CN109103955A - Lead-acid accumulator equilibrium and monitoring method and system - Google Patents
Lead-acid accumulator equilibrium and monitoring method and system Download PDFInfo
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- CN109103955A CN109103955A CN201811051611.3A CN201811051611A CN109103955A CN 109103955 A CN109103955 A CN 109103955A CN 201811051611 A CN201811051611 A CN 201811051611A CN 109103955 A CN109103955 A CN 109103955A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 134
- 238000000034 method Methods 0.000 title claims abstract description 60
- 239000002253 acid Substances 0.000 title claims abstract description 36
- 239000000178 monomer Substances 0.000 claims description 108
- 238000004891 communication Methods 0.000 claims description 42
- 230000005611 electricity Effects 0.000 claims description 30
- 238000009413 insulation Methods 0.000 claims description 18
- 238000005303 weighing Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 19
- 238000007599 discharging Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000153 supplemental effect Effects 0.000 abstract 1
- 238000003860 storage Methods 0.000 description 18
- 238000012423 maintenance Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000006399 behavior Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
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- 238000010276 construction Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
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- 238000005070 sampling Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
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- 241001269238 Data Species 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- H02J7/0021—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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Abstract
The present invention discloses that a kind of lead-acid accumulator is balanced and monitoring method, include the following steps: to carry out real-time monitoring to the voltage of the single battery of the inactive equalizaing charge in battery group, and the single battery for needing equalizaing charge is determined according to the voltage of the single battery of inactive equalizaing charge, equalizaing charge is started to the single battery for needing equalizaing charge；With real-time monitoring is carried out to the single battery in equalizaing charge, according to the voltage and euqalizing current of the single battery in equalizaing charge, equalizaing charge control is carried out to single battery.The method of the present invention is in charge and discharge process, the single battery low to voltage value carries out personalized and strategyization equalizaing charge, the voltage of all single batteries is set to reach unanimity by the method for supplemental current, to realize the equilibrium of accumulator cell charging and discharging, portfolio effect is good, it is high-efficient, it can significantly extend the service life of single battery.The present invention is also based on that described method provide a kind of lead-acid accumulator is balanced and monitoring system.
Description
Technical field
The invention belongs to battery technology field, it is related to a kind of lead-acid accumulator equilibrium and monitoring method and system.
Background technique
Battery is usually to use the series connection of multiple single batteries afterwards in groups, during charge and discharge, each electric power storage
The charging and discharging currents of pond monomer are all the same.But since each single battery is in manufacture, initial capacity, voltage, internal resistance and temperature
Etc. there are inconsistency, in accumulator charging/discharging process, in the identical situation of charging and discharging currents, easily cause capacity small or
The overcharge of the high single battery of internal resistance and over-discharge electrical phenomena.Overcharge is easy to cause internal temperature of battery and pressure to rise rapidly
Height, makes the damage of battery pair, will appear the safety problems such as battery explosion when serious, and overdischarge easily causes permanently battery
Property damage, influence the service life of battery.
The equilibrium of battery refers in the battery group being made of multiple single batteries, is filling to each single battery
It takes measures on charging method, so that each battery is reached end of charge voltage simultaneously in charging, or arrive simultaneously when electric discharge
Up to final discharging voltage.
The balance control method of accumulator cell charging and discharging is mainly using bidirectional equalization mode at present, by multiple batteries
In battery made of monomer series-connected, a balance module is connected between every two adjacent section monomers, keeps energy higher from voltage
Single battery be transferred to the lower single battery of voltage, so that the voltage of two single batteries is reached unanimity, solve
The unbalanced problem of battery voltage.The balancing procedure of the bidirectional equalization mode is actually the mistake recharged of first discharging
Journey first makes the higher single battery electric discharge of voltage, the electric energy that then will be released from the higher single battery of voltage again
It is filled in the lower single battery of voltage, efficiency is lower.And the euqalizing current of this method is smaller, generally 1~10A, and
During discharge, euqalizing current deficiency still easily leads to the low single battery overdischarge of battery capacity or battery capacity is high
Single battery can not release energy completely.And in the battery equalisation system of use bidirectional equalization mode, single circuit
Damage is likely to affect the operation of whole system.
Summary of the invention
One of the objects of the present invention is to provide a kind of lead-acid accumulator equilibrium and monitoring methods, are asked with solving above-mentioned technology
At least one of topic.
It is another object of the present invention to provide a kind of plumbic acid storage based on above-mentioned lead-acid accumulator equilibrium and monitoring method
At least one of battery balanced and monitoring system, to solve the above technical problems.
According to an aspect of the invention, there is provided a kind of lead-acid accumulator equilibrium and monitoring method, include the following steps:
Real-time monitoring carried out to the voltage of the single battery of the inactive equalizaing charge in battery group, and according to not opening
The voltage of the single battery of dynamic equalizaing charge determines the single battery for needing equalizaing charge, to the battery list for needing equalizaing charge
Body starts equalizaing charge；With
Real-time monitoring is carried out to the single battery in equalizaing charge, according to the voltage of the single battery in equalizaing charge
And euqalizing current, equalizaing charge control is carried out to single battery.
The method of the present invention is using the voltage of single battery as balanced object, by each battery in battery group
The voltage of monomer carries out real-time monitoring, and active to single battery starting according to pre-set equalizaing charge control strategy
Equalizaing charge, active equalizaing charge electric current can be adjusted according to the voltage change for the single battery for needing equalizaing charge, from
And it can be farthest to the single battery supplement electricity for needing equalizaing charge.The method of the present invention is real in charge and discharge process
When monitor the voltage of single battery, personalized and strategyization equalizaing charge is carried out to the lower single battery of voltage value,
Equalizaing charge control, electric power storage are carried out to single battery according to the voltage of single battery and euqalizing current during equalizaing charge
The voltage of pond monomer is different, and euqalizing current is different, so that the voltage of all single batteries is existed by the method for supplementing corresponding electric current
It reaches unanimity in charge and discharge process, so as to increase considerably the battery capacity of cell batteries and prolong its service life.
For the method for the present invention by scene installation test, portfolio effect is good, high-efficient.
In some embodiments, the method for the present invention further includes carrying out in fact to the connection strap temperature on single battery pole
When monitor, so as to by the temperature of connection strap judge during equalizaing charge connection strap whether bad connection, it is convenient in time
Maintenance avoids short circuit from damaging single battery battery core.
In some embodiments, equalizaing charge is needed according to the determination of the voltage of the single battery of inactive equalizaing charge
Single battery is realized are as follows:
Monomer ceiling voltage is obtained according to the voltage of the single battery of inactive equalizaing charge；
According to the voltage difference between monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge, determine
Need the single battery of equalizaing charge.
Thus, it is possible to according to actual needs (such as according to the possible difference of actual single battery resistance or according to reality
Single battery voltage difference situation) setting one voltage difference (referred to as first voltage difference setting value), by comparing monomer
Whether the voltage difference of ceiling voltage and the voltage of the single battery of inactive equalizaing charge, which is not less than first voltage difference, sets
Definite value can accurately, quickly confirm which single battery needs to carry out equalizaing charge, then restart to these storages
The equalizaing charge of battery cell avoids also carrying out equalizaing charge to the single battery for not needing to carry out equalizaing charge.
