Control system for prolonging endurance and electric vehicle

Abstract

The utility model provides a control system and an electric vehicle capable of prolonging endurance, the control system comprises an integrated instrument, a controller, a battery and a motor, the battery is respectively connected with the integrated instrument and the controller, and the motor is connected with the controller; the integrated instrument is used for receiving control instruction information sent by the user terminal when the controller of the whole vehicle is in an undervoltage and non-riding state, and sending the control instruction information to the controller through an integrated services digital network protocol; the controller is used for adjusting the first under-voltage value into a second under-voltage value according to the control instruction information, so that the battery is deeply discharged; when the battery voltage is greater than the second under-voltage value, the motor is continuously driven to operate; when the battery voltage is reduced to a second under-voltage value, stopping driving the motor; wherein the second undervoltage value is smaller than the first undervoltage value; according to the embodiment of the invention, when the controller is under-voltage and cannot be ridden, riding can be continued for a certain mileage, so that the purpose of prolonging the endurance by a certain period is achieved, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle control technology, and in particular to a control system and electric vehicle for extending driving range. Background Technology

[0002] Currently, most two-wheeled / three-wheeled electric vehicles on the market are equipped with 48V, 60V, or 72V batteries, and the matching controllers have undervoltage protection. When the battery discharges to the undervoltage point, the controller will stop driving the motor.

[0003] When the above situation occurs, if the user has an urgent matter and needs to ride a certain distance, they will be unable to ride, resulting in a poor user experience. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a control system and electric vehicle for extending the range, which can continue to ride for a distance even when the controller is undervoltage and cannot be ridden, so as to achieve the purpose of extending the range and improving the user experience.

[0005] In a first aspect, this utility model provides a control system for extending battery life, the system comprising: an integrated instrument, a controller, a battery, and a motor, wherein the battery is connected to the integrated instrument and the controller respectively, and the motor is connected to the controller;

[0006] The integrated instrument is used to receive control command information sent by the user terminal when the controller of the vehicle is in a state of undervoltage and cannot be ridden, and to send the control command information to the controller through the One-Line Communication Protocol.

[0007] The controller is configured to adjust the first undervoltage value to a second undervoltage value according to the control instruction information, so as to deeply discharge the battery; when the voltage of the battery is greater than the second undervoltage value, the controller continues to drive the motor; when the voltage of the battery drops to the second undervoltage value, the controller stops driving the motor.

[0008] Wherein, the second undervoltage value is less than the first undervoltage value.

[0009] Furthermore, the integrated instrument integrates an instrument, an alarm module, a Bluetooth module, a speaker, multiple sensors, and a 485 central control module.

[0010] Furthermore, the motor is equipped with three Hall sensors;

[0011] The motor is used to identify rotation information and send the rotation information to the controller.

[0012] Furthermore, the controller is used to convert direct current into alternating current and drive the motor through the alternating current.

[0013] Furthermore, the integrated instrument is used to send the control command information to the controller via the motor lock signal line.

[0014] Furthermore, the controller is used to send a wheeling signal to the integrated instrument via a communication line.

[0015] Furthermore, the communication lines include 485A communication lines and 485B communication lines.

[0016] Furthermore, when the vehicle is powered on again, the controller returns to the first undervoltage value.

[0017] Furthermore, the controller is a three-phase inverter.

[0018] Secondly, embodiments of the present invention provide an electric vehicle, including the extended range control system described above.

[0019] This utility model embodiment provides a control system and electric vehicle for extending range, including: an integrated instrument, a controller, a battery, and a motor. The battery is connected to the integrated instrument and the controller, and the motor is connected to the controller. The integrated instrument is used to receive control command information sent by the user terminal when the vehicle's controller is in a state of undervoltage and cannot be ridden, and to send the control command information to the controller via a one-line communication protocol. The controller is used to adjust a first undervoltage value to a second undervoltage value according to the control command information, so as to deeply discharge the battery. When the battery voltage is greater than the second undervoltage value, the motor continues to run. When the battery voltage drops to the second undervoltage value, the motor stops running. The second undervoltage value is less than the first undervoltage value. It can continue to ride for a certain distance when the controller is in a state of undervoltage and cannot be ridden, so as to achieve the purpose of extending the range and improving the user experience.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the extended battery life control system provided in Embodiment 1 of this utility model;

[0024] Figure 2 This is a schematic diagram of another extended battery life control system provided in Embodiment 1 of this utility model.

[0025] icon:

[0026] 1-Integrated instrument; 2-Controller; 3-Battery; 4-Motor. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] To facilitate understanding of this embodiment, the following is a detailed description of the embodiment of this utility model.

[0029] Example 1:

[0030] Figure 1 A schematic diagram of the extended battery life control system provided in Embodiment 1 of this utility model.

[0031] Reference Figure 1 The system includes: an integrated instrument 1, a controller 2, a battery 3, and a motor 4. The battery 3 is connected to the integrated instrument 1 and the controller 2, and the motor 4 is connected to the controller 2.

[0032] Integrated instrument 1 is used to receive control command information sent by the user terminal when the vehicle controller 2 is in a state of undervoltage and cannot be ridden, and to send the control command information to the controller 2 through the One-Line Communication Protocol;

[0033] Controller 2 is used to adjust the first undervoltage value to the second undervoltage value according to the control command information, so as to deeply discharge the battery; when the voltage of battery 3 is greater than the second undervoltage value, the motor 4 continues to run; when the voltage of battery 3 drops to the second undervoltage value, the motor 4 stops running.

[0034] The second undervoltage value is less than the first undervoltage value.

[0035] In this embodiment, when the vehicle's controller is undervoltage and cannot be ridden, the user opens the APP on the user terminal. The interface displays a deep discharge to extend the range control. This control will display the estimated extended range, prompts indicating that the use is complete and the battery is fully charged, and the number of times it can be activated (each use will deduct one time). Since deep discharge will affect the battery's lifespan, this operation is set to activate a limited number of times throughout the electric vehicle's lifespan.

[0036] When the above functions are enabled, the APP on the user terminal transmits control command information to the integrated instrument via Bluetooth. The integrated instrument then sends the control command information to the controller via the One-Line Communication Protocol. Upon receiving the control command information, the controller adjusts the undervoltage value to reduce the battery's voltage, thus achieving a deeper discharge and extending the battery life. The first undervoltage value is 0.875 * rated voltage, and the second undervoltage value is 0.77 * rated voltage.

[0037] Specifically, refer to Figure 2 The battery's positive and negative terminals are connected to the controller and integrated instrumentation, providing them with DC power. The controller is connected to the motor to drive its rotation. Additionally, the system includes a throttle and a brake lever.

[0038] The controller transmits controller information (e.g., wheel movement signals) to the integrated instrument via a single line (communication line), using the Single One-Line Interchange (SIF) protocol. The integrated instrument transmits control commands to the controller via another line (motor lock signal line), also using the SIF protocol.

[0039] During RS485 communication, the integrated instrument acts as the master and the controller acts as the slave. The integrated instrument performs a polling of each node on the bus, and the controller responds after receiving a relevant query.

[0040] In traditional vehicles, these two wires function as follows: when the integrated instrument cluster is armed, detecting a wheel movement signal will energize the rear lock wire, thereby activating the controller. Simultaneously, the integrated instrument cluster pulls down the lock motor signal wire, and the controller, recognizing this signal, locks the motor. This application uses the lock motor signal wire as a control wire in a one-wire communication system.

[0041] The integrated instrument and controller are connected via communication lines. In the single-line communication mode, the controller sends information unidirectionally to the integrated instrument via the communication line, and the integrated instrument sends information unidirectionally to the controller via the motor lock signal line. In the 485 communication mode, there are two communication lines, 485A and 485B. The integrated instrument acts as the host and performs polling, while the controller responds with query commands.

[0042] Furthermore, the integrated instrument integrates an instrument, alarm module, Bluetooth module, horn, multiple sensors, and 485 central control module.

[0043] Furthermore, three Hall sensors are installed inside the motor;

[0044] The motor is used to identify rotation information and send the rotation information to the controller.

[0045] Furthermore, a controller is used to convert direct current to alternating current and drive the motor using the alternating current.

[0046] Furthermore, integrated instruments are used to send control command information to the controller via the motor lock signal line.

[0047] Furthermore, the controller is used to send wheel movement signals to the integrated instrument via a communication line.

[0048] Furthermore, the communication lines include 485A and 485B communication lines.

[0049] Furthermore, when the vehicle is powered on and restarted, the controller returns to the first undervoltage value.

[0050] Furthermore, the controller is a three-phase inverter. The wheel rotation signal is sent from the controller to the integrated instrument, while the motor locking signal is sent from the integrated instrument to the controller.

[0051] This utility model embodiment provides an electric vehicle, including the extended range control system described above.

[0052] The function of the controller's undervoltage protection: Traditional controllers, as three-phase inverters, inherently possess overvoltage and undervoltage protection functions. If the supply voltage exceeds the overvoltage value or falls below the undervoltage value, the controller automatically stops operating. The undervoltage value of traditional controllers primarily considers the battery's output characteristics. An excessively low undervoltage value, coupled with prolonged use, can lead to over-discharge and damage to the battery. Therefore, the industry standard typically defines the controller's undervoltage value as 0.875 * rated voltage, based on the characteristics of lead-acid batteries. For example, the undervoltage value for a 48V controller is 42V, and for a 60V controller, it is 52.5V.

[0053] The controller in this application has two built-in undervoltage values. Under normal use, it operates according to the traditional undervoltage value of 0.875 * rated voltage. When the user is riding the electric vehicle normally, the battery voltage decreases as the charge level drops. When the voltage drops to the controller's undervoltage point, the instrument displays an undervoltage indicator and the controller stops driving the motor.

[0054] Users can operate the system via the user terminal APP. Using the "long-lasting battery life mode", the mobile phone sends control command information to the Bluetooth module of the integrated instrument. After processing the data, the integrated instrument sends the secondary undervoltage command to the controller via the protocol (through the motor lock signal in one-line communication mode, and through the 485 bus in 485 communication). After the controller recognizes the undervoltage command, it adjusts the undervoltage value to 0.77*rated voltage. At this time, since the battery voltage is higher than the undervoltage value, the controller continues to drive the motor. When the battery voltage continues to drop to the undervoltage value, the vehicle controller stops driving the motor.

[0055] After the vehicle is powered on and restarted, this mode is turned off, and the controller reverts to the traditional undervoltage value. This application primarily aims to achieve dual undervoltage functionality through an integrated instrument cluster controller.

[0056] This utility model embodiment provides a control system and electric vehicle for extending range, including: an integrated instrument, a controller, a battery, and a motor. The battery is connected to the integrated instrument and the controller, and the motor is connected to the controller. The integrated instrument is used to receive control command information sent by the user terminal when the vehicle's controller is in a state of undervoltage and cannot be ridden, and to send the control command information to the controller via a one-line communication protocol. The controller is used to adjust a first undervoltage value to a second undervoltage value according to the control command information, so as to deeply discharge the battery. When the battery voltage is greater than the second undervoltage value, the motor continues to run. When the battery voltage drops to the second undervoltage value, the motor stops running. The second undervoltage value is less than the first undervoltage value. It can continue to ride for a certain distance when the controller is in a state of undervoltage and cannot be ridden, so as to achieve the purpose of extending the range and improving the user experience.

[0057] The computer program product provided in this embodiment of the present invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods described in the preceding method embodiments. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0058] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0059] Furthermore, in the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0060] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this utility model, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this utility model. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0061] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A control system for extending battery life, characterized in that, The system includes: an integrated instrument, a controller, a battery, and a motor, wherein the battery is connected to the integrated instrument and the controller, and the motor is connected to the controller. The integrated instrument is used to receive control command information sent by the user terminal when the controller of the vehicle is in a state of undervoltage and cannot be ridden, and to send the control command information to the controller through the One-Line Communication Protocol. The controller is configured to adjust the first undervoltage value to a second undervoltage value according to the control instruction information, so as to deeply discharge the battery; when the voltage of the battery is greater than the second undervoltage value, the controller continues to drive the motor; when the voltage of the battery drops to the second undervoltage value, the controller stops driving the motor. Wherein, the second undervoltage value is less than the first undervoltage value.

2. The control system for extending battery life according to claim 1, characterized in that, The integrated instrument includes an instrument, an alarm module, a Bluetooth module, a speaker, multiple sensors, and a 485 central control module.

3. The control system for extending battery life according to claim 1, characterized in that, The motor is equipped with three Hall sensors; The motor is used to identify rotation information and send the rotation information to the controller.

4. The control system for extending battery life according to claim 1, characterized in that, The controller is used to convert direct current into alternating current and drive the motor with the alternating current.

5. The control system for extending battery life according to claim 1, characterized in that, The integrated instrument is used to send the control command information to the controller via the motor lock signal line.

6. The control system for extending battery life according to claim 5, characterized in that, The controller is used to send a wheeling signal to the integrated instrument via a communication line.

7. The control system for extending battery life according to claim 6, characterized in that, The communication lines include 485A and 485B communication lines.

8. The control system for extending battery life according to claim 1, characterized in that, When the vehicle is powered on and restarted, the controller returns to the first undervoltage value.

9. The control system for extending battery life according to claim 1, characterized in that, The controller is a three-phase inverter.

10. An electric vehicle, characterized in that, Includes the extended range control system as described in any one of claims 1 to 9.

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