CN1333589A - High power intelligent charging machine and charging method thereof - Google Patents
High power intelligent charging machine and charging method thereof Download PDFInfo
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- CN1333589A CN1333589A CN00117003A CN00117003A CN1333589A CN 1333589 A CN1333589 A CN 1333589A CN 00117003 A CN00117003 A CN 00117003A CN 00117003 A CN00117003 A CN 00117003A CN 1333589 A CN1333589 A CN 1333589A
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Abstract
The present invention discloses a high-power intelligent charging machine and its charging method. Said charging machine includes controllable rectification circuit and control unit, also includes monitoring circuit, D/A conversion circuit, A/D conversion circuit and trigger circuit. Said invention adopts a current variable charging method, according to the detected quantity of electricity in the accumulator, initially it uses heavy-current to charge, then progressively reduces current until the charged electric quantity is enough, the current can be reduced to zero, so that the charging operation can be automatically implemented according to predefined charging curve. Besides, said invented charging machine is intelligent, can greatly prolong life of accumulator, shorten charging time and can save energy.
Description
The present invention relates to a kind of high power intelligent charging machine, particularly a kind of intelligent universal high power intelligent charging machine.
High power intelligent charging machine is used for the charging of high-power battery.And the application of high-power battery is quite extensive; for example at the inner flat bed transport vehicle, the storage battery forktruck of using in the transportation that have storage batterys such as high-power lead acid accumulator or ickel-cadmium cell that load and unload of the goods in railway, harbour, all kinds of warehouses; because it utilizes rechargeable storage battery to be the energy; have that use cost is lower, noise is little, free of contamination substantially advantage; very favourable to environmental protection; therefore be the preferred car type of internal institutions loading and unloading such as railway, industrial and mining enterprises and short-distance transport, use very extensive.In addition, along with the reinforcement day by day of people's environmental consciousness, can predict electric automobile will obtain to widely popularize and use in 21st century, therefore be applicable to that the performance of the high power intelligent charging machine of high-power battery also will become more and more important.
Effort through many decades, high power intelligent charging machine (or charging device, charging device) experienced selenium sheet rectifier one → simple silicon rectifier-→ manual voltage regulation formula silicon rectifier-→ the manual adjustable silicon controlled rectifier-→ constant current or constant pressure type a plurality of stages such as charger stage by stage, the convenience of its stability, reliability, operation, charge efficiency have obtained very big progress, relatively shortened the charging interval, have prolonged the life of storage battery.
In storage battery being carried out the additional high power charging device of the energy, selenium sheet rectifier or simple silicon rectifier are the ancestors of modern charger, eliminate already because of its practicality is strong, shortcoming is a lot of.More the having of present domestic use: the one, manual voltage regulation formula silicon rectifier or manual adjustable silicon controlled rectifier, this charging device is simple but be subject to the influence that line voltage rises and falls and the variation significantly of charging current takes place.When charging current was too small, storage battery filled deficiency; When charging current is excessive, damage charger or storage battery easily, the charging interval is also long.This class charger is listed superseded ranks already in and is withdrawed from use gradually.The 2nd, the constant voltage charge machine, output voltage is constant during its work.At the beginning of charging, the output voltage pressure reduction owing to accumulator voltage is very low with charger causes that charging current is excessive greatly; In charging process, cause the minimizing rapidly of charging current owing to the rising of accumulator voltage.This class charger equally also exists easy damage charger or storage battery and long shortcoming of charging interval.Rare at present.The 3rd, quick charger.This machine shortens the charging interval to improve charging current exponentially.Though be aided with depolarising measure (the microsecond order of magnitude of gap discharge between charge period,) but because charging current all too big (0.3-0.4C), the battery liquid temperature is very high so that violent boiling during charging, active principle on the accumulator plate comes off very soon, storage battery has been caused fatal damage, and the life of storage battery shortens dramatically; Electric energy does not resolve into hydrogen and oxygen to a large amount of water when charging simultaneously, has wasted the energy greatly, and is popular with users at present and withdraw from the market gradually.The 4th, constant current is charger stage by stage, and it is the maximum charger of present domestic use.This machine adopted than large current charge in the phase I of charging, reduced by half in charging second stage charging current.It is compared with other old-fashioned chargers, and charging current is constant, and the influence that not risen gradually by line voltage and accumulator voltage has prolonged life-span of storage battery to a certain extent, has shortened the charging interval, has saved the energy.But its charging effect is still not ideal enough, and charge function is single, does not also have intelligent functions, let alone realizes network management.In addition, existing charger also exists other this problem, and for example: because China is vast in territory, the temperature difference is very big throughout the year.If the temperature of storage battery is too high in charging process, temperature rise is excessive, will accelerate the inefficacy of active principle on the accumulator plate, even come off, directly influence the life-span of storage battery; During the plurality of groups of storage batteries serial connection charge, the capacity of every group storage battery, newness degree, discharge scenario may be inconsistent, therefore sufficient already, the sufficient as yet situation of batteries that has of the batteries that may produce.If sufficient storage battery continues charging, not only waste electric energy, and will damage storage battery.If Chong Zu storage battery do not stop the charging, with influence the battery power consumption equipment operation.
By above analysis, domestic general charger exists various shortcomings at present as can be known.
One of purpose of the present invention is to provide a kind of converting charge machine of various advantages of the simultaneously comprehensive various existing high power intelligent charging machines of various shortcomings that can overcome above prior art.
Two of purpose of the present invention is to provide a kind of charger that has the newness degree of automatic identification storage battery and work as its sufficient shutdown and alarm function.
It is a kind of to plurality of groups of storage batteries group serial connection charge the time that three of purpose of the present invention is to provide, and has the charger of the function of sufficient battery of identification respectively.
Four of purpose of the present invention is to provide a kind of and is equipped with and central primary control computer interconnection communication configuration software, can realize the multimachine networking and carry out the intelligent charging machine that central cluster is monitored by main control computer.
Five of purpose of the present invention is to provide a kind of charger with function that the charging process curve can demonstrate in advance.
Six of purpose of the present invention is to provide a kind of charger with temperature debugging functions, and this charger is revised the output current of charger according to detected ambient temperature.If ambient temperature is higher, the electric current of charger output will be than predetermined suitable minimizing, to prolong the life-span of storage battery; Otherwise the electric current of charger output will be than predetermined suitable increase, to shorten the charging interval.
High power intelligent charging machine of the present invention, comprise: controlled rectification circuit and control unit, it is characterized in that also comprising observation circuit, D/A change-over circuit and A/D change-over circuit and circuits for triggering, control unit wherein is a CPU, and the normal pressure alternating current enters the controlled rectification circuit rectification after the input of input electrical network.Import the parameter of batteries to be charged then, the charging data that observation circuit will monitor are imported CPU after the A/D change-over circuit is converted to digital signal, these data input trigger circuit after entering the D/A control circuit after the central processing unit for processing to be converted to analog signal is controlled controlled rectification circuit at last.
The charging method of high power intelligent charging machine of the present invention, it is characterized in that comprising following steps: the normal pressure alternating current enters the controlled rectification circuit rectification after the input of input electrical network, import batteries to be charged again, the charging data that observation circuit will monitor Input Control Element after the A/D change-over circuit is converted to digital signal, input trigger circuit after these data enter the D/A control circuit to be converted to analog signal after control unit is handled is controlled controlled rectification circuit at last.
The method of high power intelligent charging machine autoconverter control charging of the present invention is as follows: the terminal voltage value (analog signal) of battery flowmeter charge circle 5 detected storage batterys is converted to digital signal v by A/D change-over circuit 7 in the charging process
1The current value of the current output of charger (analog signal) also converts digital signal i to by A/D change-over circuit 7
1Magnitude of voltage v
1The charging curve math equation that stores with control program storage circuit 10 carries out quick computing, draws due current value i under current charge mode and the parameter current
1'.Then i
1With i
1' compare: if i
1＜i
1', CPU 8 is sent instruction, makes i
1Increase; If i
1＞i
1', 8 of CPU make i
1Reduce.So constantly revise, until i
1=i
1', reach a dynamic balance point.Along with the carrying out of charging process, the terminal voltage of storage battery raises gradually, Microcomputer Detecting to magnitude of voltage be v
2, the current value i of the current output of charger
2Quick computing through the charging curve math equation draws due current value i under current charge mode and the parameter current
2'.And then i
2With i
2' comparing: CPU 8 is sent revision directive again.So constantly revise, until i
2=i
2', reach another dynamic balance point.i
2So, along with the passing of charging process, balance point has promptly been formed one and has been similar to the serpentine curve of writing across the page one by one.During its expression charging beginning, the voltage of storage battery is lower, and the output current of charger is bigger; Along with the rising gradually of battery tension, the output current of charger reduces gradually; When storage battery nearly was full of, charging current reduced rapidly; When storage battery was full of, charging current was kept to zero, the charging auto-shut-off.This charging process finishes, and charger enters initial condition once more, prepares charging next time.
Particularly, the present invention has following technical functionality and effect:
1 converting charge function.Under the converting charge pattern, closely monitor the accumulator electric-quantity situation in the whole charging process all the time, change the output current of charger at any time according to the math equation that stores in the machine: the rising gradually of accumulator electric-quantity, the output current of charger descends gradually; Accumulator electric-quantity is full of the back charging current and is reduced to the shutdown automatically of zero back fast.Can further shorten the charging interval like this, prolong the life of storage battery, energy savings.
2 contain that unsteady flow control charging, constant current are charged stage by stage, five kinds of present existing or charge modes of not having such as the threshold charging is charged, decided in constant current initial charge, constant current constant voltage stage by stage, finish the working method that the preceding added-time charges, timing is charged with the charging under above five kinds of patterns, can fully satisfy user's various charging requirement.
3 discern the newness degree of storage battery automatically, and sufficient promptly automatic shutdown is alarm also.To avoid more outmoded storage battery after abundance, to continue,, shorten charging interval and energy savings to prolong the life of storage battery with wasting phenomenon than large current charge.Intelligent charging machine of the present invention is in when charging, on one side charger monitors the rising situation of accumulator electric-quantity, during calculating accumulator electric weight rising on one side and the angle between the time.If less than certain predetermined angle, charger thinks that promptly storage battery is outmoded, should in time stop to continue charging, to prolong the life of storage battery, shorten charging interval and energy savings.
During 4 plurality of groups of storage batteries group serial connection charges, sufficient battery be can discern respectively,, charging interval and energy savings shortened to prolong the life of storage battery.
Be equipped with in 5 machines and central primary control computer interconnection communication configuration software, can realize the multimachine networking and carry out the central cluster monitoring by main control computer.This communication configuration software adopts graphical display, visual friendly interface, and various operations all have prompting, understandable easy.This communication configuration software is provided with secondary password (administrator password and operator's password, the password number is not limit).The password input error can't be started shooting, and higher level's password can cover and revise subordinate's password, and limiting operation at the corresponding levels can not be crossed in subordinate's password.Being provided with of the start of charger and parameter can be by central primary control computer centralized control, also can in-local.The charging process of each charger can be monitored in real time.Can preserve or show the historical data of on duty and former each class work form and charger and storage battery.All operations process, charge parameter and alarm logging can show on screen or print.Make things convenient for the inquiry and the service management of higher authority greatly.
6 various charging process curves can be demonstrated in advance, so that operating personnel select reasonable, the most most economical charge parameter and curve according to actual charge condition.Because this charger has multiple charge mode, each operating personnel is not very familiar various charge modes.The converting charge pattern of this prow wound particularly, general operating personnel operate first.In order to allow operating personnel select reasonable, the most most economical charge parameter and curve according to actual charge condition, the present invention has increased the function that the main flex point of the charging curve that will carry out is demonstrated in advance.For the convenience of the user, in charging process, also can revise and do not influence the carrying out of charging process.
Contain the temperature correction function in 7 machines, in charging process,, revise the output current of charger automatically according to ambient temperature.If ambient temperature is higher, the electric current of charger output will be than the suitable minimizing of predetermined value, to prolong the life-span of charger and storage battery; Otherwise the electric current of charger output will be than the suitable increase of predetermined value, to shorten the charging interval.
Fig. 1 is the charge graph of converting charge pattern of the present invention;
Fig. 2 is the charge graph of the constant current initial charge pattern of prior art;
Fig. 3 is the constant current charge graph of charge mode stage by stage of prior art;
Fig. 4 is the charge graph of the constant-current constant-voltage charging pattern of prior art;
Fig. 5 is a charge graph of deciding the threshold charge mode of the present invention;
Fig. 6 is the functional-block diagram of a preferred embodiment of the present invention;
Fig. 7 is the main program block diagram in a preferred embodiment of the present invention;
Fig. 8 is that the charge parameter in a preferred embodiment of the present invention is measured calculation process subprogram block diagram;
Fig. 9 is provided with the subprogram FB(flow block) for the parameter in a preferred embodiment of the present invention;
Figure 10 is the charging preview subprogram FB(flow block) in a preferred embodiment of the present invention;
Figure 11 is the charge mode conversion routine FB(flow block) in a preferred embodiment of the present invention;
Figure 12 is that the storage battery newness degree in a preferred embodiment of the present invention is differentiated the subprogram FB(flow block);
Figure 13 is the sufficient subprogram FB(flow block) of differentiating of the plurality of groups of storage batteries in a preferred embodiment of the present invention;
Figure 14 is the operation principle FB(flow block) of the converting charge in a preferred embodiment of the present invention.
Below in conjunction with accompanying drawing a preferred embodiment of the present invention is described.
As shown in Figure 6, a preferable charger of executing example of the present invention comprises: controlled rectification system and host computer system, and wherein the controlled rectification system comprises: input electrical network 1, controlled rectification circuit 2, phase-shift trigger circuit 16; Host computer system comprises: fault judgement circuit 4, battery flowmeter charge circle 5, charging current observation circuit 6, A/D change-over circuit 7, CPU 8, bus 9, control program storage circuit 10, data-latching circuit 11, charge parameter status display circuit 12, charge parameter input circuit 13, D/A change-over circuit 14, temperature sensing circuit 15, with communication interface circuit 17, the shutdown control circuit 18 of CSRC computer networking.
In the controlled rectification system of charger of the present invention, adopt the dedicated trigger device that the linearity is good, phase shift range is wide, the energy broad pulse triggers to form phase-shift trigger circuit 16.By the control voltage that the D/A change-over circuit 14 of host computer system is sent here phase-shift trigger circuit 16 is controlled, the phase shift trigger impulse of its controlled output removes to trigger the high-power silicon controlled rectifier in the controlled rectification circuit 2, changes their pilot angle α.Thereby the electric current of charger output is changed.
After the charger energising of the present invention, host computer system enters init state, under the control of CPU 8, battery flowmeter charge circle 5, charging current observation circuit 6, ambient temperature detection circuit 15 are sent into A/D change-over circuit 7 to detected analog signal separately; Convert digital signal to by A/D change-over circuit 7 and send into data-latching circuit 11, under the control of CPU 8, prepare to accept the charge parameter of charge parameter input circuit 13 inputs in conjunction with control program storage circuit 10.Behind charge parameter input circuit 13 input charge parameters, after the data operation of process CPU 8 and control program storage circuit 10, the processing, CPU 8 is sent charging instruction, convert control voltage to through D/A change-over circuit 14 again, control phase-shift trigger circuit 16, trigger and the control silicon controlled angle of flow, the output-controlled direct current of charger is to battery charging.The temperature analog signal of being sent here by temperature sensing circuit 15 simultaneously converts digital signal to through A/D change-over circuit 7, revises the direct current of output under the control of CPU 8.If charger of the present invention is networked, then communication interface circuit 17 be responsible for and the CSRC computer between combined network communication.
Introduce the function of each element circuit below: 1. the fault judgement circuit 4: have more comprehensive protection warning function.If charger output open circuit, short circuit or accumulator polarity connect instead, charger is the failure judgement and the shutdown of reporting to the police immediately, and shows failure cause.If accumulator polarity connects instead, charger can't start, and also shows failure cause.If charger output current overload or storage battery input current overload; can import CPU 8 to this overload signal fast; send the warning off signal through after the calculation process by control program storage circuit 10; protected charger can not damage because of overload effectively, the protection storage battery can not damage because of input current is excessive.2. battery flowmeter charge circle 5: in charging process, this battery flowmeter charge circle can detect the electric weight situation of batteries automatically.This electric weight situation is sent into CPU 8 computings after converting digital signal to through A/D change-over circuit 7, export by the electric weight situation of batteries and different charge modes by control program storage circuit 10 again, correspondingly control the voltage control silicon controlled angle of flow, the electric current of charger output is changed by predetermined charging curve.3. the charging current observation circuit 6: in charging process, this charging current observation circuit can detect the charging current of output automatically.Charging current is sent into CPU 8 computings through pre-the amplification after the back converts digital signal to by A/D change-over circuit 7, press the current electric weight situation and different charge modes of batteries by control program storage circuit 10 again, the output control corresponding voltage control silicon controlled angle of flow makes the electric current of charger output change by predetermined charging curve.4.A/D change-over circuit 7:A/D transducer adopts low power consumption multi-channel serial high order digit analog to digital converter.The charging current analog signals, the environment temperature simulation amount conversion of signals that are used for electric weight analog signals, the charger output the detected batteries of charger become high-accuracy digital signal, send into CPU 8 and carry out computing.5. CPU 8: this unit is the core of host computer system.Various detected data are all carried out calculation process by CPU 8, send various control commands then.6. bus 9: bus 9 is general names of address bus, data/address bus and control bus.Data all in the host computer system are all transmitted by different addresses between each element circuit according to CPU 8 with control command.7. the control program storage circuit 10: control program storage circuit 10 is the places of depositing all main programs of the present invention and each seed routine, is provided with comprising: batteries number that subprogram, charge parameter are provided with subprogram, charge mode is provided with subprogram, charging process preview subprogram, charged state parameter measurement interpretative subroutine, battery condition parameter display subroutine etc.The detected various data of host computer system are through computing, the processing of CPU 8, the control program that stores by this circuit sends instruction by CPU 8, charger or the corresponding direct current of change output, or sufficient shutdown, or the emergency alarm shutdown, and show relevant parameters and state.8. data-latching circuit 11: the detected various data of host computer system, latch in data-latching circuit 11.After CPU 8 is carried out calculation process, send various control commands then according to the control program of depositing in the control program storage circuit 10.9. the charge parameter status display circuit 12: 8 sections super brightness large area LEDs of double window mouth light-emitting diode has been adopted in the charge parameter demonstration, shows state informations such as current voltage of batteries and charger output current and overload, charging end respectively.Show by charge parameter status display circuit 12, so that operating personnel understand the situation of present charger.10. the charge parameter input circuit 13: charger of the present invention is before start, must the various charge parameters of input and charge mode is set, i.e. input waits to fill the rated voltage, rated capacity, batteries number, charge mode of batteries, whether added-time charging or timing working mode.These are imported by charge parameter input circuit 13, are carried out the control of charging current then by host computer system.Buttons such as the input button of this machine has the storage battery rated voltage to preset, battery rating presets, the batteries number presets, temperature-compensating, parameter increase, parameter reduces, parameter deposits in, charging curve demonstration, charge mode and charging modes conversion.The button input is all controlled by the button supervisory routine.11.D/A change-over circuit 14: after CPU 8 is carried out calculation process, the voltage that sends control according to the control program of depositing in the control program storage circuit 10 is digital signal, must convert it to analog signals by D/A change-over circuit 14, import the phase-shift trigger circuit 16 control silicon controlled angles of flow again, change the direct current of charger output.12. temperature sensing circuit 15: the ambient temperature of charger is detected by temperature sensing circuit 15, convert analog signals to through A/D change-over circuit 14, input CPU 8, the current controling signal that the temperature compensation coefficient of depositing in the control program storage circuit 10 sends CPU 8 is revised.If ambient temperature is higher, the electric current of charger output will be than predetermined suitable minimizing, to prolong the life-span of storage battery; Otherwise the electric current of charger output will be than predetermined suitable increase, to shorten the charging interval.13. communication interface circuit 17: communication interface circuit 17 is interfaces of special and CSRC computer networking communication, and the instruction that the state of all chargers, parameter and CSRC computer send is all carried out data communication and control by communication interface circuit 17.It has the advantages that to reduce switching rate, reduce electromagnetic interference, can carry out high speed and transmit data error freely.14. shutdown control circuit 18: charger runs into charging current excessive (overload) in charging process, perhaps the connecting line of charger and batteries disconnects suddenly, and perhaps charging process finishes naturally, and CPU 8 will be sent shutdown command.This shutdown command is just by shutdown control circuit 18 complete charge processes.
The course of work of charger of the present invention is described below with reference to Fig. 7 to Figure 14.
As shown in Figure 7, charger is after input connects electrical network, output and connects batteries, and the control power knob that closes, charger power on and carry out initialization, and step 71 detects the situation whether No starting is arranged.If any, charger will be reported to the police and be shown failure cause; If charger allows to start, charge parameter can be set earlier, start the batteries number when parameter is set successively and be provided with that subprogram, charge parameter are provided with subprogram, charge mode is provided with subprogram, charging process preview subprogram, charged state parameter measurement interpretative subroutine, battery condition parameter display subroutine, parameter can start charging after setting completed; In charging process, charger is detected various parameters, and input CPU 8 is carried out computing, processing, and under the control of main program, make the output current of charger revise by preceding parameter and the pattern that is provided with of start, charging current changes by predetermined charging curve.
The charge parameter of Fig. 8 is measured the calculation process subprogram: the present invention is in charging process, and charger converts digital signal to through A/D change-over circuit 7 and sends into data-latching circuit 11 at any time by the monitoring circuit monitors charge parameter, and step 81 is read in charge mode; Step 82 is gathered charge parameter; Step 83 is read in charge parameter; Step 84 is judged the curve that charging current is whether up to specification, as it is constant and again from step 82 to meet then phase shift controlling voltage, as do not meet and then enter step 85: judge whether charging current is excessive, as the excessive phase shift controlling voltage and of then reducing, as there is not the excessive phase shift controlling voltage that then increases should be also again from step 82 again from step 82.
Charge parameter at Fig. 9 is provided with in the subprogram: before the charging beginning, must carry out the charge parameter setting earlier: batteries to be charged is set earlier counts N, set gradually first group of rated voltage, rated capacity, batteries number, battery discharge situation, battery newness degree by the input button on the panel again to the batteries of N group, suitable charge parameter and charging modes can be set, and deposit data-latching circuit 11 in.At this moment, the charger main transformer is secondary will choose suitable voltage output class (to improve the power factor of charger).Last charger enters starting state.
As shown in figure 10 charging preview subprogram can be demonstrated the charge parameter of all five kinds of main breakover points of charging curve that this machine contains in advance.These program step 101 judgment task patterns; Step 102 and step 103 are read the math equation of corresponding charge mode and are read the charge parameter of input from data-latching circuit 11; Step 104 solves the math equation of main flex point under this charge mode; Final step 105 shows the charging data of main flex point under this charge mode.
Charge mode conversion routine as shown in figure 11: step 111 is read in the sign of current charge mode; Step 112 is read in the order of convert charging pattern; Then step 113 is changed current charge mode; Final step 114 shows current charge mode.Charger of the present invention has also been contained multiple charge mode commonly used at present when having the converting charge function.By the charge mode conversion routine, can select any one pattern in above-mentioned five kinds of charge modes to charge in start, and can in charging process, arbitrarily change.
The state parameter display subroutine shows voltage, the electric current of the output of current charger, and the reason when breaking down and the current and done state of charger.
With the passing of time storage battery uses, and the active principle on the pole plate can come off gradually, lose efficacy, and shows that under the same service condition, the electric weight that storage battery can hold reduces gradually, and promptly storage battery is outmoded gradually aging.The step 121 of storage battery newness degree differentiation subprogram is as shown in figure 12 read in the current numerical value that holds cell voltage; Step 122 is read in the last numerical value of battery tension for the previous period; Step 123 is calculated recently the numerical value of battery tension rising for the previous period; Step 124 is calculated the angle α of battery tension rising value and time shaft in nearly 15 minutes; Step 125 judges whether storage battery appreciation angle α is less than or equal to used batteries and differentiates angle β; As not being then to turn back to step 121; Then continue step 126 in this way and keep current charge parameter,, shorten the charging interval and prolong the life of storage battery with energy savings.
Because during the plurality of groups of storage batteries serial connection charge, the capacity of every group storage battery, newness degree, discharge scenario may be inconsistent.The sufficient as yet situation of batteries that the batteries that therefore may produce is sufficient already, have.No matter continue charging or stop charging, all unfavorable to storage battery, should handle respectively.Plurality of groups of storage batteries abundance as shown in figure 13 differentiates that respectively subprogram is used in whole charging process, monitors the electric weight situation of each group storage battery closely.If which group storage battery is sufficient, just send alarm signal notifying operation personnel and change, be beneficial to energy savings and prolong the life of storage battery.This program step 131 is read in the rated voltage of N group storage battery; Step 132 is read in the current voltage of N group storage battery; Step 133 judges whether the N group storage battery reaches end voltage; Then enter step 135 in this way and keep less current continuation charging; Step 136 is sent the sufficient sound and light signal of N group storage battery; Is as then not entering step 134 differentiation N group storage battery old? Old in this way then execution in step 135 and step 136; As not being old then continuation charging and getting back to step 133.
In the operation principle FB(flow block) of the converting charge of Figure 14: the terminal voltage value (analog signal) of battery flowmeter charge circle 5 detected storage batterys is converted to digital signal v by A/D change-over circuit 7 in the charging process
1The current value of the current output of charger (analog signal) also converts digital signal i to by A/D change-over circuit 7
1Magnitude of voltage v
1The charging curve math equation that stores with control program storage circuit 10 carries out quick computing, draws due current value i under current charge mode and the parameter current
1'.Step 141 is i
1With i
1' compare: if i
1＜i
1', CPU 8 is sent instruction, makes i
1Increase; If i
1＞i
1', 8 of CPU make i
1Reduce.So constantly revise, until i
1=i
1', reach a dynamic balance point.Along with the carrying out of charging process, the terminal voltage of storage battery raises gradually, Microcomputer Detecting to magnitude of voltage be v
2, the current value i of the current output of charger
2Quick computing through the charging curve math equation draws due current value i under current charge mode and the parameter current
2'.And then i
2With i
2' comparing: CPU 8 is sent revision directive again.So constantly revise, until i
2=i
2', reach another dynamic balance point.So, along with the passing of charging process, balance point has promptly been formed one and has been similar to the serpentine curve of writing across the page one by one.During its expression charging beginning, the voltage of storage battery is lower, and the output current of charger is bigger; Along with the rising gradually of battery tension, the output current of charger reduces gradually; When storage battery nearly was full of, charging current reduced rapidly; When storage battery was full of, charging current was kept to zero, the charging auto-shut-off.This charging process finishes, and charger enters initial condition once more, prepares charging next time.
Claims (18)
1. high power intelligent charging machine, comprise controlled rectification circuit and control unit, it is characterized in that described control unit is made up of CPU, control program memory circuit and data-latching circuit, this charger also comprises: observation circuit is used for failure judgement and/or monitoring of environmental temperature, battery electric quantity, charging current; A/D change-over circuit, the analog signal conversion that is used for monitoring become to send into that data-latching circuit latchs after the digital signal or directly send into CPU and handle; The D/A change-over circuit is used for converting the digital signal after the central processing unit for processing to analog signal; Phase-shift trigger circuit is used to adopt the analog signal control controlled rectification circuit of input to export corresponding charging current;
2. charger as claimed in claim 1 is characterized in that: described observation circuit is fault judgement and display circuit, is used for connecing the inverse time failure judgement and the shutdown of reporting to the police immediately at charger output open circuit, short circuit or accumulator polarity, and shows failure cause.
3. charger as claimed in claim 1 is characterized in that: described observation circuit is a battery flowmeter charge circle, is used for detecting automatically in charging process the electric weight situation of batteries.
4. charger as claimed in claim 1 is characterized in that: described observation circuit is a charging current observation circuit, is used for detecting automatically in charging process the charging current of output.
5. charger as claimed in claim 1 is characterized in that: also comprise a charge parameter status display circuit (12), be used for showing respectively state informations such as current voltage of batteries and charger output current and overload, charging end.
6. charger as claimed in claim 1, it is characterized in that: also comprise a charge parameter input circuit (13), be used for before the charger start, importing and wait to fill rated voltage, rated capacity, the batteries number of batteries and charge mode is set, the working method whether added-time charges or regularly charges, carry out the control of charging current then by host computer system, being provided with all of above charge parameter finished by corresponding button, and the button input is all finished by control unit control.
7. charger as claimed in claim 1, it is characterized in that: described observation circuit is an ambient temperature detection circuit (15), be used to detect the ambient temperature of charger, these data convert digital signal to through A/D change-over circuit (14), input CPU (8), the current controling signal that the temperature compensation coefficient of depositing in the control program storage circuit (10) sends CPU is revised, if ambient temperature is higher, the electric current of charger output will be than predetermined suitable minimizing, otherwise, the electric current of charger output will be than predetermined suitable increase, to shorten the charging interval.
8. charger as claimed in claim 1, it is characterized in that: also comprise a communication interface circuit (17), this communication interface circuit is special and the interface of CSRC computer networking communication, is used to transmit and control the instruction that state, parameter and the CSRC computer of all chargers send.
9. charger as claimed in claim 1, it is characterized in that: also comprise a shutdown control circuit (18), be used for running into charging current excessive (overload), perhaps the connecting line of charger and batteries disconnects suddenly, perhaps charging process finishes naturally, will send shutdown command by CPU (8).
10. the charging method of a high power intelligent charging machine, it is characterized in that comprising following steps: the normal pressure alternating current is input batteries to be charged after input electrical network (11) enters controlled rectification circuit (2) rectification, the value that observation circuit will monitor is Input Control Element after A/D change-over circuit (7) is converted to digital signal, this digital signal enters after control unit is handled to be imported phase-shift trigger circuit (16) after D/A change-over circuit (14) is converted to analog signal and controls controlled rectification circuit at last, makes the output-controlled charging current of charger.
11. method as claimed in claim 10 is characterized in that the treatment step of described control unit is as follows: step 1 is read in the current numerical value that holds cell voltage; Step 2 is read in the numerical value of the battery tension before the scheduled time; Step 3 is calculated the numerical value that the battery tension in the nearest scheduled time rises; Step 4 is calculated the angle α of interior battery tension rising value of the near scheduled time and time shaft; Step 5 judges whether storage battery rising angle α is less than or equal to used batteries and differentiates angle β; As not being then to turn back to step 1; Then continue step 6 in this way and keep current charge parameter.
12. method as claimed in claim 10, it is characterized in that the treatment step of described control unit is as follows: step 1 is read in the rated voltage of N group storage battery; Step 2 is read in the current voltage of N group storage battery; Step 3 judges whether the N group storage battery reaches end voltage; Then enter step 5 in this way and keep less current continuation charging; Step 6 is sent the sufficient sound and light signal of N group storage battery; As not being then to enter step 4 to differentiate whether used batteries of N group storage battery; Old in this way then execution in step 5 and step 6; As not being old then continuation charging and getting back to step 3.
13. method as claimed in claim 10, it is characterized in that the treatment step of described control unit is as follows: step 1 is read in the sign of current charge mode; Step 2 is read in the order of convert charging pattern; The current charge mode of step 3 conversion; Step 4 shows current charge mode.
14. method as claimed in claim 10 is characterized in that the treatment step of described control unit is as follows: step 1 judgment task pattern; Step 2 and step 3 are read the math equation of corresponding charge mode and are read the charge parameter of input from data-latching circuit (11); Step 4 solves the main flex point of math equation under this charge mode; Step 5 shows the charge parameter of main flex point under this charge mode.
15. method as claimed in claim 10, its feature is comprising following steps: charger is monitored the variation of charge parameter at any time, convert digital signal to through A/D change-over circuit (7) and send into data-latching circuit (11), and with central processing unit in after the curvilinear equation comparison, calculation process that store, control phase-shift trigger circuit (15), change thyristor operating angle control voltage, the output voltage of charger, electric current are changed.Charger after CPU (8) calculation process, makes the parameter that monitors at every turn the output voltage of charger, electric current change again, finally makes the output current of charger meet predetermined charging curve.
16. high power intelligent charging machine as claimed in claim 1 is characterized in that: described observation circuit is made of jointly temperature sensing circuit, battery flowmeter charge circle, charging current observation circuit.
17. the charging method of high power intelligent charging machine as claimed in claim 16, it is characterized in that comprising following steps: charger input connect electrical network, output connect batteries after, the control power knob closes, charger powers on and carries out initialization, detect the situation whether No starting is arranged, if any, charger will be reported to the police and be shown failure cause; If charger allows to start, charge parameter can be set earlier, comprising batteries number, charge parameter, charge mode, preview charging process then, measure computing charged state parameter, show the battery condition parameter, start charging subsequently, in charging process, charger is detected various parameters, the input CPU is carried out computing, processing, and under the control of main program, make the output current of charger revise by preceding parameter and the pattern that is provided with of start, charging current changes by predetermined charging curve.
18. the method for a high power intelligent charging machine autoconverter control charging, it is characterized in that: the terminal voltage value (analog signal) of the detected storage battery of battery flowmeter charge circle in the charging process (5) is converted to digital signal v by A/D change-over circuit (7)
1The current value of the current output of charger (analog signal) also converts digital signal i to by A/D change-over circuit (7)
1Magnitude of voltage v
1The charging curve math equation that stores with control program storage circuit (10) carries out quick computing, draws due current value i under current charge mode and the parameter current
1', then i
1With i
1' compare: if i
1＜i
1', CPU (8) is sent instruction, makes i
1Increase; If i
1＞i
1', CPU (8) then makes i
1Reduce, so constantly revise, until i1=i1 ', reach a dynamic balance point, along with the carrying out of charging process, the terminal voltage of storage battery raises gradually, Microcomputer Detecting to magnitude of voltage be v
2, the current value i of the current output of charger
2Quick computing through the charging curve math equation draws due current value i under current charge mode and the parameter current
2'; And then i
2With i
2' comparing: CPU (8) is sent revision directive again.So constantly revise, until i
2=i
2', reach another dynamic balance point.So, along with the passing of charging process, balance point has promptly been formed one and has been similar to the serpentine curve of writing across the page one by one, and during its expression charging beginning, the voltage of storage battery is lower, and the output current of charger is bigger; Along with the rising gradually of battery tension, the output current of charger reduces gradually; When storage battery nearly was full of, charging current reduced rapidly; When storage battery was full of, charging current was kept to zero, the charging auto-shut-off; This charging process finishes, and charger enters initial condition once more, prepares charging next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00117003A CN1121746C (en) | 2000-07-06 | 2000-07-06 | High power intelligent charging machine and charging method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00117003A CN1121746C (en) | 2000-07-06 | 2000-07-06 | High power intelligent charging machine and charging method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1333589A true CN1333589A (en) | 2002-01-30 |
| CN1121746C CN1121746C (en) | 2003-09-17 |
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ID=4586401
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00117003A Expired - Fee Related CN1121746C (en) | 2000-07-06 | 2000-07-06 | High power intelligent charging machine and charging method thereof |
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| CN (1) | CN1121746C (en) |
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| CN100428606C (en) * | 2005-10-21 | 2008-10-22 | 成都龙盾数码通信技术有限公司 | Circuit for controlling series battery charge and discharge |
| CN102055216A (en) * | 2010-10-15 | 2011-05-11 | 国家电网公司 | Charging control method for battery of electric vehicle and equipment thereof |
| CN101567571B (en) * | 2009-01-16 | 2011-08-17 | 上海第二工业大学 | Intelligent charging machine for an electric forklift truck |
| CN102496994A (en) * | 2011-12-09 | 2012-06-13 | 上海师范大学 | Charging control method based on zigbee wireless technology |
| CN102624039A (en) * | 2011-07-12 | 2012-08-01 | 航天东方红卫星有限公司 | Voltage/temperature (V/T) curve control method applied to charging of storage battery |
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