Desalting, dehumidifying and cooling integrated thermal management device and method for marine environment energy storage battery

Abstract

The invention belongs to the technical field of energy storage batteries, and particularly relates to a desalting, dehumidifying and cooling integrated thermal management device and method for a marine environment energy storage battery. The device is composed of an energy storage battery module, an air inlet dehumidification and desalination module, an air return reprocessing module, a salt crystallization and separation module, a cold source heat exchanger and a heat source heat exchanger. Wherein the inlet air dehumidification and desalination module cools inlet air by utilizing a first solvent and inlet air cross flow heat exchange mode, meanwhile, the first solvent dissolves salt mist ions in inlet sea wind, and the purposes of reducing the dew point temperature and dehumidifying the inlet sea wind are further achieved; in order to ensure water-salt concentration balance of the first solution, a salt crystallization precipitation module and a return air retreatment module are adopted to jointly adjust the concentration of the first solution. A solution is provided for safe and reliable operation of the energy storage battery system under the ocean high-temperature, high-humidity and high-salt links.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of energy storage batteries, and particularly relates to a desalination, dehumidification and cooling integrated thermal management device and method for an energy storage battery in a marine environment. BACKGROUND

[0002] Lithium ion battery energy storage systems are widely used in the field of offshore wind / photovoltaic power to solve the intermittency and instability of wind / photovoltaic power generation. However, the marine, island and coastal estuary regions have high humidity and high salinity characteristics, which will bring challenges to the safe and stable operation of the energy storage battery. For example, when the humidity increases, the battery is prone to condensation, which can cause water film on the parts, corrode the joints, cause electrical short circuit, and increase the equipment failure rate; the increase in salinity accelerates the electrochemical corrosion of metal materials. Especially in the high-humidity marine environment, salt spray can form a salt solution film on the surface of the energy storage battery or other accessories, which can affect the mechanical properties, and rust and short circuit can aggravate electrical failure.

[0003] Therefore, there is an urgent need to provide a desalination, dehumidification and cooling integrated thermal management device for an energy storage battery in a marine environment, which has the functions of cooling, dehumidification and desalination.

[0004] The above information disclosed in the background of the application is only used to increase the understanding of the background of the application, and therefore, it can include prior art known to those skilled in the art. SUMMARY

[0005] In order to overcome the above-mentioned problems in the prior art, the present application provides a desalination, dehumidification and cooling integrated thermal management device and method for an energy storage battery in a marine environment, which comprises an energy storage battery module, an air inlet dehumidification and desalination module, an air inlet dehumidification and desalination module, an air return reprocessing module, a salt crystallization module, a cold source heat exchanger and a heat source heat exchanger. The air inlet dehumidification and desalination module uses a first solvent and an air inlet cross-flow heat exchange mode to cool the air inlet, and the first solvent dissolves the salt mist ions in the air inlet to reduce the dew point temperature and achieve the purpose of dehumidification of the air inlet. In order to ensure the water-salt concentration balance of the first solution, the salt crystallization module and the air return reprocessing module are used to jointly adjust the concentration of the first solution. The present application provides a solution for the safe and reliable operation of the energy storage battery system under the high temperature, high humidity and high salinity conditions in the marine environment.

[0006] In some embodiments of the present application, a desalination, dehumidification and cooling integrated thermal management device for an energy storage battery in a marine environment is provided, which comprises: an energy storage battery module, which comprises an energy storage battery pack, a dehumidification interlayer between the batteries and an energy storage battery air inlet and outlet duct; The air inlet dehumidification and desalination module comprises a first shell-and-tube spray heat exchanger for directly exchanging heat between the air inlet and a spray solution, a cavity of the first shell-and-tube spray heat exchanger is divided into three sections in the longitudinal direction, from top to bottom, the three sections are a first solution spray cavity, a first solution-air heat exchange section cavity and a first solution collecting cavity, a plurality of first solution spray nozzles are arranged in the first solution spray cavity, three outlets are arranged at the bottom of the first solution collecting cavity, and the three outlets are a first outlet, a second outlet and a third outlet; salt in the air inlet is dissolved through the spraying process of the first solution, the condensation temperature of the moisture in the air inlet is reduced, and the purposes of desalination, cooling and dehumidification of the air inlet are achieved; The cold source heat exchanger is connected to the first solution spray nozzles at the upper end of the first shell-and-tube spray heat exchanger through a pipeline at the first end, and is connected to the first outlet of the first solution collecting cavity through a pipeline at the second end; the cold source heat exchanger is used for heat exchange with the first solution to cool the first solution; The salt crystallization and precipitation module comprises a salt crystallization and precipitation device, a pipeline is arranged between the cold source heat exchanger and the first outlet, and a three-way valve is arranged at the connection position; the second end is connected to the second outlet of the first solution collecting cavity through a pipeline; the first solution flowing out of the first outlet is guided to the salt crystallization and precipitation device through switching of the three-way valve, and the desalted solution flows into the first solution collecting cavity through the second outlet; The return air reprocessing module comprises a second shell-and-tube spray heat exchanger, a cavity of the second shell-and-tube spray heat exchanger is divided into three parts from top to bottom, the upper part is a second solution spray cavity, the middle part is a second solution-air heat exchange section cavity, and the lower part is a second solution collecting cavity, wherein a plurality of second solution spray nozzles are arranged in the second solution spray cavity, a fourth outlet and a fifth outlet are arranged at the bottom of the second solution collecting cavity in the lower part, the fourth outlet is connected to the third outlet through a pipeline, and the fourth outlet is used for concentration adjustment of the first solution; The heat source heat exchanger is connected to the second solution spray nozzles at the upper end of the second shell-and-tube spray heat exchanger through a pipeline at the first end, and is connected to the fifth outlet of the second solution collecting cavity through a pipeline at the second end; the heat source heat exchanger is used for heat exchange with the second solution to heat the second solution.

[0007] In some embodiments of the present application, a stirring component is further arranged in the salt crystallization and precipitation device to stir and accelerate the precipitation of salt, when the salt is crystallized and precipitated on the stirring component, the stirring component is taken out to remove salt by opening the upper cover of the salt crystallization and precipitation device, and the desalted solution can flow into the first solution collecting cavity through the second outlet.

[0008] In some embodiments of the present application, a first valve and a first pump body are arranged on the pipeline through which the first outlet communicates with the three-way valve; a second valve and a second pump body are arranged on the pipeline through which the fourth outlet communicates with the third outlet; a third valve and a third pump body are arranged on the pipeline through which the fifth outlet communicates with the heat source heat exchanger, the first valve, the second valve and the third valve are used to control the opening and closing of the pipeline, and the first pump body, the second pump body and the third pump body are used to control the flow of the solution in the pipeline.

[0009] In some embodiments of the present application, the cold source heat exchanger exchanges heat with an evaporator of an air conditioning system, the heat source heat exchanger exchanges heat with a condenser of the air conditioning system, and the air conditioning system comprises a refrigerant circulation loop in which the refrigerant circulates and flows in sequence through a compressor, a condenser, an electronic expansion valve and an evaporator.

[0010] In some embodiments of the present application, the evaporator comprises a first evaporator and a second evaporator arranged in parallel in the refrigerant circulation loop; the first evaporator exchanges heat with the cold source heat exchanger; along the airflow direction, the second evaporator is arranged upstream of the inlet air dehumidification and desalination module, and the inlet air first flows through the second evaporator for first-stage cooling and dehumidification treatment, and then flows through the inlet air dehumidification and desalination module.

[0011] In some embodiments of the present application, the cold source heat exchanger uses ocean wind cooling to cool the first solution, and the heat source heat exchanger uses a photovoltaic heat collector on the sea to heat the second solution.

[0012] In some embodiments of the present application, the first solution and the second solution are one or more of LiCl, BrCl, KCl and NaCl solutions, the concentration of the salt in the first solution is less than the concentration of the salt in the sea wind, and the concentration of the salt in the second solution is greater than the concentration of the salt in the sea wind.

[0013] In some other embodiments of the present application, a kind of ocean environment energy storage battery desalination and dehumidification cooling integrated thermal management method is provided, and a kind of ocean environment energy storage battery desalination and dehumidification cooling integrated thermal management device is used, the first solution passes through the first pump body and the three-way valve, enters the cold source heat exchanger, exchanges heat, the cooled first solution is cooled, then is sprayed out through the first solution spray port, realizes the dehumidification, cooling and desalination of the sea wind, and the airflow after treatment exchanges heat with the energy storage battery group through the energy storage battery inlet and outlet air duct; the first solution dissolves the salt in the sea wind in the spray to realize desalination, and the sea wind is cooled, the water vapor partial pressure of the cooled sea wind is reduced, the water vapor is condensed, the air humidity is reduced, and the purpose of dehumidification and cooling is achieved.

[0014] In some embodiments of the present application, when the conductivity of the first solution in the first solution collecting cavity is greater than or equal to 100 μS / cm, the first solution is replaced by the second solution. When the pressure is greater than a first preset value, the three-way valve is switched to force the solution into the salt crystallization device, and the stirring of the stirring component accelerates the precipitation of salt. Crystallized salt is precipitated on the stirring component, and the upper cover of the salt crystallization device is opened to perform desalination. The desalted first solution flows into the first solution collecting chamber through the second outlet. When the conductivity of the first solution in the first solution collecting chamber is When it is less than the second preset value, the return air reprocessing module is used to achieve the concentration balance of the first solution. The second solution passes through the fifth outlet and enters the heat source heat exchanger under the action of the third pump body. After the second solution is heated, it flows into the cavity of the second shell and tube spray heat exchanger for spraying. At this time, the wind flowing through the energy storage battery module absorbs the heat of the energy storage battery group. Due to the increase in temperature, the water vapor it can carry increases. In the process of spraying heat exchange with the second solution, it absorbs moisture in the second solution and becomes air carrying water vapor and is discharged to the environment. The concentration of the second solution that falls back to the second solution collecting chamber increases, and is mixed with the first solution through the fourth outlet and the second pump body to adjust the concentration of the first solution. When the concentration of the first solution does not need to be adjusted and the concentration of the second solution is higher than the threshold, salt particles can also be naturally crystallized.

[0015] In some embodiments of the present application, the conductivity of the first solution in the first solution collecting chamber is , and 0.002μS / cm ≤0.08μS / cm; conductivity of the second solution in the second solution collecting chamber , and 0.1μS / cm ≤0.5μS / cm; when When the first preset value is greater than 0.08μS / cm, the three-way valve switches to allow the first solution to flow through the salt crystallization module to allow salt crystals to precipitate, ensuring within a reasonable range; when When the concentration of the first solution is lower than 0.002μS / cm, i.e. the second preset value, the third valve is opened and the second solution is used to adjust the concentration of the first solution to ensure within a reasonable range; when If the concentration is higher than 0.5 μS / cm, the third valve is also opened to adjust the concentration of the second solution to ensure that it is within a reasonable range.

[0016] In some embodiments of the present application, the temperature of the energy storage battery is guaranteed, the humidity in the energy storage battery module is guaranteed, and the salinity in the energy storage battery module is guaranteed according to different priorities. Both the air supply amount and the air supply temperature affect the battery temperature, and the air supply amount is changed first. When the temperature control cannot be controlled by increasing the air supply amount, the inlet air dehumidification and desalination module is opened, the control cooling capacity is adjusted, and the inlet air temperature is obtained. When the temperature reaches the set target, the humidity in the energy storage battery module is determined. If the humidity does not meet the requirement, the air supply temperature adjustment is continued. After the humidity in the energy storage battery module is controlled, the desalination link is entered, the conductivity of the first solution is controlled to be lower than the conductivity of the salt mist in the marine air, and the desalination of the inlet air can be realized by spraying.

[0017] Compared with the prior art, the present application has at least the following technical effects: (1) Realize the battery air cooling and dehumidification function: use the method of spraying the first solution to cool the sea breeze, reduce the sea breeze temperature, reduce the sea breeze air water vapor saturation pressure, realize the sea breeze air water vapor condensation and collection.

[0018] (2) Realize the desalination function of the energy storage battery module, avoid metal corrosion and shorten the service life of non-metal, and combine dehumidification to avoid short circuit and safety problems caused by salt-containing moisture conduction.

[0019] (3) Make full use of the common ion effect of the first solution. At the same temperature, the ion concentration in the solution is lower than the ion concentration of the salt mist in the air. Dissolve the salt mist ions in the sea breeze air to achieve the purpose of desalination of the sea breeze air.

[0020] (4) First solution water salt concentration balance: in the inlet air dehumidification and desalination module, the concentration of the first solution in the first solution collection cavity will fluctuate. One is that the water vapor in the sea breeze air condenses and falls back to the first solution collection cavity under the action of gravity. When the concentration is lower than the set lower limit value (concentration and conductivity are one-to-one), the second solution is used to adjust the concentration of the first solution. Two is that the salt mist ions in the sea breeze air are dissolved and fall back to the first solution collection cavity under the action of gravity, which causes the concentration of the first solution to rise. When the concentration is higher than the set upper limit value, the salt crystallization module is used to precipitate and reduce the concentration.

[0021] (5) The first solution water salt concentration balance can utilize the battery exhaust heat: in the second solution, the second solution is heated by a heat source. In order to save energy and utilize the battery exhaust heat to further increase the temperature, the water vapor partial pressure of the exhaust air is increased, and the water in the second solution is dissolved in the exchange process. The concentration of the second solution increases. This process utilizes the battery return air to save energy. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in conjunction with the drawings and examples.

[0023] Figure 1 Schematic diagram of a thermal management system in some embodiments of the present application Figure One ; Figure 2 Schematic diagram of a thermal management system in some embodiments of the present application Figure Two ; Figure 3 Schematic diagram of a thermal management system in some embodiments of the present application Figure Three ; Figure 4 Schematic diagram of a thermal management system in some embodiments of the present application Figure Four .

[0024] Wherein, 100-energy storage battery module, 101-energy storage battery pack, 102-inter-battery dehumidification interlayer, 103-inlet air dehumidification and desalination module, 104-first solution spraying cavity, 105-first solution-inlet air heat exchange section cavity, 106-first solution collecting cavity, 107-first outlet, 108-second outlet, 109-third outlet, 110-first pump body, 111-three-way valve, 112-cold source heat exchanger, 113-cold source, 114-cold source and first solution heat exchange cycle, 115-sea breeze, 116-processed sea breeze, 117-first solution spraying port, 118-salt crystallization and precipitation module, 119-stirring component, 120-fourth pump body, 121-return air reprocessing module, 122-second solution spraying cavity, 123-second solution-return air heat exchange section cavity, 124-second solution collecting cavity, 125-second solution spraying port, 126-fourth outlet, 127-fifth outlet, 128-third pump body, 129-heat source heat exchanger, 130-heat source, 131-heat source and second solution heat exchange cycle, 132-battery module exhaust air, 133-air carrying water vapor, 134-second pump body, 201-compressor, 202-condenser, 203-electronic expansion valve, 204-evaporator, 205-second evaporator. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described in detail below in conjunction with the drawings and specific embodiments, but those skilled in the art will understand that the following described embodiments are part of the embodiments of the present application, not all the embodiments, and are only used to illustrate the present application, and should not be regarded as limiting the scope of the present application.

[0026] It should be pointed out that the following detailed description is exemplary and is intended to provide further description of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0027] In the description of the present application, it needs to be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or relative position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified, the above orientation description can be flexibly arranged in the actual application process under the condition of meeting the relative position relationship shown in the drawings.

[0028] The terms "first", "second", are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated, so that the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0029] In the embodiments of the present application, the terms "comprise", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitation, the element limited by the sentence "comprising a" does not exclude the presence of another identical element in the process, article or device including the element.

[0030] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to mean an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes, and in fact, the words such as "exemplary" or "for example" are intended to present the relevant concept in a specific manner.

[0031] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative labor fall within the scope of protection of the present application. If no specific conditions are specified in the embodiments, the conventional conditions or the conditions recommended by the manufacturer are used. If the reagents or instruments used are not specified by the manufacturer, they are all conventional products that can be purchased on the market.

[0032] The following will be described by embodiments, and combined with the drawings Figures 1-4 The present application is further described in detail.

[0033] In some embodiments of the present application, a marine environment energy storage battery desalination and dehumidification cooling integrated thermal management device is provided, the thermal management device comprising: The energy storage battery module 100 comprises an energy storage battery pack 101, a battery interlayer dehumidification 102, and an energy storage battery inlet and outlet air duct; The inlet air dehumidification and desalination module 103 comprises a first shell and tube spray heat exchanger for direct heat exchange between inlet air and spray solution. The cavity of the first shell and tube spray heat exchanger is divided into three sections in the longitudinal direction, from top to bottom, a first solution spray cavity 104, a first solution-inlet air heat exchange section cavity 105, and a first solution collecting cavity 106. A plurality of first solution spray nozzles 117 are arranged in the first solution spray cavity 104. Three outlets, a first outlet 107, a second outlet 108, and a third outlet 109, are arranged at the bottom of the first solution collecting cavity 106. Through the spray process of the first solution, the salt in the inlet air is dissolved, and the condensation temperature of the moisture in the inlet air is reduced, achieving the purpose of desalination, cooling, and dehumidification of the inlet air. A cold source heat exchanger 112, the first end of which is in communication with the first solution spray nozzles 117 at the upper end of the first shell and tube spray heat exchanger through a pipeline, and the second end of which is in communication with the first outlet 107 of the first solution collecting cavity 106 through a pipeline. The cold source heat exchanger 112 is used for heat exchange with the first solution to cool the first solution. A salt crystallization and precipitation module 118, comprising a salt crystallization and precipitation device, the first end of which is in communication with the pipeline between the cold source heat exchanger 112 and the first outlet 107, and a three-way valve 111 is arranged at the communication position. The second end is in communication with the second outlet 108 of the first solution collecting cavity 106. Through the switching of the three-way valve 111, the first solution flowing out of the first outlet 107 is guided to the salt crystallization and precipitation device, and the desalted solution flows into the first solution collecting cavity 106 through the second outlet 108. A return air reprocessing module 121, comprising a second shell and tube spray heat exchanger, the cavity of which is divided into three parts from top to bottom, the upper section being a second solution spray cavity 122, the middle section being a second solution-return air heat exchange section cavity 123, and the lower section being a second solution collecting cavity 124. A plurality of second solution spray nozzles 125 are arranged in the second solution spray cavity 122. The bottom of the lower section of the second solution collecting cavity 124 is provided with a fourth outlet 126 and a fifth outlet 127. The fourth outlet 126 is in communication with the third outlet 109 through a pipeline, and is used for concentration adjustment of the first solution. A heat source heat exchanger 129, the first end of which is in communication with the second solution spray nozzles 125 at the upper end of the second shell and tube spray heat exchanger through a pipeline, and the second end of which is in communication with the fifth outlet 127 of the second solution collecting cavity 124 through a pipeline. The heat source heat exchanger 129 is used for heat exchange with the second solution to heat the second solution.

[0034] In some embodiments of the present application, the salt crystallization device is further provided with a stirring component 119 for stirring and accelerating the crystallization of the salt. When the salt is crystallized on the stirring component 119, the stirring component is removed by opening the cover of the salt crystallization device to remove the salt. The solution after desalination can flow into the first solution collection chamber 106 through the second outlet 108.

[0035] In some embodiments of the present application, a first valve and a first pump body 110 are arranged on the pipeline through which the first outlet 107 communicates with the three-way valve 111; a second valve and a second pump body 134 are arranged on the pipeline through which the fourth outlet 126 communicates with the third outlet 109; a third valve and a third pump body 128 are arranged on the pipeline through which the fifth outlet 127 communicates with the heat source heat exchanger 129. The first valve, the second valve and the third valve are used to control the opening and closing of the pipeline, and the first pump body 110, the second pump body 134 and the third pump body 128 are used to control the flow of the solution in the pipeline.

[0036] In some embodiments of the present application, the cold source heat exchanger 112 exchanges heat with the cold source 113 to form a cold source and first solution heat exchange cycle 114; the heat source heat exchanger 129 exchanges heat with the heat source 130 to form a heat source and second solution heat exchange cycle 131.

[0037] In some embodiments of the present application, the cold source heat exchanger 112 exchanges heat with the evaporator 204 of an air conditioning system, and the heat source heat exchanger 129 exchanges heat with the condenser 202 of the air conditioning system. The air conditioning system includes a refrigerant circulation loop, and the refrigerant circulates in the refrigerant circulation loop composed of a compressor 201, a condenser 202, an electronic expansion valve 203 and an evaporator 204 in sequence.

[0038] In some embodiments of the present application, the evaporator 204 includes a first evaporator and a second evaporator 205 arranged in parallel in the refrigerant circulation loop; the first evaporator exchanges heat with the cold source heat exchanger 112; along the airflow direction, the second evaporator 205 is placed upstream of the inlet air dehumidification and desalination module 103, and the inlet air first flows through the second evaporator 205 for first-stage cooling and dehumidification treatment, and then flows through the inlet air dehumidification and desalination module 103, so that two-stage cooling and dehumidification are suitable for heat dissipation of energy storage batteries in high-humidity and high-temperature deep-sea areas.

[0039] In some embodiments of the present application, the cold source heat exchanger 112 uses ocean wind cooling to cool the first solution, and the heat source heat exchanger 129 uses a photovoltaic heat collector on the sea to heat the second solution.

[0040] In some embodiments of the present application, the first solution and the second solution are one or more of LiCl, BrCl, KCl, and NaCl solutions, and the salt concentration in the first solution is lower than the salt concentration in the sea breeze 115; the salt concentration in the second solution is higher than the salt concentration in the sea breeze 115.

[0041] In some embodiments of the present application, the concentration of NaCl in the first solution is lower than the concentration of NaCl in the sea breeze 115 ; the concentration of NaCl in the second solution is higher than the concentration of NaCl in the sea breeze 115 .

[0042] In some embodiments of the present application, the first solution passes through the first pump body 110 and the three-way valve 111 and enters the cold source heat exchanger 112 for heat exchange. The cooled first solution is cooled and then sprayed out through the first solution nozzle 117 to achieve dehumidification, cooling and desalination of the sea breeze 115. The treated sea breeze 116 exchanges heat with the energy storage battery group 101 through the energy storage battery inlet and outlet air ducts; the first solution dissolves the salt in the sea breeze 115 during the spraying to achieve desalination and cool the sea breeze 115 at the same time. After cooling, the water vapor partial pressure of the sea breeze 115 is reduced, the water vapor condenses, and the air moisture content is reduced, thereby achieving the purpose of dehumidification and cooling.

[0043] In some embodiments of the present application, during the spraying process of the first solution, the concentration of the first solution changes, and the concentration balance of the first solution is maintained by the second solution through the salt crystallization module 118 and the fourth outlet 126 .

