CN208656478U - A kind of slave observation circuit for lead-acid battery equalizaing charge - Google Patents
A kind of slave observation circuit for lead-acid battery equalizaing charge Download PDFInfo
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- CN208656478U CN208656478U CN201821626649.4U CN201821626649U CN208656478U CN 208656478 U CN208656478 U CN 208656478U CN 201821626649 U CN201821626649 U CN 201821626649U CN 208656478 U CN208656478 U CN 208656478U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A kind of slave observation circuit for lead-acid battery equalizaing charge, including voltage collection circuit, euqalizing current Acquisition Circuit, equalizing charge controlling circuit, slave control circuit and slave telecommunication circuit；Slave control circuit, which is used to export the voltage signal of single battery and euqalizing current signal to host, controls way circuit, and generates euqalizing current control signal according to the slave machine control signal that host controls way circuit output and export to equalizing charge controlling circuit；Equalizing charge controlling circuit includes pwm control circuit, reduction voltage circuit and rectification loop circuit；Pwm control circuit is used to generate control signal to reduction voltage circuit according to pwm signal；Reduction voltage circuit is used to be depressured input power according to control signal；Rectification loop circuit is for rectifying the power supply after decompression, generating euqalizing current and exporting to single battery.The utility model can control the slave machine control signal of way circuit according to host, generate euqalizing current, carry out active equalizaing charge to single battery.
Description
Technical field
The utility model relates to battery technology fields.
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 balancing control circuit of accumulator cell charging and discharging is mainly using bidirectional equalization mode at present, by multiple batteries
In battery made of monomer series-connected, an equalizing circuit 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 the circuit 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 storage battery equalizing circuit of use bidirectional equalization mode, single circuit
Damage is likely to affect the operation of whole system.
Utility model content
One purpose of the utility model is to provide a kind of slave observation circuit for lead-acid battery equalizaing charge, with solution
Certainly at least one of above problem.
One aspect according to the present utility model provides a kind of slave monitoring electricity for lead-acid battery equalizaing charge
Road, including voltage collection circuit, euqalizing current Acquisition Circuit, equalizing charge controlling circuit, slave control circuit and slave communication
Circuit；
Slave telecommunication circuit is for realizing the communication between slave control circuit and host control way circuit；
The voltage signal that voltage collection circuit is used to acquire single battery is exported to slave control circuit；
The euqalizing current signal that euqalizing current Acquisition Circuit is used to acquire single battery is exported to slave control circuit；
Slave control circuit is used to export the voltage signal of single battery and euqalizing current signal to host and control always
Circuit, and generate euqalizing current control signal according to the slave machine control signal that host controls way circuit output and export to equilibrium and fill
Electric control circuit, it is pwm signal that euqalizing current, which controls signal,；
Equalizing charge controlling circuit includes pwm control circuit, reduction voltage circuit and rectification loop circuit；Pwm control circuit is used for
Control signal is generated to reduction voltage circuit according to pwm signal；Reduction voltage circuit is used to be depressured input power according to control signal；
Rectification loop circuit is for rectifying the power supply after decompression, generating euqalizing current and exporting to single battery.
The hardware configuration mode of slave observation circuit provided by the utility model, can voltage to single battery and
Euqalizing current carries out real-time monitoring, and the slave machine control signal of way circuit can be controlled according to host, euqalizing current is generated, to be
The active equalizaing charge of single battery provides slave monitoring.
In some embodiments, reduction voltage circuit is connect with battery bus, and input power is battery bus power source.By
This, provides input power by battery bus for reduction voltage circuit, provides euqalizing current without relying on external power supply, make circuit more
It simplifies.
In some embodiments, equalizing charge controlling circuit further includes input filter circuit, is used for input power
It is filtered, and exports to reduction voltage circuit.Thereby, it is possible to filter the interference signal of input power, higher-quality input is obtained
Power supply.
In some embodiments, equalizing charge controlling circuit further includes output filter circuit, is used for collector ring electricity
The euqalizing current of road output is filtered, and is exported to single battery.Thereby, it is possible to filter the interference signal of euqalizing current,
Obtain higher-quality euqalizing current.
In some embodiments, equalizing charge controlling circuit further includes that counnter attack fills circuit, controls electricity with equalizaing charge
The euqalizing current output end and single battery on road connect, for preventing the current flowing backwards of single battery.Thereby, it is possible to anti-
Only the current flowing backwards of single battery cause signal interference to slave observation circuit.
