Integrally-designed energy storage heat management system and installation method thereof

Abstract

The invention discloses an integrally designed energy storage heat management system which comprises a main machine and a condensation heat dissipation module, the main machine adopts a floor type installation mode and comprises a shell frame, a compressor, an evaporator and a throttling element, the compressor, the evaporator and the throttling element are arranged in the shell frame, and the condensation heat dissipation module and the main machine are integrally designed. And the first end of the main frame is connected to the top of the shell frame through the metal plate frame to form an inverted-L-shaped structure with the host. The condensation heat dissipation module comprises a condenser, the inlet end of the condenser communicates with an exhaust port of the compressor, and the outlet end of the condenser communicates with an inlet of the throttling element. The integrated design can avoid on-site fire welding, vacuumizing, refrigerant filling and other operations, and meanwhile, the integrated design can shorten the pipeline path, so that the cost is reduced, and invalid heat transfer is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management, and in particular to an integrated energy storage thermal management system and an installation method thereof. Background Art

[0002] The main function of thermal management / temperature control is to keep the temperature of the energy storage system within a reasonable range, reduce the life attenuation and thermal runaway risk of the energy storage system, and play an important role in the safety, efficiency, life, and performance of energy storage. In the energy storage system, the modules that need thermal management mainly include batteries and converters. The main technical routes for thermal management of energy storage at present include air cooling, liquid cooling, and phase change cooling. Among them, the air cooling system has low heat dissipation efficiency, poor temperature difference control, and large footprint, and its scope of application is relatively limited. With the continuous improvement of the single unit scale and energy density of energy storage projects, the air cooling system is gradually unable to meet the system requirements in terms of heat dissipation efficiency. The liquid cooling system has strong heat dissipation capacity and low life cycle cost. The heat transfer coefficient and specific heat capacity of the coolant are higher, and it is not affected by factors such as altitude and air pressure. Therefore, the liquid cooling system has stronger heat dissipation capacity than the air cooling system, and is more adaptable to the development trend of large-scale and high energy density energy storage projects.

[0003] Most existing liquid cooling systems are floor-standing installations, with the condensing heat dissipation module installed in the host. In order to dissipate heat better, the condensing heat dissipation module usually needs to be equipped with a fan to introduce external air into the fins to achieve heat exchange with the outside air. In existing liquid cooling systems, the fan is usually set on the side or back of the host, using a side air outlet method. In comparison, the wind field is not smooth and the heat exchange effect is not good. In addition, existing liquid cooling systems often require the condensing heat dissipation module to be connected to the host on site, so welding, vacuuming, and refrigerant filling are required on site. The installation process is complicated and there are certain safety hazards. Summary of the invention

[0004] In view of some or all of the problems in the prior art, the first aspect of the present invention provides an integrated energy storage thermal management system, comprising:

[0005] A main unit, which is installed in a floor-standing manner, comprises a housing frame, and a compressor, an evaporator and a throttling element arranged inside the housing frame; and

[0006] A condensing and cooling module is integrally designed with the main unit, wherein a first end of the condensing and cooling module is connected to the top of the outer shell frame via a sheet metal frame to form a "┐"-shaped structure with the main unit, and the condensing and cooling module comprises a condenser, wherein an inlet end of the condenser is connected to an exhaust port of the compressor, and an outlet end of the condenser is connected to an inlet of the throttling element.

[0007] Furthermore, the inlet end and the outlet end of the condenser are respectively welded to the exhaust port of the compressor and the inlet of the throttling element through copper pipes.

[0008] Furthermore, the condenser comprises an air inlet, and the air inlet is arranged on the second side and / or the third side of the condenser, wherein the second side and the third side are perpendicular to the first end.

[0009] Furthermore, there is an angle of no more than 90° between the air inlet and the bottom of the condenser.

[0010] Furthermore, the condensation and heat dissipation module also includes a first fan.

[0011] Furthermore, the first fan is arranged on the top of the condenser.

[0012] Furthermore, the energy storage thermal management system also includes a first natural heat dissipation module, a first side of the first natural heat dissipation module is connected to the fourth side of the condensing heat dissipation module, wherein the fourth side refers to a side opposite to the first side of the condensing heat dissipation module, and the first natural heat dissipation module is connected to the first water pump in the host through a chuck, and is used to achieve natural heat dissipation of the coolant of the first module.

