Air and water integrated cooling system for battery compartment of electric ship

Abstract

The utility model relates to an air and water integrated cooling system of an electric ship battery compartment, which is characterized in that a flow meter, a temperature and pressure sensor, a water filter, an expansion tank and a booster pump are sequentially arranged on a refrigerant water inlet pipe, the refrigerant water inlet pipe is divided into two paths after being electrically heated, and the two paths are connected into plate heat exchangers of two groups of compression refrigeration systems through inlet pipe ball valves and automatic exhaust valves; the plate heat exchangers of the two compression refrigeration systems are connected with two outlet pipes, the two outlet pipes are provided with check valves and then combined to be connected with a refrigerant water outlet pipe, the refrigerant water inlet pipe between an inlet pipe pressure sensor and a water filter is divided into two overflow pipelines, and the overflow pipelines are connected with the outlet pipes in front of the check valves through overflow control valves and safety overflow valves in sequence. And a refrigerant water inlet pipe in front of the outlet pipe pressure sensor is connected with an electrically heated refrigerant water inlet pipe through a straight-through pipeline with a straight-through control valve. The system is simple in structure, cold supply can be dynamically adjusted and matched according to the use environment, the real-time working condition and the high and low temperature limit working condition, and cooling efficiency and energy consumption are both considered.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cooling system, specifically to a wind and water integrated cooling system of electric ship battery cabin. BACKGROUND

[0002] With the rapid development of new energy ships, the thermal management of power batteries becomes a core problem, and the heat dissipation efficiency of the battery cabin directly affects the endurance, safety and battery life of the ship. Most of the current market solutions adopt a single cooling method, such as pure air cooling, which relies on forced ventilation, but the heat dissipation efficiency drops sharply under special working conditions, such as high temperature environment, and the energy consumption is high. There is also pure water cooling, which has high efficiency, but relies on external water source, and has the risk of pipeline blockage, corrosion, leakage, etc. In addition, in terms of control, the working conditions of electric propulsion of the ship are complex, such as frequent start-stop, speed-up or speed-down of the unit, which leads to large fluctuation range of cooling supply, and cannot dynamically adjust and match the water cooling or air cooling ratio according to the actual working condition, resulting in serious energy waste, which is not conducive to the endurance improvement of the electric ship battery. SUMMARY

[0003] The utility model provides a kind of wind and water integrated cooling system of electric ship battery cabin with simple structure, can dynamically adjust and match cooling according to use environment and real-time working condition, and give consideration to cooling efficiency and energy consumption.

[0004] The utility model discloses a kind of wind and water integrated cooling system of electric ship battery cabin, including two groups of compressed refrigeration system and the refrigerant water inlet, outlet pipe of external load, it is characterized by: the refrigerant water inlet pipe is sequentially provided with inlet pipe flowmeter, inlet pipe temperature sensor, inlet pipe pressure sensor, water filter, expansion tank, booster pump, after electric heating is divided into two ways, two ways are all connected by inlet pipe ball valve, automatic exhaust valve and access two groups of compressed refrigeration system's plate heat exchanger, the plate heat exchanger of two groups of compressed refrigeration system is connected to two outlet pipes, two outlet pipes are set with check valve after being combined and connected refrigerant water outlet pipe, refrigerant water outlet pipe is sequentially provided with outlet pipe pressure sensor, outlet pipe temperature sensor and outlet pipe flowmeter, refrigerant water inlet pipe between inlet pipe pressure sensor and water filter is divided into two overflow pipelines, overflow pipeline is sequentially connected by overflow control valve, safety overflow valve and connects the check valve before outlet pipe, refrigerant water inlet pipe before outlet pipe pressure sensor is connected by straight-through pipeline with direct control valve and connects the refrigerant water inlet pipe after electric heating.

[0005] The plate heat exchanger is provided with a switching tee valve at the inlet on the refrigerant water inlet pipe side, two switching tee valves are connected to a straight cooling tee valve, the straight cooling tee valve is connected to a straight cooling condenser, the straight cooling condenser uses two condenser fans in two condensers of two groups of compressed refrigeration system, and the straight cooling condenser is connected to the refrigerant water outlet pipe through a one-way valve and two outlet pipes.

[0006] The compression refrigeration system comprises a compressor, a condenser connected to the exhaust outlet of the compressor via a high-pressure switch, an exhaust temperature sensor, an exhaust pressure sensor and a safety valve, a condenser connected to the exhaust outlet of the compressor via a condenser fan, a drying filter, an expansion valve and a plate heat exchanger compression refrigeration side, and a plate heat exchanger compression refrigeration side connected to the exhaust outlet of the compressor via a return ball valve, a return temperature sensor, a return pressure sensor and a low-pressure switch.

[0007] The pipeline before the safety valve is also connected to the pipeline before or after the return ball valve via a bypass pipeline, and the bypass pipeline is provided with a bypass control valve and an adjustable valve in sequence.

[0008] The liquid adding pipeline on the expansion tank is provided with a liquid adding control valve and a liquid adding check valve.

[0009] The two booster pumps are connected in parallel to the refrigerant water inlet pipeline, and a booster ball valve is arranged before and after each booster pump.

[0010] A booster check valve is arranged after the two booster pumps.

[0011] The condenser fan is arranged on the exhaust side of the condenser, and the direct cooling condenser is arranged on the air inlet side of the two condensers.

[0012] The condenser fan is arranged on the air inlet side of the condenser, and the direct cooling condenser is arranged between the two condensers and the condenser fan.

[0013] The beneficial effects of the utility model are as follows: two compression refrigeration systems are adopted, which can meet the requirements of one standby and one use, and can also meet the requirements of double system use, and can meet the cooling requirements under the condition of ordinary power or larger power demand of a ship, especially the refrigeration load demand under the extreme working condition of electric propulsion speed increase of a ship; in addition, the booster pump can be used in one standby and one use or double pump use, the water speed in the refrigerant water inlet pipeline and the refrigerant water outlet pipeline can be accelerated, and the load cooling capacity can be further improved; under the condition of low-temperature cooling demand, when the compression refrigeration unit is started in single opening or minimum power, the straight-through control valve opening degree of the straight-through pipeline can be adjusted to adjust the refrigerant water flow of the straight-through part, the lower-temperature cooling demand can be met, the bypass valve adjustable valve can be adjusted to adjust the exhaust direct return to the compressor, and the high-precision regulation and control demand of the compression refrigeration capacity can be met; under the condition of lower-temperature cooling demand, when the compression refrigeration unit is not started, the refrigerant water inlet pipeline is connected to the direct cooling three-way valve through the switching of the three-way valve, the refrigerant water is directly air-cooled in the direct cooling condenser through the cooling fan, and the cooled refrigerant water is sent to the refrigerant water outlet pipeline for load supply, the overall system dynamically adjusts and matches the demand of the battery cabin heat load, the adjustment fluctuation range is large, and the intelligent regulation and control use and energy consumption control of the system are considered. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model system diagram is provided.

[0015] Fig. Compressor 1, high pressure switch 2, exhaust temperature sensor 3, exhaust pressure sensor 4, safety valve 5, condenser 6, condenser fan 7, drying filter 8, expansion valve 9, plate heat exchanger 10, refrigerant water inlet pipe 11, inlet pipe flow meter 12, inlet pipe temperature sensor 13, inlet pipe pressure sensor 14, water filter 15, expansion tank 16, liquid filling control valve 17, liquid filling check valve 18, booster ball valve 19, booster pump 20, booster check valve 21, electric heating 22, inlet pipe ball valve 23, automatic exhaust valve 24, switching tee valve 25, direct cooling tee valve 26, direct cooling condenser 27, plate exchanger outlet pipe 28, check valve 29, overflow line 30, overflow control valve 31, safety overflow valve 32, refrigerant water outlet pipe 33, outlet pipe pressure sensor 34, outlet pipe temperature sensor 35, outlet pipe flow meter 36, straight-through line 37, straight-through control valve 38, bypass line 39, bypass control valve 40, adjustable valve 41. DETAILED DESCRIPTION

[0016] Further illustrated below are the embodiments and the accompanying drawings.

[0017] Figure 1 As shown, a wind-water integrated cooling system for an electric ship battery cabin includes two sets of compression refrigeration systems and refrigerant water inlet pipe 11 and refrigerant water outlet pipe 33 for external loads.

[0018] The two sets of compression refrigeration systems are arranged side by side. The compression refrigeration system includes compressor 1, high pressure switch 2, exhaust temperature sensor 3, exhaust pressure sensor 4, safety valve 5, condenser 6, condenser fan 7, drying filter 8, expansion valve 9, and plate heat exchanger 10. The exhaust of compressor 1 is connected to condenser 6 via high pressure switch 2, exhaust temperature sensor 3, exhaust pressure sensor 4, safety valve 5, and condenser fan 7. The condenser 6 is connected to the compression refrigeration side of plate heat exchanger 10 via drying filter 8 and expansion valve 9. The compression refrigeration side of plate heat exchanger 10 is connected to the compressor return gas via return gas ball valve, return gas temperature sensor, return gas pressure sensor, and low pressure switch. The above structure of the return gas is a prior art, and therefore no mark is made in the accompanying drawings.

[0019] The refrigerant water inlet pipe 11 is provided with an inlet pipe flow meter 12, an inlet pipe temperature sensor 13, an inlet pipe pressure sensor 14, a water filter 15, an expansion tank 16, a liquid feeding pipe connected to a liquid feeding control valve 17 and a liquid feeding check valve 18, two paths after the expansion tank, a booster ball valve 19, a booster pump 20, a booster valve 21 and a booster ball valve in sequence, an electric heater 22 after the two paths are combined, two paths after the electric heater, an inlet pipe ball valve 23, an automatic exhaust valve 24 and a switching tee valve 25 in sequence, two plate heat exchangers 10 of two compression refrigeration systems, an outlet pipe 28 of the plate heat exchangers 10, a check valve 29 provided on the outlet pipe 28, an overflow pipe 30 connected to the inlet pipe 11 of the water filter 15 before the check valve 29, an overflow control valve 31 and a safety overflow valve 32 in sequence on the overflow pipe 30, a direct cooling tee valve 26 connected to the third path of the two switching tee valves 25, two direct cooling condensers 27 provided on the direct cooling tee valve 26 corresponding to two condenser fans 7 of the two compression refrigeration units, a refrigerant water outlet pipe 33 connected to the two outlet pipes after the direct cooling condensers, an outlet pipe pressure sensor 34, an outlet pipe temperature sensor 35 and an outlet pipe flow meter 36 in sequence on the refrigerant water outlet pipe 33, a direct pipe 37 connected between the refrigerant water inlet pipe 11 after the electric heater 22 and the refrigerant water outlet pipe 33 before the outlet pipe pressure sensor 34, and a direct control valve 38 provided on the direct pipe 37.

[0020] On the basis of the embodiment, a bypass pipe can also be connected to the pipe before or after the gas return ball valve on the pipe before the safety valve, and a bypass control valve and an adjustable valve are provided in sequence on the bypass pipe.

Claims

1. A wind-water integrated cooling system for an electric ship battery cabin, comprising two sets of compression refrigeration systems and refrigerant water in-out pipes for external loads, characterized in that: The inlet pipe of the refrigerant water is provided with an inlet pipe flow meter, an inlet pipe temperature sensor, an inlet pipe pressure sensor, a water filter, an expansion tank, a booster pump, and an electric heating device in sequence, and the refrigerant water is divided into two paths after the electric heating device, and the two paths are connected to the plate heat exchangers of two compression refrigeration systems through an inlet pipe ball valve and an automatic exhaust valve, the plate heat exchangers of the two compression refrigeration systems are connected to two outlet pipes, the two outlet pipes are provided with check valves and then combined into an outlet pipe, the outlet pipe is provided with an outlet pipe pressure sensor, an outlet pipe temperature sensor and an outlet pipe flow meter in sequence, the refrigerant water inlet pipe between the inlet pipe pressure sensor and the water filter is divided into two overflow pipes, the overflow pipes are connected to the outlet pipe before the check valve through an overflow control valve and a safety overflow valve, and the refrigerant water inlet pipe before the outlet pipe pressure sensor is connected to the refrigerant water inlet pipe after the electric heating device through a bypass pipe with a bypass control valve.

2. The wind-water integrated cooling system of an electric ship battery compartment according to claim 1, characterized in that: The plate heat exchangers are provided with switching three-way valves at the inlet ports of the refrigerant water inlet pipes, the two switching three-way valves are connected to a straight cooling three-way valve, the straight cooling three-way valve is connected to a straight cooling condenser, the straight cooling condenser uses two condenser fans of two condensers in the two compression refrigeration systems, and the straight cooling condenser is connected to the refrigerant water outlet pipe through a one-way valve and the two outlet pipes.

3. The wind-water integrated cooling system of an electric ship battery compartment according to claim 1 or 2, characterized in that: The compression refrigeration system comprises a compressor, and the exhaust of the compressor is connected to a condenser through a high-pressure switch, an exhaust temperature sensor, an exhaust pressure sensor and a safety valve, the condenser is connected to the compression refrigeration side of the plate heat exchanger through a drying filter and an expansion valve, and the compression refrigeration side of the plate heat exchanger is connected to the compressor through a return air ball valve, a return air temperature sensor, a return air pressure sensor and a low-pressure switch.

4. The wind-water integrated cooling system of an electric ship battery compartment according to claim 3, characterized in that: The pipeline before the safety valve is further connected to the pipeline before or after the return air ball valve through a bypass pipeline, and a bypass control valve and an adjustable valve are arranged on the bypass pipeline in sequence.

5. The wind-water integrated cooling system of an electric ship battery compartment according to claim 1, characterized in that: A liquid adding pipe is arranged on the expansion tank, and a liquid adding control valve and a liquid adding one-way valve are arranged on the liquid adding pipe.

6. The wind-water integrated cooling system of an electric ship battery compartment according to claim 1, characterized in that: Two booster pumps are arranged in parallel on the refrigerant water inlet pipe, and a booster ball valve is arranged before and after each booster pump.

7. The wind-water integrated cooling system of an electric ship battery compartment according to claim 6, characterized in that: A booster check valve is arranged after the two booster pumps.

8. The wind-water integrated cooling system of an electric ship battery compartment according to claim 2, characterized in that: The condenser fan is arranged on the exhaust side of the condenser, and the straight cooling condenser is arranged on the air inlet side of the two condensers.

9. The wind-water integrated cooling system of an electric ship battery compartment according to claim 2, characterized in that: The condenser fan is arranged on the air inlet side of the condenser, and the straight cooling condenser is arranged between the two condensers and the condenser fan.

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