Optimized operation control method of heat storage and cold storage integrated energy storage water tank

Abstract

The application provides a heat storage and cold storage integrated energy storage water tank optimization operation control method, and belongs to the technical field of energy storage. An electric mechanism is arranged between a heat storage mechanism and a cold storage mechanism, and the heat storage mechanism and the cold storage mechanism are positionally staggered. The connection problem of opposite working conditions in winter and summer is considered, the optimization control strategy under different working conditions in winter and summer is simultaneously proposed, the optimization matching of heating and cooling loads is realized, the space and investment and maintenance cost are effectively saved, the outlet water temperature is ensured, and the contradiction between the supply and demand of the cooling and heating capacity is solved.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, and in particular to an optimized operation control method for an integrated thermal and cold storage water tank. Background Technology

[0002] In recent years, the heating area in China has continued to grow. By 2023, heating energy consumption in northern urban buildings accounted for approximately one-quarter of total building energy consumption. Including cooling energy consumption, the combined energy consumption of both would be even more significant. Simultaneously, with increasing urbanization and calls for heating in cities along the Yangtze River, the heating area is projected to continue its substantial growth. This will lead to a widening of the peak-to-valley heat load difference, exacerbating the peak-shaving burden on heating networks and increasing the construction costs of thermal power plants. To better match heating and cooling loads and reduce building energy consumption and carbon emissions, energy storage technology has received significant national attention in recent years. Therefore, highly efficient energy storage technologies integrating thermal and cold storage have been proposed, significantly improving the utilization rate of energy storage equipment, reducing the cost of energy storage technology, and enhancing operational efficiency through unique optimization design techniques, thus promoting the application of energy storage technology. However, complex operating conditions and optimization control under load fluctuations present challenges. Therefore, an optimized operation control method for dual-purpose thermal and cold storage water tanks is proposed. This application provides an optimized operation control method for an integrated thermal and cold storage water tank to meet the requirements of efficient operation of energy storage systems under load fluctuations and efficient operation under different working conditions of heat storage and cold storage, thereby reducing carbon emissions and operating costs of building energy systems and achieving both economic and environmental benefits. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0004] An optimized operation control method for an integrated thermal and cold storage water tank includes an electrical mechanism, wherein a thermal storage mechanism and a cold storage mechanism are arranged between the electrical mechanisms, and the positions of the thermal storage mechanism and the cold storage mechanism are staggered.

[0005] The electrical system includes an energy storage tank, a drain valve, a water meter, a check valve, a heat source, a first pressure gauge, a second pressure gauge, a temperature sensor, a first thermometer, a second thermometer, an electric valve, and an intermediate tank. A control chip is installed inside the energy storage tank. The drain valve, the water meter, the check valve, the heat source, the first pressure gauge, the second pressure gauge, the temperature sensor, the first thermometer, the second thermometer, the electric valve, and the intermediate tank are all electrically connected to the control chip.

[0006] The energy storage tank is equipped with an overflow outlet and a drain outlet;

[0007] The heat storage mechanism includes a primary heat pump and a secondary heat pump, both of which are disposed between the electrical components;

[0008] The cold storage mechanism includes a plate heat exchanger and a cooling tower, both of which are disposed between the electrical components.

[0009] Preferably, the integrated thermal and cold storage water tank further includes a soft water pipe, a first connecting pipe, and a second connecting pipe, all of which are detachably connected to the electrical mechanism.

[0010] Preferably, the soft water pipe, the first connecting pipe, and the second connecting pipe are all detachably connected to the heat storage mechanism.

[0011] Preferably, the soft water pipe, the first connecting pipe, and the second connecting pipe are all detachably connected to the cold storage mechanism.

