CN103633700B - A kind of direct current system of multiple-connected battery internal resistance on-line checkingi - Google Patents
A kind of direct current system of multiple-connected battery internal resistance on-line checkingi Download PDFInfo
- Publication number
- CN103633700B CN103633700B CN201310641901.4A CN201310641901A CN103633700B CN 103633700 B CN103633700 B CN 103633700B CN 201310641901 A CN201310641901 A CN 201310641901A CN 103633700 B CN103633700 B CN 103633700B
- Authority
- CN
- China
- Prior art keywords
- circuit
- internal resistance
- storage battery
- intelligent object
- direct current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000003321 amplification Effects 0.000 claims abstract description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 9
- 238000012937 correction Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of direct current system of multiple-connected battery internal resistance on-line checkingi, relate to accumulator internal resistance detection technique field.This system comprises and storage battery intelligent object one to one, and each intelligent object connects Alternating Current Unit by mains switch; Intelligent object comprises the EMI circuit be connected with Alternating Current Unit, the power factor correction circuit, control circuit and the constant0current generator that are connected with EMI circuit respectively, and power factor correction circuit connects a DC/DC converter and the 2nd DC/DC converter; Are produced from the two ends that constant0current generator is connected in parallel on storage battery; Control circuit comprises the AC differential circuit being connected in parallel on storage battery two ends, the analog multiplier be connected with AC differential circuit, the low pass filter be connected with analog multiplier, the DC amplification circuit be connected with low pass filter, the analog/digital conversion circuit be connected with DC amplification circuit, the single-chip microcomputer be connected with analog/digital conversion circuit.The actual internal resistance of real-time online measuring single battery, improves the reliability of direct current system.
Description
Technical field
The present invention relates to accumulator internal resistance detection technique field, specifically a kind of direct current system of multiple-connected battery internal resistance on-line checkingi.
Background technology
Storage battery is the important component part of direct current system, determines the preparation time of system.And the internal resistance size of storage battery determines the quality of its performance.Internal resistance is larger, and the energy of storage battery autophage is more, and the service efficiency of storage battery is lower.Storage battery heating when charging that internal resistance is very large is very serious, when the heat of generation cannot distribute in time, can cause the thermal runaway of battery further, produce very large pressure, once pressure exceedes the maximum bearing ability of battery by inside battery.To cause blast and the chain reaction thereof of battery, consequence will be very serious.And traditional direct current system often can only carry out the on-line measurement of voltage and temperature to battery, on-line measurement cannot be carried out to the internal resistance of battery, when measuring the internal resistance of cell, can only measure after battery pack power-off detachment system again, need human and material resources and the time of at substantial.
Summary of the invention
In order to solve the shortcoming of above-mentioned prior art, the invention provides a kind of direct current system of multiple-connected battery internal resistance on-line checkingi, the actual internal resistance of energy real-time online measuring single battery, the problem of Timeliness coverage storage battery is also removed a hidden danger in time, improve the reliability of direct current system, reduce difficulty and the human and material resources cost of system maintenance.
The present invention realizes with following technical scheme: a kind of direct current system of multiple-connected battery internal resistance on-line checkingi, comprise with storage battery one_to_one corresponding for controlling accumulator cell charging and discharging and detecting the intelligent object of its internal resistance, each intelligent object connects Alternating Current Unit by mains switch; Described intelligent object comprises the EMI circuit be connected with Alternating Current Unit, the circuit of power factor correction, control circuit and the constant0current generator that are connected with EMI circuit respectively, and circuit of power factor correction connects a DC/DC converter and the 2nd DC/DC converter; The DC/DC converter described in alternating constant exciting current signal that constant0current generator is connected in parallel on the two ends generation 1.0kHZ ± 0.1kHZ of storage battery exports direct current 12V connection storage battery; The 2nd described DC/DC converter exports direct current 110V or 220V and powers to DC equipment by feeding out switch;
Described control circuit comprises the AC differential circuit being connected in parallel on storage battery two ends, the analog multiplier be connected with AC differential circuit, the low pass filter be connected with analog multiplier, the DC amplification circuit be connected with low pass filter, the analog/digital conversion circuit be connected with DC amplification circuit, the single-chip microcomputer be connected with analog/digital conversion circuit; Intelligent object group is connected to form by communication current equalizer between single-chip microcomputer in multiple intelligent object.
The invention has the beneficial effects as follows: the automatic complete operation of inner walkway of system and detection in system, to only have a storage battery carrying out inner walkway operation at any time, ensure that security of system not by the impact of inner walkway operation; Accurate control and measurement can be realized to the voltage and current of storage battery simultaneously, ensure the accuracy of inner walkway data, improve the reliability of direct current system, reduce difficulty and the human and material resources cost of system maintenance.
Accompanying drawing explanation
Fig. 1 is the circuit diagram based on the indirect parallel connection direct power-supply system of storage battery;
Fig. 2 is intelligent object principle assumption diagram;
Fig. 3 is control circuit schematic diagram;
Fig. 4 is Alternating Current Unit principle schematic.
Embodiment
As Figure 1-3, a kind of direct current system of multiple-connected battery internal resistance on-line checkingi comprises with storage battery 12 one_to_one corresponding for controlling storage battery 12 discharge and recharge and detecting the intelligent object 11 of its internal resistance, the Alternating Current Unit 10 be connected with intelligent object 11; Described intelligent object 11 comprises the EMI circuit be connected with Alternating Current Unit 10, the circuit of power factor correction, control circuit and the constant0current generator that are connected with EMI circuit respectively, circuit of power factor correction connects a DC/DC converter and the 2nd DC/DC converter; A described DC/DC converter exports direct current 12V and connects storage battery, constant0current generator is connected in parallel on the alternating constant exciting current signal of the two ends generation 1.0kHZ ± 0.1kHZ of storage battery 12, and the 2nd described DC/DC converter exports direct current 110V or 220V and powers to DC equipment by feeding out switch;
Described control circuit comprises the AC differential circuit being connected in parallel on storage battery two ends, the analog multiplier be connected with AC differential circuit, the low pass filter be connected with analog multiplier, the DC amplification circuit be connected with low pass filter, the analog/digital conversion circuit be connected with DC amplification circuit, the single-chip microcomputer be connected with analog/digital conversion circuit; Intelligent object group is connected to form by communication current equalizer between single-chip microcomputer in multiple intelligent object 11.
As shown in Figure 4, described Alternating Current Unit 10 comprises 1#AC380V input and 2#AC380V input, and 1#AC380V input and 2#AC380V input are powered to intelligent object group respectively by service entrance switch, interchange monitoring unit is connected with between 1#AC380V input and 2#AC380V input, described interchange monitoring unit comprises the ac signal acquisition unit for gathering 1#AC380V input and 2#AC380V input signal, the power supply status judging unit for sentencing AC power supplies state is connected with ac signal acquisition unit, the signal that power supply status judging unit exports sends into logic switch by logic export and logic interfacing, logic switch exports connection one mechanical type interlocking contact device, the normally opened contact of two contactors in mechanical type interlocking contact device is connected between service entrance switch and intelligent object group.When under 1#AC380V input and all normal situation of 2#AC380V input, realize 1#AC380V input power supply by logic switch and mechanical type interlocking contact device, when 1#AC380V input is broken down, 2#AC380V input is used for power supply.Power supply status judging unit is for judging under-voltage, overvoltage and the default phase signal of AC power.
Intelligent object 11 can carry out management of charging and discharging and inner walkway to storage battery 12, and system centralized monitor can the work of parallel units in control system, and can carry out communication to transmit various data with monitoring backstage.
When system is normal, in the charge state, the DC/DC converter in intelligent object regulates charging voltage and electric current according to the monitor command received, and is corresponding charge in batteries; In the discharged condition, a DC/DC converter regulates the final discharging voltage of corresponding storage battery according to the monitor command received, and carries out equal floating charge to maintain the energy of storage battery to storage battery.
When system needs to carry out accumulator internal resistance measurement, an intelligent object in this system starts the stable sinusoidal signal of constant0current generator accumulators one, voltage response signal on storage battery two ends is multiplied through analog multiplier with the sinusoidal signal producing alternating constant source by AC differential circuit, again the output voltage signal of analog multiplier is passed through filter circuit, AC signal is made to change direct current signal into, direct current signal carries out analog-to-digital conversion after direct current amplifier, value after conversion is sent into single-chip microcomputer process, obtain the internal resistance value of battery, and these internal resistance data and internal resistance historical data are analyzed and are judged, internal resistance data and judged result are uploaded to background monitoring system.After in system, an accumulator internal resistance has been tested, in monitoring unit control system, another intelligent cell has been measured accumulator internal resistance.Process is described above, until all storage batterys all complete inner walkway in whole system, the internal resistance of cell test process of whole system terminates.
Intelligent object applies at battery two terminals the alternating constant exciting current signal that a frequency is 1.0kHZ ± 0.1kHZ when measuring the internal resistance of cell, and another two terminals are used for measuring.After response voltage signal refers to that storage battery injects alternating constant exciting current signal, at the ac voltage signal that its two ends are measured, sinusoidal signal is the input signal as constant0current generator produced through D/A.
If sinusoidal signal is:
（1）
The response voltage signal at storage battery two ends is:
（2）
Wherein θ is the alternating current of injecting accumulator and the phase difference of its two ends response voltage signal,
By having after analog multiplier:
（3）
Wherein K is the amplification coefficient of analog multiplier;
Filter alternating component after carrying out low-pass filtering to obtain:
（4）
Survey internal resistance principle by alternating current method to obtain:
（5）
In formula, I is the maximum of AC constant-current source signal.Relatively (4), (5) can obtain:
In above formula, K, A, I are known quantities, and u delivers to through A/D sampling the sampled value that single-chip microcomputer carries out processing, and carries out the internal resistance that a simple division arithmetic just can obtain storage battery in single-chip microcomputer.
In the direct current system indirectly in parallel based on storage battery, intelligent object can carry out on-line measurement to the single battery internal resistance of its correspondence.Intelligent object can to the storage battery of this unit carry out safety, reliably, internal resistance measurement accurately, there is following features: 1) can be processed by sending into single-chip microcomputer after circuit conversion by the voltage signal on storage battery two ends, obtaining the data of actual battery internal resistance accurately;
2) can be measured online the accumulator internal resistance in system by Local or Remote operation;
3), in on-line measurement internal resistance process, any impact is not produced on the safety and reliability of system;
4) to abnormal conditions, alarm is carried out to internal resistance data analysis.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (2)
1.
oneplant the direct current system of multiple-connected battery internal resistance on-line checkingi, it is characterized in that: comprise with storage battery (12) one_to_one corresponding for controlling storage battery (12) discharge and recharge and detecting the intelligent object (11) of its internal resistance, each intelligent object (11) connects Alternating Current Unit (10) by mains switch; Described intelligent object (11) comprises the EMI circuit be connected with Alternating Current Unit (10), the circuit of power factor correction, control circuit and the constant0current generator that are connected with EMI circuit respectively, circuit of power factor correction connects a DC/DC converter and the 2nd DC/DC converter; A described DC/DC converter exports direct current 12V and connects storage battery, constant0current generator is connected in parallel on the alternating constant exciting current signal of the two ends generation 1.0kHZ ± 0.1kHZ of storage battery (12), and the 2nd described DC/DC converter exports direct current 110V or 220V and powers to DC equipment by feeding out switch;
Described control circuit comprises the AC differential circuit being connected in parallel on storage battery two ends, the analog multiplier be connected with AC differential circuit, the low pass filter be connected with analog multiplier, the DC amplification circuit be connected with low pass filter, the analog/digital conversion circuit be connected with DC amplification circuit, the single-chip microcomputer be connected with analog/digital conversion circuit; Intelligent object group is connected to form by communication current equalizer between single-chip microcomputer in multiple intelligent object (11).
2. the direct current system of a kind of multiple-connected battery internal resistance on-line checkingi according to claim 1, it is characterized in that: described Alternating Current Unit (10) comprises 1#AC380V input and 2#AC380V input, 1#AC380V input and 2#AC380V input are powered to intelligent object group respectively by service entrance switch, interchange monitoring unit is connected with between 1#AC380V input and 2#AC380V input, described interchange monitoring unit comprises the ac signal acquisition unit for gathering 1#AC380V input and 2#AC380V input signal, the power supply status judging unit for judging AC power supplies state is connected with ac signal acquisition unit, the signal that power supply status judging unit exports sends into logic switch by logic export and logic interfacing, logic switch exports connection one mechanical type interlocking contact device, the normally opened contact of two contactors in mechanical type interlocking contact device is connected between service entrance switch and intelligent object group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641901.4A CN103633700B (en) | 2013-12-03 | 2013-12-03 | A kind of direct current system of multiple-connected battery internal resistance on-line checkingi |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641901.4A CN103633700B (en) | 2013-12-03 | 2013-12-03 | A kind of direct current system of multiple-connected battery internal resistance on-line checkingi |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103633700A CN103633700A (en) | 2014-03-12 |
| CN103633700B true CN103633700B (en) | 2016-03-23 |
Family
ID=50214438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310641901.4A Active CN103633700B (en) | 2013-12-03 | 2013-12-03 | A kind of direct current system of multiple-connected battery internal resistance on-line checkingi |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103633700B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659998B (en) * | 2019-01-03 | 2022-05-13 | 歌尔科技有限公司 | Battery protection circuit, protection method and wearable device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308858A (en) * | 2012-03-07 | 2013-09-18 | 深圳市柏特瑞电子有限公司 | Online inspection system for internal resistances of batteries |
| CN203587700U (en) * | 2013-12-03 | 2014-05-07 | 国家电网公司 | Internal resistance online detection device for parallelly-connected storage battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011253721A (en) * | 2010-06-02 | 2011-12-15 | Toyota Motor Corp | Voltage monitor device |
-
2013
- 2013-12-03 CN CN201310641901.4A patent/CN103633700B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308858A (en) * | 2012-03-07 | 2013-09-18 | 深圳市柏特瑞电子有限公司 | Online inspection system for internal resistances of batteries |
| CN203587700U (en) * | 2013-12-03 | 2014-05-07 | 国家电网公司 | Internal resistance online detection device for parallelly-connected storage battery |
Non-Patent Citations (1)
| Title |
|---|
| 基于MSP430单片机的智能电池监测仪;姜印平等;《仪器仪表学报》;20080531;第29卷(第5期);第1040-1043页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103633700A (en) | 2014-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103605000B (en) | A kind of multiple-connected battery internal resistance online test method | |
| CN203587700U (en) | Internal resistance online detection device for parallelly-connected storage battery | |
| CN103219766B (en) | Non-floating charge lithium electricity type station DC power system | |
| CN204030640U (en) | Batteries novel maintenance monitoring intelligent device | |
| CN103364631A (en) | High-voltage user photovoltaic power generation electric energy metering system and method thereof | |
| CN111007419A (en) | Transformer substation direct current system running state on-line monitoring system | |
| CN205333828U (en) | Aerogenerator battery on -line monitoring system | |
| CN106394300A (en) | Power management system | |
| CN209709744U (en) | A kind of communication base station power supply system that retired power battery echelon utilizes | |
| CN107884722B (en) | Online distributed storage battery monitoring equipment | |
| CN206820086U (en) | A kind of accumulator on-line maintenance control circuit and system | |
| CN202374006U (en) | Lithium ion battery charging power supply with activation function | |
| CN204131151U (en) | A kind of storage battery automatic on-line electric discharge device | |
| CN103633700B (en) | A kind of direct current system of multiple-connected battery internal resistance on-line checkingi | |
| CN106655354A (en) | Pulse width modulation technology-based remote wireless battery management system and method | |
| CN104734263B (en) | A kind of sharing control system and method | |
| CN115864653A (en) | Remote inversion feed-type storage battery pack online capacity checking system and method | |
| CN202068207U (en) | Intelligent storage battery formation charging and discharging integrated mechanism and control system | |
| CN109038828A (en) | A kind of storage batteries of transformer substation and battery room complex control system and its control method | |
| CN207835131U (en) | Intelligent charge control device for wind-driven generator | |
| CN205049712U (en) | Synchronous four line method sampling internal resistance of cell device | |
| CN204794202U (en) | Online balanced device of storage battery of transformer substation | |
| CN204425009U (en) | Based on the battery monitoring device that MCU controls | |
| CN107979324A (en) | Solar recharging system and its control method | |
| CN203553295U (en) | Novel safety management system for power battery pack of electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |