CN108923488A - battery charging management system - Google Patents
battery charging management system Download PDFInfo
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- CN108923488A CN108923488A CN201810811515.8A CN201810811515A CN108923488A CN 108923488 A CN108923488 A CN 108923488A CN 201810811515 A CN201810811515 A CN 201810811515A CN 108923488 A CN108923488 A CN 108923488A
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- detection circuit
- control circuit
- control
- circuit
- switch
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- 238000001514 detection method Methods 0.000 claims abstract description 87
- 230000005611 electricity Effects 0.000 claims abstract description 19
- 239000004065 semiconductor Substances 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 101001068634 Homo sapiens Protein PRRC2A Proteins 0.000 description 1
- 101000908580 Homo sapiens Spliceosome RNA helicase DDX39B Proteins 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 102100033954 Protein PRRC2A Human genes 0.000 description 1
- 102100024690 Spliceosome RNA helicase DDX39B Human genes 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H02J7/0026—
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to battery charging field more particularly to a kind of battery charging management systems, including：First detection circuit, the second detection circuit, first control circuit, second control circuit and switch；The input terminal of first detection circuit is separately connected every economize on electricity core, the input terminal of first control circuit connects the output end of the first detection circuit, the output end connection switch of first control circuit and the input terminal of the second detection circuit, the input terminal of the second detection circuit are also respectively connected with every group of battery core；The input terminal of second control circuit connects the output end of the second detection circuit, the output end connection switch of second control circuit；The output end of one end connection charger is switched, one end connects battery core.Beneficial effect of the present invention：When a wherein alignment detection circuit or control circuit fail, in addition detection circuit and control circuit can also detect in battery pack battery core over-voltage signal and turn off the charger and gives battery pack charging all the way, and can be very good single battery in prevention battery pack overcharges risk.
Description
Technical field
The present invention relates to battery charging field more particularly to battery charging management systems.
Background technique
The lithium battery management systems such as electric tool, garden instrument class currently on the market, battery battery core overcharges in order to prevent,
It is most of to use an alignment detection circuit and protect control circuit all the way.One alignment detection circuit is used to detect the voltage of battery core, all the way
Control circuit is used to control whether charging system charges according to the voltage of detection.
When an alignment detection circuit in battery pack or all the way when the failure of protection control circuit, there is single battery in battery pack
Risk is filled, battery core bulging is caused, can even be smoldered if serious on fire.
Summary of the invention
To solve the above problems, the present invention proposes the battery charging management of two-way detection circuit, two-way protection control circuit
System.
Battery charging management system, including：First detection circuit, the second detection circuit, first control circuit, the second control
Circuit and switch；The input terminal of first detection circuit is separately connected every economize on electricity core, for detecting the voltage of every economize on electricity core
Value, and first control signal is exported according to testing result；The input terminal of the first control circuit connects the first detection circuit
Output end, the output end of first control circuit are separately connected the input terminal of switch and the second detection circuit, for according to first
The first control signal of detection circuit output carrys out the open or close of control switch；The input terminal of second detection circuit also divides
Every group of battery core is not connected, for detecting the voltage value of every group of battery core, the first control signal of transmission the first detection circuit output, and
Second control signal is exported according to testing result；The input terminal of the second control circuit connects the output of the second detection circuit
End, the output end connection switch of second control circuit, first control signal for being exported according to the first detection circuit and the
The second control signal of two detection circuits output carrys out the open or close of control switch；The input of switch one end connection power supply
End, one end connect battery core；When first control circuit, second control circuit simultaneously turn on, close the switch；Work as first control circuit
Or second control circuit, when being not turned on, switch is opened.
Preferably, first detection circuit, the second detection circuit are set in battery pack, the first control circuit, the
Two control circuits are set in charger.
