JPH0688153U - Charger - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose of the present invention is to
This is to allow the user to arbitrarily set the capacity of the power supply unit, and thus to freely select the charging speed and the like of the battery to be charged. The charging device according to the present invention includes a charging stand 2 on which a battery B to be charged is mounted, a plurality of power supply units 8 and 14 connected to the charging target battery B so as to be able to supply a charging current, and a built-in charging stand 2. The charging control unit 3 controls the supply of charging current from the power supply units 8 and 14 to the battery B to be charged, and at least one of the power supply units 14 is detachable from the charging stand 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a charging device, and more particularly, to a charging device that can arbitrarily select a charging power source.

[0002]

[Prior art]

 Rechargeable batteries that can be used repeatedly by recharging have been in the limelight with the recent miniaturization and portability of electronic devices.

The charging time in such a charging device for a battery to be charged has been gradually shortened from the conventional 8 to 10 hours, and recently has become extremely short as 1 to 2 hours, and further, it is expected to be shortened. Has become. Thus, in order to shorten the charging time, a large charging current must be applied to the battery to be charged, and therefore a large capacity power source is required.

[0004]

[Problems to be solved by the device]

 As described above, using a large-capacity charging power source naturally causes an increase in the size and weight of the charging device, which is inconvenient for the user of the charging device.

Therefore, according to the present invention, the user can arbitrarily select the capacity of the power supply unit according to the usage of the charging device, and thus the charging speed of the battery to be charged can be freely selected. The purpose is to

[0006]

[Means for Solving the Problems]

 The charging device of the present invention includes a charging stand on which a battery to be charged is mounted, a plurality of power supply units connected to the charging target battery so as to supply a charging current to the charging target battery, and a built-in charging base that is connected to the charging unit. A charging control unit that controls the supply of charging current to the rechargeable battery, wherein at least one of the power supply units is detachable from the charging stand.

[0007]

[Action]

 According to the present invention, it is possible to arbitrarily select the power supply unit that supplies the charging current to the battery to be charged. Therefore, when the charged battery is normally charged, the charged battery is charged only by the first power supply unit, and when the charged battery is charged rapidly (or very rapidly), the second power supply unit (in addition to the first power supply unit) is charged. Alternatively, instead of the first power supply unit, a second power supply unit having a larger rated capacity is connected to charge the battery to be charged.

[0008]

【Example】

 1 and 2 are an external perspective view and an electric circuit diagram showing a first embodiment of the present invention. Reference numeral 1 is a battery pack, which contains a battery B to be charged. 2 is a charging stand on which the battery pack 1 can be detachably mounted, and 3 is a charging control section built in the charging stand 2. The charging control section 3 detects the charging current flowing in the battery B to be charged. A current detection unit 4, a sensor sensitivity unit 5 that sets a detection sensitivity for detecting the full charge of the battery B to be charged based on the battery voltage of the battery B to be charged, a protection timer unit 6 that defines the charging time of the battery B to be charged, and The microcomputer 7 controls the charging operation of the battery B to be charged based on the charging current detected by the current detector 4.

Reference numeral 8 denotes a first power supply unit built in the charging stand 2, and a charging current from the first power supply unit 8 is charged through a first charge switching unit 9 whose operation is controlled by the microcomputer 7. Supplied to battery B. Reference numeral 10 denotes a display unit provided on the upper surface of the charging base 2 for displaying whether the battery B to be charged is being charged or fully charged, and 11 denotes a plug blade rotatably provided on the bottom surface of the charging base 2, Commercial power is supplied to the first power supply unit 8 through the plug blade 11. Reference numerals 12a, 12b and 12c (see FIG. 2) are a pair of input terminals and signal output terminals which are connected to a second power supply section 13 described later.

Reference numeral 13 is a power supply stand that is detachably attached to the charging stand 2, and 14 is a second power supply section built in the power supply stand 13, and the second power supply section 14 includes, for example, a first power supply section 8 and a second power supply section 8. Has the same rated output capacity. Reference numerals 15a, 15b and 15c denote a pair of output terminals and signal input terminals arranged on the upper surface of the power supply base 13, which are connected to the input terminals 12a, 12b and the signal output terminal 12c, respectively. Reference numeral 16 is a second charge switching unit arranged between the second power supply unit 14 and the output terminal 15a. This second charge switching unit 16 is based on a signal from the microcomputer 7 input from the signal input terminal 15c. The operation is controlled. Reference numeral 17 is an outlet portion into which the plug blade 11 is inserted, and 18 is a connection cord to which commercial power is input.

In such a configuration, the to-be-charged battery B built in the battery pack 1 is mounted on the charging stand 2 and can be normally charged by the first power supply section 8 built therein. Furthermore, by mounting the charging stand 2 on the power supply stand 13, both the first power supply section 8 and the stand 2 power supply section 14 can perform rapid charging.

When the plug blade 11 of the charging stand 2 equipped with the battery pack 1 is connected to the commercial power source, the first power source unit 8 passes through the first charge switching unit 9 to charge the battery B to be charged with the charging current. To supply. This charging current is detected by the current detector 4 and applied to the microcomputer 7. Based on the charging current value, the microcomputer 7 recognizes that the charging is performed only by the first power supply unit 8, and the sensor sensitivity and the protection timer time (see the first mode in Table 1) in the first mode are respectively set. The sensor sensitivity section 5 and the protection timer section 6 are set.

Further, the microcomputer 7 does not perform supplementary charging after the end of normal charging and the blinking operation of the display unit 10 during charging is also shown in the first mode of Table 1 based on the charging current value. To set.

Under the first mode, the microcomputer 7 controls the charge switching unit 9 to charge the battery B to be charged. During this charging, the microcomputer 7 sequentially detects the battery voltage of the battery B to be charged, and when it detects that the battery voltage has dropped from the peak value by -ΔV = 10 mV, it detects a full charge and terminates the charging.

On the other hand, when the charging second power source 13 is attached, the charging is performed from both the first power source unit 8 and the second power source unit 14 via the first charging switching unit 9 and the second charging switching unit 16, respectively. The charging current is supplied to the battery B to be charged. Based on the charging current detected by the current detection unit 4, the microcomputer 7 recognizes that the charging is performed by both the first power supply unit 8 and the second power supply unit 14, and the sensor sensitivity and the protection timer time in the second mode. (See Table 1) are set in the sensor sensitivity section 5 and the protection timer section 6, respectively.

Further, the microcomputer 7 sets not to perform supplementary charging after the end of normal charging and the blinking operation of the display unit 10 during charging as shown in the second mode of Table 1. .

Under the second mode, the microcomputer 7 controls the charging switching unit 9 and the second charging switching unit 16 to charge the battery B to be charged. Therefore, the battery B to be charged is charged by being supplied with a larger charging current (in the present embodiment, twice the charging current) than that charged by only the charging base 2. When it is detected that the battery voltage of the battery B to be charged reaches the peak value, full charge is detected and charging is terminated.

[0018]

[Table 1]

FIG. 3 shows a second embodiment of the present invention, in which 20 is a pack battery, 21 is a charging coupler for detachably mounting a battery pack, and the charging control unit is the same as in the first embodiment. Store in house. Reference numerals 22, 23, and 24 denote first to third power supply units having different rated capacities, respectively, and have the same power supply unit and charge switching unit as those of the first embodiment.

That is, in the present embodiment, the first power supply unit 8 and the first charge switching unit 9 in the first embodiment are configured to be detachable from the charging stand 2. Then, the charging of the battery to be charged in the battery pack 20 is appropriately controlled based on which of the first to third power supply stands 22, 23 and 24 the power supply stand attached to the charging coupler 21 is. .

[0021]

[Effect of device]

 According to the present invention, a charging stand on which a battery to be charged is mounted, a plurality of power supply units connected to the charging target battery so as to be capable of supplying a charging current, and a charging unit built in the charging stand and from the power supply unit to the charging unit. A charging control unit that controls the supply of charging current to the rechargeable battery is provided, and at least one of the power supply units is detachable from the charging stand. The capacity of the unit can be set arbitrarily, and the charging speed of the battery to be charged can be freely selected.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a circuit diagram showing a first embodiment of the present invention.

FIG. 3 is a schematic view showing a second embodiment of the present invention.

[Explanation of symbols]

 1 pack battery 2 charging stand 3 charging control section 8 first power supply section 13 power supply stand 14 second power supply section

Claims (1)

[Scope of utility model registration request] 1. A charging stand on which a battery to be charged is mounted, a plurality of power supply units connected to the charging target battery so as to be able to supply a charging current, and a charging unit built in the charging stand from the power supply unit to the charging target battery. A charging control unit that controls the supply of a charging current to the charging unit, wherein at least one of the power supply units is detachable from the charging stand.