CN103616558A - Voltage collecting device suitable for active power distribution network - Google Patents
Voltage collecting device suitable for active power distribution network Download PDFInfo
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- CN103616558A CN103616558A CN201310609072.1A CN201310609072A CN103616558A CN 103616558 A CN103616558 A CN 103616558A CN 201310609072 A CN201310609072 A CN 201310609072A CN 103616558 A CN103616558 A CN 103616558A
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Abstract
The invention provides a voltage collecting device suitable for an active power distribution network. The voltage collecting device comprises a battery pack. The battery pack comprises a plurality of battery cells connected in series, connection impedance is generated through series connection between the battery cells, the voltage collecting device further comprises a voltage collecting chip connected with the battery pack through a circuit, the voltage collecting chip is used for collecting voltage of each battery cell in the battery pack, the voltage collecting device further comprises an insulation impedance detecting circuit connected with the battery pack through a circuit, the insulation impedance detecting circuit is used for collecting contact impedance voltage of the connection impedance between the battery cells in the battery pack, the voltage collecting device further comprises a microprocessor connected with the voltage collecting chip and the insulation impedance detecting circuit. According to the voltage collecting device suitable for the active power distribution network, the voltage of each battery cell in the battery pack can be accurately collected both in the standing process and the charging and discharging process, and therefore the accuracy of the judgment of the performance of the battery cells can be improved.
Description
Technical field
the present invention relates to a kind of initiatively voltage collecting device of power distribution network that is applicable to.
Background technology
The accurate collection of energy-accumulating power station cell voltage is to control one of key factor of battery charging and discharging, raising battery performance.Existing cell voltage Acquisition Circuit only can gather very accurately the collection of voltage when battery system is standing, but the battery system discharging and recharging for WKG working, because cell is connected unstable with the splicing ear between cell, easily form certain contact impedance, make the battery management system of energy-accumulating power station cannot obtain data accurately and can not effectively control the work of battery.
Summary of the invention
A kind of initiatively voltage collecting device of power distribution network that is applicable to provided by the invention, no matter be in standing process or in the process discharging and recharging, can both to the voltage of each cell in electric battery, gather accurately, improve the accuracy to the judgement of cell performance.
In order to achieve the above object, the invention provides a kind of initiatively voltage collecting device of power distribution network that is applicable to, this voltage collecting device comprises electric battery, this battery pack is containing the cell of some series connection, by the series connection between cell and cell and produce and be connected impedance, described voltage collecting device also comprise circuit connect this electric battery voltage acquisition chip, this voltage acquisition chip gathers the voltage of each cell in electric battery, described voltage collecting device also comprises the isolated impedance testing circuit that circuit connects this electric battery, this isolated impedance testing circuit gathers the contact impedance voltage of the connection impedance between cell in electric battery, this voltage collecting device also comprises the microprocessor that connects voltage acquisition chip and isolated impedance testing circuit.
Described microprocessor connects isolated impedance testing circuit by A/D change-over circuit, and this microprocessor is connected voltage acquisition chip by isolation communicating circuit with communication isolating transformer.
Described isolated impedance testing circuit is difference input, and this isolated impedance testing circuit comprises magnetic isolation operational amplifier and the low-pass filter that circuit connects.
Between described voltage acquisition chip and isolation communicating circuit, be connected for SPI communication; Between isolation communicating circuit and microprocessor for CAN communication is connected; Between A/D change-over circuit and microprocessor for SPI communication is connected.
The present invention has well solved in the process discharging and recharging, owing to existing connection impedance between cell, make the inaccurate problem of voltage acquisition in city, improved the accuracy of battery management system for requirement and the performance judgement of the voltage acquisition of cell.
Accompanying drawing explanation
Fig. 1 is a kind of initiatively circuit diagram of the voltage collecting device of power distribution network that is applicable to provided by the invention;
Fig. 2 is the circuit diagram of isolated impedance testing circuit of the present invention.
Embodiment
Following according to Fig. 1 and Fig. 2, illustrate preferred embodiment of the present invention.
As shown in Figure 1, the invention provides a kind of initiatively voltage collecting device of power distribution network that is applicable to, this voltage collecting device comprises electric battery 100, the cell that this electric battery 100 comprises some series connection, by the series connection between cell and cell and produce and be connected impedance 103, described voltage collecting device also comprises the voltage acquisition chip 101 that circuit connects this electric battery 100, this voltage acquisition chip 101 gathers the voltage of each cell in electric battery 100, described voltage collecting device also comprises 100 the isolated impedance testing circuit 104 that circuit connects this electric battery, this isolated impedance testing circuit 104 gathers the contact impedance voltage of the connection impedance 103 between cell in electric battery 100.
Described voltage collecting device also comprises microprocessor 106, this microprocessor 106 connects isolated impedance testing circuit 104 by A/D change-over circuit 105, and this microprocessor 106 is connected voltage acquisition chip 101 by isolation communicating circuit 102 with communication isolating transformer 107.
The described built-in A/D converter of voltage acquisition chip 101 and voltage collection circuit, in the present embodiment, the model of this voltage acquisition chip 101 is AD7280A.
As shown in Figure 2, described isolated impedance testing circuit 104 is difference input, and this isolated impedance testing circuit 104 comprises magnetic isolation operational amplifier 1041 and the low-pass filter 1042 that circuit connects.
In the present embodiment, the model of described microprocessor 106 is MSP430F135.
Described communication isolating transformer 107 is magnetic isolating transformer.
Between described voltage acquisition chip 101 and isolation communicating circuit 102, be connected for SPI communication; Between isolation communicating circuit 102 and microprocessor 106 for CAN communication is connected; Between A/D change-over circuit 105 and microprocessor 106 for SPI communication is connected.
That joint cell that the measurement current potential of take is minimum is example, by voltage acquisition chip 101, gather the voltage at cell two ends, AD(modulus is being finished in voltage acquisition chip 101 inside to voltage data) conversion after, by communication isolating transformer 107, export to isolation communicating circuit 102, and obtain voltage U 1 after finally passing to microprocessor 106 analyzing and processing; Equally, after contact impedance voltage between the cell of 104 pairs of collections of isolated impedance testing circuit carries out impedance matching, low-pass filtering and isolation amplification, through A/D change-over circuit 105, after finally passing to microprocessor 106 analyzing and processing, obtain magnitude of voltage U2, the difference of the two is made as voltage U 3=U1-U2, i.e. the virtual voltage at final cell two ends.
When electric battery is during in static condition, the electric current flowing through in connection impedance between cell is zero, obtain the voltage U 2=0 of the connection impedance between cell, the virtual voltage U3 at final cell two ends no better than by voltage acquisition chip detection to voltage U 1.
In running order when electric battery, when charging or electric discharge, the electric current flowing through in the connection impedance between cell is non-vanishing, obtains the voltage U 2 ≠ 0 of the connection impedance between cell, the virtual voltage U3=U1-U2 at final cell two ends.
And no matter battery system, in static condition or in charging and discharging state, all can meet actual battery both end voltage U3=U1-U2.
Computing method for second section battery, the 3rd batteries just can obtain the final terminal voltage of each cell by that analogy.
The present invention can effectively remove the collection difference of the monomer voltage that the contact impedance that produces due to connection between cell brings, to having improved the raising of voltage acquisition precision and the accuracy of judgement of battery system.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.Those skilled in the art, read after foregoing, for multiple modification of the present invention with to substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (4)
1. one kind is applicable to the initiatively voltage collecting device of power distribution network, it is characterized in that, this voltage collecting device comprises electric battery (100), the cell that this electric battery (100) comprises some series connection, by the series connection between cell and cell and produce and be connected impedance (103), described voltage collecting device also comprises the voltage acquisition chip (101) that circuit connects (100) of this electric battery, this voltage acquisition chip (101) gathers the voltage of each cell in electric battery (100), described voltage collecting device also comprises the isolated impedance testing circuit (104) that circuit connects this electric battery (100), this isolated impedance testing circuit (104) gathers the contact impedance voltage of the connection impedance (103) between cell in electric battery (100), this voltage collecting device also comprises the microprocessor (106) that connects voltage acquisition chip (101) and isolated impedance testing circuit (104).
2. the initiatively voltage collecting device of power distribution network that is applicable to as claimed in claim 1, it is characterized in that, described microprocessor (106) connects isolated impedance testing circuit (104) by A/D change-over circuit (105), and this microprocessor (106) is connected voltage acquisition chip (101) by isolation communicating circuit (102) with communication isolating transformer (107).
3. the initiatively voltage collecting device of power distribution network that is applicable to as claimed in claim 1, it is characterized in that, described isolated impedance testing circuit (104) is difference input, and this isolated impedance testing circuit (104) comprises magnetic isolation operational amplifier (1041) and the low-pass filter (1042) that circuit connects.
4. as being applicable to the initiatively voltage collecting device of power distribution network as described in any one in claim 1-3, it is characterized in that, described voltage acquisition chip (101) with isolate between communicating circuit (102) for SPI communication is connected; Between isolation communicating circuit (102) and microprocessor (106), be connected for CAN communication; Between A/D change-over circuit (105) and microprocessor (106) for SPI communication is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310609072.1A CN103616558A (en) | 2013-11-27 | 2013-11-27 | Voltage collecting device suitable for active power distribution network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310609072.1A CN103616558A (en) | 2013-11-27 | 2013-11-27 | Voltage collecting device suitable for active power distribution network |
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| CN103616558A true CN103616558A (en) | 2014-03-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308177A (en) * | 2020-05-11 | 2020-06-19 | 广东志高暖通设备股份有限公司 | Super capacitor measuring circuit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1533627A (en) * | 2001-05-22 | 2004-09-29 | ����Τ�����ʹ�˾ | Circuit formonitoring cells of multi-cell battery during charge |
| CN2886595Y (en) * | 2006-01-19 | 2007-04-04 | 北京世纪瑞尔技术股份有限公司 | Multi-parameter collecting device used for modularized storage battery |
| CN101191822A (en) * | 2006-12-02 | 2008-06-04 | 比亚迪股份有限公司 | Fuel cell voltage monitoring system and its method |
| CN101603981A (en) * | 2008-06-11 | 2009-12-16 | 上海汽车集团股份有限公司 | The monomer battery voltage measurement circuit of multi-section serial battery pack system for automobile |
| CN102043095A (en) * | 2010-10-22 | 2011-05-04 | 上海鼎研智能科技有限公司 | Method for monitoring impedance of connectors in power battery pack |
| 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 |
| CN102263304A (en) * | 2011-07-01 | 2011-11-30 | 山东上存能源股份有限公司 | Lithium-ion power battery and battery management system |
| CN102347629A (en) * | 2010-07-30 | 2012-02-08 | 三洋电机株式会社 | Power supply device |
-
2013
- 2013-11-27 CN CN201310609072.1A patent/CN103616558A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1533627A (en) * | 2001-05-22 | 2004-09-29 | ����Τ�����ʹ�˾ | Circuit formonitoring cells of multi-cell battery during charge |
| CN2886595Y (en) * | 2006-01-19 | 2007-04-04 | 北京世纪瑞尔技术股份有限公司 | Multi-parameter collecting device used for modularized storage battery |
| CN101191822A (en) * | 2006-12-02 | 2008-06-04 | 比亚迪股份有限公司 | Fuel cell voltage monitoring system and its method |
| CN101603981A (en) * | 2008-06-11 | 2009-12-16 | 上海汽车集团股份有限公司 | The monomer battery voltage measurement circuit of multi-section serial battery pack system for automobile |
| CN102347629A (en) * | 2010-07-30 | 2012-02-08 | 三洋电机株式会社 | Power supply device |
| CN102043095A (en) * | 2010-10-22 | 2011-05-04 | 上海鼎研智能科技有限公司 | Method for monitoring impedance of connectors in power battery pack |
| 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 |
| CN102263304A (en) * | 2011-07-01 | 2011-11-30 | 山东上存能源股份有限公司 | Lithium-ion power battery and battery management system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308177A (en) * | 2020-05-11 | 2020-06-19 | 广东志高暖通设备股份有限公司 | Super capacitor measuring circuit |
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Effective date of registration: 20140910 Address after: 200245 Dongchuan Road, Shanghai, No. 2965, No. Applicant after: Shanghai Institute of Space Power-Sources Address before: 200245 Dongchuan Road, Shanghai, No. 2965, No. Applicant before: Shanghai Institute of Space Power-Sources Applicant before: Shanghai Power Storage Battery Systems Engineering Technology Co., Ltd. |
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Application publication date: 20140305 |