TWM550505U - Wireless rechargeable battery - Google Patents

Description

Wireless rechargeable battery

This creation is about a battery, especially a wireless rechargeable battery.

Nowadays, the use of portable electronic devices such as cameras, mobile phones, etc., has been deeply rooted in people's lives. With the rapid development of electronic technology, the types and functions of electronic devices are becoming more diverse, and the demand for battery power has also increased dramatically. Since the storage capacity of a primary battery is limited, and it is not enough to be used after the power is consumed, it needs to be discarded. For environmental considerations, the portable electronic device mostly uses a secondary battery (ie, a rechargeable battery) as a power source. In addition, in order to realize the convenience of use, a charging technology that does not need to be electrically connected through a charging line or a charging stand is developed, that is, a wireless charging technology.

The wireless charging is based on the principle that the coil induced magnetic field changes to generate electric power, and thus the wireless rechargeable battery includes a coil. In the conventional wireless rechargeable battery, the coil is disposed on the circuit board to be connected to the circuit board, and the space that can be set is relatively narrow, so that the number of coils that can be set is limited, so that the efficiency of wireless charging is difficult to be improved.

In order to solve the above problems, the present invention provides a wireless rechargeable battery.

A wireless rechargeable battery disclosed in one embodiment of the present invention includes a housing, a power storage body, a coil, and a controller. The housing has spaced first and second end caps and has a side wall extending from the first end cap to the second end cap. The first end cover, the second end cover and the side walls together form an accommodating space, and the first end cover includes a positive terminal electrode and the second end cover includes a negative terminal electrode. The power storage body is disposed in the accommodating space and electrically connected to one of the positive terminal electrode and the negative terminal electrode. The coil is disposed around the power storage body to sense the change of the environmental magnetic field to generate electricity. The controller is disposed in the accommodating space, and is electrically connected to the other of the positive electrode and the negative electrode, the power storage body, and the coil, and selectively controls the power supply to the power storage device according to the power storage amount of the power storage device.

A wireless rechargeable battery disclosed in one embodiment of the present invention, wherein the coil is disposed on an inner surface of a sidewall of the housing.

The wireless rechargeable battery disclosed in one embodiment of the present invention, wherein the coil is disposed on an outer surface of the sidewall of the housing, the sidewall has at least one opening, and both ends of the coil extend through the at least one opening to the accommodating space, and The wireless rechargeable battery further includes an outer surface of the outer cladding covering the side walls.

The wireless rechargeable battery disclosed in one embodiment of the present invention, wherein the side wall of the casing comprises an inner side wall and an outer side wall, the inner side wall is closer to the accommodating space than the outer side wall, and a cavity is formed between the inner side wall and the outer side wall, and the coil is disposed on the side wall a cavity, and both ends of the coil extend from the cavity to the accommodating space.

According to the wireless rechargeable battery disclosed in the above embodiment, by the coil structure surrounding the power storage body, the installation area and the number of turns of the coil can be increased, thereby improving the efficiency of the induced magnetic field change to be converted into electric power.

The above description of the present invention and the following description of the embodiments are intended to demonstrate and explain the principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail below in the embodiments, which are sufficient to enable any skilled artisan to understand the technical contents of the present invention and implement it according to the contents, the scope of the patent application and the drawings. Anyone familiar with the relevant art can easily understand the purpose and advantages of this creation. The following examples are intended to further illustrate the scope of this creation, but do not limit the scope of the creation in any way.

Please refer to FIG. 1. FIG. 1 is a functional block diagram of a wireless rechargeable battery according to an embodiment of the present invention. As shown in FIG. 1, in this embodiment, the wireless rechargeable battery 1 includes a housing 11, a power storage body 12, a coil 13, and a controller 14. The housing 11 has a first end cover 111 and a second end cover 113 spaced apart from each other, and has a side wall 115 extending from the first end cover 111 to the second end cover 113 to be covered by the first end cover 111 and the second end cover 113 and sidewall 115 together form an accommodating space 117, wherein the first end cap 111 includes a positive terminal electrode 1111 and the second end cap 113 includes a negative terminal electrode 1131. The power storage body 12 and the controller 14 are housed in the accommodating space 117 of the casing 11. The coil 13 is disposed around the power storage body 21, and the installation position of the coil 13 will be described in detail in the embodiments to be described later.

The region of the casing 11 other than the metal positive electrode 1111 and the negative electrode 1131 is, for example, made of plastic, or a region other than the electrode and the electrode is electrically isolated. The power storage body 12 is electrically connected to the negative terminal electrode 1131 of the casing 11, and the power storage body 12 is, for example, a nickel hydrogen battery, a lithium battery, or another secondary battery. The coil 13 is used to sense a change in the ambient magnetic field to generate power and transmit it to the controller 14. The controller 14 is, for example, a control circuit that detects the amount of electric power stored in the electric storage body 12 and selectively supplies electric power to the electric storage body 12 in accordance with the electric storage amount. In more detail, when the controller 14 determines that the stored amount of the power storage body 12 is less than the threshold power, the controller 14 supplies power to the power storage body 12; otherwise, when the controller 14 determines that the power storage amount of the power storage body 12 is greater than the threshold power amount, The controller 14 will stop supplying power to the power storage body 12. For example, the controller 14 includes a switch. When the controller 14 determines that the stored amount of the power storage body 12 is greater than or equal to the first threshold power amount, for example, 100%, the circuit is opened by the switch to avoid an overcharge condition.

In the above embodiment, the power storage body 12 is electrically connected to the negative terminal electrode 1131 and the controller 14 is connected to the positive terminal electrode 1111. However, the power storage body 12 may be connected to the positive terminal electrode 1111 and the controller may be connected to the negative terminal. Electrode 1131.

Referring to FIG. 2, FIG. 2 is a partial functional block diagram of a wireless rechargeable battery 1' according to another embodiment of the present invention. As shown in FIG. 2, in this embodiment, the wireless rechargeable battery 1' includes a communication circuit 15 in addition to the casing 11, the power storage body 12, the coil 13 and the controller 14 as described in the embodiment of FIG. , a rectifier 16 and a DC/DC converter 17. The description of the casing 11, the electric storage body 12, the coil 13 and the controller 14 and their connection relationship are the same as those of the embodiment of Fig. 1, and therefore will not be described again.

In detail, the communication circuit 15 is received in the accommodating space 117 of the housing 11 and electrically connected to the controller 14. The controller 14 generates a notification signal according to the amount of electric power stored in the electric storage device 12, and controls the communication circuit 15 to transmit the notification signal, wherein the notification signal can indicate the actual value of the electric storage amount of the electric storage device 12 or the state indicating the electric storage amount. For example, when the controller 14 determines that the electric storage amount of the electric storage device 12 is 50%, the control communication circuit 15 transmits a notification signal containing information of 50% of the electric storage amount. As another example, when the controller 14 determines that the amount of stored electricity of the electric storage device 12 is greater than or equal to the first threshold electric quantity, for example, 100%, the transmitted notification signal will indicate that charging has been completed, and when the controller 14 determines the electric storage amount of the electric storage body 12. When the power is less than or equal to the second threshold, for example, 20%, the notification signal indicates that the power is about to be exhausted. The above examples are all examples and are not intended to limit the information contained in the notification signal of this creation.

The rectifier 16 is received in the accommodating space 117 of the housing 11 and electrically connected to the coil 13 and the controller 14, and the DC/DC converter 17 is also received in the accommodating space 117 of the housing 11. Electrically connected to the rectifier 16, the controller 14, and the power storage body 12. The rectifier 16 rectifies the electric power from the coil 13, converts it from alternating current to direct current, and transmits it to the direct current/direct current converter 17. The DC/DC converter 17 supplies the received power to the power storage body 12 after the pressure is processed. The controller 14 detects the amount of electric power stored in the electric storage body 12, and accordingly selectively turns off the rectifier 16 or the DC/DC converter 17. In detail, when the amount of electric power stored in the electric storage body 12 is larger than the first threshold electric power, the controller 14 turns off the rectifier 16 or the DC/DC converter 17, and stops supplying power to the electric storage body 12 to avoid overcharging.

In addition, one or more of the controller 14 and the communication circuit 15, the rectifier 16 and the DC/DC converter may be implemented in a circuit and integrated in a circuit board and disposed in the casing 11.

Next, please refer to Figures 3A-3E. 3A is a perspective view showing a combination of a wireless rechargeable battery 2 according to an embodiment of the present invention, FIG. 3B is a cross-sectional view of the wireless rechargeable battery 2 shown in FIG. 3A, and FIG. 3C is a drawing according to another embodiment of the present creation. FIG. 3D is a schematic cross-sectional view of a wireless rechargeable battery 2 ′′ according to another embodiment of the present invention, and FIG. 3E is a schematic diagram of another embodiment of the present invention. A schematic cross-sectional view of a wireless rechargeable battery 2'''. As shown in FIGS. 3A-3E, the wireless rechargeable batteries 2, 2', 2", and 2"' include a housing 11, a power storage body 12, a coil 13, as described in the above embodiments, and a controller 14 and A circuit board 20 of one or more of the communication circuit 15, the rectifier 16 and the DC/DC converter.

