Thermal management system of eVTOL battery and aircraft

Abstract

The utility model discloses a thermal management system of an eVTOL battery and an aircraft, and relates to the technical field of aircrafts, the thermal management system comprises at least one battery loop, a cooling loop, a heating loop and an adjusting piece, the battery loop comprises at least two battery packs arranged on an aircraft body, the at least two battery packs are connected in parallel through a cooling liquid pipeline, and the cooling liquid pipeline is used for circulating cooling liquid; the cooling loop is arranged on the machine body or the ground, can be connected with the battery loop in series through a cooling liquid pipeline and is used for cooling the battery pack, and the heating loop is arranged on the machine body or the ground, can be connected with the battery loop in series through a cooling liquid pipeline and is used for preserving heat or heating the battery pack; the adjusting part can control the connection and disconnection between the cooling loop and the battery loop and between the heating loop and the battery loop, so that cooling, heat preservation or heating of the battery pack is achieved, effective heat management of the battery pack can be achieved, and the use safety of the aircraft is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aircraft technology, in particular to a kind of thermal management system of eVTOL battery and aircraft. BACKGROUND

[0002] eVTOL (Electric Vertical Take-off and Landing, electric vertical take-off and landing aircraft) is a kind of air traffic equipment capable of being driven by electricity, vertically taking off and landing like helicopter, and can take off and land in limited urban space without the aid of runway, has great advantage in point-to-point short-distance transportation (such as low-altitude sightseeing, city travel, etc.), especially in disaster or emergency, can efficiently and quickly reach the area that traditional transport tools are difficult to reach.

[0003] Because battery discharge generates heat during the flight of aircraft, if the temperature of battery is too high and lasts for a long time, it will affect the service life of battery, and will affect the discharge efficiency of battery, and in serious case, thermal runaway problem will occur, affect the use safety of aircraft, have certain security risks. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of thermal management system of eVTOL battery and aircraft, can effectively carry out thermal management to battery pack in body, and then be favorable to guarantee the use safety of aircraft.

[0005] The utility model provides a kind of thermal management system of eVTOL battery, comprising:

[0006] At least one battery loop, including at least two battery packs arranged on the body, at least two battery packs are connected in parallel by cooling liquid pipeline, cooling liquid pipeline is used to flow cooling liquid,

[0007] Cooling circuit is arranged in the body or ground, can be connected in series with battery loop through cooling liquid pipeline, is used to cool battery pack,

[0008] Heating circuit is arranged in the body or ground, can be connected in series with battery loop through cooling liquid pipeline, is used to keep warm or heat battery pack,

[0009] And adjusting piece, the on-off between cooling circuit and heating circuit and battery loop can be controlled, to realize the cooling, keep warm or heat of battery pack.

[0010] In an embodiment, the cooling circuit comprises a refrigeration device, a heat exchange device and a power pump, the heat exchange device and the power pump are connected in series through the cooling liquid pipeline, when the temperature of the battery pack is greater than or equal to a first set temperature T1, the refrigeration device cooperates with the heat exchange device to cool the cooling liquid in the cooling liquid pipeline.

[0011] In an embodiment, the heating circuit comprises a power pump and a heating device connected in series through the cooling liquid pipeline, when the temperature of the battery pack is less than or equal to a second set temperature T2, the heating device heats the cooling liquid in the cooling liquid pipeline.

[0012] In an embodiment, at least two power pumps are connected to the inlet side or the outlet side of the battery circuit, and the at least two power pumps are connected in parallel.

[0013] In an embodiment, when the number of the battery circuits is at least two, the at least two battery circuits are connected in parallel, one power pump is connected to the inlet side or the outlet side of each battery circuit, and the battery circuits are connected through a connecting pipeline for the circulation of cooling liquid, and the connecting pipeline is connected to the outlet side of the power pump.

[0014] In an embodiment, when the cooling circuit and the heating circuit are arranged on the ground, the cooling liquid in the cooling liquid pipeline of the battery circuit does not circulate, or the battery circuit comprises at least one power pump connected in series with the battery circuit, and when the number of the power pumps is at least two, the at least two power pumps are connected in parallel.

[0015] In an embodiment, the at least two battery packs are symmetrically arranged on the left and right sides of the machine body.

[0016] In an embodiment, when the number of the battery circuits is at least two, the number of the battery packs connected in parallel in the battery circuits is the same.

[0017] In an embodiment, the battery circuit further comprises a valve connected in series with the battery pack, each valve is connected in series with the battery pack, and the valve is used for controlling the on-off of the cooling liquid of the battery pack connected in series with the valve.

[0018] The utility model further provides an aircraft, including machine body, machine body is provided with above -mentioned eVTOL battery's heat management system.

[0019] The eVTOL battery's heat management system and the aircraft have the following advantages:

[0020] The cooling circuit is arranged on the machine body, and the cooling circuit has instantaneity of the battery pack cooling function, so that the cooling function can be realized when the machine body is in a flight state or located on the ground, thereby avoiding that the working temperature of the battery pack is too high, and the cruising range of the machine body is increased.

[0021] The heating circuit is arranged on the machine body, and the heating circuit has instantaneity of the battery pack heating function, so that the heating function can be realized when the machine body is in a flight state or located on the ground, thereby making the battery pack be in a better charging and discharging state, the service life of the battery pack is prolonged, and the cruising range of the machine body is increased.

[0022] The adjusting member is arranged, so that the battery circuit can be connected in series with the cooling circuit to cool the battery pack required in the battery circuit through the cooling circuit, and the battery circuit can be connected in series with the heating circuit to heat the battery pack required in the battery circuit through the heating circuit, thereby realizing thermal management of the battery pack, and the charging and discharging efficiency of the battery pack is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 It is a structural schematic view of the machine body of an embodiment of the present application.

[0025] Figure 2 It is a schematic view of the thermal management system of an embodiment of the present application.

[0026] Figure 3 It is a schematic view of the communication between the battery circuit and the cooling circuit of an embodiment of the present application.

[0027] Figure 4 A schematic view of a battery circuit and a heating circuit in communication according to an embodiment of the present application;

[0028] Figure 5 Another schematic view of a battery circuit and a heating circuit in communication according to an embodiment of the present application;

[0029] Figure 6 A schematic view of a thermal management system according to another embodiment of the present application;

[0030] Figure 7 A schematic view of a thermal management system according to still another embodiment of the present application;

[0031] Figure 8 A schematic view of a thermal management system according to yet another embodiment of the present application;

[0032] Figure 9 A schematic view of a thermal management system according to an embodiment of the present application.

[0033] In the drawings:

[0034] 10 - machine body; 101 - battery circuit; 102 - connecting pipeline; 11 - battery pack; 12 - adjusting member; 13 - refrigeration member; 14 - heat exchange member; 15 - power pump; 16 - heating member; 17 - valve member; 18 - one-way stop valve; 19 - liquid storage pot; 20 - integrated system; 21 - temperature measuring member; 22 - measuring module; 23 - control module. DETAILED DESCRIPTION

[0035] The specific embodiments of the present application will be described in detail hereinafter with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the description of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0036] Unless otherwise clearly defined and limited, the terms "arranged", "mounted", "connected" and the like should be interpreted broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0037] The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, and are only for the convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0038] The terms "first", "second", "third" and the like are only for distinguishing similar attributes, and do not indicate or imply relative importance or a particular order.

[0039] The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.

[0040] As Figure 1 shown, the thermal management system of the eVTOL battery provided by the utility model is used for thermal management of at least two battery packs 11 arranged on the machine body 10, so as to control the temperature of the battery pack 11, and the at least two battery packs 11 are used to provide power for the machine body 10.

[0041] Referring to Figure 1 and Figure 2 , the thermal management system of the eVTOL battery provided by the utility model comprises:

[0042] At least one battery circuit 101 comprises at least two battery packs 11 arranged on the machine body 10, and the at least two battery packs 11 are connected in parallel through a cooling liquid pipeline, and the cooling liquid pipeline is used to circulate cooling liquid,

[0043] A cooling circuit is arranged on the machine body 10 or the ground, can be connected in series with the battery circuit 101 through the cooling liquid pipeline, and is used to cool the battery pack 11,

[0044] A heating circuit is arranged on the machine body 10 or the ground, can be connected in series with the battery circuit 101 through the cooling liquid pipeline, and is used to heat or heat the battery pack 11,

[0045] An adjusting part 12 can control the on-off between the cooling circuit and the heating circuit and the battery circuit 101, so as to realize cooling, heat preservation or heating of the battery pack 11.

[0046] The cooling circuit is arranged to cool the battery pack 11, so that the temperature of the battery pack 11 does not become too high to affect the charging and discharging efficiency, and the problem of thermal runaway of the battery pack 11 can be effectively avoided, and the use safety of the battery pack 11 is ensured. When the cooling circuit is arranged on the machine body 10, the cooling function of the battery pack 11 is instant, and the cooling function can be realized when the machine body 10 is in flight or on the ground, thereby avoiding the working temperature of the battery pack 11 being too high, which is beneficial to increase the endurance mileage of the machine body 10. When the cooling circuit is arranged on the ground, the cooling function can be realized when the machine body 10 is on the ground, which is beneficial to reduce the weight of the machine body 10, especially for short-distance transportation, and the investment cost of the machine body 10 is reduced.

[0047] The heating circuit is arranged to heat or heat the battery pack 11, so that the temperature of the battery pack 11 does not become too low to affect the charging and discharging efficiency. When the heating circuit is arranged on the machine body 10, the heating function of the battery pack 11 is instant, and the heating or heating function can be realized when the machine body 10 is in flight or on the ground, thereby enabling the battery pack 11 to be in a better charging and discharging state, which is beneficial to prolong the service life of the battery pack 11 and increase the endurance mileage of the machine body 10. When the heating circuit is arranged on the ground, the weight of the machine body 10 can be reduced, especially for short-distance transportation, and the investment cost of the machine body 10 is reduced.

[0048] The adjustment member 12 is arranged to enable the battery circuit 101 to be connected in series with the cooling circuit, so that the battery pack 11 required in the battery circuit 101 can be cooled by the cooling circuit, and the battery circuit 101 can be connected in series with the heating circuit, so that the battery pack 11 required in the battery circuit 101 can be heated by the heating circuit, thereby realizing the thermal management of the battery pack 11, which is beneficial to ensure that the battery pack 11 has better charging and discharging efficiency, ensures that the battery pack 11 is in a safe working environment, and improves the use safety of the aircraft.

[0049] In an embodiment, as shown in Figure 1 The number of at least two battery packs 11 is even, and is arranged to be symmetrically distributed on the left and right sides of the machine body 10, so as to ensure the overall balance of the machine body 10. For example, the number of battery packs 11 is six, and the six battery packs 11 are symmetrically arranged on the left and right sides of the machine body 10, that is, three battery packs 11 are arranged on the left and right sides of the machine body 10. This arrangement can provide sufficient power support for the endurance mileage of the machine body 10, and can ensure the balance performance of the machine body 10.

[0050] In an embodiment, the battery pack 11 is internally provided with battery cells and a liquid cooling plate, the liquid cooling plate comprises an inlet and an outlet capable of being communicated with a cooling liquid pipeline, so that the liquid cooling plate is capable of circulating cooling liquid, and the cooling liquid is circulated through the inlet and the outlet, the liquid cooling plate is used for heat exchange with the battery cells, so as to cooperate with the cooling circuit and the heating circuit to control and adjust the temperature of the battery cells. It can be understood that the series or parallel connection of the battery pack 11 described above refers to the connection of the liquid cooling plate to realize the circulation of the cooling liquid, and is not electrically connected with the battery cells.

[0051] In an embodiment, the cooling liquid is a mixture of ethylene glycol and water.

[0052] In an embodiment, as shown in Figure 2 , the battery circuit 101 further comprises a valve 17 corresponding to the number of the battery pack 11, each valve 17 is connected in series with a battery pack 11, the valve 17 is used for controlling the on-off of the cooling liquid of the battery pack 11 connected in series with the valve 17, when the battery pack 11 needs to be cooled, heat-insulated or heated, the valve 17 is opened to make the battery pack 11 communicated with the heating circuit or the cooling circuit, when the battery pack 11 fails or has thermal runaway, the valve 17 can cut off the circuit to avoid the influence of the battery pack 11 on other battery packs 11, which is beneficial to reduce the loss of the whole thermal management system to the minimum. Exemplarily, the valve 17 is an on-off valve.

[0053] In an embodiment, in combination with Figure 2 and Figure 3 , the cooling circuit comprises a refrigeration device 13, a heat exchange device 14 and a power pump 15, the heat exchange device 14 and the power pump 15 are connected in series through the cooling liquid pipeline to realize the circulation of the cooling liquid, the refrigeration device 13 is arranged on the machine body 10 or the ground, when the temperature of the battery pack 11 is greater than or equal to a first set temperature T1, the refrigeration device 13 cooperates with the heat exchange device 14 to cool the cooling liquid flowing through the heat exchange device 14, the power pump 15 is used for providing power to the cooling liquid in the cooling liquid pipeline to make the cooling liquid in the cooling liquid pipeline flow, the cooling liquid cooled through the heat exchange device 14 flows through the power pump 15 to cool the battery pack 11 in need to avoid the temperature of the battery pack 11 being too high.

[0054] Figure 3 The bold lines in the figure represent the circulation of the cooling liquid, and refer to Figure 3When the temperature of the battery pack 11 is greater than or equal to the first set temperature T1, the adjusting member 12 is put into operation, the cooling circuit is connected in series with the battery circuit 101 to realize the circulation of the cooling liquid, the refrigerating member 13, the heat exchanging member 14 and the power pump 15 are operated to reduce the temperature of the cooling liquid flowing through the heat exchanging member 14, the power pump 15 makes the cooling liquid flow to the battery circuit 101 to cool the required battery pack 11, the cooling liquid carries the heat of the battery pack 11 to the heat exchanging member 14, and then the cooling liquid is cooled by the cooperation of the refrigerating member 13 and the heat exchanging member 14 to complete the circulation of the cooling liquid.

[0055] For example, when the battery pack 11 is in the discharging state, the first set temperature T1 can be set according to the preferable discharging temperature of the battery pack 11; when the battery pack 11 is in the charging state, the first set temperature T1 can be set according to the preferable charging temperature of the battery pack 11.

[0056] For example, when the cooling circuit is arranged on the machine body 10, the refrigerating member 13 can adopt the air conditioning system on the machine body 10.

[0057] In an embodiment, in combination with Figure 2 and Figure 4 The heating circuit comprises the power pump 15 and the heating member 16 connected in series through the cooling liquid pipeline, the power pump 15 is used to provide power to the cooling liquid in the cooling liquid pipeline to make the cooling liquid in the cooling liquid pipeline flow, and the heating member 16 is used to heat the cooling liquid flowing therethrough when the temperature of the battery pack 11 is less than or equal to the second set temperature T2, the heated cooling liquid flows through the battery circuit 101 by the driving of the power pump 15 to heat or keep warm the required battery pack 11 to avoid the temperature of the battery pack 11 being too low.

[0058] Figure 4 The bold lines in the figure represent the circulation of the cooling liquid, and refer to Figure 4 When the temperature of the battery pack 11 is less than or equal to the second set temperature T2, the adjusting member 12 is put into operation, the heating circuit is connected in series with the battery circuit 101 to realize the circulation of the cooling liquid, the heating member 16 and the power pump 15 are operated to increase the temperature of the cooling liquid flowing through the heating member 16, the power pump 15 makes the cooling liquid flow to the battery circuit 101 to heat or keep warm the required battery pack 11, and the cooling liquid absorbing the heat of the battery pack 11 returns to the heating member 16 to be heated again to complete the circulation of the cooling liquid.

[0059] In an embodiment, for the cooling circuit, the adjusting member 12 is arranged between the heat exchanging member 14 and the power pump 15 to control the on-off of the cooling circuit and the battery circuit 101, and for the heating circuit, the adjusting member 12 is arranged between the heating member 16 and the power pump 15 to control the on-off of the heating circuit and the battery circuit 101.

[0060] Exemplarily, when the cooling circuit and the heating circuit are simultaneously provided in the machine body 10 or simultaneously provided on the ground, the two circuits share the power pump 15, and the regulating member 12 is arranged at the inlet side of the power pump 15. In this way, the number of power pumps 15 can be saved, which is conducive to reducing the overall weight of the machine body 10 and reducing the production cost. Of course, the power pumps 15 of the cooling circuit and the heating circuit can also be arranged separately.

[0061] Exemplarily, the regulating member 12 is a reversing valve.

[0062] Exemplarily, as shown in Figure 1 , a one-way check valve 18 is arranged at the inlet side of the power pump 15 to ensure that the cooling liquid in the cooling liquid pipeline can only flow in a single direction, avoiding the problem of reverse flow of the cooling liquid, which is conducive to ensuring the temperature regulation efficiency of the battery pack 11.

[0063] In an embodiment, as shown in Figure 6 , the number of battery circuits 101 is at least one, and at least two power pumps 15 are connected to the inlet side or the outlet side of the battery circuit 101 in parallel. In this way, when one of the power pumps 15 fails, the other power pump 15 can provide driving force for the battery circuit 101 to regulate the temperature of the required battery pack 11, which is conducive to ensuring the normal operation of the entire thermal management system and increasing the risk resistance.

[0064] In another embodiment, in combination with Figure 2 and Figure 5 , when the number of battery circuits 101 is at least two, the at least two battery circuits 101 are connected in parallel, and each battery circuit 101 is connected to one power pump 15 at the inlet side or the outlet side of the cooling liquid. The battery circuits 101 are connected through the connecting pipeline 102, the connecting pipeline 102 is used for circulating the cooling liquid, and the connection between the connecting pipeline 102 and the battery circuit 101 is located at the outlet side of the power pump 15.

[0065] Referring to Figure 5 , taking two battery circuits 101 and two power pumps 15 (a first power pump 15a and a second power pump 15b) as an example, when the first power pump 15a fails and the second power pump 15b can normally operate, the battery circuit 101 connected to the outlet side of the first power pump 15a loses the driving source of the cooling liquid. At this time, the second power pump 15b and the connecting pipeline 102 can be used to provide driving force for the battery circuit 101 connected in series with the first power pump 15a to regulate the temperature of the required battery pack 11, which is conducive to ensuring the normal operation of the entire thermal management system and increasing the risk resistance of the machine body 10.

[0066] In this embodiment, by arranging at least two battery packs 11 in different battery circuits 101, the load pressure of the power pump 15 on the inlet side of the battery circuit 101 can be reduced, and the failure probability of the power pump 15 can be reduced, thereby ensuring the normal operation of the entire thermal management system.

[0067] For example, each battery circuit 101 can be connected in series with at least two power pumps 15, and the at least two power pumps 15 can be connected in parallel, so as to increase the risk resistance of each battery circuit 101.

[0068] For example, the number of battery packs 11 connected in parallel in each battery circuit 101 can be the same or different. In a preferred example of this embodiment, the number of battery packs 11 connected in parallel in each battery circuit 101 is the same, and the power pump 15 can be of the same model. In particular, when the battery packs 11 are symmetrically distributed on the left and right sides of the body 10, the length of the cooling liquid pipe can be reduced, and the complexity of the cooling liquid pipe arrangement can be reduced.

[0069] In an embodiment, as shown in Figure 2 The cooling liquid pipe is connected with a liquid storage pot 19, the liquid storage pot 19 stores cooling liquid, the gas in the cooling liquid pipe can enter the liquid storage pot 19, and the cooling liquid in the liquid storage pot 19 can enter the cooling liquid pipe, so as to realize the exhaust and liquid supplement of the entire thermal management system, absorb the volume change caused by the temperature change of the cooling liquid, ensure the uniformity of the cooling liquid in the cooling liquid pipe, and ensure the stability of the pressure in the cooling liquid pipe, thereby ensuring the temperature regulation and control efficiency of the battery pack 11.

[0070] In an embodiment, as shown in Figure 7 When the cooling circuit and the heating circuit are both arranged on the ground, the cooling circuit and the heating circuit are arranged in an integrated system 20, and the integrated system 20 is located on the ground. When the body 10 is located on the ground, the integrated system 20 can be connected with the battery circuit 101 through the cooling liquid pipe, so as to output cooling liquid to the battery circuit 101, and cool, heat or maintain the temperature of the battery pack 11.

[0071] In an example of this embodiment, as shown in Figure 7 The body 10 is not provided with a power pump 15, and the cooling liquid in the cooling liquid pipe of the battery circuit 101 does not flow, and the temperature of the battery pack 11 is regulated only by the cooling liquid in the liquid cooling plate. This example is suitable for short-range applications, can greatly reduce the overall weight and investment cost of the body 10, and can cooperate with the integrated system 20 on the ground to regulate the temperature of the battery pack 11 of the body 10 parked on the ground.

[0072] In another example of this embodiment, as shown in Figure 8As shown, the battery circuit 101 comprises at least one power pump 15, and the power pump 15 is connected in series with the battery circuit 101. When the number of power pumps 15 is at least two, the at least two power pumps 15 are connected in parallel. The power pump 15 can drive the flow of the coolant in the coolant pipe, so as to cool the battery pack 11 by circulation of the coolant, and ensure uniform temperature change of the battery pack 11. This example scheme is suitable for short-range application scenarios, and can reduce the overall weight and investment cost of the machine body 10 as much as possible, and cooperate with the ground integrated system 20 to adjust the temperature of the battery pack 11 of the machine body 10 parked on the ground.

[0073] When the machine body 10 is before take-off, the integrated system 20 can perform thermal management on the battery circuit 101, so that the battery pack 11 can maintain an appropriate temperature (for example, a preferred discharge temperature) when the machine body 10 takes off; when the machine body 10 lands after completing the flight, the integrated system 20 can perform thermal management on the battery circuit 101 to avoid excessive temperature of the battery pack 11; when charging the battery pack 11, the integrated system 20 can make the battery pack 11 at an appropriate temperature (for example, a preferred charging temperature).

[0074] In this example, in the same battery circuit 101, each battery pack 11 can be connected in series with a power pump 15, and then connected in parallel with other battery packs 11, or each battery pack 11 is connected in parallel, and then connected in series with a power pump 15. The latter can reduce the weight of the machine body 10, save investment cost, and has better thermal management efficiency and reliability.

[0075] In this example, the number of battery circuits 101 is at least one, and at least two power pumps 15 are connected to the coolant inlet side or outlet side of the battery circuit 101, and the at least two power pumps 15 are connected in parallel. Or, when the number of battery circuits 101 is at least two, the at least two battery circuits 101 are connected in parallel, each battery circuit 101 is connected with a power pump 15 at the coolant inlet side or outlet side, and the connection between the connection pipe 102 and the battery circuit 101 is located at the outlet side of the power pump 15.

[0076] In an embodiment, as shown, Figure 2 The battery circuit 101 further comprises a temperature measuring element 21 arranged at the coolant inlet side and / or outlet side of the battery pack 11, for measuring the temperature of the coolant entering and / or flowing out of the battery pack 11, so as to adjust the temperature of the coolant by the cooling circuit and the heating circuit.

[0077] Exemplarily, the temperature measuring element 21 is arranged in the battery pack 11 to detect the temperature of the battery cell.

[0078] In an embodiment, as shown,Figure 2 As shown, the cooling circuit further comprises a temperature measuring member 21 arranged at the cooling liquid inlet side and / or outlet side of the heat exchange member 14 for measuring the temperature of the cooling liquid entering and / or flowing out of the heat exchange member 14, so as to adjust the temperature of the cooling liquid by the refrigeration member 13.

[0079] As shown, the eVTOL thermal management system of the utility model further comprises: Figure 9 As shown, the eVTOL thermal management system of the utility model further comprises:

[0080] A measuring module 22 is arranged for measuring the temperature of the battery pack 11, and for measuring the temperature of the cooling liquid inlet side and / or outlet side of the battery pack 11,

[0081] A control module 23 is in communication connection with the measuring module 22 and the adjusting member 12, the measuring module 22 can feed back the detected temperature information to the control module 23 in real time, the control module 23 receives the temperature information and sends control instructions to the adjusting member 12, so that the adjusting member 12 works, and then the cooling circuit is connected in series with the battery circuit 101 or the heating circuit is connected in series with the battery circuit 101.

[0082] In an embodiment, the control module 23 is in communication connection with at least two parallel power pumps 15, the power pump 15 is used for sending feedback information to the control module 23, when one of the power pumps 15 fails and the battery circuit 101 connected in series with it needs to be heat managed, the control module 23 sends control instructions to the power pump 15 connected in parallel with it, so that the power pump 15 works.

[0083] The working principle of the eVTOL thermal management system of the utility model is as follows:

[0084] Based on that the cooling circuit is arranged in the machine body 10 and the temperature of the battery pack 11 is greater than or equal to the first set temperature T1, the cooling circuit is connected in series with the battery circuit 101, and the cooling circuit cools the battery pack 11;

[0085] Based on that the cooling circuit is arranged on the ground, the machine body 10 is located on the ground, and the temperature of the battery pack 11 is greater than or equal to the first set temperature T1, the cooling circuit is connected in series with the battery circuit 101, and the cooling circuit cools the battery pack 11;

[0086] Based on that the heating circuit is arranged in the machine body 10 and the temperature of the battery pack 11 is less than or equal to the second set temperature T2, the heating circuit is connected in series with the battery circuit 101, and the heating circuit insulates or heats the battery pack 11;

[0087] Based on that the heating circuit is arranged on the ground, the machine body 10 is located on the ground, and the temperature of the battery pack 11 is less than or equal to the second set temperature T2, the heating circuit is connected in series with the battery circuit 101, and the heating circuit insulates or heats the battery pack 11.

[0088] Based on the fact that the machine body 10 is in a flight state and the temperature of the battery pack 11 is greater than or equal to the first set temperature T1, the power pump 15 is put into work to circulate the cooling liquid in the battery circuit 101.

[0089] Based on the above-mentioned thermal management system of the eVTOL battery, and with reference to Figure 1 The application further provides an aircraft, which comprises a machine body 10, and the machine body 10 is provided with the above-mentioned thermal management system of the eVTOL battery.

[0090] The above is only a specific implementation manner of the application, but the protection scope of the application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A thermal management system for an eVTOL battery, characterized by, The application relates to a battery cooling and heating system. The battery cooling and heating system comprises at least one battery circuit (101), at least two battery packs (11) arranged on a machine body (10), at least two battery packs (11) being connected in parallel through a cooling liquid pipeline for flowing cooling liquid, a cooling circuit arranged on the machine body (10) or the ground and capable of being connected in series with the battery circuit (101) through a cooling liquid pipeline for cooling the battery packs (11), a heating circuit arranged on the machine body (10) or the ground and capable of being connected in series with the battery circuit (101) through a cooling liquid pipeline for heating or keeping warm the battery packs (11), and a regulating member (12) capable of controlling the on-off connection between the cooling circuit, the heating circuit and the battery circuit (101) to realize the cooling, heating or keeping warm of the battery packs (11).

2. The thermal management system of an eVTOL battery of claim 1, wherein, The cooling circuit comprises a refrigerating member (13), a heat exchanging member (14) and a power pump (15), the heat exchanging member (14) and the power pump (15) being connected in series through the cooling liquid pipeline, and the refrigerating member (13) and the heat exchanging member (14) cooperating to lower the temperature of the cooling liquid in the cooling liquid pipeline when the temperature of the battery packs (11) is greater than or equal to a first set temperature T1.

3. The thermal management system of an eVTOL battery of claim 1, wherein, The heating circuit comprises a power pump (15) and a heating member (16) connected in series through the cooling liquid pipeline, and the heating member (16) heats the cooling liquid in the cooling liquid pipeline when the temperature of the battery packs (11) is lower than or equal to a second set temperature T2.

4. The thermal management system of an eVTOL battery according to claim 2 or 3, characterized in that, At least two power pumps (15) are connected to the inlet side or the outlet side of the battery circuit (101) in parallel.

5. The thermal management system of an eVTOL battery according to claim 2 or 3, characterized in that, When the number of the battery circuits (101) is at least two, the at least two battery circuits (101) are connected in parallel, one power pump (15) is connected to the inlet side or the outlet side of each battery circuit (101), the battery circuits (101) are communicated through a connecting pipeline (102) for flowing cooling liquid, and the connecting pipeline (102) is connected to the outlet side of the power pump (15).

6. The thermal management system of an eVTOL battery of claim 1, wherein, When the cooling circuit and the heating circuit are arranged on the ground, the cooling liquid in the cooling liquid pipeline of the battery circuit (101) does not flow, or the battery circuit (101) comprises at least one power pump (15) connected in series with the battery circuit (101), and when the number of the power pumps (15) is at least two, the at least two power pumps (15) are connected in parallel.

7. The thermal management system of an eVTOL battery of claim 1, wherein, The at least two battery packs (11) are symmetrically arranged on the left and right sides of the machine body (10).

8. The thermal management system of an eVTOL battery of claim 7, wherein, When the number of the battery circuits (101) is at least two, the number of the battery packs (11) connected in parallel in the battery circuits (101) is the same.

9. The thermal management system of an eVTOL battery of claim 1, wherein, The battery circuit (101) further comprises a valve (17) in series with the battery pack (11), each valve (17) being in series with a battery pack (11), the valve (17) being configured to control the on-off of the coolant to the battery pack (11) in series with the valve (17).

10. An aircraft characterized by, The application relates to an eVTOL battery thermal management system, comprising a machine body (10), wherein the machine body (10) is provided with the eVTOL battery thermal management system according to any one of claims 1 to 9.

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