CN207459754U - A kind of charging management system of lithium battery - Google Patents
A kind of charging management system of lithium battery Download PDFInfo
- Publication number
- CN207459754U CN207459754U CN201720989512.4U CN201720989512U CN207459754U CN 207459754 U CN207459754 U CN 207459754U CN 201720989512 U CN201720989512 U CN 201720989512U CN 207459754 U CN207459754 U CN 207459754U
- Authority
- CN
- China
- Prior art keywords
- circuit
- charging
- battery
- voltage
- charge switch
- 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
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of charging management systems of lithium battery,Including constant pressure and flow circuit,Voltage detecting circuit,Current detection circuit,Charge switch circuit,Condition indication circuit and MCU control circuit,The MCU control circuit connects constant pressure and flow circuit respectively,Voltage detecting circuit,Current detection circuit,Charge switch circuit and condition indication circuit,Constant pressure and flow circuit is also connected with charge switch circuit,Charge switch circuit connects battery by charging interface,Charging interface is also respectively connected with voltage detecting circuit and current detection circuit,The utility model carries out difference management for the battery behavior of different charging sections,The voltage of battery in charging process is monitored simultaneously,Electric current,Volume change state,There is sharper detecting ability to the abnormality that corresponding charging section is likely to occur,It is more careful to the processing of different abnormalities,Drastically increase the reliability and security of charging process.
Description
Technical field
The utility model is related to a kind of charging techniques, are specifically a kind of charging management system of lithium battery.
Background technology
Lithium battery is secondary cell common at present, more sensitive to charging environment since its chemical characteristic is very active,
Nonstandard charging behavior, it would be possible to damage lithium battery or even trigger peril.To lithium battery charging be we live in
Locate visible daily behavior, thus it is safe and reliable, it appears it is particularly important.
Traditional lithium battery charger has only done simple constant current constant voltage processing, each link of charging process has not been done
More careful processing can not be accomplished to handle in real time to the abnormality in charging process, thus its security reliability is poor.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of charging management system of lithium battery, to solve background skill
The problem of being mentioned in art.
To achieve the above object, the utility model provides following technical solution：
A kind of charging management system of lithium battery, including constant pressure and flow circuit, voltage detecting circuit, current detection circuit,
Charge switch circuit, condition indication circuit and MCU control circuit, the MCU control circuit connect constant pressure and flow circuit, electricity respectively
Pressure detection circuit, current detection circuit, charge switch circuit and condition indication circuit, constant pressure and flow circuit are also connected with charge switch
Circuit, charge switch circuit connect battery by charging interface, and charging interface is also respectively connected with voltage detecting circuit and electric current inspection
Slowdown monitoring circuit.
Further scheme as the utility model：The battery is lithium battery.
Compared with prior art, the beneficial effects of the utility model are：The utility model is directed to the battery of different charging sections
Characteristic carries out difference management, while monitors the voltage of battery in charging process, electric current, volume change state, to corresponding charging section
The abnormality being likely to occur has sharper detecting ability, more careful to the processing of different abnormalities, greatly carries
The high reliability and security of charging process.
Description of the drawings
Fig. 1 is the corresponding charging process voltage of this charging management system, electric current, the real-time curve of electricity.
Fig. 2 is the corresponding hardware circuit framework relational graph of this charging management system.
Fig. 3 is the application example charging flow figure of this charging management system.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, a kind of charging management system of lithium battery, including constant pressure and flow circuit：Energy supply part, is pressed
According to 6. signal that micro-control circuit is sent, output voltage and electric current are set.Voltage detecting circuit：Voltage letter is 6. provided for micro-control circuit
Number feedback, to monitor charging output voltage and cell voltage.Current detection circuit：It is anti-that current signal is 6. provided for micro-control circuit
Feedback, to monitor output current of charger.Charge switch circuit：The on and off of charge circuit is controlled, charged with control and is ended.Shape
State indicating circuit：According to 6. indication signal that micro-control circuit is sent, show the working condition of charger, feed back charger and battery
Abnormality and alarm.Micro-control circuit：The feedback signal of each several part circuit 1. 2. 3. 4. 5. is handled, is controlled to each circuit output
Signal monitors the shape of each several part circuit, controls charging flow.
The operation principle of the utility model is：Charging process Discrete control, the voltage and current shape in charging process
State is divided into 5 sections (but being not limited to 5 sections), (see Fig. 1)：Preliminary filling section 1 (t1), preliminary filling section 2 (t2), constant current section (t3), constant pressure section
(t4), section (t5) is ended.
A. preliminary filling section：Optionally charging section in charging process, when battery is crossed and put, to carry out restorative charging.Electricity
When cell voltage is relatively low, the absorbent electric current very little (being determined by battery core chemical characteristic) of battery institute, charger must be with corresponding small
Electric current charges for it；1 segmentation preliminary filling (only t1) or 2 segmentation preliminary fillings may be selected (t1 adds t2).
