Ship power battery temperature adjusting system and ship

Abstract

The utility model provides a ship power battery temperature adjusting system and a ship. The ship power battery temperature adjusting system comprises a compressor unit, a refrigerant water pump, a heat exchanger, a temperature adjusting liquid circulating pump set, a proportional three-way valve, a battery temperature control PLC, a temperature sensor and a flow sensor. The compressor unit is matched with the refrigerant water pump, and the outlet water temperature of the compressor unit is controlled to be kept at a first set temperature; the electromagnetic proportional three-way valve controls the amount of circulating water entering the heat exchanger from the compressor unit; the temperature sensor and the flow sensor are used for monitoring the flow and the temperature of cooling water in the temperature adjusting system; and the temperature adjusting liquid circulating pump is used for circulating the cooling water in the temperature adjusting system, performing heat exchange with the heat exchanger, and adjusting the working temperature of the ship power battery to a second set working temperature through the electromagnetic proportional three-way valve. According to the technical scheme, cost is saved through energy conservation and consumption reduction, the overall performance of the battery pack can be effectively improved, navigation safety is guaranteed, and the requirement for sustainable development of the shipping industry is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship construction, and in particular relates to a ship power battery temperature regulating system and a ship. Background Art

[0002] At present, large-scale pure electric propulsion ships that need to be equipped with large-capacity power battery packs are still in the research and development stage, and there is no mature technology to realize the temperature regulation system of large-capacity power battery packs. According to relevant experimental data, the general power battery charging and discharging operating temperature between 15℃ and 25℃ has excellent performance and is relatively safe; most lithium-ion batteries can only ensure working performance above 0℃. As the ambient temperature drops, the battery discharge capacity drops rapidly.

[0003] As the temperature decreases, the polarization resistance of the battery increases, and the resistance of the electrochemical reaction increases, resulting in a decrease in battery capacity; excessive battery temperature may lead to thermal runaway, severe life attenuation, and charging and discharging restrictions. Referring to new energy vehicles, the temperature control of power batteries is mainly air cooling, and the air cooling method is divided into natural cooling and forced convection heat exchange. The cooling effect can only meet the needs of small-power power battery packs such as automobiles, and the placement of the battery box is also relatively high, which is far from meeting the installed capacity requirements of ships.

[0004] Therefore, how to provide a ship power battery temperature regulation system and ship to save energy, reduce consumption to save costs, effectively improve the overall performance of the battery pack, ensure navigation safety, and meet the requirements of sustainable development of the shipping industry has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] The embodiment of the utility model provides a ship power battery temperature regulation system and a ship, which can effectively improve the overall performance of the battery pack, ensure navigation safety, and meet the requirements of sustainable development of the shipping industry by saving energy and reducing consumption to save costs.

[0006] In one embodiment of the utility model, a temperature regulation system for a ship power battery includes: a compressor unit, a refrigerant water pump, a heat exchanger, a temperature regulating liquid circulation pump unit, an electromagnetic proportional three-way valve, a battery temperature control PLC, a temperature sensor and a flow sensor;

[0007] The compressor unit is used to cooperate with the refrigerant water pump to control the outlet water temperature of the compressor unit to be maintained at a first set temperature;

[0008] The electromagnetic proportional three-way valve is used to control the amount of circulating water from the compressor unit entering the heat exchanger;

[0009] The temperature sensor and flow sensor are used to monitor the flow and temperature of cooling water in the temperature regulation system;

[0010] The temperature regulating liquid circulation pump is used to circulate the cooling water in the temperature regulating system and perform heat exchange with the heat exchanger, and adjust the operating temperature of the ship power battery to the second set operating temperature through the electromagnetic proportional three-way valve;

[0011] The battery temperature control PLC is arranged between the refrigerant water pump and the heat exchanger, and is used for information control of the temperature control system, data information exchange with the ship system, and expansion of remote control of the temperature control system.

[0012] In another embodiment of the utility model, the temperature regulating liquid circulation pump group adopts a redundant structure in which two temperature regulating liquid circulation pumps are connected in parallel, and a group of stop valves are respectively arranged at the oil outlet and oil return port of each temperature regulating liquid circulation pump.

[0013] In another embodiment of the utility model, the stop valve includes an electric stop valve and a manual stop valve;

[0014] The electric stop valve is arranged between the oil outlet of the temperature regulating liquid circulation pump and the temperature sensor, and the manual stop valve is arranged at the oil return port of the temperature regulating liquid circulation pump.

[0015] Furthermore, the temperature adjustment system includes: a display device;

[0016] The display device is used for information display and human-computer exchange on the temperature adjustment system.

[0017] Further, the compressor unit is a variable frequency refrigerator unit;

[0018] In the cooling mode, the variable frequency refrigerator unit uses a refrigeration circulation pump to allow the cooling water of the refrigerator to exchange heat with the battery cooling water in the heat exchanger, and the three-way valve automatically controls the amount of chilled water flowing through the heat exchanger so that the battery cooling water temperature is constant at the first set working temperature;

[0019] In the heating mode, the refrigerator unit is controlled through the refrigeration circulation pump so that the cooling water of the refrigerator and the battery cooling water exchange heat in the heat exchanger. At the same time, the electromagnetic proportional three-way valve automatically controls the amount of chilled water flowing through the heat exchanger.

[0020] In another embodiment of the present invention, a ship is provided, wherein the ship comprises a temperature regulating system for a ship power battery as described in any one of the above items.

[0021] The beneficial effects brought by the utility model are as follows:

[0022] It can be seen from the above scheme that the embodiment of the utility model provides a ship power battery temperature adjustment system and ship, including: a compressor unit, a refrigerant water pump, a heat exchanger, a temperature regulating liquid circulation pump group, a proportional three-way valve, a battery temperature control PLC, a temperature sensor and a flow sensor; the compressor unit cooperates with the refrigerant water pump to control the outlet water temperature of the compressor unit to remain at the first set temperature; the electromagnetic proportional three-way valve controls the circulating water volume of the compressor unit entering the heat exchanger; the temperature sensor and the flow sensor monitor the flow and temperature of the cooling water in the temperature adjustment system; the temperature regulating liquid circulation pump is used to circulate the cooling water in the temperature adjustment system and exchange heat with the heat exchanger, and adjust the working temperature of the ship power battery to the second set working temperature through the electromagnetic proportional three-way valve. The technical solution of the utility model can effectively improve the overall performance of the battery pack, ensure navigation safety, and meet the requirements of sustainable development of the shipping industry by saving energy and reducing consumption to save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram showing the structure of a ship power battery temperature adjustment system according to an embodiment of the utility model;

[0024] Figure 2 A schematic diagram showing a temperature regulation system for a ship power battery according to an embodiment of the utility model;

[0025] In the figure, 1 is the compressor unit, 2 is the refrigerant water pump, 3 is the heat exchanger, 4 is the temperature control liquid circulation pump group, 5 is the electromagnetic proportional three-way valve, 6 is the battery temperature control PLC, 7 is the temperature sensor, and 8 is the flow sensor. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Temperature is an important factor affecting the performance of lithium-ion batteries, so ensuring effective temperature control is a key link in battery charging and discharging performance, battery thermal characteristics and thermal management. It can achieve battery temperature regulation and control for large-scale ship high-power batteries in charging and discharging conditions, pure electric propulsion conditions, and combined propulsion conditions. At the same time, it can also ensure the temperature performance of the battery in cold and high-temperature environments, so that the battery can be used at the optimal operating temperature, ensuring battery safety and extending the cycle life.

[0028] like Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram showing the structure of a ship power battery temperature regulation system according to an embodiment of the utility model is shown. Figure 2 A schematic diagram of a temperature regulation system for a ship power battery according to an embodiment of the utility model is shown.

[0029] Figure 1 A temperature control system for a ship power battery includes: a compressor unit 1, a refrigerant water pump 2, a heat exchanger 3, a temperature control liquid circulation pump unit 4, an electromagnetic proportional three-way valve 5, a battery temperature control PLC 6, a temperature sensor 7 and a flow sensor 8.

[0030] The compressor unit 1 is used to cooperate with the refrigerant water pump to control the outlet water temperature of the compressor unit to be maintained at a first set temperature;

[0031] An electromagnetic proportional three-way valve 5, used to control the amount of circulating water entering the heat exchanger from the compressor unit;

[0032] The temperature sensor 7 and the flow sensor 8 are used to monitor the flow and temperature of the cooling water in the temperature regulating system;

[0033] The temperature regulating liquid circulation pump 4 is used to circulate the cooling water in the temperature regulating system and exchange heat with the heat exchanger, and adjust the operating temperature of the ship power battery to the second set operating temperature through the electromagnetic proportional three-way valve;

[0034] The battery temperature control PLC 6 is arranged between the refrigerant water pump and the heat exchanger, and is used for information control of the temperature control system, data information exchange with the ship system, and expansion of remote control of the temperature control system.

[0035] In the embodiment of the utility model, the temperature adjustment system of the ship power battery can be a battery cooling condition, and can also keep the battery pack working at an optimal operating temperature in extremely cold conditions.

[0036] Figure 2 In the inverter chiller unit, the outlet water temperature of the chiller unit is controlled at about 10 degrees through the chiller unit. The heat exchanger exchanges the battery circulating water with the chiller unit water, so that the power battery works in the best working temperature environment. The electromagnetic proportional three-way valve controls the amount of chiller unit water entering the heat exchanger to achieve the purpose of accurately controlling the battery working temperature. The temperature regulating liquid circulation pump circulates the system cooling water; the temperature sensor and flow sensor are used to detect the flow and temperature of the cooling water in the system.

[0037] In another embodiment of the utility model, the temperature regulating liquid circulation pump group adopts a redundant structure in which two temperature regulating liquid circulation pumps are connected in parallel, and a group of stop valves are respectively arranged at the oil outlet and oil return port of each temperature regulating liquid circulation pump.

[0038] In another embodiment of the utility model, the stop valve includes an electric stop valve and a manual stop valve;

[0039] The electric stop valve is arranged between the oil outlet of the temperature regulating liquid circulation pump and the temperature sensor, and the manual stop valve is arranged at the oil return port of the temperature regulating liquid circulation pump.

[0040] Furthermore, the temperature adjustment system includes: a display device;

[0041] The display device is used for information display and human-computer exchange on the temperature adjustment system.

[0042] Further, the compressor unit is a variable frequency refrigerator unit;

[0043] In the cooling mode, the variable frequency refrigerator unit uses a refrigeration circulation pump to allow the cooling water of the refrigerator to exchange heat with the battery cooling water in the heat exchanger, and the three-way valve automatically controls the amount of chilled water flowing through the heat exchanger so that the battery cooling water temperature is constant at the first set working temperature;

[0044] In the heating mode, the refrigerator unit is controlled through the refrigeration circulation pump so that the cooling water of the refrigerator and the battery cooling water exchange heat in the heat exchanger. At the same time, the electromagnetic proportional three-way valve automatically controls the amount of chilled water flowing through the heat exchanger.

[0045] In the embodiment of the utility model, for cooling conditions, the power battery has a large current and generates a lot of heat when it is discharged or charged at a high rate. The variable frequency refrigerator unit works in the cooling mode, and the outlet water temperature of the refrigerator unit is controlled at about 10°C. The cooling water of the refrigerator and the battery cooling water are heat exchanged in the heat exchanger through the refrigeration circulation pump. At the same time, the three-way valve automatically controls the amount of chilled water flowing through the heat exchanger from the refrigerator cooling water, so that the battery cooling water temperature is constant at the optimal working temperature.

[0046] It is understandable that in the embodiment of the present invention, the optimal operating temperature can be set to 15° C. to 25° C. according to the battery material and performance.

[0047] For heating conditions, when the ship is sailing in extremely low temperature areas, the battery is still at a low temperature during normal use. The variable frequency refrigeration unit works in heating mode, and the outlet water temperature of the refrigeration unit is controlled at around 10°C. Through the refrigeration circulation pump, the cooling water of the refrigerator and the battery cooling water are heat exchanged in the heat exchanger. At the same time, the three-way valve automatically controls the amount of chilled water flowing through the heat exchanger of the refrigerator cooling water to increase the battery temperature and ensure the charging and discharging performance and safety of the battery in a low temperature environment.

[0048] The technical solution of this utility model enables pure electric ships, diesel-electric hybrid ships and other ships equipped with large-capacity power battery packs to safely control the temperature of the power battery, keep the battery at the best performance, and extend the battery life. It effectively controls the fire caused by thermal runaway of the power battery.

[0049] When the battery temperature is high, it can effectively dissipate heat to prevent thermal runaway; when the battery temperature is low, it can heat the battery to increase the battery temperature and ensure the charging and discharging performance and safety at low temperatures; it can reduce the temperature difference in the battery pack, inhibit local overheating, and prevent high temperature from causing the battery to decay too quickly and reduce the overall life of the battery pack. The technical solution of this utility model can solve the thermal runaway of the battery when the temperature is too high or too low, and improve the overall performance of the battery.

[0050] The technical solution of this utility model can meet the requirements of sustainable development of the shipping industry, save energy, reduce consumption and save costs. With the advancement of green and sustainable development of the shipping industry, the global requirement for ship sulfur emissions to be reduced to 0.5% in 2020 will take effect. Major shipping countries in the world have proposed active response measures to reduce sulfide, nitrogen oxide and carbon dioxide emissions in ship operations. Pure battery electric propulsion meets this development trend well.

[0051] In the fierce competition environment of the shipping industry, economic benefits always come first. However, in recent years, with the development of green shipping under emission control, relevant regulations have become more and more perfect. The shipping industry must not only meet the requirements of green environmental protection, but also economic benefits. Pure electric propulsion or hybrid propulsion has relatively mature technology in propulsion devices. According to analysis, ships with power battery packs can save energy by about 10%. Even when the ship's generator is used as the main power, the power battery turns on the dynamic compensation mode to eliminate transient load fluctuations so that the generator can operate at constant power in economic conditions, which can also greatly reduce the fuel consumption of the generator.

[0052] The technical solution of this utility model can effectively improve the overall performance of the battery pack and ensure navigation safety. The temperature control of large-capacity power batteries for ships is one of the more difficult problems. The technical solution of this utility model effectively solves the thermal runaway of the battery when the temperature is too high or too low, improves the overall performance of the battery, effectively promotes the application of new energy in ships, and further promotes the shipbuilding industry to adapt to the requirements of the development of the times.

[0053] In another embodiment of the present invention, a ship is provided, wherein the ship comprises a temperature regulating system for a ship power battery as described in any one of the above items.

[0054] The technical solution of this utility model is created from scratch, effectively solving the thermal runaway of the battery when the temperature is too high or too low, and improving the overall performance of the battery. It can achieve the effect of constant temperature, so that the power battery can work in the best environment for a long time and achieve the best charging and discharging performance.

[0055] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A ship power battery temperature control system, characterized in that: The temperature control system includes: a compressor unit, a refrigerant water pump, a heat exchanger, a temperature control liquid circulation pump unit, an electromagnetic proportional three-way valve, a battery temperature control PLC, a temperature sensor and a flow sensor; The compressor unit is used to cooperate with the refrigerant water pump to control the outlet water temperature of the compressor unit to be maintained at a first set temperature; The electromagnetic proportional three-way valve is used to control the amount of circulating water from the compressor unit entering the heat exchanger; The temperature sensor and flow sensor are used to monitor the flow and temperature of cooling water in the temperature regulation system; The temperature regulating liquid circulation pump is used to circulate the cooling water in the temperature regulating system and perform heat exchange with the heat exchanger, and adjust the operating temperature of the ship power battery to the second set operating temperature through the electromagnetic proportional three-way valve; The battery temperature control PLC is arranged between the refrigerant water pump and the heat exchanger, and is used for information control of the temperature control system, data information exchange with the ship system, and expansion of remote control of the temperature control system.

2. A ship power battery temperature control system according to claim 1, characterized in that: The temperature regulating liquid circulation pump group adopts a redundant structure in which two temperature regulating liquid circulation pumps are connected in parallel, and a group of stop valves are respectively arranged at the oil outlet and the oil return port of each temperature regulating liquid circulation pump.

3. A ship power battery temperature control system according to claim 2, characterized in that: The stop valve includes an electric stop valve and a manual stop valve; The electric stop valve is arranged between the oil outlet of the temperature regulating liquid circulation pump and the temperature sensor, and the manual stop valve is arranged at the oil return port of the temperature regulating liquid circulation pump.

4. A ship power battery temperature regulation system according to claim 1, characterized in that: The temperature adjustment system comprises: a display device; The display device is used for information display and human-computer exchange on the temperature adjustment system.

5. A ship power battery temperature adjustment system according to claim 1, characterized in that: The compressor unit is a variable frequency refrigerator unit; In the cooling mode, the variable frequency refrigerator unit uses a refrigeration circulation pump to allow the cooling water of the refrigerator to exchange heat with the battery cooling water in the heat exchanger, and the three-way valve automatically controls the amount of chilled water flowing through the heat exchanger so that the battery cooling water temperature is constant at the first set temperature; In the heating mode, the refrigerator unit is controlled through the refrigeration circulation pump so that the cooling water of the refrigerator and the battery cooling water exchange heat in the heat exchanger. At the same time, the electromagnetic proportional three-way valve automatically controls the amount of chilled water flowing through the heat exchanger.

6. A ship, characterized in that: The ship comprises a ship power battery temperature regulation system as described in any one of claims 1 to 5.

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