Electric two-wheeled vehicle

Abstract

The utility model discloses an electric two-wheeled vehicle. The electric two-wheeled vehicle comprises a battery assembly. The battery assembly comprises a battery shell, a battery module and a module busbar; the module busbar comprises a first busbar and a second busbar, the first busbar and the second busbar are both basically parallel to a preset plane, a projection direction perpendicular to the preset plane is defined, the projection of any first busbar on the preset plane along the projection direction is a first projection, and the projection of any second busbar on the preset plane along the projection direction is a second projection. The projection of the second busbar on the preset plane in the projection direction is a second projection, at least part of the first projection is overlapped with the second projection, the area of the first projection is set as a first area, the area of the overlapped surface of the first projection and the second projection is set as a second area, and the ratio range of the first area to the second area is larger than or equal to 3 and smaller than or equal to 7. Through the arrangement, the battery assembly can be prevented from being damaged, so that the service life of the battery assembly is prolonged.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an electric two-wheeled vehicle. Background Art

[0002] At present, electric two-wheeled vehicles are equipped with battery assemblies inside. The battery assemblies can be power batteries and / or storage batteries. The battery assemblies are used to provide electrical energy to the power assembly and / or body electrical appliances of the electric two-wheeled vehicle to achieve stable operation of the electric two-wheeled vehicle.

[0003] In the existing design, the battery assembly includes a first bus bar and a second bus bar, wherein the first bus bar and the second bus bar are connected by local welding. Since the contact area between the first bus bar and the second bus bar is large, a large gap exists between the first bus bar and the second bus bar, forming a voltage difference, which causes discharge arcing in the battery assembly and causes damage to the battery assembly or spontaneous combustion, thereby reducing the service life of the battery assembly. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the purpose of the present application is to provide an electric two-wheeled vehicle whose battery assembly has a longer service life.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] An electric two-wheeled vehicle, comprising a frame, a travel assembly, a power assembly and a battery assembly. The travel assembly is at least partially located below the frame; the power assembly is supported by the frame and is transmission-connected to the travel assembly; the battery assembly is supported by the frame and is electrically connected to the power assembly; the battery assembly comprises a battery housing, a battery module and a module bus, the battery module and the module bus are both located in the battery housing, and the battery module is electrically connected to the module bus; the module bus comprises a plurality of first buses and a second bus fixedly connected to the plurality of first buses, wherein the first bus and the second bus are both substantially parallel to a preset plane, a projection direction perpendicular to the preset plane is defined, the projection of any first bus on the preset plane along the projection direction is the first projection, the projection of the second bus on the preset plane along the projection direction is the second projection, the first projection at least partially overlaps with the second projection, the area of ​​the first projection is set to the first area, the area of ​​the overlapping surface of the first projection and the second projection is set to the second area, and the ratio range of the first area to the second area is greater than or equal to 3 and less than or equal to 7.

[0007] Furthermore, the ratio of the first area to the second area is greater than or equal to 4 and less than or equal to 6.

[0008] Furthermore, the first busbar at least partially abuts against the battery module, the second busbar is connected to a side of the first busbar away from the battery module, and when viewed along the projection direction, the first busbar, the second busbar and the battery module at least partially overlap.

[0009] Furthermore, the battery module includes a plurality of module cells, which extend substantially along the projection direction and are cylindrical, and the module cells include a positive terminal and a negative terminal, the positive terminal is electrically connected to a first bus, and the negative terminal is electrically connected to another first bus.

[0010] Furthermore, a shunt groove is formed on the first busbar, and the first busbar includes a first connecting portion and a second connecting portion located on both sides of the shunt groove, and the first connecting portion and / or the second connecting portion abuts against the module battery cell.

[0011] Furthermore, one end of the first connection portion close to the second busbar and one end of the second connection portion close to the second busbar are connected to each other to form a current return portion, and the second busbar includes a current collecting portion, which is electrically connected to the current return portion.

[0012] Furthermore, the battery assembly also includes a positive connection block and a negative connection block, which are located on both sides of the battery module along the projection direction, the positive connection block is connected to a second bus, and the negative connection block is connected to another second bus.

[0013] Furthermore, the battery assembly also includes a high-voltage distributor, a first guide plate and a second guide plate. The high-voltage distributor, the first guide plate and the second guide plate are all located in the battery housing and connected to the battery housing. The two ends of the first guide plate are respectively connected to the high-voltage distributor and the positive electrode connection block, and the two ends of the second guide plate are respectively connected to the high-voltage distributor and the negative electrode connection block.

[0014] Furthermore, the electric two-wheeled vehicle also includes a high-voltage connector, which at least partially passes through the battery housing and is electrically connected to the high-voltage distributor, and one end of the high-voltage connector away from the high-voltage distributor is connected to the power assembly.

[0015] Further, a ratio of a thickness of the second busbar along the projection direction to a thickness of the first busbar along the projection direction is greater than or equal to 1.5 and less than or equal to 3.5.

[0016] The above-mentioned electric two-wheeled vehicle can increase the conductivity of the first bus and the second bus, avoiding the voltage difference between the first bus and the second bus due to the gap between the first bus and the second bus, thereby preventing the battery component from being damaged or spontaneously combusted due to discharge and arcing, which is beneficial to improving the service life of the battery component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A schematic diagram of the overall structure of an electric two-wheeled vehicle provided in an embodiment of the present application.

[0018] Figure 2 A schematic diagram of the structure of a battery assembly provided in an embodiment of the present application.

[0019] Figure 3 A partial schematic diagram of a battery assembly provided in an embodiment of the present application.

[0020] Figure 4 A schematic diagram of the connection of a battery module, a module bus, a positive electrode connection block and a negative electrode connection block provided in an embodiment of the present application.

[0021] Figure 5 A side view of a first busbar and a second busbar provided in accordance with an embodiment of the present application. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0023] like Figure 1 An electric two-wheeled vehicle 100 is shown, and the electric two-wheeled vehicle 100 includes a frame 11, a suspension assembly 12, a travel assembly 13, a power assembly 14 and a battery assembly 15. The frame 11 constitutes the basic framework of the electric two-wheeled vehicle 100, and is used to support the suspension assembly 12, the travel assembly 13, the power assembly 14 and the battery assembly 15. The suspension assembly 12 is connected to the frame 11, and the suspension assembly 12 has shock absorption, buffering and guiding functions to transmit various forces and moments between the travel assembly 13 and the frame 11, and control various vibrations of the vehicle body. The travel assembly 13 is connected to the frame 11 through the suspension assembly 12, and the travel assembly 13 is used for the movement of the electric two-wheeled vehicle 100. The power assembly 14 is connected to the frame 11 or integrated on the travel assembly 13, and the power assembly 14 is supported by the frame 11. The power assembly 14 is connected to the travel assembly 13 through transmission, and the power assembly 14 can drive the travel assembly 13 to move. The battery assembly 15 is supported by the frame 11 and electrically connected to the power assembly 14. The battery assembly 15 is used to provide electric energy for the electric two-wheeled vehicle 100. The battery assembly 15 can be a power battery and / or a storage battery. The power battery and / or storage battery can be electrically connected to the power assembly 14 and / or the body electrical appliances, so that the battery assembly 15 can provide sufficient electric energy for the power assembly 14 and / or the body electrical appliances. In order to clearly explain the technical solution of the application, it is also defined as follows: Figure 1 In the present application, the length direction of the frame 11 refers to the front-rear direction, the width direction of the frame 11 refers to the left-right direction, and the height direction of the frame 11 refers to the up-down direction.

[0024] In this embodiment, the travel assembly 13 is at least partially located below the frame 11, and the travel assembly 13 includes a front wheel 131 and a rear wheel 132, and the front wheel 131 and the rear wheel 132 are distributed along the length direction of the frame 11. The battery assembly 15 is at least partially located above the front wheel 131 and the rear wheel 132, and the battery assembly 15 is also at least partially located between the front wheel 131 and the rear wheel 132. It should be noted that the electric two-wheeled vehicle 100 in the present application can be at least one of a single-person electric two-wheeled vehicle, a two-person electric two-wheeled vehicle, a four-person electric two-wheeled vehicle, etc., and the electric two-wheeled vehicle 100 in the present application is described by taking a single-person electric two-wheeled vehicle as an example.

[0025] It should be noted that the battery assembly 15 can be arranged anywhere on the vehicle body according to actual needs, wherein the battery assembly 15 can be set on the upper side of the front wheel 131 or the upper side of the rear wheel 132, and the battery assembly 15 can also be set at a position between the front wheel 131 and the rear wheel 132. The present application takes the example of the battery assembly 15 being set between the front wheel 131 and the rear wheel 132 for explanation.

[0026] like Figure 2 and Figure 3 As shown, as an implementation, the battery assembly 15 includes a battery housing 151, a battery module 152 and a module bus 153, the battery module 152 and the module bus 153 are both located in the battery housing 151, and the battery module 152 is electrically connected to the module bus 153. Specifically, the battery module 152 is used to collect and release current, and the module bus 153 is used to receive and distribute current. More specifically, the battery module 152 includes a positive side 1521 and a negative side 1522 opposite to the positive side 1521, wherein the positive side 1521 and the negative side 1522 are electrically connected to different module buses 153, and the module bus 153 of the positive side 1521 and the module bus 153 of the negative side 1522 are both electrically connected to an external electrical appliance. Through the above arrangement, the module busbar 153 on the positive side 1521 is used to distribute the internal current of the battery module 152, and the module busbar 153 on the negative side 1522 is used to collect the external current of the battery module 152, so that the current can circulate between the battery assembly 15 and the external electrical appliance, thereby facilitating the improvement of the working stability of the battery assembly 15. In addition, the contact area between the module busbar 153 and the battery module 152 is large, thereby avoiding the increase of resistance when the current flows between the module busbar 153 and the battery module 152, thereby preventing the increase of energy consumption of the battery module 152, and further facilitating the improvement of the service life of the battery assembly 15.

[0027] In this embodiment, the module bus 153 includes a plurality of first buses 1531 and a second bus 1532 fixedly connected to the plurality of first buses 1531, wherein the first bus 1531 and the second bus 1532 are both sheet structures and abut against each other, the first bus 1531 and the second bus 1532 are both substantially parallel to a preset plane 101, and define a projection direction perpendicular to the preset plane 101, the projection of any first bus 1531 on the preset plane 101 along the projection direction is a first projection, the projection of the second bus 1532 on the preset plane 101 along the projection direction is a second projection, the first projection is at least partially located in the area formed by the edge of the second projection, and the projection of the connection between the first bus 1531 and the second bus 1532 is located in the overlapping surface of the first projection and the second projection. Specifically, the first busbar 1531 is at least partially attached to the second busbar 1532, and the first busbar 1531 and the second busbar 1532 can be connected by welding, so that the first busbar 1531 and the second busbar 1532 can be closely attached, and the overlapping surface of the first projection and the second projection is small, that is, the contact surface of the first busbar 1531 and the second busbar 1532 is small, so as to avoid the formation of a gap between the first busbar 1531 and the second busbar 1532 due to welding errors, so as to prevent the conductivity of the first busbar 1531 and the second busbar 1532 from being reduced. Through the above arrangement, the conductivity of the first busbar 1531 and the second busbar 1532 is increased, and the voltage difference between the first busbar 1531 and the second busbar 1532 caused by the gap between the first busbar 1531 and the second busbar 1532 is avoided, so as to prevent the battery assembly 15 from being damaged or spontaneously combusted due to discharge and arcing, thereby facilitating the service life of the battery assembly 15.

[0028] It should be noted that the first bus 1531 can be a nickel metal sheet, and the second bus 1532 can be a copper metal sheet or an aluminum metal sheet, wherein the nickel metal and the copper metal can be connected by manual tungsten inert gas welding, manual arc welding, metal inert gas welding, laser welding or ultrasonic welding. Similarly, the nickel metal and the aluminum metal can also be connected by the above welding methods.

[0029] As an implementation method, when viewed along the projection direction, the first busbar 1531, the second busbar 1532 and the battery module 152 at least partially overlap. Through the above arrangement, the structure of the first busbar 1531, the second busbar 1532 and the battery module 152 can be made more compact, thereby facilitating the improvement of the structural compactness of the battery assembly 15.

[0030] In this embodiment, the area of ​​the first projection is set to the first area, the area of ​​the overlapping surface of the first projection and the second projection is set to the second area, and the ratio of the first area to the second area is greater than or equal to 3 and less than or equal to 7. Specifically, the ratio of the first area to the second area is greater than or equal to 4 and less than or equal to 6. More specifically, the ratio of the first area to the second area is 5. Through the above setting, it is possible to avoid the contact area between the first busbar 1531 and the second busbar 1532 being too large due to the ratio of the first area to the second area being too large, so as to prevent the existence of a gap between the first busbar 1531 and the second busbar 1532, which is beneficial to improve the protection of the battery assembly 15; it is also possible to avoid the contact area between the first busbar 1531 and the second busbar 1532 being too small due to the ratio of the first area to the second area being too small, so as to prevent the connection strength between the first busbar 1531 and the second busbar 1532 from being too small, which is also beneficial to improve the connection stability between the first busbar 1531 and the second busbar 1532.

[0031] like Figure 4 As shown, as an implementation, the first busbar 1531 is at least partially in contact with the battery module 152, and the second busbar 1532 is connected to the side of the first busbar 1531 away from the battery module 152. Specifically, the battery module 152 includes a plurality of module cells 1521, which extend substantially along the projection direction and are cylindrical, and the module cells 1521 include a positive terminal 1521a and a negative terminal 1521b, the positive terminal 1521a is electrically connected to one first busbar 1531, and the negative terminal 1521b is electrically connected to another first busbar 1531. More specifically, different first busbars 1531 are provided at both ends of the module battery 1521, so that the current in the module battery 1521 is transferred to the second busbar 1532 through the first busbar 1531, and at the same time, the current on the second busbar 1532 can also transfer electric energy to different module batteries 1521 through different first busbars 1531. Through the above arrangement, multiple module batteries 1521 can be integrated, thereby increasing the power storage capacity of the battery assembly 15, and further improving the endurance of the electric two-wheeled vehicle 100.

[0032] In this embodiment, a shunt groove 1531a is opened on the first bus 1531, and the first bus 1531 includes a first connection part 1531b and a second connection part 1531c located on both sides of the shunt groove 1531a, and the first connection part 1531b and / or the second connection part 1531c abuts against the module battery 1521. Specifically, the first connection portion 1531b and the second connection portion 1531c can increase the contact area with the module battery cell 1521, thereby reducing the loss of current during the transmission process. At the same time, during the driving of the electric two-wheeled vehicle 100, the battery assembly 15 vibrates due to road conditions to avoid poor contact between the first bus 1531 and the module battery cell 1521 and cause failure of the battery assembly 15. Therefore, the present application opens a shunt groove 1531a on the first bus 1531 to avoid the first connection portion 1531b and the second connection portion 1531c from being separated from the module battery cell 1521 at the same time, which is beneficial to improve the working stability of the battery assembly 15.

[0033] As an implementation method, one end of the first connection portion 1531b close to the second busbar 1532 and one end of the second connection portion 1531c close to the second busbar 1532 are connected to each other and form a current return portion 1531d, and the second busbar 1532 includes a current collecting portion 1532a, and the current collecting portion 1532a is electrically connected to the current return portion 1531d. Specifically, the first connection portion 1531b and the second connection portion 1531c transmit the current to the current collecting portion 1532a through the current return portion 1531d to realize the flow of current on the first busbar 1531 and the second busbar 1532. Through the above arrangement, the first connection portion 1531b and the second connection portion 1531c can be stably connected to the second busbar 1532, which is conducive to improving the connection stability of the first busbar 1531 and the second busbar 1532, and further conducive to improving the working stability of the battery assembly 15.

[0034] like Figure 3 and Figure 4As shown, as an implementation, the battery assembly 15 further includes a positive connection block 154 and a negative connection block 155, the positive connection block 154 and the negative connection block 155 are located on both sides of the battery module 152 along the projection direction, the positive connection block 154 is connected to a second bus 1532, and the negative connection block 155 is connected to another second bus 1532. Specifically, the positive connection block 154 and the negative connection block 155 are both used to collect the current of the second bus 1532. More specifically, the battery assembly 15 further includes a high-voltage distributor 156, a first guide plate 157 and a second guide plate 158, the high-voltage distributor 156, the first guide plate 157 and the second guide plate 158 are all located in the battery housing 151 and connected to the battery housing 151, the two ends of the first guide plate 157 are respectively connected to the high-voltage distributor 156 and the positive connection block 154, and the two ends of the second guide plate 158 are respectively connected to the high-voltage distributor 156 and the negative connection block 155. Through the above-mentioned arrangement, the positive electrode connection block 154 can transmit current to the high-voltage distributor 156 through the first guide plate 157, and the high-voltage distributor 156 can also transmit current to the negative electrode connection block 155 through the second guide plate 158, so that the current can circulate stably in the battery module 152 and the high-voltage distributor 156, which is beneficial to improve the current flow stability, and further beneficial to improve the working efficiency of the battery assembly 15.

[0035] like Figure 2 As shown, in this embodiment, the electric two-wheeled vehicle 100 also includes a high-voltage connector 16, which at least partially passes through the battery housing 151 and is electrically connected to the high-voltage distributor 156, and the end of the high-voltage connector 16 away from the high-voltage distributor 156 is connected to the power assembly 14. Specifically, the high-voltage distributor 156 transmits electrical energy to the power assembly 14 through the high-voltage connector 16, so that the power assembly 14 obtains electrical energy and works stably. Through the above-mentioned arrangement, the high-voltage distributor 156 can adjust the magnitude of the current so that the power assembly 14 drives the rotation speed of the travel assembly 13 according to the magnitude of the current, which is beneficial to control the speed of the electric two-wheeled vehicle 100, while avoiding the battery assembly 15 from continuously working with high energy consumption and greatly shortening the use time, which is also beneficial to improve the service life of the battery assembly 15.

[0036] like Figure 5As shown, as an implementation, the ratio of the thickness W1 of the second busbar 1532 along the projection direction to the thickness W2 of the first busbar 1521 along the projection direction is in a range of greater than or equal to 1.5 and less than or equal to 3.5. Further, the ratio of the thickness W1 of the second busbar 1532 along the projection direction to the thickness W2 of the first busbar 1521 along the projection direction is in a range of greater than or equal to 2 and less than or equal to 3. Further, the ratio of the thickness W1 of the second busbar 1532 along the projection direction to the thickness W2 of the first busbar 1521 along the projection direction is 2.5. Through the above-mentioned arrangement, it is possible to avoid the mass of the second bus bar 1532 being too large due to the ratio of the thickness W1 of the second bus bar 1532 along the projection direction to the thickness W2 of the first bus bar 1521 along the projection direction being too large, thereby preventing the mass of the battery assembly 15 from being increased, which is beneficial to achieving lightweight battery assembly 15; it is also possible to avoid the conductivity of the second bus bar 1532 being reduced due to the ratio of the thickness W1 of the second bus bar 1532 along the projection direction to the thickness W2 of the first bus bar 1521 along the projection direction being too small, thereby preventing the loss of the battery assembly 15, which is beneficial to improving the service life of the battery assembly 15.

[0037] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An electric two-wheeled vehicle, comprising: Frame; A traveling assembly, wherein the traveling assembly is at least partially located below the frame; A power assembly, the power assembly is supported by the frame and is transmission-connected to the travel assembly; A battery assembly, the battery assembly is supported by the frame and includes a battery housing, a battery module and a module bus, the battery module and the module bus are both located in the battery housing, and the battery module is electrically connected to the module bus; It is characterized in that The module bus includes multiple first buses and second buses fixedly connected to the multiple first buses, wherein the first buses and the second buses are basically parallel to a preset plane, and a projection direction perpendicular to the preset plane is defined, the projection of any one of the first buses on the preset plane along the projection direction is a first projection, the projection of the second bus on the preset plane along the projection direction is a second projection, the first projection at least partially overlaps with the second projection, the area of ​​the first projection is set to a first area, the area of ​​the overlapping surface of the first projection and the second projection is set to a second area, and the ratio of the first area to the second area is greater than or equal to 3 and less than or equal to 7.

2. The electric two-wheeled vehicle according to claim 1, characterized in that: A ratio of the first area to the second area is greater than or equal to 4 and less than or equal to 6.

3. The electric two-wheeled vehicle according to claim 1, characterized in that: The first busbar at least partially abuts against the battery module, the second busbar is connected to a side of the first busbar away from the battery module, and when viewed along the projection direction, the first busbar, the second busbar and the battery module at least partially overlap.

4. The electric two-wheeled vehicle according to claim 3, characterized in that: The battery module includes a plurality of module cells, which extend substantially along the projection direction and are cylindrical, and include a positive terminal and a negative terminal, wherein the positive terminal is electrically connected to one of the first bus bars, and the negative terminal is electrically connected to another of the first bus bars.

5. The electric two-wheeled vehicle according to claim 4, characterized in that: The first busbar is provided with a shunt groove, and the first busbar includes a first connecting portion and a second connecting portion located on both sides of the shunt groove, and the first connecting portion and / or the second connecting portion abuts against the module battery cell.

6. The electric two-wheeled vehicle according to claim 5, characterized in that: One end of the first connection part close to the second bus and one end of the second connection part close to the second bus are connected to each other to form a current return part, the first connection part and one end of the second connection part close to the second bus are connected to each other to form a current return part, the second bus includes a current collecting part, and the current collecting part is electrically connected to the current return part.

7. The electric two-wheeled vehicle according to claim 1, characterized in that: The battery assembly also includes a positive connection block and a negative connection block, which are located on both sides of the battery module along the projection direction, the positive connection block is connected to one of the second bus bars, and the negative connection block is connected to another of the second bus bars.

8. The electric two-wheeled vehicle according to claim 7, characterized in that: The battery assembly also includes a high-voltage distributor, a first guide plate and a second guide plate. The high-voltage distributor, the first guide plate and the second guide plate are all located in the battery housing and connected to the battery housing. The two ends of the first guide plate are respectively connected to the high-voltage distributor and the positive electrode connection block, and the two ends of the second guide plate are respectively connected to the high-voltage distributor and the negative electrode connection block.

9. The electric two-wheeled vehicle according to claim 8, characterized in that: The electric two-wheeled vehicle further comprises a high-voltage connector, which at least partially passes through the battery housing and is electrically connected to the high-voltage distributor, and one end of the high-voltage connector away from the high-voltage distributor is connected to the power assembly.

10. The electric two-wheeled vehicle according to claim 1, characterized in that: A ratio of a thickness of the second busbar along the projection direction to a thickness of the first busbar along the projection direction is greater than or equal to 1.5 and less than or equal to 3.5.

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