Energy storage container

Abstract

The utility model provides an energy storage container, which comprises a container body, a liquid cooling unit and a battery assembly, the battery assembly is accommodated in the container body, and the liquid cooling unit comprises a liquid cooling host assembly which is accommodated in the container body and is positioned on one side of the container body along a first direction; and the water cooling condenser is arranged outside the box body and is communicated with the liquid cooling host assembly. According to the energy storage container provided by the utility model, the water cooling condenser and the liquid cooling host assembly of the liquid cooling unit are separately arranged, namely, the liquid cooling host assembly is arranged on one side of the box body along the first direction, and the water cooling condenser is arranged outside the box body and is communicated with the liquid cooling host assembly, so that the space in the energy storage container can be fully utilized; the heat dissipation requirement of the 7MWh energy storage container is met; meanwhile, the liquid cooling unit adopts the water cooling condenser to replace a fan, so that the noise and the power consumption are reduced, and the operation of the liquid cooling unit is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, and more specifically, to an energy storage container. Background Art

[0002] In the related technology, the space of 7MWh container is limited, the number of cells is large, and the heat generation is large. According to calculations, a liquid cooling unit with a cooling capacity of more than 120kW is required to meet the heat dissipation demand. At present, the cooling capacity of a single refrigeration unit is about 60kW. If the heat dissipation demand of more than 120kW required by the 7MWh container is to be met, two refrigeration units are required, and the space in the container cannot meet the requirements.

[0003] Based on this, it is necessary to improve the heat dissipation efficiency of the liquid cooling unit to meet the demand, such as by improving the circulation conversion efficiency of the refrigerant to improve the heat dissipation efficiency of the liquid cooling unit. At this time, the improvement of the circulation conversion efficiency of the refrigerant requires increasing the heat dissipation efficiency of the condenser, which requires increasing the components of the liquid cooling unit. This will cause the space occupied by the liquid cooling unit to become larger. Since the current liquid cooling unit is in the form of an integrated cabinet, the axial flow fan 221 is arranged on the upper part of the cabinet 211 (such as Figure 1 As shown in the figure, adding the axial flow fan 221 will cause a larger occupied space, making the original cabin space unable to accommodate the liquid cooling unit. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide an energy storage container to solve the technical problem existing in the related art that the space in the cabin is insufficient due to improving the heat dissipation efficiency of the liquid cooling unit.

[0005] Based on this, the utility model provides an energy storage container, including a box body, a liquid cooling unit and a battery assembly, wherein the battery assembly is accommodated in the box body, and the liquid cooling unit includes:

[0006] A liquid cooling host assembly is accommodated in the box and is located on one side of the box along the first direction;

[0007] The water-cooled condenser is arranged outside the box and is connected to the liquid-cooled mainframe assembly.

[0008] In one of the embodiments, the water-cooled condenser is detachably connected to the outside of the box.

[0009] In one embodiment, the water-cooled condenser comprises:

[0010] Condenser body;

[0011] A water inlet end is arranged on the condenser body;

[0012] A water outlet is arranged on the condenser body;

[0013] An air inlet end is disposed on the condenser body; and

[0014] A liquid outlet end is arranged on the condenser body;

[0015] The water inlet and the water outlet are used to connect the circulating coolant, and the air inlet and the liquid outlet are respectively connected to the liquid-cooled host assembly.

[0016] In one of the embodiments, the water inlet end and the water outlet end are arranged side by side on the condenser body along the first direction; the air inlet end and the liquid outlet end are arranged side by side on the condenser body along the second direction.

[0017] In one embodiment, the housing comprises:

[0018] Side panels, provided in plurality;

[0019] a bottom plate, provided as one; and

[0020] Top plate, set to one;

[0021] The bottom plate is arranged at one end of the side plate along the second direction, the top plate is arranged at the other end of the side plate along the second direction, a plurality of the side plates are arranged along the circumference of the top plate and the bottom plate, and a plurality of the side plates, the bottom plate and the top plate are enclosed to form an accommodation space, and the battery assembly and the liquid-cooled host assembly are both accommodated in the accommodation space;

[0022] The water-cooled condenser is detachably connected to the top plate.

