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Dual Battery Management System

A dual-battery, management system technology, applied in the direction of motor starting, engine components, and engine starting, etc., can solve the problems of large static current of the whole vehicle, mutual discharge, and inability of the vehicle to start, so as to reduce static current consumption and ensure The effect of starting performance and improving vehicle quality

Active Publication Date: 2016-03-02
FAW GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the automotive electronics industry, more and more electrical equipment are used in vehicles, especially high-end cars. This puts forward high requirements for the vehicle power supply system. The traditional single-battery power supply method can no longer meet the demand. For this reason, many vehicles currently use dual batteries in parallel for power supply, but there are the following problems in use: there is mutual discharge between the two batteries, and the battery is prone to loss of electricity during the parking process, causing the vehicle to fail to start; the static current of the whole vehicle Larger, when the vehicle is parked for a long time, the battery is easy to lose power, causing the vehicle to fail to start; during the process of starting the vehicle, audio and other entertainment equipment cannot work

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Intelligent connection / disconnection of two batteries

[0020] The dual-battery management unit collects the generator D+ signal. When the generator D+ signal is invalid, the two batteries are automatically disconnected after the vehicle is turned off; after the generator D+ signal is valid, that is, the vehicle is successfully started. The generator charges the two batteries.

[0021] In this way, mutual discharge between the two batteries is prevented. At the same time, the starting battery only bears the static current of the electric equipment related to starting. The static current is small, and the power consumption during the vehicle placement is low, thus ensuring the long-term maintenance of the vehicle. Parked and still able to start normally.

[0022] In addition, only the starting battery participates in the starting, and the non-starting battery is not affected, so that the electrical equipment that has nothing to do with starting (such as audio...

Embodiment 2

[0023] Example 2: Non-starting battery participates in starting

[0024] The dual-battery management unit monitors the voltage of the two batteries. When the voltage of the starting battery is too low and it is difficult to start, and the voltage of the non-starting battery is above 12V, the ON signal of the ignition switch is valid, and the two batteries are automatically connected to ensure the smooth start of the vehicle. The ON gear signal of the ignition switch is invalid, and the connection of the two batteries is automatically disconnected.

[0025] In this way, when the vehicle is placed for a long time, it can provide support for the starting of the vehicle, and at the same time effectively avoid the occurrence of mutual discharge of the batteries when the vehicle is placed.

Embodiment 3

[0026] Example 3: Manual connection / prohibition of connection in case of emergency

[0027] When there is a large demand for electricity, the two batteries can be forcibly connected through the forced connection switch on the dual-battery management unit; when a battery has a fault such as short circuit / leakage, to prevent damage to the other battery, it can be disabled The connection switch forcibly prohibits the connection of the two accumulators.

[0028] The dual-battery management system ensures the reasonable use of the two batteries in emergency situations, but treats this situation as a fault and is not suitable for long-term use.

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Abstract

The invention relates to a dual-battery management unit, which is characterized in that: the battery for starting is connected with electrical equipment related to power systems such as a starter, generator, ECU, and TCU; the battery for non-starting is connected with electrical equipment related to a comfort entertainment system; The starting battery and the non-starting battery are automatically connected and disconnected under the action of the dual battery management system, and can also be connected and disconnected manually in an emergency. The specific implementation methods are as follows: 1) Intelligent connection of two batteries 2) non-starting battery participates in starting; 3) mandatory connection / prohibited connection in emergency situations; 4) fault alarm for dual battery system. It eliminates the phenomenon of mutual discharge between the two batteries in the parking process of the vehicle powered by double battery parallel connection. At the same time, the non-starting battery is not affected by starting, and the audio and other entertainment equipment can still work normally during the engine starting process. Improved vehicle quality. The electrostatic current consumption of the starting battery is greatly reduced, and at the same time, the non-starting battery is not affected by starting.

Description

technical field [0001] The invention relates to a dual storage battery management system, which is used to realize the intelligent connection and disconnection of two storage batteries, and belongs to the technical field of vehicle power supply management. Background technique [0002] With the rapid development of the automotive electronics industry, more and more electrical equipment are used in vehicles, especially high-end cars. This puts forward high requirements for the vehicle power supply system. The traditional single-battery power supply method has been unable to meet the demand. For this reason, many vehicles currently use dual batteries in parallel for power supply, but there are the following problems in use: there is a mutual discharge phenomenon between the two batteries, and the battery is prone to loss of electricity during the parking process, causing the vehicle to fail to start; the static current of the whole vehicle Larger, when the vehicle is parked fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02N11/08
Inventor 孙连明高长胜苏朋军矫雪明王伟帆
Owner FAW GROUP
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