B. constant current section：Main charging section in charging process.Charger is exported with constant current mode, and electric current is necessarily less than battery
The maximum current value that can bear.When the electric current that battery is absorbed is less than the output-current rating of charger, constant current section terminates.
C. constant pressure section：Ending charging section in charging process.Battery is almost full of, and the absorbent electric current of battery institute gradually subtracts
Small, cell voltage variation is seldom, approximately constant.Charger is exported with constant voltage mode, when electric current drops to the cut-off current of setting
During point, charging process terminates.
D. section is ended：After charging process, to the control section of charger.After charging complete, charger disconnects and battery
Charge circuit connection, and continue monitor cell voltage.
Graded time step limits the output electricity of charger.
A. for the battery of same specification, under identical environment, capacity (the absorbent electricity of battery in each voltage section
Amount) it is approximately constant, therefore can calculate under normal circumstances, the maximum charge time needed for corresponding charging section.
B. when with electric current charges the battery needed for battery when, within the set charging time, if cell voltage fails to reach
To assigned voltage standard, then show battery exception；It can not continue to charge the battery, in order to avoid damage battery and charger.
The charging time of each charging section is mutual indepedent, to reach the segmented protection to each charging section.
Charging flow describes：
A. under holding state, voltage detecting circuit can monitor the voltage change of charging interface in real time.When battery connects charging
After device, with the voltage status of battery respective change will occur for charging interface voltage；6. micro-control circuit passes through voltage detecting circuit
2. the voltage status of the voltage change situation judging battery fed back.
B. if the voltage status of battery meets charge condition, micro-control circuit 6. first will according to cell voltage state, if
Determine constant pressure and flow circuit and 1. export corresponding voltage and current；Then 6. micro-control circuit will send switched charge signal, open charging
4. charge circuit is opened on powered-down road, charge the battery.
C. following micro-control circuit 6. will according to voltage detecting circuit 2. with current detection circuit 3., the current charging of feedback
Voltage and current signal in circuit judges present charge state, and corresponding indication signal, state is 5. sent to condition indication circuit
Indicating circuit is according to indication signal corresponding states.
D. in charging process, 6. micro-control circuit will judge charged state according to the feedback signal of each circuit, set each circuit
Correspondence parameter.
Abnormality processing：
A. short-circuit protection：When 2. voltage detecting circuit detects that charging interface is in short-circuit condition, charge switch circuit
4. can be held off, 5. condition indication circuit shows short-circuit abnormal；To ensure that charger will not be damaged.
B. under-voltage protection：When 2. voltage detecting circuit detects cell voltage less than its minimum chargeable pressure point (rise and fill a little)
When, 4. charge switch circuit can be held off, 5. condition indication circuit shows battery undervoltage exception；To ensure that battery will not be subject to
Damage.
C. overvoltage protection：When 2. voltage detecting circuit detects that charging voltage is more than the chargeable pressure of the permitted highest of battery
During point, 4. charge switch circuit can be held off, forbid charging the battery；5. condition indication circuit shows over-pressed abnormal；To protect
Barrier battery will not be damaged.
D. overcurrent protection：When 3. current detection circuit detects that charging current is more than the permitted maximum charging current of battery
When, 4. charge switch circuit can be held off, stop charging the battery；5. condition indication circuit showed throat floater；To ensure
Battery will not be damaged.
Overtime protection：When regulation the charging time in, when cell voltage fails the minimum voltage point for reaching defined, it will quilt
It is determined as overtime exception, 4. charge switch circuit can be held off, stop charging the battery；5. condition indication circuit shows time-out
It is abnormal；To ensure that charger and battery will not be damaged.
As a kind of embodiment of the present invention, as shown in figure 3, battery specifications 36V 10AH used in example, highest charges electric
Press 42V, maximum charging current 2A.
A. preliminary filling section 1：As 17V ＜ cell voltage ＜ 25V, charger constant current output 100mA, if battery electricity after 30 minutes
Pressure is still below 25V, then it is assumed that preliminary filling section 1 charges time-out, turns off charge circuit, and display is abnormal.
B. preliminary filling section 2：As 25V ＜ cell voltage ＜ 30V, charger constant current output 350mA, if 1 it is small when after battery electricity
Pressure is still below 30V, then it is assumed that preliminary filling section 2 charges time-out, turns off charge circuit, and display is abnormal.
C. constant current section：As cell voltage ＞ 30V, charger constant current output 2A, if 6 it is small when after charging current do not drop yet
Down to below 2A, then it is assumed that constant current section charging time-out turns off charge circuit, and display is abnormal.
D. constant pressure section：When charger is exported with 42V 2A, after charging current is less than 2A, into constant pressure section, electric current gradually drops
It is low；If 2 it is small when after, charging current is still greater than 200mA, then it is assumed that constant pressure section charge time-out, turn off charge circuit, display charge
Terminate, be equivalent to and be full of.
E. short-circuit protection：When detecting charging interface voltage ＜ 3V, it is believed that charging interface short circuit, charge circuit keep closing
It is disconnected, show that short circuit is abnormal.
