Low-voltage protection control system and method for 12V storage battery of new energy automobile

A new energy vehicle, low-voltage protection technology, applied in the direction of electric vehicles, collectors, vehicle components, etc., can solve the problems of 12V battery feed can not start the vehicle, can not use the vehicle, affect the user experience, etc., to achieve intelligent human-computer interaction experience, prevent power loss, and improve user experience

Pending Publication Date: 2021-07-06
CHERY COMML VEHICLE ANHUI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the new energy vehicles in the prior art only display the voltage value of the 12V battery on the instrument, and have not made some strategic improvements. When the vehicle is on for a long time and uses a 12V battery for power supply, it will cause the 12V battery to feed power due to long-term use. The situation that the vehicle cannot be started, this situation will cause inconvenience to the use of the vehicle, affect the user experience and cannot use the vehicle

Method used

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  • Low-voltage protection control system and method for 12V storage battery of new energy automobile

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Embodiment Construction

[0018] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0019] This application includes ICU (instrument), PEPS (keyless entry and start system), VCU (vehicle controller), RRM (large screen), and the functions of each module are as follows:

[0020] VCU vehicle controller:

[0021] 1. VCU sends 12V battery voltage signal VCU_BatteryVoltage to ICU

[0022] 2. VCU receives the 12V battery low-voltage protection start command RRM_12VBattProtSwitch:On sent by RRM

[0023] 3. VCU sends 12V battery low voltage protection switch display command VCU_12VBattProtSwitch:On to RRM

[0024] 4. When the VCU judges that the voltage of the 12V battery is <11V (TBD), and the power supply is in the ON gear, it will delay 10S to send the 12V battery low-voltage protection command VCU_12VBattProt:Active to PEPS

[0025] 5. Enter the power-off process after recei...

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Abstract

The invention discloses a low-voltage protection control system for a 12V storage battery of a new energy automobile. The low-voltage protection control system comprises a gear sensor, a vehicle control unit and a storage battery voltage detection sensor. The gear sensor is used for collecting the gear state of a vehicle, and the output end of the gear sensor is connected to the vehicle control unit. The storage battery voltage detection sensor is used for detecting the cut-off voltage of a vehicle-mounted 12V storage battery, and the output end of the storage battery voltage detection sensor is connected to the vehicle control unit; and the vehicle control unit controls the vehicle to enter a power-off process after the vehicle is in an ON gear and detects that the voltage of the 12V storage battery is lower than a set threshold value. The method has the advantages that the terminal voltage of the 12V storage battery working at the ON gear is monitored, and when the terminal voltage is lower than a set value, a corresponding strategy is adopted to power off and cut off the power supply of the storage battery, so that the occurrence of power shortage of the vehicle-mounted storage battery is prevented, and the defect that the vehicle cannot be started due to the power shortage is avoided.

Description

technical field [0001] The invention relates to the field of new energy vehicle battery safety, in particular to a low-voltage protection control system and method for a 12V storage battery of a new energy vehicle. Background technique [0002] At present, the new energy vehicles in the prior art only display the voltage value of the 12V battery on the instrument, and have not made some strategic improvements. When the vehicle is on for a long time and uses a 12V battery for power supply, it will cause the 12V battery to feed power due to long-term use. The situation that the vehicle cannot be started will cause inconvenience to the use of the vehicle, affecting the user experience and making it impossible to use the vehicle. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a new energy vehicle 12V battery low-voltage protection control system and method, which are used to avoid the defect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L3/12B60L1/00
CPCB60L3/0046B60L3/12B60L1/00
Inventor 胡超李涛刘昭才
Owner CHERY COMML VEHICLE ANHUI
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