CN203942320U - The collaborative mixed equilibrium circuit of active-passive of series-connected batteries - Google Patents
The collaborative mixed equilibrium circuit of active-passive of series-connected batteries Download PDFInfo
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Abstract
The collaborative mixed equilibrium circuit of active-passive that the utility model discloses a kind of series-connected batteries, the collaborative mixed equilibrium circuit of described active-passive comprises active equalization circuit, passive equalizing circuit and control chip.The utility model is when batteries charging, in the constant current charge stage, first using active equalization to carry out first stage energy to battery moves, when cell voltage approached pressure point, battery charge reduces, proceed to gradually constant voltage charge process, now close active equalization, enable passive equilibrium, at charging end, carrying out second stage energy moves, can eliminate the impact that active equalization causes battery voltage sampling on the one hand, eliminate the interference that the energy-storage travelling wave tubes such as inductance produce under high-frequency switching signal, can control more accurately charging overvoltage thresholding simultaneously, thereby the capacity of battery is consistent more accurately.The active-passive that the utility model provides is worked in coordination with mixed equilibrium method and equalizing circuit, takes full advantage of the advantage of single equilibrium mode, has made up the deficiency of single equilibrium mode, has realized the optimization of balanced efficiency.
Description
Technical field
The utility model relates to electrokinetic cell administrative skill field, relates in particular to a kind of collaborative mixed equilibrium circuit of active-passive of series-connected batteries.
Background technology
Lithium ion battery group is in series by a plurality of battery cells.Daily recycling in process, to the charging and discharging of battery pack, can cause gradually occurring between battery cell unbalanced phenomena, battery performance and consistency decline, show as voltage between cell and present difference, than other battery cells, sooner or slower, namely there is unbalanced phenomena in the charging rate that has one or more battery cells in the battery cell of one group of series connection.
The equalization methods of existing battery management system adopts single equalization methods substantially, or single employing active equalization mode, or the passive balanced way of single employing.Yet all there is defect in these two kinds of balanced ways:
Passive equilibrium can only be done charge balancing; Meanwhile, in charge balancing process, unnecessary energy falls as thermal release, makes the efficiency of whole system low, power consumption is high.Some occasion is limit dissipation power, and circuit is general only to be allowed with the low discharging current about 100mA, can be up to several hours thereby the balance that causes charging is consuming time.
Active equalization hardware circuit is complicated, and cost of manufacture is higher, and needs the software algorithm of a set of complexity to realize.In using the process of inductance equilibrium, because the typical voltage of battery pack is because being subject to the impact of inductance inductive element, will battery core voltage be produced fluctuation or be disturbed, therefore to the collection of battery core voltage, require high; Although active equalization euqalizing current is large, can reach 1A, even mean value can reach 5A, but balancing error is large, especially battery pack enters the constant voltage charge stage, when each battery cell voltage is very approaching, poor, the balanced efficiency of effect of active equalization is lower, is unfavorable for segmentation management.
Utility model content
The purpose of this utility model is to provide a kind of collaborative mixed equilibrium circuit of active-passive of series-connected batteries, can make full use of the advantage of single equilibrium mode, makes up the deficiency of single equilibrium mode, has realized the optimization of balanced efficiency.
The utility model adopts following technical proposals:
The collaborative mixed equilibrium circuit of active-passive of series-connected batteries, the collaborative mixed equilibrium circuit of described active-passive comprises active equalization circuit, passive equalizing circuit and control chip;
Described active equalization circuit comprises active equalization driver element and the many groups of sub-active equalization circuits that charge each other for controlling adjacent two batteries; Every group of sub-active equalization circuit includes two power amplified drive circuits and two mos pipes, and the output of the first power amplified drive circuit in every group of sub-active equalization circuit connects the grid of a mos pipe, and a mos pipe adopts N raceway groove mos pipe; The output of the second power amplified drive circuit in every group of sub-active equalization circuit connects the grid of the 2nd mos pipe, and the 2nd mos pipe adopts P raceway groove mos pipe; The source electrode of the one mos pipe connects the negative pole of the first battery in adjacent two batteries of controlling, the drain electrode of the one mos pipe connects the source electrode of the 2nd mos pipe, the drain electrode of the 2nd mos pipe connects the positive pole of the second battery in adjacent two batteries of controlling, the first end of inductance connects the drain electrode of a mos pipe, the second end of inductance connects the positive pole of the first battery in adjacent two batteries, between the source electrode of the one mos pipe and drain electrode, be parallel with the first diode, the positive pole of the first diode connects the source electrode of a mos pipe; Between the source electrode of the 2nd mos pipe and drain electrode, be parallel with the second diode, the positive pole of the second diode connects the source electrode of the 2nd mos pipe; The signal output part of control chip connects the signal input part of active equalization driver element, and the signal output part of active equalization driver element connects respectively the input of the first power amplified drive circuit and the second power amplified drive circuit in every group of sub-active equalization circuit;
Described passive equalizing circuit comprises that passive balanced drive unit, shift register and many groups are for controlling the passive equalizing circuit of son of each battery discharge; Every group of passive equalizing circuit of son includes the 3rd mos pipe and the energy consumption resistor of connecting with controlled battery; The signal output part of control chip connects the signal input part of passive balanced drive unit, the signal output part of passive balanced drive unit connects the signal input part of shift register, and the signal output part of shift register connects respectively the grid of the 3rd mos pipe in every group of passive equalizing circuit of son.
Described the first power amplified drive circuit and the second power amplified drive circuit all adopt mutual symmetry amplification driving circuit, the first power amplified drive circuit comprises the first triode and the second triode, the first triode adopts positive-negative-positive triode, the second triode adopts NPN type triode, the base stage of the first triode is connected with the base stage of the second triode, the collector electrode of the first triode connects the emitter of the second triode, the base stage of the base stage of the first triode and the second triode is connected the grid of a mos pipe jointly by the first electric capacity, the emitter of the first triode connects the positive pole of the first diode, the collector electrode of the second triode connects the negative pole of the second diode, the second power amplified drive circuit comprises the 3rd triode and the 4th triode, the 3rd triode adopts positive-negative-positive triode, the 4th triode adopts NPN type triode, the base stage of the 3rd triode is connected with the base stage of the 4th triode, the collector electrode of the 3rd triode connects the emitter of the 4th triode, the base stage of the base stage of the 3rd triode and the 4th triode is connected the grid of the 2nd mos pipe jointly by the second electric capacity, the emitter of the 3rd triode connects the positive pole of the first diode, and the collector electrode of the 4th triode connects the negative pole of the second diode.
The signal output part of described active equalization driver element is respectively by the corresponding input that is connected the first power amplified drive circuit and the second power amplified drive circuit in every group of sub-active equalization circuit of inverter and optocoupler; The signal output part of shift register is respectively by the corresponding grid that connects the 3rd mos pipe in every group of passive equalizing circuit of son of optocoupler.
The utility model is when batteries charging, in the constant current charge stage, first using active equalization to carry out first stage energy to battery moves, when cell voltage approached pressure point, battery charge reduces, proceed to gradually constant voltage charge process, now close active equalization, enable passive equilibrium, at charging end, carrying out second stage energy moves, can eliminate the impact that active equalization causes battery voltage sampling on the one hand, eliminate the interference that the energy-storage travelling wave tubes such as inductance produce under high-frequency switching signal, can control more accurately charging overvoltage thresholding simultaneously, thereby the capacity of battery is consistent more accurately.The active-passive that the utility model provides is worked in coordination with mixed equilibrium method and equalizing circuit, takes full advantage of the advantage of single equilibrium mode, has made up the deficiency of single equilibrium mode, has realized the optimization of balanced efficiency.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram of the collaborative mixed equilibrium circuit of active-passive of series-connected batteries described in the utility model.
Embodiment
The collaborative mixed equilibrium circuit of active-passive of series-connected batteries described in the utility model, for controlling the battery pack being composed in series by many Battery packs, the collaborative mixed equilibrium circuit of described active-passive comprises active equalization circuit, passive equalizing circuit and control chip;
Described active equalization circuit comprises active equalization driver element and the many groups of sub-active equalization circuits that charge each other for controlling adjacent two batteries; Every group of sub-active equalization circuit structure is identical, can be arranged into an array, and control respectively adjacent two batteries and charge each other.For example, for the battery pack being formed by the series connection of N+1 piece battery, N can be set to be organized sub-active equalization circuit and controls, for controlling the first sub-active equalization circuit of the mutual charging of the first battery and the second battery, the second sub-active equalization circuit charging each other for controlling the second battery and the 3rd battery, by that analogy, and for controlling the each other sub-active equalization circuit of N of charging of N battery and N+1 battery.
Every group of sub-active equalization circuit includes two power amplified drive circuits and two mos pipes, and the output of the first power amplified drive circuit in every group of sub-active equalization circuit connects the grid of a mos pipe, and a mos pipe adopts N raceway groove mos pipe; The output of the second power amplified drive circuit in every group of sub-active equalization circuit connects the grid of the 2nd mos pipe, and the 2nd mos pipe adopts P raceway groove mos pipe; The source electrode of the one mos pipe connects the negative pole of the first battery in adjacent two batteries of controlling, the drain electrode of the one mos pipe connects the source electrode of the 2nd mos pipe, the drain electrode of the 2nd mos pipe connects the positive pole of the second battery in adjacent two batteries of controlling, the first end of inductance connects the drain electrode of a mos pipe, the second end of inductance connects the positive pole of the first battery in adjacent two batteries, between the source electrode of the one mos pipe and drain electrode, be parallel with the first diode, the positive pole of the first diode connects the source electrode of a mos pipe; Between the source electrode of the 2nd mos pipe and drain electrode, be parallel with the second diode, the positive pole of the second diode connects the source electrode of the 2nd mos pipe; The signal output part of control chip connects the signal input part of active equalization driver element, and the signal output part of active equalization driver element connects respectively the input of the first power amplified drive circuit and the second power amplified drive circuit in every group of sub-active equalization circuit.In the present embodiment, the signal output part of active equalization driver element is respectively by the corresponding input that is connected the first power amplified drive circuit and the second power amplified drive circuit in every group of sub-active equalization circuit of inverter and optocoupler.The first power amplified drive circuit and the second power amplified drive circuit all adopt mutual symmetry amplification driving circuit, the first power amplified drive circuit comprises the first triode and the second triode, the first triode adopts positive-negative-positive triode, the second triode adopts NPN type triode, the base stage of the first triode is connected with the base stage of the second triode, the collector electrode of the first triode connects the emitter of the second triode, the base stage of the base stage of the first triode and the second triode is connected the grid of a mos pipe jointly by the first electric capacity, the emitter of the first triode connects the positive pole of the first diode, the collector electrode of the second triode connects the negative pole of the second diode, the second power amplified drive circuit comprises the 3rd triode and the 4th triode, the 3rd triode adopts positive-negative-positive triode, the 4th triode adopts NPN type triode, the base stage of the 3rd triode is connected with the base stage of the 4th triode, the collector electrode of the 3rd triode connects the emitter of the 4th triode, the base stage of the base stage of the 3rd triode and the 4th triode is connected the grid of the 2nd mos pipe jointly by the second electric capacity, the emitter of the 3rd triode connects the positive pole of the first diode, and the collector electrode of the 4th triode connects the negative pole of the second diode.
Described passive equalizing circuit comprises that passive balanced drive unit, shift register and many groups are for controlling the passive equalizing circuit of son of each battery discharge; Every group of passive equalizing circuit of son includes the 3rd mos pipe and the energy consumption resistor of connecting with controlled battery; The signal output part of control chip connects the signal input part of passive balanced drive unit, the signal output part of passive balanced drive unit connects the signal input part of shift register, and the signal output part of shift register connects respectively the grid of the 3rd mos pipe in every group of passive equalizing circuit of son.In the present embodiment, the signal output part of shift register is respectively by the corresponding grid that connects the 3rd mos pipe in every group of passive equalizing circuit of son of optocoupler.
Below in conjunction with Fig. 1, the operation principle of the collaborative mixed equilibrium circuit of the active-passive of series-connected batteries described in the utility model is elaborated:
Two groups of sub-active equalization circuits in Fig. 1, have been drawn, be respectively and control the first sub-active equalization circuit mutually charging between the first battery cell_1 and the second battery cell_2 and the second sub-active equalization circuit of controlling mutual charging between the second battery cell_2 and the 3rd battery cell_3.At this, take the first sub-active equalization circuit controls between the first battery cell_1 and the second battery cell_2 and realizes active equalization as example.
The first sub-active equalization circuit comprises two power amplified drive circuits and two mos pipes, and the first power amplified drive circuit and the second power amplified drive circuit all adopt mutual symmetry amplification driving circuit.The first power amplified drive circuit and the second power amplified drive circuit drive signal to carry out reverse process and carry out light-coupled isolation for PWM, to have realized the effect of the dual resisteance of floating ground of light current low voltage control high pressure DC/DC, greatly improved high efficiency, reliability and the stability of the first sub-equalizing circuit when large current balance.Owing to will consider the problem of balanced efficiency in balancing procedure, and the problem of high pressure isolation, it is very good that mutual symmetry amplification driving circuit can be done the rising of pwm signal and descending slope, thereby improved the efficiency of balanced power supply
The first power amplified drive circuit comprises the first triode Q1 and the second triode Q2, the first triode Q1 adopts positive-negative-positive triode, the second triode Q2 adopts NPN type triode, the base stage of the first triode Q1 is connected with the base stage of the second triode Q2, the collector electrode of the first triode Q1 connects the emitter of the second triode Q2, the base stage of the base stage of the first triode Q1 and the second triode Q2 is connected the grid of a mos pipe Q11 jointly by the first capacitor C 1, the emitter of the first triode Q1 connects the positive pole of the first diode D1, the collector electrode of the second triode Q2 connects the negative pole of the second diode D2, the one mos pipe Q11 adopts N raceway groove mos pipe.
The second power amplified drive circuit comprises the 3rd triode Q3 and the 4th triode Q4, the 3rd triode Q3 adopts positive-negative-positive triode, the 4th triode Q4 adopts NPN type triode, the base stage of the 3rd triode Q3 is connected with the base stage of the 4th triode Q4, the collector electrode of the 3rd triode Q3 connects the emitter of the 4th triode Q4, the base stage of the base stage of the 3rd triode Q3 and the 4th triode Q4 is connected the grid of the 2nd mos pipe Q12 jointly by the second capacitor C 2, the emitter of the 3rd triode Q3 connects the positive pole of the first diode D1, the collector electrode of the 4th triode Q4 connects the negative pole of the second diode D2.The output of the second power amplified drive circuit connects the grid of the 2nd mos pipe Q12, and the 2nd mos pipe Q12 adopts P raceway groove mos pipe;
The source electrode of the one mos pipe Q11 connects the negative pole of the first battery cell_1 in adjacent two batteries of controlling, the drain electrode of the one mos pipe Q11 connects the source electrode of the 2nd mos pipe Q12, the drain electrode of the 2nd mos pipe Q12 connects the positive pole of the second battery cell_2 in adjacent two batteries of controlling, the first end of inductance L connects the drain electrode of a mos pipe Q11, the second end of inductance L connects the positive pole of the first battery cell_1 in adjacent two batteries, between the source electrode of the one mos pipe Q11 and drain electrode, be parallel with the first diode D1, the positive pole of the first diode D1 connects the source electrode of a mos pipe Q11, between the source electrode of the 2nd mos pipe Q12 and drain electrode, be parallel with the second diode D2, the positive pole of the second diode D2 connects the source electrode of the 2nd mos pipe Q12, the signal output part of active equalization driver element connects the input of the first power amplified drive circuit and the second power amplified drive circuit.