F. under-voltage protection：When detecting cell voltage ＜ 17V, it is believed that battery undervoltage is not suitable for charging, and charge circuit is protected
Shut-off is held, shows under-voltage exception.
G. overvoltage protection：The necessary ＜ 42V of cell voltage in entire charging process, otherwise it is assumed that battery is over-pressed, shut-off is charged
Circuit shows that overvoltage is abnormal.
H. overcurrent protection：The necessary ＜ 2A of charging current in entire charging process, otherwise it is assumed that charging overcurrent, shut-off is charged back
Road showed throat floater.
I. under normal condition, when charging process occurs any abnormal：During in preliminary filling section 1, cell voltage will in 30 minutes
More than 25V；Into preliminary filling section 2, then interior cell voltage will be greater than 30V when 1 is small；Into constant current section, the then interior charging when 6 is small
Electric current will drop to below 2A；Into constant pressure section, finally when 2 is small, interior charging current is down to below 200mA, and battery is full of, and charges
Circuit turns off, and charging terminates；Into cut-off section, charge circuit is held off.
Condition indication circuit：Charging instruction state is shown with red and green color LED light.Holding state dodges green light, charged state
Perseverance sends out a warning (preliminary filling section 1, preliminary filling section 2, constant current section, constant pressure section), and full state perseverance gives a green light (cut-off section), and charged state is abnormal
Dodge red light.
Claims (1)
1. a kind of charging management system of lithium battery, including constant pressure and flow circuit, voltage detecting circuit, current detection circuit, fill
Electric switch circuit, condition indication circuit and MCU control circuit, which is characterized in that the MCU control circuit connects constant pressure and constant respectively
Current circuit, voltage detecting circuit, current detection circuit, charge switch circuit and condition indication circuit, constant pressure and flow circuit also connect
Charge switch circuit is connect, charge switch circuit connects battery by charging interface, and charging interface is also respectively connected with voltage detecting electricity
Road and current detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720989512.4U CN207459754U (en) | 2017-08-09 | 2017-08-09 | A kind of charging management system of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720989512.4U CN207459754U (en) | 2017-08-09 | 2017-08-09 | A kind of charging management system of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207459754U true CN207459754U (en) | 2018-06-05 |
Family
ID=62249030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720989512.4U Active CN207459754U (en) | 2017-08-09 | 2017-08-09 | A kind of charging management system of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207459754U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474402A (en) * | 2019-09-18 | 2019-11-19 | 展讯通信（深圳）有限公司 | Charge current foldback circuit and method |
| CN111374591A (en) * | 2018-12-29 | 2020-07-07 | 惠州市蓝微电子有限公司 | Control system and method of dust collector |
-
2017
- 2017-08-09 CN CN201720989512.4U patent/CN207459754U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111374591A (en) * | 2018-12-29 | 2020-07-07 | 惠州市蓝微电子有限公司 | Control system and method of dust collector |
| CN110474402A (en) * | 2019-09-18 | 2019-11-19 | 展讯通信（深圳）有限公司 | Charge current foldback circuit and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205029381U (en) | Digit BMS protection shield with secondary protect function | |
| CN106505694B (en) | A kind of management system and control method of intelligent battery group | |
| CN203466383U (en) | Intelligent static safe energy-saving multifunctional socket with zero power consumption | |
| CN204012789U (en) | Vehicle-mounted monitoring platform power administration module | |
| CN203398771U (en) | Over-current and over-voltage protection circuit for electronic cigarette | |
| CN103078384B (en) | A kind of uninterrupted power supply | |
| CN108199449A (en) | Lithium battery group management of charging and discharging system | |
| CN104425997A (en) | Intelligent static safe energy-saving multifunctional socket with zero power consumption | |
| CN106532679A (en) | Method for judging reliable connection of storage battery pack and DC bus | |
| CN103701162A (en) | Battery management system | |
| CN207459754U (en) | A kind of charging management system of lithium battery | |
| CN104924910A (en) | High-voltage distribution board circuit | |
| CN209675960U (en) | A kind of preliminary filling protective device | |
| CN204131151U (en) | A kind of storage battery automatic on-line electric discharge device | |
| CN206820086U (en) | A kind of accumulator on-line maintenance control circuit and system | |
| CN105262171A (en) | Battery charging protection control system and method | |
| CN205407350U (en) | Lithium ion battery electric power and for communication DC power supply system | |
| CN209001614U (en) | A kind of charging control circuit of charger | |
| CN102647013A (en) | Charge control and protection method for storage battery | |
| CN107390131B (en) | Integrated monitoring system for storage battery of transformer substation | |
| CN203135566U (en) | Ups | |
| TWM519347U (en) | Large-capacity energy-storage power supply system capable of replacing battery module at site and comprising buffer battery and battery set | |
| CN208062822U (en) | Lithium battery group management of charging and discharging system | |
| CN205509480U (en) | Lithium cell protecting device | |
| CN206894282U (en) | Charging gun electric energy protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |