchanger 132 (external heat exchanger) between the side plate 113 and the drive pump 131 to realize the external heat exchange of the cooling unit 13.
[0091] Under the same air intake or exhaust volume, compared with the case where only one air vent is set on a cabinet panel in the related technology, the first air vent 114 is set on both side panels 113 of the cabinet 11. This can make the area occupied by the first air vent 114 on each side panel 113 smaller. In this way, while ensuring that the air intake or exhaust volume is large enough, that is, to ensure effective heat dissipation of the battery cluster 12, the first air vent 114 can be shorter in the height direction of the cabinet 11. More space is available inside the cabinet 11 for the battery cluster 12 to be placed, thereby increasing the effective energy storage of the energy storage cabinet 1.
[0092] To facilitate gas flow, in the thickness direction (Y-axis direction) of the cabinet 11, a portion of the second air vent 115 is located between one side plate 113 and the drive pump 131, and another portion of the second air vent 115 is located between the other side plate 113 and the drive pump 131. For example, refer to... Figure 6 The second air vent 115 can cover areas A1 and A2, but it does not cover the area where the drive pump 131 is located. That is, the second air vent 115 consists of two parts, which are spaced a certain distance apart. One part of the second air vent 115 covers area A1, and the other part covers area A2. For example, the second air vent 115 can cover the area where the drive pump 131 is located, area A1, and area A2. Figure 5 This situation is illustrated.
[0093] There are several ways to arrange the cooling unit 13 within the heat dissipation cavity 112, for example, Figure 7 An exemplary internal structure of a heat dissipation cavity 112 is shown, with reference to... Figure 7 Cooling unit 13 uses Figure 3 The scheme shown in (a) includes a drive pump 131 located between two side plates 113, with at least one heat exchanger 132 disposed between each side plate 113 and the drive pump 131, so as to... Figure 7 Taking a heat exchanger 132 disposed between each side plate 113 and the drive pump 131 as an example, one heat exchanger 132 has two heat exchange channels 1331, and the other heat exchanger 132 has a channel for refrigerant flow inside. That is, in the case of multiple heat exchangers 132 including a first heat exchanger 133 and a second heat exchanger 134, Figure 7One heat exchanger 132 is designated as the first heat exchanger 133, and the other heat exchanger 132 is designated as the second heat exchanger 134. The first heat exchanger 133 is disposed between one side plate 113 and the drive pump 131, and the second heat exchanger 134 is disposed between the other side plate 113 and the drive pump 131. The drive pump 131 is located between the first heat exchanger 133 and the second heat exchanger 134. Furthermore, the area between the first heat exchanger 133 and the second heat exchanger 134 may also house other devices such as a compressor 135 and a throttle valve 136. Additionally, auxiliary references... Figure 5 and Figure 6 A portion of the second air vent 115 faces the first heat exchanger 133, for example, the first heat exchanger 133 is located in region A1; another portion of the second air vent 115 faces the second heat exchanger 134, for example, the second heat exchanger 134 is located in region A2.
[0094] By positioning the first heat exchanger 133 and the second heat exchanger 134 on different sides of the drive pump 131 in the thickness direction of the cabinet 11, the airflow on both sides of the drive pump 131 can be fully utilized. The airflow between the second air outlet 115 and one of the first air outlets 114 will pass through the first heat exchanger 133, and the airflow between the second air outlet 115 and the other first air outlet 114 will pass through the second heat exchanger 134. The airflow passing through the first heat exchanger 133 can accelerate the heat dissipation of the cooling medium, and the airflow passing through the second heat exchanger 134 can cool the refrigerant in the second heat exchanger 134.
[0095] Figure 8 An exemplary internal structure of another heat dissipation cavity 112 is shown, with reference to Figure 8 Cooling unit 13 uses Figure 3 The scheme shown in (b) has a drive pump 131 located between two side plates 113, with a second heat exchanger 134 disposed between each side plate 113 and the drive pump 131. Other devices such as a first heat exchanger 133, a compressor 135, and a throttle valve 136 may also be disposed in the area between the two second heat exchangers 134. Figure 8 In the illustrated embodiment, the first heat exchanger 133 and the drive pump 131 are arranged along the width direction (X-axis direction) of the cabinet 11. In some other embodiments, for example, Figure 9 An exemplary internal structure of another heat dissipation cavity 112 is shown, with reference to Figure 9 The first heat exchanger 133 is located between one of the second heat exchangers 134 and the drive pump 131. (Auxiliary reference) Figure 5 and Figure 6 The second air vent 115 faces multiple second heat exchangers 134, for example, one second heat exchanger 134 is located in region A1 and another second heat exchanger 134 is located in region A2.
[0096] By distributing multiple second heat exchangers 134 on both sides of the drive pump 131 through the above design, the airflow on both sides of the drive pump 131 can be fully utilized. The airflow on both sides of the drive pump 131 will pass through multiple second heat exchangers 134 to cool the refrigerant in the second heat exchangers 134. The cooled refrigerant in the second heat exchangers 134 will flow to the first heat exchanger 133 to exchange heat with the cooling medium, thereby achieving the cooling of the cooling medium.
[0097] exist Figure 8 and Figure 9 In the illustrated embodiment, a portion of the second air vent 115 may also face the first heat exchanger 133; this application does not impose specific limitations on this.
[0098] also, Figure 10 An exemplary internal structure of another heat dissipation cavity 112 is shown, with reference to Figure 10 Cooling unit 13 uses Figure 4 The schemes shown in (a) and (b) involve a drive pump 131 located between two side plates 113, with at least one heat exchanger 132 disposed between each side plate 113 and the drive pump 131, so as to... Figure 10 Taking a heat exchanger 132 provided between each side plate 113 and the drive pump 131 as an example, the drive pump 131 is located between two heat exchangers 132. Furthermore, other devices such as a compressor 135 and a throttle valve 136 can also be installed in the area between the two heat exchangers 132. Additionally, auxiliary references... Figure 5 and Figure 6 The second air vent 115 is partially directed toward one of the heat exchangers 132, for example, the heat exchanger 132 is located in region A1; the second air vent 115 is also partially directed toward another heat exchanger 132, for example, the heat exchanger 132 is located in region A2.
[0099] The above examples illustrate various layouts of the cooling unit 13 within the heat dissipation chamber 112, but are not exhaustive. For instance, by simply placing the heat exchangers 132, which exchange heat with the external air of the cabinet 11, on both sides of the drive pump 131, the airflow on both sides of the drive pump 131 can be fully utilized, thereby improving the cooling effect of the cooling unit 13 on the battery cluster 12.
[0100] The heat exchangers 132 located on both sides of the drive pump 131 can be arranged in any suitable manner within the heat dissipation cavity 112, and the optimal heat exchange effect can be achieved by adjusting the position of the heat exchangers 132. For example, Figure 11 An exemplary structure of a heat exchanger 132 is shown, with reference to Figure 11At least one heat exchanger 132 is inclined, and the inclined heat exchanger 132 has a first side 1321 and a second side 1322 arranged along the thickness direction (Y-axis direction) of the cabinet 11. The first side 1321 faces one of the side plates 113 (that is, faces the first air outlet 114 on one side), and the second side 1322 faces the drive pump 131. The first side 1321 is higher than the second side 1322, that is, the dashed line L1 ( Figure 11 The height of the first edge (1321) is higher than the dashed line L2. Figure 11 The height of the second side 1322). Among them, the first side 1321 of the inclined heat exchanger 132 is higher, so that the air flowing between the first air outlet 114 and the second air outlet 115 can better exchange heat with the inclined heat exchanger 132.
[0101] For example, when the first air vent 114 is an air inlet and the second air vent 115 is an air outlet, the air entering the heat dissipation chamber 112 from the first air vent 114 passes more through the inclined heat exchanger 132 before exiting through the second air vent 115, reducing the possibility that the air entering from the first air vent 114 will exit through the second air vent 115 without passing through the heat exchanger 132. Similarly, when the second air vent 115 is an air inlet and the first air vent 114 is an air outlet, the air entering the heat dissipation chamber 112 from the second air vent 115 passes more through the inclined heat exchanger 132 before exiting through the first air vent 114, reducing the possibility that the air entering from the second air vent 115 will exit through the first air vent 114 without passing through the heat exchanger 132. Through the above design, the cooling capacity of the cooling unit 13 for the battery cluster 12 can be improved.
[0102] In some embodiments, the first edge 1321 is also higher than the top of the first air vent 114 on the side panel 113 facing it, that is, the dashed line L1 is also higher than the dashed line L3. Figure 11 (The height of the top of the first air vent 114). This allows most of the air in the heat dissipation cavity 112 to pass through the heat exchanger 132 and exchange heat with it. For example, most of the air entering the heat dissipation cavity 112 from the first air vent 114 can pass through the heat exchanger 132 and then be discharged through the second air vent 115; similarly, most of the air entering the heat dissipation cavity 112 from the second air vent 115 can also pass through the heat exchanger 132 and then be discharged through the first air vent 114. This improves the cooling efficiency of the medium (cooling medium or refrigerant) inside the heat exchanger 132, resulting in better cooling of the battery cluster 12 by the cooling unit 13.
[0103] In some embodiments, at least one heat exchanger 132 located between the drive pump 131 and the side plate 113 is plate-shaped. Figure 12An exemplary plate-shaped heat exchanger 132 is shown, wherein the length and width of the plate-shaped heat exchanger 132 are both greater than its thickness, that is, the plate-shaped heat exchanger 132 is larger in its thickness direction ( Figure 12 The smallest dimension is along the direction indicated by the double-arrow dashed line passing through the heat exchanger 132. The plate-shaped heat exchanger 132 has two ventilation surfaces 1323 perpendicular to its own thickness direction, and ventilation is provided between the two ventilation surfaces 1323. It should be noted that the ventilation surface 1323 includes multiple vents, which can be openings formed between the ends of two adjacent fins for air inlet or outlet.
[0104] In the case where the plate-shaped heat exchanger 132 is tilted, the angle between each ventilation surface 1323 and the bottom surface 1121 of the heat dissipation cavity 112 is an acute angle, that is, Figure 12 Both included angles α are between 0° and 90°. Furthermore, the plate-shaped heat exchanger 132 faces the edge of the side plate 113 (e.g., Figure 11 The first side 1321 in the middle is higher than the side facing the drive pump 131 (e.g., Figure 11 (Second side portion 1322). In some embodiments, in order to further improve the heat exchange capacity of the heat exchanger 132, the plate-shaped heat exchanger 132 is positioned above the edge of the side plate 113 facing the side plate 113, which also increases the top of the first air vent 114 on the side plate 113 facing the side plate. This reduces the possibility that the air entering the heat dissipation cavity 112 will be discharged without passing through the heat exchanger 132. This effect can also be seen in the above description of... Figure 11 The description of the related effects of the first side 1321 being higher than the top of the first air vent 114 on the side plate 113 it faces.
[0105] Furthermore, the heat exchanger 132 (external heat exchanger) used for heat exchange with the external air of the cabinet 11 may not be tilted, for example, Figure 13 An exemplary structure of another heat exchanger 132 is shown, with reference to Figure 13The first side portion 1321 faces one of the side panels 113 (that is, the first air vent 114 facing one side), and the second side portion 1322 faces the drive pump 131. The first side portion 1321 and the second side portion 1322 are at the same height, meaning the heat exchanger 132 is horizontally installed inside the heat dissipation cavity 112. Furthermore, in the height direction of the cabinet 11, the distance between the first side portion 1321 and the second air vent 115 is less than the distance between the first side portion 1321 and the battery cluster 12; that is, the distance between dashed lines L4 and L5 is less than the distance between dashed lines L4 and L6. Since the first side portion 1321 and the second side portion 1322 are at the same height, the distance between the second side portion 1322 and the second air vent 115 is also less than the distance between the second side portion 1322 and the battery cluster 12. In this way, the heat exchanger 132 is closer to the second air outlet 115, allowing more air to pass through the heat exchanger 132 and exchange heat with it between the first air outlet 114 and the second air outlet 115, thus improving the cooling capacity of the cooling unit 13 for the battery cluster 12. For example, most of the air entering the heat dissipation chamber 112 from the first air outlet 114 can pass through the heat exchanger 132 before being discharged through the second air outlet 115; similarly, most of the air entering the heat dissipation chamber 112 from the second air outlet 115 can also pass through the heat exchanger 132 before being discharged through the first air outlet 114.