It in some embodiments, further include sampling resistor, the euqalizing current for being connected to equalizing charge controlling circuit is defeated
In outlet；
The voltage value that euqalizing current Acquisition Circuit is used to acquire sampling resistor both ends is exported to slave control circuit；
Slave control circuit is also used to be obtained according to the voltage value at sampling resistor both ends and the resistance value of sampling resistor equal
Weigh current signal.
Thereby, it is possible to the current value of euqalizing current is easily obtained by sampling resistor.
In some embodiments, further include isolation DC power supply circuit, be used to be filtered battery bus power source
And it exports and powers to slave control circuit for it.It is slave control thereby, it is possible to filter the interference signal in battery bus power source
Circuit processed provides higher-quality power supply.
In some embodiments, pwm control circuit includes PWM processing circuit, pwm chip circuit and decompression control
Circuit；Reduction voltage circuit includes transformer；Wherein,
PWM processing circuit is for handling the pwm signal that slave control circuit exports and being exported to pwm chip
Circuit；
Pwm chip circuit is used to generate voltage down control signals simultaneously according to the pwm signal after PWM processing circuit processes
It exports to voltage reduction circuit；
Voltage reduction circuit includes switch element, and switch element is used to adjust the first of transformer according to voltage down control signals
The input voltage of grade lateral coil.
The defeated of the primary side coil of transformer is realized by operational amplifier, pwm chip and switch element as a result,
Enter the adjusting of voltage.
In some embodiments, by photoelectrical coupler, by treated, pwm signal is exported to PWM PWM processing circuit
Control chip circuit.
Thereby, it is possible to carry out signal isolation by photoelectrical coupler, interference is reduced.
In some embodiments, further include temperature collection circuit, be used to acquire single battery positive and negative electrode pole
Connection strap temperature data export to slave control circuit；
Slave control circuit, which is also used to export connection strap temperature data to host, controls way circuit.
Thereby, it is possible to the temperature to single battery to be monitored, and provide number for the performance state monitoring of single battery
According to source.
Detailed description of the invention
Fig. 1 is the lead-acid accumulator equalizaing charge of one embodiment of the utility model and the circuit block diagram of monitoring circuit；
Fig. 2 is the circuit block diagram of the slave observation circuit of one embodiment of the utility model；
Fig. 3 is the circuit diagram of the slave control circuit of one embodiment of the utility model；
Fig. 4 is the circuit diagram of the isolation DC power supply circuit of one embodiment of the utility model；
Fig. 5 is the circuit diagram of the slave telecommunication circuit of one embodiment of the utility model；
Fig. 6 is the circuit diagram of the voltage collection circuit of one embodiment of the utility model；
Fig. 7 is the equalizing charge controlling circuit of one embodiment of the utility model and the circuit diagram of sampling resistor；
Fig. 8 is the circuit diagram of the euqalizing current Acquisition Circuit of one embodiment of the utility model；
Fig. 9 is the circuit diagram of the temperature collection circuit of one embodiment of the utility model；
Figure 10 is that the host of one embodiment of the utility model controls the circuit block diagram of way circuit；
Figure 11 is the circuit diagram of the first telecommunication circuit of one embodiment of the utility model；
Figure 12 is the circuit diagram of the single chip machine controlling circuit of one embodiment of the utility model；
Figure 13 is the circuit diagram of the storage circuit of one embodiment of the utility model；
Figure 14 is the circuit diagram of the real time clock circuit of one embodiment of the utility model；
Figure 15 is the circuit diagram of the power supply control circuit of the equalizaing charge of one embodiment of the utility model；
Figure 16 is the total voltage Acquisition Circuit of one embodiment of the utility model and the circuit diagram of insulation detecting circuit；
Figure 17 is the circuit diagram of the total current Acquisition Circuit of one embodiment of the utility model；
Figure 18 is the circuit diagram of the host supplying power circuit of one embodiment of the utility model；
Figure 19 is the circuit diagram of the supply current Acquisition Circuit of one embodiment of the utility model；
Figure 20 is the circuit of the positive supply power supply circuit of the Hall sensor power supply circuit of one embodiment of the utility model
Figure；
Figure 21 is the circuit of the negative supply power supply circuit of the Hall sensor power supply circuit of one embodiment of the utility model
Figure；
Figure 22 is the circuit diagram of the second telecommunication circuit of one embodiment of the utility model；
Figure 23 is the circuit diagram of the third communication circuit of one embodiment of the utility model.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
The utility model provides the hardware configuration mode of a kind of lead-acid accumulator equalizaing charge and monitoring circuit, so that skill
Art personnel can carry out more convenient and fast development process under such hardware configuration.The utility model relates to single-chip microcontroller, chip
And the specific selection model of other circuit elements can refer to prior art realization.
Lead-acid accumulator equalizaing charge and the integrated circuit structure and working principle of monitoring circuit are said first below
It is bright.
Lead-acid accumulator equalizaing charge and monitoring circuit
Fig. 1 schematically shows lead-acid accumulator equalizaing charge and the prison of a kind of embodiment according to the present utility model
Control circuit.As shown in Figure 1, the circuit includes: that host control way circuit 100 and the slave being arranged in parallel with single battery monitor
Circuit 200；Wherein,
Slave observation circuit 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, and export to host and control way circuit 100, and way circuit 100 is controlled according to host and is exported
Slave machine control signal, equalizaing charge control is carried out to single battery in parallel therewith；
The voltage for the single battery that host control way circuit 100 is used to be exported according to slave observation circuit 200, determining needs
The single battery of equalizaing charge, and generate and export from machine control signal to slave observation circuit 200, and according to single battery
Voltage, single battery quantity control equalizaing charge in equalizaing charge power supply.
The lead-acid accumulator equalizaing charge and the overall work principle of monitoring circuit are as follows:
Slave observation circuit 200 carries out the voltage of the single battery of the inactive equalizaing charge in battery group real-time
Monitoring, host control way circuit 100 obtain monomer ceiling voltage from the voltage of the single battery of the inactive equalizaing charge,
Then 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, such as when the corresponding voltage difference of the single battery is greater than preset value (such as 100mV), really
The fixed single battery needs to carry out equalizaing charge.
Host controls the power supply that way circuit 100 starts equalizaing charge, and generates slave control according to the voltage difference
Signal, slave observation circuit 200 export euqalizing current to the single battery for needing to carry out equalizaing charge according to the signal.
Slave observation circuit 200 carries out real-time monitoring to the single battery in equalizaing charge.Host controls way circuit 100
It being generated in real time according to voltage difference from machine control signal, slave observation circuit 200 adjusts the size of euqalizing current according to the signal,
Such as then increase euqalizing current (compared with preset value) when voltage difference is larger, when voltage difference is smaller (with preset value ratio
Compared with) even negative (i.e. preset value be 0) when, then reduce euqalizing current；And host control way circuit 100 is according to voltage difference
Value or euqalizing current judge that single or multiple single batteries no longer need to carry out equalizaing charge, and generate from machine control signal, from
Machine observation circuit 200 stops the equalizaing charge of the single battery according to the signal, such as when voltage difference is smaller or even is negative
When number, or when euqalizing current is less than preset value (such as 2A), stop the equalizaing charge to the single battery.
Host controls way circuit 100 according to the single battery quantity in equalizaing charge or according to monomer ceiling voltage, sentences
It is disconnected to no longer need to carry out equalizaing charge, the power supply that shutdown signal closes equalizaing charge is issued, such as when monomer ceiling voltage is small
When preset value (such as final discharging voltage of battery group), or when there is no single battery to need to carry out equalizaing charge,
Close the power supply of equalizaing charge.
The lead-acid accumulator equalizaing charge and monitoring circuit, carry out the voltage of each single battery in battery group
Real-time monitoring, and start active equalizaing charge to single battery, active equalizaing charge electric current can be according to needing equilibrium to fill
The voltage change of the single battery of electricity and adjust, so as to farthest to being needed the single battery of equalizaing charge to supplement
Electricity.In charge and discharge process, the voltage of real-time monitoring single battery carries out individual character to the lower single battery of voltage value
Change and strategyization equalizaing charge, according to the voltage of single battery and euqalizing current to single battery during equalizaing charge
Equalizaing charge control is carried out, the voltage of single battery is different, and euqalizing current is different, makes institute by way of supplementing corresponding electric current
There is the voltage of single battery to reach unanimity in charge and discharge process, holds so as to increase considerably the battery of cell batteries
It measures and prolongs its service life.
Separately below to the particular circuit configurations and working principle of slave observation circuit 200 and host control way circuit 100
It is illustrated.
Slave observation circuit
As shown in Fig. 2, slave observation circuit 200 includes: voltage collection circuit 21, euqalizing current Acquisition Circuit 22, equilibrium
Charging control circuit 23, slave control circuit 24, slave telecommunication circuit 25, temperature collection circuit 26, sampling resistor 27 and isolation
DC power supply circuit 28.
The slave control circuit 24 is as shown in figure 3, it is used to export voltage signal and euqalizing current signal to host control
Way circuit processed, and euqalizing current control signal is generated according to the slave machine control signal that host controls way circuit output and is exported to equal
Weigh charging control circuit 23.The slave control circuit 24 includes single-chip microcontroller U19, can select and carry three tunnels or more on the market
A/D converter (ADC) and the list with PWM (Pulse Width Modulation, pulse width modulation) control function
Piece machine, euqalizing current control signal are specially the pwm signal that single-chip microcontroller U19 is generated.The power supply of equalizaing charge is inactive
Before when not closed (i.e. switching switch 131), slave control circuit 24 takes electric to maintain its normal work from single battery；Starting
After the voltage supply of equalizaing charge, slave control circuit 24 takes electricity to maintain its normal work from battery bus (i.e. battery group)
Make.
The isolation DC power supply circuit 28 as shown in figure 4, its be used to be filtered battery bus power source and export to from
Machine control circuit 24 is powered for it.
The slave telecommunication circuit 25 as shown in figure 5, its for realizing slave control circuit 24 and host control way circuit it
Between communication, specifically can be implemented as CAN communication interface, and realize by inductance L3 and the zener diode U17 of differential concatenation
The isolation of DC power supply, to reduce signal interference.
The voltage collection circuit 21 is as shown in fig. 6, its voltage signal for being used to acquire single battery is exported to slave control
Circuit 24 processed.Specifically, the voltage collection circuit 21 acquisition single battery voltage signal and by the voltage signal export to
The ADC input port of slave control circuit 24, slave control circuit 24 read the voltage of the ADC input port and lead to via slave
Believe that the output of circuit 2525 to host controls way circuit 100.Hall sensor chip U20 specifically can be used in the voltage collection circuit 21
It is realized with U23.
The equalizing charge controlling circuit 23 is as shown in fig. 7, it is used for the euqalizing current issued according to slave control circuit 24
Control euqalizing current when signal adjustment carries out equalizaing charge to single battery.The equalizing charge controlling circuit 23 specifically includes
Input filter circuit 231, pwm control circuit 232, reduction voltage circuit 233, rectification loop circuit 234, output filter circuit 235 and
Counnter attack fills circuit 236.
The input filter circuit 231 is connect with battery bus, using battery bus power source as input power, to input
Power supply is filtered, and is exported to reduction voltage circuit 233.
The pwm signal that the pwm control circuit 232 is used to be issued according to slave control circuit 24 generates control signal to decompression
Circuit 233.Specifically, pwm control circuit 232 includes PWM processing circuit, pwm chip circuit and voltage reduction circuit.It should
PWM processing circuit includes operational amplifier U4A, U4B, U4C and U4D and related resistors and capacitor, to pwm signal
It manages and exports to the input terminal of photoelectrical coupler U5.The pwm chip circuit includes pwm chip U3, receives photoelectricity
The output end signal of coupler U5, pwm chip U3 generate voltage down control signals and are exported by its control terminal to decompression and controlled
Circuit processed.
The voltage reduction circuit is used to adjust the input voltage of reduction voltage circuit 233 according to voltage down control signals.Specifically,
The voltage reduction circuit includes switch element, and switch element adjusts the primary side coil of transformer T1 according to voltage down control signals
Input voltage.Switch element in the present embodiment specifically uses power switch tube Q4 and Q5, using extremely low dedicated of on state resistance
Power MOSFET replaces rectifier diode, can significantly improve charge efficiency.
The reduction voltage circuit 233 includes transformer T1, and transformer T1 is depressured input power, and out-put supply then divides
Loop circuit 234 Jing Guo not rectified to be rectified, output filter circuit 235 is filtered, and euqalizing current is formed, finally by equilibrium
The positive and negative anodes output port of electric current is exported to single battery.
The counnter attack fills circuit 236, connect with the cathode output end mouth of euqalizing current, for preventing the electricity of single battery
Stream is anti-to be filled.Zener diode ZD1, triode Q11 specifically can be used and operational amplifier U13 is realized.
(RS1 is in parallel with RS2), and connects and connect with the cathode output end mouth of euqalizing current for the sampling resistor 27.The equilibrium
Current collection circuit 22 is as shown in figure 8, its euqalizing current signal for being used to acquire single battery is exported to slave control circuit
24, which can specifically be realized by Hall sensor H1, acquire the voltage at 27 both ends of sampling resistor
Signal is exported to the ADC input port of slave control circuit 24, and slave control circuit 24 reads the voltage of the ADC input port,
And by by the voltage value of reading divided by the resistance value for the sampling resistor 27 for presetting and being stored in slave control circuit 24,
The current value of euqalizing current can be obtained, and controls way circuit 100 via the output of slave telecommunication circuit 25 to host.
The temperature collection circuit 26 is as shown in figure 9, it is used to acquire the connection strap temperature on single battery positive and negative electrode pole
Degree is according to output to slave control circuit 24.Specifically, which acquires battery list using temperature sensor
The temperature signal of connection strap on the positive and negative pole of body is exported to the ADC input port of slave control circuit 24, slave control circuit
24 temperature for reading the ADC input port, which are exported via slave telecommunication circuit 25 to host, controls way circuit 100.
The course of work of the slave observation circuit 200 is as follows:
When receiving the slave machine control signal that host control way circuit 100 exports, slave control circuit 24 generates equilibrium
Current controling signal is exported to pwm control circuit 232, euqalizing current control signal specifically can be achieved for frequency is certain and duty
Than the pulse width signal for 1%, pwm control circuit 232 controls the output voltage of reduction voltage circuit 233 by duty ratio, thus real
Now equalizaing charge of the output euqalizing current to single battery.Then, slave control circuit 24 is defeated via slave telecommunication circuit 25
The equilibrium that the voltage and euqalizing current Acquisition Circuit 22 for the single battery that voltage collection circuit 21 acquires in real time out acquire in real time
Electric current is to host control circuit 11, and host control circuit 11 is according to the voltage difference of monomer ceiling voltage and the voltage of single battery
Value, export from machine control signal to slave control circuit 24, slave control circuit 24 generate euqalizing current control signal export to
Pwm control circuit 232, by realizing the adjustment of single battery euqalizing current to the adjustment of duty ratio, and in turn by equal
The adjustment for adjusting to realize the voltage of single battery of weighing apparatus electric current, tends to the voltage of single battery and monomer ceiling voltage
Unanimously, the equilibrium of battery group charge and discharge is finally realized.Engine control system 100 is by comparing the battery list in equalizaing charge
The euqalizing current and euqalizing current setting value (such as 2A) of body, when the euqalizing current of the single battery in equalizaing charge is less than
When weighing apparatus current setting value, engine control system 100 is exported from machine control signal to slave control circuit 24, slave control circuit 24
It exports according to euqalizing current control signal is generated from machine control signal to pwm control circuit 232, euqalizing current is made to become 0, thus
Stop the equalizaing charge to single battery.
Host controls way circuit
As shown in Figure 10, host control way circuit 100 includes: host control circuit 11, the first telecommunication circuit 12, equilibrium
Power supply control circuit 13, total voltage Acquisition Circuit 14, total current Acquisition Circuit 15, the supply current Acquisition Circuit of charging
16, insulation detecting circuit 17, the second telecommunication circuit 18, third communication circuit 19, host supplying power circuit 10 and Hall sensor supply
Circuit.
First telecommunication circuit 12 is as shown in figure 11, for realizing slave observation circuit 200 and host control circuit 11
Between communication；Preferably, the first telecommunication circuit 12 can be implemented as CAN communication interface, and pass through inductance L5, L6 and reversed string
Zener diode U14, U20 of connection realize the isolation of DC power supply, to reduce signal interference.
The voltage signal for the single battery that host control circuit 11 is used to be exported according to slave observation circuit obtains monomer
Voltage difference between ceiling voltage, monomer ceiling voltage and the voltage of other single batteries, and according to monomer ceiling voltage
With the comparison result of voltage difference and preset value, the single battery for needing equalizaing charge is determined, and generate defeated from machine control signal
Out to slave observation circuit；And according in voltage difference, equalizaing charge single battery quantity or monomer ceiling voltage with
The comparison result of preset value generates power supply control signal and exports to the power supply control circuit 13 of equalizaing charge.It is preferred that
Ground, host control circuit 11 include single chip machine controlling circuit and the storage circuit that is electrically connected with single chip machine controlling circuit electricity and
Real time clock circuit.
Wherein, single chip machine controlling circuit is as shown in figure 12 comprising market can be selected in single-chip microcontroller U16, the singlechip chip
The upper singlechip chip with the port ADC.The storage circuit is as shown in figure 13, is used to store the preset value of each parameter, preferably
EEPROM (Electrically Erasable Programmable read only memory) memory.The real-time clock
Circuit is as shown in figure 14, provides time parameter for single chip machine controlling circuit.
The power supply control circuit 13 of the equalizaing charge is as shown in figure 15 comprising switching switch 131 is (for diagram side
Just, the switching switch 131 in Fig. 1 and 10 is individually drawn on except the power supply control circuit 13 of equalizaing charge), for according to master
The disconnection and closure for the power supply control signal control switching switch 131 that machine control circuit 11 issues, it is defeated with shutdown or startup
Out to the power supply of the equalizaing charge of slave observation circuit.Preferably, which is controlled by relay, the equilibrium
The power supply control circuit 13 of charging is embodied as control relay circuit.The power supply control circuit 13 of the equalizaing charge
Specifically include switching switch 131, relay, first diode D2, the first triode Q1, first resistor R13 and second resistance
R15；The both ends of the switching switch 131 are electrically connected with the positive and negative anodes of battery bus respectively；The first end and list of first resistor R13
The output port electrical connection of the power supply control signal of piece machine control circuit, second end are electrically connected second resistance R15
First end and the first triode Q1 base stage；The emitter ground connection of the second end of second resistance R15, the first triode Q1；The
The collector of one triode Q1 is electrically connected with the first end of the anode of first diode D2, relay coil respectively；One or two pole
The cathode of pipe D2, the second end of relay coil are electrically connected with power supply VCC12V respectively.
The working principle of the host control circuit 11 is as follows:
Host control circuit 11 is compared by the voltage of each single battery exported to slave observation circuit 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 storage circuit
Calculated voltage difference is compared with the first voltage difference preset value by preset value respectively, when voltage difference is greater than the
When one voltage difference preset value, host control circuit 11 judges and determines the corresponding single battery of the voltage difference to need equilibrium
The single battery of charging.When there is the single battery for needing equalizaing charge, host control circuit 11 generates and exports first
Power supply controls signal to control relay circuit, and control relay closure starts the power supply of equalizaing charge, at this point,
The reduction voltage circuit 233 of slave observation circuit 200 can obtain the higher DC voltage of voltage value from battery bus and be changed into electricity
Pressure is worth lower DC voltage and is used to carry out equalizaing charge to single battery.Meanwhile host control circuit 11 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 the slave observation circuit 200 of setting, the equilibrium for the single battery for needing equalizaing charge is filled in the starting of slave observation circuit 200
Electricity.
After starting equalizaing charge, host control circuit 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 preset value is obtained from storage circuit, will count
The voltage difference of calculating is compared with the second voltage difference preset value respectively, when voltage difference is pre- greater than second voltage difference
If when value, host control circuit 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 observation circuit 200；When voltage difference is default less than second voltage difference
When value, host control circuit 11 generates and exports stop adjustment euqalizing current second from machine control signal, i.e. output pulse width is believed
Number duty ratio no longer change second from machine control signal to slave observation circuit 200；When voltage difference is negative value, host control
Circuit 11 processed generates and output reduces the second of euqalizing current from machine control signal, i.e. output reduces the of pulse width signal duty ratio
Two from machine control signal to slave observation circuit 200；Slave observation circuit 200 is real from machine control signal according to second received
Now to the adjustment of the euqalizing current of the single battery in equalizaing charge.
In battery group discharge process, host control circuit 11 obtains ceiling voltage preset value from storage circuit, by right
Monomer ceiling voltage and ceiling voltage preset value are compared, when the voltage value of monomer ceiling voltage is less than ceiling voltage preset value
When, host control circuit 11 exports second source supply control signal to control relay circuit, controls relay and disconnects, stops
The power supply of equalizaing charge, to stop the equalizaing charge of all single batteries.
In charging process of storage battery set, host control circuit 11 obtains euqalizing current preset value from storage circuit, by right
The euqalizing current and euqalizing current preset value of single battery in equalizaing charge are compared, when the battery in equalizaing charge
When the euqalizing current of monomer is less than euqalizing current preset value, host control circuit 11 exports third and supervises from machine control signal to slave
Slowdown monitoring circuit 200, slave observation circuit 200 stop the equalizaing charge to the corresponding single battery of slave observation circuit 200；When
When single battery quantity in equalizaing charge is reduced to zero, host control circuit 11 exports second source supply control signal extremely
Control relay circuit controls cut-off.
The total voltage Acquisition Circuit 14 as shown in figure 16, is used to acquire the voltage signal of battery bus, and export extremely
Host control circuit 11.Specifically include operational amplifier U17A, U17B, U18A and ADC (Analog-to-Digital
Converter, analog-to-digital conversion) chip U15, the non-inverting input terminal and reverse input end of operational amplifier U17A be separately connected electric power storage
The positive and negative anodes of pond bus, output end connect the reverse input end and ADC chip of operational amplifier U17B, operational amplifier
The output end of U17B connects ADC chip, the reverse input end of the output end connection operational amplifier U18A of ADC chip, and operation is put
The single-chip microcontroller U16 of the output end connection host control circuit 11 of big device U18A, voltage signal is exported to single-chip microcontroller U16.
The insulation detecting circuit 17 as shown in figure 16, is used to detect whether battery to have drain conditions, and exports to master
Machine control circuit 11.Specifically include operational amplifier U22A, U22B, U18B and ADC (Analog-to-Digital
Converter, analog-to-digital conversion) chip U21, the non-inverting input terminal of operational amplifier U22A and the battery carrier of battery group are electrically connected
It connects, output end connects the reverse input end and ADC chip of operational amplifier U22B, and the output end of operational amplifier U22B connects
Meet the reverse input end of the output end connection operational amplifier U18B of ADC chip U21, ADC chip U21, operational amplifier U18B
Output end connection host control circuit 11 single-chip microcontroller U16, when battery drain, thus electric leakage signal is exported to single-chip microcontroller
U16。
The total current Acquisition Circuit 15 as shown in figure 17, is used to acquire the current signal of battery bus, and export extremely
Host control circuit 11.It is preferred that being acquired by Hall sensor.
The host supplying power circuit 10 as shown in figure 18, is used to control way circuit power supply for host.The host supplying power circuit
10 connect with battery bus power source, by being depressured to battery bus power source, generate 12V, 5V, 3.3V voltage to host
Control the chip in way circuit 100, relay is powered.
The supply current Acquisition Circuit 16 as shown in figure 19, be used to acquire battery bus to host control way circuit with
And (i.e. battery group is to entire lead-acid accumulator equalizaing charge for total supply current signal of the equalizaing charge of slave observation circuit
The supply current signal being powered with monitoring circuit), and export to host control circuit 11.It is preferred that being sensed by Hall current
Device is acquired.
The Hall sensor power supply circuit include positive supply power supply circuit (as shown in figure 20) and negative supply power supply circuit (such as
Shown in Figure 21), Hall sensor is powered.
Second telecommunication circuit 18 as shown in figure 22, is used to export the received data of host control circuit 11 to rotating ring and supervises
Control system.The received data of host control circuit 11 may include battery bus voltage, battery bus total current, total confession
(battery bus believes the total supply current for the equalizaing charge that host controls way circuit and slave observation circuit to electric current
Number), the voltage of single battery, euqalizing current, the data such as connection strap temperature on single battery positive and negative anodes pole, output is extremely
After power & environment supervision system, processing and operation can be carried out to these data informations by power & environment supervision system, to obtain battery
The performance information and warning information of whole group battery and single battery, the daily dimension that can be used for instructing maintenance personnel to battery
Shield.Second telecommunication circuit 18 is realized especially by RS485 communication interface.
The third communication circuit 19 is as shown in figure 23, for realizing the communication of host control circuit 11 and debugging system.
It is realized especially by RS485 communication interface.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, or to above-mentioned technical proposal
It is freely combined, these are all within the protection scope of the present invention.
Claims (10)
1. a kind of slave observation circuit for lead-acid battery equalizaing charge, it is characterised in that: including voltage collection circuit (21),
Euqalizing current Acquisition Circuit (22), equalizing charge controlling circuit (23), slave control circuit (24) and slave telecommunication circuit (25)；
The slave telecommunication circuit (25) is for realizing logical between the slave control circuit (24) and host control way circuit
Letter；
The voltage signal that the voltage collection circuit (21) is used to acquire single battery is exported to the slave control circuit
(24)；
The euqalizing current signal that the euqalizing current Acquisition Circuit (22) is used to acquire single battery is exported to the slave control
Circuit (24) processed；
The slave control circuit (24) is for exporting the voltage signal of the single battery and euqalizing current signal to master
Machine controls way circuit, and generates euqalizing current control signal output according to the slave machine control signal that host controls way circuit output
To the equalizing charge controlling circuit (23), the euqalizing current control signal is pwm signal；
The equalizing charge controlling circuit (23) includes pwm control circuit (232), reduction voltage circuit (233) and rectification loop circuit
(234)；The pwm control circuit (232) is used to generate control signal to the reduction voltage circuit (233) according to the pwm signal；
The reduction voltage circuit (233) is used to be depressured input power according to control signal；The rectification loop circuit (234) for pair
Power supply after decompression is rectified, and is generated euqalizing current and is exported to single battery.
2. the slave observation circuit according to claim 1 for lead-acid battery equalizaing charge, it is characterised in that: the drop
Volt circuit (233) is connect with battery bus, and the input power is battery bus power source.
3. the slave observation circuit according to claim 1 for lead-acid battery equalizaing charge, it is characterised in that: described equal
Weighing apparatus charging control circuit (23) further includes input filter circuit (231), is used to be filtered input power, and is exported to institute
State reduction voltage circuit (233).
4. the slave observation circuit according to claim 1 for lead-acid battery equalizaing charge, it is characterised in that: described equal
Weighing apparatus charging control circuit (23) further includes output filter circuit (235), is used for the equal of rectification loop circuit (234) output
Weighing apparatus electric current is filtered, and is exported to single battery.
5. the slave observation circuit according to claim 1 for lead-acid battery equalizaing charge, it is characterised in that: described equal
Weighing apparatus charging control circuit (23) further includes that counnter attack fills circuit (236), electricity balanced with the equalizing charge controlling circuit (23)
Output end and single battery connection are flowed, for preventing the current flowing backwards of single battery.
6. the slave observation circuit according to claim 1 for lead-acid battery equalizaing charge, it is characterised in that: further include
Sampling resistor (27) is connected on the euqalizing current output end of the equalizing charge controlling circuit (23)；
The euqalizing current Acquisition Circuit (22) be used for acquire the sampling resistor (27) both ends voltage value export to it is described from
Machine control circuit (24)；
The slave control circuit (24) is also used to voltage value and sampling resistor according to the sampling resistor (27) both ends
(27) resistance value obtains euqalizing current signal.
7. the slave observation circuit according to any one of claim 1 to 6 for lead-acid battery equalizaing charge, feature
It is: further includes isolation DC power supply circuit (28), be used to be filtered battery bus power source and export to the slave
Control circuit (24) is powered for it.
8. the slave observation circuit according to any one of claim 1 to 6 for lead-acid battery equalizaing charge, feature
Be: the pwm control circuit (232) includes PWM processing circuit, pwm chip circuit and voltage reduction circuit；The drop
Volt circuit (233) includes transformer；Wherein,
The PWM processing circuit is for handling the pwm signal that slave control circuit (24) export and being exported to the PWM
Control chip circuit；
The pwm chip circuit is used to generate decompression control letter according to the pwm signal after the PWM processing circuit processes
Number and export to the voltage reduction circuit；
The voltage reduction circuit includes switch element, and the switch element is used to adjust the change according to voltage down control signals
The input voltage of the primary side coil of depressor.
9. the slave observation circuit according to claim 8 for lead-acid battery equalizaing charge, it is characterised in that: described
By photoelectrical coupler, by treated, pwm signal is exported to the pwm chip circuit PWM processing circuit.
10. the slave observation circuit according to any one of claim 1 to 6 for lead-acid battery equalizaing charge, special
Sign is: further including temperature collection circuit (26), is used to acquire the connection strap temperature number on single battery positive and negative electrode pole
According to output to the slave control circuit (24)；
The slave control circuit (24), which is also used to export the connection strap temperature data to host, controls way circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821626649.4U CN208656478U (en) | 2018-10-08 | 2018-10-08 | A kind of slave observation circuit for lead-acid battery equalizaing charge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821626649.4U CN208656478U (en) | 2018-10-08 | 2018-10-08 | A kind of slave observation circuit for lead-acid battery equalizaing charge |
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| CN208656478U true CN208656478U (en) | 2019-03-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901078A (en) * | 2019-04-18 | 2019-06-18 | 国网冀北电力有限公司承德供电公司 | Cell batteries internal resistance and temperature measuring circuit |
| CN110459821A (en) * | 2019-07-30 | 2019-11-15 | 深圳易马达科技有限公司 | A kind of battery management system and battery |
| CN112003352A (en) * | 2020-09-09 | 2020-11-27 | 南京鼎尔特科技有限公司 | Lead-acid storage battery online weak balance maintenance system based on PWM discharging |
| CN112671078A (en) * | 2021-01-21 | 2021-04-16 | 惠州拓邦电气技术有限公司 | Battery pack consistency control method and device, computer equipment and battery pack |
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2018
- 2018-10-08 CN CN201821626649.4U patent/CN208656478U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901078A (en) * | 2019-04-18 | 2019-06-18 | 国网冀北电力有限公司承德供电公司 | Cell batteries internal resistance and temperature measuring circuit |
| CN110459821A (en) * | 2019-07-30 | 2019-11-15 | 深圳易马达科技有限公司 | A kind of battery management system and battery |
| CN110459821B (en) * | 2019-07-30 | 2021-07-13 | 深圳易马达科技有限公司 | Battery management system and battery |
| CN112003352A (en) * | 2020-09-09 | 2020-11-27 | 南京鼎尔特科技有限公司 | Lead-acid storage battery online weak balance maintenance system based on PWM discharging |
| CN112671078A (en) * | 2021-01-21 | 2021-04-16 | 惠州拓邦电气技术有限公司 | Battery pack consistency control method and device, computer equipment and battery pack |
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