CN204376502U - A kind of lithium cell charging control device - Google Patents
A kind of lithium cell charging control device Download PDFInfo
- Publication number
- CN204376502U CN204376502U CN201520119751.5U CN201520119751U CN204376502U CN 204376502 U CN204376502 U CN 204376502U CN 201520119751 U CN201520119751 U CN 201520119751U CN 204376502 U CN204376502 U CN 204376502U
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- Prior art keywords
- circuit
- lithium battery
- charging circuit
- battery group
- input
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A kind of lithium cell charging control device, relates to lithium battery.Be provided with voltage collection circuit, scale operation amplifying circuit, A/D change-over circuit, single chip machine controlling circuit, main charging circuit, secondary charging circuit; The external lithium battery group of collection signal input of described voltage collection circuit, the lithium battery group state information of voltage collection circuit exports the input of termination scale operation amplifying circuit, the output termination A/D change-over circuit of scale operation amplifying circuit, A/D change-over circuit connects single chip machine controlling circuit; The control command output port of single chip machine controlling circuit connects the input of main charging circuit and the input of secondary charging circuit respectively, and the output of main charging circuit and the output of secondary charging circuit connect lithium battery group respectively, charge to lithium battery group.First quick charge is carried out to battery pack by main charging circuit, be charged into row trickle charge by pair again etc. final stage, while accurately controlling, in turn ensure that charge efficiency like this.There is simple, accurate, reliable, low cost and other advantages.
Description
Technical field
The utility model relates to lithium battery, especially relates to a kind of lithium cell charging control device.
Background technology
In lithium battery group, whether each cell has and fills deficiency or overcharge phenomenon in charging process, such as giving in batteries charging process, general charger charging voltage or electric current larger, be not easy to control, often occur overcharging or fill not foot phenomenon, should analogue be avoided and cause the reduced lifetime of battery pack.
In recent years, along with the fast development of fuel-engined vehicle industry, automobile quantity constantly rises, for our life brings great convenience.But fuel-engined vehicle consumes a large amount of non-renewable resources, also bring a large amount of auto-pollutions.National governments and Automobile Enterprises generally recognize that energy-conservation and reduction of discharging is the main direction of future automobile technical development, and the research and development of new-energy automobile is more and more paid attention to.Take electric power as power source due to electric automobile, comprise pure electric automobile EV and mixed power electric car HEV, have noise little, without exhaust pollution, easy-maintaining, can low power consumption be utilized during charging and the advantage such as energy-conservation, therefore receive the favor of national governments and enterprise.
When electric motor car is applied, battery life has a strong impact on electric vehicle performance.And lithium battery is subject to himself electrochemical properties and physical characteristic and the restriction in manufacturing process, each cell also exists inconsistency when producing.Current most of group charger all only has master to fill part, the quick charger adapted is made according to battery charge characteristic, froufrou saves the charging interval, often because charging voltage or charging current excessive, finally occur filling deficiency or overcharging phenomenon, increase the inconsistency of cell, have a strong impact on battery life.
Summary of the invention
The purpose of this utility model is to provide a kind of lithium cell charging control device.
The utility model is provided with voltage collection circuit, scale operation amplifying circuit, A/D change-over circuit, single chip machine controlling circuit, main charging circuit, secondary charging circuit; The external lithium battery group of collection signal input of described voltage collection circuit, the lithium battery group state information of voltage collection circuit exports the input of termination scale operation amplifying circuit, the output termination A/D change-over circuit of scale operation amplifying circuit, A/D change-over circuit connects single chip machine controlling circuit; The control command output port of single chip machine controlling circuit connects the input of main charging circuit and the input of secondary charging circuit respectively, and the output of main charging circuit and the output of secondary charging circuit connect lithium battery group respectively, charge to lithium battery group.
The state information of voltage collection circuit of the present utility model to battery pack is sampled and monitors, and give single chip machine controlling circuit result, single chip machine controlling circuit controls main charging circuit and each secondary charging circuit according to the sample information of battery management system, information according to each cell judges, determines that the operation of main charging circuit or secondary charging circuit controls.
Specific works process of the present utility model is: first gather each cell information by voltage collection circuit, single-chip microcomputer is given by testing result, single-chip microcomputer fills cutoff voltage value with preset master again and compares, export corresponding control command: detected value is lower than starting main charging circuit during limit value, main charging circuit is stopped to charge to present battery when being equal to or greater than limit value, next battery is charged, and start secondary charging circuit present battery is charged, until monomer battery voltage value equals preset secondary charging voltage value, and then next cell is charged, when all batteries have charged complete all, control indicating circuit again, the indicator light of display charging complete.
The utility model can be accurate to two percentage points to the detection of voltage and judgement.Under the theory accurately controlled instructs, select first to carry out quick charge to battery pack by main charging circuit, be charged into row trickle charge by pair again etc. final stage, while accurately controlling, in turn ensure that charge efficiency like this.The utility model has simply, accurate, reliable, low cost and other advantages.
Accompanying drawing explanation
Fig. 1 is the system configuration composition frame chart of the utility model embodiment;
Fig. 2 is the voltage collection circuit schematic diagram of the utility model embodiment;
The main charging circuit schematic diagram of Fig. 3 the utility model embodiment;
Fig. 4 is the secondary charging circuit schematic diagram of the utility model embodiment;
Fig. 5 is the operation amplifier circuit schematic diagram of the utility model embodiment;
Fig. 6 is the power module schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
See Fig. 1, the utility model embodiment is provided with voltage collection circuit 1, scale operation amplifying circuit 2, A/D change-over circuit 3, single chip machine controlling circuit 4, main charging circuit 5, secondary charging circuit 6; The external lithium battery group A of collection signal input of described voltage collection circuit 1, the lithium battery group state information of voltage collection circuit 1 exports the input of termination scale operation amplifying circuit 2, output termination A/D change-over circuit 3, the A/D change-over circuit 3 of scale operation amplifying circuit 2 connects single chip machine controlling circuit 4; The control command output port of single chip machine controlling circuit 4 connects the input of main charging circuit 5 and the input of secondary charging circuit 6 respectively, and the output of main charging circuit 5 and the output of secondary charging circuit 6 meet lithium battery group A respectively, charge to lithium battery group A.
First carry out voltage acquisition to the cell of lithium battery group A respectively in a short period of time, voltage collection circuit as shown in Figure 2.And collection voltage is obtained accurate measured value by operational amplification circuit, the operation amplifier circuit schematic diagram of the utility model embodiment is as shown in Figure 5.Give single-chip microcomputer by testing result again, single-chip microcomputer fills cutoff voltage value with preset master again and compares.Shown in the main charging circuit of Fig. 3 the utility model, corresponding control command is exported: detected value is lower than starting main charging circuit during limit value by single-chip microcomputer, main charging circuit is stopped to charge to first battery when being equal to or greater than limit value, second battery is charged, shown in the secondary charging circuit of Fig. 4 the utility model, and start secondary charging circuit first battery is charged, until monomer battery voltage value equals preset secondary charging voltage value, and then next cell is charged, when all batteries have charged complete all, control indicating circuit again, the indicator light of display charging complete.Fig. 6 provides power module circuitry schematic diagram of the present utility model, and power module provides power supply for each circuit.
The utility model makes full use of that single-chip microcomputer reaction is fast, reliability is high, judge characteristic accurately, the aggregation of data com-parison and analysis of all cells will be detected, control main filling again respectively to charge to battery with secondary charging circuit, winner is filled fill with pair non-interference, accelerate the accuracy of charging rate and charging greatly, effectively extend the life-span of lithium battery group.
Claims (1)
1. a lithium cell charging control device, is characterized in that being provided with voltage collection circuit, scale operation amplifying circuit, A/D change-over circuit, single chip machine controlling circuit, main charging circuit, secondary charging circuit; The external lithium battery group of collection signal input of described voltage collection circuit, the lithium battery group state information of voltage collection circuit exports the input of termination scale operation amplifying circuit, the output termination A/D change-over circuit of scale operation amplifying circuit, A/D change-over circuit connects single chip machine controlling circuit; The control command output port of single chip machine controlling circuit connects the input of main charging circuit and the input of secondary charging circuit respectively, and the output of main charging circuit and the output of secondary charging circuit connect lithium battery group respectively, charge to lithium battery group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520119751.5U CN204376502U (en) | 2015-02-28 | 2015-02-28 | A kind of lithium cell charging control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520119751.5U CN204376502U (en) | 2015-02-28 | 2015-02-28 | A kind of lithium cell charging control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204376502U true CN204376502U (en) | 2015-06-03 |
Family
ID=53332682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520119751.5U Expired - Fee Related CN204376502U (en) | 2015-02-28 | 2015-02-28 | A kind of lithium cell charging control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204376502U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939995A (en) * | 2016-11-17 | 2017-07-11 | 东莞市晧业工业设计有限公司 | Photovoltaic intelligent street lamp |
-
2015
- 2015-02-28 CN CN201520119751.5U patent/CN204376502U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939995A (en) * | 2016-11-17 | 2017-07-11 | 东莞市晧业工业设计有限公司 | Photovoltaic intelligent street lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20180228 |