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Low-electric-quantity charging control system and control method for low-voltage storage battery

A charging control method and low-voltage storage battery technology, applied in battery/fuel cell control devices, current collectors, electric vehicles, etc., can solve problems such as increased static power consumption, battery performance changes, false alarms, etc., to improve monitoring accuracy, The effect of reducing static energy consumption and reducing wake-up frequency

Pending Publication Date: 2021-06-18
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this solution, the vehicle controller frequently wakes up, which increases the static power consumption, and the battery performance changes with the change of the ambient temperature, which leads to the problem that the low battery alarm threshold cannot be adjusted intelligently, and false alarms may occur.
[0006] Third, the timing wake-up monitoring cannot detect the problem of battery power loss in time, and there is a risk of battery damage

Method used

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  • Low-electric-quantity charging control system and control method for low-voltage storage battery
  • Low-electric-quantity charging control system and control method for low-voltage storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 (Low-pressure battery low battery charging control system)

[0050] This embodiment provides a low-voltage battery low power charging control system that can bring more accurate battery power information to the user, and make the low-voltage battery more secure during remote charging.

[0051] Such as figure 1 As shown, the low-voltage battery low power charging control system of the present embodiment includes battery sensor 1 (electronic battery sensor, also known as EBS), body controller 2 (Body Control Module, also known as BCM), remote information processing terminal 3 (TELEMATICS BOX) Also known as the car T-Box), the vehicle controller 4 (VEHICLE CONTROLUNIT, also known as VCU), the power module 5 (also known as DC / DC), high voltage battery 6, low pressure battery 7, user terminal 8, etc.

[0052] Among them, the battery sensor 1 (Electronic Battery Sensor, also known as EBS) is used to continuously monitor the remaining electricity value of the low-volta...

Embodiment 2

[0060] Example 2 (Low-pressure battery low battery charging control system)

[0061] This embodiment provides a low-voltage battery low-power charging control system, in addition to the low-voltage battery, which can be monitored to the state of charge, thereby preventing excessive charging. The constituent member of the low pressure battery low power charging control system is in Example 1 in this example.

[0062] When the power module 5 causes the high voltage battery 6 to charge the low pressure battery 7, the battery sensor 1 continues to monitor the remaining electricity value of the low-voltage battery in the charging, and the determination module continues to determine whether the remaining electricity value is equal to the full power threshold. When the determination module determines that the remaining electric value is equal to the full power threshold, the full power signal is generated, and the full power signal is transmitted to the body controller 2 and the remote i...

Embodiment 3

[0067] Example 3 (Low-voltage battery low battery charging control method)

[0068] Such as figure 2 As shown, the embodiment provides a low-voltage battery low power charging control method, which enables automatic charging of the low pressure battery of the vehicle, including the following steps:

[0069] The first step, the battery sensor (Electronic Battery Sensor, also known as EBS) continuously monitors the remaining electricity value of the low pressure battery of the vehicle in a sleep state (State of Charge, also known as the SOC value).

[0070] In the second step, the determination module determines if the remaining power value is less than or equal to the low power threshold; when it is determined that the remaining electricity value is lower than or equal to the low power threshold, the wake-up signal is generated, and the wake-up signal is transmitted to the body controller through the LIN line. 2; When the determination module determines that the remaining electricity...

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PUM

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Abstract

The invention provides a low-electric-quantity charging control system and method for a low-voltage storage battery. The control system comprises a battery sensor used for monitoring the residual electric quantity value of the low-voltage storage battery, a judgment module at least used for judging the relation between the residual electric quantity value and a low electric quantity threshold value, a vehicle body controller and a whole vehicle controller used for controlling the power module to charge the low-voltage storage battery. According to the control method, the elements are used for controlling low-power charging of the low-voltage storage battery. According to the invention, the battery sensor is adopted to accurately monitor the residual electric quantity value, the battery precision, the charging current and other signals of the low-voltage storage battery, so that the electric quantity monitoring accuracy and the charging timeliness of the low-voltage storage battery under the conditions of battery aging, external environment change and the like are improved, meanwhile, the static energy consumption of vehicle components can be reduced, and the low-voltage storage battery is protected.

Description

Technical field [0001] The present invention belongs to the field of automotive battery power control, and is related to a low-voltage battery low power charging control system and a control method. Background technique [0002] In the context of new technologies such as intelligent network, new energy, automatic driving, the controller on the vehicle is also increasing. The problem that brings static power consumption in various components. In order to ensure that the vehicle is used, it can be initiated normally, and the charging should be performed in a loss in the battery loss. [0003] Two ways are mainly included in the current lifetime of charging technology: [0004] First, the high-voltage battery is initiated to charge the battery. However, the solution extends overcharge and triggered battery heating, not in time, dissatisfaction is dissatisfied, and the battery is damaged, and the user does not know the state of the vehicle. [0005] Second, use the vehicle controller...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L1/00B60L58/12
CPCB60L1/00B60L58/12Y02T10/70
Inventor 满超
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD