CN207117271U - Wireless charging receiving terminal - Google Patents

Wireless charging receiving terminal Download PDF

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Publication number
CN207117271U
CN207117271U CN201720895426.7U CN201720895426U CN207117271U CN 207117271 U CN207117271 U CN 207117271U CN 201720895426 U CN201720895426 U CN 201720895426U CN 207117271 U CN207117271 U CN 207117271U
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CN
China
Prior art keywords
wireless charging
voltage
battery
charging
rectification module
Prior art date
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Active
Application number
CN201720895426.7U
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Chinese (zh)
Inventor
周斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunshan Liantao Electronics Co Ltd
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Kunshan Liantao Electronics Co Ltd
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Publication date
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Priority to CN201720895426.7U priority Critical patent/CN207117271U/en
Application granted granted Critical
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Active legal-status Critical Current
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Abstract

The utility model discloses a kind of wireless charging receiving terminal, and for carrying out wireless charging to the battery of Intelligent mobile equipment, it includes:Wireless charging receiving coil, the wireless charging being connected with wireless charging receiving coil receives rectification module, and it is connected to the battery power management module between battery and wireless charging reception rectification module, wireless charging receives rectification module and is converted into dc source by the AC signal received on wireless charging receiving coil and does step-down rectifier to form the first DC voltage, battery power management module carries out detecting real-time sampling to the voltage of battery and the first DC voltage is adjusted according to sampling voltage to obtain the charging voltage for changing and changing with cell voltage, wireless charging receives rectification module and charging voltage output charges the battery, effectively reduce the voltage difference between charging voltage and cell voltage, so as to reduce loss, reduce temperature rise of the battery in charging process, and then improve wireless charging efficiency.

Description

Wireless charging receiving terminal
Technical field
A kind of wireless charging receiving terminal is the utility model is related to, more particularly to a kind of can lift the wireless of wireless charging efficiency Charge receiving terminal.
Background technology
With making rapid progress for Intelligent mobile equipment market, there are increasing demand, nothing for the convenience of charging The popularization of micro USB power technology has generally been received with application by domestic consumer, and the wireless charging application of mobile device is advantageously In the convenience of its charging and the water-proof function of product.
The wireless charging receiving terminal for being currently used for the battery progress wireless charging of Intelligent mobile equipment generally includes:Wireless charging Electric receiving coil, wireless charging receive rectification module and DC-DC voltage changing modules, and wireless charging receives the rectification output of rectification module Voltage is generally that 5V outputs are in the majority, and ceiling voltage when mobile device battery is full of is generally 4.3 V, and voltage when empty electric is general Only 3V, therefore also need DC-DC voltage changing modules that wireless charging is received to the voltage of rectification module output and drop to below 4.3V ability For the charging of mobile device battery, and the voltage for being used to charge to battery after being depressured by DC-DC voltage changing modules is general For a constant voltage(Such as 4.3V), when battery underfill electricity, between real-time voltage 3V ~ 4.2V of this constant voltage and battery Voltage difference it is bigger so that increase loss, this loss be converted into heat energy cause the battery temperature in charging process it is too high, charging Efficiency reduces.
For these reasons, it is proposed that a kind of wireless charging receiving terminal design, to lift the wireless charging of mobile device battery Electrical efficiency.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, there is provided one kind can lift wireless charging effect The wireless charging receiving terminal of rate.
To achieve these goals, the utility model provides a kind of wireless charging receiving terminal, for Intelligent mobile equipment Battery carry out wireless charging, including wireless charging receiving coil, be connected with wireless charging receiving coil wireless charging reception Rectification module, the wireless charging receive rectification module and are converted into the AC signal received on wireless charging receiving coil directly Stream power supply simultaneously does step-down rectifier the first DC voltage of formation, wherein, the wireless charging receiving terminal further comprises that one is connected to Battery and wireless charging receive the battery power management module between rectification module, and the battery power management module is to battery Voltage carries out detecting real-time sampling and is adjusted the first DC voltage according to sampling voltage with cell voltage to change to obtain And the charging voltage changed, the wireless charging receive rectification module and charging voltage output charge the battery.
As a further improvement, the charging voltage is higher than cell voltage.
As a further improvement, the battery power management module is a MCU micro-control units.
As a further improvement, the wireless charging receives rectification module and battery power management module is integrated in one In chip.
In summary, the utility model carries out detecting real-time sampling simultaneously by battery power management module to the voltage of battery According to sampling voltage the first DC voltage is adjusted make wireless charging receive rectification module output with cell voltage change and The charging voltage of change charges for battery, effectively reduces the voltage difference between charging voltage and cell voltage, so as to reduce damage Consumption, temperature rise of the battery in charging process is reduced, and then improve wireless charging efficiency.
Brief description of the drawings
Fig. 1 is a kind of connection block diagram of wireless charging receiving terminal of the utility model.
Embodiment
To describe technology contents of the present utility model, construction feature, the objects and the effects in detail, below in conjunction with implementation Mode simultaneously coordinates accompanying drawing to be explained in detail.
Referring to Fig. 1, the utility model provides a kind of wireless charging receiving terminal, for the battery 10 to Intelligent mobile equipment Carry out wireless charging, including wireless charging receiving coil 20, be connected with wireless charging receiving coil 20 wireless charging reception it is whole Flow module 30 and the battery power management module 40 being connected between battery 10 and wireless charging reception rectification module 30, wirelessly Charging receives rectification module 30 and is converted into dc source and does to drop by the AC signal received on wireless charging receiving coil 20 Repoussage stream forms the first DC voltage, and battery power management module 40 carries out detecting real-time sampling and foundation to the voltage of battery 10 Sampling voltage is adjusted to the first DC voltage to obtain the charging voltage for changing and changing with cell voltage, and wireless charging connects Receive rectification module 30 and export charging voltage and charged to battery 10, because what is exported after the adjustment of battery power management module 40 fills Piezoelectric voltage changes with the change of cell voltage, therefore can effectively reduce the voltage difference between charging voltage and cell voltage, from And loss is reduced, reduce temperature rise of the battery 10 in charging process, and then improve wireless charging efficiency.
In the utility model, battery power management module 40 is a MCU micro-control units, and wireless charging receives rectification Module 30 and battery power management module 40 are integrated in a chips, so as to having small volume, the advantages of beneficial to developing, and Develop in design process, beneficial to mobile device Miniaturization Design.
During voltage is adjusted, with cell voltage change and change charging voltage be higher than cell voltage, below with A kind of battery(Voltage has 4.3V when battery is full of, and voltage typically only has 3V when empty electric)Exemplified by illustrate the tool of charging voltage Body variation characteristic:In the present embodiment, the first DC voltage after wireless charging receives the rectification of rectification module 30 is generally 5V, The empty electricity of battery 10 is 3V ~ 4.3V to full electric voltage range, and during wireless charging, battery power management module 40 is to battery 10 voltage detecting real-time sampling, and the first DC voltage, which is adjusted, by inner setting computing makes wireless charging reception whole The output of flow module 30 is slightly above the charging voltage of battery real-time voltage, here, charging voltage is higher than the voltage difference of cell voltage most It is preferred that selecting less than or equal to 0.5V, to reduce loss, reduce temperature rise of the battery 10 in charging process, and then cause charge efficiency The high level of comparison is maintained always.Specifically, when voltage difference selection is 0.5V, according to the voltage range of battery 10, output Charge voltage range adjustment be defined between 3.5V ~ 4.8V;Again by taking voltage difference 0.1V as an example, when the voltage for being sampled to battery 10 For 3.5V when, just adjustment output charging voltage be 3.6V, and when the voltage for being sampled to battery 10 be 4V, just adjustment output is charged electric It is exactly in order that charging voltage follows the change of cell voltage and changed to press as 4.1V, this purpose.
In summary, the utility model is taken by battery power management module 40 to the voltage progress detecting real-time of battery 10 Sample and being adjusted according to sampling voltage to the first DC voltage makes wireless charging receive rectification module 30 to export with cell voltage The charging voltage for changing and changing effectively reduces the voltage difference between charging voltage and cell voltage so that battery 10 charges, from And loss is reduced, reduce temperature rise of the battery 10 in charging process, and then improve wireless charging efficiency.
There is described herein preferred embodiment of the present utility model, is used to implement including known to utility model people Optimal mode of the present utility model.It should be understood that shown embodiment is only exemplary, it is not construed as limiting this practicality newly The scope of type, therefore be similarly contained in the equivalent structure change carried out by the utility model specification and accompanying drawing content such as In the scope of the utility model.

