CN104779670B - It is a kind of to detect the method whether battery is full of - Google Patents
It is a kind of to detect the method whether battery is full of Download PDFInfo
- Publication number
- CN104779670B CN104779670B CN201510182728.5A CN201510182728A CN104779670B CN 104779670 B CN104779670 B CN 104779670B CN 201510182728 A CN201510182728 A CN 201510182728A CN 104779670 B CN104779670 B CN 104779670B
- Authority
- CN
- China
- Prior art keywords
- battery
- voltage
- constant
- charge
- full
- 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
Classifications
-
- 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
Abstract
The method whether battery is full of is detected the invention discloses a kind of, after trickle charge terminates, battery is charged with the constant current signal I of different amplitudes again, the voltage at the battery two ends detected before being charged with the constant current signal I of different amplitudes to battery is compared from the voltage at the constant current signal I of the different amplitudes battery two ends for battery detect after charging a period of time, judge whether battery fills with, if underfill, then continue to carry out constant-voltage charge to battery, then the variable quantity of the battery both end voltage detected by comparing and the parameter V of battery itselfref, judge whether battery fills with exactly.The present invention, which is able to ensure that when battery charges every time, can be full of, and effectively improve the electrical property of battery, extend the service life of battery.
Description
Technical field
The present invention relates to the battery in electric automobile, more particularly to a kind of method whether detection battery is full of.
Background technology
Increasingly serious with environmental pollution and energy scarcity problem, electric automobile becomes the heat of auto industry research
Point, and have broad application prospects.Battery and its charging module are used as the important component of electric automobile, its technology water
Flat height has important influence to electric automobile industry.Battery is carried out as the main flow battery of electric automobile to it
During charging, if be not full of, the performance of electric automobile can be reduced, while can also influence the life-span of battery in itself.
Traditional charging process generally comprises constant-current charge, constant-voltage charge and trickle charge.Whether traditional detection battery
The method being full of be according to trickle charge at the end of the voltage at battery two ends judge.Determination methods also are detection electric power storages
The charging current in pond, in constant-voltage charge, when charging current is reduced to some value being considered as battery fills with.These
The testing result of method is all less accurate, it is impossible to ensure that battery is completely filled with.
The content of the invention
The present invention is to overcome deficiency of the prior art, it is proposed that a kind of method whether detection battery is full of.
This method detects whether battery fills with after the trickle charge stage terminates by increasing by one section of charging interval, from
And ensure that battery can be fully charged, improve the performance of battery.
To achieve these goals, the present invention uses following technical scheme：
A kind of to detect the method whether battery is full of, charging process includes constant-current charge, constant-voltage charge and trickle charge,
Characterized in that, after trickle charge terminates, being charged, being used to battery with the constant current signal I of different amplitudes again
The voltage at the battery two ends that the constant current signal I of different amplitudes is detected before being charged to battery and the perseverance with different amplitudes
The voltage at the battery two ends that stream signal I to battery detect after charging a period of time is compared, and judges battery
Whether fill with, if underfill, continue to carry out constant-voltage charge, the battery then detected by comparing to battery
The variable quantity of both end voltage and the parameter V of battery itselfref, judge whether battery fills with exactly.
Specifically include following steps：
(1) at the end of trickle charge, the voltage U at now battery two ends is detected1And record testing result；
(2) charged a battery with a constant current I, constant current I amplitude is Ia+ 3A, wherein IaFor trickle charge
Amplitude；
(3) after charging 15~20 minutes, the voltage U at battery two ends is detected again2And record testing result；
(4) by comparing testing result U twice2And U1, according to the polarization characteristic of battery, whether judge battery
Fill with；
(5) if battery is filled with, charging terminates；If battery also underfill, continuation is U with amplitude2
Constant pressure to battery carry out constant-voltage charge, if U2-U1≥NVref, then show that battery is filled with, complete charge；If
U2-U1＜ NVref, then show that battery is not full of also, then charged, ensured with this for battery under constant voltage mode again
Battery is completely filled with；N is the joint number of battery, VrefFor the variable quantity of voltage after every section battery polarization, provided by Battery Plant
Databook obtain.
Compared with prior art, the invention has the advantages that and effect：
1st, the present invention need not increase extra hardware circuit, and cost is relatively low.
2nd, the present invention is able to ensure that when charger charges for battery and is completely filled with, and improves the electrical property of battery, prolongs
The service life of battery is grown.
3rd, using the change for the method detection battery both end voltage for adding one section of constant-current charge after terminating in trickle charge,
Judge whether battery is completely filled with by being compared with accumulator property parameter, test process and deterministic process are all fairly simple
Fast.
Brief description of the drawings
Fig. 1 is the testing process schematic diagram whether battery of the present invention is full of；
Fig. 2 is specific embodiment of the invention example circuit diagram；
Fig. 3 is the comparison diagram of whole charging curve of the invention and traditional charging curve.
Embodiment
Below in conjunction with the accompanying drawings, embodiments of the present invention are described in detail, it is to be understood that the protection model of the present invention
Enclose and do not limited by embodiment.
The flow for the method whether present invention detection battery is full of is as shown in Figure 1：
(1) at the end of trickle charge, charged a battery with a constant current I, detect the electricity at now battery two ends
Press U1And record testing result；
(2) charging was carried out after a period of time t, and the voltage U at battery two ends is detected again2And record testing result；
(3) by comparing testing result twice, according to the polarization characteristic of battery, it can be determined that whether to go out battery
Through full of.
(4) if battery is filled with, charging terminates；If battery also underfill, continues to enter battery
Row constant-voltage charge.
From the chemical characteristic of battery, after battery is completely filled with, if continuing to charge to it, store
Polarization phenomena can occur for battery, and the voltage at its two ends occurs to change significantly before and after polarization in battery.Define the voltage
Variable quantity is Vref, the value and the relating to parameters of battery in itself are obtained in the databook that can be provided by Battery Plant.
The variable quantity of the battery both end voltage detected by comparing and the parameter V of battery itselfref, can be accurate
Ground judges whether battery fills with.If U2-U1≥NVref, then show that battery is filled with；If U2-U1＜
NVref, then show that battery is not full of also.
Fig. 2 is the example circuit diagram that the present invention is embodied, and the present invention is by taking phase-shifting full-bridge topology as an example, other half-bridges
The present invention is equally applicable to full-bridge topology.The circuit includes power model, output voltage sampling module, output current sampling mould
Block and control module, using prior art circuits.Here is the description to modules：
Power model：The module uses full-bridge phase-shifted topology, and according to the different charging stages, there is provided corresponding constant pressure
Or constant current signal charges to battery.The module is by power tube, high frequency transformer, resonant inductance and output rectification module
Composition.
Output voltage sampling module：The module realized by two divider resistances, both for detecting battery both end voltage
To judge whether battery is full of, it is used for realizing feedback control again.
Output current sampling module：The module is connected on the sampling resistor of output end to realize by one, anti-for realizing
Feedback control.Due to the limitation of power, the value of current sampling resistor is unsuitable excessive, and relatively low signal CPU can not be handled, so electric
Stream sampled signal enters CPU by an amplifier.
Control module：The module is made up of CPU and its corresponding peripheral circuit, for providing drive signal for power tube,
Simultaneously by the processing to sampled signal, the regulation of different charging processes is realized.
The circuit is first according to charging strategy set in advance, successively to battery carry out constant-current charge, constant-voltage charge and
Trickle charge；After trickle charge terminates, the constant current signal for being I with amplitude charges to battery, utilizes output voltage
The voltage at battery two ends, is designated as U when sampling module detection is initial1；After t after a while, battery two ends are detected again
Voltage, be designated as U2；Compare the variable quantity and reference value set in advance of battery both end voltage using CPU, you can judge
Whether battery is full of.If U2-U1≥NVref, then show that battery is filled with, can be with complete charge；If U2-U1＜
NVref, then show that battery is not full of also, by control module circuit can be made to rework and entered in constant voltage mode for battery
Row charging, ensures that battery is completely filled with this.
Such as Fig. 3, in order to verify the correctness of the present invention, according to traditional charging curve (Fig. 3 a) and of the invention fill respectively
Electric curve (Fig. 3 b) is charged to a capacity for 120AH battery, by the testing result charged more twice, finds
106AH electricity has only been charged into according to traditional charging curve battery, and it is then complete according to the charging curve battery of the present invention
It is full of entirely.
Claims (2)
1. a kind of detect the method whether battery is full of, charging process includes constant-current charge, constant-voltage charge and trickle charge, its
It is characterised by, after trickle charge terminates, battery is charged with the constant current signal I of different amplitudes again, will be with not
With amplitude constant current signal I battery is charged before the voltage at battery two ends that detects and the constant current with different amplitudes
The voltage at the battery two ends that signal I to battery detect after charging a period of time is compared, and judges that battery is
It is no to fill with, if underfill, continue to carry out constant-voltage charge, the battery two then detected by comparing to battery
The variable quantity of terminal voltage and the parameter V of battery itselfref, judge whether battery fills with exactly.
