CN219339240U

CN219339240U - Comprehensive controller for low-speed vehicle

Info

Publication number: CN219339240U
Application number: CN202221930653.6U
Authority: CN
Inventors: 胡明; 赵梓亨
Original assignee: Nanjing Shuaier Mingheng Electronic Technology Co ltd
Current assignee: Nanjing Shuaier Mingheng Electronic Technology Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-07-14
Anticipated expiration: 2032-07-22

Abstract

The utility model discloses a low-speed vehicle integrated controller which comprises a combined battery PACK, a battery charge-discharge MOS tube array, a motor, an MCU chip and a 4G communication module, wherein the combined battery PACK is connected with the motor through the battery charge-discharge MOS tube array, the combined battery PACK is also connected with the MCU chip through a battery management chip, the combined battery PACK is connected with the motor discharge MOS tube array, the motor discharge MOS tube array is connected with the motor through a three-phase line and receives a control instruction sent by a motor control chip, the motor control chip is in data communication with the MCU chip, and the 4G communication module is in data communication with the MCU chip. The STM32F103 is adopted for main control of the MCU, and battery acquisition and control are adopted. The ARM single-chip microcomputer is used for controlling various peripheral devices such as battery management, motor current PWM duty ratio and the like, uploading the peripheral devices to a background management system in real time, and providing data support for the optimization of the performance of the product in the future through real-time monitoring and subsequent data analysis.

Description

Comprehensive controller for low-speed vehicle

Technical Field

The utility model relates to a comprehensive controller, in particular to a comprehensive controller for a low-speed vehicle.

Background

At present, after the domestic two-wheeled electric bicycle and electric tricycle and low-speed four-wheeled vehicle execute new national standard requirements, the motor controller and the lithium battery are commonly adopted as power and control modes, the vehicle is driven and controlled by other auxiliary performance, the domestic large-scale manufacturer is relatively better in terms of matching the controller and the battery, the adaptability is reasonable, but the places where the cost and the functions are difficult to coordinate are also present, especially the performance matching between the lithium battery and the motor controller is caused, for example, after the single voltage of the lithium battery is too low (barrel principle), the power of other normal battery of the whole module cannot be released and filled, the state of high charging and low discharging occurs, but the motor controller only judges whether the total voltage of the battery is too low, and cannot be undervoltage, and cannot detect and dynamically protect the battery core.

Disclosure of Invention

The utility model aims to provide a comprehensive controller for a low-speed vehicle, which solves the problems that the cost and functions of the controller are difficult to coordinate and consistent, and the battery cells of a lithium battery have too low voltage, so that the other normal cells of the whole module cannot be discharged and filled.

The utility model is realized by the following technical scheme:

the utility model provides a low-speed vehicle integrated control ware, includes assembled battery PACK, battery charge-discharge MOS pipe array, motor, MCU chip and 4G communication module, assembled battery PACK is connected with the motor through battery charge-discharge MOS pipe array, and assembled battery PACK still is connected with the MCU chip through battery management chip, and assembled battery PACK is connected with motor discharge MOS pipe array, and motor discharge MOS pipe array is connected with the motor through the three-phase line, and receives the control command that motor control chip sent, motor control chip still carries out data communication with MCU chip each other, 4G communication module carries out data communication with MCU chip each other.

The STM32F103 main control MCU is adopted in the application document and is a management control chip for battery acquisition, control and motor control, and a self-developed control algorithm is adopted for real-time acquisition and control. The ARM single-chip microcomputer is used for managing and controlling various peripheral devices such as battery management, motor current PWM duty ratio, a lighting system, an accelerator pedal, a brake pedal, a windshield wiper and the like, uploading the peripheral devices to a background management system in real time, and providing data support for the optimization of the performance of the product in the future through real-time monitoring and subsequent data analysis. The battery management part is autonomously managed by the management chip, the MCU acquires working parameters in real time through II2c communication, sets control thresholds such as the highest single voltage, the lowest single voltage, the highest battery cell temperature and the like, automatically correlates and adjusts discharge current and SOC according to the single voltage and the temperature threshold, and simultaneously timely shuts off the abnormal working state of the battery cell. And safety accidents are avoided. And the cell equalization is actively carried out during the discharging period of the cell, and 4 paths of equalization are timely started after the high-level voltage difference of the cell voltage exceeds a threshold value during the charging period, so that the uniformity of the cell during the charging is ensured to be minimum.

Further, the motor control system comprises a BCU system, wherein the BCU system is connected with the motor control chip and is driven by a power supply through switching value signals and analog quantity input.

Further, the battery PACK is connected with the MCU chip through two battery management chips, and the battery management chips collect through single voltage.

Further, the motor control adopts a middle-glume SH32F205P/080PR motor control chip to collect the motor Hall phase, and the motor coil is driven to enable through phase inversion so as to realize the forward and reverse rotation of the motor. The motor control adopts a middle-glume SH32F205P/080PR motor control chip to collect the motor Hall phase, and the motor coil is driven to enable through phase inversion, so that the motor can rotate positively and negatively. And can timely recover the electric energy generated in the running process of the motor.

Further, the SH32F205P/080PR motor control chip collects 0-5V analog quantity signals, collects forward or reverse switching quantity signals, collects the phase angle of a Hall phase sensor, obtains motor state data from a main control MCU, and outputs PWM pulse duty ratio pulses through chip pins to realize output current adjustment and drive a motor to forward or reverse. And the on-board integrated 4G two-in-one positioning/communication module reports the working parameters of the motor and the battery to the background management system in real time in an internal bus mode. The management background can issue an upgrade instruction to the optimized new firmware package in an unscheduled mode through a 4G wireless communication mode, and the two-in-one low-speed two-wheel vehicle/three-wheel vehicle/four-wheel vehicle integrated controller automatically completes remote OTA upgrade after receiving the upgrade instruction.

The locking/unlocking function is a customized asset protection function provided by matching with the push-pull sales or lease operation, the background management system issues a locking instruction, and the two-in-one low-speed two-wheel vehicle/three-wheel vehicle/four-wheel vehicle integrated controller responds to the instruction to judge whether the vehicle is running or not, if the vehicle is not executed once in the running instruction, the standby state of the battery needs to be confirmed, no current input and output are needed, the motor does not generate electricity or consume electricity, the locking instruction is executed after no vehicle speed is needed, the battery charging and discharging MOS tube is closed, and the motor is closed for enabling. The unlock instruction is immediately executed without any judgment. When the main control MCU chip cannot collect the charge and discharge states, the peripheral module is actively closed, and the whole machine enters a low-power-consumption sleep mode.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. according to the comprehensive controller for the low-speed vehicle, the physical compatibility of host devices is optimally matched, the power supply is reasonable in design, optimization processing is carried out on the host devices in public and in exclusive, and the problem of interference between low-voltage signals is physically isolated;

2. the low-speed vehicle integrated controller provided by the utility model has the advantages that the high-frequency interference to a main board device during battery charging and discharging and motor power generation/discharging is avoided by the double-board design, and the heat generated by charging and discharging of a high-power MOS tube can be timely dissipated.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model. In the drawings:

FIG. 1 is a data block diagram of a controller according to the present utility model.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.

Examples

As shown in FIG. 1, the low-speed vehicle integrated controller comprises a combined battery PACK, a battery charge-discharge MOS tube array, a motor, an MCU chip and a 4G communication module, wherein the combined battery PACK is connected with the motor through the battery charge-discharge MOS tube array, the combined battery PACK is also connected with the MCU chip through a battery management chip, the combined battery PACK is connected with the motor discharge MOS tube array, the motor discharge MOS tube array is connected with the motor through a three-phase line and receives a control instruction sent by a motor control chip, the motor control chip and the MCU chip are in data communication, and the 4G communication module and the MCU chip are in data communication.

The workflow in this application is: after the host is electrified, the battery management chip firstly judges whether the battery state accords with the charge and discharge conditions, if so, the battery management chip outputs motor enabling, opens charge and discharge pins, starts the wireless 4G positioning module and the host is in a standby state; after the analog quantity signal of 0-5V acceleration is collected, judging whether the forward gear is a reverse gear or not, starting a Hall acquisition phase of a motor, and outputting current corresponding to 0-5V acceleration according to the acquisition phase to drive the motor to forward or reverse; collecting high-low level signals of the brake, triggering the motor to output cut-off current by the low level, and feeding back the current in a power generation state to the battery for charging; the battery management chip monitors the change of the voltage and the temperature of the single body in real time, and if abnormal conditions exist, the battery management chip carries out treatment according to a control logic plan; the battery data and the motor data are output to the instrument for data display in a wire communication mode (or other bus data transmission) mode; the output current state of the motor is monitored in real time, if the motor is blocked, the short-circuit current exceeds a threshold value, the discharge is immediately stopped, and a discharge resistor is started to release electric energy, so that a motor coil is protected; the battery acquisition chip acquires no charge and discharge, and the host is in a standby state, if the standby state exceeds the longest standby threshold, the host enters a dormant state; the voltage or the temperature of the single body exceeds the lowest threshold value, the single body enters dormancy, the single body must be reset and awakened by a key, the battery is disconnected and discharged during dormancy, and the single body is allowed to be charged within the temperature threshold value; and the temperature of the battery core is lower than the lowest threshold value, a battery heating logic is started, the temperature is more than or equal to 15 degrees, and charging is allowed.

The motor control system is characterized by further comprising a BCU system, wherein the BCU system is connected with the motor control chip and is driven by a power supply through switching value signals and analog quantity input. The battery PACK is connected with the MCU chip through two battery management chips, and the battery management chips collect through single voltage. The motor control adopts a middle-glume SH32F205P/080PR motor control chip to collect the motor Hall phase, and the motor coil is driven to enable through phase inversion so as to realize the forward and reverse rotation of the motor. The SH32F205P/080PR motor control chip collects 0-5V analog quantity signals, collects forward or reverse switching quantity signals, collects the phase angle of a Hall phase sensor, obtains motor state data from a main control MCU, and outputs PWM pulse duty ratio pulses through chip pins to realize output current adjustment and drive a motor to forward or reverse.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a low-speed vehicle integrated control ware, its characterized in that includes assembled battery PACK, battery charge-discharge MOS pipe array, motor, MCU chip and 4G communication module, assembled battery PACK passes through battery charge-discharge MOS pipe array and is connected with the motor, and assembled battery PACK still is connected with the MCU chip through battery management chip, and assembled battery PACK and motor discharge MOS pipe array are connected, and motor discharge MOS pipe array passes through the three-phase line and is connected with the motor, and receives the control command that motor control chip sent, motor control chip still carries out data communication with MCU chip each other, 4G communication module carries out data communication with MCU chip each other.

2. The integrated controller of claim 1, further comprising a BCU system, wherein the BCU system is connected to the motor control chip, and is powered by a switching signal and an analog input.

3. The low-speed vehicle integrated-control unit according to claim 1, wherein the battery PACK is connected to the MCU chip through two battery management chips, and the battery management chips are collected through a single voltage.

4. The integrated controller for a low-speed vehicle according to claim 1, wherein the motor control uses a middle-glume SH32F205P/080PR motor control chip to collect the phase of a motor Hall, and the motor coil is driven to enable by phase inversion, so that the motor can rotate positively and negatively.

5. The integrated controller for a low-speed vehicle according to claim 4, wherein the SH32F205P/080PR motor control chip collects 0-5V analog signals, collects forward or reverse switching value signals, collects phase angles of hall phase sensors, obtains motor state data from the main control MCU, outputs PWM pulse duty cycle pulses through chip pins to achieve output current adjustment, and drives the motor to forward or reverse.