CN102723755A - Battery pack information acquisition management structure - Google Patents
Battery pack information acquisition management structure Download PDFInfo
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- CN102723755A CN102723755A CN2012101960625A CN201210196062A CN102723755A CN 102723755 A CN102723755 A CN 102723755A CN 2012101960625 A CN2012101960625 A CN 2012101960625A CN 201210196062 A CN201210196062 A CN 201210196062A CN 102723755 A CN102723755 A CN 102723755A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 6
- 239000000178 monomer Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 4
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The invention belongs to the technical field of batteries, and relates to a battery management system structure applied to multiple strings of batteries. According to the invention, a single battery or binary battery is divided into an acquisition control unit, and a serial bus structure is expanded to different continuous voltage domains by a level conversion technology; and thus, the data communication and control of each voltage domain are realized, the topological mechanism of the whole battery management system is simplified, the reliability, flexibility and maintainability of the battery management system are greatly improved, and the cost of the whole battery system is reduced.
Description
Technical field:
The invention belongs to the battery technology field, relate in particular to a kind of battery pack that is used for the collection of information such as every batteries voltage, the internal resistance of cell, battery temperature and the topological structure of control, and through the information of gathering being handled the management that realizes battery pack.
Background technology:
Battery is used so that higher output voltage and big drive current to be provided by series, parallel usually, and now a lot of high power battery power supplies are all adopted by a plurality of cell series, parallel and constituted the battery system power supply.
In order to guarantee the safety of battery system, we must monitor information such as every batteries voltage, the internal resistance of cell, battery temperature at any time, and according to relevant information, the charging of control battery pack, discharge guarantee the safe handling of battery.Simultaneously also can be used for diagnosing, showing the state information (the for example electric weight of battery, " health status " etc.) of battery.Conventional battery information gathering structure is that whole battery group is divided into the plurality of sub group, and each son group is an acquisition system altogether, the data of each non-acquisition system is altogether gathered through the isolation technology of gathering then again, is used for management control.Therefore, the connecting line construction more complicated of existing battery management system, the reliability of battery management system is not high, and the maintainability of battery pack is not strong, and the battery management system cost is higher, and the structure of battery pack is stiff, can not satisfy wider application demand.
Summary of the invention:
The object of the invention is exactly to realize that a kind of new battery pack collection gathers structure; With every joint (or the parallel connection of a plurality of monomer) battery is that a collecting unit is (for the complexity of balance acquisition controlling unit cost and line; Can expand two joint series-connected cells as a collecting unit), utilize serial line interface then, with the serial line interface cascade of each collecting unit; Scan and read, gather image data.Can transmit control command through serial line interface again each collecting unit is controlled according to the analyzing and processing of image data simultaneously; For example can control the start and stop of equalization function.
The present invention has realized at continuous different voltage domains, adopts non-isolation technology that the Information Monitoring of each voltage domain is gathered through the simple serial bus, and can transmit control command; Serial bus structure and communication mode are expanded to the data acquisition and the control of continuous different voltage domains.
This invention can be simplified the connecting line construction of existing battery management system greatly, improves the reliability of battery management system, improves the maintainability of battery pack, reduces the cost of battery management system.And can make the structure of battery pack flexible, adapt to wider application demand.
Description of drawings
Fig. 1 monomer structure serial acquisition control system sketch map.
Embodiment:
As shown in Figure 1, monomer structure serial acquisition control system of the present invention in this structure, has following characteristics: N+1 continuous monitored battery, and voltage domain is V0-Vn;
The monomer or the monomer batteries in parallel connection of N+1 series connection, each battery lays respectively among the V0-Vn voltage domain; Each voltage domain is one and carries out control unit, accomplishes each voltage domain data acquisition control through serial bus signal.
Main control unit is initiated serial bus signal; And produce the not overlapping control signal that enables in proper order through the logic control of each voltage domain; Make at synchronization and have only the acquisition controlling of a voltage domain effective, accomplish data acquisition, transmission, the control of this voltage domain constantly at this.
Clock, data, enable signal port signal in the universal serial bus are linked to each other with the corresponding signal of adjacent voltage domain, constitute the loop, make the logic level of different voltage domains produce corresponding identity logic level through level conversion at different voltage domains.
Among voltage domain V0, the X1 port of main control unit is connected with the universal serial bus that is connected between control unit and the level switch module through universal serial bus;
With among each voltage domain, the anode of each cell is connected with the X2 port with the X1 of control unit respectively with negative electrode, and the serial bus port of said control unit is connected with an end of level switch module through universal serial bus;
Wherein, begin to voltage domain V from voltage domain V0
N-1, another port of level switch module is connected through control unit in universal serial bus and the next voltage domain and the universal serial bus between the level switch module, and the other end sky of the level switch module among last voltage domain Vn connects.X1 is the power end of this voltage domain in each voltage domain, and X2 is the ground end of this voltage domain.
The operation principle of this acquisition control system is following:
1.V0-Vn be continuous n+1 step voltage territory.
Control unit can through analog-to-digital conversion and assist control accomplish this voltage domain information such as cell voltage, the internal resistance of cell, battery temperature, battery status collection and convert serial data into.
3. universal serial bus comprises clock, data, sheet choosing (enabling) signal (being used for controlling voltage domain data acquisition and data I/O); Wherein, Clock, enable signal are single signal, and data-signal is output single signal or input, two signals of output for each control unit.
4. level switch module is with adjacent voltage domain signal transmission.
5. main control unit is accomplished gathering of each voltage domain control unit serial data through clock, data, chip selection signal and is managed.
6. through the level conversion mode, make the logic level of same voltage domain, produce mapping at adjacent voltage domain.
7. clock signal, data-signal (I/O), the control signal correspondences such as (sheet select/enables) with universal serial bus is created in each voltage domain, and can transmits.
8. with the Control on Communication mode of standard serial bus, expand to continuous different voltage domain, accomplish the data acquisition and the control of different voltage domains.
9. convert analog-digital conversion data or other states and control information to serial data, transmit through universal serial bus.
The present invention uses the standard serial data/address bus, does not increase under other control signal wire situation, expands to data communication and control in the continuous different voltage domain.Simplify the connecting line construction of existing battery management system, improve the reliability of battery management system, improve the maintainability of battery pack, reduce the cost of battery management system.And can make the structure of battery pack flexible, adapt to wider application demand.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (11)
1. battery pack information acquisition control system is characterized in that: in same voltage domain, a plurality of equipment serial communication modes expand in the continuous different voltage domain in a plurality of equipment serial communications.
2. battery pack information acquisition control system as claimed in claim 1, it is characterized in that: it comprises:
N+1 continuous monitored battery, voltage domain is V0-Vn;
The monomer or the monomer batteries in parallel connection of N+1 series connection, each battery lays respectively among the V0-Vn voltage domain;
Among voltage domain V0, the X1 port of main control unit is connected with the universal serial bus that is connected between control unit and the level switch module through universal serial bus;
X1 is the power end of this voltage domain in each voltage domain, and X2 is the ground end of this voltage domain; With among each voltage domain, the anode of each cell is connected with the X2 port with the X1 of control unit respectively with negative electrode, and the serial bus port of said control unit is connected with an end of level switch module through universal serial bus;
Wherein, begin to voltage domain V from voltage domain V0
N-1, another port of level switch module is connected through control unit in universal serial bus and the next voltage domain and the universal serial bus between the level switch module, and the other end sky of the level switch module among last voltage domain Vn connects.
3. battery pack information acquisition control system as claimed in claim 2 is characterized in that: each voltage domain is one and carries out control unit, accomplishes each voltage domain data acquisition control through serial bus signal; Main control unit is initiated serial bus signal; And produce the not overlapping control signal that enables in proper order through the logic control of each voltage domain; Make at synchronization and have only the acquisition controlling of a voltage domain effective, accomplish data acquisition, transmission, the control of this voltage domain constantly at this; Clock, data, enable signal port signal in the universal serial bus are linked to each other with the corresponding signal of adjacent voltage domain, constitute the loop, make the logic level of different voltage domains produce corresponding identity logic level through level conversion at different voltage domains.
4. battery pack information acquisition control system as claimed in claim 2 is characterized in that: universal serial bus comprises clock signal, data-signal, enable signal.
5. battery pack information acquisition control system as claimed in claim 4 is characterized in that: wherein, clock signal, enable signal are single signal, and data-signal is output single signal or input, two signals of output for each control unit.
6. battery pack information acquisition control system as claimed in claim 4 is characterized in that: wherein, through producing the nonoverlapping control signal that enables of phase place, the different voltage domain control units of sequential control are effectively worked.
7. battery pack information acquisition control system as claimed in claim 2; It is characterized in that: said control unit is accomplished the acquisition controlling of the information such as cell voltage, the internal resistance of cell, battery temperature, battery status of this voltage domain through analog-to-digital conversion and assist control, and carries out transfer of data through serial mode.
8. battery pack information acquisition control system as claimed in claim 2 is characterized in that: said main control unit is accomplished gathering of each voltage domain control unit serial data through clock, data, chip selection signal and is managed.
9. battery pack information collection control method; With every joint or a plurality of monomer batteries in parallel connection is a collecting unit, utilizes serial line interface then, with the serial line interface cascade of each collecting unit; Scan and read; Gather image data, can transmit control command through serial line interface again each collecting unit is controlled according to the analyzing and processing of image data simultaneously.
10. battery pack information collection control method as claimed in claim 9 is characterized in that: saidly transmit control command through serial line interface each control unit functional part is controlled to be: the start and stop of control equalization function.
11. battery pack information collection control method as claimed in claim 10 is characterized in that: it adopts each said battery pack information acquisition control system of claim 1-8 to realize said method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101960625A CN102723755A (en) | 2012-06-14 | 2012-06-14 | Battery pack information acquisition management structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101960625A CN102723755A (en) | 2012-06-14 | 2012-06-14 | Battery pack information acquisition management structure |
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| CN102723755A true CN102723755A (en) | 2012-10-10 |
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| CN2012101960625A Pending CN102723755A (en) | 2012-06-14 | 2012-06-14 | Battery pack information acquisition management structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345283A (en) * | 2014-11-05 | 2015-02-11 | 天津铁路信号有限责任公司 | Battery information acquisition unit |
| CN104426526A (en) * | 2013-08-21 | 2015-03-18 | Arm有限公司 | Communication Between Voltage Domains |
| CN110048488A (en) * | 2019-05-16 | 2019-07-23 | 西北工业大学 | A kind of cascade structure and balance control method of series-connected cell group active equalization module |
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| US20100259299A1 (en) * | 2009-04-13 | 2010-10-14 | International Business Machines Corporation | Voltage conversion and integrated circuits with stacked voltage domains |
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| CN102246236A (en) * | 2008-12-17 | 2011-11-16 | 高通股份有限公司 | Self-tuning of signal path delay in circuit employing multiple voltage domains |
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2012
- 2012-06-14 CN CN2012101960625A patent/CN102723755A/en active Pending
Patent Citations (5)
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| CN101141012A (en) * | 2007-01-19 | 2008-03-12 | 华南理工大学 | A dynamic balance management system for distributed power battery packs |
| CN102246236A (en) * | 2008-12-17 | 2011-11-16 | 高通股份有限公司 | Self-tuning of signal path delay in circuit employing multiple voltage domains |
| US20100259299A1 (en) * | 2009-04-13 | 2010-10-14 | International Business Machines Corporation | Voltage conversion and integrated circuits with stacked voltage domains |
| JP2011232161A (en) * | 2010-04-27 | 2011-11-17 | Oki Semiconductor Co Ltd | Semiconductor device and monitoring method of battery voltage |
| CN102116847A (en) * | 2011-01-19 | 2011-07-06 | 湖南科力远新能源股份有限公司 | Single battery performance parameter acquisition system for battery pack |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426526A (en) * | 2013-08-21 | 2015-03-18 | Arm有限公司 | Communication Between Voltage Domains |
| CN104426526B (en) * | 2013-08-21 | 2019-06-07 | Arm有限公司 | Communication between voltage domain |
| CN104345283A (en) * | 2014-11-05 | 2015-02-11 | 天津铁路信号有限责任公司 | Battery information acquisition unit |
| CN110048488A (en) * | 2019-05-16 | 2019-07-23 | 西北工业大学 | A kind of cascade structure and balance control method of series-connected cell group active equalization module |
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Application publication date: 20121010 |