KR0166938B1 - Rapid and ordinary charging device and its method - Google Patents

Abstract

The present invention relates to a fast charging device and a method for both general and general use, and in particular, a rapid and general charging device for efficient charging is possible because it detects an appropriate state of completion of charge corresponding to each of the rapid charging and general charging to prevent malfunction It is about a method.

Accordingly, the rapid and general charging device of the present invention includes a charging battery, a power supply unit for supplying power for charging the battery, a current change detection unit for detecting an output current change amount of the power supply unit, and the power supply unit. A constant current converter that adjusts the output current to a constant level, a power switch that supplies or cuts the output by the constant current converter to the battery, a battery type discriminator that detects the type of the battery, and a charging time of the battery. A constant current converter and a power switch are controlled by signals of a charge time detector for detecting, a temperature conversion detector for detecting a temperature change amount of the battery, a signal of the current change detector, a battery type discriminator, a charge time detector, and a temperature change detector. Characterized in that it comprises a charge control unit, the rapid and general charging method of the present invention When the battery is fully discharged, the first step of supplying power for charging the battery, the second step of determining the type of the battery and setting the corresponding charging completion time, and the charging completion time set by counting the time that the battery is charged This is characterized in that it comprises a third step of terminating the charge.

Description

Rapid and General Purpose Chargers and Methods

1 is a block diagram of a conventional charging device.

2 is a detailed block diagram of a charging completion detection unit according to the related art.

3 is a flow chart showing a conventional charging method.

4 is a block diagram of a rapid and general charging device of the present invention.

5 is a detailed block diagram of the charge completion detection unit according to the present invention.

Figure 6 (a) (b) is a graph showing the characteristic curve of the temperature change detection unit and the charging time detection unit according to the present invention.

7 is a flow chart showing a first embodiment of a rapid and general charging method according to the present invention.

8 is a flow chart showing a second embodiment of the rapid and general charging method according to the present invention.

9 is a flow chart showing a third embodiment of the rapid and general charging method according to the present invention.

* Explanation of symbols for main parts of the drawings

21: battery 22: power supply

23: current change detection unit 24: constant current converter

25: power supply switching unit 26: battery type determination unit

27: charge control unit 28: charge time detection unit

29: temperature change detection unit 30: charging time selection switch

31: time counter 32: comparator

The present invention relates to a fast charging device and a method for both general and general use, and in particular, a rapid and general charging device for detecting efficient charging completion state corresponding to each of the rapid charging and general charging to prevent the malfunction, enabling efficient charging and It is about a method.

Hereinafter, with reference to the accompanying drawings will be described a conventional rapid and general charging device and method as follows.

1 is a block diagram of a conventional charging apparatus, and FIG. 2 is a detailed block diagram of the charging completion detection unit of FIG.

First, as shown in FIG. 1, the conventional charging device includes a battery 1 for charging and discharging charges with a built-in temperature fuse, a thermostat, and a thermistor, and a power supply unit for supplying power for charging the battery ( 2) and a current change detection unit 3 for detecting a change amount of current corresponding to the completion of charging by inputting the supply power of the power supply unit 2, and a current applied by the power supply unit 2 at a predetermined level. A constant current converting unit 4 for adjusting the power supply, a power supply switching unit 5 for supplying or interrupting the output current of the constant current converting unit 4 to the battery, and a battery for determining whether the battery 1 is mounted. The detection unit 6, a temperature change detection unit 7 for detecting a temperature change of the thermistor inside the battery, and the power switch 5 are turned on, at which the time is counted and counted. To compare the charging end time Charging for controlling the on / off of the power switching unit by receiving a signal from the charging time detection unit 8 for detecting the complete time, the current change detection unit 3, the charging time detection unit 8, and the temperature change detection unit 7. The control unit 9 is configured.

Operation of the conventional charging device configured as described above is as follows.

As shown in FIG. 1, the power of the power supply unit 2 is adjusted to a constant level by the constant current converter 4 to start charging the battery 1 according to the turn-on of the power switch 5. do.

In this case, the battery 11 has a built-in temperature fuse and a thermostat thermistor. When the charging of the battery is completed, the internal temperature of the battery increases and the temperature table is automatically cut off when the internal temperature reaches a specific temperature. .

In addition, the thermostat cuts off when the internal temperature of the battery reaches a certain temperature, and cools down again after the shutdown, and shorts again when the temperature falls below the specified temperature.

In addition, if the internal resistance of the thermistor decreases with increasing the internal temperature of the battery, a voltage value corresponding to the variable resistance value is input to the temperature change detection unit 7.

Subsequently, the voltage input to the temperature change detection unit 7 is sampled 7a at regular intervals for A / D conversion as shown in FIG. 2, and is compared at the comparator 7c with a reference value 7a corresponding to the completion of charging and the reference value. If greater than or equal to, the charging completion signal is output to the charging control unit 9.

In addition, the current change detection unit 3 detects the output current by the power supply unit 2, detects a current corresponding to the charging completion state, and outputs a charging completion signal to the charging control unit 9.

Also, as shown in FIG. 2, the charging time detector 8 counts the time by the time counter 8b at the same time as the turn-on of the power switch 5, and the reference value corresponding to the charging completion time. When the 8a and the comparator 8c compare with each other and are greater than or equal to the reference value, the charging completion signal is output to the charging control unit 9.

As described above, the charging completion detection method is configured to operate in parallel with each other to compensate for an error in each charging completion detection operation.

3 is a flowchart illustrating a conventional charging method, in which the discharge state of the battery is determined (101) and the power switching unit is turned on when the discharge state is completely discharged (102).

As the power switching unit is turned on, the current change detection unit, the temperature change detection unit, and the charge time detection unit of the charging completion detector set the reference values corresponding to the respective charging completion states (103, 104, 105) and compare the reference values with each other. (106) 107 (108) detection signals are output to the charging control unit (9).

The charge control unit 9 receives the charge completion detection signal and the power switch unit 5 turns off (5) so that detection is terminated.

In addition, the conventional charging device and method as described above performs the charging completion detection operation according to the already charged charging time and temperature change, even though the charging time and temperature change rate of the super fast charging battery and the general charging battery are not the same. Since it is necessary to charge a lot of time without the need, there was a problem that the state of switching to the charge stop state is not completed yet.

The present invention has been made to solve the above problems, it is possible to perform an efficient charging operation because it detects the type of battery and performs a charge completion detection operation corresponding to the type of battery by the control by the charging control unit It is an object of the present invention to provide a fast and general charging device and method.

In order to achieve the above object, the rapid and general charging device according to the present invention includes a charging battery, a power supply unit supplying power for charging the battery, a current change detection unit detecting an output current change amount of the power supply unit, A constant current converter that adjusts the output current by the power supply to a constant level, a power switch that supplies or cuts the output by the constant current converter to the battery, a temperature conversion detector that detects a temperature change amount of the battery; Battery type determination unit for detecting the type of battery according to the temperature change detection amount, the charging time detection unit for detecting the charging time of the battery, the signal of the current change detection unit, battery type determination unit, charging time detection unit and temperature change detection unit It characterized in that it comprises a charge control unit for controlling the constant current conversion unit and the power switching unit by In the rapid and general charging method of the present invention, the first step of supplying power for charging the battery when the battery is in a full discharge state, and the second step of determining the type of the battery and setting a corresponding charging completion time accordingly. And a third step of terminating the charging when the charging completion time is reached by counting the time that the battery is charged.

Hereinafter, with reference to the accompanying drawings will be described in detail a rapid and general charging device and method of the present invention.

FIG. 4 is a block diagram of the rapid and general charging apparatus of the present invention, and FIG. 5 is a detailed block diagram of the charging time detector and the temperature change detector of FIG.

First, as shown in FIG. 4, a battery 21 having a built-in temperature fuse, a thermostat, and a thermistor, a power supply 22 for supplying power for charging the battery, and an output by the power supply 22 A current change detector 23 for detecting a current change amount to determine a state of completion of charging, a constant current converter 24 for adjusting the output current by the power supply 22 to a constant level, and the constant current converter 24 A power supply switching unit 25 for supplying or blocking the output of the battery 21 to the battery 21, a battery type determining unit 26 for detecting the type of the battery, and an output signal of the battery type determining unit 26; The charging control unit 27 adjusts the current level of the constant current converter 24 and the charging signal according to the type of the battery 21 by the control signal of the charging control unit 27 to detect the charging completion signal. Charge time detection unit 28 output to the control unit 27 And a temperature change detector 29 which detects a temperature change of the thermistor according to the type of battery according to the control signal of the charge control unit 27 and outputs a charge completion signal to the charge control unit.

Here, the charging time detection unit 28 receives a control signal from the charging control unit 27 as shown in FIG. 5 and selects a charging time selection switch 30 for selecting a reference value of the charging completion time according to the type of battery. The time counter 31 which counts the charging time simultaneously with the turn-on of the power switching unit 25 is compared with the value of the counter 31 and the reference value selected by the charging time selection switch 30 to correspond to the battery type. The comparator 32 detects a charging completion time and outputs a charging completion signal to the charging control unit 27.

And the temperature change detection unit 29 is the same as the conventional.

Operation of the rapid and general charging device of the present invention configured as described above is as follows.

First, when the battery is mounted, the charging control unit 27 turns on the power switching unit 25 to start charging at the current level set at the constant current converter 24, that is, 5 [A].

Subsequently, the battery type determining unit 26 turns off the power switching unit 25 when the set time elapses, compares the temperature change detection value of the temperature change detection unit 29 with the reference value, determines the type of battery, and determines the determination signal. Output to the charge control unit 27.

At this time, the battery type discrimination unit 26 has a temperature change reference value of the normal charging battery and a temperature change reference value of the fast charging battery according to the set time.

Therefore, when the temperature change detection value of the temperature change detection unit 29 and the temperature change reference value of the fast charging battery and the normal charging battery are compared, and the temperature change detection value is higher than the temperature change reference value of the fast charging battery, the currently installed battery is rapidly charged. If the temperature change detection value is equal to or higher than the temperature change reference value of the normal charging battery, the currently installed battery is determined as a normal charging battery.

Subsequently, the charging control unit 27 receives a signal from the battery type determining unit 26 and sets the current level of the constant current converting unit 24 to a current level corresponding to the battery type (at rapid charge: 5 [A], normal charging). Hour: 1.1 [A]).

Next, the power switching unit 25 is turned on to charge the battery with the power regulated by the constant current converter 24.

As the power switching unit 25 is turned on, the battery starts charging.

Subsequently, as the battery 21 is charged, the internal temperature of the battery increases, and when the internal temperature reaches a specific temperature, the temperature fuse built in the battery is blocked.

At this time, the thermostat also shuts off when the battery's internal temperature reaches a certain temperature, cools down again after it shuts off, and shorts again when it reaches a certain temperature.

Meanwhile, when the resistance value of the thermistor decreases as the internal temperature increases, the voltage value corresponding to the variable resistance value is input to the temperature change detector 23.

Subsequently, the voltage value input to the temperature change detector 23 is sampled at a constant period for A / D conversion, but in the case of rapid charging, the sampling period is shortened for more sensitive detection.

Subsequently, the charging completion signal is applied to the charging control unit 27 when the temperature change amount and the charging completion temperature change reference value are greater than or equal to the charging completion temperature change reference value.

On the other hand, the charging time selection switch 30 of the charging time detection unit 28 is connected to the charging completion time reference value corresponding to the type of battery by the control signal of the charging control unit 27.

At this time, the time counter 31 when the power switch 25 is turned on and at the same time counts the time corresponding to the battery type, the charging time detection unit 28 sends a charge completion signal to the charge control unit 27 Will print.

At this time, the charging time detector 28 sets the reference value to about 120% of the time corresponding to the full charge in the case of rapid charging.

(A) and (b) of FIG. 6 are graphs showing the characteristic curves of the temperature change detector and the charge time detector according to the present invention. As shown in FIG. 6 (b) shows the difference in the charging completion time according to the charging time.

7 is a flow chart showing a first embodiment of the rapid and general charging method according to the present invention, Figure 8 is a flow chart showing a second embodiment, Figure 9 is a flow chart showing a third embodiment.

First, in the rapid and general charging method according to the first embodiment of the present invention, as shown in FIG. 7, the discharge state of the battery is determined (201), and when the battery is completely discharged, the power switching unit for charging the battery is turned on (202).

Then, when the current change is detected (203), the power switching unit is turned off if it is equal to or larger than the reference current change amount (204), and when the temperature change is detected (205), the power switching unit is turned off when it is larger than or equal to the reference temperature. (204) and also detect whether the battery is fast charging (206) and set the charging completion time required for the fast charging in case of the fast charging battery (207) and set the charging completion time required for the battery for the normal charging After that (208), the charging is performed for a set charging time (209) (210) when the time is completed, turn off the power switching unit (204).

Here, the first embodiment of the present invention is controlled by the charging time according to the type of battery.

Meanwhile, in the rapid and general charging method according to the second embodiment of the present invention, as shown in FIG. 8, the discharge state of the battery is determined (301), and when the battery is completely discharged, the power switching unit for charging the battery is turned on (302).

Then, when the current change is detected (303), the power supply switching unit is turned off when it is equal to or greater than the reference current change amount (304). Also, when the charging time is compared with the reference value according to the battery type (305), when the power value is greater than or equal to the reference value, Turn off the unit (304), and also detect whether the battery is fast charging (306), and set the sampling cycle short for the fast charging battery (307), and set the sampling cycle long for the normal charging (309). If the change is detected and the temperature change is greater than or equal to the reference value (308) (310), the power switch is turned off (304).

Then, a constant reference time is set regardless of rapid and general charging and charging is performed during that time (305).

Here, the second embodiment of the present invention is a method of controlling the rapid and general charging using the temperature change according to the type by determining the type of battery.

In the rapid and general charging method according to the third embodiment of the present invention, the current detection is set to a constant value regardless of the battery for rapid and general charging, as shown in FIG. 9, and the sampling cycle of the temperature change detection unit is set according to the type of battery. A method of charging the battery by varying the charging completion time of the charging time detector at the same time, detecting the battery discharge state (401) and turning on the power switching unit (402) to charge the battery if the battery is discharged completely.

Subsequently, when the amount of current change is detected (403) or greater than or equal to the reference value, the power switching unit is turned off (404) to complete charging.

If the battery for fast charging is detected by detecting the type of battery (405), the charging completion reference time corresponding to the fast charging battery is set (406) while charging for the set reference time and sampling corresponding to the fast charging battery. The cycle is set (408) and the temperature change amount according to the charging time is compared with the temperature reference value corresponding to the fast charging battery (409) to perform charging.

Then, if the battery for general charging sets the charging completion reference time corresponding to the battery for general charging (410) and performs charging at the same time by setting the sampling cycle corresponding to the battery for general charging (412).

As described above, the rapid and general charging apparatus and method of the present invention detect the type of battery and perform the appropriate charging completion operation on the battery, so that the temperature of the charging completion time and the amount of change depending on the charging time are different. In this case, since the charging is performed by detecting an appropriate charging completion signal, an efficient charging operation can be realized in the rapid and general charging device.

Claims (11)

A charging battery, a power supply for supplying power for charging the battery, a current change detector for detecting an output current change amount of the power supply, a constant current converter for adjusting the output current by the power supply to a predetermined level, A power switch for supplying or blocking the output of the constant current converter to the battery, a temperature conversion detector for detecting the temperature change of the battery, and a battery type discriminator for detecting the type of the battery according to the temperature change detection result And a charging control unit for controlling the constant current converter and the power switching unit by signals of the current change detection unit, the battery type determination unit, the charge time detection unit, and the temperature change detection unit. Combined rapid and general charging device characterized in that. The method of claim 1, wherein the charging time detection unit is controlled by a charging control unit, the charging time selection switch for selecting a reference value of the charging completion time according to the battery type, a count for counting the charging time of the battery, and the time counter value Rapid and general charging device characterized in that the comparator for comparing the reference value according to the type of battery and outputs to the charge control unit. The method of claim 1, wherein the temperature change detection unit is a sampling unit for sampling to detect the temperature change amount of the battery at different intervals according to the type of the battery under the control of the charge control unit, and the sampled signal and the reference signal to the charge control unit Rapid and general charging device, characterized in that configured as a comparator for outputting. When the battery is in a full discharge state, a first step of supplying power for charging the battery, a second step of determining the type of the battery and setting a corresponding charging completion time, and counting the time at which the battery is charged Rapid and general charging method comprising a third step of terminating the charge when the completion time. 5. The method of claim 4, further comprising: detecting a current of the power source for charging the battery and completing charging if the battery is equal to or greater than a predetermined reference value; and detecting charging of the battery to an internal temperature of the battery; Rapid and general charging method characterized in that made. The method of claim 4, wherein if the battery is for fast charging, the charging completion time is shortened, and if the battery is for normal charging, the charging completion time is set relatively long. When the battery is fully discharged, the first step of supplying power for charging the battery, the second step of determining the type of the battery and setting the sampling period according to the type, and detecting the internal temperature of the battery to the set sampling period. And a third step of sampling, and a fourth step of terminating the battery charging when the sampled value is compared with the reference value and is equal to or greater than the reference value. The method of claim 7, wherein the fifth step of terminating the charge if the current of the power supply supplied regardless of the battery type is equal to or greater than the reference value, and the charging time is set by setting the charging completion time regardless of the battery type. If the charging time is more than the set charge completion time and general charging method characterized in that it comprises a sixth step of terminating the charge. 8. The method of claim 7, wherein the sampling cycle is set short if the battery is fast charging, and the sampling cycle is set relatively long for normal charging. When the battery is fully discharged, the first step of supplying power for charging the battery, the second step of determining the type of the battery and setting the charging completion time and the sampling period according to the battery type, and the charging time of the battery. And counting and detecting the internal temperature of the battery and sampling the battery at a predetermined period, and terminating the charging when the counted charging time is equal to or greater than the set charging completion time or when the sampled value is equal to or greater than the reference value. Rapid and general combined charging method. The charging method of claim 10, further comprising a fifth step of detecting charging current regardless of the type of battery and terminating the charging when the current is higher than the reference value.