WO2012139381A1

WO2012139381A1 - Integrated battery charger with usb port

Info

Publication number: WO2012139381A1
Application number: PCT/CN2011/082445
Authority: WO
Inventors: 刘喜信; 杨福如; 吴伯财
Original assignee: 江门市蓬江区朗达电池有限公司
Priority date: 2011-04-11
Filing date: 2011-11-18
Publication date: 2012-10-18

Abstract

Disclosed is an integrated battery charger with a USB port, comprising a casing and a battery chamber which is arranged on the casing and used for holding a rechargeable battery. Two ends of the battery chamber are provided with metal pieces connected to battery electrodes. A charging circuit board is installed in the casing. The metal pieces at the two ends of the battery chamber are electrically connected to the charging circuit board. A USB port being used for introducing an external voltage is fixedly mounted on the casing, and the USB port is electrically connected to the charging circuit board. The volume of the present invention can be controlled within an extremely small range, and the voltage carried in the integrated battery charger does no harm the human body. In addition, the integrated structure of the present invention has the advantages of being more compact, more convenient for manufacturing and use, and smaller in volume.

Description

Integrated battery charger with USB port

Technical field

The invention relates to a battery charger structure, in particular to an integrated battery charger with a USB socket.

Background technique

Compared with the traditional disposable battery, the rechargeable battery has the advantages of convenient use, cost saving, environmental protection, etc., so its use range will become more and more extensive. In order to be able to replenish energy in case of insufficient power, the rechargeable battery needs to be used with the charger.

The current battery charger is generally an AC input, and the input AC voltage is converted into a DC voltage suitable for battery power by voltage conversion. Due to the AC/DC conversion, these battery chargers generally need to be equipped with a transformer and the like, which makes the overall battery charger bulky, the structure is not compact enough, and there are certain safety hazards in use.

Summary of the invention

In order to solve the above problems, the present invention provides an integrated charger with a USB socket that is small in size, compact in structure, and safe to use.

The technical solution adopted by the present invention to solve the problem is:

The integrated battery charger with a USB socket includes a casing and a battery compartment disposed on the casing for placing a rechargeable battery. The battery compartment has metal plates connected to the battery electrodes at both ends thereof, and a charging circuit board is mounted in the casing. The metal piece is electrically connected to the charging circuit board, and is characterized in that a USB socket for directly introducing an external voltage is fixedly disposed on the outer casing, and the USB socket is electrically connected to the charging circuit board.

Preferably, the metal piece includes a first metal piece for connecting to an electrode of the battery, and a second metal piece and a third metal piece for connecting to the other electrode of the battery, the third metal piece being disposed on the first metal The position between the sheet and the second metal piece.

The distance between the first metal piece and the second metal piece matches the length of the AA battery, and the distance between the first metal piece and the third metal piece matches the length of the AAA battery.

The battery compartment includes a lateral mounting groove disposed between the second metal piece and the first metal piece for supporting the AA battery, and the lateral mounting groove is provided with an oblique mounting groove for supporting the AAA battery, and the third metal piece is disposed on the Tilt the bottom of the slot.

The bottom of the outer casing is a flat bottom surface, and the charging circuit board is fixed above the flat bottom surface in a manner parallel to the flat bottom surface.

The battery compartment is disposed above the charging circuit board.

The USB socket is disposed at a side position of the outer casing, and the USB socket is parallel to the flat bottom surface.

The USB socket is disposed at a position close to the flat bottom surface.

An indicator light for indicating a state of charge is disposed on the outer casing, and the indicator light is electrically connected to the charging circuit board.

The indicator light is an LED light.

The invention has the beneficial effects that the USB socket configured by the invention can introduce a DC voltage of about 5V into the charger, and the DC voltage of the 5V can be converted into a charging voltage suitable for the battery after a simple conversion, in the voltage conversion. The device does not need a device such as a transformer, so the volume of the present invention can be controlled within a very small range, and the voltage it carries does not cause harm to the human body. In addition, the present invention fixes the USB socket to the outer casing, and It is not connected by a connecting line, which makes the charger an integrated whole structure, which has the advantages of more compact structure, more convenient manufacture and smaller volume.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

1 is a schematic structural view of a charger of the present invention;

2 is a cross-sectional structural view of the charger;

Figure 3 is a schematic diagram of a charging application of the charger;

4 is a schematic diagram of a state in which a charger charges a battery;

FIG. 5 is a schematic diagram of another state in which the charger charges the battery.

detailed description

1 and 2, an integrated battery charger with a USB socket of the present invention includes a housing 1 and a battery compartment 2 disposed on the housing 1 for placing a rechargeable battery. Both ends of the battery compartment 2 are provided with a battery. The metal piece 3 to which the electrode is connected is generally in the form of a contact piece at the positive electrode connection of the battery, and is generally in the form of a spring piece at the connection of the negative electrode of the battery. A charging circuit board 4 is mounted in the housing 1 , and the metal piece 3 is electrically connected to the charging circuit board 4 . The housing 1 is fixedly provided with a USB socket 5 for introducing an external voltage. The USB socket 5 and the charging circuit board 4 are electrically connected. connection. When the rechargeable battery is charged, the battery is first placed in the battery compartment 2, so that the positive and negative electrodes of the battery are in contact with the metal piece 3 in the correct direction, and then the power is charged to perform normal charging work.

The types of batteries currently used are various, and in order to enable the present invention to meet the charging needs of more battery products, as a preferred embodiment, the metal piece 3 includes a first metal piece 31 for connection to an electrode of the battery and for use with the battery. The second metal piece 32 and the third metal piece 33 are connected to the other electrode, and the third metal piece 33 is disposed at a position between the first metal piece 31 and the second metal piece 32. By setting the distance between the first metal piece 31 and the second metal piece 32 and the distance between the first metal piece 31 and the third metal piece 33, the charger can simultaneously satisfy the charging needs of two different rechargeable batteries. Considering that the commonly used batteries are generally AA batteries and AAA batteries, it is further preferred that the distance between the first metal piece 31 and the second metal piece 32 matches the length of the AA battery, that is, the distance is about 50.5 mm ± 2.0, the first The distance between the metal piece 31 and the third metal piece 33 matches the length of the AAA battery, that is, the distance is about 44.5 mm ± 2.0. The state of charge of the AA battery and the AAA battery are shown in Figures 4 and 5, respectively. In addition, in order to ensure a compact structure of the charger and facilitate the placement of the battery, the battery compartment 2 includes a lateral battery mounting groove 21 disposed between the second metal piece 32 and the first metal piece 31, and an oblique battery is disposed in the horizontal battery mounting groove 21. The groove 22 is mounted, and the third metal piece 33 is disposed at the bottom of the oblique battery mounting groove 22.

The invention can be plugged into a general USB power supply socket through the USB socket 5 for charging during use, or can be charged in an AC power socket by using an AC-to-USB voltage voltage converter in the manner of FIG. Very convenient.

The DC voltage introduced by the USB socket 5 is generally about 5V, and the voltage can be converted into a voltage suitable for the rechargeable battery after a simple conversion and processing. For example, in some embodiments, the voltage converted by the charger via the charging circuit board is between about 1.4V and 1.6V, making the charger suitable for use as a nickel-cadmium, nickel-hydrogen battery charger; in other embodiments, The voltage of the charger after being converted by the charging circuit board is about 3.7V~4.3V, making this charger suitable for use as a 3.2V-3.7V lithium ion rechargeable battery charger.

In practical application, in order to make the structure of the charger further compact, the bottom of the outer casing 1 of the present invention is preferably set to a flat bottom surface 6, and the charging circuit board 4 is fixed above the flat bottom surface 6 in a manner parallel to the flat bottom surface 6, so that The space occupied by the charging circuit board 4 is as small as possible to ensure easy installation. Further, it is further preferred that the battery compartment 2 is disposed above the charging circuit board 4, and can be conveniently realized when the metal piece 3 at both ends of the battery compartment 2 is connected to the charging circuit board 5, as shown in the embodiment of FIG. 3 can be directly extended to the charging circuit board 5. Further, in order to make the charger more convenient when plugged into the USB port, the USB socket 5 of the present invention is disposed at the side position of the casing 1, the USB socket 5 is parallel to the flat bottom surface 6, and further preferably, USB The socket 5 is placed close to the flat bottom surface 6, which allows the charger to be easily plugged into a lower port such as a USB port of a notebook computer.

Further, in order to enable the user to know the state of charge of the battery in time, the present invention preferably has an indicator light 7 on the housing 1 for indicating the state of charge, the indicator light 7 being electrically connected to the charging circuit board 4, the indicator light 7 More preferably, it is an LED lamp.

The battery compartment cover of the present invention can also be provided with a battery compartment cover so that the battery can be more reliable when charging. In addition, a USB socket can be provided on the USB socket to protect the USB socket. The above is only for some preferred embodiments of the present invention. The drawings and the description, but the embodiments of the present invention are not limited by the above embodiments, and as long as they achieve the technical effects of the present invention by substantially the same means, they should fall within the protection scope of the present invention.

Claims

An integrated battery charger with a USB socket, comprising a casing (1) and a battery compartment (2) disposed on the casing (1) for placing a rechargeable battery, and two ends of the battery compartment (2) are connected to the battery electrode a metal piece (3), a charging circuit board (4) is mounted in the outer casing (1), and the metal piece (3) is electrically connected to the charging circuit board (4), characterized in that the outer casing (1) is fixedly disposed. The USB socket (5) is directly connected to the external voltage, and the USB socket (5) is electrically connected to the charging circuit board (4).
The integrated battery charger with a USB socket according to claim 1, wherein said metal piece (3) comprises a first metal piece (31) for connecting to an electrode of the battery and for another battery The electrode is connected to the second metal piece (32) and the third metal piece (33), and the third metal piece (33) is disposed at a position between the first metal piece (31) and the second metal piece (32).
The integrated battery charger with a USB socket according to claim 2, wherein the distance between the first metal piece (31) and the second metal piece (32) matches the length of the AA battery, the first metal piece (31) The distance from the third metal piece (33) matches the length of the AAA battery.
The integrated battery charger with a USB socket according to claim 2 or 3, wherein the battery compartment (2) comprises a lateral battery installation disposed between the second metal piece (32) and the first metal piece (31) The slot (21), the lateral battery mounting slot (21) is provided with an oblique battery mounting slot (22), and the third metal piece (33) is disposed at the bottom of the oblique battery mounting slot (22).
The integrated battery charger with a USB socket according to claim 1, wherein the bottom of the outer casing (1) is a flat bottom surface (6), and the charging circuit board (4) is parallel to the flat bottom surface (6). The way is fixed above the flat bottom surface (6).
The integrated battery charger with a USB socket according to claim 5, characterized in that the battery compartment (2) is disposed above the charging circuit board (4).
The integrated battery charger with a USB socket according to claim 5 or 6, wherein the USB socket (5) is disposed at a side position of the outer casing (1), the USB socket (5) and the flat bottom surface. (6) Parallel.
The integrated battery charger with a USB socket according to claim 7, wherein said USB socket (5) is disposed at a position close to the flat bottom surface (6).
The integrated battery charger with a USB socket according to claim 1, wherein said housing (1) is provided with an indicator light (7) for indicating a state of charge, said indicator light (7) and charging The board (4) is electrically connected.
The integrated battery charger with a USB socket according to claim 9, wherein the indicator light (7) is an LED light.