CN104638717A - Dual-temperature dual-control integrated circuit for mobile power supply and circuit control method - Google Patents
Dual-temperature dual-control integrated circuit for mobile power supply and circuit control method Download PDFInfo
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Abstract
The invention discloses a dual-temperature dual-control integrated circuit for a mobile power supply and a circuit control method. The dual-temperature dual-control integrated circuit comprises a controllable reference power supply part 1, an input amplifier part 2, a PI regulator 3, an error amplifier part 4, a comparator part 5, an electricity quantity detection control part 6, a digital logic processing part 7, a PWM (pulse-width modulation) supercharging conversion part 8 and a constant current charging part 9, wherein the functional pins include a VREF pin, a VCC pin, an IN pin, an IR pin, a GND pin, a PICI pin, an LEDV pin, a DCI pin, an OUT pin, an RT/CT pin, a TFO pin and a VFB pin; the functions include constant current charging, PWM supercharging, dual-temperature control detection, a zero power consumption standby, a synchronous charging and supplying and etc.; the unique functions include chip energy storage, zero power consumption standby, dual-temperature control function, five-level electricity quantity detection and protection, ambient temperature detection, battery temperature detection and over-temperature control protection; the electric quantity of the energy storage battery is not consumed during non-operating period, the safety of long-term storage and transportation is guaranteed; the dual-temperature dual-control integrated circuit for the mobile power supply and the circuit control method can be used for the products such as miniature energy storage equipment and mobile phone power supply.
Description
Affiliated field
Belong to the invention of portable power source technical field of integrated circuits.
Skill wood background
Portable power source is a collection accumulate, boosting, Charge Management is in the portable set of one, its basic structure is primarily of shell, motherboard circuit, energy-storage battery three parts assemble and form, energy-storage battery generally adopts lithium cell, its voltage is between 2.7-4.2V, obviously can not charge directly to other digital product, so portable power source outwards exports electric energy must have booster system, lithium piezoelectric voltage is boosted to 5V, as smart mobile phone, MP4, panel computer, PSP etc., but lithium battery is very sensitive to charging and discharging voltage, careless slightly meeting causes high temperature, high pressure, the accidents such as detonation, around this problem, people application of multiple technologies means makes existing portable power source possess short circuit, overcharge, cross and put, constant current, the safeguard measures such as constant voltage, its core circuit is primarily of lithium electricity charging chip, DC-DC boost chip, managing electric quantity chip is formed, although these chips also possess self overheat protection function, but because the temperature control do not possessed for the body of lithium battery is protected, electrical connection in addition owing to being only limitted to both positive and negative polarity between mainboard and lithium battery cannot realize function of temperature control and sensor interface, therefore there is many technological deficiencies, by retrieving patent family technology in a large number and dissecting existing product, so far not finding in portable power source can directly for the body temperature control remote detection of lithium battery and the double temperature double control integrated chip of protection and application example, and the overtemperature that the super-charge super-discharge that the potential safety hazard of portable power source derives from reason battery just causes, detonation risk, this potential safety hazard fully discloses the defect of prior art.
Summary of the invention
The invention discloses a kind of portable power source double temperature double control integrated circuit, the double temperature sensor temperature-sensitive control method of ambient temperature compared with monitor temperature is adopted to realize the discharge and recharge temperature of remote monitoring lithium battery, and then control portable power source main board work state, thus overcome the defect of prior art, improve the fail safe of product and assembly efficiency, energy-conserving and environment-protective.
Integrated circuit of the present invention mainly comprises 1 controlled reference power supply part, 2 input amplifier parts, 3PI adjuster, 4 error amplifier part, 5 comparator parts, 6 electric power detection control sections, 7 Digital Logic processing sections, 8PWM boost conversion part, 9 constant current charge parts form electrical connection (as shown in Figure 1), its body feature be the inner controlled reference power supply part 1 of this integrated circuit (IC) chip respectively with error amplifier part 4, comparator part 5 forms reference voltage electrical connection, be electrically connected by isolated controlling D0 and internal electrical source VCC simultaneously, also form with threshold controller DZ and be electrically connected, input amplifier part 2 respectively with error amplifier 4, pi regulator 3 forms amplifier electrical connection, error amplifier part 4 also realizes the electrical connection that voltage controlled duty ratio regulates and controls with PWM boost converter 8, comparator part 5 inputs and is electrically connected with controlled reference power supply part 1 and pi regulator 3, export and be electrically connected with Digital Logic processing section 7, electric power detection control section 6 connects and composes current/voltage check processing with controlled reference power supply part 1 and electric current I R respectively, under-voltage overvoltage protection is connected and composed with Digital Logic processing section 7, constant current charge part 9 is connected controlled formation constant-current charging circuit with Digital Logic processing section 7, and jointly form electrical connection by 12 pins, thus form integrated circuit of the present invention (as shown in Figure 2), its pin function is respectively cell voltage input pin VREF, energy storage source access pin VCC, sensing input pin IN, current detecting input pin IR, grounding leg GND, integral adjustment input pin PICI, battery capacity indication output pin LEDV, constant current charge input pin DCI, boosting output pin OUT, frequency input pin RT/CT, voltage-controlled output pin TFO, detect input pin VFB to form.
1 controlled reference power supply part of the present invention comprises the circuit such as active circuit K, threshold controller Dz, isolation controller D0, external energy storage source CC, constant current a reference source V-I and forms, it is characterized in that active circuit K is provided with self-starting activation voltage, control by threshold controller DZ on the one hand, it is integrated circuit that one tunnel connects and composes power circuit through isolation controller D0 and extraneous energy storage source CC, activation voltage is generally 2.2V-5V, the limit low pressure of ferric phosphate lithium cell can be adapted to, another road and constant current a reference source V-I connect and compose error amplifier A2, relatively a reference source of amplifying circuit A3 provides reference power source, it is comparatively suitable that reference voltage is generally set in 1.5V, when cell voltage is greater than more than 2.5V, active circuit K is automatically activated through isolation controller D0 energy storage source CC charging energy-storing to external world, simultaneously for integrated circuit provides power supply, set up the reference voltage of constant current a reference source V-I, in addition active circuit K also forms by threshold controller DZ the logic control function being connected and realizing starting and stop with operating state with Digital Logical Circuits N+D, this circuit structure solve circuit dormancy or under-voltage time power consumption problem, achieve zero energy consumption.
Input amplifier part 2 of the present invention is by differential amplifier A1, error amplifier part 4 forms electrical connection, it is characterized in that the external remote temperature sensor Rt of in-phase input end 1N, the output of error amplifier part 4 accesses as dynamic reference source by reverse input end, when the output dynamic electric voltage of homophase input voltage higher than A1 during reverse input voltage offsets to high potential, so that for next stage circuit provides comparative voltage, in fact constant current a reference source V-I and error amplifier A2 and remote temperature sensor Rt and amplifier input resistance constitute of input amplifier part 2 and input dynamic electric bridge network, this dynamic electric bridge network just provides the detection of remote temperature accurate just.
Pi regulator 3 of the present invention forms electrical connection by J-F treatment circuit, integrating capacitor Ci network, it is characterized in that employing second order noninertia proportional, integral PI regulates, threshold values compares track algorithm and controls, exporting high potential by input amplifier A1 encourages external integrating capacitor Ci to obtain integral curve point, realize proportion integral control device regulable control to the differentiation of input signal, its output voltage is supplied to the in-phase input end of voltage comparator A3 and follows the tracks of to compare with the constant current a reference source V-I reference voltage of inverting input and obtain high potential and export.
Error amplifier part 4 of the present invention is by voltage amplifier A2, follow-up amplifier A4 forms electrical connection, it is characterized in that voltage amplifier A2 is connected into in-phase amplifier, by input VFB, export TFO external-connected port and access local temperature sensor Dt and potential-divider network R1/R2, export termination follow-up amplifier A4, realize voltage follow and drive voltage-controlled impulse circuit, local temperature sensor Dt temperature often raises 1 DEG C of its forward voltage drop and reduces 2mV, voltage amplifier A2 in-phase input end meets reference voltage V-I and exports, inverting input is jointing temp transducer Dt then, form a voltage drop at inverting input simultaneously, so local variations in temperature will cause the change of inverting input voltage drop, thus cause voltage amplifier A2 output end voltage change, this change in voltage also superposes with potential-divider network, realize temperature and voltage detecting and export the dual-use function controlled.
Comparator part 5 of the present invention forms electrical connection by electric current and voltage dual comparator A3, it is characterized in that voltage, output that current comparator inverting input is connected to 1 controlled reference power supply forms reference voltage, the output that in-phase input end is connected to integrator 3 is formed, the inspection leakage resistance Ri that current comparator homophase termination IR holds forms electrical connection, the height of adjustment reference voltage determines a fixing height starting to control point voltage, namely overtemperature point, same current comparator also just obtains an overcurrent and starts to control a little.
Electric power detection control section 6 of the present invention is by variable voltage amplifier A5, electric current and voltage weighting processor V+I forms electrical connection, it is characterized in that the voltage of variable voltage amplifier A5 takes from controlled reference power supply part 1, and electric current takes from RI by external-connected port IR, and on weighting processor V+I, be weighted process acquisition overvoltage, under-voltage, overcurrent triggering signal and battery capacity indication signal, overvoltage, under-voltage, over-current signal one tunnel access Digital Logical Circuits part 7 realizes over-and under-voltage overcurrent protection, external-connected port LEDV of separately leading up to exports the work of driving LED 1-5 indicating circuit, a grade is improve than traditional level Four electricity display precision, therefore the overvoltage obtained, under-voltage, overcurrent protection is more accurate.
Digital Logic processing section 7 of the present invention by delay pulse processor Y-C, the logic gates that steady state trigger N+D both comprised can be repeated form electrical connection, it is characterized in that the activation signal of circuit is as the activation voltage that energy storage source CC obtains, state transition signals comes as the puncture voltage on DW, and temperature signal carrys out the electric pulse as voltage comparator A3, the positive pulse trigger internal steady state trigger action that wherein after delayed burst process, acquisition one is clean, trigger exports control signal access boosting pulse width conversion part 8 and controls its operating state, if comparison amplifier 5 exports the electric impulse signal of multiple instability, within the delay pulse time (in be set to 100mS), the unnecessary electric impulse signal of eliminating is only provided a pure pulse per second (PPS) output by delay pulse processor Y-C, and Digital Logic processing section 7 must be set in 250mS locking time, this means that delay pulse processor Y-C can repeated trigger Digital Logic processing section 7, and make it to keep exporting to be in the lock state all the time, thus avoid producing misoperation (as shown in Figure 2) to boosting pulse width conversion part 8.
Boosting pulse width conversion part 8 of the present invention is by voltage-controlled input translator, integral triangle wave producer, controlled Schmidt trigger, threshold values comparison circuit forms V-F circuit electrical and connects, it is characterized in that control signal is inputted by error amplifier A4, Dead Time comparator is delivered on one road, the input of voltage-controlled integrator is sent on one tunnel, Dead Time comparator has the input offset voltage of 120mV, which limit the usefulness minimum output Dead Time and approximate 4% of sawtooth period, and maximum output duty cycle is 96%, when error amplifier A4 input does not connect reference level, duty ratio is 48%, when accessing reference level, duty ratio is 96%, when Power MOSFET can be produced additional Dead Time on the output pulse at fixing voltage (scope is between 0-3.3V), to control boosting efficiency, prevent full conducting, integral characteristic is changed by the voltage-controlled voltage of inverting input by external integrating capacitor CT, thus the cycle changing modulation pulsewidth changes or selects to change between 0-48% between 0%-96%, and pulse frequency remains unchanged, voltage-controlled voltage can arbitrary value between 0-1.5V, pulse frequency F ≈ 1.72/RtCt, wherein built-in Rt=5K.
Constant current charge part 9 of the present invention is by controllable constant current source circuit I, external positive-negative-positive driving tube forms electrical connection, it is characterized in that driving tube is positive-negative-positive, built-in precision constant current source, constant-current source electric current is set to 0-10MA, namely maximum continuous current decides by the current amplification factor of external driving tube: current amplification factor is multiplied by maximum constant-current source current value, such as to obtain the charging current of 1A, so selection current amplification factor is the external tame and docile dynamic pipe of 100, Constant current input voltage is determined according to lithium battery maximum charging voltage, lithium battery safe charging is realized by constant-current source autoconverter, adaptability, versatility is stronger, and traditional constant voltage constant current charging mode needs application-specific integrated circuit (ASIC) to realize, which results in the complexity of portable power source circuit, from practical application, because input voltage fluctuation is larger, this segmented charging modes can not play actual effect well, also non-best mode.
The present invention can form portable power source complete circuit by a typical peripheral circuit, it comprises 00 integrated circuit (IC) chip, 01 start-up circuit, 02 charging circuit, 03 booster circuit, 04 accumulator, 05 local temperature control circuit, 06 long-range temperature control circuit, 07 battery capacity indication circuit, 08 energy-storage battery forms (as shown in Figure 4), circuit feature is by start-up capacitance Ct, Sampling network DW, R1/R2, feedback network Dt, the RT/CT of integrating capacitor Ci and integrated circuit, TFO, VFB, PICT pin connects and composes start-up circuit respectively, determine the startup work of integrated circuit, realize constant current charge, PWM boosts, two temperature controls to detect, Zero-power-consumption standby, synchronously fill the functions such as power supply, connect and compose charging circuit respectively by the DCI pin of charging socket CZ2, power tube U1, isolating diode D2 and integrated circuit, VREF pin and lithium battery EC, realize the charging to energy-storage battery or battery of mobile phone, connect and compose booster circuit respectively by the OUT pin of boosted switch pipe U2, inductance L, diode D1, electric capacity C0, accessory power outlet CZ1 and integrated circuit and lithium battery EC, realize the boost charge of portable power source to battery of mobile phone, connect and compose accumulator by input socket CZ2, diode D3, storage capacitor CC and integrated circuit VCC pin, realize the energy storage work of integrated circuit, Zero-power-consumption standby, connect and compose temperature control circuit respectively by IN, TFO, VFB pin of remote temperature sensor Rt, local temperature sensor Dt and integrated circuit, realize the temperature control protection of the discharge and recharge of portable power source lithium battery, connect and compose battery capacity indication circuit respectively by IR, LEDV, GND of battery capacity indication pipe LED1-5, inspection current load RI and integrated circuit, realize the overvoltage in charge and discharge process, under-voltage, overcurrent protection and battery electric quantity and show.
Control mode of the present invention mainly comprises the modulation of tracking mode voltage-controlled integration duty ratio PWM closed loop bimodulus, realize boosting voltage stabilizing to power, local and remote double temperature control adopts second order noninertia proportional, integral PI regulable control, realize two warm environment Dynamic comparison, catch micro-difference variation to be controlled, solidification continuous current drives built-in precision constant current source to realize automatic constant current quick charge, the two-parameter Weight tracking of electric current and voltage regulates and realizes overvoltage/undervoltage, overcurrent protection and Pyatyi electricity display management, original creation chip threshold voltage ON-OFF control circuit, guarantee to eliminate integrated circuit startup work and exit normal between energy consumption under critical condition, digital logic processing circuit is inside established to have automatic activation, State Transferring, pulse differentiates, the function of delay disposal, ad hoc energy storage type zero-power dormancy control circuit, when energy-storage battery voltage is down to below integrated circuit normal working voltage, as the voltage on storage capacitor CC also released be zero time, circuit is blocked and quits work, now be equivalent to be separated with battery completely, and when needing circuit start, then it is made to charge to integrated circuit normal working voltage by activating storage capacitor CC, so integrated circuit is activated, and traditional portable power source integrated circuit (IC) chip can only accomplish Micro Energy Lose dormancy, and do not possess the functions such as two temperature control and energy storage for power supply.