[0106] To further improve the heat exchange efficiency of the heat exchanger 132, in some embodiments, the first side 1321 may also be higher than the top of the first air vent 114 on the side plate 113 it faces, that is, the dotted line L4 ( Figure 13 The height of the first edge (1321) is higher than the dashed line L7. Figure 13 The height of the top of the first air vent 114 is increased. The heat exchanger 132 is higher than the first air vent 114, allowing most of the air between the first air vent 114 and the second air vent 115 to pass through and exchange heat with the heat exchanger 132. For example, when the first air vent 114 is the air inlet and the second air vent 115 is the air outlet, this reduces the possibility that air entering through the first air vent 114 will exit through the second air vent 115 without passing through the heat exchanger 132; similarly, when the second air vent 115 is the air inlet and the first air vent 114 is the air outlet, this also reduces the possibility that air entering through the second air vent 115 will exit through the first air vent 114 without passing through the heat exchanger 132. By increasing the height of the heat exchanger 132, the efficiency of heat exchange between the heat exchanger 132 and the air is further improved.
[0107] In the case where the heat exchanger 132 is plate-shaped, Figure 14 An exemplary embodiment is shown of another plate-shaped heat exchanger 132, wherein both the length and width of the plate-shaped heat exchanger 132 are greater than its thickness, that is, the plate-shaped heat exchanger 132 is larger in its thickness direction ( Figure 14The dimension along the Z-axis is the smallest. If the plate-shaped heat exchanger 132 is not tilted, then each ventilation surface 1323 is parallel to the bottom surface 1121 of the heat dissipation cavity, that is, Figure 14 The three dashed lines in the image are parallel to each other.
[0108] Furthermore, when the plate-shaped heat exchanger 132 is not tilted, in order to allow more air to pass through the heat exchanger 132 within the heat dissipation cavity 112, refer to... Figure 13 and Figure 14 In the height direction (Z-axis direction) of the cabinet 11, the distance between the plate-shaped heat exchanger 132 and the second air vent 115 is less than the distance between the plate-shaped heat exchanger 132 and the battery cluster 12. That is, the distance between the ventilation surface 1323 of the heat exchanger 132 facing the second air vent 115 and the second air vent 115 is less than the distance between the ventilation surface 1323 of the heat exchanger 132 facing the bottom surface 1121 and the battery cluster 12. By bringing the heat exchanger 132 closer to the second air vent 115, more air passes through the heat exchanger 132 and exchanges heat with it, improving the cooling capacity of the cooling unit 13 for the battery cluster 12. In some embodiments, the ventilation surface 1323 of the plate-shaped heat exchanger 132 facing the bottom surface 1121 can also be higher than the top of the first air vent 114, reducing the possibility that air entering the heat dissipation cavity 112 will be discharged without passing through the heat exchanger 132.
[0109] In some embodiments, the heat exchange efficiency between the heat exchanger 132 and the air can be improved by accelerating the airflow. For example, the cooling unit 13 also includes a plurality of fans 16. Figure 15 An exemplary structure of a fan 16 is shown in a first-view perspective, with reference to... Figure 15 Multiple fans 16 are positioned at the second air vent 115, and the multiple fans 16 are closer to the second air vent 115 than the multiple heat exchangers 132. At least one fan 16 is disposed between each side plate 113 and the drive pump 131. Figure 15 In the illustrated embodiment, two fans 16 are arranged between each side plate 113 and the drive pump 131. In other embodiments, one fan 16 may also be arranged between each side plate 113 and the drive pump 131. Driven by multiple fans 16, the airflow can be accelerated, allowing the air entering the heat dissipation cavity 112 to exchange heat with the heat exchanger 132 and then be quickly discharged outside the cabinet 11, further improving the efficiency of heat exchange between the heat exchanger 132 and the air.
[0110] In cases where there are multiple fans 16 between each side plate 113 and the drive pump 131, the multiple fans 16 can be arranged in any suitable manner, for example... Figure 16 An example is shown Figure 15The structure of the fans 16 in the second perspective (top view) shows that two fans 16 are arranged between at least one side plate 113 and the drive pump 131. The arrangement direction of the two fans 16 forms an acute angle with the thickness direction of the cabinet 11. Specifically, the arrangement direction of the two fans 16 is parallel to the dashed line L8, and the thickness direction (Y-axis direction) of the cabinet 11 is parallel to the dashed line L9. The angle α between the dashed lines L8 and L9 is an acute angle. By arranging the two fans 16 between the side plate 113 and the drive pump 131 in this manner, the space between the side plate 113 and the drive pump 131 can be fully utilized, and the size of each fan 16 can be relatively large, which is beneficial for driving the airflow inside and outside the heat dissipation cavity 112.
[0111] Figure 17 An exemplary view shows another structure of the fan 16 from a first-view perspective, with reference to... Figure 17 At least one fan 16 is provided at the first air vent 114 on each side panel 113. Figure 17 In the illustrated embodiment, a plurality of fans 16 are provided at each first air vent 114, and the plurality of fans 16 are arranged along the width direction (X-axis direction) of the cabinet 11; in some other embodiments, a single fan 16 is provided at each first air vent 114. Figure 18 An example is shown Figure 17 The structure of fan 16 in the middle from a second-view (top view) is shown in the reference. Figure 18 The fan 16 is located inside the heat dissipation cavity 112, and each fan 16 is closer to the first air outlet 114 than the heat exchanger 132 on the same side (the heat exchanger 132 on the same side as the fan 16 is located on the same side as the drive pump 131).
[0112] In some embodiments, the air entering the heat exchanger 132 can be filtered; for example, the energy storage cabinet 1 also includes an air intake grille 17. Figure 19 An exemplary structure of an air intake grille 17 is shown, with the first air vent 114 serving as an air intake, referring to... Figure 19 Each side plate 113 has a first air vent 114 for supplying air into the heat dissipation chamber 112, and each first air vent 114 is provided with at least one air intake grille 17, wherein each air intake grille 17 is closer to the first air vent 114 than the heat exchanger 132 on the same side (the heat exchanger 132 located on the same side of the drive pump 131 as the aforementioned air intake grille 17).
[0113] Alternatively, if the second air inlet 115 is used as the air intake... Figure 20 An exemplary view shows another structure of the air intake grille 17, with reference to Figure 20The second air vent 115 is used to supply air into the heat dissipation chamber 112. At least one air intake grille 17 is provided at the second air vent 115, wherein the air intake grille 17 is closer to the second air vent 115 than the heat exchanger 132. By placing the air intake grille 17 at the air inlet (serving as the first air vent 114 or the second air vent 115), the air entering the heat dissipation chamber 112 can be filtered, and impurities and large particles outside the cabinet 11 can be blocked. Especially in the harsh environment where the energy storage cabinet 1 is located, this reduces the possibility of impurities outside the cabinet 11 entering the cabinet 11 and affecting the normal operation of the cooling unit 13.
[0114] In the case where the energy storage cabinet 1 includes both a fan 16 and an air intake grille 17, if both the air intake grille 17 and the fan 16 are located at the first air vent 114, then the air intake grille 17 is closer to the first air vent 114 than the fan 16. Similarly, if both the air intake grille 17 and the fan 16 are located at the second air vent 115, then the air intake grille 17 is closer to the second air vent 115 than the fan 16.
[0115] In some embodiments, the heat dissipation efficiency of the heat exchanger 132 can also be improved by increasing the air vents at the top of the cabinet 11. For example, Figure 21 Another cabinet 11 structure provided in this application embodiment is shown below. Figure 21 The cabinet 11 also includes two end plates 116 arranged along its width, and at least one end plate 116 has a third air vent 117 communicating with the heat dissipation cavity 112. Figure 22 An example is shown Figure 21 The structure of the top of the middle cabinet 11 is as follows: Figure 22 In the thickness direction (Y-axis direction) of the cabinet 11, a portion of the third air vent 117 on each end plate 116 is located between one side plate 113 and the drive pump 131, and another portion of the third air vent 117 is located between the other side plate 113 and the drive pump 131. For example, in Figure 22 In the illustrated embodiment, the third air vent 117 faces the area where the drive pump 131 is located, area A1, and area A2. In some other embodiments, the third air vent 117 does not face the area where the drive pump 131 is located; that is, the third air vent 117 includes two spaced portions, one facing area A1 and the other facing area A2.