[0044] In some embodiments of the present application, when the conductivity of the first solution in the first solution collecting chamber 106 is When the value is greater than the first preset value, the three-way valve 111 is switched to force the solution into the salt crystallization device, and the stirring of the stirring component 119 accelerates the precipitation of salt. The crystallized salt is precipitated on the stirring component 119, and the upper cover of the salt crystallization device is opened for desalination. The desalted first solution flows into the first solution collecting chamber 106 through the second outlet 108.

[0045] In some embodiments of the present application, a fourth valve and a fourth pump body 120 are further provided on the pipeline connecting the second end of the salt crystallization device and the second outlet 108 to control the on-off of the pipeline and the flow rate of the solution.

[0046] In some embodiments of the present application, when the conductivity of the first solution in the first solution collecting chamber 106 is When the concentration of the first solution is less than the second preset value, the concentration of the first solution is balanced by using the return air reprocessing module 121, the second solution passes through the fifth outlet 127, and enters the heat source heat exchanger 129 under the action of the third pump body 128. The second solution flows into the cavity of the second shell-and-tube spray heat exchanger for spraying after being heated. At this time, the battery module exhaust air 132 flowing through the energy storage battery module 100 absorbs the heat of the energy storage battery pack 101. Due to the increase in temperature, the water vapor that can be carried by the battery module exhaust air 132 increases. In the process of spraying and heat exchange with the second solution, the battery module exhaust air 132 absorbs the water in the second solution and becomes air carrying water vapor 133, which is discharged to the environment and falls back to the second solution in the second solution collecting cavity 124. The concentration of the second solution increases, and the second solution is mixed with the first solution through the fourth outlet 126 and the second pump body 134 to adjust the concentration of the first solution. When the concentration of the first solution does not need to be adjusted, the concentration of the second solution is higher than the threshold value, and salt grains can be naturally crystallized and separated out.

[0047] In some embodiments of the present application, all air conditioning systems compress the high-temperature and high-pressure refrigerant discharged by the compressor 201, and then the high-temperature and high-pressure refrigerant enters the condenser 202 to be condensed and release heat. The heat is transferred to the second solution in the heat source heat exchanger 129 to realize heat exchange between the refrigerant and the second solution and heat the second solution. After the heat exchange between the refrigerant and the second solution, the refrigerant becomes a medium-pressure and low-temperature refrigerant liquid, which is throttled and depressurized by the electronic expansion valve 203 to become a low-temperature and low-pressure refrigerant liquid with supercooling degree, which enters the evaporator 204 to cool the first solution.

[0048] In some embodiments of the present application, the heat source heat exchanger 129 and the cold source heat exchanger 112 are liquid-liquid heat exchangers. The heat management device further includes an air conditioning system, which includes a refrigerant circulation loop. The refrigerant circulates in the refrigerant circulation loop composed of the compressor 201, the condenser 202, the electronic expansion valve 203 and the evaporator 204 in sequence. The refrigerant discharged by the compressor 201 first passes through the heat source heat exchanger 129, the refrigerant is condensed and releases heat, the second solution absorbs heat and increases in temperature, and then passes through the electronic expansion valve 203 to be throttled and depressurized. The refrigerant evaporates and absorbs heat through the cold source heat exchanger 112, absorbs the heat of the first solution, and cools the first solution. At this time, the heat source heat exchanger 129 is the condenser 202 of the air conditioning system, and the cold source heat exchanger 112 is the evaporator 204 of the air conditioning system. The heat source heat exchanger 129 realizes heating of the second solution by the refrigerant, and the cold source heat exchanger 112 realizes cooling of the first solution by the refrigerant.

[0049] In some embodiments of the present application, the electrical conductivity of the first solution in the first solution collecting cavity 106 is , and the electrical conductivity of the second solution in the second solution collecting cavity 124 is ≤0.08 μS / cm; and the electrical conductivity of the second solution in the second solution collecting cavity 124 is , and the electrical conductivity of the second solution in the second solution collecting cavity 124 is ≤0.5μS / cm; wherein, when greater than 0.08μS / cm, the three-way valve 111 switches, so that the first solution flows through the salt crystallization module 118, so that the salt is crystallized and precipitated, ensuring that is within a reasonable range; when is less than 0.002μS / cm, the third valve is opened, and the second solution is used to adjust the concentration of the first solution, ensuring that is within a reasonable range; when is greater than 0.5μS / cm, the third valve is also opened to adjust the concentration of the second solution, ensuring that it is within a reasonable range.

[0050] In some embodiments of the present application, according to the priority, the temperature of the energy storage battery is ensured, the humidity in the energy storage battery module 100 is ensured, and the salinity in the energy storage battery module 100 is ensured. The air supply amount and the air supply temperature both affect the battery temperature, the air supply amount is changed first, the temperature control cannot be controlled when the air supply amount is increased, the inlet air dehumidification and desalination module 103 is opened, the cooling capacity is adjusted, and the inlet air temperature is obtained. When the temperature reaches the set target, the humidity in the energy storage battery module 100 is determined, and if the humidity does not meet the requirements, the air supply temperature adjustment is continued. After the humidity in the energy storage battery module 100 is controlled, the desalination link is entered, the electrical conductivity of the first solution is controlled, and it is ensured to be lower than the salt fog conductivity in the marine air, and the desalination treatment of the inlet air can be realized by spraying.

[0051] The thermal management device of the present application can realize the desalination, dehumidification and cooling integrated thermal management of the marine environment energy storage battery, realize the desalination function of the energy storage battery module, avoid metal corrosion and shorten the service life of non-metal, combine with dehumidification, and avoid the short circuit and safety problem caused by salt-containing moisture conduction; the salt crystallization module and the second solution can be used to balance and adjust the concentration of the first solution, the waste heat of the exhaust air of the battery module can be used to increase the temperature of the second solution, and the moisture of the second solution can be taken away. It provides a solution for the safe and reliable operation of the energy storage battery system under the high temperature, high humidity and high salt environment of the ocean.

[0052] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An integrated thermal management device for desalination, dehumidification and cooling of marine environment energy storage batteries, characterized in that: The thermal management device comprises: Energy storage battery module, which includes energy storage battery pack, dehumidification interlayer between batteries and energy storage battery inlet and outlet air ducts; The air inlet dehumidification and desalination module includes a first shell-and-tube spray heat exchanger for direct heat exchange between the air inlet and the spray solution. The cavity of the first shell-and-tube spray heat exchanger is divided into three sections in the longitudinal direction, namely, a first solution spray chamber, a first solution-air inlet heat exchange section chamber, and a first solution collection chamber from top to bottom. The first solution spray chamber is provided with a plurality of first solution nozzles, and three outlets are provided at the bottom of the first solution collection chamber, namely, a first outlet, a second outlet, and a third outlet. The first solution spraying process dissolves salt in the air inlet, thereby achieving the purpose of desalination, cooling, and dehumidification of the air inlet. a cold source heat exchanger, wherein a first end of the cold source heat exchanger is connected to a first solution nozzle at an upper end of the first shell and tube spray heat exchanger via a pipeline, and a second end of the cold source heat exchanger is connected to a first outlet of the first solution collecting chamber via a pipeline; the cold source heat exchanger is used to exchange heat with the first solution to cool the first solution; The salt crystallization module includes a salt crystallization device, a first end of which is connected to a pipeline between a cold source heat exchanger and a first outlet via a pipeline, with a three-way valve provided at the connection point; a second end of which is connected to a second outlet of a first solution collecting chamber via a pipeline; the first solution flowing out of the first outlet is directed to the salt crystallization device by switching the three-way valve, and the desalted solution flows into the first solution collecting chamber via the second outlet; The return air reprocessing module includes a second shell-and-tube spray heat exchanger, wherein the cavity of the second shell-and-tube spray heat exchanger is divided into three parts from top to bottom: an upper section for a second solution spray chamber, a middle section for a second solution-return air heat exchange section, and a lower section for a second solution collection chamber. A plurality of second solution nozzles are provided in the second solution spray chamber, and a fourth outlet and a fifth outlet are provided at the bottom of the second solution collection chamber in the lower section. The fourth outlet is connected to the third outlet via a pipe and is used for adjusting the concentration of the first solution. A heat source heat exchanger, wherein the first end of the heat source heat exchanger is connected to the second solution nozzle at the upper end of the second shell and tube spray heat exchanger through a pipeline, and the second end of the heat source heat exchanger is connected to the fifth outlet of the second solution collecting chamber through a pipeline; the heat source heat exchanger is used to exchange heat with the second solution to increase the temperature of the second solution.

2. The integrated thermal management device for desalination, dehumidification and cooling of marine environment energy storage batteries according to claim 1 is characterized in that: The salt crystallization and precipitation device is also provided with a stirring component for stirring and accelerating the precipitation of salt. When salt crystallizes and precipitates on the stirring component, the stirring component is removed by opening the upper cover of the salt crystallization and precipitation device for desalination. The desalted solution can flow into the first solution collecting chamber through the second outlet.

3. The integrated thermal management device for desalination, dehumidification and cooling of marine environment energy storage batteries according to claim 1 is characterized in that: A first valve and a first pump body are provided on the pipeline connecting the first outlet and the three-way valve; a second valve and a second pump body are provided on the pipeline connecting the fourth outlet and the third outlet; a third valve and a third pump body are provided on the pipeline connecting the fifth outlet and the heat source heat exchanger, the first valve, the second valve and the third valve are used to control the on-off of the pipeline, and the first pump body, the second pump body and the third pump body are used to control the solution flow of the pipeline.

