CN113067008A - Metal-air battery system and control method - Google Patents
Metal-air battery system and control method Download PDFInfo
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- CN113067008A CN113067008A CN202110310167.8A CN202110310167A CN113067008A CN 113067008 A CN113067008 A CN 113067008A CN 202110310167 A CN202110310167 A CN 202110310167A CN 113067008 A CN113067008 A CN 113067008A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04276—Arrangements for managing the electrolyte stream, e.g. heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/08—Hybrid cells; Manufacture thereof composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04052—Storage of heat in the fuel cell system
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Abstract
The invention discloses a metal-air battery system, which comprises a control unit and one or more battery units; the battery unit includes a metal-air battery; the control unit is used for acquiring the temperature of the metal-air battery; when the temperature of the metal-air battery is higher than a first set temperature, the control unit is further used for controlling the battery unit to work in a heat dissipation mode, and when the temperature of the metal-air battery is lower than a second set temperature, the control unit is further used for controlling the battery unit to work in a heat storage mode; when the battery unit works in a heat dissipation mode, a liquid inlet of the metal-air battery and a liquid outlet of the metal-air battery are respectively connected with seawater, and the metal-air battery is communicated with the seawater to form a circulation loop; when the battery unit works in a heat storage mode, the liquid inlet of the metal-air battery is communicated with the liquid outlet of the metal-air battery to form a circulation loop. According to the invention, the metal air battery is directly communicated with the seawater, so that the heat of the metal air battery can be taken away by utilizing the low-temperature seawater, and the purpose of cooling is achieved.
Description
Technical Field
The invention relates to the field of metal-air batteries, in particular to a metal-air battery system and a control method.
Background
The metal-air battery has the advantages of high safety, high specific energy, long-term storage and the like, and oceans contain a large amount of free sodium ions and chloride ions which are main components of neutral electrolyte of the metal-air battery, so that the natural components of seawater can be utilized to meet the power generation requirement of the metal-air battery. Accordingly, the use of metal-air batteries in marine environments is of increasing interest.
Marine facilities such as ships, rescue devices, observation devices, and navigation devices are difficult to maintain and need to operate automatically for a long time. The existing metal-air battery system usually needs manual maintenance and is difficult to meet the requirements of offshore facilities. The traditional metal-air battery is difficult to adapt to the temperature of seawater, the working temperature of the metal-air battery is lower than the lower temperature limit of battery reaction due to the excessively low temperature of the seawater, the working temperature of the battery is higher than the upper limit of the battery reaction temperature due to the heat released by the self reaction of the metal-air battery, and the reliability is poor. The temperature of electrolyte is controlled through setting up temperature control device to current metal-air battery, and temperature control device usually needs to consume a large amount of energy, can cause the energy waste. In order to realize offshore suspension, most offshore facilities have smaller volume and lower load bearing. The existing metal-air battery provided with a temperature control device is large in size and heavy in weight, and the requirement of offshore facilities is difficult to meet.
Therefore, designing a metal-air battery system that does not require manual maintenance, has a small volume, is safe and environmentally friendly becomes one of the important concerns and urgent problems to be solved in the field.
Disclosure of Invention
The invention provides a metal-air battery system and a control method in order to solve the problems that the existing metal-air battery system cannot work independently for a long time, is large in size, wastes energy and the like.
The invention provides in a first aspect a metal-air battery system for an offshore facility, the metal-air battery system comprising a control unit and one or more battery units;
the battery unit includes a metal-air battery;
the control unit is used for acquiring the temperature of the metal-air battery;
when the temperature of the metal-air battery is higher than a first set temperature, the control unit is further used for controlling the battery unit to work in a heat dissipation mode, and when the temperature of the metal-air battery is lower than a second set temperature, the control unit is further used for controlling the battery unit to work in a heat storage mode;
when the battery unit works in a heat dissipation mode, seawater is respectively introduced into a liquid inlet of the metal-air battery and a liquid outlet of the metal-air battery, and the metal-air battery is communicated with the seawater to form a circulation loop;
when the battery unit works in a heat storage mode, the liquid inlet of the metal-air battery is communicated with the liquid outlet of the metal-air battery to form a circulation loop.
Further, the battery unit also comprises a first liquid inlet pipeline, a liquid discharge pipeline and a circulating pipeline;
one end of the first liquid inlet pipeline is connected with seawater, the other end of the first liquid inlet pipeline is communicated with a liquid inlet of the metal-air battery, a first liquid pump and a first valve are arranged on the first liquid inlet pipeline, and the first liquid pump is arranged between the first valve and the metal-air battery;
seawater is connected into one end of the liquid discharge pipeline, the other end of the liquid discharge pipeline is communicated with a liquid discharge port of the metal air battery, and a second valve is arranged on the liquid discharge pipeline;
one end of the circulation pipeline is communicated with the first liquid inlet pipeline, the other end of the circulation pipeline is communicated with a liquid outlet of the metal-air battery, a connection point of the circulation pipeline and the first liquid inlet pipeline is positioned between the first liquid pump and the first valve, and the circulation pipeline is provided with a third valve;
when the battery unit works in a heat dissipation mode, the control unit is used for controlling the first liquid pump, the first valve and the second valve to be opened and controlling the third valve to be closed, and the metal-air battery and the seawater form a circulation loop through the first liquid inlet pipeline and the liquid outlet pipeline;
when the battery unit works in a heat storage mode, the control unit is used for controlling the first liquid pump and the second valve to be closed and controlling the first valve and the third valve to be opened, and the metal-air battery forms a circulation loop through the first liquid inlet pipeline and the circulation pipeline.
Furthermore, a one-way valve is arranged on the circulating pipeline and used for limiting the one-way passing of the electrolyte from one end, close to the metal-air battery, of the circulating pipeline to one end, close to the first liquid inlet pipeline, of the circulating pipeline.
Further, when the metal-air battery system is started, the control unit is used for controlling the battery unit to work in a starting mode;
when the battery unit works in a starting mode, the control unit is used for controlling the first liquid pump, the first valve and the second valve to be opened and controlling the third valve to be closed, and the metal-air battery and the seawater form a circulation loop through the first liquid inlet pipeline and the liquid outlet pipeline.
Further, the device also comprises a constant temperature box, wherein the constant temperature box is used for storing electrolyte;
the control unit is further used for acquiring the conductivity of the metal-air battery;
when the conductivity of the metal-air battery is lower than the set conductivity, the control unit is further used for controlling the thermostat to convey electrolyte to the metal-air battery.
Further, the battery unit further comprises a second liquid inlet pipeline;
one end of the second liquid inlet pipeline is communicated with the first liquid inlet pipeline, the other end of the second liquid inlet pipeline is communicated with the thermostat, a connection point of the second liquid inlet pipeline and the first liquid inlet pipeline is positioned between the first valve and the first liquid pump, and a fourth valve is arranged on the second liquid inlet pipeline;
the control unit further controls the thermostat to the metal-air battery electrolyte conveying device comprises a first liquid pump, a second valve and a fourth valve, the first valve and the third valve are closed, the electrolyte in the metal-air battery flows out through a liquid discharge pipeline, the electrolyte in the thermostat passes through a first liquid inlet pipeline and a second liquid inlet pipeline, the metal-air battery is injected through a set time length, the control unit is further used for controlling the second valve to be closed and opened, and when the metal-air battery is full of electrolyte, the control unit is further used for closing the fourth valve.
Furthermore, a flowmeter is arranged on the circulating pipeline, and the control unit detects whether the metal air battery is filled with electrolyte or not through the flowmeter.
Further, the device also comprises a third liquid inlet pipeline;
a solar heating element is arranged on the constant temperature box;
one end of the third liquid inlet pipeline is connected with seawater, the other end of the third liquid inlet pipeline is communicated with the thermostat, a second liquid pump and a fifth valve are arranged on the third liquid inlet pipeline, and the fifth valve is arranged between the thermostat and the second liquid pump;
the control unit is also used for acquiring the liquid level height in the constant temperature box;
when the liquid level in the incubator is lower than a first set height, the control unit is used for controlling the second liquid pump and the fifth valve to be opened, and seawater is injected into the incubator through the third liquid inlet pipeline;
when the liquid level in the incubator is higher than a second set height, the control unit is used for closing the second liquid pump and the fifth valve;
the control unit is also used for acquiring the temperature in the constant temperature box;
when the temperature in the incubator is lower than a third set temperature, the control unit is used for controlling the solar heating element to be started, and the solar heating element heats the incubator;
and when the temperature in the constant temperature box is higher than a fourth set temperature, the control unit is used for controlling the solar heating element to be closed.
The second aspect of the present invention provides a method for controlling a metal-air battery system, including:
acquiring the temperature of the metal-air battery;
when the temperature of the metal-air battery is higher than a first set temperature, controlling the battery unit to work in a heat dissipation mode, and when the temperature of the metal-air battery is lower than a second set temperature, controlling the battery unit to work in a heat storage mode;
when the battery unit works in a heat dissipation mode, seawater is respectively introduced into a liquid inlet of the metal-air battery and a liquid outlet of the metal-air battery, and the metal-air battery is communicated with the seawater to form a circulation loop;
when the battery unit works in a heat storage mode, the liquid inlet of the metal-air battery is communicated with the liquid outlet of the metal-air battery to form a circulation loop.
Further, the method also comprises the steps of obtaining the conductivity of the metal-air battery; and when the conductivity of the metal-air battery is lower than the set conductivity, controlling the thermostat to convey electrolyte to the metal-air battery.
The invention has the beneficial effects that:
(1) the metal-air battery system provided by the invention omits the existing heat dissipation device, directly communicates the metal-air battery with the seawater by controlling the battery unit to work in a heat dissipation mode, can take away the heat of the metal-air battery by using the low-temperature seawater, achieves the purpose of cooling, avoids energy waste, and is more environment-friendly. The existing heating device is omitted, the battery unit is controlled to work in a heat storage mode, the purpose of heating can be achieved by utilizing heat generated by the metal-air battery during working, energy waste is avoided, and the solar air battery is more environment-friendly. The metal-air battery provided by the invention omits an independent electrolyte tank, a heat dissipation device and a heating device, and the volume of the metal-air battery system is obviously reduced. The metal-air battery system provided by the invention can automatically control the metal-air battery to work in the optimal state without manual maintenance.
(2) When the conductivity of the metal-air battery is lower than the set conductivity, the metal-air battery system can timely convey the electrolyte to the metal-air battery system through the thermostat, so that the metal-air battery is ensured to work in the optimal state, and the reliability of the metal-air battery system is improved.
(3) The metal-air battery system provided by the invention can reduce the volume of the metal-air battery system by supplying liquid to a plurality of metal battery units through one thermostat. The first liquid inlet pipeline and the second liquid inlet pipeline share the first liquid pump to convey electrolyte to the metal-air battery, and the size of the metal-air battery system is reduced. When electrolyte is replaced by a part of metal battery units, other metal battery units can meet the continuous and stable working requirement of the metal-air battery system.
(4) The metal air battery system provided by the invention can meet the liquid changing requirement of the metal air battery at any time by controlling the temperature and the liquid level height in the constant temperature box, ensures that the temperature of the electrolyte is suitable for the metal air battery to work, and avoids the problem that the metal air battery cannot continuously generate electricity due to untimely electrolyte replacement or too low electrolyte temperature.
Drawings
Fig. 1 is a schematic structural view of a metal-air battery system according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a metal-air battery system according to another embodiment of the present invention.
Fig. 3 is a schematic view of the structure of an incubator according to an embodiment of the present invention.
Fig. 4 is a flowchart of a method for controlling a metal-air battery system according to an embodiment of the present invention.
In the figure, the position of the upper end of the main shaft,
a control unit, 1;
a battery cell, 2; a first liquid inlet line, 21; a first liquid pump, 211; a first valve, 212; a drainage line, 22; a second valve, 221; a circulation line, 23; a third valve, 231; a one-way valve, 232; a flow meter, 233; a second liquid inlet line, 24; a fourth valve, 241; a first temperature sensor, 25; a metal-air battery, 26;
a thermostat, 3; a solar heating element, 31; an air bag, 32; an air inflation and deflation device, 321; a third liquid inlet line, 33; and a fifth valve. 331; a second liquid pump, 332; a second temperature sensor, 34; a level gauge, 35; a third temperature sensor, 36.
Detailed Description
The metal-air battery system provided by the invention is explained and explained in detail below with reference to the drawings in the specification.
Fig. 1 is a schematic structural view of a metal-air battery system according to an embodiment of the present invention. As shown in fig. 1, the present invention provides a metal-air battery system for an offshore facility, including a control unit 1 and one or more battery units 2. The number of the control units 1 is one, and the control units 1 are used for controlling the working state of the battery units 2. The battery unit 2 includes a metal-air battery 26. The control unit 1 is used to acquire the temperature of the metal-air battery 26. The control unit 1 may optionally acquire the temperature of the metal-air cell 26 via a first temperature sensor 25 provided in the metal-air cell 26. The control unit 1 is also configured to control the battery unit 2 to operate in the heat dissipation mode when the temperature of the metal-air battery 26 is higher than a first set temperature, and the control unit 1 is also configured to control the battery unit 2 to operate in the heat storage mode when the temperature of the metal-air battery 26 is lower than a second set temperature. The first set temperature may be selected as an upper limit temperature of the optimum operating temperature of the metal-air cell 26, and the second set temperature may be selected as a lower limit temperature of the optimum operating temperature of the metal-air cell 26. The first set point temperature may optionally be equal to the second set point temperature. When the battery unit 2 works in a heat dissipation mode, seawater is respectively introduced into a liquid inlet of the metal-air battery 26 and a liquid outlet of the metal-air battery 26, and the metal-air battery 26 is communicated with the seawater to form a circulation loop. When the battery unit 2 works in a heat dissipation mode, the heat of the metal air battery 26 can be taken away by utilizing low-temperature seawater, so that the purpose of cooling is achieved. When the battery unit 2 works in the heat storage mode, the liquid inlet of the metal-air battery 26 is communicated with the liquid outlet of the metal-air battery 26 to form a circulation loop. When the battery unit 2 is operated in the heat storage mode, the temperature can be raised by the heat generated when the metal-air battery 26 is operated. The control unit 1 controls the operation mode of the battery unit 2 to automatically maintain the temperature of the metal-air battery 26 within a set range, so that the metal-air battery 26 operates in an optimal state for a long time.
The ocean contains a large amount of free sodium ions and chloride ions which are main components of the neutral electrolyte of the metal-air battery 26, so that the natural components of seawater are utilized to meet the power generation requirement of the metal-air battery 26. Meanwhile, the internal temperature of the ocean is low throughout the year, and the heat dissipation requirement of the battery system can be met by using low-temperature seawater. Compared with the prior art, the metal-air battery system provided by the invention omits the existing heat dissipation device, directly communicates the metal-air battery 26 with the seawater by controlling the battery unit 2 to work in a heat dissipation mode, can take away the heat of the metal-air battery 26 by using the low-temperature seawater, achieves the purpose of cooling, avoids energy waste, and is more environment-friendly. The existing heating device is omitted, the battery unit 2 is controlled to work in a heat storage mode, the purpose of heating can be achieved by utilizing heat generated by the metal-air battery 26 during working, energy waste is avoided, and the solar air battery is more environment-friendly. The metal-air battery 26 of the present invention eliminates the need for separate electrolyte tanks, heat sinks and heating devices, significantly reducing the size of the metal-air battery system. The metal-air battery system provided by the invention can automatically control the metal-air battery 26 to work in the optimal state without manual maintenance.
In a particular embodiment, battery unit 2 further includes a first fluid inlet line 21, a fluid outlet line 22, and a circulation line 23. One end of the first liquid inlet pipeline 21 is connected with seawater, the other end of the first liquid inlet pipeline 21 is communicated with a liquid inlet of the metal air battery 26, and a first liquid pump 211 and a first valve 212 are arranged on the first liquid inlet pipeline 21. The first valve 212 may be selected as a solenoid valve. The first liquid pump 211 is disposed between the first valve 212 and the metal-air cell 26. The opening and closing of the first liquid pump 211 and the first valve 212 are controlled by the control unit 1. The first liquid pump 211 is used to supply the electrolyte into the metal-air battery 26. Seawater is introduced into one end of the drainage pipeline 22, the other end of the drainage pipeline 22 is communicated with a drainage port of the metal-air battery 26, and a second valve 221 is arranged on the drainage pipeline 22. The second valve 221 may be selected as a solenoid valve. The opening and closing of the second valve 221 is controlled by the control unit 1. One end of the circulation pipeline 23 is communicated with the first liquid inlet pipeline 21, the other end of the circulation pipeline 23 is communicated with a liquid outlet of the metal-air battery 26, a connection point of the circulation pipeline 23 and the first liquid inlet pipeline 21 is positioned between the first liquid pump 211 and the first valve 212, and the circulation pipeline 23 is provided with a third valve 231. The third valve 231 may be selected as a solenoid valve. The opening and closing of the third valve 231 is controlled by the control unit 1. The circulation pipeline 23 is optionally provided with a check valve 232, and the check valve 232 is used for limiting the one-way passing of the electrolyte from one end of the circulation pipeline 23 close to the metal-air battery 26 to one end of the circulation pipeline 23 close to the first liquid inlet pipeline 21. When the battery unit 2 operates in the heat dissipation mode, the control unit 1 is configured to control the first liquid pump 211, the first valve 212, and the second valve 221 to be opened, and control the third valve 231 to be closed, so that the metal-air battery 26 and the seawater form a circulation loop through the first liquid inlet pipe 21 and the liquid outlet pipe 22. The low-temperature seawater takes away the heat of the metal air battery 26, so as to achieve the purpose of cooling. When the battery unit 2 operates in the heat storage mode, the control unit 1 is configured to control the first liquid pump 211 and the second valve 221 to be closed, and control the first valve 212 and the third valve 231 to be opened, so that the metal-air battery 26 forms a circulation loop through the first liquid inlet pipe 21 and the circulation pipe 23. The heat generated by the operation of the metal-air cell 26 serves the purpose of increasing the temperature.
