JPH0919067A - Charging apparatus - Google Patents

Abstract

PURPOSE: To provide a charging apparatus which realizes adequate charging without the designation of time only by connecting a charging cable. CONSTITUTION: A charging apparatus comprises a commercial power supply detecting circuit 9 for detecting that a commercial power supply 2 is electrically connected to a charging controller 5, a battery voltage detector 10 for detecting the voltage of a battery 8 and a controller 12 for detecting the period or time when the commercial power supply 2 is connected to compute the charging start time based on the power supply detecting signal detected by the commercial power supply detecting circuit 9 and battery voltage signal detected by the battery voltage detector 10 and then output a charging command to the charging controller 5 at the charging start time. Therefore, an operator is capable of realizing optimum charging only by inserting the charging cord 4 to a charging receptacle 1, without any setting or operation for the reserving time. Thereby, the load of an operator can be alleviated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device with a reserved charging function.

[0002]

2. Description of the Related Art As a conventional charging device with a reserved charging function, as disclosed in Japanese Utility Model Application Laid-Open No. 5-25950, a charging device provided with a timer capable of arbitrarily designating a start time of a charging operation. Device, as disclosed in Japanese Patent Application Laid-Open No. 6-30532, a charging device having a calculation means for calculating a charging start time so that the battery is in a fully charged state at an arbitrarily designated time (charging end time) It has been known.

[0003]

However, in the above-mentioned conventional charging device, the operator has to set the charging start time or the charging end time, which causes a problem that the setting is troublesome and a setting error occurs. .

[0004] The present invention is to solve the above problems,
It is an object of the present invention to provide a charging device in which a charging cord is connected to perform proper charging without specifying a time, and a stationary type is configured to perform proper charging only by connecting a battery. It is a thing.

[0005]

In order to solve the above problems, a charging device according to a first aspect of the present invention comprises a charging means for electrically connecting a commercial power source and a battery and rectifying the commercial power source to charge the battery. And a commercial power source detecting means for detecting that the commercial power source is electrically connected to the charging means, a battery voltage detecting means for detecting a voltage of the battery, and the commercial power source detecting means. Based on the power supply detection signal detected by and the battery voltage signal detected by the battery voltage detection means, the time or time at which the commercial power source is connected is detected to calculate the charging start time, and the charging start time is calculated at this charging start time. A control means for outputting a charging command to the charging means is provided.

A charging device according to a second aspect of the invention is the charging device according to the first aspect of the invention, in which the control means is connected to the commercial power source by turning off the power source detection signal detected by the commercial power source detecting means. When it is judged that the power supply has been disconnected, and when it is judged that the connection to the commercial power supply has been disconnected, the time or time is stored and a function for correcting the charging start time is added.

A third aspect of the present invention is the charging device according to the first aspect of the present invention, wherein the control means has a predetermined time period after which the power source detection signal detected by the commercial power source detecting means continues after charging. When it is determined that the battery voltage has reached the predetermined time and the battery voltage detected by the battery voltage detecting means has dropped to a predetermined voltage, a function of outputting a charging command to the charging means is added.

The charging device of a fourth aspect of the invention is the charging device of the first aspect of the invention, in which the control means has a predetermined period of time during which the power source detection signal detected by the commercial power source detecting means continues after charging is completed. When the time is reached, it is determined that it is a holiday, the charging start time is calculated again, and a function of outputting a charging command to the charging means at this charging start time is added.

Further, the charging device of the fifth invention is a charging device having a charging means for electrically connecting a commercial power source and a battery, rectifying the commercial power source to charge the battery,
Battery voltage detection means for detecting the voltage of the battery, connection detection means for detecting that the charging means is electrically connected to the battery by the voltage detected by the battery voltage detection means, and the connection Based on the connection detection signal detected by the detection means and the battery voltage signal detected by the battery voltage detection means, the time or time when the battery is connected is detected to calculate the charging start time, and the charging start time is calculated. And a control means for outputting a charging command to the charging means.

The charging device of the sixth invention is the charging device of the fifth invention, wherein the control means disconnects the battery connection detected by the connection detecting means to disconnect the connection to the battery. When it is determined that the battery connection is disconnected, the time or time is stored, and a function for correcting the charging start time is added.

The charging device of the seventh aspect of the invention is the charging device of the fifth aspect of the invention, wherein the control means has a battery connection time detected by the connection detection means after the end of charging reaches a predetermined time, and the battery When the battery voltage detected by the voltage detecting means is judged to have dropped to a predetermined voltage, a function of outputting a charging command to the charging means is added.

The charging device of an eighth aspect of the invention is the charging device of the fifth aspect of the invention, in which the control means causes a holiday when the battery connection time detected by the connection detection means reaches a predetermined time after completion of charging. It is characterized by adding the function of calculating the charging start time again and outputting a charging command to the charging means at this charging start time.

Further, the charging device of the ninth invention is the charging device of the fifth invention, wherein the control means causes the battery voltage detected by the battery voltage detection means to be equal to or higher than a predetermined voltage, so When the battery connection is judged to have been disconnected, and the battery connection has been disconnected during this charging, a function of outputting a charging end command to the charging means is added.

[0014]

According to the first aspect of the invention, the time or the time when the commercial power supply is connected is detected based on the power supply detection signal detected by the commercial power supply detection means and the battery voltage signal detected by the battery voltage detection means. Then, the charging start time is calculated, and a charging command is output to the charging means at this charging start time to execute charging.

Further, according to the second aspect of the invention, it is determined that the connection to the commercial power source has been disconnected because the power source detection signal detected by the commercial power source detecting means is turned off, and the connection to the commercial power source is made. When it is determined that the battery has been tripped, the time or time is stored and the charging start time is corrected.

Further, according to the third aspect of the invention, when the time during which the power source detection signal detected by the commercial power source detecting means continues for a predetermined time after the end of charging and the battery voltage drops to the predetermined voltage, the charging means. A charge command is output to and auxiliary charging is executed.

Further, according to the structure of the fourth aspect of the invention, after the end of charging, if the time during which the power source detection signal detected by the commercial power source detecting means continues for a predetermined time, it is determined that it is a holiday, and the charging start time. Output a charging command to the charging means,
Charge the battery.

With the configuration of the fifth invention, the time or time when the battery is connected is detected based on the connection detection signal detected by the connection detecting means and the battery voltage signal detected by the battery voltage detecting means, The charging start time is calculated, and a charging command is output to the charging means at this charging start time to execute charging.

According to the structure of the sixth invention, it is determined that the connection to the battery has been disconnected due to the battery connection detected by the connection detecting means being turned off, and the disconnection of the connection of the battery is determined. Then, the time or time is stored and the charging start time is corrected.

Further, according to the configuration of the seventh invention, when the battery connection time detected by the connection detecting means reaches a predetermined time after the end of charging and the battery voltage drops to the predetermined voltage, a charge command is output to the charging means. , Perform auxiliary charging.

Further, according to the structure of the eighth invention, when the battery connection time detected by the connection detecting means reaches a predetermined time after the end of charging, it is determined that it is a holiday, and the charging means is instructed to charge at the charging start time. Is output and charging is performed.

Further, according to the ninth aspect of the invention, when the battery voltage detected by the battery voltage detecting means becomes equal to or higher than a predetermined voltage, it is determined that the battery connection is disconnected during charging, and the charging means ends charging. Outputs a command and stops charging.

[0023]

An embodiment of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 shows a first embodiment of the present invention.
It is a block diagram of a vehicle-mounted charging device.

In FIG. 1, reference numeral 1 is a charging outlet, which is connected to a charging cord 4 which is connected to a commercial power source 2 via a breaker 3. Also, this charging outlet 1
A commercial power supply detection circuit 9 that is connected to a battery 8 via a charging control unit (details will be described later) 5, a transformer 6, and a rectifier 7 and that detects whether or not the commercial power supply 2 is connected.
It is connected to the.

A battery voltage detector 10 for detecting the voltage of the battery 8 and an outside air temperature detector 11 for detecting the outside air temperature.
Is provided, the power source detection signal (digital signal) detected by the commercial power source detection circuit 9, the battery voltage signal (analog signal) detected by the battery voltage detector 10, and the outside air temperature detector 11 are detected. A control device (details will be described later) 12 that controls the charging by outputting a charging start signal and a charging end signal to the charging control unit 5 based on the outside air temperature signal (analog signal) is provided. The control device 12 is composed of a microcomputer.

The charging control unit 5 has a function of electrically connecting the charging outlet 1 and the battery 8 {on (ON), off (OFF)}, and the charging output from the control unit 11 is performed. When the start signal is input, the connection is turned on to charge the battery 8, and when the charge end signal is input, the connection is turned off to stop the charging of the battery 8.

The control device 12 will be described in detail with reference to the block diagrams of FIGS. 2 and 3. The relay ON that operates when the power supply detection signal output from the commercial power supply detection circuit 9 is ON, that is, when the charging device is connected, and the relay OFF that operates when the power supply detection signal is OFF, that is, when the charging device is disconnected. Is provided, and a one-shot generator 21 that outputs one pulse when the relay ON is turned on and a one-shot generator 22 that outputs one pulse when the relay OFF is turned on are provided.

Further, it has a clock function, and the data of the current time is outputted from this "clock". The data of this time is stored in the memory as the vehicle use end time T _E by the data transfer device (MV) 23 operated by the output pulse of the one-shot generator 21, and operated by the output pulse of the one-shot generator 22. The data transfer unit (MV) 24 stores the vehicle start time T _S in the memory. Further, the average value of the vehicle use start times T _S is calculated and stored as the average value T _SH . Further, the vehicle use end time T _E is subtracted from the vehicle use start time T _S by the subtractor 47 to obtain the charging device connection time T _{J and} collect it as data.

Further, the battery voltage (analog signal) detected by the battery voltage detector 10 is compared with the charging completion timer operating voltage set value α by the data comparator (CP +) 25, and the battery voltage is equal to or higher than this set value α. Then,
The output of the data comparator (CP +) 25 is turned on, the timer 25A is activated, and the relay is OK after the timer activation time Tα.
Works. The relay OK operates when the battery 8 is fully charged.

Further, the battery voltage is measured by the data comparator (C
P-) 26 compares the voltage drop detection set value β, and when the battery voltage becomes equal to or lower than this set value β, the output of the data comparator (CP-) 26 is turned on and the relay BAD operates. The relay BAD operates when the battery voltage drops to the brownout detection voltage.

Further, the deviation between the charge completion timer operating voltage set value α and the battery voltage is calculated by the subtractor 27, and this deviation and the outside air temperature (analog signal) detected by the outside air temperature detector 11 are used as a function generator (FUN). ) 28, the required charging time until reaching the charging completion timer operating voltage set value α is obtained, and the charging time T _C obtained by adding the timer operating time Tα to this time is obtained and output. It

Further, a counter that starts counting time when the relay ON is turned on, stops counting time when the relay OFF is turned on, and resets the count value.
29 is provided, the count value (time) output from the counter 29 is compared with the time set value γ (for example, 5 minutes) by the data comparator (CP +) 30, and when the count value becomes the set value γ or more. The output of the data comparator (CP +) 30 is turned on. The output of this data comparator (CP +) 30 and the relay BAD that operates by the battery voltage drop
The output of is ANDed by AND 31
When both are on, the relay START1 operates. When the relay START1 operates, automatic charging is performed.

When it is confirmed by AND 32 that both the relay ON and the relay OK are turned on, the time counting is started, and when the relay OFF is turned on, the time counting is stopped and the count value is reset. Counter 33
Is provided, the count value (time) output from the counter 33 is compared with the time set value δ (for example, 48 hours) by the data comparator (CP +) 30, and when the count value becomes the set value δ or more, The output of the data comparator (CP +) 30 is turned on, and the relay START2 operates. When the relay START2 operates, automatic holiday charging is performed.

