JP3060932B2 - Charge control method and charge control device using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging control method for a storage battery or the like, which can be implemented as a single charging device, and enables optimum charging conditions to be set for various storage batteries. The present invention relates to a technology that enables optimal charging for various charging operations regardless of the type of a storage battery by capturing a storage battery state in real time and correcting a charging condition.

[0002]

2. Description of the Related Art Conventionally, methods for charging a storage battery such as a lead battery are roughly classified into a one-stage constant voltage / constant current system and a two-stage constant voltage / constant current system. This is the difference between whether there is only one constant voltage and constant current region at the time of charging or two, and is determined by various conditions such as the type of storage battery to be charged. The actual charging device is configured to be compatible with only one charging method. This is largely due to the fact that the target storage battery is almost determined, and that the charging operation can be performed by supplying power to the storage battery at a constant voltage or a constant current for a certain period of time. In other words, the work of charging controls the temporal change of the voltage or current value, and the only idea was to control the reaching of the full voltage using a sequencer. FIG. 7 is a block diagram showing a configuration of a charging device based on such a conventional charging method. As shown in the figure, in the conventional charging method, one type of charging profile based on a specific charging method is recorded in the sequencer 100, and the interface substrate 102
Interface board 1 for AC / DC switching regulator (charger) 104 connected through
By sending an execution command from the sequencer 100 via the “02”, charging is performed with the profile recorded in the sequencer 100. The voltage and current during the charging operation are displayed as indicated values of a voltmeter 108 provided between the charger 104 and the storage battery 106 and an ammeter 112 connected to the shunt 110. Further, the temperature of the storage battery 106 during charging is fed back to the charger 104 via the correction circuit 114 by using the thermistor 116 as an input, and is controlled to an appropriate charging voltage. Is done by setting a timer.

[0003]

However, in recent years, the field of use of storage batteries has expanded to an unprecedented extent, for example, in research into unmanned factories due to the progress of FA and research on the practical use of electric vehicles. I have. Accordingly, there are various types of storage batteries corresponding thereto, and it is becoming difficult to cope with only one type of charging device even for one application. Specifically, a variety of unmanned guided vehicles are used in factories that have become increasingly unmanned, and the storage batteries mounted on them also vary in capacity and voltage according to the size and use of the guided vehicles. Against this background, a large number of charging devices must be prepared in order for the conventional charging device to handle this. That is, since the conventional charging device is sequence-controlled, it can cope with only one type of charging method and condition. If various charging conditions are to be set using such a charging device, the contents of the sequence must be rewritten each time. Since this requires a lot of time, it is impossible to frequently deal with different storage batteries, and this is far from the actual situation of unmanned factories at present.

In addition, it is conceivable to introduce a large-capacity storage means such as a computer into the charging device, store all assumed charging profiles as data, and select one of them during the charging operation. Is not
Selecting one optimal profile data from a huge amount of data in a short time is beyond human ability itself and cannot be realized at all.

[0005]

The above object is achieved by the present invention as follows. The present invention provides a charging control method in which the setting of charging conditions and the control during charging in the charging operation can be performed by one arithmetic processing unit. Specifically, the setting parameters of the charging conditions are, for example, setting of an ammeter measurement range, setting of a voltmeter measurement range, setting of a battery temperature coefficient, setting of a constant current value, setting of a constant voltage value, and the like. Are stored in a state where the parameters are classified for each required function, and condition parameters which are the contents to be set for the respective setting parameters are stored in a corresponding state. Subsequently, input of condition parameter data corresponding to one set parameter is sequentially repeated, and a combination of each condition parameter associated with the set data is determined as a charge condition. Therefore, since various parameters that can be considered as a huge number of combinations are sequentially determined in accordance with the setting stage, it is not necessary to select one optimal profile data from the huge amount of data as described above. . By controlling the charger under the charging conditions determined by such a flow, a desired charging operation can be performed on an arbitrary storage battery. Further, during the charging operation, the charging condition is corrected while reading the data such as the charging voltage, the charging current or the temperature of the storage battery in real time, and the charging operation is performed under the correction condition equivalent to the determined charging condition. When the correction is not necessary, it is needless to say that the charging is performed under the set charging condition. Since the present invention is a method as described above, the setting of the charging condition and the control of the actual charging operation can be performed by one arithmetic processing means.

That is, according to the present invention, a plurality of setting parameters that need to be set for the charging operation are distinguished for each stage of the charging condition setting operation, and the contents to be set for each setting parameter are described. Is stored in the charging information storage means in a state in which
According to the setting procedure of the setting parameter, the condition parameter corresponding to one of the setting parameters in the charging information storage means is displayed step by step on the display means, and the selection data corresponding to the condition parameter of the display content is input via the input means. Alternatively, inputting the setting data is repeated in order for all the setting parameters, and a plurality of combinations of the input selection data or one condition parameter associated with the setting data are stored in the charging information storage means. Registered as a charging condition, a charging control signal based on the content of the condition parameter of the registered charging condition is sent from the charger control means to the charger, and at least the charging voltage and the charging current during the charging and the storage battery being charged. The temperature data of the battery as an electrical signal and feed it back to the charger control means And correction control of the operation of the charger so that said charging condition equivalent charging operation that is registered in the charging information storage unit, a charging control method.

[0007] In the charge control device using this charge control method, at least a plurality of setting parameters that need to be set for the charging operation are distinguished for each stage of the charging condition setting operation, and each of the setting parameters is distinguished. Charging information storage means for storing condition parameters corresponding to contents to be set of setting parameters in a state where they are associated with each other; and a condition corresponding to one setting parameter in the charging information storage means in a stepwise manner in accordance with a setting parameter setting procedure. Display input means for displaying a parameter and inputting selection data or setting data corresponding to a condition parameter of the display content, and associating with the selection data or setting data registered as charging conditions in the charging information storage means A charge control signal based on a charge condition consisting of a plurality of combinations of one condition parameter During charging, at least the charging voltage and charging current and the temperature data of the storage battery being charged are read as an electric signal, and the charging operation is performed so that the charging operation is equivalent to the charging condition registered in the charging information storage means. And a charger control means for correcting and controlling the operation of the battery, so that a plurality of types of batteries can be serially charged under different charging conditions for a plurality of types of batteries by replacing batteries. .

[0008]

Next, as an embodiment of the present invention,
A charging flow according to the charging control method of the present invention will be described. The present invention is not limited to the following examples. First, FIG. 1 and FIG. 2 are block diagrams showing the setting parameters stored in the charging information storage means and the storage states of the condition parameters. In the example of FIG. 1, individual setting parameters 3 are associated with the list data 1 of the setting parameters displayed at the beginning of the setting so as to be distinguished for each stage of the charging condition setting operation and to have an independent relationship. Further, a condition parameter 5 which is a content to be set is stored in correspondence with each setting parameter 3. In the example of FIG. 2, the list data 1 of the setting parameters displayed at the beginning of the setting is distinguished for each stage of the charging condition setting operation, and each of the data is hierarchically dependent.
The individual setting parameters 3 are associated with each other, and a condition parameter 5 which is the content to be set is stored in correspondence with each setting parameter 3. That is, in the example of FIG. 1, when setting the charging conditions, first, list data 1 of the setting parameters is displayed, and the setting parameters 3 to be set for a certain charging operation are randomly called in random order, and the corresponding condition parameters 5 are set. Can be set. Therefore, one setting parameter 3
When the condition parameter 5 corresponding to the setting parameter 5 is determined, the process returns to the list data 1 of the setting parameter again, calls the next setting parameter 3 step by step according to the setting procedure, and determines the condition parameter 5 in order. On the other hand, in the example of FIG. 2, when setting the charging condition, first, the list data 1 of the setting parameters is displayed, and the setting parameters 3 to be set for a certain charging operation are sequentially called, and the corresponding condition parameters 5 are set. Is set. Therefore, when the condition parameter 5 corresponding to one setting parameter 3 is determined, the condition parameter 5 corresponding to the next setting parameter 3 is displayed, and the condition parameter 5 corresponding to each setting parameter 3 is determined in order. Things. That is, each setting parameter 3 is set so that the selection data or the input of the setting data of the condition parameter 5 corresponding to one setting parameter 3 becomes a display command of the condition parameter 5 corresponding to the setting parameter 3 in the next stage. They are subordinate and hierarchically related.

Next, examples of setting parameters and condition parameters will be described below. (Setting Parameter) List data 1 of the setting parameter displayed on the display means at the start of setting the charging condition includes:
There are the following: A. Ammeter measurement range setting This is to set the measurement range of the charging current. B. Voltmeter measurement range setting This is for setting the measurement range of the charging voltage. C. Charging mode selection This is for selecting various charging modes such as two-stage constant-voltage / constant-current charging and one-stage constant-voltage / constant-current charging. D. Parameter item selection This is for setting a constant current value and a constant voltage value, setting various timers, and the like in the selected charging mode. E. FIG. Protection setting This is to set condition parameters for detecting a voltage abnormality or a storage battery abnormality. F. Automatic sequence setting The sequence referred to here defines what kind of schedule, such as power reception check, connector output check, or battery state check, should be performed for each charge work separately from the charge conditions. Yes, depending on the type of storage battery, for example. This automatic sequence setting is for selecting this sequence according to the type of storage battery.

As described above, the setting parameters 3 can be exemplified by these six types as typical ones. However, other setting parameters can be considered as necessary, and the number is not limited to this example.

(Condition parameters) For example, A- (1): １1A, A- (2): ２2A, A- (3): ３3A, A- ( 4): ５5 A, A- (5): Ａ10 A, A- (6): ２０20 A, A- (7): ３０30 A, A- (8): ５０50 A, A- (9): １００100 A , A- (10): ２００200 A, A- (11): ３００300 A, A- (12): ５００500 A, etc., a plurality of types of maximum current values are determined.

Depending on the options for setting the voltmeter measurement range of B, for example, B- (1) to 10 V, B- (2) to 20 V, B- (3) to 30 V, B- (4) to 50 V, B- (5) 100V, B- (6) -200V, B- (7) -300V, B- (8) -500V, etc. A plurality of maximum voltage values are determined. Then, the storage battery temperature coefficient setting (B ') which is not displayed as the setting parameter list data 1 is set as the voltmeter measurement range setting of B and the dependent absolute setting parameter 3'. As the condition parameter 5, for example, in the constant voltage control function, the temperature at which the correction signal is output to the charger side is set, as in B '-(1) ○ ° C.

Depending on the choice of the charging mode of C, for example, C- (1) two-stage constant voltage / constant current (current detection type) charging method, C- (2) two-stage constant voltage / constant current (voltage detection type) charging Method, C- (3) 1-stage constant voltage / constant current (current detection type) charging method, C- (4) 1-stage constant voltage / constant current (voltage detection type) charging method Is performed. This C
The selection of the number of target batteries (C ′) not displayed as the setting parameter list data 1 is set as the charging mode range setting and the dependent relative setting parameter 3 ″. As the condition parameter 5, C ′-(1 ) One type C '-(2) Two types is set as the type of storage battery to be charged, either one type or two types, because the charging voltage, charging current or temperature coefficient are almost equal, This is for the case where two storage batteries having different charging parameters, which will be described later, are continuously charged.

By selecting the parameter item D, for example, 2
In the case of the stage constant voltage / constant current (current detection) charging method, D- (1) the first stage constant voltage value, D- (2) the second stage constant voltage value, D- (3) the first stage Constant current value, D- (4) Constant current value of second stage, D- (5) Current value of conversion point from constant voltage region of first stage to constant current region of second stage, D- (6) Various conditions required for controlling the charge profile are set, such as the total time until the end of charging, the time from the start of the constant current region of the second stage to the end of charging, D- (7). .

Depending on the protection setting of E, for example, E- (1) maximum voltage value for charger overvoltage protection, E- (2) minimum voltage value for charger undervoltage protection, E- (3) normal Battery voltage range, E- (4) Normal battery temperature range, E- (5) Normal charging initial current, E- (6) Initial full charge detection time, E- (7) Normal battery capacity magnification, E- (8) As mentioned above, specific parameters for various protection setting functions are set.

By setting the automatic sequence of F, for example, F- (1) standard constant voltage / constant current charging sequence (lead battery), F- (2) rapid charging sequence of alkaline battery with discharge function, F- (3) portable type Various sequences are selected, such as the sequence for the EV charger and the F- (4) spare battery switching type sequence.

The recording system of the setting parameter 3 and the condition parameter 5 shown in the above example in the charging information storage means is as follows.
It is shown in FIG. Each parameter is
The symbols used in the above description, such as A, A- (4) and F- (4), correspond directly.

As shown in the figure, in this example, when a condition parameter 5 corresponding to one setting parameter 3 is set or selected, the next setting parameter 3 which is hierarchically related to the next setting parameter 3 is shifted to the next setting parameter 3. The setting of the condition parameter 5 is performed. However, when two types of C '-(2) are selected in the selection of the number of target batteries (C') in the option of selecting the charging mode of C, after the first setting is completed, A is reset again.
It is sufficient to return to the ammeter measurement range setting.
Further, as shown in FIG. 4, a recording system in which the charging mode of C is selected (including the selection of the number of target batteries C ′) may be used.

A charging condition in which a plurality of the condition parameters 5 corresponding to one set parameter 3 determined in this way are determined is determined, which is again registered in the charging information storage means, and charged by the charger control means. It is sent out as a control signal to control the charging operation. The determination of the charging condition is performed by inputting a setting data transfer command from the input unit after determining all the condition parameters, so that the charging condition is registered in the charging information storage unit.

[0020]

Next, as a specific embodiment, an example of a charging apparatus capable of realizing the above-described charging control method will be described. FIG. 5 is a block diagram of a charging device for embodying the charging control method of the present invention. The example in the figure is AC
/ DC switching regulator 10
And an interface board (hereinafter referred to as I / F) for controlling the charger.
A charging device 16 comprising an operation / display control board 14 connected to a liquid crystal display or a keyboard (not shown) for inputting a setting command for a parameter to the I / F board 12 in an interactive manner. It is.
The I / F board 12 is supplied with power from a power port 12a, and the operation / display board 14 is supplied with power from a power port 14a. Here, in the I / F board 12, a CPU 18 for performing main control of the charging operation, a charging information storage unit 20 storing various parameters for the charging operation, and a parameter corresponding to the parameters of the charging information storage unit 20 are stored. The charging control signal is sent to the charger, and the current controller controls the constant voltage based on the current, voltage, and temperature information from the storage battery 24, and a constant voltage controller 22b that controls the constant voltage. Charger control means 22 is provided, and in the operation / display control board 14, display means for displaying each parameter stored in the charge information storage means 20 and an execution command corresponding thereto, and display on the display means Input means for selecting an execution command or inputting the content of the execution command as a set value is provided. The ON / OFF control of the charger 10 is performed by giving a signal from the charger controller 22a as a remote output to the phototransistor 28, and controlling the ON / OFF of the remote signal 26 from the phototransistor 28. The constant voltage setting change signal 3 for the two-stage constant voltage / constant current charging is sent from the charger controller 22a to the charger 10.
0 and the constant current setting change signal 32 are given as ON / OFF signals of the transistors 34 and 36, respectively. Further, the remote ON / OFF control for the charger 10 is performed to control charging start, charging completion, abnormal stop, and the like.
A signal 26 is provided. In addition, constant voltage controller 22
b outputs a digital signal (constant voltage control signal 38) to the charger 10 based on the result of the CPU 18 calculating the output such as the temperature of the storage battery 24 after the A / D conversion. It is. The digital signal undergoes D / A conversion on the charger 10 side, and the output voltage of the charger 10 is controlled to an output according to a command of the CPU 18.

The charger 10 receives a three-phase AC 40 as an input and obtains a DC output by a switching method. The output is connected to a storage battery 24 to be charged, and a shunt is provided between the charger 10 and the storage battery 24. Current detector 42 by resistance
And a voltage detector 44 comprising a voltage detecting resistor 44a and a voltage dividing resistor 44b, and a voltage output from the voltage detector 44 is supplied to an interface circuit (hereinafter, referred to as an I / F circuit) 46 in the I / F board 12. Has been entered. This voltage detector 44 divides the voltage between the storage battery terminals into a level that is easy to handle and takes it out, for a voltmeter indicating the charging voltage, for detecting whether the storage battery voltage is normal or not, for a two-stage constant current constant. It is used for detecting a switching point voltage for voltage charging to a two-stage constant current. The current detector 42 is used for an ammeter indicating a charging current and for detecting a switching point current of a two-stage constant current / constant voltage charging to a two-stage constant current. Also, the storage battery 24
Thermistor 48 for detecting the temperature of the storage battery 24
Is attached, and the I / F circuit 4
6 has been entered. This is used, for example, to match the charging voltage to the temperature characteristics of the storage battery 24 with respect to a change in the ambient temperature that fluctuates depending on the season. I / F circuit 46
And a voltage reference circuit 50 is provided.
It functions as a comparison voltage for two voltage inputs.
These three voltage inputs are taken out one by one at a sampling frequency arbitrarily determined by the sensor switching circuit 52, input to the A / D converter 54, converted into digital data, and then sent to the CPU 18. From the charger 10, a voltage abnormality signal 58 using the breakdown voltage of the Zener diode 56 based on a voltage abnormality such as an overvoltage due to an abnormality on the charger side is generated based on a fan abnormality or the like of the charger.
Charger temperature abnormal signal 6 via phototransistor 60
2 is a transistor 68 in which a power failure signal 64 when the rectified output of the AC voltage is insufficient for a charger input requiring a rectified output, and an open-phase signal 66 for protecting the charger from overloading.
Through 72, and the operating sensor identification signal from the sensor switching circuit 52, and the A / D converter 54 outputs
A digital output obtained by A / D conversion of an output from the / F circuit 46 and a time-up signal of a charging time from a timer controller 74 are input to an interrupt controller (hereinafter referred to as INT control) 76, respectively.
Other interrupt processing such as the stop of the charger 10 and the correction of the voltage can be performed on the calculation execution flow of the CPU 18. Here, the power failure signal 64 and the phase loss signal 66 are simultaneously input to the charger controller 22a.
84a and 84b are a data output port and a data input port for the I / F board 12, respectively.
4d is a timing adjustment buffer.

The display means and the input means of the charging device 16 are, for example, as shown in FIG.
It is integrated as an operation panel 82 in which the operation key 8 and the operation keys 80 are incorporated, and is incorporated in a proper position in the upper part of the charging device housing. When the contents of the setting parameters 3 and the options themselves of the condition parameters 5 are to be changed, the data input port 8 can be changed from a separate personal computer or the like via the RS232C or the like.
4b, the contents of the charging information storage means 20 can be directly rewritten.

FIG. 7 shows a display example of the liquid crystal display 78 during the operation of the two-stage constant voltage / constant current charging.
A display portion 78 in which the temperature during charging of the storage battery 24 is displayed on the temperature display portion 78a, the charging voltage is displayed on the voltage display portion 78b, and the charging current is displayed on the current display portion 78c as 2ND (V).
In the display portion 78e in which d is a constant voltage set value of the second stage and 1ST (V), a constant voltage set value of the first stage is 1
The first-stage constant current set value is displayed on the display portion 78f marked ND (A), and the second-stage constant current set value is displayed on the display portion 78g marked 2ND (A) with CNG. The current set value at the conversion point from the first-stage constant-voltage region to the second-stage constant-current region is displayed in a display portion 78h described therein, and a display portion 78i described in TM1 until the end of charging is displayed in a display portion 78i described. In the display portion 78j in which the total time set value is described as TM2, the time from the start of the constant current region of the second stage to the end of the charge is:
The elapsed time of each timer from the start is displayed on a display portion 78k indicating progress, and the remaining time until the end of the timer is displayed on a display portion 78m indicated as remaining. A graph 78n at the substantially center of the display screen represents a charging profile based on the set condition parameter 5, and it is a two-stage constant-voltage / constant-current charging profile without need to explain again. The line below is the current line. Here, by displaying the actual values of the time change of the actual voltage and current values along with the elapsed time, by changing the color of the line, it is possible to see what history of actual charging traces with respect to the ideal profile. At a glance, it is an excellent charge monitor.

During operation of the charging device 16,
For example, the following message is displayed on the liquid crystal display 78 according to the operation stage. (1) Charge State Display (Initial Screen) The screen shown in FIG. 6 is displayed, the numerical values of the registered condition parameters are displayed at predetermined locations, and the state before operation is confirmed. (2) Display of total timer time-up For example, in one-stage constant-voltage / constant-current charging, when the set time of the total timer elapses, “charging completed” is displayed to notify the end of charging. (3) Second-stage timer time-up When the set time of the second-stage timer (TM2) of the two-stage constant-voltage / constant-current charging as shown in FIG. 6 has elapsed, “charging completed” is displayed to notify the end of charging. . (4) Interruption of charging When an interruption of charging is input from a command key on the operation panel during charging, "interruption of charging" is displayed. (5) Voltage abnormality warning The Zener diode 56 shown in FIG.
When a voltage abnormality is detected on the side, "Charger abnormality-abnormality detected by charger / overvoltage or undervoltage protection activated" is displayed, and the charging operation automatically stops. Such a stop command is issued by the INT control 76.
Is performed by the interrupt processing. (6) Voltage abnormality warning When a voltage abnormality on the I / F board 12 side is detected, "Charger abnormality-abnormality detected by controller / overvoltage or undervoltage protection activated" is displayed.
The charging operation stops automatically. This stop command is also INT
This is performed by the interrupt processing of the control 76. (7) Converter temperature abnormality warning When a temperature abnormality inside the AC / DC converter of the charger 10 is detected, "Charger abnormality-temperature abnormality of the built-in converter has occurred" is displayed, and the charging operation is automatically performed. Stop. This stop command is also transmitted to the INT control 76.
Is performed by the interrupt processing. (8) Open-phase detection warning When the open-phase of the commercial (three-phase) AC input 40 to the charger 10 is detected, "the charger has stopped due to an abnormal charger-phase loss accident" is displayed. , The charging operation stops.
This stop instruction is also performed by the interrupt processing of the INT control 76. (9) Battery temperature abnormality warning When it is detected that the temperature of the storage battery 24 has become an abnormal value, "battery temperature abnormality-charging battery temperature abnormality has occurred" is displayed, and the charging operation is automatically stopped. I do.
This stop instruction is also performed by the interrupt processing of the INT control 76. (10) Full charge warning When the connected storage battery 24 is already fully charged, "full charge" is displayed and the charging operation is stopped. This is obtained by full charge detection performed based on the automatic sequence F set as the condition parameter 5, and is detected by an input value from the current detector 42. In addition,
An example of the automatic sequence F will be described later. (11) Battery abnormality When normal charging is not performed due to a failure of the connected storage battery 24 or the like, "battery abnormality" is displayed and the charging operation is stopped. This operates when the value of the normal charging initial current (E- (5)) of the protection parameter E set as the condition parameter 5 does not exceed.

Next, as an example of the automatic sequence F, an example of the portable EV charger sequence (F- (3)) among the above-described condition parameters 5 will be described. The following sequence proceeds in numerical order. (1) AC power supply The AC input power is supplied to the three-phase rectifier box in the charger 10. (2) Power reception confirmation It is confirmed whether the DC output from the three-phase rectification box has an appropriate value. If this is out of the normal range, normal charging cannot be performed. (3) Confirmation of connection of output side connector It is confirmed whether or not the connection from the charger 10 to the storage battery 24 has been completed. If there is no problem, a connection confirmation signal is transmitted, and the process proceeds to the next step. (4) Charge Standby Detection Since the initial environment has been set up as described above, a charge standby detection signal is transmitted at this time, the power receiving LED 82a on the operation panel 82 is turned on, and the standby LED 82b blinks (see FIG. 5). ). (5) Battery status confirmation Monitor the storage battery voltage. Specifically, the value is compared with the set value of “normal battery voltage range” (E- (3)) in the protection setting parameter E among the condition parameters 3 described above. (6) Battery status check The storage battery temperature is monitored. Specifically, the value is compared with the set value of “normal battery temperature range” (E- (4)) in the protection setting parameter E among the condition parameters 3 described above. (7) Battery status check (normal) If the storage battery status is normal, the standby LED 8
2b is turned on, and a charge standby signal is output from the output port 84a of the I / F board 12. (8) Battery status check (in case of abnormality) If there is any abnormality in the state of the storage battery, a “charger abnormality” is displayed on the liquid crystal display 78 and an abnormality LED is displayed.
82c is turned on (see FIG. 5), an abnormal signal is output from the output port 84a of the I / F board 12, and an alarm means such as a buzzer provided in the housing of the charging device 16 sounds. This is the preparation stage before operation.

(9) Operation When the operation key 80a of the operation panel 82 is pressed, the operation state is set. Specifically, the phototransistor 28 is controlled by a remote ON / OFF output from the charger control unit 22.
Is turned on (see FIG. 4), and the charger 10 is started. At the same time, the total timer D- (6) set as the parameter item D starts, and the countdown operation starts. Also,
The standby LED 82b is turned off, the first-stage charging LED 82d is turned on (see FIG. 5), the charging standby signal is stopped, and a signal during operation and charging is output from the output port 84a of the I / F board 12, and the liquid crystal is displayed. The content is displayed on the display 78 as shown in FIG. When shifting to the second-stage charging, the second-stage charging LED 82e is turned on. (10) Confirmation of normal charging initial current The initial monitoring of the charging current is performed to determine whether the state of the storage battery is normal. Specifically, it is confirmed whether or not a current equal to or more than the set value of the normal charging initial current E- (5) of the protection parameter E in the condition parameter 5 flows for 2 seconds or more. (11) Full charge detection During the set value of the initial full charge detection time E- (6) of the protection parameter E in the condition parameter 5, the charging current flows over the normal charging initial current E- (5) of the protection parameter E, and thereafter When the current drops below the normal charging initial current E- (5), it is determined that the storage battery 24 is full. This is because when the storage battery 24 is fully charged, the initial current flows only for a short time,
After that, the current decreases. Then, even if the initial full charge detection time (E- (6)) or more has elapsed, if the normal charge initial current is equal to or more than the set value (E- (5)), charging is continued. (12) Switching point current detection The switching point current (for example, the above-mentioned D- (5) and the current value displayed as CNG in FIG. 6) and the current value set by the parameter item D of the condition parameter 5 When it is confirmed that the current value is equal to or less than the switching point, the second-stage timer (the time indicated as TM2 in FIG. 6) is started. At the same time, the LED 82d is turned off during the first-stage charging (see FIG. 5). (13) Completion of charge (total timer) Check the time up of the total timer (TM1),
A charge completion is displayed on the liquid crystal display 78,
Turn off the second-stage charging LED 82e and complete charging LED 82
f is turned on (see FIG. 5), and the phototransistor 28
Is turned off (see FIG. 4), and the charger 10 is stopped.
The output from the output port 84a of the I / F board 12 during operation and during charging stops, the display disappears, a signal indicating that charging is completed is output as an external output, and the completion of charging is displayed on the liquid crystal display 78. Is displayed. At the same time, the second-stage timer (TM2) is stopped, and all operations are reset. (14) Completion of charging (second-stage timer) Confirming the time-up of the second-stage timer (TM2), displaying the completion of charging on the liquid crystal display 78, and
Turn off the stage charge LED 82e and charge complete LED 82f
Is turned on (see FIG. 5), the phototransistor 28 is turned off by the remote ON / OFF output from the charger control means 22 (see FIG. 4), and the charger 10 is stopped. The output from the output port 84a of the I / F board 12 during operation and during charging stops, the display disappears, a signal indicating that charging is completed is output as an external output, and the completion of charging is displayed on the liquid crystal display 78. Is displayed. At the same time, the total timer (TM1) is stopped, and all operations are reset. Therefore, when either the total timer or the second-stage timer times out first, the charging is completed. The above is the flow from charging start to completion.

(15) Return from Completion of Charging After one charging operation is completed, when recharging is performed under the same conditions, the stop key 80b is pressed (see FIG. 5), and the liquid crystal display 78 shown in FIG. The monitoring screen is displayed. Thereafter, the storage battery 24 to be charged is replaced, and charging is performed in the same procedure as the first time.

In addition, for the case where the above-mentioned various abnormal signals are output, various abnormal occurrence sequences such as resetting or holding of the timers TM1 and TM2 and stopping of the operation output are separately set. Next, as the expected sequence contents, when the output connector of the charger is disconnected,
Recovery from disconnection of output connector, same as when battery voltage abnormality (when confirming startup) occurs, same as when battery voltage abnormality (when charging is executed), abnormality in battery temperature (when confirming startup) Recovery when battery failure occurs, same recovery when storage battery temperature abnormality (when charging is performed), same recovery when charger temperature abnormality occurs, same recovery when open phase abnormality occurs, full charge For example, the recovery may be the same as when the battery has occurred, and the recovery may be the same as the case where a battery failure has occurred.

[0029]

As described above, the charging control method of the present invention
Various charging conditions can be easily set without rewriting a complicated sequence as in the related art. As a result, the charging conditions for various different storage batteries can be quickly set as needed on the spot by one charger, so that it is possible to cope with recent diversification of storage batteries. This requires setting parameters for charging conditions, such as setting the ammeter measurement range, setting the voltmeter measurement range, setting the battery temperature coefficient, setting the constant current value, setting the constant voltage value, and so on. Categorized for each function, and the condition parameters that are the contents to be set of the respective setting parameters are stored in a corresponding state, and in the setting operation of the charging condition, one setting step is followed. This is a remarkable effect obtained by repeatedly inputting the condition parameter data corresponding to the setting parameters sequentially and determining a combination of each condition parameter associated with the setting data as the charging condition.

That is, the conventional idea is that a required number of charging conditions assumed by a computer are stored in a data file, and one suitable profile data is selected from the data file during the charging operation. Yes, even if a lot of charging condition data is stored in one charging device, selecting one data from a huge number of data itself is beyond human ability and can not be realized at all It was. However, in the present invention, as described above, the storage mode of each parameter of the charging condition is devised, and the setting of the charging condition is performed by setting C
The function of the PU constructs one charging condition by combining individual parameters selected in order in the charging information storage means, so that it is possible to achieve both wide versatility and excellent workability, which could not be considered conventionally. . Furthermore, this C
As already described by the PU, the charging condition is corrected while reading data such as the charging voltage, charging current, and the temperature of the storage battery during the charging operation in real time, and charging is performed under a correction condition equivalent to the determined charging condition. Since the operation can be performed, charging with extremely high accuracy can be performed. And the charging device obtained by the Example of this invention also has the above-mentioned excellent effect.

[Brief description of the drawings]

FIG. 1 is a block diagram showing setting parameters stored in charging information storage means and storage states of condition parameters.

FIG. 2 is a block diagram showing setting parameters stored in charging information storage means and storage states of condition parameters.

FIG. 3 is a block diagram showing a storage state of a setting parameter stored in a charging information storage unit and a condition parameter in an embodiment.

FIG. 4 is a block diagram showing a storage state of a setting parameter stored in a charging information storage unit and a condition parameter in the embodiment.

FIG. 5 is a block diagram illustrating a configuration of a charging device using the present invention.

FIG. 6 is an explanatory diagram showing an example of display means and input means of the charging device.

FIG. 7 is an explanatory diagram illustrating a display example during operation of two-stage constant voltage / constant current charging.

FIG. 8 is a block diagram illustrating a configuration of a conventional charging device.

[Explanation of symbols]

1 List of setting parameter data 54 A / D converter 3 Setting parameter 56 Zener diode 5 Condition parameter 58 Voltage abnormal signal 10 Charger 60 Phototransistor 12 I / F board 62 Charger temperature abnormal signal 12a, 14a Power port 64 Power failure signal 14 Operation / display control board 66 Open-phase signal 16 Charging device 68-72
Transistor 18 CPU 74 Timer controller 20 Charging information storage means 76 INT
Control 22 Charger control means 78 Liquid crystal display 22a Charger controller 78a-n
Display part 22b Constant voltage controller 80 Operation key 24 Battery 80a Operation key 26 Remote signal 80b Stop key 28 Phototransistor 82 Operation panel 30 Constant voltage setting change signal 82a to 82
f LED 32 Constant current setting change signal 84a Data output port 34, 36 Transistor 84b Data input port 38 Constant voltage control signal 84c, 84
d buffer 40 three-phase AC input 100 sequencer 42 current detector 42, 102 interface board 44 voltage detector 104 charger 44 a voltage detection resistor 106 storage battery 44 b voltage divider 108 voltmeter 46 I / F circuit 110 current divider 48 thermistor 112 Ammeter 50 Voltage reference circuit 114 Correction circuit 52 Sensor switching circuit 116 Thermistor

Claims (2)

(57) [Claims] A plurality of setting parameters which need to be set for a charging operation are distinguished for each stage of a charging condition setting operation and correspond to condition parameters which are contents to be set for each setting parameter. The condition parameter corresponding to one setting parameter in the charging information storage means is displayed step by step on the display means in accordance with the setting parameter setting procedure while the input means is stored in the charging information storage means. Inputting the selection data or the setting data corresponding to the condition parameter of the display content through
It repeats for all the setting parameters in order, and registers a plurality of combinations of the input selection data or one condition parameter associated with the setting data as charging conditions in the charging information storage means. Sending a charge control signal based on the condition parameter content of the charge condition from the charger control means to the charger,
During charging, at least the charging voltage and the charging current and the temperature data of the storage battery being charged are read as electric signals and fed back to the charger control means, so that a charging operation equivalent to the charging condition registered in the charging information storage means is performed. A charge control method that corrects and controls the operation of a charger so that At least a plurality of setting parameters required to be set for a charging operation are distinguished for each stage of a charging condition setting operation, and a condition parameter which is a content to be set for each setting parameter is defined. Charging information storage means for storing in a corresponding state; display of a condition parameter corresponding to one setting parameter in the charging information storage means in a stepwise manner according to a setting parameter setting procedure; A display input unit for inputting selection data or setting data; and a plurality of combinations of one condition parameter registered as charging conditions in the charging information storage unit and associated with the selection data or setting data. While sending a charge control signal based on the charge condition to the charger,
During charging, at least the charging voltage and the charging current and the temperature data of the storage battery being charged are read as electric signals,
Charger control means for correcting and controlling the operation of the charger so that the charging operation is equivalent to the charging condition registered in the charging information storage means. Charge control device configured to serially perform a plurality of types of charging under different charging conditions.