Battery charging thermal management method, device, equipment, medium and product

Abstract

The present application discloses a battery charging thermal management method, device, equipment, medium and product, which relates to the field of thermal management technology. The battery charging thermal management method includes: obtaining the current operating scenario data of the aircraft; the current operating scenario data includes the mission airspace temperature information and flight profile information of the aircraft; matching to obtain the target battery temperature corresponding to the current operating scenario data; thermally managing the battery pack of the aircraft during the charging process, so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process. The present application can make the thermal management task more adaptable when the battery is charging.

Description

Technical Field

[0001] The present application relates to the field of thermal management technology, and in particular to battery charging thermal management methods, devices, equipment, media and products. Background Art

[0002] For aircraft such as eVTOL (Electric Vertical Takeoff and Landing), batteries are their power component.

[0003] In the related technology, the thermal management strategy applied to battery charging is mainly to control the temperature sensor to monitor the temperature of each battery module in the battery through the battery thermal management system. When the temperature exceeds or falls below the suitable temperature range for battery charging, a liquid cooling device or an air cooling device is used to heat or cool the inside of the battery.

[0004] However, for aircraft, there is a large difference between the ground ambient temperature where the aircraft is parked and the air ambient temperature when performing missions. When charging, only considering the temperature during charging will result in the need to improve battery thermal management and mission adaptability. Summary of the invention

[0005] The main purpose of this application is to provide a battery charging thermal management method, device, equipment, medium and product, aiming to solve the technical problem that only considering the temperature during charging will lead to the need to improve the battery thermal management and task adaptability.

[0006] To achieve the above objectives, the present application proposes a battery charging thermal management method, which includes:

[0007] Obtain the current operation scenario data of the aircraft; the current operation scenario data includes the mission airspace temperature information and flight profile information of the aircraft;

[0008] Match and obtain the target battery temperature corresponding to the current operating scenario data;

[0009] During the charging process, the battery pack of the aircraft is thermally managed so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process.

[0010] In one embodiment, the flight profile information includes a plurality of flight phase information, and each flight phase information includes at least a flight duration and an estimated output power.

[0011] In one embodiment, the current operating scenario data also includes material parameters of the phase change material; wherein a battery cell cavity is defined within the battery pack, and the phase change material is within the battery cell cavity.

[0012] In one embodiment, the material parameter includes at least one of phase change temperature, material mass, three-dimensional thermal conductivity, and phase change latent heat value.

[0013] In one embodiment, the current operation scenario data also includes at least one of takeoff ambient temperature information of the takeoff location, landing ambient temperature information of the landing destination, and charging task information.

[0014] In one embodiment, the charging task information includes at least one of a maximum charging time, a battery system state before charging, a target battery system state, and a maximum charging power that can be provided by the ground equipment.

[0015] In one embodiment, matching and obtaining a target battery temperature corresponding to the current operating scenario data includes:

[0016] The target battery temperature and the target heat exchange fluid parameters corresponding to the current operating scenario data are matched; wherein the aircraft includes a heat exchange fluid interface connected to the battery cavity, and the ground charging thermal management device is configured to provide the heat exchange fluid to the aircraft when connected to the heat exchange fluid interface, so that the heat exchange fluid is filled into the battery cavity to exchange heat with the phase change material and / or the battery cell;

[0017] During the charging process, the battery pack of the aircraft is thermally managed so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature, including:

[0018] Based on the target heat exchange fluid parameters, the heat exchange fluid is provided to the aircraft so that during the charging process, the battery temperature of the battery pack reaches and is maintained at the target battery temperature.

[0019] In one embodiment, the target heat exchange fluid parameter includes at least one of the heat exchange fluid type, heat exchange fluid inlet temperature, heat exchange fluid flow rate, heat exchange fluid introduction time, and heat exchange fluid liquid direction switching strategy.

[0020] In one embodiment, matching the target battery temperature and the target heat exchange fluid parameter corresponding to the current operating scenario data includes:

[0021] Query the preset thermal management strategy table to match the target charging thermal management parameters corresponding to the current operating scenario data; the preset thermal management strategy table includes a mapping relationship between the operating scenario data and the charging thermal management parameters, and the charging thermal management parameters include battery temperature and heat exchange fluid parameters; or

[0022] The current operating scenario data is input into the thermal management model to obtain the target charging thermal management parameters output by the thermal management model; wherein the thermal management model is trained using thermal management training samples, the features of the thermal management training samples include the operating scenario data, and the labels of the thermal management training samples are the corresponding charging thermal management parameters.

[0023] In one embodiment, the preset thermal management strategy table is queried to match the target charging thermal management parameters corresponding to the current operating scenario data, including:

[0024] Based on the characteristic parameters of the battery pack, determine the corresponding preset thermal management strategy table;

[0025] Query the preset thermal management strategy table to match the target charging thermal management parameters corresponding to the current operating scenario data; or

[0026] Input the current operating scenario data into the thermal management model to obtain the target charging thermal management parameters output by the thermal management model, including:

[0027] Determine the corresponding thermal management model based on the characteristic parameters of the battery pack;

[0028] The current operating scenario data is input into the thermal management model to obtain the target charging thermal management parameters output by the thermal management model.

[0029] In one embodiment, before matching and obtaining the target charging thermal management parameters corresponding to the current operating scenario data, the method further includes:

[0030] Obtain the thermal model of the aircraft's battery pack and multiple sets of flight data;

[0031] Perform simulations and / or experiments based on the thermal model and flight data to generate a preset thermal management strategy table or thermal management training samples.

[0032] In one embodiment, obtaining current operation scene data of an aircraft includes:

[0033] When the aircraft is connected to the ground charging thermal management device, obtain the flight status information of the aircraft;

[0034] When the flight status information is normal, obtain the current running scene data.

