Electric vehicle

Abstract

The application relates to the technical field of electric vehicles, and particularly discloses an electric vehicle which comprises a flat fork and a motor, the flat fork comprises a first branch fork, the first branch fork is integrated with a liquid storage cavity and a first condensing channel, the electric vehicle integrates the first condensing pipe and the liquid storage cavity on the first branch fork, and the cooling liquid in the first condensing pipe is cooled through air cooling during the driving of the electric vehicle. An adjuster is integrated on the motor shell, the adjuster is driven to work through the rotating shaft of a rotor, the adjuster changes the working state of a liquid pump, and then changes the cooling effect on the motor body. Therefore, the above-mentioned features solve the problems that the cooling system structure is complex, arranged on a vehicle frame and occupies part of the installation space of the vehicle frame, further causes the cramped space of the whole vehicle, the line layout is relatively messy, and the reliability is relatively poor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicles, in particular to an electric vehicle. BACKGROUND

[0002] Electric vehicles have the advantages of environmental protection, energy saving, comfortable riding and simple operation, and therefore, electric vehicles are deeply loved by consumers.

[0003] With the increasing demand for environmental protection, the cost and technology of fuel motorcycles are also increasing, and high-speed electric motorcycles have also developed rapidly with market changes.

[0004] At present, the battery is the main key to endurance, and the battery of a high-power electric motorcycle is relatively large, occupying most of the layout space of the whole vehicle, and the effective layout of the motor and the electronic control is greatly limited. In order to make the motor and the electronic control smaller in size and stronger in power, the power density of the motor is required to be higher and higher, and the water cooling or oil cooling of the motor is inevitable. At present, the motor is mainly cooled by an external cooling system, which mainly includes a liquid storage box, an external liquid pump motor, a liquid pump and a condenser. The external cooling system has a complex structure and is arranged on the frame, occupying part of the mounting space of the frame, thereby causing the cramped space of the whole vehicle, the disordered layout of the lines and the poor reliability. SUMMARY

[0005] The purpose of the present application is to provide an electric vehicle to solve the problems of the complex structure of the external cooling system, the arrangement of the external cooling system on the frame, the occupation of part of the mounting space of the frame, the cramped space of the whole vehicle, the disordered layout of the lines and the poor reliability in the related art.

[0006] The present application provides an electric vehicle, which comprises:

[0007] A flat fork, comprising:

[0008] A first branch fork integrated with a liquid storage cavity and a first condensing channel, the first condensing channel being arranged in a serpentine shape, and the liquid inlet end of the first condensing channel being in communication with the liquid outlet of the liquid storage cavity;

[0009] A motor fixed to the flat fork, comprising:

[0010] A motor body comprising a motor shell, a rotor and a stator arranged in the motor shell, the stator being fixedly connected to the inner wall of the motor shell, the rotor being rotatably arranged in the stator and rotatably matched with the motor shell, the rotor being provided with a cooling pipeline, the liquid inlet end of the cooling pipeline being located outside the motor shell, and the liquid outlet end of the cooling pipeline being located inside the motor shell and opposite to the stator;

[0011] The regulator comprises a housing, a speed regulation mechanism, a driven shaft and a liquid pump arranged in the housing, the housing is fixedly connected with the motor shell, the driven shaft is rotatably arranged in the housing, the rotating shaft of the rotor extends into the housing and drives the speed regulation mechanism to act, the speed regulation mechanism is configured to drive the driven shaft to rotate at different speeds, the driven shaft drives the liquid pump to work, the cooling liquid in the liquid storage cavity enters the liquid pump through the first condensing channel, and the liquid inlet of the liquid storage cavity is in communication with the liquid outlet of the motor shell.

[0012] As a preferred technical solution of the electric vehicle, the speed regulation mechanism comprises at least two driving gears, at least two driven gears, a shaft sleeve and a driving assembly arranged in the housing, the at least two driving gears are spaced and sleeved on the rotating shaft and fixedly connected with the rotating shaft, the at least two driven gears are spaced and sleeved on the shaft sleeve, the axis of the driven shaft is parallel to the axis of the rotating shaft and is spaced from the rotating shaft, the shaft sleeve is sleeved on the driven shaft, the shaft sleeve is relatively fixed around the axis of the driven shaft and is slidingly fitted along the axis of the driven shaft, the number of teeth of the driving gears is different, and the driving assembly drives the shaft sleeve to move along the axis of the driven shaft and makes one of the at least two driving gears mesh with one of the at least two driven gears.

[0013] As a preferred technical solution of the electric vehicle, the driving gears are provided with two, the driven gears are provided with two, the two driving gears and the two driven gears are one-to-one corresponding and can be meshed with each other.

[0014] The driving assembly comprises a driving member, a first driven member and a second driven member, the driving member is fixedly arranged in the housing and slidingly fitted with the shaft sleeve, the first driven member and the second driven member are fixedly connected with the shaft sleeve, when the driving member drives the first driven member to abut against the driving member, one of the two driving gears meshes with one of the two driven gears, and when the driving member drives the second driven member to abut against the driving member, the other of the two driving gears meshes with the other of the two driven gears.

[0015] As the preferred technical scheme of the electric vehicle, the driving assembly further comprises a fixing frame, the fixing frame is fixedly connected with the shell, the driving member is fixedly arranged on the fixing frame, the driving member is an electromagnetic ring, the first driven member and the second driven member are magnetic rings, the driving member, the first driven member and the second driven member are sleeved on the shaft sleeve, the first driven member and the second driven member are located on two sides of the driving member along the axis of the driven shaft, the distance between the first driven member and the second driven member is greater than the width of the driving member along the axis of the driven shaft, and the magnetic poles of the first driven member and the second driven member at opposite ends are the same.

[0016] As the preferred technical scheme of the electric vehicle, the shell comprises a mounting cavity and a liquid cavity, the speed regulating mechanism, the driven shaft and the liquid pump are located in the mounting cavity, the liquid outlet of the liquid pump is in communication with the liquid cavity, and the liquid cavity is in communication with the cooling pipeline.

[0017] As the preferred technical scheme of the electric vehicle, the rotor further comprises a weight block fixedly arranged on the rotating shaft.

[0018] The cooling pipeline comprises a first flow channel and a second flow channel, the first flow channel is arranged on the rotating shaft along the axis direction of the rotating shaft, the second flow channel is arranged on the weight block along the radial direction of the weight block, one end of the first flow channel is in communication with the liquid cavity, the other end of the first flow channel is closed, one end of the second flow channel is in communication with the first flow channel, and the other end of the second flow channel is opposite to the stator.

[0019] As the preferred technical scheme of the electric vehicle, the cooling pipeline further comprises an annular flow groove and a third flow channel, the annular flow groove is arranged on the weight block and opposite to the rotating shaft, the third flow channel is arranged on the rotating shaft along the radial direction of the rotating shaft, one end of the third flow channel is in communication with the first flow channel, the other end of the third flow channel is opposite to the annular flow groove, and the annular flow groove is in communication with the second flow channel.

[0020] As the preferred technical scheme of the electric vehicle, the flat fork further comprises a second branch fork, the second branch fork is arranged opposite to and spaced from the first branch fork, the motor is fixedly connected with the second branch fork and located between the first branch fork and the second branch fork, the second branch fork is integrated with a second condensing channel, the second condensing channel is arranged in a snakelike shape, the liquid inlet end of the second condensing channel is in communication with the liquid outlet end of the first condensing channel, and the liquid outlet end of the second condensing channel is in communication with the liquid inlet of the liquid pump.

[0021] As the preferred technical scheme of the electric vehicle, the liquid storage cavity is spaced apart by a plurality of liquid separation plates along the length direction of the first branch fork, the plurality of liquid separation plates divide the liquid storage cavity into a plurality of separated cavities, and the plurality of separated cavities are in communication with each other.

[0022] As the preferred technical solution of the electric vehicle, the wheel hub is rotationally matched with the flat fork, and the rotating shaft of the motor drives the wheel hub to rotate through the transmission mechanism.

[0023] The present application has the following advantages:

[0024] The present application provides an electric vehicle, which comprises a flat fork and a motor. The flat fork comprises a first fork, and the first fork is integrated with a liquid storage cavity and a first condensing channel. The first condensing channel is arranged in a serpentine shape, and the liquid inlet end of the first condensing channel is in communication with the liquid outlet of the liquid storage cavity. The motor is fixed to the flat fork, and the motor comprises a motor body and an adjuster. The motor body comprises a motor shell, a rotor and a stator arranged in the motor shell. The stator is fixedly connected to the inner wall of the motor shell, and the rotor is arranged in the stator and rotationally matched with the motor shell. The rotor is provided with a cooling pipeline, the liquid inlet end of the cooling pipeline is located outside the motor shell, and the liquid outlet end of the cooling pipeline is located inside the motor shell and opposite to the stator. The adjuster comprises a shell and a speed regulating mechanism, a driven shaft and a liquid pump arranged in the shell. The shell is fixedly connected to the motor shell, the driven shaft is rotationally arranged in the shell, the rotating shaft of the rotor extends into the shell and drives the speed regulating mechanism to act, the speed regulating mechanism is configured to drive the driven shaft to rotate at different speeds, the driven shaft drives the liquid pump to work, the cooling liquid in the liquid storage cavity enters the liquid pump through the first condensing channel, the liquid pump pumps the cooling liquid entering the liquid pump into the cooling pipeline, and the liquid inlet of the liquid storage cavity is in communication with the liquid outlet of the motor shell. The first condensing channel and the liquid storage cavity are integrated on the first fork, and the cooling liquid in the first condensing channel is cooled by air cooling during the driving of the electric vehicle. The adjuster is integrated on the motor shell, the adjuster is driven to work by the rotating shaft of the rotor, the adjuster changes the working state of the liquid pump, and then changes the cooling effect of the motor body. Therefore, the above-mentioned features solve the problems of complex cooling system structure, occupation of part of the installation space of the vehicle frame, resulting in cramped vehicle space, relatively messy line layout and poor reliability. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure of the motor, the flat fork and the wheel hub in the embodiment of the present application is shown in the figure.

[0026] Figure 2 The structure of the motor and the flat fork in the embodiment of the present application is shown in the figure.

