Immersed battery module and thermal management system therefor, and aerial vehicle

Abstract

Disclosed in the present application are an immersed battery module and a thermal management system therefor, and an aerial vehicle. The immersed battery module comprises a housing, a phase-change module, a cell set and a thermally conductive adhesive, wherein the housing is provided with an accommodation cavity, the accommodation cavity is used for being filled with a non-flammable gas and / or a heat exchange fluid, the phase-change module is arranged in the accommodation cavity, the cell set is arranged in the accommodation cavity, the cell set comprises cells, which are connected to the phase-change module, the thermally conductive adhesive is arranged in the accommodation cavity, and the thermally conductive adhesive connects the housing, the cell set and the phase-change module.

Description

Immersed battery module and its thermal management system, aircraft

[0001] This application claims priority to Chinese patent application number 202311145264.1, filed on September 6, 2023, entitled “Immersed Battery Module and Thermal Management System Thereof,” the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to an immersion battery module, a thermal management system thereof, and an aircraft. Background Art

[0003] A battery module includes a housing and battery cells housed within it. During use, the battery cells generate heat, resulting in a high temperature. To control the temperature of the battery cells, conventional battery modules also include a liquid cooling device. This device includes a liquid cooling tube abutting the battery cells, through which a cooling medium flows. However, this liquid cooling device indirectly dissipates heat from the battery cells through the liquid cooling tube, resulting in low heat dissipation efficiency. Technical issues

[0004] The main purpose of this application is to provide an immersion battery module to improve the heat dissipation efficiency of the battery cells. Technical Solutions

[0005] To achieve the above objectives, the submerged battery module proposed in this application includes:

[0006] The shell is provided with a receiving cavity, wherein the receiving cavity is used to be filled with non-combustible gas and / or heat exchange fluid;

[0007] A phase change module is provided in the receiving cavity;

[0008] A battery cell group is provided in the receiving cavity, wherein the battery cell group includes battery cells connected to the phase change module; and

[0009] The thermal conductive adhesive is disposed in the receiving cavity, and the thermal conductive adhesive connects the shell, the battery cell group, and the phase change module.

[0010] Optionally, the battery cell is configured as a soft-pack battery cell, and the battery cell group includes multiple soft-pack battery cells; or, the battery cell is configured as a square battery cell, and the battery cell group includes multiple square battery cells; or, the battery cell is configured as a cylindrical battery cell, and the battery cell group includes multiple cylindrical battery cells.

[0011] Optionally, the battery cell group includes a plurality of battery cells, the plurality of battery cells are arranged at intervals along the thickness direction of the battery cells, and a phase change module is provided between two adjacent battery cells.

[0012] Optionally, the material configuration of the phase change module is solid-solid phase change material or composite phase change material.

[0013] Optionally, the phase change temperature range of the phase change module is 35°C-55°C.

[0014] Optionally, the non-combustible gas includes one or more of inert gas, nitrogen, carbon dioxide, and sulfur hexafluoride.

[0015] Optionally, the thermal conductive adhesive immerses the battery core to a height that is at least 5% of the height of the battery core.

[0016] Optionally, the thermal conductive adhesive immerses the battery core to a height that is at least 20% of the height of the battery core.

[0017] Optionally, the thermal conductive adhesive immerses the battery core to a height of at most 50% of the height of the battery core.

[0018] Optionally, the shell is provided with a first communication port and a second communication port both communicating with the accommodating cavity, and the first communication port and the second communication port are used for allowing the heat exchange fluid and / or the non-combustible gas to flow through.

[0019] Optionally, the first connecting port is higher than the second connecting port, and the submerged battery module has a first state and a second state. When the submerged battery module switches from the first state to the second state, the first connecting port is used to allow the non-combustible gas to be introduced into the receiving chamber, and the second connecting port is used to allow the heat exchange fluid to be discharged from the receiving chamber. When the submerged battery module switches from the second state to the first state, the second connecting port is used to allow the heat exchange fluid to be introduced into the receiving chamber, and the first connecting port is used to allow the non-combustible gas to be discharged from the receiving chamber.

[0020] Optionally, the submerged battery module further includes a partition provided in the receiving cavity, and the partition is used to separate the second communication port and the thermal conductive adhesive.

[0021] Optionally, the submerged battery module further includes an isolation tube, one tube end of the isolation tube is connected to the second communication port, and the other tube end is higher than the thermal conductive adhesive and communicates with the receiving cavity.

[0022] Optionally, the heat exchange fluid is made of deionized water, electronic fluorinated liquid, hydrocarbons, esters, or silicone oils.

[0023] Optionally, the first communication port and the second communication port are connected to a flame retardant or an electrically controlled valve.

[0024] Optionally, the submerged battery module is applied to a battery system, which includes a plurality of electrically connected submerged battery modules, a first pipe connecting the plurality of first communication ports, and a second pipe connecting the plurality of second communication ports.

[0025] Optionally, the submerged battery module further includes a pressure relief device provided on the shell, and the pressure relief device is used to open when the pressure of the receiving chamber is greater than a preset value to connect the receiving chamber with the external environment.

[0026] Optionally, the pressure relief device is configured as a one-way pressure relief valve.

[0027] Optionally, the submerged battery module is applied to a battery system, which includes a plurality of electrically connected submerged battery modules and an exhaust pipe connected to a plurality of the pressure relief devices.

[0028] Optionally, a fireproof layer is provided on the inner surface of the exhaust pipe.

[0029] Optionally, the fireproof layer is configured as an aerogel layer or a fireproof cotton layer.

[0030] Optionally, the exhaust pipe is made of metal.

[0031] Optionally, the shell includes a shell body with an open end, a cover plate covering the opening, and screws locked to the shell body and the cover plate, and the shell body and the cover plate limit the receiving cavity.

[0032] Optionally, the shell further includes a sealing ring provided between the cover plate and the shell body.

[0033] The present application also proposes an immersion battery module for use in an aircraft, the immersion battery module comprising:

[0034] The shell is provided with a receiving cavity, wherein the receiving cavity is used to be filled with non-combustible gas and / or heat exchange fluid;

[0035] A phase change module is provided in the receiving cavity;

[0036] A battery cell group is provided in the receiving cavity, wherein the battery cell group includes battery cells connected to the phase change module; and

[0037] Thermally conductive adhesive, disposed in the receiving cavity, connecting the housing, the battery cell group, and the phase change module;

[0038] The shell is provided with a first communication port and a second communication port both communicating with the receiving cavity, the first communication port and the second communication port being used for allowing the heat exchange fluid and / or the non-combustible gas to flow through;

[0039] The first connecting port is higher than the second connecting port. The submerged battery module has a first state and a second state. When the submerged battery module switches from the first state to the second state, the first connecting port is used to allow the non-combustible gas to be introduced into the receiving chamber, and the second connecting port is used to allow the heat exchange fluid to be discharged from the receiving chamber. When the submerged battery module switches from the second state to the first state, the second connecting port is used to allow the heat exchange fluid to be introduced into the receiving chamber, and the first connecting port is used to allow the non-combustible gas to be discharged from the receiving chamber.

