JP2009005567A - Battery spacer having charging circuit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive structure even in a non-contact rechargeable battery including a charging circuit and a secondary coil. <P>SOLUTION: The cylindrical battery spacer A having the charging circuit is used to be loaded with a cylindrical secondary battery 1 detachably through its opening 10open. The battery spacer A is characterized in that: the secondary battery 1 is contained in the battery spacer A approximately coaxially therewith wherein a diameter of the secondary battery 1 is smaller than that of the battery spacer A; the battery spacer A has the charging circuit wherein a coil 20 is arranged on the circumferential side of the secondary battery in loaded state coaxially therewith, and power which is generated inductively in the coil 20 by electromagnetic induction action is used for charging the secondary battery 1 through rectifying the power; and a positive terminal and a negative terminal each being connected with each of a positive terminal and a negative terminal each locating at each of both ends of the secondary battery 1, are each formed at each of both exterior ends of the battery spacer A. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a battery spacer having a built-in charging circuit.

  The following Patent Documents 1 and 2 disclose structures that are used as single 1 type cylindrical batteries and single 2 type cylindrical batteries by attaching a cylindrical spacer to the AA cylindrical battery.

Patent Document 3 below describes a cylindrical secondary battery A in which a secondary coil 2 and a secondary battery 3 are incorporated for charging when described with reference to the reference 3. At least the secondary coil 2, the secondary battery 3, and the charging circuit 4 are disposed inside the insulating case 1 that is approximately the same size as a general-purpose dry battery, and a positive terminal 1 a is projected from one end of the case 1. A non-contact type rechargeable battery A is provided in which a negative terminal 1b is provided at the other end and a secondary coil 2 is provided at least in the middle part of the case 1. The charger main body 5 having a cylindrical portion 5a that opens upward is a charger B in which at least a primary coil 6, an oscillation circuit 7, and a rectifier circuit 8 built in the cylindrical portion 5a are arranged. As a result, it can be used for dry batteries, and when charging it, it can be charged simply by placing the electrode in the cylindrical part of the charger without worrying about it, and it can be charged extremely easily regardless of the battery size. A non-contact type rechargeable battery A and its charger B are disclosed.
No.58-661 No. 54-44730 JP 2005-117748

  In the above-mentioned document 3, the non-contact type rechargeable battery A includes a charging circuit and a secondary coil. If the application requires a plurality of batteries, only the necessary number of non-contact type rechargeable batteries A can be used. The rechargeable battery A is necessary, and such a battery includes a charging circuit and a secondary coil, which increases the cost and imposes a burden on the user.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a low-cost structure even in a contactless rechargeable battery including a charging circuit and a secondary coil. To do.

  The present invention is a cylindrical battery spacer in which a cylindrical secondary battery is detachably mounted through an opening and has a built-in charging circuit, wherein the secondary battery is attached to the battery spacer, The secondary battery is housed in a substantially coaxial positional relationship, and the diameter of the secondary battery is smaller than the diameter of the battery spacer, and the central axis is the same on the outer peripheral side of the secondary battery in a mounted state. A coil is arranged, a power circuit induced by electromagnetic induction action in the coil is rectified, and a charging circuit for charging the secondary battery is built in, positive and negative terminals located at both ends of the secondary battery, The positive and negative terminals that are electrically connected are provided at both outer ends.

  In addition, the battery spacer has an outer size of an AA battery, and the secondary battery has an outer size of an AA battery or an AAA battery.

    In the present invention, it is a cylindrical battery spacer in which a cylindrical rechargeable battery is detachably mounted through an opening and a charging circuit is incorporated. Therefore, even when a plurality of rechargeable batteries are required, a smaller number of battery spacers than the required number are prepared, and the rechargeable batteries are mounted and charged. By repeating such charging, the required number of rechargeable batteries can be charged using a smaller number of battery spacers than the required number, so that a low-cost battery spacer and charging system can be obtained.

  Also, the battery spacer itself is cylindrical, and if the rechargeable battery is attached to an electronic device that can be used, the battery spacer can be used as a battery with the rechargeable battery attached. Can be supplied.

  This embodiment will be described with reference to the drawings. The battery spacer A has the shape of the cylindrical body 10 so that the AA cylindrical secondary battery 1 can be used as an AA battery. As such a secondary battery 1, a Ni-Cd battery, a Ni-MH battery, etc. can be utilized. In addition, the battery spacer A can be used as a single-cell battery by appropriately changing the size of the single-cell cylindrical secondary battery 1.

  The cylindrical body 10 is made of a resin material and includes an outer peripheral surface body 11 that is an outer peripheral surface, an upper surface body 12 that is an upper surface of a disk type, and a lower surface body 13 that is a lower surface of the disk type.

The upper surface body 12 is provided with a cylindrical positive electrode terminal 12+ made of a metal material by providing an opening at the outer center portion,
The disk-shaped metal plate 12P is stored in the storage space 12S on the back surface of the upper surface body 12 with the central portion of the disk-shaped metal plate 12P serving as a positive electrode terminal 12+ processed into a convex cylindrical shape.

The lower surface body 13 is provided with a negative electrode terminal 13-made of a metal material by providing an opening in the outer central portion.
Here, the negative electrode terminal body 13P is a negative electrode terminal 13- processed into a convex cylindrical shape at the center of the disk-shaped metal plate, and the negative electrode terminal 13P is attached to the inner side with the secondary battery 1 attached. A negative electrode elastic piece 13I is provided on the terminal 1 so that it can be pressed. The negative electrode terminal body 13P is stored in the storage space 13S on the back surface of the lower surface body 13.

    The battery spacer A is detachably mounted on the secondary battery 1 through the opening 10open on the side surface of the cylindrical body 10. The opening 10open is positioned at the approximate center in the vertical direction of the cylindrical body 10 and opens approximately half in the circumferential direction (see FIG. 1C). Inside the opening 10open, a battery holding part 10H having a semi-cylindrical shape along the outer periphery of the secondary battery 1 is provided. An upper end plate 10U is provided at the upper end of the battery holding part 10H so as to close the upper end of the semi-cylindrical battery holding part 10H. The secondary battery 1 is mounted and stored in a state of being substantially coaxial with the battery spacer A while being held by the battery holding portion 10H.

    The upper end plate 10U is provided with an internal positive terminal 15+ penetrating the upper end plate 10U in contact with the convex positive terminal 1+ of the mounted secondary battery 1. The disc-shaped metal plate 12P including the internal plus terminal 15+ and the positive terminal 12+ is electrically connected by a lead wire. In FIG. 1, the lead wire is indicated by a dotted line.

    Moreover, it has the shape of the inner wall 10I which can ensure the attachment / detachment space 10S so that the secondary battery 1 can be attached or detached to the battery holding part 10H of the spacer A for batteries. In FIG. 1B, the secondary battery 1 is mounted by moving as shown by the arrow from the state indicated by the dotted line.

    The diameter of the secondary battery 1 is smaller than the diameter of the battery spacer A, so that the secondary coil 20 having the same central axis can be arranged on the outer peripheral side of the secondary battery 1 in a mounted state. A secondary coil storage chamber 10L is provided as a ring shape.

    As shown in the circuit diagram of FIG. 2, the power of the electromagnetically induced secondary coil 20 is rectified by the diode Di and output to the charge control circuit 21, as will be described later. The secondary battery 1 is charged by the output from the charge control circuit 21.

    The electronic elements such as the diode Di and the resistor R constituting the charge control circuit 21 are mounted on the printed circuit board 22, and the printed circuit board 22 is connected to the battery holding portion 10H and the outer peripheral wall of the cylindrical body 10. Is stored in a space S formed between the two. The charging control circuit 21 is provided with a resistor R so that it can be charged with a small current. In addition, when the voltage between the terminals of the secondary battery 1 at the time of charging is equal to or higher than a predetermined value (for example, 1.8 V), the charging control circuit 21 has a function of monitoring the voltage between the terminals so that the charging can be stopped, A switching mechanism for stopping charging may be provided. Thereby, even if the primary battery which is a dry battery is mistakenly attached to the battery spacer A, since the voltage between the terminals exceeds a predetermined value during charging, the charging is stopped.

    A charger for charging the battery spacer A to which the secondary battery 1 is mounted will be described below.

    As shown in FIG. 3, the upper surface of the charger C <b> 1 is substantially planar, and the primary coil 30 </ b> C <b> 1 is set at the lower portion. The primary coil 30C1 is supplied with alternating current or pulsating current according to a well-known technique, and the battery spacer A placed on the upper surface of the charger C1 is connected to the secondary coil 20 of the battery spacer A by electromagnetic induction. Then, electric power is induced and the secondary battery 1 is charged.

    As shown in FIG. 4, the charger C2 may be provided with a recess 21 in which the battery spacer A can be accommodated, and a secondary coil 20 'may be provided on the outer periphery of the recess.

  Further, when the battery spacer A with the secondary battery 1 is attached to an electronic device and used as a power source, the output of the positive terminal 1+ and the negative terminal 1- of the secondary battery 1 is used as the positive terminal of the battery spacer A. 12+, can be taken out from the negative terminal 13-.

  In addition, in the battery spacer A, the opening 10open is provided on the side surface, but instead, the opening is not provided on the side surface, and the negative electrode terminal body 13P in FIG. The secondary battery 1 may be detachable from the battery spacer A by using this portion as an opening.

FIG. 2A is a perspective view, FIG. 2B is a sectional view taken along line BB ′ in FIG. 4A, and FIG. 2C is a sectional view taken along line AA ′ in FIG. FIG. It is a circuit diagram of the Example of this invention. It is a figure which shows the charger of the Example of this invention, (a) is a perspective view, (b) is sectional drawing. It is a figure which shows the other charger of the Example of this invention, (a) is a perspective view, (b) is sectional drawing.

Explanation of symbols

1 Secondary battery
1+ Positive terminal 1- Negative terminal
A Battery spacer 10 Cylindrical body 10 Open Opening 12+ Positive terminal 13- Negative terminal 13I Negative elastic piece 15+ Internal positive terminal

Claims (2)

A cylindrical battery spacer, in which a cylindrical secondary battery is detachably mounted through an opening, and has a built-in charging circuit,
The secondary battery is housed in the battery spacer in a positional relationship that is substantially coaxial,
A diameter of the secondary battery is smaller than a diameter of the battery spacer, and a coil having the same central axis is disposed on the outer peripheral side of the secondary battery in a mounted state,
A built-in charging circuit for rectifying the electric power induced by electromagnetic induction in the coil and charging the secondary battery;
A battery spacer having a built-in charging circuit, wherein positive and negative terminals located at both ends of the secondary battery and positive and negative terminals electrically connected to each other are provided at both outer ends.   2. The battery with a built-in charging circuit according to claim 1, wherein the battery spacer has a size of an AA battery, and the secondary battery has a size of an AA or AAA battery. spacer.

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