[0023] In one embodiment, the liquid cooling unit further includes a pipeline assembly, the pipeline assembly is used to connect the liquid cooling host assembly and the water cooling condenser, and the two ends of the liquid cooling host assembly along the third direction are respectively provided with connecting ports, and the pipeline assembly includes:

[0024] An air intake pipeline, one end of which is connected to one of the connection ports of the liquid-cooled host assembly, and the other end of which is connected to the air intake end; and

[0025] A liquid outlet pipeline, one end of which is connected to the other connecting port of the liquid cooling main unit component, and the other end of which is connected to the liquid outlet.

[0026] In one embodiment, a first pipeline and a second pipeline are provided in the condenser body, the second pipeline is sleeved outside the first pipeline and there is a gap between the second pipeline and the first pipeline, one end of the second pipeline is connected to the water inlet end, the other end of the second pipeline is connected to the water outlet end, one end of the first pipeline is connected to the air inlet end, and the other end of the first pipeline is connected to the liquid outlet end.

[0027] In one embodiment, the flow direction of the medium in the first pipeline is opposite to the flow direction of the medium in the second pipeline.

[0028] In one embodiment, the battery assembly includes a liquid cooling plate, and the liquid cooling host assembly includes a cabinet, and a heat exchange component, a power component, a compression component, and a throttling component arranged in the cabinet;

[0029] Among them, the heat exchange component, the liquid cooling plate and the power component are connected in sequence through pipelines to form a primary closed loop; the heat exchange component, the compression component, the water-cooled condenser and the throttling component are connected in sequence through pipelines to form a secondary closed loop.

[0030] In one of the embodiments, a liquid inlet temperature sensor is provided on the pipeline between the heat exchange element and the liquid cooling plate;

[0031] And / or, a liquid outlet temperature sensor is provided on the pipeline between the liquid cooling plate and the power component.

[0032] The beneficial effect of the energy storage container provided by the embodiment of the utility model is that: compared with the related art, the energy storage container of the utility model is achieved by separately arranging the water-cooled condenser and the liquid-cooled main engine component of the liquid cooling unit, that is, the liquid-cooled main engine component is arranged on one side of the box body along the first direction, and the water-cooled condenser is arranged outside the box body and is connected to the liquid-cooled main engine component, thereby making full use of the space inside the energy storage container to meet the heat dissipation requirements of the 7MWh energy storage container; at the same time, the liquid cooling unit of the utility model adopts a water-cooled condenser instead of a fan, which reduces noise and power consumption, and makes the operation of the liquid cooling unit more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 It is a schematic diagram of the top view of the structure of a liquid cooling unit in the related art;

[0035] Figure 2 A schematic diagram of the main structure of an energy storage container provided by an embodiment of the utility model;

[0036] Figure 3 A schematic diagram of the top view of the energy storage container provided in an embodiment of the utility model;

[0037] Figure 4 A working principle diagram of a liquid cooling unit for cooling a battery assembly provided in an embodiment of the utility model.

[0038] Among them, the reference numerals in the figure are:

[0039] 100. Energy storage container; 10. Box body; 11. Side panel; 12. Bottom plate; 13. Top plate; 21. Liquid-cooled host assembly; 210. Connection port; 211. Cabinet; 212. Heat exchange component; 213. Power component; 214. Compressor; 215. Throttling component; 216. Liquid inlet temperature sensor; 217. Liquid outlet temperature sensor; 22. Water-cooled condenser; 221. Condenser body; 222. Water inlet; 223. Water outlet; 224. Air inlet; 225. Liquid outlet; 30. Battery assembly; 101. Accommodation space; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the related art, under the background of long-term energy storage, the power demand of energy storage containers is getting higher and higher, which brings with it the problem of battery heat dissipation and limited container space. The embodiment of the utility model can arrange a liquid cooling unit with a cooling capacity of more than 120kW in a 20-foot container through the split arrangement of the liquid cooling unit, meeting the heat dissipation demand of 7MWh container batteries.

[0045] Please also read Figure 2 and Figure 3 Now, the energy storage container 100 provided by the embodiment of the utility model is described. The box body 10 is roughly in a rectangular shape, the first direction X is the length direction of the box body 10; the second direction Y is the height direction of the box body 10; and the third direction Z is the width direction of the box body 10.

[0046] The energy storage container 100 includes a box body 10, a liquid cooling unit and a battery assembly 30. The battery assembly 30 is accommodated in the box body 10, and the liquid cooling unit is at least partially accommodated in the box body 10. The liquid cooling unit is used to dissipate heat for the battery assembly 30 to ensure the normal operation of the battery assembly 30.

[0047] The liquid cooling unit includes a liquid cooling host component 21 and a water cooling condenser 22. The liquid cooling host component 21 is accommodated in the housing 10 and is located on one side of the housing 10 along the first direction X; the water cooling condenser 22 is arranged outside the housing 10, and the water cooling condenser 22 is connected to the liquid cooling host component 21 to realize a closed loop of the liquid cooling unit.

[0048] The energy storage container 100 provided in the embodiment of the utility model is compared with the related art. The energy storage container 100 in the embodiment of the utility model is configured by separately arranging the water-cooled condenser 22 and the liquid-cooled main unit component 21 of the liquid cooling unit, that is, the liquid-cooled main unit component 21 is arranged on one side of the box body 10 along the first direction X, and the water-cooled condenser 22 is arranged outside the box body 10 and is connected to the liquid-cooled main unit component 21. Therefore, the space inside the energy storage container 100 can be fully utilized to meet the heat dissipation demand of the 7MWh energy storage container 100. At the same time, the liquid cooling unit in the embodiment of the utility model adopts the water-cooled condenser 22 instead of the fan, which reduces noise and power consumption, and makes the operation of the liquid cooling unit more stable.

[0049] In one embodiment of the present invention, please refer to Figure 2 and Figure 3 The water-cooled condenser 22 is detachably connected to the outside of the box 10 to facilitate the disassembly and assembly of the water-cooled condenser 22. For example, during the transportation of the energy storage container 100, the water-cooled condenser 22 can be removed and placed separately from the box 10 to facilitate the transportation of the energy storage container 100. In one embodiment, the water-cooled condenser 22 is mounted on the top of the box 10 by screws. In other embodiments, the water-cooled condenser 22 can also be detachably mounted on the top of the box 10 by buckles.

[0050] In one embodiment of the present invention, please refer to Figure 2 and Figure 4 The water-cooled condenser 22 includes a condenser body 221, a water inlet 222, a water outlet 223, an air inlet 224 and a liquid outlet 225. The water inlet 222, the water outlet 223, the air inlet 224 and the liquid outlet 225 are all arranged on the condenser body 221; the water inlet 222 and the water outlet 223 are used to connect the circulating coolant; the air inlet 224 and the liquid outlet 225 are respectively connected to the liquid-cooled host assembly 21, thereby realizing a closed loop. In this embodiment, the gas discharged from the liquid-cooled host assembly 21 enters the condenser body 221 from the air inlet 224 and is cooled into liquid, and is discharged to the liquid-cooled host assembly 21 from the liquid outlet 225. In a specific embodiment, the circulating coolant can be factory circulating water.

[0051] In one embodiment of the present invention, please refer to Figure 2 The water inlet end 222 and the water outlet end 223 of the water-cooled condenser 22 are arranged side by side on the condenser body 221 along the first direction X; the air inlet end 224 and the liquid outlet end 225 of the water-cooled condenser 22 are arranged side by side on the condenser body 221 along the second direction Y. In this embodiment, the water inlet end 222 and the water outlet end 223 are arranged side by side on the top of the condenser body 221, which is convenient for connecting the factory circulating water through the pipeline; the air inlet end 224 and the liquid outlet end 225 are arranged side by side on the side of the condenser body 221, which is convenient for connecting with the liquid cooling host assembly 21.

[0052] In one embodiment of the present invention, please refer to Figure 2 and Figure 3 The box body 10 includes a side plate 11, a bottom plate 12 and a top plate 13. The side plates 11 are provided in plurality, and the plurality of side plates 11 are arranged along the circumference of the top plate 13 and the bottom plate 12; the bottom plate 12 is provided in one piece; and the top plate 13 is provided in one piece. The bottom plate 12 is provided at one end of the side plate 11 along the second direction Y, and the top plate 13 is provided at the other end of the side plate 11 along the second direction Y. The plurality of side plates 11, the bottom plate 12 and the top plate 13 enclose a containing space 101, and the battery assembly 30 and the liquid-cooled host assembly 21 are both contained in the containing space 101.

[0053] In this embodiment, the condenser body 221 of the water-cooled condenser 22 is detachably connected to a side surface of the top plate 13 away from the bottom plate 12 to facilitate the disassembly and assembly of the water-cooled condenser 22. In one embodiment, the condenser body 221 is mounted on the top plate 13 by screws. In other embodiments, the condenser body 221 can also be detachably mounted on the top plate 13 by buckles.

[0054] In one embodiment of the present invention, please refer to Figure 3 The liquid cooling unit also includes a pipeline assembly, which is used to connect the liquid cooling host assembly 21 and the water cooling condenser 22, and the pipeline assembly is at least partially accommodated in the accommodating space 101. Specifically, the liquid cooling host assembly 21 is provided with connecting ports 210 at both ends along the third direction Z, and the pipeline assembly includes an air inlet pipeline and a liquid outlet pipeline. Among them, one end of the air inlet pipeline is connected to one of the connecting ports 210 of the liquid cooling host assembly 21, and the other end of the air inlet pipeline is connected to the air inlet end 224 of the water cooling condenser 22; one end of the liquid outlet pipeline is connected to another connecting port 210 of the liquid cooling host assembly 21, and the other end of the liquid outlet pipeline is connected to the liquid outlet end 225 of the water cooling condenser 22. In this embodiment, the air inlet end 224 of the water-cooled condenser 22 is connected to the liquid-cooled main unit assembly 21 through an air inlet pipeline, and the liquid outlet end 225 of the water-cooled condenser 22 is connected to the liquid-cooled main unit assembly 21 through a liquid outlet pipeline, thereby realizing a closed loop. The two connecting ports 210 are respectively arranged at the two ends of the liquid-cooled main unit assembly 21 along the third direction Z, which can save the pipeline length of the pipeline assembly and facilitate the arrangement of the pipeline assembly in the energy storage container 100.

[0055] In one embodiment of the utility model, a first pipeline and a second pipeline are provided in the condenser body 221. The second pipeline is sleeved outside the first pipeline, and there is a gap between the second pipeline and the first pipeline. One end of the second pipeline is connected to the water inlet end 222, and the other end of the second pipeline is connected to the water outlet end 223. One end of the first pipeline is connected to the air inlet end 224, and the other end of the first pipeline is connected to the liquid outlet end 225. In this embodiment, by providing the first pipeline and the second pipeline that are sleeved with each other in the condenser body 221, the circulating water of the plant area flows into the gap between the first pipeline and the second pipeline and is used to cool the refrigerant in the first pipeline, and the heat dissipation efficiency is high.

[0056] In one embodiment, the condenser body 221 has a containing cavity therein, and the first pipeline and the second pipeline are both contained in the containing cavity, and the first pipeline and the second pipeline are both arranged in an S-shape or a U-shape in the containing cavity.

