CN206742882U - Motorcycle lithium battery charging circuit - Google Patents
Motorcycle lithium battery charging circuit Download PDFInfo
- Publication number
- CN206742882U CN206742882U CN201720143890.0U CN201720143890U CN206742882U CN 206742882 U CN206742882 U CN 206742882U CN 201720143890 U CN201720143890 U CN 201720143890U CN 206742882 U CN206742882 U CN 206742882U
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- charging circuit
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of motorcycle lithium battery charging circuit, it includes：Respectively connecting the connection end of charging end first and second connection end；The more cells being connected in series, it is connected with first connection end and the second connection end；Equalization charging circuit；Surge adjusts circuit, is connected between the first connection end and battery, it includes：Metal-oxide-semiconductor, source electrode are connected with the first connection end, and the negative electrode respectively with battery and diode that drains is connected, the first end connection of grid and first resistor, the second end ground connection of the first resistor；PNP triode, emitter stage are connected with the first connection end, the grid connection of colelctor electrode and metal-oxide-semiconductor, and the first end of base stage and second resistance connects；The second end connection of NPN triode, colelctor electrode and second resistance, grounded emitter, base stage are connected with the first end of 3rd resistor and the anode of diode respectively, the second end ground connection of 3rd resistor.Surge regulation circuit small volume in the circuit, cost are relatively low.
Description
Technical field
It the utility model is related to charging circuit, more particularly to motorcycle lithium battery charging circuit.
Background technology
In recent years, lithium battery with its own energy density is high, in light weight, small volume, memory-less effect, it is pollution-free, follow
The advantages such as ring long lifespan, just gradually there are the application of larger share, the nickel-cadmium cell or Ni-MH battery of certain fields in multiple fields
All substituted by lithium battery.
During to lithium cell charging, charging end can make battery pair because the unstable of voltage can form surge
Infringement, typically surge restraint circuit can be set in charging end.But present Surge suppression circuit is complex, cost is higher.
Utility model content
In view of the shortcomings of the prior art, the utility model is intended to a kind of lithium battery charging circuit that can suppress surge.
To achieve the above object, the utility model adopts the following technical scheme that：
A kind of motorcycle lithium battery charging circuit, it includes：Respectively connecting the connection end of charging end first and second
Connection end；The more cells being connected in series, it is connected with first connection end and the second connection end, to battery
Charging；Equalization charging circuit with control of discharge module, electronic switch and discharge resistance, the quantity of the equalization charging circuit
Equal with the quantity of cell, each equalization charging circuit connects with corresponding cell；Wherein, the control of discharge mould
Block includes current-limiting resistance, isolation capacitance and battery protection ic, the positive power source terminal of the battery protection ic by current-limiting resistance with it is right
The positive pole connection for the cell answered, the negative power end of battery protection ic connects with the negative pole of corresponding cell, corresponding
The positive pole of cell is connected by isolation capacitance with its negative pole；The electronic switch has first end pin, the second end pin and
The first end pin of three end pin, the control terminal of battery protection ic and electronic switch connects, the second end pin of electronic switch with it is corresponding
The positive pole connection of cell, the 3rd end pin of electronic switch are connected by the negative pole of discharge resistance and cell；Surge is adjusted
Economize on electricity road, is connected between the first connection end and the battery, and the surge regulation circuit includes：Metal-oxide-semiconductor, source electrode and first connect
End connection is connect, the negative electrode respectively with battery and diode that drains is connected, the first end connection of grid and first resistor, and described first
The second end ground connection of resistance；PNP triode, emitter stage are connected with the first connection end, the grid connection of colelctor electrode and metal-oxide-semiconductor, base
The first end of pole and second resistance connects；The second end connection of NPN triode, colelctor electrode and second resistance, grounded emitter, base
Pole is connected with the first end of 3rd resistor and the anode of the diode respectively, the second end ground connection of 3rd resistor.
Further improved as the utility model, the electronic switch is triode or metal-oxide-semiconductor.
Further improved as the utility model, the model S8241 of the battery protection ic.
Further improved as the utility model, the equalization charging circuit also includes a temperature sensor, the temperature
Spend the keying that sensor is used for electronic switch corresponding to the temperature control of cell corresponding to.
Further improved as the utility model, the temperature sensor is thermistor.
The beneficial effects of the utility model are：Compared to prior art, the surge in the utility model adjusts circuit body
Product is smaller, and cost is relatively low.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, and in order to allow above and other purpose of the present utility model, feature
It can be become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, described in detail as follows.
Brief description of the drawings
Fig. 1 is the structural representation of motorcycle lithium battery charging circuit in the utility model embodiment.
Embodiment
Below, with reference to accompanying drawing and embodiment, the utility model is described further：
As shown in figure 1, a kind of motor vehicle lithium battery with equalization charging circuit, it includes：First connection end, second connect
Connect end, three cells being connected in series, three equalization charging circuits and surge regulation circuit, the equalization charging circuit
Including control of discharge module, electronic switch, temperature sensor and discharge resistance.First connection end and second connection end connect respectively
Charging end, to charge the battery, each equalization charging circuit connects with a corresponding cell, surge regulation circuit connection
First connection end and battery, surge regulation circuit suppress the voltage surge of charging end.
Surge regulation circuit includes：Metal-oxide-semiconductor, PNP triode, NPN triode, diode etc..The source electrode of metal-oxide-semiconductor and first
Connection end is connected, and the negative electrode respectively with battery and diode of draining be connected, and the first end of grid and first resistor connects, and described the
The second end ground connection of one resistance.The emitter stage of PNP triode is connected with the first connection end, the grid connection of colelctor electrode and metal-oxide-semiconductor,
The first end of base stage and second resistance connects.The colelctor electrode of NPN triode and the second end of second resistance connect, and emitter stage connects
Ground, base stage are connected with the first end of 3rd resistor and the anode of the diode respectively, the second end ground connection of 3rd resistor.
Control of discharge module, for opening for electronic switch corresponding to the voltage signal control of cell corresponding to
Close, so that corresponding cell is in is discharged and stopped the one of which shape in electric discharge by corresponding discharge resistance
State.
Temperature sensor is used for the keying of electronic switch corresponding to the temperature control of cell corresponding to.
Specifically, three cells are designated as the first cell, second comonomer battery and Third monomer battery respectively.
As shown in figure 1, the first connection end DC1 is connected with the first end of surge regulation circuit 110, surge regulation circuit
110 the second end is connected with terminal BC3, and second connection end DC2 is connected with terminal BC0, the positive pole and terminal of the first cell
BC1 connections, its negative pole are connected with terminal BC0；The positive pole of second comonomer battery is connected with electronics BC2, and its negative pole connects with terminal BC1
Connect；The positive pole of Third monomer battery is connected with electronics BC3, and its negative pole is connected with terminal BC2, so that three cells are formed
Series connection.
Surge regulation circuit 110 is described now.Metal-oxide-semiconductor, PNP triode, NPN triode, diode etc..MOS
Pipe Q111 source electrode is connected with the first connection end DC1, and the negative electrode respectively with battery and diode D114 of draining is connected, grid and the
One resistance R115 first end connection, first resistor R115 the second end ground connection.PNP triode Q112 emitter stage and first connects
End DC1 connections are connect, colelctor electrode is connected with metal-oxide-semiconductor Q111 grid, and base stage is connected with second resistance R116 first end.NPN tri-
Pole pipe Q113 colelctor electrode is connected with second resistance R116 the second end, grounded emitter, base stage respectively with 3rd resistor R117
First end connected with diode D114 anode, 3rd resistor R117 the second end ground connection.
It is balanced that three equalization charging circuits are designated as the first equalization charging circuit, the second equalization charging circuit and the 3rd respectively
Charging circuit.
