Integrated scooter controller and battery circuit
By integrating the scooter's battery management module and the control module on the same PCB board, the complex connection and high cost problems caused by the separation of the controller and the battery in traditional scooter design are solved, and a lighter and more power-saving scooter design is achieved.
Patent Information
- Application Number
- CN202421230992.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In traditional scooter design, the controller and battery are separated, resulting in complex connection lines, increasing the risk of failure, large weight and volume, poor range and driving efficiency, and high manufacturing and maintenance costs.
The integrated scooter controller and battery circuit are adopted. The battery management module and the scooter control module are integrated on the same PCB board. The controller of the battery management module is a microcontroller of the scooter control module, realizing the integration of battery management and control modules.
The number of PCB boards and wiring harnesses is reduced, the weight and volume of the scooter is reduced, the range is improved, the manufacturing and maintenance costs are reduced, and the safety and reliability of the system is improved.
Smart Images
Figure CN222742841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of scooter electric control, in particular to an integrated scooter controller and a battery circuit. Background Art
[0002] In traditional scooter designs, the controller and battery are usually separated. This design has some obvious disadvantages. First, the connection lines between the controller and the battery are complicated, which increases the risk of system failure. Second, the separate design increases the overall weight and volume of the scooter, which is not conducive to improving the scooter's range and driving efficiency. In addition, the separate controller and battery also increase the manufacturing and maintenance costs of the scooter. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide an integrated scooter controller and battery circuit, which has a long cruising range and low manufacturing and maintenance costs.
[0004] In order to solve the above problems, the following technical solutions are provided:
[0005] The integrated scooter controller and battery circuit of the utility model includes a battery management module and a scooter control module, and the characteristics are that the battery management module and the scooter control module are integrated on the same PCB board, and the controller of the battery management module is the single chip microcomputer of the scooter control module.
[0006] The battery management module includes an overvoltage protection chip U11 and a charge and discharge unit. The overvoltage protection chip U11 is adapted to be connected with the charge and discharge unit to control the charge and discharge unit to charge or discharge the battery. The overvoltage protection chip U11 is adapted to be connected with the battery to detect the battery voltage. In the charging mode, when the battery voltage is higher than the preset threshold of the overvoltage protection chip U11, the charge and discharge unit is controlled to stop charging to achieve overvoltage protection. The single-chip microcomputer is adapted to be connected with the overvoltage protection chip U11 to control the overvoltage protection chip U11.
[0007] The source of the power tube Q33 of the charging and discharging unit is used to be connected to an external power supply, the source of the power tube Q33 is connected to one end of the resistor R44, the other end of the resistor R44 is respectively connected to the gate of the power tube Q33 and one end of the resistor R148, one end of the resistor R148 is connected to the drain of the MOS tube Q28, the drain and source of the MOS tube Q28 are grounded, and the gate of the MOS tube Q28 receives the SECOND_PROTECT_OUT signal, which is generated by the secondary overvoltage protection unit. The secondary overvoltage protection unit is used to detect the battery voltage, and the preset threshold of the secondary overvoltage protection unit is greater than the preset threshold of the overvoltage protection chip U11. When the battery voltage is higher than the preset threshold of the secondary overvoltage protection unit, the secondary overvoltage protection unit sends a SECOND_PROTECT_OUT signal, the MOS tube Q28 is turned on, and the power tube Q33 is turned off to achieve overvoltage protection.
[0008] The secondary overvoltage protection unit contains a chip with model number SH367215S.
[0009] A diode ZD1 is connected in parallel between both ends of the resistor R44.
[0010] The gate of the MOS transistor Q28 is connected to one end of the resistor R159 and one end of the capacitor C97 respectively, and the other ends of the resistor R159 and the capacitor C97 are grounded.
[0011] The above solution has the following advantages:
[0012] Since the battery management module of the integrated scooter controller and battery circuit of the utility model is integrated on the same PCB board with the scooter control module, and the controller of the battery management module is the single-chip microcomputer of the scooter control module, the solution integrates the battery management module and the scooter control module on the same PCB board, reduces the number of PCB boards and wiring harnesses, reduces the weight and volume of the entire scooter, and improves the cruising range. At the same time, it is controlled by the same single-chip microcomputer, which greatly reduces the manufacturing cost and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural topological diagram of the integrated scooter controller and battery circuit of the utility model;
[0014] Figure 2 It is a single chip circuit diagram of the integrated scooter controller and battery circuit of the utility model;
[0015] Figure 3 It is a circuit diagram of the motor control module in the integrated scooter controller and battery circuit of the utility model;
[0016] Figure 4It is a connection diagram of the integrated scooter controller, the overvoltage protection chip U11 of the battery circuit and the charging and discharging unit circuit of the utility model;
[0017] Figure 5 A circuit connection diagram of the integrated scooter controller of the utility model and the secondary overvoltage protection unit of the battery circuit. DETAILED DESCRIPTION
[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0019] like Figure 1 As shown, the integrated scooter controller and battery circuit of the utility model includes a battery management module and a scooter control module. The battery management module and the scooter control module are integrated on the same PCB board 1, and the controller of the battery management module is the single chip microcomputer of the scooter control module.
[0020] The single-chip microcomputer model is MM32SPIN0280 chip U4, which is used to obtain the information of the scooter motor through the peripheral circuit and the motor control module. The motor control module inverts the DC power supply into a three-phase sine wave vector power supply to control the output of the motor, and transmits the motor information to the chip U4 for feedback. The specific circuit diagram is as follows Figure 2 and Figure 3 As shown, it belongs to the prior art and will not be described here in detail.
[0021] The battery management module contains an overvoltage protection chip U11 and a charge and discharge unit. The circuits and connections between the two are as follows: Figure 4 The model of the overvoltage protection chip U11 is SH367305, and its pin 2 is connected to the pin 36 of the chip U4, and the pin 3 of the overvoltage protection chip U11 is connected to the pin 35 of the chip U4. The overvoltage protection chip U11 is controlled by the chip U4 and the control signal of the B module.
[0022] The circuit and connection method of the overvoltage protection chip U11 and the charge and discharge unit are as follows Figure 4 As shown. The overvoltage protection chip U11 is used to control the charge and discharge unit to charge or discharge the battery. In this embodiment, the battery is composed of seven cells connected in series, and the positive electrode of each cell forms a VC1 port, a VC2 port, a VC3 port, a VC4 port, a VC5 port, a VC6 port and a VC7 port in sequence. The VC1 port, the VC2 port, the VC3 port, the VC4 port, the VC5 port, the VC6 port and the VC7 port are all connected to the overvoltage protection chip U11. The specific circuit structure is as shown in FIG. Figure 4 As shown, the overvoltage protection chip U11 detects the battery voltage. In the charging mode, when the battery voltage is higher than the preset threshold of the overvoltage protection chip U11, the charging and discharging unit is controlled to stop charging to achieve overvoltage protection.
[0023] like Figure 4 As shown, the source of the power tube Q33 of the charge and discharge unit is used to be connected to an external power supply, the source of the power tube Q33 is connected to one end of the resistor R44, the other end of the resistor R44 is respectively connected to the gate of the power tube Q33 and one end of the resistor R148, one end of the resistor R148 is connected to the drain of the MOS tube Q28, the drain and source of the MOS tube Q28 are grounded, and the gate of the MOS tube Q28 receives the SECOND_PROTECT_OUT signal, which is generated by the secondary overvoltage protection unit.
[0024] In this embodiment, the secondary overvoltage protection unit includes chips U5 and U7 of model SH367215S. The preset thresholds of chips U5 and U7 are greater than the preset thresholds of overvoltage protection chip U11. VC1 port, VC2 port, VC3 port, VC4 port, VC5 port, VC6 port and VC7 port are connected to the corresponding ports of chips U5 and U7, respectively. Figure 5 As shown. The OUT pin of chip U5 is connected to the CTL pin of chip U7 through resistor R121, and the OUT pin of chip U7 forms a SECOND_PROTECT_OUT signal through resistor R122. The secondary overvoltage protection unit sends a SECOND_PROTECT_OUT signal, MOS tube Q28 is turned on, and power tube Q33 is turned off to achieve overvoltage protection.
[0025] In this embodiment, a diode ZD1 is connected in parallel to both ends of the resistor R44. The gate of the MOS transistor Q28 is connected to one end of the resistor R159 and the capacitor C97 respectively, and the other ends of the resistor R159 and the capacitor C97 are grounded.
[0026] The utility model integrates the scooter controller and the battery control module into one, and uses the rich resource ports of the single-chip microcomputer to manage the battery pack while driving the motor. It controls the output capacity of the motor in real time according to the information collected by the battery pack, and reduces the system failure caused by the interference caused by the wiring harness connection; when the scooter is on standby and not started, the scooter can also enter the corresponding state according to the information of the scooter battery pack, reduce power consumption and enter a dormant state. When charging, the battery pack and the controller can be directly awakened, which greatly improves the safety and reliability of the system, reduces the failure rate, and reduces the manufacturing cost and management pressure of quality control.
Claims
1. An integrated scooter controller and battery circuit, including a battery management module and a scooter control module; characterized in that, The battery management module and the scooter control module are integrated on the same PCB board, and the controller of the battery management module is the single chip microcomputer of the scooter control module.
2. The integrated scooter controller and battery circuit as claimed in claim 1, characterized in that: The battery management module contains an overvoltage protection chip U11 and a charge and discharge unit. The overvoltage protection chip U11 is adaptably connected to the charge and discharge unit to control the charge and discharge unit to charge or discharge the battery. The overvoltage protection chip U11 is adaptably connected to the battery to detect the battery voltage. In the charging mode, when the battery voltage is higher than the preset threshold of the overvoltage protection chip U11, the charge and discharge unit is controlled to stop charging to achieve overvoltage protection; the single-chip microcomputer is adaptably connected to the overvoltage protection chip U11 to control the overvoltage protection chip U11.
3. The integrated scooter controller and battery circuit as claimed in claim 2, characterized in that: The source of the power tube Q33 of the charging and discharging unit is used to be connected to an external power supply, the source of the power tube Q33 is connected to one end of the resistor R44, the other end of the resistor R44 is respectively connected to the gate of the power tube Q33 and one end of the resistor R148, one end of the resistor R148 is connected to the drain of the MOS tube Q28, the drain and source of the MOS tube Q28 are grounded, the gate of the MOS tube Q28 receives a SECOND_PROTECT_OUT signal, and the SECOND_PROTECT_OUT signal is generated by the secondary overvoltage protection unit; the secondary overvoltage protection unit is used to detect the battery voltage, the preset threshold of the secondary overvoltage protection unit is greater than the preset threshold of the overvoltage protection chip U11, when the battery voltage is higher than the preset threshold of the secondary overvoltage protection unit, the secondary overvoltage protection unit sends a SECOND_PROTECT_OUT signal, the MOS tube Q28 is turned on, and the power tube Q33 is turned off to achieve overvoltage protection.
4. The integrated scooter controller and battery circuit as claimed in claim 3, characterized in that: The secondary overvoltage protection unit contains a chip with model number SH367215S.
5. The integrated scooter controller and battery circuit as claimed in claim 3, characterized in that: A diode ZD1 is connected in parallel between both ends of the resistor R44.
6. The integrated scooter controller and battery circuit as claimed in claim 3, characterized in that: The gate of the MOS transistor Q28 is connected to one end of the resistor R159 and one end of the capacitor C97 respectively, and the other ends of the resistor R159 and the capacitor C97 are grounded.