Energy storage battery temperature control system and photovoltaic system

Abstract

The application relates to the photovoltaic energy storage technical field and discloses an energy storage battery temperature control system and a photovoltaic system. The temperature control system comprises an air conditioner heat pump host, a terminal indoor unit and an energy storage battery. The terminal indoor unit is connected with the air conditioner heat pump host through a heat exchange medium pipeline. The energy storage battery is provided with a heat exchange device. The heat exchange device is connected with the air conditioner heat pump host through the heat exchange medium pipeline. The air conditioner heat pump host is used for conveying heat exchange medium for realizing temperature reduction to the terminal indoor unit and / or the heat exchange device when operating in a refrigeration mode, and the air conditioner heat pump host is also used for conveying heat exchange medium for realizing temperature rise to the terminal indoor unit and / or the heat exchange device when operating in a heating mode. The photovoltaic system comprises a photovoltaic power generation module, an inverter, a tri-generation air heat pump and the energy storage battery. The energy storage battery temperature control system and the photovoltaic system are used, so that the energy storage utilization rate of the system can be improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic energy storage technology, and in particular to an energy storage battery temperature control system and a photovoltaic system. Background Technology

[0002] During operation, the performance and lifespan of energy storage batteries depend on ambient temperature. High temperatures intensify internal chemical reactions, increasing the risk of thermal runaway and accelerating battery aging. Conversely, low temperatures increase internal resistance, reduce discharge capacity, and may even pose safety hazards. Existing energy storage systems typically incorporate additional temperature control systems to maintain batteries within a suitable operating temperature range.

[0003] However, when adjusting the temperature of the energy storage battery by configuring an additional temperature control system, the temperature control system needs to be designed independently, and the temperature control process consumes the battery's own energy, resulting in a reduction in the system's effective energy storage utilization rate. Utility Model Content

[0004] In view of this, this application provides an energy storage battery temperature control system and a photovoltaic system, which can improve the effective energy storage utilization rate of the system.

[0005] One embodiment of this application provides an energy storage battery temperature control system. The temperature control system includes: an air conditioning heat pump main unit, a terminal indoor unit, and an energy storage battery. The terminal indoor unit is connected to the air conditioning heat pump main unit via a heat exchange medium pipeline. The energy storage battery is equipped with a heat exchange device, which is connected to the air conditioning heat pump main unit via the heat exchange medium pipeline. The air conditioning heat pump main unit is used to deliver a cooling heat exchange medium to the terminal indoor unit and / or the heat exchange device during cooling mode, and also to deliver a heating heat exchange medium to the terminal indoor unit and / or the heat exchange device during heating mode.

[0006] This application provides an energy storage battery temperature control system that integrates an air conditioning heat pump host, a terminal indoor unit, and an energy storage battery into one unit. By using the air conditioning heat pump host in either cooling or heating mode, a heat exchange medium is delivered to the terminal indoor unit and / or heat exchange device to achieve temperature regulation of the energy storage battery. This eliminates the need for a separate temperature control system for the energy storage battery, reduces manufacturing costs, and improves the energy storage utilization rate of the temperature control system.

[0007] In some embodiments of this application, the heat exchange medium pipeline is a fluorine pipeline, including a fluorine gas pipeline and a fluorine liquid pipeline, and the heat exchange device and the terminal indoor unit are connected in parallel between the fluorine gas pipeline and the fluorine liquid pipeline.

[0008] In some embodiments of this application, the heat exchange medium pipeline is a circulating water pipeline, and the heat exchange device and the terminal indoor unit are connected in parallel on the circulating water pipeline.

[0009] In some embodiments of this application, the temperature control system further includes a circulating water pump, which is used to realize the circulating flow of water in the circulating water circuit.

[0010] In some embodiments of this application, the energy storage battery includes a battery pack, and there are multiple battery packs. There are also multiple heat exchange devices, which are connected in parallel and interspersed with the multiple battery packs.

[0011] In some embodiments of this application, the energy storage battery includes a battery pack, and there are multiple battery packs. There are also multiple heat exchange devices, which are connected in series and surround the multiple battery packs.

[0012] In some embodiments of this application, the energy storage battery includes a battery pack, and the number of battery packs is multiple, with the multiple battery packs spaced apart along a first direction. The number of heat exchange devices is also multiple, and the multiple heat exchange devices are connected in series and at least partially arranged between two adjacent battery packs.

[0013] In some embodiments of this application, the heat exchange device is made of an aluminum plate or a copper plate.

[0014] In some embodiments of this application, the heat exchange device is provided with a temperature measuring element, which is used to detect the temperature inside the heat exchange device.

[0015] One embodiment of this application also provides a photovoltaic system. The photovoltaic system includes a photovoltaic power generation module, an inverter, a combined cooling, heating, and power (CCHP) air heat pump, and an energy storage battery. The photovoltaic power generation module is used to convert solar energy into direct current (DC). The inverter includes an input terminal and an output terminal. The photovoltaic power generation module is electrically connected to the input terminal. The inverter is used to convert the DC power into alternating current (AC). The CCHP air heat pump is electrically connected to the output terminal. The CCHP air heat pump includes an air conditioning heat pump main unit, a terminal indoor unit, and a hot water module. The terminal indoor unit and the hot water module are both connected to the air conditioning heat pump main unit via heat exchange medium pipelines. The energy storage battery is equipped with a heat exchange device. The heat exchange device is connected to the air conditioning heat pump main unit via the heat exchange medium pipelines. The energy storage battery is used to store the DC power. The air conditioning heat pump unit is used to deliver a heat exchange medium for cooling to the terminal indoor unit and / or the heat exchange device when operating in cooling mode. The air conditioning heat pump unit is also used to deliver a heat exchange medium for heating to the terminal indoor unit and / or the heat exchange device when operating in heating mode. The air conditioning heat pump unit is also used to deliver the heat exchange medium for heating to the hot water module when operating in the cooling mode and / or the heating mode.

[0016] This application provides a photovoltaic system in which the photovoltaic power generation module converts solar energy into direct current (DC). The DC power can be directly converted into alternating current (AC) by an inverter and then used to power a combined cooling, heating, and hot water system (CCHP) air heat pump. This system drives the CCHP air heat pump to exchange heat with the terminal indoor unit, the heat exchange device, and / or the hot water module, thereby achieving cooling, heating, hot water supply, and temperature control of the heat exchange device. This eliminates the need for an additional cooling or heating system for the energy storage battery, reducing manufacturing costs and improving the energy storage utilization rate of the photovoltaic system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an energy storage battery temperature control system in one embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the structure of the energy storage battery temperature control system in another embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the structure of the energy storage battery temperature control system in another embodiment of this application.

[0020] Figure 4 This is a schematic diagram of the structure of the energy storage battery temperature control system in another embodiment of this application.

[0021] Figure 5 This is a diagram illustrating an application scenario of a photovoltaic system in another embodiment of this application.

[0022] Explanation of main component symbols 100-Temperature control system; 10-Air conditioning heat pump main unit; 20-Terminal indoor unit; 30-Energy storage battery; 301-Battery pack; 31-Heat exchange device; 32-Temperature sensor; 40, 40a, 40b-Heat exchange medium pipeline; 401-Fluorine gas pipeline; 402-Fluorine liquid pipeline; 403-Circulating water pump; 200-Photovoltaic system; 50-Photovoltaic power generation module; 60-Inverter; 600-Input terminal; 601-Output terminal; 70-Tri-generation air heat pump; 701-Hot water module.

