CN114336819A - Two-stage active equalization circuit, method, module and device - Google Patents
Two-stage active equalization circuit, method, module and device Download PDFInfo
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- CN114336819A CN114336819A CN202111374635.4A CN202111374635A CN114336819A CN 114336819 A CN114336819 A CN 114336819A CN 202111374635 A CN202111374635 A CN 202111374635A CN 114336819 A CN114336819 A CN 114336819A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a two-stage active equalization method, which relates to the field of a capacitor battery equalization circuit and comprises the following steps: the first-stage equalizing circuit is used for detecting the voltage of the capacitor battery and starting the first-stage equalizing circuit to discharge and release the voltage when the charging voltage is greater than a preset first threshold value; the secondary equalizing circuit is used for detecting the voltage of the capacitor battery and starting the secondary equalizing circuit to discharge and release the voltage when the charging voltage is greater than a preset second threshold value and the voltage is released through the primary equalizing circuit; the secondary equalization circuit enables the circuit to form a feedback loop by taking the first one-to-three resistor as a feedback resistor of the circuit, feeds voltage values of the first one-to-five resistor and the first one-to-six resistor back to the first one-to-one resistor, controls the on-off of the first one-to-one zero voltage comparator through the voltage value of the second point of the first one-to-one zero voltage comparator after voltage division is carried out through the first one-to-one resistor, and solves the problem that the capacitor battery cannot be fully charged and discharged due to pressure difference accumulation in the charging and discharging process.
Description
Technical Field
The invention relates to the field of capacitor battery equalization circuits, in particular to a secondary active equalization circuit, a method, a module and a device.
Background
As a new energy storage device, a capacitor battery has been applied to the fields of rail transit, petroleum machinery, special equipment, and the like. The super-energy storage battery has super-energy storage capacity, and compared with the traditional battery, the super-energy storage battery has the characteristics of high reversibility, super-long service life (capability of repeatedly charging and discharging for 3 ten thousand times), super-high output and input power, wide voltage range and working temperature range, and the like. Compared with the conventional electrolytic capacitor, the energy density is high, and the leakage current is smaller by several orders of magnitude. It combines the high energy storage characteristics of the battery and the high power output characteristics of the capacitor. The application of the capacitor battery in various fields is already promoted, but the capacitor battery is not developed in the UPS field and is limited by factors such as electrical topology design, total weight and cost. The secondary active equalization device of the invention is used as a UPS standby power supply, effectively solves the problems in terms of the design of the internal circuit of the device, and has important use value.
The 230VAC AC UPS of the wind generating set mainly comprises an inverter, an energy storage element, a rectifier/charger, a change-over switch and the like. Up to now, lead-acid batteries are still commonly used in UPS energy storage elements in the existing market. The lead-acid battery has some advantages as a main energy storage device, such as low price, high safety, good high and low temperature performance, mature technology and the like. But gradually find some disadvantages difficult to overcome in the using process: the lead-acid battery has low energy density, low conversion efficiency and short cycle life (generally about 400 times), which causes that the lead-acid battery needs to be replaced and maintained regularly, while the wind turbine generator is generally positioned in a remote area, the variable pitch system is arranged on a fan with the height of 100 meters, and each maintenance needs to bear higher cost, so that the maintenance cost is too high; in addition, lead-acid batteries are not environmentally friendly and also have the risk of lead pollution.
In addition, the UPS of the wind driven generator is an important part for ensuring the unit to have a low-penetration function, and when the voltage of a power grid suddenly drops, the UPS continuously supplies power so that the wind driven generator has the capacity of keeping the wind driven generator from being disconnected for a period of time. Once power grid fluctuation occurs, if the fan does not have low voltage ride through, the whole fan is disconnected at the same time, and larger fluctuation of the power grid is caused, so that a large-area power failure accident is caused. Meanwhile, when the power grid fails, the wind turbine generator UPS continuously supplies power to the system, and the danger of fan runaway is avoided. The UPS plays an important role in stable operation of the fan and accident avoidance, and the good function of the UPS and the sufficient capacity of the battery of the UPS are guaranteed to be of great importance to the unit.
The invention designs a secondary active equalization circuit, a method, a module and a device, and solves the problems of quick charge and service life of a capacitor battery by applying the secondary active equalization circuit in a capacitor battery protection system, and solves the problem of insufficient charge and discharge caused by pressure difference accumulation in the charge and discharge processes of the capacitor battery by the secondary active equalization circuit. The UPS standby power supply device using the capacitor battery in a group has high integration level and long service life, increases the reliability of the whole life cycle of the fan, and reduces the cost problem caused by frequent maintenance.
Disclosure of Invention
In order to solve the problem that the existing wind driven generator UPS power supply is in a floating charge state for a long time, and a capacitor battery is not fully charged and discharged due to pressure difference accumulation in the charging and discharging processes, the invention provides a secondary active equalization circuit, which comprises:
the first-stage equalizing circuit is used for detecting the voltage of the capacitor battery and starting the first-stage equalizing circuit to discharge and release the voltage when the charging voltage is greater than a preset first threshold value;
the secondary equalizing circuit is used for detecting the voltage of the capacitor battery and starting the secondary equalizing circuit to discharge and release the voltage when the charging voltage is greater than a preset second threshold value and the voltage is released through the primary equalizing circuit;
the power supply input end of the first-stage equalizing circuit is connected with a negative power supply, and is simultaneously connected with one end of a tenth capacitor and an eleventh resistor and a third end of a tenth voltage comparator, the other end of the tenth capacitor and the eleventh resistor and the second end of the tenth voltage comparator are connected to one end of a tenth resistor, and the first end of the tenth voltage comparator is connected with a positive power supply through the twelfth resistor, the thirteenth resistor and the tenth resistor as the power supply output end of the first-stage equalizing circuit;
the power supply input end of the second-level equalization circuit is connected with a negative power supply and is simultaneously connected with one end of a first zero capacitor, a first one-to-one resistor, a first five-to-one resistor, one end of a first six-to-one resistor and a third end of a first zero voltage comparator, the other ends of the first zero capacitor, the first one-to-one resistor and the first zero voltage comparator are connected to one end of the first zero resistor, the other ends of the first five resistor and the first six-to-one resistor are simultaneously connected with a collector of a first zero triode and one end of a first one-to-three resistor, the other end of the first one-to-three resistor is connected to the second end of the first zero voltage comparator, and a base of the first zero triode is connected to the first end of the first zero voltage comparator through a first one-to-four resistor; the third end of the first one-to-one zero voltage comparator is also connected with one end of a first one-to-two resistor; the first one-to-zero resistor, the other end of the first one-to-two resistor and the emitter of the first one-to-zero triode are used as the power output end of the second-stage equalization circuit and are connected with the positive power supply;
and a first capacitor is connected between the positive power supply and the negative power supply.
The invention also provides a two-stage active equalization method, which comprises the following steps:
dividing the voltage between the cathode power supply and the anode power supply through a tenth resistor and an eleventh resistor; when the voltage value of the voltage division point, namely the second point of the tenth voltage comparator, is greater than the first threshold value of the tenth voltage comparator, a channel from the third point of the tenth voltage comparator to the first point is conducted, so that the voltage is relieved through the twelfth resistor and the thirteenth resistor;
dividing the voltage between the cathode power supply and the anode power supply through a first one-to-one zero resistor and a first one-to-one resistor; when the voltage value of the second point of the first one-to-zero voltage comparator, namely the voltage value of the second point of the first one-to-zero voltage comparator, is greater than the second threshold value of the first one-to-zero voltage comparator, a channel from the third point of the first one-to-zero voltage comparator to the first point is conducted, at the moment, when the voltage of the first one-to-four resistor is lower than the voltage of the positive electrode of the power supply, the first one-to-zero triode is conducted so as to be decompressed through the first five resistor and the first six resistor, the voltage values of the first one-to-five resistor and the first six resistor are fed back to the first one resistor through the first one-to-three resistor, and after the voltage is divided through the first one resistor, the on-off of the first one-to-zero voltage comparator is controlled through the voltage value of the second point of the first one-to-zero voltage comparator again.
The invention also provides a two-stage active equalization module, which comprises:
the PCB comprises a PCB circuit board, a bottom shell, an upper cover and a capacitor battery module, wherein the capacitor battery module is fixed between the bottom shell and the upper cover; the capacitor battery module is provided with a PCB (printed circuit board);
the PCB circuit board comprising the two-stage active equalization circuit of claim 1.
Further, the two-stage active equalization module further comprises:
and the plurality of protective plates are arranged around the capacitor battery module.
Further, the capacitor battery module comprises a plurality of capacitor battery monomers, and foam between the battery cores is arranged between the monomers.
The invention also provides a two-stage active equalization device, comprising:
a plurality of secondary active equalization modules, support plates, support frames as claimed in any of claims 3 to 5; and each secondary active equalization module is arranged between the supporting plate and the supporting frame.
Furthermore, the two-stage active equalization modules are connected through copper bar connecting pieces.
The invention also provides a UPS energy storage device of the fan generator set, which comprises: the two-stage active equalization apparatus of claims 6-7;
when the fan generator set is powered off, the power supply of the fan generator set is switched to the secondary active balancing device from the AC/DC to supply power.
Compared with the prior art, the invention at least has the following beneficial effects:
(1) in the first-stage equalizing circuit, the voltage between the cathode power supply and the anode power supply is divided by the tenth resistor and the eleventh resistor; when the voltage value of the voltage division point, namely the second point of the tenth voltage comparator, is greater than the first threshold value of the tenth voltage comparator, a channel from the third point of the tenth voltage comparator to the first point is conducted, so that the voltage is relieved through the twelfth resistor and the thirteenth resistor; the voltage change condition between the positive power supply and the negative power supply is measured by arranging the tenth resistor and the eleventh resistor which are connected in series, and the tenth voltage comparator is conducted to carry out pressure relief when the voltage between the positive power supply and the negative power supply is flexibly controlled by arranging the resistors with different resistance values at the two positions (if the tenth resistor and the eleventh resistor are not arranged, the voltage of the third point of the tenth voltage comparator is always consistent with that of the first point, so that the voltage change condition between the positive power supply and the negative power supply cannot be measured, and the on-off state of the tenth voltage comparator cannot be controlled, wherein a voltage difference exists between the third point and the second point of the tenth voltage comparator, and the voltage difference is an inherent threshold value of the tenth voltage comparator);
in the secondary equalizing circuit, when the voltage between the negative power supply and the positive power supply is greater than a preset second threshold value, the secondary equalizing circuit is started to discharge and release the voltage while the primary equalizing circuit releases the voltage; the first-to-third resistor is used as a feedback resistor of the circuit to enable the circuit to form a feedback loop, the voltage values of the first-to-fifth resistor and the first-to-sixth resistor are fed back to the first-to-first resistor, after voltage division is carried out through the first-to-first resistor, the on-off state of the first-to-zero voltage comparator is controlled through the voltage value of the second point of the first-to-zero voltage comparator again (if the feedback resistor is not arranged, the circuit is discharged and stopped, the circuit cannot carry out timely voltage feedback, and therefore flexible and continuous pressure relief cannot be carried out), and in the continuous feedback process, the first-to-zero triode can be conducted to saturation to achieve the maximum discharge capacity and discharge rapidly;
(2) the capacitor battery protection system is provided with the primary equalizing circuit and the secondary equalizing circuit, and the voltage feedback loop is realized in the secondary equalizing circuit, so that double electricity discharge is realized, the problem that the capacitor battery is not fully charged and discharged due to pressure difference accumulation in the charging and discharging process under the floating charge state for a long time is solved, and the service life of the capacitor battery is prolonged;
(3) according to the invention, the secondary active balancing module is integrated and assembled into the secondary active balancing device, and the secondary active balancing device replaces a lead-acid battery in the standby power supply of the wind generating set, so that the advantages of high power and long service life of a capacitor battery are exerted to the maximum extent, and the maintenance cost of an energy storage element of the wind generating set in the whole service life cycle is reduced.
Drawings
FIG. 1 is a circuit diagram of a two-stage active equalization circuit;
FIG. 2 is a block diagram of a two-stage active equalization module;
fig. 3 is a device configuration diagram of a two-stage active equalization device.
In the figure:
1. a bottom case; 2. an upper cover; 3. a capacitor battery cell; 4. a PCB circuit board; 5. foam between the battery cores; 6. a protection plate; 7. a support plate; 8. a support frame; 9. a secondary active equalization module; 10. copper bar connecting piece.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
The invention solves the problems of quick charge and service life of the capacitor battery by designing a secondary active equalization circuit applied to a capacitor battery protection system, and solves the problem of insufficient charge and discharge caused by pressure difference accumulation in the charge and discharge processes of the capacitor battery by the secondary active equalization circuit. Use this UPS stand-by power supply device of electric capacity battery in groups as fan generating set's UPS power energy memory, its integrated level is high, long service life has increased fan life cycle's reliability, and has reduced the cost problem that frequent maintenance brought, in addition, can also realize the feathering of fan paddle and PLC's the operation that continuously gets electricity, and the electric capacity battery who is full of electricity can realize heavy current high power output, satisfies the feathering of paddle and PLC and continuously operates.
As shown in fig. 1, the present invention provides a two-stage active equalization circuit, comprising:
the first-stage equalizing circuit is used for detecting the voltage of the capacitor battery and starting the first-stage equalizing circuit to discharge and release the voltage when the charging voltage is greater than a preset first threshold value;
the secondary equalizing circuit is used for detecting the voltage of the capacitor battery and starting the secondary equalizing circuit to discharge and release the voltage when the charging voltage is greater than a preset second threshold value and the voltage is released through the primary equalizing circuit;
the power supply input end of the first-stage equalizing circuit is connected with a negative power supply, and is simultaneously connected with one end of a tenth capacitor and an eleventh resistor and a third end of a tenth voltage comparator, the other end of the tenth capacitor and the eleventh resistor and the second end of the tenth voltage comparator are connected to one end of a tenth resistor, and the first end of the tenth voltage comparator is connected with a positive power supply through the twelfth resistor, the thirteenth resistor and the tenth resistor as the power supply output end of the first-stage equalizing circuit;
the power supply input end of the second-level equalization circuit is connected with a negative power supply and is simultaneously connected with one end of a first zero capacitor, a first one-to-one resistor, a first five-to-one resistor, one end of a first six-to-one resistor and a third end of a first zero voltage comparator, the other ends of the first zero capacitor, the first one-to-one resistor and the first zero voltage comparator are connected to one end of the first zero resistor, the other ends of the first five resistor and the first six-to-one resistor are simultaneously connected with a collector of a first zero triode and one end of a first one-to-three resistor, the other end of the first one-to-three resistor is connected to the second end of the first zero voltage comparator, and a base of the first zero triode is connected to the first end of the first zero voltage comparator through a first one-to-four resistor; the third end of the first one-to-one zero voltage comparator is also connected with one end of a first one-to-two resistor; the first one-to-zero resistor, the other end of the first one-to-two resistor and the emitter of the first one-to-zero triode are used as the power output end of the second-stage equalization circuit and are connected with the positive power supply;
and a first capacitor is connected between the positive power supply and the negative power supply.
In fig. 1, the negative power supply is represented by V — and the negative power supply is represented by V +.
According to the invention, the primary equalizing circuit and the secondary equalizing circuit are arranged in the protection system of the capacitor battery, and the voltage feedback loop is realized in the secondary equalizing circuit, so that double electricity discharge is realized, the problem that the capacitor battery cannot be fully charged and discharged due to pressure difference accumulation in the charging and discharging processes is solved, and the service life of the capacitor battery is prolonged.
Example two
The invention also provides a two-stage active equalization method, which comprises the following steps:
dividing the voltage between the cathode power supply and the anode power supply through a tenth resistor and an eleventh resistor; when the voltage value of the voltage division point, namely the second point of the tenth voltage comparator, is greater than the first threshold value of the tenth voltage comparator, a channel from the third point of the tenth voltage comparator to the first point is conducted, so that the voltage is relieved through the twelfth resistor and the thirteenth resistor;
dividing the voltage between the cathode power supply and the anode power supply through a first one-to-one zero resistor and a first one-to-one resistor; when the voltage value of the second point of the first one-to-zero voltage comparator, namely the voltage value of the second point of the first one-to-zero voltage comparator, is greater than the second threshold value of the first one-to-zero voltage comparator, a channel from the third point of the first one-to-zero voltage comparator to the first point is conducted, at the moment, when the voltage of the first one-to-four resistor is lower than the voltage of the positive electrode of the power supply, the first one-to-zero triode is conducted so as to be decompressed through the first five resistor and the first six resistor, the voltage values of the first one-to-five resistor and the first six resistor are fed back to the first one resistor through the first one-to-three resistor, and after the voltage is divided through the first one resistor, the on-off of the first one-to-zero voltage comparator is controlled through the voltage value of the second point of the first one-to-zero voltage comparator again.
