Electric two-wheeled vehicle

Abstract

The utility model provides an electric two-wheeled vehicle. The electric two-wheeled vehicle comprises an electrical system, the electrical system comprises an electricity load and a vehicle body controller, and the electrical system further comprises a power supply control module. The power supply control module comprises a charging and discharging circuit, an active discharging circuit, a control circuit and a voltage detection circuit. The control circuit is electrically connected with the charging and discharging circuit and the active discharging circuit. The control circuit controls the charging and discharging circuit to be switched on when receiving the power-on signal; and when the fault signal is received, the charging and discharging circuit is controlled to be switched off, and the active discharging circuit is controlled to be switched on. The control circuit controls the charging and discharging circuit to be switched off and the active discharging circuit to be switched on when the battery discharging loop breaks down, so that power supply of the power battery is cut off, meanwhile, active discharging is conducted on the electricity utilization load end, the voltage of the electricity utilization load end is rapidly reduced to the safe voltage, and the safety of the electric two-wheeled vehicle is improved.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more particularly to an electric two-wheeled vehicle. Background Technology

[0002] Current electric two-wheelers lack active discharge circuits in their battery management systems. When the bus voltage is abnormal or the circuit fails, it takes a long time for the bus voltage to drop to a safe level. This can easily lead to safety accidents involving electric two-wheelers. Utility Model Content

[0003] In order to solve the problems in the prior art, this application provides an electric two-wheeled vehicle that is beneficial to improving the safety of electric two-wheeled vehicles.

[0004] This application provides an electric two-wheeled vehicle, the electric two-wheeled vehicle comprising:

[0005] Frame;

[0006] A body panel that at least partially covers the vehicle frame;

[0007] A walking system, which is connected to the vehicle frame;

[0008] A powertrain, including a power battery; the powertrain is at least partially supported by the vehicle frame, and the power battery is used to drive the walking system;

[0009] Electrical systems, including electrical loads and body control systems;

[0010] The vehicle body controller outputs a power-on signal when the electric two-wheeler is started; and outputs a fault signal when a fault is detected in the power battery or the electrical load.

[0011] The electrical system further includes a power supply control module, which includes:

[0012] A charging and discharging circuit, wherein the first end of the charging and discharging circuit is electrically connected to the power battery, and the second end of the charging and discharging circuit is used to be electrically connected to the first end of the electrical load;

[0013] An active discharge circuit is provided, wherein a first terminal of the active discharge circuit is electrically connected to a second terminal of the charging and discharging circuit, and the second terminal of the active discharge circuit is used to be electrically connected to a second terminal of the electrical load; the active discharge circuit is used to form a load discharge circuit with the electrical load when it is in the conducting state.

[0014] The control circuit is also electrically connected to the charging / discharging circuit and the active discharge circuit, respectively; the control circuit is used to control the charging / discharging circuit to conduct when a power-on signal is received; and to control the charging / discharging circuit to disconnect and the active discharge circuit to conduct when a fault signal is received.

[0015] In one embodiment, the charging and discharging circuit includes:

[0016] A pre-charging unit, wherein a first terminal of the pre-charging unit is electrically connected to the power battery, a second terminal of the pre-charging unit is electrically connected to the electrical load, and a third terminal of the pre-charging unit is electrically connected to the control circuit; the second terminal of the pre-charging unit is used to output a first voltage; the control circuit is used to control the pre-charging unit to be turned on for a preset duration when the power-on signal is received.

[0017] A charging and discharging unit, wherein a first end of the charging and discharging unit is electrically connected to the power battery, a second end of the charging and discharging unit is electrically connected to the electrical load, and a third end of the charging and discharging unit is electrically connected to the control circuit; the second end of the charging and discharging unit is used to output a second voltage; the second voltage is greater than the first voltage; the control circuit is used to control the pre-charging unit to disconnect after the preset time period ends, and to control the charging and discharging unit to turn on.

[0018] In one embodiment, the pre-charging unit includes a switching component and a resistor;

[0019] The first end of the switch component is electrically connected to the power battery, the second end of the switch component is electrically connected to the first end of the resistor, the third end of the active discharge circuit is electrically connected to the control circuit, and the second end of the resistor is used to be electrically connected to the electrical load.

[0020] The control circuit is used to control the switching component to conduct for a preset duration when the power-on signal is received; and to control the switching component to disconnect after the preset duration has elapsed.

[0021] In one embodiment, the charging / discharging unit includes a switching component;

[0022] The first end of the switch component is electrically connected to the power battery, the second end of the switch component is electrically connected to the electrical load, and the third end of the switch component is electrically connected to the control circuit; the control circuit is used to control the switch component to conduct after the preset time period ends.

[0023] In one embodiment, the power supply control module further includes a voltage detection circuit, which is electrically connected to the control circuit. The voltage detection circuit is used to detect the voltage at the second terminal of the charging and discharging circuit and output a corresponding detection voltage.

[0024] The control circuit is also used to output an abnormal signal indicating a short circuit in the charging and discharging circuit when the charging and discharging circuit is disconnected, the active discharging circuit is turned on, and the detection voltage is maintained for a first preset duration greater than the first preset voltage.

[0025] In one embodiment, the electrical system further includes a display device;

[0026] The display device is electrically connected to the control circuit; the display device is used to display corresponding abnormal information based on the control of the abnormal signal.

[0027] In one embodiment, the active discharge circuit includes a resistor and a switching component;

[0028] The first end of the resistor is electrically connected to the output end of the charging and discharging circuit, the second end of the resistor is electrically connected to the first end of the switching component, the second end of the switching component is electrically connected to the second end of the electrical load, and the third end of the switching component is electrically connected to the control circuit.

[0029] The control circuit is used to control the switching component to conduct when a fault signal is received.

[0030] In one embodiment, the switching component includes a relay or a MOSFET; when the switching component includes a relay, the control input terminal of the relay is the third terminal of the switching component.

[0031] When the switching component includes a MOS transistor, the gate of the MOS transistor is the third terminal of the switching component.

[0032] In one embodiment, the power supply control module further includes a current detection circuit;

[0033] When the charging and discharging circuit is turned on, the power battery, the charging and discharging circuit, and the electrical load form a battery discharge circuit.

[0034] The current detection circuit is connected in series in the battery discharge circuit; the current detection circuit is electrically connected to the control circuit; the current detection circuit is used to detect the current in the battery discharge circuit.

[0035] The control circuit is used to control the charging and discharging circuit to disconnect when the current in the battery discharge circuit is greater than a preset current.

[0036] In one embodiment, the power supply control module further includes a fuse;

[0037] The fuse is connected in series in the battery discharge circuit; the fuse is used to disconnect when the current in the battery discharge circuit is greater than a preset current.

[0038] This application utilizes a control circuit to disconnect the charging / discharging circuit and activate the active discharge circuit when a fault occurs in the battery discharge circuit. This disconnects the power supply to the battery and simultaneously actively discharges the load, rapidly reducing the voltage at the load to a safe level, thus improving the safety of the electric two-wheeler. Furthermore, the control circuit can also detect faults in the charging / discharging circuit by controlling the active discharge circuit, allowing for timely troubleshooting without the need for an additional detection circuit, which helps reduce circuit size. Attached Figure Description

[0039] Figure 1 This is a structural diagram of an electric two-wheeled vehicle according to an embodiment of this application.

[0040] Figure 2 This is a module structure diagram of a power supply control module according to an embodiment of this application.

[0041] Figure 3 This is a structural diagram of a power supply control module according to an embodiment of this application.

[0042] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0043] The following description will refer to the accompanying drawings to provide a more complete picture of the present application. The drawings illustrate exemplary embodiments of the present application. However, the present application may be implemented in many different forms and should not be construed as 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 denote the same or similar components.

[0044] Reference Figure 1 and Figure 2This application discloses an electric two-wheeled vehicle 100, which includes a frame 11, a body panel 12, a running system 13, a powertrain 14, an electrical system 15, and a body controller 19. The body panel 12 at least partially covers the frame 11. The running system 13 is connected to the frame 11. The powertrain 14 includes a power battery 141; the powertrain is at least partially supported by the frame 11, and the power battery 141 is used to drive the running system 13. The electrical system 15 includes an electrical load 151 and a body controller 152. The body controller 152 is used to output a power-on signal when the electric two-wheeled vehicle starts; and to output a fault signal when a fault is detected in the power battery 141 or the electrical load 151. The electric two-wheeled vehicle 100 can be a two-wheeled electric vehicle or a four-wheeled electric vehicle.

[0045] The electrical system 15 also includes a power supply control module 16, which includes a charging / discharging circuit 161, an active discharge circuit 162, and a control circuit 163. The first terminal of the charging / discharging circuit 161 is electrically connected to the power battery 141, and the second terminal is electrically connected to the first terminal of the electrical load 151. The electrical load 151 can be a power system, vehicle lights, instrument panel, etc. The first terminal of the active discharge circuit 162 is electrically connected to the second terminal of the charging / discharging circuit 161, and the second terminal of the active discharge circuit 162 is electrically connected to the second terminal of the electrical load 151. When in a conducting state, the active discharge circuit 162 forms a discharge circuit with the electrical load 151. The control circuit 163 is electrically connected to both the charging / discharging circuit 161 and the active discharge circuit 162. The control circuit 163 controls the charging / discharging circuit 161 to conduct when a power-on signal is received; and controls the active discharge circuit 162 to conduct and the charging / discharging circuit 161 to disconnect when a fault signal is received.

[0046] In this embodiment, when the electric two-wheeler 100 is started, the user can trigger the vehicle body controller 152 to output a power-on signal to the control circuit 163 via a key or button operation. The control circuit 163 controls the charging and discharging circuit 161 to conduct according to the power-on signal, forming a battery discharge circuit between the power battery 141, the charging and discharging circuit 161, and the electrical load 151 to supply power to the electrical load 151. If a fault occurs in the battery discharge circuit, such as a short circuit, overvoltage, or overtemperature, the control circuit 163 can control the charging and discharging circuit 161 to disconnect and the active discharge circuit 162 to conduct, stopping the power supply to the electrical load 151. Simultaneously, the active discharge circuit 162 and the electrical load 151 form a discharge circuit for the electrical load 151 to quickly reduce the voltage of the electrical load 151 and prevent damage to circuit components. The fault in the battery discharge circuit can be detected by a current detection circuit, a voltage detection circuit, a temperature sensor, etc., and a corresponding fault signal can be output to the control circuit 163. Alternatively, the control circuit 163 can communicate with the battery management circuit. If a fault occurs in the battery discharge circuit, the battery management circuit can output a corresponding fault signal to the control circuit 163. The control circuit 163 can be implemented using a chip with control functions, such as a microprocessor or an FPGA (Field Programmable Gate Array), or it can be a battery management circuit.

[0047] In one embodiment, the control circuit 163 is a battery management circuit. The active discharge circuit 162 can be integrated into the battery management circuit. In this way, the battery management circuit can control both the charging and discharging of the power battery 141 and the active discharge of the electrical load 151.

[0048] In some embodiments, the power supply control module 16 further includes a voltage detection circuit 164, which is electrically connected to the control circuit 163. The voltage detection circuit 164 is used to detect the voltage at the second terminal of the charging / discharging circuit 161 and output a corresponding detection voltage. The control circuit 163 is also used to output an abnormal signal indicating a short circuit in the charging / discharging circuit 161 when the charging / discharging circuit 161 is disconnected, the active discharge circuit 162 is turned on, and the detection voltage remains greater than a first preset voltage for a first preset duration.

[0049] In this embodiment, the voltage detection circuit 164 can be implemented using a voltage divider resistor and a comparator. The voltage detection circuit 164 can be integrated into the control circuit 163 or set up separately. After the voltage divider resistor divides the voltage at the second terminal of the charging / discharging circuit 161, the comparator compares the divided voltage with a reference voltage. If the divided voltage is greater than the reference voltage, the control circuit 163 outputs an abnormal signal indicating a short circuit in the charging / discharging circuit 161. This abnormal signal can be an audio signal, a display signal, a control signal, etc. For example, the control circuit 163 can output a display signal to the instrument panel of the electric two-wheeler 100 to control the instrument panel to display corresponding fault information. Alternatively, the control signal 163 can output an audio signal to the audio device of the electric two-wheeler 100 to control the audio device to broadcast corresponding fault information. Simultaneously, the control circuit 163 can also control the power battery 141 to stop working, preventing further damage to the electric two-wheeler 100.

[0050] The control circuit 163 can also detect whether the charging and discharging circuit 161 is functioning properly via the active discharge circuit 162. The control circuit 163 controls the active discharge circuit 162 to conduct, forming a discharge circuit for the electrical load 151 with the electrical load 151. The voltage generated in the discharge circuit of the electrical load 151 differs between normal and short-circuit states. The control circuit 163 can determine whether the charging and discharging circuit 161 is functioning properly or short-circuited by detecting the voltage in the discharge circuit of the electrical load 151 and comparing it with a first preset voltage.

[0051] For example, during short-circuit detection, control circuit 163 controls the charging / discharging circuit 161 to disconnect and the active discharge circuit 162 to turn on. If the charging / discharging circuit 161 is normal, the battery discharge circuit is disconnected, the electrical load 151 discharge circuit is turned on, and the voltage at the electrical load terminal is 0. If a short circuit occurs in the charging / discharging circuit 161, both the battery discharge circuit and the electrical load 151 discharge circuit are turned on, and the voltage at the electrical load terminal is approximately the same as the voltage of the power battery 141.

[0052] If a short-circuit detection is performed when the electric two-wheeler 100 is powered on or immediately after power-off, the voltage at the electrical load terminal will be high. Control circuit 163 controls the charging / discharging circuit 161 to disconnect and the active discharge circuit 162 to connect. If the charging / discharging circuit 161 is functioning normally, the battery discharge circuit is disconnected, and the electrical load 151 discharge circuit is connected. The voltage at the electrical load terminal will drop to 0 within a short time after being discharged through the electrical load 151 discharge circuit. If a short circuit occurs in the charging / discharging circuit 161, both the battery discharge circuit and the electrical load 151 discharge circuit are connected, and the voltage at the electrical load terminal remains high.

[0053] During open circuit detection, control circuit 163 controls the charging / discharging circuit 161 to conduct and the active discharge circuit 162 to disconnect. If the charging / discharging circuit 161 is normal, the battery discharge circuit is conducting, the electrical load 151 discharge circuit is disconnected, and the voltage at the electrical load terminal is approximately the same as the voltage of the power battery 141. If the charging / discharging circuit 161 is open, both the battery discharge circuit and the electrical load 151 discharge circuit are disconnected, and the voltage at the electrical load terminal is 0.

[0054] Thus, the control circuit 163 can perform short-circuit detection on the charging and discharging circuit 161 based on the active discharge circuit 162, and output an abnormal signal when the charging and discharging circuit 161 is short-circuited, so as to control the power battery 141 to stop working and remind the user to check and repair it in time. Since there are various electronic components in the battery discharge circuit and the electrical load 151 discharge circuit, the detection voltage may have errors. The first preset voltage can be set according to the actual application and is not limited here.