The count value (time) output from the counter 33 is compared with the time set value ε (for example, 90 hours) by the data comparator (CP +) 37, and when the count value becomes equal to or greater than the set value ε, The output of the data comparator (CP +) 37 is turned on. The logical product of the output of the data comparator (CP +) 37 and the output of the relay BAD operated by the battery voltage drop is obtained by the AND 38, and when both are on, the relay START3 operates. Relay START3
When is operated, automatic supplementary charging is performed.

Further, the subtractor 41 average T _SH necessary charging time from T _C and variation σ charging start time is subtracted T _L1 of the vehicle using the start time is determined by, the charging start time and the time data T _L1 Are compared by the data comparator (CP +) 42 that operates when the relay START1 is on, and when the time data reaches the charging start time T _L1 , the data comparator (CP +) 42 operates.

Further, the subtracter 43 subtracts the holiday charging time ζ and the variation σ set from the average value T _SH of the vehicle use start times to obtain the charge start time T _L2 , and the time data and this charge start time are obtained. T _L2 is, relay START2
Are compared with each other by the data comparator (CP +) 44 that operates when the time is ON, and when the time data reaches the charging start time T _L2 , the data comparator (CP +) 44 operates.

The OR of the output of the data comparator (CP +) 42, the output of the data comparator (CP +) 44, and the ON output of the relay START3 is obtained by the OR (OR) 45,
Further, the AND of the output of the OR 45 and the OFF output of the relay OK is obtained by the AND 46, and the relay ST operates by the output of the AND 46.

The output of the relay ST is output to the charging control unit 5 as a charging start signal, and the output of the relay OK or the output of the relay OFF or 48 is output to the charging control unit 5 as a charging end signal. It

The operation of the above structure will be described below with reference to the time charts of FIGS. First,
When the charging cord 4 is inserted into the charging outlet 1 and the commercial power source detection circuit 9 detects the commercial power source 2 and the power source detection signal is turned on, the relay ON is turned on and the relay OFF is turned off. When the relay ON is turned on, the one-shot generator 21 operates, and the time at that time is stored in the memory as the vehicle use end time T _E by the data transfer device (MV) 23.

On the contrary, when the charging cord 4 is pulled out from the charging outlet 1 and the power detection signal of the commercial power detection circuit 9 is turned off, the relay ON is turned off and the relay OF is turned off.
F is turned on. When the relay OFF is turned on, the one-shot generator 22 operates and the time at that time is stored in the memory as the vehicle use start time T _S by the data transfer device (MV) 24, and its average value T _SH is Required and stored in memory.

Further, the battery voltage is determined by the data comparator (C
P +) 25 is compared with the charge completion timer operating voltage set value α, and the data comparator (CP-) 26 is compared with the voltage drop detection set value β, and when the battery voltage becomes equal to or higher than the set value α, When the battery voltage reaches the charge completion voltage and the timer operation time Tα elapses, the relay OK operates, and when the battery voltage becomes less than or equal to the set value β, that is, when the battery voltage drops to the voltage drop detection voltage, the relay BAD is Operate. In addition, relay is OK
The charging end signal is output to the charging control unit 5 during the operation of.

Further, the deviation between the charging completion timer operating voltage set value α and the battery voltage is calculated, and the required charging time until the charging completion timer operating voltage set value α is reached is calculated from this deviation and the outside air temperature (analog signal). The charging time T _C is calculated by adding the timer operating time Tα to this time.

When the relay ON is turned on, the counter 29 starts counting, and when the count value reaches the time setting value γ (for example, 5 minutes), when the battery voltage is low (relay BAD is In the case of ON), the relay START1 that executes automatic charging operates.

