Electric saddle type vehicle

Abstract

The utility model provides an electric saddle type vehicle. The electric saddle type vehicle comprises a communication transmission line, a first resistor, a second resistor, a battery pack, a third resistor and a first switch. The first resistor is arranged at the first end of the communication transmission line. The second resistor is arranged at the second end of the communication transmission line. The first end of the first switch is electrically connected with a communication transmission line, the second end of the first switch is in communication connection with the battery pack, and the third end of the first switch is electrically connected with the second end or the first end of the third resistor. When the battery pack is connected to the vehicle body, the first end and the second end of the first switch are switched on; and when the battery pack is not connected to the vehicle body, the first end and the third end of the first switch are switched on. According to different charging modes, the access of the third resistor is controlled through the first switch, so that in the different charging modes, the total resistance value of the terminal resistor is in a proper range, and the communication quality of the battery pack in the charging process is improved.

Description

Technical Field

[0001] The present application relates to the field of electric vehicles, and in particular to an electric saddle-type vehicle. Background Art

[0002] Electric motorcycles, electric four-wheelers and other vehicles need to arrange terminal resistors on the communication CAN line to achieve stable communication during driving and charging. For example, according to the signal transmission mechanism, two 120Ω terminal resistors need to be arranged at the two ends of the CAN line farthest apart on the vehicle, and one 120Ω terminal resistor is arranged in the charger. In this way, the total resistance is 40Ω when charging on the vehicle, and the total resistance is 120Ω when charging off the vehicle. This results in the total resistance value of the terminal resistors not being within the optimal range during charging, and the communication anti-interference ability is poor. Utility Model Content

[0003] In order to solve the problems in the prior art, the present application provides an electric saddle-type vehicle, whose battery pack has high communication quality during the charging process.

[0004] The present application provides an electric saddle-type vehicle, comprising:

[0005] Vehicle body;

[0006] a battery pack, the battery pack being detachably connected to the vehicle body;

[0007] Wheels, the wheels comprising a front wheel and a rear wheel;

[0008] a power system, the power system being supported by the vehicle body and electrically connected to the battery pack, the battery pack being used to provide power to the power system; the power system being used to drive at least one of the front wheels and the rear wheels;

[0009] The electric saddle-type vehicle further comprises a control circuit, wherein the control circuit comprises:

[0010] A communication transmission line, the communication transmission line comprising a first connection end and a second connection end;

[0011] A first resistor is provided at a first connection end of the communication transmission line;

[0012] A second resistor is provided at a second connection end of the communication transmission line;

[0013] a third resistor, wherein a first end of the third resistor is used to be electrically connected to the positive electrode of the battery pack, and a second end of the third resistor is used to be electrically connected to the negative electrode of the battery pack;

[0014] a first switch, wherein a first end of the first switch is used to be electrically connected to the communication transmission line, a second end of the first switch is used to be communicatively connected to the negative electrode or the positive electrode of the battery pack, and a third end of the first switch is used to be communicatively connected to the second end or the first end of the third resistor;

[0015] When the battery pack is connected to the vehicle body, the first end of the first switch is connected to the second end of the first switch, and the battery pack is communicatively connected to the communication transmission line; when the battery pack is removed from the vehicle body, the first end of the first switch is connected to the third end of the first switch.

[0016] In one embodiment, the number of the battery packs is multiple, the number of the third resistors is one or more, and the number of the first switches is consistent with the number of the third resistors;

[0017] The positive electrodes or negative electrodes of the plurality of battery packs are used for communication connection with the communication transmission line;

[0018] When the number of the third resistor is one, the first end of the third resistor is used to be electrically connected to the positive electrode of the battery pack, and the second end of the third resistor is used to be electrically connected to the negative electrode of the battery pack; the first end of the first switch is used to be electrically connected to the communication transmission line, the second end of the first switch is used to be communicatively connected to the first battery pack among the plurality of battery packs, and the third end of the first switch is used to be communicatively connected to the second end or the first end of the third resistor;

