CN106026235A - Wireless charger - Google Patents

Abstract

The invention provides a wireless charger, which comprises a front cover, a shell, a transmitting coil, a detection positioner, a support system and a drive system, wherein the shell is matched with the front cover to from an accommodating space; the transmitting coil is accommodated into the accommodating space and is used for generating an electromagnetic wave; the detection positioner is used for detecting the position at which to-be-charged equipment is located; the support system supports the transmitting coil in the accommodating space; the drive system drives the transmitting coil to move to be opposite to the to-be-charged equipment; and the drive system is electrically connected with the detection positioner. Compared with the related technology, the wireless charger provided by the invention achieves automatic positioning, and is stable in performance and high in charging efficiency.

Description

Wireless charger

technical field

The invention relates to the technical field of charging, in particular to a wireless charger.

Background technique

Wireless charging is a new type of charging technology that has emerged in recent years. As the name suggests, it can charge electrical equipment within a certain space without the use of charging wires. Compared with traditional wired charging, wireless charging has the advantages of small size, high portability, strong compatibility, and is conducive to the waterproof and dustproof design of electrical equipment. At present, wireless charging technology has been widely used in automobiles, household appliances, mobile devices, etc., and it has broad development prospects.

In related technologies, wireless charging uses radio wave and electromagnetic induction technology to induce and generate induced current through the transmitting coil in the wireless charger and the receiving coil in the device to be charged, and convert the induced current into an electromagnetic wave signal, and the electromagnetic wave signal is transmitted from the wireless charging After the transmitter is transmitted to the device to be charged, the received electromagnetic wave signal is demodulated by the receiving device in the device to be charged, and converted into the DC power used for charging the device, so as to charge the lithium battery of the device, and the wireless charger inside The number and arrangement of coils have a decisive impact on the efficiency of device charging.

The related wireless charger is usually provided with only one transmitting coil, so it can only charge one device to be charged, and requires precise positioning between the wireless charger and the device to be charged, especially different The size or model of the device to be charged is not the same as the location of the wireless charger when charging. The facing position is not the same, and the positioning is not standard, which will reduce the charging efficiency, or even fail to charge normally.

Therefore, it is necessary to provide a new wireless charger to solve the above problems.

Contents of the invention

The technical problem to be solved by the present invention is to provide a wireless charger capable of automatic positioning, stable performance and high charging efficiency.

In order to solve the above technical problems, the present invention provides a wireless charger, which includes a front cover, a housing that cooperates with the front cover to form a storage space, and a transmitting coil for generating electromagnetic waves stored in the storage space, for A detection locator that detects the location of the device to be charged, a support system that supports the transmitting coil in the storage space, and a drive system that drives the transmitting coil to move to face the device to be charged, the drive system and The detection locator is electrically connected.

Preferably, the support system includes a support plate and elastic members arranged along the moving direction of the transmitting coil and respectively located on opposite sides of the support plate, the transmitting coil is fixed on the support plate, and one end of the elastic member is connected to the The support plate is fixedly connected, and the other end is fixedly connected with the housing. The drive system includes a drive coil fixed to the housing and a magnetic steel fixed to the support plate. The drive coil and the magnet The steel is arranged opposite to each other, and the driving coil and the magnetic steel generate a magnetic field force to drive the magnetic steel to drive the support plate to move.

Preferably, the housing includes a bottom wall and a side wall bent and extended from the bottom wall, the elastic member is arranged perpendicular to the bottom wall, and includes an inner arm, an outer arm arranged around the inner arm, and The elastic arm connecting the inner arm and the outer arm, the inner arm is fixed to the support plate, and the outer arm is fixed to the bottom wall and the side wall.

Preferably, the wireless charger further includes a sliding device, the sliding device and the transmitting coil are respectively assembled and fixed on opposite sides of the support plate, the sliding device abuts against the housing, and the transmitting coil The coil is arranged opposite to the front cover.

Preferably, the side wall includes a stepped portion disposed inside it, and the rolling device abuts against the stepped portion.

Preferably, the step portion includes a sliding slot that cooperates with the sliding device, and the sliding device is clamped on the sliding slot.

Preferably, the sliding device is a pulley or a ball.

Preferably, the sliding device is a slide rail.

Compared with the related technology, the wireless charger of the present invention is equipped with the detection locator and the driving system, and passes through the driving system after detecting the position of the device to be charged on the front cover through the detection locator Drive the support plate to move, so that the transmitting coil fixed on the support plate moves to face the wireless charger to realize automatic positioning, so that the charging efficiency of the wireless charger can be optimized, and the detection and positioning The structural performance of the charger and the driving system is stable, thereby making the charging efficiency of the wireless charger high.

