Temperature control system for energy storage

Abstract

A temperature control system for energy storage comprises an energy storage functional assembly and a temperature control assembly, and the temperature control assembly comprises a condenser, an evaporator, a liquid cooling functional assembly and an air cooling functional assembly; the condenser, the evaporator and the liquid cooling functional assembly are in pipeline connection to form liquid cooling circulation, at least part of the energy storage functional assembly is directly connected with a liquid cooling circulation pipeline, and at least part of the energy storage functional assembly is in heat exchange connection with the evaporator; and the air cooling functional assembly is in heat exchange connection with the evaporator to form air cooling circulation. According to the utility model, liquid cooling circulation in the temperature control assembly respectively regulates and controls the temperature of a part of the energy storage functional assembly through two modes, wherein one mode is that a pipeline is directly connected with the energy storage functional assembly through a coolant for cooling; according to the other mode, the evaporator and part of the energy storage functional assembly are used for heat exchange regulation and control; meanwhile, the evaporator is provided with an air cooling functional assembly to form air cooling circulation, that is, the evaporator can control the temperature through liquid cooling and air cooling, the temperature is controlled through air cooling when the temperature control requirement is low, and energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of energy storage, especially relates to a temperature control system for energy storage. BACKGROUND

[0002] With the rapid development of energy storage technology, energy storage devices are increasingly widely used in the fields of power systems, renewable energy utilization and electric vehicles. However, a large amount of heat is generated during the operation of the energy storage device, especially when the battery pack and electrical equipment are under high load, the sharp rise in temperature can have a serious impact on the performance, life and safety of the device. Therefore, the temperature control problem of the energy storage device has become one of the focuses of current technical research.

[0003] At present, the commonly used temperature control technology mainly includes air cooling technology and liquid cooling technology. The air cooling technology dissipates heat through the heat exchange between the external airflow and the surface of the device, has the advantages of simple structure and low cost, but the heat dissipation efficiency is low, and the dependence on the environmental temperature is high, and the effect is limited in high temperature environment; the liquid cooling technology exchanges heat through the direct contact between the cooling liquid and the device, has high heat dissipation efficiency, but the device power consumption is large, especially in the case of high temperature control demand, the operation energy consumption is further increased, resulting in the reduction of the overall system efficiency. In addition, the existing temperature control system can usually only adopt single air cooling or liquid cooling mode, lacks flexibility, and it is difficult to consider the temperature control demand under different working conditions. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a temperature control system for energy storage, which solves the problem of high power consumption of energy storage temperature control.

[0005] In order to solve the above technical problems, the utility model adopts the technical scheme that:

[0006] A temperature control system for energy storage, comprising an energy storage functional component and a temperature control component, the temperature control component comprising a condenser, an evaporator, a liquid cooling functional component and an air cooling functional component;

[0007] The condenser, the evaporator and the liquid cooling functional component are connected by pipeline to constitute a liquid cooling cycle, the energy storage functional component is at least partially directly connected with the liquid cooling cycle pipeline, and the energy storage functional component is at least partially connected with the evaporator in heat exchange;

[0008] The air cooling functional component is connected with the evaporator in heat exchange to constitute an air cooling cycle.

[0009] In some embodiments, the energy storage functional component comprises electrical equipment and a battery cluster, the battery cluster is directly connected with the liquid cooling cycle pipeline, and the electrical equipment is connected with the evaporator in heat exchange.

[0010] In some embodiments, the liquid cooling functional assembly further comprises a pump body and a heater, which are directly connected with the battery cluster pipeline.

[0011] In some embodiments, the heater is used to regulate the temperature of the battery cluster.

[0012] In some embodiments, the air cooling functional assembly comprises a cooling fan, an air duct and a filter part, the filter part is assembled with the air duct, the filter part is used to filter impurities in the air flow circulating in the air duct, and the cooling fan is arranged in the air duct and used to cool the evaporator.

[0013] In some embodiments, the air cooling functional assembly further comprises a louver door, which is arranged at the end of the air duct and used to connect or block the communication between the air duct and the outside.

[0014] In some embodiments, the louver door is an electric louver door.

[0015] In some embodiments, the liquid cooling functional assembly comprises a compressor and an expansion valve, and the condenser, the compressor, the evaporator and the expansion valve are sequentially connected by pipelines to form a liquid cooling cycle.

[0016] In some embodiments, the liquid cooling functional assembly further comprises a three-way valve, and three ports of the three-way valve are respectively connected with the compressor, the evaporator and at least part of the energy storage functional assembly by pipelines.

[0017] In some embodiments, the three-way valve is an electronic expansion valve.

[0018] The utility model discloses a kind of temperature control systems for energy storage, liquid cooling cycle and air cooling cycle are respectively arranged in temperature control assembly, liquid cooling cycle regulates the temperature of part energy storage functional assembly by two ways respectively, one of which utilizes pipeline to directly utilize coolant and energy storage functional assembly connection to cool down;Another utilizes evaporator and part energy storage functional assembly to exchange heat and regulate;At the same time, evaporator is equipped with air cooling functional assembly to form air cooling cycle, i.e. evaporator can utilize liquid cooling to control temperature and utilize air cooling to control temperature, utilize air cooling to control temperature when temperature control demand is low, reduce energy consumption;Utilize liquid cooling to control temperature when temperature control demand is high, guarantee temperature control effect, accurately regulate energy storage functional assembly. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a kind of temperature control systems for energy storage architecture schematic diagram;

[0020] Figure 2 It is a kind of temperature control systems for energy storage architecture detail drawing;

[0021] REFERENCE NUMERALS:

[0022] 1. Condenser; 2. Evaporator; 3. Electrical equipment; 4. Battery cluster; 5. Pump body; 6. Heater; 7. Cooling fan; 8. Filter part; 9. Louver door; 10. Compressor; 11. Expansion valve; 12. Three-way valve. DETAILED DESCRIPTION

[0023] To illustrate the technical content of the utility model, the purposes and effects achieved, the following will be described in conjunction with the embodiments and the accompanying drawings.

[0024] Please refer to Figure 1 A temperature control system for energy storage, comprising an energy storage functional component and a temperature control component, the temperature control component comprising a condenser 1, an evaporator 2, a liquid cooling functional component and an air cooling functional component;

[0025] The condenser 1, the evaporator 2 and the liquid cooling functional component are connected by pipelines to form a liquid cooling cycle, and the energy storage functional component is at least partially directly connected to the liquid cooling cycle pipeline, and at least part of the energy storage functional component is heat exchange connected with the evaporator 2.

[0026] The air cooling functional component is heat exchange connected with the evaporator 2 to form an air cooling cycle.

[0027] It can be understood that the temperature control system for energy storage is composed of an energy storage functional component and a temperature control component, and the temperature control component includes a condenser 1, an evaporator 2, a liquid cooling functional component and an air cooling functional component. Among them, the condenser 1, the evaporator 2 and the liquid cooling functional component are connected by pipelines to form a liquid cooling cycle, which provides liquid cooling temperature control for the energy storage functional component. Part of the energy storage functional component is directly connected to the liquid cooling cycle pipeline, and the other part is temperature controlled by heat exchange with the evaporator 2. In addition, the air cooling functional component also exchanges heat with the evaporator 2 to form an air cooling cycle.

[0028] Using the above system, liquid cooling cycle and air cooling cycle are respectively arranged in the temperature control component, the liquid cooling cycle regulates the temperature of part of the energy storage functional component in two ways, one of which directly connects the coolant to the energy storage functional component for cooling through the pipeline; the other one regulates the temperature by heat exchange between the evaporator 2 and part of the energy storage functional component; at the same time, the evaporator 2 is equipped with an air cooling functional component to form an air cooling cycle, that is, the evaporator 2 can use liquid cooling for temperature control and air cooling for temperature control, and when the temperature control demand is low, air cooling is used for temperature control to reduce energy consumption; when the temperature control demand is high, liquid cooling is used for temperature control to ensure the temperature control effect and accurately regulate the energy storage functional component.

[0029] In some embodiments, the energy storage functional assembly includes the electrical equipment 3 and the battery cluster 4, and the battery cluster 4 is directly connected with the liquid cooling circulation pipeline; the electrical equipment 3 is in heat exchange connection with the evaporator 2. The energy storage functional assembly includes the electrical equipment 3 and the battery cluster 4. The battery cluster 4 is directly connected with the liquid cooling circulation pipeline and is directly cooled by the coolant; and the electrical equipment 3 is temperature-regulated by heat exchange with the evaporator 2. In view of different heat dissipation requirements of the battery cluster 4 and the electrical equipment 3, liquid cooling direct cooling and evaporator 2 heat exchange temperature regulation are respectively adopted, the system design is optimized, and the temperature regulation efficiency is improved.

