KR100736387B1 - Charging System for Mobile Devices - Google Patents

Abstract

The charging system for a portable device of the present invention is supplied with a charging power source through a contact or non-contact method from a flat panel power terminal having a matrix form for supplying power for charging, and the power source is applied in a predetermined direction. A charging system is connected to two electrodes of a rechargeable battery by a circuit for energizing.

The present invention has a power supply unit having a planar mounting surface and arranged in a predetermined pattern on the mounting surface and having a plurality of flat power terminals, and a planar contact surface opposite the mounting surface and arranged in a predetermined pattern on the contact surface. It is configured to include a portable device having a rechargeable battery having a plurality of charging terminals.

Therefore, the present invention can be charged in a state in which the mobile device is placed in any position on the power supply, it provides an effect that can be easily configured and simple to use.

Description

Charging system for mobile devices

1; A diagram of a capacitively coupled contactless charging system for a conventional portable device.

2; Detailed view of the power supply side of a conventional capacitively coupled charging system.

3; Configuration diagram of a charging system for a portable device of the direct current contact charging method according to an embodiment of the present invention.

4; Exemplary arrangement of the power terminal and the charging terminal of the charging system according to an embodiment of the present invention.

5; Another configuration of the direct current contact charging system according to an embodiment of the present invention.

6; Configuration diagram of the AC contact charging system according to another embodiment of the present invention.

7; Configuration diagram of the AC capacitive coupling charging system according to another embodiment of the present invention.

8; A diagram showing a situation of charging real mobile devices through the charging system of the present invention.

<Description of Symbols for Major Parts of Drawings>

100: power supply

110: voltage converter 120: frequency converter

130: control unit

200: mobile device

210: rectifier 220: voltage converter

230: rechargeable battery 240: load

M: Power Pad N: Charging Pad

300: power supply unit 310: power supply terminal

400: mobile device 410: rectifier device

X: Power terminal Y: Charging terminal

The present invention relates to the charging of a mobile device, and in detail, a charging power source is applied through a contact or non-contact method from a flat panel power terminal having a matrix type to supply a power source for charging the power supply. The present invention provides a charging system for a portable device that does not require separate control of a power supply process by connecting and charging a positive electrode of a rechargeable battery by a circuit for energizing in a constant direction.

As technology is advanced and advanced, portable devices such as mobile phones, PDAs, MP3 players, GPS, and laptops are becoming more diverse in appearance and function, and their use is increasing.

These portable devices are equipped with a rechargeable battery, which is convenient to use anytime, anywhere regardless of time and place when the battery is charged. To charge the mobile device's rechargeable battery, you need to connect it to the adapter attached to each mobile device, or insert the mobile device's battery into a dedicated charging device such as a cradle, and use it after charging. There is a need for a way to do this.

1 is a configuration diagram of a capacitively coupled non-contact charging system for a conventional portable device, Figure 2 is a detailed view of the power supply side of a conventional capacitively coupled charging system.

Looking at the capacitive coupling type non-contact charging system as shown, the power supply unit 100 is composed of a voltage converter 110, a frequency converter 120, a control unit 130, a power pad (M), and the like (portable device) The 200 includes a charging pad N, a rectifier 210, a voltage converter 220, a rechargeable battery 230, a load 240, and the like.

The capacitive coupling non-contact charging system of the capacitive coupling method, the plurality of power pads (M) of the power supply unit 100 for applying the charging power and the charging pad (N) of the portable device 200 is a capacitive coupling method in a non-contact state. According to, the AC power for charging of the power supply unit 100 is applied to the portable device 200 side, the AC power thus applied is rectified in the rectifier 210, converted in the voltage converter 220, and then the rechargeable battery ( 230 is a charging system using the charging method.

In addition to the non-contact charging system, a contact charging system for charging the power pad M of the power supply unit 100 and the charging pad N of the portable device 200 by direct contact is also proposed.

However, such a capacitive coupling or contact charging system should be provided with a control unit 130 for controlling the polarity of the power applied to the power pads (M) of the power supply unit 100, as shown.

That is, two charging pads (N) on the side of the mobile device 200 must be supplied with AC power so that the AC power of the intact form, that is, the positive potential and the negative potential are alternately changed and the two terminals of the AC correspond to opposite polarities so as to allow rectification. To this end, the control unit 130 is required to check the opposing state of the two charging pads (N) and the power pads (M) of the portable device 200 to control the application state.

However, such a control not only has a complicated control process, but also has a lot of constraints on the design of the charging system, which is required to perform the control, and there is a problem that the configuration is complicated and the cost is increased.

Accordingly, the present invention devised to solve this problem is to receive the charging power from a matrix-like flat panel power supply for supplying the charging power through a contact or non-contact method, the power supply The present invention provides a charging system for a portable device, by which both electrodes of a rechargeable battery are connected and charged by a circuit for energizing in a constant direction, so that control of a power supply process is not required.

In addition, an object of the present invention for this purpose, a power supply having a mounting surface and arranged in a predetermined pattern on the mounting surface and having a plurality of flat power terminals, and a plurality of contact surfaces facing the mounting surface and arranged on the contact surface In the charging system consisting of a rechargeable battery having a charging terminal group,

The plurality of flat power terminal is arranged with a gap, the power is supplied so that the polarity is properly mixed arrangement,

The charging terminal group includes at least one charging terminal facing the end area of the flat power supply terminal, and each charging terminal is connected to the rechargeable battery via a rectifying element, and the rectifying element connected in the forward direction is the positive electrode of the rechargeable battery. The rectifier device connected in the reverse direction is connected to the negative electrode of the rechargeable battery, to provide a charging system for forming a charging circuit irrespective of the position and direction in which the rechargeable battery is placed on the mounting surface of the power supply.

In addition, in such a charging system, among the charging terminals, one terminal of another rectifying element is commonly connected in the reverse direction and the other end is connected to the negative electrode of the rechargeable battery, and the rectifying element is connected in the reverse direction to the charging terminal to which the rectifying element is connected in the forward direction. The terminal provides a technology for a charging system further comprising a wiring circuit such that one end of another rectifying element is commonly connected in the forward direction and the other end thereof is connected to the positive electrode of the rechargeable battery.

In addition, when the power source is an alternating current, the charging terminal is formed of a flat-type charging terminal having a predetermined area exposed to the contact surface, wherein at least one side of the flat-type power supply terminal and the flat-type charging terminal has a dielectric constant Covered by, to provide a technology for a charging system to form a charging circuit by the capacitive coupling between the flat power supply terminal and the flat charging terminal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The charging system for a portable device of the present invention may be applied to a direct current contact charging method, an AC contact charging method, an AC capacitive coupling charging method, and an operation process for each method will be described later.

3 is a configuration diagram of a charging system for a portable device of a direct current contact type charging method according to an embodiment of the present invention, (a) shows an overall conceptual diagram, and (b) shows a planar arrangement of power terminals of a power supply unit, respectively. Indicates.

As shown in the drawing, the charging system of the present embodiment includes a power supply unit 300 having a flat mounting surface and having a plurality of flat power terminals X arranged in a predetermined pattern on the mounting surface and opposed to the mounting surface. And a portable device 400 having a flat contact surface and having a rechargeable battery having a plurality of charging terminals arranged in a predetermined pattern on the contact surface.

Preferably, the mounting surface and the contact surface may be formed in a planar shape, but may be formed of a curved surface or other embossing surface that is opposite to each other within the scope of the technical idea of the present invention.

The power supply unit 300 is arranged in a form such as a power supply stage 310 for converting and outputting the input power from the input power to the charging power, and a plurality of flat power supplies connected to the output lines of the power supply terminal 310. Terminals X are provided.

Here, the flat power supply terminal is not necessarily limited to a flat surface, and means a shape exposed to a certain area on a mounting surface and may specifically include a curved surface or an embossed surface.

First, in the DC contact charging method as shown in FIG. 3, the power supply stage 310 rectifies the input AC power, smoothes and stabilizes the pulsation (ripple) and outputs the same. Two lines of the DC charging power are applied to a plurality of flat power supply terminals X arranged in a matrix form on a mounting surface.

At this time, it is preferable that the power terminals of the (+) and (-) poles are alternately connected to the chess board by alternately connecting the (+) line and the (-) line to the plurality of power terminals (X). However, as will be understood through the operation of the present charging system to be described later, the positive and negative electrodes may be appropriately mixed to some extent without necessarily being alternately connected.

In this embodiment, a charging circuit is configured by direct contact between the power supply terminal X and the charging terminal Y, and is charged in the rechargeable battery of the portable device 400 from the power supply of the power supply unit 300.

In the portable device 400, a plurality of charging terminals Y are also densely arranged in a matrix form on a planar contact surface so as to contact the power terminals X on the mounting surface of the power supply terminal 310.

As shown, in the present embodiment, a plurality of power terminals X having a quadrangular shape is arranged in a matrix form, but these power terminals X are formed in various shapes such as a circle and a polygon, and then in various geometric shapes. It is possible to arrange, and the charging terminal (Y) of the portable device 400 side can also be formed in various forms and arranged in various ways in contact with the power terminal (X).

In this case, even if the portable device 400 is placed at an arbitrary rotational angle at an arbitrary two-dimensional position on the mounting surface of the power supply terminal 310, it is preferable to arrange such that the following conditions are satisfied. (Hereinafter referred to as 'contact placement conditions')

1) At least one charging terminal Y on the side of the portable device 400 is in contact with a power terminal X corresponding to one pole of the power terminal X in a direction in which the current direction coincides.

2) At least one charging terminal (Y) of the portable device 400 side is in contact with the power supply terminal (X) corresponding to the other pole of the power supply terminal (X) in the same direction as the current direction.

3) The contact between the power supply terminal X of the power supply terminal 310 and the charging terminal Y of the mobile device 400 side between the positive electrode (+ pole) and the negative electrode (-pole), which are the two poles of the power terminal (X) No short circuit

Rectifiers 410 are connected to the rear ends of the charge terminals Y, respectively. In the present embodiment, one rectifying element 410 is connected to each charging terminal Y line, and a diode may be generally used as the rectifying element 410. However, it is natural that various kinds of electronic devices including semiconductor switching devices such as bipolar TR, field effect TR, SCR, etc. can be used as the rectifying device as long as they have a rectifying function capable of flowing charge in one direction.

The charging system collects a line of rectifier elements 410 connected in the forward direction and is connected to the positive electrode (+ pole) of the rechargeable battery of the mobile device 400, and collects the lines of the rectifier elements 410 connected in the reverse direction to the negative electrode of the rechargeable battery ( -Pole).

Hereinafter, the forward direction means that the rectifier element is connected to be energized in the direction of the rechargeable battery from the power supply terminal, and the reverse direction is defined to mean that the rectifier element is connected to be energized in the direction of the power terminal from the rechargeable battery.

As shown, the rectifier element 410 used in the present embodiment is connected in a predetermined direction, and diodes are connected in the forward direction to the charging terminals Y01, Y03, Y05, Y07, and Y09, respectively, and the charging terminal Y02 , Y04, Y06, and Y08 have diodes connected in reverse directions, respectively.

Meanwhile, as illustrated, a positive line of the power supply terminal 310 is connected to the power terminals X0101, X0103, X0202, X0204, and X0201, X0104, X0104, X0201, X0203 ,,, is connected with (-) line. Therefore, in this case, the charging terminals Y01 to Y09 can obtain the following results.

Power terminal Charging terminal Energized state X0102 Y01 ×: fire Y02 ○: energized Y03 ×: fire X0103 Y04 ×: fire Y05 ○: energized Y06 ×: No fire X0104 Y07 ×: No fire Y08 ○: energized Y09 ×: fire

Therefore, the rectifying element 410 can be used as a positive electrode (+ pole, 411) to charge the rechargeable battery of the mobile device 400 by collecting the line connected in the forward direction, the rectifying element 410 for charging by collecting the line connected in the reverse direction It can be used as a cathode (-pole) 412.

In addition, the positive electrode (+ pole, 411) is connected to the positive electrode 413 of the rechargeable battery mounted in the portable device 400, the negative electrode (-pole, 412) is connected to the negative electrode 414 of the rechargeable battery mounted in the portable device 400, respectively Therefore, even if the power supply terminal X of the power supply unit 300 and the charging terminal Y of the portable device 400 are matched in any state, charging is possible.

At this time, the charging terminal (Y) is configured more densely than the corresponding power terminal (X), but per one area of each power terminal (X), so that at least two charging terminals of different polarity is connected to the mounting surface of the power supply unit 300 It is desirable to allow the charging circuit to be configured even when the rechargeable battery of the mobile device is placed at any position. Here, at least one charging terminal (Y) of at least two or more charging terminals (Y) is connected to the positive electrode of the rechargeable battery via the rectifying element 410 connected in the forward direction, the other at least one charging terminal (Y) is It is connected to the negative electrode of the rechargeable battery via the rectifying element 410 connected in the reverse direction.

In addition, it is preferable that the charging terminal group including at least two pairs of charging terminals Y having different polarities is formed in two or more groups so as to match a plurality of power terminals having different polarities. In addition, the maximum width of the tip of the charging terminal (Y) is preferably smaller than the gap between the flat power supply terminal (X) so that a short does not occur between the power supply terminal (X) by the charging terminal (Y).

4 is an exemplary diagram of mutual arrangement between a power terminal and a charging terminal according to an embodiment of the present invention.

As shown, the rectangular power supply terminals (X) are arranged in a plane with the polarity alternately alternately, and each of the charging terminals (Y) is indicated by a circle illustrating the polarity, and the conditions described above An example of satisfying the contact arrangement condition is shown.

As shown in FIG. 4 (a), the plurality of charging terminal groups may be arranged in succession to each other, but as shown in FIG.

5 is another configuration diagram of the DC contact charging system, (a) shows the overall conceptual diagram, (b) shows the planar arrangement of the power terminals of the power supply unit, respectively.

5 has the same configuration as the embodiment of FIG. 3, but differs in that only two rectifying elements 410 are simultaneously connected to each of the charging terminal Y lines in the forward and reverse directions.

In the present embodiment, at least two or more charging terminals (Y) are connected to each of the two rectifying elements 410, one in the forward direction and the other in common in the reverse direction and the other end of the rectifying element 410 connected in the forward direction is The other end of the rectifier 410 connected to the positive electrode of the rechargeable battery and connected in the reverse direction is connected to the negative electrode of the rechargeable battery.

Therefore, in this embodiment, all the charging terminal (Y) is energized, but the charging terminals Y01, Y02, Y03, Y07, Y08 is energized by the rectifying elements 410 connected in the reverse direction, charging terminals Y04, Y05, Y06 Is energized by rectifying elements 410 connected in the forward direction, and thus, a positive electrode (+ pole, 411) and a negative electrode (− pole, 412) are formed as described in FIG. The principle of being able to charge the rechargeable battery is as described above.

However, in the embodiment of FIG. 5, unlike the case of FIG. 3, a separate polarity is not given to the charging terminal (Y), so that at least two charging terminals having different polarities must be connected per area of each power terminal (X). There is no need to do this, and since the charging circuit can be configured even if only one charging terminal Y is connected to each power supply terminal X, there is an advantage that the freedom in designing the product is further widened.

Therefore, in the embodiment of FIG. 5, each of the charging terminal groups may include at least two charging terminals Y and may be formed in at least two groups so as to match the plurality of power terminals X having different polarities.

6 is a configuration diagram of an AC contact charging system according to another embodiment of the present invention, (a) shows an overall conceptual diagram, and (b) shows a planar arrangement of power terminals of a power supply unit, respectively.

In this embodiment, two output lines of the power supply terminal 310 are configured to be applied to the plurality of power terminals X.

Therefore, at any time t time, power terminals X0101, X0103 ,,,, X0202, X0204 ,, are high potentials (+ potential), and power terminals X0102, X0104 ,,,, X0201, X0203 ,, If it is a low potential (-potential), it is in the operating state as in the embodiment of FIG. 3, and can be charged using the positive electrode (+ pole) and the negative electrode (-pole) generated at this time as described above.

However, in this embodiment, since AC is used as the power source for charging, the polarity (potential) of the power supply terminals X is changed at t + 1 time, but the positive electrode (+ pole) of the rechargeable battery is formed by configuring the circuit of the rectifying element as shown in FIG. ) And the negative (-pole) terminals are still supplied with positive and negative potentials, respectively.

In addition, it is more preferable that the AC contact type charging system is configured such that two rectifying elements 410 are connected to each of the charging terminals Y in both the forward and reverse directions.

7 is a configuration diagram of an AC capacitive coupling charging system according to another embodiment of the present invention, (a) shows an overall conceptual diagram, and (b) shows a planar arrangement of power terminals of a power supply unit, respectively.

As shown in FIG. 6, although the present embodiment applies alternating current to the charging power source as shown in FIG. 6, there is a difference in that the charging circuit is configured by the capacitive coupling method instead of the direct contact between the conductor terminals. Basic operation principle except this is as described in the embodiment of FIG.

The present embodiment configures a charging circuit using a capacitive coupling method, and unlike the embodiment of FIGS. 3 and 5 by direct contact between terminals, all the former X and the portable device of the power supply unit 300 are connected. A dielectric film having a dielectric constant is formed between the charging terminals Y of the 400 and an AC power is applied to the portable device 400 as a charging power output from the power supply terminal 310, thereby charging the circuit in a capacitive coupling manner. Is composed.

Here, the tip of the charging terminal (Y) is preferably formed in a flat plate having a certain cross-sectional area so that a capacitance is formed between the power supply terminal (X) and the charging terminal (Y). In addition, the meaning of a flat plate type is not necessarily limited to a flat surface here, as long as it has an appropriate capacitance as opposed to the flat plate type power supply terminal X.

The dielectric film may be formed on one side or both sides of the planar power supply terminal X and the charging terminal Y.

In the present embodiment, a plurality of power terminals X having a rectangular shape is arranged in a matrix, but as described above, the power terminals X of the power supply unit 300 or the charging terminals Y of the portable device 400 are arranged. It is possible to form them in various forms and then arrange them in various geometric forms.

In addition, even in the present embodiment, even if the portable device 400 is placed at any rotational angle in any two-dimensional position on the mounting surface of the power supply stage 310, capacitive coupling is efficiently performed to enable charging, as follows. It is preferable to arrange so that the same conditions are satisfied (hereinafter, referred to as 'capacitive coupling arrangement conditions').

1) A sufficient number of mobile terminal 400 side charging terminals (Y) is disposed in the power supply terminals (X) of the power supply unit 300 corresponding to one pole of the alternating current to form a capacitive coupling in the forward direction.

2) A sufficient number of charging terminals (Y) of the portable device (400) side is disposed at the power terminals (X) of the power supply unit 300 corresponding to the other pole of the AC to form a capacitive coupling in the reverse direction.

3) The charging terminals Y on the side of the portable device 400, which are located across two poles of alternating current by the power terminals X and whose capacitive coupling function is degraded, are absent or negligible.

The charging circuit is formed by capacitive coupling in the same manner as described above. The principle of charging the rechargeable battery of the mobile device 400 is as described above.

In addition, the AC capacitive coupling charging system, as shown in FIG. 5, is more preferably configured such that two rectifying elements 410 are connected to each of the charging terminals Y in both the forward and reverse directions.

In this embodiment, the power supply terminal 310 of the power supply unit 300 converts the AC power input to match the size of the voltage or current to be charged, to reduce the resistance due to the non-contact capacitive coupling general AC power It is desirable to have a function such as raising the frequency.

In addition, as another embodiment of the present invention, the charging system may be configured by an inductive coupling method of constructing a coil (Inductor) instead of capacitive coupling to a plurality of power terminals (X) and charging terminals (Y). . In this case, the power supply terminal X and the charging terminal Y each have a terminal portion formed with an inductive coil.

8 is a diagram illustrating a process of charging actual mobile devices through the charging system of the present invention.

As shown in the figure, various portable devices are placed on the power supply unit 300 and can be charged without being restricted by the direction in which they are placed.

In addition, in the case of direct current, various constant voltage circuits and overvoltage protection circuits may be added to the power supply unit 300 so that the charging power formed in the power supply terminal 310 may be more stably and efficiently charged. A circuit may be added to protect the power supply unit 300 from static electricity. In addition, it is natural to those skilled in the art to add a smoothing circuit, a stabilization circuit, an overcharge prevention circuit, and the like to the input side of the rechargeable battery of the portable device 400 as necessary.

In addition, in the connection of the power supply terminals (X), it is preferable to alternately connect the two terminals of the power supply terminal 310, but as can be seen through the above-described operating principle, the positive electrode (+ pole) to the mobile device 400 Based on the technical concept of the present invention, if the negative electrode (-pole) can be connected to form a partial polarity to form one polarity, or can be connected to mix the two polarities without a certain form, such as It is possible to carry out variously.

In addition, the rectifier circuit may be configured integrally with the rechargeable battery, but can be separated in the form of an adapter, so that the rechargeable battery of the portable device can be charged from a cradle as in the prior art, and the adapter can be used to use the charging system of the present invention. You can also do it.

As described above, the present invention provides a convenience of use because it can be charged even if a plurality of mobile devices are placed on a charging surface for charging.

In addition, in the technical configuration, a passive element such as a diode can be used, so that a control unit is unnecessary when the charging power is applied, thereby reducing the production cost, and even if the exposed both electrode terminals of the rechargeable battery are shorted to the conductor, discharge does not occur. Since the rectifier circuit is operated so as to provide an effect that greatly improves the portable safety.

Claims (8)

The battery pack includes a power supply unit having a mounting surface and arranged in a predetermined pattern on the mounting surface and having a plurality of flat power terminals, and a rechargeable battery having a plurality of charging terminal groups arranged on the contact surface and having a contact surface facing the mounting surface. In the charging system, The plurality of power terminals are arranged with a gap, the power is supplied so that the power terminals of different polarity are mixed and arranged, The charging terminal group includes at least one charging terminal facing the end area of the power terminal, each charging terminal is connected to the rechargeable battery via a rectifying element, the rectifying element connected in the forward direction is connected to the positive electrode of the rechargeable battery And a rectifying element connected in a reverse direction to be connected to a negative electrode of the rechargeable battery, such that a charging circuit is formed regardless of the position and direction in which the rechargeable battery is placed on the mounting surface of the power supply unit. The method of claim 1, The charging terminal group includes a plurality of charging terminals that are densely arranged such that at least two or more contact with the end area of the flat power terminal, the at least one charging terminal is connected to the rectifier element in the forward direction, the other at least one Charging system in which charging terminals are connected in reverse direction. The method of claim 1, In each of the charging terminals, one terminal of the other rectifying element is commonly connected in the reverse direction to the charging terminal in which the rectifying element is connected in the forward direction, and the other end is connected to the negative electrode of the rechargeable battery, and another charging station in the charging terminal in which the rectifying element is connected in the reverse direction And a wiring circuit having one end thereof commonly connected in the forward direction and the other end thereof connected to the positive electrode of the rechargeable battery. The charging system according to any one of claims 1 to 3, wherein the charging terminal has a maximum width of a cross section exposed on the contact surface smaller than a minimum gap between the plurality of flat power terminals. The method according to any one of claims 1 to 3, The plurality of charging terminal groups are arranged in succession or spaced so as to be matched to two or more power terminals of different polarity. The method according to any one of claims 1 to 3, The power source is an AC power source, The charging terminal is formed as a flat plate charging terminal having a predetermined cross-section exposed to the contact surface, and at least one side of the flat power supply terminal and the flat charging terminal is covered with a dielectric film having a dielectric constant, the flat power supply And a charging circuit formed by capacitive coupling between a terminal and the flat charging terminal. The charging system of claim 6, wherein the charging terminal has a maximum width of a cross section exposed on the contact surface smaller than a minimum gap between the plurality of flat power terminals. 7. The charging system of claim 6, wherein the plurality of charging terminal groups are arranged in succession or spaced apart to match two or more power terminals having different polarities.

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