[0057] In one embodiment, the flow direction of the medium in the first pipeline is opposite to the flow direction of the medium in the second pipeline, so as to improve the heat dissipation efficiency and further improve the circulation conversion efficiency of the refrigerant in the first pipeline.

[0058] In another embodiment of the utility model, the condenser body 221 has a accommodating chamber, the water outlet 223 and the water inlet 222 are connected to the accommodating chamber, and a pipeline for refrigerant circulation is arranged in the accommodating chamber, one end of the pipeline is connected to the air inlet 224, and the other end of the pipeline is connected to the liquid outlet 225. In this embodiment, the accommodating chamber contains plant circulating water used as a coolant, and the plant circulating water cools the refrigerant in the pipeline, so that the refrigerant changes from gas to liquid. In one embodiment, the pipeline for refrigerant circulation is arranged in an S-shape or a U-shape in the accommodating chamber.

[0059] In one embodiment of the present invention, please refer to Figure 4 The battery assembly 30 includes a battery module and a liquid cooling plate, and the liquid cooling plate is used to perform heat exchange for the battery module. The liquid cooling host assembly 21 includes a cabinet 211, and a heat exchanger 212, a power component 213, a compressor 214 and a throttle 215 arranged in the cabinet 211. The above-mentioned connection port 210 is arranged at both ends of the cabinet 211 along the third direction Z. Among them, the heat exchanger 212, the liquid cooling plate and the power component 213 are connected in sequence through pipelines to form a primary closed loop, and the primary closed loop is used to dissipate heat from the battery module; the heat exchanger 212, the compressor 214, the water-cooled condenser 22 and the throttle 215 are connected in sequence through pipelines to form a secondary closed loop, and the secondary closed loop is used to improve the circulation conversion efficiency of the refrigerant, thereby improving the heat dissipation efficiency of the heat exchanger 212 to the battery module.

[0060] In a specific implementation, the heat exchanger 212 is used for heat exchange, and it can be a plate heat exchanger; the power part 213 is used to transport the coolant, and it can be a water pump; the compression part 214 is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous state, and it can be an electric compressor; the throttling part 215 is used to throttle the refrigerant, and it can be an expansion valve. It can be understood that the plate heat exchanger, the water pump, the electric compressor and the expansion valve can adopt the corresponding structures in the relevant technology, and will not be described in detail here.

[0061] The working principle of the liquid cooling unit of this embodiment is: the temperature of the high-temperature coolant is reduced by evaporating the refrigerant in the heat exchange element 212 and absorbing heat, and then the low-temperature coolant is transported to each liquid cooling plate through the power element 213, and the high-temperature coolant flowing out of the liquid cooling plate flows back to the heat exchange element 212 through the power element 213, and circulates in this way to realize a primary closed loop; the compression element 214 first compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gas state, and transports it to the water-cooled condenser 22, where the refrigerant is cooled to a liquid state, and then throttled by a throttling element 215. At this time, most of the refrigerant is still in a liquid state, which is a medium-temperature and high-pressure liquid refrigerant, and then flows to the heat exchange element 212, where the liquid refrigerant is evaporated and absorbs heat, reducing the temperature of the coolant, and then the refrigerant becomes a gas and returns to the compression element 214, thus forming a refrigeration cycle, that is, realizing a secondary closed loop.

