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Method for reducing consumption of battery management system and low-consumption battery management system

A technology of battery management system and low power consumption, which is applied in the field of energy saving of vehicle battery management system, can solve problems such as energy waste, and achieve the effect of reducing power consumption

Inactive Publication Date: 2011-10-12
SUNWODA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Although this method reduces power consumption to a certain extent, there is still the problem of energy waste in the process of repeated wake-up and sleep

Method used

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  • Method for reducing consumption of battery management system and low-consumption battery management system

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Experimental program
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Embodiment 1

[0038] The invention discloses a method for reducing the power consumption of a battery management system, which uses a micro-control unit as a management platform of the battery management system and includes: setting a standard current value, which is greater than or equal to the system when the system is empty The total loop current is less than or equal to the current of the total loop when the system is no-load; the value of the total loop current of the system is collected from time to time to obtain a total loop current signal; the collected total loop current signal is compared with the set standard current value to obtain A system working state signal; the micro-control unit reads the system working state signal and instructs the battery management system to enter the sleep state or the working state according to the signal.

[0039] figure 1 It is a schematic flowchart of a method for reducing power consumption of a battery management system according to Embodiment 1 of ...

Embodiment 2

[0045] figure 2 This is a structural block diagram of a low-power battery management system provided in the second embodiment of the present invention.

[0046] Such as figure 2 As shown, a micro control unit 1 is included. The micro control unit 1 is connected to the battery unit 2 and the load unit 3, and the micro control unit 1 controls the actions of the battery unit 2 and the load unit 3.

[0047] Such as figure 2 As shown, the low-power battery management system further includes a current sampling unit 4 and a comparison unit 6. One end of the current sampling unit 4 is connected to the load unit 3, and the current sampling unit 4 is used to collect the value of the total loop current of the system from time to time. , Obtain a total loop current signal; the comparison unit 6 includes two input terminals and an output terminal, one of the input terminals of the comparison unit 6 is connected to a standard current setting unit 5, the standard current setting unit 5 is used ...

Embodiment 3

[0055] Figure 4 It is a schematic diagram of a specific circuit structure of Embodiment 3 of the present invention.

[0056] Such as Figure 4 As shown, the difference between this embodiment and the second embodiment is only that the comparator is integrated in the control unit.

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Abstract

The invention relates to the technical field of energy saving of vehicle battery management systems, in particular to a method for reducing consumption of a battery management system and a low-consumption battery management system. The method comprises the following steps of: obtaining a total loop circuit signal Ia by acquiring system total loop current in real time; comparing the total loop circuit signal with the standard value to obtain a total loop working state signal X; reading and identifying the signal by a micro-control unit; and instructing the battery management system to enter the dormant state or working condition according to the signal. In the invention, the system total loop current is taken as a triggering signal so that the battery management system automatically wakes up when the battery is required to work and is automatically dormant when the battery is unnecessary to work so as to greatly reduce the consumption of the battery management system.

Description

Technical field [0001] The invention relates to the technical field of energy saving of a vehicle battery management system, in particular to a method for reducing the power consumption of a battery management system and a low power consumption battery management system. Background technique [0002] As an important part of the research of electric vehicle technology, battery management system is also a key part. It plays an important role in the industrialization and marketization of electric vehicles. The battery management system with complete functions, accurate SOC estimation, and low cost can not only provide safe and good operation guarantee for the power battery pack of electric vehicles, but also reduce the cost of electric vehicles to popularize the popularization of electric vehicles. . Therefore, the automotive power battery intelligent management system can be divided into the following R&D modules: [0003] (1) Battery equalization technology; [0004] (2) Estimation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/44H02J7/00
CPCY02E60/10
Inventor 章春元
Owner SUNWODA ELECTRONICS