New energy automobile practical training box

Abstract

The utility model relates to a practical training box for a new energy automobile. The practical training box comprises a BMS main control board, a VCU controller, a motor module, a display module and a power supply module, the BMS main control board is respectively connected with the VCU controller, the display module and the power supply module, and the VCU controller is connected with the motor module. Therefore, the working principle, the working process and the control mode of new energy automobile BMS system control can be known through the new energy automobile practical training box, and the problems that in the prior art, the teaching efficiency is low, the teaching effect is not visual enough, the teaching cost is high, and potential teaching safety hazards exist are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of practical training box, especially to a new energy automobile practical training box. BACKGROUND

[0002] BMS system, namely Battery Management System, is the core component of pure electric vehicle power battery management, is equivalent to the "brain" of electric vehicle, is responsible for protecting and managing battery pack, ensures the safe, efficient operation of battery, and prolongs the service life of battery.

[0003] BMS battery management system is closely combined with the power battery of electric vehicle, carries out real-time detection to the voltage, current and temperature of battery through sensor, simultaneously still carries out leakage detection, heat management, battery equalization management, alarm reminding, calculates the residual capacity (SOC), discharge power, reports the battery deterioration degree (SOH) and residual capacity (SOC) state, still controls the maximum output power according to the voltage and current of battery and temperature with algorithm to obtain the maximum mileage, and controls the charging of charger with optimal current with algorithm, carries out real-time communication through CAN bus interface and vehicle-mounted general controller, motor controller, energy control system, vehicle-mounted display system etc.

[0004] Because using original vehicle power battery carries out BMS management demonstration and replaces battery operation cumbersome and there is a security risk, needs to be matched with vehicle control unit (VCU) and carries out discharge management, and the overall teaching cost is higher, and the replacement battery pack cost is higher, and the teaching effect is not enough intuitive, and the teaching efficiency is low, and there is certain teaching security risk. UTILITY MODEL CONTENT

[0005] Therefore, it is necessary to provide a new energy automobile practical training box to solve the problems of low teaching efficiency, not enough intuitive teaching effect, high teaching cost and teaching security risk in the prior art.

[0006] A new energy automobile practical training box, the new energy automobile practical training box includes BMS master control board, VCU controller, motor module, display module and power module;

[0007] The BMS master control board is connected with the VCU controller, the display module and the power module respectively, and the VCU controller is connected with the motor module.

[0008] Preferably, the power module includes a battery box and a battery protection plate, and the BMS master control board is connected with the battery box and the battery protection plate respectively.

[0009] Preferably, the battery box contains three 18650 model batteries.

[0010] Preferably, the BMS master control board comprises a collection control chip and a first processing chip, a MOS switch circuit, the collection control chip is in communication connection with the battery box and the battery protection board;

[0011] The collection control chip is connected with the first processing chip, and the collection control chip is connected with the MOS switch circuit;

[0012] The MOS switch circuit is connected with the battery protection board, and the MOS switch circuit is also connected with an external power input.

[0013] Preferably, the first processing chip is a chip of STM32F303K8T6 model, and the collection control chip is a chip of SH367303Q / 028QY model.

[0014] Preferably, the BMS master control board further comprises a first CAN chip, and the VCU controller comprises a second processing chip, a second CAN chip and a driving chip;

[0015] The first processing chip is connected with the first CAN chip, the first CAN chip is connected with the second CAN chip, and the second CAN chip is connected with the second processing chip;

[0016] The second processing chip is also connected with a driving chip, and the driving chip is connected with the motor module.

[0017] Preferably, the second CAN chip is a chip of TJA1050T / CM model, and the second processing chip is a chip of STM32F303RBT6 model;

[0018] The first CAN chip is a chip of TJA1051T11J model.

[0019] Preferably, the BMS master control board further comprises a master control board voltage conversion module, the master control board voltage conversion module comprises a chip of AMS1117-3.3 model and a chip of TPS5430DDAR model;

[0020] The chip of AMS1117-3.3 model is connected with the battery box, for accessing the output voltage of the battery box and converting the output voltage into 5V voltage;

[0021] The chip of TPS5430DDAR model is connected with the chip of AMS1117-3.3 model, for converting the 5V voltage output by the chip of AMS1117-3.3 model into 3V voltage;

[0022] The first processing chip is connected with the chip of the TPS5430DDAR model;

[0023] The first CAN chip is connected with the chip of the AMS1117-3.3 model.

[0024] Preferably, the display module comprises an OLED display screen, which is connected in communication with the first processing chip.

[0025] Preferably, the motor module comprises a direct-current driving coded motor.

[0026] The new energy automobile practical training box, comprising a BMS master control board, a VCU controller, a motor module, a display module and a power module, wherein the BMS master control board is connected with the VCU controller, the display module and the power module respectively, and the VCU controller is connected with the motor module. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a circuit principle block diagram of the new energy automobile practical training box in one embodiment of the present application;

[0028] Figure 2 It is a partial circuit diagram of the BMS master control board in one embodiment of the present application;

[0029] Figure 3 It is a schematic view of related terminals in the BMS master control board in one embodiment of the present application;

[0030] Figure 4 It is a partial circuit diagram of the VCU controller in one embodiment of the present application;

[0031] Figure 5 It is a schematic view of related terminals in the VCU controller in one embodiment of the present application;

[0032] Figure 6 It is a circuit diagram of the first CAN chip of the BMS master control board in one embodiment of the present application;

[0033] Figure 7 It is a power supply partial circuit diagram of the BMS master control board in one embodiment of the present application;

[0034] Figure 8 It is a structure schematic view of the new energy automobile practical training box in one embodiment of the present application;

[0035] Figure 9 A circuit principle block diagram of the new energy automobile practical training box in a specific example of the utility model. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model.

[0037] The utility model provides a new energy automobile practical training box. Figure 1 As shown in the figure, a new energy automobile practical training box comprises a BMS main control board 100, a VCU controller 200, a motor module 300, a display module 400 and a power module 500. Wherein, as shown in the figure, the BMS main control board 300 is connected with the VCU controller 200, the display module 400 and the power module 500 respectively, and the VCU controller 200 is connected with the motor module 300. Figure 1

[0038] In one example, the power module comprises a battery box and a battery protection board, and the BMS main control board is connected with the battery box and the battery protection board respectively. Wherein, the battery box contains three 18650 type batteries.

[0039] In one example, the BMS main control board comprises a collection control chip and a first processing chip, and a MOS switch circuit, the collection control chip is communicatively connected with the battery box and the battery protection board; the collection control chip is connected with the first processing chip, and the collection control chip is connected with the MOS switch circuit; the MOS switch circuit is connected with the battery protection board, and the MOS switch circuit is also connected with an external power input. Wherein, the first processing chip is an STM32F303K8T6 type chip, and the collection control chip is an SH367303Q / 028QY type chip.

[0040] Specifically, the BMS main control board collects and monitors the battery voltage, temperature and charge-discharge current in the battery box, carries out short-circuit protection, overcharge protection, over-discharge protection, over-current protection, over-temperature protection, passive balancing, display warning and estimates the remaining capacity (SOC) of the battery according to the obtained voltage, current and temperature data, so as to master the working principle of the new energy automobile BMS system control. As shown in the figure, the first processing chip is an STM32F303K8T6 type chip, and the collection control chip is an SH367303Q / 028QY type chip. In combination with Figure 2 Figure 3 ​​As shown, the battery box is connected to terminal J4 through a wire harness, and is connected to the BMS master control board. The battery protection board is connected to terminal J5 through a wire harness, and is connected to the BMS master control board. Thus, the battery box is connected to terminal J4 through a wire harness, and the battery protection board is connected to terminal J5 through a wire harness, and the circuit board internally connects the two lines. In addition, as shown Figure 3 As shown, the charging port POWER2 is an interface for external input of 12V, for charging the battery of the battery box. The charging switch POWER3 is used to control whether to charge. The battery voltage POWER4 is used to connect the voltage digital display meter to display the current total voltage.

[0041] In an example, the BMS master control board further comprises a first CAN chip, and the VCU controller comprises a second processing chip, a second CAN chip and a driving chip; the first processing chip is connected to the first CAN chip, the first CAN chip is connected to the second CAN chip, and the second CAN chip is connected to the second processing chip; the second processing chip is further connected to the driving chip, and the driving chip is connected to the motor module. The second CAN chip is a chip of TJA1050T / CM model, the second processing chip is a chip of STM32F303RBT6 model, and the first CAN chip is a chip of TJA1051T11J model.

[0042] Specifically, the circuit diagram of the VCU controller is as shown in Figure 4 The second processing chip is a chip of STM32F303RBT6 model, and the second CAN chip is a chip of TJA1050T / CM model. The second processing chip and the second CAN chip are connected through PB8 and PB9 of the chip of STM32F303RBT6 model. The driving chip is connected through terminal P7 and terminal P8 as shown in Figure 5

[0043] In addition, the first CAN chip of the BMS master control board is as shown in Figure 6 The TJA1051 chip is a CAN transceiver chip, which is used for external communication to send data such as battery temperature, voltage and current. CAN_TX and CAN_RX in the figure are connected to PB8 and PB9 of the STM32F303K8T6 chip.

[0044] ​Further, in an example, the BMS master control board further comprises a master control board voltage conversion module, the master control board voltage conversion module comprising a chip of model AMS1117-3.3 and a chip of model TPS5430DDAR; the chip of model AMS1117-3.3 is connected with the battery box, for accessing the output voltage of the battery box and converting the output voltage into 5V voltage; the chip of model TPS5430DDAR is connected with the chip of model AMS1117-3.3, for converting the 5V voltage output by the chip of model AMS1117-3.3 into 3V voltage; the first processing chip is connected with the chip of model TPS5430DDAR; the first CAN chip is connected with the chip of model AMS1117-3.3.

[0045] Specifically, Figure 7 As shown, the circuit of the chip of model TPS5430DDAR converts the total voltage output by the battery pack composed of batteries in the battery box into 5V voltage, for supplying power to the TJA1051 chip, the CH340X chip, the display screen and the like. The circuit of the chip of model TPS5430DDAR converts the 5V voltage into 3.3V voltage, for use of the first processing chip.

[0046] In an example, the display module comprises an OLED display screen, which is in communication connection with the first processing chip.

[0047] In an example, the motor module comprises a direct-current driving coded motor.

[0048] Specifically, the BMS master control board communicates with the VCU controller through CAN, so as to control the speed of the direct-current motor drive and in turn control the size of the discharge current; after using the experimental box, the overall teaching cost is lower, and the cost of replacing batteries is lower; the OLED screen can directly display the battery voltage, the charge and discharge current, the temperature data, the set protection threshold and the remaining capacity (SOC) of the battery, the teaching effect is intuitive, and the teaching efficiency is high; all the DC 12V electricity is used in the experimental box, so that the safety of electricity use is ensured.

[0049] For the above-mentioned new energy vehicle training box, the following provides a specific description:

[0050] As Figure 8As shown, a new energy vehicle practical training box includes a box body 1, a teaching practical training panel 2, and a box upper cover 3. The teaching practical training panel 2 is provided with a battery box 4, a battery protection plate 5, a BMS main control board 6, a display screen 7, a VCU controller 8, and a drive motor 9. Specifically, the teaching practical training panel 2 includes a new energy vehicle BMS acquisition current, voltage, temperature, and passive balancing principle diagram, a VCU controller control motor drive principle diagram, a display screen, a VCU controller, and a BMS main control board communication principle diagram; a charging port for demonstrating the charging principle; a battery protection plate for overcharge, overdischarge, short circuit, and overcurrent protection of the battery.

[0051] Specifically, a new energy vehicle practical training box includes a box body, an operation panel, and an upper cover. The operation panel includes a 18650 battery box for simulating a vehicle power battery; a battery protection plate for overcharge, overdischarge, overcurrent, and short circuit protection of the battery; a BMS main control board for acquiring and processing battery single voltage and total voltage, temperature, and charging and discharging current data, and controlling charging and discharging MOS tube switches, and according to the battery capacity, starting passive balancing during charging, and sending CAN message data to the VCU controller through a CAN transceiver chip and sending real-time voltage, current, temperature, and other data to the display screen through a serial port; the display screen receives real-time data from the BMS main control board and displays single battery voltage V1-3, average voltage, highest and lowest voltage, voltage difference, charging and discharging current, total capacity and remaining capacity, temperature 1-2, and parameter settings; the VCU controller has a built-in motor drive chip, receives CAN messages sent by the BMS main control board, analyzes the messages, and outputs high and low level signals to the direct current drive encoder motor according to the message content, simultaneously acquires the encoder pulse signal output by the direct current drive encoder motor, and calculates the rotating speed; the direct current drive encoder motor has a built-in encoder, receives high and low level signals sent by the VCU controller, controls the motor forward and reverse rotation and rotating speed, and simultaneously outputs the encoder pulse signal to the VCU controller; and the 12V charging input port inputs 12V voltage to the BMS control board.

[0052] In this example, as shown in Figure 9 A new energy vehicle practical training box includes an acquisition control chip 22, a processing chip 23, a processing chip 24, a drive chip 25, and a MOS switch circuit 26. The acquisition control chip 22 acquires current, voltage, and temperature data, and sends them to the processing chip 23. After data processing, the processing chip 23 sends MOS switch instructions to the acquisition control chip 22 according to the processing result. The acquisition control chip 22 drives the charging MOS tube switch to charge the battery in the battery box, and drives the discharging MOS tube switch to control the power supply of the VCU controller (containing the processing chip 24). The processing chip 24 receives the CAN message sent by the processing chip 23 through the CAN transceiver chip, analyzes and processes the message, and sends a PWM signal to the drive chip 25 to control the motor forward and reverse rotation and rotating speed.

[0053] Specifically, the following is described in relation to charging management, discharging management and communication management:

[0054] Charging management: access 3 18650 batteries, access 12V power to the charging port, turn on the charging switch, the BMS main control board collects single battery voltage, charging current and temperature, and turns on the charging MOS switch at the same time; when the collected charging current meets the set overcurrent protection threshold range, the collected single battery voltage does not exceed the set overcharge protection threshold range, and the collected temperature does not exceed the set high temperature protection threshold range, the BMS main control board charging MOS tube remains open state, and passive equalization is started according to the comparison of the voltages of the three batteries; otherwise, when the collected charging current does not meet the set overcurrent protection threshold range, the BMS main control board charging MOS tube is closed, and the battery cannot be charged; when the collected single battery voltage exceeds the set overcharge protection threshold range, the BMS main control board charging MOS tube is closed, and the battery cannot be charged; when the collected temperature exceeds the set high temperature protection threshold range, the BMS main control board charging MOS tube is closed, and the battery cannot be charged.

[0055] Discharge management: access 3 18650 batteries, the BMS main control board collects single battery voltage, discharge current and temperature, and turns on the discharge MOS switch at the same time; when the collected single battery meets the set single minimum voltage threshold, the collected discharge current meets the set overdischarge protection threshold range, and the collected temperature does not exceed the set high temperature protection threshold range, the BMS main control board discharge MOS tube remains open state, and the VCU controller is powered at the same time, the VCU controller works, and the motor works; otherwise, when the collected discharge current does not meet the set overdischarge protection threshold range, the BMS main control board discharge MOS tube is closed, and the VCU controller does not work; when the collected single battery voltage is lower than the set overdischarge protection threshold range, the BMS main control board discharge MOS tube is closed, and the VCU controller does not work; when the collected temperature exceeds the set high temperature protection threshold range, the BMS main control board discharge MOS tube is closed, and the VCU controller does not work.

[0056] Communication management: in the discharge management, when the VCU controller works normally, the BMS main control board sends the current maximum speed instruction of the motor to the VCU controller according to the calculation of the remaining capacity, the VCU controller drives the motor to work, and the maximum speed of the motor is controlled below the current maximum speed instruction of the motor.

[0057] In summary, the above-mentioned new energy vehicle training box solves the problems of high production process requirement, complex production mode, high hardware cost, and low teaching efficiency in the prior art.

[0058] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A new energy vehicle training kit, characterized in that, The new energy vehicle training box includes a BMS main control board, a VCU controller, a motor module, a display module, and a power supply module. The BMS main control board is connected to the VCU controller, the display module, and the power module, respectively, and the VCU controller is connected to the motor module.

2. The new energy vehicle training box according to claim 1, characterized in that, The power module includes a battery box and a battery protection board, and the BMS main control board is connected to the battery box and the battery protection board respectively.

3. The new energy vehicle training box according to claim 2, characterized in that, The battery box contains three 18650 batteries.

4. The new energy vehicle training box according to claim 2, characterized in that, The BMS main control board includes a data acquisition and control chip, a first processing chip, and a MOS switching circuit. The data acquisition and control chip is communicatively connected to the battery box and the battery protection board. The acquisition control chip is connected to the first processing chip, and the acquisition control chip is also connected to the MOS switching circuit. The MOS switch circuit is connected to the battery protection board and is also connected to an external power input.

5. The new energy vehicle training box according to claim 4, characterized in that, The first processing chip is an STM32F303K8T6 chip, and the acquisition and control chip is an SH367303Q / 028QY chip.

6. The new energy vehicle training box according to claim 4, characterized in that, The BMS main control board also includes a first CAN chip, and the VCU controller includes a second processing chip, a second CAN chip, and a driver chip. The first processing chip is connected to the first CAN chip, the first CAN chip is connected to the second CAN chip, and the second CAN chip is connected to the second processing chip; The second processing chip is also connected to the driver chip, which is connected to the motor module.

7. The new energy vehicle training box according to claim 6, characterized in that, The second CAN chip is a TJA1050T / CM model chip, and the second processing chip is an STM32F303RBT6 model chip; The first CAN chip is a TJA1051T11J model chip.

8. The new energy vehicle training box according to claim 6, characterized in that, The BMS main control board also includes a main control board voltage conversion module, which includes an AMS1117-3.3 chip and a TPS5430DDAR chip. The AMS1117-3.3 chip is connected to the battery box and is used to receive the output voltage of the battery box and convert the output voltage to 5V. The TPS5430DDAR chip is connected to the AMS1117-3.3 chip to convert the 5V voltage output by the AMS1117-3.3 chip to 3V voltage. The first processing chip is connected to the TPS5430DDAR model chip; The first CAN chip is connected to the AMS1117-3.3 chip.

9. The new energy vehicle training box according to claim 4, characterized in that, The display module includes an OLED display screen, which is communicatively connected to the first processing chip.

10. The new energy vehicle training box according to claim 1, characterized in that, The motor module includes a DC-driven encoder motor.

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