Energy storage battery heat dissipation system and control method

Abstract

The invention discloses an energy storage battery heat dissipation system and a control system, the energy storage battery heat dissipation system comprises a controller, a refrigerant system and a chilled water system, and the chilled water system can exchange heat with the refrigerant system; the refrigerant system comprises a condenser and further comprises a condenser auxiliary module, a first control valve, a second control valve and a temperature detection module, the condenser auxiliary module is arranged at an air inlet of the condenser, and the inlet end of the condenser auxiliary module is connected with the water supply end of the chilled water system through the first control valve; the outlet end of the condenser auxiliary module is connected with the water return end of the chilled water system through a second control valve; the temperature detection module is used for sending temperature information to the controller, and the controller is used for generating a first control signal for controlling the first control valve and the second control valve to be switched on under the condition that the temperature exceeds a first preset temperature. The condenser is assisted and reinforced by means of the chilled water system, the cost is low, and rapid problem solving of an engineering project is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage battery heat dissipation, and particularly relates to an energy storage battery heat dissipation system and a control method. Background Art

[0002] Extreme high temperature weather can have various impacts on air-cooled chillers. For example, the heat dissipation capacity of the condenser decreases, the compressor load increases, the heat absorption capacity of the evaporator decreases, the energy efficiency ratio of the unit decreases, and even high-pressure protection causes the unit to shut down, which can cause thermal runaway of energy storage batteries, with serious consequences.

[0003] Currently, the main method to solve the impact of extreme high temperature weather on air-cooled chillers in the energy storage battery heat dissipation system is to optimize the structure of the condenser itself. While the cost increases significantly, it is also not conducive to quickly solving problems in engineering projects. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art to a certain extent. For this purpose, the present invention provides an energy storage battery heat dissipation system and a control method.

[0005] To achieve the above object, the present invention adopts the following technical solution: An energy storage battery heat dissipation system includes a controller, a refrigerant system, and a chilled water system. The chilled water system can exchange heat with the refrigerant system to dissipate heat from the energy storage battery. The refrigerant system includes a condenser. The refrigerant system further includes a condenser auxiliary module, a first control valve, a second control valve, and a temperature detection module. The condenser auxiliary module is arranged at the air inlet of the condenser, and the inlet end of the condenser auxiliary module is connected to the water supply end of the chilled water system through the first control valve, and the outlet end of the condenser auxiliary module is connected to the water return end of the chilled water system through the second control valve.

[0006] The temperature detection module is used to send temperature information to the controller. The first control valve and the second control valve are used to conduct according to the first control signal sent by the controller. The controller is used to generate a first control signal for controlling the first control valve and the second control valve to conduct when the temperature exceeds a first preset temperature.

[0007] Applying the present application has the following beneficial effects: The condenser auxiliary module is provided and conducts when the temperature exceeds the first preset temperature. The condenser auxiliary module obtains cold water from the water supply end of the chilled water system, exchanges heat with the condenser and warms up, and then drains to the water return end of the chilled water system. The present application uses the chilled water system to assist and strengthen the condenser without separately designing a complete set of water systems. The cost is relatively low, which is conducive to quickly solving problems in engineering projects.

[0008] Preferably, the condenser auxiliary module includes a heat absorption pipe and a first fin, and the first fin is disposed on the heat absorption pipe; an inlet of the heat absorption pipe forms an inlet end of the condenser auxiliary module, and an outlet of the heat absorption pipe forms an outlet end of the condenser auxiliary module; the condenser includes a condensation pipe and a second fin, the second fin is disposed on the condensation pipe, and the condensation pipe is disposed opposite to the heat absorption pipe.

[0009] Preferably, the second fin on one side of the condensation pipe facing the heat absorption pipe is attached to the first fin on one side of the heat absorption pipe facing the condensation pipe.

[0010] Preferably, a plurality of nozzles are disposed on one side of the heat absorption pipe facing the condensation pipe, and each nozzle is provided with a third control valve for opening or closing the nozzle;

[0011] The third control valve is configured to be turned on according to a second control signal sent by the controller, and the controller is further configured to generate a second control signal for controlling the third control valve to be turned on when the temperature exceeds a second preset temperature, and the second preset temperature is greater than the first preset temperature.

[0012] Preferably, a humidity detection module is further included, and the controller is further configured to receive humidity information sent by the humidity detection module and compare the humidity with a preset humidity when the third control valve is in an on state; when the humidity is greater than the preset humidity, a third control signal for controlling the third control valve to be turned off is generated; the third control valve is further configured to be turned off according to the third control signal sent by the controller.

[0013] Preferably, the chilled water system includes a chilled water circulation loop, a water pump, a water tank, and a chilled water coil, and the water pump, the water tank, and the chilled water coil are all disposed on the chilled water circulation loop;

[0014] The refrigerant system includes a refrigerant circulation loop, an evaporation coil, a compressor, and a throttling device, and the evaporation coil, the compressor, and the throttling device are all disposed on the refrigerant circulation loop, and the evaporation coil is disposed opposite to the chilled water coil for heat exchange.

[0015] Preferably, the chilled water circulation loop includes a chilled water supply pipe and a chilled water return pipe, an outlet of the chilled water supply pipe is connected to an inlet end of the energy storage battery, and an inlet of the chilled water supply pipe is connected to an outlet of the chilled water coil; an outlet of the chilled water return pipe is connected to an inlet of the chilled water coil, and an inlet of the chilled water return pipe is connected to an outlet end of the energy storage battery;

[0016] The inlet of the heat absorption pipe is communicated with the chilled water supply pipe through a first pipeline, and the first control valve is arranged on the first pipeline; the outlet of the heat absorption pipe is communicated with the chilled water return pipe through a second pipeline, and the second control valve is arranged on the second pipeline.

[0017] Preferably, the water pump and the water tank are arranged on the chilled water supply pipe or on the chilled water return pipe;

[0018] When the water pump and the water tank are arranged on the chilled water supply pipe, the connection position of the first pipeline and the chilled water supply pipe is located upstream of the water tank;

[0019] When the water pump and the water tank are arranged on the chilled water return pipe, the connection position of the second pipeline and the chilled water return pipe is located downstream of the water tank.

[0020] The present invention also provides a control method for dissipating heat from the energy storage battery. Using the energy storage battery heat dissipation system provided in the first aspect of the present invention, it includes:

[0021] When the temperature exceeds a first preset temperature, control the first control valve and the second control valve to conduct, so that the heat of the condenser is transferred to the heat absorption pipe;

[0022] After the first control valve and the second control valve are conducted, and when the temperature exceeds a second preset temperature, control the third control valve to conduct to spray the condenser; the second preset temperature is greater than the first preset temperature.

[0023] Preferably, after the third control valve is conducted, the method further includes:

[0024] When the humidity exceeds a preset humidity, control the third control valve to turn off to stop spraying the condenser.

[0025] The reasoning process of the beneficial effects of the control method provided by the present invention is similar to that of the aforementioned energy storage battery heat dissipation system, and will not be elaborated here.

[0026] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and the drawings. The best embodiments or means of the present invention will be shown in detail in combination with the drawings, but it is not a limitation to the technical solution of the present invention. In addition, these features, elements and components appear multiple times in the following text and drawings, and are marked with different symbols or numbers for convenience of representation, but all represent components with the same or similar structures or functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the drawings:

[0028] Figure 1 This is a schematic diagram of the system structure of the present invention.

[0029] Figure 2 This is a flowchart of the control method of the present invention.

[0030] Among them, 10 is a condenser; 11 is a condensing pipe; 12 is a second fin; 21 is a heat absorption pipe; 22 is a first fin; 23 is a nozzle; 31 is a first control valve; 32 is a second control valve; 41 is a throttling device; 42 is a compressor; 43 is an evaporation coil; 51 is a chilled water coil; 52 is a water pump; 53 is a water tank; 61 is a water supply end; 62 is a water return end. Specific embodiments

[0031] The following describes in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. Based on the embodiments in the embodiments, it is intended to explain the present invention and should not be construed as a limitation of the present invention.

[0032] As used herein, the phrase "one embodiment" or "example" or "instance" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in one embodiment" at various positions in the specification does not necessarily refer to the same embodiment.

[0033] Extremely high temperature weather has many impacts on air-cooled chillers. For example: the heat dissipation capacity of the condenser decreases; the load on the compressor increases; the heat absorption capacity of the evaporator decreases; the energy efficiency ratio of the unit decreases; and even high-pressure protection causes the unit to shut down, which can cause thermal runaway in the field of energy storage batteries, and the consequences are very serious.

[0034] In related technologies, there are the following several ways to solve the impacts of extremely high temperature weather on air-cooled chillers:

[0035] 1. Increase the fin area of the condenser to increase the contact area with air;

[0036] 2. Select appropriate materials or methods to improve the thermal conductivity of the fins;

[0037] 3. Optimize the fan or air duct of the condenser to strengthen the air volume or optimize the air direction;

[0038] 4. Multiple units are connected in parallel. Using the idea of multi-connected units or air-cooled modular units, multiple units are connected in parallel, and each unit can share the cooling load.

[0039] 5. Spray the condenser: (1) Directly spray water mist on the surface of the condenser fins to absorb the heat of the condenser, and the heat is discharged into the air after evaporation; (2) Set a spray device at the air inlet to lower the inlet air temperature of the condenser (lower than the ambient temperature).

[0040] However, the above several solutions all have disadvantages, among which:

[0041] 1. Increase the fin area of the condenser to increase the contact area with the air: On the one hand, this solution increases the cost, and on the other hand, the benefit of simply increasing the fin area is limited (because too many fins will block the air duct, which may cause a decrease in air volume or an increase in the power consumption of the fan).

[0042] 2. Select a suitable material or method to increase the thermal conductivity of the fins; Generally, the thermal conductivity of the fins of a water chiller is already very high. If the thermal conductivity is to be made higher, the cost will increase significantly.

[0043] 3. Optimize the fan or air duct of the condenser to strengthen the air volume or optimize the air direction; Adjusting the fan or air duct is equivalent to re-designing the structure of the unit, which is not conducive to quickly solving problems in engineering projects.

[0044] 4. Multiple units in parallel; The initial equipment cost of multiple units in parallel is relatively high, especially for small projects, which will not be considered; The parallel connection of units involves more complex control logic, greatly increases the operation and maintenance difficulty of the equipment, and reduces the operation and maintenance efficiency.

[0045] 5. Spray the condenser; On the one hand, water resources are limited, especially in arid areas; On the other hand, designing a complete set of spray systems separately increases the design burden and operation and maintenance complexity; In addition, spraying is not suitable for any high-temperature weather. When the air is not only at a high temperature but also at a high humidity, the evaporation efficiency of water drops significantly, and the spraying effect drops significantly.

[0046] In view of this, referring to Figure 1 , a first aspect of the present invention provides an energy storage battery heat dissipation system, including a controller, a refrigerant system, and a chilled water system. The chilled water system can exchange heat with the refrigerant system to dissipate heat from the energy storage battery; The refrigerant system includes a condenser 10, and the refrigerant system further includes a condenser auxiliary module 20, a first control valve 31, a second control valve 32, and a temperature detection module. The condenser auxiliary module 20 is arranged at the air inlet of the condenser 10, and the inlet end of the condenser auxiliary module 20 is connected to the water supply end 61 of the chilled water system through the first control valve 31, and the outlet end of the condenser auxiliary module 20 is connected to the water return end 62 of the chilled water system through the second control valve 32;

[0047] The temperature detection module is used to send temperature information to the controller. The first control valve 31 and the second control valve 32 are used to conduct according to the first control signal sent by the controller. The controller is used to obtain the temperature based on the temperature information and generate a first control signal for controlling the first control valve 31 and the second control valve 32 to conduct when the temperature exceeds the first preset temperature.

[0048] A condenser auxiliary module 20 is provided, which conducts when the temperature exceeds the first preset temperature. The condenser auxiliary module 20 obtains cold water from the water supply end of the chilled water system, exchanges heat with the condenser to raise the temperature, and then discharges it to the water return end of the chilled water system. This application uses the chilled water system to assist and strengthen the condenser without designing a complete set of water systems separately. The cost is relatively low, which is conducive to quickly solving problems in engineering projects.

[0049] In some embodiments, the condenser auxiliary module 20 includes a heat absorption tube 21 and a first fin 22, and the first fin 22 is arranged on the heat absorption tube 21. The inlet of the heat absorption tube 21 forms the inlet end of the condenser auxiliary module 20, and the outlet of the heat absorption tube 21 forms the outlet end of the condenser auxiliary module 20. The condenser 10 includes a condensing tube 11, a second fin 12 and a fan 13. The fan 13 is located at the rear side of the condensing tube 11, the second fin 12 is arranged on the condensing tube 11, and the condensing tube 11 is arranged opposite to the heat absorption tube 21. The second fin 12 on the side of the condensing tube 11 facing the heat absorption tube 21 is in contact with the first fin 22 on the side of the heat absorption tube 21 facing the condensing tube 11.

[0050] In the above solution, the condenser auxiliary module 20 obtains chilled water by means of the chilled water system. The chilled water system is part of an air-cooled chiller, and a complete set of water systems is not designed separately. In addition, there is no spraying in this solution, so there is no continuous consumption of water.

[0051] Furthermore, a plurality of nozzles 23 are arranged on the side of the heat absorption tube 21 facing the condensing tube 11, and each nozzle 23 is provided with a third control valve for opening or closing the nozzle. The third control valve is used to conduct according to the second control signal sent by the controller. The controller is also used to generate a second control signal for controlling the third control valve to conduct when the temperature exceeds the second preset temperature, and the second preset temperature is greater than the first preset temperature.

[0052] It further includes a humidity detection module. The controller is also used to receive the humidity information sent by the humidity detection module when the third control valve is in the conducting state, and compare the humidity with the preset humidity. When the humidity is greater than the preset humidity, a third control signal for controlling the third control valve to close is generated. The third control valve is also used to close according to the third control signal sent by the controller.

[0053] By setting up a humidity detection module and installing nozzles on the heat absorption pipe 21, the technical solution for spraying the condenser is optimized. The spraying method is used, but not only the spraying method (the idea of evaporation heat absorption) is used, but also the idea of heat conduction is used. To a certain extent, three disadvantages of spraying the condenser mentioned in the related technology are solved: (1) In arid areas, this heat dissipation system can abandon spraying and rely only on the idea of heat conduction; (2) Instead of designing a complete set of spraying systems separately, the chilled water system of the air-cooled chiller is utilized; (3) When the ambient air is at high temperature and high humidity, spraying can be abandoned and only the idea of heat conduction is relied on.

[0054] In this way, when the solution without nozzles (i.e., without spraying) still cannot meet the requirements, spraying can be carried out through the nozzles installed on the heat absorption pipe: The condenser is affected by both the heat conduction in the solution without nozzles (i.e., without spraying) and the evaporation of water on the surface of the condenser to absorb the heat of the condenser. Moreover, the sprayed water mist can also reduce the inlet air temperature, increase the temperature difference between the inlet air and the surface of the condenser, and strengthen the heat dissipation of the condenser. The condenser is strengthened from three different angles at the same time, and its heat dissipation capacity is greatly improved, indirectly greatly improving the refrigeration capacity on the evaporator side.

[0055] In some embodiments, the chilled water system includes a chilled water circulation loop, a water pump 52, a water tank 53, and a chilled water coil 51. The water pump 52, the water tank 53, and the chilled water coil 51 are all arranged on the chilled water circulation loop;

[0056] The refrigerant system includes a refrigerant circulation loop, an evaporation coil 43, a compressor 42, and a throttling device 41. The evaporation coil 43, the compressor 42, and the throttling device 41 are all arranged on the refrigerant circulation loop, and the evaporation coil 43 is arranged opposite to the chilled water coil 51 for heat exchange.

[0057] In some embodiments, the chilled water circulation loop includes a chilled water supply pipe and a chilled water return pipe. The outlet of the chilled water supply pipe is connected to the liquid inlet end of the energy storage battery, and the inlet of the chilled water supply pipe is connected to the outlet of the chilled water coil; the outlet of the chilled water return pipe is connected to the inlet of the chilled water coil, and the inlet of the chilled water return pipe is connected to the liquid outlet end of the energy storage battery;

[0058] The inlet of the heat absorption pipe 21 is communicated with the chilled water supply pipe through a first pipeline, and a first control valve 31 is arranged on the first pipeline; the outlet of the heat absorption pipe 21 is communicated with the chilled water return pipe through a second pipeline, and a second control valve 32 is arranged on the second pipeline.

[0059] In some embodiments, the water pump 52 and the water tank 53 are disposed on the chilled water supply pipe or on the chilled water return pipe;

[0060] When the water pump 52 and the water tank 53 are disposed on the chilled water supply pipe, the connection position of the first pipeline and the chilled water supply pipe is upstream of the water tank 53;

[0061] When the water pump 52 and the water tank 53 are disposed on the chilled water return pipe, the connection position of the second pipeline and the chilled water return pipe is downstream of the water tank 53.

[0062] The present invention comprehensively uses the two major ideas of "heat conduction" and "evaporation heat absorption", adds a condenser auxiliary module to the condenser, and a new condenser module is composed of the condenser auxiliary module and the condenser. The condenser can be affected by heat conduction; it can also be affected by the evaporation of water on the surface of the condenser to absorb the heat of the condenser; moreover, the sprayed water mist can also reduce the inlet air temperature, increase the temperature difference between the inlet air and the surface of the condenser, and strengthen the heat dissipation of the condenser. The condenser is strengthened from three different angles at the same time, and the heat dissipation capacity is greatly improved, indirectly greatly improving the refrigeration capacity of the refrigerant system.

[0063] Secondly, the present invention does not separately design a complete set of spraying systems, but uses the chilled water system of the air-cooled chiller. The condenser is affected by heat conduction; it is also affected by the evaporation of water on the surface of the condenser to absorb the heat of the condenser; moreover, the sprayed water mist can also reduce the inlet air temperature, increase the temperature difference between the inlet air and the surface of the condenser, and strengthen the heat dissipation of the condenser. The condenser is strengthened from three different angles at the same time, and this multi-angle strengthening cannot be achieved in general spraying systems.

[0064] Referring to Figure 2 , the present invention also provides a control method for dissipating heat from the energy storage battery. Using the energy storage battery heat dissipation system provided in the first aspect of the present invention, it includes the following steps:

[0065] S110, when the temperature exceeds the first preset temperature, control the first control valve and the second control valve to conduct, so that the heat of the condenser is transferred to the heat absorption pipe;

[0066] S120, after the first control valve and the second control valve are conducted, and when the temperature exceeds the second preset temperature, control the third control valve to conduct to spray the condenser; the second preset temperature is greater than the first preset temperature.

[0067] S130, after the third control valve is conducted, when the humidity exceeds the preset humidity, control the third control valve to turn off to stop spraying the condenser.

[0068] In some other embodiments, it is also possible to first determine whether the condenser is suitable for spraying, and then control the condenser auxiliary module 20 according to the difference between the operating power and the cooling load of the refrigerant system;

[0069] In the case where the condenser is not suitable for spraying, for example, in some arid regions, spraying is abandoned and only the idea of heat conduction is relied on; in the case where the cooling load cannot be satisfied, the first control valve and the second control valve are opened, but the third control valve is closed and no spraying is performed; in the case where the cooling load is satisfied, no action is taken.

[0070] In the case where the condenser is suitable for spraying, it is determined whether the cooling load is satisfied. In the case where the cooling load is satisfied, no action is taken; in the case where the cooling load is not satisfied, the difference between the operating power and the cooling load of the refrigerant system is calculated. When the difference is greater than a preset difference, the first control valve, the second control valve, and the third control valve are opened, and spraying is performed while the heat absorption pipe is operating; when the difference is less than the preset difference, the first control valve and the second control valve are opened, but the third control valve is closed and no spraying is performed.

[0071] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A heat dissipation system for an energy storage battery, comprising a controller, a refrigerant system, and a chilled water system, wherein the chilled water system can perform heat exchange with the refrigerant system to dissipate heat for the energy storage battery; the refrigerant system comprises a condenser (10), characterized in that: The refrigerant system further comprises a condenser auxiliary module (20), a first control valve (31), a second control valve (32) and a temperature detection module, wherein the condenser auxiliary module (20) is arranged at the air inlet of the condenser (10), and the inlet end of the condenser auxiliary module (20) is connected to the water supply end (61) of the chilled water system through the first control valve (31), and the outlet end of the condenser auxiliary module (20) is connected to the water return end (62) of the chilled water system through the second control valve (32); The temperature detection module is used to send temperature information to the controller, the first control valve (31) and the second control valve (32) are used to be connected according to a first control signal sent by the controller, and the controller is used to generate a first control signal for controlling the first control valve (31) and the second control valve (32) to be connected when the temperature exceeds a first preset temperature.

2. The energy storage battery heat dissipation system according to claim 1, characterized in that: The condenser auxiliary module (20) comprises a heat absorption tube (21) and a first fin (22), and the first fin (22) is arranged on the heat absorption tube (21); the inlet of the heat absorption tube (21) is formed as the inlet end of the condenser auxiliary module (20), and the outlet of the heat absorption tube (21) is formed as the outlet end of the condenser auxiliary module (20); the condenser (10) comprises a condensation tube (11) and a second fin (12), and the second fin (12) is arranged on the condensation tube (11), and the condensation tube (11) and the heat absorption tube (21) are arranged opposite to each other.

3. The energy storage battery heat dissipation system according to claim 2, characterized in that: The second fin (12) on the side of the condensing tube (11) facing the heat absorbing tube (21) is in contact with the first fin (22) on the side of the heat absorbing tube (21) facing the condensing tube (11).

4. The energy storage battery heat dissipation system according to claim 2, characterized in that: A plurality of nozzles (23) are arranged on a side of the heat absorption tube (21) facing the condensation tube (11), and each of the nozzles (23) is provided with a third control valve for opening or closing the nozzle; The third control valve is used to be turned on according to a second control signal sent by the controller, and the controller is also used to generate a second control signal to control the conduction of the third control valve when the temperature exceeds a second preset temperature, and the second preset temperature is greater than the first preset temperature.

5. The energy storage battery heat dissipation system according to claim 4, characterized in that: It also includes a humidity detection module, and the controller is also used to receive humidity information sent by the humidity detection module and compare the humidity with the preset humidity when the third control valve is turned on; when the humidity is greater than the preset humidity, a third control signal is generated to control the third control valve to shut down; the third control valve is also used to shut down according to the third control signal sent by the controller.

6. The energy storage battery heat dissipation system according to claim 5, characterized in that: The chilled water system comprises a chilled water circulation loop, a water pump (52), a water tank (53) and a chilled water coil (51), wherein the water pump (52), the water tank (53) and the chilled water coil (51) are all arranged on the chilled water circulation loop; The refrigerant system comprises a refrigerant circulation circuit, an evaporating coil (43), a compressor (42) and a throttling device (41); the evaporating coil (43), the compressor (42) and the throttling device (41) are all arranged on the refrigerant circulation circuit, and the evaporating coil (43) is arranged opposite to the chilled water coil (51) to perform heat exchange.

7. The energy storage battery heat dissipation system according to claim 6, characterized in that: The chilled water circulation loop includes a chilled water supply pipe and a chilled water return pipe, the outlet of the chilled water supply pipe is connected to the liquid inlet of the energy storage battery, and the inlet of the chilled water supply pipe is connected to the outlet of the chilled water coil; the outlet of the chilled water return pipe is connected to the inlet of the chilled water coil, and the inlet of the chilled water return pipe is connected to the liquid outlet of the energy storage battery; The inlet of the heat absorption pipe (21) is connected to the chilled water supply pipe through a first pipeline, and the first control valve (31) is arranged on the first pipeline; the outlet of the heat absorption pipe (21) is connected to the chilled water return pipe through a second pipeline, and the second control valve (32) is arranged on the second pipeline.

8. The energy storage battery heat dissipation system according to claim 7, characterized in that: The water pump (52) and the water tank (53) are arranged on the chilled water supply pipe, or on the chilled water return pipe; When the water pump (52) and the water tank (53) are arranged on the chilled water supply pipe, the connection position between the first pipeline and the chilled water supply pipe is located upstream of the water tank (53); When the water pump (52) and the water tank (53) are arranged on the chilled water return pipe, the connection position of the second pipeline and the chilled water return pipe is located downstream of the water tank (53).

9. A control method for dissipating heat from an energy storage battery, characterized in that: The energy storage battery heat dissipation system according to any one of claims 4 to 8 comprises: When the temperature exceeds a first preset temperature, controlling the first control valve and the second control valve to be turned on, so that the heat of the condenser is transferred to the heat absorption pipe; After the first control valve and the second control valve are turned on, and when the temperature exceeds a second preset temperature, the third control valve is controlled to be turned on to spray the condenser; the second preset temperature is greater than the first preset temperature.

10. The control method according to claim 9, characterized in that: After the third control valve is turned on, the method further includes: When the humidity exceeds a preset humidity, the third control valve is controlled to be closed to stop spraying the condenser.

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