Electric vehicle drive system and electric vehicle

Abstract

An electric vehicle driving system comprises a powertrain (1) and a transmission system (2); wherein the powertrain (1) comprises a first power output mechanism and a second power output mechanism, one end of the transmission system is connected to the first power output mechanism, and the other end is used to connect to an air-conditioning compressor, and the second power output mechanism is used to drive the electric vehicle. When the powertrain in the electric vehicle driving system drives the electric vehicle, it can also drive the air-conditioning compressor, so as to reduce the number of components inside the electric vehicle, reduce the space occupied, and reduce the cost. Also disclosed is an electric vehicle.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to an electric vehicle drive system and an electric vehicle. Background Art

[0002] As energy and environmental issues have become increasingly prominent in recent years, fuel-powered vehicles have been subject to certain restrictions and impacts. Electric vehicles are powered by a battery-drive motor-transmission system, and have many advantages over traditional fuel vehicles, such as energy saving, low pollution, and high efficiency. Therefore, they have developed rapidly in recent years.

[0003] In order to improve the comfort of riding, air conditioning has become an indispensable part of automobiles. However, if air conditioning is installed in electric vehicles, a separate drive motor must be configured for the air conditioner. The drive motor will take up part of the space of the entire vehicle, reducing the space available for passengers and increasing the cost of the electric vehicle. Summary of the invention

[0004] The present application provides an electric vehicle drive system and an electric vehicle, so that the powertrain of the electric vehicle drive system can drive the air-conditioning compressor inside the vehicle while driving the electric vehicle, so as to reduce the number of components inside the electric vehicle, thereby reducing the space occupancy and reducing costs.

[0005] In the first aspect, an embodiment of the present application provides an electric vehicle drive system, including a powertrain and a transmission system; the powertrain includes a first power output mechanism and a second power output mechanism, wherein the first power output mechanism is connected to one end of the transmission system, and the other end of the transmission system is used to connect to an air-conditioning compressor. The first power output mechanism is used to drive the air-conditioning compressor to work through the transmission system; the second power output mechanism is used to drive the vehicle to travel. Specifically, when the powertrain drives the electric vehicle, part of the power of the powertrain can also be delivered to the air-conditioning compressor to drive the air-conditioning compressor to work. Therefore, the electric vehicle does not need to separately set a drive motor for the air-conditioning compressor, thereby saving space inside the electric vehicle and reducing the cost of the electric vehicle.

[0006] In one embodiment of the present application, a powertrain may include a drive motor and a transmission, the transmission includes an input shaft, an intermediate shaft and an output half shaft, and the input shaft, the intermediate shaft and the output half shaft are transmission-connected; one end of the input shaft is connected to the drive motor; the first power output mechanism may be an input shaft and an output shaft arranged in the transmission, and the second power output mechanism includes the output half shaft; the transmission system includes two connecting mechanisms and a transmission mechanism; among the two connecting mechanisms, one end of one connecting mechanism is connected to the input shaft of the transmission, and the other end of one connecting mechanism is connected to the transmission mechanism; one end of the other connecting mechanism is connected to the intermediate shaft of the transmission, and the other end of the other connecting mechanism is connected to the transmission mechanism; the transmission mechanism is used to connect to the air-conditioning compressor, so that the power in the powertrain can be transmitted to the air-conditioning compressor.

[0007] In one possible implementation, both connecting mechanisms may be two-way clutches, and one transmission mechanism may be a gear transmission mechanism; in this case, when the electric vehicle is in a forward state or in a parked state, the powertrain can drive the air-conditioning compressor to work through two two-way clutches and one gear transmission mechanism.

[0008] In another possible implementation, of the two connection mechanisms, the one connected to the input shaft may be a one-way clutch, the one connected to the intermediate shaft may be a two-way clutch, and one transmission mechanism may be a belt transmission mechanism; in this case, when the electric vehicle is in a forward state, a reverse state, or a parking state, the powertrain can drive the air conditioning compressor to work through a one-way clutch, a two-way clutch, and a belt transmission mechanism. In this way, the electric vehicle can turn on the air conditioner in any state.

[0009] In another possible implementation, among the two connection mechanisms, the connection mechanism connected to the input shaft can also be a one-way clutch, the connection mechanism connected to the intermediate shaft can be an integral shaft, and the transmission mechanism can be a belt transmission mechanism; in this case, when the electric vehicle is in a forward state, a reverse state, or a parking state, the powertrain can drive the air conditioning compressor to work through a one-way clutch, an integral shaft, and a belt transmission mechanism. In this way, the electric vehicle can turn on the air conditioner in any state.

[0010] It should be noted that, in the process of operating the air-conditioning compressor, the one-way clutch is opened or closed according to the rotation direction of the input shaft, and the two-way clutch and the belt transmission mechanism need to be opened or closed according to the driving state of the electric vehicle. In addition, when the transmission system includes two connecting mechanisms and one transmission mechanism, the two connecting mechanisms can also be keys, sleeves or synchronizers, and the transmission mechanism can also be a chain transmission mechanism, which are not listed here.

[0011] In one embodiment of the present application, a powertrain may include a drive motor and a transmission, the transmission includes an input shaft, an intermediate shaft and an output half shaft, and the input shaft, the intermediate shaft and the output half shaft are drivingly connected; one end of the input shaft is connected to the drive motor; the first power output mechanism may include an input shaft or an intermediate shaft arranged in the transmission, and the second power output mechanism includes an output half shaft; the transmission system may include a connecting mechanism and a transmission mechanism, one end of the connecting mechanism is connected to the input shaft or the intermediate shaft of the transmission, and the other end of the connecting mechanism is connected to the transmission mechanism; the transmission mechanism is used to connect to the air-conditioning compressor, thereby transmitting power in the powertrain to the air-conditioning compressor.

[0012] In a possible implementation, one connection mechanism in the transmission system is a two-way clutch, and one transmission mechanism is a belt drive mechanism. In this case, one end of the two-way clutch is connected to the input shaft or the intermediate shaft, and the other end of the two-way clutch is connected to the belt drive mechanism, and the belt drive mechanism is used to connect to the air-conditioning compressor. When the electric vehicle is in a forward state or in a parking state, the powertrain can drive the air-conditioning compressor to work through a two-way clutch and a belt drive mechanism.

[0013] In one embodiment of the present application, a powertrain may include a drive motor and a transmission, the transmission includes an input shaft, an intermediate shaft and an output half shaft, and the input shaft, the intermediate shaft and the output half shaft are drivingly connected; one end of the input shaft is connected to the drive motor; the first power output mechanism may include an input shaft or an intermediate shaft arranged in the transmission, and the second power output mechanism includes an output half shaft; the transmission system may include a connecting mechanism and a transmission mechanism; one end of the transmission mechanism is connected to the input shaft or the intermediate shaft of the transmission, and the other end of the transmission mechanism is connected to the connecting mechanism; the connecting mechanism is used to connect to the air-conditioning compressor, thereby transmitting power in the powertrain to the air-conditioning compressor.

[0014] In a possible implementation, one connection mechanism in the transmission system is a two-way clutch, and one transmission mechanism is a belt transmission mechanism. In this case, one end of the belt transmission mechanism can be connected to the input shaft or the intermediate shaft, and the other end of the belt transmission mechanism is connected to the two-way clutch, and the two-way clutch is used to connect to the air-conditioning compressor. When the electric vehicle is in a forward state or the electric vehicle is in a parking state, the powertrain can drive the air-conditioning compressor to work through a two-way clutch and a belt transmission mechanism.

[0015] It should be noted that when the transmission system includes a connecting mechanism and a transmission mechanism, the connecting mechanism can also be an integrated shaft, a key, a sleeve, a one-way clutch or a synchronizer, and the transmission mechanism can also be a gear transmission mechanism or a chain transmission mechanism, which are not listed here.

[0016] In one embodiment of the present application, a powertrain may include a drive motor and a transmission, the transmission includes an input shaft, an intermediate shaft and an output half shaft, the input shaft, the intermediate shaft and the output half shaft are transmission-connected; one end of the input shaft is connected to the drive motor; the first power output mechanism may include an input shaft or an intermediate shaft arranged in the transmission, and the second power output mechanism includes an output half shaft; the transmission system may include a connecting mechanism; one end of the connecting mechanism is connected to the input shaft or the intermediate shaft of the transmission, and the other end of the connecting mechanism is used to connect to the air-conditioning compressor, thereby transmitting power in the powertrain to the air-conditioning compressor.

[0017] In a possible implementation, a connection mechanism in the transmission system is a two-way clutch, one end of the two-way clutch is connected to the intermediate shaft on the transmission, and the other end of the two-way clutch is used to connect to the air-conditioning compressor. In this way, when the electric vehicle is in a forward state or in a parking state, the powertrain can drive the air-conditioning compressor to work through a two-way clutch.

[0018] In one embodiment of the present application, a powertrain may include a drive motor and a transmission, the transmission includes an input shaft, an intermediate shaft and an output half shaft, and the input shaft, the intermediate shaft and the output half shaft are transmission-connected; one end of the input shaft is connected to the drive motor; the first power output mechanism may include an input shaft or an intermediate shaft arranged in the transmission, and the second power output mechanism includes the output half shaft; the transmission system may include a transmission mechanism, and the first power output mechanism may be an input shaft or an intermediate shaft arranged in the transmission; one end of the transmission mechanism is connected to the input shaft or the intermediate shaft of the transmission, and the other end of the transmission mechanism is used to connect to the air-conditioning compressor, thereby transmitting the power in the powertrain to the air-conditioning compressor.

[0019] In a possible implementation, one of the transmission mechanisms in the transmission system is a belt transmission mechanism, one end of the belt transmission mechanism is connected to the input shaft or the intermediate shaft on the transmission, and the other end of the belt transmission mechanism is used to connect to the air-conditioning compressor. In this way, when the electric vehicle is in a forward state or the electric vehicle is in a parking state, the powertrain can drive the air-conditioning compressor to work through the belt transmission mechanism (which can be disconnected).

[0020] It should be noted that when the transmission system includes a connecting mechanism or a transmission mechanism, the connecting mechanism can also be an integrated shaft, a key, a sleeve, a one-way clutch or a synchronizer, and the transmission mechanism can also be a gear transmission mechanism or a chain transmission mechanism, which are not listed here.

[0021] In one embodiment of the present application, the powertrain further includes a drive motor and a transmission, the transmission includes an input shaft and an output half shaft, one end of the input shaft is connected to the drive motor; the second power output mechanism includes an output half shaft; the drive motor can be a dual output shaft motor, the transmission system can include a connecting mechanism, one output shaft of the dual output shaft motor is connected to the transmission, the other output shaft of the dual output shaft motor is connected to the connecting mechanism, the first power output mechanism includes the other output shaft of the dual output shaft motor, and the other end of the connecting mechanism is used to connect to the air conditioning compressor. In this way, the connecting mechanism can transmit the power in the powertrain to the air conditioning compressor.

[0022] In a possible implementation, the connection mechanism may be one of a sliding sleeve connection, a clutch, a synchronizer, or a belt drive connection (disconnectable).

[0023] In the above embodiment, the transmission can be a single-speed transmission, a two-speed transmission or a multi-speed transmission, and the transmission is provided with a neutral mechanism, which is arranged on the input shaft, the intermediate shaft, the output shaft or the differential assembly in the transmission. When the transmission module includes a connecting mechanism or a transmission mechanism, and the transmission is a single-speed transmission, the neutral mechanism is a synchronizer arranged on the input shaft; or, the neutral mechanism can also be a clutch arranged on the intermediate shaft; or, the neutral mechanism can also be a clutch or synchronizer arranged on the output shaft or the differential assembly.

[0024] In a second aspect, the present application also provides an electric vehicle having an electric vehicle drive system according to any one of the solutions in the first aspect. When driving the electric vehicle, the powertrain in the electric vehicle can also drive the air conditioning compressor in the vehicle to reduce the power consumption of the electric vehicle; in addition, there is no need to configure a motor for the air conditioning compressor separately, which can save space inside the electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the overall structure of an electric vehicle drive system provided in an embodiment of the present application;

[0026] Figure 2 A schematic structural diagram of a transmission system in an electric vehicle drive system provided in an embodiment of the present application, including two connecting mechanisms;

[0027] Figure 3 for Figure 2 The two connecting mechanisms are both structural schematic diagrams of bidirectional clutches;

[0028] Figure 4 for Figure 2 The two connecting mechanisms are respectively a one-way clutch and a two-way clutch;

[0029] Figure 5 for Figure 2 The structural schematic diagram of the two connecting mechanisms are a one-way clutch and an integrated shaft;

[0030] Figure 6 A schematic structural diagram of a transmission system in an electric vehicle drive system provided in an embodiment of the present application, comprising a transmission mechanism and a connection mechanism connected to a transmission input shaft;

[0031] Figure 7 A schematic structural diagram of a transmission system in an electric vehicle drive system provided in an embodiment of the present application, including a connecting mechanism and a transmission mechanism connected to a transmission intermediate shaft;

[0032] Figure 8 for Figure 6 A schematic diagram of a structure in which a transmission mechanism is a driving transmission mechanism and a connecting mechanism is a bidirectional clutch;

[0033] Fig. 9 for Figure 7 A schematic diagram of a structure in which a transmission mechanism is a driving transmission mechanism and a connecting mechanism is a bidirectional clutch;

[0034] Fig.10 A schematic structural diagram of a transmission system including a transmission mechanism in a drive system of an electric vehicle provided in an embodiment of the present application.

[0035] Fig.11 A schematic structural diagram of a transmission system including a connecting mechanism in a drive system of an electric vehicle provided in an embodiment of the present application.

[0036] Fig.12 for Fig.10 A transmission mechanism is a structural schematic diagram of a driving transmission mechanism;

[0037] Fig.13 for Fig.11 A schematic diagram of a structure in which one of the connecting mechanisms is a bidirectional clutch;

[0038] Fig.14 A schematic diagram of a structure in which a driving motor of an electric vehicle driving system provided in an embodiment of the present application is a dual-output shaft motor and a transmission system includes a connecting mechanism;

[0039] Fig.15 for Fig.14 A structural schematic diagram of a connecting mechanism in which a bidirectional clutch is provided.

[0040] Reference numerals:

[0041] 1-power assembly; 10-drive motor; 11-transmission; 110-output half shaft; 2-transmission system; 20, 20a, 20b-connecting mechanism; 21-transmission mechanism; 3-air conditioning compressor; 4-first power output mechanism; 40-input shaft; 41-intermediate shaft. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0043] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context.

[0044] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0045] With the development of electric vehicles, the requirements for the comfort and cruising range of electric vehicles are getting higher and higher, and the installation of air conditioning is an important manifestation of comfort. However, when air conditioning is installed in an electric vehicle, a separate drive motor for driving the air-conditioning compressor is required. The drive motor will occupy part of the space inside the electric vehicle, and a single drive motor driving the air-conditioning compressor will increase the power consumption of the electric vehicle and reduce the cruising range of the electric vehicle.

[0046] Based on the above problems, the present application provides an electric vehicle driving system. Figure 1The electric vehicle driving system may include a powertrain 1 and a transmission system 2, wherein the powertrain 1 includes a first power output mechanism and a second power output mechanism, the second power output mechanism can be used to drive the electric vehicle to travel, and the first power output mechanism drives the air-conditioning compressor 3 to work through the transmission system. When the powertrain 1 drives the electric vehicle to travel, a part of the power of the powertrain 1 will also be transmitted to the air-conditioning compressor 3 through the transmission system 2 to drive the air-conditioning compressor to work. At this time, the power source of the electric vehicle and the power source of the air-conditioning compressor 3 are both the powertrain 1, and there is no need to configure a motor for the air-conditioning compressor 3 separately, nor is there a need to reserve space for configuring the motor, thereby reducing the weight of the electric vehicle and reducing the cost of the electric vehicle; in addition, this driving method can also reduce power consumption.

[0047] In some embodiments, the powertrain may include a drive motor and a transmission, the transmission is connected to the output shaft of the drive motor, the first power output mechanism may be arranged on the drive motor or the transmission, and the second power output mechanism is connected to the output end of the transmission; the transmission system may include a transmission mechanism and / or at least one connecting mechanism, wherein the connecting mechanism may be configured as one of an integral shaft, a key, a sliding sleeve, a one-way clutch, a two-way clutch or a synchronizer; the transmission mechanism may be configured as a gear transmission mechanism, a belt transmission mechanism or a chain transmission mechanism; the transmission is one of a single-speed transmission, a two-speed transmission or a multi-speed transmission.

[0048] Specifically, refer to Figure 2 The transmission system 2 may include two connecting mechanisms 20a, 20b and a transmission mechanism 21. The output shaft of the driving motor 10 in the powertrain 1 is connected to the input shaft 40 of the transmission 11. The first power output mechanism 4 may be the input shaft 40 and the intermediate shaft 41 on the transmission 11. One end of a connecting mechanism 20a is connected to the input shaft 40, and the other end of a connecting mechanism 20a is connected to the transmission mechanism 21; one end of another connecting mechanism 20b is connected to the intermediate shaft 41, and the other end of another connecting mechanism 20b is connected to the transmission mechanism 21, wherein the transmission mechanism 21 is used to connect to the air-conditioning compressor 3; in this way, when the driving motor 10 drives the transmission 11, it can also provide power to the two connecting mechanisms through the input shaft 40 and the intermediate shaft 41 on the transmission 11, because the transmission mechanism 21 is used to connect the two connecting mechanisms to the air-conditioning compressor 3 to enable the air-conditioning compressor 3 to work.

[0049] Combined with reference Figure 2 and Figure 3, the two connecting mechanisms 20a and 20b in the transmission system 2 may both be two-way clutches, and the transmission mechanism 21 may be a gear transmission mechanism; in this case, the transmission 11 in the powertrain 1 may be a two-speed transmission 11, the input shaft 40 of the two-speed transmission 11 is connected to a two-way clutch, the intermediate shaft 41 of the two-speed transmission 11 is connected to another two-way clutch, the two two-way clutches are both connected to the gear transmission mechanism, and the gear transmission mechanism is connected to the air-conditioning compressor 3;

[0050] When the electric vehicle is running normally, the forward power of the driving motor 10 is transmitted to the two-speed transmission 11 through the input shaft 40 of the two-speed transmission 11, and the power is output to the output half shaft 110 (second power output mechanism) of the two-speed transmission 11 through the gear transmission inside the two-speed transmission 11, so as to supply the electric vehicle to run. If the air conditioner needs to be turned on, and the speed of the driving motor 10 is low and meets the speed requirement of the air conditioner compressor 3, the two-way clutch connected to the input shaft 40 on the two-speed transmission 11 is closed, and the two-way clutch connected to the intermediate shaft 41 on the two-speed transmission 11 is disconnected. The power output by the driving motor 10 drives the two-way clutch connected to the input shaft 40 to rotate through the input shaft 40 of the two-speed transmission 11, and transmits the power to the air conditioner compressor 3 through the gear transmission mechanism to drive the air conditioner compressor 3 to operate. If the air conditioner needs to be turned on and the speed of the drive motor 10 is higher than the speed requirement of the air-conditioning compressor 3, the two-way clutch connected to the input shaft 40 on the two-speed transmission 11 is disconnected, and the two-way clutch connected to the intermediate shaft 41 on the two-speed transmission 11 is closed. The power output by the drive motor 10 drives the two-way clutch connected to the intermediate shaft 41 to rotate through the intermediate shaft 41 of the two-speed transmission 11, and after the transmission speed is reduced by the gear transmission mechanism, the power is transmitted to the air-conditioning compressor 3 to drive the air-conditioning compressor 3 to work.

[0051] In addition, when the electric vehicle is in a reverse state, in order to protect the air-conditioning compressor 3 and prevent the air-conditioning compressor 3 from rotating in the reverse direction, both two-way clutches are in a disconnected state.

[0052] When the car is parked, the two-speed transmission 11 is in neutral. If the air conditioner needs to be turned on, the drive motor 10 rotates forward to drive the input shaft 40 of the two-speed transmission 11 to rotate, close the two-way clutch connected to the input shaft 40, and disconnect the two-way clutch connected to the intermediate shaft 41 on the two-speed transmission 11. The power output by the drive motor 10 can be transmitted to the air-conditioning compressor 3 through the two-way clutch connected to the input shaft 40.

[0053] Combined with reference Figure 2 and Figure 4In the above embodiment, the two connecting mechanisms 20a and 20b in the transmission system 2 can be a one-way clutch and a two-way clutch respectively, and the transmission mechanism 21 can be a belt transmission mechanism; at this time, the transmission 11 in the powertrain 1 can be a single-speed transmission 11, the one-way clutch is connected to the input shaft 40 of the single-speed transmission 11, the two-way clutch is connected to the intermediate shaft 41 of the single-speed transmission 11, and the one-way clutch and the two-way clutch are both connected to the belt transmission mechanism, and the belt transmission mechanism is used to connect to the air-conditioning compressor 3.

[0054] When the electric vehicle is moving forward normally, the driving motor 10 rotates forward to transmit power to the single-speed transmission 11, and the power is output to the output half shaft 110 (second power output mechanism) of the single-speed transmission 11 through the internal gear transmission of the single-speed transmission 11 to drive the electric vehicle forward. If the air conditioner needs to be turned on, the one-way clutch connected to the input shaft 40 of the single-speed transmission 11 is disconnected, and the two-way clutch connected to the intermediate shaft 41 of the single-speed transmission 11 is closed, so that the power output by the driving motor 10 drives the two-way clutch to rotate through the intermediate shaft 41 of the single-speed transmission 11, and the power is transmitted to the air-conditioning compressor 3 through the belt transmission mechanism to change the speed, so as to drive the air-conditioning compressor to operate.

[0055] When the electric vehicle is in reverse, the drive motor 10 rotates in reverse, the one-way clutch is closed, and the two-way clutch connected to the intermediate shaft 41 on the single-speed transmission 11 is disconnected. At this time, the air-conditioning compressor 3 can operate normally. In this way, the power output by the drive motor 10 is transmitted to the one-way clutch through the input shaft 40 of the single-speed transmission 11, and the air-conditioning compressor 3 is driven to operate by driving the transmission mechanism.

[0056] When the electric vehicle is in a parked state, if the air conditioner needs to be turned on, the single-speed transmission 11 is in a neutral state, the drive motor 10 is reversed, and the drive motor 10 drives the input shaft 40 of the single-speed transmission 11 to rotate. The one-way clutch connected to the input shaft 40 is in a closed state, and the two-way clutch connected to the intermediate shaft 41 on the single-speed transmission 11 is disconnected, so that power can be transmitted to the air-conditioning compressor 3 through the one-way clutch and the belt transmission mechanism.

[0057] Combined with reference Figure 2 and Figure 5 In the above embodiment, the two connecting mechanisms 20a and 20b in the transmission system 2 can also be a one-way clutch and an integrated shaft respectively, and the transmission mechanism 21 can be a disconnectable belt transmission mechanism; at this time, the transmission 11 in the powertrain 1 can be a two-speed transmission 11, the input shaft 40 of the two-speed transmission 11 is connected to one end of the one-way clutch, and the other end of the one-way clutch is connected to the belt transmission mechanism, and the intermediate shaft 41 of the two-speed transmission 11 is connected to the belt transmission mechanism through the integrated shaft, and the belt transmission mechanism is connected to the air-conditioning compressor 3.

[0058] When the electric vehicle is moving forward normally, the driving motor 10 rotates forward to transmit power to the two-speed transmission 11, and the power is transmitted to the output half shaft 110 (second power output mechanism) of the two-speed transmission 11 through the internal gear transmission of the two-speed transmission 11 to drive the electric vehicle forward. If the air conditioner needs to be turned on, the one-way clutch connected to the input shaft 40 is disconnected, and the belt transmission mechanism is closed, so that the power output by the driving motor 10 is transmitted to the belt transmission mechanism through the intermediate shaft 41 on the two-speed transmission 11 and the integral shaft connected to the intermediate shaft 41. After the belt transmission mechanism changes the speed, it transmits the power to the air conditioner compressor 3 to drive the air conditioner compressor 3 to operate.

[0059] When the electric vehicle is in a reversing state, the drive motor 10 reverses. At this time, the one-way clutch connected to the input shaft 40 on the two-speed transmission 11 is closed, and the belt transmission mechanism is disconnected. The power of the drive motor 10 is transmitted to the one-way clutch through the input shaft 40 of the two-speed transmission 11, and is transmitted to the air-conditioning compressor 3 by the driving transmission mechanism to drive the air-conditioning compressor 3 to rotate. In this way, the air-conditioning compressor 3 can operate normally when the electric vehicle is reversing.

[0060] When the electric vehicle is in a parked state and the air conditioner needs to be turned on, the two-speed transmission 11 is shifted into neutral, the drive motor 10 is reversed, the one-way clutch connected to the input shaft 40 on the two-speed transmission 11 is closed, and the belt transmission mechanism is disconnected; at this time, the input shaft 40 on the two-speed transmission 11 is driven to rotate, and the input shaft 40 drives the one-way clutch to rotate, and the power can be transmitted to the air-conditioning compressor 3 through the one-way clutch and the driving transmission mechanism to make the air-conditioning compressor 3 work.

[0061] Reference Figure 6 and Figure 7 In some embodiments, the transmission system 2 may further include a connecting mechanism 20 and a transmission mechanism 21, and the first power output mechanism may be an input shaft 40 or an intermediate shaft 41 on the transmission 11; specifically, when one end of the connecting mechanism 20 is connected to the input shaft 40 or the intermediate shaft 41, the other end of the connecting mechanism 20 is connected to the transmission mechanism 21, and the transmission mechanism 21 is used to connect to the air-conditioning compressor 3 to transmit the power of the driving motor 10 on the power assembly 1 to the air-conditioning compressor 3, so that the air-conditioning compressor 3 works; or, one end of the transmission mechanism 21 is connected to the input shaft 40 or the intermediate shaft 41, and the other end of the transmission mechanism 41 is connected to the connecting mechanism 20, and the connecting mechanism 20 is used to connect to the air-conditioning compressor 3 to transmit power to the air-conditioning compressor 3, so that the air-conditioning compressor 3 works.

[0062] Reference Figure 6 and Figure 8, taking the connection between one end of the connecting mechanism 20 and the input shaft 40 as an example: a connecting mechanism 20 in the above embodiment can be a two-way clutch, and the transmission mechanism 21 can be a belt drive mechanism; at this time, the transmission on the powertrain 1 can be a two-speed transmission 11, one end of the input shaft 40 on the two-speed transmission 11 is connected to the output shaft of the drive motor 10, the other end of the input shaft 40 on the two-speed transmission 11 is connected to one end of the two-way clutch, the other end of the two-way clutch is connected to the belt drive mechanism, and the belt drive mechanism is connected to the air-conditioning compressor 3.

[0063] When the electric vehicle is moving forward normally, the drive motor 10 rotates forward to transmit power to the two-speed transmission 11, and the power is output to the output half shaft 110 (second power output mechanism) of the two-speed transmission 11 through the internal gear transmission of the two-speed transmission 11, so as to supply the electric vehicle to move forward. If the air conditioner needs to be turned on, the two-way clutch connected to the input shaft 40 of the two-speed transmission 11 is closed, and the power output by the drive motor 10 drives the two-way clutch to rotate through the input shaft 10 of the two-speed transmission 11, and the power is transmitted to the air conditioner compressor 3 through the belt transmission mechanism to change the speed, so as to drive the air conditioner compressor 3 to operate.

[0064] When the electric vehicle is in a reverse state, the driving motor 10 rotates in the reverse direction. In order to protect the air-conditioning compressor 3 from rotating in the reverse direction, the bidirectional clutch connected to the two-speed transmission 11 is disconnected.

[0065] When the electric vehicle is in a parked state, if the air conditioner needs to be turned on, the two-speed transmission 11 is placed in neutral, the drive motor 10 rotates forward, drives the input shaft of the two-speed transmission 11 to rotate, and closes the two-way clutch so that the power of the drive motor 10 can be transmitted to the belt drive mechanism through the two-way clutch, and then transmitted to the air-conditioning compressor 3.

[0066] Reference Figure 7 and Fig. 9 , taking the connection between one end of the transmission mechanism 21 and the intermediate shaft 10 as an example: in the above embodiment, one connection mechanism 20 can be a two-way clutch, and one transmission mechanism 21 can be a belt drive mechanism; at this time, the transmission 11 on the power assembly 1 can be a single-speed transmission 11, and the intermediate shaft 41 in the single-speed transmission 11 is connected to the belt drive mechanism, and the two-way clutch is used to connect the belt drive mechanism to the air-conditioning compressor 3.

[0067] When the electric vehicle is moving forward normally, the driving motor 10 rotates forward to transmit power to the single-speed transmission 11, and the power is transmitted to the output half shaft 110 (second power output mechanism) of the single-speed transmission 11 through the internal gear transmission of the single-speed transmission 11 to drive the electric vehicle forward. If the air conditioner needs to be turned on, the two-way clutch connected to the driving transmission mechanism is closed, and the power output by the driving motor 10 is transmitted to the belt transmission mechanism through the intermediate shaft 41 of the single-speed transmission 11, and the power is transmitted to the two-way clutch through the belt transmission mechanism to change the speed, and drive the air conditioner compressor 3 to operate.

[0068] When the electric vehicle is in a reverse state, the driving motor 10 rotates in the reverse direction. In order to protect the air-conditioning compressor 3 from rotating in the reverse direction, the bidirectional clutch connected to the driving transmission mechanism needs to be disconnected.

[0069] When the electric vehicle is in a parked state, if the air conditioner needs to be turned on, the single-speed transmission 11 is in a neutral state, the drive motor 10 rotates forward to drive the intermediate shaft 41 of the single-speed transmission 11 to rotate, and the two-way clutch connected to the belt transmission mechanism is closed. The power output by the drive motor is transmitted to the belt transmission mechanism through the intermediate shaft 41 of the single-speed transmission 11, and the power is transmitted to the two-way clutch through the belt transmission mechanism to change the speed, so as to drive the air-conditioning compressor 3 to operate.

[0070] Reference Fig.10 and Fig.11 In some embodiments, the transmission system 2 may further include a connecting mechanism 20 or a transmission mechanism 21, and the first power output mechanism may be an input shaft (not shown in the figure) or an intermediate shaft 41 on the transmission 11; specifically, when the transmission system 2 includes a connecting mechanism 20, one end of the connecting mechanism 20 may be connected to the input shaft or the intermediate shaft 41, and the other end of the connecting mechanism 20 is connected to the air-conditioning compressor 3; when the transmission system 2 includes a transmission mechanism 21, one end of the transmission mechanism 21 is connected to the intermediate shaft 41 on the transmission 11, and the other end of the transmission mechanism 21 is used to connect to the air-conditioning compressor 3.

[0071] Reference Fig.10 and Fig.12 In the above embodiment, when the transmission system 2 includes a connecting mechanism 20, the connecting mechanism 20 can be a two-way clutch. At this time, the transmission 11 in the powertrain 1 can be a single-speed transmission 11; one end of the two-way clutch can be connected to the input shaft (not shown in the figure) or the intermediate shaft 41 of the single-speed transmission 11, and the other end of the two-way clutch is used to connect to the air-conditioning compressor 3.

[0072] When the electric vehicle is moving forward normally, the drive motor 10 rotates forward to transmit power to the single-speed transmission 11, and the power is transmitted to the output half shaft 110 (second power output mechanism) on the single-speed transmission 11 through the internal gear transmission of the single-speed transmission 11 to drive the electric vehicle forward. If the air conditioner needs to be turned on, the two-way clutch connected to the intermediate shaft 41 of the single-speed transmission 11 is closed, and the power output by the drive motor 10 drives the two-way clutch to rotate through the intermediate shaft 41 of the single-speed transmission 11 to drive the air conditioner compressor 3 to operate.

[0073] When the electric vehicle is in a reverse state, the drive motor 10 rotates in reverse. In order to protect the air-conditioning compressor 3 from reverse rotation and reduce the loss to the air-conditioning compressor 3, the two-way clutch connected to the intermediate shaft 41 of the single-speed transmission 11 is disconnected.

[0074] When the electric vehicle is in a parked state, if the air conditioner needs to be turned on, the single-speed transmission 11 is in a neutral state, the drive motor 10 rotates forward, and the two-way clutch connected to the intermediate shaft 41 of the single-speed transmission 11 is closed. The power output by the drive motor 10 drives the two-way clutch to rotate through the intermediate shaft 41 on the single-speed transmission 11 to drive the air-conditioning compressor 3 to operate.

[0075] Reference Fig.11 and Fig.13 In the above embodiment, when the transmission system 2 includes a transmission mechanism 21, and the transmission mechanism 21 can be a disconnectable belt transmission mechanism, at this time, the transmission 11 in the power assembly 1 can be a single-speed transmission 11; one end of the belt transmission mechanism can be connected to the intermediate shaft 41 of the single-speed transmission 11, and the other end of the belt transmission mechanism is used to connect to the air-conditioning compressor 3.

[0076] When the car is moving forward normally, the drive motor 10 rotates forward to transmit power to the single-speed transmission 11, and the power is transmitted to the output half shaft 110 (second power output mechanism) on the single-speed transmission 11 through the internal gear transmission of the single-speed transmission 11 to drive the electric car forward. If the air conditioner needs to be turned on, the belt transmission mechanism connected to the intermediate shaft 41 of the single-speed transmission 11 is closed, and the power output by the drive motor 10 is transmitted to the belt transmission mechanism through the intermediate shaft 41 of the single-speed transmission 11 to drive the air conditioner compressor 3 connected to the belt transmission mechanism to operate.

[0077] When the electric vehicle is in the reverse state, the drive motor 10 reverses. In order to protect the air-conditioning compressor 3 from rotating in the opposite direction and reduce the loss to the air-conditioning compressor 2, the belt drive mechanism connected to the intermediate shaft 41 of the single-speed transmission 11 is disconnected, so that power cannot be transmitted to the air-conditioning compressor 3. At this time, the air-conditioning compressor 3 does not work.

[0078] When the electric vehicle is in a parked state, if the air conditioner needs to be turned on, the single-speed transmission 11 can be placed in a neutral state, the drive motor 10 can rotate forward, drive the intermediate shaft 41 on the single-speed transmission 11 to rotate, close the belt transmission mechanism connected to the intermediate shaft 41 of the single-speed transmission 11, and the power output by the drive motor 10 can be transmitted to the belt transmission mechanism through the intermediate shaft 41 on the single-speed transmission 11 to drive the air-conditioning compressor 3 connected to the belt transmission mechanism to operate.

[0079] Reference Fig.14 and Fig.15 In some embodiments, the drive motor 10 in the powertrain 1 can be a dual-output shaft motor, the transmission system 2 includes a connecting mechanism 20, and the transmission 11 can be a two-speed transmission 11; the connecting mechanism 20 can be a two-way clutch, one output end of the dual-output shaft motor is connected to the transmission 11, and the other end (first power output mechanism) of the dual-output shaft motor is connected to the two-way clutch, and the two-way clutch is used to connect to the air-conditioning compressor 3.

[0080] When the electric vehicle is moving forward normally, the dual output shaft motor rotates forward, and one output shaft of the dual output shaft motor transmits power to the two-speed transmission 11. The power is transmitted to the output half shaft 110 (second power output mechanism) of the two-speed transmission 11 through the internal gear transmission of the two-speed transmission 11 to drive the electric vehicle forward. If the air conditioner needs to be turned on, the two-way clutch connected to the other output shaft of the dual output shaft motor is closed, and the other output shaft of the dual output shaft motor drives the two-way clutch to rotate, thereby driving the air conditioner compressor 3 to operate.

[0081] When the car is in the reverse state, the dual output shaft motor reverses. In order to protect the air-conditioning compressor 3 from reverse rotation and reduce the loss to the air-conditioning compressor 3, the bidirectional clutch connected to the other output shaft of the dual output shaft motor is disconnected.

[0082] When the car is parked, the air conditioner needs to be turned on, the two-speed transmission 11 is in neutral, and the two-way clutch connected to the other output shaft of the dual output shaft motor is closed. The other output shaft of the dual output shaft motor drives the two-way clutch to rotate, thereby driving the air conditioning compressor to operate.

[0083] It should be noted that the transmission also includes a neutral mechanism to enable the transmission to be in a neutral state. When the transmission module includes a connecting mechanism or a transmission mechanism and the transmission is a single-speed transmission, the neutral mechanism is a synchronizer arranged on the input shaft; or, the neutral mechanism is a clutch arranged on the intermediate shaft; or, the neutral mechanism is a clutch or synchronizer arranged on the output shaft or differential assembly.

[0084] The present application also provides an electric vehicle having an electric vehicle drive system in any of the above solutions. The powertrain in such an electric vehicle can drive an air-conditioning compressor to work when driving the electric vehicle to reduce the power consumption of the electric vehicle; in addition, there is no need to configure a motor for the air-conditioning compressor separately, saving space inside the electric vehicle.

[0085] 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.

Claims

1. An electric vehicle driving system, characterized in that: Includes powertrain and transmission system, including: The power assembly includes a first power output mechanism and a second power output mechanism; the first power output mechanism is connected to the transmission system, and the transmission system is used to connect to the air-conditioning compressor in the electric vehicle; The first power output mechanism is used to drive the air-conditioning compressor to work through the transmission system; The second power output mechanism is used to drive the electric vehicle to travel; The powertrain also includes a drive motor and a transmission, the transmission includes an input shaft, an intermediate shaft and an output half shaft in driving connection, one end of the input shaft is connected to the drive motor; the first power output mechanism includes the input shaft and the intermediate shaft, and the second power output mechanism includes the output half shaft; The transmission system includes two connecting mechanisms and a transmission mechanism, wherein two ends of one connecting mechanism are respectively connected to the other end of the input shaft and the transmission mechanism, and two ends of another connecting mechanism are respectively connected to the intermediate shaft and the transmission mechanism, and the transmission mechanism is used to connect to the air-conditioning compressor; When the air conditioner of the electric vehicle is turned on and the speed of the driving motor is low and meets the speed requirement of the air conditioner compressor, the power assembly drives the transmission system through the input shaft to drive the air conditioner compressor to operate; When the air conditioner of the electric vehicle is turned on and the speed of the driving motor is higher than the speed requirement of the air conditioner compressor, the power assembly drives the transmission system through the intermediate shaft to drive the air conditioner compressor to operate.

2. The electric vehicle driving system according to claim 1, characterized in that: The connection mechanism may be configured as one of an integrated shaft, a key, a sliding sleeve, a one-way clutch, a two-way clutch or a synchronizer; The transmission mechanism may be configured as one of a gear transmission mechanism, a belt transmission mechanism or a chain transmission mechanism.

3. The electric vehicle driving system according to claim 2, characterized in that: The two connection mechanisms are both bidirectional clutches, and the transmission mechanism is a gear transmission mechanism; or, In the two connection mechanisms, the connection mechanism connected to the input shaft is a one-way clutch, the connection mechanism connected to the intermediate shaft is a two-way clutch, and the transmission mechanism is a belt transmission mechanism; or, Among the two connection mechanisms, the connection mechanism connected to the input shaft is a one-way clutch, the connection mechanism connected to the intermediate shaft is an integral shaft, and the transmission mechanism is a belt transmission mechanism.

4. The electric vehicle driving system according to any one of claims 1 to 3, characterized in that: The transmission is one of a single-speed transmission, a two-speed transmission or a multi-speed transmission; The transmission is provided with a neutral mechanism, and the neutral mechanism is arranged on an input shaft, an intermediate shaft, an output half shaft or a differential assembly in the transmission.

5. The electric vehicle driving system according to claim 1, characterized in that: The transmission is a single-speed transmission; The single-speed transmission is provided with a neutral mechanism; wherein the neutral mechanism is a synchronizer arranged on the input shaft; or, the neutral mechanism is a clutch arranged on the intermediate shaft; or, the neutral mechanism is a clutch or synchronizer arranged on the output half shaft or differential assembly.

6. An electric vehicle, characterized in that: It comprises the electric vehicle driving system as claimed in any one of claims 1 to 5.

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