In the first-stage equalizing circuit, the voltage between the cathode power supply and the anode power supply is divided by the tenth resistor and the eleventh resistor; when the voltage value of the voltage division point, namely the second point of the tenth voltage comparator, is greater than the first threshold value of the tenth voltage comparator, a channel from the third point of the tenth voltage comparator to the first point is conducted, so that the voltage is relieved through the twelfth resistor and the thirteenth resistor; the voltage change condition between the positive power supply and the negative power supply is measured by arranging the tenth resistor and the eleventh resistor which are connected in series, and the tenth voltage comparator is conducted to carry out pressure relief when the voltage between the positive power supply and the negative power supply is flexibly controlled by arranging the resistors with different resistance values at the two positions (if the tenth resistor and the eleventh resistor are not arranged, the voltage of the third point of the tenth voltage comparator is always consistent with that of the first point, so that the voltage change condition between the positive power supply and the negative power supply cannot be measured, and the on-off state of the tenth voltage comparator cannot be controlled, wherein a voltage difference exists between the third point and the second point of the tenth voltage comparator, and the voltage difference is an inherent threshold value of the tenth voltage comparator);
in the secondary equalizing circuit, when the voltage between the negative power supply and the positive power supply is greater than a preset second threshold value, the secondary equalizing circuit is started to discharge and release the voltage while the primary equalizing circuit releases the voltage; the first-to-third resistor is used as a feedback resistor of the circuit to enable the circuit to form a feedback loop, the voltage values of the first-to-fifth resistor and the first-to-sixth resistor are fed back to the first-to-first resistor, after voltage division is carried out through the first-to-first resistor, the on-off state of the first-to-zero voltage comparator is controlled through the voltage value of the second point of the first-to-zero voltage comparator again (if the feedback resistor is not arranged, the circuit is discharged and stopped, the circuit cannot carry out timely voltage feedback, and therefore flexible and continuous pressure relief cannot be carried out), and in the continuous feedback process, the first-to-zero triode can be conducted to saturation to achieve the maximum discharge capacity and discharge rapidly;
according to the invention, the primary equalizing circuit and the secondary equalizing circuit are arranged in the protection system of the capacitor battery, and the voltage feedback loop is realized in the secondary equalizing circuit, so that double electricity discharge is realized, the problem that the capacitor battery cannot be fully charged and discharged due to pressure difference accumulation in the charging and discharging processes is solved, and the service life of the capacitor battery is prolonged.
EXAMPLE III
As shown in fig. 2, the present invention further provides a two-stage active equalization module, including:
the PCB comprises a PCB circuit board, a bottom shell, an upper cover and a capacitor battery module, wherein the capacitor battery module is fixed between the bottom shell and the upper cover; the capacitor battery module is provided with a PCB (printed circuit board);
the PCB circuit board comprising the two-stage active equalization circuit of claim 1.
The secondary active equalization module further comprises:
and the plurality of protective plates are arranged around the capacitor battery module.
The capacitor battery module comprises a plurality of capacitor battery monomers, and foam between the battery cores is arranged between the monomers.
The PCB is welded with the single bodies through the lugs of the single bodies; the bottom shell is fixedly connected with the upper cover.
Example four
As shown in fig. 3, the present invention further provides a two-stage active equalization apparatus, including:
a plurality of secondary active equalization modules, support plates, support frames as claimed in any of claims 3 to 5; and each secondary active equalization module is arranged between the supporting plate and the supporting frame.
And the two-stage active equalization modules are connected through copper bar connecting pieces.
According to the invention, the secondary active balancing module is integrated and assembled into the secondary active balancing device, and the secondary active balancing device replaces a lead-acid battery in the standby power supply of the wind generating set, so that the advantages of high power and long service life of a capacitor battery are exerted to the maximum extent, and the maintenance cost of an energy storage element of the wind generating set in the whole service life cycle is reduced.
EXAMPLE five
A UPS power energy storage device of a fan generator set comprises: the two-stage active equalization apparatus of claims 6-7;
when the fan generator set is powered off, the power supply of the fan generator set is switched to the secondary active balancing device from the AC/DC to supply power.
In this embodiment, the two-stage active equalization device converts the DC/DC into a required DC voltage as an input of the inverter, so as to achieve uninterrupted power supply.
The UPS of the wind driven generator is an important part for ensuring that the unit has a low-penetration function, and when the voltage of a power grid suddenly drops, the UPS continuously supplies power so that the wind driven generator has the capacity of keeping the wind driven generator from being disconnected for a period of time. Once power grid fluctuation occurs, if the fan does not have low voltage ride through, the whole fan is disconnected at the same time, and larger fluctuation of the power grid is caused, so that a large-area power failure accident is caused. In the invention, the secondary active balancing module is integrated and assembled into the secondary active balancing device, and the secondary active balancing device replaces a lead-acid battery in a standby power supply of the wind generating set, so that the advantages of high power and long service life of a capacitor battery are exerted to the maximum extent, the maintenance cost of an energy storage element of the wind generating set in the whole life cycle is reduced, and in addition, the UPS (uninterrupted power supply) energy storage device of the wind generating set (the secondary active balancing device) can continuously supply power to the system when the power grid fails, and the risk of fan runaway is avoided.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (8)
1. A two-stage active equalization circuit, comprising:
the first-stage equalizing circuit is used for detecting the voltage of the capacitor battery and starting the first-stage equalizing circuit to discharge and release the voltage when the charging voltage is greater than a preset first threshold value;
the secondary equalizing circuit is used for detecting the voltage of the capacitor battery and starting the secondary equalizing circuit to discharge and release the voltage when the charging voltage is greater than a preset second threshold value and the voltage is released through the primary equalizing circuit;
the power supply input end of the first-stage equalizing circuit is connected with a negative power supply, and is simultaneously connected with one end of a tenth capacitor and an eleventh resistor and a third end of a tenth voltage comparator, the other end of the tenth capacitor and the eleventh resistor and the second end of the tenth voltage comparator are connected to one end of a tenth resistor, and the first end of the tenth voltage comparator is connected with a positive power supply through the twelfth resistor, the thirteenth resistor and the tenth resistor as the power supply output end of the first-stage equalizing circuit;
the power supply input end of the second-level equalization circuit is connected with a negative power supply and is simultaneously connected with one end of a first zero capacitor, a first one-to-one resistor, a first five-to-one resistor, one end of a first six-to-one resistor and a third end of a first zero voltage comparator, the other ends of the first zero capacitor, the first one-to-one resistor and the first zero voltage comparator are connected to one end of the first zero resistor, the other ends of the first five resistor and the first six-to-one resistor are simultaneously connected with a collector of a first zero triode and one end of a first one-to-three resistor, the other end of the first one-to-three resistor is connected to the second end of the first zero voltage comparator, and a base of the first zero triode is connected to the first end of the first zero voltage comparator through a first one-to-four resistor; the third end of the first one-to-one zero voltage comparator is also connected with one end of a first one-to-two resistor; the first one-to-zero resistor, the other end of the first one-to-two resistor and the emitter of the first one-to-zero triode are used as the power output end of the second-stage equalization circuit and are connected with the positive power supply;
and a first capacitor is connected between the positive power supply and the negative power supply.
2. A two-stage active equalization method, comprising the steps of:
dividing the voltage between the cathode power supply and the anode power supply through a tenth resistor and an eleventh resistor; when the voltage value of the voltage division point, namely the second point of the tenth voltage comparator, is greater than the first threshold value of the tenth voltage comparator, a channel from the third point of the tenth voltage comparator to the first point is conducted, so that the voltage is relieved through the twelfth resistor and the thirteenth resistor;
dividing the voltage between the cathode power supply and the anode power supply through a first one-to-one zero resistor and a first one-to-one resistor; when the voltage value of the second point of the first one-to-zero voltage comparator, namely the voltage value of the second point of the first one-to-zero voltage comparator, is greater than the second threshold value of the first one-to-zero voltage comparator, a channel from the third point of the first one-to-zero voltage comparator to the first point is conducted, at the moment, when the voltage of the first one-to-four resistor is lower than the voltage of the positive electrode of the power supply, the first one-to-zero triode is conducted so as to be decompressed through the first five resistor and the first six resistor, the voltage values of the first one-to-five resistor and the first six resistor are fed back to the first one resistor through the first one-to-three resistor, and after the voltage is divided through the first one resistor, the on-off of the first one-to-zero voltage comparator is controlled through the voltage value of the second point of the first one-to-zero voltage comparator again.
3. A two-stage active equalization module, comprising:
the PCB comprises a PCB circuit board, a bottom shell, an upper cover and a capacitor battery module, wherein the capacitor battery module is fixed between the bottom shell and the upper cover; the capacitor battery module is provided with a PCB (printed circuit board);
the PCB circuit board comprising the two-stage active equalization circuit of claim 1.
4. The two-stage active equalization module of claim 3, further comprising:
and the plurality of protective plates are arranged around the capacitor battery module.
5. The two-stage active equalization module of claim 3, wherein the capacitor battery module comprises a plurality of capacitor battery cells, and foam is disposed between the cells.
6. A two-stage active equalization apparatus, comprising:
a plurality of secondary active equalization modules, support plates, support frames as claimed in any of claims 3 to 5; and each secondary active equalization module is arranged between the supporting plate and the supporting frame.
7. The apparatus according to claim 6, wherein the two-stage active equalization modules are connected by copper bar connectors.
8. The utility model provides a fan generating set's UPS power energy memory which characterized in that includes: the two-stage active equalization apparatus of claims 6-7;
when the fan generator set is powered off, the power supply of the fan generator set is switched to the secondary active balancing device from the AC/DC to supply power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111374635.4A CN114336819B (en) | 2021-11-19 | 2021-11-19 | Two-stage active equalization circuit, method, module and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111374635.4A CN114336819B (en) | 2021-11-19 | 2021-11-19 | Two-stage active equalization circuit, method, module and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114336819A true CN114336819A (en) | 2022-04-12 |
| CN114336819B CN114336819B (en) | 2023-10-20 |
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| CN202679029U (en) * | 2012-07-24 | 2013-01-16 | 国网电力科学研究院武汉南瑞有限责任公司 | Voltage equalizing device of supercapacitor series connection module |
| CN103066648A (en) * | 2012-12-17 | 2013-04-24 | 上海大学 | Battery driving equalization circuit |
| WO2014115200A1 (en) * | 2013-01-24 | 2014-07-31 | 三菱電機株式会社 | Storage cell equalization device |
| CN106526357A (en) * | 2016-10-17 | 2017-03-22 | 宁波中车新能源科技有限公司 | Capacitor balance detection system in super capacitor module |
| CN107719273A (en) * | 2017-09-15 | 2018-02-23 | 六安市同心畅能电子科技有限公司 | Charging battery of electric vehicle protection circuit |
| CN108512280A (en) * | 2018-05-04 | 2018-09-07 | 厦门芯阳科技股份有限公司 | A kind of series battery equalizing charge controlling circuit and control method |
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| CN202679029U (en) * | 2012-07-24 | 2013-01-16 | 国网电力科学研究院武汉南瑞有限责任公司 | Voltage equalizing device of supercapacitor series connection module |
| CN103066648A (en) * | 2012-12-17 | 2013-04-24 | 上海大学 | Battery driving equalization circuit |
| WO2014115200A1 (en) * | 2013-01-24 | 2014-07-31 | 三菱電機株式会社 | Storage cell equalization device |
| CN106526357A (en) * | 2016-10-17 | 2017-03-22 | 宁波中车新能源科技有限公司 | Capacitor balance detection system in super capacitor module |
| CN107719273A (en) * | 2017-09-15 | 2018-02-23 | 六安市同心畅能电子科技有限公司 | Charging battery of electric vehicle protection circuit |
| CN108512280A (en) * | 2018-05-04 | 2018-09-07 | 厦门芯阳科技股份有限公司 | A kind of series battery equalizing charge controlling circuit and control method |
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| CN114336819B (en) | 2023-10-20 |
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