[0012] Preferably, the integrated thermal and cold storage water tank further includes a butterfly valve assembly, which includes a first butterfly valve, a second butterfly valve, a third butterfly valve, a fourth butterfly valve, a fifth butterfly valve, a sixth butterfly valve, a seventh butterfly valve, an eighth butterfly valve, a ninth butterfly valve, a tenth butterfly valve, an eleventh butterfly valve, a twelfth butterfly valve, a thirteenth butterfly valve, and a fourteenth butterfly valve. The first butterfly valve, the second butterfly valve, the third butterfly valve, the fourth butterfly valve, the fifth butterfly valve, the sixth butterfly valve, the seventh butterfly valve, the eighth butterfly valve, the ninth butterfly valve, the tenth butterfly valve, the eleventh butterfly valve, the twelfth butterfly valve, the thirteenth butterfly valve, and the fourteenth butterfly valve are all disposed between the electrical mechanisms.

[0013] Preferably, the first butterfly valve, the second butterfly valve, the third butterfly valve, the fourth butterfly valve, the fifth butterfly valve, the sixth butterfly valve, the seventh butterfly valve, the eighth butterfly valve, the ninth butterfly valve, the tenth butterfly valve, the eleventh butterfly valve, the twelfth butterfly valve, the thirteenth butterfly valve, and the fourteenth butterfly valve are detachably connected to the soft water pipe, the first connecting pipe, and the second connecting pipe, respectively.

[0014] The present invention also provides a method for optimizing the operation and control of an energy storage water tank, the method comprising the following steps:

[0015] During winter, heat storage and release are achieved through the aforementioned heat storage mechanism;

[0016] In summer, the cold storage mechanism is used to store and release cold.

[0017] The phrase "achieving heat storage and release through the heat storage mechanism in winter" includes:

[0018] The flow path of heating water is S1 and the flow path of cooling water is S2;

[0019] The heating water flow process S1 includes the following steps:

[0020] S11. The water flows into the intermediate tank through the primary heat pump, and then into the energy storage tank through the intermediate tank;

[0021] S12. The heat flows into the secondary heat pump through the primary heat pump, and then into the cooling tower through the secondary heat pump.

[0022] S13. The water flows into the plate heat exchanger through the secondary heat pump, and then into the energy storage tank through the plate heat exchanger, passing through the second butterfly valve along the way;

[0023] The cooling water flow process S2 includes the following steps:

[0024] S21. The water flows into the secondary heat pump through the cooling tower, and then into the primary heat pump through the secondary heat pump;

[0025] S22. The water flows into the plate heat exchanger through the energy storage tank, passing through the third butterfly valve along the way;

[0026] S23. The water flows into the secondary heat pump through the energy storage tank, passing through the fifth butterfly valve along the way;

[0027] S24. The water flows into the first-stage heat pump through the intermediate tank;

[0028] S25. Water from the water supply point flows directly into the primary heat pump.

[0029] "Storing and releasing cold through the aforementioned cold storage mechanism during summer" includes:

[0030] Cooling water flow procedure S3 and softened water flow procedure S4;

[0031] The cooling water flow procedure S3 includes the following steps:

[0032] S31. The water flows into the intermediate tank through the primary heat pump, and then into the energy storage tank through the intermediate tank;

[0033] S32. The water flows into the plate heat exchanger through the primary heat pump, and then into the energy storage tank through the plate heat exchanger, passing through the first butterfly valve along the way.

[0034] S33, The heat flows into the secondary heat pump through the primary heat pump;

[0035] S34. Water from the water supply point flows directly into the energy storage tank through the plate heat exchanger, passing through the seventh butterfly valve along the way;

[0036] The softened water flow process S4 includes the following steps:

[0037] S41, The water flows into the first-stage heat pump through the intermediate tank;

[0038] S42, The heat flows into the first-stage heat pump through the plate heat exchanger;

[0039] S43. The water flows into the energy storage tank through the secondary heat pump, passing through the sixth butterfly valve along the way;

[0040] S44. The water flows into the plate heat exchanger through the energy storage tank, passes through the fourth butterfly valve, and then flows into the first-stage heat pump through the plate heat exchanger.

[0041] S45. The fluid flows into the secondary heat pump through the plate heat exchanger, and then into the cooling tower through the secondary heat pump.

[0042] Compared with the prior art, this invention has at least the following beneficial effects: Flow direction switching under different operating conditions: Because the water in the tank is always cold water at the bottom and hot water at the top during the energy storage and release process in winter and summer, but the positions of the water intake and inlet change in winter and summer, this invention assumes a flow direction changing valve on the energy storage tank, and the energy storage and release circulation pump is located at the bottom of the tank, such as... Figure 1 As shown, during the winter heat storage process, the eighth butterfly valve opens for water intake at the bottom, and the fifth butterfly valve opens for water return at the top. During the winter heat release process, the third butterfly valve opens for water intake at the top, and the second butterfly valve opens for water return at the bottom. During the summer cold storage process, the seventh butterfly valve opens for water intake at the top, and the sixth butterfly valve opens for water return at the bottom. During the summer cold release process, the fourth butterfly valve opens for water intake at the bottom, and the first butterfly valve opens for water return at the top. A flow direction reversal device also needs to be installed on the heat source and cold source sides, such as... Figure 2 As shown, because the flow direction in the evaporator and condenser of the heat source, such as the heat pump, cannot change, it is necessary to add a flow direction changing device and a valve group consisting of four valves. In summer, the eleventh and twelfth butterfly valves are open, and the thirteenth and fourteenth butterfly valves are closed. In winter, the thirteenth and fourteenth butterfly valves are open, and the eleventh and twelfth butterfly valves are closed. Attached Figure Description

[0043] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0044] Figure 1 A schematic diagram of the configuration structure for the flow direction changing valve of the energy storage water tank body;

[0045] Figure 2 A schematic diagram of the flow direction conversion device that needs to be added to the heat source side for integration with the integrated heat and cold storage water tank;

[0046] Figure 3This is a schematic diagram of the overall principle of the winter heat storage and release system;

[0047] Figure 4 This is a schematic diagram illustrating the principle of heat storage in a water storage tank during winter.

[0048] Figure 5 A schematic diagram illustrating the principle of using energy storage water tanks for heating in winter;

[0049] Figure 6 A schematic diagram illustrating the principle of simultaneous operation of heat storage and heating of the energy storage tank in winter;

[0050] Figure 7 This is a schematic diagram of the overall principle of the summer cold storage and release system;

[0051] Figure 8 This is a schematic diagram illustrating the principle of cooling water storage in a water tank during the summer.

[0052] Figure 9 A schematic diagram illustrating the principle of using energy storage water tanks for cooling in summer;

[0053] Figure 10 This is a schematic diagram illustrating the principle of simultaneous operation of energy storage tank for cooling and energy storage tank for cooling in summer.

[0054] [Figure Labels]

[0055] 1. Energy storage water tank; 2. Overflow outlet; 3. Sewage outlet; 4. Sewage valve; 5. Water meter; 6. Check valve; 7. Heat source / cold source; 8. First pressure gauge; 9. Second pressure gauge; 10. Temperature sensor; 11. First thermometer; 12. Second thermometer; 13. Electric valve; 14. Intermediate tank; 15. Primary heat pump; 16. Secondary heat pump; 17. Plate heat exchanger; 18. Cooling tower; 19. Soft water pipe; 20. First connecting riser; 21. Second connecting riser; 22. First butterfly valve; 23. Second butterfly valve; 24. Third butterfly valve; 25. Fourth butterfly valve; 26. Fifth butterfly valve; 27. Sixth butterfly valve; 28. Seventh butterfly valve; 29. ​​Eighth butterfly valve; 30. Ninth butterfly valve; 31. Tenth butterfly valve; 32. Eleventh butterfly valve; 33. Twelfth butterfly valve; 34. Thirteenth butterfly valve; 35. Fourteenth butterfly valve.

[0056] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0057] The following describes in detail, with reference to the accompanying drawings and specific embodiments, a method for optimizing the operation and control of an integrated thermal and cold storage water tank provided by the present invention. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0058] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0059] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0060] It is understood that the meanings of “on”, “above” and “above” in this disclosure should be interpreted in the broadest sense, such that “on” means not only “directly on” something, but also includes something with an intermediary feature or layer, and that “above” or “above” means not only “on” something, but also includes something “above” or “above” without an intermediary feature or layer.

[0061] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0062] like Figures 1 to 10As shown, an embodiment of the present invention provides an optimized operation control method for an integrated thermal and cold storage water tank, including an electrical mechanism, with a thermal storage mechanism and a cold storage mechanism arranged between the electrical mechanisms, the positions of the thermal storage mechanism and the cold storage mechanism being staggered.

[0063] The electrical system includes an energy storage tank 1, a drain valve 4, a water meter 5, a check valve 6, a heat source 7, a first pressure gauge 8, a second pressure gauge 9, a temperature sensor 10, a first thermometer 11, a second thermometer 12, an electric valve 13, and an intermediate tank 14. The energy storage tank 1 is equipped with a control chip. The drain valve 4, water meter 5, check valve 6, heat source 7, first pressure gauge 8, second pressure gauge 9, temperature sensor 10, first thermometer 11, second thermometer 12, electric valve 13, and intermediate tank 14 are all electrically connected to the control chip.

[0064] The energy storage tank is equipped with an overflow port 2 and a drain port 3;

[0065] The heat storage mechanism includes a primary heat pump 15 and a secondary heat pump 16, both of which are located between the electrical components.

[0066] The cold storage mechanism includes a plate heat exchanger 17 and a cooling tower 18, both of which are located between the electrical components. An integrated thermal and cold storage water tank also includes a flexible water pipe 19, a first connecting pipe 20, and a second connecting pipe 21. The flexible water pipe 19, the first connecting pipe 20, and the second connecting pipe 21 are all detachably connected to the electrical components, the thermal storage mechanism, and the cold storage mechanism. The integrated thermal and cold storage water tank also includes a butterfly valve assembly, comprising a first butterfly valve 22, a second butterfly valve 23, a third butterfly valve 24, a fourth butterfly valve 25, a fifth butterfly valve 26, a sixth butterfly valve 27, a seventh butterfly valve 28, an eighth butterfly valve 29, a ninth butterfly valve 30, and a tenth butterfly valve 31. Eleventh butterfly valve 32, twelfth butterfly valve 33, thirteenth butterfly valve 34 and fourteenth butterfly valve 35, first butterfly valve 22, second butterfly valve 23, third butterfly valve 24, fourth butterfly valve 25, fifth butterfly valve 26, sixth butterfly valve 27, seventh butterfly valve 28, eighth butterfly valve 29, ninth butterfly valve 30, tenth butterfly valve 31, eleventh butterfly valve 32, twelfth butterfly valve 33, thirteenth butterfly valve 34 and fourteenth butterfly valve 35 are all located between the electrical mechanisms. First butterfly valve 22, second butterfly valve 23, third butterfly valve 24, fourth butterfly valve 25, fifth butterfly valve 26, sixth butterfly valve 27, seventh butterfly valve 28, eighth butterfly valve 29, ninth butterfly valve 30, tenth butterfly valve 31, eleventh butterfly valve 32, twelfth butterfly valve 33, thirteenth butterfly valve 34 and fourteenth butterfly valve 35 are detachably connected to soft water pipe 19, first connecting riser pipe 20 and second connecting riser pipe 21 respectively. Flow direction switching under different operating conditions: Because the water in the tank is always cold water at the bottom and hot water at the top during energy storage and release in winter and summer, but the positions of the water intake and inlet change in winter and summer, this invention assumes a flow direction changing valve on the energy storage tank, and the energy storage and release circulation pump is located at the bottom of the tank, such as... Figure 1 As shown, during the winter heat storage process, the eighth butterfly valve 29 opens for water intake at the bottom and the fifth butterfly valve 26 opens for water return at the top. During the winter heat release process, the third butterfly valve 24 opens for water intake at the top and the second butterfly valve 23 opens for water return at the bottom. During the summer cold storage process, the seventh butterfly valve 28 opens for water intake at the top and the sixth butterfly valve 27 opens for water return at the bottom. During the summer cold release process, the fourth butterfly valve 25 opens for water intake at the bottom and the first butterfly valve 22 opens for water return at the top. A flow direction conversion device also needs to be installed on the heat source and cold source sides, such as... Figure 2As shown, since the flow direction within the evaporator and condenser of the heat pump cannot change, a flow direction changing device and a valve group consisting of four valves are required. In summer, the eleventh butterfly valve 32 and the twelfth butterfly valve 33 are open, and the thirteenth butterfly valve 34 and the fourteenth butterfly valve 35 are closed. In winter, the thirteenth butterfly valve 34 and the fourteenth butterfly valve 35 are open, and the eleventh butterfly valve 32 and the twelfth butterfly valve 33 are closed. The above device realizes the connection problem considering the opposite operating conditions in winter and summer. This solution also proposes an optimized control strategy for different operating conditions in winter and summer to achieve optimized matching of heating and cooling loads, effectively save space and investment and maintenance costs, ensure the outlet water temperature, and solve the contradiction between supply and demand of heating and cooling.

[0067] The control method includes the following steps:

[0068] During winter, heat storage and release are achieved through a heat storage mechanism;

[0069] In summer, cold storage and release are achieved through a cold storage mechanism.

[0070] The flow path of heating water is S1 and the flow path of cooling water is S2;

[0071] The heating water flow process S1 includes the following steps:

[0072] S11, flows into intermediate tank 14 through primary heat pump 15, and then into energy storage tank 1 through intermediate tank 14;

[0073] S12, flows into the secondary heat pump 16 through the primary heat pump 15, and then into the cooling tower 18 through the secondary heat pump 16;

[0074] S13. The water flows into the plate heat exchanger 17 through the secondary heat pump 16, and then into the energy storage tank 1 through the plate heat exchanger 17, passing through the second butterfly valve 23 along the way.

[0075] Cooling water flow process S2 includes the following steps:

[0076] S21, flows into the secondary heat pump 16 through the cooling tower 18, and then into the primary heat pump 15 through the secondary heat pump 16;

[0077] S22, flows into plate heat exchanger 17 through energy storage tank 1, passing through third butterfly valve 24 along the way;

[0078] S23, flows into the secondary heat pump 16 through the energy storage tank 1, passing through the fifth butterfly valve 26 along the way;

[0079] S24, flows into the first-stage heat pump 15 through the intermediate tank 14;

[0080] S25, the water from the water supply point flows directly into the first-stage heat pump 15.

[0081] "Storing and releasing cold through cold storage mechanisms in summer" includes:

[0082] Cooling water flow procedure S3 and softened water flow procedure S4;

[0083] Cooling water flow procedure S3 includes the following steps:

[0084] S31, flows into intermediate tank 14 through primary heat pump 15, and then into energy storage tank 1 through intermediate tank 14;

[0085] S32. The water flows into the plate heat exchanger 17 through the first-stage heat pump 15, and then into the energy storage tank 1 through the plate heat exchanger 17, passing through the first butterfly valve 22 along the way.

[0086] S33, flows into the secondary heat pump 16 through the primary heat pump 15;

[0087] S34. Water from the water supply point flows directly into the energy storage tank 1 through the plate heat exchanger 17, passing through the seventh butterfly valve 28 along the way.

[0088] The softened water flow process S4 includes the following steps:

[0089] S41, flows into the primary heat pump 15 through the intermediate tank 14;

[0090] S42, flows into the first-stage heat pump 15 through the plate heat exchanger 17;

[0091] S43, flows into the energy storage tank 1 through the secondary heat pump 16, passing through the sixth butterfly valve 27 along the way;

[0092] S44. The water flows into the plate heat exchanger 17 through the energy storage tank 1, passes through the fourth butterfly valve 25, and then flows into the first-stage heat pump 15 through the plate heat exchanger 17.

[0093] S45 flows into the secondary heat pump 16 through the plate heat exchanger 17, and then into the cooling tower 18 through the secondary heat pump 16.

[0094] like Figure 3 As shown, the system operates in winter. In winter, it uses off-peak electricity in combination with primary heat pump 15 and secondary heat pump 16 to produce high-temperature hot water, which is stored in energy storage tank 1.

[0095] like Figure 4 As shown, when electricity prices are high, hot water stored in the energy storage tank is released in winter to balance the peak and valley differences in electricity load while meeting customers' heating needs.

[0096] like Figure 5 As shown, when the electricity price is high and the heating load is large, high-temperature hot water is produced in winter by combining off-peak electricity with the primary heat pump 15 and the secondary heat pump 16. The hot water is stored in the energy storage tank 1 and released when in use, which balances the peak and valley differences of the electricity load while meeting the heating needs of customers.

[0097] like Figure 6 As shown in the figure, the principle of the same system for cooling in summer is illustrated.

[0098] like Figure 7 As shown, during off-peak electricity periods, in summer, off-peak electricity is combined with a two-stage heat pump to produce 16-stage low-temperature chilled water, which is stored in an energy storage tank. When in use, the chilled water is released to balance the peak-valley difference of the power load while meeting the heating needs of customers.

[0099] like Figure 8 As shown, during peak daytime electricity consumption and when the cooling load is large, the cold water stored in the energy storage tank 1 is used first for cooling. If it is insufficient, the unit is started to balance the peak-valley difference of the power load while meeting the customer's heating needs.

[0100] like Figure 9 As shown, during the summer off-peak electricity season and when the cooling load is large, the off-peak electricity is combined with the secondary heat pump 16 to produce low-temperature chilled water, which is stored in the energy storage tank 1. At the same time, it is combined with the primary heat pump 15 to chill water, so as to balance the peak and valley differences of the power load and meet the heating needs of customers.

[0101] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0102] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc.

[0103] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An integrated thermal and cold storage water tank, characterized in that, include: An electrical mechanism is provided, wherein a heat storage mechanism and a cold storage mechanism are provided between the electrical mechanisms, and the positions of the heat storage mechanism and the cold storage mechanism are staggered. The electrical mechanism includes an energy storage tank (1), a drain valve (4), a water meter (5), a check valve (6), a heat source (7), a first pressure gauge (8), a second pressure gauge (9), a temperature sensor (10), a first thermometer (11), a second thermometer (12), an electric valve (13), and an intermediate tank (14). The energy storage tank (1) is equipped with a control chip. The drain valve (4), the water meter (5), the check valve (6), the heat source (7), the first pressure gauge (8), the second pressure gauge (9), the temperature sensor (10), the first thermometer (11), the second thermometer (12), the electric valve (13), and the intermediate tank (14) are all electrically connected to the control chip. The energy storage tank is provided with an overflow port (2) and a sewage outlet (3); The heat storage mechanism includes a primary heat pump (15) and a secondary heat pump (16), both of which are disposed between the electrical components. The cold storage mechanism includes a plate heat exchanger (17) and a cooling tower (18), both of which are disposed between the electrical components.

2. The integrated thermal and cold storage water tank according to claim 1, characterized in that, The integrated thermal and cold storage water tank further includes a soft water pipe (19), a first connecting pipe (20), and a second connecting pipe (21), all of which are detachably connected to the electrical mechanism.

3. The integrated thermal and cold storage water tank according to claim 2, characterized in that, The soft water pipe (19), the first connecting pipe (20) and the second connecting pipe (21) are all detachably connected to the heat storage mechanism.

4. The integrated thermal and cold storage water tank according to claim 2, characterized in that, The soft water pipe (19), the first connecting pipe (20) and the second connecting pipe (21) are all detachably connected to the cold storage mechanism.

5. The integrated thermal and cold storage water tank according to claim 2, characterized in that, The integrated thermal and cold storage water tank further includes a butterfly valve assembly, which includes a first butterfly valve (22), a second butterfly valve (23), a third butterfly valve (24), a fourth butterfly valve (25), a fifth butterfly valve (26), a sixth butterfly valve (27), a seventh butterfly valve (28), an eighth butterfly valve (29), a ninth butterfly valve (30), a tenth butterfly valve (31), an eleventh butterfly valve (32), a twelfth butterfly valve (33), a thirteenth butterfly valve (34), and a fourteenth butterfly valve (35). The valve (22), the second butterfly valve (23), the third butterfly valve (24), the fourth butterfly valve (25), the fifth butterfly valve (26), the sixth butterfly valve (27), the seventh butterfly valve (28), the eighth butterfly valve (29), the ninth butterfly valve (30), the tenth butterfly valve (31), the eleventh butterfly valve (32), the twelfth butterfly valve (33), the thirteenth butterfly valve (34), and the fourteenth butterfly valve (35) are all disposed between the electrical mechanisms.

6. The integrated thermal and cold storage water tank according to claim 5, characterized in that, The first butterfly valve (22), the second butterfly valve (23), the third butterfly valve (24), the fourth butterfly valve (25), the fifth butterfly valve (26), the sixth butterfly valve (27), the seventh butterfly valve (28), the eighth butterfly valve (29), the ninth butterfly valve (30), the tenth butterfly valve (31), the eleventh butterfly valve (32), the twelfth butterfly valve (33), the thirteenth butterfly valve (34), and the fourteenth butterfly valve (35) are detachably connected to the soft water pipe (19), the first connecting riser (20), and the second connecting riser (21), respectively.

7. A method for optimizing the operation and control of an energy storage water tank, employing an integrated thermal and cold storage energy storage water tank as described in any one of claims 5 or 6, characterized in that, The control method includes the following steps: During winter, heat storage and release are achieved through the aforementioned heat storage mechanism; In summer, the cold storage mechanism is used to store and release cold.

8. The optimized operation control method for energy storage water tanks according to claim 7, characterized in that, The phrase "achieving heat storage and release through the heat storage mechanism in winter" includes: The flow path of heating water is S1 and the flow path of cooling water is S2; The heating water flow process S1 includes the following steps: S11. The water flows into the intermediate tank (14) through the primary heat pump, and then into the energy storage tank (1) through the intermediate tank (14). S12, flows into the secondary heat pump (16) through the primary heat pump (15), and then into the cooling tower (18) through the secondary heat pump (16). S13. The water flows into the plate heat exchanger (17) through the secondary heat pump (16), and then into the energy storage tank (1) through the plate heat exchanger (17), passing through the second butterfly valve (23) along the way. The cooling water flow process S2 includes the following steps: S21. The water flows into the secondary heat pump (16) through the cooling tower (18), and then into the primary heat pump (15) through the secondary heat pump (16). S22, The water flows into the plate heat exchanger (17) through the energy storage tank (1), passing through the third butterfly valve (24) along the way. S23. The water flows into the secondary heat pump (16) through the energy storage tank (1), passing through the fifth butterfly valve (26) along the way. S24, flows into the primary heat pump (15) through the intermediate tank (14); S25. Water from the water supply point flows directly into the primary heat pump (15).

9. The optimized operation control method for energy storage water tanks according to claim 7, characterized in that, The step "Storing and releasing cold through the cold storage mechanism in summer" includes: Cooling water flow procedure S3 and softened water flow procedure S4; The cooling water flow procedure S3 includes the following steps: S31, The water flows into the intermediate tank (14) through the primary heat pump (15), and then into the energy storage tank (1) through the intermediate tank (14). S32, the water flows into the plate heat exchanger (17) through the first-stage heat pump (15), and then into the energy storage tank (1) through the plate heat exchanger (17), passing through the first butterfly valve (22) along the way. S33, flowing into the secondary heat pump (16) through the primary heat pump (15); S34. Water from the water supply point flows directly into the energy storage tank (1) through the plate heat exchanger (17), passing through the seventh butterfly valve (28) along the way. The softened water flow process S4 includes the following steps: S41, flows into the primary heat pump (15) through the intermediate tank (14). S42, flows into the first-stage heat pump (15) through the plate heat exchanger (17); S43. The water flows into the energy storage tank (1) through the secondary heat pump (16), passing through the sixth butterfly valve (27) along the way. S44. The water flows into the plate heat exchanger (17) through the energy storage tank (1), passes through the fourth butterfly valve (25) along the way, and flows into the first-stage heat pump (15) through the plate heat exchanger (17). S45, flows into the secondary heat pump (16) through the plate heat exchanger (17), and then into the cooling tower (18) through the secondary heat pump (16).

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