Operation principle can be described as, when portable power source lithium battery EC voltage is in low-voltage state 2.2V-2.8V, connect charger charging plug is inserted CZ2 start charging, first charging voltage charges to about 5V through D3 to storage capacitor CC, VCC obtains the supply power voltage of 2.8V-5V, integrated circuit (IC) chip produces a Deadtime Control system sensitizing pulse and makes whole circuit working (as shown in Figure 3), N circuit Q-holds upset to export high potential, constant-current charging circuit drives U1 to charge to lithium battery EC after D2 isolation, hold chip power supply through VREF simultaneously, in addition also by inductance L, D1, C0 exports through CZ1, DW is used for detecting the voltage status on C0, off state is in lower than during 3.2V, mean that now energy-storage battery needs charging to start booster circuit, when puncturing conducting higher than DW during this voltage range, access voltage detecting potential-divider network R1 R2, now provide triggering signal to Digital Logical Circuits N+D by D-W, booster circuit is activated simultaneously, by driving the switch of U2, realize the function simultaneously to lithium battery EC and mobile phone charging, inductance L here, fast recovery diode D1, filter capacitor C0 play the effect of switch place energy.When battery is full close to charging, because the voltage of lithium battery EC is close to charging voltage, constant-current source enters tax stream mode automatically, if now mobile phone is still connected to CZ1 when being in charged state, due to R1 the voltage of R2 dividing point very high, make the duty ratio of the voltage controlled duty cycle circuit V-F of integrated circuit very large, U2 is almost in off state, and therefore booster circuit there will not be overvoltage phenomenon; And now, cell voltage and charging and discharging currents take from VREF point respectively by electric quantity display circuit V+1 and inspection leakage resistance Ri is weighted process, by Pyatyi dividing potential drop reality illuminating state; And the work of two temperature control circuit detects home environment temperature by Dt, Rt detects the body temperature of long-range lithium battery, and two temperature carried out amplify, comparing after integral processing, obtain control impuls, differentiate through delay circuit again, finally go to control constant-current charging circuit and normally work with boosting power supply circuits.
Obviously, the direct benefit brought according to portable power source and the control mode of the present invention's formation is to achieve constant current charge, PWM boosting, two temperature control detection, Zero-power-consumption standby, synchronously fill the functions such as power supply; Especially integrated circuit (IC) chip have employed standard 12 pin pin pattern; the chip energy storage of original creation and Zero-power-consumption standby function; two function of temperature control; Pyatyi electric power detection is protected; make portable power source operationally achieve overvoltage, the detection of under-voltage, overcurrent protection and ambient temperature and battery temperature and overtemperature control to protect; during inoperative, do not consume the electric energy of energy-storage battery simultaneously, ensure that because shelving for a long time or the safety of accumulating, therefore having highlighted originality of the present invention, novelty and practicality.
Accompanying drawing explanation
The present invention can be further described by accompanying drawing.
Accompanying drawing 1 is integrated circuit block diagram of the present invention
Accompanying drawing 2 is IC interior schematic diagrams of the present invention
Accompanying drawing 3 is groundwork oscillograms of the present invention
Accompanying drawing 4 is portable power source circuit block diagrams of the present invention
Accompanying drawing 5 is embodiment of the present invention circuit diagrams
Embodiment
Art embodiments of the present invention are retouched further by the principle described in accompanying drawing 1-5 and embodiment, it is characterized in that with integrated circuit (IC) chip 00 for circuit core, peripheral portable power source circuit connects and composes start-up circuit 01 respectively by RT/CT, TFO, VFB, PICT pin of start-up capacitance Ct, Sampling network DW, R1/R2, feedback network Dt, integrating capacitor Ci and integrated circuit, determine the startup work of integrated circuit, realize constant current charge, PWM boosting, two temperature control detection, Zero-power-consumption standby, synchronously fill the functions such as power supply; Connect and compose charging circuit 02 respectively by the DCI pin of charging socket CZ2, power tube U1, isolating diode D2 and integrated circuit, VREF pin and energy-storage battery EC, realize the charging to energy-storage battery or battery of mobile phone; Connect and compose booster circuit 03 respectively by the OUT pin of boosted switch pipe U2, inductance L, diode D1, electric capacity C0, accessory power outlet CZ1 and integrated circuit and energy-storage battery EC, realize the boost charge of portable power source to battery of mobile phone; Connect and compose accumulator 04 by input socket CZ2, diode D3, storage capacitor CC and integrated circuit VCC pin, realize the energy storage work of integrated circuit 00, Zero-power-consumption standby; The detection that local temperature control circuit 05 realizes ambient temperature is connected and composed by TFO, VFB pin of local temperature sensor Dt and integrated circuit, connect and compose long-range temperature control circuit 06 by remote temperature sensor Rt and integrated circuit IN pin, realize the temperature control protection of the discharge and recharge of portable power source lithium battery; Connect and compose by battery capacity indication pipe LED1-5, inspection current load RI and IR, LEDV, GND of integrated circuit the battery electric quantity that battery capacity indication circuit 07 realizes in charge and discharge process respectively to show, form energy-storage battery 08 by lithium battery EC; Can find out that this example only adopts the one piece of integrated circuit (IC) chip just repertoire of formation needed for portable power source, and circuit achieves zero-power when standby, highlighted the advantage of the present invention's original creation, this integrated circuit can also develop corresponding practical circuit in addition.
In sum, the present invention is by the design innovation to integrated circuit, except having overvoltage, under-voltage, outside overcurrent protection function, add the temperature control defencive function of portable power source, the chip energy storage of original creation and Zero-power-consumption standby function, two function of temperature control, portable power source is made operationally to achieve overtemperature control protection, during inoperative, do not consume the electric energy of energy-storage battery simultaneously, ensure that because shelving for a long time or the safety of accumulating, fill up the defect of portable power source in battery temperature control protection, compared with existing similar integrated circuit, circuit forms succinct, integrated level is high, control mode is unique, multiple functional, pragmatic general is strong, and substantially reduce portable power source board area, reduce volume, reduce production cost.
The present invention is applicable to small-sized miniature accumulation power supply, and stand-by power supply, emergency power supply, be specially adapted to the exploitation of the products such as mobile phone power bank.
Claims (10)
1. a portable power source double temperature double control integrated circuit and circuit control method belong to the invention of portable power source technical field of integrated circuits, the double temperature sensor temperature-sensitive control method of ambient temperature compared with monitor temperature is adopted to realize the discharge and recharge temperature of remote monitoring lithium battery, and then control portable power source main board work state, its integrated circuit mainly comprises 1 controlled reference power supply part, 2 input amplifier parts, 3PI adjuster, 4 error amplifier part, 5 comparator parts, 6 electric power detection control sections, 7 Digital Logic processing sections, 8PWM boost conversion part, 9 constant current charge parts form electrical connection, its body feature be the inner controlled reference power supply part 1 of this integrated circuit (IC) chip respectively with error amplifier part 4, comparator part 5 forms reference voltage electrical connection, be electrically connected by isolated controlling D0 and internal electrical source VCC simultaneously, also form with threshold controller DZ and be electrically connected, input amplifier part 2 respectively with error amplifier 4, pi regulator 3 forms amplifier electrical connection, error amplifier part 4 also realizes voltage-controlled electrical connection with PWM boost converter 8, comparator part 5 inputs and is electrically connected with controlled reference power supply part 1 and pi regulator 3, export and be electrically connected with Digital Logic processing section 7, electric power detection control section 6 connects and composes current/voltage check processing with controlled reference power supply part 1 and electric current I R respectively, under-voltage overvoltage protection is connected and composed with Digital Logic processing section 7, constant current charge part 9 is connected controlled formation constant-current charging circuit with Digital Logic processing section 7, and jointly form electrical connection by 12 pins, its pin function is respectively cell voltage input pin VREF, energy storage source access pin VCC, sensing input pin IN, current detecting input pin IR, grounding leg GND, integral adjustment input pin PICI, battery capacity indication output pin LEDV, constant current charge input pin DCI, boosting output pin OUT, frequency input pin RT/CT, voltage-controlled output pin TFO, detect input pin VFB to form, control mode of the present invention mainly comprises the modulation of tracking mode voltage-controlled integration duty ratio PWM closed loop bimodulus, local and remote double temperature control adopts second order noninertia proportional, integral PI regulable control, solidification continuous current drives quick charge to control, the two-parameter Weight tracking of electric current and voltage regulates, Pyatyi electric power detection display management, chip digital logical process, threshold voltage switch, the dormancy of energy storage type zero-power control, thus form independent claims of the present invention.
2. controlled reference power supply part 1 according to claim 1 comprises the electrical connection of the circuit such as active circuit K, threshold controller Dz, isolation controller D0, external energy storage source CC, constant current a reference source V-I formation, it is characterized in that active circuit K is provided with self-starting activation voltage, control by threshold controller DZ on the one hand, it is integrated circuit that one tunnel connects and composes power circuit through isolation controller D0 and extraneous energy storage source CC, activation voltage is generally 2.2V-5V, the limit low pressure of ferric phosphate lithium cell can be adapted to, another road and constant current a reference source V-I connect and compose error amplifier A2, relatively a reference source of amplifying circuit A3 provides reference power source, it is comparatively suitable that reference voltage is generally set in 1.5V, when cell voltage is greater than more than 2.5V, active circuit K is automatically activated through isolation controller D0 energy storage source CC charging energy-storing to external world, simultaneously for integrated circuit provides power supply, set up the reference voltage of constant current a reference source V-I, in addition active circuit K also forms electrical connection by threshold controller DZ and Digital Logical Circuits N+D, circuit dormancy or under-voltage time power consumption be zero energy consumption.
3. input amplifier part 2 according to claim 1 forms electrical connection by differential amplifier A1, error amplifier part 4, it is characterized in that the external remote temperature sensor Rt of in-phase input end 1N, the output of error amplifier part 4 accesses as dynamic reference source by reverse input end, constant current a reference source V-I and error amplifier A2 and remote temperature sensor Rt and amplifier input resistance constitute of input amplifier part 2 and input dynamic electric bridge network, and this dynamic electric bridge network just provides the detection of remote temperature accurate just.
4. pi regulator 3 according to claim 1 is made up of J-F treatment circuit, integrating capacitor Ci network, it is characterized in that comparing track algorithm control by second order noninertia proportional, integral PI adjustment, threshold values, input amplifier A1 exports high potential and encourages external integrating capacitor Ci to obtain integral curve point, realize proportion integral control device regulable control to the differentiation of input signal, its output voltage is supplied to the in-phase input end of voltage comparator A3 and follows the tracks of to compare with the constant current a reference source V-I reference voltage of inverting input and obtain high potential and export.
5. error amplifier part 4 according to claim 1 forms electrical connection by voltage amplifier A2, follow-up amplifier A4, it is characterized in that voltage amplifier A2 is connected into in-phase amplifier, local temperature sensor Dt and potential-divider network R1/R2 is accessed by input VFB, output TFO external-connected port, export termination follow-up amplifier A4, local temperature sensor Dt temperature often raises 1 DEG C of its forward voltage drop and reduces 2mV, voltage amplifier A2 in-phase input end meets reference voltage V-I and exports, and inverting input then jointing temp transducer Dt forms electrical connection.
6. comparator part 5 according to claim 1 forms electrical connection by electric current and voltage dual comparator A3, it is characterized in that voltage, output that current comparator inverting input is connected to 1 controlled reference power supply forms reference voltage, the output that in-phase input end is connected to integrator 3 is formed, the inspection leakage resistance Ri that current comparator homophase termination IR holds forms electrical connection, and the height of adjustment reference voltage determines a fixing height starting to control point voltage i.e. overtemperature point, overcurrent starts to control a little.
7. electric power detection control section 6 according to claim 1 forms electrical connection by variable voltage amplifier A5, electric current and voltage weighting processor V+I, it is characterized in that the voltage of variable voltage amplifier A5 takes from controlled reference power supply part 1, and electric current takes from RI by external-connected port IR, and on weighting processor V+I, be weighted process obtain overvoltage, under-voltage, overcurrent triggering signal and battery capacity indication signal, overvoltage, under-voltage, over-current signal one tunnel access Digital Logical Circuits part 7, external-connected port LEDV of separately leading up to output driving LED 1-5 indicating circuit.
8. Digital Logic processing section 7 according to claim 1 by delay pulse processor Y-C, the logic gates that steady state trigger N+D both comprised can be repeated form electrical connection, it is characterized in that the activation signal of circuit is as the activation voltage that energy storage source CC obtains, state transition signals comes as the puncture voltage on DW, and temperature signal carrys out the electric pulse as voltage comparator A3, the positive pulse trigger internal steady state trigger action that wherein after delayed burst process, acquisition one is clean, trigger exports control signal access boosting pulse width conversion part 8 and controls its operating state, if comparison amplifier 5 exports the electric impulse signal of multiple instability, within the delay pulse time (in be set to 100mS), the unnecessary electric impulse signal of eliminating is only provided a pure pulse per second (PPS) output by delay pulse processor Y-C, and Digital Logic processing section 7 must be set in 250mS locking time, this means that delay pulse processor Y-C can repeated trigger Digital Logic processing section 7, and make it to keep exporting to be in the lock state all the time, thus avoid producing misoperation to boosting pulse width conversion part 8.
9. boosting pulse width conversion part 8 according to claim 1 is by voltage-controlled input translator, integral triangle wave producer, controlled Schmidt trigger, threshold values comparison circuit forms V-F circuit electrical and connects, it is characterized in that control signal is inputted by error amplifier A4, Dead Time comparator is delivered on one road, the input of voltage-controlled integrator is sent on one tunnel, Dead Time comparator has the input offset voltage of 120mV, minimum output Dead Time approximates 4% of sawtooth period, and maximum output duty cycle is 96%, when error amplifier A4 input does not connect reference level, duty ratio is 48%, when accessing reference level, duty ratio is 96%, when Power MOSFET can be produced additional Dead Time on the output pulse at fixing voltage (scope is between 0-3.3V), to control boosting efficiency, prevent full conducting, integral characteristic is changed by the voltage-controlled voltage of inverting input by external integrating capacitor CT, thus the cycle changing modulation pulsewidth changes or selects to change between 0-48% between 0%-96%, and pulse frequency remains unchanged, voltage-controlled voltage can arbitrary value between 0-1.5V, pulse frequency F ≈ 1.72/RtCt, wherein built-in Rt=5K.
10. constant current charge part 9 according to claim 1 forms electrical connection by controllable constant current source circuit I, external positive-negative-positive driving tube, it is characterized in that driving tube is positive-negative-positive, built-in precision constant current source, constant-current source electric current is set to 0-10MA, and namely maximum continuous current decides by the current amplification factor of external driving tube: current amplification factor is multiplied by maximum constant-current source current value.
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| CN107749632A (en) * | 2017-10-18 | 2018-03-02 | 珠海格力电器股份有限公司 | A kind of energy-storage system and its control method |
| CN109581233A (en) * | 2018-12-29 | 2019-04-05 | 武汉理工大学 | Detect the device and its control method of the positive and negative monolithic voltage of fuel cell |
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| CN105553023B (en) * | 2016-01-21 | 2017-12-19 | 长安大学 | A kind of more loop composite switch formula battery charging converter circuits |
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| CN107749632B (en) * | 2017-10-18 | 2020-06-02 | 珠海格力电器股份有限公司 | Energy storage system and control method thereof |
| CN109581233A (en) * | 2018-12-29 | 2019-04-05 | 武汉理工大学 | Detect the device and its control method of the positive and negative monolithic voltage of fuel cell |
| CN109581233B (en) * | 2018-12-29 | 2024-03-15 | 武汉理工大学 | Device for detecting positive and negative monolithic voltages of fuel cell and control method thereof |
| CN113312877B (en) * | 2021-05-28 | 2021-11-30 | 深圳市兴隆鑫科技有限公司 | Design method of mobile power supply protection board based on integrated circuit |
| CN113312877A (en) * | 2021-05-28 | 2021-08-27 | 深圳市兴隆鑫科技有限公司 | Design method of mobile power supply protection board based on integrated circuit |
| CN113312291A (en) * | 2021-06-05 | 2021-08-27 | 快趣网络科技发展(上海)有限公司 | Golf radar sensor mainboard circuit |
| CN113312291B (en) * | 2021-06-05 | 2022-03-01 | 快趣网络科技发展(上海)有限公司 | Golf radar sensor mainboard circuit |
| CN113595182A (en) * | 2021-07-23 | 2021-11-02 | 深圳纬图鸿达实业有限公司 | Safety and stable discharge circuit for UPS |
| CN113824186A (en) * | 2021-09-24 | 2021-12-21 | 浙江奥思伟尔电动科技有限公司 | New energy automobile power assembly controller |
| CN113824186B (en) * | 2021-09-24 | 2024-02-13 | 浙江奥思伟尔电动科技有限公司 | New energy automobile power assembly controller |
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