As shown in FIG. 3A, the shape of the casing 11 is exemplified by a cylindrical shape, and the casing 11 may be in the appearance of a conventional battery of 1, 2, 3 or 4, and the casing 11 may also have a square shape, for example. The appearance of the housing of the wireless rechargeable battery of the present invention is not limited to the above, as the appearance of the 9V battery.

In the embodiment shown in FIG. 3A and FIG. 3B, the power storage body 12, the coil 13 and the circuit board 20 of the wireless rechargeable battery 2 are disposed in the accommodating space 117 of the housing 11, and the power storage body 12 is electrically connected to the housing 11. The negative electrode 1131 and the circuit board 20 are electrically connected to the positive terminal electrode 1111 of the housing 11. The coil 13 surrounds the power storage body 12 and is disposed on the inner surface of the side wall 115 of the casing 11. The two ends of the coil 13 are electrically connected to the controller 14 or the rectifier 16 integrated on the circuit board 20.

In the embodiment shown in FIG. 3C , the power storage body 12 and the circuit board 20 are disposed in the accommodating space 117 of the housing 11 , and the coil 13 is disposed on the outer surface of the sidewall 115 of the housing 11 and surrounds the power storage body 12 . The side wall 115 has at least one opening 1151 , and both ends of the coil 13 can extend from the outside of the housing 11 into the accommodating space 117 through the opening 1151 to be electrically connected to the circuit board 20 . In this embodiment, the wireless rechargeable battery 2' further includes an outer cover 21 to cover the outer surface 1 of the side wall 115 of the casing 1 and the coil 13 on the outer surface to prevent the coil 13 from being damaged by external force. The outer cover 21 may be a film made of plastic or other non-conductive material, and the creation is not limited.

3D and 3E, the sidewall 115 of the housing 11 of the wireless rechargeable battery 2'' and 2''' includes an inner sidewall 1153 and an outer sidewall 1155, and the inner sidewall 1153 is closer to the outer sidewall 1155. The accommodating space 117 has a cavity 1157 formed between the inner sidewall 1153 and the outer sidewall 1155. The coils 13 of the wireless rechargeable batteries 2'' and 2''' are disposed in the cavity 1157, and both ends of the coil 13 extend from the cavity 1157 into the accommodating space 117 to be electrically connected to the circuit board 20. As shown in FIG. 3D, in this embodiment, the inner side wall 1153 of the housing 11 has at least one opening 1159, so that both ends of the coil 13 can extend from the cavity 1157 to the accommodating space 117 through the opening 1159. In the embodiment shown in FIG. 3E, a gap 1161 is formed between the inner side wall 1153 of the housing 11 and the first end cover 111. Therefore, both ends of the coil 13 can extend from the cavity 1157 to the accommodating space through the gap 1161. 117.

In the embodiment of FIGS. 3A-3E described above, the power storage body 12 is electrically connected to the negative terminal electrode 1131 and the controller 14 is connected to the positive terminal electrode 1111. However, the power storage body 12 may be connected to the positive terminal electrode 1111. The controller is connected to the negative terminal electrode 1131.

Next, please refer to FIG. 4. FIG. 4 is a functional block diagram of a wireless rechargeable battery and a wireless charger according to an embodiment of the present invention. In FIG. 4, the wireless rechargeable battery 1' is also similar to the wireless rechargeable battery 1' in the embodiment shown in FIG. 2, and the connection relationship and operation between the components included in the embodiment are as described in the embodiment of FIG. Further, the wireless rechargeable battery 1 shown in FIG. 1 is also applicable to the embodiment of FIG.

As shown in FIG. 4, the wireless charger 3 includes an AC/DC converter 31, a driver 32, a controller 33, a voltage/current detector 34, and a coil 35. The AC/DC converter 31 is electrically connected to the driver 32. The driver 32 is electrically connected to the controller 33 and the coil 35, and the voltage/current detector 34 is electrically connected to the controller 33 and the coil 35. The AC/DC converter 31 receives power from the external power source, converts it and transmits it to the driver 32, and the driver 32 transmits the converted power to the wireless charging through the electromagnetic induction between the coil 35 and the coil 12 of the wireless rechargeable battery 1'. Battery 1'. The controller 33 of the wireless charger 3 controls the power transmitted by the driver 32 in accordance with the voltage or current of the coil 35 detected by the voltage/current detector 34.

According to the wireless rechargeable battery of the above embodiment, by the coil structure surrounding the electric storage body, the installation area and the number of turns of the coil can be increased, thereby increasing the efficiency of the induced magnetic field change to be converted into electric power.

Although the present invention has been described above with reference to the preferred embodiments thereof, it is not intended to limit the present invention, and anyone skilled in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of patent protection of the creation shall be subject to the definition of the scope of the patent application attached to this specification.

1, 1'‧‧‧ wireless rechargeable battery
11‧‧‧Shell
111‧‧‧First end cap
113‧‧‧Second end cap
115‧‧‧ side wall
117‧‧‧ accommodating space
1111‧‧‧ positive terminal electrode
1131‧‧‧Negative electrode
12‧‧‧electric storage
13‧‧‧ coil
14‧‧‧ Controller
15‧‧‧Communication circuit
16‧‧‧Rectifier
17‧‧‧DC/DC Converter
2, 2', 2'', 2'''‧‧‧ wireless rechargeable battery
20‧‧‧ boards
21‧‧‧Overcoat
1151, 1159‧‧‧ openings
1153‧‧‧ inner side wall
1155‧‧‧Outer side wall
1157‧‧‧ Cavity
1161‧‧‧ gap
3‧‧‧Wireless charger
31‧‧‧AC/DC Converter
32‧‧‧ drive
33‧‧‧ Controller
34‧‧‧Voltage/Current Detector

FIG. 1 is a functional block diagram of a wireless rechargeable battery according to an embodiment of the present invention. FIG. 2 is a partial functional block diagram of a wireless rechargeable battery according to another embodiment of the present invention. FIG. 3A is a combined perspective view of a wireless rechargeable battery according to an embodiment of the present invention. FIG. 3B is a schematic cross-sectional view of the wireless rechargeable battery illustrated in FIG. 3A. 3C is a cross-sectional view of a wireless rechargeable battery according to another embodiment of the present invention. FIG. 3D is a schematic cross-sectional view of a wireless rechargeable battery according to another embodiment of the present invention. FIG. 3E is a schematic cross-sectional view of a wireless rechargeable battery according to another embodiment of the present invention. FIG. 4 is a functional block diagram of a wireless rechargeable battery and a wireless charger according to an embodiment of the present invention.

1‧‧‧Wireless rechargeable battery

11‧‧‧Shell

111‧‧‧First end cap

113‧‧‧Second end cap

115‧‧‧ side wall

117‧‧‧ accommodating space

1111‧‧‧ positive terminal electrode

1131‧‧‧Negative electrode

12‧‧‧electric storage

13‧‧‧ coil

14‧‧‧ Controller

Claims (8)

A wireless rechargeable battery includes: a housing having a first end cover and a second end cover spaced apart from each other, and having a side wall extending from the first end cover to the second end cover for the first The end cover, the second end cover and the side wall together form an accommodating space, the first end cover comprises a positive end electrode and the second end cover comprises a negative end electrode; a power storage body is disposed in the accommodating space And electrically connected to one of the positive terminal electrode and the negative terminal electrode; a coil disposed around the power storage body for sensing a change in an environmental magnetic field to generate a power; and a controller disposed in the receiving The space is electrically connected to the other of the positive terminal electrode and the negative terminal electrode, the power storage body and the coil, and the controller controls the power to be selectively supplied to the power storage according to a stored electricity amount of the power storage body. body. The wireless rechargeable battery of claim 1, wherein the coil is disposed on an inner surface of the side wall of the housing. The wireless rechargeable battery of claim 1, wherein the coil is disposed on an outer surface of the sidewall of the housing, the sidewall has at least one opening, and the two ends of the coil extend through the at least one opening to the capacitor A space is provided, and the wireless rechargeable battery further includes an outer cover covering the outer surface of the sidewall. The wireless rechargeable battery of claim 1, wherein the side wall of the housing comprises an inner side wall and an outer side wall, the inner side wall being closer to the accommodating space than the outer side wall, and between the inner side wall and the outer side wall A cavity is formed, the coil is disposed in the cavity, and both ends of the coil extend from the cavity to the accommodating space. The wireless rechargeable battery according to claim 4, wherein the inner side wall has at least one opening, and the two ends of the coil extend from the cavity to the accommodating space through the at least one opening. The wireless rechargeable battery of claim 4, wherein the inner side wall has a gap between the first end cover or the second end cover, and the two ends of the coil extend through the gap from the cavity to the space Set the space. The wireless rechargeable battery of claim 1, further comprising a communication circuit disposed in the accommodating space of the housing and electrically connected to the controller, the controller generating a notification signal according to the stored power. And the communication circuit sends the notification signal. The wireless rechargeable battery of claim 1, further comprising: a rectifier disposed in the accommodating space of the housing and electrically connected to the coil and the controller; and a DC/DC converter, The device is disposed in the accommodating space of the housing, and is electrically connected to the rectifier, the controller and the power storage body, and provides the rectified and converted power to the power storage body; wherein the controller is configured according to the power storage The amount of stored electricity of the body selectively turns off the rectifier or the DC/DC converter.