[0062] In one embodiment of the present invention, please refer to Figure 4 , a liquid inlet temperature sensor 216 is provided on the pipeline between the heat exchanger 212 and the liquid cooling plate; and a liquid outlet temperature sensor 217 is provided on the pipeline between the liquid cooling plate and the power component 213. In this embodiment, the operating parameters of the power component 213 can be effectively controlled by the temperature difference of the two temperature parameters, the liquid inlet temperature sensor 216 and the liquid outlet temperature sensor 217, which are fed back in real time. In other embodiments, the liquid inlet temperature sensor 216 can be provided only on the pipeline between the heat exchanger 212 and the liquid cooling plate, or the liquid outlet temperature sensor 217 can be provided only on the pipeline between the liquid cooling plate and the power component 213.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy storage container, characterized in that: It includes a box, a liquid cooling unit and a battery assembly, wherein the battery assembly is accommodated in the box, and the liquid cooling unit includes: A liquid cooling host assembly is accommodated in the box and is located on one side of the box along the first direction; The water-cooled condenser is arranged outside the box and is connected to the liquid-cooled mainframe assembly.

2. The energy storage container according to claim 1, characterized in that: The water-cooled condenser is detachably connected to the outside of the box.

3. The energy storage container according to claim 1, characterized in that: The water-cooled condenser comprises: Condenser body; A water inlet end is arranged on the condenser body; A water outlet is arranged on the condenser body; An air inlet end is disposed on the condenser body; and A liquid outlet end is arranged on the condenser body; The water inlet and the water outlet are used to connect the circulating coolant, and the air inlet and the liquid outlet are respectively connected to the liquid-cooled host assembly.

4. The energy storage container according to claim 3, characterized in that: The water inlet end and the water outlet end are arranged side by side on the condenser body along the first direction; the air inlet end and the liquid outlet end are arranged side by side on the condenser body along the second direction.

5. The energy storage container according to claim 1, characterized in that: The box body comprises: Side panels, provided in plurality; a bottom plate, provided as one; and Top plate, set to one; The bottom plate is arranged at one end of the side plate along the second direction, the top plate is arranged at the other end of the side plate along the second direction, a plurality of the side plates are arranged along the circumference of the top plate and the bottom plate, and a plurality of the side plates, the bottom plate and the top plate are enclosed to form an accommodation space, and the battery assembly and the liquid-cooled host assembly are both accommodated in the accommodation space; The water-cooled condenser is detachably connected to the top plate.

6. The energy storage container according to claim 3, characterized in that: The liquid cooling unit further includes a pipeline assembly, which is used to connect the liquid cooling host assembly and the water cooling condenser. The two ends of the liquid cooling host assembly along the third direction are respectively provided with connection ports. The pipeline assembly includes: An air intake pipeline, one end of which is connected to one of the connection ports of the liquid-cooled host assembly, and the other end of which is connected to the air intake end; and A liquid outlet pipeline, one end of which is connected to the other connecting port of the liquid cooling main unit component, and the other end of which is connected to the liquid outlet.

7. The energy storage container according to claim 3, characterized in that: A first pipeline and a second pipeline are arranged in the condenser body, the second pipeline is sleeved outside the first pipeline and there is a gap between the second pipeline and the first pipeline, one end of the second pipeline is connected to the water inlet end, the other end of the second pipeline is connected to the water outlet end, one end of the first pipeline is connected to the air inlet end, and the other end of the first pipeline is connected to the liquid outlet end.

8. The energy storage container according to claim 7, characterized in that: The flow direction of the medium in the first pipeline is opposite to the flow direction of the medium in the second pipeline.

9. The energy storage container according to any one of claims 1 to 8, characterized in that: The battery assembly includes a liquid cooling plate, and the liquid cooling host assembly includes a cabinet, and a heat exchange component, a power component, a compression component and a throttling component arranged in the cabinet; Among them, the heat exchange component, the liquid cooling plate and the power component are connected in sequence through pipelines to form a primary closed loop; the heat exchange component, the compression component, the water-cooled condenser and the throttling component are connected in sequence through pipelines to form a secondary closed loop.

10. The energy storage container according to claim 9, characterized in that: A liquid inlet temperature sensor is provided on the pipeline between the heat exchange element and the liquid cooling plate; And / or, a liquid outlet temperature sensor is provided on the pipeline between the liquid cooling plate and the power component.

Images