In some embodiments, according to the voltage and euqalizing current of the single battery in equalizaing charge, to battery
Monomer carries out equalizaing charge control
It is adjusted according to the voltage difference between the voltage of the single battery in monomer ceiling voltage and equalizaing charge balanced
The size of electric current；And
Between voltage according to monomer ceiling voltage or according to the single battery in monomer ceiling voltage and equalizaing charge
Voltage difference stop equalizaing charge to single battery.
During carrying out equalizaing charge to single battery, due between monomer ceiling voltage and the voltage of single battery
Voltage difference it is different, the size of current of required equalizaing charge is different, carries out thus, it is possible to realize to different batteries monomer
Personalized equalizaing charge realizes the equilibrium of accumulator cell charging and discharging to improve equalizaing charge efficiency.During equalizaing charge, lead to
The size of adjustment euqalizing current is crossed come the voltage difference reduced between the voltage of single battery and monomer ceiling voltage, makes electric power storage
The voltage of pond monomer tends to be consistent in monomer ceiling voltage always in accumulator charging/discharging process, can pass through the second electricity of setting
Pressure difference setting value, when the voltage difference between the voltage of the single battery in monomer ceiling voltage and equalizaing charge is greater than the
When two voltage difference setting values, increase euqalizing current；When voltage difference is the negative value (electricity of the single battery i.e. in equalizaing charge
Pressure is greater than monomer ceiling voltage) when, reduce euqalizing current；When voltage difference is not more than second voltage difference setting value, stop
Adjust the size of euqalizing current.In battery group discharge process, a ceiling voltage setting value can also be set, when monomer highest electricity
When pressure is no more than the ceiling voltage setting value, stop the equalizaing charge to all single batteries；In charging process of storage battery set,
Tertiary voltage difference setting value or euqalizing current setting value can be set, the battery in monomer ceiling voltage and equalizaing charge
Voltage difference between the voltage of monomer is equal no more than tertiary voltage difference setting value or the single battery in equalizaing charge
When the electric current that weighs is not more than euqalizing current setting value, stop the equalizaing charge to the single battery.Thus, it is possible to realize to electric power storage
The equalizaing charge of pond monomer is accurately controlled, and the efficiency of equalizaing charge is improved, and realizes the equilibrium of accumulator cell charging and discharging.
In some embodiments, include: to the single battery starting equalizaing charge for needing equalizaing charge
According to the voltage difference between monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge, starting
The power supply of equalizaing charge；With
It is generated according to the voltage difference between monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge
Euqalizing current controls signal, and controls signal according to euqalizing current and export euqalizing current to the single battery for needing equalizaing charge；
Or include:
It is generated according to the voltage difference between monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge
Euqalizing current controls signal, and controls signal according to euqalizing current and export euqalizing current to the single battery for needing equalizaing charge.
In the method for the present invention, the power supply of equalizaing charge only has one, preferably accumulator body, that is, when needing equilibrium to fill
When electric, single battery takes electricity to carry out equalizaing charge from battery bus.
In battery group charge and discharge process, when voltage and monomer the highest electricity for monitoring a (a >=1) a single battery
When voltage difference between pressure is not less than first voltage difference setting value, start the power supply of equalizaing charge, makes inactive equal
Weighing apparatus, which charges but determines, needs a single battery of equalizaing charge that electricity can be taken to carry out equalizaing charge from the power supply of equalizaing charge, so
Afterwards, respectively according to monomer ceiling voltage and inactive equalizaing charge but need equalizaing charge single battery voltage between electricity
The size of pressure difference generates euqalizing current and controls signal, and controls signal according to euqalizing current and export corresponding euqalizing current, point
It Qi Dong not be to the equalizaing charge for a single battery for needing equalizaing charge.To inactive equalizaing charge remaining in battery group
Single battery continues to monitor its voltage value, reacquires one according to the voltage of the single battery of inactive equalizaing charge
Monomer ceiling voltage, when there is b (b >=1) a single battery in the single battery for monitoring remaining inactive equalizaing charge
Voltage and the monomer ceiling voltage that redefines between voltage difference not less than first voltage difference setting value when, root respectively
According to the monomer ceiling voltage and inactive equalizaing charge but need equalizaing charge single battery voltage between voltage difference
It is worth and generates euqalizing current control signal, and controls signal output euqalizing current according to euqalizing current to need equalizaing charge to the b is a
The equalizaing charge to the b single battery is respectively started in single battery；Meanwhile also monitoring a just in equalizaing charge
The voltage of single battery, if the voltage difference between the voltage of the monomer ceiling voltage and a single battery that redefine
When value is not less than second voltage difference setting value, the euqalizing current of the single battery in this equalizaing charge is readjusted
Size, to realize the real-time adjustment to the euqalizing current of the single battery in equalizaing charge.
In some embodiments, the method for the present invention further include:
It is supplied according to the single battery quantity in equalizaing charge or according to the power supply that monomer ceiling voltage closes equalizaing charge
It gives.
In charging process of storage battery set, when euqalizing current setting value of the euqalizing current no more than setting, stop to this
The equalizaing charge of single battery, when the equalizaing charge of all single batteries stops, i.e. battery in equalizaing charge
When amount of monomer is zero, the power supply of equalizaing charge is closed；In battery group discharge process, when monomer ceiling voltage is little
When the ceiling voltage setting value of setting, the power supply of equalizaing charge is closed, at this point, the equalizaing charge of all single batteries
Stop.
The method of the present invention is by charge and discharge process, the voltage of each single battery, root in real-time monitoring battery group
Monomer ceiling voltage, the monomer ceiling voltage and the battery list obtained according to the voltage of the single battery of inactive equalizaing charge
Voltage difference between the voltage of body carries out personalized equalizaing charge (i.e. according to voltage to the lower single battery of voltage value
Difference is different, and the euqalizing current provided is also different) so that the voltage of each single battery reaches unanimity, so as to make
Some single batteries can reach end of charge voltage in charging simultaneously, can reach discharge off electricity simultaneously in electric discharge
Pressure realizes the equilibrium to lead-acid accumulator charge and discharge.
In the method for the present invention, euqalizing current size can be 0~20A, and portfolio effect is good, avoids due to single battery
Inconsistent to cause in long-time use process, the voltage difference of each single battery is gradually increased and influences battery and use the longevity
Life, effectively increases the service life of battery.Simultaneously as the method for the present invention does not need single battery first high from voltage
Take electricity by power storage in energy-storage capacitor, then the single battery that the electric energy transfer in energy-storage capacitor is low to voltage
In, but when needing to carry out equalizaing charge directly from the power supply of equalizaing charge take electricity to the lower single battery of voltage value into
Row equalizaing charge, equalizaing charge process only need to carry out a decompression transformation, and therefore, efficiency significantly improves, in conjunction with synchronous rectification
The efficiency of technology, the method for the present invention can achieve 93% or more.
According to another aspect of the present invention, a kind of lead is also provided based on above-mentioned lead-acid accumulator equilibrium and monitoring method
Acid accumulator equilibrium and monitoring system may include: that engine control system and the slave being arranged in parallel with single battery monitor
Module；Wherein,
Slave monitoring modular is arranged in a one-to-one correspondence with single battery, for obtaining single battery in parallel therewith in real time
Voltage and euqalizing current and export to engine control system, and the slave machine control signal pair exported according to engine control system
Single battery in parallel carries out equalizaing charge control therewith；
The voltage determination for the single battery that engine control system is used to be exported according to slave monitoring modular needs equalizaing charge
Single battery and generating export from machine control signal to slave monitoring modular, and according to the voltage of single battery, equilibrium
The power supply of single battery quantity control equalizaing charge in charging.