Preferably, first detection circuit includes triode Q4, metal-oxide-semiconductor Q5 and at least one detection chip, described
The input terminal of detection chip is connected with corresponding battery core, the base stage of output end connecting triode Q4 and the grid of metal-oxide-semiconductor Q5,
The emitter of the triode Q4 is grounded, current collection extremely the first signal output end, the source electrode ground connection of the metal-oxide-semiconductor Q5, leakage
Pole connects the second detection circuit, and the detection chip is used to detect the voltage value of every economize on electricity core, and judges wherein with the presence or absence of extremely
The voltage value of few economize on electricity core is greater than overvoltage protection value, and if it exists, then the first control of the output of detection chip corresponding to the battery core
Signal.
Preferably, the first control circuit includes triode Q2, Q3, resistance R1, R2, the emitter of the triode Q2
It is separately connected one end of resistance R1 and the collector of triode Q3, the collector connection switch of triode Q2, triode Q2's
Base stage is separately connected one end of the other end of resistance R1, the base stage of triode Q3 and resistance R2, the transmitting of the triode Q3
Pole is separately connected the other end of 12V power output end and resistance R2.
Preferably, second detection circuit includes the first micro-control unit, the first micro-control unit input terminal point
The output end for not connecting every group of battery core and first control circuit is used for transmission the first control letter of the first detection circuit output
Number, the total voltage value of every group of battery core of detection, and calculate the voltage difference between each group battery core, it is total to judge whether there is at least one
Voltage value is greater than total overvoltage protection value or is greater than protection value threshold value with the presence or absence of at least one voltage difference, and if it exists, then first
Micro-control unit exports second control signal.
Preferably, the second control circuit includes the second micro-control unit, capacitor C1 and metal-oxide-semiconductor Q1, and described second
The first end of micro-control unit is separately connected the second detection circuit output end and one end of capacitor C1, the second micro-control unit
Second end connects the grid of metal-oxide-semiconductor Q1, the third end ground connection of the second micro-control unit, the other end ground connection of the capacitor C1, institute
The source electrode ground connection of metal-oxide-semiconductor Q1 is stated, drain connection switch.
By using the present invention, following effect may be implemented：
When wherein control circuit is not turned on all the way, switch is disconnected, and charger stops charging；When a wherein alignment detection circuit
When failure, in addition an alignment detection circuit can also detect in battery pack battery core over-voltage signal and turn off the charger and fill to battery pack
Electricity, can be very good prevention battery pack overcharges risk.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is module connection diagram of the present invention；
Fig. 2 is circuit diagram of the present invention.
Specific embodiment
Below in conjunction with attached drawing, technical scheme of the present invention will be further described, but the present invention is not limited to these realities
Apply example.
The present invention provides battery charging management systems, and in conjunction with attached drawing 1, which includes：First in battery pack
Detection circuit, the second detection circuit and first control circuit, second control circuit and switch in charger.First
The input terminal of detection circuit is separately connected every economize on electricity core, for detecting the voltage value of every economize on electricity core, and exports according to testing result
First control signal；The input terminal of first control circuit connects the output end of the first detection circuit, the output of first control circuit
End is separately connected the input terminal of switch and the second detection circuit, the first control signal for exporting according to the first detection circuit
Carry out the open or close of control switch；The input terminal of second detection circuit is also respectively connected with every group of battery core, for detecting every group of electricity
The first control signal that the voltage value of core, the first detection circuit of transmission export, and second control signal is exported according to testing result；
The input terminal of second control circuit connects the output end of the second detection circuit, and the output end connection switch of second control circuit is used
It is controlled in second control signal that the first control signal exported according to the first detection circuit and the second detection circuit export
The open or close of switch；The input terminal of one end connection power supply is switched, one end connects battery core；When first control circuit, the second control
When circuit processed simultaneously turns on, close the switch；When first control circuit or second control circuit are not turned on, switch is opened.
In order to avoid detection circuit or control circuit fail, and lead to overcharging for battery pack, the present invention is in battery charging valve
The control circuit that two detection circuits are set in reason system and are connect respectively with this two detection circuits.When and only two control
When circuit processed is connected, switch could be closed, and charger could charge；When wherein there is a control circuit to be not turned on
It waits, that is, when failure, switch is opened, charger stops charging.When wherein an alignment detection circuit fails, in addition all the way
Detection circuit can also detect battery core over-voltage signal in battery pack and issue control signal to control circuit, and control circuit is according to control
Signal processed turns off the switch, and charger stops giving battery pack charging, and can be very good prevention battery pack overcharges risk.
In the present embodiment, it switchs as relay RY1.Relay RY1 is made of coil and contact two parts.Coil
Both ends are separately connected first control circuit and second control circuit, when first control circuit, second control circuit simultaneously turn on,
Power supply is connect by charger with battery pack input terminal, and charger charges to battery pack, when first control circuit or second
When control circuit is not turned on, power supply and battery pack input terminal are disconnected, then charger stops charging to battery pack.
With reference to the accompanying drawing 2, respectively to the first detection circuit, the second detection circuit, first control circuit and the second control
The circuit connection and principle of circuit processed are illustrated.
First detection circuit includes resistance R3, triode Q4, metal-oxide-semiconductor Q5 and detection chip IC1, IC2 ... ICn.Inspection
Survey chip IC 1, IC2 ... ICn includes test side VC1, VC2, VC3, VC4, VC5 and output end C_out.Test side
VC1, VC2, VC3, VC4, VC5 carry out voltage detecting to every economize on electricity core in battery pack respectively, and obtain corresponding detection battery core
Voltage value.Detection chip judges to be greater than overvoltage protection with the presence or absence of the voltage value of at least one economize on electricity core in the voltage value obtained respectively
Value, then illustrates that the battery core voltage has reached saturation if it exists, then detection chip corresponding to battery core passes through output end C_out
First control signal is exported, first control signal is level signal.
First control circuit includes triode Q2, Q3, resistance R1, R2, and the emitter of the triode Q2 is separately connected electricity
Hinder one end of R1 and the collector of triode Q3, one end of the coil of the collector connection relay RY1 of triode Q2, three poles
The base stage of pipe Q2 is separately connected one end of the other end of resistance R1, the base stage of triode Q3 and resistance R2, the triode Q3
Emitter be separately connected the other end of 12V power output end and resistance R2.During charger is in charging, three poles
Pipe Q2, Q3 are respectively at the state of conducting, if the first detection circuit issues level signal, triode Q4, metal-oxide-semiconductor Q5 are led respectively
It is logical, and triode Q2, Q3 become the state of cut-off, first control circuit is in the state being not turned at this time, and relay RY1 is disconnected
It opens, charger stops charging to battery pack.
Second detection circuit includes the first micro-control unit U4, and the first micro-control unit U4 input terminal is separately connected every group of electricity
Core BAT1, BAT2 ... BATn.First micro-control unit U4 further includes input terminal C_in, input terminal C_in connection metal-oxide-semiconductor Q5
Source electrode, for receiving the output signal of first control circuit.
On the one hand first micro-control unit U4 detects the total voltage value of every group of battery core, and calculate the voltage between each group battery core
Difference judges whether there is at least one total voltage value and is greater than total overvoltage protection value or big with the presence or absence of at least one voltage difference
In protection value threshold value.On the other hand, if the first micro-control unit U4 receives the first control signal of first control circuit output,
First control signal is then exported by output end ID1.If there are at least one total electricity in the total voltage value of the every group of battery core calculated
Pressure value is greater than total overvoltage protection value, then illustrates that the total voltage of this group of battery core has reached saturation, then the first micro-control unit passes through
Output end ID1 exports second control signal；If in the voltage difference between each group battery core calculated, there are at least one voltage differences
Value is greater than protection value threshold value, then illustrates that the voltage of this group of battery core has reached saturation or charging exception occurs, then the first micro-control
Unit processed exports second control signal by output end ID1, and second control signal is level signal.
Second control circuit includes the second micro-control unit U1, capacitor C1 and metal-oxide-semiconductor Q1.Second micro-control unit U1's
First end ID2 is separately connected the second detection circuit output end and one end of capacitor C1, the grid of second end Con connection metal-oxide-semiconductor Q1
Pole, third end ground connection, the other end ground connection of capacitor C1, the source electrode ground connection of metal-oxide-semiconductor Q1, drain connection switch.Second microcontroller list
When the first end ID2 of first U1 receives the first control signal or second control signal of the first micro-control unit sending, pass through
Second end Con outputs level signals, control metal-oxide-semiconductor Q1 are disconnected, and relay RY1 is disconnected at this time, and charger stops charging to battery core.
Wherein, capacitor C1 plays the role of filtering, is filtered to the output signal of the second detection circuit.
Those skilled in the art can make various modifications to described specific embodiment
Or supplement or be substituted in a similar manner, however, it does not deviate from the spirit of the invention or surmounts the appended claims determines
The range of justice.
Claims (6)
1. battery charging management system, which is characterized in that including：First detection circuit, the second detection circuit, the first control electricity
Road, second control circuit and switch；
The input terminal of first detection circuit is separately connected every economize on electricity core, for detect it is every economize on electricity core voltage value, and according to
Testing result exports first control signal；
The input terminal of the first control circuit connects the output end of the first detection circuit, the output end difference of first control circuit
The input terminal of connection switch and the second detection circuit, first control signal for being exported according to the first detection circuit control
The open or close of switch；
The input terminal of second detection circuit is also respectively connected with every group of battery core, for detecting voltage value, the transmission of every group of battery core
The first control signal of first detection circuit output, and second control signal is exported according to testing result；
The input terminal of the second control circuit connects the output end of the second detection circuit, the output end connection of second control circuit
Switch, the second control signal of first control signal and the output of the second detection circuit for being exported according to the first detection circuit
Carry out the open or close of control switch；
The input terminal of switch one end connection power supply, one end connects battery core；When first control circuit, second control circuit simultaneously
When conducting, close the switch；When first control circuit or second control circuit are not turned on, switch is opened.
2. battery charging management system according to claim 1, which is characterized in that first detection circuit, the second inspection
Slowdown monitoring circuit is set in battery pack, and the first control circuit, second control circuit and switch are set in charger.
3. battery charging management system according to claim 1, which is characterized in that first detection circuit includes three poles
Pipe Q4, metal-oxide-semiconductor Q5 and at least one detection chip, the input terminal of the detection chip are connected with corresponding battery core, output
Hold the base stage of connecting triode Q4 and the grid of metal-oxide-semiconductor Q5, the emitter ground connection of the triode Q4, current collection extremely first
Signal output end, the source electrode ground connection of the metal-oxide-semiconductor Q5, drain electrode the second detection circuit of connection, the detection chip is for detecting
The voltage value of every economize on electricity core, and judge wherein to be greater than overvoltage protection value with the presence or absence of the voltage value of at least one economize on electricity core, and if it exists,
Then detection chip corresponding to the battery core exports first control signal.
4. battery charging management system according to claim 1, which is characterized in that the first control circuit includes three poles
Pipe Q2, Q3, resistance R1, R2, the emitter of the triode Q2 are separately connected one end of resistance R1 and the current collection of triode Q3
Pole, the collector connection switch of triode Q2, the base stage of triode Q2 are separately connected the base of the other end of resistance R1, triode Q3
Pole and one end of resistance R2, the emitter of the triode Q3 are separately connected the another of 12V power output end and resistance R2
End.
5. battery charging management system according to claim 1, which is characterized in that second detection circuit includes first
Micro-control unit, the first micro-control unit input terminal are separately connected the output end of every group of battery core and first control circuit,
It is used for transmission the first control signal of the first detection circuit output, detects the total voltage value of every group of battery core, and calculate each group battery core
Between voltage difference, judge whether there is at least one total voltage value greater than total overvoltage protection value or with the presence or absence of at least one
Voltage difference is greater than protection value threshold value, and if it exists, then the first micro-control unit exports second control signal.
6. battery charging management system according to claim 1, which is characterized in that the second control circuit includes second
Micro-control unit, capacitor C1 and metal-oxide-semiconductor Q1, it is defeated that the first end of second micro-control unit is separately connected the second detection circuit
One end of outlet and capacitor C1, the grid of the second end connection metal-oxide-semiconductor Q1 of the second micro-control unit, the second micro-control unit
Third end ground connection, the other end ground connection of the capacitor C1, the source electrode ground connection of the metal-oxide-semiconductor Q1, drain connection switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811515.8A CN108923488B (en) | 2018-07-23 | 2018-07-23 | Battery charging management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811515.8A CN108923488B (en) | 2018-07-23 | 2018-07-23 | Battery charging management system |
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| Publication Number | Publication Date |
|---|---|
| CN108923488A true CN108923488A (en) | 2018-11-30 |
| CN108923488B CN108923488B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810811515.8A Active CN108923488B (en) | 2018-07-23 | 2018-07-23 | Battery charging management system |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113454870A (en) * | 2020-04-30 | 2021-09-28 | 深圳市大疆创新科技有限公司 | Charging control circuit, charging management system with same and charging device |
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| JP2000195560A (en) * | 1998-12-25 | 2000-07-14 | Matsushita Electric Ind Co Ltd | Battery pack |
| CN101119020A (en) * | 2007-09-12 | 2008-02-06 | 中兴通讯股份有限公司 | Terminal equipment charging overvoltage protective device and method |
| CN101534017A (en) * | 2008-01-02 | 2009-09-16 | 何岳明 | Charge-discharge protection circuit for a plurality of lithium batteries |
| JP2010114958A (en) * | 2008-11-04 | 2010-05-20 | Hitachi Koki Co Ltd | Charger |
| CN101814754A (en) * | 2010-03-31 | 2010-08-25 | 芜湖天元汽车电子有限公司 | Power supply management system for lithium battery pack |
| CN101916983A (en) * | 2010-08-25 | 2010-12-15 | 海洋王照明科技股份有限公司 | Battery protection circuit and portable light |
| CN103217605A (en) * | 2013-03-26 | 2013-07-24 | 中颖电子股份有限公司 | Charger detection device for battery protection cascade system |
| CN203368072U (en) * | 2013-07-02 | 2013-12-25 | Tcl通力电子（惠州）有限公司 | A charge management circuit and a charging device |
-
2018
- 2018-07-23 CN CN201810811515.8A patent/CN108923488B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000195560A (en) * | 1998-12-25 | 2000-07-14 | Matsushita Electric Ind Co Ltd | Battery pack |
| CN101119020A (en) * | 2007-09-12 | 2008-02-06 | 中兴通讯股份有限公司 | Terminal equipment charging overvoltage protective device and method |
| CN101534017A (en) * | 2008-01-02 | 2009-09-16 | 何岳明 | Charge-discharge protection circuit for a plurality of lithium batteries |
| JP2010114958A (en) * | 2008-11-04 | 2010-05-20 | Hitachi Koki Co Ltd | Charger |
| CN101814754A (en) * | 2010-03-31 | 2010-08-25 | 芜湖天元汽车电子有限公司 | Power supply management system for lithium battery pack |
| CN101916983A (en) * | 2010-08-25 | 2010-12-15 | 海洋王照明科技股份有限公司 | Battery protection circuit and portable light |
| CN103217605A (en) * | 2013-03-26 | 2013-07-24 | 中颖电子股份有限公司 | Charger detection device for battery protection cascade system |
| CN203368072U (en) * | 2013-07-02 | 2013-12-25 | Tcl通力电子（惠州）有限公司 | A charge management circuit and a charging device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113454870A (en) * | 2020-04-30 | 2021-09-28 | 深圳市大疆创新科技有限公司 | Charging control circuit, charging management system with same and charging device |
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| CN108923488B (en) | 2024-05-14 |
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