阅读说明：本技术 电动摩托车 (Electric motorcycle ) 是由 S·卡利赫 H·格拉夫 J·赫勒 R·博伊梅尔 F·特劳布 于 2020-05-06 设计创作，主要内容包括：本发明涉及一种电动摩托车(10),所述电动摩托车具有在前视图中定位在该电动摩托车(10)中心的用于安置电动机和/或变速器的壳体(14)、内部的冷却装置(20)和/或电子组件(22)并且具有安装在壳体(14)的彼此相反的各侧上的从壳体(14)的侧向向外延伸出的两个冷却体(16)。在所述冷却体(16)上设有外置的散热片(26),所述外置的散热片沿电动摩托车(10)的纵向方向延伸,从而冷却体(16)连同其散热片(26)与电动摩托车(10)的环境空气直接接触。所述冷却装置(20)和/或电子组件(22)至少局部地安置在各冷却体(16)之中的至少一个冷却体中并且与该冷却体(16)热连接。(The invention relates to an electric motorcycle (10) having a housing (14) for accommodating an electric motor and/or a transmission, which is positioned in the center of the electric motorcycle (10) in a front view, an internal cooling device (20) and/or an electronic assembly (22), and having two cooling bodies (16) which are mounted on opposite sides of the housing (14) and extend outwards from the lateral sides of the housing (14). An external heat sink (26) is arranged on the heat sink (16) and extends in the longitudinal direction of the electric motor vehicle (10), so that the heat sink (16) with its heat sink (26) is in direct contact with the ambient air of the electric motor vehicle (10). The cooling device (20) and/or the electronic component (22) are arranged at least partially in at least one of the cooling bodies (16) and are thermally connected to the cooling body (16).)

1. An electric motorcycle having a housing (14) for housing an electric motor and/or a transmission, positioned in the center of the electric motorcycle (10) in front view, an internal cooling device (20) and/or an electronic component (22) and having two cooling bodies (16) mounted on opposite sides of the housing (14) from each other and extending laterally outwards of the housing (14),

wherein each cooling body (16) is provided with an external cooling fin (26) which extends along the longitudinal direction of the electric motorcycle (10) so that the cooling body (16) and the cooling fins (26) thereof are in direct contact with the ambient air of the electric motorcycle (10),

and the cooling device (20) and/or the electronic component (22) are at least partially arranged in at least one of the cooling bodies (16) and are thermally connected to the cooling body (16) in order to dissipate thermal energy of the cooling device (20) and/or the electronic component (22) via the cooling body (16) to the environment of the electric motorcycle (10).

2. Motor-cycle according to claim 1, characterized in that the cooling fins (26) are integrally formed in one piece on the associated cooling body (16).

3. Electric motorcycle according to claim 1 or 2, characterised in that at least some of the cooling fins (26) surround the assigned cooling body (16) in a circumferentially closed manner.

4. Electric motorcycle according to any one of the preceding claims, characterized in that said cooling means (20) comprise a liquid cooler for components of the electric motorcycle (10) and/or a cooler for components of the electric motorcycle (10) remote from the cooling body, and/or in that said electronic components (22) comprise power electronics and/or charging electronics.

5. Electric motorcycle according to any one of the preceding claims, characterized in that at least one among the cooling bodies (16) has a cavity (24) in which the cooling device (20) and/or the electronic component (22) are arranged.

6. Motor motorcycle according to any one of the preceding claims, characterised in that at least one heat sink (16) is provided with a built-in cooling fin (38) which projects into the cavity (24), in particular wherein the built-in cooling fin (38) is directly connected to the cooling device (20) and/or the electronic component (22) in the cavity (24).

7. Electric motorcycle according to any one of the preceding claims, characterized in that said cooling body (16) and said external fins (26) comprise or are made of light metal, preferably aluminium.

8. Motor motorcycle according to any one of the preceding claims, characterised in that the cooling body (16) is at the height (H) of the housing (14)_G) And ends spaced apart from the upper and lower ends of the housing (14) by a distance of at least 50mm, and is shorter than the housing (14) in the vehicle longitudinal direction.

9. Motor motorcycle according to any one of the preceding claims, characterised in that the cooling bodies (16) each have a horizontal width (B), seen in the longitudinal direction of the vehicle_K) The horizontal width is equal to the maximum width (B) of the housing (14)_G) At least 40% of the total weight of the composition.

10. Motor-scooter according to one of the preceding claims, characterized in that the distance (32) of the point of each cooling body (16) which is the furthest from the vertical centre plane (28) of the motor-scooter (10) running in the longitudinal direction of the vehicle from the centre plane (28) of the motor-scooter (10) is the total width (B) of the motor-scooter (10)_M) At least 35% of the total weight of the composition.

11. Electric motorcycle according to any one of the preceding claims, characterised in that the two cooling bodies (16) are arranged in a mirror-symmetrical manner with respect to a vertical centre plane (28) of the electric motorcycle (10) running in the longitudinal direction of the vehicle.

Technical Field

The invention relates to an electric motorcycle.

Background

An electric motorcycle is a two-wheeled vehicle that is driven at least partially by an electric motor. For this purpose, the electric motor converts the electrical energy stored in the high-voltage accumulator into mechanical energy for traction.

Heat is generated not only during operation of the high-voltage accumulator but also during charging of the high-voltage accumulator, which heat is caused by energy losses. The heat then needs to be correspondingly conducted away.

For this purpose, the solutions known from the prior art generally use a ventilation box provided on the front fender of the electric motorcycle, which guides ambient air via a flow channel to the components of the electric motorcycle to be cooled.

Disclosure of Invention

The aim of the invention is to improve the heat dissipation of an electric motorcycle.

In order to solve this task, according to the invention there is provided an electric motorcycle comprising: a housing for accommodating the electric motor and/or the transmission, which housing is positioned in the center of the motorcycle in a front view, an internal cooling device and/or electronic components, and two cooling bodies which are mounted on opposite sides of the housing and extend laterally outward from the housing. In this case, an external cooling fin is provided on each cooling body, which extends in the longitudinal direction of the electric motor vehicle, so that the cooling body with its cooling fins comes into direct contact with the ambient air of the electric motor vehicle. The cooling device and/or the electronic component are at least partially arranged in at least one of the cooling bodies and are thermally connected to the cooling body in order to dissipate thermal energy of the cooling device and/or the electronic component via the cooling body to the environment of the electric motorcycle.

The invention is based on the basic idea of cooling internal cooling devices and/or electronic components to be cooled by means of two cooling bodies directly by the ambient air of the electric motorcycle. The cooling device and/or the electronic component are arranged at least partially in at least one of the cooling bodies. The cooling body extends laterally outward from the electric motorcycle. By means of this arrangement of the cooling body, a large area of the cooling body is in direct contact with the ambient air, so that an improved cooling is achieved, since a large amount of thermal energy can be conducted away. The provision of at least one part of the cooling device and/or the electronic component in a cooling body which projects laterally from the electric motor vehicle makes it possible to obtain additional installation space on the electric motor vehicle, so that, for example, larger batteries can be installed.

According to the invention, "in direct contact with the ambient air of the electric motorcycle" is understood to mean that the oncoming wind generated in the movement of the electric motorcycle flows around the cooling body. Ambient air is therefore not guided to the cooling body via the flow channel.

In particular, five sides of the cooling body are in direct contact with the ambient air, so that a large contact area is provided between the cooling body and the ambient air.

One aspect of the invention provides that the cooling ribs are integrally formed on the associated heat sink. In this way, good heat conduction between the heat sink and the heat sink is achieved.

In order to achieve a uniform distribution of the thermal energy along the cooling fins, at least some of the cooling fins can be arranged circumferentially closed around the associated heat sink.

The electronic components comprise, for example, power electronics and/or charging electronics which heat up strongly during operation.

In one embodiment of the invention, the cooling device comprises a liquid cooler for a component of the electric motor vehicle and/or a cooler for a component of the electric motor vehicle remote from the cooling body. By means of the respective cooling body, the heat removal of the components to be cooled of the electric motorcycle is thus improved.

For example, the components of the electric motorcycle are electronic components of the electric motorcycle, an electric motor, a transmission, and/or a battery.

As cooling liquid for the liquid cooler, water, oil, glycol or glycol-water mixtures can be used.

At least one of the cooling bodies may have a cavity, in which the cooling device and/or the electronic component is arranged. The cooling means and/or the electronic components are thus protected from external influences (for example moisture).

In order to achieve an effective heat transfer, at least one heat sink can be provided with an internal heat sink which projects into the cavity.

For example, the built-in heat sink is directly connected in the cavity to the cooling device and/or the electronic component via a planar contact. In this way a simpler construction of the heat sink is ensured. The oil may also directly contact the heat sink.

It is conceivable for the heat sink and the external heat sink to comprise or be made of a light metal, preferably aluminum. Thus providing a lighter cooling body, thereby saving the weight of the electric motorcycle. In addition, aluminum has very good thermal conductivity.

In order to achieve a center of gravity of the electric motorcycle that is as low as possible, the heat sink can extend in the middle third or lower third of the height of the housing and end spaced apart from the upper end and lower end of the housing by a distance of at least 50 mm.

Preferably, the heat sink is arranged in the lower two thirds of the housing and extends out so far that, in the maximum inclined position of the electric motorcycle, the heat sink does not contact the road.

Furthermore, the cooling body is shorter than the housing in the vehicle longitudinal direction, thereby providing additional space for the feet and legs of the driver of the electric motorcycle.

For example, the cooling bodies each have a horizontal width, viewed in the longitudinal direction of the vehicle, which is equal to at least 40% of the maximum width of the housing. Thus, the foot area of the driver of the electric motorcycle is additionally protected in the event of a lateral tilting of the electric motorcycle.

The distance between the point of each cooling body which is furthest from the vertical center plane of the electric motorcycle running in the vehicle longitudinal direction and the center plane of the electric motorcycle may be at least 35% of the total width of the electric motorcycle and may be a maximum of 50% of the total width of the electric motorcycle. The standard size of the electric motor vehicle is thus determined by other components (e.g. steering handle) and at the same time as a large contact area is provided on the heat sink as possible for heat dissipation.

Preferably, the two heat sinks are arranged in a mirror-symmetrical manner with respect to a vertical center plane of the electric motorcycle extending in the vehicle longitudinal direction. In this way uneven force action on the frontal wind on different sides of the electric motorcycle is prevented.

A variant of the invention provides that the electronic component is positioned in one heat sink and the liquid cooler is positioned in another heat sink. Thus, the cooling body forms part of a liquid cooler.

Furthermore, it is also conceivable to provide the cooler of the component remote from the heat sink, for example a cooling line, locally in the heat sink.

Drawings

Other features and advantages of the present invention will be apparent from the following specification and from the drawings referred to hereinafter. In the drawings:

figure 1 shows a schematic front view of an electric motorcycle according to the invention,

figure 2 shows a schematic front view of the housing of figure 1 together with a cooling body,

FIG. 3 shows a schematic top view of the housing of FIG. 2 together with a cooling body, and

fig. 4 shows a section through the cooling body along a section line IV-IV of fig. 3.

Detailed Description

Fig. 1 schematically shows a front view of an electric motorcycle 10.

The electric motorcycle 10 is a motorcycle that is at least partially, in particular completely, driven by an electric motor.

The electric motorcycle 10 has a steering handle 12, a housing 14 for accommodating an electric motor and/or a transmission, two cooling bodies 16, a front wheel 18, an internal cooling device 20 and a plurality of electronic components 22, of which only one is shown.

The lengths, widths, and heights of the electric motorcycle 10 and of the individual components of the electric motorcycle 10 (e.g., the housing 14 and the heat sink 16) described below are always related to the installation position in the electric motorcycle 10.

The length of the assembly described hereinafter is an extension in the longitudinal direction of the electric motorcycle 10, i.e., in the vehicle longitudinal direction, in the mounted position. The width is then the extension of the respective component in the horizontal direction, which is arranged orthogonally to the longitudinal direction of the vehicle, and the height of the component is the extension in the vertical direction.

The steering handle 12 determines the overall width B of the electric motorcycle 10 as shown in fig. 1_M。

The internal cooling device 20 comprises, for example, a liquid cooler for the transmission, the electric motor or the battery of the electric motorcycle 10 and/or a cooler for components of the electric motorcycle 10 remote from the cooling body.

The electronic assembly 22 has power electronics and/or charging electronics of the electric motorcycle 10.

The power electronic device is, for example, an inverter that converts a direct-current voltage supplied from a battery of the electric motorcycle 10 into an alternating-current voltage, and/or a voltage converter that converts a high voltage (greater than 60V) of the battery into a low voltage (12V to 24V) required by an on-vehicle network of the electric motorcycle 10. The components of the electric motorcycle 10, such as the digital speedometer, the direction indicator lights, etc., are supplied with electric power by the on-board network.

The cooling body 16 is provided on each side of the electric motorcycle 10 opposite to each other.

More precisely, the cooling body 16 is arranged on mutually opposite sides of the housing 14, so that the cooling body 16 produces a horizontally opposed cylinder contour for the electric motorcycle 10.

In other words, the cooling body 16 produces a visual image as in a motorcycle having a horizontal opposed-cylinder engine in which the cylinders are disposed on opposite sides of the motorcycle from each other.

The heat sink 16 has a cavity 24 (see fig. 4), in which the internal cooling device 20 and/or the electronic component 22 are at least partially arranged.

In the embodiment of fig. 1, the internal cooling device 20 is arranged at least partially in the left heat sink 16 in the front view, and the electronic components 22 are arranged at least partially in the right heat sink 16.

Since the internal cooling device 20 and the electronic components 22 are arranged in the associated cavity 24 and are therefore not visible in the front view of fig. 1, the internal cooling device 20 and the electronic components 22 are shown in fig. 1 in dashed lines.

On the cooling bodies 16, in each case an outer cooling fin 26 is provided, which extends in the longitudinal direction of the electric motorcycle 10 and surrounds the respective cooling body 16 in a circumferentially closed manner.

The cooling ribs 26 are integrally formed on the associated heat sink 16 in one piece in such a way that they together form a casting.

The heat sink 16 is thus designed as a plate cooler in conjunction with the associated external heat sink 26.

In the embodiment of fig. 1, the heat sink 16 and the external heat sink 26 are made of a light metal, preferably aluminum.

In fig. 1, it can be seen that the two laterally projecting cooling bodies 16 are arranged in a mirror-symmetrical manner with respect to a vertical center plane 28 of the electric motorcycle 10, which extends in the longitudinal direction of the vehicle.

More precisely, the maximum external distance 30 between the cooling bodies 16 (i.e. the distance between the points of the respective cooling body 16 which are furthest from the central plane 28) is the overall width B of the electric motorcycle 10_M70% to 100%.

In FIG. 1The outer gap 30 is approximately the total width B of the electric motorcycle 10_M75% of the total.

In other words, the distance 32 from the point of each cooling body 16 which is furthest from the central plane 28 to the central plane 28 is within the total width B of the electric motorcycle 10_MBetween 35% and 50%.

The heat sink 16 is designed to dissipate the heat energy of the cooling device 20 and the electronic assembly 22 to the environment of the electric motorcycle 10.

To this end, the cooling body 16 on the left is in thermal contact with the cooling device 20, and the cooling body 16 on the right is in thermal contact and physical contact with the electronic component 22, so that thermal energy of the cooling device 20 and/or the electronic component 22 is transferred to the cooling body 16 and the corresponding heat sink 26.

The cooling body 16 and the heat sink 26 are in contact with the ambient air of the electric motorcycle 10, so that the thermal energy is discharged to the ambient air by heat conduction.

Fig. 2 shows the housing 14 and the arrangement of the heat sink 16 on the housing 14 in the front view of fig. 1.

It can be seen that the cooling body 16, which is embodied for example as a one-piece body, is mounted on mutually opposite sides of the housing 14.

The maximum height H of the housing 14 is also plotted in FIG. 2_GAnd a maximum width B_GAnd the width B of the cooling body 16_K. Here, the width B of the cooling body_KIs equal to the width B of the housing 14_GAbout 50% of the total.

In general, the width B of the cooling body 16_KIs the width B of the housing 14_GAt least 40% of the total weight of the composition.

It can also be seen that the heat sink 16 is mounted vertically in the majority, preferably completely laterally in the middle third, of the middle third 34 on the housing 14. For the sake of clarity, two auxiliary lines 36 are drawn for this purpose, which connect the housing 14 at the height H_GThe aspect is divided into three equal sized portions.

In general, the heat sink 16 can also be arranged in or extend to the lower third of the housing 14 or the lower two thirds of the housing.

The heat sink 16 has a distance a to the upper and lower end of the housing 14 of at least 50 mm.

In the embodiment of fig. 2, the spacing a to the upper and lower ends of the housing 14 is equal. In general, the spacing may of course also be different.

Fig. 3 shows the housing 14 and the heat sink 16 in a plan view.

Except for the width B of the housing 14_GAnd the width B of the cooling body 16_KIn addition, the length L of the heat sink 16 is also plotted_KAnd the length L of the housing 14_G。

It can be seen that the cooling body 16 is shorter in the longitudinal direction of the vehicle than the housing 14, i.e. the cooling body 16 has a length L which is shorter than the housing 14_GSmaller length L_K。

Fig. 4 shows a section through the left cooling body 16 along the section line IV-IV in fig. 3.

In the interior of the heat sink 16, i.e. in the cavity 24, there are provided internal cooling fins 38, which bring the internal cooling device 20 into thermal contact with the heat sink 16.

Direct heat conduction between the cooling device 20 and the heat sink 16 is thus achieved via the built-in cooling fins 38.

The embodiment shown in fig. 4 is to be understood as exemplary only. It is contemplated that electronic assembly 22 may alternatively or additionally be disposed within cooling body 16 or between cooling fins.

It is also conceivable for the internal cooling device 20 and/or the electronic component 22 to fill the entire cavity 24 of the heat sink 16.

The cooling body 16 and/or the cooling fins 26, 38 are at least partially traversed by the liquid, so that an effective cooling of the liquid is provided.