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Automobile starting system and method based on low-voltage storage battery intelligent management

A low-voltage battery and intelligent management technology, which is applied in the field of vehicle management, can solve the problems of battery performance attenuation and the inability to correct the battery's 12V start-up ability, and achieve the effects of reducing energy waste, saving overall fuel consumption, and avoiding safety risks

Active Publication Date: 2020-06-26
NINGBO GEELY AUTOMOBILE RES & DEV CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, aiming at the above problems, the present invention generally judges the 12V start-up capability of the battery based on the battery terminal voltage collected by the relevant controllers such as the engine control system and the vehicle controller in the existing market technical solutions. There is a large deviation in the dynamic change process of the load or when the performance of the battery is attenuated after long-term use, the charging voltage of the battery cannot be corrected in time according to the information and the 12V start-up ability cannot be accurately judged

Method used

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  • Automobile starting system and method based on low-voltage storage battery intelligent management
  • Automobile starting system and method based on low-voltage storage battery intelligent management
  • Automobile starting system and method based on low-voltage storage battery intelligent management

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Embodiment

[0040] Such as figure 1 As shown, the present invention provides a vehicle starting system based on low-voltage storage battery intelligent management, including a storage battery, a DC / DC converter, an IBS sensor, an engine control system, and a vehicle controller. The IBS sensor is arranged at the negative pole of the storage battery, The IBS sensor is connected to the engine control system, the engine control system is connected to the vehicle controller, the vehicle controller is connected to the DC / DC converter through CAN communication, and the DC / DC A converter is connected to the storage battery.

[0041] The IBS sensor is used for real-time monitoring of the battery state information of the storage battery and the voltage drop value information during the process of starting the engine by the 12V starter. Specifically, the IBS sensor is installed on the battery negative pole, and communicates with the engine control system through LIN. In the embodiment of the prese...

Embodiment 2

[0064] The present invention provides a method for starting an automobile based on the intelligent management of low-voltage storage batteries. The starting method is applied to the above-mentioned starting system, such as figure 2 shown, including the following steps:

[0065] S01, real-time monitoring of the battery state information of the storage battery and the voltage drop value information during the process of starting the engine by the 12V starter;

[0066] S03, sending the battery status information and the voltage drop value information to the vehicle controller;

[0067] S05, the vehicle controller adjusts the charging power / voltage of the battery by the DC / DC converter in real time according to the battery state information and the voltage drop value information, and controls the SOC of the battery to meet a preset SOC threshold.

[0068] Specifically, in the embodiment of the present invention, the vehicle controller dynamically adjusts the charging power / volt...

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Abstract

The invention discloses an automobile starting system and method based on low-voltage storage battery intelligent management. The system comprises a storage battery, an IBS sensor, an engine control system, a vehicle control unit and a DC / DC converter, and the IBS sensor is used for monitoring battery state information of the storage battery and voltage drop value information in the process of starting an engine by a 12V starter in real time; the engine control system is used for receiving the battery state information and the voltage drop value information and feeding back the battery state information and the voltage drop value information to the vehicle control unit; and the vehicle control unit is used for adjusting the charging power / voltage of the DC / DC converter to the storage battery in real time and controlling the SOC of the storage battery to meet a preset SOC threshold value. By the adoption of the method, the SOC of the storage battery and the starting capacity of a 12V starter for starting an engine are guaranteed as well after the load of the whole vehicle is dynamically changed and the long-term use performance of the storage battery is attenuated.

Description

technical field [0001] The invention relates to the technical field of vehicle management, in particular to a vehicle starting system and method based on intelligent management of low-voltage storage batteries. Background technique [0002] With the rapid development of new energy vehicles, people's demand for hybrid vehicles is also increasing. A hybrid vehicle has a pure electric driving mode, a hybrid driving mode and a pure generator driving mode, and the switching between each driving mode involves the start and stop of the engine. The mode of controlling the engine start of the hybrid electric vehicle can be further divided into the motor pull-up mode, the driving inertia pull-up mode and the starter start-up mode. When the high-voltage system failure occurs in the hybrid vehicle control engine vehicle, the hybrid vehicle will switch to the pure engine driving mode and use the starter start mode to start the engine. [0003] The starter can convert the electrical ene...

Claims

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Application Information

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IPC IPC(8): B60W30/18F02N11/08
CPCB60W30/18009F02N11/08F02N11/0862
Inventor 张剑锋万泽玲
Owner NINGBO GEELY AUTOMOBILE RES & DEV CO LTD
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