When the metal-air battery system is started, the control unit 1 is used for controlling the battery unit 2 to work in a starting mode. When the battery unit 2 works in the starting mode, the control unit 1 is used for controlling the first liquid pump 211, the first valve 212 and the second valve 221 to be opened and controlling the third valve 231 to be closed, and the metal-air battery 26 and the seawater form a circulation loop through the first liquid inlet pipeline 21 and the liquid outlet pipeline 22. In this embodiment, when the battery unit 2 operates in the starting mode and the heat radiation mode, the circulation path of the electrolyte is an external circulation. The external circulation path of the electrolyte is as follows: sea-first valve 212-first liquid pump 211-metal-air battery 26-second valve 221-sea. The electrolyte is internally circulated when the battery unit 2 is operated in the heat storage mode. The internal circulation path of the electrolyte is as follows: first liquid pump 211-metal-air battery 26-third valve 231-first liquid pump 211.
Fig. 2 is a schematic structural view of a metal-air battery system according to another embodiment of the present invention. As shown in fig. 2, the metal-air battery system further includes an oven 3, the oven 3 being configured to store an electrolyte, and a volume of the oven 3 being greater than or equal to a volume of the metal-air battery 26. The temperature range of the electrolyte stored in oven 3 may be selected within the optimum operating temperature range of metal-air battery 26. The back-up electrolyte in oven 3 can be directly supplied to metal-air battery 26 when metal-air battery 26 needs to be replaced with electrolyte. The control unit 1 is also used to obtain the electrical conductivity of the metal-air cell 26. The control unit 1 is also used to control the incubator 3 to supply the metal-air cell 26 with the electrolyte when the electrical conductivity of the metal-air cell 26 is lower than a set electrical conductivity. The set conductivity may be selected as the lowest conductivity that is sufficient for operation of the metal-air cell 26. When the conductivity of the metal-air battery 26 is lower than the set conductivity, the electrolyte can be timely conveyed to the metal-air battery system through the thermostat 3, so that the metal-air battery 26 is ensured to work in the optimal state, and the reliability of the metal-air battery system is improved.
When the battery unit 2 is a plurality of, a plurality of metal battery units 2 and a thermostated container 3 intercommunication are favorable to reducing the volume of metal-air battery system, and when partial metal battery unit 2 changed electrolyte, other metal battery units 2 can satisfy the continuous stable work demand of metal-air battery system simultaneously.
In a particular embodiment, battery unit 2 further includes a second inlet line 24. One end of the second liquid inlet pipeline 24 is communicated with the first liquid inlet pipeline 21, the other end of the second liquid inlet pipeline 24 is communicated with the thermostat 3, a connection point of the second liquid inlet pipeline 24 and the first liquid inlet pipeline 21 is positioned between the first valve 212 and the first liquid pump 211, and the second liquid inlet pipeline 24 is provided with a fourth valve 241. The fourth valve 241 may be selected as a solenoid valve. The opening and closing of the fourth valve 241 is controlled by the control unit 1. The control unit 1 further controls the thermostat 3 to supply the electrolyte to the metal-air battery 26, including controlling the first liquid pump 211, the second valve 221 and the fourth valve 241 to be opened, and controlling the first valve 212 and the third valve 231 to be closed, the electrolyte in the metal-air battery 26 flows out through the liquid discharge pipeline 22, the electrolyte in the thermostat 3 is injected into the metal-air battery 26 through the first liquid inlet pipeline 21 and the second liquid inlet pipeline 24, and after a set period of time, the control unit 1 is further configured to control the second valve 221 to be closed and the third valve 231 to be opened. The set time period is set according to the charging time of the metal-air battery 26. When the metal-air battery 26 is filled with the electrolyte, the metal-air battery 26 completes the replacement of the electrolyte, and the control unit 1 is further configured to close the fourth valve 241. In this embodiment, the first liquid inlet pipe 21 and the second liquid inlet pipe 24 share the first liquid pump 211 to deliver the electrolyte to the metal-air battery 26, which is beneficial to reducing the volume of the metal-air battery system.
The circulation line 23 may be optionally provided with a flow meter 233, and the control unit 1 detects whether the metal-air battery 26 is filled with the electrolyte through the flow meter 233. After the control unit 1 controls the second valve 221 to close and the third valve 231 to open, it is monitored by the flow meter 233 whether or not the electrolyte flows through the circulation line 23, and when the flow meter 233 detects the electrolyte flow, the metal-air battery 26 is filled with the electrolyte. A flow meter 233 is optionally provided between the third valve 231 and the one-way valve 232. After the control unit 1 closes the fourth valve 241, the circulation path of the electrolyte is: first liquid pump 211-metal air battery 26-third valve 231-flow meter 233-check valve 232-first liquid pump 211.
The metal-air battery system further includes a third liquid inlet pipe 33. The seawater flows into the incubator 3 through the third liquid inlet line 33. The oven 3 is provided with a solar heating element 31. The solar heating member 31 may be selected as a solar heating sheet attached to the outer wall of the oven 3. One end of the third liquid inlet pipeline 33 is connected with seawater, the other end of the third liquid inlet pipeline 33 is communicated with the thermostat 3, and the third liquid inlet pipeline 33 is provided with a second liquid pump 332 and a fifth valve 331. The fifth valve 331 may be selected as a solenoid valve. A fifth valve 331 is provided between the incubator 3 and the second liquid pump 332. The second pump 332 is used to feed seawater into the incubator 3. The control unit 1 is also used to obtain the level of the liquid inside the incubator 3. The control unit 1 optionally acquires the level of the liquid in the incubator 3 by means of a level gauge 35 arranged in the incubator 3. When the liquid level in the incubator 3 is lower than the first set level, the control unit 1 is configured to control the second liquid pump 332 and the fifth valve 331 to be opened, and seawater is injected into the incubator 3 through the third liquid inlet line 33. When the liquid level inside oven 3 is equal to the first set height, the amount of electrolyte stored inside oven 3 may be selected to be greater than the amount of electrolyte stored inside metal-air battery 26. When the level of the liquid in incubator 3 is higher than a second set level, control unit 1 is arranged to close second liquid pump 332 and fifth valve 331. The second set height may optionally be equal to or greater than the first set height.
The control unit 1 is also used to obtain the temperature inside the oven 3. The control unit 1 optionally acquires the temperature inside the oven 3 by means of a second temperature sensor 34 arranged inside the oven 3. When the temperature in the oven 3 is lower than the third set temperature, the control unit 1 is configured to control the solar heating element 31 to be turned on, and the solar heating element 31 heats the oven 3. When the temperature inside the oven 3 is higher than the fourth set temperature, the control unit 1 is configured to control the solar heating member 31 to be turned off. The fourth set temperature may be selected as an upper limit temperature of the optimum operating temperature of the metal-air cell 26, and the third set temperature may be selected as a lower limit temperature of the optimum operating temperature of the metal-air cell 26. The third set point temperature may optionally be equal to the fourth set point temperature. The first set temperature, the second set temperature, the third set temperature and the fourth set temperature are optionally the same.
Fig. 3 is a schematic structural view of oven 3 according to the embodiment of the present invention. As shown in fig. 3, the incubator 3 can be a rectangular box, the solar heating element 31 is adhered to the outer wall of the incubator 3, the air bag 32 is sleeved on the outer surface of the solar heating element 31, the air bag 32 is made of transparent material, and light can pass through the air bag 32 without affecting the work of the solar heating element 31. The outer surface of the air bag 32 is a cambered surface protruding towards one side far away from the thermostat 3, so that light gathering is facilitated, and the working efficiency of the solar heating element 31 is improved. The balloon 32 includes an inflation and deflation device 321. One end of the inflation and deflation device 321 leaks out of the water level, and the other end is communicated with the air bag 32. The control unit 1 is used for controlling the opening and closing of the inflation and deflation. The control unit 1 may optionally obtain the temperature of the seawater via a third temperature sensor 36 arranged at the bottom of the air bag 32. When the temperature of the sea water is within the set temperature range, the control unit 1 controls the air bag 32 to exhaust through the air charging and discharging device 321 so that the incubator 3 is partially or completely immersed below the sea level. When the temperature of the sea water is within the set temperature range, the control unit 1 controls the air bag 32 to inflate through the inflation and deflation device 321, so that the incubator 3 partially or completely floats above the sea level. The set temperature range may be selected as the optimum operating temperature range of the electrolyte. And when the temperature of the seawater is within the optimal working temperature range of the electrolyte, the thermostat 3 is controlled to be immersed below the sea level, and the seawater can be used for preserving the temperature of the electrolyte in the thermostat 3. When the temperature of the seawater is higher than the highest temperature of the optimal working temperature range of the electrolyte or lower than the lowest temperature of the optimal working temperature range of the electrolyte, the seawater can be prevented from influencing the temperature of the electrolyte in the thermostat 3 by controlling the thermostat 3 to float out of the water surface. The invention controls the sinking or floating of the constant temperature box 3 according to the temperature of the seawater, which is beneficial to reducing the working time of the solar heating element 31. The thermostat 3 can be disposed in seawater, does not occupy the storage space of the offshore facility, can also avoid wasting the carrying capacity of the offshore facility, and is particularly suitable for ships, rescue devices, observation devices and navigation devices.