[0116] By setting a third air vent 117, more cabinet panels on the cabinet 11 are equipped with air vents. On the one hand, more air from outside the cabinet 11 can enter the heat dissipation chamber 112, and the gas inside the heat dissipation chamber 112 can be discharged more quickly, further improving the heat exchange efficiency between the heat exchanger 132 and the air, and increasing the cooling capacity of the cooling unit 13 for the battery cluster 12. On the other hand, since multiple air vents can enter and exit simultaneously, the dimensions of the first air vent 114 and the third air vent 117 in the height direction of the cabinet 11 can be shorter, providing more space inside the cabinet 11 for the battery cluster 12, further increasing the effective energy storage capacity of the energy storage cabinet 1.
[0117] In addition, in some embodiments, the energy storage cabinet 1 may also include multiple battery clusters 12 and multiple cooling units 13. Figure 23 An exemplary embodiment shows the structure of another cabinet 11, which houses multiple battery clusters 12 and multiple cooling units 13, wherein... Figure 24 An exemplary arrangement of multiple battery clusters 12 and multiple cooling units 13 is shown. (Refer to...) Figure 24 Multiple battery clusters 12 are located in the energy storage cavity 111 and arranged along the width direction (X-axis direction) of the cabinet 11. Multiple cooling units 13 are located in the heat dissipation cavity 112 and are also arranged along the width direction (X-axis direction) of the cabinet 11. Each battery cluster 12 includes multiple batteries 121 arranged along the height direction (Z-axis direction) of the cabinet 11. Each cooling unit 13 is located above a corresponding battery cluster 12.
[0118] In each cooling unit 13, the drive pump 131 is located between two side plates 113, and at least one heat exchanger 132 is provided between each side plate 113 and the drive pump 131. For details, please refer to the aforementioned embodiments, which will not be repeated here.
[0119] In some embodiments, each cooling unit 13 operates independently and independently cools and lowers the temperature of the corresponding battery cluster 12 below it. In other embodiments, multiple cooling units 13 can be connected in parallel to achieve mutual assistance or complementarity, so that if one cooling unit 13 fails, the other cooling units 13 can continue to operate, enabling each battery cluster 12 to effectively dissipate heat.
[0120] Return to reference Figure 23 The cabinet 11 has a first air vent 114 on each of its two side panels 113 and a second air vent 115 on its top. In some embodiments, at least one end panel 116 of the cabinet 11 may also have a third air vent 117.
[0121] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An energy storage cabinet, characterized by, include: The cabinet includes a separate energy storage cavity and a heat dissipation cavity, with the heat dissipation cavity located above the energy storage cavity; At least one battery cluster is located within the energy storage cavity, each battery cluster comprising a plurality of batteries arranged along the height direction of the cabinet, and each battery comprising a cooling channel for supplying cooling medium. At least one cooling unit is located within the heat dissipation cavity and is used to cool the cooling medium. Each cooling unit is located above a corresponding battery cluster. Each cooling unit includes a drive pump and multiple heat exchangers. The drive pump is used to drive the cooling medium to flow. The cabinet includes two side panels arranged along its own thickness direction, the drive pump is located between the two side panels, at least one heat exchanger is provided between each side panel and the drive pump, each side panel has a first air vent communicating with the heat dissipation cavity, the top of the cabinet has a second air vent communicating with the heat dissipation cavity, and ventilation is provided between each first air vent and the second air vent.
2. The energy storage cabinet of claim 1, wherein, At least one heat exchanger located between the drive pump and the side plate is plate-shaped. The length and width of the plate-shaped heat exchanger are both greater than its thickness. The plate-shaped heat exchanger has two ventilation surfaces perpendicular to its thickness direction. One ventilation surface faces the second air outlet, and the other ventilation surface faces the bottom surface of the heat dissipation cavity. Ventilation is provided between the two ventilation surfaces. The angle between each ventilation surface and the bottom surface is an acute angle. The edge of the plate-shaped heat exchanger facing the side plate is higher than the edge facing the drive pump.
3. The energy storage cabinet of claim 2, wherein, The plate-shaped heat exchanger faces the edge of the side plate and is also higher than the top of the first air vent on the side plate it faces.
