A V2L discharge control system for new energy vehicles and new energy vehicles

Abstract

This utility model discloses a V2L discharge control system for new energy vehicles and a new energy vehicle. The system includes a control unit, a bidirectional charger, an external discharge touch button, a voltage and current detection module, and a power detection module. The control unit is connected to the bidirectional charger. The external discharge touch button is connected to the control unit and is used to input command signals to the control unit to enable and disable the external discharge function. The voltage and current detection module is set on the discharge circuit of the bidirectional charger to collect voltage and current signals during external discharge, and its output terminal is connected to the control unit. The control unit controls the working state of the bidirectional charger based on the monitored voltage and current signals. The power detection module is connected to the control unit and is used to send the real-time SOC of the battery to the control unit. The control unit controls the discharge of the bidirectional charger to shut down based on the real-time SOC. This solution is applicable to external discharge in microcars.

Description

Technical Field

[0001] This utility model relates to the field of new energy discharge control, and in particular to a V2L discharge control system for new energy vehicles and a new energy vehicle. Background Technology

[0002] Existing electric vehicle (EV) external discharge technology is becoming increasingly sophisticated and is becoming a standard feature in vehicles. For example, patent application number 202311201483.7 describes an external discharge control system, method, and vehicle that can achieve external discharge while preventing unintended activation of the external discharge function. However, this external discharge function is generally only equipped on medium and large-sized vehicles and vehicles with large battery packs. For A0-class and even A00-class vehicles, their range is short and their battery pack capacity is small. Therefore, many A00-class new energy vehicles, and even A0 or A-class vehicles, do not have external discharge functionality. Although the starting point is the low battery capacity of the vehicle, users also have a need for external discharge for A0-class vehicles. Therefore, the introduction of external discharge functionality is also being considered for A00-class microcars.

[0003] However, increasing the discharge function will consume the range of microcars with limited battery capacity. Therefore, when the external discharge function is activated and monitored, the external discharge function of new energy vehicles with large batteries cannot be directly utilized. Existing technology does not have a control scheme for activating the external discharge function of microcars and vehicles with small batteries. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a V2L discharge control system for new energy vehicles and a new energy vehicle. It takes into account the discharge requirements of microcars and designs a discharge control system suitable for microcars, which can meet the discharge requirements while also providing power reminders and power control as much as possible.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A V2L discharge control system for a new energy vehicle includes a control unit and a bidirectional charger; the control unit is connected to the bidirectional charger and is used to control the bidirectional charger to discharge to the outside; the control system also includes an external discharge touch button, a voltage and current detection module, and a power detection module; The external discharge touch button is connected to the control unit and is used to input command signals to the control unit to turn the external discharge function on and off. The voltage and current detection module is set on the discharge circuit of the bidirectional charger to collect the voltage and current signals for external discharge, and its output terminal is connected to the control unit. The control unit controls the working status of the bidirectional charger based on the monitored voltage and current signals. The power detection module is connected to the control unit to send the real-time SOC of the battery to the control unit, which then controls the discharge of the bidirectional charger based on the real-time SOC.

[0006] The control unit is connected to the vehicle display screen and is used to display the remaining driving range, discharge current, and voltage information in real time through the vehicle display screen.

[0007] The control system further includes a power supply limit adjustment module, which is used to input the minimum allowable discharge level of the battery; the output of the power supply limit adjustment module is connected to the control unit, which receives the minimum allowable discharge level of the battery from the power supply limit adjustment module and controls the bidirectional charger to shut down after the battery level reaches the minimum allowable discharge level.

[0008] The control system also includes an authentication module, which is connected to the control unit and is used to verify the user's identity when the external discharge function is enabled.

[0009] The identity verification module includes a fingerprint recognition module, a face recognition module, or a voiceprint recognition module.

[0010] The power supply limit adjustment module includes a soft switch integrated into the vehicle touch screen.

[0011] A new energy vehicle, the new energy vehicle including the aforementioned V2L discharge control system.

[0012] The advantages of this utility model are: it designs a discharge control system suitable for microcars, taking into account the discharge requirements of microcars, so as to meet the discharge requirements while also providing power reminders and power control as much as possible. Attached Figure Description

[0013] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings: Figure 1 This is a schematic diagram of the control system structure of this utility model. Detailed Implementation

[0014] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0015] This embodiment provides a discharge control function suitable for microcars, focusing primarily on the control of discharge capacity and the verification of discharge. Because microcar battery packs are small and have low storage capacity, they cannot be discharged as freely as those in medium and large vehicles, otherwise it is very likely to cause range issues. Therefore, this solution mainly considers the control and verification of the external speaker function, as well as the monitoring and automatic termination of discharge after it is started. The specific solution is as follows: like Figure 1 As shown, a V2L discharge control system for a new energy vehicle includes a control unit and a bidirectional charger. The control unit is connected to the bidirectional charger and is used to control the bidirectional charger to discharge to the outside. The bidirectional charger can serve as an interface for external discharge. The control unit is implemented using the vehicle controller (VCU). When the VCU controls the bidirectional charger to be in the external discharge working mode, the battery DC power is converted by the bidirectional charger to supply power to the outside of the vehicle.

[0016] For microcars, this embodiment includes an external discharge touch button, a voltage and current detection module, and a power detection module; The external discharge touch button is used to input command signals to the control unit to turn the external discharge function on and off. The external discharge touch button is connected to the control unit and is integrated into the vehicle multimedia touch screen. It is used as a touch soft switch to turn on the external discharge function, which is convenient for users to manually turn on the external discharge function as needed.

[0017] A voltage and current detection module is installed on the discharge circuit of the bidirectional charger to collect the voltage and current signals during external discharge. Its output is connected to the control unit. The voltage and current detection module can use voltage and current sensors or resistor voltage dividers to acquire the signals. The control unit controls the working state of the bidirectional charger based on the monitored voltage and current signals. If an abnormal discharge voltage or current is detected, the bidirectional charger is shut down after a timer to avoid safety hazards caused by abnormal states such as overvoltage, overcurrent, and short circuits during discharge.

[0018] A power detection module is installed to send the battery's real-time State of Charge (SOC) to the control unit. This module is connected to the control unit, which controls the discharge of the bidirectional charger based on the real-time SOC. When the control unit (VCU) determines that a preset discharge threshold has been reached based on the detected SOC, it directly shuts down the bidirectional charger to protect the remaining battery power. For example, the default setting prohibits external discharge when the battery level reaches 20%. When the discharge level reaches 20%, the VCU sends a stop command to the bidirectional charger to stop external discharge.

[0019] In this embodiment, during the external discharge process, the discharge process data is displayed on the vehicle-mounted display screen. The control unit is connected to the vehicle-mounted display screen and is used to display the remaining driving range, discharge current, and voltage information in real time on the vehicle-mounted display screen, so that users can understand the discharge process data.

[0020] In this embodiment, the minimum discharge threshold of the battery is adjustable. A power supply limit adjustment module is provided, which is used to input the minimum allowable discharge level of the battery. The output of the power supply limit adjustment module is connected to the control unit. The control unit receives the minimum allowable discharge level of the battery from the power supply limit adjustment module and controls the bidirectional charger to shut down after the battery level reaches the minimum allowable discharge level. The minimum discharge level is set to 20% by default and can be adjusted by the user through the power supply limit adjustment module. The power supply limit adjustment module includes a soft switch integrated into the vehicle touch screen, which allows control of the minimum discharge level through the touch screen and the soft switch.

[0021] In this embodiment, user identity verification is required when activating the external discharge function and adjusting the minimum battery limit. This is due to the low battery capacity of the microcar, which prevents arbitrary external discharge; only users with verified identities can activate the external discharge function. The identity verification module, which can be a fingerprint, facial, or voiceprint recognition module, is integrated into the multimedia host or the vehicle's central control unit to identify the user. The identity verification module is connected to the control unit and is used to verify the user's identity when the external discharge function is activated.

[0022] This embodiment provides a new energy vehicle, which includes the V2L discharge control system described in the above embodiment.

[0023] This solution is applicable to external discharge for microcars. It adds an external discharge switch and discharge status (voltage, current, fault) indicators to the vehicle interior and optimizes the external discharge logic. It can verify the activation of the discharge function to prevent unauthorized activation, and monitors the discharge process, automatically disconnecting the external discharge in case of any issues. This fulfills the external discharge function requirements of microcars and improves the user experience.

[0024] Obviously, the specific implementation of this invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A V2L discharge control system for a new energy vehicle, comprising a control unit and a bidirectional charger; the control unit is connected to the bidirectional charger and is used to control the bidirectional charger to discharge externally; characterized in that: The control system also includes an external discharge touch button, a voltage and current detection module, and a power detection module; The external discharge touch button is connected to the control unit and is used to input command signals to the control unit to turn the external discharge function on and off. The voltage and current detection module is set on the discharge circuit of the bidirectional charger to collect the voltage and current signals for external discharge, and its output terminal is connected to the control unit. The control unit controls the working status of the bidirectional charger based on the monitored voltage and current signals. The power detection module is connected to the control unit to send the real-time SOC of the battery to the control unit, which then controls the discharge of the bidirectional charger based on the real-time SOC.

2. The V2L discharge control system for new energy vehicles as described in claim 1, characterized in that: The control unit is connected to the vehicle display screen and is used to display the remaining driving range, discharge current, and voltage information in real time through the vehicle display screen.

3. The V2L discharge control system for new energy vehicles as described in claim 1, characterized in that: The control system further includes a power supply limit adjustment module, which is used to input the minimum allowable discharge level of the battery; the output of the power supply limit adjustment module is connected to the control unit, which receives the minimum allowable discharge level of the battery from the power supply limit adjustment module and controls the bidirectional charger to shut down after the battery level reaches the minimum allowable discharge level.

4. A V2L discharge control system for new energy vehicles as described in any one of claims 1-3, characterized in that: The control system also includes an authentication module, which is connected to the control unit and is used to verify the user's identity when the external discharge function is enabled.

5. A V2L discharge control system for new energy vehicles as described in claim 4, characterized in that: The identity verification module includes a fingerprint recognition module, a face recognition module, or a voiceprint recognition module.

6. The V2L discharge control system for new energy vehicles as described in claim 3, characterized in that: The power supply limit adjustment module includes a soft switch integrated into the vehicle touch screen.

7. A new energy vehicle, characterized in that: The new energy vehicle includes the V2L discharge control system as described in any one of claims 1-6.

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