CN214850580U - Inductance voltage-regulator tube battery equalization circuit - Google Patents
Inductance voltage-regulator tube battery equalization circuit Download PDFInfo
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- CN214850580U CN214850580U CN202121252826.9U CN202121252826U CN214850580U CN 214850580 U CN214850580 U CN 214850580U CN 202121252826 U CN202121252826 U CN 202121252826U CN 214850580 U CN214850580 U CN 214850580U
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Abstract
The utility model discloses an inductance voltage regulator tube battery equalizer circuit relates to battery management technical field, this inductance voltage regulator tube battery equalizer circuit, include: a battery module for storing electrical energy; the multi-energy storage battery discharging module is used for discharging the batteries with excessive energy storage; the less-energy-storage battery charging module is used for charging the battery with less energy storage; the voltage stabilizing tube balancing module is used for performing voltage stabilizing tube energy consumption on the battery with excessive energy storage; compared with the prior art, the beneficial effects of the utility model are that: the utility model controls the working state of the voltage stabilizing tube by adding the combination switch of the MOS tube and the diode; the breakdown voltage of the voltage-stabilizing tube is set to be the lowest limit of the working voltage of the single battery, so that the balance of the working voltage of the single battery in the whole range is realized; meanwhile, a voltage stabilizing tube is used for passive equalization to make up for the defects of an inductance active equalization scheme at the moment; the whole circuit is simple in design, easy to realize and ideal in balancing effect.
Description
Technical Field
The utility model relates to a battery management technology field specifically is an inductance voltage regulator tube battery equalizer circuit.
Background
The voltage stabilizing tube method is characterized in that breakdown voltage is set as battery balancing target voltage, the battery voltage is larger than the voltage of the voltage stabilizing tube and can cause breakdown, so that discharge current of a battery monomer flows through the voltage stabilizing tube, the voltage of the battery monomer is gradually reduced to the balancing target voltage along with the continuation of the discharge process of the battery, the battery flowing through the voltage stabilizing tube is gradually reduced, and finally when the voltage of the battery monomer reaches the balancing target value, the voltage stabilizing tube is cut off in the reverse direction, and the discharge of the battery monomer is stopped.
The inductance active equalization is an active equalization scheme for managing two batteries (lithium iron phosphate, lithium titanate, ternary batteries and lead-acid), and mainly has the functions of judging the charge state difference between two adjacent batteries, and transferring the redundant electric quantity of the battery with a high SOC state to the battery with a low SOC state by an equalization module in a mode of switching a power supply according to the result of an equalization algorithm, so that the capacity of the battery is maximized, and the cycle life of a battery pack is prolonged.
The voltage stabilizing tube method has the defects that in the process of achieving the balanced target voltage of the single battery, all discharge current flows through the voltage stabilizing tube, and energy is completely consumed on the voltage stabilizing tube, so that the voltage stabilizing tube generates heat and energy is seriously wasted; the main disadvantage of the inductance active equalization method is that when the voltage difference of each cell in the battery pack is small, large current equalization cannot be completed, the equalization effect is not ideal, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an inductance voltage regulator tube battery equalizer circuit to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an inductance regulator tube battery equalization circuit, comprising:
a battery module for storing electrical energy;
the multi-energy storage battery discharging module is used for discharging the batteries with excessive energy storage;
the less-energy-storage battery charging module is used for charging the battery with less energy storage;
the voltage stabilizing tube balancing module is used for performing voltage stabilizing tube energy consumption on the battery with excessive energy storage;
the first end of the battery module is connected with the multi-energy-storage battery discharging module, the second end of the battery module is connected with the less-energy-storage battery charging module, and the third end of the battery module is connected with the voltage-stabilizing-tube balancing module.
As a further aspect of the present invention: the battery module is composed of a battery BnAnd battery Bn+1And battery Bn+2Is composed of a battery BnPositive electrode of (2) is connected with battery Bn+1Negative electrode of, battery Bn+1Positive electrode of (2) is connected with battery Bn+2The negative electrode of (1).
As a further aspect of the present invention: the multi-energy storage battery discharging module is composed of MOS (metal oxide semiconductor) tubes QnMOS transistor Qn+4Diode DnDiode Dn+4Formed of a MOS transistor QnS pole of battery BnCathode of (2), diode DnAnode of (2), MOS tube QnD pole connection inductance LnDiode DnNegative electrode of (1), inductor LnIs connected with a battery B at the other endnAnode of (2), MOS tube Qn+4S pole of battery Bn+1Cathode of (2), diode Dn+4Anode of (2), MOS tube Qn+4D pole connection inductance Ln+1Diode Dn+4Negative electrode of (1), inductor Ln+1Is connected with a battery B at the other endn+1The positive electrode of (1).
As a further aspect of the present invention: the charging module of the less energy storage battery consists of a MOS tube Qn+2MOS transistor Qn+6Diode Dn+2Diode Dn+6Formed of a MOS transistor Qn+2D pole of battery Bn+1Anode of (2), diode Dn+2Negative electrode of MOS transistor Qn+2S pole connection inductor LnDiode Dn+2Anode of (2), MOS tube Qn+6D pole of battery Bn+2Anode of (2), diode Dn+6Negative electrode of MOS transistor Qn+6S pole connection inductor Ln+1Diode Dn+6The positive electrode of (1).
As a further aspect of the present invention: the voltage stabilizing tube balance module comprises an MOS tube Qn+1MOS transistor Qn+3MOS transistor Qn+5MOS transistor Qn+7Diode Dn+1Diode Dn+3Diode Dn+5Diode Dn+7And a voltage stabilizing tube ZnAnd a voltage stabilizing tube Zn+1And a voltage stabilizing tube Zn+2Formed of a MOS transistor Qn+1S pole of battery BnCathode of (2), diode Dn+1Anode of (2), MOS tube Qn+1D pole of the diode Dn+1Negative electrode of (2), voltage stabilizing tube ZnAnode of (2), stabilivolt ZnNegative electrode of the voltage stabilizing tube Zn+1Anode of (2), MOS tube Qn+3D pole, diode Dn+3Negative electrode of MOS transistor Qn+3S pole of the diode Dn+3Positive electrode of (1), and battery Bn+1Negative electrode of (2), stabilivolt Zn+1Negative electrode of the voltage stabilizing tube Zn+2Anode of (2), MOS tube Qn+5D pole, diode Dn+5Negative electrode of MOS transistor Qn+5S pole of the diode Dn+5Positive electrode of (1), and battery Bn+2Negative electrode of (2), stabilivolt Zn+2Negative electrode of the MOS transistor Qn+7D pole, diode Dn+7Negative electrode of MOS transistor Qn+7S pole of the diode Dn+7Positive electrode of (1), and battery Bn+2The positive electrode of (1).
Compared with the prior art, the beneficial effects of the utility model are that: the utility model controls the working state of the voltage stabilizing tube by adding the combination switch of the MOS tube and the diode; the breakdown voltage of the voltage-stabilizing tube is set to be the lowest limit of the working voltage of the single battery, so that the balance of the working voltage of the single battery in the whole range is realized; meanwhile, a voltage stabilizing tube is used for passive equalization to make up for the defects of an inductance active equalization scheme at the moment; the whole circuit is simple in design, easy to realize and ideal in balancing effect.
Drawings
Fig. 1 is a schematic diagram of an inductor-regulator cell equalization circuit.
Fig. 2 is a circuit diagram of an inductor regulator cell equalization circuit.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, an inductor regulator cell equalizing circuit includes:
a battery module for storing electrical energy;
the multi-energy storage battery discharging module is used for discharging the batteries with excessive energy storage;
the less-energy-storage battery charging module is used for charging the battery with less energy storage;
the voltage stabilizing tube balancing module is used for performing voltage stabilizing tube energy consumption on the battery with excessive energy storage;
the first end of the battery module is connected with the multi-energy-storage battery discharging module, the second end of the battery module is connected with the less-energy-storage battery charging module, and the third end of the battery module is connected with the voltage-stabilizing-tube balancing module.
In this embodiment: referring to fig. 2, the battery module is composed of a battery BnAnd battery Bn+1And battery Bn+2Is composed of a battery BnPositive electrode of (2) is connected with battery Bn+1Negative electrode of, battery Bn+1Positive electrode of (2) is connected with battery Bn+2The negative electrode of (1).
In this embodiment: referring to fig. 2, the discharging module of the multi-energy storage battery is composed of a MOS transistor QnMOS transistor Qn+4Diode DnDiode Dn+4Formed of a MOS transistor QnS pole of battery BnCathode of (2), diode DnAnode of (2), MOS tube QnD pole connection inductance LnDiode DnNegative electrode of (1), inductor LnIs connected with a battery B at the other endnAnode of (2), MOS tube Qn+4S pole of battery Bn+1Cathode of (2), diode Dn+4Anode of (2), MOS tube Qn+4D pole connection inductance Ln+1Diode Dn+4Negative electrode of (1), inductor Ln+1Is connected with a battery B at the other endn+1The positive electrode of (1).
With a battery Bn+1For example, in battery Bn+1Energy storage ofMultiple time MOS transistor Qn+4Conducting, diode Dn+4Turning off and turning on the battery cell Bn+1And an inductance Ln+1The current direction is battery Bn+1Positive electrode-inductor L ofn+1-MOS transistor Qn+4-battery BnTo battery Bn+1Discharging while charging battery BnCharging while the battery cell Bn+1Part of the electric quantity is stored in the inductor Ln+1In case of battery BnWhen the storage capacity is large, the MOS transistor Q is also enablednConducting, diode DnOff, when charging the next battery (not shown, should be B)n-1) While inductance LnAnd (4) storing energy.
In this embodiment: referring to fig. 2, the charging module of the low energy storage battery comprises a MOS transistor Qn+2MOS transistor Qn+6Diode Dn+2Diode Dn+6Formed of a MOS transistor Qn+2D pole of battery Bn+1Anode of (2), diode Dn+2Negative electrode of MOS transistor Qn+2S pole connection inductor LnDiode Dn+2Anode of (2), MOS tube Qn+6D pole of battery Bn+2Anode of (2), diode Dn+6Negative electrode of MOS transistor Qn+6S pole connection inductor Ln+1Diode Dn+6The positive electrode of (1).
With a battery Bn+1For example, in battery Bn+1When the stored energy is too small, the MOS transistor QnTurn-off, diode Dn+2Conducting and connecting the battery cell Bn+1And an inductance LnInductance LnThe stored electric quantity is transferred to a battery monomer Bn+1In the current direction of the inductor Ln-a diode Dn+2-battery Bn+1The positive electrode of (3) is charged.
In this embodiment: referring to fig. 2, the equalizing module of the voltage regulator is composed of a MOS transistor Qn+1MOS transistor Qn+3MOS transistor Qn+5MOS transistor Qn+7Diode Dn+1Diode Dn+3Diode Dn+5Diode Dn+7And a voltage stabilizing tube ZnAnd a voltage stabilizing tube Zn+1And a voltage stabilizing tube Zn+2Is composed ofMOS transistor Qn+1S pole of battery BnCathode of (2), diode Dn+1Anode of (2), MOS tube Qn+1D pole of the diode Dn+1Negative electrode of (2), voltage stabilizing tube ZnAnode of (2), stabilivolt ZnNegative electrode of the voltage stabilizing tube Zn+1Anode of (2), MOS tube Qn+3D pole, diode Dn+3Negative electrode of MOS transistor Qn+3S pole of the diode Dn+3Positive electrode of (1), and battery Bn+1Negative electrode of (2), stabilivolt Zn+1Negative electrode of the voltage stabilizing tube Zn+2Anode of (2), MOS tube Qn+5D pole, diode Dn+5Negative electrode of MOS transistor Qn+5S pole of the diode Dn+5Positive electrode of (1), and battery Bn+2Negative electrode of (2), stabilivolt Zn+2Negative electrode of the MOS transistor Qn+7D pole, diode Dn+7Negative electrode of MOS transistor Qn+7S pole of the diode Dn+7Positive electrode of (1), and battery Bn+2The positive electrode of (1).
With a battery BnFor example, battery BnAnd battery Bn+1The voltage difference is small, if the inductor is used again to transfer balanced electric quantity, the working efficiency is low, the inductor is closed to actively balance, and the voltage stabilizing tube is opened to passively balance.
The breakdown voltage of the voltage regulator tube is set as the lower limit value of the using voltage range of the single body in the circuit. For example, if the series battery module is a lithium iron phosphate battery, the maximum working voltage range of the single lithium iron phosphate battery is 2.0-3.65V, and the breakdown voltage value of the voltage regulator tube can be set to be 2.0V, so that the voltage regulator tube can start passive equalization as long as a combined switch of an MOS tube and a diode in the series circuit of the voltage regulator tube is turned on. The working state of the voltage stabilizing tube is controlled by a combined switch of an MOS tube and a diode.
Now let diode Dn+3And MOS transistor Qn+1Are simultaneously conducted, diode Dn+1And MOS transistor Qn+3Simultaneously turning off and turning on the battery cell BnAnd a voltage regulator tube ZnThe current direction is battery Bn-a diode Dn+3Stabilivolt Zn-MOS transistor Qn+1-battery Bn-1(not shown in the figure) is a battery Bn-1While charging, the voltage regulator tube ZnStarting passive energy consumption balance; monitoring battery BnWhen the voltage reaches the equilibrium target value, the diode Dn+3And MOS transistor Qn+1Turn off at the same time, no current passes in the circuit, a voltage regulator tube ZnStopping the balance work, and the battery monomer BnThe equalizing voltage of (2) is completed.
The utility model discloses a theory of operation is: the single battery releases electric energy from the battery with excessive energy storage through the multiple energy storage battery discharging module, the battery with insufficient energy storage is supplemented with electric energy through the less energy storage battery charging module, and when the electric energy of the single battery only exceeds the rated electric energy and is less, the battery is discharged through the voltage stabilizing tube balancing module, so that the rated electric energy is achieved.
With a battery BnAnd battery Bn+1For example, when the battery cell BnAnd Bn+1When the voltage difference is large, firstly, the inductor L connected with the voltage difference and the inductor L in parallel is utilizednActively and evenly transferring electric quantity; then the active equalization is carried out until the current single battery BnAnd Bn+1When the voltage difference is small, the active equalization is closed, the combined switch of the MOS tube and the diode is opened, and the voltage stabilizing tube Z connected with the combined switch in parallel is utilizednAnd performing passive equalization until equalization is completed. Most of the electric quantity transfer work between every two adjacent 2 battery monomers is completed by inductance balance, and a small part of the electric quantity of the rest battery monomer with slightly higher voltage is completed by the heating consumption of the voltage stabilizing tube.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. An inductance voltage regulator tube battery equalization circuit is characterized in that:
this inductance-regulator tube battery equalizer circuit includes:
a battery module for storing electrical energy;
the multi-energy storage battery discharging module is used for discharging the batteries with excessive energy storage;
the less-energy-storage battery charging module is used for charging the battery with less energy storage;
the voltage stabilizing tube balancing module is used for performing voltage stabilizing tube energy consumption on the battery with excessive energy storage;
the first end of the battery module is connected with the multi-energy-storage battery discharging module, the second end of the battery module is connected with the less-energy-storage battery charging module, and the third end of the battery module is connected with the voltage-stabilizing-tube balancing module.
2. The battery equalization circuit of claim 1 wherein the battery module is composed of battery BnAnd battery Bn+1And battery Bn+2Is composed of a battery BnPositive electrode of (2) is connected with battery Bn+1Negative electrode of, battery Bn+1Positive electrode of (2) is connected with battery Bn+2The negative electrode of (1).
3. The battery equalization circuit of claim 1 wherein the multiple energy storage battery discharge module comprises a MOS transistor QnMOS transistor Qn+4Diode DnDiode Dn+4Formed of a MOS transistor QnS pole of battery BnCathode of (2), diode DnAnode of (2), MOS tube QnD pole connection inductance LnDiode DnNegative electrode of (1), inductor LnIs connected with a battery B at the other endnAnode of (2), MOS tube Qn+4S pole of battery Bn+1Cathode of (2), diode Dn+4Anode of (2), MOS tube Qn+4D pole connection inductance Ln+1Diode Dn+4Negative electrode of (1), inductor Ln+1Is connected with a battery B at the other endn+1The positive electrode of (1).
4. The battery equalization circuit of claim 3 wherein the less energy storage battery charging module is composed of a MOS transistor Qn+2MOS transistor Qn+6Diode Dn+2Diode Dn+6Formed of a MOS transistor Qn+2D pole of battery Bn+1Anode of (2), diode Dn+2Negative electrode of MOS transistor Qn+2S pole connection inductor LnDiode Dn+2Anode of (2), MOS tube Qn+6D pole of battery Bn+2Anode of (2), diode Dn+6Negative electrode of MOS transistor Qn+6S pole connection inductor Ln+1Diode Dn+6The positive electrode of (1).
5. The battery equalization circuit of claim 1 wherein the zener equalizing module comprises a MOS transistor Qn+1MOS transistor Qn+3MOS transistor Qn+5MOS transistor Qn+7Diode Dn+1Diode Dn+3Diode Dn+5Diode Dn+7And a voltage stabilizing tube ZnAnd a voltage stabilizing tube Zn+1And a voltage stabilizing tube Zn+2Formed of a MOS transistor Qn+1S pole of battery BnCathode of (2), diode Dn+1Anode of (2), MOS tube Qn+1D pole of the diode Dn+1Negative electrode of (2), voltage stabilizing tube ZnAnode of (2), stabilivolt ZnNegative electrode of the voltage stabilizing tube Zn+1Anode of (2), MOS tube Qn+3D pole, diode Dn+3Negative electrode of MOS transistor Qn+3S pole of the diode Dn+3Positive electrode of (1), and battery Bn+1Of the negative electrode, is stablePressing pipe Zn+1Negative electrode of the voltage stabilizing tube Zn+2Anode of (2), MOS tube Qn+5D pole, diode Dn+5Negative electrode of MOS transistor Qn+5S pole of the diode Dn+5Positive electrode of (1), and battery Bn+2Negative electrode of (2), stabilivolt Zn+2Negative electrode of the MOS transistor Qn+7D pole, diode Dn+7Negative electrode of MOS transistor Qn+7S pole of the diode Dn+7Positive electrode of (1), and battery Bn+2The positive electrode of (1).
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