Charging prohibition riding control circuit for scooter

Abstract

A handlebar charging interface is provided with a positive electrode, a negative electrode and a second negative terminal pin, the positive terminal pin is electrically connected with the positive electrode of a rechargeable battery, the negative terminal pin is electrically connected with the negative electrode of the rechargeable battery, and the second negative electrode is electrically connected with the negative terminal pin while the second negative electrode is electrically connected with the negative terminal pin. A second negative terminal pin is electrically connected with a resistor series connection intermediate node of the divider resistors, the other end of a third resistor in the divider resistors is electrically connected with a PIN2 analog voltage detection pin of the single-chip microcomputer master control center, and the other end of a second resistor in the divider resistors is electrically connected with an intermediate adjusting contact of the first slide rheostat. The two ends of the first slide rheostat are electrically connected with a PIN1 high reference position pin and a PIN3 low reference position pin of the single-chip microcomputer master control center respectively. Control is simple and effective, the phenomenon that a scooter or an electric wheelchair is started for riding in the charging process can be effectively prohibited, and charging use is safe, reliable and effective.

Description

Technical Field

[0001] The utility model relates to a scooter or an electric wheelchair, in particular to a scooter charging and riding prohibition control circuit used on the scooter or the electric wheelchair. Background Art

[0002] A mobility scooter or electric wheelchair usually refers to a means of transportation or auxiliary tool for the purpose of walking. It is usually used as a small car, electric bicycle, electric mobility scooter, electric wheelchair, etc. to replace people's walking, so as to meet the needs of people with convenient mobility for longer distance travel, or meet the travel needs of people with inconvenience in mobility, so as to improve the efficiency of travel and other means of transportation or auxiliary tools. Existing representative vehicles or electric wheelchairs usually only have the function of charging batteries. After the battery is fully charged or charged to the point where the owner can use it for riding, the riding representative vehicle or electric wheelchair can be used again. However, existing mobility scooters or electric wheelchairs do not have the function of prohibiting charging, which makes it easier for some owners to start using the representative vehicle or electric wheelchair before the charging cable is unplugged, which can easily cause damage to the mobility scooter or electric wheelchair or the charging facilities, which poses a safety hazard; or it has this charging prohibition function but the control is complex and the wiring harness is complex, which is not conducive to improving the development needs of lightweight vehicles.

[0003] The authorized patent No. ZL 202122921625.X with the announcement date of June 21, 2022 discloses a charging port assembly and a scooter, including a mounting seat, a charging port piece, an elastic member and a charging cover, the charging port piece is arranged on the mounting seat, and the charging port piece is suitable for charging; the elastic member is arranged on the mounting seat, and the charging cover is rotatably connected to the mounting seat, and the charging cover has a first position and a second position. In the first position, the charging cover covers the charging port piece, and in the second position, the charging cover is opened to leak out the charging port piece. A positioning portion is provided on the charging cover, and the positioning portion has a first surface and a second surface. The first surface is suitable for abutting against the elastic member to keep the charging cover in the first position, and the second surface is suitable for abutting against the elastic member to keep the charging cover in the second position. The charging cover of the charging port assembly of the utility model can be positioned after opening, avoiding the situation where the charging cover automatically rebounds and interferes with the charging line, and improving the safety of the charging process. Similarly, this scheme has the problem that it does not have the function of realizing the charging prohibition function, which is easy to cause safety hazards in use. Utility Model Content

[0004] The utility model aims to solve the problem that the existing mobility scooters or electric wheelchairs do not have a charging prohibition function, which leads to some owners starting and using the mobility scooter or electric wheelchair before the charging cable is unplugged, which easily leads to damage to the mobility scooter or electric wheelchair or to the charging facilities, which poses a safety hazard; or the existing mobility scooters or electric wheelchairs have this charging prohibition function but the control is complex, the wiring harness is complex, and it is not conducive to improving the lightweight development demand of the whole vehicle. The utility model provides a simple and effective control method that can effectively prohibit the mobility scooter or electric wheelchair from being started and ridden during the charging process, and provides a mobility scooter charging prohibition riding control circuit that is safe, reliable and effective in charging and use.

[0005] The specific technical solution adopted by the utility model to solve the above technical problems is: a charging and riding prohibition control circuit of a scooter, comprising a single-chip microcomputer main control center, a representative vehicle rechargeable battery and a handlebar charging interface, characterized in that: the handlebar charging interface has a positive terminal pin, a negative terminal pin and a second negative terminal pin, the positive terminal pin is electrically connected to the positive pole of the rechargeable battery, the negative terminal pin is electrically connected to the negative pole of the rechargeable battery, the second negative terminal pin is electrically connected to the negative terminal pin, and the second negative terminal pin is electrically connected to the middle node of the resistor series connection of the voltage divider resistor, the other end of one of the third resistors of the voltage divider resistor is electrically connected to the PIN2 analog voltage detection pin of the single-chip microcomputer main control center, the other end of another second resistor of the voltage divider resistor is electrically connected to the middle adjustment contact of the first sliding rheostat, and the two ends of the first sliding rheostat are respectively electrically connected to the PIN1 high reference position pin and the PIN3 low reference position pin of the single-chip microcomputer main control center. When the main control center is turned on, PIN2 recognizes the GND signal and automatically reports a lever jumping fault. The scooter or electric wheelchair cannot be started and ridden, thus effectively prohibiting the scooter or electric wheelchair from being started and ridden during the charging process. By adding a second negative terminal to the newly added charging port and changing the resistance of the first sliding rheostat, different voltages are generated and given to the PIN2 pin to perform the function of manually controlling the speed of the entire vehicle. At the same time, the main control center will always monitor R1 open circuit, short circuit fault, high and low voltage will be judged as a fault state, and the manipulator circuit connection will realize the charging prohibition function. The control is simple and effective, which can effectively prohibit the scooter or electric wheelchair from being started and ridden during the charging process, providing safe, reliable and effective charging.

[0006] Preferably, a fifth resistor is connected in series on the PIN1 high reference pin in the single-chip main control center, and the fifth resistor is used as a pin short-circuit protection resistor inside the main control center, and the other end of the fifth resistor is electrically connected to a fixed end of the first sliding rheostat, thereby improving the effectiveness of the pin short-circuit protection inside the main control center.

[0007] Preferably, a sixth resistor is connected in series on the PIN2 low reference pin in the single-chip main control center, and the sixth resistor is used as a pin short-circuit protection resistor inside the main control center, and the other end of the sixth resistor is electrically connected to the other fixed end of the first sliding rheostat, thereby improving the effectiveness of the pin short-circuit protection inside the main control center.

[0008] Preferably, the voltage-dividing resistor is composed of a second resistor and a third resistor, the series node of the second resistor and the third resistor is electrically connected to the second negative terminal pin, the other end of the second resistor is electrically connected to the middle adjustment contact of the first sliding rheostat, and the other end of the third resistor is connected to the PIN2 analog voltage detection pin of the single-chip main control center. The voltage-dividing monitoring is simple, reliable and effective.

[0009] Preferably, the outer end of the PIN2 analog voltage detection pin of the single-chip main control center is electrically connected in series with a fourth speed limit potentiometer, and the other fixed end of the fourth speed limit potentiometer is connected in series with the resistor of the voltage divider resistor. This improves the simplicity and effectiveness of providing different voltages to the PIN2 pin to perform manual control of the vehicle speed.

[0010] Preferably, the other end of the third resistor is connected in series with the fixed end of the fourth speed limit potentiometer and then connected to the PIN2 analog voltage detection pin of the single-chip main control center, thereby improving the simplicity and effectiveness of providing different voltages to the PIN2 pin and executing the function of manually controlling the speed of the whole vehicle.

[0011] Preferably, the sliding resistance range of the first sliding rheostat is 0-5KΩ, which improves the simplicity and effectiveness of providing different voltages to the PIN2 pin to manually control the speed of the vehicle.

[0012] Preferably, the sliding resistance range of the fourth speed limit potentiometer is 0 to 25KΩ, which improves the simplicity and effectiveness of providing different voltages to the PIN2 pin to manually control the speed of the vehicle.

[0013] Preferably, the connection between the middle adjustment contact of the first sliding rheostat and the voltage-dividing resistor adopts the connection relationship between the handle throttle and the voltage-dividing resistor, thereby improving the simplicity and effectiveness of the function of manually controlling the speed of the whole vehicle.

[0014] The beneficial effect of the utility model is that when the main control center is turned on, the PIN2 pin recognizes the GND signal and automatically reports the lever jumping fault, so that the scooter or electric wheelchair cannot be started and ridden, thereby effectively prohibiting the scooter or electric wheelchair from being started and ridden during the charging process. By adding a second negative terminal to the newly added charging port, by changing the resistance change of the first sliding rheostat, different voltages are generated and given to the PIN2 pin, and the function of artificially controlling the speed of the whole vehicle is executed. At the same time, the main control center will always monitor R1 open circuit, short circuit fault, high and low voltage will be judged as a fault state, the manipulator circuit is connected to the actual charging prohibition function, the control is simple and effective, and the scooter or electric wheelchair can be effectively prohibited from being started and ridden during the charging process, providing safe, reliable and effective charging and riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 The utility model is a circuit structure diagram of a charging and riding prohibition control circuit of a scooter. DETAILED DESCRIPTION

[0017] Figure 1In the illustrated embodiment, a control circuit for prohibiting riding when charging a scooter comprises a single-chip microcomputer main control center 10, a representative vehicle rechargeable battery 20 and a handlebar charging interface 30, wherein the handlebar charging interface comprises a positive terminal pin 1, a negative terminal pin 2 and a second negative terminal pin 3, wherein the positive terminal pin 1 is electrically connected to the positive electrode P+ of the rechargeable battery, the negative terminal pin 2 is electrically connected to the negative electrode P- of the rechargeable battery, the second negative terminal pin 3 is electrically connected to the negative terminal pin 2, and the second negative terminal pin 3 is electrically connected to the middle node of the resistor series connection of the voltage divider resistor, the other end of one of the third resistors R3 of the voltage divider resistor is electrically connected to the PIN2 analog voltage detection pin of the single-chip microcomputer main control center 10, the other end of another second resistor R2 of the voltage divider resistor is electrically connected to the middle adjustment contact of the first sliding variable resistor R1, and the two ends of the first sliding variable resistor R1 are respectively electrically connected to the PIN1 high reference position pin and the PIN3 low reference position pin of the single-chip microcomputer main control center 10. A fifth resistor R5 is connected in series to the high reference pin of PIN1 in the single-chip main control center 10. The fifth resistor R5 is used as a short-circuit protection resistor for the pin inside the main control center. The other end of the fifth resistor is electrically connected to a fixed end of the first sliding rheostat. A sixth resistor R6 is connected in series to the low reference pin of PIN2 in the single-chip main control center 10. The sixth resistor R6 is used as a short-circuit protection resistor for the pin inside the main control center 10. The other end of the sixth resistor R6 is electrically connected to another fixed end of the first sliding rheostat R1. The above-mentioned PIN1, PIN2, and PIN3 are all connected to the I / O port of the single-chip microcomputer and are controlled by the single-chip microcomputer program. Among them, PIN1 is a high reference point of 4.5V, PIN2 is a voltage acquisition point, that is, the throttle input port, and PIN3 is a low reference point of 0.5V. The single-chip microcomputer control center 10 can adopt the single-chip microcomputer control center used in the representative vehicle or electric wheelchair in the prior art. The single-chip microcomputer used can adopt the model STM32F030R8T6_QFP-64, the voltage-dividing resistor is composed of the second resistor R2 and the third resistor R3, the series node of the second resistor R2 and the third resistor R3 is electrically connected to the second negative terminal pin 3, the other end of the second resistor R2 is electrically connected to the middle adjustment contact of the first sliding rheostat R1, and the other end of the third resistor R3 is connected to the PIN2 analog voltage detection pin of the single-chip microcomputer control center 10. The outer end of the PIN2 analog voltage detection pin of the single-chip microcomputer control center 10 is electrically connected in series with the fourth speed limit potentiometer R4, and the other fixed end of the fourth speed limit potentiometer R4 is connected in series with the resistor of the voltage-dividing resistor. The other end of the third resistor R3 is connected to the fixed end of the fourth speed limit potentiometer R4 in series and then connected to the PIN2 analog voltage detection pin of the single-chip microcomputer control center. The sliding resistance range of the first sliding rheostat R1 is 0 to 25KΩ. The sliding resistance range of the fourth speed limiting potentiometer R4 is 0 to 25KΩ. The middle adjustment contact of the first sliding rheostat R1 and the voltage dividing resistor adopt the connection relationship between the handle throttle and the voltage dividing resistor.Connection method of handlebar throttle: connect the handlebar lever of the handlebar throttle in the prior art with the sliding rod of the middle adjustment contact of the first sliding rheostat R1, and through the throttle shift, it is converted into the sliding rod adjusting the middle adjustment contact of the first sliding rheostat R1, thereby changing the resistance value of the sliding rheostat to achieve throttle linear detection; Function: the handlebar throttle can be used to control or adjust the riding speed of the whole vehicle.

[0018] When in use, the working principle is: the first sliding rheostat R1 is 0~5KΩ, the sliding rheostat of the fourth speed limit potentiometer is 0~25KΩ, the second resistor R2 and the third resistor R3 are both 5KΩ / 1% resistors, the fifth resistor R5 and the sixth resistor R6 are respectively the internal anti-pin short-circuit protection resistors of the single-chip main control center 10, among which PIN1 is the high reference position, PIN3 is the low reference position, and the PIN2 pin is the analog voltage detection pin. Different voltage values ​​correspond to different speeds. When the sliding resistor of the first sliding rheostat R1 is manually moved to each position, different voltages will be given to the PIN2 pin to execute the function of manually controlling the speed of the whole vehicle. At the same time, the main control center will always monitor the open circuit and short circuit faults of the first sliding rheostat R1. High and low voltages will be judged as fault states.

[0019] In the description of positional relationships in the present invention, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate orientation or positional relationships are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] The above content and structure describe the basic principle, main features and advantages of the utility model product, which should be understood by technicians in this industry. The above examples and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which are within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A charging prohibition control circuit for a scooter, comprising a single-chip main control center, a rechargeable battery for a representative vehicle and a handlebar charging interface, characterized in that: The handlebar charging interface has a positive terminal pin, a negative terminal pin and a second negative terminal pin. The positive terminal pin is electrically connected to the positive electrode of the rechargeable battery, the negative terminal pin is electrically connected to the negative electrode of the rechargeable battery, and the second negative terminal pin is electrically connected to the negative terminal pin. At the same time, the second negative terminal pin is electrically connected to the middle node of the resistor series of the voltage divider resistor, the other end of one of the third resistors of the voltage divider resistor is electrically connected to the PIN2 analog voltage detection pin of the single-chip main control center, the other end of the other second resistor of the voltage divider resistor is electrically connected to the middle adjustment contact of the first sliding rheostat, and the two ends of the first sliding rheostat are respectively electrically connected to the PIN1 high reference pin and the PIN3 low reference pin of the single-chip main control center.

2. The charging prohibition riding control circuit of the scooter according to claim 1, characterized in that: A fifth resistor is provided in series on the PIN1 high reference pin in the single-chip main control center. The fifth resistor is used as an internal pin short circuit protection resistor in the main control center. The other end of the fifth resistor is electrically connected to a fixed end of the first sliding rheostat.

3. The charging prohibition riding control circuit of the scooter according to claim 1, characterized in that: A sixth resistor is provided in series on the PIN2 low reference pin in the single-chip main control center. The sixth resistor is used as an internal pin short circuit protection resistor in the main control center. The other end of the sixth resistor is electrically connected to the other fixed end of the first sliding rheostat.

4. The charging prohibition riding control circuit of the scooter according to claim 1, characterized in that: The voltage dividing resistor is composed of a second resistor and a third resistor, the series node of the second resistor and the third resistor is electrically connected to the second negative terminal pin, the other end of the second resistor is electrically connected to the middle adjustment contact of the first sliding rheostat, and the other end of the third resistor is connected to the PIN2 analog voltage detection pin of the microcontroller main control center.

5. The charging prohibition riding control circuit of the scooter according to claim 1, characterized in that: The outer end of the PIN2 analog voltage detection pin of the single-chip main control center is electrically connected in series with a fourth speed limiting potentiometer, and the other fixed end of the fourth speed limiting potentiometer is connected in series with the resistor of the voltage dividing resistor.

6. The charging prohibition riding control circuit of the scooter according to claim 5, characterized in that: The other end of the third resistor is connected in series with the fixed end of the fourth speed limiting potentiometer and then connected to the PIN2 analog voltage detection pin of the single chip main control center.

7. The charging prohibition riding control circuit of the scooter according to claim 1, characterized in that: The sliding resistance range of the first sliding rheostat is 0 to 5KΩ.

8. The charging prohibition riding control circuit of the scooter according to claim 5 or 6, characterized in that: The sliding resistance range of the fourth speed limiting potentiometer is 0 to 25KΩ.

9. The charging prohibition riding control circuit of the scooter according to claim 1, characterized in that: The connection relationship between the middle adjustment contact of the first sliding rheostat and the voltage-dividing resistor adopts the connection relationship between the handle throttle and the voltage-dividing resistor.

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