CN111886178B - Saddle-ride type electric vehicle - Google Patents
Saddle-ride type electric vehicle Download PDFInfo
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- CN111886178B CN111886178B CN201880091295.4A CN201880091295A CN111886178B CN 111886178 B CN111886178 B CN 111886178B CN 201880091295 A CN201880091295 A CN 201880091295A CN 111886178 B CN111886178 B CN 111886178B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/02—Motorcycles characterised by position of motor or engine with engine between front and rear wheels
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Abstract
The saddle-ride type electric vehicle is provided with: a motor unit having an electric motor; a battery that supplies electric power to the motor unit; and a control unit that is connected to the motor unit via an electrical connection member and performs drive control of the motor unit. The control unit includes a first portion that overlaps with the motor unit when the vehicle is viewed from the side, and a second portion that does not overlap with the motor unit, and the electrical connection member is provided to connect the first portion with the motor unit.
Description
Technical Field
The present invention relates to a saddle-ride type electric vehicle.
Background
As a saddle-ride type electric vehicle using an electric motor as a travel drive source, there is known a saddle-ride type electric vehicle equipped with a battery that supplies electric power to the electric motor and a control unit that controls the electric power supplied from the battery to the electric motor (for example, patent document 1).
Documents of the prior art
Patent literature
Patent document 1: international publication No. 2012/063291
Disclosure of Invention
Problems to be solved by the invention
A control unit that controls the electric power supplied from the battery to the electric motor is connected to the electric motor via an electrical connection member. The length of the electrical connection member depends on the distance between the electric motor and the control unit, and if the electrical connection member is long, the cost and weight may increase.
The invention aims to provide a saddle-ride type electric vehicle capable of further shortening the length of an electric connection member.
Means for solving the problems
According to the present invention, there is provided a saddle-ride type electric vehicle including:
front wheels and rear wheels;
a head pipe supporting a steering mechanism that steers the front wheels;
a main frame connected to the head pipe and extending in a vehicle front-rear direction;
a motor unit having an electric motor that outputs a rotational driving force of the rear wheel;
a battery that supplies electric power to the motor unit; and
a control unit that is connected to the motor unit via an electrical connection member and performs drive control of the motor unit,
the motor unit and the battery are supported by the main frame between the front wheel and the rear wheel,
the control unit includes a first portion that overlaps with the motor unit when the vehicle is viewed from the side and a second portion that does not overlap with the motor unit,
the electrical connection member connects the first portion with the motor unit,
the motor unit has an opposed surface opposed to the first portion,
The first portion is disposed on the vehicle width direction outer side of the facing surface.
Further, according to the present invention, there is provided a saddle-ride type electric vehicle including:
front wheels and rear wheels;
a head pipe supporting a steering mechanism that steers the front wheels;
a main frame connected to the head pipe and extending in a vehicle front-rear direction;
a motor unit having an electric motor that outputs a rotational driving force of the rear wheel;
a battery that supplies electric power to the motor unit; and
a control unit that is connected to the motor unit via an electrical connection member and performs drive control of the motor unit,
the motor unit and the battery are supported on the main frame between the front wheel and the rear wheel,
the control unit includes a first portion that overlaps with the motor unit when the vehicle is viewed from the side and a second portion that does not overlap with the motor unit,
the electrical connection member connects the first portion with the motor unit,
the motor unit includes:
a motor housing portion that houses the electric motor; and
a gear housing portion that protrudes outward in the vehicle width direction than the motor housing portion and houses a reduction gear that reduces the rotational driving force of the electric motor,
The control unit is disposed on a vehicle front-rear direction front side of the gear housing portion, and overlaps the motor housing portion when the vehicle is viewed from the side.
Effects of the invention
According to the present invention, it is possible to provide a saddle-ride type electric vehicle capable of further shortening the length of an electric connection member connecting an electric motor and a control unit.
Drawings
Fig. 1 is a left side view of a saddle-ride type electric vehicle according to an embodiment.
Fig. 2 is a sectional view taken along line I-I of fig. 1, and is a view with a part of the structure omitted.
Fig. 3 is a sectional view taken along line II-II of fig. 1, and is a view with a part of the structure omitted.
Fig. 4 is a perspective view of a motor unit according to an embodiment.
Detailed Description
A saddle-ride type vehicle according to an embodiment of the present invention will be described with reference to the drawings. In each figure, an arrow X, Y, Z indicates directions orthogonal to each other, an X direction indicates a front-rear direction of the straddle-type vehicle, a Y direction indicates a vehicle width direction (left-right direction) of the straddle-type vehicle, and a Z direction indicates a vertical direction. Hereinafter, the front or rear in the front-rear direction of the straddle-type vehicle may be simply referred to as the front or rear, and the inner side or outer side in the vehicle width direction (left-right direction) of the straddle-type vehicle may be simply referred to as the inner side or outer side. In the case of a pair of left and right members, either one of the left and right members may be described, and the other member is not shown or not described.
< brief summary of straddle-type vehicle >
Fig. 1 is a left side view of a saddle-ride type electric vehicle 1 according to an embodiment of the present invention. This figure is a schematic view mainly showing a main part of the saddle-ride type electric vehicle 1. Hereinafter, the saddle-ride type electric vehicle 1 may be referred to as a vehicle 1.
As the vehicle body frame 10, the vehicle 1 includes a head pipe 11 provided at a front portion of the vehicle, a main frame 12 connected to the head pipe 11 and extending in the front-rear direction, a lower frame 13 extending in the front-rear direction at a position lower than the main frame 12, and a seat frame 14 extending rearward from the main frame 12. In addition, the rear end portions of the main frame 12 and the lower frame 13 are connected to each other.
Reference is made to fig. 2 together with fig. 1. Fig. 2 is a sectional view taken along line I-I of fig. 1, and is a view with a part of the structure omitted. The main frame 12 of the present embodiment includes a left frame portion 121 extending from the head pipe 11 through the left side of the vehicle 1 and a right frame portion 122 extending from the head pipe 11 through the right side of the vehicle 1, which are formed to be separated in the vehicle width direction (left and right). The left and right side frame portions 121, 122 include front and rear frame portions 123, 124, respectively.
The front frame portion 123 of the present embodiment includes an upper portion 123a extending diagonally downward and rearward of the vehicle from the upper portion of the head pipe 11 and a lower portion 123b extending diagonally downward and rearward of the vehicle from the lower portion of the head pipe 11. The upper portion 123a and the lower portion 123b are connected to the rear end 126 of the front frame portion 123, and are also connected to a point in the middle. With such a configuration, the main frame 12 can be made lightweight and the rigidity thereof can be improved.
Further, in the present embodiment, the main frame 12 is divided left and right from the head pipe 11 and extends diagonally downward and rearward of the vehicle, and the main frame 12 is divided throughout the entire area to be formed as the left side frame portion 121 and the right side frame portion 122. However, a configuration in which a single frame portion extends rearward from the head pipe 11 and then branches into the left and right frame portions 121 and 122, or a configuration in which the frame portion does not branch, may be employed. In the present embodiment, the upper portion 123a from the upper portion of the head pipe 11 and the lower portion 123b from the lower portion of the front frame portion 123 extend rearward while being separated from each other in the left-right direction, but a structure may be employed in which the upper portion and the lower portion extend rearward from the head pipe 11 one by one in the left-right direction.
The left and right rear frame portions 124 are formed to extend vertically from rear end portions 126 of the front frame portion 123, respectively, and support the rear suspension 21 at upper portions thereof. The rear frame portion 124 has a pivot shaft 125 below a rear end portion 126 of the front frame portion 123, the pivot shaft supporting a rear swing arm 19 described later. Further, the rear frame portion 124 is connected at its lower end to the rear end of the lower frame 13. The front frame part 123 and the rear frame part 124 may be formed integrally, or may be formed separately and joined by metallurgical joining such as welding, mechanical joining such as bolt fastening, or the like.
The lower frame 13 is provided to extend in the vehicle front-rear direction at a position lower than the main frame 12. The lower frame 13 extends downward from the lower portion of the main frame, extends rearward from the lower end thereof, and is connected to the lower end of the rear frame portion 124. In addition, the lower frame 13 includes a left lower frame portion 131 and a right lower frame portion 132.
In the present embodiment, the lower frame 13 extends downward from the lower portion of the main frame 12, but may also extend downward from the head pipe 11. The lower frame 13 is formed to be entirely divided into the left frame portion 121 and the right frame portion 122, but may be formed to extend downward from the head pipe 11 or the main frame 12 by one frame and then to be branched into the left frame portion 121 and the right frame portion 122.
The pair of left and right seat frames 14 are provided to extend rearward from the left and right side frame portions 121 and 122 of the main frame 12, respectively, and support the seat 4. Further, a sub-frame 15 connected to the left and right frame portions 121 and 122 and the pair of left and right seat frames 14 is provided below the pair of left and right seat frames 14.
The head pipe 11 supports a steering mechanism 18 that steers the front wheels FW. The steering mechanism 18 includes a steering rod 181 rotatably supported on the head pipe 11, and a top bridge 182 and a bottom bridge 183 are respectively attached to an upper end portion and a lower end portion thereof. A steering member 184 for a driver to steer the front wheels FW is provided on the top bridge 182. The pair of left and right front forks 185 are supported by the top bridge 182 and the bottom bridge 183. The front fork 185 extends obliquely downward and forward of the vehicle, and rotatably supports a front wheel at a lower end thereof.
The rear swing arm 19 is supported at its front end portion to be swingable by a pivot shaft 125 provided on the rear frame portion 124. The rear wheel RW is rotatably supported by a rear end portion of the rear swing arm 19, and is rotationally driven by a chain 23 wound around a drive sprocket 323 of the motor unit 30 and a driven sprocket 22 of the rear wheel RW. The rear swing arm 19 has a support portion 191 at its upper portion that supports the rear suspension 21, and the swing thereof is damped by the rear suspension 21.
Fig. 4 is referred to together with fig. 1 and 2. Fig. 4 is a perspective view of the motor unit 30. The motor unit 30 includes an electric motor 31 that outputs a rotational driving force that drives the sprocket 323. In addition, the electric motor 31 is accommodated in the motor accommodating portion 31 a. In the case of the present embodiment, the motor housing portion 31a has a substantially cylindrical shape, and is disposed such that the bottom surface thereof is substantially parallel to the XZ plane when mounted.
The motor unit 30 includes a speed reducer 32, and the speed reducer 32 is protruded from the motor housing portion 31a in the vehicle width direction and reduces the rotational driving force of the electric motor 31. The speed reducer 32 includes a housing 321, a speed reduction gear (not shown) that reduces the rotation of the motor shaft 311, and an output shaft 322 that outputs a driving force reduced by the speed reduction gear (not shown). In the present embodiment, the output shaft 322 is located at the vehicle rear side with respect to the motor shaft 311. A drive sprocket 323 is attached to the output shaft 322 of the reduction gear unit 32. The output shaft 322 is located forward of the pivot shaft 125, and is disposed so that the center of the rear wheel RW, the pivot shaft 125, and the output shaft 322 are located on the same straight line (on the two-dot chain line L).
An oil pan 33 is formed at the bottom of the motor unit 30, and oil stored in the oil pan 33 is sucked and discharged by an oil pump 34 to lubricate and cool the inside of the motor unit 30. The oil supplied to each part in the motor unit 30 is returned to the oil pan 33 by natural dripping or the like.
The motor unit 30 includes a breather chamber 37 in an upper portion thereof, which communicates the inside and the outside of the motor unit 30 to separate gas from liquid. The motor unit 30 includes an oil filter 36, and purifies oil circulating in the motor unit 30.
The battery 16 stores electric power supplied to the motor unit 30. The control unit 40 uses the battery 16 as a power source, and performs supply control (drive control) of electric power to the motor unit 30, particularly, the electric motor 31, in accordance with an accelerator operation by the driver or the like. The motor unit 30 and the control unit 40 are connected by a bus bar 42 as an electrical connection member, and electric power is supplied from the control unit 40 to the motor unit 30 via the bus bar 42. In the present embodiment, the bus bar is used as the electrical connection member, but may be another type of electrical connection member capable of transmitting an electrical signal, such as a flexible wire harness. Although the motor unit 30 and the control unit 40 generate heat by driving, they are cooled by the heat exchanger 24 and the cooling medium circulating through them, and the temperature is suppressed from becoming high.
< arrangement Structure of Motor Unit and control Unit >
Refer to fig. 1 to 3. Fig. 3 is a sectional view taken along line II-II of fig. 1, and is a view with a part of the structure omitted.
In the case of the present embodiment, the main frame 12 and the lower frame 13 mainly define the housing portion 10a of the battery 16, the motor unit 30, and the control unit 40. In the present embodiment, the left side of the accommodating portion 10a in the vehicle width direction is defined by annularly connecting the head pipe 11, the left frame portion 121, and the left lower frame portion 131, and the right side is similarly defined by annularly connecting the head pipe 11, the right frame portion 122, and the right lower frame portion 132. The protection performance of the side surfaces of the battery 16, the motor unit 30, and the control unit 40 can be improved by the ring of the frame. The lower limit of the accommodation portion 10a in the vertical direction is defined by the lower frame 13, and the upper side is opened as the vehicle body frame 10, while being defined by the cover member 17.
In the housing portion 10a, the battery 16, the motor unit 30, and the control unit 40 are housed. The battery 16 is disposed between the left and right side frame portions 121 and 122 of the front frame portion 123 in a plan view of the vehicle, and is supported by the left and right side frame portions 121 and 122 via a fixing structure, not shown. Further, only the battery 16 is covered with the cover member 17, and is disposed to protrude above the front frame portion 123. Battery 16 can be mounted with a larger battery by projecting it above front frame portion 123.
In the present embodiment, the following arrangement structure is adopted in the housing portion 10a in order to further shorten the bus bar 42 electrical connection member that connects the motor unit 30 and the control unit 40 and supplies power from the control unit 40 to the motor unit 30. That is, in the present embodiment, the control unit 40 includes a portion 40a that overlaps the motor unit 30 when the vehicle is viewed from the side and a portion 40b that does not overlap the motor unit 30, and the bus bar 42 connects the portion 40a and the motor unit 30. The portion 40a overlaps the motor unit 30 when the vehicle is viewed from the side, and therefore can be disposed close to each other. Thus, the bus bar 42 can be further shortened.
In the case of the present embodiment, the bus bar connecting portion 38 on the motor unit 30 side is provided in a range where the upper portion of the motor unit 30 overlaps with the portion 40a in the vehicle width direction. That is, the bus bar connecting portion 38 and the connecting portion 48 on the control unit 40 side are provided at positions where the portion 40a overlaps the motor unit 30 when the vehicle is viewed from the side. Therefore, the distance in the front-rear direction between the bus bar connecting portion 38 and the connecting portion 48 can be shortened, and the bus bar 42 can be shortened.
In the present embodiment, the control unit 40 is disposed on the left side of the motor unit 30 at a position where the motor unit 30 and the control unit 40 overlap each other. Since the chain 23 is wound around the drive sprocket 323 on the left side of the vehicle 1, the motor unit 30 is disposed so as to be offset to the left in the vehicle width direction. Since the control unit 40 is located further to the left of the motor unit 30 disposed offset to the left in the vehicle width direction, the portion 40a is disposed close to the motor unit 30 in a portion overlapping when the vehicle is viewed from the side. Thus, the bus bar 42 can be shortened.
Further, in the case of the present embodiment, the motor housing portion 31a of the motor unit 30 is disposed so as to overlap the portion 40a when the vehicle is viewed from the side, and the bus bar connecting portion 38 is provided at the upper portion of the motor housing portion 31 a. The bus bar 42 needs to be connected to the motor wiring inside the motor unit 30, but by overlapping the portion 40a and the motor housing portion 31a when the vehicle is viewed from the side, the bus bar can be shortened, and the motor wiring inside the motor unit 30 can be simplified.
The bus bar connecting portion 38 may be disposed at a position overlapping the portion 40a in the front-rear direction, such as an upper portion of the speed reducer portion 32. In the case of the present embodiment, since the motor unit 30 and the control unit 40 are disposed close to each other in the front-rear direction, the bus bar 42 can be shortened even in the case where the bus bar connecting portion 38 is disposed at a position overlapping the portion 40a in the front-rear direction.
In the present embodiment, the bus bar 42 is provided above the motor unit 30 and the control unit 40, and these are fixed to each other. However, the following structure may be adopted: on the surfaces where the motor unit 30 and the control unit 40 overlap each other, engaging portions including electrical connecting members capable of transmitting electrical signals are provided at positions overlapping each other at the time of assembly, and are engaged with each other in the assembled state.
A resolver (resolver)35 for detecting the rotation angle of the electric motor 31 is provided inside the motor unit 30, and a motor-side connection terminal 351 is provided on a surface facing the front of the vehicle. A control unit side connecting portion 451 is provided on a surface of the portion 40b of the control unit 40 facing the motor unit 30. The motor-side connection terminal 351 and the control unit-side connection portion 451 are connected by a wire harness 352 capable of transmitting an electric signal. The motor-side connection terminal 351 and the control-unit-side connection terminal 451 may be disposed at positions above the motor unit 30 and the control unit 40, respectively.
In the present embodiment, the portion 40a overlaps with a portion on the front side of the motor unit 30 when the vehicle is viewed from the side, but may overlap with the rear side, the upper side, or the lower side of the motor unit 30 when the vehicle is viewed from the side. In the present embodiment, the portion 40a is disposed on the left side of the portion where the motor unit 30 overlaps when viewed from the side of the vehicle, but may be disposed on the right side. In these aspects, the length of the electrical connection member can be shortened.
In the present embodiment, since a part of the control unit 40 overlaps the motor unit 30 when the vehicle is viewed from the side, the arrangement space of the battery 16 can be secured more largely in the vehicle front-rear direction or the vertical direction. Therefore, a battery with a larger capacity can be mounted.
In the case of the present embodiment, the motor unit 30 is disposed in front of the rear frame portion 124 in the housing portion 10 a. The control unit 40 is disposed such that its front end is located forward of the front end of the motor unit 30 and its upper end is located below the upper end of the motor unit 30. With such an arrangement, the motor unit 30 and the control unit 40 are collectively arranged in the lower region in the housing portion 10a, and therefore, the portion above them can be secured as a housing space for the battery 16.
In the case of the present embodiment, the portion 40a is disposed on the front side of the speed reducer section 32 so as to overlap the motor housing section 31a when the vehicle is viewed from the side. Therefore, the space in front of the speed reducer 32 can be effectively used, and the storage space for the battery 16 can be further secured.
As shown in fig. 2, the motor unit 30 and the control unit 40 are disposed between the left and right side frame portions 121 and 122 in the Y direction, i.e., within the maximum width W of both, when the vehicle is viewed in plan. With this arrangement, it is possible to suppress the components such as the motor unit 30 and the control unit 40 from protruding outward in the vehicle width direction, and to arrange them in a well-balanced manner.
In the present embodiment, the motor housing portion 31a and the control unit 40 are arranged so as not to overlap each other in a plan view of the vehicle. The motor storage 31a and the control unit 40 are not included in the overlapping portions of the vehicle width direction in the arrangement, but are arranged in parallel in the vehicle width direction, with the motor storage 31a on the right side and the control unit 40 on the left side. As such an arrangement, for example, as shown in fig. 2, when the maximum width W of the left and right side frame portions 121 and 122 is halved in the Y direction, the motor accommodating portion 31a may be arranged such that the surface a facing the control unit 40 is located within a range of W/2 on the left side. By arranging the motor unit 30 such that the surface a is located within the range of W/2 on the left side, the control unit 40 is arranged further outside in the vehicle width direction, and traveling wind and the like are made easy to contact, whereby the cooling efficiency of the control unit 40 can be improved.
In the case of the present embodiment, since the portion 40b that does not overlap the motor unit 30 when the vehicle is viewed from the side is disposed forward of the motor unit 30, the portion 40b is disposed so that traveling wind and the like easily contact three surfaces of the front surface and the two side surfaces. Therefore, the area contacted by the traveling wind and the like can be increased, and the cooling efficiency of the control unit 40 can be further improved.
Next, the mounting structure of the motor unit 30 and the control unit 40 will be further described. The motor unit 30 is supported by a pair of left and right upper mounting portions 128 and a pair of lower mounting portions 129 formed on the rear frame portion 124 and a pair of left and right mounting portions 133 formed on the lower frame 13, respectively. Since the motor unit 30 is supported by three points on the vehicle body frame 10 having high rigidity, the influence of vehicle body vibration and the like can be suppressed.
On the other hand, the control unit 40 is supported together with the motor unit by the mounting portion 133 of the lower frame 13, and is fixed to the mounting portion 134 located above the mounting portion 133 of the left lower frame portion 131 via a fixing structure not shown.
Fig. 4 is referred to together with fig. 1 and 3. Fig. 4 is a perspective view of the motor unit 30. The motor unit 30 has through holes 301, 302, and 303 for mounting to the upper mounting portion 128, the lower mounting portion 129, and the mounting portion 133, respectively. On the other hand, the control unit 40 has a through hole 403 at a position overlapping with the through hole 303 when the vehicle is viewed from the side when assembled.
The fixing member 501 can be attached to the upper attachment portion 128 so as to cross the left and right side frame portions 121 and 122 in the vehicle width direction. The motor unit 30 is fixed to the rear frame portion 124 by attaching the fixing member 501 to the upper attachment portion 128 in a state where the through hole 301 penetrates. With the same structure, the motor unit 30 is fixed to the rear frame portion 124 at the lower mounting portion 129 by the fixing member 502.
In the mounting portion 133, the fixing member 503 is fixed to the mounting portion 133 in a state where the through hole 303 and the through hole 403 are penetrated, whereby the motor unit 30 and the control unit 40 are fixed to the lower frame 13.
As described above, by fixing the motor unit 30 and the control unit 40 to the lower frame 13 through the fixing member 503, the number of fixing members can be reduced, and the relative phase shift between the motor unit 30 and the control unit 40 in the front-rear direction and the vertical direction can be suppressed. Therefore, the motor unit 30 and the control unit 40 can be connected to each other by the bus bar 42 without considering the swing.
As an example of the mounting structure, for example, a bracket may be provided extending from the vehicle body frame 10 toward the motor unit 30 and the control unit 40, and various fixing structures such as bolt fastening may be employed for the bracket.
In the present embodiment, the heat exchanger 24 is also fixed to the lower frame, in addition to the motor unit 30 and the control unit 40. Therefore, the heat exchanger 24, the motor unit 30, and the control unit 40 can be integrally mounted to the main frame 12 in a state in which they are fixed to the lower frame 13, and therefore, the assembling property and the maintenance property can be improved.
The control unit 40 has a box-shaped housing member, and includes a drive circuit board 45 for supplying electric power to the electric motor and a control circuit board 46 for transmitting a control signal to the drive circuit board 45 inside the housing member. The drive circuit board 45 and the control circuit board 46 are arranged in the direction of a plane in which the front-back direction and the vertical direction are horizontal directions and the vehicle width direction is a normal direction. Therefore, the entire control unit 40 is configured to be thin in the vehicle width direction. The drive circuit board 45 and the control circuit board 46 are arranged in parallel in the vehicle width direction, and in the present embodiment, the drive circuit board 45 is arranged at a position on the vehicle width direction outer side (left side) of the control circuit board 46. The temperature of the driver circuit board 45 is more likely to rise than that of the control circuit board 46, and the driver circuit board 45 is disposed on the outer side, whereby the driving air can be used to efficiently cool the driver circuit board 45.
In the motor unit 30, the oil pump 34 is disposed below the speed reducer 32. Therefore, no component protruding outward in the vehicle width direction from the motor housing portion 31a is disposed in the front side of the speed reducer portion 32 of the motor unit 30. Therefore, the control unit 40 can be disposed on the front side of the speed reducer section 32 so as to overlap in the vehicle width direction.
< Structure of Cooling Circuit >
The structure of the cooling circuit of the present embodiment will be described with reference to fig. 1 and 2. The heat exchanger 24 according to the present embodiment is a water cooler (radiator), and the cooling medium is cooling water (coolant).
The cooling medium cooled by the heat exchanger 24 passes through the first tubular member 251 and circulates into the motor unit 30. Here, the first tubular member 251 is connected to the heat exchanger 24, extends downward along the lower frame 13, and is connected to the upper portion of the motor unit 30 after passing between the motor unit 30 and the control unit 40. A hole-shaped water jacket (not shown) through which a cooling medium can pass is formed inside the motor unit 30, for example, and the cooling medium cools the inside of the motor unit 30 while circulating inside the water jacket.
The cooling medium circulated inside the motor unit 30 passes through the inside of the second tubular member 252 to circulate to the heat exchanger 24. Here, the second tubular member 252 is connected to the vicinity of the oil pan 33, extends along the lower frame 13, and is connected to the heat exchanger. That is, the circulation path 25 includes the first tubular member 251, the inside of the motor unit, and the second tubular member 252, and the cooling medium passes through the circulation path 25 and circulates in the order of the heat exchanger 24, the control unit 40, the motor unit 30, and the heat exchanger 24.
Since the first tubular member 251 is inserted between the motor unit 30 and the control unit 40, both can be cooled, and the cooling efficiency can be improved. Further, since the heat exchanger 24, the control unit 40, and the motor unit 30 are disposed close to each other, the cooling path can be shortened. In the present embodiment, the heat exchanger 24 can reduce heat concentration caused by the motor unit 30 and the control unit 40 being disposed close to each other.
As the first tubular member 251 and the second tubular member 252, for example, a hose, a tubular metal member, or the like can be used. The heat exchanger 24 may be an oil cooler, and when an oil cooler is used, the oil of the cooling medium can also serve as lubrication for the inside of the motor unit 30.
< effects of the embodiment >
Since the motor unit 30 and the portion 40a overlapping the motor unit 30 when the vehicle is viewed from the side are connected via the bus bar 42, the bus bar 42 can be shortened, and cost reduction and weight reduction can be achieved. Further, since the portion 40a of the control unit 40 overlaps with the motor unit 30 when the vehicle is viewed from the side, the arrangement space of the battery 16 can be secured more largely in the vehicle front-rear direction or the vertical direction than these portions. Thus, a saddle-ride type electric vehicle capable of more securing the accommodation space of the battery 16 can be provided.
< summary of the embodiments >
The above embodiment discloses at least the following vehicle.
1. The saddle-ride type electric vehicle (for example, 1) of the above embodiment includes:
front wheels (e.g., FW) and rear wheels (e.g., RW);
a head pipe (e.g., 11) that supports a steering mechanism (e.g., 18) that steers the front wheels;
a main frame (e.g., 12) connected to the head pipe and extending in a vehicle front-rear direction;
a motor unit (e.g., 30) having an electric motor (e.g., 31) that outputs a rotational driving force of the rear wheel;
a battery (e.g., 16) that supplies electric power to the motor unit; and
a control unit (e.g., 40) that is connected to the motor unit via an electrical connection member and performs drive control of the motor unit,
the motor unit and the battery are supported by the main frame between the front wheel and the rear wheel,
the control unit includes a first portion (e.g. 40a) that overlaps the motor unit when the vehicle is viewed from the side and a second portion (e.g. 40b) that does not overlap the motor unit,
the electrical connection member connects the first portion with the motor unit.
According to this embodiment, since the motor unit and the first portion that overlaps with the motor unit when the vehicle is viewed from the side are connected via the connecting member, the connecting member can be shortened. Therefore, cost reduction and weight reduction can be achieved. Further, since a part of the control unit overlaps with the motor unit when the vehicle is viewed from the side, a space for disposing the battery can be secured in a vehicle front-rear direction or a vertical direction with respect to the motor unit. Thus, a saddle-ride type electric vehicle capable of more securing the accommodation space of the battery can be provided.
2. In the saddle-ride type electric vehicle of the above embodiment, the motor unit includes:
a motor housing section (e.g., 31a) that houses the electric motor; and
a gear housing section (e.g., 321) that protrudes further outward in the vehicle width direction than the motor housing section and houses a reduction gear that reduces the rotational driving force of the electric motor,
the control unit is disposed on a vehicle front-rear direction front side of the gear housing portion, and overlaps the motor housing portion when the vehicle is viewed from the side.
According to this embodiment, since the control unit overlaps the motor unit on the front side of the gear housing portion, the space in front of the gear housing portion can be effectively utilized. Thus, the accommodation space of the battery can be more secured.
3. In the saddle-ride type electric vehicle of the above embodiment, the electric connecting member connects the first portion and a portion of the motor unit that overlaps with the first portion when the vehicle is viewed from the side.
According to this embodiment, since the connecting member connects the portion where the motor unit and the control unit overlap when the vehicle is viewed from the side, the length of the connecting member can be shortened, and mutual phase shift can be suppressed.
4. In the saddle-ride type electric vehicle of the above embodiment, the main frame includes a left side frame portion (e.g., 121) extending through the left side of the vehicle and a right side frame portion (e.g., 122) extending through the right side of the vehicle,
the motor unit and the control unit are disposed between the left frame portion and the right frame portion in a plan view of the vehicle.
According to this embodiment, since the motor unit and the control unit are disposed between the right side frame portion and the left side frame portion of the main frame, it is possible to suppress the projection of the structural members to the outside in the vehicle width direction. Therefore, the structural members can be arranged in a well-balanced manner.
5. The saddle-ride type electric vehicle according to the above embodiment includes:
a heat exchanger (e.g., 24) disposed at a position forward of the control unit and the motor unit in a vehicle front-rear direction;
a first hose (e.g. 251) and a second hose (e.g. 252) which circulate a cooling medium in the heat exchanger; and
an oil pan (e.g., 33) disposed at a lower portion of the motor unit,
one end of the first hose is connected to the heat exchanger, the first hose passes through a space between the motor unit and the control unit in a plan view of the vehicle, the other end of the first hose is connected to an upper portion of the motor unit,
One end of the second hose is connected to the heat exchanger, and the other end is connected to the vicinity of the oil pan,
the cooling medium circulates through the heat exchanger, the first hose, the motor unit, the second hose, and the heat exchanger in this order.
According to this embodiment, the first hose through which the cooling medium circulates is inserted between the control unit and the motor unit, whereby both can be cooled, and the cooling efficiency can be improved.
6. In the saddle-ride type electric vehicle of the above embodiment, the control unit includes a drive circuit board (e.g., 45) for supplying electric power to the electric motor and a control circuit board (e.g., 46) that transmits a control signal to the drive circuit board,
the drive circuit board and the control circuit board are arranged in parallel in the vehicle width direction,
the drive circuit board is disposed at a position outside the control circuit board in the vehicle width direction.
According to this embodiment, since the drive control board, which is more likely to be heated than the control circuit board, is disposed on the outer side in the vehicle width direction, it is possible to easily cool the drive control board by traveling wind.
Description of the reference numerals
1: a straddle-type vehicle; 16: a battery; 30: a motor unit; 40: a control unit.
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2018/013429 WO2019186954A1 (en) | 2018-03-29 | 2018-03-29 | Saddle riding-type electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111886178A CN111886178A (en) | 2020-11-03 |
| CN111886178B true CN111886178B (en) | 2022-07-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880091295.4A Active CN111886178B (en) | 2018-03-29 | 2018-03-29 | Saddle-ride type electric vehicle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6982170B2 (en) |
| CN (1) | CN111886178B (en) |
| WO (1) | WO2019186954A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112018007393T5 (en) * | 2018-03-29 | 2020-12-10 | Honda Motor Co., Ltd. | Electric vehicle of the straddle seat type |
| JP2024015971A (en) * | 2022-07-25 | 2024-02-06 | カワサキモータース株式会社 | Saddle-riding electric vehicle |
| WO2024247227A1 (en) * | 2023-06-01 | 2024-12-05 | 日立Astemo株式会社 | Drive source for saddle type vehicle |
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|---|---|---|---|---|
| EP2639941B1 (en) * | 2010-11-12 | 2019-04-03 | Kawasaki Jukogyo Kabushiki Kaisha | Cooling structure for electric vehicle |
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2018
- 2018-03-29 CN CN201880091295.4A patent/CN111886178B/en active Active
- 2018-03-29 WO PCT/JP2018/013429 patent/WO2019186954A1/en not_active Ceased
- 2018-03-29 JP JP2020508750A patent/JP6982170B2/en active Active
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| CN1153499A (en) * | 1995-06-14 | 1997-07-02 | 精工爱普生株式会社 | drive assist device |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2019186954A1 (en) | 2021-02-25 |
| WO2019186954A1 (en) | 2019-10-03 |
| CN111886178A (en) | 2020-11-03 |
| JP6982170B2 (en) | 2021-12-17 |
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