CN103746433A - Multifunctional charging and discharging circuit and device consisting of same - Google Patents
Multifunctional charging and discharging circuit and device consisting of same Download PDFInfo
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- CN103746433A CN103746433A CN201410033435.6A CN201410033435A CN103746433A CN 103746433 A CN103746433 A CN 103746433A CN 201410033435 A CN201410033435 A CN 201410033435A CN 103746433 A CN103746433 A CN 103746433A
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Abstract
The invention discloses a multifunctional charging and discharging circuit and a device consisting of the same. The multifunctional charging and discharging circuit is used for charging and discharging lithium batteries. The charging and discharging circuit comprises a charging circuit digital controlled constant current source, a discharging circuit digital controlled constant current source and a battery voltage monitoring circuit; the charging circuit digital controlled constant current source comprises a first operational amplifier, a first Darlington tube, a first resistor, a first inductor and a fifth resistor; the discharging circuit digital controlled constant current source comprises a second operational amplifier, a second Darlington tube, a second resistor, a second inductor and a sixth resistor. The charging and discharging circuit and the device based on a digital controlled constant current source technology are adopted, the magnitude of the charging and discharging current can be conveniently set, the charging and discharging circuit and the device are suitable for battery cells with various capacities, the charging and discharging circuit can acquire charging and discharging voltage and current data, a charging and discharging characteristic curve is displayed on a liquid crystal display (LCD) screen in real time, the charging and discharging current is subjected to time integral to obtain battery capacity, and charging and discharging characteristic curves of the lithium batteries can be transmitted to a computer for display or storage.
Description
Technical field
The present invention relates to discharge and recharge technical field, in particular, the particularly device of a kind of multi-functional charge-discharge circuit and composition thereof.
Background technology
Growing along with battery technology, the capacity of cell is increasing, but whether the actual capacity of cell is reached to its nominal capacity, lacks convenient effective detection means.Cell charger in the market can only complete charge function, and can the actual capacity that cannot detect battery reach its nominal capacity.Existing cell charger does not possess discharging function in addition, does not more possess the function that charging and discharging currents size is set, and cannot take into account high capacity cell and small-capacity cells.If use large electric current to discharge and recharge small-capacity cells, will have potential safety hazard; If use little electric current to discharge and recharge high capacity cell, charge and discharge process needs for a long time.
Summary of the invention
The object of the present invention is to provide the device of a kind of multi-functional charge-discharge circuit and composition thereof.
In order to solve problem set forth above, the technical solution used in the present invention is:
A kind of multi-functional charge-discharge circuit, for lithium battery is discharged and recharged, this charge-discharge circuit comprises charging circuit digital-control constant-flow source, discharge circuit digital-control constant-flow source and battery voltage supervisory circuit; Described charging circuit digital-control constant-flow source comprises the first operational amplifier, the first Darlington transistor, the first resistance, the first inductance and the 5th resistance, the output of described the first operational amplifier is connected with the transistor base before the first Darlington transistor through the first resistance, the input cathode of the first operational amplifier is through the 5th grounding through resistance, the first Darlington transistor transistor emitter is below connected with the first inductance, and described battery voltage supervisory circuit is connected between the first inductance and the 5th resistance; Described discharge circuit digital-control constant-flow source comprises the second operational amplifier, the second Darlington transistor, the second resistance, the second inductance and the 6th resistance, the output of described the second operational amplifier is connected with the transistor base before the second Darlington transistor through the second resistance, the input cathode of the second operational amplifier is connected with the 5th resistance through the 6th resistance, the second Darlington transistor triode emitter is below connected with the 6th resistance through the second inductance, and the transistor collector before the second Darlington transistor is connected with the first inductance after being connected with transistor collector below; Described battery voltage supervisory circuit is also connected to the two ends of lithium battery.
According to a preferred embodiment of the invention: described battery voltage supervisory circuit comprises the third and fourth resistance, described the 3rd resistance one end is connected with the first inductance, the other end is connected with the 5th resistance through the 4th resistance, and described the third and fourth resistance is connected to the two ends of lithium battery.
The present invention also provides a kind of device of the multi-functional charge-discharge circuit composition based on above-mentioned, comprise controller unit, the LCD display, push-button unit and the USB that are connected with controller unit turn serial ports unit, described controller unit is connected with the input anode of the first operational amplifier and the input anode of the second operational amplifier of multi-functional charge-discharge circuit respectively, this device also comprises the power subsystem being connected with LCD display, controller unit and multi-functional charge-discharge circuit, and described multi-functional charge-discharge circuit is connected with lithium battery.
According to a preferred embodiment of the invention: also comprise shell, and be located at the printed circuit board (PCB) in shell, described power subsystem, controller unit, multi-functional charge-discharge circuit and USB turn serial ports unit and are all integrated on printed circuit board (PCB), described lithium battery is located at the inside of shell, and described LCD display and push-button unit are all located at the front of shell.
According to a preferred embodiment of the invention: also comprise anode interface, battery cathode interface, USB interface and the power interface be located on shell, described anode interface is connected with lithium battery with battery cathode interface, described USB interface turns serial ports unit with USB and is connected, and described power interface is connected with power subsystem.
According to a preferred embodiment of the invention: described power subsystem comprises the switching regulator IC and the linear voltage stabilization chip that connect successively, the output of described switching regulator IC is also connected with multi-functional charge-discharge circuit, and the output of described linear voltage stabilization chip is also connected with LCD display and controller unit.
According to a preferred embodiment of the invention: described controller unit is that model is the controller unit of STM32F407.
Compared with prior art, beneficial effect of the present invention is: the present invention has adopted charge-discharge circuit and the device based on digital-control constant-flow source technology, the size of current discharging and recharging can be conveniently set, be applicable to the cell of various amount of capacity, charge-discharge circuit can gather charging/discharging voltage and current data simultaneously, in LCD display, show in real time charge-discharge characteristic curve, and charging and discharging currents can be calculated to battery capacity to time integral, also can be by battery charging/discharging characteristic curve transmission to Computer display or preservation.
Accompanying drawing explanation
Fig. 1. be the circuit diagram of multi-functional charge-discharge circuit of the present invention.
Fig. 2. be the structural representation of the device of multi-functional charge-discharge circuit composition of the present invention.
Fig. 3. be the structured flowchart of the device of multi-functional charge-discharge circuit composition of the present invention.
Fig. 4. be the circuit diagram of power subsystem in the device of multi-functional charge-discharge circuit composition of the present invention.
Fig. 5. be the circuit diagram of the device middle controller unit of multi-functional charge-discharge circuit composition of the present invention.
Description of reference numerals: 1, shell, 2, LCD display, 3, push-button unit, 4, anode interface, 5, battery cathode interface, 6.USB interface, 7, power interface, 8, printed circuit board (PCB), 9, power subsystem, 10, controller unit, 11, multi-functional charge-discharge circuit, 12, lithium battery, 13, USB turns serial ports unit.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Consult shown in Fig. 1, the invention provides a kind of multi-functional charge-discharge circuit, for battery is discharged and recharged, this charge-discharge circuit 11 comprises charging circuit digital-control constant-flow source, discharge circuit digital-control constant-flow source and battery voltage supervisory circuit, described charging circuit digital-control constant-flow source comprises the first operational amplifier A 1, the first Darlington transistor J1, the first resistance R 1, the first inductance L 1 and the 5th resistance R 5, the output of described the first operational amplifier A 1 is connected with the transistor base before the first Darlington transistor J1 through the first resistance R 1, the input cathode of the first operational amplifier A 1 is through the 5th resistance R 5 ground connection, the first Darlington transistor J1 transistor emitter is below connected with the first inductance L 1, and described battery voltage supervisory circuit is connected between the first inductance L 1 and the 5th resistance R 5, described discharge circuit digital-control constant-flow source comprises the second operational amplifier A 2, the second Darlington transistor J2, the second resistance R 2, the second inductance L 2 and the 6th resistance R 6, the output of described the second operational amplifier A 2 is connected with the transistor base before the second Darlington transistor J2 through the second resistance R 2, the input cathode of the second operational amplifier A 2 is connected with the 5th resistance R 5 through the 6th resistance R 6, the second Darlington transistor J2 triode emitter is below connected with the 6th resistance R 6 through the second inductance L 2, transistor collector before the second Darlington transistor J2 is connected with the first inductance L 1 after being connected with transistor collector below, described battery voltage supervisory circuit is also connected to the two ends of battery.
