JPH0537634Y2 - - Google Patents

Description

[Detailed explanation of the idea] 【Technical field】

The present invention relates to a charger in which a storage battery section is attached to a rechargeable electric device to supply power, and the storage battery section is detached from the rechargeable electric device and attached to a charger body for charging.

[Background technology]

Conventionally, nickel cadmium batteries have been widely used as storage batteries to supply power to rechargeable electrical devices, but if the storage battery is charged at a temperature exceeding 60 to 70 degrees Celsius, internal short circuits and capacitance may occur. Failures such as deterioration are likely to occur. In order to prevent this failure, a temperature sensor is installed inside the storage battery. When the temperature of the storage battery reaches 60 to 70℃, the temperature sensor detects this and the charging current is controlled by a cut circuit built into the charging module. I was trying to block it out. Therefore, immediately after using a rechargeable electrical device under a high load, the temperature of the storage battery becomes high, so the above-mentioned cut circuit may operate, and in this state, the storage battery cannot be connected to the charger body. Charging does not start even when attached, and conventional storage batteries have a nearly sealed structure to prevent foreign objects from entering, so heat dissipation is poor. There was a problem that there was a loss time of about 20 minutes for cooling at room temperature, which resulted in a longer charging time.

[Purpose of invention]

The present invention was developed in view of the above-mentioned technical background, and its purpose is to forcefully cool the storage battery during charging, thereby rapidly charging the storage battery in a shorter time. The goal is to make it possible.

[Disclosure of invention]

The charger of the present invention is a charger in which a storage battery part 1 having a built-in storage battery 5 is detachably attached to a charger main body 2 for charging, and a cooling opening 3 is provided in the storage battery part 1, It is characterized in that the cooling opening 3 is provided with an interlocking door 4 that opens in conjunction with the charger when it is attached to the main body 2 and closes in conjunction with the charger when it is removed from the charger main body 2. During charging, the interlocking door 4 of the storage battery section 1 is opened and the cooling opening 3 is opened, so that the hot air inside the storage battery section 1 can be forcibly released from the cooling opening 3. This makes it possible to reduce the loss time during charging and shorten the charging time. In addition, when the storage battery part 1 is removed from the charger main body 2,
Since the interlocking door 4 is closed, the cooling opening 3
This prevents foreign objects from entering the inside. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The charger A includes a storage battery section 1 and a charger main body 2, which are separate and detachable from each other. As shown in FIG. 1, the storage battery section 1 includes a storage battery 5 and a temperature sensor section 27 inside a container-shaped housing 6 and a lid-shaped housing 7.
A locking hook 8 for attaching to the charging electric device B is provided at the upper end of both opposing sides of the container-shaped housing 6.
A rectangular cooling opening 3 is opened in the upper part of the surface. A columnar terminal block 9 is protruded from the center of the lid-shaped housing 7, and a pair of charging terminals 10, which serve as the anode and cathode of the storage battery 5, and a temperature sensor section 27 are provided at the tip of the terminal block 9.
One sensor terminal 11 is provided which outputs the power, and a plurality of openings 12 are bored around the terminal block 9. The openings 12 and the cooling opening 3 are connected to the inside of the storage battery section 1. They are open to each other and communicate with each other. A vertical guide groove 13 is recessed in the inner wall surface of the housing 6 on both sides of the cooling opening 3 in parallel with the cooling opening 3.
Both ends of the interlocking door 4 are slidably fitted into the guide groove 13, and when the interlocking door 4 is raised, the cooling opening 3 is closed by the interlocking door 4. The interlocking door 4 is urged upward by a spring 14, and when the interlocking door 4 is lowered, the cooling opening 3 is opened and faces the upper end of the interlocking door 4 of the housing 7. Two opening/closing holes 15 are opened at each position, and when the interlocking door 4 is pushed through the opening/closing hole 15, the interlocking door 4 is opened.
is moved so that the cooling opening 3 is opened. Next, the charger body 2 has a structure as shown in FIGS. 3 and 5, and the upper surface of the upper casing 28 has a mounting recess 1 for mounting the storage battery part 1
A cooling fan 17 is built inside the casing 28, 29 facing the lower surface of the mounting recess 16, and a transformer 18 and a charging module 19 are built in on both sides of the cooling fan 17. has been done. The mounting recess 16 has three deep steps, and a guide boss 21 for inserting into the opening/closing hole 15 of the storage battery section 1 projects from the first step 20 from the shallow side. Relief portions 22 for storing the locking hook 8 are recessed on the inner periphery of both sides of the stepped portion 20, and a wind outlet hole 24 is bored in the second stepped portion 23. A pair of charging spring pieces 26a and one sensor spring piece 26b protrude from the stepped portion 25. Also,
An intake opening 30 is bored in a portion of the lower casing 29 that faces the cooling fan 17 . As shown in FIGS. 4 and 5, the storage battery section 1 is placed in the mounting recess 16 on the top surface of the charger main body 2.
When the terminal block 9 is inserted, the storage battery part 1 is held and mounted on the charger main body 2. At this time,
The tip of the terminal block 9 fits into the third step 25, and the charging terminal 10 and the sensor terminal 11 come into contact with the charging spring piece 26a and the sensor spring piece 26b, respectively. The circuit and the circuit of the charger main body 2 are connected as shown in FIG. 6, and charging of the storage battery 5 in the storage battery section 1 is started by the charger main body 2. At this time, by attaching the storage battery 5 to the charger body 2, the guide boss 21 enters the storage battery part 1 through the opening/closing hole 15 and pushes the interlocking door 4, as shown in FIG. Both cooling openings 3 are opened, and a cooling fan 17 is driven during charging to blow air sucked in from the intake opening 30, and the air blown from the cooling fan 17 is sent to the charger. It is blown out from the wind blowing hole 24 of the main body 2, enters the storage battery part 1 through the opening hole 12, changes direction and is discharged from the cooling opening 3, and at this time the storage battery 5 inside is cooled. It is. Note that even in this state, if the temperature inside the storage battery section 1 rises abnormally, the temperature sensor section 27 detects the abnormal temperature rise and stops the charging operation by the charger main body 2. Storage battery section 1 that has been charged as described above
is removed from the charger main body 2. Storage battery part 1
When it is removed from the charger body 2, the guide boss 21 comes out of the opening/closing hole 15, and the interlocking door 4 is closed by the elastic force of the spring 14, and the cooling opening 3 is closed and the inside of the storage battery part 1 is closed. is in a nearly sealed state. This storage battery section 1 is attached to a charging electric device B to supply electric power as a driving power source, and is detachably attached to the lower end of a grip 31 of a rechargeable electric tool as shown in FIG. 7, for example. . That is, when the terminal block 9 of the fully charged storage battery section 1 is inserted into the grip 31 from the lower end, the charging terminal 10 of the terminal block 9 and the power receiving spring piece 33 of the electric charging device B come into pressure contact with each other, and the storage battery section 1 The locking hook 8 engages with the locking recess 32 at the lower end of the grip 31 to prevent the storage battery part 1 from falling off. In the above embodiment, since the cooling fan 17 is also provided in addition to the cooling opening 3, the storage battery section 1 can be strongly forcedly cooled, a large charging current can flow, and the rechargeable electrical equipment Even in the case of the storage battery part 1, the temperature rise after use can be avoided and the charging can be carried out in a short time without any loss time.However, an embodiment without the cooling fan 17 is also possible, and in this case as well, a pair of The storage battery section 1 can be cooled by providing a cooling opening 3 to allow ventilation. Note that the storage battery unit 1 is not limited to being separate from the rechargeable electric device B as described above, but may be integrated.

