NL1010026C2 - AC / DC rechargeable mobile phone battery element. - Google Patents

Description

AC / DC rechargeable mobile phone battery element.

This creation is a kind of "AC / DC rechargeable mobile phone battery element", in particular a mobile phone battery element which can be charged directly by the electric mains or charged by a conventional DC charger available on the market.

To charge a traditional mobile phone battery element to recharge used energy, a charger must be used. For this, the 10 user needs to buy an extra charger and pay more money. In addition, the charger is much too big and too heavy and inconvenient to carry.

Because of these drawbacks, the manufacturers have improved this. As shown in Figure 1, the rechargeable battery element is composed of an envelope 10 and a charger and so on. A concave box 13 with two notches on its left and right sides is placed on the panel 12 of the casing 10 to hold a reversible and positionable plug 15. The plug 15 has two forwardly extending electrical insertion members 16 and a conductive support shaft 17 transversely connecting the electrical insertion members 16. Left and right notched guide plates 18 are installed on a circuit board 11 of the charger to grip the conductive support shaft 17 of the plug 15. Subsequently, electric mains current (AC) is supplied to the charger through the electric insertion members 16, conductive support shaft 17 and conductive plate 18 of the plug 15. But that design of the conductive support shaft 17 will increase current resistance; in addition, the contacts between the conductive support shaft 17 and the conductive plates 18 of the circuit plate 11 are in fast coupling form, which cannot be properly contacted.

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In addition, when the plug 15 reverses and locates as well as retracts and sets, the conductive support shaft 17 is not disengaged from the guide plate 18, it always causes wear and results in lower conductivity. In addition, losses always occur as the positioning of the conductive support shaft 17 of the plug 15 is based on the rigid assembly of the circuit board 11 and the support of the conductive plate 18. This is not an ideal structure for operation. 10 Another shortcoming is: plug 15 is the AC input jack of the charger. After rectification, filtering and stabilization, the AC is converted into DC to drive the transformer and the charging circuit through a driving circuit built up of transistors. The DC 15 is used on the one hand to charge the rechargeable battery element 19, and on the other hand supplies power to the mobile phone through the DC output terminals of the panel 12. When the cells 19 are fully charged, the charger cannot automatically switch the driven circuit 20 turn off. This will result in energy loss and; shortening the life of the circuit and the battery - elements 19. Another problem is that there is no indicator, for full charge and there is no overheating-1 protection for the cells 19.

1 25 Because of these drawbacks of the existing rechargeable mobile phone battery element, I looked for a new way to solve these problems and I finally completed the creation "AC / DC rechargeable mobile phone battery element".

The purpose of this creation is to provide an "AC / DC rechargeable mobile phone battery element". Its plug plastic axis is held between the panel's concave casing and the rear casing body, whereby the electrical insertion part of the plug presses well on the elastic conductive parts of the circuit board of the charger. When the plug is withdrawn and tightened, the electrical H 010 o? * 3 insertion parts are disconnected from the elastic guide parts. It can be quickly and permanently assembled into one whole. It is durable and its conductive quality has been improved.

5 Another object of this creation is to provide an "AC / DC rechargeable mobile phone battery element". A reversible and positionable plug is placed on the back of the casing body, allowing the rechargeable battery element to be charged directly from the electrical mains without disconnection from the mobile phone.

The third object of the creation is to provide an "AC / DC rechargeable mobile phone battery element". A dual color LED, a thermally sensitive resistor and the rechargeable battery elements are connected in parallel across the charging circuit. When the charging voltage is lower than the reference voltage, the red light of the dual color LED lights up. When the cells are fully charged, the green light of the dual color LED lights up and a low potential is output to an optical coupler of a linear IC to stop charging. Accordingly, energy is saved and the life of the battery element is extended.

For the purpose of understanding, a practical example with figures below will be discussed in detail to explain how the above purpose can be achieved by using technological measures.

Figure 1 is an exploded view of a conventional rechargeable mobile phone battery element,

Figure 2 shows my creation.

Figure 3 is an exploded view of Figure 2.

Figure 4 is a perspective view showing the plug (in Figure 2) inverted and positioned.

Figure 5 is a sectional view showing the plug (in at 0 f002 6 4 figure 4) which has been inverted and placed.

Figure 6 is a side view of Figure 5.

Figure 7 shows the plug in Figure 6 that has been retracted and tightened.

Figure 8 is a block diagram of the charger according to this creation.

Figure 9 is a circuit diagram of Figure 8.

Figure 10 is an embodiment of another practical example of the creation.

As shown in Figure 2, the creation "AC / DC rechargeable mobile phone battery element" is essentially a rechargeable mobile phone battery element that can be charged directly by the electrical power supply (generally AC 110-24 0 V ). A charger is mounted in an enclosure, and a concave cabinet space 22 is formed on the front of the panel 20 of the enclosure to hold the plug 30 (can be inverted and placed as well as retracted and secured) which is used for direct charging with net-20 power.

As shown in Figure 3, the envelope of the rechargeable battery element is constructed from the panel 20 and rear envelope body 21 by connecting it to a high frequency fusion connection. A concave cabinet space 22 is made on the front of the panel 20. Notches 25 are made in the rear ends of the left and right side walls 23, 24 of the concave cabinet 22, respectively, to fit the left and right sections of the plastic support shaft 32, 33 of 30 the plastic body 31 of the plug 30. The left and right electrical insertion parts 34, 35 of the plug pass through the plastic body 31 (longer on the front, shorter on the back). A pair of plastic support plates 26, 27 are placed on the inner side of the rear casing body opposite each other with one on the left, and the other on the right. The plastic support plates grip the support shaft »1010026 5 32, 33 of the plug with their notches 28 placed on the front end of the plates to allow the plug 30 to be reversed and positioned or retracted and secured around the shaft.

The charger circuit plate 50 and rechargeable battery row elements 67 are fixedly installed in the casing of the rechargeable battery element. Two elastic conductive parts 51, 52 extend from the circuit board 50 and are used as AC input terminals. The rear ends of the electrical insertion parts 34, 35 of the plug 30 are elastically pressed onto the parts 51, 52. Figures 4, 5, 6 show that the plug 30 is in the inverted and positioned position. The plastic body 31 of the plug 30 fits with the left and right walls 23, 24 of the concave box 22. The plastic support shaft 32, 33 is gripped and held by a support plate 26, 27 and its notches 25, 28 with the same material. This method can reduce electrical resistance, improve current conduction quality, as a result, the AC current can flow gradually into the charger through the electrical insertion parts 34, 35 of the plug 30 and the elastic conductive parts 51,. 52. In addition, it is durable and can be assembled quickly and permanently.

As shown in Figure 7, when the rechargeable battery element does not need to be charged, the plug can be retracted and secured in the concave cabinet space 22 of the panel 20, then the rear ends of the electrical insertion members 30, 34, 35 of the plug 30 from the elastic guide members 51, 52 of the circuit board 50.

As indicated in Figure 8, AC 110/240 V power enters the AC input terminal 60 of the rechargeable battery element, and then passes through the rectifying circuit 61, filter circuit 62, voltage stabilizing circuit 63, driving circuit 64 and charging circuit 65 to charge the rechargeable battery elements 67 p1 o 10 0 2 6 6. When using a commercially available charger, the charging current flows through the DC terminal 69 and elastic charging member 42 (as shown in Figure 3) in the rechargeable battery elements. When the 5 rechargeable cells are fully charged, the DC in the mobile phone can be switched through its DC output terminal 68 and the conductive part 40 as shown in Figure 3.

Referring to Figure 9: the AC-110 / 240V 10 power enters the AC input terminal 60 of the charger, then is rectified in DC current through a bridge-connected rectifier D1 of the rectifying circuit 61. The current limiting resistor R1 is used to limit the current within a certain range; the resistor R2 and the diode D2 are combined with the transistor Q1 to be used as a filter, and together with a Zener diode D3 in the voltage stabilizing circuit, they provide a comparative reference voltage for the overcurrent protection section in the driving circuit.

A switching circuit, which provides a correct voltage to control transistor Q2, is composed of a transistor Q1 and an optical coupler E1. The charging. bare battery elements 67 are charged by transformer T and charging circuit 65. The charging circuit 65 is connected to the output terminal of the secondary coil of the transformer. The following elements are connected in parallel in the charging circuit 65: a dual color LED, a capacitor E4 serially connected to a diode D4, and the rechargeable battery elements 67. By a Zener diode D5 and resistor R7, a linear IC E2 connected to the junction of capacitor C4 and diode D4 to provide a reference voltage. Another end of the linear IC E2 is connected to the intersection of the dual color LED to compare the charging voltage with the reference voltage.

; When the voltage is lower than the reference voltage (the> 1010026 7 potential on pin # 3 is lower than that of pin # 2), the driving circuit 64 is driven to operate, and the rechargeable battery elements 67 are charged by the transformer T and the charging circuit 65. At the same time, the dual color LED (refer to the left window 29 in Figure 3) lights up in red color, showing that it is charging. When the rechargeable battery elements are fully charged (the potential on pin # 2 is lower than that of pin # 3), the diode D4 becomes conductive 10 and the dual color LED lights up in green color. At the same time, a lower potential is output to the optical switch IC E1 of the linear IC E2 to cut the transistor Q2 and stop charging. As a result, energy is saved and the life of the circuit and battery elements is extended.

Before the rechargeable battery elements 67 are connected to the output terminals of the secondary side of the transformer T, two thermally sensitive resistors R10, R11 of an overheat protection circuit 66 are serially connected thereto. As the temperature inside the rechargeable battery element 67 rises, the resistance of the thermal sensitive resistors R10, R11 decreases correspondingly, providing overheating protection to stop charging of the rechargeable battery elements.

As shown in Figure 10, the concave cabinet 220 is placed on the back of the shell 210 to retain the plug 30 causing the rechargeable battery element to be charged by mains power without disconnecting it from the mobile phone.

In summary, the "AC / DC rechargeable mobile phone battery element" is durable and can be assembled quickly and fixed, its conductivity is greater than others, suitable for charging a mobile phone in standby mode, has indicators for displaying the charging conditions (charging or fully charged), charging can stop automatically, as a result, the b1 010 0 2 6 8 life of the circuits and the rechargeable battery elements is extended. It can meet all requirements in practice.

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1010026 9

Heaters 20 Panel 21 Rear Casing Body 22 Concave Cabinet 23 Side Wall 24 Side Wall 25 Notch 26 Support Plate 27 Support Plate 28 Notch 29 Light Window 210 Rear Casing Body 220 Concave Casing 30 Plug 31 Plastic Body 32 Support Shaft 33 Support Shaft 34 Electric Insertion Part 35 Electric Insertion Supply Part 40 Elastic Power Supply 40 Elastic Power Supply Elastic Charging Part 50 Circuit Board 51 Elastic Conductive Part 52 Elastic Conductive Part 60 AC Input Terminal 61 Rectifying Circuit 62 Filter Circuit 63 Voltage Stabilizing Circuit 64 Control Circuit 65 Charging Circuit 6 6 Overheat Protection Circuit 67 Rechargeable Battery 68 DC Output Terminal 69 DC Input Terminal

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Claims (4)

1. AC / DC rechargeable battery element for a mobile phone, in particular a mobile phone battery element, rechargeable directly by the electric mains, the element being provided with: 5. a cover consisting of a panel and a l plastic rear casing body, a concave cabinet with left and right notches placed on the front of the panel for holding a reversible and positionable plug with a shaft, 10. a charger installed in the casing, the charger having an AC input plug whereby the alternating current is input and a DC output terminal, electronic means for rectifying, filtering and: stabilizing the input alternating current to drive a transformer and a charging circuit by a transistor driving circuit to charge the rechargeable battery element with DC charging, where the charging circuit includes a transformer with a primary and secondary coil, where the DC output connector is connected with elastic guide members for supplying DC to a mobile phone, characterized in that the shaft is a plastic support shaft extending at its two ends on the left and right side of the casing body plug to fit in the left and right notches of the concave cabinet on the panel, the extending ends are gripped by front notches of left and right support plates facing each other installed in the rear casing body, ~ 30 that left and right-hand electrical insertion members penetrate through the plastic enclosure body, which has two elastic conductive parts, used as AC input terminals, extend from a circuit board and press rear ends of the electrical insertion members of the inside-out plug, which 5 an optical coupling switch far connected to the base of the transistor of the driving circuit, that the charging circuit is connected to the output terminal of the transformer secondary coil, that the following elements are connected across the charging circuit: a dual color LED, a capacitor (C4) connected serially to a diode (D4), and the rechargeable battery element, a linear IC connected at the junction of the capacitor (C4) and the diode (T4) through a Zener diode (D5) to a ref supply voltage, wherein another end of the linear IC is connected to the intersection of the dual color LED for comparing the charging voltage with the reference voltage, the dual color LED lighting up in red when the voltage is lower than the reference voltage, where the diode (D4) is conductive and the dual color LED lights up in green when the rechargeable battery element is fully charged, at the same time, a low panning is performed on the optical coupling switch of the linear IC to cut off the transistor 25 in the driver circuit. 2. AC / DC rechargeable mobile phone battery element according to claim 1, characterized in that the plug on the casing is retractable and can be fixed in the concave box of the panel, while simultaneously disconnecting the electrical insertion part of the plug is of the elastic guide member of the circuit board with its rear end up. AC / DC rechargeable telephone battery element according to claim 1 or 2, characterized in that the concave 35 housing is placed in the back of the housing to hold the plug. AC / DC rechargeable telephone battery element »1010026 according to claim 1, 2 or 3, characterized in that the rechargeable battery element is connected in series with a thermally sensitive resistor before being connected to the secondary coil of the charger . -o-o-o-o-o-o-o- AS / KP i p1 01D 0 2 6