Power system and vehicle

Abstract

The utility model belongs to the technical field of vehicles, and provides a power system and a vehicle, and the power system comprises a power domain controller, an aluminum-air fuel cell, a power cell assembly, a driving motor controller and a driving motor; the aluminum-air fuel cell and the driving motor controller are both electrically connected with the power battery assembly, and the driving motor controller is electrically connected with the driving motor; the aluminum-air fuel cell, the power cell assembly and the driving motor controller are all in communication connection with the power domain controller; the driving motor is connected with a transmission system of the vehicle. Therefore, the range extender is replaced by the aluminum-air fuel cell, so that the aluminum-air fuel cell can work normally in a low-temperature environment, and the problem of undervoltage of the power cell due to extremely low voltage is avoided. In addition, the aluminum-air fuel cell can generate a large amount of heat to heat the power cell during working, the heating time is shortened, the aluminum-air fuel cell has high energy density, the endurance mileage of the vehicle can be increased, meanwhile, the purpose of rapid charging can be achieved, and the charging duration is shortened.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicles, and particularly relates to a power system and a vehicle. BACKGROUND

[0002] With the rapid development and iteration of new energy vehicles, the demand for new energy vehicles in the market is increasing. At present, the power system of a range-extended electric vehicle (REEV) mainly includes a range extender and a power battery, which cannot work normally in an under-voltage condition or even cannot work in a low-temperature environment, thereby limiting the use scenarios of new energy vehicles.

[0003] Therefore, it is necessary to provide a power system capable of improving the power performance of new energy vehicles in a low-temperature environment, breaking through the limitation of the low-temperature environment, and improving the applicability of new energy vehicles. CONTENT OF THE INVENTION

[0004] The application aims to provide a power system and a vehicle, and aims to solve the technical problem of the limitation of the difficulty of normal operation of the power system in a low-temperature environment in the prior art.

[0005] In a first aspect, the application provides a power system of a vehicle, comprising: a power domain controller, an aluminum air fuel cell, a power battery assembly, a drive motor controller and a drive motor.

[0006] The aluminum air fuel cell and the drive motor controller are electrically connected with the power battery assembly, and the drive motor controller is electrically connected with the drive motor.

[0007] The aluminum air fuel cell, the power battery assembly and the drive motor controller are in communication connection with the power domain controller.

[0008] The drive motor is connected with a transmission system of the vehicle.

[0009] In some embodiments, the power system further comprises:

[0010] A direct current module, an input end of the direct current module is connected with an output end of the aluminum air fuel cell.

[0011] The power battery assembly is connected with an output end of the direct current module.

[0012] In some embodiments, the power battery assembly comprises a power battery, a battery management system and a battery distribution unit.

[0013] The power battery and the power domain controller are in communication connection with the battery management system.

[0014] The input end of the battery distribution unit is connected with the power battery, and the output end of the battery distribution unit is connected with the drive motor controller.

[0015] The aluminum-air fuel cell and the drive motor controller are both electrically connected with the power battery.

[0016] In some embodiments, the power battery comprises a plurality of lithium ion batteries.

[0017] In some embodiments, the aluminum-air fuel cell is electrically connected with the drive motor controller.

[0018] In some embodiments, the aluminum-air fuel cell comprises a first module and a second module.

[0019] The first module is electrically connected with the power battery assembly, and the second module is electrically connected with the drive motor controller.

[0020] In some embodiments, the power system further comprises a power management system.

[0021] The aluminum-air fuel cell and the drive motor controller are both electrically connected with the power battery assembly through the power management system.

[0022] The power management system is in communication connection with the power battery assembly.

[0023] In some embodiments, the power system further comprises a vehicle-to-load interface.

[0024] The vehicle-to-load interface is connected with the power management system.

[0025] In some embodiments, the drive motor controller comprises a front-wheel drive motor controller and / or a rear-wheel drive motor controller.

[0026] The drive motor comprises a front-wheel drive motor and / or a rear-wheel drive motor.

[0027] The front-wheel drive motor controller is electrically connected with the front-wheel drive motor, and the rear-wheel drive motor controller is electrically connected with the rear-wheel drive motor.

[0028] In a second aspect, the embodiments of the present application further provide a vehicle, comprising a transmission system and the power system of the first aspect.

[0029] The transmission system is connected with the drive motor in the power system.

[0030] The embodiment of the present application provides a power system and a vehicle, wherein the power system comprises a power domain controller, an aluminum air fuel cell, a power battery assembly, a drive motor controller and a drive motor; the aluminum air fuel cell and the drive motor controller are electrically connected with the power battery assembly, and the drive motor controller is electrically connected with the drive motor; the aluminum air fuel cell, the power battery assembly and the drive motor controller are in communication connection with the power domain controller; and the drive motor is connected with a transmission system of the vehicle. In this way, the aluminum air fuel cell can replace the range extender in the power system architecture of the REEV whole vehicle, can normally work in a low-temperature environment, and meanwhile, the aluminum air fuel cell can offset a part of polarization by small-current recharging of the power battery in the low-temperature environment, slow down the voltage drop rate of the power battery, and avoid the under-voltage problem caused by the rapid voltage drop of the power battery. In addition, the aluminum air fuel cell can generate a large amount of heat to warm up the power battery when working, thereby shortening the warming-up time, and the aluminum air fuel cell itself has a high energy density, so that the cruising range of the vehicle can be improved, and the purpose of rapid power supply can be achieved, and the charging time is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0032] Figure 1 FIG. 1 is a structural schematic diagram of the power system provided by the embodiment of the present application.

[0033] The meanings of the marks in the figure are as follows:

[0034] 1, power domain controller;

[0035] 2, aluminum air fuel cell;

[0036] 3, power battery assembly; 31, power battery; 32, battery management system; 33, battery distribution unit;

[0037] 4, drive motor controller; 41, front-wheel drive motor controller; 42, rear-wheel drive motor controller;

[0038] 5, drive motor; 51, front-wheel drive motor; 52, rear-wheel drive motor;

[0039] 6, direct current module;

[0040] 7, power management system;

[0041] 8, vehicle-to-load interface;

[0042] 9. Transmission system. DETAILED DESCRIPTION

[0043] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0044] It should be noted that the terms "upper", "lower", "left", "right", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present patent. The terms "first", "second" are only for the purpose of convenience, and cannot be understood as indicating or implying relative importance or implying the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited. In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0045] It should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In order to illustrate the technical solutions described in the present application, the following will be described in detail in combination with specific drawings and embodiments.

[0047] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of a power system provided by the embodiment of the present application. The embodiment of the present application provides a power system of a vehicle, which can include a power domain controller 1, an aluminum air-fuel cell 2, a power battery assembly 3, a drive motor controller 4 and a drive motor 5; the aluminum air-fuel cell 2 and the drive motor controller 4 are electrically connected with the power battery assembly 3, and the drive motor controller 4 is electrically connected with the drive motor 5; the aluminum air-fuel cell 2, the power battery assembly 3 and the drive motor controller 4 are in communication connection with the power domain controller 1; and the drive motor 5 is connected with a transmission system 9 of the vehicle.

[0048] In the embodiment, as Figure 1As shown, the power source of the power system can include an aluminum-air fuel cell 2 and a power battery assembly 3, wherein the power battery assembly 3 can include a power battery 31 that provides power, and an output end of the aluminum-air fuel cell 2 can be connected to an input end of the power battery assembly 3, so that the aluminum-air fuel cell 2 can charge the power battery assembly 3.

[0049] It can be understood that the theoretical energy density of the aluminum-air fuel cell 2 is as high as 8140 Wh / kg, and the actual maximum value is currently up to 450 Wh / kg, which greatly improves the endurance of new energy vehicles. In combination with the power lithium ion battery, high endurance and high power can be realized at the same time. And the aluminum-air fuel cell 2 only consumes aluminum blocks, oxygen in the air and water in the electrolyte to provide electric energy when working, and can continue to work by replacing the aluminum electrode, and the generated product Al2O3.nH2O can be recycled and reused. It is a long-life, high-safety, high-performance and pollution-free battery that can quickly charge.

[0050] The aluminum-air fuel cell 2 has excellent low-temperature performance and can work normally at -40°C. By using the aluminum-air fuel cell 2 to replace the range extender, the vehicle can be powered in a low-temperature environment, allowing the vehicle to slowly drive, solving the problem that the vehicle cannot be started in a low-temperature environment because the range extender cannot be started. And the aluminum-air fuel cell 2 generates a large amount of heat when discharging, which can quickly heat the power battery 31 at extremely low temperature, so that the temperature of the power battery 31 can rise more quickly to the temperature at which it can normally work, and the speed of normal power supply of the power battery 31 is accelerated.

[0051] The power battery assembly 3 can be electrically connected to the drive motor controller 4 to provide power for the drive motor controller 4. The drive motor controller 4 can be electrically connected to the drive motor 5 for driving the drive motor 5. The drive motor 5 can be connected to the transmission system 9 of the vehicle. For example, the drive motor 5 can transmit output torque to the front wheels and rear wheels of the vehicle through a gearbox and a transmission shaft to drive the vehicle to run.

[0052] The power system can further include a power domain controller 1, which can be in communication connection with the aluminum-air fuel cell 2, the power battery assembly 3 and the drive motor controller 4 through a Controller Area Network (CAN) bus. The power domain controller 1 is an intelligent power assembly management unit that can realize functions such as transmission management, engine management, battery monitoring and alternator adjustment, and is used for optimization and control of the power assembly, and also has functions such as electrical intelligent fault diagnosis, intelligent power saving and bus communication.

[0053] The power system provided by the embodiments of the present application can replace the range extender in the power system architecture of the REEV whole vehicle by using the aluminum-air fuel cell 2, can normally work in a low-temperature environment, and can offset a part of polarization by small-current back charging of the power battery 31 in the low-temperature environment, slow down the voltage drop rate of the power battery 31, and avoid the problem of under-voltage of the power battery 31 due to rapid voltage drop. In addition, the aluminum-air fuel cell 2 can generate a large amount of heat to warm up the power battery 31 when working, shorten the warming-up time, and the aluminum-air fuel cell 2 itself has a high energy density, which can improve the cruising range of the vehicle and achieve the purpose of rapid power compensation and reduce the charging time.

[0054] In some embodiments, the power system can further include:

[0055] The direct current module 6 is connected with the output end of the aluminum-air fuel cell 2.

[0056] The power battery assembly 3 is connected with the output end of the direct current module 6.

[0057] In the embodiments, as shown in the figure, Figure 1 The power system can further include the direct current module 6, the input end of the direct current module 6 is connected with the output end of the aluminum-air fuel cell 2, and the output end of the direct current module 6 can be connected with the power battery assembly 3. The power domain controller 1 can also be connected with the direct current module 6 in communication through the CAN bus.

[0058] In this way, the voltage released by the aluminum-air fuel cell 2 can be rectified by the direct current module 6, and a voltage value of a specified voltage level is output to the power battery assembly 3 for charging.

[0059] In some embodiments, the power battery assembly 3 includes the power battery 31, the battery management system 32, and the battery distribution unit 33.

[0060] The power battery 31 and the power domain controller 1 are connected with the battery management system 32 in communication.

[0061] The input end of the battery distribution unit 33 is connected with the power battery 31, and the output end of the battery distribution unit 33 is connected with the drive motor controller 4.

[0062] The aluminum-air fuel cell 2 and the drive motor controller 4 are electrically connected with the power battery 31.

[0063] In the embodiments, as shown in the figure, Figure 1 The power battery assembly 3 can include the power battery 31, the battery management system 32, and the battery distribution unit 33.

[0064] The battery management system (BMS) 32 can communicate with the power battery 31 and the power domain controller 1 to monitor the normal operation and safe use of the power battery 31.

[0065] The input terminal of the Battery Distribution Unit (BDU) is connected to the power battery 31, and the output terminal is connected to the drive motor controller 4. It can control the power-on / off, pre-charge, and charging processes of the high-voltage electrical circuit of the power battery 31 to ensure its safe operation. The BDU can also be connected to the vehicle's high-voltage load and fast-charging harness via a high-voltage electrical interface to distribute and monitor the energy of the power battery 31. Simultaneously, it can monitor battery current, voltage, and other parameters in real time to ensure the stable operation of the power battery 31. The BDU incorporates relays, pre-charge resistors, and current sensors, enabling it to promptly cut off power in case of overload, short circuit, or other faults in the power battery 31, protecting both the power battery 31 and the vehicle.

[0066] The power battery 31 provides the main kinetic energy source for the vehicle. The aluminum-air fuel cell 2 can be electrically connected to the power battery 31 so that the aluminum-air fuel cell 2 can charge the power battery 31. The power battery 31 can also be electrically connected to the drive motor controller 4 so that the power battery 31 can supply power to the drive motor controller 4.

[0067] In some embodiments, the power battery 31 includes a plurality of lithium-ion batteries.

[0068] In this embodiment, the power battery 31 may include multiple lithium-ion batteries. For example, it may be a ternary lithium-ion battery (NCM) or a lithium iron phosphate battery (LFP), etc., without specific limitation here.

[0069] In some embodiments, the aluminum-air fuel cell 2 is electrically connected to the drive motor controller 4.

[0070] In this embodiment, as Figure 1 As shown, the aluminum-air fuel cell 2 can also be electrically connected to the drive motor controller 4. Thus, in extremely low-temperature environments, if the power battery 31 cannot function properly, the aluminum-air fuel cell 2 can directly power the drive motor controller 4 to allow the vehicle to travel at a slow speed. Simultaneously, the discharge releases heat, raising the ambient temperature of the power battery 31 and accelerating its normal power supply. This compensates for the limitations caused by the power battery 31's inability to function properly in low-temperature environments, improving the power performance of new energy vehicles in low-temperature conditions, overcoming the limitations of low-temperature environments, and enhancing the applicability of new energy vehicles.

[0071] In some embodiments, the aluminum-air fuel cell 2 comprises a first module and a second module;

[0072] The first module is electrically connected with the power battery assembly 3, and the second module is electrically connected with the drive motor controller 4.

[0073] In the embodiment, the aluminum-air fuel cell 2 can comprise two independent modules, i.e. the first module and the second module. The first module can be electrically connected with the power battery assembly 3 to charge the power battery assembly 3. The second module can be electrically connected with the drive motor controller 4 to provide power for the vehicle.

[0074] In other words, two aluminum-air fuel cells 2 can be used, one of which stores energy to charge the power battery 31, and the other of which provides power for the vehicle, so as to realize the ideal use scenario of charging and discharging at the same time and providing and supplementing power at the same time, and improve the power performance and cruising range of the vehicle.

[0075] In some embodiments, the power system further comprises a power management system 7;

[0076] The aluminum-air fuel cell 2 and the drive motor controller 4 are both electrically connected with the power battery assembly 3 through the power management system 7;

[0077] And the power management system 7 is in communication connection with the power battery assembly 3.

[0078] In the embodiment, as shown in Figure 1 The power system can further comprise a power management system 7 (PMS), which can be electrically connected with the aluminum-air fuel cell 2, the drive motor controller 4 and the power battery assembly 3, and in communication connection with the power battery assembly 3.

[0079] In this way, the stable and safe operation of the power battery assembly 3 can be ensured through the power management system 7, and the power supply can be comprehensively and efficiently controlled and managed, i.e. the power supply can be automatically managed and comprehensively dispatched through advanced monitoring, control and protection technologies.

[0080] In some embodiments, the power system further comprises a vehicle-to-load interface 8;

[0081] The vehicle-to-load interface 8 is connected with the power management system 7.

[0082] In the embodiment, the power system can further include a vehicle-to-load interface 8 (V2L interface). The vehicle-to-load interface 8 can be connected with the power management system 7 to provide power for external devices or loads through the vehicle-to-load interface 8, so that the vehicle is not only a means of transportation, but also a mobile power station to provide power for various electrical appliances, improving the intelligence and applicability of the vehicle.

[0083] In some embodiments, the drive motor controller 4 includes a front-wheel drive motor controller 41 and / or a rear-wheel drive motor controller 42.

[0084] The drive motor 5 includes a front-wheel drive motor 51 and / or a rear-wheel drive motor 52.

[0085] The front-wheel drive motor controller 41 is electrically connected with the front-wheel drive motor 51, and the rear-wheel drive motor controller 42 is electrically connected with the rear-wheel drive motor 52.

[0086] In the embodiment, the vehicle can be a two-wheel drive vehicle or a four-wheel drive vehicle. If the vehicle is a two-wheel drive vehicle, the drive motor controller 4 can include the front-wheel drive motor controller 41 or the rear-wheel drive motor controller 42. Correspondingly, the drive motor 5 includes the front-wheel drive motor 51 or the rear-wheel drive motor 52.

[0087] If the vehicle is a four-wheel drive vehicle, as shown in FIG. 1B, the drive motor controller 4 can include the front-wheel drive motor controller 41 and the rear-wheel drive motor controller 42. Correspondingly, the drive motor 5 includes the front-wheel drive motor 51 and the rear-wheel drive motor 52. Figure 1

[0088] The front-wheel drive motor controller 41 can drive the front-wheel drive motor 51, and the rear-wheel drive motor controller 42 can drive the rear-wheel drive motor 52. For example, the front-wheel drive motor 51 can transmit the output torque to the front wheels of the vehicle through a gearbox and a transmission shaft, and the rear-wheel drive motor 52 can transmit the output torque to the rear wheels of the vehicle through a gearbox and a transmission shaft, thereby driving the vehicle to travel.

[0089] Based on the power system provided in the embodiments of the present application, the embodiments of the present application further provide a vehicle including a transmission system 9 and the power system described above; wherein the transmission system 9 is connected with the drive motor 5 in the power system.

[0090] ​In this way, the aluminum air fuel cell 2 can replace the range extender in the power system architecture of the REEV vehicle, and can work normally in a low-temperature environment. In addition, the aluminum air fuel cell 2 can offset a part of polarization by small current back charging of the power battery 31 in a low-temperature environment, slow down the voltage drop rate of the power battery 31, and avoid the problem of under-voltage of the power battery 31 due to rapid voltage drop. In addition, the aluminum air fuel cell 2 can generate a large amount of heat to warm up the power battery 31 when working, thereby shortening the warming-up time. In addition, the aluminum air fuel cell 2 has a high energy density, which can improve the cruising range of the vehicle, and can achieve the purpose of rapid power compensation and reduce the charging time.

[0091] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0092] The principles and implementation modes of the present application are described by applying specific examples in this document, and the above examples are only used to help understand the method of the present application and its core idea. The above is only a preferred embodiment of the present application. It should be pointed out that due to the limitation of language expression, there are infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principles of the present application, or the above technical features can be combined in an appropriate manner. The improvements, refinements, changes or combinations, or the direct application of the technical concept and technical scheme of the utility model to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A powertrain system of a vehicle, characterized by, Comprising: a power domain controller, an aluminum air fuel cell, a power battery assembly, a drive motor controller and a drive motor; the aluminum air fuel cell and the drive motor controller are electrically connected with the power battery assembly, and the drive motor controller is electrically connected with the drive motor; the aluminum air fuel cell, the power battery assembly and the drive motor controller are in communication connection with the power domain controller; the drive motor is connected with the transmission system of the vehicle.

2. The power system of claim 1, wherein, Further comprising: a direct current module, an input end of the direct current module is connected with an output end of the aluminum air fuel cell; wherein, the power battery assembly is connected with an output end of the direct current module.

3. The power system of claim 1, wherein, the power battery assembly comprises a power battery, a battery management system and a battery distribution unit; the power battery and the power domain controller are in communication connection with the battery management system; an input end of the battery distribution unit is connected with the power battery, and an output end of the battery distribution unit is connected with the drive motor controller; the aluminum air fuel cell and the drive motor controller are electrically connected with the power battery.

4. The power system of claim 3, wherein, the power battery comprises a plurality of lithium ion batteries.

5. The power system of claim 1, wherein, the aluminum air fuel cell is electrically connected with the drive motor controller.

6. The power system of claim 5, wherein, the aluminum air fuel cell comprises a first module and a second module; wherein, the first module is electrically connected with the power battery assembly, and the second module is electrically connected with the drive motor controller.

7. The power system of claim 1, wherein, Further comprising a power management system; the aluminum air fuel cell and the drive motor controller are electrically connected with the power battery assembly through the power management system; and the power management system is in communication connection with the power battery assembly.

8. The power system of claim 7, wherein, Further comprising a vehicle to load interface; the vehicle to load interface is connected with the power management system.

9. The power system of claim 1, wherein, the drive motor controller comprises a front wheel drive motor controller and / or a rear wheel drive motor controller; the drive motor comprises a front wheel drive motor and / or a rear wheel drive motor; wherein, the front wheel drive motor controller is electrically connected with the front wheel drive motor, and the rear wheel drive motor controller is electrically connected with the rear wheel drive motor.

10. A vehicle characterized by comprising: the vehicle comprises a transmission system and a power system as claimed in any one of claims 1 to 9; wherein, the transmission system is connected with the drive motor in the power system.

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