[0023] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0024] 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.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0026] During operation, the performance and lifespan of energy storage batteries depend on ambient temperature. High temperatures intensify internal chemical reactions, increasing the risk of thermal runaway and accelerating battery aging. Conversely, low temperatures increase internal resistance, reduce discharge capacity, and may even pose safety hazards. Existing energy storage systems typically incorporate additional temperature control systems to dissipate heat from the batteries in summer and heat them in winter, thus regulating the battery's operating temperature within a suitable range.

[0027] However, when adjusting the temperature of the energy storage battery by configuring an additional temperature control system, the temperature control system needs to be designed independently, and the temperature control process consumes the battery's own energy, resulting in a reduction in the system's effective energy storage utilization rate.

[0028] Therefore, in order to solve the above-mentioned technical problems, the embodiments of this application integrate the air conditioning heat pump host, the terminal indoor unit and the energy storage battery in the temperature control system into one unit, and deliver the heat exchange medium to the terminal indoor unit and / or heat exchange device through the cooling mode or heating mode of the air conditioning heat pump host to achieve temperature regulation of the energy storage battery. There is no need to equip the energy storage battery with a separate temperature regulation system, which reduces the manufacturing cost and improves the energy storage utilization rate of the temperature control system.

[0029] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] Please also refer to Figures 1 to 4 One embodiment of this application discloses an energy storage battery temperature control system 100. The temperature control system 100 includes: an air conditioning heat pump main unit 10, a terminal indoor unit 20, and an energy storage battery 30. The terminal indoor unit 20 is connected to the air conditioning heat pump main unit 10 via a heat exchange medium pipeline 40. The energy storage battery 30 is equipped with a heat exchange device 31, which is connected to the air conditioning heat pump main unit 10 via the heat exchange medium pipeline 40. The air conditioning heat pump main unit 10 is used to supply a cooling heat exchange medium to the terminal indoor unit 20 and / or the heat exchange device 31 during cooling mode, and also to supply a heating heat exchange medium to the terminal indoor unit 20 and / or the heat exchange device 31 during heating mode.

[0031] In some embodiments of this application, by integrating the air conditioning heat pump host 10, the terminal indoor unit 20 and the energy storage battery 30 in the temperature control system 100 into one unit, and further delivering the heat exchange medium to the terminal indoor unit 20 and / or the heat exchange device 31 through the cooling mode or heating mode of the air conditioning heat pump host 10, the temperature of the energy storage battery 30 is regulated. There is no need to equip the energy storage battery 30 with a separate temperature regulation system, which reduces the manufacturing cost and improves the energy storage utilization rate of the temperature control system 100.

[0032] Understandably, in practical applications, the energy storage battery 30 can be installed inside the energy storage battery compartment, and the heat exchange device 31 can be installed inside the energy storage battery compartment to exchange heat with the energy storage battery 30. By controlling the temperature of the heat exchange device 31, the temperature of the energy storage battery 30 can be controlled. In practical applications, during summer, the cooling mode of the air conditioning heat pump unit 10 can be used to deliver a cooling heat exchange medium to the heat exchange device 31, or to the terminal indoor unit 20, or simultaneously to the heat exchange device 31, thus cooling the energy storage battery 30 in summer. During winter, the heating mode of the air conditioning heat pump unit 10 can be used to deliver a heating heat exchange medium to the heat exchange device 31, or to the terminal indoor unit 20, or simultaneously to the heat exchange device 31, thus heating the energy storage battery 30 in winter. Specifically, while cooling or heating the terminal indoor unit 20 through the air conditioning heat pump host 10, the energy storage battery 30 can also be cooled or heated. The temperature control system 100 of the energy storage battery 30 is integrated with the air conditioning heat pump system into one system, eliminating the need for an additional cooling or heating system for the energy storage battery 30, reducing manufacturing costs and improving the energy storage utilization rate of the temperature control system 100.

[0033] In practical applications, the air conditioning heat pump unit 10 may include a refrigerant system and / or a water system, wherein the refrigerant system achieves heat exchange through refrigerant circulation, and the water system achieves heat exchange through water circulation.

[0034] like Figure 2 As shown, if the air conditioning heat pump unit 10 includes a refrigerant circuit system, then the heat exchange medium pipeline 40 is a refrigerant circuit 40a. The refrigerant circuit 40a includes a refrigerant gas pipeline 401 and a refrigerant liquid pipeline 402. The heat exchange device 31 and the terminal indoor unit 20 are connected in parallel between the refrigerant gas pipeline 401 and the refrigerant liquid pipeline 402. It can be understood that in other embodiments, the heat exchange device 31 and the terminal indoor unit 20 may also be connected in series.

[0035] The refrigerant gas pipe 401 is mainly used to transport the heat exchange medium in its vapor state, while the refrigerant liquid pipe 402 is mainly used to transport the heat exchange medium in its liquid state. By connecting the heat exchange device 31 and the terminal indoor unit 20 in parallel between the refrigerant gas pipe 401 and the refrigerant liquid pipe 402, on the one hand, the heat exchange device 31 and the terminal indoor unit 20 can operate independently. Cooling or heating can be performed separately on either the heat exchange device 31 or the terminal indoor unit 20 according to temperature control requirements, improving temperature control flexibility. On the other hand, the preferred flow direction of the refrigerant can be adjusted according to the individual temperature control requirements of the heat exchange device 31 and the terminal indoor unit 20, reducing capacity loss. Furthermore, the length of the refrigerant circuit 40a can be reduced, lowering installation complexity.

[0036] like Figure 3 As shown, the heat exchange medium pipeline 40 is a circulating water pipeline 40b, and the heat exchange device 31 and the terminal indoor unit 20 are connected in parallel on the circulating water pipeline 40b.

[0037] In some embodiments of this application, by connecting the heat exchange device 31 and the terminal indoor unit 20 in parallel on the circulating water circuit 40b, on the one hand, the heat exchange device 31 and the terminal indoor unit 20 can operate independently, and either the heat exchange device 31 or the terminal indoor unit 20 can be cooled or heated separately according to temperature control requirements, improving temperature control flexibility. On the other hand, the preferred flow direction of the refrigerant can be adjusted according to the respective temperature control requirements of the heat exchange device 31 and the terminal indoor unit 20, reducing capacity loss. Furthermore, the length of the circulating water circuit 40b can be reduced, lowering installation complexity.

[0038] In some embodiments of this application, the temperature control system 100 further includes a circulating water pump 403. The circulating water pump 403 is used to realize the water circulation in the circulating water path 40b, which facilitates precise control of the water flow rate, avoids inefficient natural convection driven by temperature difference, reduces the energy consumption of the temperature control system 100 for heating and cooling, improves the temperature control of the heat exchange device 31, and thus improves the performance and lifespan of the energy storage battery 30. Figure 3 It can be seen that the circulating water path 40b performs refrigerant-water heat exchange within the air conditioning heat pump unit 10, meaning the refrigerant-water heat exchanger is located inside the air conditioning heat pump unit 10. It is understood that in other embodiments, the refrigerant-water heat exchanger can also be located outside the air conditioning heat pump unit 10, thus connecting the air conditioning heat pump unit 10 and the refrigerant-water heat exchanger via a refrigerant path, and connecting the refrigerant-water heat exchanger and the terminal indoor unit 20 via a water path.

[0039] Further integration Figure 1As shown, the energy storage battery 30 includes multiple battery packs 301. The multiple battery packs 301 are connected in parallel, and each battery pack 301 may include multiple cells connected in series. The number of heat exchange devices 31 is also multiple. The multiple heat exchange devices 31 are connected in parallel and interspersed with the multiple battery packs 301.

