CN105099004A - Power supply selection for wireless charging process - Google Patents
Power supply selection for wireless charging process Download PDFInfo
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- CN105099004A CN105099004A CN201510501718.3A CN201510501718A CN105099004A CN 105099004 A CN105099004 A CN 105099004A CN 201510501718 A CN201510501718 A CN 201510501718A CN 105099004 A CN105099004 A CN 105099004A
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- wireless charging
- receiving terminal
- charging system
- system signal
- power
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
In a wireless charging system, when energy is transferred from a transmitting end to a receiving end, if the receiving end is in a low-power mode of power-off, sleep or the like, a power distribution circuit generally supplies wireless voltage to a wireless communication circuit; and if the receiving end is communicated with the transmitting end to complete the wireless charging function and the energy has been received by the wireless communication circuit, the power distribution circuit switches the voltage supply to the wireless communication circuit. The receiving end executes valid and reasonable power supply selection, thus ensuring that a terminal device completes the wireless charging function in different modes.
Description
Technical field
Based on battery powered electronic equipment, as smart mobile phone, e-book, game machine, Pad, computer etc., usually all can have a Power Management Unit (PMU), the power conversion being responsible for outside to receive is the energy of internal cell.Wireless charging technology utilize near field respond to or inductance coupling high, by power supply unit by energy Wireless transceiver to power device, complete the wireless transmission of energy from wireless transmitting terminals to internal cell.In order to realize wireless charging function better, wireless charging system adopts the two-way communication of transmitting terminal and receiving terminal.The wireless charging standard of main flow has three kinds: Qi standard, PMA standard, A4WP standard, and communication standard is two-way communication but is not quite similar, and the present invention is all applicable.
Background technology
Based on wireless charging system framework, the process of two kinds of equipment (referring generally to energy transmitting terminal and energy acceptance end) transferring electric powers does not need the tangible electric wire existed by any physics.When the process that energy shifts from transmitting terminal to receiving terminal, if receiving terminal is under the low-power modes such as shutdown, sleep, power distribution circuit generally adopts wireless voltage to supply to radio communication circuit; If receiving terminal is communicated with complete with transmitting terminal wireless charging function, and energy is received by radio communication circuit, switching supplies to the voltage of radio communication circuit by power distribution circuit.The present invention is intended to receiving terminal execution power supply effectively and reasonably and selects, and ensures that terminal equipment completes wireless charging function in different modes.
Summary of the invention
We first learn about wireless charging system framework, as Fig. 1 depicts a mobile terminal to carry out wireless charging system framework by recharging base.Mobile terminal can be that regular handset, smart mobile phone, Hand Personal Computer, Pad etc. can the portable electronic products of electromagnetic induction wireless charging.When recharging base detects mobile terminal (distance of mobile terminal recharging base distance is less than 1cm), the energy conversion unit of transmitting terminal supplies energy to transmitting coil, produces magnetic field.At receiving terminal, magnetic field energy is received by receiving coil and changes electric current into, and meanwhile, received energy unit is to the load supplying of mobile terminal.Transmitting terminal and receiving terminal have one to communicate and control unit, are responsible for induction and management wireless charging process.The communication of Fig. 1 receiving terminal and control unit are in the present invention by 14 radio communication circuits that are further refined as shown in Figure 2 and 15 power distribution circuits.
The function that 10 power managements in Fig. 2 will include Power Management Unit (PMU) and charge the battery.13 radio communications connect and can perform according to different communication network protocol (TCP/IP, IPv6 etc.) or standard (3G, 4G, bluetooth etc.).14 radio communication circuits contain all elements realizing the transmission of wireless charging function connected sum, there are 1 crystal oscillator, 2 transceivers and 3 baseband processing modules, these modules can be supported as certain particular wireless communication standards such as bluetooths, and communication network protocol different in addition or standard can have the power distribution seed of independent or shared reception 4 voltage stabilizing service voltage.15 power distribution circuits are made up of 6 processing modules and the steady control circuit of 5 service voltages, optionally for 14 radio communication circuits provide 4 voltage stabilizing service voltages.6 processing modules will by 7 wireless service voltage Vwpt or 8 battery service voltage Vbat by selecting logic (as Fig. 3) to decide 4 voltage stabilizing service voltages according to the power supply preset.
accompanying drawing illustrates:below in conjunction with accompanying drawing, the present invention is further described with enforcement.
Fig. 1 is wireless charging system framework
Fig. 2 is that schematic diagram is selected in power supply
Fig. 3 is that logic is selected in power supply
embodiment:the present invention power in wireless charging process select logic as shown in Figure 3:
The power supply of wireless charging is selected will by the Determines of the PMU pattern of 10 power managements in load (Vbat), wireless charging (Vwpt) and Fig. 2.This power supply selects logic will to prestore 6 processing modules in fig. 2, and by its execution.
Situation 0: receiving terminal is in off-mode, and there is no available wireless charging signal, PMU pattern is in closed condition.
Situation 1: the load voltage Vbat of receiving terminal is low, be not enough to the working voltage supporting receiving terminal, wireless charging signal is sufficient, and PMU is in wireless charging pattern.In the case, in Fig. 2,6 processing modules will select 7 wireless service voltage Vwpt by 5 service voltage voltage stabilizing circuits, close 8 battery service voltage Vbat, and 10 power managements will give the energy of 9 received energy unit 11 load internal battery chargings.
Situation 2: do not have available wireless charging signal, the load battery of receiving terminal can support that receiving terminal runs, and PMU is in active or sleep state.In the case, 11 load internal battery electricity in Fig. 2 are sufficient, and be the main voltage supply of receiving terminal, namely 14 radio communication circuits are supplied by 8 battery service voltage Vbat, wireless charging function not enabled.
Situation 3a: wireless charging signal is sufficient, and the load battery of receiving terminal can support that receiving terminal runs, and PMU is in active state, and Vbat is greater than Vwpt.In the case, 11 load internal battery electricity in Fig. 2 are sufficient, and be the main voltage supply of receiving terminal, namely 14 radio communication circuits are supplied by 8 battery service voltage Vbat, and wireless charging function is opened.PMU sleep state is forbidden.
Situation 3b: wireless charging signal is sufficient, and the load battery of receiving terminal can support that receiving terminal runs, and PMU is in active state, and Vbat is less than Vwpt.In the case, 11 load internal battery electricity in Fig. 2 are sufficient not, in order to power management effectively, the main voltage supply (comprising the voltage supply of 14 radio communication circuits) of receiving terminal is supplied by 7 wireless service voltage Vwpt, until the voltage Vbat of 11 load internal batteries is more than Vwpt or certain threshold value.
Claims (3)
1. in wireless charging system framework, the communication and control unit of wireless charging receiving terminal includes radio communication circuit and power distribution circuit, and the power supply effectively and reasonably performing receiving terminal is selected.
2., based on the requirement of right 1, power distribution circuit is by according to the load battery status of receiving terminal and wireless charging system signal condition situation, and perform main power source supply and select and PMU model selection, situation comprises:
A) receiving terminal load shutdown, wireless charging system signal is weak or do not have;
B) receiving terminal load shutdown, wireless charging system signal is strong;
C) the full lattice of the receiving terminal load energy content of battery, wireless charging system signal is weak or do not have;
D) the full lattice of the receiving terminal load energy content of battery, wireless charging system signal is strong.
3., based on right 1 and right 2, power distribution circuit a) and c) will adopt load battery to be main electricity, at situation b in situation) and d) adopt wireless charging system signal to be main electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510501718.3A CN105099004A (en) | 2015-08-17 | 2015-08-17 | Power supply selection for wireless charging process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510501718.3A CN105099004A (en) | 2015-08-17 | 2015-08-17 | Power supply selection for wireless charging process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105099004A true CN105099004A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510501718.3A Pending CN105099004A (en) | 2015-08-17 | 2015-08-17 | Power supply selection for wireless charging process |
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| CN (1) | CN105099004A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632576A (en) * | 2009-07-30 | 2010-01-27 | 浙江大学 | Wirelessly controlled miniature embedded type wireless energy-supply power supply management integrated circuit chip |
| CN102299548A (en) * | 2010-06-24 | 2011-12-28 | 海尔集团公司 | Electronic device and power supply method thereof as well as wireless power supply system |
| US20120280648A1 (en) * | 2011-05-04 | 2012-11-08 | Samsung Electro-Mechanics Co., Ltd. | Apparatus and method for charging wireline and wireless powers |
| CN103262387A (en) * | 2010-12-24 | 2013-08-21 | 丰田自动车株式会社 | Non-contact charging system, non-ontact charging method, non-<wbr/>contact charging type vehicle, and non-<wbr/>contact charging management device |
| CN103762724A (en) * | 2014-01-03 | 2014-04-30 | 北京智谷睿拓技术服务有限公司 | Wireless energy transmission method and system |
-
2015
- 2015-08-17 CN CN201510501718.3A patent/CN105099004A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632576A (en) * | 2009-07-30 | 2010-01-27 | 浙江大学 | Wirelessly controlled miniature embedded type wireless energy-supply power supply management integrated circuit chip |
| CN102299548A (en) * | 2010-06-24 | 2011-12-28 | 海尔集团公司 | Electronic device and power supply method thereof as well as wireless power supply system |
| CN103262387A (en) * | 2010-12-24 | 2013-08-21 | 丰田自动车株式会社 | Non-contact charging system, non-ontact charging method, non-<wbr/>contact charging type vehicle, and non-<wbr/>contact charging management device |
| US20120280648A1 (en) * | 2011-05-04 | 2012-11-08 | Samsung Electro-Mechanics Co., Ltd. | Apparatus and method for charging wireline and wireless powers |
| CN103762724A (en) * | 2014-01-03 | 2014-04-30 | 北京智谷睿拓技术服务有限公司 | Wireless energy transmission method and system |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151125 |