Battery voltage supervisory circuit in the present invention comprises the third and fourth resistance (R3, R4), described the 3rd resistance R 3 one end are connected with the first inductance L 1, the other end is connected with the 5th resistance R 5 through the 4th resistance R 4, described the third and fourth resistance (R3, R4) is connected to the two ends of battery.
Wherein, the input anode DA2 of the input anode DA1 of the first operational amplifier A 1 and the second operational amplifier A 2 is the digital-to-analogue conversion output of outside controller unit 10, when DA2 voltage is zero, and can be by DA1 magnitude of voltage control charging current; When DA1 voltage is zero, can, by DA2 magnitude of voltage controlled discharge size of current, by ADO magnitude of voltage, through converting, can obtain actual charge current size simultaneously, by AD2 magnitude of voltage, through converting, can obtain actual discharge size of current, by AD1
The difference of magnitude of voltage and ADO magnitude of voltage can convert and obtain actual cell voltage size, realized the size of real-time control charging and discharging currents, and Real-Time Monitoring charging and discharging currents and battery voltage value, the charging and discharging currents of Real-time Collection and voltage data, can be used for drawing charge-discharge characteristic curve, charging and discharging currents can be calculated to battery capacity to time integral.
Consult shown in Fig. 2 and Fig. 3, the device that the present invention also provides a kind of multi-functional charge-discharge circuit 11 based on above-mentioned to form, comprise controller unit 1O, the LCD display 2 being connected with controller unit 1O, push-button unit 3 and USB turn serial ports unit 13, described controller unit 1O is connected with the input anode of the first operational amplifier A 1 and the input anode of the second operational amplifier A 2 of multi-functional charge-discharge circuit 11 respectively, this device also comprises and LCD display 2, the power subsystem 9 that controller unit 10 is connected with multi-functional charge-discharge circuit 11, described multi-functional charge-discharge circuit 11 is connected with lithium battery 12.
Concrete, device of the present invention also comprises shell 1, and be located at the printed circuit board (PCB) 8 in shell 1, power subsystem 9, controller unit 10, multi-functional charge-discharge circuit 11 and USB turn serial ports unit 13 and are all integrated on printed circuit board (PCB) 8, lithium battery 12 is located at the inside of shell 1, and LCD display 2 and push-button unit 3 are all located at the front of shell 1.And this device also comprises anode interface 4, battery cathode interface 5, USB interface 6 and the power interface 7 be located on shell 1, anode interface 4 is connected with lithium battery 12 with battery cathode interface 5, USB interface 6 turns serial ports unit 13 with USB and is connected, and power interface 7 is connected with power subsystem 9.
Wherein, power subsystem 9 provides power supply for LCD display 2, controller unit 1O and multi-functional charge-discharge circuit 11, and controller unit 1O connects LCD display 2, and export control signal, control the demonstration information of LCD display 2, controller unit 10 connects multi-functional charge-discharge circuit 11 (namely DA1 and DA2), obtain voltage and the charging and discharging currents information of lithium battery 12 and export the charging and discharging currents size of the multi-functional charge-discharge circuit 11 of control signal control, controller unit 10 connects push-button unit 3, be used for obtaining key information, complete the setting of charging and discharging currents, and connecting USB, controller unit 10 turns serial ports unit 13, can realize and the charge-discharge characteristic curve data of lithium battery 12 is sent to computer check or preserve (shown in Fig. 5).
Consult shown in Fig. 4, power subsystem 9 in the present invention comprises the switching regulator IC and the linear voltage stabilization chip that connect successively, wherein, the output of switching regulator IC is also connected with multi-functional charge-discharge circuit 11, namely, input DC power provides power supply to multi-functional charge-discharge circuit 11 through switching regulator IC (model is LM2596) voltage stabilizing to 9V, and the output of linear voltage stabilization chip is also connected with LCD display 2 and controller unit 10.Be about to provides power supply to controller unit 10 and LCD display 2 through linear voltage stabilization chip (model is LM7805) voltage stabilizing again through switching regulator IC voltage stabilizing to the voltage of 9V to 5V.
In preferred version in the present invention, consult shown in Fig. 5, the model that controller unit 10 adopts is STM32F407, certainly, also can select as required other model and does not affect enforcement of the present invention.
Visible by above description, the device of multi-functional charge-discharge circuit of the present invention and composition thereof is owing to having adopted digital-control constant-flow source as charge-discharge circuit, charging and discharging currents size can be conveniently set, be applicable to the cell of various amount of capacity, and in LCD display, show in real time charge-discharge characteristic curve, after having discharged and recharged, can calculate battery total capacity, simultaneously also can be by battery charging/discharging characteristic curve transmission to Computer display or preservation.
Above-described embodiment is preferably execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (7)
1. a multi-functional charge-discharge circuit, for lithium battery (12) is discharged and recharged, is characterized in that: this charge-discharge circuit (11) comprises charging circuit digital-control constant-flow source, discharge circuit digital-control constant-flow source and battery voltage supervisory circuit, described charging circuit digital-control constant-flow source comprises the first operational amplifier (A1), the first Darlington transistor (J1), the first resistance (R1), the first inductance (L1) and the 5th resistance (R5), the output of described the first operational amplifier (A1) is connected with the first Darlington transistor (J1) transistor base above through the first resistance (R1), the input cathode of the first operational amplifier (A1) is through the 5th resistance (R5) ground connection, the first Darlington transistor (J1) transistor emitter is below connected with the first inductance (L1), described battery voltage supervisory circuit is connected between the first inductance (L1) and the 5th resistance (R5), described discharge circuit digital-control constant-flow source comprises the second operational amplifier (A2), the second Darlington transistor (J2), the second resistance (R2), the second inductance (L2) and the 6th resistance (R6), the output of described the second operational amplifier (A2) is connected with the second Darlington transistor (J2) transistor base above through the second resistance (R2), the input cathode of the second operational amplifier (A2) is connected with the 5th resistance (R5) through the 6th resistance (R6), the second Darlington transistor (J2) triode emitter is below connected with the 6th resistance (R6) through the second inductance (L2), the second Darlington transistor (J2) transistor collector is above connected with the first inductance (L1) after being connected with transistor collector below, described battery voltage supervisory circuit is also connected to the two ends of lithium battery (12).
2. multi-functional charge-discharge circuit according to claim 1, it is characterized in that: described battery voltage supervisory circuit comprises the third and fourth resistance (R3, R4), described the 3rd resistance (R3) one end is connected with the first inductance (L1), the other end is connected with the 5th resistance (R5) through the 4th resistance (R4), described the third and fourth resistance (R3, R4) is connected to the two ends of lithium battery.
3. the device of the composition of the multi-functional charge-discharge circuit (11) based on described in claim 1 or 2, it is characterized in that: comprise controller unit (10), the LCD display (2) being connected with controller unit (1O), push-button unit (3) and USB turn serial ports unit (13), described controller unit (1O) is connected with the input anode of the first operational amplifier (A1) and the input anode of the second operational amplifier (A2) of multi-functional charge-discharge circuit (11) respectively, this device also comprises and LCD display (2), the power subsystem (9) that controller unit (10) is connected with multi-functional charge-discharge circuit (11), described multi-functional charge-discharge circuit (11) is connected with lithium battery (12).
4. multi-functional charge and discharge device according to claim 3, it is characterized in that: also comprise shell (1), and be located at the printed circuit board (PCB) (8) in shell (1), described power subsystem (9), controller unit (1O), multi-functional charge-discharge circuit (11) and USB turn serial ports unit (13) and are all integrated on printed circuit board (PCB) (8), described lithium battery (12) is located at the inside of shell (1), and described LCD display (2) and push-button unit (3) are all located at the front of shell (1).
5. multi-functional charge and discharge device according to claim 4, it is characterized in that: also comprise anode interface (4), battery cathode interface (5), USB interface (6) and the power interface (7) be located on shell (1), described anode interface (4) is connected with lithium battery (12) with battery cathode interface (5), described USB interface (6) turns serial ports unit (13) with USB and is connected, and described power interface (7) is connected with power subsystem (9).
6. multi-functional charge and discharge device according to claim 3, it is characterized in that: described power subsystem (9) comprises the switching regulator IC and the linear voltage stabilization chip that connect successively, the output of described switching regulator IC is also connected with multi-functional charge-discharge circuit (11), and the output of described linear voltage stabilization chip is also connected with LCD display (2) and controller unit (1O).
7. multi-functional charge and discharge device according to claim 3, is characterized in that: described controller unit (1O) is that model is the controller unit of STM32F407.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410033435.6A CN103746433B (en) | 2014-01-24 | 2014-01-24 | The device of multi-functional charge-discharge circuit and composition thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410033435.6A CN103746433B (en) | 2014-01-24 | 2014-01-24 | The device of multi-functional charge-discharge circuit and composition thereof |
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| CN103746433A true CN103746433A (en) | 2014-04-23 |
| CN103746433B CN103746433B (en) | 2016-01-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092251A (en) * | 2014-06-16 | 2014-10-08 | 叶林松 | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer |
| CN105319514A (en) * | 2015-11-16 | 2016-02-10 | 三峡大学 | An accumulator capacity detection method |
| CN105629176A (en) * | 2015-12-30 | 2016-06-01 | 上海与德通讯技术有限公司 | Battery capacity test method, rechargeable battery charging circuit and electronic equipment |
| CN113013940A (en) * | 2021-02-20 | 2021-06-22 | 北京银冈科技有限公司 | System for calculating battery capacity by using protection board and charger |
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| JPH07128418A (en) * | 1993-11-05 | 1995-05-19 | Shindengen Electric Mfg Co Ltd | Constant a.c. charge/discharge circuit of battery and battery test device with it |
| CN201178322Y (en) * | 2008-04-14 | 2009-01-07 | 河北科技大学 | Intelligent charger for novel digital controlled accumulator |
| CN202720321U (en) * | 2012-08-03 | 2013-02-06 | 惠州市蓝微电子有限公司 | Voltage detection circuit of high-string number lithium battery pack and battery pack protection circuit applying the same |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07128418A (en) * | 1993-11-05 | 1995-05-19 | Shindengen Electric Mfg Co Ltd | Constant a.c. charge/discharge circuit of battery and battery test device with it |
| CN201178322Y (en) * | 2008-04-14 | 2009-01-07 | 河北科技大学 | Intelligent charger for novel digital controlled accumulator |
| CN202720321U (en) * | 2012-08-03 | 2013-02-06 | 惠州市蓝微电子有限公司 | Voltage detection circuit of high-string number lithium battery pack and battery pack protection circuit applying the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092251A (en) * | 2014-06-16 | 2014-10-08 | 叶林松 | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer |
| CN105319514A (en) * | 2015-11-16 | 2016-02-10 | 三峡大学 | An accumulator capacity detection method |
| CN105629176A (en) * | 2015-12-30 | 2016-06-01 | 上海与德通讯技术有限公司 | Battery capacity test method, rechargeable battery charging circuit and electronic equipment |
| CN113013940A (en) * | 2021-02-20 | 2021-06-22 | 北京银冈科技有限公司 | System for calculating battery capacity by using protection board and charger |
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| CN103746433B (en) | 2016-01-20 |
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