[0040] In some embodiments of this application, by interleaving multiple heat exchange devices 31 with multiple battery packs 301 in the energy storage battery 30, it can be ensured that the energy storage battery 30 is uniformly cooled or heated by the heat exchange devices 31, avoiding uneven temperature distribution among the multiple battery packs 301 and improving the performance of the energy storage battery 30.

[0041] Further integration Figure 2 As shown, the energy storage battery 30 includes multiple battery packs 301. The number of heat exchange devices 31 is also multiple. These multiple heat exchange devices 31 are connected in series and surround the multiple battery packs 301.

[0042] In some embodiments of this application, by connecting multiple battery packs 301 of the energy storage battery 30 in series and multiple heat exchange devices 31 in series, and surrounding the energy storage battery 30 with the multiple heat exchange devices 31 in series, uniform cooling or heating of the energy storage battery 30 can be achieved, avoiding uneven temperature distribution of the energy storage battery 30 and improving the performance of the energy storage battery 30.

[0043] In some other embodiments, the multiple battery packs 301 of the energy storage battery 30 can also be arranged in parallel, and the multiple heat exchange devices 31 can be arranged in series. The multiple heat exchange devices 31 arranged in series are arranged around the energy storage battery 30 to achieve uniform cooling or heating of the energy storage battery 30, avoid uneven temperature distribution of the energy storage battery 30, and improve the performance of the energy storage battery 30.

[0044] For example, if the energy storage battery 30 has two battery packs 301, the two battery packs 301 are connected in parallel. Multiple heat exchange devices 31 connected in series surround the two battery packs 301, thereby achieving uniform heating and cooling of the two battery packs 301 of the energy storage battery 30 and improving the performance of the energy storage battery 30.

[0045] Further integration Figure 3 and Figure 4 As shown, the energy storage battery 30 has multiple battery packs 301, which are spaced apart along a first direction. The heat exchange device 31 has multiple heat exchange devices connected in series and at least partially arranged between two adjacent battery packs 301.

[0046] In some embodiments of this application, by connecting multiple heat exchange devices 31 in series and at least partially distributing them between two adjacent battery packs 301, it is further ensured that the energy storage battery 30 is uniformly cooled or heated by the heat exchange devices 31, avoiding uneven temperature distribution among multiple energy storage batteries 30 and improving the performance of the energy storage battery 30.

[0047] In some embodiments of this application, the heat exchange device 31 is made of an aluminum plate or a copper plate.

[0048] In some embodiments of this application, the heat exchange medium in the heat exchange device 31 flows within an aluminum plate or a copper plate, and the entire aluminum plate or copper plate is in close contact with the energy storage battery 30 in the energy storage battery compartment, so that the entire aluminum plate or copper plate exchanges heat with the energy storage battery 30, thereby achieving temperature control of the energy storage battery 30.

[0049] In some embodiments of this application, the heat exchange device 31 is provided with a temperature measuring element 32. The temperature measuring element 32 is used to detect the temperature inside the heat exchange device 31.

[0050] In some embodiments of this application, the temperature measuring element 32 can be a temperature sensor installed inside the heat exchange device 31 to detect the temperature inside the heat exchange device 31, which is beneficial for determining the problem of the energy storage battery 30 based on the temperature inside the heat exchange device 31.

[0051] For example, in summer, the opening temperature of the heat exchange device 31 in the energy storage battery compartment can be preset to 30°C. When the air conditioning heat pump host 10 cools the terminal indoor unit 20 and the temperature measuring element 32 detects that the temperature inside the heat exchange device 31 reaches 30°C, the heat pump air conditioning host automatically opens the heat exchange medium pipeline 40 connected to the heat exchange device 31 through valve control, so that the heat exchange medium enters the heat exchange device 31 in the energy storage battery compartment to cool the energy storage battery 30. When the temperature inside the heat exchange device 31 drops to 25°C, the heat pump air conditioning host automatically closes the heat exchange medium pipeline 40 connected to the heat exchange device 31 through valve control, so that the heat exchange medium stops entering the heat exchange device 31 in the energy storage battery compartment, thereby stopping the cooling of the heat exchange device 31. In winter, the opening temperature of the heat exchange device 31 in the energy storage battery compartment can be preset to 8°C. When the air conditioning heat pump host 10 heats the terminal indoor unit 20, and the temperature sensor 32 detects that the temperature inside the heat exchange device 31 has dropped to 8°C, the heat pump air conditioning host automatically opens the heat exchange medium pipeline 40 connected to the heat exchange device 31 through valve control, allowing the heat exchange medium to enter the heat exchange device 31 in the energy storage battery compartment to heat the energy storage battery 30. When the temperature inside the heat exchange device 31 rises to 20°C, the heat pump air conditioning host automatically closes the heat exchange medium pipeline 40 connected to the heat exchange device 31 through valve control, stopping the heat exchange medium from entering the heat exchange device 31 in the energy storage battery compartment, thereby stopping the heating of the heat exchange device 31. Real-time monitoring of the temperature inside the heat exchange device 31 by the temperature sensor 32 facilitates better temperature control of the energy storage battery 30, improves the performance of the energy storage battery 30, and thus ensures that the energy storage battery 30 can effectively store energy.

[0052] Please also refer to Figure 5An embodiment of this application also proposes a photovoltaic system 200. The photovoltaic system 200 includes a photovoltaic power generation module 50, an inverter 60, a combined cooling, heating, and power (CCHP) air-cooled heat pump 70, and an energy storage battery 30. The photovoltaic power generation module 50 is used to convert solar energy into direct current (DC). The inverter 60 includes an input terminal 600 and an output terminal 601. The photovoltaic power generation module 50 is electrically connected to the input terminal 600. The inverter 60 is used to convert the DC power into alternating current (AC). The CCHP air-cooled heat pump 70 is electrically connected to the output terminal 601. The CCHP air-cooled heat pump 70 includes an air conditioning heat pump main unit 10, a terminal indoor unit 20, and a hot water module 701. The terminal indoor unit 20 and the hot water module 701 are both connected to the air conditioning heat pump main unit 10 via a heat exchange medium pipeline 40. The energy storage battery 30 is equipped with a heat exchange device 31. The heat exchange device 31 is connected to the air conditioning heat pump main unit 10 via the heat exchange medium pipeline 40. The energy storage battery 30 is used to store the DC power. The air conditioning heat pump host 10 is used to deliver a heat exchange medium to the terminal indoor unit 20 and / or the heat exchange device 31 to achieve cooling when operating in cooling mode. The air conditioning heat pump host 10 is also used to deliver a heat exchange medium to the terminal indoor unit 20 and / or the heat exchange device 31 to achieve heating when operating in heating mode. The air conditioning heat pump host 10 is also used to deliver the heat exchange medium to the hot water module 701 to achieve heating when operating in the cooling mode and / or the heating mode.

[0053] In some embodiments of this application, the photovoltaic power generation module 50 converts solar energy into direct current, which can then be directly converted into alternating current by the inverter 60, and then power the triple-generation air heat pump 70. This enables the triple-generation air heat pump 70 to exchange heat with the terminal indoor unit 20, the heat exchange device 31, and / or the hot water module, thereby achieving cooling, heating, hot water supply, and temperature control of the heat exchange device 31. This eliminates the need for an additional cooling or heating system for the energy storage battery 30, reducing manufacturing costs and improving the energy storage utilization rate of the photovoltaic system 200.

[0054] In other alternative embodiments, the inverter 60 can also receive standard AC power from the grid and power the combined cooling, heating, and power supply (CCHP) air heat pump 70 to drive the CCHP air heat pump 70 to operate, avoiding the problem that the CCHP air heat pump 70 cannot operate due to the photovoltaic power generation module 50 being unable to supply power, thus improving the operational flexibility of the photovoltaic system 200.

