Vehicle gear shifting device and method

Abstract

The invention provides a vehicle gear switching device and method, and relates to the technical field of vehicles. When the low gear is switched to the high gear, under the condition that the second shifting fork moves to the first switching area and the second switching area from the low gear area of the second sliding groove, the second gear shifting gear sleeve is disengaged from the second low gear gear; at the moment, the first shifting fork is still located in the low-gear area of the first sliding groove, the first gear shifting gear sleeve is still engaged with the first low-gear gear, and under the condition that the first shifting fork moves to the first switching area and the second switching area from the low-gear area of the first sliding groove, the first gear shifting gear sleeve is disengaged from the first low-gear gear; at the moment, the second shifting fork moves to a high-gear area of the second sliding groove. Due to the fact that the operation that the driving power of the wheels of the vehicle is not interrupted can be completed only through one gear shifting motor and one gear shifting drum in the process, the number of needed vehicle parts is small, arrangement is simple, the weight is light, and cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to a vehicle gear shifting device and method. Background Art

[0002] The driving of a vehicle mainly relies on the power of the motor system. Generally, a vehicle includes multiple gears for providing different powers, such as low gears (1st or 2nd gear), and high gears (3rd or 4th gear).

[0003] Currently, when shifting gears, two shifting motors can be controlled to respectively control two sets of shifting execution structures to shift gears alternately to achieve power interruption-free and improve the user's driving experience (such as no jitter). Since two shifting motors and two sets of shifting execution structures need to be arranged, the number of vehicle parts required is large, the arrangement is difficult, and the weight and cost are also high. Summary of the Invention

[0004] The present application provides a vehicle gear shifting device and method, which are used to solve the problems in the prior art that the vehicle gear shifting device has a large number of parts, is difficult to arrange, and has a high weight and high cost.

[0005] In a first aspect, the present application provides a vehicle gear shifting device, including a controller, a shifting motor, a shifting drum, a first shift fork, and a second shift fork. The controller is electrically connected to the shifting motor. The shifting drum is sleeved outside the rotating shaft of the shifting motor. A first chute and a second chute are arranged at intervals around the surface of the shifting drum in a circumferential direction;

[0006] One end of the first shift fork is slidably connected in the first chute, and the other end of the first shift fork is connected with a first shift gear sleeve. One end of the second shift fork is slidably connected in the second chute, and the other end of the second shift fork is connected with a second shift gear sleeve. The first chute and the second chute are divided into multiple regions in the circumferential direction. The multiple regions include a low gear region, a first switching region, a second switching region, and a high gear region that are successively and continuously arranged;

[0007] In the low gear regions of the first chute and the second chute, there is a preset first distance from the first low gear and the second low gear located on the first side of the shifting drum in the horizontal direction;

[0008] The first ends of the first switching region of the first chute and the first switching region of the second chute are closer to the first low gear and the second low gear in the horizontal direction than the second ends, and the first end of the first switching region is closer to the low gear region than the second end;

[0009] The first end of the second switching area of the first chute and the first end of the second switching area of the second chute are closer to the first low gear and the second low gear in the horizontal direction than the second end, and the first end of the second switching area is closer to the first switching area than the second end;

[0010] The distances between the high gear areas of the first chute and the second chute and the first low gear and the second low gear in the horizontal direction are equal to the distances between the second end of the second switching area and the first low gear and the second low gear in the horizontal direction;

[0011] The low gear areas of the first chute correspond to the first switching area and the second switching area of the second chute in the horizontal direction; the first switching area and the second switching area of the first chute correspond to the high gear areas of the second chute in the horizontal direction.

[0012] In some embodiments, the first switching area of the first chute includes a first inclined sub-area having a first end;

[0013] The first inclined sub-area starts from the first end and inclines away from the first low gear and the second low gear.

[0014] In some embodiments, the second switching area of the first chute includes a second inclined sub-area having a first end, and the second inclined sub-area of the first chute starts from the first end and inclines away from the first low gear and the second low gear.

[0015] In some embodiments, the first switching area of the second chute includes a third inclined sub-area having a first end;

[0016] The third inclined sub-area starts from the first end and inclines away from the first low gear and the second low gear.

[0017] In some embodiments, the second switching area of the second chute includes a fourth inclined sub-area having a first end;

[0018] The fourth inclined sub-area starts from the first end and inclines away from the first low gear and the second low gear.

[0019] In a second aspect, the present application also provides a vehicle gear shifting method, which is applied to the vehicle gear shifting device provided in the first aspect of the present application. The method provided by the present application includes:

[0020] The controller receives a gear shifting instruction;

[0021] Perform a gear shift operation, which includes: controlling the shift motor to drive the shift drum to rotate, so as to control the first shift fork to continuously slide in the low gear region, the first switching region, the second switching region, and the high gear region of the first chute in the order associated with the gear shift instruction; and controlling the second shift fork to continuously slide in the low gear region, the first switching region, the second switching region, and the high gear region of the second chute in the order associated with the gear shift instruction to complete the gear shift.

[0022] In some embodiments, the gear shift instruction is an instruction indicating a shift from a low gear to a high gear. The initial position of one end of the first shift fork is located in the low gear region of the first chute, and the initial position of one end of the second shift fork is located in the low gear region of the second chute. The gear shift operation includes:

[0023] Controlling the shift motor to drive the shift drum to rotate a preset angle in the first circumferential direction, so as to control one end of the first shift fork to slide within the low gear region of the first chute, and maintaining the first shift sleeve engaged with the first low gear, and controlling one end of the second shift fork to sequentially slide in the low gear region and the first switching region of the second chute to drive the second shift sleeve to disengage from the second low gear;

[0024] Controlling the shift motor to drive the shift drum to rotate another preset angle in the first circumferential direction, so as to control one end of the first shift fork to slide again within the low gear region of the first chute, and maintaining the first shift sleeve engaged with the first low gear, and controlling one end of the second shift fork to slide through the second switching region of the second chute to the high gear region to drive the second shift sleeve to engage with the second high gear located on the second side of the shift drum sleeve;

[0025] Controlling the shift motor to drive the shift drum to rotate another preset angle in the first circumferential direction, so as to control one end of the first shift fork to slide within the first switching region of the first chute to drive the first shift sleeve to disengage from the first low gear, and controlling the second shift fork to slide a preset distance within the high gear region of the second chute and maintaining the second shift sleeve engaged with the second high gear;

[0026] Controlling the shift motor to drive the shift drum to rotate another preset angle in the first circumferential direction, so as to control the first shift fork to slide through the second switching region of the first chute to the high gear region of the first chute to drive the first shift sleeve to engage with the first high gear located on the second side of the shift drum sleeve, and controlling the second shift fork to slide again within the high gear region of the second chute and maintaining the second shift sleeve engaged with the second high gear.

[0027] In some embodiments, the device provided by the present application further includes a first power driving motor and a second power driving motor respectively electrically connected to the controller. The controller is electrically connected to the first power driving motor and the second power driving motor respectively. The method provided by the present application further includes:

[0028] When the first shift sleeve is engaged with the first low gear and the second shift sleeve is engaged with the second low gear, the controller controls the first power driving motor to output a first power torque to drive the first low gear to output wheel driving power; and controls the second power driving motor to output a first power torque to drive the second low gear to output wheel driving power;

[0029] When the second shift sleeve is disengaged from the second low gear and the first shift sleeve is engaged with the first low gear, the controller controls the second power driving motor to stop outputting the first power torque; and controls the first power driving motor to output a second power torque to drive the first low gear to output wheel driving power, where the second power torque is twice the first power torque;

[0030] When the second shift sleeve is engaged with the second high gear and the first shift sleeve is disengaged from the first low gear, the controller controls the first power driving motor to stop outputting the second power torque; and controls the second power driving motor to output a third power torque to drive the second high gear to output wheel driving power, where the third power torque is higher than twice the first power torque;

[0031] When the first shift sleeve is engaged with the first high gear and the second shift sleeve is engaged with the second high gear, the controller controls the first power driving motor to output a fourth power torque to drive the first high gear to output wheel driving power; and controls the second power driving motor to output a fourth power torque to drive the second high gear to output wheel driving power, where the third power torque is twice the fourth power torque.

[0032] In some embodiments, the gear shifting instruction is an instruction for shifting from a high gear to a low gear. The initial position of one end of the first shift fork is located in the high gear area of the first chute, and the initial position of one end of the second shift fork is located in the high gear area of the second chute. The gear shifting operation includes:

[0033] Controlling the shift motor to drive the shift drum to rotate a preset angle along the second circumferential direction to control one end of the second shift fork to slide within the high gear area of the second chute, and keeping the second shift sleeve engaged with the second high gear located on the second side of the shift drum sleeve, and controlling one end of the first shift fork to slide successively within the high gear area and the second switching area of the first chute to drive the first shift sleeve to disengage from the first high gear located on the second side of the shift drum;

[0034] Control the shift motor to drive the shift drum to rotate another preset angle along the second circumferential direction, so as to control one end of the second shift fork to slide again in the high gear region of the second chute, and keep the second shift sleeve engaged with the second high gear, and control one end of the first shift fork to slide from the first switching region in the first chute to the low gear region of the first chute, so as to drive the first shift sleeve to engage with the first low gear;

[0035] Control the shift motor to drive the shift drum to rotate another preset angle along the second circumferential direction, so as to control one end of the first shift fork to continue to slide in the low gear region of the first chute, so as to keep the first shift sleeve engaged with the first low gear, and control one end of the second shift fork to slide through the second switching region of the second chute to the first switching region of the second chute, so as to drive the second shift sleeve to disengage from the second high gear located on the second side of the shift drum;

[0036] Control the shift motor to drive the shift drum to rotate another preset angle along the second circumferential direction, so as to control one end of the first shift fork to slide in the low gear region of the first chute, and keep the first shift sleeve engaged with the first low gear, and control the second shift fork to slide through the first switching region of the second chute to the low gear region of the second chute, so as to drive the second shift sleeve to engage with the second low gear located on the shift drum.

[0037] In some embodiments, the device provided in the present application further includes a first power driving motor and a second power driving motor respectively electrically connected to the controller. The controller is respectively electrically connected to the first power driving motor and the second power driving motor. The method provided in the present application further includes:

[0038] When the first shift sleeve is engaged with the first high gear and the second shift sleeve is engaged with the second high gear, the controller controls the first power driving motor to output a fourth power torque to drive the first high gear to output wheel driving power; and controls the second power driving motor to output a fourth power torque to drive the second high gear to output wheel driving power;

[0039] When the first shift sleeve is disengaged from the first high gear and the second shift sleeve is engaged with the second high gear, the controller controls the first power driving motor to stop outputting the fourth power torque, and controls the second power driving motor to output a third power torque to drive the second high gear to output wheel driving power, where the third power torque is twice the fourth power torque;

[0040] When the first shift sleeve is engaged with the first low gear and the second shift sleeve is disengaged from the second high gear, the controller controls the first power driving motor to output a second power torque to drive the first low gear to output wheel driving power, and controls the second power driving motor to stop outputting the third power torque;

[0041] When the first shift sleeve is engaged with the first low gear and the second shift sleeve is engaged with the second low gear, the controller controls the first power driving motor to output a first power torque to drive the first low gear to output wheel driving power; and controls the second power driving motor to output a first power torque to drive the second low gear to output wheel driving power, wherein the second power torque is twice the first power torque.

[0042] The present application provides a vehicle gear shifting device and method. Since the low gear regions of the first chute and the second chute are spaced apart from the first low gear and the second low gear located on the first side of the shift drum by a preset first distance in the horizontal direction; the first ends of the first switching regions of the first chute and the second chute are closer to the first low gear and the second low gear than the second ends in the horizontal direction, and the first end of the first switching region is closer to the low gear region than the second end; the first ends of the second switching regions of the first chute and the second chute are closer to the first low gear and the second low gear than the second ends in the horizontal direction, and the first end of the second switching region is closer to the first switching region than the second end; the distances between the high gear regions of the first chute and the second chute and the first low gear and the second low gear in the horizontal direction are equal to the distances between the second ends of the second switching regions and the first low gear and the second low gear in the horizontal direction

[0043] Moreover, the low gear region of the first chute corresponds to the first switching region and the second switching region of the second chute in the horizontal direction; the first switching region and the second switching region of the first chute correspond to the high gear region of the second chute in the horizontal direction.

[0044] Thus, when switching from a low gear to a high gear, when the second shift fork moves from the low gear region of the second sliding groove to the first switching region and the second switching region, the second shift sleeve disengages from the second low gear; at this time, the first shift fork is still in the low gear region of the first sliding groove, and the first shift sleeve is still engaged with the first low gear. At this time, it is still possible to maintain driving the first low gear to provide driving power for the vehicle wheels, ensuring that the driving power provided for the vehicle wheels is not interrupted; when the first shift fork moves from the low gear region of the first sliding groove to the first switching region and the second switching region, the first shift sleeve disengages from the first low gear. At this time, the second shift fork moves to the high gear region of the second sliding groove. At this time, it is still possible to maintain driving the second high gear to provide driving power for the vehicle wheels, ensuring that the driving power provided for the vehicle wheels is not interrupted;

[0045] When switching from a high gear to a low gear, when the first shift fork moves from the high gear region of the first sliding groove to the first switching region and the second switching region, the first shift sleeve disengages from the first low gear. At this time, the second shift fork is still in the high gear region of the second sliding groove, and the second shift sleeve is still engaged with the second high gear. At this time, it is still possible to maintain driving the second high gear to provide driving power for the vehicle wheels, ensuring that the driving power provided for the vehicle wheels is not interrupted; when the second shift fork moves from the high gear region of the second sliding groove to the second switching region and the first switching region, the second shift sleeve disengages from the second high gear. At this time, the first shift fork moves to the low gear region of the first sliding groove. At this time, it is still possible to maintain driving the first low gear to provide driving power for the vehicle wheels, ensuring that the driving power provided for the vehicle wheels is not interrupted.

[0046] Since only one shift motor and one shift drum are required to complete the operation of uninterrupted driving power for the vehicle wheels in the above process, the number of vehicle parts required is small, the layout is relatively simple, and the weight is light and the cost is low. Brief Description of the Drawings

[0047] 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 required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0048] Figure 1 It is a schematic structural diagram of a vehicle gear shifting device provided by an embodiment of the present application;

[0049] Figure 2 It is a schematic structural diagram of the shift drum unfolded along the circumference provided by an embodiment of the present application;

[0050] Figure 3 One of the flowcharts of the vehicle gear shifting method provided by the embodiments of the present application;

[0051] Figure 4 Another flowchart of the vehicle gear shifting method provided by the embodiments of the present application;

[0052] Figure 5 Another flowchart of the vehicle gear shifting method provided by the embodiments of the present application. Detailed implementation manners

[0053] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concepts of the present disclosure.

[0054] Various structural schematic diagrams according to embodiments of the present disclosure are shown in the accompanying drawings. These figures are not drawn to scale, where for the purpose of clear illustration, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary. In practice, there may be deviations due to manufacturing tolerances or technical limitations, and those skilled in the art can design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0055] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, the layer / element can be directly on the other layer / element, or there can be an intermediate layer / element between them. Additionally, if a layer / element is "on" another layer / element in one orientation, then when the orientation is reversed, the layer / element can be "under" the other layer / element.

[0056] Hereinafter, the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail with specific embodiments. These several specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Hereinafter, the embodiments of the present application will be described with reference to the accompanying drawings.

[0057] As Figure 1As shown in the figure, an embodiment of the present application provides a vehicle gear shifting device, which includes a controller (not shown in the figure), a shifting motor 112, a shifting drum 101, a first shift fork 104, and a second shift fork 105. The controller is electrically connected to the shifting motor 112. The shifting drum 101 is sleeved outside the rotating shaft of the shifting motor 112. A first chute 102 and a second chute 103 are arranged at intervals around the surface of the shifting drum 101. Among them, the controller may be, but is not limited to, an automatic transmission control unit TCU (Transmission Control Unit, TCU); the shifting drum 101 may be, but is not limited to, a cylindrical metal shifting drum, and the shifting motor 112 may be, but is not limited to, a DC brushless motor. One end of the first shift fork 104 is slidably connected in the first chute 102, and the other end of the first shift fork 104 is connected with a first shift gear sleeve 106. One end of the second shift fork 105 is slidably connected in the second chute 103, and the other end of the second shift fork 105 is connected with a second shift gear sleeve 107.

[0058] As Figure 2 shown, the first chute 102 and the second chute 103 are circumferentially divided into multiple regions, and the multiple regions include a low gear region 116, a first switching region 117, a second switching region 118, and a high gear region 119 that are successively and continuously arranged.

[0059] Specifically, the first switching region 117 of the first chute 102 includes a first inclined sub-region having a first end; the first inclined sub-region starts from the first end and inclines away from the first low gear 108 and the second low gear 109. The second switching region 118 of the first chute 102 includes a second inclined sub-region having a first end. The second inclined sub-region of the first chute 102 starts from the first end and inclines away from the first low gear 108 and the second low gear 109. The first switching region 117 of the second chute 103 includes a third inclined sub-region having a first end; the third inclined sub-region starts from the first end and inclines away from the first low gear 108 and the second low gear 109. The second switching region 118 of the second chute 103 includes a fourth inclined sub-region having a first end; the fourth inclined sub-region starts from the first end and inclines away from the first low gear 108 and the second low gear 109.

[0060] The low gear regions of the first chute 102 and the second chute 103 are horizontally spaced apart from the first low gear 108 and the second low gear 109 located on the first side of the shifting drum 101 by a preset first distance.

[0061] The first ends of the first switching regions 117 of the first chute 102 and the first switching regions 117 of the second chute 103 are closer to the first low gear 108 and the second low gear 109 than the second ends in the horizontal direction, and the first ends of the first switching regions 117 are closer to the low gear region than the second ends.

[0062] The first ends of the second switching regions 118 of the first chute 102 and the second switching regions 118 of the second chute 103 are closer to the first low gear 108 and the second low gear 109 than the second ends in the horizontal direction, and the first ends of the second switching regions 118 are closer to the first switching region 117 than the second ends.

[0063] The distances between the high gear regions 119 of the first chute 102 and the second chute 103 and the first low gear 108 and the second low gear 109 in the horizontal direction are equal to the distances between the second ends of the second switching regions 118 and the first low gear 108 and the second low gear 109 in the horizontal direction.

[0064] The low gear regions 116 of the first chute 102 correspond to the first switching regions 117 and the second switching regions 118 of the second chute 103 in the horizontal direction respectively; the first switching regions 117 and the second switching regions 118 of the first chute 102 correspond to the high gear regions 119 of the second chute 103 in the horizontal direction respectively.

[0065] As Figure 3 shown, an embodiment of the present application further provides a vehicle gear shifting method, which is applied to the vehicle gear shifting device provided in the above embodiment of the present application. The method provided in the embodiment of the present application includes:

[0066] S301: The controller receives a gear shifting instruction.

[0067] S302: Perform a gear shifting operation. The gear shifting operation includes: controlling the shifting motor 112 to drive the shifting drum 101 to rotate, so as to control the first shift fork 104 to continuously slide in the low gear region 116, the first switching region 117, the second switching region 118, and the high gear region 119 of the first chute 102 in the order associated with the gear shifting instruction; and controlling the second shift fork 105 to continuously slide in the low gear region 116, the first switching region 117, the second switching region 118, and the high gear region 119 of the second chute 103 in the order associated with the gear shifting instruction, so as to complete the gear shifting.

[0068] In some embodiments, the gear shifting instruction is an instruction for representing a shift from a low gear to a high gear. The initial position of one end of the first shift fork 104 is located in the low gear region 116 of the first chute 102, and the initial position of one end of the second shift fork 105 is located in the low gear region 116 of the second chute 103. As Figure 4 shown, S302 can be specifically implemented as:

[0069] S401: Control the shift motor 112 to drive the shift drum 101 to rotate a preset angle in the first circumferential direction, so as to control one end of the first shift fork 104 to slide within the low gear region 116 of the first chute 102, and keep the first shift gear sleeve 106 engaged with the first low gear 108, and control one end of the second shift fork 105 to slide successively within the low gear region 116 and the first switching region 117 of the second chute 103, so as to drive the second shift gear sleeve 107 to disengage from the second low gear 109.

[0070] S402: Control the shift motor 112 to drive the shift drum 101 to rotate another preset angle in the first circumferential direction, so as to control one end of the first shift fork 104 to slide again within the low gear region 116 of the first chute 102, and keep the first shift gear sleeve 106 engaged with the first low gear 108, and control one end of the second shift fork 105 to slide through the second switching region 118 of the second chute 103 to the high gear region 119, so as to drive the second shift gear sleeve 107 to engage with the second high gear 111 located on the second side of the shift drum 101.

[0071] S403: Control the shift motor 112 to drive the shift drum 101 to rotate another preset angle in the first circumferential direction, so as to control one end of the first shift fork 104 to slide within the first switching region 117 of the first chute 102, so as to drive the first shift gear sleeve 106 to disengage from the first low gear 108, and control the second shift fork 105 to slide a preset distance within the high gear region 119 of the second chute 103, and keep the second shift gear sleeve 107 engaged with the second high gear 111.

[0072] S404: Control the shift motor 112 to drive the shift drum 101 to rotate another preset angle in the first circumferential direction, so as to control the first shift fork 104 to slide through the second switching region 118 of the first chute 102 to the high gear region 119 of the first chute 102, so as to drive the first shift gear sleeve 106 to engage with the first high gear 110 located on the second side of the shift drum 101, and control the second shift fork 105 to slide again within the high gear region 119 of the second chute 103, and keep the second shift gear sleeve 107 engaged with the second high gear 111.

[0073] It should be noted that in the embodiments of the present application, the above-mentioned preset angle can be but is not limited to 72 degrees.

[0074] Furthermore, the device provided by the present application further includes a first power driving motor 113 and a second power driving motor 114 respectively electrically connected to the controller, and the controller is respectively electrically connected to the first power driving motor 113 and the second power driving motor 114. The method provided by the embodiments of the present application further includes:

[0075] Step 1: When the first shift sleeve 106 meshes with the first low gear 108 and the second shift sleeve 107 meshes with the second low gear 109, the controller controls the first power driving motor 113 to output a first power torque to drive the first low gear 108 to output the driving power for the wheel 115; and controls the second power driving motor 114 to output a first power torque to drive the second low gear 109 to output the driving power for the wheel 115.

[0076] Step 2: When the second shift sleeve 107 disengages from the second low gear 109 and the first shift sleeve 106 meshes with the first low gear 108, the controller controls the second power driving motor 114 to stop outputting the first power torque; and controls the first power driving motor 113 to output a second power torque to drive the first low gear 108 to output the driving power for the wheel 115, where the second power torque is twice the first power torque. In this way, the user can't feel the difference in the power output to the wheel 115 of the vehicle.

[0077] Step 3: When the second shift sleeve 107 meshes with the second high gear 111 and the first shift sleeve 106 disengages from the first low gear 108, the controller controls the first power driving motor 113 to stop outputting the second power torque; and controls the second power driving motor 114 to output a third power torque to drive the second high gear 111 to output the driving power for the wheel 115, where the third power torque is higher than twice the first power torque.

[0078] Step 4: When the first shift sleeve 106 meshes with the first high gear 110 and the second shift sleeve 107 meshes with the second high gear 111, the controller controls the first power driving motor 113 to output a fourth power torque to drive the first high gear 110 to output the driving power for the wheel 115; and controls the second power driving motor 114 to output a fourth power torque to drive the second high gear 111 to output the driving power for the wheel 115. The third power torque is twice the fourth power torque. In this way, the user can't feel the difference in the power output to the wheel 115 of the vehicle.

[0079] In some other embodiments, the gear shift instruction is an instruction indicating a shift from a high gear to a low gear. The initial position of one end of the first shift fork 104 is located in the high gear region 119 of the first chute 102, and the initial position of one end of the second shift fork 105 is located in the high gear region 119 of the second chute 103. As Figure 5 shown, S302 can also be specifically implemented as:

[0080] S501: Control the shift motor 112 to drive the shift drum 101 to rotate a preset angle in the second circumferential direction, so as to control one end of the second shift fork 105 to slide within the high gear region 119 of the second chute 103, and keep the second shift gear sleeve 107 engaged with the second high gear 111, and control one end of the first shift fork 104 to slide successively within the high gear region 119 and the second switching region 118 of the first chute 102, so as to drive the first shift gear sleeve 106 to disengage from the first high gear 110 located on the second side of the shift drum 101.

[0081] S502: Control the shift motor 112 to drive the shift drum 101 to rotate another preset angle in the second circumferential direction, so as to control one end of the second shift fork 105 to slide again within the high gear region 119 of the second chute 103, and keep the second shift gear sleeve 107 engaged with the second high gear 111, and control one end of the first shift fork 104 to slide from the first switching region 117 within the first chute 102 to the low gear region 116 of the first chute, so as to drive the first shift gear sleeve 106 to engage with the first low gear 108.

[0082] S503: Control the shift motor 112 to drive the shift drum 101 to rotate another preset angle in the second circumferential direction, so as to control one end of the first shift fork 104 to continue sliding within the low gear region 116 of the first chute, so as to keep the first shift gear sleeve 106 engaged with the first low gear 108, and control one end of the second shift fork 105 to slide through the second switching region 118 of the second chute 103 to the first switching region 117 of the second chute 103, so as to drive the second shift gear sleeve 107 to disengage from the second high gear 111 located on the second side of the shift drum 101.

[0083] S504: Control the shift motor 112 to drive the shift drum 101 to rotate another preset angle in the second circumferential direction, so as to control one end of the first shift fork 104 to slide within the low gear region 116 of the first chute 102, and keep the first shift gear sleeve 106 engaged with the first low gear 108, and control the second shift fork 105 to slide through the first switching region 117 of the second chute 103 to the low gear region 116 of the second chute 103, so as to drive the second shift gear sleeve 107 to engage with the second low gear 109 located on the shift drum 101.

[0084] Further, the device provided by the present application further includes a first power driving motor 113 and a second power driving motor 114 that are respectively electrically connected to the controller, and the controller is respectively electrically connected to the first power driving motor and the second power driving motor. The method provided by the embodiments of the present application further includes:

[0085] Step A: When the first shift sleeve 106 is engaged with the first high gear 110 and the second shift sleeve 107 is engaged with the second high gear 111, the controller controls the first power driving motor 113 to output a fourth power torque to drive the first high gear 110 to output a driving power for the wheel 115; and controls the second power driving motor 114 to output a fourth power torque to drive the second high gear 111 to output a driving power for the wheel 115.

[0086] Step B: When the first shift sleeve 106 is disengaged from the first high gear 110 and the second shift sleeve 107 is engaged with the second high gear 111, the controller controls the first power driving motor 113 to stop outputting the fourth power torque, and controls the second power driving motor 114 to output a third power torque to drive the second high gear 111 to output a driving power for the wheel 115. Wherein, the third power torque is twice the fourth power torque, so that the user can't feel the difference in the power output to the wheel 115 of the vehicle.

[0087] Step C: When the first shift sleeve 106 is engaged with the first low gear 108 and the second shift sleeve 107 is disengaged from the second high gear 111, the controller controls the first power driving motor 113 to output a second power torque to drive the first low gear 108 to output a driving power for the wheel 115, and controls the second power driving motor 114 to stop outputting the third power torque.

[0088] Step D: When the first shift sleeve 106 is engaged with the first low gear 108 and the second shift sleeve 107 is engaged with the second low gear 109, the controller controls the first power driving motor 113 to output a first power torque to drive the first low gear 108 to output a driving power for the wheel 115; and controls the second power driving motor 114 to output a first power torque to drive the second low gear 109 to output a driving power for the wheel 115. Wherein, the second power torque is twice the first power torque, so that the user can't feel the difference in the power output to the wheel 115 of the vehicle.

[0089] The present application provides a vehicle gear shifting device and method. Since the low gear regions of the first chute 102 and the second chute 103 are spaced apart from the first low gear 108 and the second low gear located on the first side of the shift drum 101 by a preset first distance in the horizontal direction; the first ends of the first switching regions 117 of the first chute 102 and the first switching regions 117 of the second chute 103 are closer to the first low gear 108 and the second low gear 109 in the horizontal direction than the second ends, and the first end of the first switching region 117 is closer to the low gear region 116 than the second end; the first ends of the second switching regions 118 of the first chute 102 and the second switching regions 118 of the second chute 103 are closer to the first low gear 108 and the second low gear 109 in the horizontal direction than the second ends, and the first end of the second switching region 118 is closer to the first switching region 117 than the second end; the distances between the high gear regions 119 of the first chute 102 and the second chute 103 and the first low gear 108 and the second low gear 109 in the horizontal direction are equal to the distances between the second ends of the second switching regions 118 and the first low gear 108 and the second low gear 109 in the horizontal direction.

[0090] Moreover, the low gear regions of the first chute 102 respectively correspond to the first switching region 117 and the second switching region 118 of the second chute 103 in the horizontal direction; the first switching region 117 and the second switching region 118 of the first chute 102 respectively correspond to the high gear region 119 of the second chute 103 in the horizontal direction.

[0091] In this way, when shifting from low gear to high gear, when the second shift fork 105 moves from the low gear region 116 of the second chute 103 to the first switching region 117 and the second switching region 118, the second shift gear sleeve 107 disengages from the second low gear 109; at this time, the first shift fork 104 is still in the low gear region 116 of the first chute 102, and the first shift gear sleeve 106 is still engaged with the first low gear 108. At this time, the driving of the first low gear 108 can still be maintained to provide driving power for the vehicle wheels 115, ensuring that the driving power provided for the vehicle wheels 115 is not interrupted; when the first shift fork 104 moves from the low gear region 116 of the first chute 102 into the first switching region 117 and the second switching region 118, the first shift gear sleeve 106 disengages from the first low gear 108. At this time, the second shift fork 105 moves to the high gear region 119 of the second chute 103. At this time, the driving of the second high gear 111 can still be maintained to provide driving power for the vehicle wheels 115, ensuring that the driving power provided for the vehicle wheels 115 is not interrupted;

[0092] When switching from a high gear to a low gear, when the first shift fork 104 moves from the high gear area 119 of the first sliding groove 102 to the first switching area 117 and the second switching area 118, the first shift gear sleeve 106 disengages from the first low gear 108. At this time, the second shift fork 105 is still in the high gear area 119 of the second sliding groove 103, and the second shift gear sleeve 107 remains engaged with the second high gear 111. At this time, the driving of the second high gear 111 can still be maintained to provide driving power for the vehicle wheels 115, ensuring that the driving power provided for the vehicle wheels 115 is not interrupted. When the second shift fork 105 moves from the high gear area 119 of the second sliding groove 103 to the second switching area 118 and the first switching area 117, the second shift gear sleeve 107 disengages from the second high gear 111. At this time, the first shift fork 104 moves to the low gear area 116 of the first sliding groove 102. At this time, the driving of the first low gear 108 can still be maintained to provide driving power for the vehicle wheels 115, ensuring that the driving power provided for the vehicle wheels 115 is not interrupted.

[0093] Since only one shift motor 112 and one shift drum 101 are required to complete the operation of uninterrupted driving power for the vehicle wheels 115 in the above process, the number of vehicle parts required is small, the layout is relatively simple, and the weight is light and the cost is low.

[0094] In the above description, technical details such as the composition of each layer are not described in detail. However, those skilled in the art should understand that various technical means can be used to form layers, regions, etc. of the required shapes. In addition, in order to form the same structure, those skilled in the art can also design methods that are not exactly the same as the methods described above. In addition, although the above embodiments are described separately, this does not mean that the measures in each embodiment cannot be used in combination advantageously.

[0095] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0096] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A vehicle gear switching device, characterized in that: It includes a controller, a shift motor, a shift drum, a first shift fork, and a second shift fork, wherein the controller is electrically connected to the shift motor, the shift drum is sleeved outside the rotating shaft of the shift motor, and a first slide groove and a second slide groove are arranged around the surface of the shift drum at intervals; One end of the first shift fork is slidably connected to the first slide groove, and the other end of the first shift fork is connected to the first shift gear sleeve, one end of the second shift fork is slidably connected to the second slide groove, and the other end of the second shift fork is connected to the second shift gear sleeve, and the first slide groove and the second slide groove are divided into a plurality of areas in the circumferential direction, and the plurality of areas include a low gear area, a first switching area, a second switching area, and a high gear area which are arranged in sequence; The low-gear regions of the first chute and the second chute are spaced apart from the first low-gear gear and the second low-gear gear located on the first side of the shift drum by a preset first distance in the horizontal direction; The first ends of the first switching area of ​​the first chute and the first switching area of ​​the second chute are closer to the first low gear and the second low gear in the horizontal direction than the second ends, and the first end of the first switching area is closer to the low gear area than the second end; The first ends of the second switching area of ​​the first chute and the second switching area of ​​the second chute are closer to the first low gear and the second low gear in the horizontal direction than the second ends, and the first end of the second switching area is closer to the first switching area than the second end; The high-speed region of the first chute and the high-speed region of the second chute are respectively spaced apart from the first low-speed gear and the second low-speed gear in the horizontal direction, and the distances between the second end of the second switching region and the first low-speed gear and the second low-speed gear in the horizontal direction are equal; The low gear area of ​​the first slide groove corresponds to the first switching area and the second switching area of ​​the second slide groove in the horizontal direction; the first switching area and the second switching area of ​​the first slide groove correspond to the high gear area of ​​the second slide groove in the horizontal direction.

2. The device according to claim 1, characterized in that The first switching region of the first chute includes a first inclined sub-region having the first end; The first inclined sub-region starts from the first end and is inclined in a direction away from the first low-range gear and the second low-range gear.

3. The device according to claim 1, characterized in that The second switching region of the first sliding slot includes a second inclined sub-region having the first end, and the second inclined sub-region of the first sliding slot is inclined from the first end toward a direction away from the first low-gear and the second low-gear.

4. The device according to claim 1, characterized in that The first switching region of the second chute includes a third inclined sub-region having the first end; The third inclined sub-region starts from the first end and is inclined in a direction away from the first low-gear and the second low-gear.

5. The device according to claim 1, characterized in that The second switching region of the second chute includes a fourth inclined sub-region having the first end; The fourth inclined sub-region starts from the first end and is inclined in a direction away from the first low-gear and the second low-gear.

6. A vehicle gear switching method, characterized in that: Applied to the vehicle gear shifting device according to any one of claims 1 to 5, the method comprises: The controller receives a gear switching instruction; Execute a gear switching operation, the gear switching operation comprising: controlling the gear shift motor to drive the gear shift drum to rotate, so as to control the first shift fork to slide continuously in the low gear area, the first switching area, the second switching area and the high gear area of ​​the first slide slot in the order associated with the gear switching instruction; and controlling the second shift fork to slide continuously in the low gear area, the first switching area, the second switching area and the high gear area of ​​the second slide slot in the order associated with the gear switching instruction to complete the gear switching.

7. The method according to claim 6, characterized in that The gear switching instruction is an instruction for switching from a low gear to a high gear, the initial position of one end of the first shift fork is located in the low gear area of ​​the first chute, the initial position of one end of the second shift fork is located in the low gear area of ​​the second chute, and the gear switching operation includes: Controlling the shift motor to drive the shift drum to rotate by a preset angle along a first circumferential direction, so as to control one end of the first shift fork to slide in the low-gear region of the first slide slot and keep the first shift gear sleeve engaged with the first low-gear gear, and controlling one end of the second shift fork to slide in the low-gear region and the first switching region of the second slide slot in sequence, so as to drive the second shift gear sleeve to release the engagement with the second low-gear gear; Controlling the shift motor to drive the shift drum to rotate again by a preset angle in the first circumferential direction, so as to control one end of the first shift fork to slide again in the low-gear region of the first slide slot and keep the first shift gear sleeve meshing with the first low-gear gear, and controlling one end of the second shift fork to slide to the high-gear region through the second switching region of the second slide slot, so as to drive the second shift gear sleeve to mesh with the second high-gear gear located on the second side of the shift drum sleeve; Controlling the shift motor to drive the shift drum to rotate a preset angle in the first circumferential direction, so as to control one end of the first shift fork to slide in the first switching area of ​​the first slide slot, so as to drive the first shift gear sleeve to release the meshing with the first low-gear gear, and controlling the second shift fork to slide a preset distance in the high-gear area of ​​the second slide slot, and keep the second shift gear sleeve meshing with the second high-gear gear; Control the shift motor to drive the shift drum to rotate a preset angle in the first circumferential direction, so as to control the first shift fork to slide to the high-speed area of ​​the first slide groove through the second switching area of ​​the first slide groove, so as to drive the first shift gear sleeve to engage with the first high-speed gear located on the second side of the shift drum sleeve, and control the second shift fork to slide again in the high-speed area of ​​the second slide groove, and keep the second shift gear sleeve engaged with the second high-speed gear.

8. The method according to claim 7, characterized in that The device further comprises a first power drive motor and a second power drive motor respectively electrically connected to the controller, the controller is respectively electrically connected to the first power drive motor and the second power drive motor, and the method further comprises: When the first shift gear sleeve is meshed with the first low gear and the second shift gear sleeve is meshed with the second low gear, the controller controls the first power drive motor to output a first power torque to drive the first low gear to output wheel driving power; and controls the second power drive motor to output a first power torque to drive the second low gear to output wheel driving power; When the second shift gear sleeve is disengaged from the second low gear and the first shift gear sleeve is engaged with the first low gear, the controller controls the second power drive motor to stop outputting the first power torque; and controls the first power drive motor to output the second power torque to drive the first low gear to output wheel driving power, wherein the second power torque is twice the first power torque; When the second shift gear sleeve is engaged with the second high-speed gear and the first shift gear sleeve is disengaged from the first low-speed gear, the controller controls the first power drive motor to stop outputting the second power torque; and controls the second power drive motor to output a third power torque to drive the second high-speed gear to output wheel driving power, wherein the third power torque is higher than twice the first power torque; When the first shift sleeve is engaged with the first high-speed gear and the second shift sleeve is engaged with the second high-speed gear, the controller controls the first power drive motor to output a fourth power torque to drive the first high-speed gear to output wheel driving power; and controls the second power drive motor to output a fourth power torque to drive the second high-speed gear to output wheel driving power, wherein the third power torque is twice the fourth power torque.

9. The method according to claim 6, characterized in that The gear switching instruction is an instruction for switching from a high gear to a low gear, the initial position of one end of the first shift fork is located in the high gear region of the first chute, and the initial position of one end of the second shift fork is located in the high gear region of the second chute, and the gear switching operation includes: Controlling the shift motor to drive the shift drum to rotate along the second circumferential direction by a preset angle, so as to control one end of the second shift fork to slide in the high-speed region of the second slide groove and keep the second shift gear sleeve engaged with the second high-speed gear located on the second side of the shift drum sleeve, and controlling one end of the first shift fork to slide in the high-speed region and the second switching region of the first slide groove in sequence, so as to drive the first shift gear sleeve to release the engagement with the first high-speed gear located on the second side of the shift drum; Controlling the shift motor to drive the shift drum to rotate again by a preset angle in the second circumferential direction, so as to control one end of the second shift fork to slide again in the high-gear region of the second slide slot and keep the second shift gear sleeve meshing with the second high-gear gear, and controlling one end of the first shift fork to slide from the first switching region in the first slide slot to the low-gear region of the first slide slot, so as to drive the first shift gear sleeve to mesh with the first low-gear gear; Controlling the shift motor to drive the shift drum to rotate another preset angle in the second circumferential direction, so as to control one end of the first shift fork to continue sliding in the low-gear region of the first slide slot, so as to keep the first shift gear sleeve engaged with the first low-gear gear, and controlling one end of the second shift fork to slide through the second switching region of the second slide slot to the first switching region of the second slide slot, so as to drive the second shift gear sleeve to release the engagement with the second high-gear gear located on the second side of the shift drum; Control the shift motor to drive the shift drum to rotate another preset angle in the second circumferential direction, so as to control one end of the first shift fork to slide in the low gear area of ​​the first slide groove and keep the first shift sleeve engaged with the first low gear, and control the second shift fork to slide to the low gear area of ​​the second slide groove through the first switching area of ​​the second slide groove, so as to drive the second shift sleeve to engage with the second low gear located on the shift drum.

10. The method according to claim 9, characterized in that The device further comprises a first power drive motor and a second power drive motor respectively electrically connected to the controller, the controller is respectively electrically connected to the first power drive motor and the second power drive motor, and the method further comprises: When the first shift gear sleeve is engaged with the first high-speed gear and the second shift gear sleeve is engaged with the second high-speed gear, the controller controls the first power drive motor to output a fourth power torque to drive the first high-speed gear to output wheel driving power; and controls the second power drive motor to output a fourth power torque to drive the second high-speed gear to output wheel driving power; When the first shift gear sleeve is disengaged from the first high-speed gear and the second shift gear sleeve is engaged with the second high-speed gear, the controller controls the first power drive motor to stop outputting the fourth power torque and controls the second power drive motor to output the third power torque to drive the second high-speed gear to output wheel driving power, wherein the third power torque is twice the fourth power torque; When the first shift gear sleeve is engaged with the first low gear and the second shift gear sleeve is disengaged from the second high gear, the controller controls the first power drive motor to output a second power torque to drive the first low gear to output wheel driving power, and controls the second power drive motor to stop outputting a third power torque; When the first shift sleeve is engaged with the first low-gear gear and the second shift sleeve is engaged with the second low-gear gear, the controller controls the first power drive motor to output a first power torque to drive the first low-gear gear to output wheel driving power; and controls the second power drive motor to output a first power torque to drive the second low-gear gear to output wheel driving power, wherein the second power torque is twice the first power torque.

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