[0040] The present application also proposes a thermal management system, comprising:

[0041] A battery system is provided in an aircraft, the battery system comprising a plurality of the aforementioned submerged battery modules, the plurality of the submerged battery modules being electrically connected; and

[0042] A ground heat exchange mechanism is provided separately from the aircraft, and is used to adjust the temperature of the immersed battery module.

[0043] Optionally, the ground heat exchange mechanism includes a liquid-filled exhaust heat exchange system for communicating with the receiving chamber, and an air-filled and liquid-discharged heat exchange system for communicating with the receiving chamber, the liquid-filled and exhaust heat exchange system is used to transport heat exchange fluid to the receiving chamber and discharge non-combustible gas outside the receiving chamber, and the air-filled and liquid-discharged heat exchange system is used to transport non-combustible gas to the receiving chamber and discharge the heat exchange fluid outside the receiving chamber.

[0044] Optionally, the ground heat exchange mechanism includes a liquid storage tank storing a heat exchange fluid, a third pipeline connecting the outlet of the liquid storage tank and the receiving chamber, a fourth pipeline connecting the inlet of the liquid storage tank and the receiving chamber, a heat exchange device and a pump body provided in the third pipeline or the fourth pipeline, a first valve body provided in the third pipeline, a second valve body provided in the fourth pipeline, and a gas storage device for transporting the non-combustible gas to the receiving chamber, the third pipeline has a first pipe section located between the first valve body and the receiving chamber, the fourth pipeline has a second pipe section located between the second valve body and the receiving chamber, and the ground heat exchange mechanism also It includes a fifth pipeline connecting the first pipe section and the inlet of the liquid storage tank, a sixth pipeline connecting the gas storage device and the second pipe section, a third valve body provided on the fifth pipeline, and a fourth valve body provided on the sixth pipeline. The liquid storage tank has an exhaust port. The inflation and discharge heat exchange system includes the liquid storage tank, the third pipeline, the fourth pipeline, the heat exchange equipment, the pump body, the first valve body, and the second valve body. The inflation and discharge heat exchange system includes the gas storage device, the sixth pipeline, the second pipe section, the first pipe section, the fifth pipeline, the liquid storage tank, the third valve body, and the fourth valve body.

[0045] Optionally, the fourth pipeline further has a third pipeline section located between the second valve body and the liquid storage tank, and the fifth pipeline is connected to the inlet of the liquid storage tank through the third pipeline section.

[0046] Optionally, the fourth valve body is configured as a pressure reducing valve.

[0047] Optionally, the heat exchange device includes a direct evaporation refrigeration cycle device, an indirect water circulation refrigeration device, an absorption refrigeration device, or a semiconductor refrigeration device.

[0048] Optionally, the heat exchange device further includes a PTC heater or the pump body is configured as a heat pump.

[0049] Optionally, the submerged battery module also includes a battery management system electrically connected to the battery cells, and the ground heat exchange mechanism also includes a control system for controlling the liquid filling and exhaust heat exchange system and the gas filling and discharge heat exchange system. The control system is communicatively connected to the battery management system, and the control system obtains the status of the submerged battery module through the battery management system to control the liquid filling and exhaust heat exchange system and the gas filling and discharge heat exchange system.

[0050] Optionally, the ground heat exchange mechanism includes a charging device, and the charging device is used to charge the battery system.

[0051] Optionally, when the battery system is in a high temperature state, the temperature of the battery system is lowered to a preset temperature range by the ground heat exchange mechanism, and then the battery system is charged by the charging device; and / or,

[0052] When the battery system is in a low temperature state, the temperature of the battery system is raised to a preset temperature range by the ground heat exchange mechanism, and then the battery system is charged by the charging device.

[0053] Optionally, the preset temperature range is 25°C to 30°C.

[0054] The present application also proposes an aircraft, comprising a battery system, wherein the battery system comprises a plurality of the aforementioned submerged battery modules, and the plurality of submerged battery modules are electrically connected.

[0055] Optionally, the aircraft further comprises a fan arranged toward the battery system.

[0056] Optionally, the battery system is provided on the wings of the aircraft.

[0057] Optionally, the wing is provided with an air duct for flowing through the battery system, and the air duct is configured so that air can flow through the battery system through the air duct during the flight of the aircraft. Beneficial effects

[0058] In the technical solution of the present application, the submerged battery module includes a housing, a phase change module, and a cell group. The housing has a receiving cavity. The phase change module is disposed in the receiving cavity. The cell group is disposed in the receiving cavity, and the cell group includes cells connected to the phase change module. This allows the cells to directly exchange heat with the phase change module, thereby improving heat dissipation efficiency. Furthermore, the submerged battery module includes thermally conductive adhesive disposed in the receiving cavity, connecting the housing, cells, and phase change module. This allows heat from the cells to be transferred to the housing via the thermal adhesive, allowing heat exchange between the housing and the external environment, thereby improving heat dissipation efficiency. Furthermore, heat from the phase change module can be transferred to the housing via the thermal adhesive, allowing heat exchange between the housing and the external environment, thereby improving heat dissipation efficiency. Furthermore, the receiving cavity is configured to be filled with a non-combustible gas and / or a heat exchange fluid. When the receiving cavity is filled with the non-combustible gas, the cell group comes into contact with the non-combustible gas. This reduces the contact area between the cells and oxygen. When thermal runaway occurs in the submerged battery module, the non-combustible gas can suppress the combustion of the submerged battery module. It is worth mentioning that due to the filling of non-combustible gas, the water vapor in the receiving chamber is reduced, thereby reducing the occurrence of condensed water in the receiving chamber, thereby avoiding insulation failure of the submerged battery module. When the receiving chamber is filled with a heat exchange fluid, the heat exchange fluid can contact the battery cell for heat exchange to transfer the heat of the battery cell to the shell, and heat exchange occurs with the external environment through the shell, which is beneficial to improve the heat dissipation efficiency of the battery cell. When the receiving chamber contains both non-combustible gas and heat exchange fluid, the submerged battery module can have the effect of containing both non-combustible gas and heat exchange fluid at the same time, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0060] FIG1 is a schematic structural diagram of an embodiment of an immersion battery module of the present application;

[0061] FIG2 is a cross-sectional view of the submerged battery module in FIG1 ;

[0062] FIG3 is an exploded view of the submerged battery module in FIG1 ;

[0063] FIG4 is an exploded view of another embodiment of the submerged battery module of the present application;

[0064] FIG5 is a schematic structural diagram of a battery system according to an embodiment of a thermal management system of the present application;

[0065] FIG6 is a schematic structural diagram of the exhaust pipe in FIG5 ;

[0066] FIG7 is a cross-sectional view of the exhaust pipe in FIG6;

[0067] FIG8 is a schematic diagram of the structure of the battery system in FIG5 being installed on the wing of the aircraft;

[0068] FIG9 is a schematic structural diagram of the thermal management system of the present application;

[0069] FIG10 is a schematic diagram of a portion of the structure of the aircraft in FIG9 .

[0070] Description of Figure Numbers:

[0071] Reference number name Reference number name 100 thermal management system 560 second pipeline 200 aircraft 570 exhaust pipe 210 wing 580 fireproof layer 220 fan 590 battery management system 300 battery system 600 ground heat exchange mechanism 400 immersed battery module 610 liquid storage tank 410 shell 620 third pipeline 420 shell body 630 fourth pipeline 430 sealing ring 640 fifth pipeline 440 cover plate 650 sixth pipeline 450 receiving chamber 660 first valve body 460 first connecting port 670 second valve body 470 second connecting port 680 third valve body 510 phase change module 690 fourth valve body 520 battery cell group 700 gas storage device 521 battery cell 710 heat exchange device 530 thermal conductive adhesive 720 pump body 540 pressure relief device 730 control system 550 first pipeline

[0072] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0073] Implementation Methods of the Application

[0074] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0075] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0076] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection, indirect connection through an intermediate medium, or abutment; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0078] The battery module includes a shell and a battery cell disposed within the shell. During use, the battery cell generates heat, causing the battery cell temperature to be relatively high. To control the temperature of the battery cell, in the prior art, the battery module also includes a liquid cooling device, which includes a liquid cooling tube abutting the battery cell, and the liquid cooling tube is used to allow a cooling medium to flow. However, the liquid cooling device indirectly dissipates heat from the battery cell through the liquid cooling tube, resulting in a low heat dissipation efficiency. To this end, the present application proposes an immersion battery module, which aims to improve the heat dissipation efficiency of the battery cell.

[0079] 1 to 4 , in one embodiment of the present application, the submerged battery module 400 includes a shell 410, a phase change module 510, and a battery cell group 520. The shell 410 is provided with a receiving cavity 450. The phase change module 510 is disposed in the receiving cavity 450. The battery cell group 520 is disposed in the receiving cavity 450, and the battery cell group 520 includes a battery cell 521 connected to the phase change module 510. In this way, the battery cell 521 can directly exchange heat with the phase change module 510, which is beneficial to improving the heat dissipation efficiency of the battery cell 521. In addition, the submerged battery module 400 also includes a thermally conductive adhesive 530 disposed in the receiving cavity 450, and the thermally conductive adhesive 530 connects the shell 410, the battery cell 521, and the phase change module 510. In this way, heat from the battery cells 521 can be transferred to the housing 410 via the thermally conductive adhesive 530, allowing heat exchange between the housing 410 and the external environment, thereby improving heat dissipation efficiency for the battery cells 521. Furthermore, heat from the phase change module 510 can be transferred to the housing 410 via the thermally conductive adhesive 530, allowing heat exchange between the housing 410 and the external environment, thereby improving heat dissipation efficiency for the battery cells 521. Furthermore, the receiving cavity 450 is configured to be filled with a non-combustible gas and / or a heat exchange fluid. When the receiving cavity 450 is filled with the non-combustible gas, the battery cell assembly 520 comes into contact with the non-combustible gas. This reduces the contact area between the battery cells 521 and oxygen. If the submerged battery module 400 experiences thermal runaway, the non-combustible gas can suppress combustion. Notably, the filling of the non-combustible gas reduces water vapor within the receiving cavity 450, thereby reducing the formation of condensation within the receiving cavity 450 and thus preventing insulation failure in the submerged battery module 400. When the receiving cavity 450 is filled with a heat exchange fluid, the heat exchange fluid can contact and exchange heat with the battery cell 521, thereby transferring the heat of the battery cell 521 to the housing 410. Heat exchange occurs with the external environment through the housing 410, which helps improve the heat dissipation efficiency of the battery cell 521. When the receiving cavity 450 contains both non-combustible gas and heat exchange fluid, the submerged battery module 400 can simultaneously accommodate the non-combustible gas and heat exchange fluid. Detailed description is omitted here.

[0080] It should be noted that the non-combustible gas mentioned in this article refers to the gas other than combustible gas and combustion-supporting gas.

[0081] There are many structural forms of the battery cell group 520. Optionally, in one embodiment, the battery cell 521 is configured as a soft-pack battery cell 521, and the battery cell group 520 includes multiple square battery cells 521; or the battery cell 521 is configured as a square battery cell 521, and the battery cell group 520 includes multiple soft-pack battery cells 521; or, the battery cell 521 is configured as a cylindrical battery cell 521, and the battery cell group 520 includes multiple cylindrical battery cells 521.

[0082] Optionally, in one embodiment, the battery cell group 520 includes a plurality of battery cells 521, which are spaced apart along the thickness direction of the battery cells 521, with a phase change module 510 disposed between two adjacent battery cells 521. This allows heat between two adjacent battery cell groups 520 to be dissipated through the phase change module 510, preventing heat accumulation between the two adjacent battery cell groups 520, thereby improving the heat dissipation efficiency of the submerged battery module 400.

[0083] There are many types of phase change modules 510. Optionally, in one embodiment, the material configuration of the phase change module 510 is solid-solid phase change material or composite phase change material.

[0084] Optionally, in one embodiment, the phase change temperature range of the phase change module 510 is 35° C.-55° C. In this way, the phase change module 510 matches the battery cell 521 , and within this temperature range, the battery cell 521 has a high electrochemical activity.

[0085] Optionally, in one embodiment, the non-combustible gas includes one or more of an inert gas, nitrogen, carbon dioxide, and sulfur hexafluoride. In this way, the non-combustible gas reduces the contact area between the battery cell 521 and oxygen while not reacting with oxygen.

[0086] Optionally, in one embodiment, the thermal conductive adhesive 530 is immersed in the battery cell 521 to a height of at least 5% of the height of the battery cell 521. In this way, the thermal conductive adhesive 530 has a larger contact area with the battery cell 521, which is conducive to improving the heat dissipation efficiency of the battery cell 521.

[0087] Optionally, in one embodiment, the thermal conductive adhesive 530 immerses the battery cell 521 to a height of at least 20% of the height of the battery cell 521. In this way, the thermal conductive adhesive 530 and the battery cell 521 have a larger contact area, which is conducive to improving the heat dissipation efficiency of the battery cell 521.

[0088] Optionally, in one embodiment, the height of the thermally conductive adhesive 530 submerging the battery cell 521 is at most 50% of the height of the battery cell 521. In this way, the amount of thermally conductive adhesive 530 is not excessive, so that the submerged battery module 400 is not too heavy. When the submerged battery module 400 is used in the aircraft 200, it is beneficial to reduce the weight of the aircraft 200. Furthermore, in one embodiment, the housing 410 is provided with a first communication port 460 and a second communication port 470, both of which are connected to the receiving cavity 450. The first communication port 460 and the second communication port 470 are used to allow the heat exchange fluid and the non-combustible gas to flow through. In this way, the thermally conductive adhesive 530 does not occupy too much space in the receiving cavity 450, so that the receiving cavity 450 has a larger space for more heat exchange fluid to flow through, which is beneficial to improving the heat exchange efficiency between the heat exchange fluid and the submerged battery module 400. In addition, the contact area between the thermal conductive adhesive 530 and the battery cell 521 is not too large, so that the heat exchange fluid flowing through the receiving cavity 450 has a larger contact area with the battery cell 521, which is also beneficial to improving the heat exchange efficiency between the heat exchange fluid and the immersion battery module 400.

[0089] Optionally, in one embodiment, the housing 410 is provided with a first communication port 460 and a second communication port 470, both of which are in communication with the receiving chamber 450. The first communication port 460 and the second communication port 470 are used to allow a heat exchange fluid and / or non-combustible gas to flow through. In this way, the non-combustible gas and / or heat exchange fluid in the receiving chamber 450 can be replaced. In addition, to adjust the temperature of the submerged battery module 400, a heat exchange fluid can be introduced through the first communication port 460 or the second communication port 470 so that the heat exchange fluid is in direct contact with the submerged battery module 400, so that heat exchange occurs between the heat exchange fluid and the submerged battery module 400, thereby increasing or decreasing the temperature of the submerged battery module 400. When the temperature of the submerged battery module 400 is adjusted to a preset temperature, non-combustible gas can be introduced through the first communication port 460 or the second communication port 470. This not only drains the heat exchange fluid in the receiving chamber 450 but also fills the receiving chamber 450 with non-combustible gas. This prevents combustion of the submerged battery module 400 in the event of thermal runaway. It is worth noting that the preset temperature can be set according to actual needs and will not be elaborated on here.

[0090] Optionally, in one embodiment, the first communication port 460 is higher than the second communication port 470. The submerged battery module 400 has a first state and a second state. When the submerged battery module 400 switches from the first state to the second state, the first communication port 460 is used to introduce non-combustible gas into the receiving chamber 450, and the second communication port 470 is used to discharge the heat exchange fluid from the receiving chamber 450. In this manner, during this process, the non-combustible gas squeezes the heat exchange fluid from above, causing the heat exchange fluid to be discharged from the second communication port 470. This facilitates both the introduction of non-combustible gas into the receiving chamber 450 and the discharge of the heat exchange fluid from the receiving chamber 450, resulting in a gradual increase in the amount of non-combustible gas and a gradual decrease in the amount of heat exchange fluid within the receiving chamber 450. When the submerged battery module 400 switches from the second state to the first state, the second communication port is used to introduce the heat exchange fluid into the receiving chamber 450, and the first communication port 460 is used to discharge the non-combustible gas from the receiving chamber 450. In this way, the heat exchange fluid rises from the bottom to the top, squeezing the non-combustible gas, so that the non-combustible gas is discharged from the first communication port 460. This facilitates the introduction of the heat exchange fluid into the receiving chamber 450 and the discharge of the non-combustible gas from the receiving chamber 450, so that the amount of non-combustible gas in the receiving chamber 450 gradually decreases and the amount of heat exchange fluid gradually increases.

[0091] Optionally, in one embodiment, the submerged battery module 400 further includes a partition disposed within the receiving cavity 450, which is used to separate the second communication port 470 from the thermally conductive adhesive 530. Thus, during the process of loading the thermally conductive adhesive 530 into the receiving cavity 450, the partition prevents the thermally conductive adhesive 530 from flowing into the second communication port 470, thereby preventing blockage of the second communication port 470. However, the present design is not limited thereto. In other embodiments, the submerged battery module 400 further includes an isolation tube, one end of which is connected to the second communication port 470, and the other end of which is higher than the thermally conductive adhesive 530 and communicates with the receiving cavity 450.

[0092] Optionally, in one embodiment, the first communication port 460 and the second communication port 470 are connected to flame retardants or electrically controlled valves to prevent flames from escaping from the first communication port 460 and the second communication port 470 when thermal runaway occurs in the submerged battery module 400 .

[0093] Optionally, in one embodiment, the heat exchange fluid is made of deionized water, electronic fluorinated liquid, hydrocarbons, esters, or silicone oils. This allows the heat exchange fluid to exhibit high specific heat capacity, high thermal conductivity, insulation, non-flammability, zero flash point, non-toxicity, and low chemical activity. Optionally, in one embodiment, the electronic fluorinated liquid is a hydrofluoroether or hydrofluoroolefin. Optionally, in one embodiment, the hydrocarbon is a mineral oil or a synthetic hydrocarbon oil, such as transformer oil. Optionally, in one embodiment, the lipid is a triglyceride or a synthetic ester. Optionally, in one embodiment, the silicone oil is dimethyl silicone oil.

[0094] Referring also to FIG. 5 , in one embodiment, optionally, an immersed battery module 400 is applied to a battery system 300 , which includes multiple electrically connected immersed battery modules 400 , a first conduit 550 communicating with multiple first communication ports 460 , and a second conduit 560 communicating with multiple second communication ports 470 . This allows the multiple immersed battery modules 400 of the battery system 300 to share a single first conduit 550 and a single second conduit 560 , facilitating the transport of heat exchange fluid and non-combustible gas to and from the multiple receiving cavities 450 . However, the present design is not limited thereto. In other embodiments, the battery system 300 includes multiple electrically connected immersed battery modules 400 , multiple seventh conduits, and multiple eighth conduits, with each first communication port 460 correspondingly connected to a seventh conduit, and each second communication port 470 correspondingly connected to an eighth conduit.

[0095] Optionally, in one embodiment, the first conduit 550 can be configured as a hose. The hose is flexible and facilitates the relative positioning of the submerged battery modules 400. However, the present design is not limited thereto, and in other embodiments, the first conduit 550 can also be configured as a rigid tube.

[0096] Optionally, in one embodiment, the submerged battery module 400 further includes a pressure relief device 540 disposed within the housing 410. The pressure relief device 540 is configured to open when the pressure within the receiving chamber 450 exceeds a preset value, thereby connecting the receiving chamber 450 to the external environment. In this manner, when uncontrolled thermal diffusion of the battery cell 521 occurs and the pressure within the receiving chamber 450 exceeds the preset value, the pressure relief device 540 opens to relieve pressure, preventing the submerged battery module 400 from exploding and thereby improving the safety of the submerged battery module 400. The preset value may be, but is not limited to, the minimum pressure that the housing 410 can withstand.

[0097] Optionally, in one embodiment, the pressure relief device 540 is configured as a one-way pressure relief valve. This prevents the pressure relief valve from opening when the external environment is relatively hot, thereby preventing air from entering the receiving chamber 450 and preventing non-combustible gas from flowing out of the receiving chamber 450. This helps prevent the submerged battery module 400 from burning when thermal runaway occurs.

[0098] 6 and 7 , optionally, in one embodiment, an immersed battery module 400 is applied to a battery system 300 , which includes multiple electrically connected immersed battery modules 400 and an exhaust pipe 570 connected to multiple pressure relief devices 540 . In this way, multiple immersed battery modules 400 in the battery system 300 can share a single exhaust pipe 570 , which helps save production costs for the battery system 300 . Furthermore, the exhaust pipe 570 can also guide flue gas, which, when the battery system 300 is applied to an aircraft 200 , can prevent the flue gas from spreading within the aircraft 200 . However, the present design is not limited to this. In other embodiments, multiple exhaust pipes 570 are provided, with each pressure relief device 540 connected to one exhaust pipe 570 .

[0099] Optionally, in one embodiment, a fireproof layer 580 is provided on the inner surface of the exhaust pipe 570. This prevents the exhaust pipe 570 from melting, thereby improving the safety of the battery system 300.

[0100] Optionally, in one embodiment, the fireproof layer 580 is configured as an aerogel layer or a fireproof cotton layer. In this way, the exhaust pipe 570 can be prevented from melting, thereby improving the safety of the battery system 300.

[0101] Optionally, in one embodiment, the exhaust pipe 570 is made of metal to provide the exhaust pipe 570 with higher fire resistance. However, the present invention is not limited thereto, and in other embodiments, the exhaust pipe 570 may be made of other materials as long as the exhaust pipe 570 has higher fire resistance.

[0102] The housing 410 can have many structural forms. In one embodiment, the housing 410 includes a housing body 420 with an open end, a cover plate 440 covering the opening, and screws securing the housing body 420 and the cover plate 440. The housing body 420 and the cover plate 440 define a receiving cavity 450. However, the present invention is not limited thereto. In other embodiments, the housing 410 can have other structural forms, as long as the housing 410 includes the receiving cavity 450.

[0103] Optionally, in one embodiment, the housing 410 further includes a sealing ring 430 disposed between the cover plate 440 and the housing body 420 to improve the sealing performance of the housing 410 .

[0104] Optionally, in one embodiment, the submerged battery module 400 further includes a battery management system 590 electrically connected to the battery cells 521 , so that the battery management system 590 can collect the temperature of the battery cells 521 .

[0105] With reference to FIG9 , the present application also proposes a thermal management system 100, which includes an aircraft 200 equipped with a battery system 300 and a ground-based heat exchange mechanism 600. The battery system 300 includes a plurality of the aforementioned submerged battery modules 400. The specific structure of the battery system 300 is described with reference to the aforementioned embodiments. Since the present thermal management system 100 utilizes all the technical solutions of all the aforementioned embodiments, it at least possesses all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, which will not be described in detail here. The plurality of submerged battery modules 400 are electrically connected, and the ground-based heat exchange mechanism 600 is separate from the aircraft 200 and is used to regulate the temperature of the submerged battery modules 400. It is worth noting that the aircraft 200 may be, but is not limited to, an eVTOL (Electric Vertical Take-off and Landing) aircraft 200.

[0106] During the landing process of aircraft 200, the power of aircraft 200 is relatively high, and the battery system 300 generates a large amount of heat. The battery system 300 is easily exposed to high temperatures. For example, the temperature of the battery system 300 is greater than 40°C. At this time, the battery system 300 cannot be charged immediately to prevent the battery cells 521 from overheating. At this time, the temperature of the battery system 300 can be adjusted by the ground heat exchange mechanism 600 to reduce the temperature of the battery system 300. For example, the temperature of the battery system 300 can be reduced to between 25°C and 30°C, so that the battery cells 521 have higher electrochemical activity. When the temperature of the battery system 300 is lower, the battery system 300 can be charged. Under the regulation of the ground heat exchange mechanism 600, the ground maintenance time of the aircraft 200 is shortened, and the operational efficiency of the aircraft 200 is improved.

[0107] Alternatively, when the ambient temperature is low, for example, less than 15°C, the ground heat exchange mechanism 600 can be used to adjust the temperature of the battery system 300 to raise the temperature of the battery system 300, for example, to between 25°C and 30°C, thereby increasing the electrochemical activity of the battery cells 521. When the temperature of the battery system 300 is higher, the aircraft 200 can take off again. This reduces the loss of power in the battery system 300 and increases the environmental adaptability of the battery system 300.

[0108] Optionally, in one embodiment, the surface heat exchange mechanism 600 includes a liquid-filling and exhausting heat exchange system for communicating with the receiving chamber 450, and a gas-filling and exhausting heat exchange system for communicating with the receiving chamber 450. The liquid-filling and exhausting heat exchange system is used to deliver heat exchange fluid to the receiving chamber 450 and exhaust non-combustible gas from the receiving chamber 450, while the gas-filling and exhausting heat exchange system is used to deliver non-combustible gas to the receiving chamber 450 and exhaust the heat exchange fluid from the receiving chamber 450. In this way, to adjust the temperature of the submerged battery module 400, heat exchange fluid can be introduced and non-combustible gas can be exhausted through the liquid-filling and exhausting heat exchange system, so that the heat exchange fluid is in direct contact with the submerged battery module 400, allowing heat exchange between the heat exchange fluid and the submerged battery module 400, thereby increasing or decreasing the temperature of the submerged battery module 400. When the temperature of the submerged battery module 400 is adjusted, non-combustible gas can be introduced and the heat exchange fluid can be discharged through the inflation and drainage heat exchange system. On the one hand, the heat exchange fluid in the receiving cavity 450 is discharged, and on the other hand, the receiving cavity 450 is filled with non-combustible gas to avoid the submerged battery module 400 from burning when thermal runaway occurs.

[0109] Optionally, in one embodiment, the ground heat exchange mechanism 600 includes a liquid storage tank 610 storing a heat exchange fluid, a third pipeline 620 connecting the outlet of the liquid storage tank 610 and the receiving chamber 450, a fourth pipeline 630 connecting the inlet of the liquid storage tank 610 and the receiving chamber 450, a heat exchange device 710 and a pump body 720 provided in the third pipeline 620 or the fourth pipeline 630, a first valve body 660 provided in the third pipeline 620, a second valve body 670 provided in the fourth pipeline 630, and a gas storage device 700 for conveying non-combustible gas to the receiving chamber 450, the third pipeline 620 has a first pipe section located between the first valve body 660 and the receiving chamber 450, and the fourth pipeline 630 has a second pipe section located between the second valve body 670 and the receiving chamber 450. Two pipe sections, the ground heat exchange mechanism 600 also includes a fifth pipeline 640 connecting the first pipe section and the inlet of the liquid storage tank 610, a sixth pipeline 650 connecting the gas storage device 700 and the second pipe section, a third valve body 680 provided on the fifth pipeline 640, and a fourth valve body 690 provided on the sixth pipeline 650. The liquid storage tank 610 has an exhaust port. The liquid filling and exhaust heat exchange system includes the liquid storage tank 610, the third pipeline 620, the fourth pipeline 630, the heat exchange equipment 710, the pump body 720, the first valve body 660, and the second valve body 670. The gas filling and liquid discharge heat exchange system includes the gas storage device 700, the sixth pipeline 650, the second pipe section, the first pipe section, the fifth pipeline 640, the liquid storage tank 610, the third valve body 680, and the fourth valve body 690.

[0110] In this way, when the temperature of the battery system 300 needs to be adjusted, the filling and exhaust heat exchange system is opened and the filling and exhaust heat exchange system is closed, so that the first valve body 660, the second valve body 670, the heat exchange device 710, and the pump body 720 are opened, and the third valve body 680 and the fourth valve body 690 are closed. Under the action of the pump body 720, the heat exchange fluid circulates in the filling and exhaust heat exchange system and the receiving chamber 450. When the heat exchange fluid flows through the heat exchange device 710, the temperature of the heat exchange fluid is increased or decreased under the action of the heat exchange device 710, so that the temperature difference between the heat exchange fluid and the battery cell 521 is large. The heat exchange fluid with a large temperature difference with the battery cell 521 enters the receiving chamber 450 through the third pipeline 620 and exchanges heat with the battery cell 521, which is conducive to rapid heating or cooling of the battery cell 521 and better temperature uniformity of the battery cell 521. Furthermore, the pump body 720 ensures that the battery cell 521 is always in contact with the heat exchange fluid, which has a large temperature difference with the battery cell 521, facilitating rapid heating or cooling of the battery cell 521. The heat exchange fluid flows into the receiving chamber 450, discharging the non-combustible gas from the receiving chamber 450. The discharged non-combustible gas can then flow through the fourth pipe 630 to the liquid storage tank 610, where it is discharged to the outside environment through the exhaust port of the liquid storage tank 610. Furthermore, the heat exchange fluid, after exchanging heat with the battery cell 521, can flow through the fourth pipe 630 to the liquid storage tank 610.

[0111] When the battery cell 521 reaches a preset temperature, the liquid filling and exhaust heat exchange system is closed and the gas filling and exhaust heat exchange system is opened, closing the first valve body 660, the second valve body 670, the heat exchange device 710, and the pump body 720, while opening the third valve body 680 and the fourth valve body 690. Under the action of the gas storage device 700, the non-combustible gas flows sequentially through the sixth pipeline 650, the second pipe section, the receiving chamber 450, the first pipe section, the fifth pipeline 640, and the liquid storage tank 610, and finally discharges to the outside environment through the exhaust port of the liquid storage tank 610. As the non-combustible gas passes through the receiving chamber 450, it can carry the heat exchange fluid to the liquid storage tank 610.

[0112] It will be appreciated that, because the aircraft 200 and the ground heat exchange mechanism 600 are separate components, the third pipeline 620 and the fourth pipeline 630 are each detachably connected to the battery system 300. Alternatively, in one embodiment, the third pipeline 620 is connected to the second communication port 470, and the third pipeline 620 is connected to the first communication port 460. Alternatively, in one embodiment, the third pipeline 620 is connected to the second communication port 470 via the second pipeline 560, and the third pipeline 620 and the second pipeline 560 are detachably connected. The fourth pipeline 630 is connected to the first communication port 460 via the first pipeline 550, and the fourth pipeline 630 is detachably connected to the first pipeline 550.

[0113] Because aircraft 200 and ground-based heat exchange mechanism 600 are separate components, the liquid filling and exhaust heat exchange system and the gas filling and exhaust liquid heat exchange system are not located on aircraft 200, which helps reduce the weight of aircraft 200. Furthermore, after adjusting the temperature of battery cells 521, the accommodating cavity 450 is filled with non-flammable gas, while the heat exchange fluid is discharged from the accommodating cavity 450. Therefore, aircraft 200 maintains a low weight during flight, and heat exchange fluid leakage is prevented.

[0114] Optionally, in one embodiment, the fourth pipeline 630 further includes a third pipeline section located between the second valve body 670 and the liquid storage tank 610, and the fifth pipeline 640 is connected to the inlet of the liquid storage tank 610 through the third pipeline section. This helps to reduce the length of the fifth pipeline 640 and save production costs of the thermal management mechanism.

[0115] Optionally, in one embodiment, the fourth valve body 690 is configured as a pressure reducing valve. In this way, the air pressure in the gas storage device 700 is relatively high. When the fourth valve body 690 is opened, the non-combustible gas will flow into the receiving chamber 450 under the action of the high air pressure.

[0116] The pressure reducing valve can release the high-pressure, non-combustible gas within the gas storage device 700, thereby protecting the housing 410 and the pipeline from excessive pressure and, consequently, damage. However, the present design is not limited thereto. In other embodiments, the gas storage device 700 may further include a pump to provide power for the non-combustible gas to flow into the receiving chamber 450.

[0117] Optionally, in one embodiment, heat exchange device 710 comprises a direct evaporative refrigeration cycle. Thus, heat exchange device 710 can regulate the temperature of the heat exchange fluid, thereby regulating the temperature of submerged battery module 400. However, the present design is not limited thereto. In other embodiments, heat exchange device 710 regulates the temperature of the heat exchange fluid using an indirect water circulation refrigeration device, an absorption refrigeration device, or a semiconductor refrigeration device.

[0118] Optionally, in one embodiment, the heat exchange device 710 further includes a PTC heater or the pump body 720 is configured as a heat pump, which is beneficial for improving the temperature raising capability of the ground heat exchange mechanism 600 for the heat exchange fluid.

[0119] Optionally, in one embodiment, the ground heat exchange mechanism 600 includes a charging device for charging the battery system 300. In this way, the ground heat exchange mechanism 600 not only regulates the temperature of the battery system 300 but also charges the battery system 300, thereby shortening the ground maintenance time of the aircraft 200 and improving the operational efficiency of the aircraft 200.

[0120] 10 , optionally, in one embodiment, the aircraft 200 further includes a fan 220 disposed toward the battery system 300 . Thus, the fan 220 cools the battery system 300 , thereby improving the heat dissipation efficiency of the submerged battery module 400 .

[0121] Referring also to FIG8 , optionally, in one embodiment, the battery system 300 is installed on the wing 210 of the aircraft 200. This prevents the battery system 300 from occupying space on the fuselage of the aircraft 200. Furthermore, in one embodiment, the wing 210 is provided with an air duct that flows through the battery system 300. During flight of the aircraft 200, air can flow through the battery system 300 through the air duct, thereby dissipating heat from the battery system 300.

[0122] Optionally, in one embodiment, the surface heat exchange mechanism 600 further includes a control system 730 for controlling the liquid filling and exhaust heat exchange system and the gas filling and exhaust heat exchange system. The control system 730 is also communicatively connected to the battery management system 590. In this way, the control system 730 can obtain the status of the submerged battery module 400 to control the liquid filling and exhaust heat exchange system and the gas filling and exhaust heat exchange system. Optionally, in one embodiment, the control system 730 controls the liquid filling and exhaust heat exchange system and the gas filling and exhaust heat exchange system by controlling the first valve body 660, the second valve body 670, the third valve body 680, the fourth valve body 690, the pump body 720, and the refrigeration equipment.

[0123] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An immersion battery module, wherein: include: The shell is provided with a receiving chamber, wherein the receiving chamber is used to be filled with non-combustible gas and / or heat exchange fluid; A phase change module is arranged in the receiving cavity; A battery cell group, disposed in the receiving cavity, the battery cell group comprising a battery cell connected to the phase change module; as well as The thermally conductive adhesive is disposed in the receiving cavity, and the thermally conductive adhesive connects the shell, the battery core group, and the phase change module.

2. The submerged battery module according to claim 1, wherein: The battery cell is configured as a soft-pack battery cell, and the battery cell group includes a plurality of the soft-pack battery cells; or, the battery cell is configured as a square battery cell, and the battery cell group includes a plurality of the square battery cells; or, the battery cell is configured as a cylindrical battery cell, and the battery cell group includes a plurality of the cylindrical battery cells; And / or, the battery cell group comprises a plurality of battery cells, the plurality of battery cells are arranged at intervals along the thickness direction of the battery cells, and a phase change module is arranged between two adjacent battery cells; And / or, the material configuration of the phase change module is solid-solid phase change material or composite phase change material; And / or, the phase change temperature range of the phase change module is 35°C-55°C; And / or, the non-combustible gas includes one or more of an inert gas, nitrogen, carbon dioxide, and sulfur hexafluoride.

3. The submerged battery module according to claim 1, wherein: The thermal conductive adhesive immerses the battery core to a height of at least 5% of the height of the battery core; or the thermal conductive adhesive immerses the battery core to a height of at least 20% of the height of the battery core.

4. The submerged battery module according to claim 1, wherein: The thermal conductive adhesive immerses the battery core to a height of at most 50% of the height of the battery core.

5. The submerged battery module according to claim 1, wherein: The shell is provided with a first communication port and a second communication port both communicating with the accommodating cavity, and the first communication port and the second communication port are used for allowing the heat exchange fluid and / or the non-combustible gas to flow through.

6. The submerged battery module according to claim 5, wherein: The first connecting port is higher than the second connecting port, and the submerged battery module has a first state and a second state. When the submerged battery module switches from the first state to the second state, the first connecting port is used to allow the non-combustible gas to be introduced into the receiving chamber, and the second connecting port is used to allow the heat exchange fluid to be discharged from the receiving chamber. When the submerged battery module switches from the second state to the first state, the second connecting port is used to allow the heat exchange fluid to be introduced into the receiving chamber, and the first connecting port is used to allow the non-combustible gas to be discharged from the receiving chamber.

7. The submerged battery module according to claim 6, wherein: The submerged battery module further comprises a partition provided in the receiving cavity, the partition being used to separate the second communication port and the thermally conductive adhesive; or the submerged battery module further comprises an isolation tube, one tube opening of the isolation tube being connected to the second communication port, and the other tube opening being higher than the thermally conductive adhesive and being connected to the receiving cavity; And / or, the heat exchange fluid is made of deionized water, electronic fluorinated liquid, hydrocarbons, esters, or silicone oils; And / or, the first communication port and the second communication port are connected to a flame retardant or an electric control valve.

8. The submerged battery module according to claim 5, wherein: The submerged battery module is applied to a battery system, and the battery system includes a plurality of electrically connected submerged battery modules, a first pipeline connecting a plurality of the first connecting ports, and a second pipeline connecting a plurality of the second connecting ports.

9. The submerged battery module according to claim 1, wherein: The submerged battery module further comprises a pressure relief device arranged on the shell, and the pressure relief device is used to open when the pressure of the receiving chamber is greater than a preset value to connect the receiving chamber with the external environment.

10. The submerged battery module according to claim 9, wherein: The pressure relief device is configured as a one-way pressure relief valve.

11. The submerged battery module according to claim 9, wherein: The submerged battery module is applied to a battery system, and the battery system includes a plurality of electrically connected submerged battery modules and an exhaust pipe connected to a plurality of the pressure relief devices.

12. The submerged battery module according to claim 11, wherein: The inner surface of the exhaust pipe is provided with a fireproof layer; And / or, the exhaust pipe is made of metal.

13. The submerged battery module according to claim 11, wherein: The inner surface of the exhaust pipe is provided with a fireproof layer, and the fireproof layer is configured as an aerogel layer or a fireproof cotton layer.

14. The submerged battery module according to claim 1, wherein: The shell comprises a shell body with an opening at one end, a cover plate covering the opening, and screws locked to the shell body and the cover plate. The shell body and the cover plate limit the receiving cavity.

15. The submerged battery module according to claim 14, wherein: The shell further includes a sealing ring arranged between the cover plate and the shell body.

16. An immersion battery module, wherein: Applied to aircraft, the submerged battery module comprises: The shell is provided with a receiving chamber, wherein the receiving chamber is used to be filled with non-combustible gas and / or heat exchange fluid; A phase change module is arranged in the receiving cavity; A battery cell group, disposed in the receiving cavity, the battery cell group comprising a battery cell connected to the phase change module; and Thermally conductive adhesive, disposed in the receiving cavity, the thermally conductive adhesive connecting the housing, the battery cell group, and the phase change module; The shell is provided with a first communication port and a second communication port both of which are communicated with the receiving cavity, and the first communication port and the second communication port are used for allowing the heat exchange fluid and / or the non-combustible gas to flow through; The first connecting port is higher than the second connecting port, and the submerged battery module has a first state and a second state. When the submerged battery module switches from the first state to the second state, the first connecting port is used to allow the non-combustible gas to be introduced into the receiving chamber, and the second connecting port is used to allow the heat exchange fluid to be discharged from the receiving chamber. When the submerged battery module switches from the second state to the first state, the second connecting port is used to allow the heat exchange fluid to be introduced into the receiving chamber, and the first connecting port is used to allow the non-combustible gas to be discharged from the receiving chamber.

17. A thermal management system, wherein: include: A battery system, provided in an aircraft, the battery system comprising a plurality of submerged battery modules according to any one of claims 1 to 15, the plurality of submerged battery modules being electrically connected; as well as A ground heat exchange mechanism is provided separately from the aircraft, and the ground heat exchange mechanism is used to adjust the temperature of the immersed battery module.

18. The thermal management system of claim 17, wherein: The ground heat exchange mechanism includes a liquid-filled and exhaust-gas heat exchange system for communicating with the receiving chamber, and a gas-filled and liquid-discharged heat exchange system for communicating with the receiving chamber. The liquid-filled and exhaust-gas heat exchange system is used to transport heat exchange fluid to the receiving chamber and discharge non-combustible gas outside the receiving chamber, and the gas-filled and liquid-discharged heat exchange system is used to transport non-combustible gas to the receiving chamber and discharge the heat exchange fluid outside the receiving chamber.

19. The thermal management system of claim 18, wherein: The ground heat exchange mechanism includes a liquid storage tank storing a heat exchange fluid, a third pipeline connecting the outlet of the liquid storage tank and the receiving chamber, a fourth pipeline connecting the inlet of the liquid storage tank and the receiving chamber, a heat exchange device and a pump body arranged in the third pipeline or the fourth pipeline, a first valve body arranged in the third pipeline, a second valve body arranged in the fourth pipeline, and a gas storage device for conveying the non-flammable gas to the receiving chamber, the third pipeline has a first pipe section located between the first valve body and the receiving chamber, the fourth pipeline has a second pipe section located between the second valve body and the receiving chamber, and the ground heat exchange mechanism also includes A fifth pipeline connecting the first pipe section and the inlet of the liquid storage tank, a sixth pipeline connecting the gas storage device and the second pipe section, a third valve body arranged on the fifth pipeline, and a fourth valve body arranged on the sixth pipeline, the liquid storage tank has an exhaust port, the inflation and discharge heat exchange system includes the liquid storage tank, the third pipeline, the fourth pipeline, the heat exchange equipment, the pump body, the first valve body, and the second valve body, the inflation and discharge heat exchange system includes the gas storage device, the sixth pipeline, the second pipe section, the first pipe section, the fifth pipeline, the liquid storage tank, the third valve body, and the fourth valve body.

20. The thermal management system of claim 19, wherein: The fourth pipeline also has a third pipeline section located between the second valve body and the liquid storage tank, and the fifth pipeline is connected to the inlet of the liquid storage tank through the third pipeline section; And / or, the fourth valve body is configured as a pressure reducing valve.

21. The thermal management system of claim 19, wherein: The heat exchange equipment includes direct evaporation refrigeration cycle equipment, indirect water circulation refrigeration equipment, absorption refrigeration equipment or semiconductor refrigeration equipment.

22. The thermal management system of claim 21, wherein: The heat exchange device further includes a PTC heater or the pump body is configured as a heat pump.

23. The thermal management system of claim 17, wherein: The submerged battery module also includes a battery management system electrically connected to the battery cells, and the ground heat exchange mechanism also includes a control system for controlling the liquid filling and exhaust heat exchange system and the gas filling and liquid discharge heat exchange system. The control system is communicatively connected to the battery management system, and the control system obtains the state of the submerged battery module through the battery management system to control the liquid filling and exhaust heat exchange system and the gas filling and liquid discharge heat exchange system.

24. The thermal management system of claim 17, wherein: The ground heat exchange mechanism also includes a charging device, which is used to charge the battery system.

25. The thermal management system of claim 24, wherein: When the battery system is in a high temperature state, the temperature of the battery system is lowered to a preset temperature range by the ground heat exchange mechanism, and then the battery system is charged by the charging device; and / or, When the battery system is in a low temperature state, the temperature of the battery system is raised to a preset temperature range through the ground heat exchange mechanism, and then the battery system is charged through the charging device.

26. The thermal management system of claim 25, wherein: The preset temperature range is 25°C to 30°C.

27. An aircraft, wherein: A battery system is provided, wherein the battery system comprises a plurality of submerged battery modules as claimed in any one of claims 1 to 15, wherein the plurality of submerged battery modules are electrically connected.

28. The aircraft of claim 27, wherein: The aircraft also includes a fan disposed toward the battery system; And / or, the battery system is arranged on the wing of the aircraft.

29. The aircraft of claim 27, wherein: The battery system is arranged on the wing of the aircraft, and the wing is provided with an air duct through which air flows through the battery system. The air duct is configured so that air can flow through the battery system through the air duct during the flight of the aircraft.

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