4. The integrated thermal management device for desalination, dehumidification and cooling of marine environment energy storage batteries according to claim 1, characterized in that: The cold source heat exchanger exchanges heat with the evaporator of the air-conditioning system, and the heat source heat exchanger exchanges heat with the condenser of the air-conditioning system. The air-conditioning system includes a refrigerant circulation loop, and the refrigerant circulates in the refrigerant circulation loop composed of a compressor, a condenser, an electronic expansion valve and an evaporator in sequence.

5. The integrated thermal management device for desalination, dehumidification and cooling of marine environment energy storage batteries according to claim 4 is characterized in that: The evaporator includes a first evaporator and a second evaporator arranged in parallel in a refrigerant circulation loop; the first evaporator exchanges heat with the cold source heat exchanger; along the air flow direction, the second evaporator is placed upstream of the air inlet dehumidification and desalination module, and the air first flows through the second evaporator for the first stage of cooling and dehumidification treatment, and then flows through the air inlet dehumidification and desalination module.

6. The integrated thermal management device for desalination, dehumidification and cooling of marine environment energy storage batteries according to claim 1, characterized in that: The cold source heat exchanger uses ocean air cooling to dissipate heat, thereby cooling the first solution; the hot source heat exchanger utilizes photovoltaic collectors on the sea for heating, thereby heating the second solution.

7. The integrated thermal management device for desalination, dehumidification and cooling of marine environment energy storage batteries according to claim 1, characterized in that: The first solution and the second solution are one or more of LiCl, BrCl, KCl, and NaCl solutions. The salt concentration in the first solution is lower than the salt concentration in the sea breeze; the salt concentration in the second solution is higher than the salt concentration in the sea breeze.

8. An integrated thermal management method for desalination, dehumidification and cooling of marine environment energy storage batteries, characterized in that: Using the integrated thermal management device for desalination, dehumidification and cooling of marine environment energy storage batteries according to any one of claims 1 to 7, the first solution passes through a three-way valve and enters a cold source heat exchanger for heat exchange. The cooled first solution is cooled and then sprayed out through the first solution nozzle to achieve dehumidification, cooling and desalination of the sea breeze. The treated airflow exchanges heat with the energy storage battery group through the energy storage battery inlet and outlet air ducts. The first solution dissolves the salt in the sea breeze during the spraying to achieve desalination and cool the sea breeze at the same time. After cooling, the water vapor partial pressure of the sea breeze is reduced, the water vapor condenses, and the moisture content of the air is reduced, thereby achieving the purpose of dehumidification and cooling.

9. The integrated thermal management method for desalination, dehumidification and cooling of marine environment energy storage batteries according to claim 8, characterized in that: When the conductivity of the first solution in the first solution collecting chamber is When the pressure is greater than a first preset value, the three-way valve is switched to force the solution into the salt crystallization device, and the stirring of the stirring component is set to accelerate the precipitation of salt. The crystallized salt is precipitated on the stirring component, and the upper cover of the salt crystallization device is opened to perform desalination. The desalted first solution flows into the first solution collecting chamber through the second outlet. When the conductivity of the first solution in the first solution collecting chamber is When it is less than the second preset value, the return air reprocessing module is used to achieve the concentration balance of the first solution, and the second solution enters the heat source heat exchanger through the fifth outlet. After the second solution is heated, it flows into the cavity of the second shell and tube spray heat exchanger for spraying. At this time, the wind flowing through the energy storage battery module absorbs the heat of the energy storage battery group. Due to the increase in temperature, the water vapor it can carry increases. In the process of spraying and heat exchange with the second solution, it absorbs the moisture in the second solution and becomes air carrying water vapor and is discharged to the environment. The concentration of the second solution that falls back to the second solution collecting chamber increases, and is mixed with the first solution through the fourth outlet to adjust the concentration of the first solution. When the concentration of the first solution does not need to be adjusted and the concentration of the second solution is higher than the threshold, salt particles can also be naturally crystallized.

10. The integrated thermal management method for desalination, dehumidification and cooling of marine environment energy storage batteries according to claim 8, characterized in that: Conductivity of the first solution in the first solution collecting chamber , and 0.002μS / cm ≤0.08μS / cm; conductivity of the second solution in the second solution collecting chamber , and 0.1μS / cm ≤0.5μS / cm; when When it is greater than 0.08μS / cm, the three-way valve switches to allow the first solution to flow through the salt crystallization module to allow salt crystals to precipitate, ensuring within a reasonable range; when Below 0.002μS / cm, use the second solution to adjust the concentration of the first solution to ensure within a reasonable range; when When the concentration is higher than 0.5 μS / cm, the concentration of the second solution can be adjusted by the first solution to ensure that it is within a reasonable range.

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