Scooter control system and control method

Abstract

The present invention discloses a scooter control system and control method, including a battery management BMS module, a motor drive module and a weight sensor, wherein the weight sensor is connected to the BMS module circuit, and the weight sensor is connected to the motor drive module circuit; the BMS module is connected to the motor drive module in communication; the BMS module sets an overcurrent protection value according to the weight value detected by the weight sensor; and the motor drive module sets the maximum speed of the motor according to the weight value detected by the weight sensor. The weight of the child on the scooter is detected by the weight sensor, and the maximum speed of the motor in the motor drive module is set according to the weight of the child. The BMS module sets the discharge overcurrent protection value according to the weight of the child. The lighter the detected weight is, the smaller the maximum speed of the motor is, and the smaller the discharge overcurrent value of the BMS module is, and vice versa, the larger the discharge overcurrent value is, thereby improving the safety of the application.

Description

Technical Field

[0001] The present invention relates to the technical field of scooter control systems, and in particular to a scooter control system and a control method. Background Art

[0002] As scooters become more and more popular, electric scooters have emerged. Electric scooters are based on traditional human-powered scooters and are equipped with an electric power kit. Electric scooters are generally divided into two-wheel drive or single-wheel drive. The most common transmission methods are: hub motor (HUB) and belt drive. The main source of power is lithium battery pack.

[0003] Safety is the most important thing when using a scooter, especially for children. The current children's scooters cannot control the speed of the motor and implement over-current protection according to the weight of the child, which poses a safety hazard. Summary of the invention

[0004] In order to solve the above technical problems, the object of the present invention is to provide a scooter control system and control method to improve the safety of use.

[0005] To achieve this purpose, the present invention adopts the following technical solutions: a scooter control system, including a battery management BMS module, a motor drive module and a weight sensor, the weight sensor and the BMS module are circuit-connected, and the weight sensor and the motor drive module are circuit-connected; the BMS module and the motor drive module are communicatively connected; the BMS module is used to set an overcurrent protection value according to the weight value detected by the weight sensor; the motor drive module is used to set the maximum speed of the motor according to the weight value detected by the weight sensor.

[0006] Furthermore, the BMS module includes a discharge overcurrent adjustment circuit.

[0007] Furthermore, the discharge overcurrent adjustment circuit includes a battery pack, a current detection resistor, and a discharge MOS switch connected in series, and the two ends of the current detection resistor are connected to a first detection control circuit; the first detection control circuit is connected to the discharge MOS switch circuit, and the weight sensor is connected to the first detection control circuit circuit.

[0008] Furthermore, the first detection control circuit sets an overcurrent protection value according to the carrying weight of the scooter detected by the weight sensor. The first detection control circuit detects the voltage generated across the current detection resistor and determines the size of the discharge current according to the voltage. When the discharge current exceeds the set overcurrent protection value, the discharge MOS switch is disconnected.

[0009] Furthermore, the motor drive module includes an electrically connected motor and a motor speed adjustment circuit.

[0010] Furthermore, the motor speed adjustment circuit includes a second detection control circuit and a motor drive circuit; the second detection control circuit is connected to the motor drive circuit, and the motor drive circuit is connected to the motor circuit; the weight sensor is connected to the second detection control circuit.

[0011] Furthermore, the second detection control circuit sets the maximum speed of the motor according to the carrying weight of the scooter detected by the weight sensor, and the second detection control circuit controls the motor drive circuit to adjust the maximum speed of the motor.

[0012] On the other hand, a scooter control method is provided, using the scooter control system, comprising the following steps:

[0013] Get the carrying weight value of the scooter;

[0014] The BMS module sets an overcurrent protection value according to the load weight value;

[0015] The motor driving module sets the maximum speed of the motor according to the load weight value;

[0016] The BMS module detects the magnitude of the battery pack discharge current, and when the battery pack discharge current exceeds a set current protection value, turns off the discharge MOS switch;

[0017] The motor driving module automatically matches the motor speed according to the detected load weight value.

[0018] Furthermore, the relationship between the load weight value, the maximum speed of the motor, and the discharge overcurrent protection value of the BMS module is:

[0019] The smaller the detected load weight value is, the smaller the maximum speed of the motor is, and the smaller the discharge overcurrent value of the BMS module is, and vice versa.

[0020] Beneficial effects of the invention: The embodiment of the invention provides a scooter control system and control method, including a battery management BMS module, a motor drive module and a weight sensor, wherein the weight sensor is connected to the BMS module circuit, and the weight sensor is connected to the motor drive module circuit; the BMS module is connected to the motor drive module in communication; the BMS module sets an overcurrent protection value according to the weight value detected by the weight sensor; the motor drive module sets the maximum speed of the motor according to the weight value detected by the weight sensor. The weight of the child on the scooter is detected by the weight sensor, and the maximum speed of the motor in the motor drive module is set according to the weight of the child. The BMS module sets the discharge overcurrent protection value according to the weight of the child. The lighter the detected weight is, the smaller the maximum speed of the motor is, and the smaller the discharge overcurrent value of the BMS is, and vice versa, the larger the discharge overcurrent value is, thereby improving the safety of the application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A block diagram of a scooter control system provided by an embodiment of the present invention;

[0023] Figure 2 A block diagram of a discharge overcurrent adjustment circuit of a scooter control system provided by an embodiment of the present invention;

[0024] Figure 3 A block diagram of a motor speed adjustment circuit of a scooter control system provided by an embodiment of the present invention;

[0025] Figure 4 A flowchart of a scooter control method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The embodiments of the present invention provide a scooter control system and a control method to improve the safety of use.

[0027] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The technical solution of the present invention is further explained below with reference to the accompanying drawings and through specific implementation methods. Figure 1 , Figure 1 A block diagram of a scooter control system provided in an embodiment of the present invention.

[0029] Embodiment 1:

[0030] like Figure 1 As shown, a scooter control system includes a battery management BMS module, a motor drive module and a weight sensor, wherein the weight sensor is circuit-connected to the BMS module, and the weight sensor is circuit-connected to the motor drive module; the BMS module is communicatively connected to the motor drive module; the BMS module is used to set an overcurrent protection value according to a weight value detected by the weight sensor; the motor drive module is used to set a maximum speed of the motor according to the weight value detected by the weight sensor.

[0031] Specifically, the weight of the child on the scooter is detected by a weight sensor, the maximum speed of the motor in the motor drive module is set according to the weight of the child, and the BMS module sets the discharge overcurrent protection value according to the weight of the child. The lighter the detected weight, the smaller the maximum speed of the motor and the smaller the discharge overcurrent value of the BMS, and vice versa, thereby improving the safety of the application.

[0032] Further, such as Figure 2 As shown, the BMS module includes a discharge overcurrent adjustment circuit.

[0033] Specifically, the overcurrent protection function is achieved by providing a discharge overcurrent adjustment circuit in the BMS module.

[0034] Furthermore, the discharge overcurrent adjustment circuit includes a battery pack, a current detection resistor, and a discharge MOS switch connected in series, and the two ends of the current detection resistor are connected to a first detection control circuit; the first detection control circuit is connected to the discharge MOS switch circuit, and the weight sensor is connected to the first detection control circuit circuit.

[0035] Specifically, the discharge overcurrent adjustment circuit includes a battery pack, a current detection resistor, and a discharge MOS switch connected in series, and the two ends of the current detection resistor are connected to a first detection control circuit; the first detection control circuit is connected to the discharge MOS switch circuit, and the weight sensor is connected to the first detection control circuit circuit.

[0036] Furthermore, the detection control circuit sets an overcurrent protection value according to the carrying weight value of the scooter detected by the weight sensor. The first detection control circuit detects the voltage generated across the current detection resistor and determines the size of the discharge current according to the voltage. When the discharge current exceeds the set overcurrent protection value, the discharge MOS switch is disconnected.

[0037] Specifically, the discharge overcurrent adjustment circuit is as follows: Figure 2 As shown, the first detection control circuit detects the weight of the person on the scooter through the weight sensor and sets the overcurrent protection value according to the weight; the discharge current of the battery flows through the current detection resistor, and a voltage is generated at both ends of the detection resistor. The first detection control circuit detects the voltage signal at both ends of the circuit to determine the size of the discharge current. If the discharge current exceeds the set current protection value, the discharge MOS switch is turned off, the power supply to the children's scooter is disconnected, and the overcurrent protection function is realized.

[0038] Furthermore, the motor drive module includes an electrically connected motor and a motor speed adjustment circuit.

[0039] Specifically, the motor drive module includes an electrically connected motor and a motor speed adjustment circuit.

[0040] Furthermore, the motor speed adjustment circuit includes a second detection control circuit and a motor drive circuit; the second detection control circuit is connected to the motor drive circuit, and the motor drive circuit is connected to the motor circuit; the weight sensor is connected to the second detection control circuit.

[0041] Specifically, in this embodiment, Figure 3 As shown, the motor speed adjustment circuit includes a second detection control circuit. It should be noted that: the second detection control circuit in the embodiment is Figure 3 The detection and control circuit shown in;

[0042] The motor driving circuit; the second detection control circuit is connected to the motor driving circuit, and the motor driving circuit is connected to the motor circuit; the weight sensor is connected to the second detection control circuit.

[0043] Furthermore, the second detection control circuit sets the maximum speed of the motor according to the carrying weight of the scooter detected by the weight sensor, and the second detection control circuit controls the motor drive circuit to adjust the maximum speed of the motor.

[0044] Specifically, it should be noted that: the second detection control circuit in the embodiment is Figure 3The detection and control circuit shown in the figure; the motor speed adjustment circuit detects the weight of the person on the children's scooter according to the weight sensor, and transmits the weight data to the second detection control circuit. The second detection control circuit adjusts the motor speed through the motor drive circuit according to the weight, so as to set the motor speed according to the weight of the child, achieve automatic matching of the child's weight and the motor speed, effectively protect the child, and improve the safety of the application.

[0045] Embodiment 2:

[0046] A scooter control method, using the scooter control system, comprises the following steps:

[0047] Step 101: Obtain the carrying weight value of the scooter;

[0048] Specifically, the carrying weight value of the scooter is obtained through a weight sensor.

[0049] Step 102: The BMS module sets an overcurrent protection value according to the load weight value;

[0050] Specifically, the BMS module sets the overcurrent protection value according to the load weight value.

[0051] Step 103: The motor driving module sets the maximum speed of the motor according to the load weight value;

[0052] Specifically, the motor driving module sets the maximum rotation speed of the motor according to the load weight value.

[0053] Step 104: the BMS module detects the magnitude of the battery pack discharge current, and when the battery pack discharge current exceeds the set current protection value, turns off the discharge MOS switch;

[0054] Specifically, the BMS module detects the size of the battery pack discharge current. When the battery pack discharge current exceeds the set current protection value, the discharge MOS switch is turned off to implement overcurrent protection and improve safety.

[0055] Step 105: The motor driving module automatically matches the motor speed according to the detected load weight value.

[0056] Specifically, the motor drive module automatically matches the motor speed according to the detected load weight value to improve safety.

[0057] Furthermore, the relationship between the load weight value, the maximum speed of the motor, and the discharge overcurrent protection value of the BMS module is:

[0058] The smaller the detected load weight value is, the smaller the maximum speed of the motor is, and the smaller the discharge overcurrent value of the BMS module is, and vice versa. This effectively protects children and improves application safety.

[0059] In summary, the embodiment of the present invention provides a scooter control system and control method, including a battery management BMS module, a motor drive module and a weight sensor, wherein the weight sensor is connected to the BMS module circuit, and the weight sensor is connected to the motor drive module circuit; the BMS module is connected to the motor drive module in communication; the BMS module sets an overcurrent protection value according to the weight value detected by the weight sensor; the motor drive module sets the maximum speed of the motor according to the weight value detected by the weight sensor. The weight of the child on the scooter is detected by the weight sensor, and the maximum speed of the motor in the motor drive module is set according to the weight of the child. The BMS module sets the discharge overcurrent protection value according to the weight of the child. The lighter the detected weight is, the smaller the maximum speed of the motor is, and the smaller the discharge overcurrent value of the BMS is, and vice versa, the larger the discharge overcurrent value is, thereby improving the safety of the application.

[0060] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A scooter control system, characterized in that: It includes a battery management BMS module, a motor drive module and a weight sensor, wherein the weight sensor is connected to the BMS module circuit, and the weight sensor is connected to the motor drive module circuit; the BMS module is connected to the motor drive module in communication; The BMS module is used to set the overcurrent protection value according to the weight value detected by the weight sensor; the motor drive module is used to set the maximum speed of the motor according to the weight value detected by the weight sensor; The BMS module includes a discharge overcurrent adjustment circuit; The discharge overcurrent adjustment circuit comprises a battery pack, a current detection resistor, and a discharge MOS switch connected in series, wherein both ends of the current detection resistor are connected to a first detection control circuit; the first detection control circuit is connected to the discharge MOS switch circuit, and the weight sensor is connected to the first detection control circuit circuit; The first detection control circuit sets an overcurrent protection value according to the carrying weight value of the scooter detected by the weight sensor, detects the voltage generated at both ends of the current detection resistor, and determines the magnitude of the discharge current according to the voltage, and disconnects the discharge MOS switch when the discharge current exceeds the set overcurrent protection value; The motor drive module includes an electrically connected motor and a motor speed adjustment circuit; The motor speed adjustment circuit includes a second detection control circuit and a motor drive circuit; the second detection control circuit is connected to the motor drive circuit, and the motor drive circuit is connected to the motor circuit; the weight sensor is connected to the second detection control circuit; The second detection control circuit sets the maximum speed of the motor according to the carrying weight value of the scooter detected by the weight sensor, and the second detection control circuit controls the motor drive circuit to adjust the maximum speed of the motor.

2. A scooter control method, characterized in that: Using the scooter control system as claimed in claim 1, comprising the following steps: Get the carrying weight value of the scooter; The BMS module sets an overcurrent protection value according to the carrying weight value of the scooter; The motor driving module sets the maximum speed of the motor according to the load weight value; The BMS module detects the magnitude of the battery pack discharge current, and when the battery pack discharge current exceeds a set current protection value, turns off the discharge MOS switch; The motor driving module automatically matches the motor speed according to the detected load weight value.

3. The scooter control method according to claim 2, characterized in that: The relationship between the load weight value, the maximum speed of the motor, and the discharge overcurrent protection value of the BMS module is: The smaller the detected load weight value is, the smaller the maximum speed of the motor is, and the smaller the discharge overcurrent value of the BMS module is, and vice versa.

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