[0055] In some embodiments of this application, excess DC power converted by the photovoltaic power generation module 50 can be directly stored in the energy storage battery 30 without going through the inverter 60, thereby improving the effective energy storage of the energy storage battery 30.

[0056] It is understood that in other embodiments, the arrangement of the heat exchange device 31 and the battery pack 301 in the energy storage battery 30 can also be... Figures 2-4 Alternatively, the hot water module 701 may be installed inside the air conditioning heat pump unit 10 in other embodiments.

[0057] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and substance of the technical solutions of this application.

Claims

1. An energy storage battery temperature control system, comprising: The temperature control system includes: Air conditioning heat pump unit; The terminal indoor unit is connected to the air conditioning heat pump main unit through a heat exchange medium pipeline; The energy storage battery is equipped with a heat exchange device, which is connected to the air conditioning heat pump unit through the heat exchange medium pipeline. The air conditioning heat pump unit is used to deliver a heat exchange medium to the terminal indoor unit and / or heat exchange device to achieve cooling when operating in cooling mode, and the air conditioning heat pump unit is also used to deliver a heat exchange medium to the terminal indoor unit and / or heat exchange device to achieve heating when operating in heating mode.

2. The energy storage battery temperature control system of claim 1, wherein, The heat exchange medium pipeline is a fluorine pipeline, including a fluorine gas pipeline and a fluorine liquid pipeline, and the heat exchange device and the terminal indoor unit are connected in parallel between the fluorine gas pipeline and the fluorine liquid pipeline.

3. The energy storage battery temperature control system of claim 1, wherein, The heat exchange medium pipeline is a circulating water pipeline, and the heat exchange device and the terminal indoor unit are connected in parallel on the circulating water pipeline.

4. The energy storage battery temperature control system of claim 3, wherein, The temperature control system also includes a circulating water pump, which is used to realize the circulation of water in the circulating water circuit.

5. The temperature control system according to claim 1, characterized in that, The energy storage battery includes multiple battery packs and multiple heat exchange devices, which are arranged in parallel and interspersed with the multiple battery packs.

6. The temperature control system according to claim 1, characterized in that, The energy storage battery includes multiple battery packs and multiple heat exchange devices, which are connected in series and surround the multiple battery packs.

7. The temperature control system according to claim 1, characterized in that, The energy storage battery includes multiple battery packs, which are spaced apart along a first direction. The heat exchange devices are also multiple, connected in series, and at least partially arranged between two adjacent battery packs.

8. The temperature control system according to claim 1, characterized in that, The heat exchange device is made of aluminum or copper plate.

9. The temperature control system according to claim 1, characterized in that, The heat exchange device is equipped with a temperature measuring element, which is used to detect the temperature inside the heat exchange device.

10. A photovoltaic system, characterized in that, include: Photovoltaic power generation modules are used to convert solar energy into direct current (DC). An inverter includes an input terminal and an output terminal, wherein the photovoltaic power generation module is electrically connected to the input terminal and is used to convert the direct current to alternating current. The three-phase air heat pump is electrically connected to the output end. The three-phase air heat pump includes an air conditioning heat pump main unit, a terminal indoor unit, and a hot water module. The terminal indoor unit and the hot water module are both connected to the air conditioning heat pump main unit through heat exchange medium pipelines. The energy storage battery is equipped with a heat exchange device, which is connected to the air conditioning heat pump unit through the heat exchange medium pipeline. The energy storage battery is used to store the DC power. The air conditioning heat pump unit is used to deliver a heat exchange medium for cooling to the terminal indoor unit and / or the heat exchange device when operating in cooling mode. The air conditioning heat pump unit is also used to deliver a heat exchange medium for heating to the terminal indoor unit and / or the heat exchange device when operating in heating mode. The air conditioning heat pump unit is also used to deliver the heat exchange medium for heating to the hot water module when operating in the cooling mode and / or the heating mode.

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