CN108206556A - BMS charging systems and its charging method - Google Patents
BMS charging systems and its charging method Download PDFInfo
- Publication number
- CN108206556A CN108206556A CN201611168124.6A CN201611168124A CN108206556A CN 108206556 A CN108206556 A CN 108206556A CN 201611168124 A CN201611168124 A CN 201611168124A CN 108206556 A CN108206556 A CN 108206556A
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- CN
- China
- Prior art keywords
- circuit
- mcu
- charging
- battery
- bms
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to power battery processing technique fields, disclose a kind of BMS charging systems, including MCU, charger detection circuit, MCU interruption wake-up circuit, charging work circuit and current sampling circuit, the charger detection circuit includes isolation conduction module, the charging detecting circuit and charging work circuit are connected to MCU, the current sampling circuit connects the charging work circuit and MCU, when the charger detection circuit detects charged state, MCU is waken up by MCU interruption wake-up circuit, the MCU drivings charging work circuit charges the battery, the current sampling circuit samples charging current, after charging complete, the MCU enters suspend mode.The invention also discloses charging methods.Turning circuit is isolated to wake up charging metal-oxide-semiconductor by photoelectric coupling detection circuit etc. in the present invention, reduces the unnecessary turn-on time of metal-oxide-semiconductor, so as to extend the time of battery storage, improves the service life of battery.
Description
Technical field
The present invention relates to power battery processing technique field, more particularly to a kind of BMS charging systems and its charging method.
Background technology
Battery management system (BMS) is the tie between battery and user, and main object is secondary cell.Secondary cell is deposited
In some following shortcomings, as storage energy is few, connection in series-parallel is difficult using dispersed problem, safety in utilization, battery capacity estimation
Deng.The performance of battery is very complicated, and different types of battery behavior also differs greatly.BMS is mainly by monitoring the shape of battery
State improves the utilization rate of battery, prevents battery from excessive charge and discharge occur, extends the service life of battery.Due to the presence of BMS,
Battery inevitably generates power consumption, and battery over-discharge can be caused for a long time by standing.
Existing technology is mainly by detecting charger both end voltage, by heat dissipating method or using more preferably device
Method come realize be charged and discharged isolation accomplish low-power consumption.It is to take stopgap measures without effecting a permanent cure in fact, without most basic energy waste
There is no solve for problem.
It is to detect charger both end voltage signal wake-up MUC by electric resistance partial pressure in suspend mode to beat that existing charging, which wakes up detection,
Charging metal-oxide-semiconductor is opened, low-power consumption is reached by diode-isolated electric discharge.Power consumption is big during the electric discharge of diode-isolated, temperature is high, charging
When electric current is very big, need and it is multiple could solve heat dissipation problem, the too big diode-isolated of electric current is with regard to unworkable.Or during suspend mode
It can be intermittent to open charging MOS by detecting charging current.Prolonged intermittence MOS can consume the electricity of battery,
It even can cause to put, damage battery.
Invention content
In order to solve the above-mentioned technical problem the present invention, provides a kind of BMS charging systems and its charging method, led by isolation
Circuit passband wakes up charging metal-oxide-semiconductor, reduces the unnecessary turn-on time of metal-oxide-semiconductor, so as to extend the time of battery storage, improves
The service life of battery.
To achieve these goals, the present invention provides following technical scheme：
A kind of BMS charging systems, it is characterized in that, including MCU, charger detection circuit, MCU interruption wake-up circuit, charging
Operating circuit and current sampling circuit, the charger detection circuit include isolation conduction module, and the charging detecting circuit connects
MCU is connected to, the charging work circuit is connected to MCU, and the current sampling circuit connects the charging work circuit and MCU,
When the charger detection circuit detects charged state, MCU, the MCU drivings charging are waken up by MCU interruption wake-up circuit
Operating circuit charges the battery, and the current sampling circuit samples charging current, and after charging complete, the MCU enters
Suspend mode.
Further, the isolation conduction module of the charger detection circuit is photoelectric coupling circuit, the photoelectric coupling electricity
Road photoelectricity end connection charger side, receiving terminal are connected to MCU interruption wake-up circuit.
Further, the isolation conduction module of the charger detection circuit is relay circuit, the relay circuit
Induction end connection charge power supply side, driving end are connected to MCU interruption wake-up circuit.