[0019] When there are multiple third resistors, the first ends of the multiple third resistors are used to be electrically connected to the positive electrodes of the multiple battery packs in a one-to-one correspondence, and the second ends of the multiple third resistors are used to be electrically connected to the negative electrodes of the multiple battery packs in a one-to-one correspondence; the first ends of the multiple first switches are used to be electrically connected to the communication transmission line, the second ends of the multiple first switches are used to be communicationally connected to the negative electrodes or positive electrodes of the multiple battery packs in a one-to-one correspondence, and the third ends of the multiple first switches are used to be communicationally connected to the second ends or the first ends of the multiple third resistors in a one-to-one correspondence.

[0020] In one embodiment, the total resistance of the first resistor and the second resistor in parallel is 50Ω to 65Ω, and the resistance of the third resistor is 50Ω to 65Ω.

[0021] In one embodiment, the total parallel resistance of the first resistor and the second resistor is 50Ω-65Ω; the number of the third resistors is m, and the total parallel resistance of the n third resistors is 50Ω-65Ω, wherein m and n are integers and 1≤n≤m.

[0022] In one embodiment, the first switch comprises a relay.

[0023] In one embodiment, the first switch comprises a field effect transistor.

[0024] In one embodiment, the electric saddle-type vehicle further comprises a charging device; the charging device is used to be electrically connected to the communication transmission line or the battery pack.

[0025] In one embodiment, the electric saddle-type vehicle further comprises a first device electrically connected to the battery pack;

[0026] The first resistor is disposed in the first device.

[0027] In one embodiment, the electric saddle-type vehicle further comprises a second device electrically connected to the battery pack;

[0028] The second resistor is disposed in the second device.

[0029] In one embodiment, the control circuit further includes a controller, which is electrically connected to the first switch and the battery pack respectively; the control circuit is used to control the first end of the first switch to be connected to the second end, or to control the first end of the first switch to be connected to the third end.

[0030] According to different charging methods, the present application controls the access of the third resistor through the first switch, so that in different charging methods, the total resistance of the terminal resistor is within an appropriate range, thereby improving the communication quality of the battery pack during the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the whole vehicle of the electric saddle-type vehicle in the embodiment of the present application.

[0032] Figure 2 It is a schematic diagram of the structure when the battery pack in an embodiment of the present application is connected to an electric saddle-type vehicle.

[0033] Figure 3 It is a schematic diagram of the structure when the battery pack in the embodiment of the present application is removed from the electric saddle-type vehicle.

[0034] Figure 4 It is a schematic diagram of the structure of an electric saddle-type vehicle in an embodiment of the present application.

[0035] Main component symbols

[0036] Electric saddle-type vehicle 100 Communication transmission line 110

[0037] The first resistor R1 The second resistor R2

[0038] Battery pack 120 Third resistor R3

[0039] First switch 130 Charging device 140

[0040] Control circuit 150 First device 160

[0041] Second device 170 Vehicle body 180

[0042] Wheel 190 Power system 200

[0043] Front wheel 191 Rear wheel 192

[0044] Controller 151

[0045] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0046] The following description will refer to the accompanying drawings to more fully describe the content of the present application. Shown in the accompanying drawings are exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals represent identical or similar components.

[0047] The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include the plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the existence or addition of one or more other features, regions, integers, steps, operations, components and / or groups thereof.

[0048] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. In addition, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant technology and the content of this application, and will not be interpreted as an idealized or overly formal meaning.

[0049] The following will describe exemplary embodiments in conjunction with the accompanying drawings. It should be noted that the components depicted in the reference drawings are not necessarily shown to scale; and the same or similar components will be given the same or similar reference numerals or similar technical terms.

[0050] Reference Figure 1 and Figure 2The present application proposes an electric saddle-type vehicle 100, comprising a vehicle body 180, a battery pack 120, wheels 190 and a power system 200. The battery pack 120 is detachably connected to the vehicle body 180. The wheels 190 include a front wheel 191 and a rear wheel 192. The power system 200 is supported by the vehicle body 180 and electrically connected to the battery pack 120, and the battery pack 120 is used to provide power to the power system 200; the power system 200 is used to drive at least one of the front wheel 191 and the rear wheel 192.

[0051] The electric saddle-type vehicle 100 further includes a control circuit 150, which includes a communication transmission line 110, a first resistor R1, a second resistor R2, a third resistor R3 and a first switch 130. The communication transmission line 110 includes a first connection end and a second connection end. The first resistor R1 is provided at the first connection end of the communication transmission line 110. The second resistor R2 is provided at the second connection end of the communication transmission line 110. The third resistor R3 The first end of the third resistor R3 is electrically connected to the positive electrode of the battery pack 120, and the second end of the third resistor R3 is electrically connected to the negative electrode of the battery pack 120. The first end of the first switch 130 is used to be electrically connected to the communication transmission line 110, the second end of the first switch 130 is communicatively connected to the negative electrode or the positive electrode of the battery pack 120, and the third end of the first switch 130 is communicatively connected to the second end or the first end of the third resistor R3. When the battery pack 120 is connected to the vehicle body 180, the battery pack 120 is communicatively connected to the communication transmission line 110, and the first end of the first switch 130 is connected to the second end of the first switch 130; when the battery pack 120 is removed from the vehicle body 180, the first end of the first switch 130 is connected to the third end of the first switch 130.

[0052] In one embodiment, the electric saddle-type vehicle 100 further includes a charging device 140 . The charging device 140 is used to be electrically connected to the communication transmission line 110 and / or the battery pack 120 , and the charging device 140 is used to charge the battery pack 120 .

[0053] Setting a terminal resistor in the signal transmission line can prevent signal reflection and ringing and improve the anti-interference ability of communication. During the charging or discharging process, the battery pack 120 can transmit battery-related information such as battery power, battery voltage, and battery power through the communication transmission line 110. The first resistor R1 and the second resistor R2 as terminal resistors can improve the anti-interference ability of the signal when it is transmitted on the communication transmission line 110.

[0054] In this embodiment, if the battery pack 120 is in the first state installed on the electric saddle-type vehicle 100, such as Figure 2As shown. When charging (charging on the vehicle), the charging device 140 is connected to the communication transmission line 110, and the first end and the second end of the first switch 130 can be connected, so that the positive electrode of the battery pack 120, the negative electrode of the battery pack 120, the communication transmission line 110, the first resistor R1, the second resistor R2 and the charging device 140 form a first communication loop, and the first resistor R1 and the second resistor R2 are connected in parallel as the terminal resistance of the first communication loop. The battery pack 120, the charging device 140 and other equipment on the electric saddle-type vehicle 100 can transmit battery-related information through the communication transmission line 110, and perform operations such as charging and discharging control. If the battery pack 120 is removed from the electric saddle-type vehicle 100, the second state, such as Figure 3 As shown. The connection between the battery pack 120 and the first switch 130 and the communication transmission line 110 is disconnected. When charging, the first end of the first switch 130 is electrically connected to the charging device 140. At this time, the first end and the third end of the first switch 130 can be connected, and the charging device 140 is connected to the battery pack 120 through the first switch 130 and the third resistor R3, so that the positive electrode of the battery pack 120, the negative electrode of the battery pack 120, the third resistor R3 and the charging device 140 form a second communication loop, and the third resistor R3 is used as the terminal resistance of the second communication loop. Battery-related information can be transmitted between the battery pack 120 and the charging device 140 through the second communication loop, and operations such as charge and discharge control can be performed.

[0055] By selecting appropriate resistance values ​​of the first resistor R1, the second resistor R2 and the third resistor R3, the resistance values ​​of the terminal resistors of the first communication loop and the second communication loop can be set within a required range. The first switch 130 can be implemented by a relay, a field effect transistor, etc. The communication transmission line 110 can be a CAN (Controller Area Network) communication transmission line 110.

[0056] For example, the terminal resistance of the electric saddle-type vehicle 100 is generally in the range of 50Ω to 65Ω. In this case, the anti-interference ability of the communication loop is better. The first resistor R1 and the second resistor R2 can be set to 120Ω, and the third resistor R3 can be set to 60Ω. When the battery pack 120 is charging on the vehicle, the first resistor R1 and the second resistor R2 are connected in parallel, and the total resistance of the terminal resistance is 60Ω. When the battery pack 120 is charging under the vehicle, the resistance value of the terminal resistance, that is, the resistance value of the third resistor R3 is 60Ω. In this way, in both charging scenarios on and off the vehicle, the terminal resistance value of the communication loop can be achieved within the range of 50Ω to 65Ω, thereby improving the communication quality of the battery pack 120 when charging. In addition, the resistance values ​​of the first resistor R1, the second resistor R2 and the third resistor R3 can also be set to other values, so that the total resistance of the first resistor R1 and the second resistor R2 in parallel is between 50Ω and 65Ω, and the resistance value of the third resistor R3 is between 50Ω and 65Ω, that is, the resistance values ​​of the terminal resistances of the first communication loop and the second communication loop are within 50Ω and 65Ω. When the terminal resistance of the electric saddle-type vehicle 100 is within other ranges, the resistance values ​​of the first resistor R1, the second resistor R2 and the third resistor R3 can also be adjusted according to the other ranges, which is not limited here.

[0057] In one embodiment, the control circuit 150 further includes a controller 151. The controller 151 is electrically connected to the first switch 130 and the battery pack 120 respectively; the controller 151 is used to control the first end of the first switch 130 to be connected to the second end or the third end.

[0058] In this embodiment, the controller 151 can control the first end and the second end of the first switch 130 to be connected when the battery pack 120 is installed on the electric saddle-type vehicle 100 and the charging device 140 is connected; when the battery pack 120 is not installed on the electric saddle-type vehicle 100 and the charging device 140 is connected, the first end and the second end of the first switch 130 are controlled to be connected. The controller 151 can be implemented by a chip such as a microprocessor or FPGA. Alternatively, the controller 151 can be a battery management system in the battery pack 120.

[0059] Reference Figure 4In one embodiment, the number of the battery packs 120 is multiple, the number of the third resistors R3 is one or more, and the number of the first switches 130 is consistent with the number of the third resistors R3. When the number of the third resistor R3 is one, the first end and the second end of the third resistor R3 are respectively electrically connected to the positive electrode and the negative electrode of the first battery pack among the multiple battery packs 120; the first end of the first switch 130 is used to be electrically connected to the communication transmission line 110, the second end of the first switch 130 is electrically connected to the negative electrode or the positive electrode of the first battery pack, and the third end of the first switch 130 is electrically connected to the second end or the first end of the third resistor R3. When the number of the third resistor R3 is multiple, the positive electrodes or negative electrodes of the multiple battery packs 120 are used to be electrically connected to the communication transmission line 110. The first ends of the multiple third resistors R3 are electrically connected to the positive electrodes of the multiple battery packs 120 in a one-to-one correspondence, and the second ends of the multiple third resistors R3 are electrically connected to the negative electrodes of the multiple battery packs 120 in a one-to-one correspondence. The first ends of the plurality of first switches 130 are used to be electrically connected to the communication transmission line 110, the second ends of the plurality of first switches 130 are electrically connected to the negative electrodes or positive electrodes of the plurality of battery packs 120 in a one-to-one correspondence, and the third ends of the plurality of first switches 130 are electrically connected to the second ends or first ends of the plurality of third resistors R3 in a one-to-one correspondence. The first battery pack may be any one of the plurality of battery packs 120.

[0060] In this embodiment, by controlling the first end of the first switch 130 to be connected to the second end or the third end, the number of connected third resistors R3 can be controlled, thereby controlling the total resistance of the terminal resistors of the first communication loop or the second communication loop to be within a suitable range.

[0061] In one embodiment, the total parallel resistance of the first resistor R1 and the second resistor R2 is 50Ω-65Ω; the number of the third resistors R3 is m, and the total parallel resistance of the n third resistors R3 is 50Ω-65Ω, 1≤n≤m.

[0062] For example, the number of third resistors R3 is 2, and n is also 2. The first resistor R1, the second resistor R2 and the two third resistors R3 can all be set to 120Ω. When the battery pack 120 is charging on the vehicle, the first resistor R1 and the second resistor R2 are connected in parallel, and the total resistance of the terminal resistance is 60Ω. When the battery pack 120 is charging under the vehicle, the two third resistors R3 are connected in parallel, and the resistance of the terminal resistance is 60Ω. In this way, in both charging scenarios on and off the vehicle, the terminal resistance of the communication loop can be achieved within 50Ω~65Ω, thereby improving the communication quality of the battery pack 120 when charging.

[0063] Alternatively, the number of third resistors R3 is 1, and n is 1. Both the first resistor R1 and the second resistor R2 can be set to 120Ω. When the battery pack 120 is charging on the vehicle, the first resistor R1 and the second resistor R2 are connected in parallel, and the total resistance of the terminal resistance is 60Ω. When the battery pack 120 is charging under the vehicle, only one third resistor R3 is connected, and the resistance of the terminal resistance is 60Ω. In this way, in both charging scenarios on and off the vehicle, the terminal resistance of the communication loop can be achieved within 50Ω~65Ω, thereby improving the communication quality of the battery pack 120 when charging.

[0064] In addition, the number of battery packs 120 can also be set to 3, 4, 5, etc., and the number of third resistors R3 can also be set to 3, 4, 5, etc., without limitation. Multiple battery packs 120 can be individually connected to the charging device 140 for charging, and the resistance of the third resistor R3 can be set within a suitable terminal resistance range. Alternatively, multiple battery packs 120 can be connected to the charging device 130 in groups of two, three or more for charging, and the total resistance of the multiple third resistors R3 in parallel corresponding to the multiple battery packs 120 in the group can be set within a suitable terminal resistance range.

[0065] In one embodiment, the electric saddle-type vehicle 100 further includes a first device 160 . The first resistor R1 is disposed in the first device 160 .

[0066] In this embodiment, the first device 160 may be an electronic device such as a vehicle body controller, a dashboard, or a lamp.

[0067] In one embodiment, the electric saddle-type vehicle 100 further includes a second device 170 . The second resistor R2 is disposed in the second device 170 .

[0068] In this embodiment, the second device 170 may be an electronic device such as a body controller, a dashboard, a lamp, etc. The first device 160 and the second device 170 may be arranged according to the actual structure of the electric saddle-type vehicle 100 so that the first device 160 and the second device 170 are located at two ends of the communication transmission line 110 that are far apart.

[0069] According to different charging modes, the present application controls the access of the third resistor R3 through the first switch 130, so that in different charging modes, the total resistance of the terminal resistor is within an appropriate range, thereby improving the communication quality of the battery pack 120 during the charging process.

[0070] In the above, the specific implementation of the present application is described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific implementation of the present application without departing from the spirit and scope of the present application. These changes and substitutions are all within the scope defined by the present application.