Wherein, the first equalization charging circuit includes the first control of discharge module, the first electronic switch, the first temperature sensor
With the first discharge resistance；Second equalization charging circuit includes the second control of discharge module, the second electronic switch, second temperature sensing
Device and the second discharge resistance；3rd equalization charging circuit includes the 3rd control of discharge module, the 3rd electronic switch, the 3rd temperature and passed
Sensor and the 3rd discharge resistance.
First control of discharge module includes current-limiting resistance R89, isolation capacitance C36 and battery protection ic U27.First electronics
Switch the metal-oxide-semiconductor Q42 for p-type.First temperature sensor is the thermistor PTC1 of positive temperature coefficient type.First discharge resistance by
Resistance R128 and resistance R131 are formed in parallel.
Second control of discharge module includes current-limiting resistance R83, isolation capacitance C35 and battery protection ic U26.Second electronic cutting
Close the metal-oxide-semiconductor Q41 for p-type.Second temperature sensor is the thermistor PTC2 of positive temperature coefficient type.Second discharge resistance is by electricity
Resistance R127 and resistance R130 is formed in parallel.
3rd control of discharge module includes current-limiting resistance R37, isolation capacitance C34 and battery protection ic U25.3rd electronics
Switch the metal-oxide-semiconductor Q40 for p-type.Three-temperature sensor is the thermistor PTC3 of positive temperature coefficient type.3rd discharge resistance by
Resistance R126 and resistance R129 are formed in parallel.Battery protection ic U25-U27 model is S8241.Metal-oxide-semiconductor Q40-Q42 type
Number it is AO3401.
Below, for the ease of reading, only by the first cell with entering exemplified by the annexation of the first equalization charging circuit
Row is described in detail, the annexation all same of other monomers battery and equalization charging circuit, to describe the charging circuit.
Under normal circumstances, charging current is directly through the metal-oxide-semiconductor by first resistor R115 and second resistance R116 biasings
Q111, but after voltage generation surge occurs for charging end, diode D114 conductings, the base of current direction NPN triode Q1 13
Pole, so as to cause PNP triode Q112 to turn on, so that metal-oxide-semiconductor Q111 grid voltage reduces, so as to turn off metal-oxide-semiconductor
Q111, therefore no longer charged to battery, play a part of protecting battery, surge regulation circuit structure is simple, and cost is relatively low.
Battery protection ic U27 positive power source terminal VDD is connected by current-limiting resistance R89 with terminal BC1, battery protection ic U27
Negative power end VSS be connected with to terminal BC0, terminal BC1 is connected by isolation capacitance C36 with terminal BC0.Battery protection
ICU27 control terminal CO is connected with metal-oxide-semiconductor Q42 grid, and metal-oxide-semiconductor Q42 source electrode is connected by thermistor PTC1 and terminal BC1
Connect, metal-oxide-semiconductor Q42 drain electrode is connected by the first discharge resistance with terminal BC0.
Thermistor PTC1 is mounted on the surface of the first cell.
Its operation principle is that first to Third monomer battery is charged by charging circuit to it, in charging process, due to each
The internal resistance of cell is different, and the small cell of internal resistance can first be full of, now, if battery protection ic U27 by it just
When power end VDD and negative power end VSS monitors that the voltage of the first cell is higher than 3.65V (predeterminated voltage), its control is controlled
End CO processed exports high level signal, so that metal-oxide-semiconductor Q42 is turned on, the first cell is discharged by the first discharge resistance,
In discharge process, if the temperature of the first cell, more than 75 DEG C, thermistor PTC1 resistance becomes very big, and metal-oxide-semiconductor Q42 is not
Turn-on condition can be reached and ended, so that the first cell stops discharging in high temperature environments, if temperature falls back to 55 DEG C
Afterwards, metal-oxide-semiconductor Q42 is turned on again.If the voltage of the first cell is in below 3.65V, battery protection ic U27 control terminal CO
Low level signal is exported, ends metal-oxide-semiconductor Q42, the first cell stops electric discharge.
In addition, above-described embodiment can also be not provided with temperature sensor, it can equally reach the effect of charging balance.