If the voltage difference that is in the first battery cell_1 in the first sub-active equalization circuit and the second battery cell_2 together is during higher than the poor threshold value of predeterminated voltage, there is imbalance in control chip judgement battery pack in discharge process.When the first battery cell_1 voltage is with respect to the second battery cell_2 when lower, the PWM that control chip is exported by active equalization driver element drives signal after inverter and optocoupler, utilize the 3rd triode Q3 and the 4th triode Q4 in the second power amplified drive circuit to carry out power drive, then after the second capacitor C 2 isolation, export the grid of the 2nd mos pipe Q12 to; When exporting the PWM of the 2nd mos pipe Q12 grid to and drive signal to be low level, the 2nd mos pipe Q12 conducting; Now the second battery cell_2 charges to inductance L by the 2nd mos pipe Q12, and the energy of the second battery cell_2 is transferred to inductance L; When exporting the PWM of the 2nd mos pipe Q12 grid to and drive signal to be high level, the 2nd mos pipe Q12 cut-off, because inductance L, the first battery cell_1 and the first diode D1 form conducting loop, the the first diode D1 that plays afterflow effect continues to maintain the electric current of inductance L, and the energy of inductance L is transferred to the first battery cell_1.Because PWM drives the continuous circulation of signal, the energy that can realize the second battery cell_2 by inductance L constantly shifts to the first battery cell_1.
If the voltage difference that is in the first battery cell_1 in the first sub-active equalization circuit and the second battery cell_2 together is during higher than the poor threshold value of predeterminated voltage, there is imbalance in control chip judgement battery pack in discharge process.When the second battery cell_2 voltage is with respect to the first battery cell_1 when lower, the PWM that control chip is exported by active equalization driver element drives signal after inverter and optocoupler, utilize the first triode Q1 and the second triode Q2 in the first power amplified drive circuit to carry out power drive, then after the first capacitor C 1 isolation, export the grid of a mos pipe Q11 to; When exporting the PWM of a mos pipe Q11 grid to and drive signal to be high level, a mos pipe Q11 conducting; Now the first battery cell_1 charges to inductance L by a mos pipe Q11, and the energy of the first battery cell_1 is transferred to inductance L; When exporting the PWM of a mos pipe Q11 grid to and drive signal to be low level, the one mos pipe Q11 cut-off, because inductance L, the second battery cell_2 and the second diode D2 form conducting loop, the the second diode D2 that plays afterflow effect continues to maintain the electric current of inductance L, and the energy of inductance L is transferred to the second battery cell_2.Because PWM drives the continuous circulation of signal, the energy that can realize the first battery cell_1 by inductance L constantly shifts to the second battery cell_2.
In Fig. 1, also draw two groups of passive equalizing circuits of son, be respectively and control the first sub passive equalizing circuit that the first battery cell_1 carries out passive electric discharge, and controlled the second sub passive equalizing circuit that the second battery cell_2 carries out passive electric discharge.At this, take the first sub-active equalization circuit, to control the passive electric discharge of the first battery cell_1 be example.
Control chip exports the grid of the 3rd mos pipe Q13 to after light-coupled isolation by the level signal of passive balanced drive unit and shift register output, when exporting the level signal of the 3rd mos pipe Q13 grid to and be low level, the 3rd mos pipe Q13 conducting, now the first battery cell_1, the 3rd triode Q3 and energy consumption resistor R form conducting loop, energy consumption resistor R work, the first battery cell_1 starts by leakage current, consumes unnecessary energy; When exporting the level signal of the 3rd mos pipe Q13 grid to and be high level, the 3rd mos pipe Q13 cut-off, the first battery cell_1 stops the energy of releasing.The 3rd mos pipe Q13 adopts P raceway groove mos pipe.
In the application, because the voltage of cell is more than 1.4V, can guarantee normally and the cut-off of P raceway groove mos pipe and N raceway groove mos pipe.
The collaborative mixed equilibrium circuit of active-passive of series-connected batteries described in the utility model, when realizing equilibrium, comprises the following steps:
A: control chip detects the current value in series battery by current detecting equipment, and compare with trickle-charge current threshold value and trickle discharge threshold value, judgement battery pack is in discharge regime or charging stage, if the current value measuring is higher than trickle discharge threshold value, judge in discharge regime, enter step B; If the current value measuring, higher than trickle-charge current threshold value, judges in the charging stage, enter step C;
B: whether the voltage difference of control chip two batteries in same sub-active equalization circuit by calculating is higher than the poor threshold value of predeterminated voltage, judge whether battery pack occurs imbalance in discharge process, if there is imbalance and control chip and judge a certain battery and occur the situation that voltage is lower in discharge process in battery pack, control chip is controlled active equalization circuit work and is realized active equalization, utilize the battery lower with voltage another piece battery in same sub-active equalization circuit to charge to the lower battery of voltage, until whole battery power discharge is to under-voltage condition,
When battery pack is in discharge process, if the voltage difference of two batteries in same sub-active equalization circuit during higher than the poor threshold value of predeterminated voltage, judges that imbalance occurs battery pack in discharge process;
The step that realizes active equalization is: first control module controls the corresponding mos pipe conducting in first group of discrete time gap of the voltage higher battery in same sub-active equalization circuit in lower with voltage, makes the higher battery of voltage to the inductive energy storage in sub-active equalization circuit; Then control module is controlled mos pipe second group discrete time gap in the conducting corresponding with under-voltage battery, and inductance is charged to under-voltage battery; First group of discrete time gap and second group of discrete time gap non-overlapping copies.First group of discrete time gap and second group of discrete time gap refer under PWM modulation control pattern the time of switching tube conducting and cut-off in the same cycle, belong to the ordinary skill in the art, do not repeat them here.
C: whether the voltage difference of control chip two batteries in same sub-active equalization circuit by calculating is higher than the poor threshold value of predeterminated voltage, judge whether battery pack occurs imbalance in charging process, if battery pack, in the constant current charge stage, imbalance and control chip occurs, judge a certain battery and in constant current charge process, occur the lower situation of voltage, enter step D; If battery pack is judged a certain battery in constant voltage charge stage and control chip, in constant current charge process, there is voltage higher shape condition, enter step e; Whether constant current charge stage and constant voltage charge stage can be greater than end of charge voltage by the voltage in constant current charge process and distinguish judgement, belong to the ordinary skill in the art, do not repeat them here.
When battery pack is at constant current charge in the stage, if the voltage difference of two batteries in same sub-active equalization circuit during higher than the poor threshold value of predeterminated voltage, judges that battery pack in the stage, imbalance occurs at constant current charge;
When battery pack is in the constant voltage charge stage, if the voltage of a certain battery during higher than default monoblock battery voltage threshold, there is imbalance in the judgement battery pack constant voltage charge stage.
D: control chip is controlled active equalization circuit work and realized active equalization, utilizes the battery lower with voltage another piece battery in same sub-active equalization circuit to charge to the lower battery of voltage, until the lower cell voltage of voltage reached pressure point; Cross voltage difference that pressure point refers to two batteries in active equalization circuit that point till lower than the poor threshold value of predeterminated voltage, belong to the ordinary skill in the art, do not repeat them here.
The step that realizes active equalization is: first control module controls the corresponding mos pipe conducting in first group of discrete time gap of the voltage higher battery of the battery lower with voltage in same sub-active equalization circuit, makes the higher battery of voltage to the inductive energy storage in sub-active equalization circuit; Then control module is controlled mos pipe second group discrete time gap in the conducting corresponding with under-voltage battery, and inductance is charged to under-voltage battery; First group of discrete time gap and second group of discrete time gap non-overlapping copies.
E: control chip is controlled passive equalizing circuit work and realized passive equilibrium, utilizes the passive equalizing circuit of son that the battery higher with voltage is connected to discharge to the higher battery of voltage, until the higher cell voltage of voltage is consistent with other cell voltages in battery pack;
The step that realizes passive equilibrium is: the mos pipe conducting in the passive equalizing circuit of son that the control module control battery higher with voltage is connected, the energy consumption resistor that utilizes the battery higher with voltage to connect discharges.
In the utility model, utilize control chip judge battery pack in discharge regime or charging stage, judge whether battery pack occurs imbalance in charging and discharging process, all belongs to ripe prior art, does not repeat them here.
The utility model starts active equalization when battery power discharge, closes passive equilibrium.Energy loss in the time of can reducing battery pack balancing so on the one hand, outputs to load end by maximum electric currents; On the other hand, because the euqalizing current of active equalization is larger, can within the relatively short time, to the lower battery of voltage, mend electricity, increase as far as possible for a long time flying power.When battery power discharge is extremely under-voltage, active equalization finishes.
The utility model is when batteries charging, in the constant current charge stage, first using active equalization to carry out first stage energy to battery moves, when cell voltage approached pressure point, battery charge reduces, proceed to gradually constant voltage charge process, now close active equalization, enable passive equilibrium, at charging end, carrying out second stage energy moves, can eliminate the impact that active equalization causes battery voltage sampling on the one hand, eliminate the interference that the energy-storage travelling wave tubes such as inductance produce under high-frequency switching signal, can control more accurately charging overvoltage thresholding simultaneously, thereby the capacity of battery is consistent more accurately.The active-passive that the utility model provides is worked in coordination with mixed equilibrium method and equalizing circuit, takes full advantage of the advantage of single equilibrium mode, has made up the deficiency of single equilibrium mode, has realized the optimization of balanced efficiency.
Claims (3)
1. the collaborative mixed equilibrium circuit of the active-passive of series-connected batteries, is characterized in that: the collaborative mixed equilibrium circuit of described active-passive comprises active equalization circuit, passive equalizing circuit and control chip;
Described active equalization circuit comprises active equalization driver element and the many groups of sub-active equalization circuits that charge each other for controlling adjacent two batteries; Every group of sub-active equalization circuit includes two power amplified drive circuits and two mos pipes, and the output of the first power amplified drive circuit in every group of sub-active equalization circuit connects the grid of a mos pipe, and a mos pipe adopts N raceway groove mos pipe; The output of the second power amplified drive circuit in every group of sub-active equalization circuit connects the grid of the 2nd mos pipe, and the 2nd mos pipe adopts P raceway groove mos pipe; The source electrode of the one mos pipe connects the negative pole of the first battery in adjacent two batteries of controlling, the drain electrode of the one mos pipe connects the source electrode of the 2nd mos pipe, the drain electrode of the 2nd mos pipe connects the positive pole of the second battery in adjacent two batteries of controlling, the first end of inductance connects the drain electrode of a mos pipe, the second end of inductance connects the positive pole of the first battery in adjacent two batteries, between the source electrode of the one mos pipe and drain electrode, be parallel with the first diode, the positive pole of the first diode connects the source electrode of a mos pipe; Between the source electrode of the 2nd mos pipe and drain electrode, be parallel with the second diode, the positive pole of the second diode connects the source electrode of the 2nd mos pipe; The signal output part of control chip connects the signal input part of active equalization driver element, and the signal output part of active equalization driver element connects respectively the input of the first power amplified drive circuit and the second power amplified drive circuit in every group of sub-active equalization circuit;
Described passive equalizing circuit comprises that passive balanced drive unit, shift register and many groups are for controlling the passive equalizing circuit of son of each battery discharge; Every group of passive equalizing circuit of son includes the 3rd mos pipe and the energy consumption resistor of connecting with controlled battery; The signal output part of control chip connects the signal input part of passive balanced drive unit, the signal output part of passive balanced drive unit connects the signal input part of shift register, and the signal output part of shift register connects respectively the grid of the 3rd mos pipe in every group of passive equalizing circuit of son.
