CN103855728A - Energy-saving charging control circuit used for power lithium ion battery formation - Google Patents
Energy-saving charging control circuit used for power lithium ion battery formation Download PDFInfo
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- CN103855728A CN103855728A CN201210496358.9A CN201210496358A CN103855728A CN 103855728 A CN103855728 A CN 103855728A CN 201210496358 A CN201210496358 A CN 201210496358A CN 103855728 A CN103855728 A CN 103855728A
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- ion battery
- power lithium
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- energy
- power supply
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Abstract
The invention relates to an energy-saving charging control circuit used for power lithium ion battery formation. The energy-saving charging control circuit includes a programmable DC power supply, a charging switch, a discharging switch, a power lithium ion battery and a sampling resistor; the anode of the power lithium ion battery is respectively connected to the charging switch and the discharging switch, and a cathode of the power lithium ion battery is connected with the sampling resistor; the programmable DC power supply is respectively connected with the charging switch, the discharging switch, and the sampling resistor; the programmable DC power supply, the charging switch, the power lithium ion battery and the sampling resistor form a charging loop; the discharging circuit switch, the power lithium ion battery and the sampling resistor form a discharging loop; and the programmable DC power supply according to a current of the sampling resistor controls a charging voltage outputted to the power lithium ion battery. Compared with the prior art, the energy-saving charging control circuit used for the power lithium ion battery formation has the advantages of being simple in structure, capable of realizing energy conservation, and etc..
Description
Technical field
The present invention relates to a kind of power lithium-ion battery formation device, especially relate to a kind of energy-saving charging control circuit changing into for power lithium-ion battery.
Background technology
Lithium ion battery because operating voltage is high, volume is little, quality is light, memory-less effect, pollution-free, self discharge is little, have extended cycle life, and is a kind of ideal source.In actual use, in order to obtain higher discharge voltage, generally multiple monomer lithium ion batteries are composed in series to lithium ion battery group and use.Before composition battery pack, because the characteristic of each monomer is all not quite similar, must combo and sorting.The process of combo and sorting is exactly the process that lithium ion battery changes into.By monomer lithium ion battery charge and discharge test being obtained to the relevant information of the combo of monomer lithium ion battery, as monomer charge and discharge capacity, internal resistance, charge cutoff voltage, discharge cut-off voltage and self-discharge rate, cycle-index etc.Producer combines to obtain good output characteristic the identical battery of data according to these information.
Traditional Switching Power Supply, generally with fixed voltage output, regulates the charging current scheme of power lithium-ion battery by controlling the conducting resistance of metal-oxide-semiconductor.Because traditional scheme adopts the output of power supply constant voltage, change loop resistance value method regulating loop electric current, so just making a lot of energy is the energy of Switching Power Supply output more than power lithium-ion battery charging actual needs, has consumed with form of heat by resistance, causes great waste.
Summary of the invention
Object of the present invention be exactly provide in order to overcome the defect that above-mentioned prior art exists a kind of simple in structure, can realize the energy-conservation energy-saving charging control circuit changing into for power lithium-ion battery.
Object of the present invention can be achieved through the following technical solutions:
A kind of energy-saving charging control circuit changing into for power lithium-ion battery, comprise programmable DC power supply, charge switch, discharge switch, power lithium-ion battery and sample resistance, the positive pole of described power lithium-ion battery connects respectively charge switch and discharge switch, negative pole is connected with sample resistance, described programmable DC power supply connects respectively charge switch, discharge switch and sample resistance, described programmable DC power supply, charge switch, power lithium-ion battery and sample resistance form charge circuit, described discharge switch, power lithium-ion battery and sample resistance form discharge loop, described programmable DC power supply is exported to the charging voltage of power lithium-ion battery according to the Current Control of sample resistance.
Described programmable DC power supply is 5V programmable DC power supply.
Described sample resistance is fixed resistance value resistance.
Described charge switch and discharge switch are MOSFET pipe.
Compared with prior art, the power lithium-ion battery charging scheme that the present invention adopts the output voltage that regulates power supply output to change power supply to control, realize and needed how many energy charge switch power supplys just supply the charging of how many energy, can supply exceed demand, realize energy-saving charging.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is hardware circuit diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of energy-saving charging control circuit changing into for power lithium-ion battery, comprise programmable DC power supply 5, charge switch 3, discharge switch 4, power lithium-ion battery 1 and sample resistance 2, the positive pole of described power lithium-ion battery 1 connects respectively charge switch 3 and discharge switch 4, negative pole is connected with sample resistance 2, described programmable DC power supply 5 connects respectively charge switch 3, discharge switch 4 and sample resistance 2, described programmable DC power supply 5, charge switch 3, power lithium-ion battery 1 and sample resistance 2 form charge circuit, described discharge switch 4, power lithium-ion battery 1 and sample resistance 2 form discharge loop, described programmable DC power supply 5 is exported to the charging voltage of power lithium-ion battery 1 according to the Current Control of sample resistance 2.
Described programmable DC power supply 5 is 5V programmable DC power supply.Described sample resistance 2 is fixed resistance value resistance.Described charge switch 3 and discharge switch 4 are MOSFET pipe, play on-off action.
Be illustrated in figure 2 the hardware circuit diagram of the energy-saving charging control circuit of the present embodiment.Charging current setting signal is PWM pulse-width signal, and the duty ratio of pulsewidth (the high level part in periodic signal) is reacted user and set the size of electric current.Specific works principle is as follows:
VREF is 5V; BSS84 is P-channel field-effect transistor (PEFT) pipe, conducting when control signal is low-voltage; 2N7002 is N channel field-effect pipe, and control signal is high voltage conducting; Pulsewidth is narrower, and BSS84 ON time is longer, and the voltage that 3 pin of U6 are left is so just higher is that current settings is higher; Pulsewidth is wider, and 2N7002 ON time is longer, and the voltage that 3 pin of U6 are left is so just lower is that current settings is lower.
R76 is high-accuracy current divider and sample resistance, and the voltage signal on it is 2 pin that voltage signal that current sample gets is delivered to U6.Current settings signal just carries out differential amplification with the current signal sampling by U6 like this, the result drawing be used for by-pass cock power supply output so that control the size of charging current, reach the object of constant current control.
Traditional mode is the object that reaches charging constant current by the charge switch 3 in adjusting Fig. 1, can cause like this power dissipation ratio of charge switch larger, and such power consumption loses with the form of heating, quite not energy-conservation.The power lithium-ion battery charging scheme that this method adopts the output voltage that regulates power supply output to change power supply to control, can realize and need how many energy charge switch power supplys just to supply how many energy chargings, can supply exceed demand, by regulating the mode of the programmable DC power supply 5 in Fig. 1 to reach charging constant current control, charge switch 3, just as switch control use, only has conduction loss, very little, substantially can ignore, reach thus energy-conservation object.
Claims (4)
1. the energy-saving charging control circuit changing into for power lithium-ion battery, it is characterized in that, comprise programmable DC power supply, charge switch, discharge switch, power lithium-ion battery and sample resistance, the positive pole of described power lithium-ion battery connects respectively charge switch and discharge switch, negative pole is connected with sample resistance, described programmable DC power supply connects respectively charge switch, discharge switch and sample resistance, described programmable DC power supply, charge switch, power lithium-ion battery and sample resistance form charge circuit, described discharge switch, power lithium-ion battery and sample resistance form discharge loop, described programmable DC power supply is exported to the charging voltage of power lithium-ion battery according to the Current Control of sample resistance.
2. a kind of energy-saving charging control circuit changing into for power lithium-ion battery according to claim 1, is characterized in that, described programmable DC power supply is 5V programmable DC power supply.
3. a kind of energy-saving charging control circuit changing into for power lithium-ion battery according to claim 1, is characterized in that, described sample resistance is fixed resistance value resistance.
4. a kind of energy-saving charging control circuit changing into for power lithium-ion battery according to claim 1, is characterized in that, described charge switch and discharge switch are MOSFET pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496358.9A CN103855728A (en) | 2012-11-28 | 2012-11-28 | Energy-saving charging control circuit used for power lithium ion battery formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496358.9A CN103855728A (en) | 2012-11-28 | 2012-11-28 | Energy-saving charging control circuit used for power lithium ion battery formation |
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| CN103855728A true CN103855728A (en) | 2014-06-11 |
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| CN201210496358.9A Pending CN103855728A (en) | 2012-11-28 | 2012-11-28 | Energy-saving charging control circuit used for power lithium ion battery formation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836267A (en) * | 2014-07-28 | 2015-08-12 | 北汽福田汽车股份有限公司 | Charging/discharging control circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201107837Y (en) * | 2007-08-02 | 2008-08-27 | 珠海科利尔能源技术有限公司 | Photovoltaic road lamp load control device |
| US20100171469A1 (en) * | 2009-01-07 | 2010-07-08 | Ho-Jung Ju | Charging Circuit Having Smooth Charging Transition Mode |
| US20110001352A1 (en) * | 2009-07-01 | 2011-01-06 | Denso Corporation | Power source apparatus for vehicle |
| CN201985613U (en) * | 2010-12-08 | 2011-09-21 | 深圳硕日新能源科技有限公司 | Solar controller with commercial power complementation |
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2012
- 2012-11-28 CN CN201210496358.9A patent/CN103855728A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201107837Y (en) * | 2007-08-02 | 2008-08-27 | 珠海科利尔能源技术有限公司 | Photovoltaic road lamp load control device |
| US20100171469A1 (en) * | 2009-01-07 | 2010-07-08 | Ho-Jung Ju | Charging Circuit Having Smooth Charging Transition Mode |
| US20110001352A1 (en) * | 2009-07-01 | 2011-01-06 | Denso Corporation | Power source apparatus for vehicle |
| CN201985613U (en) * | 2010-12-08 | 2011-09-21 | 深圳硕日新能源科技有限公司 | Solar controller with commercial power complementation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836267A (en) * | 2014-07-28 | 2015-08-12 | 北汽福田汽车股份有限公司 | Charging/discharging control circuit |
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Application publication date: 20140611 |