For those skilled in the art, technical scheme that can be as described above and design, make other each
Kind is corresponding to be changed and deforms, and all these change and deformed the guarantor that should all belong to the utility model claims
Within the scope of shield.
Claims (5)
1. a kind of motorcycle lithium battery charging circuit, including：
Respectively connecting the connection end of charging end first and second connection end；
The more cells being connected in series, it is connected with first connection end and the second connection end, to be filled to battery
Electricity；And
Equalization charging circuit with control of discharge module, electronic switch and discharge resistance, the quantity of the equalization charging circuit
Equal with the quantity of cell, each equalization charging circuit connects with corresponding cell；Wherein, the control of discharge mould
Block includes current-limiting resistance, isolation capacitance and battery protection ic, the positive power source terminal of the battery protection ic by current-limiting resistance with it is right
The positive pole connection for the cell answered, the negative power end of battery protection ic connects with the negative pole of corresponding cell, corresponding
The positive pole of cell is connected by isolation capacitance with its negative pole；The electronic switch has first end pin, the second end pin and
The first end pin of three end pin, the control terminal of battery protection ic and electronic switch connects, the second end pin of electronic switch with it is corresponding
The positive pole connection of cell, the 3rd end pin of electronic switch are connected by the negative pole of discharge resistance and cell；Its feature
It is,
Also include surge regulation circuit, be connected between the first connection end and the battery, the surge regulation circuit includes：
Metal-oxide-semiconductor, source electrode are connected with the first connection end, and the negative electrode respectively with battery and diode of draining is connected, grid and first resistor
First end connects, the second end ground connection of the first resistor；
PNP triode, emitter stage are connected with the first connection end, the connection of the grid of colelctor electrode and metal-oxide-semiconductor, base stage and second resistance
First end connects；
The second end connection of NPN triode, colelctor electrode and second resistance, grounded emitter, base stage respectively with 3rd resistor the
One end connects with the anode of the diode, the second end ground connection of 3rd resistor.
2. motorcycle lithium battery charging circuit as claimed in claim 1, it is characterised in that the electronic switch be triode or
Metal-oxide-semiconductor.
3. motorcycle lithium battery charging circuit as claimed in claim 1, it is characterised in that the model of the battery protection ic
S8241。
4. motorcycle lithium battery charging circuit as claimed in claim 1, it is characterised in that the equalization charging circuit also includes
One temperature sensor, the temperature sensor are used for opening for electronic switch corresponding to the temperature control of cell corresponding to
Close.
5. motorcycle lithium battery charging circuit as claimed in claim 4, it is characterised in that the temperature sensor is temperature-sensitive electricity
Resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720143890.0U CN206742882U (en) | 2017-02-16 | 2017-02-16 | Motorcycle lithium battery charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720143890.0U CN206742882U (en) | 2017-02-16 | 2017-02-16 | Motorcycle lithium battery charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206742882U true CN206742882U (en) | 2017-12-12 |
Family
ID=60556932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720143890.0U Expired - Fee Related CN206742882U (en) | 2017-02-16 | 2017-02-16 | Motorcycle lithium battery charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206742882U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3086811A1 (en) * | 2018-09-27 | 2020-04-03 | Continental Automotive France | OVERVOLTAGE PROTECTION CIRCUIT |
| CN111953031A (en) * | 2019-05-17 | 2020-11-17 | 南京苏梦电子科技有限公司 | Multi-string battery pack and equalization switch thereof |
-
2017
- 2017-02-16 CN CN201720143890.0U patent/CN206742882U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3086811A1 (en) * | 2018-09-27 | 2020-04-03 | Continental Automotive France | OVERVOLTAGE PROTECTION CIRCUIT |
| CN111953031A (en) * | 2019-05-17 | 2020-11-17 | 南京苏梦电子科技有限公司 | Multi-string battery pack and equalization switch thereof |
| CN111953031B (en) * | 2019-05-17 | 2024-02-02 | 无锡有容微电子有限公司 | Multi-string battery pack and balanced switch thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20210216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |