CN105576770A - Digital lithium battery charging and discharging device - Google Patents
Digital lithium battery charging and discharging device Download PDFInfo
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- CN105576770A CN105576770A CN201610107618.7A CN201610107618A CN105576770A CN 105576770 A CN105576770 A CN 105576770A CN 201610107618 A CN201610107618 A CN 201610107618A CN 105576770 A CN105576770 A CN 105576770A
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- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- 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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- 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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- 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
- H02J7/00304—Overcurrent protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a digital lithium battery charging and discharging device, which comprises a charging and discharging circuit hardware main body module, a charging and discharging control circuit module, a voltage and current detection circuit module, a keyboard input circuit module, a liquid crystal display circuit module, a switch module and an auxiliary power module, wherein the charging and discharging circuit hardware main body module is used for receiving signals of the charging and discharging control circuit module; the charging and discharging control circuit module is used for receiving signals outputted by the voltage and current detection circuit module and signals outputted by the keyboard input circuit module; the voltage and current detection circuit module is used for receiving voltage and current of the charging and discharging circuit hardware main body module; the keyboard input circuit module is used for sending a signal generated by a manual key to the charging and discharging control circuit module; and the switch module is used for receiving signals generated by the charging and discharging control circuit module. Automatic charging and automatic discharging of the lithium battery can be realized; the system efficiency is higher; and the man-machine interaction is good.
Description
Technical field
The invention belongs to design of electronic circuits and Single-chip Controlling field, be specifically related to digital charging and discharging lithium battery device.
Background technology
The charging device of lithium battery is more on the market, but to have the device filling, put a function concurrently few simultaneously.With regard to lithium battery charger, general viewpoint lithium battery has memory effect unlike nickel, hydrogen, nickel-cadmium cell, and do not need electric discharge, thus lithium battery charger does not mostly possess charge function, structural research also less.But the lithium battery actual efficiency generally to use four, five years can decline to some extent, if repeatedly circulated by " electric discharge one charging ", can actual capacity be improved, extend battery.Thus, be necessary to design a can with putting, the charger of Electricity Functional.On the market, few in number with in the lithium battery charger of discharging function, circuit mostly design comparatively complicated, function is also comparatively single, user uses interface also unfriendly.
Summary of the invention
Technical problem to be solved by this invention provides digital charging and discharging lithium battery device for above-mentioned the deficiencies in the prior art, and this digital charging and discharging lithium battery device improves battery actual capacity, extends battery; Automatically the charge and discharge realizing battery switch; Entire system is efficient, high accuracy; Friendly interactive function, brings convenience to the use of user.
For realizing above-mentioned technical purpose, the technical scheme that the present invention takes is: digital charging and discharging lithium battery device, comprises charge-discharge circuit hardware body module, charge-discharge control circuit module, voltage and current detection circuit module, input through keyboard circuit module, liquid crystal display circuit module, diverter switch module and auxiliary power module; Described charge-discharge circuit hardware body module, charge-discharge control circuit module, voltage and current detection circuit module, input through keyboard circuit module, liquid crystal display circuit module, connected mode between diverter switch module and auxiliary power module are electrical connection;
Described charge-discharge circuit hardware body module is for receiving the signal of described charge-discharge control circuit module; Described charge-discharge control circuit module for receive described voltage and current detection circuit module export signal and input through keyboard circuit module export signal and send a signal to described charge-discharge circuit hardware body and LCD MODULE; Described voltage and current detection circuit module is for receiving the electric current and voltage of described charge-discharge circuit hardware body module and sending a signal to described charge-discharge control circuit module; The signal that described input through keyboard circuit module is used for manual key produces sends to described charge-discharge control circuit module; The content that described liquid crystal display circuit module sends for showing described charge-discharge control circuit module; Described diverter switch module for receive described charge-discharge control circuit module produce signal and the access of realizing circuit and disconnection; Described auxiliary power module is used for providing power supply for described charge-discharge circuit hardware body module, charge-discharge control circuit module and voltage and current detection circuit module.
As further improved technical scheme of the present invention, described charge-discharge control circuit module adopts ArduinoNano single-chip microcomputer.
As further improved technical scheme of the present invention, described charge-discharge circuit hardware body module comprises PWM drive circuit and boost-buck main body circuit, PWM drive circuit adopts two chip I R2104S_1 and IR2104S_2, chip I R2104S_1 is for receiving the output signal P-2 of ArduinoNano one-chip machine port 24 and sending signal PWM-2, and chip I R2104S_2 is for receiving the output signal P-1 of ArduinoNano one-chip machine port 23 and sending signal PWM-1, described boost-buck main body circuit is made up of S1 switching tube IRF3205, S2 switching tube IRF3205, three electric capacity C3_M, C2_M, C1_M, 380UH inductance, three diodes D1_M, D2_M, D3_M and relay PVG612S, 380UH inductance port one is connected with the positive pole of electric capacity C3_M, 380UH inductance port 2 is connected with the S pole of S1 switching tube and the D pole of S2 switching tube respectively, the D pole of S1 switching tube is connected with the positive pole of electric capacity C2_M, the negative pole of electric capacity C3_M, the S pole of S2 switching tube is all connected with ground wire with the negative pole of electric capacity C2_M, S1 switching tube is in parallel with diode D1_M, the S pole of S1 switching tube is connected with the positive pole of diode D1_M, the S pole of S1 switching tube is also connected with the port 6 of the chip I R2104S_2 in PWM drive circuit, the D pole of S1 switching tube is connected with the negative pole of diode D1_M, S2 switching tube is in parallel with diode D2_M, the S pole of S2 switching tube is connected with the positive pole of diode D2_M, the D pole of S2 switching tube is connected with the negative pole of diode D2_M, electric capacity C2_M is in parallel with electric capacity C1_M, electric capacity C2_M positive pole is connected with electric capacity C1_M positive pole, electric capacity C2_M negative pole is connected with electric capacity C1_M negative pole, the PU_1 end of relay PVG612S is connected with the negative pole of diode D3_M, the PU_2 end of relay PVG612S is connected with the positive pole of diode D3_M, the G pole of S1 switching tube is for receiving the signal PWM-1 from PWM drive circuit, and the G pole of S2 switching tube is for receiving the signal PWM-2 from PWM drive circuit.
As further improved technical scheme of the present invention, described voltage and current detection circuit module comprises the first voltage detector, second voltage detector and current detector, described first voltage detector and the second voltage detector all adopt Hall voltage transducer TBV10/25A, described current detector adopts Hall current sensor TBC05LX, described first voltage detector port 5 is connected with diode D3_M positive pole, described first voltage detector port 4 is connected with electric capacity C3_M negative pole, described first voltage detector port 3 is connected with the port 5 of ArduinoNano single-chip microcomputer, described second voltage detector port 5 is connected with electric capacity C1_M positive pole, and described second voltage detector port 4 is connected with electric capacity C1_M negative pole, and described second voltage detector port 3 is connected with the port 4 of ArduinoNano single-chip microcomputer, described current detector port 6 is connected with diode D3_M positive pole, and described current detector port 5 is connected with 380UH inductance port one, and described current detector port 3 is connected with the port 6 of ArduinoNano single-chip microcomputer.
As further improved technical scheme of the present invention, described input through keyboard circuit module comprises keyboard row's pin and keyboard K1 to K16, wherein one end of keyboard K1 to K4 is connected to each other to keyboard row pin port 5, wherein one end of keyboard K5 to K8 is connected to each other to keyboard row pin port 6, wherein one end that wherein one end of keyboard K9 to K12 is connected to each other to keyboard row pin port 7, keyboard K13 to K16 is connected to each other to keyboard row pin port 8, keyboard K1, K5, other one end of K9 and K13 is connected to each other to keyboard row pin port one, keyboard K2, K6, other one end of K10 and K14 is connected to each other, keyboard K3, K7, other one end of K11 and K15 is connected to each other to keyboard row pin port 3, keyboard K4, K8, other one end of K12 and K16 is connected to each other to keyboard row pin port 4, keyboard row pin port one is connected with the port 21 of ArduinoNano single-chip microcomputer, keyboard row pin port 2 is connected with the port 22 of ArduinoNano single-chip microcomputer, keyboard row pin port 3 is connected with the port 25 of ArduinoNano single-chip microcomputer, keyboard row pin port 4 is connected with the port 26 of ArduinoNano single-chip microcomputer, keyboard row pin port 5 is connected with the port 27 of ArduinoNano single-chip microcomputer, keyboard row pin port 6 is connected with the port 28 of ArduinoNano single-chip microcomputer, keyboard row pin port 7 is connected with the port 29 of ArduinoNano single-chip microcomputer, keyboard row pin port 8 is connected with the port 30 of ArduinoNano single-chip microcomputer.
The present invention is with Chip Microcomputer A rduinoNano for control device, can realize the automatic charge and discharge of lithium battery; High-precision voltage, Current Control and protection can be realized; The high efficiency of system can be realized; Good man-machine interaction can be had; The useful life of battery can be increased substantially.
Accompanying drawing explanation
Fig. 1 is circuit integrity structure chart of the present invention.
Fig. 2 is the circuit theory schematic diagram of boost-buck main body circuit of the present invention.
Fig. 3 is the circuit theory schematic diagram of PWM drive circuit of the present invention.
Fig. 4 is the circuit theory schematic diagram of diverter switch module of the present invention.
Fig. 5 is the circuit theory schematic diagram of voltage and current detection circuit module of the present invention.
Fig. 6 is the circuit theory schematic diagram of input through keyboard circuit module of the present invention.
Fig. 7 is the circuit theory schematic diagram of charge-discharge control circuit module of the present invention.
Fig. 8 is the circuit theory schematic diagram of liquid crystal display circuit module of the present invention.
Fig. 9 is the circuit theory schematic diagram of auxiliary power module of the present invention.
Embodiment
embodiment 1
Further illustrate below in conjunction with accompanying drawing 1 to 9 pair of the specific embodiment of the present invention:
See Fig. 1 to Fig. 9, the present invention is digital charging and discharging lithium battery device, and operation principle is by microprocessor detect effective information, realizes the automatic switchover of charging, discharging electric batteries state, and the external device of providing convenience, be user-friendly to; Digital charging and discharging lithium battery device, comprises charge-discharge circuit hardware body module, charge-discharge control circuit module, voltage and current detection circuit module, input through keyboard circuit module, liquid crystal display circuit module, diverter switch module and auxiliary power module; Charge-discharge circuit hardware body module, charge-discharge control circuit module, voltage and current detection circuit module, input through keyboard circuit module, liquid crystal display circuit module, connected mode between diverter switch module and auxiliary power module are electrical connection; Charge-discharge circuit hardware body module is for receiving the signal of described charge-discharge control circuit module and then realizing the effect of charging, electric discharge; Charge-discharge control circuit module be used for receiver voltage current detection circuit module export signal and input through keyboard circuit module export signal and send a signal to described charge-discharge circuit hardware body and LCD MODULE; Voltage and current detection circuit module is for receiving the electric current and voltage of described charge-discharge circuit hardware body module and sending a signal to charge-discharge control circuit module; The signal that input through keyboard circuit module is used for manual key produces sends to charge-discharge control circuit module; The content that liquid crystal display circuit module sends for showing charge-discharge control circuit module; Diverter switch module for receive described charge-discharge control circuit module produce signal and the access of realizing circuit and disconnection; Auxiliary power module is used for providing power supply for charge-discharge circuit hardware body module, charge-discharge control circuit module and voltage and current detection circuit module.
Further, described charge-discharge control circuit module adopts ArduinoNano single-chip microcomputer; Described charge-discharge circuit hardware body module comprises PWM drive circuit and boost-buck main body circuit.
See Fig. 2 and Fig. 3, described charge-discharge circuit hardware body module comprises PWM drive circuit and boost-buck main body circuit, PWM drive circuit adopts two chip I R2104S_1 and IR2104S_2, chip I R2104S_1 is for receiving the output signal P-2 of ArduinoNano one-chip machine port 24 and sending signal PWM-2, and chip I R2104S_2 is for receiving the output signal P-1 of ArduinoNano one-chip machine port 23 and sending signal PWM-1, described boost-buck main body circuit is made up of S1 switching tube IRF3205, S2 switching tube IRF3205, three electric capacity C3_M, C2_M, C1_M, 380UH inductance, three diodes D1_M, D2_M, D3_M and relay PVG612S, 380UH inductance port one is connected with the positive pole of electric capacity C3_M, 380UH inductance port 2 is connected with the S pole of S1 switching tube and the D pole of S2 switching tube respectively, the D pole of S1 switching tube is connected with the positive pole of electric capacity C2_M, the negative pole of electric capacity C3_M, the S pole of S2 switching tube is all connected with ground wire with the negative pole of electric capacity C2_M, S1 switching tube is in parallel with diode D1_M, the S pole of S1 switching tube is connected with the positive pole of diode D1_M, the S pole of S1 switching tube is also connected with the port 6 of the chip I R2104S_2 in PWM drive circuit, the D pole of S1 switching tube is connected with the negative pole of diode D1_M, S2 switching tube is in parallel with diode D2_M, the S pole of S2 switching tube is connected with the positive pole of diode D2_M, the D pole of S2 switching tube is connected with the negative pole of diode D2_M, electric capacity C2_M is in parallel with electric capacity C1_M, electric capacity C2_M positive pole is connected with electric capacity C1_M positive pole, electric capacity C2_M negative pole is connected with electric capacity C1_M negative pole, the PU_1 end of relay PVG612S is connected with the negative pole of diode D3_M, the PU_2 end of relay PVG612S is connected with the positive pole of diode D3_M, the G pole of S1 switching tube is for receiving the signal PWM-1 from PWM drive circuit, and the G pole of S2 switching tube is for receiving the signal PWM-2 from PWM drive circuit, when battery charges, relay PVG612S disconnects, diode D3_M conducting in parallel, and battery reliably charges, and when the cell is discharged, relay PVG612S closes, and diode D3_M short circuit in parallel, battery reliably discharges.
See Fig. 4, switching switch circuit adopts three chip PVG612S, first chip PVG612S accepts the signal RL from ArduinoNano one-chip machine port 9, second chip PVG612S accepts the signal PU1 from ArduinoNano one-chip machine port 11, 3rd chip PVG612S accepts the signal PU2 from ArduinoNano one-chip machine port 10, thus realize RL_1 and RL_2 in charge-discharge circuit hardware body, PU_1 and PU_2, connection between PU2_1 and PU2_2 and disconnection, and then realize diode D3_M as shown in Figure 2 whether place in circuit, load whether place in circuit, direct-flow voltage regulation source whether place in circuit.Guarantee is provided for device can realize multiple-working mode.
See Fig. 5, described voltage and current detection circuit module comprises the first voltage detector, the second voltage detector and current detector, described first voltage detector and the second voltage detector all adopt Hall voltage transducer TBV10/25A, described current detector adopts Hall current sensor TBC05LX, described first voltage detector port 5 is connected with diode D3_M positive pole, described first voltage detector port 4 is connected with electric capacity C3_M negative pole, and described first voltage detector port 3 is connected with the port 5 of ArduinoNano single-chip microcomputer; Described second voltage detector port 5 is connected with electric capacity C1_M positive pole, and described second voltage detector port 4 is connected with electric capacity C1_M negative pole, and described second voltage detector port 3 is connected with the port 4 of ArduinoNano single-chip microcomputer; Described current detector port 6 is connected with diode D3_M positive pole, and described current detector port 5 is connected with 380UH inductance port one, and described current detector port 3 is connected with the port 6 of ArduinoNano single-chip microcomputer.Described voltage and current detection circuit module accepts the voltage and current of charge-discharge circuit hardware body module and signal VD2, VD1, CD1 of being exported send to the input of ArduinoNano single-chip microcomputer.
See Fig. 6, described input through keyboard circuit module comprises keyboard row's pin and keyboard K1 to K16, wherein one end of keyboard K1 to K4 is connected to each other to keyboard row pin port 5, wherein one end of keyboard K5 to K8 is connected to each other to keyboard row pin port 6, wherein one end that wherein one end of keyboard K9 to K12 is connected to each other to keyboard row pin port 7, keyboard K13 to K16 is connected to each other to keyboard row pin port 8, keyboard K1, K5, other one end of K9 and K13 is connected to each other to keyboard row pin port one, keyboard K2, K6, other one end of K10 and K14 is connected to each other, keyboard K3, K7, other one end of K11 and K15 is connected to each other to keyboard row pin port 3, keyboard K4, K8, other one end of K12 and K16 is connected to each other to keyboard row pin port 4, keyboard row pin port one is connected with the port 21 of ArduinoNano single-chip microcomputer, keyboard row pin port 2 is connected with the port 22 of ArduinoNano single-chip microcomputer, keyboard row pin port 3 is connected with the port 25 of ArduinoNano single-chip microcomputer, keyboard row pin port 4 is connected with the port 26 of ArduinoNano single-chip microcomputer, keyboard row pin port 5 is connected with the port 27 of ArduinoNano single-chip microcomputer, keyboard row pin port 6 is connected with the port 28 of ArduinoNano single-chip microcomputer, keyboard row pin port 7 is connected with the port 29 of ArduinoNano single-chip microcomputer, keyboard row pin port 8 is connected with the port 30 of ArduinoNano single-chip microcomputer.Described input through keyboard circuit module adopts the mode of manual key, and signal I03, I04, I07, I08, I09, I010, I011, I012 that input through keyboard circuit module is produced deliver to the input of described ArduinoNano single-chip microcomputer.Described ArduinoNano single-chip microcomputer, according to different buttons, produces different control effects.
See Fig. 7, described charge-discharge control circuit module accepts the signal VD2 from described voltage and current detection circuit module, VD1, the output signal I03 of CD1 and described input through keyboard circuit module, I04, I07, I08, I09, I010, I011, I012, described charge-discharge control circuit module is according to different control objectives, export determination device state respectively and comprise whether overvoltage, the control signal PWM-1 of overcurrent protection and PWM-2, decision relay leads to, disconnected control signal RL, PU1, the control signal I00 of PU2 and decision liquid-crystal display information, I01, I02, I013.
Overvoltage, current foldback circuit are nested in charge-discharge control circuit module as shown in Figure 7, can improve the useful life of device and battery.The voltage VD2 at the battery two ends that charge-discharge control circuit module detects according to voltage detector as shown in Figure 5, current detector detect that the input value of the current CD 1 that flows through battery and input through keyboard circuit module as shown in Figure 6 determines whether the duty ratio of single-chip microcomputer output signal PWM-1 and PWM-2 is zero jointly, thus whether implement device is in off state namely realizes overvoltage, overcurrent protection.
See Fig. 8, liquid crystal display circuit module comprises the naked screen of OLED liquid crystal display and OLED external connection row pin, the port one of the naked screen of OLED liquid crystal display, port 8, port one 0, port one 1, port one 2, port one 3, port one 6, port one 7, port 29, port 30 all connects ground wire, the port 6 of the naked screen of OLED liquid crystal display, port 9 all connects the port 5 of OLED external connection row pin, the port one 4 contact resistance R9 successively of the naked screen of OLED liquid crystal display, the port 5 of OLED external connection row pin, the port one 8 contact resistance R7 successively of the naked screen of OLED liquid crystal display, the port 5 of OLED external connection row pin, the port one 9 contact resistance R8 successively of the naked screen of OLED liquid crystal display, the port 5 of OLED external connection row pin, the port 26 contact resistance R10 successively of the naked screen of OLED liquid crystal display, ground wire, the port 27 of the naked screen of OLED liquid crystal display connects electric capacity C27 successively, ground wire, the port 28 of the naked screen of OLED liquid crystal display connects electric capacity C30 successively, ground wire.OLED external connection row pin port one accepts the signal IO0 from ArduinoNano one-chip machine port 16, OLED external connection row pin port 2 accepts the signal IO1 from ArduinoNano one-chip machine port 17, OLED external connection row pin port 3 accepts the signal IO2 from ArduinoNano one-chip machine port 20, and OLED external connection row pin port 4 accepts the signal IO13 from ArduinoNano one-chip machine port 1.
See Fig. 9, the positive 5V of power supply of the positive and negative 12V of power supply of auxiliary power module supply current/voltage detection module, power supply positive 12V and the ArduinoNano single-chip microcomputer of PWM drive circuit, auxiliary power module also can provide the DC power supply of 21V, is user-friendly to.
DC power supply can be the charging DC power supply provided for oneself, and this device leaves corresponding port simultaneously, the DC power supply charging of 21V, 12V, the 5V as shown in Figure 9 that this device also can be adopted built-in, but now, the quantity of the lithium battery of charging is restricted.
The present invention has three kinds of mode of operations, and the selection of its pattern is determined by keyboard.
Pattern 1: charge mode
Step 1:
Keyboard selects numerical key, and Single-chip Controlling PU2_1, PU2_2 conducting as shown in Figure 2, RL_1, RL_2 disconnection, PU_1, PU_2 disconnect.Battery, DC power supply place in circuit, load disconnects, and device is in charged state.
Step 2:
Single-chip microcomputer reads the value of current sensor in real time, realizes constant current charge, and synchronous reading battery both end voltage value, if voltage, size of current exceed set point, can realize over-charge protective.Liquid crystal shows each numerical value and circuit state in real time.
Step 3:
Current value size when arranging constant current charge by keyboard, maximum upper limit can reach 2A.
Step 4:
The upper limit of cell voltage when charging by keyboard to set up.
Pattern 2: discharge mode
Step 1:
Keyboard selects numerical key, Single-chip Controlling PU2_1, PU2_2 disconnection as shown in Figure 2, RL_1, RL_2 conducting, PU_1, PU_2 conducting.Battery, load place in circuit, DC power supply disconnects, and device is in discharge condition.
Step 2:
The value of the voltage sensor at single-chip microcomputer real time load two ends, realizes constant voltage discharge, the electric current of synchronous reading flow through battery and the magnitude of voltage at two ends.Liquid crystal shows each numerical value and circuit state in real time.
Step 3:
The magnitude of voltage of constant voltage discharge can by keyboard to set up.
Mode 3: charge and discharge are automatically switched
Step 1:
Keyboard selects numeral, and Single-chip Controlling PU2_1, PU2_2 disconnection as shown in Figure 2, RL_1, RL_2 conducting, PU_1, PU_2 conducting switch according to circuit state real-time conduction and disconnection.Battery, load, DC power supply place in circuit.
Step 2:
Single-chip microcomputer reads the value of voltage, current sensor in real time, and when cell voltage is lower than load both end voltage, control circuit commutation circuit is charged state; When cell voltage is higher than load both end voltage, control circuit commutation circuit is discharge condition, no matter charges or discharge condition, remains that load both end voltage is constant.
Step 3:
The magnitude of voltage at load two ends can by keyboard to set up
Step 4:
When system is in charged state, can realize over-charge protective, the magnitude of voltage of over-charge protective can by keyboard to set up.
Step 5:
The each numerical value of liquid crystal display and circuit state.
Claims (5)
1. digital charging and discharging lithium battery device, is characterized in that: comprise charge-discharge circuit hardware body module, charge-discharge control circuit module, voltage and current detection circuit module, input through keyboard circuit module, liquid crystal display circuit module, diverter switch module and auxiliary power module; Described charge-discharge circuit hardware body module, charge-discharge control circuit module, voltage and current detection circuit module, input through keyboard circuit module, liquid crystal display circuit module, connected mode between diverter switch module and auxiliary power module are electrical connection;
Described charge-discharge circuit hardware body module is for receiving the signal of described charge-discharge control circuit module; Described charge-discharge control circuit module for receive described voltage and current detection circuit module export signal and input through keyboard circuit module export signal and send a signal to described charge-discharge circuit hardware body and LCD MODULE; Described voltage and current detection circuit module is for receiving the electric current and voltage of described charge-discharge circuit hardware body module and sending a signal to described charge-discharge control circuit module; The signal that described input through keyboard circuit module is used for manual key produces sends to described charge-discharge control circuit module; The content that described liquid crystal display circuit module sends for showing described charge-discharge control circuit module; Described diverter switch module for receive described charge-discharge control circuit module produce signal and the access of realizing circuit and disconnection; Described auxiliary power module is used for providing working power for described charge-discharge circuit hardware body module, charge-discharge control circuit module and voltage and current detection circuit module.
2. digital charging and discharging lithium battery device according to claim 1, is characterized in that: described charge-discharge control circuit module adopts ArduinoNano single-chip microcomputer.
