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OKAI ES400A Operator's Manual

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ES400A Operator
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Summary of Contents for OKAI ES400A

  • Page 1 ES400A Operator Guide...

  • Page 2: Table Of Contents

    Catalogue Modification record........................3 Introduction ..........................4 Cautions ........................4 Vehicle Security ......................4 Communication and Equipment Security ............4 Vehicle Introduction Diagram ..................5 Function Introduction ....................6 IoT ........................6 Electronic Control Unit（ECU） ..............10 Battery ......................13 Display ......................

  • Page 3: Modification Record

    Modification record Time Description Modified by 2020.8.1 Creation Xiandi Chen 2020.12.23 Amend the content of section 2.4.1.2 Xiandi Chen 2021.02.24 Amend the content of section 2.4.2.1.3 and 3.1.3 Yaoji Wang 2022.7.29 Update Xiandi Chen...

  • Page 4: Introduction

    Introduction Cautions All of the following functions are supported by OKAI scooters, but the client's server and APP support are required. Vehicle Security Communication and Equipment Security OKAI establishes a customer-specific encryption key for each customer, which is used in the encryption system of electronic components (IOT, ECU, BMS, battery lock, straight pole lock, meter, the same below).

  • Page 5: Vehicle Introduction Diagram

    Vehicle Introduction Diagram...

  • Page 6: Function Introduction

    Function Introduction OKAI's IOT is equivalent to the core brain of the vehicle, and it is used in conjunction with other hardware and equipment to realize functions such as controlling OKAI scooters, monitoring scooters data, and discovering current failures of the scooters. OKAI’s IOT plays an important role in the normal operation of the scooter.
  • Page 7 OTA operation, IOT will directly refuse to upgrade. During the OTA process, IOT will not be able to monitor the status of each electronic component. OKAI believes this is risky, so it refuses to upgrade during riding and charging. Speakers and audio frequency IOT speakers can play Lock, Unlock, Power On, Alarm, Locate, Mechanical Lock Locking, and Mechanical lock Unlocking seven-section audio.
  • Page 8 In general, the IOT of the sample scooter customer received defaults to test mode (red and white flashing alternately); The IOT mode of mass production in transit is inactive; After receiving the mass production and activating, the central control is in normal mode (white breathing light). The difference of a demo sample and mass production 1.
  • Page 9 OKAI attaches great importance to the function of helping customers search for vehicles when the vehicle loses connection. At present, all vehicles are equipped with LTE/GSM advanced bicycle trackers. The GPS receiver has superior sensitivity and fast positioning (FTFF), so it can quickly locate the vehicle.

  • Page 10: Electronic Control Unit（Ecu

    Car locating OKAI scooter is equipped with a car locating command. After the car locating command is issued through the server, the IOT speaker can play the car locating audio and flash the headlights for 10 seconds to help OKAI customers find the car.
  • Page 11 2.4.2.1.4. Electronic Brake Function In order to improve the stability and safety of the brakes, the ECU of the OKAI scooter has an electronic brake function, which can ensure that the scooter is braked in time when the mechanical brake is damaged. In addition, the electronic brake enhances the braking force, and in conjunction with the mechanical brake, the braking force can provide a timely braking force for the scooter.
  • Page 12 IOT ⚫ OKAI ECU will monitor the status of the scooter in real time when riding. When the motor is overheated and the MOS driven by the ECU is overheated, it will display the error code on the meter and report it to the server through IOT.

  • Page 13: Battery

    Battery Battery display and buttons There are LCD display and button on OKAI battery, by which users can view voltage, temperature, error code and other information. For the introduction of error codes, please refer to chapter 4.1 Functions of buttons: ⚫...
  • Page 14 Battery specification Es400a scooter battery is composed of Panasonic 18650-3200mah-3c cell, which has two different specifications: 13S3P(9.6Ah) and 13S5P(16Ah), The maximum discharge current is 20A, the maximum charging current is 5a, and the working temperature is - 20 ℃ - 60 ℃.

  • Page 15: Display

    Speed display OKAI's scooter meter can display two different speed units: km / h and mph. Customers can send commands to IOT through the server to adjust the two different speed units at any time.

  • Page 16: Mobile Phone Holder

    It can be very intuitive to observe that the car is in charging status and the current power. Mobile phone holder OKAI scooter has a mobile phone holder with fixtures at both ends. You can choose to add wireless charging function. If you chose it, wireless charging will be enabled only after unlocking the scooter.

  • Page 17: Stem Lock

    Stem lock There is a stem lock at the lower end of the front pipe, which is used to lock the scooter on the parking post. The IOT of the sample scooter is in the test mode. When you press and hold the button for more than 1 s to unlock the scooter, the stem lock will automatically unlocked.

  • Page 18: Battery Lock

    Battery Lock The battery lock of OKAI scooter can be directly controlled by the IOT. Through CAN bus, the IOT sends the unlocking command to the battery lock. When the battery lock is unlocked, the battery cover will pop up automatically. As long as you press down the battery cover, it will automatically lock.

  • Page 19: Front Headlight

    Tail light OKAI scooter is equipped with a tail light at the rear fender. The tail light will be turned on when the scooter is unlocked and turned off when it is locked. When the brake lever is pulled, the...

  • Page 20: User Instruction

    User instruction Operation after receive the scooter In general, before the mass production order is placed, client will purchase OKAI sample scooter for testing the functionalities and defectiveness. Since the IoT for sample is under test mode and for production is normal mode, thus the operation is going to be a bit different. We here will describe two cases separately.

  • Page 21: Mass Production

    ● Charge the scooter for more than an hour, at this time the meter display is under status of blank screen and will not shows anything ●OKAI will provide a list of matching ICCID and QR code list, please use the ICCID codes within this list to active the SIM card ●...

  • Page 22: Maintenance Instruction

    Maintenance Instruction Error code Error code instruction and solution Error Error name Error cause The solution code ⚫ Charge the battery, the error code will go away. The ECU detects that the battery voltage is under 43V. ⚫ Change the ECU. Battery under voltage The sampling circuit of the ECU is damaged.
  • Page 23 damaged or breakdown. During self-test when unlocking, the ECU detects the lower MOSFET is ⚫ ECU lower MOSFET damaged Change the ECU. damaged or breakdown. Motor hall wires are in poor contact. ⚫ Check if the connect between the motor line and Any one of motor hall wires A/B/C is disconnected.
  • Page 24 ⚫ Re-send the update command. Lost firmware of the ECU The ECU failed to update the program. ⚫ Change the ECU. During self-test when power on, the meter detects that the throttle isn't ⚫ Turn the throttle to original at the original position. position.

  • Page 25: Battery Error Code Declare And Solution

    ⚫ Check if the connection of the battery is loose. The BMS heartbeat fault The meter hasn't detect the BMS heartbeat for more than 5 minutes. ⚫ Change the battery. ⚫ Change the IoT. Illegal IoT or ECU Authentication match between the IoT and the ECU failed. ⚫...
  • Page 26 Sensor damaged or wires was dropped, both RCL1 & RCL2 ⚫ Cell temperature sensor damage Please scrap disposal. were damaged ⚫ △T(cell)>15℃(1s), don’t allow charging Do not connect to the power supply and let the load Large charging /discharging temperature difference stand for 1 hour.
  • Page 27 ⚫ Over current third layer protection Discharge current > 60A, lasting for 320 milliseconds. charge ⚫ Over current fourth layer protection Discharge current > 100A, lasting for 400 microseconds charge ⚫ Over legal charging temperature T(cell) > 55℃(5s) Recover if temperature lower than 50℃(5s) ⚫...

  • Page 28: Maintenance Tutorial

    Maintenance tutorial Vehicle maintenance Maintenance Manual ES-400/400A Vehicle Model Maintenance mileage 500km/15 regular Maintenance of days for regular regular maintenance for content first maintenance maintenance more than 1500 maintena for 1500 km for 1000 km km (every 15days) Check whether the vehicle anti-cursor is ●...
  • Page 29 Check whether the shock absorber spring is invalid. If the shock absorber ● ● ● spring is stuck, you need to apply oil or replace the front fork assembly Check whether the front steering is smooth and free of jams. If jams occur, ●...
  • Page 30 Check the braking system. The braking distance is on dry roads, the speed is 20km/h, and the load is 75kg. It is normal to use the single left brake and ● ● ● ● single right brake, and the braking distance is less than 5m.

  • Page 31: Storage And Transportation Methods

    In a ventilated environment (25℃, 65%RH), keep away from fire and high temperature. Battery storage solutions recommended by OKAI: Take out the battery every three months, charge the battery to 100%, discharge the battery to 0%, and finally charge the battery to 75% to continue storage.

  • Page 32: Vehicle And Battery Transportation

    Vehicle and battery transportation Short-distance vehicle transportation (within half a month) Charge the battery to 75%, switch the IOT to the inactive mode, make sure that the LED light of the IOT is off (enter the inactive mode), load the scooter for transportation, after arriving at the destination, press and hold the button on the IOT for more than 5 seconds to activate IOT.

  • Page 33: Appendix

    Appendix Appendix 1-Screw Torque of Important Parts Screw important parts Screw fixing position torque Hidden brake lever 9-12N.m Hidden brake lever （right） （central control 3-5N.m system 2）...
  • Page 34 pole clamp 22-28N.m Handlebar head and handlebar 4-9N.m tube Left right 2-5N.m protecting cover...
  • Page 35 rear cover 3-5N.m rear fender 9-12N.m Lock buckle 3-6N.m double support 22-28N.m...

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