Power supply control method of range extending battery for two-wheeled vehicle

Abstract

The invention discloses a power supply control method of a range extending battery for a two-wheeled vehicle. The method comprises the following steps: (1) respectively connecting a main battery and a standby battery to a power supply system of the two-wheeled vehicle; (2) when the standby battery is started, the dual-power switching module detects the voltage of the standby battery, when it is detected that the interface voltage of the standby battery suddenly increases by delta V and lasts for t1 seconds, the dual-power switching module is triggered to start the switching action, and when the control voltage Vc output by the standby battery is larger than the action voltage of the relay, a relay coil is powered on, and the standby battery is started; a main contact in the power supply system is switched to a circuit loop of the standby battery, the standby battery and the controller are electrically connected with the two-wheeled vehicle load, and the standby battery supplies power to the two-wheeled vehicle load; and (3) when the standby battery runs out, the output of the standby battery circuit is cut off, and the dual-power switching module automatically switches back to the main battery for power supply. According to the invention, the problems of power supply interruption, low switching efficiency and battery loss during range-extended battery switching can be solved.

Description

TECHNICAL FIELD

[0001] The application relates to a power supply control method for a range-extended battery of a two-wheeled vehicle. BACKGROUND

[0002] In the application of electrically assisted two-wheeled vehicles, most existing electrically assisted vehicles are powered by a single battery, and the riding range is limited by the capacity of the main battery. The traditional range-extended scheme requires manual switching of the battery while the vehicle is parked, which is complicated and causes power supply interruption. Some dual-battery systems use parallel power supply mode, which easily leads to circulating loss between the batteries. If this cannot be effectively controlled, it may cause damage to the batteries and even trigger a battery safety accident. SUMMARY

[0003] The technical problem solved by the present application is to provide a power supply control method for a range-extended battery of a two-wheeled vehicle, which solves the problems of power supply interruption, low switching efficiency and battery loss during switching of the range-extended battery.

[0004] To solve the above technical problems, the technical solution adopted by the present application is to provide a power supply control method for a range-extended battery of a two-wheeled vehicle, which comprises the following steps:

[0005] (1) The main battery and the backup battery are connected to the power supply system of the two-wheeled vehicle respectively, the main battery and the backup battery are electrically connected to the dual-power switching module in the power supply system, the dual-power switching module is electrically connected to the relay and the controller in the power supply system, and the controller is electrically connected to the load of the two-wheeled vehicle;

[0006] (2) The backup battery interface remains in a standby detection state. When the backup battery is turned on, the backup battery discharges. The dual-power switching module detects the backup battery voltage. When a sudden increase of the backup battery interface voltage by AV and a duration of t1 seconds are detected, the dual-power switching module triggers the switching action. When the backup battery output control voltage Vc is greater than the relay action voltage, the relay coil is powered, the main contact in the power supply system is switched to the circuit loop of the backup battery, the backup battery and the controller are electrically connected to the load of the two-wheeled vehicle, and the backup battery supplies power to the load of the two-wheeled vehicle;

[0007] (3) When the backup battery is depleted, the backup battery circuit output is disconnected, and the dual-power switching module automatically switches back to the main battery power supply.

[0008] Preferably, the typical value of t1 is 0.5s.

[0009] Preferably, the main battery discharge loop switching time is less than or equal to 15ms.

[0010] The power supply control method for a range-extended battery of a two-wheeled vehicle of the present application can solve the problems of power supply interruption, low switching efficiency and battery loss during switching of the range-extended battery of an electrically assisted two-wheeled vehicle. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0012] Fig. 1 This is a flowchart of the power supply control method for the range extender battery for two-wheeled vehicles according to the present invention;

[0013] Fig. 2 This is a structural block diagram of the power supply system in the power supply control method for the range extender battery of the two-wheeled vehicle of the present invention. Detailed Implementation

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figs. 1-2 A power supply control method for a range extender battery for two-wheeled vehicles, comprising the following steps:

[0016] (1) Connect the main battery and the backup battery to the power supply system of the two-wheeled vehicle respectively. The main battery and the backup battery are electrically connected to the dual power switching module in the power supply system respectively. The dual power switching module is electrically connected to the relay and controller in the power supply system. The controller is electrically connected to the load of the two-wheeled vehicle. Under normal circumstances, the main battery, the dual power switching module, the controller and the load of the two-wheeled vehicle form a main battery discharge circuit.

[0017] (2) The interface of the backup battery remains in standby detection state. When the backup battery is turned on (backup battery switch is turned on or connector is connected), the backup battery discharges. The dual power supply switching module detects the backup battery voltage. When the backup battery interface voltage suddenly increases by ΔV and lasts for t1 seconds, the dual power supply switching module is triggered to start the switching action. When the backup battery output control voltage Vc is greater than the relay action voltage, the relay coil is energized, and the main contacts in the power supply system switch to the backup battery circuit. The backup battery and the controller are electrically connected to the two-wheeled vehicle load, and the backup battery supplies power to the two-wheeled vehicle load.

[0018] (3) When the backup battery is depleted, the backup battery circuit output is disconnected, and the dual power supply switching module automatically switches back to the main battery power supply.

[0019] Preferably, a typical value of t1 is 0.5s.

[0020] Preferably, the main battery discharge circuit switching time is less than or equal to 15ms, which can ensure uninterrupted power supply during switching. The main battery discharge circuit and the standby battery discharge circuit have short switching time and high switching efficiency, and can provide uninterrupted power supply for the two-wheeled vehicle load.

[0021] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the present application, is also included in the patent protection scope of the present application.

Claims

1. A power supply control method for a range extender battery for two-wheeled vehicles, characterized in that, Includes the following steps: (1) Connect the main battery and the backup battery to the power supply system of the two-wheeled vehicle respectively. The main battery and the backup battery are electrically connected to the dual power switching module in the power supply system respectively. The dual power switching module is electrically connected to the relay and the controller in the power supply system. The controller is electrically connected to the load of the two-wheeled vehicle. (2) The backup battery interface remains in standby detection state. When the backup battery is turned on, the backup battery discharges. The dual power switching module detects the backup battery voltage. When the backup battery interface voltage suddenly increases by ΔV and lasts for t1 seconds, the dual power switching module is triggered to start the switching action. When the backup battery output control voltage Vc is greater than the relay action voltage, the relay coil is energized, and the main contacts in the power supply system switch to the backup battery circuit. The backup battery and the controller are electrically connected to the two-wheeled vehicle load, and the backup battery supplies power to the two-wheeled vehicle load. (3) When the backup battery is depleted, the backup battery circuit output is disconnected, and the dual power supply switching module automatically switches back to the main battery power supply.

2. The power supply control method for a range-extending battery for two-wheeled vehicles according to claim 1, characterized in that, The typical value of t1 is 0.5s.

3. The power supply control method for a range-extending battery for two-wheeled vehicles according to claim 1 or 2, characterized in that, The main battery discharge circuit switching time is less than or equal to 15ms.

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