[0030] Please refer to Figures 1 to 2 In some embodiments, the liquid cooling functional assembly further includes the pump body 5 and the heater 6, and the pump body 5 and the heater 6 are directly connected with the battery cluster 4 pipeline. The liquid cooling functional assembly further includes the pump body 5 and the heater 6, wherein the pump body 5 provides circulation power for the coolant, and the heater 6 is directly connected with the battery cluster 4 pipeline and is used for temperature regulation of the battery cluster 4. The pump body 5 and the heater 6 are added in the liquid cooling circulation, which can meet the cooling requirement of the battery cluster 4 and also can heat the battery cluster 4 in a low-temperature environment, so as to realize more comprehensive temperature regulation. Specifically, the pump body 5 is a fluorine pump.

[0031] In some embodiments, the heater 6 is used for regulating the temperature of the battery cluster 4. The heater 6 is specially used for regulating the temperature of the battery cluster 4, and the heating function is started in a low-temperature environment to prevent the battery performance from being affected by the low temperature. The battery cluster 4 is precisely heated and regulated by the heater 6, the battery performance in a low-temperature environment is improved, and the reliability and applicability of the energy storage system are improved.

[0032] In some embodiments, the air cooling functional assembly includes the cooling fan 7, the air duct, and the filter part 8, the filter part 8 is assembled with the air duct, the filter part 8 is used for filtering impurities in the air flow circulating in the air duct, and the cooling fan 7 is arranged in the air duct and is used for cooling the evaporator 2. The air cooling functional assembly includes the cooling fan 7, the air duct, and the filter part 8. The filter part 8 is assembled with the air duct and filters impurities in the air flow circulating in the air duct; the cooling fan 7 is installed in the air duct and is used for cooling the evaporator 2. By arranging the filter part 8 and the cooling fan 7, the air cooling functional assembly can effectively protect the evaporator 2 from impurities and efficiently discharge heat, so as to ensure stable operation of the air cooling circulation.

[0033] In some embodiments, the air cooling functional assembly further comprises a louver 9 arranged at the end of the air duct and used for connecting or blocking the air duct with the outside; the air cooling functional assembly further comprises a louver 9 arranged at the end of the air duct; the louver 9 is used for controlling the connection or isolation of the air duct with the outside; through the control function of the louver 9, the ventilation state of the air duct can be adjusted in different use environments, the system adaptability is improved, and unnecessary energy loss is avoided; specifically, the louver 9 is an electric louver 9.

[0034] In some embodiments, the liquid cooling functional assembly comprises a compressor 10 and an expansion valve 11; the condenser 1, the compressor 10, the evaporator 2 and the expansion valve 11 are sequentially connected by pipelines to form a liquid cooling cycle; the liquid cooling functional assembly is sequentially connected by the condenser 1, the compressor 10, the evaporator 2 and the expansion valve 11 to form a liquid cooling cycle, which is used for cooling the energy storage functional assembly; the high-efficiency heat exchange capacity of the liquid cooling cycle is used to provide precise cooling for the energy storage functional assembly, so that the stable operation of the energy storage functional assembly under high load conditions is ensured.

[0035] In some embodiments, the liquid cooling functional assembly further comprises a three-way valve 12; three ports of the three-way valve 12 are respectively connected by pipelines to the compressor 10, the evaporator 2 and at least part of the energy storage functional assembly; through the three-way valve 12, the flow direction of the coolant is flexibly controlled, the operation efficiency of the liquid cooling system is improved, and various temperature control requirements are met.

[0036] In some embodiments, the three-way valve 12 is an electronic expansion valve 11; the electronic expansion valve 11 further improves the precise temperature control capability of the liquid cooling cycle and improves the response speed and stability of the system.

[0037] Please refer to Figure 1 , the embodiment one of the utility model discloses:

[0038] A temperature control system for energy storage comprises an energy storage functional assembly and a temperature control assembly; the temperature control assembly comprises a condenser 1, an evaporator 2, a liquid cooling functional assembly and an air cooling functional assembly.

[0039] The condenser 1, the evaporator 2 and the liquid cooling functional assembly are connected by pipelines to form a liquid cooling cycle; the battery cluster 4 in the energy storage functional assembly is directly connected by a pipeline to the liquid cooling cycle; the electrical equipment 3 in the energy storage functional assembly is connected by heat exchange to the evaporator 2.

[0040] Specifically, the liquid cooling functional assembly comprises a compressor 10, an expansion valve 11 and an electronic expansion valve; three ports of the three-way valve 12 of the electronic expansion valve are respectively connected by pipelines to the compressor 10, the evaporator 2 and the battery cluster 4.

[0041] The air-cooled functional assembly is in heat exchange connection with the evaporator 2 to form an air-cooled cycle, and the air-cooled functional assembly comprises an electric louver door 9, a filter part 8 (which can be filter cotton or a filter screen) and an air duct, the electric louver door 9 is arranged at an air duct inlet and is used for connecting or blocking the air duct according to instructions, that is, selecting to use liquid cooling or air cooling according to requirements, and when liquid cooling cycle is completely utilized, the air-cooled cycle is completely closed by using the louver to avoid the system from being affected by external temperature.

[0042] In summary, the temperature control system for energy storage provided by the utility model realizes precise temperature control of energy storage functional assemblies (including battery clusters and electrical equipment) through the combination of liquid cooling cycle and air-cooled cycle. The liquid cooling cycle directly provides cooling for the battery cluster by using the high-efficiency heat exchange capacity of the compressor, expansion valve and electronic expansion valve, and performs heat exchange regulation and control with the electrical equipment through the evaporator. At the same time, the system is equipped with a heater in a low-temperature environment to provide heating for the battery cluster, ensuring its reliability in extreme environments. The air-cooled cycle realizes flexible external air regulation by setting a cooling fan, a filter part and an electric louver door, which can reduce energy consumption by using air cooling when the temperature control demand is low, and can also close the air-cooled cycle when needed to avoid the influence of external temperature, fully exerting the liquid cooling temperature control effect. In addition, the filter part effectively protects the system from impurities, and the automatic control of the electric louver door improves the intelligent level of the system. The overall design optimizes energy consumption while ensuring efficient temperature control, enhancing the environmental adaptability and operation stability of the energy storage system.

[0043] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent transformation or direct or indirect application in related technical fields based on the content of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. A temperature control system for energy storage, characterized by: The energy storage functional component and the temperature control component, the temperature control component includes a condenser, an evaporator, a liquid cooling functional component and an air cooling functional component; The condenser, the evaporator and the liquid cooling functional component are connected to form a liquid cooling cycle, the energy storage functional component is at least partially directly connected to the liquid cooling cycle pipeline, and the energy storage functional component is at least partially connected to the evaporator in heat exchange mode; The air cooling functional component is connected to the evaporator in heat exchange mode to form an air cooling cycle.

2. The temperature control system for energy storage of claim 1, wherein: The energy storage functional component includes an electrical device and a battery cluster, the battery cluster is directly connected to the liquid cooling cycle pipeline, and the electrical device is connected to the evaporator in heat exchange mode.

3. The temperature control system for energy storage of claim 2, wherein: The liquid cooling functional component further includes a pump body and a heater, and the pump body and the heater are directly connected to the battery cluster pipeline.

4. The temperature control system for energy storage of claim 3, wherein: The heater is used to regulate the temperature of the battery cluster.

5. The temperature control system for energy storage of claim 1, wherein: The air cooling functional component includes a cooling fan, an air duct and a filter part, the filter part is assembled to the air duct, the filter part is used to filter impurities in the air flow in the air duct, and the cooling fan is arranged in the air duct and used to cool the evaporator.

6. The temperature control system for energy storage of claim 5, wherein: The air cooling functional component further includes a louver door, the louver door is arranged at the end of the air duct and used to connect or block the communication between the air duct and the outside.

7. The temperature control system for energy storage of claim 6, wherein: The louver door is an electric louver door.

8. The temperature control system for energy storage of claim 1, wherein: The liquid cooling functional component includes a compressor and an expansion valve, and the condenser, the compressor, the evaporator and the expansion valve are sequentially connected to form a liquid cooling cycle.

9. The temperature control system for energy storage of claim 8, wherein: The liquid cooling functional component further includes a three-way valve, and three ports of the three-way valve are respectively connected to the compressor, the evaporator and at least part of the energy storage functional component through pipelines.

10. The temperature control system for energy storage of claim 9, wherein: The three-way valve is an electronic expansion valve.

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