2. the active-passive of series-connected batteries according to claim 1 is worked in coordination with mixed equilibrium circuit, it is characterized in that: described the first power amplified drive circuit and the second power amplified drive circuit all adopt mutual symmetry amplification driving circuit, the first power amplified drive circuit comprises the first triode and the second triode, the first triode adopts positive-negative-positive triode, the second triode adopts NPN type triode, the base stage of the first triode is connected with the base stage of the second triode, the collector electrode of the first triode connects the emitter of the second triode, the base stage of the base stage of the first triode and the second triode is connected the grid of a mos pipe jointly by the first electric capacity, the emitter of the first triode connects the positive pole of the first diode, the collector electrode of the second triode connects the negative pole of the second diode, the second power amplified drive circuit comprises the 3rd triode and the 4th triode, the 3rd triode adopts positive-negative-positive triode, the 4th triode adopts NPN type triode, the base stage of the 3rd triode is connected with the base stage of the 4th triode, the collector electrode of the 3rd triode connects the emitter of the 4th triode, the base stage of the base stage of the 3rd triode and the 4th triode is connected the grid of the 2nd mos pipe jointly by the second electric capacity, the emitter of the 3rd triode connects the positive pole of the first diode, and the collector electrode of the 4th triode connects the negative pole of the second diode.
3. the collaborative mixed equilibrium circuit of the active-passive of series-connected batteries according to claim 2, is characterized in that: the signal output part of described active equalization driver element is respectively by inverter and the corresponding input that is connected the first power amplified drive circuit and the second power amplified drive circuit in every group of sub-active equalization circuit of optocoupler; The signal output part of shift register is respectively by the corresponding grid that connects the 3rd mos pipe in every group of passive equalizing circuit of son of optocoupler.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420392681.6U CN203942320U (en) | 2014-07-16 | 2014-07-16 | The collaborative mixed equilibrium circuit of active-passive of series-connected batteries |
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| CN201420392681.6U CN203942320U (en) | 2014-07-16 | 2014-07-16 | The collaborative mixed equilibrium circuit of active-passive of series-connected batteries |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135047A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Active and passive synergic hybrid equalization circuit of series storage battery pack, and equalization method |
| CN104410117A (en) * | 2014-11-21 | 2015-03-11 | 昆明理工大学 | Topological circuit of charging and discharging equalizer for novel storage battery set and control method thereof |
-
2014
- 2014-07-16 CN CN201420392681.6U patent/CN203942320U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135047A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Active and passive synergic hybrid equalization circuit of series storage battery pack, and equalization method |
| WO2016008253A1 (en) * | 2014-07-16 | 2016-01-21 | 国家电网公司 | Active and passive synergic hybrid equalization circuit of series storage battery pack and equalization method thereof |
| CN104135047B (en) * | 2014-07-16 | 2016-08-03 | 国家电网公司 | The active-passive of series-connected batteries works in coordination with mixed equilibrium circuit and equalization methods |
| CN104410117A (en) * | 2014-11-21 | 2015-03-11 | 昆明理工大学 | Topological circuit of charging and discharging equalizer for novel storage battery set and control method thereof |
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