[0013] Furthermore, the first natural heat dissipation module includes:

[0014] A radiator, comprising an air inlet, wherein the air inlet is obliquely arranged on a second side and / or a third side of the radiator, wherein the second side and the third side are perpendicular to the first side; and

[0015] The second fan is arranged on the top of the radiator.

[0016] Furthermore, the energy storage thermal management system also includes a second natural heat dissipation module, which is connected to the fourth side of the first natural heat dissipation module, wherein the fourth side refers to the side opposite to the first side of the first natural heat dissipation module, and the second natural heat dissipation module is connected to the second water pump in the host through a chuck, and is used to achieve natural heat dissipation of the coolant of the second module.

[0017] Based on the energy storage thermal management system as described above, the second aspect of the present invention provides a method for installing the energy storage thermal management system, including:

[0018] Through the hoisting holes on the sheet metal frame, hoist the host and condensing heat dissipation module as a whole to the preset site;

[0019] fixing the host to the ground; and

[0020] The first natural heat dissipation module is fixed to one side of the condensing heat dissipation module by means of screws, and the water inlet and outlet pipes of the first natural heat dissipation module are connected to the water channel in the main unit by means of a chuck.

[0021] A third aspect of the present invention provides an energy storage system, which includes the energy storage thermal management system as described above.

[0022] The present invention provides an energy storage thermal management system with an integrated design and an installation method thereof, wherein the main unit and the condensing and cooling components are designed in an integrated manner, thereby avoiding on-site hot welding, vacuuming, refrigerant filling and other operations. At the same time, the integrated design can shorten the pipeline path to reduce costs and avoid ineffective heat transfer. At the same time, the condensing and cooling components are arranged at the top, and compared with the side air outlet method, the wind field is better, which is beneficial to improving the heat exchange efficiency of the condenser. The inclined air inlet design can also increase the windward area of ​​the condenser and the heat exchanger, further improving the heat exchange effect. In addition, the wind fields of the condensing and cooling components and each natural radiator component are completely independent, do not interfere with each other, and have no cascading heat effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To further illustrate the above and other advantages and features of various embodiments of the present invention, a more specific description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings only depict typical embodiments of the present invention and are therefore not to be considered as limiting the scope thereof. In the accompanying drawings, for clarity, identical or corresponding parts will be represented by identical or similar reference numerals.

[0024] Figure 1 A schematic diagram showing the structure of an integrated energy storage thermal management system according to an embodiment of the present invention;

[0025] Figure 2 A schematic diagram showing the connection between a condensation and heat dissipation component and a host frame according to an embodiment of the present invention;

[0026] Figure 3 A schematic diagram showing the structure of a condensation heat dissipation component according to an embodiment of the present invention; and

[0027] Figure 4 A schematic diagram showing the connection relationship of internal components of an integrated energy storage thermal management system according to an embodiment of the present invention.

[0028] Reference numerals list

[0029] 101 host, 102 condensing heat dissipation module, 103 first natural heat dissipation module, 104 second natural heat dissipation module, 201 shell frame, 202 sheet metal frame, 211-216 lifting holes, 301 condenser, 311 air inlet, 302 first fan, 001 first heat dissipation module, 401 compressor, 421 condenser, 422 first fan, 403 throttling element, 404 evaporator, 405 first water pump, 406 first three-way valve, 471 first radiator, 472 second fan DETAILED DESCRIPTION

[0030] In the following description, the present invention is described with reference to various embodiments. However, those skilled in the art will recognize that various embodiments can be implemented without one or more specific details or with other replacement and / or additional methods, materials or components. In other cases, well-known structures, materials or operations are not shown or described in detail to avoid blurring the inventive point of the present invention. Similarly, for the purpose of explanation, specific quantities, materials and configurations are set forth to provide a comprehensive understanding of embodiments of the present invention. However, the present invention is not limited to these specific details. In addition, it should be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn in correct proportions.

[0031] In this specification, reference to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. The phrase "in one embodiment" appearing in various places in this specification does not necessarily all refer to the same embodiment.

[0032] In the embodiments of the present invention, the throttling elements, including the first throttling element, the second throttling element, etc., refer to devices or elements used to reduce the gas pressure to achieve the purpose of evaporation, for example, they may be: an expansion valve, a capillary tube, a throttling tube, etc.

[0033] In order to simplify the installation process of the energy storage thermal management system and improve its heat exchange efficiency, the present invention provides an integrated energy storage thermal management system, whose main unit and condensation and heat dissipation module adopt an integrated design, so there is no need for hot welding, vacuuming, refrigerant filling and other operations on site. At the same time, the energy storage thermal management system can realize the simultaneous top-up of refrigerant and coolant, improve the wind field, and improve the heat exchange efficiency.

[0034] The technical solution of the present invention is further described below in conjunction with the accompanying drawings of the embodiments.

[0035] Figure 1 The schematic diagram of the structure of an integrated energy storage thermal management system according to one embodiment of the present invention is shown. Figure 1As shown, an integrated energy storage thermal management system includes a host 101 and a condensing and cooling module 102, wherein the host 101 is installed in a floor-standing manner, and the condensing and cooling module 102 is integrated with the host 101. Specifically, the first end of the condensing and cooling module 102 is fixed to the top of the host 101 to form a "┐"-shaped structure with the host, wherein the "┐"-shaped structure means that the condensing and cooling module 102 and the host 101 constitute a bending structure having a transverse portion and a longitudinal portion, wherein the condensing and cooling module 102 constitutes the transverse portion of the bending structure, and the host 101 constitutes the longitudinal portion of the bending structure, and the angle between the transverse portion and the longitudinal portion is 60° to 120°, preferably 80° to 95°, and most preferably 90°.

[0036] Figure 2 A schematic diagram showing the connection between the condensation and heat dissipation assembly and the host frame according to an embodiment of the present invention is shown. Figure 2 As shown, the host 101 includes a housing frame 201, and the condensation and heat dissipation module 102 includes a sheet metal frame 202. The bottom end of the sheet metal frame 202 is fixed to the top of the housing frame 201 by means of threaded connection or the like. Figure 2 As shown, in one embodiment of the present invention, in order to facilitate installation, a plurality of lifting holes are respectively provided on the outer shell frame 201 and the sheet metal frame 202. For example, two lifting holes 211 and 212 can be provided on the top of the outer shell frame 201, two lifting holes 213 and 214 can be provided on the bottom of the sheet metal frame close to the main machine, and two lifting holes 215 and 216 can be provided on the top of the sheet metal frame away from the main machine. In the lifting process, the lifting holes 211 to 214 can be used for weighing, and the lifting angle can be adjusted through the lifting holes 215 and 216. It should be understood that, as needed, a plurality of lifting holes can be provided on the bottom of the sheet metal frame 202 away from the main machine and / or on the top of the sheet metal frame close to the main machine.

[0037] Figure 3 FIG. 1 is a schematic diagram showing the structure of a condensation heat dissipation component according to an embodiment of the present invention. Figure 3 As shown, in one embodiment of the present invention, the condensation heat dissipation component includes a condenser 301 and a first fan 302, wherein the first fan 302 is disposed on the top of the condenser 301 and adopts an upward air outlet mode, which has a better wind field and better heat exchange efficiency than the side air outlet. Figure 3As shown, in one embodiment of the present invention, the condenser 301 includes an air inlet 311, and the air inlet 311 is arranged on the second side and / or the third side of the condenser 301 perpendicular to the first end thereof. In order to increase the windward area and further improve the heat exchange effect, in one embodiment of the present invention, the air inlet 311 is arranged obliquely, that is, there is an angle of no more than 90° between the air inlet 311 and the bottom of the condenser 301, so that the overall cross-section of the condensation and heat dissipation component is approximately trapezoidal.

[0038] Back to Figure 1 In some embodiments of the present invention, the energy storage thermal management system further includes at least one natural heat dissipation module. When the external ambient temperature is low, the natural heat dissipation module can directly cool the coolant naturally without mechanical refrigeration by a compressor, thereby reducing the overall power consumption of the system.

[0039] like Figure 1 As shown, the natural heat dissipation module is connected to the fourth side of the condensing heat dissipation module opposite to the first side thereof. Similarly, the natural heat dissipation module also includes a sheet metal frame, so it can be connected to the condensing heat dissipation module by means of screws or other threaded connections. When multiple natural heat dissipation modules are included, such as the first natural heat dissipation module 103 and the second natural heat dissipation module 104, they can be connected in sequence. That is, the first side of the first natural heat dissipation module 103 is connected to the fourth side of the condensing heat dissipation module, and the second natural heat dissipation module 104 is connected to the fourth side of the first natural heat dissipation module 103 opposite to the first side thereof, and so on.

[0040] The structure of the natural heat dissipation module is similar to that of the condensing heat dissipation module. Any natural heat dissipation module includes a radiator and a fan. Similarly, the radiator includes an air inlet arranged obliquely to increase the windward area of ​​the heat exchanger and improve the heat exchange effect. The air inlet is arranged on the second side and / or the third side of the natural heat dissipation module which is perpendicular to the first side thereof, so that the wind fields between the natural heat dissipation modules and between the natural heat dissipation modules and the condensing heat dissipation modules are completely independent, do not interfere with each other, and have no cascading heat effect.

[0041] Figure 4 A schematic diagram showing the connection relationship of the internal components of an integrated energy storage thermal management system according to an embodiment of the present invention. Figure 4As shown, the energy storage thermal management system includes a compressor 401, a condenser 421, a throttling element 403 and an evaporator 404 to form a refrigerant cycle. The compressor 401 is used to compress the refrigerant, the exhaust port of the compressor 401 is connected to the inlet of the condenser 421, the outlet of the condenser 421 is connected to the inlet of the throttling element 403, the outlet of the throttling element 403 is connected to the first inlet of the evaporator 404, and the first outlet of the evaporator 404 is connected to the air inlet of the compressor 401. After the refrigerant is compressed by the compressor 401, it enters the condenser 421 to exchange heat with the external air, and then enters the throttling element 403, the throttling element 403 throttles the refrigerant, and the throttled refrigerant quickly expands and evaporates. The refrigerant that has undergone throttling expansion enters the evaporator 404 and exchanges heat with the coolant in the coolant circulation. The refrigerant after heat exchange returns to the compressor 401 again.

[0042] Among them, in an embodiment of the present invention, the compressor 401, the throttling element 403 and the evaporator 404 are arranged in the outer shell frame of the main unit, and the condenser 421 is a component in the condensation and heat dissipation module, which is arranged in the sheet metal frame. As mentioned above, the condensation and heat dissipation module is designed and installed as an integral unit with the main unit, so during manufacturing, the condenser is directly fixedly connected with the pipes between the compressor and the throttling element. Specifically, in one embodiment of the present invention, the inlet and outlet of the condenser are welded to the exhaust port of the compressor and the inlet of the throttling element through copper pipes.

[0043] The coolant circulation includes a first water pump 405, which provides power for the coolant to flow through the first module to be cooled 001 to take away the heat emitted by the first module to be cooled 001. The first water pump 405 is arranged inside the shell frame. As mentioned above, in one embodiment of the present invention, when the external environment temperature is low, the coolant can be directly cooled naturally without flowing through the evaporator, that is, heat exchange with the air is achieved through the first natural cooling module. To achieve this purpose, a first three-way valve 406 can be arranged in the coolant circulation, the first end of the first three-way valve 406 is connected to the first module to be cooled 001, the second end is connected to the second inlet of the evaporator 404, and the third end is connected to the first radiator 471 of the first natural cooling module. By controlling the first three-way valve 406, when the external environment is lower than the preset value, the coolant in the coolant circulation directly enters the first radiator 471 for natural cooling after flowing through the first module to be cooled 001, without the need for a compressor, thereby achieving energy saving and consumption reduction. In one embodiment of the present invention, the first radiator 471 is connected to the coolant circulation in the host through a chuck, such as the interface of the water pump and / or the three-way valve.

[0044] In addition, the condenser 421 and the first radiator 471 are respectively provided with a first fan 422 and a second fan 472 to introduce air into the air inlet to improve the heat dissipation efficiency.

[0045] The thermal management system may include multiple parallel coolant circulations to perform thermal management on different modules, such as battery packs and power exchange modules PCS. Each coolant circulation can exchange heat with a refrigerant circulation and / or a natural heat dissipation module. Each coolant circulation can share a refrigerant circulation. Each coolant circulation and a natural heat dissipation module can be set in a one-to-one correspondence to improve the heat exchange efficiency. The natural heat dissipation module can also be shared through valves, etc. to reduce the overall volume of the system.

[0046] As mentioned above, the energy storage thermal management system is more convenient to install than the existing thermal management system. Specifically, when installing the energy storage thermal management system, first, the main unit and the condensing heat dissipation module are hoisted as a whole to the preset site through the hoisting holes, and then the main unit is fixed to the ground. When a natural heat dissipation module is provided, after fixing the main unit and the condensing heat dissipation module, the natural heat dissipation module is further fixed to one side of the condensing heat dissipation module by screws, and the inlet and outlet water pipes of the natural heat dissipation module are connected to the water channel in the main unit through a chuck, and the installation of the natural heat dissipation module is similar. It can be seen that the overall installation process only requires screw connection and water channel chuck connection, and no operations such as hot welding, vacuuming, and refrigerant filling are required.

[0047] The energy storage thermal management system is applied to the energy storage system. Since the refrigerant and the coolant are simultaneously raised to the top, the overall wind field is better and the heat dissipation efficiency is higher.

[0048] Although various embodiments of the present invention are described above, it should be understood that they are presented as examples only and not as limitations. It is obvious to those skilled in the relevant art that various combinations, modifications and changes can be made thereto without departing from the spirit and scope of the present invention. Therefore, the breadth and scope of the present invention disclosed herein should not be limited by the exemplary embodiments disclosed above, but should only be defined according to the attached claims and their equivalents.

Claims

1. An integrated energy storage thermal management system, characterized in that: include: The host is installed in a floor-standing manner, and includes a housing frame, and a compressor, an evaporator, and a throttling element arranged inside the housing frame; as well as A condensing and cooling module is integrally designed with the main unit, wherein a first end of the condensing and cooling module is connected to the top of the outer shell frame via a sheet metal frame to form a "┐"-shaped structure with the main unit, and the condensing and cooling module comprises a condenser, wherein an inlet end of the condenser is connected to an exhaust port of the compressor, and an outlet end of the condenser is connected to an inlet of the throttling element.

2. The energy storage thermal management system according to claim 1, characterized in that: The inlet end and the outlet end of the condenser are respectively welded to the exhaust port of the compressor and the inlet of the throttling element through copper pipes.

3. The energy storage thermal management system according to claim 1, characterized in that: The condenser comprises an air inlet, and the air inlet is arranged on a second side and / or a third side of the condenser which is perpendicular to the first end thereof.

4. The energy storage thermal management system according to claim 3, characterized in that: An angle of no more than 90° is formed between the air inlet and the bottom of the condenser.

5. The energy storage thermal management system according to claim 1, characterized in that: The condensation and heat dissipation module also includes a first fan, which is arranged on the top of the condenser.

6. The energy storage thermal management system according to claim 1, characterized in that: It also includes a first natural heat dissipation module, a first side of which is connected to a fourth side of the condensing heat dissipation module opposite to its first end, the first natural heat dissipation module is connected to a first water pump in the host through a chuck, and is configured to achieve natural heat dissipation of the coolant of the first module.

7. The energy storage thermal management system according to claim 6, characterized in that: The first natural heat dissipation module comprises: A radiator, comprising an air inlet, wherein the air inlet is obliquely arranged on a second side and / or a third side of the radiator, wherein the second side and the third side are perpendicular to the first side; and The second fan is arranged on the top of the radiator.

8. The energy storage thermal management system according to claim 6, characterized in that: It also includes a second natural heat dissipation module, which is connected to the fourth side of the first natural heat dissipation module opposite to the first side thereof, and the second natural heat dissipation module is connected to the second water pump in the host through a chuck, and is configured to achieve natural heat dissipation of the coolant of the second module.

9. A method for installing an energy storage thermal management system according to any one of claims 1 to 8, characterized in that: Includes steps: Through the hoisting holes on the sheet metal frame, hoist the host and condensing heat dissipation module as a whole to the preset site; and The host is fixed to the ground.

10. The installation method according to claim 9, characterized in that: When the energy storage thermal management system includes a first natural heat dissipation module, it also includes the following steps: The first natural heat dissipation module is fixed to one side of the condensing heat dissipation module by means of screws, and the water inlet and outlet pipes of the first natural heat dissipation module are connected to the water channel in the main unit by means of a chuck.

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