4. The energy storage cabinet of claim 1, wherein, At least one heat exchanger located between the drive pump and the side plate is plate-shaped. The length and width of the plate-shaped heat exchanger are both greater than its thickness. The plate-shaped heat exchanger has two ventilation surfaces perpendicular to its own thickness direction. One ventilation surface faces the second air outlet, and the other ventilation surface faces the bottom surface of the heat dissipation cavity. Ventilation is provided between the two ventilation surfaces. Each ventilation surface is parallel to the bottom surface of the heat dissipation cavity. In the height direction of the cabinet, the distance between the plate-shaped heat exchanger and the second air outlet is less than the distance between the plate-shaped heat exchanger and the battery cluster.
5. The energy storage cabinet of claim 4, wherein, The plate-shaped heat exchanger has its ventilation surface facing the bottom surface higher than the top of the first air vent.
6. The energy storage cabinet of any one of claims 1-5, wherein, In the thickness direction of the cabinet, a portion of the second air vent is located between one of the side panels and the drive pump, and another portion of the second air vent is located between the other side panel and the drive pump.
7. The energy storage cabinet of any one of claims 1-6, wherein, The cabinet also includes two end plates arranged along its width, and at least one of the end plates has a third air vent communicating with the heat dissipation cavity.
8. The energy storage cabinet of claim 7, wherein, In the thickness direction of the cabinet, a portion of the third air vent is located between one of the side panels and the drive pump, and another portion of the third air vent is located between the other side panel and the drive pump.
9. The energy storage cabinet of any one of claims 1-8, wherein, Each cooling unit also includes a plurality of fans, which are disposed at the second air outlet, and at least one of the fans is disposed between each side plate and the drive pump; Alternatively, at least one of the fans may be provided at the first air vent on each of the side panels.
10. The energy storage cabinet of claim 9, wherein, The plurality of fans are disposed at the second air outlet, and at least two of the plurality of fans are disposed between at least one of the side plates and the drive pump, wherein the arrangement direction of the two fans forms an acute angle with the thickness direction of the cabinet.
11. The energy storage cabinet of any one of claims 1-10, wherein, Each of the first air vents is an air inlet and the second air vent is an air outlet; or, the second air vent is an air inlet and each of the first air vents is an air outlet.
12. The energy storage cabinet of claim 11, wherein, The energy storage cabinet further includes at least one air intake grille, and the second air vent is an air inlet, with the at least one air intake grille disposed at the second air vent; or... The first air vent on each of the side panels is an air inlet, and at least one air intake grille is provided at each of the first air vents.
13. The energy storage cabinet of any one of claims 1-12, wherein, One portion of the heat exchanger has two heat exchange channels for mutual heat exchange, one of the two heat exchange channels is connected to a plurality of cooling channels of the battery cluster below, and the other of the two heat exchange channels is connected to another portion of the heat exchanger. The drive pump is used to drive the cooling medium to flow in the plurality of cooling channels and the heat exchanger having the heat exchange channels.
14. The energy storage cabinet of claim 13, wherein, The plurality of heat exchangers includes a first heat exchanger and a plurality of second heat exchangers. The first heat exchanger has two heat exchange channels, one of which is connected to the plurality of cooling channels, and the other of which is connected to the plurality of second heat exchangers. At least one second heat exchanger is provided between each of the side plates and the drive pump, and the second air outlet faces the plurality of second heat exchangers; The first heat exchanger and the drive pump are arranged along the width of the cabinet, or the first heat exchanger is located between one of the second heat exchangers and the drive pump.
15. The energy storage cabinet of claim 13, wherein, The plurality of heat exchangers includes a first heat exchanger and a second heat exchanger. The first heat exchanger has two heat exchange channels, one of which is connected to the plurality of cooling channels, and the other of which is connected to the second heat exchanger. One of the side plates is provided with a first heat exchanger between itself and the drive pump, and the other side plate is provided with a second heat exchanger between itself and the drive pump. A portion of the second air outlet faces the first heat exchanger, and another portion of the second air outlet faces the second heat exchanger.
16. The energy storage cabinet according to any one of claims 1-12, characterized in that, Each of the heat exchangers is in communication with a plurality of cooling channels of the battery cluster below, and the drive pump is used to drive the cooling medium to flow in the plurality of heat exchangers and the plurality of cooling channels.