Further, the charging work circuit is MOS circuits.
A kind of method that BMS charging systems as described above charge, it is characterized in that, include the following steps：
(1) charger accesses；
(2) isolation turning circuit work；
(3) MCU interruption wake-up circuit wakes up MCU；
(4) MCU controls charging work circuit to charge the battery；
(5) sample circuit is sampled into charging current；
(6) judged according to sample circuit, after charging complete, MCU enters suspend mode.
Further, the turning circuit of being isolated is photoelectric coupling circuit, and in the 2nd step, the photoelectric coupling circuit is led
Logical, interrupt signal is sent to the interruption detection pin of MCU.
Further, the turning circuit of being isolated is relay circuit, in the 2nd step, the relay circuit conducting, in
Break signal is sent to the interruption detection pin of MCU.
The beneficial effects of the invention are as follows：
Turning circuit is isolated to wake up charging metal-oxide-semiconductor by photoelectric coupling detection circuit etc., it is unnecessary to reduce metal-oxide-semiconductor
Turn-on time so as to extend the time of battery storage, improves the service life of battery, separately avoids unnecessary energy wave
Take, the final effect for realizing energy-saving and emission-reduction.
Description of the drawings
Attached drawing 1 is the structure diagram of the present invention；
Attached drawing 2 is photoelectric coupling circuit figure；
Attached drawing 3 is relay circuit figure；
Attached drawing 4 is MCU circuit diagrams；
Attached drawing 5 is charging method flow diagram.
Specific embodiment
It elaborates below to the specific embodiment of BMS charging systems of the present invention and its charging method.
Referring to attached drawing 1, the frame diagram of principle includes following sections circuit：Charger detection circuit, MCU interruption wake up electricity
Road, charge MOS operating circuits, current sampling circuit.Wake-up circuit is wherein interrupted, current sample is to judge to identify by MCU.
The charger detection circuit includes isolation conduction module, and the charging detecting circuit is connected to MCU, the charging work circuit
MCU is connected to, the current sampling circuit connects the charging work circuit and MCU, the charger detection circuit detect
During charged state, MCU is waken up by MCU interruption wake-up circuit, the MCU drivings charging work circuit charges the battery,
The current sampling circuit samples charging current, and after charging complete, the MCU enters suspend mode.
Referring to attached drawing 2, before charger is not connect, the voltage at D and the S both ends of charging metal-oxide-semiconductor Q4 is 0V, inside U2
Photodiode does not have pressure drop to be not turned on, and signal CHG is high level 3.3V.
Charger is plugged, since Q4 is to disconnect, charging paths are not formed into a loop, and voltage acts against D, S two of Q4
Above end and resistance R23 and optocoupler U2 internal photos.D, S both end voltage Vds=Vchg (voltage of charger) of Q4-
Vbat (cell voltage).The conduction voltage drop Vf=1.2V of optocoupler internal photo, conducting electric current If=1mA will so make light
Coupling U2 being capable of turn-on condition：Vds=If*R23+Vf=2.2V, that is to say, that the voltage Vchg of charger is than the voltage of battery
Vbat is higher by 2.2V (threshold values that conducting voltage can be reduced by regulation resistance R23).Work as Vds>During=2.2V, optocoupler U2 is led
Logical, detection signal CHG is pulled low, and has interrupt signal to enter MCU.
Referring to attached drawing 4,1 foot of MCU detections detects interrupt signal, wakes up MCU.MCU is passed through by being waken up in dormant state
14 human hair combing wastes go out high level drive signal CHG_DRV, and by charging metal-oxide-semiconductor Q4 conductings, BMS enters charged state.In charging process,
By the electric current Ifb of the 14 foot detection stream over-sampling resistance R10 of MCU, when the Ifb of R10 is less than 50mA, MCU enters suspend mode mould
Formula.
Referring to attached drawing 3, photoelectric coupling circuit can be substituted by relay circuit, generate phase same-action.Relay driving
High-voltage signal is sent to MCU by switch, is waken up MCU and is charged the battery.
Referring to attached drawing 5, the method specifically to charge is as follows：
(1) charger accesses；
(2) isolation turning circuit work；
(3) MCU interruption wake-up circuit wakes up MCU；
(4) MCU controls charging work circuit to charge the battery；
(5) sample circuit is sampled into charging current；
(6) judged according to sample circuit, after charging complete, MCU enters suspend mode.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (7)
1. a kind of BMS charging systems, it is characterised in that：Including MCU, charger detection circuit, MCU interruption wake-up circuit, charging
Operating circuit and current sampling circuit, the charger detection circuit include isolation conduction module, and the charging detecting circuit connects
MCU is connected to, the charging work circuit is connected to MCU, and the current sampling circuit connects the charging work circuit and MCU,
When the charger detection circuit detects charged state, MCU, the MCU drivings charging are waken up by MCU interruption wake-up circuit
Operating circuit charges the battery, and the current sampling circuit samples charging current, and after charging complete, the MCU enters
Suspend mode.
2. BMS charging systems according to claim 1, it is characterised in that：The isolation conducting of the charger detection circuit
Module is photoelectric coupling circuit, and the photoelectric coupling circuit photoelectricity end connection charger side, receiving terminal is connected to MCU interruption wake-up
Circuit.
3. BMS charging systems according to claim 1, it is characterised in that：The isolation conducting of the charger detection circuit
Module is relay circuit, and the induction end connection charge power supply side of the relay circuit, driving end is connected to MCU interruption wake-up
Circuit.
4. BMS charging systems according to any one of claim 1 to 3, it is characterised in that：The charging work circuit is
MOS circuits.
5. a kind of method that charging systems of BMS according to any one of claims 1 to 4 charge, it is characterised in that：Packet
Include following steps：
(1) charger accesses；
(2) isolation turning circuit work；
(3) MCU interruption wake-up circuit wakes up MCU；
(4) MCU controls charging work circuit to charge the battery；
(5) sample circuit is sampled into charging current；
(6) judged according to sample circuit, after charging complete, MCU enters suspend mode.
6. charging method according to claim 5, it is characterised in that：The isolation turning circuit is photoelectric coupling circuit,
In 2nd step, the photoelectric coupling circuit conducting, interrupt signal is sent to the interruption detection pin of MCU.
7. charging method according to claim 5, it is characterised in that：The turning circuit of being isolated is relay circuit, institute
It states in the 2nd step, the relay circuit conducting, interrupt signal is sent to the interruption detection pin of MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611168124.6A CN108206556A (en) | 2016-12-16 | 2016-12-16 | BMS charging systems and its charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611168124.6A CN108206556A (en) | 2016-12-16 | 2016-12-16 | BMS charging systems and its charging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108206556A true CN108206556A (en) | 2018-06-26 |
Family
ID=62602322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611168124.6A Pending CN108206556A (en) | 2016-12-16 | 2016-12-16 | BMS charging systems and its charging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108206556A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867910A (en) * | 2018-08-27 | 2020-03-06 | 添可智能科技有限公司 | Charge-discharge activation circuit |
| CN112816888A (en) * | 2019-11-18 | 2021-05-18 | 海能达通信股份有限公司 | Terminal awakening method, detection circuit and terminal |
| WO2021138901A1 (en) * | 2020-01-10 | 2021-07-15 | 深圳市大疆创新科技有限公司 | Activation circuit, smart battery, unmanned aerial vehicle and electronic device |
-
2016
- 2016-12-16 CN CN201611168124.6A patent/CN108206556A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867910A (en) * | 2018-08-27 | 2020-03-06 | 添可智能科技有限公司 | Charge-discharge activation circuit |
| CN110867910B (en) * | 2018-08-27 | 2023-10-20 | 添可智能科技有限公司 | Charge-discharge activation circuit |
| CN112816888A (en) * | 2019-11-18 | 2021-05-18 | 海能达通信股份有限公司 | Terminal awakening method, detection circuit and terminal |
| CN112816888B (en) * | 2019-11-18 | 2024-05-10 | 海能达通信股份有限公司 | Terminal awakening method, detection circuit and terminal |
| WO2021138901A1 (en) * | 2020-01-10 | 2021-07-15 | 深圳市大疆创新科技有限公司 | Activation circuit, smart battery, unmanned aerial vehicle and electronic device |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180626 |
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| WD01 | Invention patent application deemed withdrawn after publication |