Double-loop cold and heat simultaneous supply system

Abstract

The invention discloses a double-loop cold and heat simultaneous supply system which comprises a heat extraction device, a heating device, an energy storage power station of an electric power system and a battery module of the electric power system, the input end of the heat extraction device is connected with a hot water loop, and the output end of the heat extraction device is connected with a cold water loop; the input end of the heating device is connected with the cold water loop, and the output end of the heating device is connected with the hot water loop; the hot water loop is connected with the energy storage power station; the cold water loop is connected with the battery module; wherein the heat removal device is used for improving the working power of the heat removal device under the condition that the heat dissipating capacity of the battery module is greater than the heat required by the energy storage power station, so that the cold water loop is used for dissipating heat of the battery module; and the heating device is used for improving the working power of the heating device under the condition that the heat dissipating capacity in the battery module is smaller than the heat required by the energy storage power station, so that the hot water loop provides heat for the energy storage power station.

Description

Technical Field

[0001] The present application relates to the field of energy-saving technology, and in particular to a dual-loop cooling and heating system. Background Art

[0002] As the proportion of clean energy gradually increases, energy storage plays a vital role in the power generation side, grid side and user side of the power system. Electrochemical energy storage has a rapid penetration rate due to its advantages such as high energy density, flexible application and fast response. Lithium-ion batteries are the mainstream technical route for new energy storage. As the core component of electrochemical energy storage, batteries have a large risk of thermal runaway. From a safety perspective, energy storage thermal management is extremely important. At present, the more mature technical routes for energy storage thermal management are air cooling and liquid cooling. Liquid cooling has the advantages of more efficient heat dissipation, temperature balance, safety and reliability, space saving, and environmental protection and energy saving, and its proportion is constantly increasing. However, in low temperature environments, the power characteristics of lithium-ion batteries deteriorate, the cycle life decays, and the available capacity decreases. At the same time, they face problems such as difficulty in low temperature charging and easy lithium precipitation during charging. These factors directly cause the inefficiency of energy storage power stations. How to heat the energy storage power station so that it can reach the ideal operating temperature in a low temperature environment is the key to alleviating the performance degradation of batteries in low temperature environments. The above two factors require that an energy storage power station needs both an efficient cooling system to ensure the safe operation of the battery and a heating system to alleviate the performance degradation of the battery in a low temperature environment to extend its life and significantly reduce the energy utilization efficiency.

[0003] There is a lack of a system that can meet both the heating and cooling needs of the power system in the relevant technologies, and no effective solution has yet been found. Summary of the invention

[0004] The present application provides a dual-loop heating and cooling system to at least solve the problem in the related art that there is a lack of a system that can meet both the heating demand and the cooling demand of the power system.

[0005] According to one embodiment of the embodiments of the present application, a dual-loop cold and hot supply system is provided, comprising: a heat removal device, a heating device, an energy storage power station of an electric power system, and a battery module of the electric power system, wherein the input end of the heat removal device is connected to the hot water loop, and the output end of the heat removal device is connected to the cold water loop; the input end of the heating device is connected to the cold water loop, and the output end of the heating device is connected to the hot water loop; the hot water loop is connected to the energy storage power station; the cold water loop is connected to the battery module; wherein the heat removal device is used to increase the working power of the heat removal device when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, so that the cold water loop dissipates heat for the battery module; the heating device is used to increase the working power of the heating device when the heat dissipation in the battery module is less than the heat required by the energy storage power station, so that the hot water loop provides heat for the energy storage power station.

[0006] In an exemplary embodiment, the heat dissipation device also includes: a hot water pump connected in series with the hot water loop; a first plate heat exchanger connected in series with the hot water pump; a cooling water pump connected in series with the first plate heat exchanger; a cooling tower connected in series with the cooling water pump; and an electric refrigerator connected in series with the cooling tower, wherein the electric refrigerator is respectively connected in series with the cold water loop and the first plate heat exchanger.

[0007] In an exemplary embodiment, the electric refrigerator further includes: a first evaporator connected in series with the cold water loop and the first plate heat exchanger respectively; and a first condenser connected in parallel with the first evaporator.

[0008] In an exemplary embodiment, the battery module further includes: a cooling device, wherein the cooling device is used to obtain excess heat in the battery module and heat the water in the hot water loop based on the excess heat when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, wherein the excess heat is determined based on the difference between the heat dissipation of the battery module and the heat required by the energy storage power station.

[0009] In an exemplary embodiment, it includes: when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the hot water pump is also used to obtain water in the hot water loop and transfer the water in the hot water loop to the first plate heat exchanger; the first plate heat exchanger is also used to exchange heat between the water in the hot water loop and the cooling water generated by the cooling tower to cool the water in the hot water loop and transfer the cooled water to the first evaporator; the first evaporator is used to receive the cooled water and cool the cooled water, and transfer the secondary cooled water to the cold water loop to dissipate heat from the battery module according to the secondary cooled water in the cold water loop.

[0010] In an exemplary embodiment, it includes: when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the cooling tower is also used to generate cooling water; the cooling water pump is also used to transfer the cooling water to the first condenser; the first condenser is also used to absorb the heat of the hot water loop according to the cooling water, and send the cooling water after absorbing the heat to the cooling tower, so that the cooling tower dissipates the heat of the hot water loop into the atmosphere.

[0011] In an exemplary embodiment, the heating device further includes: a cold water pump connected in series with the cold water loop; a second plate heat exchanger connected in series with the cold water pump; and an electric heat pump connected in series with the second plate heat exchanger.

[0012] In an exemplary embodiment, the electric heat pump further includes: a second condenser connected in series with the hot water loop and the second plate heat exchanger respectively; a second evaporator connected in parallel with the second condenser; a compressor connected in series with the second condenser and the second evaporator respectively; and a throttle valve connected in parallel with the compressor.

[0013] In an exemplary embodiment, it includes: when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the cold water pump is used to absorb water in the cold water loop and transfer the water in the cold water loop to the second plate heat exchanger; the second plate heat exchanger is used to preheat the water in the cold water loop; the second condenser is used to heat the preheated water and transfer the heated water to the hot water loop to provide heat for the energy storage power station based on the heated water in the hot water loop.

[0014] In an exemplary embodiment, when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the second evaporator is also used to extract the heat of the preheated water in the second plate heat exchanger through the refrigerant in the heating device, and send the refrigerant after heat extraction to the compressor; the compressor is used to compress the received refrigerant after heat extraction to generate high-temperature and high-pressure gas; the second condenser is also used to transfer the heat in the high-temperature and high-pressure gas to the hot water loop to heat the water in the hot water loop; the throttle valve is used to send the water in the hot water loop to the second evaporator, so that the second evaporator extracts the heat of the water in the hot water loop through the refrigerant.

[0015] In an embodiment of the present application, a dual-loop heat and cold supply system includes a heat removal device, a heating device, an energy storage power station of an electric power system, and a battery module of an electric power system; the energy storage power station is connected to a hot water loop, and the battery module is connected to a cold water loop; the input end of the heat removal device is connected to a hot water loop, and the output end is connected to a cold water loop; the input end of the heating device is connected to a cold water loop, and the output end is connected to a hot water loop. When the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the working power of the heat removal device is increased so that the cold water loop dissipates heat for the battery module; when the heat dissipation of the battery module is less than the heat required by the energy storage power station, the working power of the heating device is increased so that the hot water loop provides heat for the energy storage power station. In other words, an embodiment of the present application provides a dual-loop heat and cold supply system including a heating device and a heat removal device. When the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the heat removal device can enable the cold water loop to dissipate heat for the battery module, and when the heat dissipation of the battery module is less than the heat required by the energy storage power station, the heating device can enable the hot water loop to provide heat for the energy storage power station. According to the embodiments of the present application, the problem in the related art that there is a lack of a system that can meet both the heating demand and the cooling demand of the power system can be solved. Furthermore, the dual-loop hot and cold supply system of the embodiments of the present application can meet both the heating demand (i.e., providing heat) and the cooling demand (i.e., heat dissipation) of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 is a structural block diagram of a dual-loop cooling and heating system according to an embodiment of the present application;

[0018] Figure 2 is a structural block diagram of a power system according to an embodiment of the present application;

[0019] Figure 3 is a structural block diagram of a heat removal device and a heating device according to an embodiment of the present application (I);

[0020] Figure 4 Structural block diagram of a heat removal device and a heating device according to an embodiment of the present application (II). DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices; "plurality" means two or more.

[0023] In this embodiment, a dual-loop cooling and heating system is provided. Figure 11 is a structural block diagram of a dual-loop cooling and heating system according to an embodiment of the present application, the dual-loop cooling and heating system comprising: a heat removal device 106, a heating device 108, an energy storage power station 104 of an electric power system, and a battery module 102 of the electric power system, wherein the input end of the heat removal device 106 is connected to the hot water loop, and the output end of the heat removal device 106 is connected to the cold water loop; the input end of the heating device 108 is connected to the cold water loop, and the output end of the heating device 108 is connected to the hot water loop; the hot water loop is connected to the energy storage power station 104; The cold water loop is connected to the battery module 102; wherein the heat dissipation device 106 is used to increase the working power of the heat dissipation device 106 when the heat dissipation of the battery module 102 is greater than the heat required by the energy storage power station 104, so that the cold water loop dissipates heat for the battery module 102; the heating device 108 is used to increase the working power of the heating device 108 when the heat dissipation in the battery module 102 is less than the heat required by the energy storage power station 104, so that the hot water loop provides heat for the energy storage power station 104.

[0024] In an embodiment of the present application, a dual-loop heat and cold supply system includes a heat removal device, a heating device, an energy storage power station of an electric power system, and a battery module of an electric power system; the energy storage power station is connected to a hot water loop, and the battery module is connected to a cold water loop; the input end of the heat removal device is connected to a hot water loop, and the output end is connected to a cold water loop; the input end of the heating device is connected to a cold water loop, and the output end is connected to a hot water loop. When the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the working power of the heat removal device is increased so that the cold water loop dissipates heat for the battery module; when the heat dissipation of the battery module is less than the heat required by the energy storage power station, the working power of the heating device is increased so that the hot water loop provides heat for the energy storage power station. In other words, an embodiment of the present application provides a dual-loop heat and cold supply system including a heating device and a heat removal device. When the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the heat removal device can enable the cold water loop to dissipate heat for the battery module, and when the heat dissipation of the battery module is less than the heat required by the energy storage power station, the heating device can enable the hot water loop to provide heat for the energy storage power station. According to the embodiments of the present application, the problem in the related art that there is a lack of a system that can meet both the heating demand and the cooling demand of the power system can be solved. Furthermore, the dual-loop hot and cold supply system of the embodiments of the present application can meet both the heating demand (i.e., providing heat) and the cooling demand (i.e., heat dissipation) of the power system.

[0025] in, Figure 2 is a structural block diagram of a power system according to an embodiment of the present application, such as Figure 2 As shown, the energy storage power station of the power system includes Figure 2Among them: 4011, 4012, 4021, 4022, 401Y, 402Y. Among them, 4011 to 4012 to 401Y are heat exchange equipment of the heating device in the energy storage power station; 4021 to 4022 to 402Y are water pumps of the heating device in the energy storage power station.

[0026] The battery modules of the power system include Figure 2 Among them: 3011, 3012, 3021, 3022, 301Y, 302Y. Among them, 3011 to 3012 to 301Y are heat exchange devices of the cooling device in the battery module; 3021 to 3022 to 302Y are water pumps of the cooling device in the battery module.

[0027] Figure 2 5 in the figure is a heat dissipation device. Figure 2 6 is a heating device. Figure 2 1 in the figure is the hot water loop. Figure 2 2 in the figure is the cold water loop.

[0028] like Figure 2 As shown, the embodiment of the present application divides high-temperature water and low-temperature water into two loops: hot water loop 1 and cold water loop 2. The hot water loop 1 is connected to the inlet of the energy storage power station heating device 4 and provides hot water, and the cold water loop 2 is connected to the inlet of the battery module cooling device 3 and provides cold water. The heating device 4 includes heat exchange devices 4011, 4012 to 401Y and water pumps 4021, 4022 to 402Y. The cooling device 3 includes heat exchange devices 3011, 3012 to 301X and water pumps 3021, 3022 to 302X.

[0029] The main idea of ​​the optional embodiment of the present application is: when the heat dissipation of the battery module cooling device is greater than the heat required by the energy storage power station heating device, it is manifested as the temperature of the hot water loop 1 and the cold water loop 2 in the system increases, and the heat removal device 5 works to discharge the excess heat from the system. When the heat dissipation of the battery module cooling device is less than the heat required by the energy storage power station heating device, it is manifested as the temperature of the hot water loop 1 and the cold water loop 2 in the system decreases, and the heating system 6 works to supplement the insufficient heat to the system.

[0030] The system automatically adjusts the operating time and operating load of the heating device 6 and the heat dissipation device 5 according to its own cooling and heating needs.

[0031] Optionally, the heat dissipation device also includes: a hot water pump connected in series with the hot water loop; a first plate heat exchanger connected in series with the hot water pump; a cooling water pump connected in series with the first plate heat exchanger; a cooling tower connected in series with the cooling water pump; and an electric refrigerator connected in series with the cooling tower, wherein the electric refrigerator is respectively connected in series with the cold water loop and the first plate heat exchanger.

[0032] Optionally, the electric refrigerator further includes: a first evaporator connected in series with the cold water loop and the first plate heat exchanger respectively; and a first condenser connected in parallel with the first evaporator.

[0033] Understandably, Figure 3 is a structural block diagram of a heat removal device and a heating device according to an embodiment of the present application (I), such as Figure 3 As shown, Figure 3 4011, 4012, 401Y, 3011, 3012, 301Y, 4021, 4022, 402Y and Figure 2 The same as in.

[0034] Figure 3 50X in the figure is the specific structure of the heat removal device, wherein:

[0035] 505 is a hot water pump, 501 is a plate heat exchanger of a heat dissipation device (i.e., the first plate heat exchanger), 504 is a cooling water pump, and 503 is a cooling tower. Figure 3 5021, 5022, 5023 and 5024 in the embodiment together constitute an electric refrigerator (hereinafter 5021, 5022, 5023 and 5024 are collectively referred to as 502).

[0036] Among them, 5021 is a condenser of the electric refrigerator (ie, a first condenser), 5022 is an evaporator of the electric refrigerator (ie, a first evaporator), 5023 is a compressor of the electric refrigerator, and 5024 is a throttle valve of the electric refrigerator.

[0037] Optionally, the battery module also includes: a cooling device, wherein the cooling device is used to obtain excess heat in the battery module and heat the water in the hot water loop based on the excess heat when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, wherein the excess heat is determined based on the difference between the heat dissipation of the battery module and the heat required by the energy storage power station.

[0038] Optionally, when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the hot water pump is also used to obtain water in the hot water loop and transfer the water in the hot water loop to the first plate heat exchanger; the first plate heat exchanger is also used to exchange heat between the water in the hot water loop and the cooling water generated by the cooling tower to cool the water in the hot water loop and transfer the cooled water to the first evaporator; the first evaporator is used to receive the cooled water and cool the cooled water, and transfer the secondary cooled water to the cold water loop to dissipate heat from the battery module based on the secondary cooled water in the cold water loop.

[0039] Optionally, when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the cooling tower is also used to generate cooling water; the cooling water pump is also used to transfer the cooling water to the first condenser; the first condenser is also used to absorb the heat of the hot water loop according to the cooling water, and send the cooling water after absorbing the heat to the cooling tower, so that the cooling tower can dissipate the heat of the hot water loop into the atmosphere.

[0040] It is understandable that if Figure 3 As shown, on the one hand, the heat removal device 5 uses air as a cold source, and its cold source equipment is a cooling tower 503. The generated cooling water is driven by a cooling water pump 504, and sequentially passes through a plate heat exchanger 501 and an electric refrigerator condenser 5021 to return to the cooling tower 503. On the other hand, the hot water in the hot water loop 1 is driven by a hot water pump 505 to sequentially pass through a plate heat exchanger 501 and an electric refrigerator evaporator 5022 to return to the cold water loop 2.

[0041] 502 is an electric refrigerator, which is turned on when the ambient temperature is high. The refrigerant evaporates in the evaporator 5022 and absorbs the heat of the double-loop water for cooling. 5023 is a compressor that compresses the refrigerant. The refrigerant condenses and releases heat in the condenser 5021, and transfers the heat to the cooling water. 5024 is a throttling device.

[0042] Among them, the cold source of the heat removal device can be outdoor air and low-temperature river water, groundwater, seawater, reservoir water, etc. The main equipment can include cooling towers, plate heat exchangers and electric refrigerators, etc. The cold source and equipment can be one or more combinations of the above.

[0043] Optionally, the heating device further includes: a cold water pump connected in series with the cold water loop; a second plate heat exchanger connected in series with the cold water pump; and an electric heat pump connected in series with the second plate heat exchanger.

[0044] Optionally, the electric heat pump also includes: a second condenser connected in series with the hot water loop and the second plate heat exchanger respectively; a second evaporator connected in parallel with the second condenser; a compressor connected in series with the second condenser and the second evaporator respectively; and a throttle valve connected in parallel with the compressor.

[0045] It is understandable that if Figure 3 As shown, Figure 3 60X in the figure is the specific structure of the heating device, wherein:

[0046] 603 is a cold water pump, 601 is a plate heat exchanger of a heating device (i.e., a second plate heat exchanger), and 602 is an electric heat pump. Figure 36021, 6022, 6023 and 6024 together constitute an electric heat pump (hereinafter 6021, 6022, 6023 and 6024 are collectively referred to as 602).

[0047] Among them, 6021 is the condenser of the electric heat pump (i.e., the second condenser), 6022 is the evaporator of the electric heat pump (i.e., the second evaporator), 6023 is the compressor of the electric heat pump, and 6024 is the throttle valve of the electric heat pump.

[0048] Optionally, when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the cold water pump is used to absorb water in the cold water loop and transfer the water in the cold water loop to the second plate heat exchanger; the second plate heat exchanger is used to preheat the water in the cold water loop; the second condenser is used to heat the preheated water and transfer the heated water to the hot water loop to provide heat for the energy storage power station based on the heated water in the hot water loop.

[0049] Optionally, when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the second evaporator is also used to extract the heat of the preheated water in the second plate heat exchanger through the refrigerant in the heating device, and send the refrigerant after heat extraction to the compressor; the compressor is used to compress the received refrigerant after heat extraction to generate high-temperature and high-pressure gas; the second condenser is also used to transfer the heat in the high-temperature and high-pressure gas to the hot water loop to heat the water in the hot water loop; the throttle valve is used to send the water in the hot water loop to the second evaporator, so that the second evaporator extracts the heat of the water in the hot water loop through the refrigerant.

[0050] It can be understood that the heating device uses various waste heat or natural heat sources, which are cooled step by step through the plate heat exchanger 601 and the evaporator 6022 of the electric heat pump 602 to provide heat. In addition, the cold water in the cold water loop 2 is driven by the cold water pump 603, passes through the plate heat exchanger 601 and the electric heat pump condenser 6021 in turn, and is heated in turn before entering the hot water loop 1.

[0051] The heat source of the heating device can be various industrial or power plant waste heat, outdoor air, groundwater, river water, lake water, sea water, reservoir water and electricity.

[0052] In order to better understand the process of the above-mentioned dual-loop cooling and heating system, the above-mentioned dual-loop cooling and heating system is described below in combination with an optional embodiment, but it is not used to limit the technical solution of the embodiment of the present application.

[0053] Figure 4According to the structural block diagram (II) of the heat removal device and the heating device of the embodiment of the present application, as shown in FIG. Figure 4 As shown:

[0054] Figure 4 and Figure 3 The difference is that the heating device 6 only has two devices, the plate heat exchanger or electric heater 604 and the cold water pump 603. The other system connection methods and operation strategies are the same as Figure 3 same.

[0055] Among them, 604 is a plate heat exchanger or electric heater, and the others are Figure 3 Same as the device in .

[0056] There are both cooling and heating demands in the energy storage power station cluster, especially in winter. The basic principle of the dual-loop system of the present invention is to comprehensively utilize the waste heat and waste cold resources of the energy storage power station to avoid simultaneous heating and cooling conditions. When the overall heating demand of the energy storage power station is greater than the cooling demand, the whole needs to be heated, that is, the heating device 6 is started; if the cooling demand is greater, the heat removal device 5 is started.

[0057] The heat removal device 5 uses air as a cold source, and its cold source equipment is a cooling tower 503. The generated cooling water is driven by a cooling water pump 504, and sequentially passes through a plate heat exchanger 501 and an electric refrigerator condenser 5021 to return to the cooling tower 503. In addition, the hot water in the hot water loop 1 is driven by a hot water pump 505 to sequentially pass through a plate heat exchanger 501 and an electric refrigerator evaporator 5022 to return to the cold water loop 2.

[0058] The heating device 6 uses various waste heat or natural heat sources, and sequentially passes through the plate heat exchanger or electric heater 604 and the cold water pump 603 to provide heat by gradually cooling down.

[0059] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0060] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0061] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dual-loop cooling and heating system, characterized in that: include: A heat removal device, a heating device, an energy storage power station of an electric power system, and a battery module of the electric power system, wherein the input end of the heat removal device is connected to a hot water loop, and the output end of the heat removal device is connected to a cold water loop; the input end of the heating device is connected to a cold water loop, and the output end of the heating device is connected to the hot water loop; the hot water loop is connected to the energy storage power station; the cold water loop is connected to the battery module; wherein, The heat removal device is used to increase the working power of the heat removal device when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, so that the cold water loop can dissipate heat for the battery module; The heating device is used to increase the working power of the heating device when the heat dissipation in the battery module is less than the heat required by the energy storage power station, so that the hot water loop provides heat for the energy storage power station.

2. The dual-loop cooling and heating system according to claim 1 is characterized in that: The heat removal device further comprises: a hot water pump connected in series with the hot water loop; a first plate heat exchanger connected in series with the hot water pump; a cooling water pump connected in series with the first plate heat exchanger; A cooling tower connected in series with the cooling water pump; An electric refrigerator is connected in series with the cooling tower, wherein the electric refrigerator is connected in series with the cold water loop and the first plate heat exchanger respectively.

3. The dual-loop cooling and heating system according to claim 2 is characterized in that: The electric refrigerator further comprises: a first evaporator connected in series with the cold water loop and the first plate heat exchanger respectively; A first condenser is connected in parallel with the first evaporator.

4. The dual-loop cooling and heating system according to claim 3 is characterized in that: The battery module further includes a cooling device, wherein: The cooling device is used to obtain excess heat in the battery module and heat the water in the hot water loop based on the excess heat when the heat dissipation of the battery module is greater than the heat required by the energy storage power station, wherein the excess heat is determined based on the difference between the heat dissipation of the battery module and the heat required by the energy storage power station.

5. The dual-loop cooling and heating system according to claim 4 is characterized in that: include: In the case where the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the hot water pump is also used to obtain water in the hot water loop and transfer the water in the hot water loop to the first plate heat exchanger; The first plate heat exchanger is further used to perform heat exchange between the water in the hot water loop and the cooling water generated by the cooling tower to cool the water in the hot water loop and transmit the cooled water to the first evaporator; The first evaporator is used to receive cooled water, cool the cooled water, and transmit the secondary cooled water to the cold water loop to dissipate heat from the battery module according to the secondary cooled water in the cold water loop.

6. The dual-loop cooling and heating system according to claim 4 is characterized in that: include: When the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the cooling tower is also used to generate cooling water; The cooling water pump is further used to transmit the cooling water to the first condenser; The first condenser is further used for absorbing the heat of the hot water loop according to the cooling water, and sending the cooling water after absorbing the heat to the cooling tower, so that the cooling tower dissipates the heat of the hot water loop into the atmosphere.

7. The dual-loop cooling and heating system according to claim 1 is characterized in that: The heating device further comprises: a cold water pump connected in series with the cold water loop; a second plate heat exchanger connected in series with the cold water pump; An electric heat pump is connected in series with the second plate heat exchanger.

8. The dual-loop cooling and heating system according to claim 7 is characterized in that: The electric heat pump further comprises: a second condenser connected in series with the hot water loop and the second plate heat exchanger respectively; a second evaporator connected in parallel with the second condenser; a compressor connected in series with the second condenser and the second evaporator respectively; A throttle valve is connected in parallel with the compressor.

9. The dual-loop cooling and heating system according to claim 8, characterized in that: include: When the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the cold water pump is used to absorb water in the cold water loop and transfer the water in the cold water loop to the second plate heat exchanger; The second plate heat exchanger is used to preheat the water in the cold water loop; The second condenser is used to heat the preheated water and transmit the heated water to the hot water loop, so as to provide heat for the energy storage power station according to the heated water in the hot water loop.

10. The dual-loop cooling and heating system according to claim 9, characterized in that: include: In the case where the heat dissipation of the battery module is greater than the heat required by the energy storage power station, the second evaporator is further used to extract the heat of the preheated water in the second plate heat exchanger through the refrigerant in the heating device, and send the refrigerant after the heat is extracted to the compressor; The compressor is used to compress the received refrigerant after extracting heat to generate high-temperature and high-pressure gas; The second condenser is further used to transfer heat in the high-temperature and high-pressure gas to the hot water loop to heat the water in the hot water loop; The throttle valve is used to send the water in the hot water loop to the second evaporator, so that the second evaporator extracts heat from the water in the hot water loop through the refrigerant.

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