Claims (4)

1. a kind of wireless charging receiving terminal, for carrying out wireless charging to the battery of Intelligent mobile equipment, including wireless charging connects Take-up circle, the wireless charging being connected with wireless charging receiving coil receive rectification module, and the wireless charging receives rectification module It is converted into dc source by the AC signal received on wireless charging receiving coil and does step-down rectifier to form the first direct current Pressure, it is characterised in that:The wireless charging receiving terminal further comprises that one is connected to battery and wireless charging reception rectification module Between battery power management module, the battery power management module carries out detecting real-time sampling and foundation to the voltage of battery Sampling voltage is adjusted to the first DC voltage to obtain the charging voltage for changing and changing with cell voltage, the wireless charging Electricity receives rectification module and charging voltage output charges the battery.
2. wireless charging receiving terminal according to claim 1, it is characterised in that:The charging voltage is higher than cell voltage.
3. wireless charging receiving terminal according to claim 1, it is characterised in that:The battery power management module is one MCU micro-control units.
4. wireless charging receiving terminal according to claim 1, it is characterised in that:The wireless charging receive rectification module and Battery power management module is integrated in a chips.
CN201720895426.7U 2017-07-21 2017-07-21 Wireless charging receiving terminal Active CN207117271U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720895426.7U CN207117271U (en) 2017-07-21 2017-07-21 Wireless charging receiving terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720895426.7U CN207117271U (en) 2017-07-21 2017-07-21 Wireless charging receiving terminal

Publications (1)

Publication Number Publication Date
CN207117271U true CN207117271U (en) 2018-03-16

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Application Number Title Priority Date Filing Date
CN201720895426.7U Active CN207117271U (en) 2017-07-21 2017-07-21 Wireless charging receiving terminal

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CN (1) CN207117271U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108448694A (en) * 2018-03-29 2018-08-24 北京小米移动软件有限公司 Wireless charging device, method and device, electronic equipment
CN108805247A (en) * 2018-04-26 2018-11-13 京东方科技集团股份有限公司 Electronic tag, data write-in terminal and electronic labelling system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108448694A (en) * 2018-03-29 2018-08-24 北京小米移动软件有限公司 Wireless charging device, method and device, electronic equipment
CN108805247A (en) * 2018-04-26 2018-11-13 京东方科技集团股份有限公司 Electronic tag, data write-in terminal and electronic labelling system
US10929733B2 (en) 2018-04-26 2021-02-23 Boe Technology Group Co., Ltd. Electronic tag, data writing terminal and electronic tag system

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