Fig. 4 is a flowchart of a method for controlling a metal-air battery system according to an embodiment of the present invention. As shown in fig. 4, the invention also discloses a method for controlling the metal-air battery system, which comprises the following steps:
s41: acquiring the temperature of the metal-air battery;
s42: and when the temperature of the metal-air battery is lower than a second set temperature, controlling the battery unit to work in a heat storage mode.
In a specific embodiment, the method further comprises acquiring the conductivity of the metal-air battery. And when the conductivity of the metal-air battery is lower than the set conductivity, controlling the thermostat to convey the electrolyte to the metal-air battery.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "the present embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and simplifications made in the spirit of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. A metal-air battery system for offshore installations, characterized by comprising a control unit (1) and one or more battery units (2);
the battery unit (2) comprises a metal-air battery (26);
the control unit (1) is used for acquiring the temperature of the metal-air battery (26);
the control unit (1) is also used for controlling the battery unit (2) to work in a heat dissipation mode when the temperature of the metal-air battery (26) is higher than a first set temperature, and the control unit (1) is also used for controlling the battery unit (2) to work in a heat storage mode when the temperature of the metal-air battery (26) is lower than a second set temperature;
when the battery unit (2) works in a heat dissipation mode, a liquid inlet of the metal-air battery (26) and a liquid outlet of the metal-air battery (26) are respectively connected with seawater, and the metal-air battery (26) is communicated with the seawater to form a circulation loop;
when the battery unit (2) works in a heat storage mode, a liquid inlet of the metal-air battery (26) is communicated with a liquid outlet of the metal-air battery (26) to form a circulation loop.
2. A metal-air battery system according to claim 1, characterized in that the battery unit (2) further comprises a first liquid inlet line (21), a liquid outlet line (22) and a circulation line (23);
one end of the first liquid inlet pipeline (21) is connected with seawater, the other end of the first liquid inlet pipeline (21) is communicated with a liquid inlet of the metal-air battery (26), a first liquid pump (211) and a first valve (212) are arranged on the first liquid inlet pipeline (21), and the first liquid pump (211) is arranged between the first valve (212) and the metal-air battery (26);
one end of the liquid discharge pipeline (22) is connected with seawater, the other end of the liquid discharge pipeline (22) is communicated with a liquid discharge port of the metal air battery (26), and a second valve (221) is arranged on the liquid discharge pipeline (22);
one end of the circulating pipeline (23) is communicated with the first liquid inlet pipeline (21), the other end of the circulating pipeline (23) is communicated with a liquid outlet of the metal-air battery (26), a connection point of the circulating pipeline (23) and the first liquid inlet pipeline (21) is positioned between the first liquid pump (211) and the first valve (212), and the circulating pipeline (23) is provided with a third valve (231);
when the battery unit (2) works in a heat dissipation mode, the control unit (1) is used for controlling the first liquid pump (211), the first valve (212) and the second valve (221) to be opened and controlling the third valve (231) to be closed, and the metal-air battery (26) and the seawater form a circulation loop through the first liquid inlet pipeline (21) and the liquid discharge pipeline (22);
when the battery unit (2) works in a heat storage mode, the control unit (1) is used for controlling the first liquid pump (211) and the second valve (221) to be closed and controlling the first valve (212) and the third valve (231) to be opened, and the metal-air battery (26) forms a circulation loop through the first liquid inlet pipeline (21) and the circulation pipeline (23).
3. A metal-air battery system according to claim 2, characterized in that the circulation pipeline (23) is provided with a one-way valve (232), and the one-way valve (232) is used for limiting the one-way passing of the electrolyte from the end of the circulation pipeline (23) close to the metal-air battery (26) to the end of the circulation pipeline (23) close to the first liquid inlet pipeline (21).
4. A metal-air battery system according to claim 2, characterized in that, when the metal-air battery system is started, the control unit (1) is configured to control the battery unit (2) to operate in a start mode;
when the battery unit (2) works in a starting mode, the control unit (1) is used for controlling the first liquid pump (211), the first valve (212) and the second valve (221) to be opened and controlling the third valve (231) to be closed, and the metal-air battery (26) and the seawater form a circulation loop through the first liquid inlet pipeline (21) and the liquid discharge pipeline (22).
5. A metal-air battery system according to any of claims 2-4, characterized by further comprising an incubator (3), the incubator (3) being used for storing electrolyte;
the control unit (1) is also used for acquiring the conductivity of the metal-air battery (26);
when the conductivity of the metal-air battery (26) is lower than a set conductivity, the control unit (1) is also used for controlling the incubator (3) to convey electrolyte to the metal-air battery (26).
6. A metal-air battery system according to claim 5, characterized in that the battery unit (2) further comprises a second liquid inlet duct (24);
one end of the second liquid inlet pipeline (24) is communicated with the first liquid inlet pipeline (21), the other end of the second liquid inlet pipeline (24) is communicated with the thermostat (3), a connection point of the second liquid inlet pipeline (24) and the first liquid inlet pipeline (21) is positioned between the first valve (212) and the first liquid pump (211), and a fourth valve (241) is arranged on the second liquid inlet pipeline (24);
the control unit (1) also controls the thermostat (3) to deliver electrolyte to the metal-air battery (26) and controls the first liquid pump (211), the second valve (221) and the fourth valve (241) to be opened, and controlling the first valve (212) and the third valve (231) to be closed, wherein the electrolyte in the metal-air battery (26) flows out through a liquid discharge pipeline (22), the electrolyte in the constant temperature box (3) is injected into the metal air battery (26) through the first liquid inlet pipeline (21) and the second liquid inlet pipeline (24), after a set time period, the control unit (1) is also used for controlling the second valve (221) to close and opening the third valve (231), the control unit (1) is further adapted to close the fourth valve (241) when the metal-air battery (26) is filled with electrolyte.
7. A metal-air battery system according to claim 6, characterized in that a flow meter (233) is provided on the circulation line (23), and the control unit (1) detects whether the metal-air battery (26) is filled with electrolyte through the flow meter (233).
8. A metal-air battery system according to claim 5, characterized by further comprising a third liquid inlet conduit (33);
a solar heating element (31) is arranged on the constant temperature box (3);
one end of the third liquid inlet pipeline (33) is connected with seawater, the other end of the third liquid inlet pipeline (33) is communicated with the incubator (3), a second liquid pump (332) and a fifth valve (331) are arranged on the third liquid inlet pipeline (33), and the fifth valve (331) is arranged between the incubator (3) and the second liquid pump (332);
the control unit (1) is also used for acquiring the liquid level height in the constant temperature box (3);
when the liquid level in the incubator (3) is lower than a first set height, the control unit (1) is used for controlling the second liquid pump (332) and the fifth valve (331) to be opened, and seawater is injected into the incubator (3) through the third liquid inlet pipeline (33);
-the control unit (1) is adapted to closing the second liquid pump (332) and the fifth valve (331) when the level of the liquid inside the incubator (3) is higher than a second set level;
the control unit (1) is also used for acquiring the temperature in the constant temperature box (3);
when the temperature in the incubator (3) is lower than a third set temperature, the control unit (1) is used for controlling the solar heating element (31) to be opened, and the solar heating element (31) heats the incubator (3);
when the temperature in the constant temperature box (3) is higher than a fourth set temperature, the control unit (1) is used for controlling the solar heating element (31) to be closed.
9. A metal-air battery system control method, comprising:
acquiring the temperature of the metal-air battery (26);
controlling the battery unit (2) to operate in a heat dissipation mode when the temperature of the metal-air battery (26) is higher than a first set temperature, and controlling the battery unit (2) to operate in a heat storage mode when the temperature of the metal-air battery (26) is lower than a second set temperature;
when the battery unit (2) works in a heat dissipation mode, a liquid inlet of the metal-air battery (26) and a liquid outlet of the metal-air battery (26) are respectively connected with seawater, and the metal-air battery (26) is communicated with the seawater to form a circulation loop;
when the battery unit (2) works in a heat storage mode, a liquid inlet of the metal-air battery (26) is communicated with a liquid outlet of the metal-air battery (26) to form a circulation loop.
10. The metal-air battery system control method according to claim 9, further comprising acquiring an electrical conductivity of the metal-air battery (26); when the conductivity of the metal-air battery (26) is lower than the set conductivity, controlling the thermostat (3) to convey electrolyte to the metal-air battery (26).
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Cited By (1)
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| CN114725584A (en) * | 2022-04-26 | 2022-07-08 | 郑州佛光发电设备股份有限公司 | Electrolyte tank and metal-air battery |
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