3. digital charging and discharging lithium battery device according to claim 2, is characterized in that: described charge-discharge circuit hardware body module comprises PWM drive circuit and boost-buck main body circuit, PWM drive circuit adopts two chip I R2104S_1 and IR2104S_2, chip I R2104S_1 is for receiving the output signal P-2 of ArduinoNano one-chip machine port 24 and sending signal PWM-2, and chip I R2104S_2 is for receiving the output signal P-1 of ArduinoNano one-chip machine port 23 and sending signal PWM-1, described boost-buck main body circuit is made up of S1 switching tube IRF3205, S2 switching tube IRF3205, three electric capacity C3_M, C2_M, C1_M, 380UH inductance, three diodes D1_M, D2_M, D3_M and relay PVG612S, 380UH inductance port one is connected with the positive pole of electric capacity C3_M, 380UH inductance port 2 is connected with the S pole of S1 switching tube and the D pole of S2 switching tube respectively, the D pole of S1 switching tube is connected with the positive pole of electric capacity C2_M, the negative pole of electric capacity C3_M, the S pole of S2 switching tube is all connected with ground wire with the negative pole of electric capacity C2_M, S1 switching tube is in parallel with diode D1_M, the S pole of S1 switching tube is connected with the positive pole of diode D1_M, the S pole of S1 switching tube is also connected with the port 6 of the chip I R2104S_2 in PWM drive circuit, the D pole of S1 switching tube is connected with the negative pole of diode D1_M, S2 switching tube is in parallel with diode D2_M, the S pole of S2 switching tube is connected with the positive pole of diode D2_M, the D pole of S2 switching tube is connected with the negative pole of diode D2_M, electric capacity C2_M is in parallel with electric capacity C1_M, electric capacity C2_M positive pole is connected with electric capacity C1_M positive pole, electric capacity C2_M negative pole is connected with electric capacity C1_M negative pole, the PU_1 end of relay PVG612S is connected with the negative pole of diode D3_M, the PU_2 end of relay PVG612S is connected with the positive pole of diode D3_M, the G pole of S1 switching tube is for receiving the signal PWM-1 from PWM drive circuit, and the G pole of S2 switching tube is for receiving the signal PWM-2 from PWM drive circuit.
4. digital charging and discharging lithium battery device according to claim 3, it is characterized in that: described voltage and current detection circuit module comprises the first voltage detector, second voltage detector and current detector, described first voltage detector and the second voltage detector all adopt Hall voltage transducer TBV10/25A, described current detector adopts Hall current sensor TBC05LX, described first voltage detector port 5 is connected with diode D3_M positive pole, described first voltage detector port 4 is connected with electric capacity C3_M negative pole, described first voltage detector port 3 is connected with the port 5 of ArduinoNano single-chip microcomputer, described second voltage detector port 5 is connected with electric capacity C1_M positive pole, and described second voltage detector port 4 is connected with electric capacity C1_M negative pole, and described second voltage detector port 3 is connected with the port 4 of ArduinoNano single-chip microcomputer, described current detector port 6 is connected with diode D3_M positive pole, and described current detector port 5 is connected with 380UH inductance port one, and described current detector port 3 is connected with the port 6 of ArduinoNano single-chip microcomputer.
5. digital charging and discharging lithium battery device according to claim 4, it is characterized in that: described input through keyboard circuit module comprises keyboard row's pin and keyboard K1 to K16, wherein one end of keyboard K1 to K4 is connected to each other to keyboard row pin port 5, wherein one end of keyboard K5 to K8 is connected to each other to keyboard row pin port 6, wherein one end that wherein one end of keyboard K9 to K12 is connected to each other to keyboard row pin port 7, keyboard K13 to K16 is connected to each other to keyboard row pin port 8, keyboard K1, K5, other one end of K9 and K13 is connected to each other to keyboard row pin port one, keyboard K2, K6, other one end of K10 and K14 is connected to each other, keyboard K3, K7, other one end of K11 and K15 is connected to each other to keyboard row pin port 3, keyboard K4, K8, other one end of K12 and K16 is connected to each other to keyboard row pin port 4, keyboard row pin port one is connected with the port 21 of ArduinoNano single-chip microcomputer, keyboard row pin port 2 is connected with the port 22 of ArduinoNano single-chip microcomputer, keyboard row pin port 3 is connected with the port 25 of ArduinoNano single-chip microcomputer, keyboard row pin port 4 is connected with the port 26 of ArduinoNano single-chip microcomputer, keyboard row pin port 5 is connected with the port 27 of ArduinoNano single-chip microcomputer, keyboard row pin port 6 is connected with the port 28 of ArduinoNano single-chip microcomputer, keyboard row pin port 7 is connected with the port 29 of ArduinoNano single-chip microcomputer, keyboard row pin port 8 is connected with the port 30 of ArduinoNano single-chip microcomputer.
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| CN201610107618.7A CN105576770A (en) | 2016-02-26 | 2016-02-26 | Digital lithium battery charging and discharging device |
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Application publication date: 20160511 |