CN102214846A - Method for reducing consumption of battery management system and low-consumption battery management system - Google Patents

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

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Publication number
CN102214846A
CN102214846A CN2010101485410A CN201010148541A CN102214846A CN 102214846 A CN102214846 A CN 102214846A CN 2010101485410 A CN2010101485410 A CN 2010101485410A CN 201010148541 A CN201010148541 A CN 201010148541A CN 102214846 A CN102214846 A CN 102214846A
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China
Prior art keywords
unit
current
battery management
signal
total loop
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Pending
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CN2010101485410A
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Chinese (zh)
Inventor
章春元
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Sunwoda Electronic Co Ltd
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Sunwoda Electronic Co Ltd
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Priority to CN2010101485410A priority Critical patent/CN102214846A/en
Publication of CN102214846A publication Critical patent/CN102214846A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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

Reduce the method and the low-power consumption battery management system of battery management system power consumption
Technical field
The present invention relates to the field of energy-saving technology of Vehicular battery management system, be specifically related to a kind of method and low-power consumption battery management system that reduces the battery management system power consumption.
Background technology
Battery management system also is a key component as an important component part in the middle of the electric vehicle engineering research, plays important meaning in the industrialization of electric automobile, marketing development.Perfect in shape and function, state-of-charge (SOC) estimation battery management system accurate, with low cost not only can provide the good operation of safety to guarantee for the power battery pack of electric automobile, and the integral vehicle cost that can also reduce electric automobile is to popularize the popular requirement of electric automobile.So the automobile power cell intelligent management system can be divided into following research and development module:
(1), cell balancing;
(2), state-of-charge (SOC) estimation;
(3), the cell safety protection is perfect;
(4), battery management system low-power consumption solution;
(5), the low-cost solution of battery management system.
Reduce the battery management system power consumption, system must enter park mode under idle condition.All can enter park mode when the zero load in order to save the general battery management system of the energy, the various methods of waking battery management system up have just been arranged for this reason.It mainly contains following dual mode:
(1), communication awakening mode;
When needs electromagnetism management system works, wake battery management system up by communication host.
But when communication host lost efficacy, battery management system just can not in time be waken up, and therefore, there is certain potential safety hazard in this system.
(2), the house dog timing wakes up;
It is to wake up at set intervals once that the house dog timing wakes mode up, so, and when this system can be by waking up and dormancy repeatedly.
Though this kind mode has reduced power consumption to a certain extent,, wake up repeatedly and the process of dormancy in also still have the problem of energy dissipation.
Summary of the invention
First purpose of the present invention is to provide a kind of method that reduces the battery management system power consumption.
To achieve these goals, the technical solution used in the present invention is:
A kind of method that reduces the battery management system power consumption, it is to be the management platform of battery management system with the micro-control unit, comprise: set a standard current value, described standard current value more than or equal to system system's total loop electric current when unloaded, smaller or equal to system the electric current of total loop when unloaded; Acquisition system total loop size of current numerical value obtains a total loop current signal constantly; The total loop current signal that collects and the standard current value of setting are compared, obtain a working state of system signal; Micro-control unit reads described working state of system signal, and enters resting state or operating state according to this signal instruction battery management system.
Second purpose of the present invention is to provide a kind of low-power consumption battery management system, and in order to realize aforementioned purpose, the technical solution used in the present invention is:
A kind of low-power consumption battery management system comprises a micro-control unit, and described micro-control unit is in order to control battery unit and load unit action, and this low-power consumption battery management system also comprises a current sampling unit and a comparing unit; Described current sampling unit one end is connected with load unit, and described current sampling unit is used for constantly acquisition system total loop size of current numerical value, obtains a total loop current signal; Described comparing unit comprises two inputs and an output; One of them input of described comparing unit is provided with the unit with a normalized current and is connected, described normalized current is provided with the unit and is used to be provided with a standard current value, described standard current value more than or equal to system system's total loop electric current when unloaded, smaller or equal to system the electric current of total loop when unloaded; Another input of described comparing unit is connected with current sampling unit, and described comparing unit compares the total loop current signal of input and the standard current value of setting, obtains a working state of system signal; The output of described comparing unit is connected with micro-control unit, described micro-control unit reading system working state signal, and enter resting state or operating state according to this signal instruction battery management system.
Described low-power consumption battery management system, described current sampling unit is made of a sampling resistor and an amplifier unit; Described current sampling unit one end is connected with load unit, and specifically: an end of sampling resistor is connected with load unit, the other end ground connection of described sampling resistor; Another input of described comparing unit is connected with current sampling unit, and specifically: another input of comparing unit is connected with the output of amplifier unit, and the input of described amplifier unit and sampling resistor are electrically connected with the node of load unit.
Described low-power consumption battery management system, described normalized current are provided with the unit and are made of two divider resistances that are cascaded, and an end of this series circuit is connected with power end, and the other end of this series circuit is connected with ground; One of them input of described comparing unit is provided with the unit with a normalized current and is connected, and specifically: one of them input of comparing unit is electrically connected with the node of two divider resistances.
Described low-power consumption battery management system, described comparing unit is integrated in the micro-control unit.
Described low-power consumption battery management system, described comparing unit is made of a comparator.
Pass through acquisition system total loop size of current numerical value constantly among the present invention, promptly can read and embody reading system operating state all the time, because: once working state of system changes, its total loop electric current changes at once thereupon.By system's total loop electric current and the standard current value that sets in advance are compared, obtain the working state of system signal among the present invention, this signal can and then interrupt the state that micro-control unit changes battery management system.
As from the foregoing, the present invention is exactly by being triggering signal with system's total loop electric current, battery management system is waken up when needs are battery operated automatically and do not needing sleep mode automatically when battery operated, thereby greatly reduce the power consumption of battery management system.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute to improper qualification of the present invention, in the accompanying drawings:
A kind of schematic flow sheet that reduces the method for battery management system power consumption that Fig. 1 provides for the embodiment of the invention one;
A kind of low-power consumption battery management system structured flowchart that Fig. 2 provides for the embodiment of the invention two;
Fig. 3 is a kind of particular circuit configurations schematic diagram of the embodiment of the invention two;
Fig. 4 is a kind of particular circuit configurations schematic diagram of the embodiment of the invention three.
Number in the figure:
1, micro-control unit 2, battery unit
3, load unit 4, current sampling unit
41, amplifier unit 5, normalized current are provided with the unit
6, comparing unit
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
Embodiment one:
The invention discloses a kind of method that reduces the battery management system power consumption, it is to be the management platform of battery management system with the micro-control unit, comprise: set a standard current value, described standard current value more than or equal to system system's total loop electric current when unloaded, smaller or equal to system the electric current of total loop when unloaded; Acquisition system total loop size of current numerical value obtains a total loop current signal constantly; The total loop current signal that collects and the standard current value of setting are compared, obtain a working state of system signal; Micro-control unit reads described working state of system signal, and enters resting state or operating state according to this signal instruction battery management system.
A kind of schematic flow sheet that reduces the method for battery management system power consumption that Fig. 1 provides for the embodiment of the invention one; As shown in Figure 1, comprising:
Step S101: acquisition system total loop size of current numerical value constantly, obtain a total loop current signal Ia;
Step S102: total loop current signal Ia and standard value current value are compared, obtain a working state of system signal X; If Ia is smaller or equal to normalized current, working state of system signal X is low level, i.e. X=0; If Ia overgauge normalized current, working state of system signal X is high level, i.e. X=1;
Step S103: micro-control unit reading system working state signal X and judgement system operating state; Represent that as working state of system signal X=0 system is in Light Condition, then assign dormancy and instruct to battery management system; Represent that as working state of system signal X=1 system is in band and carries state, then assign and wake instruction up to battery management system.
As from the foregoing, what total loop current signal Ia carried in fact is system health information, this method is handled by the identification to Ia, and then influence the management platform-micro-control unit of battery management system, wake up or the dormancy battery management system by the micro-control unit instruction, and then battery management system is waken up automatically and do not needing sleep mode automatically when battery operated, thereby greatly reduce the power consumption of battery management system when needs are battery operated.
Embodiment two:
A kind of low-power consumption battery management system structured flowchart that Fig. 2 provides for the embodiment of the invention two.
As shown in Figure 2, comprise a micro-control unit 1, this micro-control unit 1 is connected with load unit 3 with battery unit 2, micro-control unit 1 control battery unit 2 and load unit 3 actions.
As shown in Figure 2, this low-power consumption battery management system also comprises current sampling unit 4 and comparing unit 6, described current sampling unit 4 one ends are connected with load unit 3, and described current sampling unit 4 is used for constantly acquisition system total loop size of current numerical value, obtains a total loop current signal; Described comparing unit 6 comprises two inputs and an output, one of them input of described comparing unit 6 is provided with unit 5 with a normalized current and is connected, described normalized current is provided with unit 5 and is used to be provided with a standard current value, described standard current value more than or equal to system system's total loop electric current when unloaded, smaller or equal to system the electric current of total loop when unloaded; Another input of described comparing unit 6 is connected with current sampling unit 4, and described comparing unit 6 compares the total loop current signal of input and the standard current value of setting, obtains a working state of system signal; The output of described comparing unit 6 is connected with micro-control unit 1, described micro-control unit 1 reading system working state signal, and enter resting state or operating state according to this signal instruction battery management system.
Fig. 3 is a kind of particular circuit configurations schematic diagram of the embodiment of the invention two;
As shown in Figure 3, current sampling unit 4 is made of a sampling resistor R1 and an amplifier unit 41, and described amplifier unit 41 is by amplifier U1, resistance: R2, R3, R4, R5, R6, and capacitor C 1 constitutes typical amplifying circuit jointly; The end of sampling resistor R1 is connected with load unit 3, the other end ground connection of described sampling resistor R1.This electric current adopts the sampling resistor R1 of unit 4 directly to be connected across between system's total loop and the ground, and constantly variation can both be handled by this sampling resistor reflection on system's total loop.
As shown in Figure 3, normalized current is provided with unit 5 and is made of the two divider resistance R7 and the R8 that are cascaded, and the end of divider resistance R8 is connected with power end VCC, and the other end of divider resistance R8 is connected with divider resistance R7, and the other end of divider resistance R7 is connected with ground.This normalized current is provided with unit 5, and resistance that can be by regulating two divider resistance R7 and R8 is to set suitable standard current value.
As shown in Figure 3, described comparing unit 6 is made of a comparator U2, and described comparator U2 includes: input pin 9, input pin 10 and output pin 8.Described input pin 10 is connected with the node of divider resistance R7 and R8; Described input pin 9 is connected with the output of amplifier U1 by resistance R 6, and the output of described comparator U2 is connected with the interrupt INT of micro-control unit 1.
As shown in Figure 3, micro-control unit 1 still is the controlling platform of battery unit 2 and load unit, and the working state of system signal of comparator U2 output can become the interrupt trigger signal of micro-control unit 1 instruction battery management system work or dormancy.
As from the foregoing, after system's total loop data that sampling resistor R1 collects in the present embodiment are amplified by amplifier U1, standard value by comparator U2 and setting compares again, the status signal that can obtain a high-low level removes to trigger micro-control unit, accomplish monitoring management constantly, and then realize that battery management system wakes up automatically and do not needing sleep mode automatically when battery operated when needs are battery operated.
Embodiment three:
Fig. 4 is a kind of particular circuit configurations schematic diagram of the embodiment of the invention three.
As shown in Figure 4, the difference of present embodiment and embodiment two only is that described comparator is integrated in in the control unit.
More than the technical scheme that the embodiment of the invention provided is described in detail, used specific case herein the principle and the execution mode of the embodiment of the invention are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (7)

1. method that reduces the battery management system power consumption, it is to be the management platform of battery management system with the micro-control unit, it is characterized in that, comprising:
Set a standard current value, described standard current value more than or equal to system system's total loop electric current when unloaded, smaller or equal to system the electric current of total loop when unloaded;
Acquisition system total loop size of current numerical value obtains a total loop current signal constantly;
The total loop current signal that collects and the standard current value of setting are compared, obtain a working state of system signal;
Micro-control unit reads described working state of system signal, and enters resting state or operating state according to this signal instruction battery management system.
2. the method for reduction battery management system power consumption according to claim 1 is characterized in that:
Described working state of system signal is a high level or a low level, and described high level sign total loop band carries work, the zero load of described low level sign total loop.
3. a low-power consumption battery management system comprises a micro-control unit, and described micro-control unit is characterized in that in order to control battery unit and load unit action:
This low-power consumption battery management system also comprises a current sampling unit and a comparing unit;
Described current sampling unit one end is connected with load unit, and described current sampling unit is used for constantly acquisition system total loop size of current numerical value, obtains a total loop current signal;
Described comparing unit comprises two inputs and an output;
One of them input of described comparing unit is provided with the unit with a normalized current and is connected, described normalized current is provided with the unit and is used to be provided with a standard current value, described standard current value more than or equal to system system's total loop electric current when unloaded, smaller or equal to system the electric current of total loop when unloaded;
Another input of described comparing unit is connected with current sampling unit, and described comparing unit compares the total loop current signal of input and the standard current value of setting, obtains a working state of system signal;
The output of described comparing unit is connected with micro-control unit, described micro-control unit reading system working state signal, and enter resting state or operating state according to this signal instruction battery management system.
4. low-power consumption battery management system according to claim 3 is characterized in that:
Described current sampling unit is made of a sampling resistor and an amplifier unit;
Described current sampling unit one end is connected with load unit, and specifically: an end of sampling resistor is connected with load unit, the other end ground connection of described sampling resistor;
Another input of described comparing unit is connected with current sampling unit, and specifically: another input of comparing unit is connected with the output of amplifier unit, and the input of described amplifier unit and sampling resistor are electrically connected with the node of load unit.
5. low-power consumption battery management system according to claim 3 is characterized in that:
Described normalized current is provided with the unit and is made of two divider resistances that are cascaded, and an end of this series circuit is connected with power end, and the other end of this series circuit is connected with ground;
One of them input of described comparing unit is provided with the unit with a normalized current and is connected, and specifically: one of them input of comparing unit is electrically connected with the node of two divider resistances.
6. low-power consumption battery management system according to claim 3 is characterized in that:
Described comparing unit is integrated in the micro-control unit.
7. according to each described low-power consumption battery management system of claim 3 to 6, it is characterized in that:
Described comparing unit is made of a comparator.
CN2010101485410A 2010-04-09 2010-04-09 Method for reducing consumption of battery management system and low-consumption battery management system Pending CN102214846A (en)

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CN106053932A (en) * 2016-06-29 2016-10-26 安徽锐能科技有限公司 Power consumption detection circuit for battery management system
CN106848454A (en) * 2017-03-20 2017-06-13 东莞博力威电池有限公司 A kind of management method of same mouth double cell
GB2548786A (en) * 2015-12-30 2017-10-04 Hyperdrive Innovation Ltd Battery management system
CN107408809A (en) * 2015-01-13 2017-11-28 特灵国际有限公司 Improved wireless hvac components
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109602088A (en) * 2012-05-14 2019-04-12 尼科投资控股有限公司 Electronics steam provides device
CN103138018A (en) * 2012-12-21 2013-06-05 惠州市亿能电子有限公司 Battery management system state switching method
CN103138018B (en) * 2012-12-21 2015-12-09 惠州市亿能电子有限公司 A kind of battery management system state switching method
CN107408809B (en) * 2015-01-13 2019-12-10 特灵国际有限公司 Improved wireless HVAC module
CN107408809A (en) * 2015-01-13 2017-11-28 特灵国际有限公司 Improved wireless hvac components
GB2548786A (en) * 2015-12-30 2017-10-04 Hyperdrive Innovation Ltd Battery management system
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CN106053932B (en) * 2016-06-29 2018-09-11 安徽锐能科技有限公司 Battery management system power consumption detection circuit
CN106053932A (en) * 2016-06-29 2016-10-26 安徽锐能科技有限公司 Power consumption detection circuit for battery management system
CN106848454A (en) * 2017-03-20 2017-06-13 东莞博力威电池有限公司 A kind of management method of same mouth double cell

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