[Effect of the idea]

The present invention is a charger that charges by attaching a storage battery part with a built-in storage battery to the charger main body in a detachable manner as described above, and the storage battery part is provided with a cooling opening and is interlocked when the storage battery part is installed in the charger main body. The cooling opening is provided with an interlocking door that opens when the battery is opened and closes when the charger is removed from the charger body. The hot air inside the storage battery can be forcibly discharged from the opening, thereby reducing the loss time during charging and shortening the charging time. In addition, when the storage battery part is removed from the charger body, the interlocking door is closed, so
This prevents foreign matter from entering the inside through the cooling opening.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, showing a storage battery section, Fig. 2 is a sectional view taken along line XX in Fig. 1, Fig. 3 is a perspective view showing the charger main body, and Fig. 4 The figure is a perspective view showing the state in which the storage battery unit is attached to the charger body, Figure 5 is a Y-Y sectional view of Figure 4, Figure 6 is the circuit diagram of the same as above, and Figure 7 is charging the storage battery unit of the same as above. FIG. 2 is a partially cutaway side view showing a state where the device is attached to a type electric device. 1... Storage battery section, 2... Charger main body, 3... Cooling opening, 4... Interlocking door, 5... Storage battery.

Claims (1)

[Scope of Utility Model Registration Claim] (1) A charger that performs charging by detachably attaching a storage battery unit containing a storage battery to the charger body,
The storage battery section is provided with a cooling opening, and the cooling opening is provided with an interlocking door that opens in conjunction with the storage battery when it is attached to the charger body and that shuts in conjunction with it when it is removed from the charger body. charger. (2) The charger according to claim 1 of the utility model registration, characterized in that a cooling fan for cooling the storage battery section is provided in the charger main body.