CN102683763B - Charging method - Google Patents
Charging method Download PDFInfo
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- CN102683763B CN102683763B CN201210141794.4A CN201210141794A CN102683763B CN 102683763 B CN102683763 B CN 102683763B CN 201210141794 A CN201210141794 A CN 201210141794A CN 102683763 B CN102683763 B CN 102683763B
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- Prior art keywords
- voltage
- battery
- charging
- gear
- circuit
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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)
Abstract
The invention relates to a charging method. The charging method comprises the following steps: firstly, pre-charging a battery, wherein the pre-charging time is t; then detecting the voltage of the battery; and finally selecting the voltage gear which most approaches to the detected voltage value, outputting the charging voltage of the corresponding gear, and charging the battery. According to the invention, the problems in the prior art that the battery voltage is recognized inaccurately and overcharging is easily caused can be solved.
Description
Technical field
The present invention relates to a kind of charging method of Quick charging station for electric vehicle.
Background technology
Electric motor car at present is more and more, but not supplying electricity to people brings very burden on the way, the quick charge for going out therewith
Station solves the problems, such as that electric motor car does not have the emergent charging of electricity on the way, is characterized in quick charge, charging 10-20 minute wheeled 5-10
Kilometer.Due to battery size difference：48V batteries, 60V batteries, 72V batteries, can be charged using a voltage, but necessary
Limit the charging interval.Or using identification cell voltage, the mode being charged with corresponding voltage, but battery power shortage degree it is high or
Jing long-times are used, and battery parameter can great changes will take place, it is easy to cause to recognize inaccurate situation, if without reliable protection
Measure, such battery still occur because of identification mistake and the problem of battery overcharge.
The content of the invention
It is an object of the invention to provide for a kind of charging method of electric vehicle quick charge, to solve prior art knowledge
Other cell voltage is inaccurate, easily causes the problem for overcharging.
For achieving the above object, the solution of the present invention is：A kind of charging method, first, enters line precharge, preliminary filling to battery
The electric time is t；It is then detected that cell voltage；Finally, the voltage gear closest to above-mentioned detection voltage value is selected, output is corresponding
The charging voltage of gear, is charged to battery.
Described is 10-20s with the charging interval.
The voltage of present invention detection battery to be charged, then selects output charging voltage gear, makes the charging voltage of output
Meet the be close to charging voltage gear of the detected value.In order to improve the accuracy of detection, before detection cell voltage, first
Battery is entered the line precharge a bit of time, cell voltage can return to normal condition substantially, reduce battery electricity to greatest extent
Pressure differentiates error.Such as very high battery of power shortage degree, is pre-charged a bit of time, and battery floating voltage can be returned to and is just close to
Ordinary water is put down, and the very low battery of power shortage degree, it is pre-charged a bit of time (as pre-charging time is shorter), the change of cell voltage
Very little, remains in normal level.In order to improve efficiency, increase the degree of accuracy, precharge time can not be long, can not be too short.
Jing repetition tests, are typically chosen as 10-20s most preferably, such as 15s.
Description of the drawings
Fig. 1 is 1 circuit block diagram of embodiments of the invention；
Fig. 2 is the circuit block diagram of embodiment 2；
Fig. 3 is polarity identification circuit schematic diagram；
Fig. 4 is voltage regulation unit importation circuit theory diagrams.
Specific embodiment
The present invention will be further described in detail below in conjunction with the accompanying drawings.
The charging method of the present invention：
First, enter line precharge to battery, precharge time is t；
It is then detected that cell voltage；
Finally, the voltage gear closest to above-mentioned detection voltage value is selected, the charging voltage of corresponding gear is exported, to battery
It is charged.
Precharge time, t was generally 5-20s.The gear that such as charges is divided into 48V, 60V, 72V, detects magnitude of voltage after precharge
For 56V, then from the voltage gear of 60V, the charging voltage for exporting 60V is charged for battery.
Following present several physical circuits for being suitable for the inventive method.
Embodiment 1
Such as Fig. 1, a kind of electric motor intelligent quick charge station, including main circuit and control circuit, the main circuit is wrapped successively
Include：For connecting the AC rectification filter circuit and high frequency switching converter unit of AC power；Control circuit include single-chip microcomputer and
Coin-freed arrangement, single-chip microcomputer input sample connect a voltage detecting circuit for being used for gathering cell voltage, and single-chip microcomputer input is connected with
For arranging the manual voltage-regulation button of charging voltage gear, single-chip microcomputer output control connects a voltage regulation unit, should
The switching tube of the output driving control connection high frequency switching converter unit of voltage regulation unit.
High frequency switching converter unit adopts the controllable direct current mode of direct current high-frequency ac, voltage regulation unit to pass through
The dutycycle of control HF switch pipe, adjusts charging voltage.Cell voltage is obtained by voltage detecting circuit sampling, according to detection
It is worth the gear that manual voltage-regulation button selects output voltage, such as 36V, 60V, 72V, Single-chip Controlling voltage regulation unit, electricity
Dutycycle of the pressure adjustment unit by control high frequency switching converter unit switch pipe, controls the output of high frequency switching converter unit,
Export the voltage of corresponding gear.The mode of Single-chip Controlling voltage regulation unit is more, and embodiment 2 gives a kind of concrete side
Formula.
Embodiment 2
On the basis of embodiment 1, cause to overcharge in order to avoid inferring appearance mistake during battery rated voltage, also set up
The protection circuit of closing high frequency switching converter unit, makes protection act when electric current is excessive.Such as Fig. 2, voltage detection unit are replaced
Voltage and current detection circuit is changed to, it is excessive when charging current is detected（Or other factors, such as temperature etc.）When, by protection circuit
The driving of cut-out high frequency switching converter unit, so that stop charging.If infer battery rated voltage mistake, hand can be passed through
Dynamic voltage-regulation button selects suitable charging gear, is charged.
In the present embodiment, the input adjustment circuit between single-chip microcomputer and voltage regulation unit is as shown in figure 4, voltage-regulation list
The input of unit is connected on the series connection point A of a resistant series branch road；One group of output port of single-chip microcomputer connects one group respectively
The former limit of optocoupler, the secondary resistance corresponding with one of each optocoupler（R1、R2、R3）After series connection with the resistant series branch road on
Series resistance R it is in parallel.Output of the single-chip microcomputer by controlled output port, makes corresponding optocoupler conducting, so that correspondence
Resistance（R1、R2、R3）It is respectively incorporated in the resistant series branch road, makes the corresponding input of series connection point i.e. voltage-regulation
Current potential change.mage8（Single-chip microcomputer type）The photoelectrical coupler of the corresponding corresponding gear of control, changes high frequency switching converter control
First pin of coremaking piece KA3525（Fig. 4 A points）Voltage makes output voltage reach corresponding value.
In the present embodiment, a polarity switching is also add, its two input connects high frequency switching converter list respectively
The positive pole and negative pole of unit's output, two output end are used for connecting the positive pole and negative pole of battery respectively.Its input anode passes through
The SPDT contact of the first relay K1 connects the positive pole and negative pole of its output end respectively, and its input cathode passes through second
The SPDT contact of relay K2 connects the positive pole and negative pole of its output end respectively；Pole is equipped between two output end
Property judging circuit, polarity discriminating circuit include two optocouplers U1, U2, the former limit of two optocouplers（And an electric capacity）Instead
To being connected in parallel between the output end of the battery polar change-over circuit, secondary controls to connect two triodes Q1, Q2 respectively, and two or three
Pole pipe Q1, Q2 is gone here and there respectively and is located in the control coil loop of the first relay K1 and the second relay K2.
Such as Fig. 3, if it be as shown above upper just lower negative that battery is accessed, optocoupler U2 lights, and Q1 drives relay K1 to make
Normally opened contact is closed, and completes dipole inversion with the deep closed contact of K2.If instead battery is accessed as under upper bearing, just, then optocoupler U1 sends out
Light, Q2 drive relay K2 closures to complete dipole inversion with K1 normally-closed contacts.
Claims (1)
1. a kind of charging method, it is characterised in that first, enter line precharge to battery, precharge time is t；It is then detected that electric
Cell voltage；Finally, the voltage gear closest to above-mentioned detection voltage value is selected, makes the charging voltage of output meet the detected value institute
Close charging voltage gear, exports the charging voltage of corresponding gear, battery is charged；The precharge time t's takes
Value scope is 15-20s；The battery is electric vehicle battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141794.4A CN102683763B (en) | 2012-05-09 | 2012-05-09 | Charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141794.4A CN102683763B (en) | 2012-05-09 | 2012-05-09 | Charging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102683763A CN102683763A (en) | 2012-09-19 |
| CN102683763B true CN102683763B (en) | 2017-03-22 |
Family
ID=46815368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210141794.4A Expired - Fee Related CN102683763B (en) | 2012-05-09 | 2012-05-09 | Charging method |
Country Status (1)
| Country | Link |
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| CN (1) | CN102683763B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108574323B (en) * | 2018-03-23 | 2021-03-19 | 加码技术有限公司 | Battery charging control circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241042A (en) * | 1998-05-27 | 2000-01-12 | 松下电器产业株式会社 | Accumulator charging method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100578889C (en) * | 2007-07-25 | 2010-01-06 | 中兴通讯股份有限公司 | Method for charging battery of portable handheld device |
| KR101042768B1 (en) * | 2008-06-03 | 2011-06-20 | 삼성에스디아이 주식회사 | Battery pack and method of charge thereof |
| CN101599651B (en) * | 2009-06-30 | 2011-12-14 | 聊城大学 | General rapid intelligent charger and charging method thereof |
| CN201608544U (en) * | 2009-11-19 | 2010-10-13 | 杭州竞天数码科技有限公司 | Lithium battery charger |
-
2012
- 2012-05-09 CN CN201210141794.4A patent/CN102683763B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241042A (en) * | 1998-05-27 | 2000-01-12 | 松下电器产业株式会社 | Accumulator charging method |
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| CN102683763A (en) | 2012-09-19 |
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Granted publication date: 20170322 |