When the relay START1 operates, the required charging time T is calculated from the average value T _{SH of the} previous vehicle use start times.
_The charge start time T _L1 is obtained by subtracting the variation σ from _C, and when the time reaches the charge start time T _L1 , when the battery voltage does not reach the charge completion voltage (when the relay OK is off), the relay ST changes It operates and is output to the charging control unit 5 as a charging start signal to start charging, and automatic charging is performed. Then, when the battery voltage reaches the charge completion timer operating voltage set value α and the timer operating time Tα elapses (relay OK is turned on), or when the charging cord 4 is pulled out from the charging outlet 1 (relay OFF is turned on).
Then, the charging end signal is output and the charging is ended.

Further, once the relay OK is turned on, the counter 33 starts to operate, and when the count value (time) reaches the time set value δ (for example, 48 hours), it is judged as a holiday and the relay START2 operates. To do. Relay start
When 2 operates, the set holiday charging time ζ and the variation σ are subtracted from the average value T _SH of the vehicle use start times to obtain the charging start time T _L2 , and the time data becomes the charging start time T _L2. , The relay ST operates and is output to the charging control unit 5 as a charging start signal to start charging, and automatic holiday charging is performed. Then, whether the holiday charging time ζ has elapsed (relay OK is on) or the charging outlet 1
When the charging cord 4 is pulled out further (when the relay OFF is turned on), the charging end signal is output and the charging is ended.

When the count value (time) of the counter 33 becomes the time set value ε (for example, 90 hours) and the relay BAD operates due to the battery voltage drop, the relay START is started.
3 operates, the relay ST operates, and is output to the charging control unit 5 as a charging start signal to start charging and automatic supplementary charging is performed. Then, the battery voltage reaches the charging completion timer operating voltage set value α and the timer operating time Tα elapses (relay OK is turned on), or the charging outlet 1
When the charging cord 4 is pulled out further (when the relay OFF is turned on), the charging end signal is output and the charging is ended.

Thus, on weekdays, automatic charging is executed so that the charging is completed by the average value T _SH of the vehicle use start times up to the previous time, and when it is determined that the vehicle is on a holiday, the vehicle use is started on a holiday. The charging is performed again for the holiday charging time ζ so that the charging is completed by the average time T _SH, and when the vehicle is not used for a long time, the automatic supplementary charging is executed due to the voltage drop. The vehicle use start time T _S is collected as data every time.

Therefore, the operator uses the charging cord 4
Optimal charging simply by plugging it into the vehicle's charging outlet 1
It is possible to set, such as reservation time and operation
Therefore, the burden on the operator can be reduced. Also
Average value of vehicle start time T _SHWill be updated every time
From the last vehicle use start time T_SOptimum time considering
Charging can be started in the meantime. Furthermore, in the long run
Maintains battery voltage even when left unused
Can be (Second Embodiment) FIG. 6 shows a second embodiment of the present invention.
It is a block diagram of a stationary charging device. The structure of the first embodiment
The same components as those in FIG.
You.

In the second embodiment, the charging device is placed separately from the vehicle, and the charging device is normally kept connected to the commercial power source 2. Charge the battery 8 using the charging code
This is done by plugging 15 into a charging outlet 16 connected to the rectifier 7. Further, when the charging cord 15 is inserted into the charging outlet 16 and the breaker is off, a buzzer 17 is provided to notify the operator that the power is off, and a manual stop switch 14 is provided.

The control device 12 'is different from that of the first embodiment.
The points are shown in FIG. 7 and will be described. A function that works when the charger is connected
Ray ON and relay OFF that operates when the charging device is removed
And a relay that detects that the charging device has been tripped during charging.
B The operating condition of the CUT is detected by the battery voltage.
You. That is, it is detected by the battery voltage detector 10.
Set the voltage to the voltage setting value η_L(Eg 30V), η_H(Tato
If set to 66V, use the data comparator (CP +) 51
Voltage setting value η_LTo the data comparator (CP-) 52
Voltage setting value η_HCompared with, the detected voltage is the voltage setting
Value η _LRelay OFF when less than, voltage setting by AND53
Constant value η_LAbove, voltage setting value η _HRelay ON when:
Voltage setting value η_HIf it exceeds, the relay CUT is operating.
You.