Claims

1. An electric saddle-type vehicle, comprising: Vehicle body; a battery pack, the battery pack being detachably connected to the vehicle body; Wheels, the wheels comprising a front wheel and a rear wheel; a power system, the power system being supported by the vehicle body and electrically connected to the battery pack, the battery pack being used to provide power to the power system; the power system being used to drive at least one of the front wheels and the rear wheels; Characterized in that the electric saddle-type vehicle further comprises a control circuit, and the control circuit comprises: A communication transmission line, the communication transmission line comprising a first connection end and a second connection end; A first resistor is provided at a first connection end of the communication transmission line; A second resistor is provided at a second connection end of the communication transmission line; a third resistor, wherein a first end of the third resistor is used to be electrically connected to the positive electrode of the battery pack, and a second end of the third resistor is used to be electrically connected to the negative electrode of the battery pack; a first switch, wherein a first end of the first switch is used to be electrically connected to the communication transmission line, a second end of the first switch is used to be communicatively connected to the negative electrode or the positive electrode of the battery pack, and a third end of the first switch is used to be communicatively connected to the second end or the first end of the third resistor; When the battery pack is connected to the vehicle body, the first end of the first switch is connected to the second end of the first switch, and the battery pack is communicatively connected to the communication transmission line; when the battery pack is removed from the vehicle body, the first end of the first switch is connected to the third end of the first switch.

2. The electric saddle-type vehicle according to claim 1, characterized in that: There are multiple battery packs, there are one or more third resistors, and the number of the first switches is consistent with the number of the third resistors; The positive electrodes or negative electrodes of the plurality of battery packs are used for communication connection with the communication transmission line; When the number of the third resistor is one, the first end of the third resistor is used to be electrically connected to the positive electrode of the battery pack, and the second end of the third resistor is used to be electrically connected to the negative electrode of the battery pack; the first end of the first switch is used to be electrically connected to the communication transmission line, the second end of the first switch is used to be communicatively connected to the first battery pack among the plurality of battery packs, and the third end of the first switch is used to be communicatively connected to the second end or the first end of the third resistor; When there are multiple third resistors, the first ends of the multiple third resistors are used to be electrically connected to the positive electrodes of the multiple battery packs in a one-to-one correspondence, and the second ends of the multiple third resistors are used to be electrically connected to the negative electrodes of the multiple battery packs in a one-to-one correspondence; the first ends of the multiple first switches are used to be electrically connected to the communication transmission line, the second ends of the multiple first switches are used to be communicationally connected to the negative electrodes or positive electrodes of the multiple battery packs in a one-to-one correspondence, and the third ends of the multiple first switches are used to be communicationally connected to the second ends or the first ends of the multiple third resistors in a one-to-one correspondence.

3. The electric saddle-type vehicle according to claim 1 or 2, characterized in that: The total parallel resistance of the first resistor and the second resistor is 50Ω to 65Ω, and the resistance of the third resistor is 50Ω to 65Ω.

4. The electric saddle-type vehicle according to claim 2, characterized in that: The total parallel resistance of the first resistor and the second resistor is 50Ω to 65Ω; the number of the third resistors is m, and the total parallel resistance of n third resistors is 50Ω to 65Ω, wherein m and n are integers and 1≤n≤m.

5. The electric saddle-type vehicle according to claim 1, characterized in that: The first switch includes a relay.

6. The electric saddle-type vehicle according to claim 1, characterized in that: The first switch includes a field effect transistor.

7. The electric saddle-type vehicle according to claim 1, characterized in that: The electric saddle-type vehicle further comprises a charging device; the charging device is used to be electrically connected to the communication transmission line or the battery pack.

8. The electric saddle-type vehicle according to claim 1, characterized in that: The electric saddle-type vehicle further includes a first device electrically connected to the battery pack; The first resistor is disposed in the first device.

9. The electric saddle-type vehicle according to claim 1, characterized in that: The electric saddle-type vehicle further includes a second device electrically connected to the battery pack; The second resistor is disposed in the second device.

10. The electric saddle-type vehicle according to claim 1, characterized in that: The control circuit also includes a controller, which is electrically connected to the first switch and the battery pack respectively; the control circuit is used to control the first end of the first switch to be connected to the second end, or to control the first end of the first switch to be connected to the third end.

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