Present system, can using the modular parallel formula framework of each single battery slave monitoring modular in parallel
To reduce the interference of intermodule and the interference to battery battery system, in the mistake for carrying out charge and discharge balancing control to battery
Cheng Zhong, due to using the mode being connected in parallel,, will not be to storage even if some slave monitoring modular goes wrong
The work of the battery system of battery, other slave monitoring modulars and engine control system has an impact.
In some embodiments, slave monitoring modular includes: voltage collection circuit, euqalizing current Acquisition Circuit, equilibrium
Charging control circuit, slave control unit and slave communication unit；Wherein,
Slave communication unit is for realizing the communication between slave control unit and engine control system；
The voltage signal that voltage collection circuit is used to acquire single battery is exported to slave control unit；
The euqalizing current signal that euqalizing current Acquisition Circuit is used to acquire single battery is exported to slave control unit；
Slave control unit is used to export voltage signal and euqalizing current signal to engine control system, and according to master
The slave machine control signal of machine control system output generates euqalizing current control signal and exports to equalizing charge controlling circuit；
Equalizing charge controlling circuit, which is used to control signal adjustment according to euqalizing current, carries out equalizaing charge to single battery
When euqalizing current.
Slave control unit in slave monitoring modular can be by slave communication unit by voltage collection circuit and equilibrium
The voltage signal and euqalizing current signal for the single battery in parallel with slave monitoring modular that current collection circuit obtains in real time
It exports to engine control system, and defeated according to the slave machine control signal generation euqalizing current control signal of engine control system output
Out to equalizing charge controlling circuit, be adjusted by size of the equalizing charge controlling circuit to euqalizing current, thus realize to
The equalizaing charge of the single battery of slave monitoring modular parallel connection controls.
In some embodiments, slave monitoring modular can also include temperature collection circuit, for acquiring battery list
Connection strap temperature data on body positive and negative electrode pole is exported to slave control unit；Slave control unit is also used to battery
Connection strap temperature data on monomer positive and negative electrode pole is exported to engine control system.Engine control system passes through to battery
Connection strap temperature data on monomer positive and negative electrode pole carries out analysis or obtains the average value of connection strap temperature by calculating, and leads to
Crossing (can be by the temperature data of the connection strap on single battery positive and negative electrode pole and room temperature and preset and be stored in master
In machine control system), the average value of connection strap temperature be compared, can analyze and judge whether connection strap connects well.Electric power storage
When pond group carries out floating charge, connection strap temperature differs ± 3 DEG C with room temperature；When battery group is discharged, connection strap temperature is no more than average
At 10 DEG C of value, it can determine whether that the connection strap connection of the pole is good, when connection strap temperature exceeds above range, engine control system
It can warn to the single battery there may be connection strap bad connection, maintain easily personnel and safeguard and locate in time
Reason, avoids damaging the single battery, influences stability and the service life of battery.
In some embodiments, engine control system may include: the power supply of the first communication unit, equalizaing charge
Control circuit and master machine control unit, wherein
First communication unit is for realizing the communication between slave monitoring modular and master machine control unit；
The voltage signal that master machine control unit is used to be exported according to slave monitoring modular obtains monomer ceiling voltage, monomer most
Voltage difference between high voltage and the voltage of other single batteries, and need are determined according to monomer ceiling voltage and voltage difference
The single battery of equalizaing charge and generation are exported from machine control signal to slave monitoring modular；And according to voltage difference,
The power supply control signal that single battery quantity or monomer ceiling voltage in weighing apparatus charging generate equalizaing charge is exported to equal
Weigh the power supply control circuit to charge；
The power supply control circuit of equalizaing charge includes switching switch, for being controlled according to the power supply of equalizaing charge
The opening and closing of signal control switching switch, starting or the power supply for closing equalizaing charge.
Master machine control unit is compared by the voltage of all single batteries to acquisition, is filled from inactive equilibrium
Monomer ceiling voltage is obtained in the voltage of the single battery of electricity, and obtains the electricity of monomer ceiling voltage He other single batteries
Voltage difference between pressure, determined according to voltage difference need the single battery of equalizaing charge and according to monomer ceiling voltage and
Voltage difference generation is exported from machine control signal to slave monitoring modular；And according to the battery in voltage difference, equalizaing charge
The power supply control signal that amount of monomer or monomer ceiling voltage generate equalizaing charge is exported to the power supply of equalizaing charge
Control circuit controls signal control switching by the power supply of equalizaing charge by the power supply control circuit of equalizaing charge and opens
The opening and closing of pass, to realize the starting and closing of the power supply of equalizaing charge.
In some embodiments, engine control system can also include: that battery total voltage Acquisition Circuit, battery are total
Current collection circuit, supply current Acquisition Circuit, insulation detecting circuit and second communication module, wherein master machine control unit is also
For receiving the battery total voltage signal of battery total voltage Acquisition Circuit acquisition, battery total current Acquisition Circuit acquires
Battery total current signal, the acquisition of supply current Acquisition Circuit battery is balanced to entire lead-acid accumulator and monitoring system into
The supply current signal and insulation detecting circuit of row power supply carry out the detection data of Insulation monitoring acquisition to battery and via the
Two communication modules are exported or are exported again via second communication module after being analyzed and processed to above-mentioned data.
On the one hand, engine control system can receive and analyze battery total voltage, total current, supply current etc.
Processing, such as by the charge and discharge SOC (state-of-charge) of corresponding calculation method (such as: Ah counting method) calculating accumulator group,
Pass through monitoring, analysis and the place of the data such as charge and discharge SOC, battery total voltage, total current, supply current to battery group
Reason, can know and monitor the behavior pattern of battery pack and the efficiency of charge and discharge.In addition, engine control system can also calculate
The charge and discharge SOC of single battery, and combine battery total current, supply current, the voltage of single battery, euqalizing current,
The performance feelings of the single battery can be known and be monitored to the data such as the connection strap temperature on single battery positive and negative anodes pole
The efficiency of condition and charge and discharge.It is monitored, can be found in time by the performance to battery whole group battery and single battery
Connection strap on single battery pole whether bad connection, failure battery core position the problems such as, to risk carry out early warning and to therefore
Barrier is warned, so that maintenance personnel overhauls in time.
Host computer control module is carried out by the detection data for carrying out Insulation monitoring acquisition to battery to insulation detecting circuit
Analysis and processing, can know insulation resistance, so that the insulation situation of battery circuit system is monitored, in time to defective insulation etc.
Situation carries out Risk-warning and failure is warned.
On the other hand, host computer control module can also be by second communication module by the battery total voltage received, total
The data such as electric current, supply current externally export, and such as output to the rotating ring outside system monitors system, by rotating ring monitoring system realization pair
Analysis, processing and the operation of above-mentioned data obtain performance information, warning information and the failure letter of battery group and single battery
Breath, for instructing maintenance personnel to the daily maintenance of battery.
Detailed description of the invention
Fig. 1 is the flow chart of the lead-acid accumulator equilibrium and monitoring method of an embodiment of the present invention；
Fig. 2 is that the lead-acid accumulator of the embodiment based on lead-acid accumulator equilibrium shown in FIG. 1 and monitoring method is equal
The frame construction drawing of weighing apparatus and monitoring system；
Fig. 3 is the work flow diagram of lead-acid accumulator equilibrium and monitoring system shown in Fig. 2；
Fig. 4 is the frame of the slave monitoring modular of an embodiment of lead-acid accumulator equilibrium shown in Fig. 2 and monitoring system
Structure chart；
Fig. 5 is the frame of the engine control system of an embodiment of lead-acid accumulator equilibrium shown in Fig. 2 and monitoring system
Structure chart.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
Fig. 1 schematically shows the lead-acid accumulator equilibrium and monitoring method of a kind of embodiment according to the present invention
Flow chart.As shown, including the following steps:
S101: carrying out real-time monitoring to the voltage of the single battery of the inactive equalizaing charge in battery group, according to
The voltage of the single battery of inactive equalizaing charge determines the single battery for needing equalizaing charge.It specifically may be implemented are as follows: right
The voltage of the single battery of inactive equalizaing charge in battery group carries out real-time monitoring, according to inactive equalizaing charge
The voltage of single battery obtains monomer ceiling voltage, then according to the battery of monomer ceiling voltage and inactive equalizaing charge
Voltage difference between the voltage of monomer determines the single battery for needing equalizaing charge.
S102: equalizaing charge is started to the single battery for needing equalizaing charge.It can specifically include following realization step: root
According to the voltage difference between monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge, start equalizaing charge
Power supply；And according to the voltage difference between monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge
Euqalizing current control signal (can be level signal, digital signal or pulse signal etc.) be generated, and is controlled according to euqalizing current
Signal exports euqalizing current to the single battery for needing equalizaing charge.Alternatively, may include following realization step: most according to monomer
Voltage difference between high voltage and the voltage of the single battery of inactive equalizaing charge generates euqalizing current and controls signal, and
Signal, which is controlled, according to euqalizing current exports euqalizing current to the single battery for needing equalizaing charge
S103: real-time monitoring is carried out to the single battery in equalizaing charge, according to the single battery in equalizaing charge
Voltage and euqalizing current, to single battery carry out equalizaing charge control.It can specifically include following realization step: to equilibrium
Single battery in charging carries out real-time monitoring, according to the voltage of the single battery in equalizaing charge and the monomer highest
The size of the voltage difference adjustment euqalizing current of voltage；And according to the single battery in monomer ceiling voltage and equalizaing charge
Voltage between voltage difference or equalizaing charge to single battery is stopped according to euqalizing current.
S104: the electricity of equalizaing charge is closed according to the single battery quantity in equalizaing charge or according to monomer ceiling voltage
Source supply.
The specific implementation example of lead-acid accumulator equilibrium shown in FIG. 1 and monitoring method, below in connection with attached shown in Fig. 2
Based on lead-acid accumulator equilibrium shown in FIG. 1 with a kind of lead-acid accumulator of embodiment of monitoring method balanced and monitoring system
It is described in detail.
Fig. 2 schematically shows a kind of embodiment based on lead-acid accumulator equilibrium shown in FIG. 1 and monitoring method
Lead-acid accumulator equilibrium and monitoring system frame construction drawing.As shown, the system includes: 100 He of engine control system
The slave monitoring modular 200 being arranged in parallel with single battery；Wherein,
Slave monitoring modular 200 is arranged in a one-to-one correspondence with single battery, for obtaining battery in parallel therewith in real time
The voltage and euqalizing current of monomer are simultaneously exported to engine control system 100, and the slave exported according to engine control system 100
It controls signal and equalizaing charge control is carried out to single battery in parallel therewith；
The voltage for the single battery that engine control system 100 is used to be exported according to slave monitoring modular 200, which determines, to be needed
The single battery to charge that weighs is exported from machine control signal to slave monitoring modular 200 with generation, and according to single battery
The power supply of single battery quantity control equalizaing charge in voltage, equalizaing charge.
Fig. 3 schematically illustrates the specific workflow of the present embodiment system, in this implementation, from machine control signal packet
First is included from machine control signal, second from machine control signal and third from machine control signal, is included the following steps:
S201: carrying out real-time monitoring to the voltage of the single battery of the inactive equalizaing charge in battery group, according to
The voltage of the single battery of inactive equalizaing charge determines the single battery for needing equalizaing charge.Specific implementation include: (1) from
Machine monitoring modular 200 obtains the voltage of single battery in parallel therewith in real time and exports to engine control system 100；(2) main
Machine control system 100 is compared and is calculated by the voltage of each single battery exported to slave monitoring modular 200, is obtained
The monomer ceiling voltage in the voltage of the single battery of inactive equalizaing charge is obtained (for convenience of understanding, monomer highest at this time
Voltage is known as monomer ceiling voltage I) and monomer ceiling voltage I and the voltage of the single battery of inactive equalizaing charge between
Voltage difference the judgement of engine control system 100 and determine according to above-mentioned voltage difference and need the single battery of equalizaing charge
(specific judgement and determination process can be with are as follows: preset a first voltage difference setting value and be stored in engine control system
In 100, when the voltage difference of monomer ceiling voltage and the voltage of the single battery of a certain inactive equalizaing charge is not less than the
When one voltage difference setting value, the judgement of engine control system 100 and the determining single battery are the battery for needing equalizaing charge
Monomer, first voltage difference setting value is preferably 100mV).
S202: equalizaing charge is started to the single battery for needing equalizaing charge.Specific implementation includes: (1) host control system
System 100 according to step S201 obtain voltage difference (when have one or more voltage difference be greater than first voltage difference setting value
When, that is, when exist need equalizaing charge single battery when) generate and export the first equalizaing charge power supply control signal
The power supply of (can be level signal or frequency signal) starting equalizaing charge；(2) engine control system 100 is according to corresponding
Voltage difference generates first and is exported from machine control signal to the single battery for needing equalizaing charge corresponding with the voltage difference simultaneously
Join setting slave monitoring modular 200, slave monitoring modular 200 according to first received from machine control signal (can for electricity
Ordinary mail number or digital signal) the first euqalizing current control signal is generated, and signal output equilibrium is controlled according to the first euqalizing current
Electric current starts the equalizaing charge to the single battery for needing equalizaing charge to the single battery for needing equalizaing charge.
S203: real-time monitoring is carried out to the single battery in equalizaing charge, according to monomer ceiling voltage and equalizaing charge
In single battery voltage between voltage difference adjustment euqalizing current size.Specific implementation includes: in equalizaing charge
The corresponding 200 real-time monitoring single battery of slave monitoring modular of single battery voltage and euqalizing current export to host
Control system 100, engine control system 100 carry out the voltage of the single battery in monomer ceiling voltage I and equalizaing charge
Compare, obtain voltage difference, and generates and export second from machine control signal to slave monitoring modular according to the voltage difference
200, slave monitoring modular 200 generates the second euqalizing current from machine control signal according to second received and controls signal, and root
(it specifically can be according to the size of the second euqalizing current control signal adjustment euqalizing current and preset a second voltage difference and set
Definite value is simultaneously stored in engine control system 100, when voltage difference is greater than second voltage difference setting value, engine control system
100 generate and export increase euqalizing current second from machine control signal, so that voltage difference be made to be gradually reduced；Work as voltage difference
For negative value, i.e., when the voltage of single battery is greater than monomer ceiling voltage, engine control system 100 is generated and output reduces equilibrium
The second of electric current is from machine control signal, so that making the voltage of single battery reduces；When voltage difference is poor not less than second voltage
When being worth setting value, engine control system 100 is generated and output stops the second of adjustment euqalizing current from machine control signal.Second electricity
Pressure difference setting value is preferably 20mV).
S204: carrying out real-time monitoring to the voltage of the single battery of the inactive equalizaing charge of residue in battery group,
The single battery for needing equalizaing charge is determined according to the voltage of the single battery of inactive equalizaing charge.Specific implementation can refer to
S201, wherein the monomer ceiling voltage that this step obtains is known as monomer ceiling voltage II.
S205: equalizaing charge is started to the single battery for needing equalizaing charge that step S204 is determined.Specific implementation includes:
Engine control system 100 is generated according to the voltage difference between monomer voltage II and the voltage for the single battery for needing equalizaing charge
First exports the slave being arranged in parallel to the single battery for needing equalizaing charge corresponding with the voltage difference from machine control signal
Monitoring modular 200, slave monitoring modular 200 generate the first euqalizing current control letter from machine control signal according to first received
Number, and signal is controlled according to the first euqalizing current and exports euqalizing current to the single battery for needing equalizaing charge, starting is equal to needing
The equalizaing charge of the single battery of weighing apparatus charging.
S206: real-time monitoring is carried out to the single battery in equalizaing charge, according to monomer ceiling voltage and equalizaing charge
In single battery voltage between voltage difference adjustment euqalizing current size.Specific implementation can refer to step 203,
In, in this step, the monomer ceiling voltage refers to the monomer ceiling voltage II that step S204 is obtained, the storage in the equalizaing charge
Battery cell includes that the single battery being in equalizaing charge state before step S204 and step S205 have been turned on
Weigh the single battery for needing equalizaing charge to charge.
S207: step S204 is repeated to step S206.
S208: according to difference or root between the voltage of the voltage of the single battery in monomer ceiling voltage and equalizaing charge
Stop the equalizaing charge to single battery according to euqalizing current.Specific implementation includes: (1) engine control system 100 by list
(ceiling voltage setting value can preset and be stored in engine control system 100 for body ceiling voltage and ceiling voltage setting value
In, it needs to close the power supply to equalizaing charge for judging whether, ceiling voltage setting value is preferably putting for battery group
Electric final voltage) it is compared, when the voltage value of monomer ceiling voltage is not more than ceiling voltage setting value, engine control system
The power supply of the power supply control signal-off equalizaing charge of 100 the second equalizaing charges of output, to stop to all storages
The equalizaing charge of battery cell；(2) engine control system 100 passes through to the battery list in monomer ceiling voltage and equalizaing charge
(tertiary voltage difference setting value can preset and deposit for voltage difference and tertiary voltage difference setting value between the voltage of body
Storage needs to stop equalizaing charge right in engine control system 100 for judging) it is compared, when voltage difference is not more than
When tertiary voltage difference setting value, engine control system 100 export third from machine control signal to slave monitoring modular 200, from
Machine monitoring modular 200 generates third euqalizing current from machine control signal according to the third received and controls signal, and according to third
Euqalizing current controls equalizaing charge of the signal stopping to the corresponding single battery of slave monitoring modular 200, and (euqalizing current drops
Most zero)；Alternatively, engine control system 100 is by the way that euqalizing current and euqalizing current setting value, (euqalizing current setting value can be with
It presets and is stored in engine control system 100, need to stop equalizaing charge, euqalizing current setting value right for judging
Preferably 2A) it is compared, it is main when the euqalizing current of the single battery in equalizaing charge is not more than euqalizing current setting value
Machine control system 100 exports third from machine control signal to slave monitoring modular 200, and slave monitoring modular 200 is according to receiving
Third from machine control signal generate third euqalizing current control signal, and according to third euqalizing current control signal stop to this
The equalizaing charge of the corresponding single battery of slave monitoring modular 200.
S209: the electricity of equalizaing charge is closed according to the single battery quantity in equalizaing charge or according to monomer ceiling voltage
Source supply.Specific implementation includes: (1) when the voltage value of monomer ceiling voltage is no more than ceiling voltage setting value, host control
System 100 exports the power supply of the power supply control signal-off equalizaing charge of the second equalizaing charge；(2) work as equalizaing charge
In single battery quantity when being reduced to zero, the power supply that engine control system 100 exports the second equalizaing charge controls letter
Number close equalizaing charge power supply.
In above-mentioned workflow, step S203 to step S208 can be carried out simultaneously or sequence is any is exchanged.
In another embodiment, in step S203, second can be implemented as voltage difference from machine control signal, therefore walk
Rapid S203 is also implemented as: engine control system 100 obtains and output voltage difference is to slave monitoring modular 200, and slave is supervised
It surveys module 200 and second euqalizing current control signal is generated according to the voltage difference received, and controlled and believed according to the second euqalizing current
Number adjustment euqalizing current size, specifically, second voltage difference is preset in slave monitoring modular 200, when voltage difference is big
When second voltage difference setting value, slave monitoring modular 200 generates the second euqalizing current control signal control euqalizing current and increases
Greatly, to reduce voltage difference；When voltage difference is negative value, slave monitoring modular 200 generates the second euqalizing current control letter
Number control euqalizing current reduce；When voltage difference is not less than second voltage difference setting value, slave monitoring modular 200 generates the
Two euqalizing currents control signal control and stop adjustment euqalizing current.
In another embodiment, in step S208, third can be implemented as voltage difference from machine control signal, therefore walk
Rapid S208 is also implemented as: (1) referring to above；(2) third difference setting value, host are preset in slave monitoring modular 200
100 output voltage difference of control system to slave monitoring modular 200, slave monitoring modular 200 by the voltage difference received and
Third difference setting value is compared, and when voltage difference is not more than tertiary voltage difference setting value, slave monitoring modular 200 is raw
It is (balanced to stop the equalizaing charge to the corresponding single battery of slave monitoring modular 200 at third euqalizing current control signal
Zero) electric current is reduced to；Alternatively, slave monitoring modular 200 is preset with euqalizing current setting value, slave monitoring modular 200 will be balanced
Electric current is compared with euqalizing current setting value, when euqalizing current is not more than euqalizing current setting value, slave monitoring modular 200
It is (equal to generate the equalizaing charge that third euqalizing current control signal stops to the corresponding single battery of slave monitoring modular 200
Zero) weighing apparatus electric current is reduced to.
The specific implementation of the workflow of above-mentioned lead-acid accumulator equilibrium and monitoring system is actually shown in Fig. 1
Lead-acid accumulator equilibrium and monitoring method specific implementation.
The present embodiment system can make lead-acid batteries in charge and discharge process, each electric power storage after equalised charge control
The voltage of pond monomer tends to be consistent with the ceiling voltage in single battery always, so as to so that each single battery can be with
It reaches end of charge voltage simultaneously in charging, or reaches final discharging voltage simultaneously in electric discharge, realize filling for battery group
Equalization discharge.Meanwhile in the present embodiment system, the power supply for carrying out equalizaing charge to single battery only has one, to battery
The equalizaing charge process of monomer only needs to carry out a decompression transformation, and according to the voltage of single battery during equalizaing charge
Personalized equalizaing charge is carried out, the voltage of single battery is different from the voltage difference of monomer ceiling voltage, the equilibrium electricity provided
Stream is different, so as to significantly improve the efficiency of equalizaing charge.In addition, the present embodiment system is to the battery list for needing equalizaing charge
When body carries out equalizaing charge, the size of euqalizing current can be 0~20A, and portfolio effect is good, can to avoid due to euqalizing current not
The single battery that foot causes partial properties to differ greatly cannot achieve charge and discharge balancing, e.g., the battery group of former 300Ah, into
Row 30A electric discharge, when certain section single battery capacity it is relatively low to 100Ah when, if euqalizing current can reach 20A, the battery
Monomer can carry out 30A electric discharge as the single battery of other 300Ah, and reach final discharging voltage simultaneously, without
There is the single battery over-discharge or the case where other high capacity cells put endless electricity, realize the equilibrium of battery group electric discharge,
And if euqalizing current is only capable of reaching 10A, when the single battery carries out 30A as the single battery of other 300Ah
Electric discharge, even if having carried out Balance route to battery, remains on and will lead to the single battery over-discharge or other high capacity cells
It can not release energy completely.
Preferably, as shown in figure 4, the slave monitoring modular 200 of the present embodiment system may include: voltage collection circuit
21, euqalizing current Acquisition Circuit 22, equalizing charge controlling circuit 23, slave control unit 24 and slave communication unit 25.
Wherein, slave control unit 24 can be implemented as included three tunnels and the above A/D converter (ADC) and have
The single-chip microcontroller of PWM (Pulse Width Modulation, pulse width modulation) control function.The power supply of equalizaing charge is not
Before starting, slave control unit 24 takes electricity to maintain its normal work from single battery；Start the voltage supply of equalizaing charge
Afterwards, slave control unit 24 takes electricity to maintain its normal work from battery bus (i.e. battery group).
Slave communication unit 25 is for realizing the communication between slave control unit 24 and engine control system 100；It is preferred that
, slave communication unit 25 can be implemented as CAN communication interface.
Voltage collection circuit 21 is used to acquire the voltage signal of single battery and exports the voltage signal to slave control
The ADC input port of unit 24 processed, slave control unit 24 read the voltage of the ADC input port and via slave communication units
25 export to engine control system 100.Voltage collection circuit 21 can refer to prior art realization.
Euqalizing current Acquisition Circuit 22 is exported by acquiring the voltage signal of sampling resistor to the ADC of slave control unit 24
Input port, slave control unit 24 read the voltage of the ADC input port and by by the voltage value of reading divided by setting in advance
The resistance value of sampling resistor determined and be stored in slave control unit 24, when can obtain single battery and carrying out equalizaing charge
Euqalizing current and via the output of slave communication unit 25 to engine control system 100.Euqalizing current Acquisition Circuit 22 can refer to
The prior art is realized.
Slave control unit 24 generates euqalizing current control letter according to the slave machine control signal that engine control system 100 exports
Number output is to equalizing charge controlling circuit 23.
Equalizing charge controlling circuit 23 is used to control signal adjustment according to euqalizing current and fills to single battery progress equilibrium
Euqalizing current when electric.Specific implementation is referred to the prior art, including DC/DC reduction voltage circuit and pwm control circuit, wherein
When starting the power supply of equalizaing charge, DC/DC reduction voltage circuit obtains the higher direct current of voltage value from the power supply of equalizaing charge
Then voltage is reduced to the lower steady dc voltage output of voltage value, for carrying out equalizaing charge in parallel to single battery.
The output voltage of DC/DC reduction voltage circuit can be adjusted by pwm control circuit, that is, carried out equilibrium to single battery and filled
In electric process, euqalizing current can by the pwm control circuit that is connected between slave control unit 24 and DC/DC reduction voltage circuit into
Row adjustment.In DC/DC reduction voltage circuit, using synchronous rectification, i.e., taken using the extremely low special power MOSFET of on state resistance
For rectifier diode, charge efficiency can be significantly improved.
When receiving the first of the output of engine control system 100 from machine control signal, slave control unit 24 generates the
One euqalizing current control signal export to pwm control circuit, the first euqalizing current control signal specifically can be achieved for frequency it is certain
And the pulse width signal that duty ratio is 1%, pwm control circuit control the output voltage of DC/DC reduction voltage circuit by duty ratio, use
In carrying out equalizaing charge in parallel to single battery, to realize that the equilibrium of single battery is filled in output euqalizing current starting
Electricity.Then, the battery list that slave control unit 24 acquires in real time via 25 output voltage Acquisition Circuit 21 of slave communication unit
The euqalizing current that the voltage and euqalizing current Acquisition Circuit 22 of body acquire in real time is to master machine control unit 11, master machine control unit 11
According to the voltage difference of monomer ceiling voltage and the voltage of single battery, output second controls single from machine control signal to slave
Member 24, slave control unit 24 generate the second euqalizing current control signal and export to pwm control circuit, the control of the second euqalizing current
Signal specifically can be achieved for frequency is certain and pulse width signal that duty ratio changes, battery list is realized by the adjustment of duty ratio
The adjustment of body euqalizing current, and the adjustment of the voltage of single battery is realized by the adjustment of euqalizing current in turn, make electric power storage
The voltage of pond monomer tends to be consistent with monomer ceiling voltage, the final equilibrium for realizing the charge and discharge of battery group.Engine control system
100 pass through the euqalizing current and euqalizing current setting value for comparing the single battery in equalizaing charge, when the storage in equalizaing charge
When the euqalizing current of battery cell is not more than euqalizing current setting value, engine control system 100 exports third from machine control signal
To slave control unit 24, slave control unit 24 is defeated from machine control signal generation third euqalizing current control signal according to third
Out to pwm control circuit, euqalizing current is made to become 0, to stop the equalizaing charge to single battery.
In the present embodiment, it is also preferable to include temperature collection circuits for slave monitoring modular 200.
Temperature collection circuit acquires the temperature signal of the connection strap on the positive and negative pole of single battery using temperature sensor
Export to slave control unit 24 ADC input port, slave control unit 24 read the ADC input port temperature via from
Machine communication unit 25 is exported to engine control system 100.Temperature collection circuit specifically can refer to prior art realization.
Preferably, as shown in figure 5, the engine control system 100 of the present embodiment system may include: the first communication unit
12, the power supply control circuit 13 and master machine control unit 11 of equalizaing charge, wherein
First communication unit 12 is for realizing the communication between slave monitoring modular 200 and master machine control unit 11；It is preferred that
, the first communication unit 12 can be implemented as CAN communication interface.
Master machine control unit 11 specifically can be achieved as the single-chip microcontroller with the port ADC, single for being obtained according to voltage signal
Voltage difference between body ceiling voltage, monomer ceiling voltage and the voltage of other single batteries, and according to monomer highest electricity
Pressure and voltage difference, which determine the single battery for needing equalizaing charge and generate to export from machine control signal to the slave, monitors mould
Block 200；And according in voltage difference, equalizaing charge single battery quantity or monomer ceiling voltage generate equalizaing charge
Power supply control signal is exported to the power supply control circuit 13 of equalizaing charge.
The power supply control circuit 13 of equalizaing charge includes switching switch, for the power supply control according to equalizaing charge
The opening and closing of signal control switching switch processed, starting or the power supply for closing equalizaing charge.The power supply of equalizaing charge supplies
It can be implemented as control relay circuit to control circuit 13, switching switch is embodied as relay, and control relay circuit is specific
It can refer to prior art realization.
Preferably, it is additionally provided with configuration module (not shown) and memory module (not shown) in engine control system 100, configures
Module can be used for configuring first voltage difference setting value, second voltage difference setting value, euqalizing current setting value and ceiling voltage
Setting value is stored to memory module；Alternatively, being additionally provided with memory module (not shown) in engine control system 100, memory module is matched
It is set to and prestores first voltage difference setting value, second voltage difference setting value, euqalizing current setting value and ceiling voltage setting
Value.
Master machine control unit 11 is compared by the voltage of each single battery exported to slave monitoring modular 200
And calculating, obtain monomer ceiling voltage in the voltage of the single battery of inactive equalizaing charge and monomer ceiling voltage and
Voltage difference between the voltage of the single battery of inactive equalizaing charge, and first voltage difference is obtained from memory module
Calculated voltage difference is compared with the first voltage difference setting value, when voltage difference is not less than by setting value respectively
When first voltage difference setting value, it is equal to need that master machine control unit 11 judges and determine the corresponding single battery of the voltage difference
Weigh the single battery to charge.When there is the single battery for needing equalizaing charge, master machine control unit 11 generates and exports the
The power supply of one equalizaing charge controls signal to control relay circuit, controls relay and opens, starts the electricity of equalizaing charge
Source supply, at this point, the DC/DC reduction voltage circuit of slave monitoring modular 200 can from the bus of battery group obtain voltage value compared with
High DC voltage is changed into the lower DC voltage of voltage value for carrying out equalizaing charge to single battery.Meanwhile host
Control unit 11 generates first according to corresponding voltage difference and is exported from machine control signal to need corresponding with the voltage difference
The slave monitoring modular 200 that is arranged in parallel of single battery of weighing apparatus charging, the starting of slave monitoring modular 200 is to needing equalizaing charge
The equalizaing charge of single battery.
After starting equalizaing charge, master machine control unit 11 passes through to the battery list in monomer ceiling voltage and equalizaing charge
The voltage of body is compared and calculates, and obtains voltage difference, and second voltage difference setting value is obtained from memory module, will count
The voltage difference of calculating is compared with the second voltage difference setting value respectively, is set when voltage difference is greater than second voltage difference
When definite value, master machine control unit 11 generates and exports increase euqalizing current second from machine control signal, i.e. output increases pulsewidth
The second of signal dutyfactor is from machine control signal to slave monitoring modular 200；When voltage difference is set not less than second voltage difference
When definite value, master machine control unit 11 is generated and output stops the second of adjustment euqalizing current from machine control signal, i.e. output pulse width
Signal dutyfactor no longer change second from machine control signal to slave monitoring modular 200；When voltage difference is negative value, host
Control unit 11 generates and exports reduce euqalizing current second from machine control signal, i.e. output reduces pulse width signal duty ratio
Second from machine control signal to slave monitoring modular 200；Slave monitoring modular 200 is according to second received from machine control signal
Realize the adjustment to the euqalizing current of the single battery in equalizaing charge.
In battery group discharge process, master machine control unit 11 obtains ceiling voltage setting value from memory module, by right
Monomer ceiling voltage and ceiling voltage setting value are compared, when the voltage value of monomer ceiling voltage is set no more than ceiling voltage
When value, the power supply that master machine control unit 11 exports the second equalizaing charge controls signal to control relay circuit, controls
Cut-off, stops the power supply of equalizaing charge, to stop the equalizaing charge of all single batteries.
In charging process of storage battery set, master machine control unit 11 obtains euqalizing current setting value from memory module, by right
The euqalizing current and euqalizing current setting value of single battery in equalizaing charge are compared, when the battery in equalizaing charge
When the euqalizing current of monomer is not more than euqalizing current setting value, master machine control unit 11 exports third from machine control signal to slave
Monitoring modular 200, slave monitoring modular 200 stop the equalizaing charge to the corresponding single battery of slave monitoring modular 200；
When the single battery quantity in equalizaing charge is reduced to zero, the power supply that master machine control unit 11 exports the second equalizaing charge is supplied
To control signal to control relay circuit, cut-off is controlled.
In this implementation, engine control system 100 it is also preferable to include: battery total voltage Acquisition Circuit 14, battery are always electric
Flow Acquisition Circuit 15, supply current Acquisition Circuit 16, insulation detecting circuit 17 and second communication module 18.
Wherein, battery total voltage Acquisition Circuit 14 is used to acquire voltage signal (the i.e. battery total voltage of battery group
Signal) to master machine control unit 11, physical circuit can refer to prior art realization for output.
Battery total current Acquisition Circuit 15 is used to acquire the current signal (i.e. battery total current signal) of battery group
Output is preferably acquired battery total current signal by Hall sensor, specifically can refer to master machine control unit 11
The prior art is realized.
Supply current Acquisition Circuit 16 carries out entire lead-acid accumulator equilibrium and monitoring system for acquiring battery group
Power supply (including battery group to institute's electricity consumption in need in slave monitoring modular 200 and engine control system 100 can local confession
Electricity, for example, power supply when carrying out equalizaing charge to single battery, being powered to slave control unit 24 to maintain it normal
Work and master machine control unit 11 is powered with maintain its work normally etc.) supply current signal, preferably pass through Hall
Current sensor is acquired supply current signal, specifically can refer to prior art realization.
Insulation detecting circuit 17 can obtain and export corresponding detection data to master machine control unit 11, master machine control unit
11 by handling detection data and being calculated, and can obtain the size of insulation resistance, can be with according to the size of insulation resistance
The insulation situation of battery group is judged, thus to the insulating monitoring of battery group.It specifically can refer to prior art realization.
Master machine control unit 11 can also be by received battery total voltage signal, battery total current signal, power supply electricity
It is defeated via second communication module 18 to flow the detection data that signal and insulation detecting circuit 17 carry out Insulation monitoring acquisition to battery
It is exported again via second communication module 18 after being analyzed and processed out or to above-mentioned data.
The data such as real-time battery total voltage, total current, supply current, master machine control unit 11 can lead to based on the received
The charge and discharge SOC (state-of-charge) for being pre-stored in the respective algorithms calculating accumulator group of memory module is crossed, and by battery group
Charge and discharge SOC, battery total voltage, total current, the data such as supply current monitoring, analysis and processing, can know and
Monitor the behavior pattern of battery pack and the efficiency of charge and discharge.
In addition, the voltage of real-time single battery, euqalizing current, battery total current, supply current etc. based on the received
Data, master machine control unit 11 can by being pre-stored in the charge and discharge SOC of the respective algorithms calculating accumulator monomer of memory module,
And on combination battery total current, supply current, the voltage of single battery, euqalizing current, single battery positive and negative anodes pole
The data such as connection strap temperature, can know and monitor the behavior pattern of the single battery and the efficiency of charge and discharge.
It is monitored by the performance to battery whole group battery and single battery, can find single battery in time
The problems such as whether connection strap on pole loosen, failure battery core position carries out early warning to risk and warns to failure, so as to
Maintenance personnel overhauls in time.
Second communication module 18 is for exporting the received battery total voltage of master machine control unit 11, total current, power supply electricity
The data such as stream, the voltage of single battery, euqalizing current, connection strap temperature on single battery positive and negative electrode pole, realize master
Machine control unit 11 and extraneous communication.
When output to power & environment supervision system, when realizing engine control system 100 and the communication of power & environment supervision system, second is logical
Letter module 18 is preferably realised as RS485 communication interface.Wherein, power & environment supervision system can refer to prior art realization, can be to master
Battery total voltage that machine control unit 11 is exported via second communication module 18, total current, supply current, single battery
The real time datas information such as voltage, euqalizing current, connection strap temperature on single battery positive and negative electrode pole are monitored, and are led to
Cross and processing and operation carried out to these data informations, thus obtain battery whole group battery and single battery performance information and
Warning information, the daily maintenance that can be used for instructing maintenance personnel to battery.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (10)
1. lead-acid accumulator equilibrium and monitoring method, which comprises the steps of:
Real-time monitoring is carried out to the voltage of the single battery of the inactive equalizaing charge in battery group, and according to inactive equal
The voltage of the single battery of weighing apparatus charging determines the single battery for needing equalizaing charge, opens the single battery for needing equalizaing charge
Dynamic equalizaing charge；With
Real-time monitoring is carried out to the single battery in equalizaing charge, according to the voltage of the single battery in equalizaing charge and
Weigh electric current, carries out equalizaing charge control to single battery.
2. the method according to claim 1, wherein the single battery according to inactive equalizaing charge
Voltage determination needs the single battery of equalizaing charge to realize are as follows:
Monomer ceiling voltage is obtained according to the voltage of the single battery of inactive equalizaing charge；
According to the voltage difference between monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge, determining is needed
Weigh the single battery to charge.
3. according to the method described in claim 2, it is characterized in that, the voltage according to the single battery in equalizaing charge
And euqalizing current, carrying out equalizaing charge control to single battery includes:
It is adjusted according to the voltage difference between the voltage of the single battery in monomer ceiling voltage and the equalizaing charge balanced
The size of electric current；And
According to monomer ceiling voltage or according to the electricity between the voltage of the single battery in monomer ceiling voltage and equalizaing charge
Pressure difference stops the equalizaing charge to single battery.
4. according to the method described in claim 2, it is characterized in that, described pair needs the single battery of equalizaing charge to start equilibrium
Charging includes:
According to the voltage difference between the monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge, starting
The power supply of equalizaing charge；With
It is generated according to the voltage difference between the monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge
Euqalizing current controls signal, and controls signal according to euqalizing current and export euqalizing current to the single battery for needing equalizaing charge；
Or include:
It is generated according to the voltage difference between the monomer ceiling voltage and the voltage of the single battery of inactive equalizaing charge
Euqalizing current controls signal, and controls signal according to euqalizing current and export euqalizing current to the single battery for needing equalizaing charge.
5. according to the method described in claim 4, it is characterized in that, the method also includes:
It is supplied according to the single battery quantity in equalizaing charge or according to the power supply that the monomer ceiling voltage closes equalizaing charge
It gives.
6. lead-acid accumulator is balanced and monitoring system characterized by comprising engine control system (100) and with battery list
The slave monitoring modular (200) that body is arranged in parallel；Wherein,
Slave monitoring modular (200) is arranged in a one-to-one correspondence with single battery, for obtaining battery list in parallel therewith in real time
The voltage and euqalizing current of body are simultaneously exported to the engine control system (100), and according to the engine control system (100)
The slave machine control signal of output carries out equalizaing charge control to single battery in parallel therewith；
The voltage for the single battery that the engine control system (100) is used to be exported according to the slave monitoring modular (200)
It determines and is exported from machine control signal to the slave monitoring modular (200) described in the single battery for needing equalizaing charge and generation,
And according to the power supply of the single battery quantity control equalizaing charge in the voltage of single battery or equalizaing charge.
7. lead-acid accumulator equilibrium according to claim 6 and monitoring system, which is characterized in that the slave monitoring modular
It (200) include: voltage collection circuit (21), euqalizing current Acquisition Circuit (22), equalizing charge controlling circuit (23), slave control
Unit (24) and slave communication unit (25)；Wherein,
The slave communication unit (25) for realizing the slave control unit (24) and the engine control system (100) it
Between communication；
The voltage signal that the voltage collection circuit (21) is used to acquire single battery is exported to the slave control unit
(24)；
The euqalizing current signal that the euqalizing current Acquisition Circuit (22) is used to acquire single battery is exported to the slave control
Unit (24) processed；
The slave control unit (24) is used to export to the host to control by the voltage signal and euqalizing current signal
It unites (100), and defeated according to the slave machine control signal generation euqalizing current control signal of the engine control system (100) output
Out to the equalizing charge controlling circuit (23)；
The equalizing charge controlling circuit (23) is used to control signal adjustment according to the euqalizing current and carry out to single battery
Euqalizing current when equalizaing charge.
8. lead-acid accumulator equilibrium according to claim 7 and monitoring system, which is characterized in that the slave monitoring modular
It (200) further include temperature collection circuit (26), it is defeated for acquiring the connection strap temperature data on single battery positive and negative electrode pole
Out to the slave control unit (24)；
The slave control unit (24) is also used to the connection strap temperature data on the single battery positive and negative electrode pole is defeated
Out to the engine control system (100).
9. lead-acid accumulator equilibrium according to claim 8 and monitoring system, which is characterized in that the engine control system
It (100) include: the first communication unit (12), the power supply control circuit (13) of equalizaing charge and master machine control unit (11),
Wherein,
First communication unit (12) for realizing the slave monitoring modular (200) and the master machine control unit (11) it
Between communication；
The voltage signal that the master machine control unit (11) is used to be exported according to the slave monitoring modular obtains monomer highest electricity
Voltage difference between pressure, monomer ceiling voltage and the voltage of other single batteries, and according to the monomer ceiling voltage and
The voltage difference, which determines the single battery for needing equalizaing charge and generates to export from machine control signal to the slave, monitors mould
Block (200)；And according to the single battery quantity or the generation equalizaing charge of monomer ceiling voltage in voltage difference, equalizaing charge
Power supply control signal export to the power supply control circuit (13) of the equalizaing charge；
The power supply control circuit (13) of the equalizaing charge includes switching switch, for the power supply according to the equalizaing charge
The opening and closing of supply control signal control switching switch, to start or close the power supply of equalizaing charge.
10. lead-acid accumulator equilibrium according to claim 9 and monitoring system, which is characterized in that host control system
It unites (100) further include: battery total voltage Acquisition Circuit (14), battery total current Acquisition Circuit (15), supply current acquisition
Circuit (16), insulation detecting circuit (17) and second communication module (18), wherein
The battery that the master machine control unit (11) is also used to receive battery total voltage Acquisition Circuit (14) acquisition is total
Voltage signal, the battery total current signal of the battery total current Acquisition Circuit (15) acquisition, supply current acquisition
The supply current signal and institute that the battery of circuit (16) acquisition is powered entire lead-acid accumulator equilibrium and monitoring system
It states insulation detecting circuit (17) and the detection data of Insulation monitoring acquisition is carried out to battery and via the second communication module
(18) it is exported again via the second communication module (18) after exporting or being analyzed and processed to above-mentioned data.
Applications Claiming Priority (2)
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|---|---|---|---|
| CN201810941772 | 2018-08-17 | ||
| CN2018109417723 | 2018-08-17 |
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| CN109103955A true CN109103955A (en) | 2018-12-28 |
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| CN111181226A (en) * | 2020-02-28 | 2020-05-19 | 湘投云储科技有限公司 | Energy storage system and control method thereof |
| CN114257087A (en) * | 2021-12-22 | 2022-03-29 | 中船重工黄冈水中装备动力有限公司 | Constant-current power supply device and balance control method thereof |
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Application publication date: 20181228 |