The AND of the relay ON output and the power supply detection signal is obtained by AND 54. When the relay ON is ON and the power supply detection signal is OFF, the relay AR is operated. The output of the relay AR is output to the buzzer 17 to notify the power off. When the manual stop switch 14 is operated by the AND 55 when the battery voltage is equal to or higher than the voltage setting value η _L , the relay HOFF operates. The operation conditions of the relay HOFF and the relay CUT are added to the condition of charging termination.

Similarly, in the configuration of the second embodiment as described above,
The operator plugs the charging cord 15 into the charger's charging outlet 16
Just plug it in and you'll be able to charge the battery optimally, and you won't need to set or operate reserved time, and you'll be less burdened by the operator. Also, during charging, charge code 15
When is pulled out, charging is terminated, reconnection of the charging cord in the charged state can be prevented, and malfunction of the control device or occurrence of failure can be prevented.

[0053]

As described above, according to the first aspect of the invention, the commercial power supply is connected based on the power supply detection signal detected by the commercial power supply detection means and the battery voltage signal detected by the battery voltage detection means. By calculating the charging start time by detecting the time or time that is present, outputting a charging command to the charging means at this charging start time, and performing the charging, the operator simply connects the charging device to the commercial power source, Optimal charging can be performed, setting and operation such as reserved time are not required, and the operator's burden can be reduced.

According to the second aspect of the invention, it is judged that the connection to the commercial power source has been disconnected because the power source detection signal detected by the commercial power source detecting means is turned off, and the connection to the commercial power source is judged. When the trip is determined, the time or the time is stored and the charging start time is corrected, so that the charging can always be finished at the optimum time in consideration of the previous vehicle use start time.

Further, according to the third aspect of the invention, when the time during which the power source detection signal detected by the commercial power source detecting means continues after the end of charging reaches the predetermined time and the battery voltage drops to the predetermined voltage, the charging means is operated. By outputting the charge command and executing the supplementary charge, the battery voltage can be maintained even when the battery is left unused for a long period of time.

According to the fourth aspect of the invention, when the time during which the power source detection signal detected by the commercial power source detecting means continues for a predetermined time after the end of charging, it is determined that it is a holiday,
By outputting a charging command to the charging means at the charging start time and executing charging, the battery voltage can be optimized for holidays.

According to the fifth invention, the time or time when the battery is connected is detected based on the connection detection signal detected by the connection detecting means and the battery voltage signal detected by the battery voltage detecting means, By calculating the charging start time, outputting a charging command to the charging means at this charging start time, and executing charging, the operator can perform optimal charging simply by connecting the battery to the charging device, and making a reservation. It is not necessary to set or operate the time, and the operator's burden can be reduced.

According to the sixth aspect of the invention, it is determined that the connection to the battery has been disconnected due to the battery connection detected by the connection detecting means being turned off, and the disconnection of the connection of the battery is determined. By storing the time or time and correcting the charging start time, the charging can always be finished at the optimum time in consideration of the previous vehicle use start time.

Further, according to the seventh invention, when the battery connection time detected by the connection detecting means reaches a predetermined time after the end of charging and the battery voltage drops to the predetermined voltage,
By outputting the charge command to the charging means and executing the supplementary charge, the battery voltage can be maintained even when the battery is placed unused for a long period of time.

According to the eighth aspect of the invention, when the battery connection time detected by the connection detecting means reaches a predetermined time after the end of charging, it is determined that it is a holiday and a charging command is issued to the charging means at the charging start time. By outputting and charging the battery, the battery voltage can be optimized for holidays.

Further, according to the ninth aspect, when the battery voltage detected by the battery voltage detecting means becomes equal to or higher than the predetermined voltage, it is judged that the battery connection is disconnected during charging, and the charging means is instructed to terminate the charging. Is output and charging is stopped, it is possible to prevent reconnection of the charging cord in the charging state, and prevent malfunction or failure of the control device.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a charging device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a control device of the charging device.

FIG. 3 is a block diagram of a control device of the charging device.

FIG. 4 is a time chart explaining the operation of the control device of the charging device.

FIG. 5 is a time chart explaining the operation of the control device of the charging device.

FIG. 6 is a configuration diagram of a charging device according to another embodiment of the present invention.

FIG. 7 is a block diagram of a control device of the charging device.

[Explanation of symbols]

 1,16 Charging outlet 2 Commercial power supply 3 Breaker 4,15 Charging cord 5 Charging control unit 6 Transformer 7 Rectifier 8 Battery 9 Commercial power supply detection circuit 10 Battery voltage detector 11 Outside temperature detector 12, 12 'Control device 14 Switch 17 Buzzer

Claims (9)

[Claims] 1. A charging device comprising a charging means for electrically connecting a commercial power source and a battery, rectifying the commercial power source to charge a battery, wherein the commercial power source is electrically connected to the charging means. A commercial power source detecting unit that detects connection, a battery voltage detecting unit that detects the voltage of the battery, a power source detection signal detected by the commercial power source detecting unit, and a battery detected by the battery voltage detecting unit. Based on the voltage signal, the charging time is calculated by detecting the time or time when the commercial power source is connected, and the charging means is provided with a control means for outputting a charging command to the charging means. Charging device to do. 2. The charging device according to claim 1, wherein the control means determines that the connection to the commercial power supply has been disconnected when the power supply detection signal detected by the commercial power supply detection means is turned off. However, when it is judged that the connection to the commercial power source is disconnected, the time or time is stored and a function for correcting the charging start time is added. 3. The charging device according to claim 1, wherein the control means has a power supply detection signal detected by the commercial power supply detection means for a predetermined time after the end of charging, and has a predetermined voltage. When the battery voltage detected by the detection means is determined to have dropped to a predetermined voltage, a function of outputting a charging command to the charging means is added. 4. The charging device according to claim 1, wherein when the control means has a predetermined time after the charging is finished, the power detection signal detected by the commercial power detection means continues for a holiday. It is characterized by adding a function of determining that there is, calculating the charging start time again, and outputting a charging command to the charging means at the charging start time. 5. A charging device comprising a charging means for electrically connecting a commercial power source and a battery, rectifying the commercial power source to charge the battery, the battery voltage detecting means detecting a voltage of the battery. A connection detection unit that detects that the charging unit is electrically connected to the battery by the voltage detected by the battery voltage detection unit; and a connection detection signal and the connection detection signal detected by the connection detection unit. Based on the battery voltage signal detected by the battery voltage detection means, a time or time at which the battery is connected is detected to calculate a charging start time, and a charging command is output to the charging means at the charging start time. A charging device comprising means. 6. The charging device according to claim 5, wherein the control means determines that the battery connection detected by the connection detection means is turned off and the connection to the battery is disconnected, When it is determined that the battery is disconnected, the time or time is stored and a function for correcting the charging start time is added. 7. The charging device according to claim 5, wherein the control means causes the battery connection time detected by the connection detection means to reach a predetermined time after completion of charging, and is detected by the battery voltage detection means. When it is determined that the battery voltage has dropped to a predetermined voltage, a function of outputting a charging command to the charging means is added. 8. The charging device according to claim 5, wherein the control means determines that it is a holiday when the battery connection time detected by the connection detection means reaches a predetermined time after completion of charging, and again. A feature is that a function of calculating a charging start time and outputting a charging command to the charging means at the charging start time is added. 9. The charging device according to claim 5, wherein the control unit disconnects the battery during charging because the battery voltage detected by the battery voltage detection unit is equal to or higher than a predetermined voltage. When it is determined that the battery connection is disconnected during the charging, a function of outputting a charging end command to the charging means is added.