Ship battery cooling system and control method thereof

Abstract

The invention discloses a ship battery cooling system and a control method thereof.The ship battery cooling system comprises a cabin and a battery box, the battery box is arranged on a deck of the cabin, the ship battery cooling system further comprises a battery cooling water tank cabin used for battery fire extinguishing, and the battery cooling water tank cabin is arranged in the cabin and located below the battery box; and a water pump for injecting water into the battery cooling water tank cabin is arranged corresponding to the battery cooling water tank cabin. According to the ship battery cooling system and the control method thereof, the design is reasonable, a river water pumping mode is adopted, a large number of water sources needed for cooling after a large-capacity battery catches fire are provided, the input flow of river water is controlled through a water shortage and full water detection mechanism, and the risks that water shortage is caused by evaporation of water vapor during fire extinguishing or overflow of a water tank is caused by excessive water pumping are prevented; and meanwhile, the water pump can also connect cooled water in the water tank cabin to the shore through a pipeline for water source purification, so that pollution to river water is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a ship battery cooling system and a control method thereof. Background Art

[0002] When a battery catches fire in a battery swap station, a fire water tank solution can be used, that is, the burning battery is transferred to the fire water tank for cooling. This solution has a better cooling effect for small-capacity batteries (within 300KWH) and can prevent the safety risks caused by battery fires.

[0003] Due to the special features of new energy ships, such as large size, heavy load and slow running, their battery capacity is often larger than that of new energy vehicles (above 400KWH); therefore, the traditional fire water tank form cannot meet the battery cooling needs on ships, so it is particularly important to develop a battery cooling device suitable for ships.

[0004] For example, patent CN 114768146A discloses a cooling fire water fire extinguishing device and its use method, and a battery fire extinguishing method. The device includes a cooling circulation unit, including a water tank, an evaporator, a condenser, a compressor, an expansion valve, and a heat dissipation fan. The evaporator is placed in the water tank, the condenser, the compressor, and the expansion valve are connected in series between the outlet and the inlet of the evaporator, and the heat dissipation fan dissipates heat for the condenser; the fire water circulation unit includes a fire water inlet pipe, a water pump, and a fire water outlet pipe. The fire water inlet pipe and the fire water outlet pipe are both connected to the water tank, and the water pump is arranged on the fire water outlet pipe; a control unit, the water pump and the compressor are both electrically connected to the control unit, and the control unit has two working modes. In the non-fire handling mode, idle cooling is performed and low-temperature fire water is stored. In the fire handling mode, high-speed cooling is performed and low-temperature fire water is quickly output; ice water storage can be realized, which is suitable for fire extinguishing in new energy vehicle charging and parking areas, energy storage power stations and related scenes. It is difficult to arrange and use on ships. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a ship battery cooling system and a control method thereof, which can provide a large amount of water required for cooling a large-capacity battery after a fire by pumping river water.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A ship battery cooling system comprises a cabin and a battery box, wherein the battery box is arranged on the deck of the cabin, and further comprises a battery cooling water tank cabin for battery fire extinguishing, wherein the battery cooling water tank cabin is arranged in the cabin below the battery box, and a water pump for injecting water into the battery cooling water tank cabin is arranged corresponding to the battery cooling water tank cabin.

[0008] It also includes a controller and a fire protection system for collecting battery alarm data and fire detector alarm signals to determine whether the battery pack is on fire. The fire protection system and water pump are both connected to the controller.

[0009] A support plate which is openable and used for supporting the battery box is provided above the battery cooling water tank cabin.

[0010] The deck is provided with a hanging device for automatically lifting the battery pack in the battery box into the cooling water tank cabin.

[0011] The ship is provided with an alarm signal light for fire warning, and the alarm signal light is connected to a controller.

[0012] A liquid level sensor for detecting the water level in the battery cooling water tank compartment is provided in the battery cooling water tank compartment, and the liquid level sensor is connected to a controller.

[0013] The fire protection system includes a battery management system for monitoring the status of the battery and a fire detector for detecting fire in the battery box. Both the battery management system and the fire detector are connected to a controller.

[0014] The liquid level sensor comprises a low liquid level sensor for detecting whether there is a lack of water in the water tank compartment and a high liquid level sensor for judging whether the water tank compartment is full of water.

[0015] A control method for the ship battery cooling system comprises the following steps:

[0016] Step S1: After the system is started, the battery status detection begins;

[0017] Step S2: When the battery management system issues a fire alarm, such as excessive battery temperature or smoke sensor failure, the system immediately cuts off the battery power connection;

[0018] Step S3: The system determines again whether the fire detector in the battery box detects a fire alarm;

[0019] Step S4: When one of the above two types of alarms is triggered, the fire alarm light is activated to buzz and flash to give a warning;

[0020] Step S5: If both alarm signals are present, the battery is hoisted to the cooling water tank cabin;

[0021] Step S6: After the battery enters the cooling water tank, the system detects whether there is water shortage through the liquid level sensor in the tank;

[0022] Step S7: If there is a lack of water, start the water pump to inject water;

[0023] Step S8: During the water refilling process, the system will also perform a full water detection;

[0024] Step S9: If the liquid level sensor detects that the water level is full, the water pump is stopped and water injection is stopped.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] The ship's battery cooling system and control method are reasonably designed. They use the form of pumping river water to provide a large amount of water required for cooling large-capacity batteries after a fire. The water shortage and full water detection mechanism is used to control the input flow of river water to prevent the risk of water shortage caused by evaporation of water vapor during fire extinguishing or overflow of the water tank due to excessive pumping. At the same time, the water pump can also connect the water after cooling in the water tank to the shore through a pipeline for water purification to prevent pollution of the river water. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following is a brief description of the contents and symbols in the drawings of this specification:

[0028] Figure 1 The figure is a schematic diagram of the arrangement of the system of the present invention on board a ship.

[0029] Figure 2 Schematic diagram of the system of the present invention.

[0030] Figure 3 This is a control flow chart of the system of the present invention.

[0031] In the figure:

[0032] 1. Battery box, 2. Battery cooling water tank compartment, 3. Liquid level sensor, 4. Warning signal light, 5. Water pump,

[0033] 10. Controller, 20. Fire protection system, 21. BMS, 22. Fire detector, 30. Lifting device, 40. Water injection system, 41. Water injection pump, 42. Low level sensor, 43. High level sensor DETAILED DESCRIPTION

[0034] The specific implementation modes of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0035] like Figures 1 to 3 As shown, the ship battery cooling system includes a cabin, a battery box 1, a controller 10, a fire fighting system 20 and a battery cooling water tank cabin 2 for battery fire extinguishing; a battery pack is arranged in the battery box, the battery box is arranged on the deck of the cabin, the battery cooling water tank cabin is arranged in the cabin below the battery box, and a water pump 5 for injecting water into the battery cooling water tank cabin is arranged corresponding to the battery cooling water tank cabin.

[0036] The controller 10 is a digital operation electronic system, which uses a programmable memory to control various types of equipment through input and output; the fire protection system 20 is used to collect battery alarm data and fire detector alarm signals to determine whether the battery pack is on fire; the fire protection system and the water pump are both connected to the controller.

[0037] A support plate for supporting the battery pack and which can be opened is provided above the battery cooling water tank cabin; preferably, one side of the support plate is hinged, and the other side of the support plate is positioned by a fixing pin, so that when the battery pack catches fire, the support plate can be quickly opened to slide the battery pack into the battery cooling water tank cabin; and / or, a hanging device 30 for automatically lifting the battery pack in the battery box into the cooling water tank cabin is provided on the deck, and the hanging device can be an electric hoist; further, an alarm signal light 4 for fire warning is provided on the ship, and the alarm signal light is connected to the controller.

[0038] The fire protection system includes a battery management system (BMS) 21 for monitoring the status of the battery and a fire detector 22 for detecting fire in the battery box. Both the battery management system and the fire detector are connected to the controller.

[0039] Among them, BMS, namely battery management system, is connected via CAN communication and is used to monitor the status of the battery; the fire detector is used for fire detection in the battery box, mainly by combustible gas detectors and point-type composite smoke and temperature fire detectors.

[0040] The water injection system 40 controls the water injection pump 41 and determines the liquid level, so that the water level in the water tank can always meet the battery fire extinguishing cooling requirements during fire fighting; a liquid level sensor for detecting the water level in the water tank is provided in the battery cooling water tank, and the liquid level sensor is connected to the controller. Preferably, the liquid level sensor includes a low level sensor 42 for detecting whether the water tank is short of water and a high level sensor 43 for determining whether the water tank is full of water.

[0041] A river water tank for river water to enter is provided at the bottom of the cabin, and a water pump is arranged in the river water tank. The outlet of the water pump is connected with the bottom of the battery cooling water tank cabin through a pipeline, and a filtering structure for filtering the incoming river water is provided corresponding to the water inlet of the river water tank; further, an opening is provided on the top of the battery cooling water tank cabin. After the ship docks, a water pump pipe on the shore is inserted into the battery cooling water tank cabin to pump out the water in the cabin for purification to prevent pollution of the river water.

[0042] The control method of the ship battery cooling system of the present invention comprises the following steps:

[0043] Step S201: After the system is started, the battery status detection begins;

[0044] Step S202: When a fire alarm is detected by the battery management system (BMS), such as excessive battery temperature or smoke sensor failure, the system immediately cuts off the battery power connection;

[0045] Step S203: the system again determines whether the fire detector in the battery box detects a fire alarm. This solution is a conventional fire detection solution and will not be described in detail.

[0046] Step S204: When one of the above two alarms is sounded, the fire alarm light is activated to buzz and flash to give a warning;

[0047] Step S205: If both alarm signals are present, the battery is hoisted to the cooling water tank cabin;

[0048] Step S206: After the battery enters the cooling water tank cabin, the system detects whether the liquid level sensor (water shortage detection) in the cabin is short of water;

[0049] Step S207: If there is a lack of water, start the water pump to inject water;

[0050] Step S208: During the water refilling process, the system will also perform a full water detection;

[0051] Step S209: If the liquid level sensor (full water detection) detects that the water level is full, the water pump is stopped and water injection is stopped.

[0052] The ship battery cooling system and control method thereof of the present invention are reasonably designed. The system adopts the form of pumping river water to provide a large amount of water source required for cooling large-capacity batteries after fire. The water shortage and full water detection mechanism is utilized to control the input flow rate of river water to prevent the risks of water shortage caused by evaporation of water vapor during fire extinguishing or overflow of the water tank due to excessive pumping. At the same time, the water pump can also connect the water after cooling in the water tank to the shore through a pipeline for water source purification to prevent pollution of the river water.

[0053] The above is only an explanation of the preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0054] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A ship battery cooling system, comprising a cabin and a battery box, wherein the battery box is arranged on the deck of the cabin, characterized in that: It also includes a battery cooling water tank cabin for battery fire extinguishing. The battery cooling water tank cabin is arranged in the cabin below the battery box. A water pump for injecting water into the battery cooling water tank cabin is provided corresponding to the battery cooling water tank cabin.

2. The ship battery cooling system according to claim 1, characterized in that: It also includes a controller and a fire protection system for collecting battery alarm data and fire detector alarm signals to determine whether the battery pack is on fire. The fire protection system and water pump are both connected to the controller.

3. The ship battery cooling system according to claim 2, characterized in that: A support plate which is openable and used for supporting the battery box is provided above the battery cooling water tank cabin.

4. The ship battery cooling system according to claim 2, characterized in that: The deck is provided with a hanging device for automatically lifting the battery pack in the battery box into the cooling water tank cabin.

5. The ship battery cooling system according to claim 2, characterized in that: The ship is provided with an alarm signal light for fire warning, and the alarm signal light is connected to a controller.

6. The ship battery cooling system according to claim 2, characterized in that: A liquid level sensor for detecting the water level in the battery cooling water tank compartment is provided in the battery cooling water tank compartment, and the liquid level sensor is connected to a controller.

7. The ship battery cooling system according to claim 2, characterized in that: The fire protection system includes a battery management system for monitoring the status of the battery and a fire detector for detecting fire in the battery box. The battery management system and the fire detector are both connected to a controller.

8. The ship battery cooling system according to claim 6, characterized in that: The liquid level sensor comprises a low liquid level sensor for detecting whether there is a lack of water in the water tank compartment and a high liquid level sensor for judging whether the water tank compartment is full of water.

9. A control method for a ship battery cooling system according to any one of claims 1 to 8, characterized in that: The control method comprises the following steps: Step S1: After the system is started, the battery status detection begins; Step S2: When the battery management system issues a fire alarm, such as excessive battery temperature or smoke sensor failure, the system immediately cuts off the battery power connection; Step S3: The system again determines whether the fire detector in the battery box detects a fire alarm; Step S4: When one of the above two alarms is triggered, the fire alarm light is activated to buzz and flash to give a warning; Step S5: If both alarm signals are present, the battery is hoisted to the cooling water tank cabin; Step S6: After the battery enters the cooling water tank, the system detects whether there is water shortage through the liquid level sensor in the tank; Step S7: If there is a lack of water, start the water pump to inject water; Step S8: During the water refilling process, the system will also perform a full water detection; Step S9: If the liquid level sensor detects that the water level is full, the water pump is stopped and water injection is stopped.

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