2. the method whether detection battery according to claim 1 is full of, comprises the following steps：
(1) at the end of trickle charge, the voltage U at now battery two ends is detected1And record testing result；
(2) charged a battery with a constant current I, constant current I amplitude is Ia+ 3A, wherein IaFor the width of trickle charge
Value；
(3) after charging 15~20 minutes, the voltage U at battery two ends is detected again2And record testing result；
(4) by comparing testing result U twice2And U1, according to the polarization characteristic of battery, judge battery whether
It is full of；
(5) if battery is filled with, charging terminates；If battery also underfill, continuation is U with amplitude2Constant pressure
Constant-voltage charge is carried out to battery, if U2-U1≥NVref, then show that battery is filled with, complete charge；If U2-U1＜
NVref, then show that battery is not full of also, then charged again under constant voltage mode for battery, battery is ensured with this
It is completely filled with；N is the joint number of battery, VrefFor the variable quantity of voltage after every section battery polarization, the data provided by Battery Plant
Handbook is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182728.5A CN104779670B (en) | 2015-04-16 | 2015-04-16 | It is a kind of to detect the method whether battery is full of |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182728.5A CN104779670B (en) | 2015-04-16 | 2015-04-16 | It is a kind of to detect the method whether battery is full of |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104779670A CN104779670A (en) | 2015-07-15 |
| CN104779670B true CN104779670B (en) | 2017-10-10 |
Family
ID=53620968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510182728.5A Active CN104779670B (en) | 2015-04-16 | 2015-04-16 | It is a kind of to detect the method whether battery is full of |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104779670B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085934B (en) * | 2019-05-30 | 2020-09-01 | 维沃移动通信有限公司 | Charging method of terminal battery and mobile terminal |
| CN111769338B (en) * | 2020-07-10 | 2023-06-20 | 陕西航空电气有限责任公司 | Method for charging storage battery by aviation distribution product charger |
| CN112098870A (en) * | 2020-09-15 | 2020-12-18 | 国网辽宁省电力有限公司阜新供电公司 | Online testing method for internal resistance of storage battery of parallel power supply equipment |
| CN114683959A (en) * | 2020-12-31 | 2022-07-01 | 宝能汽车集团有限公司 | Intelligent power supplementing method for storage battery in electric vehicle and intelligent power supplementing system for storage battery in electric vehicle |
| CN113479099A (en) * | 2021-07-07 | 2021-10-08 | 华人运通(江苏)技术有限公司 | Control method and system for power taking and supplementing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356627C (en) * | 2005-09-23 | 2007-12-19 | 周明明 | High voltage time limit charging method |
| JP5393956B2 (en) * | 2007-04-10 | 2014-01-22 | 三洋電機株式会社 | Battery full charge capacity detection method |
| CN101593855B (en) * | 2009-07-02 | 2010-12-01 | 马贵龙 | Lead-acid cell charge method controlled by microcomputer |
| JP2015038444A (en) * | 2013-08-19 | 2015-02-26 | 株式会社東芝 | Secondary battery remaining capacity estimation method and secondary battery remaining capacity estimation apparatus |
| JP6197479B2 (en) * | 2013-08-23 | 2017-09-20 | トヨタ自動車株式会社 | Power storage system and method for estimating full charge capacity of power storage device |
-
2015
- 2015-04-16 CN CN201510182728.5A patent/CN104779670B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104779670A (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104779670B (en) | It is a kind of to detect the method whether battery is full of | |
| CN102782928B (en) | Method for balancing states of charge of a battery having a plurality of battery cells as well as a corresponding battery management system and a battery | |
| CN105510847B (en) | The screening technique of lithium ion battery consistency | |
| CN104614675A (en) | Power battery group consistency detection method and device | |
| CN106300545B (en) | A kind of active equalization control device and control method for liquid metal cell | |
| US20120161709A1 (en) | Secondary-battery control apparatus | |
| CN110749832B (en) | Method for quickly estimating actual capacity of retired lithium ion battery of electric vehicle | |
| CN108896823B (en) | Charging resistor detection method | |
| CN104485474A (en) | Electric vehicle battery pack matching method based on coincidence indicator | |
| CN106646256A (en) | Battery capacity calculating method | |
| CN103364729A (en) | Detection method of battery | |
| CN112035777A (en) | Battery charging remaining time calculation method and device and vehicle | |
| CN103066671A (en) | Uniform charging method and uniform charging device for lithium battery packs | |
| CN109596993A (en) | The method of charge states of lithium ion battery detection | |
| CN104297692A (en) | Method for detecting service life of battery | |
| CN107677964A (en) | A kind of New energy automobile motor battery simulating test device and method | |
| CN103151815B (en) | Method for controlling equalizing charge of elementary cell of battery pack | |
| CN107478908A (en) | A kind of electric car insulation detection device and its detection method | |
| CN104122884A (en) | Simulation test device of battery management system | |
| JP6694463B2 (en) | Lithium-ion battery charging method to correct / compensate voltage | |
| CN108090244B (en) | Parallel lithium ion battery system modeling method | |
| CN107733000A (en) | Charging method and charger | |
| CN106505846A (en) | A kind of soft starting circuit and soft-start method and direct-current charging post | |
| CN104035039A (en) | Device and method for rapidly estimating storage battery capacity | |
| CN102130368B (en) | Preheating charging method of valve-controlled type lead-acid storage battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |