JPH07123599A - Charge controller - Google Patents

Abstract

PURPOSE:To ensure safety by delivering an alarm if an abnormality is detected upon start of charging operation of a battery and interrupting the charging operation if an abnormality is detected during the charging operation. CONSTITUTION:A timer switch 88 sets a charge starting time for a battery 20 or a time lag thereof and a timer 90d in a charger controller 90 begins measurement of time such that the charging operation for the battery 20 is started at the set time. If an abnormality of the system is detected at a moment of time when the timer 90d designates the start of time measurement, a controller 40 delivers a predetermined alarm. If an abnormality is detected during the charging operation of the battery 20, the battery 20 is not charged by the charging system. This constitution ensures safety of the charging system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging control device,
More specifically, the present invention relates to a charging control device including a charging system that is connected to a predetermined power source and charges a storage battery.

[0002]

2. Description of the Related Art Conventionally, as a charging control device of this type,
A charging control device has been proposed in which a charger is connected to a storage battery, a charging start time or a delay time until the charging start time is set, and charging is started at the set time. In this device, normally, when setting the charging start time or the delay time until charging start, only the time is set,
The charging current does not flow until the charging start time.

[0003]

A charging control device capable of setting such a charging start time, when charging a battery of an electric vehicle requires a considerable amount of electric power for charging,
Although it has an advantage that the storage battery can be charged using low-charge late-night power, the following problems have been pointed out. In order to ensure safety, the charging control device usually incorporates a safety device that does not perform charging when an abnormality of the charging system is detected (for example, see Japanese Utility Model Laid-Open No. 61-174844). Therefore, even if the charging is started at the set time, if the abnormality of the charging system is detected at that time, the charging is not performed. Of course, even if the user forgets the electrical connection and the necessary settings, the charging is not performed.

Such a state in which the charging system cannot charge is notified in some form during charging, but when the charging start time is set and charging is started, the user may not be near the charging device. This is a premise, and it is difficult to take appropriate measures by knowing the occurrence of such a situation. For example, when using late-night power, you will know that charging could not be done the next morning, and if charging takes a considerable amount of time, it will be impossible to use the storage battery and thus the device using the storage battery. Become. It can be said that the fact that the device cannot be used at all due to a slight setting error by the user cannot be overlooked in terms of usability. It should be noted that such a problem is not limited to the charging system that uses the midnight power, and is the same with a control device that starts charging after a lapse of a predetermined time or a charge control device that starts charging from a predetermined time.

The charge control device of the present invention has been made for the purpose of solving such problems and being able to reliably charge at the charge start time, and has the following configuration.

[0006]

The charging control device of the present invention is a charging control device provided with a charging system which is connected to a predetermined power source to charge a storage battery, and which is a charging start time or a delay until charging start. Time setting means for setting a time, at the set time, a time counting start means for starting time counting to start charging of the storage battery by the charging system, and an abnormality detection means for detecting an abnormality of the charging system, At the point of time when the start of the timekeeping is instructed by the timekeeping start means, the abnormality detection means is operated, and when an abnormality is detected, the timekeeping start warning means for outputting a predetermined warning output, and the charging system And a charging non-execution unit that does not charge the storage battery by the charging system when an abnormality is detected by the abnormality detection unit during charging. To.

[0007]

In the charge control device of the present invention configured as described above, the time setting means sets the charging start time or the delay time until the start of charging, and the clocking start means sets the time at the set time. Start timing to start charging the storage battery with the charging system. The timing start warning means operates the abnormality detection means for detecting an abnormality of the charging system at the time when the timing start means instructs the timing start, and outputs a predetermined warning output when the abnormality is detected. To do. On the other hand, the charging non-execution means does not charge the storage battery by the charging system when an abnormality is detected by the abnormality detection means during charging by the charging system. As a result,
While ensuring the safety of the charging system, it is possible to take appropriate measures against an abnormality in the charging system, a connection error, etc., at the time when the start of the timekeeping is instructed.

Here, the abnormality detecting means is used to detect the state of the storage battery,
If the charging control device detects an abnormal state of the state of the charging system, the state of connection between the storage battery and the charging system, and the state of connection between the charging system and a predetermined power source, it is easy to identify the abnormal point and simplify the treatment. . Further, if the abnormality detection means is a charging control device that detects an abnormality by forming a closed circuit formed during charging in the charging system and the storage battery,
Enables detection of abnormalities that occur during charging.

[0009]

Preferred embodiments of the present invention will be described below in order to further clarify the structure and operation of the present invention described above. FIG. 1 is a block diagram illustrating an outline of a charge control device 10 that is an embodiment of the present invention. The charge control device 10 includes a battery 20 that is mounted on a vehicle and can be charged and discharged,
Similarly, the charging control device 30 is mounted on the vehicle and controls charging of the battery 20, and a charger 70 that is connected to the charging control device 30 and supplies electric power for charging the battery 20.

The charging control device 30 includes a charging conductive line 31 for flowing the charging current from the charger 70 to the battery 20,
A control device 40 that controls charging of the battery 20 based on communication with the charger 70, a display device 46 that displays an abnormality of the charging control device 10 and a charging state of the battery 20, and a charger side of the charger 70 described later. The vehicle-side connector 50 is provided for connection with the connector 100.

The charging conductive line 31 is connected to the electrode of the battery 20, and the charging conductive line 31 includes a fuse 34 for preventing an overcurrent from flowing to the battery 20 and a charging conductive line 31. A relay contact 36x that controls connection / disconnection, an ammeter 38 that detects a charging current value flowing through the charging conductive line 31, and a voltmeter 39 that detects a charging voltage value are provided. The charge control device 30 is also provided with a temperature sensor 32 that detects the temperature inside the battery 20. The measuring device and the relay 36 are connected to the control device 40.

The relay 36 receives the drive signal from the control device 40, connects or disconnects the conductive line 31 for charging, and stores the state in a state storage means (not shown) (for example, RAM) provided in the relay 36. Remember. Further, the relay 36 outputs this stored state to the control device 40.

The control device 40 is configured as a logic circuit centering on a microcomputer, and more specifically, it is necessary for the CPU 40a, which executes predetermined arithmetic operations according to a preset control program, to execute various arithmetic processing. From a ROM 40b in which various control programs and control data are stored in advance, a RAM 40c in which various data necessary for executing various arithmetic processes in the CPU 40a are temporarily read and written, a temperature sensor 32, an ammeter 38 and a voltmeter 39. Input signal processing circuit 40d for inputting a detection signal of the signal, a signal indicating the state of the relay 36, and a control signal from the charger 70 input via the bus 42, and the CPU 4
The drive signal is output to the relay 36 and the display device 46 in accordance with the calculation result at 0a, and the charger 70 is supplied via the bus 44.
And an output processing circuit 40e for outputting a control signal.

The vehicle-side connector 50 has a connection state detecting mechanism 51 which outputs a low level (low) as an electric signal to the input processing circuit 40d when the charger-side connector 100 of the charger 70 described later is connected. I have it.

On the other hand, the charger 70 includes a charging conductive line 71 for supplying a charging current to the charging control device 30, a rectifying circuit 72 for rectifying commercial alternating current, and a constant current circuit 74 for supplying a constant current of a predetermined value. , A timer switch 88 for setting a delay time until the start of charging, a start switch 89 for starting charging or timing of a time set by the timer switch 88, and a charger control device for controlling each device of the charger 70. 90, a display device 96 for displaying an abnormality or a charging state of the charger 70, and a plug 9 for connection with a commercial AC power supply
8 and a charger-side connector 100 that connects to the vehicle-side connector 50 of the charging control device 30.

The charging conductive line 71 has a relay contact 76x for connecting / disconnecting the charging conductive line 71, an ammeter 78 for detecting a charging current value flowing through the charging conductive line 71, and a charging voltage value. A voltmeter 79 for detecting and a leak sensor 84 for detecting a leak from the charging conductive line 71 are provided. The charger 70 also includes a temperature sensor 82 that detects the temperature inside the charger 70, and a fan 86 that cools the temperature inside the charger 70. The fan 86 includes a drive detection sensor 86a for detecting the drive of the fan 86.
Is provided. Measuring devices in these chargers 70,
The relay 76, the fan 86, the drive detection sensor 86a, the timer switch 88, and the start switch 89 are connected to the charger control device 90.

The charger control device 90 is constructed as an arithmetic logic operation circuit centered on the CPU 90a.
A CPU 90a that executes a predetermined calculation and the like according to a preset control program, a ROM 90b in which a control program and control data necessary for the CPU 90a to execute various calculation processes are stored in advance, and the CPU 90a also executes various calculation processes. RAM 90c, ammeter 78, voltmeter 79, in which various data required for
An input processing circuit 90d for inputting detection signals from the temperature sensor 82, the leakage sensor 84 and the drive detection sensor 86a, a signal indicating the state of the relay 76, and a control signal output from the output processing circuit 40e of the control device 40, and a CPU 90.
The constant current circuit 74, the relay 76,
An output processing circuit 90e that outputs a drive signal to the fan 86 and the display device 96 and outputs a control signal that is input to the input processing circuit 40d of the control device 40, and a timer switch 88.
There is provided a timer 90t for counting the delay time set by the time from when the start switch 89 is pressed.

The charger side connector 100 is provided with a conductive line 101 for connecting the two conductive lines of the connection state detecting mechanism 51 of the vehicle side connector 50 to earth. When the connection state detecting mechanism 51 is grounded, the signal output from the connection state detecting mechanism 51 to the control device 40 becomes low level. By inputting this signal from the input processing circuit 40d, the control device 40 recognizes that the charger-side connector 100 has been connected to the vehicle-side connector 50.

Next, the buses 42, 92 and 44 are provided.
The electrical connection centered on the part related to communication between the charging control device 30 and the charger 70 and the part related to the power source, which is performed via the bus 94 and the bus 94 will be described. Figure 2
It is a circuit diagram which illustrated the connection state of the charge control device 30 and the charger 70. As illustrated, the line IGCH1 is connected to an auxiliary battery (not shown) and supplies power to the charging control device 30. The line IGCH3 is a charger 70
Is connected to the 12V power source, and power is supplied to the charging control device 30 by turning on the switch SW1.
The line IGCH1 and the line IGCH3 are connected via the relay R1. Therefore, the charge control device 30
Can be supplied with power from the auxiliary battery by turning off the relay R1, and can be supplied with power from the charger 70 by turning on the relay R1 when the auxiliary battery is completely discharged.

A conductive line 92a forming a part of the bus 92,
92b is connected to the conductive lines 42a and 42b forming a part of the bus 42 via the communication lines IGCH2 and CHG4. The charger 70 communicatively outputs a control signal or the like to the charging control device 30 using the communication lines IGCH2 and CHG4. In addition, conductive lines 44a forming a part of the bus 44,
44b is connected to the conductive lines 94a and 94b forming a part of the bus 94 via the communication lines CHGV2 and CHG3. Using these communication lines CHGV2 and CHG3, the charging control device 30 communicates and outputs a control signal and the like to the charger 70. The electric circuit to each communication line is configured as an open collector circuit on the output side and as a photocoupler by optical isolation on the input side.

The charging control device 10 thus constructed is
The battery 20 is charged based on the charging control program executed by the controller 40 of the charging controller 30 and the charger program executed by the charger controller 90 of the charger 70. This process is illustrated in FIG. FIG. 3 shows the relationship between the charge control program and the charger program from the start of charging to the end of charging. The operation of the charging control device 10 will be described below with reference to FIG. The charger side connector 100 is connected to the vehicle side connector 50 of the charging control device 30 in the stopped state (step S200).
Is connected (step S210), and the charger 70 (not shown) is connected.
When the main power switch is pressed (step S220), the delay time is set by the timer switch 88, and the start switch 89 is pressed, the charger control device 90
Switches the communication line IGCH2 to the low level and switches SW when the auxiliary battery is completely discharged.
1 is turned on and the 12V power source of the charger 70 is connected to the line IGCH3 (step S230).

When the communication line IGCH2 becomes low level, the control device 40 turns on the power source of the charging system and outputs a drive signal for turning on the relay 36 via the output processing circuit 40e (step S240). The relay 36 receives the drive signal and closes the conductive line 31 for charging.

Then, control device 40 executes the check routine shown in FIG. 4 to check whether charge control device 10 is normal (step S250). Hereinafter, the check of the charging control device 10 will be described based on the check routine. When the check routine is executed, the control device 40 first reads the signal from the connection state detection mechanism 51 (step S500), and determines whether the value is low level (step S510). If the charger side connector 100 is connected to the vehicle side connector 50, the connection state detection mechanism 51 is grounded,
It becomes low level. Therefore, the connection state detection mechanism 51
When the signal from is at a high level, it is determined that the connection is abnormal, and the value 1 is assigned to the connector connection determination flag FCNCT (step S515), and the system abnormality determination flag FSY.
The value 1 is substituted for S (step S640), and this routine is finished. Here, the connector connection determination flag FCNC
T, the system abnormality determination flag FSYS, and all flags to be described later are set to 0 as initial values by an initialization routine (not shown) when the power supply of the charging control device 30 is turned on.

When the signal from the connection state detecting mechanism 51 is at a low level, it is judged that there is no connection abnormality, and the charger 70
The voltage V2 detected by the voltmeter 79 is read (step S520). This reading is performed as follows. The control device 40 sends a control signal for reading the voltage V2 from the output processing circuit 40e to the bus 44 and the bus 94.
To the charger control device 90 via. The charger control device 90 to which this control signal is input reads the voltage V2 detected by the voltmeter 79 via the input processing circuit 90d.
Then, the read voltage V2 is output from the output processing circuit 90e to the control device 40 via the bus 92 and the bus 42. The control device 40 reads the voltage V2 via the input processing circuit 40d.

When the voltage V2 is read, it is determined whether the voltage V2 has a value 0 (step S530).
When it is determined that the plug 98, the rectifier circuit 72, or the constant current circuit 74 is abnormal, the value 1 is substituted into the power supply abnormality determination flag FACP and the system abnormality determination flag FSYS (steps S535 and S640), and this routine ends. To do.

When the voltage V2 is not 0, it is determined that the plug 98, the rectifier circuit 72 and the constant current circuit 74 are normal, and the voltage V1 detected by the voltmeter 39 is read via the input processing circuit 40d. (Step S540).
It is determined whether the read voltage V1 has a value of 0 (step S550). When the value is 0, it is determined that the battery 20 is completely discharged or that the fuse 34 or the relay 36 has an abnormality, and an abnormality determination flag for the relay or the like. The value 1 is substituted into FRH1 (step S555). Since the relay 36 is turned on before the voltage V2 is read by this routine (step S240), the voltage V2 does not show the value 0 unless the battery 20 is completely discharged.

Next, the control unit 40 controls the charger control unit 9
A control signal for turning on the relay 76 is output to 0 (step S560). Charger control device 90 receiving this signal
Outputs a control signal for turning on the relay 76 to the output processing circuit 9
Output from 0e to close the charging conductive line 71.
As a result, the charger 70 starts charging the battery 20 with the charging current value set before ending the previous charging.
The charging current value in this case may be any value. It is also preferable that the constant current circuit 74 be operated so that a predetermined current value for detection is obtained when the power source of the charger 70 is turned on.

When the relay 76 is turned on, the control device 4
The value 0 reads the current I1 and the voltage V1 detected by the ammeter 38 and the voltmeter 39 through the input processing circuit 40d (step S570). Based on the read current I1 and voltage V1, it is determined whether or not charging by the charger 70 is possible (step S580), and if it is determined that charging is not possible, a control signal for turning off the relay 76 is sent to the charger control device 90. (Step S582), the value 1 is assigned to the charging abnormality determination flag FRH2 and the system abnormality determination flag FSYS (steps S584 and S640), and this routine is ended.

Charging abnormality determination flag FR determined here
It is possible to make the following determination based on H2 and the value of the abnormality determination flag FRH1 such as the relay. Relay judgment flag FR
When H1 is the value 1 and the charging abnormality determination flag FRH2 is the value 0, it is determined that the battery 20 is completely discharged, and it can be determined that the charging control device 10 has no abnormality. When the relay etc. abnormality determination flag FRH1 has a value 0 and the charging abnormality determination flag FRH2 has a value 1, it can be determined that the relay 76 has an abnormality.
When the relay abnormality determination flag FRH1 has a value of 1 and the charging abnormality determination flag FRH2 has a value of 1, it can be determined that the fuse 34, the relay 36, or the relay 76 has an abnormality.

When it is determined in step S580 that charging by the charger 70 is possible, the control device 40 reads the detection value of the leakage sensor 84 via the charger control device 90 (step S590), and detects the leakage from the detection value. If it is determined (step S570) and it is determined that there is a leakage, a control signal for turning off the relay 76 is output to the charger control device 90 (step S602), and the leakage detection flag FERR and the system abnormality determination flag FSYS are output. The value 1 is substituted (steps S604 and S640), and this routine ends.

When the control device 40 determines that there is no electric leakage, it outputs a control signal for turning off the relay 76 to the charger control device 90 (step S610), and connects it to the fan 86 via the charger control device 90. Drive detection sensor 8
The detected value of 6a is read (step S580). The driving state of the fan 86 is judged from the read detection value (step S590), and when the fan 86 is driven, this routine is finished as it is, and when the fan 86 is not driven,
It is determined that the fan 86 has an abnormality, and the value 1 is assigned to the fan abnormality determination flag FFAN and the system abnormality determination flag FSYS (steps S635 and S640), and this routine is ended.

When the value 1 is assigned to the system abnormality determination flag FSYS by such a check routine, the controller 40 causes the charger 7 to operate according to the charging control program shown in FIG.
The charge prohibition is output by communication to 0 (step S260), the relay 36 is turned off, the power supply of the charging system is turned off, and the charge control device 10 is stopped (step S270). Further, the contents of the abnormality are displayed on the display device 46 and the communication output is performed so as to be displayed on the display device 96 of the charger 70 (step S).
280).

If no abnormality is detected by the check routine, the control device 40 determines that the charge control device 10 is in a chargeable state (charging standby state), and outputs a message to that effect through the communication line CHG3 (step S4). S2
90). The charger 70 receiving this communication is connected to the communication line IG.
CH2 goes high and line IGCH3 goes to 1
When it is connected to the 2V power source, it is cut off and the timer is started (step S300). Communication line I
When GCH2 becomes high level, control device 40 turns off relay 36, turns off the power supply of the charging system, and temporarily stops the operation of charging control device 10 (step S310).

When the delay time set by the timer switch 88 elapses, the charger control device 90 again sets the communication line IGCH2 to the low level and the line IGCH.
A 12V power supply is connected to 3 (step S320).

When the communication line IGCH2 becomes low level, the control device 40 activates the temporarily stopped system (step S330) and executes the check routine shown in FIG. 4 again. When an abnormality is detected by the check routine, the control device 40 communicates and outputs charging prohibition to the charger 70 (step S360) and stops the system (step S370). Display contents of abnormality 46, 9
No. 6 is displayed (step S380).

If no abnormality is detected by the check routine, the controller 40 sets the charging standby to the communication line CH.
Communication output is performed by G3 (step S390). Receiving this communication, the charger 70 outputs the information about the capability of the charger 70 such as the charging current value and the charging voltage value allowed by the charger 70 through the communication line CHG4 (step S).
400). Upon receiving the information of the charger 70, the control device 40 sets the maximum value of the charging current value and the charging voltage value instructing the charger 70 after the start of charging within the range of the capability of the charger 70, and the charger 70 The communication line CHGV2 is set to the low level as a signal for permitting charging by (step S41).
0). Receiving this communication, the charger control device 90 determines that the charger 70 is in a chargeable state (charging standby state), and outputs a communication to that effect from the communication circuit CHG4 (step S420). In this way, charging is started.

After the start of charging, the control device 40 controls the temperature sensor 32 and the ammeter 38, at predetermined time intervals (for example, every 1 second).
The value detected by the voltmeter 39, the state of the relay 36, and the like are read through the input processing circuit 40d, and the temperature of the battery 20, the fuse 34, the relay 36, the vehicle-side connector 50, and the charger-side connector 100 are read based on the values. Judge whether there is any abnormality in the connection with. In addition, a good charging current value or charging voltage value is set according to the state of the battery 20, the capacity of the charger 70, etc., which is determined by the detected value, and the value is instructed to the charger 70 via the communication line CHG3. (Step S450). Charger control device 90 of charger 70
Reads the detection value detected by the ammeter 78 or the voltmeter 79 at every predetermined time so that the charging current value or the charging voltage value is instructed by the control device 40, and based on the value, the constant current circuit 74 is read. To control. In addition, the charger control device 90 activates a charging check routine (not shown) every predetermined time (for example, every second), and the ammeter 78, the voltmeter 79, the temperature sensor 82, the leakage sensor 84, the drive detection sensor 86a, and the like. The detection value detected by the measuring device is read through the input processing circuit 90d, and the read detection value and drive state are output to the control device 40 through the communication line CHG4 (step S455). The control device 40 determines whether or not there is an abnormality in the charger 70 based on the detection value and the driving state read via the communication line CHG4.

As an example of charging control of the battery 20 by the charging control device 10, FIG. 5 shows a time change of the charging current value and the charging voltage value when the battery 20 is charged by the two-stage constant current charging method. The charging is performed by the initial charging current value I1 determined according to the state of the battery 20 and the capacity of the charger 70.
Started at. When charging progresses and the charging voltage V reaches the voltage V (T) determined based on the temperature of the battery 20 at time t1, the charging current value I is switched to the value I2. After that, when a predetermined time elapses and time t2 is reached, it is determined that the charging is finished, and the charging is finished.

The abnormality detected during charging is detected by the abnormality detection of the connection between the vehicle side connector 50 and the charger side connector 100 (steps S500 and S510) shown in the check routine of FIG. Detection of leakage fault (steps S560, S570), relay 76
Driving abnormality detection (steps S580 and S590), the battery temperature abnormality detection routine shown in FIG. 6 detects the battery 20 temperature abnormality, and the charger temperature abnormality detection routine shown in FIG. 7 shows the charger 70 temperature. There are abnormalities detected. The battery temperature abnormality detection routine and the charger temperature abnormality detection routine will be described below.

When the battery temperature check routine is executed, the controller 40 reads the temperature T1 detected by the temperature sensor 32 (step S800), and the threshold value TR.
It is compared with 1 (step S810). The threshold value TR1 is a value set as an upper limit of the temperature at which the battery 20 can be charged efficiently, and is a value determined by the type of the battery 20. When the temperature T1 is equal to or higher than the threshold value TR1, it is determined that the temperature is abnormal, and the battery temperature abnormality determination flag F
The value 1 is substituted for T1 (step S840), and this routine ends. When the temperature T1 is lower than the threshold value TR1, the temperature T1 is compared with the threshold value TR2 (step S82).
0). The threshold value TR2 is a value that is set in order to give hysteresis to the abnormality determination. Temperature T1 is threshold value TR2
When it is smaller, the battery temperature abnormality determination flag FT
The value 0 is substituted for 1 (step S830), and this routine ends. When the temperature T1 is equal to or higher than the threshold value TR2, this routine is terminated without changing the value of the battery temperature abnormality determination flag FT1.

On the other hand, when the charger temperature check routine illustrated in FIG. 7 is executed, the controller 40 first reads the temperature T2 detected by the temperature sensor 82 via the charger controller 90 (step S900). ), And the read temperature T2 is compared with the threshold value TR3 (step S910).
The threshold value TR3 is a value set as an upper limit of the temperature at which each component of the charger 70 operates normally, and is a value determined by the component of the charger 70. Temperature T2 is threshold TR
When it is 3 or more, the charger 70 determines that the temperature is abnormal, substitutes the value 1 in the charger temperature abnormality determination flag FT2 (step S940), and ends this routine. When the temperature T2 is lower than the threshold value TR3, the temperature T2 is compared with the threshold value TR4 (step S820). The threshold value TR4 is a value that is set in order to give hysteresis to the determination of the temperature abnormality. When the temperature T2 is lower than the threshold value TR4, the value 0 is assigned to the charger temperature abnormality determination flag FT2 (step S930), and this routine is ended. When the temperature T2 is equal to or higher than the threshold value TR4, the charger temperature abnormality determination flag FT
This routine ends without changing the value of 2.

The control device 40 determines the temperature abnormality of the battery 20 by checking the battery temperature abnormality determination flag FT1, and determines the temperature abnormality of the charger 70 by checking the charger temperature abnormality determination flag FT2. While the battery temperature abnormality determination flag FT1 or the charger temperature abnormality determination flag FT2 has the value 1, the relay 36 is turned off and the charging is stopped until both flags have the value 0. When an abnormality other than the temperature abnormality of the battery 20 and the temperature abnormality of the charger 70 is detected, the control device 40 and the relay 36 are turned off to stop the charging, the content of the abnormality is displayed on the display device 46, and the display device of the charger 70 is displayed. Communication is output so that it is also displayed on 96.

In this way, when the charging progresses while repeating the communication of the charging information and the abnormality check, and the state of the battery 20 judged by the detection value of the measuring device becomes the predetermined state stored in the ROM 40b in advance, the control is performed. The device 40 is
The end of charging is determined (step S440), and the end of charging is communicated and output to the charger control device 90 via the communication line CHG3 (step S450). Upon receiving this communication, the charger control device 90 sets the charging current value to 0 and terminates the charging, and outputs a message to that effect to the control device 40 via the communication line CHG4 (step S460). The control device 40, which has received the communication of the end of charging of the charger 70, sets the communication line CHGV2 to the high level as a signal to prohibit the subsequent charging (step S470). After receiving this signal, the charger 70 turns off the relay 76 to stop charging (step S485). Further, the control device 40 uses the relay 36.
Is turned off and the power supply of the charging system is turned off (step S480), and the charging control device 10 is stopped (step S490).

In the charging control device 10 described above, when the timer is set, the charging current is passed through the charging control device 30 to bring the battery 20 into the charging state, and it is determined whether or not the charging control device 10 has an abnormality. A mistake or the like can be detected at an early stage, and it is possible to prevent the charge from being hindered due to an abnormality that exists even when the timer is set, a connection error, or the like at the start of charging. Therefore, it is not possible to know that the battery could not be charged until after the expected end time of charging, and as a result, it is possible to prevent the inconvenience that the storage battery and thus the device using the battery cannot be used when the user wants to use it, thus improving usability. be able to. Further, even when charging is started, the same abnormality judgment as at the time of setting the timer is made. Therefore, it is possible to detect an abnormality that has occurred between the time when the timer is set and the time when charging is started, and it is possible to prevent damage to the device more reliably. be able to. Further, after the start of charging, the temperature abnormality of the battery 20 and the temperature abnormality of the charger 70 are detected, and the charging is stopped until the temperature decreases, so that the equipment can be prevented from being damaged and the charging can be efficiently performed. Of course, the charging control device 30 and the charger 70 communicate information regarding charging such as the type and state of the battery 20, the capacity of the charger 70, etc., and the battery 20 is charged by the charging current or charging voltage based on this information.
Since it is charged, it can be charged efficiently.

In the present embodiment, the same check routine is executed to judge an abnormality at the time of setting the timer and at the start of charging, but a different abnormality judgment may be made. For example, at the start of charging, the processes of steps S540 to S555 of the check routine of FIG. 4 may not be executed. This is because this process is for determining an abnormality inside the charge control device 30 such as the fuse 34 or the relay 36, so that if there is no abnormality when the timer is set, it is often unnecessary to detect the abnormality again.

Further, in the present embodiment, the temperature abnormality of the battery 20 and the temperature abnormality of the charger 70 are determined only after the start of charging, but a configuration in which they are also determined when the timer is set is also suitable. In this case, as long as there is no other abnormality, it is preferable to display the temperature abnormality and not stop the system but start the timer. This is because the temperature may drop by the time charging is started and the temperature abnormality may be resolved.

In the present embodiment, the control device 40 determines the abnormality of the device in the charger 70 by reading the detected value by the measuring device in the charger 70 and the state of the device via the charger control device 90. , The charger control device 90 has a ROM 90 in advance.
It is also preferable that the charger check routine (not shown) stored in b is activated to determine the abnormality of the device in the charger 70.

In the present embodiment, the delay time until the start of charging is set by the timer switch 88, but it is also preferable that the charger controller 90 has a built-in real time clock and the timer switch 88 sets the charging start time. .
In this case, the set charging start time may be stored and charging may be started at the same time every day.

In the present embodiment, the charging of the battery 20 by the charging control device 10 is controlled by the two-stage constant current charging method. However, the charging control by the constant current constant voltage charging method or the current value or Charge control by any method such as charge control that sequentially changes the voltage value is also suitable.
In this case, if necessary, the constant current circuit 74 may be replaced by a constant voltage circuit for setting a voltage value instructed by the charger control device 90, or both the constant current circuit 74 and the constant voltage circuit may be provided. .

The embodiments of the present invention have been described above.
The present invention is not limited to these examples, and it goes without saying that the present invention can be implemented in various modes without departing from the scope of the present invention.

[0051]

As described above, in the charging control device of the present invention, when the start of timekeeping is instructed by the timekeeping start means, an abnormal state of the charging system is detected and an alarm is output. It is possible to prevent the non-execution of charging due to an abnormality or a connection error that existed even at the start of timing. As a result, usability of the device can be improved. Of course, if an abnormal condition is detected during charging,
Since charging is not performed, it is possible to secure sufficient safety.

Further, if the charging control device detects an abnormality in the state of the storage battery, the state of the charging system, the state of connection between the storage battery and the charging system, and the state of connection between the charging system and a predetermined power source at the start of timing, It is possible to identify the abnormal portion and simplify the treatment at the time of abnormality.

Further, at the start of timekeeping, a closed circuit formed at the time of charging is formed in the charging system and the storage battery, and the state of the storage battery, the state of the charging system, the connection state between the storage battery and the charging system, the charging system and the predetermined state. The charging control device that detects an abnormality in the connection state with the power source can detect an abnormality that occurs when the charging state is set at the start of time measurement.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating an outline of a charge control device 10 that is an embodiment of the present invention.

FIG. 2 is a circuit diagram illustrating a connection state between a charge control device 30 and a charger 70.

FIG. 3 is an explanatory diagram showing a relationship between a charging control program executed by control device 40 and a charger program executed by charger control device 90.

FIG. 4 is a flowchart illustrating a check routine executed by the control device 40.

FIG. 5 is an explanatory diagram showing an example of temporal changes of a charging current value and a charging voltage value when the battery 20 is charged by the two-stage constant current charging method.

FIG. 6 is a flowchart illustrating a battery abnormality detection routine executed by the control device 40.

FIG. 7 is a flowchart illustrating a charger abnormality detection routine executed by the control device 40.

[Explanation of symbols]

 10 ... Charge control device 20 ... Battery 30 ... Charge control device 31 ... Charging conductive line 32, 82 ... Temperature sensor 34 ... Fuse 36, 76 ... Relay 38, 78 ... Ammeter 39, 79 ... Voltmeter 40 ... Control device 40a ... CPU 40b ... ROM 40c ... RAM 40d ... Input processing circuit 40e ... Output processing circuit 42, 44 ... Buses 42a, 42b, 44a, 44b ... Conductive lines 46, 96 ... Display device 50 ... Vehicle side connection connector 51 ... Connection state detection Mechanism 70 ... Charger 71 ... Charging conductive line 72 ... Rectifier circuit 74 ... Constant current circuit 84 ... Leakage sensor 86 ... Fan 86a ... Drive detection sensor 88 ... Timer switch 89 ... Start switch 90 ... Charger control device 90a ... CPU 90b ... ROM 90c ... RAM 90d ... input processing circuit 90e ... output processing circuit 9 t ... Timer 92 ... bus 92a, 92b, 94a, 94b ... conductive lines 98 ... attachment plug 100 ... charger-side connector 101 ... conductive lines

Claims (3)

[Claims] 1. A charging control device comprising a charging system connected to a predetermined power source to charge a storage battery, comprising: time setting means for setting a charging start time or a delay time until the start of charging; At a predetermined time, a time counting start unit that starts time counting to start charging the storage battery by the charging system, an abnormality detection unit that detects an abnormality of the charging system, and a start of time counting is instructed by the time counting start unit. At the time point, the abnormality detection means is operated, and when an abnormality is detected, a timing start warning means for outputting a predetermined warning output, and an abnormality detected by the abnormality detection means at the time of charging by the charging system In this case, a charging control device comprising: a charging non-execution unit that does not charge the storage battery by the charging system. 2. The abnormality detecting means indicates at least one of a state of the storage battery, a state of the charging system, a connection state of the storage battery and the charging system, and a connection state of the charging system and the predetermined power source. The charge control device according to claim 1, which is detected as an abnormal state. 3. The charge control device according to claim 2, wherein the abnormality detecting means forms a closed circuit formed during charging in the charging system and the storage battery to detect an abnormality.