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Mobile optical charging system and application based on time division multiplexing and pulse width modulation

A technology of pulse width modulation and charging system, which is applied in the direction of current collectors, electric vehicles, electrical components, etc., and can solve problems such as convenience, mobility, difficulty in aligning the sending end and receiving end, and difficulty in integrating mobile devices , to achieve the effects of reducing gain dielectric loss, simplifying design, and reliable and convenient charging

Active Publication Date: 2021-11-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The charging power of electromagnetic induction can reach the kilowatt level, but limited by the magnetic field coupling, the charging distance can only reach the centimeter level, which is difficult to meet the needs of convenience and mobility
[0006] (2) Magnetic resonance can achieve high-efficiency energy transmission, but it is difficult to integrate into mobile devices due to the large size of the coil
However, it is difficult to align the transmitter and receiver; more importantly, due to safety regulations, current commercial systems can only provide microwatts to milliwatts of power

Method used

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  • Mobile optical charging system and application based on time division multiplexing and pulse width modulation
  • Mobile optical charging system and application based on time division multiplexing and pulse width modulation
  • Mobile optical charging system and application based on time division multiplexing and pulse width modulation

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Embodiment 1

[0043] Such as figure 1 As shown, a mobile optical charging system (MOC, Mobile Optical Charging) based on time division multiplexing and pulse width modulation, the system includes a transmitter 1 and a plurality of receivers 2 matching it, and the transmitter 1 and the receiver 2 correspond to An optical transmitter 11 and an optical receiver 21 are provided, and the optical transmitter 11 and the optical receiver 21 form a resonant optical path, and the transmitting end 1 is also provided with a device for controlling the optical transmitter 11 to charge multiple optical receivers 21 according to the charging demand information of the receiving end 2. A controller 12 for sending time-division multiplexed light energy pulses with different pulse widths, and a receiving end 2 is provided with an electric energy converter 22 for converting the light energy pulses into electrical energy. The receiving end 2 is provided with a first communication module 23 for sending charging d...

Embodiment 2

[0080] The mobile optical charging system based on time-division multiplexing and pulse width modulation in this embodiment is the same as that in Embodiment 1. In this embodiment, it is assumed that two batteries at the receiving end 2 need to be charged, and the current and voltage required at the receiving end 21 are 0.25 and 4.0 respectively. V, the current and voltage required by the receiving terminal 22 are 0.5 and 4.0V, respectively. Therefore, the expected energy buffer output power should be 1W and 2W. If the charging cycle is 1×10 -6 s, then the energy required for one cycle is 1×10 -6 J and 2×10 -6 J. If the laser irradiation intensity of the light transmitter is set to 9.375W / cm 2 , then according to Figure 10 , The output power of the PV panel is 5W. So in order to provide 1×10 -6 J and 2×10 -6 J energy, then the light energy pulse time width of the optical transmitter 11 to the receiving end 21 is 0.2×10 -6 s, the light energy pulse time width for the ...

Embodiment 3

[0082] The mobile optical charging system based on time-division multiplexing and pulse width modulation in this embodiment is the same as that in Embodiment 1. In this embodiment, it is assumed that two batteries at the receiving end 2 need to be charged, and the current and voltage required at the receiving end 21 are 0.25A and 0.25A respectively. 4.0V, the current and voltage required by the receiving end 22 are 0.5A and 4.0V respectively. Therefore, the expected energy buffer output power should be 1W and 2W. If the charging cycle is 1×10 -6 s, then the energy required for one cycle is 1×10 -6 J and 2×10 -6 J. If the laser irradiation intensity of the light transmitter is set to 9.375W / cm 2 , then according to Figure 9 , The output power of the PV panel is 5W. So in order to provide 1×10 -6 J and 2×10 -6 J energy, then the light energy pulse time width of the optical transmitter 11 to the receiving end 21 is 0.2×10 -6 s, the light energy pulse time width for the ...

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Abstract

The present invention relates to a mobile optical charging system and application based on time division multiplexing and pulse width modulation. The system includes a sending end (1) and a plurality of matching receiving ends (2). The sending end (1) An optical transmitter (11) and an optical receiver (21) are correspondingly provided with the receiving end (2), and the described optical transmitter (11) and the optical receiver (21) form a resonant optical path, and the described transmitting end (1) also A controller (12) for controlling the optical transmitter (11) to send time-division multiplexed optical energy pulses of different pulse widths to multiple optical receivers (21) according to the charging demand information of the receiving end (2), said The receiving end (2) is provided with an electric energy converter (22) for converting light energy pulses into electric energy. Compared with the prior art, the present invention can realize simultaneous charging by multiple receiving ends, and the charging is reliable and stable, and the service life of the charging system is long.

Description

technical field [0001] The invention relates to a mobile optical charging system, in particular to a mobile optical charging system based on time division multiplexing and pulse width modulation and its application. Background technique [0002] According to the Cisco Visual Networking Index (VNI) report, wireless service traffic will increase by nearly 100% every year in the future, and wireless data traffic will increase by 1000 times in the next ten years. Subsequently, the information processing capabilities of wireless communication and mobile computing devices will also continue to increase, thus putting forward higher and higher requirements for the energy supply of mobile devices. Taking the current smart phone as an example, more than 70% of the volume and weight are occupied by batteries, and this proportion is still increasing. Secondly, power supply is also a key technology of the Internet of Things and wearable devices, especially long-distance, mobile, and dur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J50/30
CPCH02J7/025H02J7/0013H02J50/30
Inventor 熊明亮刘庆文邓浩张清清
Owner TONGJI UNIV
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