Description of drawings

FIG. 1 is a schematic diagram of the three-dimensional structure of the wireless charger of the present invention after removing the front cover;

FIG. 2 is a partially exploded schematic diagram of the three-dimensional structure of the wireless charger of the present invention;

Fig. 3 is a schematic diagram of the structure of the wireless charger of the present invention when charging the device to be charged.

detailed description

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

Please refer to Fig. 1, Fig. 2 and Fig. 3 at the same time, wherein, Fig. 1 is a schematic diagram of the three-dimensional structure of the wireless charger of the present invention after removing the front cover; Fig. 2 is a schematic diagram of the three-dimensional structure of the wireless charger of the present invention; 3 is a schematic diagram of the structure of the wireless charger of the present invention when charging the device to be charged. A wireless charger 10 includes a front cover 1, a housing 2, a transmitting coil 3 for generating and emitting electromagnetic waves, a detection locator 4 for detecting and positioning a device to be charged 20, a support system 5, a drive system 6 and a sliding device 7. The drive system 6 is electrically connected to the detection positioner 4 .

The front cover 1 covers the casing 2 and the two cooperate to form a receiving space (not labeled). The transmitting coil 3, the detecting positioner 4, the supporting system 5, the driving system 6, and the sliding device 7 are all accommodated in the accommodating space. The detection locator 4 is used to detect the position of the device to be charged, the driving system 6 drives the transmitting coil 3 to move to be directly opposite to the device 20 to be charged, and the supporting system 5 supports the transmitting coil 3 In the storage space, the sliding device supports the movement of the transmitting coil 3 .

The casing 2 includes a bottom wall 21 and a side wall 22 bent and extended from the bottom wall 21 , and the side wall 22 includes a stepped portion 221 disposed inside it. The stepped portion 221 is used to support the sliding device 7 . More preferably, in the present invention, the stepped portion 221 includes a sliding slot 2211 that cooperates with the sliding device 7 , and the sliding device 7 is clamped in the sliding slot 2211 . This structure enables the sliding device 7 to move more smoothly, and the sliding device 7 is not easy to move out longitudinally after being locked in the chute 2211 , so that the performance of the transmitting coil 3 is more stable.

The transmitting coil 3 is fixed on the supporting system 5 for generating and emitting electromagnetic waves.

The detection locator 4 is used to detect the position of the device to be charged 20 and after calculation, drive the supporting system 5 to move and drive the transmitting coil 3 to move.

The support system 5 includes a support plate 51 and elastic members 52 respectively located on opposite sides of the support plate 51 along the moving direction of the transmitting coil 3, the transmitting coil 3 is fixed on the support plate 51, and the elastic members One end of 52 is fixedly connected with the support plate 51 , and the other end is fixedly connected with the housing 2 . The transmitting coil 3 and the sliding device 7 are assembled on opposite sides of the support plate 51 respectively, and the transmitting coil 3 is located on a side opposite to the front cover 1 .

In the wireless charger 10 of the present invention, the elastic member 52 is arranged perpendicular to the bottom wall 21 of the casing 2 . Specifically, the elastic member 52 includes an inner arm 521 , an outer arm 522 disposed around the inner arm 521 , and an elastic arm 523 connecting the inner arm 521 and the outer arm 522 . The inner arm 521 is fixed to the support plate 51 , the outer arm 522 is fixed to the bottom wall 21 and the side wall 22 , and the elastic arm 523 is used to provide a deformation restoring force so that the support plate 51 Can move stably.

The drive system 6 is used to drive the support system 5 to move after receiving the signal from the detection locator 4, so as to drive the transmitting coil 3 fixed on the support plate 51 to move to a position opposite to the device 20 to be charged. right. Specifically, the drive system 6 includes a drive coil 61 fixed to the housing 2 and a magnet 62 fixed to the support plate 51, the drive coil 61 is arranged opposite to the magnet 62, and the drive The coil 61 and the magnetic steel 62 generate a magnetic force, and because the driving coil 61 is fixed relative to the housing 2 , the magnetic force drives the magnetic steel 62 to drive the support plate 51 to move.

In this embodiment, the magnetic steel 62 is fixed on the support plate 51 and located on the same side of the support plate 51 as the transmitting coil 3 . The magnetic steel 62 is arranged around the transmitting coil 3 .

At the same time, the magnet 62 can also be used to form a holding force on the device 20 to be charged, so that the device 20 to be charged can be more stably held by the magnet 62 when charging on the wireless charger 10 . The unique magnetic holding improves the reliability of charging.

The sliding device 7 and the transmitting coil 3 are assembled and fixed on opposite sides of the support plate 51 respectively, and the sliding device 7 abuts against the housing 2 to provide sliding for the support plate 51 support. In this embodiment, the sliding device 7 is a pulley or a ball, and may also be a slide rail, and the sliding device 7 abuts against the step portion 221 and is locked in the sliding groove 2211 . The arrangement of the sliding device 7 can effectively reduce the resistance when the supporting plate 51 drives the transmitting coil 3 to move, and improve the stability when it moves.

In this embodiment, the device 20 to be charged may be a mobile terminal such as a mobile phone, an IPAD, and an MP3 player. When the device to be charged 20 is charged by the wireless charger 10, the wireless charger 10 is connected to an external power source, the transmitting coil 3, the detection locator 4 and the driving coil 61 are powered on, and the After the driving coil 61 is energized, it interacts with the magnetic steel 62 to form an electromagnetic field to generate an electromagnetic driving force. The transmitting coil 3 generates and emits electromagnetic waves. When the device to be charged 20 is placed on the front cover 1 of the wireless charger 10 , the detection locator 4 detects the position of the device to be charged 20 and then calculates and locates it, drives the support plate 51 to move through the drive system 6, so that the transmitting coil 3 moves with the support plate 51 To face the device to be charged 20 , the elastic member 52 provides the support plate 51 with lateral support force and restoring force in the horizontal direction, so that the support plate 51 moves smoothly. Therefore, it is ensured that the wireless charger 10 has high charging efficiency when charging the device to be charged 20 .

It should be noted that, if the device 20 to be charged can perform wireless charging, it must include a receiving coil (not shown) for receiving the electromagnetic wave emitted by the transmitting coil 3, and the so-called transmitting coil 3 in the present invention moves to the The device to be charged 20 faces directly, and actually the transmitting coil 3 moves to face the receiving coil. The detection and locator 4 detects the position of the device to be charged 20 and then calculates and locates it through detection and positioning devices in the prior art. The frequency of the transmitting coil 3 is the same as that of the receiving coil, so as to realize the transfer of electromagnetic waves, that is, transmitting and receiving. The frequencies of the driving coil 61 and the transmitting coil 3 may be different, the purpose of which is to generate an electromagnetic field driving force with the magnet 62 .

Compared with the related art, the wireless charger 10 of the present invention is provided with the detection locator 4 and the driving system 6, and the detection locator 4 detects the position of the device 20 to be charged on the front cover 1 Then, the drive system 6 drives the support plate 51 to move, so that the transmitting coil 3 fixed on the support plate 51 moves to face the wireless charger 10 to realize automatic positioning, so that the wireless charger The charging efficiency of the wireless charger 10 is optimal, and the detection locator 4 and the driving system 6 cooperate with the support system 5 to make the structural performance more stable, thereby making the charging efficiency of the wireless charger 10 high.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (8)

1. A wireless charger, comprising a front cover, a casing that cooperates with the front cover to form a storage space, and a transmitting coil for generating electromagnetic waves accommodated in the storage space, characterized in that the wireless charger also It includes a detection locator for detecting the position of the device to be charged, a support system for supporting the transmitting coil in the storage space, and a drive system for driving the transmitting coil to move to face the device to be charged. The driving system is electrically connected with the detection positioner. 2. The wireless charger according to claim 1, wherein the supporting system comprises a supporting plate and elastic members arranged along the moving direction of the transmitting coil and respectively located on opposite sides of the supporting plate, the transmitting coil The coil is fixed on the support plate, one end of the elastic member is fixedly connected to the support plate, and the other end is fixedly connected to the housing, and the drive system includes a drive coil fixed to the housing and a drive coil fixed to the housing. For the magnet steel of the support plate, the drive coil is arranged opposite to the magnet steel, and the drive coil and the magnet steel generate a magnetic field force to drive the magnet steel to drive the support plate to move. 3. The wireless charger according to claim 2, wherein the housing includes a bottom wall and a side wall bent and extended from the bottom wall, the elastic member is arranged perpendicular to the bottom wall, and It includes an inner arm, an outer arm arranged around the inner arm, and an elastic arm connecting the inner arm and the outer arm, the inner arm is fixed to the support plate, and the outer arm is fixed to the bottom wall and the outer arm. the side walls. 4. The wireless charger according to claim 3, wherein the wireless charger further comprises a sliding device, and the sliding device and the transmitting coil are respectively assembled and fixed on opposite sides of the support plate, so that The sliding device abuts against the casing, and the transmitting coil is arranged opposite to the front cover. 5 . The wireless charger according to claim 4 , wherein the side wall includes a step portion disposed inside the side wall, and the rolling device abuts against the step portion. 6 . 6 . The wireless charger according to claim 5 , wherein the stepped portion includes a sliding slot matched with the sliding device, and the sliding device is locked in the sliding slot. 6 . 7. The wireless charger according to claim 5, wherein the sliding device is a pulley or a ball. 8. The wireless charger according to claim 5, wherein the sliding device is a slide rail.