JPH02254929A - Charging apparatus - Google Patents

Abstract

PURPOSE:To perform an appropriate charge corresponding to the state of a charged battery and battery pack by providing an apparatus with a charge- dedicated function part and a charge and discharge function part respectively and by fitting said apparatus with various functions. CONSTITUTION:When a power cord is connected with an AC power supply, an apparatus judges the presence of a battery. When a battery pack is set at charge function parts 1a, 1b, 1c and a charge and discharge function part, said charge function parts 1a, 1b, 1c and charge and discharge function part 2 are charged with electricity in said order. The battery pack set at the charge and discharge function part 2 starts discharge after the completion of charge. At the time of discharge, the service capacity until the time for a battery voltage to reach 1V is caused to correspond to four stages of 40%, 60%, 80% and 100% to light a flashing lamp. When said lamp is lighted at the value of said service capacity 80%, discharge charges to charge and it is necessary to check whether the battery pack reaches an always full charge. When the battery reaches the full charge, a charge lamp is lighted to display that charge is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a charging device for charging a secondary battery such as a nickel-cadmium battery.

(B) Prior Art In recent years, cordless devices such as 8MFF+ video cameras have become increasingly popular, and as a result, secondary batteries have come into widespread use as power sources for these types of devices. The specific method of use is to prepare multiple battery packs containing single cells or two or more E batteries, use them interchangeably, and charge the used single cells or battery packs for reuse. I'm trying to do what I can.

By the way, among multiple cells or battery packs,
For example, depending on the time of purchase, some batteries may not recover their battery capacity even after normal charging.

Therefore, a charging device equipped with a charging means and a means for measuring and displaying the discharge life of a charged battery was proposed in Japanese Patent Laid-Open No. 62-14.
It is disclosed in Japanese Patent No. 1934.

(c) Problems to be Solved by the Invention In the above-mentioned conventional technology, after all the cells or battery packs are charged, they are discharged in order to measure the discharge life of the charged batteries. Some of the cells or battery packs that you have may be able to fully recover with just regular charging after you have purchased them, so you may need to repeat the process of charging, discharging, and then charging again. That is a waste.

(d) Means for Solving the Problems The gist of the present invention is to provide a charging-only function unit that only charges the battery, and a function unit that charges the battery and discharges the charged battery to measure and display the battery capacity. The present invention provides a charging device characterized in that a charging/discharging function section is provided.

Further, the charging device is characterized in that the battery set in the charge-only function section can be charged when the battery set in the charge/discharge function section is discharged.

Furthermore, when both the battery set in the charge-only function section and the battery set in the charge/discharge function section are charged, the battery set in the charge-only function section is charged preferentially. It is located in a charging device.

Furthermore, there is also a charging device characterized in that two or more charging-only functional sections are provided.

(e) Function: According to the device of the present invention, a charge-only function section and a charge/discharge function section are respectively provided. If the battery was purchased a long time ago or the desired battery capacity was not obtained the last time it was used, by setting it in the charging/discharging function part that is equipped with a means to measure and display the battery capacity. It becomes possible to charge the single battery or battery pack appropriately depending on the situation of the battery pack itself.

Generally, when charging, a method is used to shorten the charging time by charging with a large current, and when charging a plurality of batteries or battery packs, the batteries are charged one after another. On the other hand, when discharging, the discharge time is longer because the discharge is performed with a small current. Therefore, when discharging a battery set in the charge/discharge function part, there is a problem that even if the battery is set in the charge-only function part, it cannot be charged for a long time.However, in the present invention, the charge/discharge function part It is designed so that when a battery that has been inserted into the battery is discharged, the battery that has been inserted into the charging-only function section can be recharged.

Furthermore, when batteries or battery packs are set in the charge-only function section and the charge/discharge function section, and both batteries or flat batteries are to be charged, it is necessary to use batteries or battery packs that have good characteristics and can be used immediately. That is, the battery or battery pack set in the charging-only function section is charged preferentially.

(f) Example An embodiment of the present invention will be described in detail below based on the drawings.

Figure 1 is a perspective view of the charging device with the power cord pulled out, Figure 2 is a front view of the charging device with the power cord stored, Figure 3 is a block diagram, and Figure 4 is a flowchart explaining the operation. It is.

In Figures 1 and 2, (la) (lb) (lc)
is the charge-only function section, (2) is the charge/discharge function section, (3) (3
)... is the contact, (4) is the operation knob for attaching and detaching the battery pack, (5) is the charge indicator lamp, (6) is the discharge capacity indicator lamp, (7) is the power cord, and (8) is the battery pack. be.

In FIG. 3, the device of the present invention includes a power supply section (10), a control section (11) equipped with a microcomputer that performs charge/discharge control and charge/discharge detection, a display section (12), and a display section (12) set in each functional section. Charging location switching unit (1) for sequentially charging battery packs
3), a charging-only functional unit (la) (lb) (IC),
It consists of a charge/discharge function section (2) and a feedback section (14) that notifies the control section (11) of the state of the battery pack of each function section.

Next, the operation will be explained based on FIG.

When the power cord is connected to an AC power source, the device starts and first determines whether the battery is present or not. When a battery pack is set in any of the functional parts, charging starts, and the charging indicator lamp in the functional part in the charging state flashes, and it is constantly checked whether the battery pack has reached full charge.

When fully charged, the charging indicator lamp lights up to indicate that charging is complete. Next, the presence or absence of a battery in another functional section is determined, and if a battery pack is present in another functional section, a charging operation similar to that described above is performed. If battery packs are set in all functional parts (la), (lb), (lc), and (2), charge them in the order of functional parts (1a), (lb), (lc), and (2). It is now possible to do so.

Now, when all the battery packs set in the charge-only function parts (la), (lb), and (lc) are fully charged, or if the battery packs are set only in the charge-discharge function part (2), the charge-discharge function part The battery pack set in (2) starts discharging after charging is completed. This charge/discharge function part (2)
The charging indicator lamp flashes during charging, but after charging, the charging indicator lamp turns off after charging is completed, which is different from the charging indicator lamps of other functional parts. Make it. When discharging, the discharge capacity per battery until the battery voltage reaches IV is 40%.
The 4 discharge capacity display lamps are divided into 4 stages of 60%, 80%, and 100%, and the previous lamp blinks until each discharge capacity value is reached, and at the end of discharge, it blinks. All lamps below the lamp will light up.

and at least 80% of the discharge capacity indicator lamp
When it detects that the value is lit, it moves to the final charging,
When charging, the charging lamp flashes and the battery is constantly checked to see if it has reached full charge. When the battery reaches full charge, the charging lamp lights up to indicate that charging is complete.

Here, if the 80% discharge capacity display lamp does not light up, that is, if the discharge capacity does not reach 80%, recharging is performed. This recharging is repeated twice, and if it is the third time, it will move on to the final charging and end charging, but the user should use this battery pack with the understanding that it does not have sufficient capacity. become.

In addition, in this device, when battery packs are set in the charge-only function section and charge/discharge function section as described above, they are charged sequentially, but in that case, the battery pack set in the charge/discharge function section is charged last. It is now possible to do so.

Furthermore, when the battery pack inserted into the charge/discharge function section is discharging, it can be charged by inserting the battery pack into the charge-only function section.

(g) Effects of the Invention As described above, the charging device according to the present invention has a charging-only functional section and a charging/discharging functional section, as well as a wide variety of other functions. Alternatively, appropriate charging can be performed depending on the situation of a flat battery, and its industrial value is extremely large.

[Brief explanation of drawings]

The drawings all relate to the present invention; FIG. 1 is a perspective view of the charging device with the power cord pulled out, FIG. 2 is a front view of the charging device with the power cord stored, and FIG. 3 is a block diagram. FIG. 4 is a flowchart explaining the operation. (Ia) (lb) (lc)...charging-only function section, (2
)... Charge/discharge function section, (3)... Contact, (4)...
・Operation knob, (5)...Charging indicator lamp, (6)・
・・Discharge capacity display lamp, (8) ・・Battery pack, (
10)...Power supply unit, (11)...Control unit, (12)
... Display section, (13) ... Charging place switching section, (14
)... Return part.

Claims (4)

[Claims] (1) A charging device characterized by being provided with a charging-only functional section that only charges the battery, and a charging/discharging functional section that charges the battery, discharges the charged battery, and measures and displays the battery capacity. . (2) When discharging the battery set in the charge/discharge function section,
The charging device according to claim 1, wherein a battery set in the charging-only function section can be charged. (3) When a battery set in the charge-only function section and a battery set in the charge/discharge function section are both charged, the battery set in the charge-only function section is charged preferentially. The charging device according to claim (1). (4) The charging device according to claim (1), wherein two or more charging-only functional sections are provided.