[0055] This application utilizes control circuit 163 to disconnect charging / discharging circuit 161 and activate active discharge circuit 162 when a fault occurs in the battery discharge circuit. This disconnects the power supply to the power battery 141 and simultaneously actively discharges the electrical load, rapidly reducing the voltage at the load terminal to a safe level, thus improving the safety of the electric two-wheeled vehicle 100. Furthermore, control circuit 163 can also detect faults in charging / discharging circuit 161 by controlling active discharge circuit 162, allowing for timely troubleshooting of faults in charging / discharging circuit 161 without requiring an additional detection circuit, which helps reduce circuit size.

[0056] Reference Figure 3 In one embodiment, the charging and discharging circuit 161 includes a pre-charging unit 161a and a charging and discharging unit 161b. A first terminal of the pre-charging unit 161a is electrically connected to the power battery 141, a second terminal of the pre-charging unit 161a is electrically connected to the electrical load 151, and a third terminal of the pre-charging unit 161a is electrically connected to the control circuit 163. The second terminal of the pre-charging unit 161a is used to output a first voltage. The control circuit 163 is used to control the pre-charging unit 161a to conduct for a preset duration upon receiving a power-on signal. The charging and discharging unit 161b has a first terminal electrically connected to the power battery 141, a second terminal electrically connected to the electrical load 151, and a third terminal electrically connected to the control circuit 163. The second terminal of the charging and discharging unit 161b is used to output a second voltage, which is greater than the first voltage. The control circuit 163 is used to control the pre-charging unit 161a to disconnect after a preset time period and to control the charging and discharging unit 161b to turn on.

[0057] In this embodiment, when the electric two-wheeler 100 is powered on, the control circuit 163 receives a power-on signal and controls the pre-charging unit 161a to conduct for a preset time. Within the preset time, the pre-charging unit 161a converts the voltage of the power battery 141 into a smaller first voltage output to slowly charge the capacitor in the electrical load 151, avoiding the direct output of the voltage of the power battery 141 to the electrical load terminal upon power-on, which could cause a sudden large voltage and damage the electrical load 151.

[0058] After the preset time expires, the capacitor in the electrical load 151 has been charged to a higher voltage. The control circuit 163 controls the active discharge circuit 162 to disconnect and the charging / discharging unit 161b to turn on, so that the charging / discharging unit 161b transfers the voltage of the power battery 141 to the electrical load 151 for power supply. The first voltage and the second voltage can be set according to the actual application. For example, the first voltage can be set to be less than the voltage of the power battery 141, and the second voltage can be set to be equal to the voltage of the power battery 141.

[0059] In one embodiment, the pre-charging unit 161a includes a switching component Q1 and a first resistor R1. A first terminal of the switching component Q1 is electrically connected to the power battery 141, a second terminal of the switching component Q1 is electrically connected to the first terminal of the first resistor R1, a third terminal of the active discharge circuit 162 is electrically connected to the control circuit 163, and a second terminal of the first resistor R1 is used to be electrically connected to the electrical load 151. The control circuit 163 is used to control the switching component Q1 to conduct for a preset duration upon receiving a power-on signal; and to control the switching component Q1 to deactivate after the preset duration.

[0060] In this embodiment, the switching component Q1 can be implemented using a relay, MOSFET, or other similar devices. When the switching component Q1 is turned on, the first resistor R1 can be used to limit the current output from the power battery 141 to the electrical load 151, protecting the circuit components from damage. The resistance value of the first resistor R1 can be set according to actual needs and is not limited here.

[0061] In one embodiment, the charging / discharging unit 161b includes a switching component Q2. A first end of the switching component Q2 is electrically connected to the power battery 141, a second end of the switching component Q2 is electrically connected to the electrical load 151, and a third end of the switching component Q2 is electrically connected to the control circuit 163; the control circuit 163 is used to control the switching component Q2 to conduct after a preset time period.

[0062] In this embodiment, the switching component Q2 can be implemented using a relay, MOSFET, or other similar devices. After pre-charging is complete, the switching component Q2 is turned on, transmitting the voltage of the power battery 141 to the electrical load 151 to provide power, thus supplying the electrical load 151 with the voltage required for normal operation.

[0063] In one embodiment, the control circuit 163 is further configured to output a first abnormal signal indicating a short circuit in the pre-charge unit 161a when both the pre-charge unit 161a and the charge / discharge unit 161b are disconnected and the detected voltage is a second preset voltage. The control circuit 163 is also configured to output a second abnormal signal indicating a short circuit in the charge / discharge unit 161b when both the pre-charge unit 161a and the charge / discharge unit 161b are disconnected and the detected voltage is consistent with the voltage of the power battery 141; the second preset voltage is greater than the first preset voltage and less than the voltage of the power battery 141.

[0064] In this embodiment, the control circuit 163 can also perform fault detection on the pre-charge unit 161a and the charge / discharge unit 161b through the active discharge circuit 162.

[0065] For example, during short-circuit detection, control circuit 163 controls the pre-charge unit 161a to disconnect, the charge / discharge unit 161b to disconnect, and the active discharge circuit 162 to turn on. If the pre-charge unit 161a and the charge / discharge unit 161b are normal, the battery discharge circuit is disconnected, the discharge circuit of the electrical load 151 is turned on, and the voltage at the electrical load terminal is 0. If the pre-charge unit 161a is short-circuited, the battery discharge circuit is turned on through the pre-charge unit 161a, and the voltage at the electrical load terminal is U2 = U1 × R / (R + R1), where R is the resistance of the active discharge circuit 162, R1 is the resistance of the pre-charge unit 161a, and U1 is the voltage of the power battery. If the charge / discharge unit 161b is short-circuited, the battery discharge circuit is turned on through the charge / discharge unit 161b, and the voltage at the electrical load terminal is the voltage of the power battery 141.

[0066] Thus, the control circuit 163 can determine the status of the pre-charging unit 161a and the charging / discharging unit 161b based on the voltage on the discharge circuit of the electrical load 151. When either the pre-charging unit 161a or the charging / discharging unit 161b fails, it outputs a corresponding abnormal signal to control the power battery 141 to stop working and remind the user to troubleshoot and repair it promptly. Note that since various electronic components exist in the battery discharge circuit and the electrical load 151 discharge circuit, there may be errors in the voltage on the circuit. The second preset voltage can be set according to the actual application and is not limited here.

[0067] In one embodiment, the control circuit 163 is further configured to output a third abnormal signal indicating an open circuit in the pre-charge unit 161a when the pre-charge unit 161a is turned on, the charge / discharge unit 161b is turned off, and the detection voltage is 0. The control circuit is also configured to output a fourth abnormal signal indicating an open circuit in the charge / discharge unit 161b when the pre-charge unit 161a is turned off, the charge / discharge unit 161b is turned on, and the detection voltage is 0. This achieves open circuit detection for both the pre-charge unit 161a and the charge / discharge unit 161b.

[0068] In one embodiment, the electrical system 15 further includes a display device 153. The display device 153 is electrically connected to the control circuit 163; the display device 153 is used to display corresponding abnormal information based on the control of abnormal signals. The display device 153 may be an instrument panel, warning light, etc., of the electric two-wheeled vehicle 100.

[0069] In one embodiment, the active discharge circuit 162 includes a second resistor R2 and a switching component Q3. The first end of the second resistor R2 is electrically connected to the output terminal of the charge / discharge circuit 161, and the second end of the second resistor R2 is electrically connected to the first end of the switching component Q3. The second end of the switching component Q3 is electrically connected to the second end of the electrical load 151, and the third end of the switching component Q3 is electrically connected to the control circuit 163. The control circuit 163 is used to control the active discharge circuit 162 to conduct when a fault signal is received. The switching component Q3 can be implemented using a relay, a MOSFET, or the like. When the switching component Q3 includes a relay, the control input terminal of the relay is the third end of the switching component Q3. When the switching component Q3 includes a MOSFET, the gate of the MOSFET is the third end of the switching component Q3.

[0070] In this embodiment, after the active discharge circuit 162 is turned on, the electrical load terminal can discharge through the second resistor R2, quickly reducing the voltage to a safe voltage.

[0071] In one embodiment, the power supply control module 16 further includes a voltage detection circuit 164. The voltage detection circuit 164 is electrically connected to the control circuit 163 and is used to detect the voltage at the second terminal of the charging and discharging circuit 161. The voltage detection circuit 164 can be implemented using voltage divider resistors.

[0072] In one embodiment, the electric two-wheeler 100 further includes a current detection circuit 165. The current detection circuit 165 is connected in series in the battery discharge circuit and is electrically connected to the control circuit 163. The current detection circuit 165 is used to detect the current in the battery discharge circuit. The control circuit 163 is used to control the charging / discharging circuit 161 to disconnect when the current in the battery discharge circuit exceeds a preset current. The current detection circuit 165 can be implemented using a current detection chip, a shunt, or the like. When the current in the battery discharge circuit exceeds the preset current, the control circuit 163 can promptly disconnect the charging / discharging circuit 161 to prevent damage to circuit components caused by high current. The preset current can be set according to the discharge current of the power battery 141 and the operating current of the electrical load 151.

[0073] In one embodiment, the electric two-wheeler 100 further includes a fuse 166. When the charging and discharging circuit 161 is turned on, the power battery 141, the charging and discharging circuit 161, and the electrical load 151 form a battery discharge circuit. The fuse 166 is connected in series in the battery discharge circuit; the fuse 166 is used to disconnect when the current in the battery discharge circuit is greater than a preset current.

[0074] In this embodiment, when the current in the battery discharge circuit is greater than the preset current, the fuse 166 melts due to the increased temperature under high current, thus protecting the circuit components in the battery discharge circuit.

[0075] The specific embodiments of this application have been described above with reference to the accompanying drawings. However, those skilled in the art will understand that various changes and substitutions can be made to the specific embodiments of this application without departing from the spirit and scope of this application. All such changes and substitutions fall within the scope defined by this application.

Claims

1. An electric two-wheeled vehicle, comprising: Frame; A body panel that at least partially covers the vehicle frame; A walking system, which is connected to the vehicle frame; A powertrain, including a power battery; the powertrain is at least partially supported by the vehicle frame, and the power battery is used to drive the walking system; Electrical systems, including electrical loads and body control systems; The vehicle body controller outputs a power-on signal when the electric two-wheeler is started; and outputs a fault signal when a fault is detected in the power battery or the electrical load. The electrical system is characterized in that it further includes a power supply control module, which comprises: A charging and discharging circuit, wherein the first terminal of the charging and discharging circuit is electrically connected to the power battery, and the second terminal of the charging and discharging circuit is electrically connected to the first terminal of the electrical load; An active discharge circuit is provided, wherein a first terminal of the active discharge circuit is electrically connected to a second terminal of the charging and discharging circuit, and a second terminal of the active discharge circuit is electrically connected to a second terminal of the electrical load; when the active discharge circuit is in the conducting state, it forms a load discharge circuit with the electrical load. A control circuit is electrically connected to the charging / discharging circuit and the active discharge circuit, respectively; the control circuit controls the charging / discharging circuit to turn on when it receives the power-on signal; and controls the charging / discharging circuit to turn off and the active discharge circuit to turn on when it receives the fault signal.

2. The electric two-wheeled vehicle as described in claim 1, characterized in that, The charging and discharging circuit includes: A pre-charging unit, wherein a first terminal of the pre-charging unit is electrically connected to the power battery, a second terminal of the pre-charging unit is electrically connected to the electrical load, and a third terminal of the pre-charging unit is electrically connected to the control circuit; the second terminal of the pre-charging unit is used to output a first voltage; the control circuit is used to control the pre-charging unit to be turned on for a preset duration when the power-on signal is received. A charging and discharging unit, wherein a first end of the charging and discharging unit is electrically connected to the power battery, a second end of the charging and discharging unit is electrically connected to the electrical load, and a third end of the charging and discharging unit is electrically connected to the control circuit; the second end of the charging and discharging unit is used to output a second voltage; the second voltage is greater than the first voltage; the control circuit is used to control the pre-charging unit to disconnect after the preset time period ends, and to control the charging and discharging unit to turn on.

3. The electric two-wheeled vehicle as described in claim 2, characterized in that, The pre-charging unit includes a switching component and a resistor; The first end of the switch component is electrically connected to the power battery, the second end of the switch component is electrically connected to the first end of the resistor, the third end of the active discharge circuit is electrically connected to the control circuit, and the second end of the resistor is used to be electrically connected to the electrical load. The control circuit is used to control the switching component to conduct for a preset duration when the power-on signal is received; and to control the switching component to disconnect after the preset duration has elapsed.

4. The electric two-wheeled vehicle as described in claim 2, characterized in that, The charging and discharging unit includes a switching component; The first end of the switch component is electrically connected to the power battery, the second end of the switch component is electrically connected to the electrical load, and the third end of the switch component is electrically connected to the control circuit; the control circuit is used to control the switch component to conduct after the preset time period ends.

5. The electric two-wheeled vehicle as described in claim 1, characterized in that, The power supply control module further includes a voltage detection circuit, which is electrically connected to the control circuit. The voltage detection circuit is used to detect the voltage at the second terminal of the charging and discharging circuit and output the corresponding detection voltage. The control circuit is also used to output an abnormal signal indicating a short circuit in the charging and discharging circuit when the charging and discharging circuit is disconnected, the active discharging circuit is turned on, and the detection voltage is continuously greater than the preset voltage for a preset duration.

6. The electric two-wheeled vehicle as described in claim 5, characterized in that, The electrical system also includes a display device; The display device is electrically connected to the control circuit; the display device displays corresponding abnormal information based on the control of the abnormal signal.

7. The electric two-wheeled vehicle as described in claim 1, characterized in that, The active discharge circuit includes resistors and switching components; The first end of the resistor is electrically connected to the output end of the charging and discharging circuit, the second end of the resistor is electrically connected to the first end of the switching component, the second end of the switching component is electrically connected to the second end of the electrical load, and the third end of the switching component is electrically connected to the control circuit. The control circuit controls the switching component to turn on when it receives a fault signal.

8. The electric two-wheeled vehicle as described in claim 7, characterized in that, The switching component includes a relay or a MOSFET; When the switching component includes a relay, the control input terminal of the relay is the third terminal of the switching component; When the switching component includes a MOS transistor, the gate of the MOS transistor is the third terminal of the switching component.

9. The electric two-wheeled vehicle as described in claim 1, characterized in that, The power supply control module also includes a current detection circuit; When the charging and discharging circuit is turned on, the power battery, the charging and discharging circuit, and the electrical load form a battery discharge circuit. The current detection circuit is connected in series in the battery discharge circuit; the current detection circuit is electrically connected to the control circuit; the current detection circuit is used to detect the current in the battery discharge circuit. The control circuit is used to control the charging and discharging circuit to disconnect when the current in the battery discharge circuit is greater than a preset current.

10. The electric two-wheeled vehicle as described in claim 9, characterized in that, The power supply control module also includes a fuse; The fuse is connected in series in the battery discharge circuit; the fuse disconnects when the current in the battery discharge circuit exceeds a preset current.

Images