[0027] Figure 3 The cross-sectional view of the motor in the embodiment of the present application is shown in the figure.

[0028] Figure 4 The cross-sectional view of the speed regulating mechanism in the embodiment of the present application is shown in the figure.

[0029] Figure 5 The assembly of the driven shaft, the shaft sleeve and the driven gear in the embodiment of the present application is shown in the figure.

[0030] Figure 6 A schematic structural diagram of a fixing frame according to an embodiment of the present invention;

[0031] Figure 7 is a cross-sectional view of a fixing frame according to an embodiment of the present invention;

[0032] Figure 8 A schematic cross-sectional view of a weight block along its axial direction in an embodiment of the present invention;

[0033] Figure 9 is a schematic cross-sectional view of a rotating shaft along its axial direction in an embodiment of the present invention;

[0034] Figure 10 Schematic diagram of the structure of the liquid chamber in an embodiment of the present invention;

[0035] Figure 11 Schematic diagram of the structure of the flat fork in an embodiment of the present invention;

[0036] Figure 12 This is a schematic diagram of the structure of the first fork in an embodiment of the present invention. Figure 1 ;

[0037] Figure 13 This is a schematic diagram of the structure of the first fork in an embodiment of the present invention. Figure 2 ;

[0038] Figure 14 Schematic diagram of the structure of the second fork in an embodiment of the present invention;

[0039] Figure 15 Schematic diagram of the structure of the second cover plate in an embodiment of the present invention.

[0040] In the picture:

[0041] 1. Flat fork; 11. First fork; 111. Liquid storage chamber; 1111. Liquid storage tank; 1112. Third cover plate; 112. First condensation channel; 1121. First condensation tank; 1122. First cover plate; 113. Oil filling hole; 114. Observation hole; 115. Liquid barrier plate; 116. Ventilation hole;

[0042] 12. Second fork; 1211. Second condensation tank; 1212. Second cover plate; 13. Oil passage;

[0043] 2. Motor; 21. Motor body; 211. Rotor; 2111. Rotating shaft; 2112. Weight removal block; 2121. First flow channel; 2122. Second flow channel; 2123. Annular flow channel; 2124. Third flow channel;

[0044] 22, regulator; 221, housing; 2211, mounting cavity; 2212, liquid cavity; 2221, driving gear; 2222, driven gear; 2223, shaft sleeve; 2224, driving member; 2225, first driven member; 2226, second driven member; 2227, fixing frame; 2228, support; 2229, pressing plate;

[0045] 223, driven shaft;

[0046] 2241, pump housing; 2242, liquid inlet; 2243, liquid outlet; 2244, internal gear; 2245, external gear;

[0047] 3, hub. DETAILED DESCRIPTION

[0048] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0049] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the "upper", "above" and "on" of the first feature to the second feature include the vertical direction of the first feature above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature include the vertical direction of the first feature below and obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0050] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0052] like Figures 1-15 As shown, this embodiment provides an electric vehicle, which includes a flat fork 1 and a motor 2. The flat fork 1 includes a first fork 11, and the first fork 11 is integrated with a liquid storage chamber 111 and a first condensation channel 112. The first condensation channel 112 is arranged in a serpentine shape, and the liquid inlet end of the first condensation channel 112 is connected to the liquid outlet 2243 of the liquid storage chamber 111; the motor is fixed to the flat fork 1, and the motor 2 includes a motor body 21 and a regulator 22. The motor body 21 includes a motor housing and a rotor 211 and a stator arranged in the motor housing. The stator is fixed to the inner wall of the motor housing, and the rotor 211 is passed through the stator and rotates with the motor housing. The rotor 211 is provided with a cooling pipeline, and the liquid inlet end of the cooling pipeline is located outside the motor housing. The liquid outlet end of the pipeline is located inside the motor housing and opposite to the stator; the regulator 22 includes a shell 221 and a speed regulating mechanism, a driven shaft 223 and a liquid pump arranged in the shell 221. The shell 221 is fixed to the motor housing, and the driven shaft 223 is rotatably arranged in the shell 221. The rotating shaft 2111 of the rotor 211 extends into the shell 221 and drives the speed regulating mechanism to operate. The speed regulating mechanism is configured to drive the driven shaft 223 to rotate at different speeds. The driven shaft 223 drives the liquid pump to work. The coolant in the liquid storage chamber 111 enters the liquid pump through the first condensation channel 112. The liquid pump pumps the coolant entering the liquid pump into the cooling pipeline. The liquid inlet 2242 of the liquid storage chamber 111 is connected to the liquid outlet 2243 of the motor housing. When the liquid pump of the electric vehicle is working, the liquid pump draws the coolant in the liquid storage pot through the first condenser pipe to the cooling pipeline of the rotor 211. The coolant in the cooling pipeline is a high-pressure coolant. Therefore, the coolant is ejected from the cooling pipeline and sprayed onto the stator, thereby cooling the stator. The coolant carrying the heat of the stator flows out from the outlet of the motor housing and flows back into the liquid storage chamber 111. In this process, the first condenser pipe and the liquid storage chamber 111 are both integrated into the first fork 11, and then the electric vehicle cools the coolant in the first condenser pipe and the liquid storage chamber 111 by air cooling during driving. By adjusting the speed regulating mechanism, the speed of the driven shaft 223 is adjusted, and the cooling efficiency can be adjusted. For example, when the motor body 21 is working in a low-speed and high-torque state, the motor body 21 will generate a lot of heat. At this time, the speed regulating mechanism increases the speed of the driven shaft 223, which can improve the working efficiency of the liquid pump, thereby increasing the circulation speed of the coolant, and thus taking away more heat generated by the motor body 21.

[0053] The electric vehicle integrates the first condenser pipe and the liquid storage cavity 111 on the first branch fork 11, and the cooling liquid in the first condenser pipe is cooled by air cooling during the driving of the electric vehicle. The regulator 22 is integrated on the motor shell, and the rotor 211 drives the regulator 22 to work through the rotating shaft 2111 of the rotor 211. The regulator 22 changes the working state of the liquid pump, and further changes the cooling effect of the motor body 21. Therefore, the above characteristics solve the problems of complex cooling system structure, occupying part of the installation space of the vehicle frame, further causing the cramped space of the whole vehicle, the relatively chaotic line layout, and the relatively poor reliability.

[0054] Optionally, the speed regulation mechanism comprises at least two driving gears 2221, at least two driven gears 2222, a shaft sleeve 2223 and a driving assembly arranged in the shell 221. The at least two driving gears 2221 are spaced apart and sleeved on the rotating shaft 2111 and fixedly connected with the rotating shaft 2111. The at least two driven gears 2222 are spaced apart and sleeved on the shaft sleeve 2223. The axis of the driven shaft 223 is parallel to the axis of the rotating shaft 2111 and is spaced apart from the rotating shaft 2111. The shaft sleeve 2223 is sleeved on the driven shaft 223. The shaft sleeve 2223 is relatively fixed around the axis of the driven shaft 223 and is slidingly fitted along the axis of the driven shaft 223. The number of teeth of the driving gears 2221 is different. The driving assembly drives the shaft sleeve 2223 to move along the axis of the driven shaft 223 and makes one of the at least two driving gears 2221 engage with one of the at least two driven gears 2222. In this embodiment, according to the rotating speed of the motor body 21, the driving assembly is adjusted so that one of the at least two driving gears 2221 engages with one of the at least two driven gears 2222. Since the number of teeth of different driving gears 2221 is different, when the driving gears 2221 engage with the corresponding driven gears 2222, the transmission ratio of the driving gears 2221 and the driven gears 2222 engaged therewith is different. Therefore, the rotating speed of the driven shaft 223 can be adjusted, and since the driven shaft 223 drives the liquid pump to work, the amount of cooling liquid entering the cooling pipeline can be adjusted. Therefore, the driving assembly drives the shaft sleeve 2223 to move, so that the pair of gears with the maximum transmission ratio among the at least two driving gears 2221 and the at least two driven gears 2222 engage.

[0055] Specifically, the at least two driving gears 2221 and the at least two driven gears 2222 correspond one-to-one, and the modulus of the corresponding driving gears 2221 and driven gears 2222 is the same, and the number of teeth is different. Therefore, when different driving gears 2221 and corresponding driven gears 2222 engage, the corresponding transmission ratio is different.

[0056] Optionally, the end of the driven shaft 223 away from the liquid pump is provided with a bearing. The inner ring of the bearing is sleeved on the driven shaft 223 and is in interference fit with the driven shaft 223. The outer ring of the bearing is fixedly connected with the shell 221.

[0057] Optionally, the driven shaft 223 is a half-moon shaped driven shaft 223, the sliding hole of the shaft sleeve 2223 is a half-moon shaped sliding hole, and the driven shaft 223 is arranged in the sliding hole of the shaft sleeve 2223. In this embodiment, the driven shaft 223 can be relatively fixed around the axis of the driven shaft 223 and can slide along the axis of the driven shaft 223.

[0058] Optionally, the driving gear 2221 is provided with two driving gears, the driven gear 2222 is provided with two driven gears, and the two driving gears 2221 and the two driven gears 2222 are one-to-one corresponding and can be engaged with each other; the driving assembly comprises a driving member 2224, a first driven member 2225 and a second driven member 2226, the driving member 2224 is fixedly arranged on the housing 221 and is in sliding fit with the shaft sleeve 2223, the first driven member 2225 and the second driven member 2226 are fixedly connected with the shaft sleeve 2223, when the driving member 2224 drives the first driven member 2225 to abut against the driving member 2224, one of the two driving gears 2221 is engaged with one of the two driven gears 2222, and when the driving member 2224 drives the second driven member 2226 to abut against the driving member 2224, the other of the two driving gears 2221 is engaged with the other of the two driven gears 2222. In this embodiment, the driving gear 2221 is provided with two driving gears, the driven gear 2222 is provided with two driven gears, and the two driving gears 2221 and the two driven gears 2222 are one-to-one corresponding and engaged, so that two-stage speed change can be realized. The driving member 2224 can be a screw nut structure or a gear and rack structure, etc., which can realize linear motion.

[0059] Optionally, the driving assembly further comprises a fixing frame 2227 fixedly connected with the housing 221, and the driving member 2224 is fixedly arranged on the fixing frame 2227. The driving member 2224 is an electromagnetic ring, and the first driven member 2225 and the second driven member 2226 are magnetic rings. The driving member 2224, the first driven member 2225 and the second driven member 2226 are all sleeved on the shaft sleeve 2223. The first driven member 2225 and the second driven member 2226 are respectively located on two sides of the driving member 2224 along the axis of the driven shaft 223. The distance between the first driven member 2225 and the second driven member 2226 is greater than the width of the driving member 2224 along the axis of the driven shaft 223. The magnetic poles of the first driven member 2225 and the second driven member 2226 at one end are the same. In this embodiment, when the electromagnetic ring is forwardly electrified, the electromagnetic ring acts on the force of magnetic attraction between the first driven member 2225 and the electromagnetic ring, the force of repulsion between the second driven member 2226 and the electromagnetic ring, and the abutment between the first driven member 2225 and the electromagnetic ring. At this time, one driving gear 2221 is engaged with one driven gear 2222. When the electromagnetic ring is reversely electrified, the electromagnetic ring acts on the force of magnetic attraction between the second driven member 2226 and the electromagnetic ring, the force of repulsion between the first driven member 2225 and the electromagnetic ring, and the abutment between the second driven member 2226 and the electromagnetic ring. At this time, the other driving gear 2221 is engaged with the other driven gear 2222.

[0060] Optionally, the driving member 2224, the first driven member 2225 and the second driven member 2226 are all located between the two driven gears 2222. In this embodiment, this arrangement can shorten the length of the driven shaft 223, thereby saving space. Specifically, one end of the first driven member 2225 abuts against one driven gear 2222, the shaft sleeve 2223 is provided with a first groove in the circumferential direction, and a first circlip is arranged in the first groove. The other end of the first driven member 2225 abuts against the first circlip. One end of the second driven member 2226 abuts against the other driven gear 2222, the shaft sleeve 2223 is provided with a second groove in the circumferential direction, and a second circlip is arranged in the second groove. The other end of the second driven member 2226 abuts against the second circlip.

[0061] Optionally, the fixing frame 2227 comprises a support 2228 and a pressing plate 2229, the support 2228 is provided with a containing cavity with an opening, the electromagnetic ring is arranged in the containing cavity from the opening, the pressing plate 2229 is fixedly connected with the support 2228 and abuts against the electromagnetic ring, the pressing plate 2229 prevents the electromagnetic ring from separating from the containing cavity from the opening, and the support 2228 is fixedly connected with the shell 221. In the embodiment, the support 2228 is provided with a containing cavity with an opening and a through hole communicating with the containing cavity, the through hole of the support 2228 is opposite to the through hole of the electromagnetic ring when the electromagnetic ring is arranged in the containing cavity, the pressing plate 2229 is in a ring structure, the through hole of the pressing plate 2229 is opposite to the through hole of the electromagnetic ring when the pressing plate 2229 covers the opening, the driven shaft 223 is sequentially arranged in the through hole of the pressing plate 2229, the through hole of the electromagnetic ring and the through hole of the support 2228, the pressing plate 2229 is fixedly connected with the support 2228 through bolts, and the support 2228 is provided with two connecting ears which are fixedly connected with the shell 221 through bolts respectively.

[0062] Optionally, the shell 221 comprises a mounting cavity 2211 and a liquid cavity 2212, the speed regulating mechanism, the driven shaft 223 and the liquid pump are located in the mounting cavity 2211, the liquid outlet 2243 of the liquid pump is communicated with the liquid cavity 2212, and the liquid cavity 2212 is communicated with the cooling pipeline. In the embodiment, the mounting cavity 2211 and the liquid cavity 2212 are independent of each other, the liquid inlet 2242 of the liquid pump is communicated with the cooling liquid storage cavity, the liquid pump draws the cooling liquid in the cooling liquid storage cavity into the liquid cavity 2212, and then realizes circulating flow through the cooling pipeline.

[0063] Optionally, the rotor 211 further comprises a weight block 2112 fixedly arranged on the rotating shaft 2111, the cooling pipeline comprises a first flow channel 2121 and a second flow channel 2122, the first flow channel 2121 is arranged on the rotating shaft 2111 along the axial direction of the rotating shaft 2111, the second flow channel 2122 is arranged on the weight block 2112 along the radial direction of the weight block 2112, one end of the first flow channel 2121 is communicated with the liquid cavity 2212, the other end of the first flow channel 2121 is closed, one end of the second flow channel 2122 is communicated with the first flow channel 2121, and the other end of the second flow channel 2122 is opposite to the stator. In the embodiment, the cooling liquid in the liquid cavity 2212 flows to the second flow channel 2122 through the first flow channel 2121, the cooling liquid is high-pressured at this time, and then the cooling liquid is sprayed out from the other end of the second flow channel 2122 and finally sprayed on the stator, so that the stator coil can be cooled. An oil outlet is arranged on the motor shell, and the cooling liquid carrying the heat of the stator is returned to the cooling liquid outlet cavity 2212 through the oil outlet.

[0064] Optionally, the cooling pipeline further comprises an annular flow groove 2123 and a third flow channel 2124, the annular flow groove 2123 is arranged on the weight block 2112 and opposite to the rotating shaft 2111, the third flow channel 2124 is arranged on the rotating shaft 2111 along the radial direction of the rotating shaft 2111, one end of the third flow channel 2124 is communicated with the first flow channel 2121, the other end of the third flow channel 2124 is opposite to the annular flow groove 2123, and the annular flow groove 2123 is communicated with the second flow channel 2122. In the embodiment, the third flow channel 2124 is opposite to the annular flow groove 2123, and then the cooling liquid in the first flow channel 2121 flows into the annular flow groove 2123 through the third flow channel 2124, and then flows into the second flow channel 2122 from the annular flow groove 2123. Since the third flow channel 2124 cannot be guaranteed to be opposite to the second flow channel 2122 at all times when the weight block 2112 is assembled on the rotating shaft 2111, the annular flow groove 2123 is arranged, which does not require the third flow channel 2124 to be opposite to the second flow channel 2122 at all times, thereby reducing the assembly difficulty and improving the assembly efficiency.

[0065] Optionally, the flat fork 1 further comprises a second branch fork 12, the second branch fork 12 is arranged opposite to and spaced apart from the first branch fork 11, and the second branch fork 12 is integrated with a second condensing channel, the second condensing channel is arranged in a serpentine shape, a liquid inlet end of the second condensing channel is communicated with a liquid outlet end of the first condensing channel 112, and a liquid outlet end of the second condensing channel is communicated with a liquid inlet 2242 of the cooling system. In the embodiment, the driving wheel is arranged between the first branch fork 11 and the second branch fork 12 and rotationally cooperates with the first branch fork 11 and the second branch fork 12, respectively. The cooling liquid in the liquid outlet cavity 2212 flows into the first condensing channel 112 through the liquid pump first, then flows into the second condensing channel, and then flows into the cooling system of the motor 2, and finally flows back to the liquid outlet cavity 2212 from the cooling system of the motor 2. Under the action of the liquid pump, the cooling liquid flows in a reciprocating cycle. In the embodiment, the second condensing channel is added on the basis of the first condensing channel 112, which can improve the cooling effect of the cooling liquid and carry away more heat in the cooling liquid through air cooling.

[0066] Optionally, the condenser and the flat fork 1 integrated structure further comprises an oil passing pipe 13, one end of the oil passing pipe 13 is communicated with the liquid outlet end of the first condensing channel 112, and the other end of the oil passing pipe 13 is communicated with the liquid inlet end of the second condensing channel. In the embodiment, the oil passing pipe 13 communicates the first condensing channel 112 and the second condensing channel. The oil passing pipe 13 is not integrated in the pipeline of the flat fork 1. In other embodiments, the flat fork 1 further comprises a connecting piece, one end of the connecting piece is fixedly connected with the first branch fork 11, the other end of the connecting piece is fixedly connected with the second branch fork 12, and the oil passing pipe 13 is integrated in the connecting piece.

[0067] Optionally, the first prong 11 is recessed with a first condensing groove 1121, and the flat prong 1 further comprises a first cover plate 1122, which is fixedly connected with the first prong 11 and seals the first condensing groove 1121, and the first condensing groove 1121 and the first cover plate 1122 form a first condensing channel 112. The second prong 12 is recessed with a second condensing groove 1211, and the flat prong 1 further comprises a second cover plate 1212, which is fixedly connected with the second prong 122 and seals the second condensing groove 1211, and the second condensing groove 1211 and the second cover plate 1212 form a second condensing channel. In the embodiment, the first cover plate 1122 is fixedly connected with the first prong 11 by bolts, and the second cover plate 1212 is fixedly connected with the second prong 12 by bolts, which facilitates cleaning of the first condensing groove 1121 and the second condensing groove 1211, and prevents the first condensing channel 112 and the second condensing channel from being blocked by oil stains or particulate matter. In other embodiments, the first prong 11 and the first condensing channel 112 arranged inside the first prong 11 can be processed by additive manufacturing or casting manufacturing process. The second prong 12 and the second condensing channel arranged inside the second prong 12 can also be processed by additive manufacturing or casting manufacturing process.

[0068] Optionally, the first condensing channel 112 extends along the length direction of the first prong 11 or extends along the width direction of the first prong 11; and the second condensing channel extends along the length direction of the second prong 12 or extends along the width direction of the second prong 12. In the embodiment, the first prong 11 with the first condensing channel 112 extending along the length direction of the first prong 11 has stronger strength than the first prong 11 with the first condensing channel 112 extending along the width direction of the first prong 11. However, the cooling effect of the first prong 11 with the first condensing channel 112 extending along the length direction of the first prong 11 is not as good as that of the first prong 11 with the first condensing channel 112 extending along the width direction of the first prong 11.

[0069] Specifically, the second condensing groove 1211 is arranged in a staggered manner by baffles, thereby forming a serpentine flow channel. The second condensing groove 1211 is directly recessed on the second prong 12 to form a serpentine flow channel.

[0070] Optionally, the first prong 11 is recessed with a liquid storage groove 1111; and the flat prong 1 further comprises a third cover plate 1112, which is fixedly connected with the first prong 11 and seals the liquid storage groove 1111, and the liquid storage groove 1111 and the third cover plate 1112 form a liquid storage cavity 111. In the embodiment, the third cover plate 1112 is fixedly connected with the first prong 11 by bolts, which facilitates regular cleaning of the liquid storage cavity 111. In other embodiments, the first prong 11 and the liquid storage cavity 111 can also be processed by additive manufacturing or casting manufacturing process.

[0071] Optionally, the first prong 11 is provided with a filling hole 113, and the filling hole 113 is communicated with the liquid storage cavity 111. In the embodiment, when the cooling liquid in the liquid storage cavity 111 is insufficient, the cooling liquid is supplemented into the liquid storage cavity 111 through the filling hole 113.

[0072] Optionally, the first prong 11 is provided with an observation hole 114, and the observation hole 114 is communicated with the liquid storage cavity 111; the flat prong 1 further comprises a transparent plate, and the transparent plate seals the observation hole 114. In the embodiment, the liquid level of the cooling liquid in the liquid storage cavity 111 can be observed through the transparent plate, and then it is determined whether the cooling liquid needs to be added in the liquid storage cavity 111.

[0073] Optionally, the liquid storage cavity 111 is provided with a plurality of liquid separation plates 115 along the length direction of the first prong 11, and the plurality of liquid separation plates 115 divides the liquid storage cavity 111 into a plurality of separated cavities, and the plurality of separated cavities are communicated with each other. In the embodiment, the plurality of liquid separation plates 115 are staggered with each other, and the separated cavities are communicated with each other, which prevents abnormal sound caused by water hammer effect during the operation of the cooling liquid, and does not affect the flow of the cooling liquid between the plurality of separated cavities.

[0074] Optionally, the first prong 11 is provided with a gas permeation hole 116, and the gas permeation hole 116 is communicated with the liquid storage cavity 111; the flat prong 1 further comprises a waterproof gas permeation valve, and the waterproof gas permeation valve seals the gas permeation hole 116. In the embodiment, the gas in the liquid storage cavity 111 can be discharged, and then the internal pressure of the liquid storage cavity 111 is prevented from being too large. Meanwhile, the water vapor and the like in the outside can be prevented from entering into the liquid storage cavity 111, and then the cooling liquid in the liquid storage cavity 111 is prevented from being polluted.

[0075] Optionally, the electric vehicle further comprises a wheel hub 3 and a transmission mechanism, the wheel hub 3 is rotationally matched with the flat prong 1, and the rotating shaft 2111 of the motor 2 drives the wheel hub 3 to rotate through the transmission mechanism. In the embodiment, the transmission mechanism comprises a first gear, a second gear and a chain, the first gear is sleeved on the rotating shaft 2111 and is fixedly connected with the rotating shaft 2111, the second gear is coaxially fixedly connected with the wheel hub 3, and the first gear and the second gear simultaneously support the chain.

[0076] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the implementation modes are not enumerated. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An electric vehicle, characterized by The utility model relates to a flat fork (1) comprising: a first prong (11) integrated with a liquid storage cavity (111) and a first condensing channel (112), the first prong (11) is concave with a first condensing groove (1121), the flat fork (1) further comprises a first cover plate (1122) fixedly connected with the first prong (11) and closing the first condensing groove (1121), the first condensing groove (1121) and the first cover plate (1122) surround the first condensing channel (112), the first condensing channel (112) is arranged in a serpentine shape, the liquid inlet end of the first condensing channel (112) is communicated with the liquid outlet of the liquid storage cavity (111); a motor (2) fixedly arranged on the flat fork (1), the motor (2) comprising: a motor body (21) comprising a motor shell, a rotor (211) and a stator arranged in the motor shell, the stator is fixedly connected with the inner wall of the motor shell, the rotor (211) is arranged in the stator and rotationally matched with the motor shell, the rotor (211) is provided with a cooling pipeline, the liquid inlet end of the cooling pipeline is located outside the motor shell, and the liquid outlet end of the cooling pipeline is located inside the motor shell and opposite to the stator; a regulator (22) comprising a housing (221), a speed regulating mechanism arranged in the housing (221), a driven shaft (223) and a liquid pump, the housing (221) is fixedly connected with the motor shell, the driven shaft (223) is rotationally arranged in the housing (221), the rotating shaft (2111) of the rotor (211) extends into the housing (221) and drives the speed regulating mechanism to act, the speed regulating mechanism is configured to drive the driven shaft (223) to rotate at different rotating speeds, the driven shaft (223) drives the liquid pump to work, the cooling liquid in the liquid storage cavity (111) enters the liquid pump through the first condensing channel (112), the liquid pump pumps the cooling liquid entering the liquid pump into the cooling pipeline, the liquid inlet of the liquid storage cavity (111) is communicated with the liquid outlet of the motor shell; the housing (221) comprises a mounting cavity (2211) and a liquid cavity (2212), the speed regulating mechanism, the driven shaft (223) and the liquid pump are located in the mounting cavity (2211), the liquid outlet of the liquid pump is communicated with the liquid cavity (2212), and the liquid cavity (2212) is communicated with the cooling pipeline; a hub (3) rotationally matched with the flat fork (1), and a transmission mechanism, the rotating shaft (2111) of the motor (2) drives the hub (3) to rotate through the transmission mechanism. ​ 2. The electric vehicle according to claim 1, characterized in that The speed regulating mechanism comprises at least two driving gears (2221), at least two driven gears (2222), a shaft sleeve (2223) and a driving assembly, the at least two driving gears (2221) are spaced and sleeved on the rotating shaft (2111) and fixedly connected with the rotating shaft (2111), the at least two driven gears (2222) are spaced and sleeved on the shaft sleeve (2223), the axis of the driven shaft (223) is parallel to the axis of the rotating shaft (2111) and is spaced from the rotating shaft (2111), the shaft sleeve (2223) is sleeved on the driven shaft (223), the shaft sleeve (2223) is relatively fixed around the axis of the driven shaft (223) and is slidingly fitted along the axis of the driven shaft (223), the number of teeth of the driving gears (2221) are different, the driving assembly drives the shaft sleeve (2223) to move along the axis of the driven shaft (223) and makes one of the at least two driving gears (2221) engage with one of the at least two driven gears (2222).

3. The electric vehicle of claim 2, wherein, The driving gears (2221) are provided in two, the driven gears (2222) are provided in two, the two driving gears (2221) and the two driven gears (2222) correspond one by one and can engage with each other; The driving assembly comprises a driving piece (2224), a first driven piece (2225) and a second driven piece (2226), the driving piece (2224) is fixedly arranged on the shell (221) and slidingly fitted with the shaft sleeve (2223), the first driven piece (2225) and the second driven piece (2226) are fixedly connected with the shaft sleeve (2223), when the driving piece (2224) drives the first driven piece (2225) to abut against the driving piece (2224), one of the two driving gears (2221) engages with one of the two driven gears (2222), when the driving piece (2224) drives the second driven piece (2226) to abut against the driving piece (2224), the other of the two driving gears (2221) engages with the other of the two driven gears (2222).

4. The electric vehicle of claim 3, wherein, The driving assembly further comprises a fixing frame (2227) fixedly connected with the shell (221), and the driving member (2224) is fixedly arranged on the fixing frame (2227), the driving member (2224) is an electromagnetic ring, the first driven member (2225) and the second driven member (2226) are magnetic rings respectively, the driving member (2224), the first driven member (2225) and the second driven member (2226) are sleeved on the shaft sleeve (2223), the first driven member (2225) and the second driven member (2226) are located on two sides of the driving member (2224) along the axis of the driven shaft (223), the distance between the first driven member (2225) and the second driven member (2226) is greater than the width of the driving member (2224) along the axis direction of the driven shaft (223), and the magnetic poles of the opposite ends of the first driven member (2225) and the second driven member (2226) are the same.

5. The electric vehicle of claim 1, wherein, The rotor (211) further comprises a weight block (2112) fixedly arranged on the rotating shaft (2111); The cooling pipeline comprises a first flow channel (2121) and a second flow channel (2122), the first flow channel (2121) is arranged on the rotating shaft (2111) along the axis direction of the rotating shaft (2111), the second flow channel (2122) is arranged on the weight block (2112) along the radial direction of the weight block (2112), one end of the first flow channel (2121) is in communication with the liquid cavity (2212), the other end of the first flow channel (2121) is closed, one end of the second flow channel (2122) is in communication with the first flow channel (2121), and the other end of the second flow channel (2122) is opposite to the stator.

6. The electric vehicle of claim 5, wherein, The cooling pipeline further comprises an annular flow groove (2123) and a third flow channel (2124), the annular flow groove (2123) is arranged on the weight block (2112) and opposite to the rotating shaft (2111), and the third flow channel (2124) is arranged on the rotating shaft (2111) along the radial direction of the rotating shaft (2111), one end of the third flow channel (2124) is in communication with the first flow channel (2121), the other end of the third flow channel (2124) is opposite to the annular flow groove (2123), and the annular flow groove (2123) is in communication with the second flow channel (2122).

7. The electric vehicle of claim 1, wherein, The flat fork (1) further includes a second fork (12), the second fork (12) being opposite to and spaced from the first fork (11), the motor (2) being fixedly connected to the first fork (11) and the second fork (12) and being located between the first fork (11) and the second fork (12), the second fork (12) being integrated with a second condensation channel, the second condensation channel being arranged in a serpentine shape, the liquid inlet end of the second condensation channel being connected to the liquid outlet end of the first condensation channel (112), the liquid outlet end of the second condensation channel being connected to the liquid inlet of the liquid pump, the wheel hub (3) being arranged between the first fork (11) and the second fork (12), and being rotatably matched with the first fork (11) and the second fork (12) respectively.

8. The electric vehicle of claim 1, wherein, The liquid storage cavity (111) is provided with a plurality of liquid partition plates (115) at intervals along the length direction of the first fork (11); the plurality of liquid partition plates (115) divide the liquid storage cavity (111) into a plurality of partition cavities, and the plurality of partition cavities are interconnected.

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