[0035] In addition, to achieve the above-mentioned purpose, the present application also proposes a battery charging thermal management device, the battery charging thermal management device comprising:

[0036] An information acquisition module is used to acquire the current operation scene data of the aircraft; the current operation scene data includes the mission airspace temperature information and flight profile information of the aircraft;

[0037] A temperature determination module is used to match and obtain a target battery temperature corresponding to the current operating scenario data;

[0038] The thermal management module is used to perform thermal management on the battery pack of the aircraft during the charging process so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process.

[0039] In addition, to achieve the above-mentioned objectives, the present application also proposes a ground charging thermal management device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the battery charging thermal management method as described above.

[0040] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium. A computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the battery charging thermal management method as described above are implemented.

[0041] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the battery charging thermal management method as described above are implemented.

[0042] One or more technical solutions proposed in this application have at least the following technical effects:

[0043] Compared with the related art that only considers the real-time temperature of the battery when charging the battery, the present application determines the corresponding target battery temperature for different thermal management scenarios, especially for different mission airspace temperature information and different flight profile information, thereby making the corresponding thermal management task during battery charging more adaptable.

[0044] In addition, compared with traditional battery thermal management strategies that only use battery temperature as an indicator parameter, the present application introduces phase change material parameters, so that when the battery pack is thermally managed, the final temperature of the battery pack is the temperature reached by both the phase change material and the battery cell. In this way, the phase change material in the battery pack can be determined according to the mission airspace and flight mission to determine whether the phase change material needs to store heat in advance on the ground and then reach the target airspace to release latent heat to keep the battery warm, or after cooling on the ground, the phase change material absorbs the heat emitted by the battery cell in the target airspace and uses the latent heat to cool the battery.

[0045] In addition, this application also introduces battery charging conditions as a reference indicator, combines the charging strategy with the thermal management strategy, and adjusts the thermal management parameters according to the charging conditions to ensure that the battery is within the target temperature range while maximizing the system charging rate and reducing the ground charging time. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 A schematic diagram of a process flow provided for the first embodiment of the battery charging thermal management method of the present application;

[0049] Figure 2 A schematic diagram of the process of performing tasks for the aircraft in this application;

[0050] Figure 3 This is a schematic diagram of the module structure of the battery charging thermal management device according to an embodiment of the present application;

[0051] Figure 4 Schematic diagram of the device structure of the hardware operating environment involved in the battery charging thermal management method in the embodiment of the present application.

[0052] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0053] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0054] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0055] The main solution of the embodiment of the present application is: obtaining the current operating scenario data of the aircraft; the current operating scenario data includes the mission airspace temperature information and flight profile information of the aircraft; matching to obtain the target battery temperature corresponding to the current operating scenario data; performing thermal management on the battery pack of the aircraft during the charging process, so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process.

[0056] In the embodiments of the present application, for ease of description, the following description is made using the ground charging thermal management device as the execution entity.

[0057] With the rapid development of eVTOL, the safety of battery packs, as an important power component of eVTOL, has attracted much attention. In order to keep the battery running in a safe state for a long time, the thermal management strategy set in the battery thermal management system is usually used to manage the battery thermally, so that the battery can be kept at the optimal operating temperature in the flight state, reduce the temperature difference between each battery module, and can be charged quickly at a high rate in the ground preparation state, thereby improving the duty flight efficiency of eVTOL.

[0058] In the related technologies, the thermal management strategy applied to battery packs is mainly to control the temperature sensor to monitor the temperature of each battery module in the battery pack through the battery thermal management system. When the temperature exceeds or falls below the preset maximum temperature standard, minimum temperature standard and temperature difference standard when the battery is charged, a liquid cooling device or an air cooling device is used to heat or cool the inside of the battery. However, in the operation scenarios of aircraft such as eVTOL, there may be rapid changes in the ground ambient temperature and the air ambient temperature, as well as the possibility of a large difference in ambient temperature between the take-off and landing sites, resulting in poor compatibility between the thermal management strategy provided by the related technologies and the suitable working conditions of eVTOL batteries.

[0059] The present application provides a solution for different thermal management scenarios, especially for different mission airspace temperature information and different flight profile information, to determine the corresponding target battery temperature, thereby making the thermal management task adaptable during the corresponding battery charging more suitable.

[0060] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a ground charging thermal management device, etc. The following takes the ground charging thermal management device as an example to illustrate this embodiment and the following embodiments.

[0061] Based on this, the present application embodiment provides a battery charging thermal management method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the charging thermal management method of the present application.

[0062] In this embodiment, the battery charging thermal management method includes steps S10 to S30:

[0063] Step S10: Acquire the operation scenario data of the aircraft.

[0064] The current operation scenario data includes aircraft mission airspace temperature information and flight profile information.

[0065] Step S20: matching and obtaining the target battery temperature corresponding to the current operating scenario data.

[0066] Step S30: thermally manage the battery pack of the aircraft during the charging process so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process.

[0067] It is understandable that the aircraft may be a flying car, eVTOL, or drone, etc., which uses batteries as a power source. The following description takes the aircraft being eVTOL as an example.

[0068] Specifically, the eVTOL has a battery pack. The battery pack can provide electrical energy to the power unit of the eVTOL, or it can also provide electrical energy to airborne systems such as an airborne environmental control system and an airborne lighting system. The battery pack includes a module shell having a battery cavity and a battery cell group installed in the battery cavity. The module shell has a first battery cavity hole and a second battery cavity hole connected to the battery cavity, wherein the first battery cavity hole is for heat exchange fluid to flow in, and the second battery cavity hole is for heat exchange fluid to flow out. And the first battery cavity hole and the second battery cavity hole are both arranged on the top wall or the upper part of the side wall of the module shell. In addition, the module shell is a shell structure with a sealing design, so that the battery cavity inside it can be used to fill the heat exchange fluid. When the battery cavity is filled with a heat exchange fluid, the heat exchange fluid can completely submerge the battery cell group, thereby contacting the battery cells of the battery cell group for heat exchange, so as to transfer the heat of the battery cells to the module shell, and heat exchange occurs with the external environment through the module shell, which is conducive to improving the heat dissipation efficiency of the battery cells. It is understandable that there are many structural forms of the battery cell, such as one or more of a soft-pack battery cell, a square battery cell and a cylindrical battery cell. In addition, the battery cavity can be a single battery cavity, or it can be a connected cavity formed by connecting multiple battery cavities through a pipeline.

[0069] In addition, the eVTOL also has a heat exchange fluid interface, which includes a machine-end medium inlet hole connected to the first battery cavity hole, and a machine-end medium outlet hole connected to the second battery cavity hole. Of course, the heat exchange fluid interface can be integrated into the charging socket on the eVTOL that cooperates with the charging gun, thereby avoiding a significant increase in the weight of the eVTOL and avoiding wasting the fuselage space of the eVTOL.

[0070] In one possible implementation, the battery cavity can also be used to fill with non-combustible gas. When the battery cavity is filled with non-combustible gas, the battery cell group is in contact with the non-combustible gas. In this way, the contact area between the battery cell and oxygen is reduced. When the battery pack has thermal runaway, the non-combustible gas can suppress the combustion of the battery pack. It is worth mentioning that due to the filling of non-combustible gas, the water vapor in the battery cavity is reduced, thus reducing the occurrence of condensed water in the battery cavity, thereby avoiding insulation failure of the battery pack.

[0071] In a possible implementation, a phase change material is also provided in the battery cavity, and in this case, the battery cell can directly exchange heat with the phase change material, which is beneficial to improving the heat dissipation efficiency of the battery cell. For example, a phase change module composed of a phase change material is provided between two adjacent battery cells, so that the heat between the two adjacent battery cells can be dissipated through the phase change module, avoiding heat accumulation between the two adjacent battery cells, which is beneficial to improving the heat dissipation efficiency of the battery pack.

[0072] It should be noted that the executor of this embodiment is the ground charging thermal management device, which can be a device configured in the airport to independently perform thermal management tasks. Alternatively, the ground charging thermal management device integrates charging and thermal management functions. Specifically, the ground charging thermal management device includes an external charging module and a thermal management module. The external charging module is constructed to be connected to the charging socket of the aircraft to deliver electrical energy to the battery pack, and the thermal management module is constructed to be connected to the heat exchange fluid interface of the aircraft to deliver heat exchange fluid to the battery pack. Of course, the executor of this embodiment can also be a user terminal configured by the airport support personnel, which is connected to the ground charging thermal management device in communication, thereby sending corresponding control instructions to the ground charging thermal management device. Alternatively, the executor of this embodiment can also be the airport's support monitoring platform, which is connected to the ground charging thermal management device in communication, thereby sending corresponding control instructions to the ground charging thermal management device.

[0073] Understandably, before each takeoff, airport operations will issue flight mission information related to the flight mission.

[0074] Among them, the flight mission information includes but is not limited to mission airspace information and flight profile information. Among them, the flight profile information includes multiple flight phase information, and each flight phase information at least includes flight duration and expected output power. Specifically, the information after the flight takes the take-off point as the origin and the landing destination as the end point, and is composed of several flight phases such as take-off, climb, cruise, mission execution, descent and landing. In each flight phase, the aircraft's flight speed, altitude, altitude pressure, expected output power, flight duration, distance from the take-off point and other parameter information are indicated. For example, for the take-off phase, the take-off duration needs to be marked. For example, for the landing phase, the landing duration needs to be marked. It is worth mentioning that the expected output power of each flight phase is related to the payload of the aircraft. For eVTOL, the payload is determined based on the total mass of passengers and cargo.

[0075] The mission airspace temperature information may be a collection of temperature information of each airspace that the aircraft passes through while flying along a predetermined flight path after takeoff and before landing. Of course, it is understandable that the temperature information is highly correlated with the aircraft's location.

[0076] After obtaining the flight mission information, the current operation scenario data of the aircraft performing the current flight mission can be constructed based on it.

[0077] Alternatively, in one embodiment, when the ground charging thermal management device executes step S10, it specifically includes: when the aircraft is connected to the ground charging thermal management device, obtaining the flight status information of the aircraft; when the flight status information is normal, obtaining the current operation scene data.

[0078] See also Figure 2Specifically, after the aircraft lands at the designated location, the ground charging thermal management device is connected to the designated interface of the aircraft through a dedicated connector, and the battery information, flight status information and flight process data are read through the communication cable in the designated interface of the aircraft. The flight status information includes but is not limited to the current battery voltage, current battery temperature, battery power SOC (State of Charge), battery voltage curve, power curve, temperature curve, fault information, etc. during flight.

[0079] The ground charging thermal management equipment uses flight status information and flight process data (battery-related data) to determine whether the battery pack is currently in a normal state, and whether the battery pack is in an abnormal state during the flight. If the battery pack is currently in an abnormal state, the fault information needs to be analyzed and maintenance needs to be performed for the fault. If abnormal fault information appears during the battery flight, the flight data needs to be analyzed and maintenance needs to be performed for the fault. If the fault level is high and the fault cannot be handled within the ground maintenance time, subsequent flights should be stopped and the battery pack should be fully maintained. If the fault level is low and it does not affect subsequent flight missions after inspection and maintenance, charging thermal management operations can be performed.

[0080] It is worth mentioning that although the battery system output power is high and the battery heats up during takeoff and landing, the battery system output power is low and the battery heats up less during level flight. However, when the aircraft performs different flight missions, the battery is in different operating scenarios, which will cause the battery to generate different heat, which will in turn affect the thermal management of subsequent aircraft trips. For example, during level flight, the battery pack may absorb more heat in a high temperature environment, causing the battery system temperature to rise beyond the optimal temperature range, which in turn causes the maximum temperature limit to be exceeded during high power output during landing. It is also possible that during level flight, the battery pack may exceed the optimal temperature range after the battery system temperature drops in a low temperature environment, thus failing to meet the high power output requirements during landing. In addition, even for the same mission, the battery output power is different due to different mission execution durations. For example, performing a certain flight mission for a long time will also cause heat accumulation in the battery and increase.

[0081] Therefore, after obtaining the current operating scenario data, especially the mission airspace temperature information and flight profile information of the mission environment during level flight, this embodiment can determine the corresponding target battery temperature based on this, and when charging the eVTOL through the battery charging thermal management system, the battery pack is thermally managed through the thermal management module, so that the temperature inside the battery pack reaches the target battery temperature during the charging process.

[0082] It should be noted that the temperature inside the battery pack reaches the target battery temperature when the temperature inside the battery pack is equal to the target battery temperature or when the difference between the temperature inside the battery pack and the target battery temperature is within an allowable error range. In addition, the allowable error range can be determined according to the current operating scenario data.

[0083] It is not difficult to see that compared with merely considering monitoring the battery temperature during charging and controlling it within an appropriate temperature range, this embodiment determines the corresponding target battery temperature for different thermal management scenarios, especially for different mission airspace temperature information and flight profile information, thereby making the corresponding thermal management task during battery charging more adaptable.

[0084] In addition, when the temperature inside the battery pack is high, the phase change material in the battery cavity will absorb a certain amount of heat to maintain the temperature inside the battery pack within a suitable temperature range. When the temperature inside the battery pack is low, the phase change material can play a latent heat role and release heat to keep the temperature of the battery pack within a suitable temperature range. However, the heat storage capacity of the phase change material in the battery pack is not constant, but will change with the design parameters of the phase change material. For example, different types of phase change materials have different heat storage capacities, or the same type of phase change material has different quality, resulting in different heat storage capacities of the phase change materials in the battery pack. Therefore, in one embodiment, the current operating scenario data also includes material parameters of the phase change material.

[0085] It is not difficult to see that compared with the traditional battery thermal management strategy that only uses the battery temperature as an indicator parameter, this embodiment introduces phase change material parameters, so that when the battery pack is thermally managed, the final temperature of the battery pack is the temperature reached by both the phase change material and the battery cell. In this way, the phase change material in the battery pack can be determined according to the mission airspace and flight mission to determine whether the phase change material needs to store heat in advance on the ground and then reach the target airspace to release latent heat to keep the battery warm, or after cooling on the ground, the phase change material absorbs the heat emitted by the battery cell in the target airspace and uses the latent heat to cool the battery.

[0086] Moreover, the introduction of the material parameters of the phase change material enables the target battery temperature finally determined to enable the phase change material in the battery pack to exert better temperature control capabilities, so as to avoid the situation where the temperature in the battery pack is too high, resulting in the failure of the phase change material to maintain the temperature in the battery pack within the appropriate temperature range after completely absorbing the heat, and to avoid the situation where the temperature in the battery pack is too low, resulting in the failure of the phase change material to maintain the temperature in the battery pack within the appropriate temperature range after completely releasing the heat. In addition, the introduction of the material parameters of the phase change material into the current operating scenario data can make the thermal management of the phase change material during charging not limited to the change of phase state, but to accurately adjust the temperature of the battery cell and the phase change material during charging, so that the heat stored in the phase change material or the ability to absorb heat during takeoff can meet the mission requirements, thereby improving the accuracy of thermal management.

[0087] Specifically, the material parameters include at least one of the phase change temperature, material mass, three-dimensional thermal conductivity and phase change latent heat value. Among them, the phase change temperature is the property of the phase change material itself, which is the critical temperature at which the phase change material changes from one phase to another. The material mass is the total mass of the phase change material inside a battery pack, or the mass of each independent phase change module between two battery cells, or the material mass can also be the collection of the masses of all phase change modules. The three-dimensional thermal conductivity is the thermal conductivity of the battery pack with phase change modules as a whole in all directions. The latent heat value of phase change is the property of the phase change material itself, which is used to quantify the heat absorbed or released when the phase change material changes from one phase to another at a certain temperature.

[0088] In addition, the ground charging thermal management equipment obtains information such as battery cell type, thermal model parameters, system composition, thermal management mode (liquid cooling or air cooling), cooling medium type (immersion liquid type or gas type), box pressure, battery temperature, etc. by reading battery information. This can avoid confusion in thermal management methods for battery packs of different types and specifications, and avoid the mixed application of different heat exchange fluids.

[0089] In addition, as mentioned above, the battery system output power is high during takeoff and landing, and the battery generates a lot of heat. Therefore, in addition to the level flight stage, the takeoff and landing stages also need to be included in the scope of thermal management considerations. Therefore, in one embodiment, the flight mission information also includes the takeoff ambient temperature information of the takeoff site. The takeoff ambient temperature information can be the ground temperature information of the airport.

[0090] Alternatively, in another embodiment, the flight mission information further includes landing environment temperature information of the landing destination, wherein the landing environment temperature information may be ground temperature information of the landing destination.

[0091] Of course, in another embodiment, the flight mission information also includes takeoff environment temperature information of the takeoff environment and landing environment temperature information of the landing destination.

[0092] It is not difficult to see that in this embodiment, the ambient temperature of the level flight stage, as well as the ambient temperature of the take-off and landing stages, is comprehensively considered to ensure the temperature uniformity of the battery pack of the aircraft during flight, thereby improving the thermal management effect. In addition, this embodiment also takes into account the impact of the length of the level flight stage, as well as the length of the take-off and landing stages on the heating of the battery, thereby further ensuring the temperature uniformity of the battery pack of the aircraft during flight, thereby improving the thermal management effect.

[0093] In addition, when the battery is charging, the battery itself will also generate heat. In order to ensure that the battery pack is within a suitable temperature range, while maximizing the system charging rate and reducing the ground charging time, in one embodiment, the current operation scenario data also includes charging task information.

[0094] That is, in this embodiment, thermal management parameters such as target battery temperature are also adjusted according to charging conditions. Specifically, the charging task information includes at least one of the maximum charging time, the battery system state before charging, the target battery system state, and the maximum charging power that the ground equipment can provide.

[0095] The maximum charging time is less than or equal to the ground preparation phase time configured by the aircraft operator. In addition, the maximum charging time is also determined by the maximum charging power that the ground equipment can provide.

[0096] In addition, the ground charging thermal management equipment can check the subsequent flight missions, destinations, maximum charging power that ground equipment can provide, mission airspace temperature information, and flight profile information of the current aircraft from the airport operation server based on the aircraft information read. Then, the ground charging thermal management equipment generates the target battery temperature, target battery system status, and ground preparation phase duration based on the above data information. The generated ground preparation phase duration is used to guide the ground operation service time nodes, including but not limited to the ground maintenance operation process and the time of each stage, the passenger disembarkation and boarding process time, the cabin thermal management and device preparation time, and the takeoff and landing guidance and airspace guidance of multiple aircraft.

[0097] The system status before charging includes but is not limited to the state of charge of the battery pack. For example, during the ground maintenance phase, the ground charging thermal management device is connected to the designated interface of the aircraft through a dedicated connector, and the flight status information is transmitted to the ground charging thermal management device through the communication cable in the designated interface. The battery charge SOC in the flight status information is the battery system status before charging.

[0098] The target system state is obtained by the aircraft operator according to the flight mission configuration. For example, a mission requires that the battery pack of the aircraft needs to be charged to 100% SOC.

[0099] It is understandable that the temperature of the battery pack is specifically adjusted by the heat exchange fluid introduced. The aircraft also has requirements for the duration of the ground maintenance phase. Therefore, in one embodiment, when the ground charging thermal management device executes step S20, specifically:

[0100] The target battery temperature and target heat exchange fluid parameters corresponding to the current operating scenario data are matched.

[0101] Among them, the aircraft includes a heat exchange fluid interface connected to the battery cavity, and the ground charging thermal management equipment is constructed to provide heat exchange fluid to the aircraft when connected to the heat exchange fluid interface, so that the heat exchange fluid is filled into the battery cavity to exchange heat with the phase change material and / or battery cell.

[0102] Accordingly, when the ground charging thermal management device executes step S30, specifically: based on the target heat exchange fluid parameters, the heat exchange fluid is provided to the aircraft so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process.

[0103] Specifically, the target heat exchange fluid parameters of this embodiment include at least one of the heat exchange fluid type, heat exchange fluid inlet temperature, heat exchange fluid flow rate, heat exchange fluid passage time, and heat exchange fluid liquid direction switching strategy.

[0104] The heat exchange fluid type is the type of heat exchange fluid, including but not limited to deionized water, electronic fluoride liquid, hydrocarbons, esters or silicone oils. Since different types of heat exchange fluids have different heat exchange efficiencies and / or preparation efficiencies, in order to complete charging within the required ground maintenance phase duration, it is necessary to select a suitable heat exchange fluid.

[0105] The heat exchange fluid inlet temperature is the temperature of the heat exchange fluid output by the thermal management module. It is understandable that the same type of heat exchange fluid has different temperatures during heat exchange, which will also significantly affect the heat exchange time for the battery pack to reach the target battery temperature and the temperature that the battery finally reaches.

[0106] The duration of the heat exchange fluid introduction is determined according to the duration of the ground maintenance phase, that is, before the duration of the ground maintenance phase is reached, the ground charging thermal management equipment needs to be separated from the aircraft.

[0107] The heat exchange fluid liquid direction switching strategy includes but is not limited to the flow direction switching time interval and the flow direction switching frequency. It is understandable that after the heat exchange fluid enters the battery cavity through the first battery cavity hole or the second battery cavity hole, the heat exchange fluid exchanges heat with the battery cell and / or phase change material to change the temperature. If the flow direction is not changed, the thermal management effect of the part that contacts the heat exchange fluid first is always better, while the thermal management effect of the part that contacts the heat exchange fluid later is insufficient. Therefore, by adjusting the flow direction of the heat exchange fluid, the battery as a whole can be evenly heated or cooled to the target battery temperature.

[0108] In addition, it is worth mentioning that Figure 2 Before charging the battery, it can be determined whether the battery temperature meets the charging conditions. If the battery temperature does not meet the charging conditions, the parameters of the heat exchange fluid are designed to meet the charging conditions, and the heat exchange fluid is provided first to make the battery temperature meet the charging conditions. After monitoring that the battery temperature meets the charging conditions, charging is performed until the battery pack reaches the target battery temperature and the battery pack reaches the set power.

[0109] It is not difficult to see that compared with the traditional battery thermal management strategy that only uses battery temperature as an indicator parameter, this embodiment introduces battery charging conditions as a reference indicator, combines the charging strategy with the thermal management strategy, and adjusts the thermal management parameters according to the charging conditions to ensure that the battery is within the target temperature range while maximizing the system charging rate and reducing the ground charging time.

[0110] In addition, when the ground charging thermal management device executes step S20, it can specifically query the preset thermal management strategy table to match and obtain the target charging thermal management parameters corresponding to the current operating scenario data.

[0111] Among them, the preset thermal management strategy table includes a mapping relationship between operating scenario data and charging thermal management parameters; the charging thermal management parameters include battery temperature and heat exchange fluid parameters.

[0112] It can be understood that the ground charging thermal management device internally maintains a preset thermal management strategy table, which stores the mapping relationship between the operating scenario data and the charging thermal management parameters, so that the ground charging thermal management device can quickly query and obtain the corresponding target thermal management parameters.

[0113] Alternatively, when the ground charging thermal management device executes step S20, specifically: inputting the current operating scenario data into the thermal management model to obtain the target charging thermal management parameters output by the thermal management model.

[0114] The thermal management model is trained using thermal management training samples. The features of the thermal management training samples include operating scenario data. The labels of the thermal management training samples are corresponding charging thermal management parameters.

[0115] It is understandable that in this implementation, the operation scenario data can be used as the input data of the model, and the corresponding charging thermal management parameters can be used as the output data of the model to train an AI (Artificial Intelligence) model, so that the AI ​​model can learn the corresponding relationship between the operation scenario data and the charging thermal management parameters. It is understandable that the specific AI model can be a Transformer model, a deep reinforcement learning model, a generative adversarial network (GAN), a self-supervised learning model, etc., and this embodiment does not limit this.

[0116] In addition, because different structural specifications of batteries have different parameters such as battery temperature, DC internal resistance, AC internal resistance, voltage, current, etc. corresponding to different SOC under different ambient temperatures and different charging rates, the thermal characteristics of batteries with different structural specifications are different. The thermal characteristics of batteries will affect the specific heat capacity and thermal conductivity of batteries, resulting in the corresponding relationship between battery packs with different structural specifications and their own operating scenario data and charging thermal management parameters.

[0117] Therefore, when the ground charging thermal management device executes step S20, it can specifically: determine the corresponding preset thermal management strategy table based on the characteristic parameters of the battery pack; query the preset thermal management strategy table, and match the target charging thermal management parameters corresponding to the current operating scenario data.

[0118] Alternatively, when the ground charging thermal management device executes step S20, it may specifically: determine the corresponding thermal management model based on the characteristic parameters of the battery pack; input the current operating scenario data into the thermal management model to obtain the target charging thermal management parameters output by the thermal management model.

[0119] Among them, the characteristic parameters of the battery pack can be the model of the battery pack, and can also include but are not limited to specific parameters such as battery temperature, DC internal resistance, AC internal resistance, voltage, current, etc. corresponding to different SOCs under different ambient temperatures, different charging rates, etc.

[0120] In this way, the database of the ground charging thermal management equipment or the cloud can pre-store the characteristic parameters of the battery packs of all aircraft in operation at the airport, as well as the thermal management models or preset thermal management strategy tables corresponding to different battery packs. Then, during a single thermal management task, the ground charging thermal management equipment uses the characteristic parameters of the battery pack as input data to match the corresponding thermal management model or preset thermal management strategy table.

[0121] It is not difficult to see that in this embodiment, corresponding thermal management models or preset thermal management strategy tables are pre-built for battery packs with different characteristic parameters, thereby further improving the thermal management accuracy.

[0122] The preset thermal management strategy table or thermal management model can be obtained in the following ways:

[0123] (1) Obtain the thermal model of the aircraft’s battery pack and multiple sets of flight data;

[0124] (2) Perform simulations and / or experiments based on the thermal model and flight data to generate a preset thermal management strategy table or thermal management training samples.

[0125] Specifically, the aircraft support personnel or battery pack designers can determine the battery temperature curve, DC internal resistance curve, AC internal resistance curve, voltage curve, current curve and other parameter curves corresponding to different SOCs under different ambient temperatures and different charge and discharge rates. Then measure the thermal characteristic parameters of the battery pack under different ambient temperature conditions, and establish a thermal model of the battery pack based on the various curves and thermal characteristic parameters obtained above. Among them, the thermal characteristic parameters include but are not limited to specific heat capacity and three-dimensional thermal conductivity.

[0126] After obtaining the thermal model and verifying its reliability, the thermal management module can be used to predict the heat exchange of the battery pack during the thermal management time based on the operating conditions of the thermal model in different flight scenarios reflected by multiple sets of flight data. Then the thermal management parameters when the thermal management module controls the battery to reach this temperature are determined. That is, the corresponding thermal management parameters are designed in combination with the ambient temperature conditions, thermal management conditions, and the operating conditions of the battery itself in the flight data.

[0127] Then, a thermal management simulation model can be established for simulation, and simulation result data can be obtained. After the design requirements are met, experiments can be conducted using physical batteries or physical batteries with reduced scale. Finally, a preset thermal management strategy table is obtained by fitting the simulation result data and the experimental result data. Of course, thermal management training samples required for training AI models can also be generated based on the simulation result data and the experimental result data, and then a thermal management model can be obtained by training based on this.

[0128] In addition, after the ground charging thermal management equipment is connected to the aircraft, it can query historical maintenance information from the server based on the read battery information, including but not limited to historical flight records, battery life curves, historical thermal management curves, etc., so that the target charging thermal management parameters can be appropriately adjusted based on the historical maintenance information.

[0129] Exemplarily, in order to help understand the implementation process of the battery charging thermal management method obtained by combining this embodiment with the above-mentioned embodiment 1, two examples are shown below:

[0130] Example 1:

[0131] The operating scenario data is: the ground ambient temperature is -20℃, and the battery system needs to be heated before the first takeoff in the morning after the aircraft has been parked for one night. The ground preparation phase is set to 1 hour, at which time the battery system is in a 50% SOC state. Charging can begin after the minimum temperature of the battery system reaches 0℃. Subsequent flight conditions require that the battery system be charged to 100% SOC before takeoff. During the flight, the takeoff phase lasts about 3 minutes at an ambient temperature of -20℃ at the takeoff site, and the subsequent flight area has an air temperature of -30℃ to -20℃, with a flight time of about 30 minutes. The landing ambient temperature is 0℃, and the landing time is about 2 minutes. The battery cell is a soft-pack cell, using a phase change material with a phase change temperature of 35℃ (or any model between 25℃ and 45℃), and a phase change latent heat of 120J / kg.

[0132] Consult the preset thermal management strategy table to determine the recommended thermal management parameters:

[0133] When heated to takeoff, the target temperature is 35°C, and the temperature difference is less than 5°C. The default fluorinated liquid inlet temperature curve, inlet flow curve, and default heat exchange fluid liquid direction switching strategy are recommended.

[0134] After the battery system heats up during takeoff, it uses the latent heat of the phase change material to dissipate heat when flying for 30 minutes in a -20°C environment to offset or reduce the impact of the ambient temperature on the battery system, keeping the battery temperature between 25°C and 45°C during the full-profile flight.

[0135] Example 2:

[0136] The operating scenario data is: the ground ambient temperature is 40℃, and the battery system needs to be cooled down before the next takeoff after the aircraft stops. The ground preparation phase is set to 30 minutes, at which time the battery system is in 50% SOC state. Charging can begin after the maximum temperature of the battery system reaches 35℃. Subsequent flight conditions require that the battery system be charged to 100% SOC before takeoff. During the flight, the takeoff phase lasts about 3 minutes when the ambient temperature at the takeoff site is 40℃. The air temperature in the subsequent flight area is about 40℃ to 50℃, and the flight time is about 20 minutes. The ambient temperature at the landing site is 50℃, and the landing time is about 2 minutes.

[0137] The battery cell is a soft-pack cell, using phase change material with a phase change temperature of 40°C (can also be any model between 25°C and 45°C), and a phase change latent heat of 120J / kg.

[0138] Consult the preset thermal management strategy table to determine the recommended thermal management parameters:

[0139] When cooling to takeoff, the target temperature is 25°C, and the temperature difference is less than 5°C. The default fluorinated liquid inlet temperature curve, inlet flow curve and default heat exchange fluid liquid direction switching strategy are recommended.

[0140] After ground charging and thermal management are completed, the aircraft will proceed to the next stage of operation. After the battery system has heated up during takeoff, it absorbs the external environment heat through the latent heat of the phase change material when flying for 20 minutes at 50°C to offset or reduce the impact on the battery system, keeping the battery temperature between 25°C and 45°C during the full-profile flight.

[0141] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the battery charging thermal management method of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0142] This application also provides a battery charging thermal management device, please refer to Figure 3 , the battery charging thermal management device includes:

[0143] An information acquisition module is used to acquire the current operation scene data of the aircraft; the current operation scene data includes the mission airspace temperature information and flight profile information of the aircraft;

[0144] A temperature determination module is used to match and obtain a target battery temperature corresponding to the current operating scenario data;

[0145] The thermal management module is used to perform thermal management on the battery pack of the aircraft during the charging process so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process.

[0146] The battery charging thermal management device provided by the present application adopts the battery charging thermal management method in the above embodiment, which can solve the technical problem that only considering the temperature during charging will lead to the need to improve the adaptability of battery thermal management to the task. Compared with the prior art, the beneficial effects of the battery charging thermal management device provided by the present application are the same as the beneficial effects of the battery charging thermal management method provided by the above embodiment, and other technical features in the battery charging thermal management device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0147] The present application provides a ground charging thermal management device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the battery charging thermal management method in the above-mentioned embodiment one.

[0148] Reference below Figure 4, which shows a schematic diagram of the structure of a ground charging thermal management device suitable for implementing the embodiment of the present application. The ground charging thermal management device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 4 The ground charging thermal management device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0149] like Figure 4 As shown, the ground charging thermal management device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM: Read Only Memory) 1002 or the program loaded from the storage device 1003 to the random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the ground charging thermal management device are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. The input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the ground charging thermal management device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a ground charging thermal management device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have alternatively.

[0150] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0151] The ground charging thermal management device provided by the present application adopts the battery charging thermal management method in the above embodiment, which can solve the technical problem that only considering the temperature during charging will lead to the need to improve the adaptability of battery thermal management and tasks. Compared with the prior art, the beneficial effects of the ground charging thermal management device provided by the present application are the same as the beneficial effects of the battery charging thermal management method provided by the above embodiment, and the other technical features of the ground charging thermal management device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0152] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0153] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0154] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the battery charging thermal management method in the above-mentioned embodiment.

[0155] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM: Random Access Memory), a read-only memory (ROM: Read Only Memory), an erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency: Radio Frequency), etc., or any suitable combination of the above.

[0156] The above-mentioned computer-readable storage medium may be included in the ground charging thermal management device; or it may exist independently without being assembled into the ground charging thermal management device.

[0157] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the ground charging thermal management device, the ground charging thermal management device: obtains the current operating scenario data of the aircraft; the current operating scenario data includes the mission airspace temperature information and flight profile information of the aircraft; matches and obtains the target battery temperature corresponding to the current operating scenario data; and performs thermal management on the battery pack of the aircraft during the charging process so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process.

[0158] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0159] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0160] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0161] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned battery charging thermal management method, and can solve the technical problem that only considering the temperature during charging will lead to the adaptability of battery thermal management to the task. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the battery charging thermal management method provided by the above-mentioned embodiment, and will not be repeated here.

[0162] The present application also provides a computer program product, including a computer program, which implements the steps of the battery charging thermal management method as described above when the computer program is executed by a processor.

[0163] The computer program product provided by the present application can solve the technical problem that only considering the temperature during charging during charging will lead to the need to improve the battery thermal management and task adaptability. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the battery charging thermal management method provided by the above embodiment, which will not be repeated here.

[0164] The above are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical 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. A battery charging thermal management method, characterized in that: The battery charging thermal management method comprises: Acquire current operation scenario data of the aircraft; the current operation scenario data includes mission airspace temperature information and flight profile information of the aircraft; Matching and obtaining a target battery temperature corresponding to the current operating scenario data; During the charging process, thermal management is performed on the battery pack of the aircraft so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature; wherein the phase change material in the battery pack stores heat in advance on the ground so as to release heat to keep the battery cell warm, or cools in advance on the ground so as to absorb heat emitted by the battery cell to cool the battery cell; The current operating scenario data also includes material parameters of the phase change material; wherein, a cell cavity is defined in the battery pack, and a phase change module is provided between adjacent cells in the cell cavity, and the phase change module includes the phase change material; the phase change material exchanges heat with the cell; the aircraft includes a heat exchange fluid interface connected to the battery cavity, and the ground charging thermal management equipment is configured to provide a heat exchange fluid to the aircraft when connected to the heat exchange fluid interface, so that the heat exchange fluid is filled into the battery cavity to exchange heat with the phase change material and the cell, and the target battery temperature is the temperature reached by the phase change material and the battery cell together; the material parameters include a latent heat value of phase change.

2. The battery charging thermal management method according to claim 1, characterized in that: The flight profile information includes a plurality of flight phase information, and each of the flight phase information includes at least a flight duration and an expected output power.

3. The battery charging thermal management method according to claim 1, characterized in that: The material parameters further include at least one of phase change temperature, material mass, and three-dimensional thermal conductivity.

4. The battery charging thermal management method according to claim 3, characterized in that: The current operation scenario data also includes at least one of takeoff ambient temperature information of a takeoff location, landing ambient temperature information of a landing destination, and charging task information.

5. The battery charging thermal management method according to claim 4, characterized in that: The charging task information includes at least one of a maximum charging time, a battery system state before charging, a target battery system state, and a maximum charging power that can be provided by the ground equipment.

6. The battery charging thermal management method according to any one of claims 1 to 5, characterized in that: Matching and obtaining a target battery temperature corresponding to the current operating scenario data includes: Matching and obtaining a target battery temperature and a target heat exchange fluid parameter corresponding to the current operating scenario data; Thermally managing the battery pack of the aircraft during the charging process so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process includes: Based on the target heat exchange fluid parameter, the heat exchange fluid is provided to the aircraft so that during the charging process, the battery temperature of the battery pack reaches and is maintained at the target battery temperature.

7. The battery charging thermal management method according to claim 6, characterized in that: The target heat exchange fluid parameters include at least one of the heat exchange fluid type, heat exchange fluid inlet temperature, heat exchange fluid flow rate, heat exchange fluid introduction time, and heat exchange fluid liquid direction switching strategy.

8. The battery charging thermal management method according to claim 6, characterized in that: The matching to obtain a target battery temperature and a target heat exchange fluid parameter corresponding to the current operating scenario data includes: Querying a preset thermal management strategy table to match and obtain target charging thermal management parameters corresponding to the current operating scenario data; the preset thermal management strategy table includes a mapping relationship between the operating scenario data and the charging thermal management parameters, and the charging thermal management parameters include battery temperature and heat exchange fluid parameters; or The current operating scenario data is input into a thermal management model to obtain the target charging thermal management parameters output by the thermal management model; wherein the thermal management model is trained using thermal management training samples, the features of the thermal management training samples include the operating scenario data, and the labels of the thermal management training samples are the corresponding charging thermal management parameters.

9. The battery charging thermal management method according to claim 8, characterized in that: The querying of the preset thermal management strategy table to match and obtain the target charging thermal management parameters corresponding to the current operating scenario data includes: Based on the characteristic parameters of the battery pack, determining the corresponding preset thermal management strategy table; Query the preset thermal management strategy table to match and obtain the target charging thermal management parameters corresponding to the current operating scenario data; or The step of inputting the current operation scenario data into a thermal management model to obtain the target charging thermal management parameter output by the thermal management model includes: Determining the corresponding thermal management model based on the characteristic parameters of the battery pack; The current operating scenario data is input into the thermal management model to obtain the target charging thermal management parameters output by the thermal management model.

10. The battery charging thermal management method according to claim 8, characterized in that: Before matching to obtain the target charging thermal management parameter corresponding to the current operating scenario data, the method further includes: Obtaining a thermal model of a battery pack of the aircraft and multiple sets of flight data; Simulation and / or experiment are performed based on the thermal model and the flight data to generate the preset thermal management strategy table or the thermal management training sample.

11. The battery charging thermal management method according to claim 6, characterized in that: The obtaining of the current operation scene data of the aircraft includes: When the aircraft is connected to a ground charging thermal management device, obtaining flight status information of the aircraft; When the flight status information is normal, the current operation scenario data is obtained.

12. A battery charging thermal management device, characterized in that: The battery charging thermal management device comprises: An information acquisition module, used to acquire current operation scene data of the aircraft; the current operation scene data includes mission airspace temperature information and flight profile information of the aircraft; A temperature determination module, used to match and obtain a target battery temperature corresponding to the current operating scenario data; A thermal management module, used for thermally managing the battery pack of the aircraft during charging, so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during charging; wherein the phase change material in the battery pack stores heat in advance on the ground so as to release heat to keep the battery cell warm, or cools in advance on the ground so as to absorb heat emitted by the battery cell to cool the battery cell; Among them, the current operating scenario data also includes material parameters of the phase change material; wherein a cell cavity is defined in the battery pack, and a phase change module is provided between adjacent cells in the cell cavity, and the phase change module includes the phase change material; the phase change material exchanges heat with the cell; the aircraft includes a heat exchange fluid interface connected to the battery cavity, and the ground charging thermal management equipment is configured to provide a heat exchange fluid to the aircraft when connected to the heat exchange fluid interface, so that the heat exchange fluid is filled into the battery cavity and exchanges heat with the phase change material and the cell, and the target battery temperature is the temperature reached by the phase change material and the battery cell together; the material parameters include a latent heat value of phase change.

13. A ground charging thermal management device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the battery charging thermal management method according to any one of claims 1 to 11.

14. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the battery charging thermal management method according to any one of claims 1 to 11 are implemented.

15. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the battery charging thermal management method according to any one of claims 1 to 11 are implemented.

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