WO2021129480A1 - 充电电路、电子设备和充电控制方法 - Google Patents
充电电路、电子设备和充电控制方法 Download PDFInfo
- Publication number
- WO2021129480A1 WO2021129480A1 PCT/CN2020/136756 CN2020136756W WO2021129480A1 WO 2021129480 A1 WO2021129480 A1 WO 2021129480A1 CN 2020136756 W CN2020136756 W CN 2020136756W WO 2021129480 A1 WO2021129480 A1 WO 2021129480A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- charging
- module
- output
- current
- charged
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Definitions
- the embodiments of the present invention relate to the field of electronic technology, and in particular to a charging circuit, an electronic device, and a charging control method.
- the half-voltage charging system has high charging efficiency and small thermal effect, and its application range is gradually expanding.
- the energy storage device for half-voltage charging uses capacitors, there are strict requirements on the voltage of the charger input point.
- parallel charging is a relatively straightforward solution.
- the impedance of the two parallel charging branches is required to be strictly the same. Otherwise, according to the fluctuation of the DC resistance, an inverse proportional current will appear. unfair distribution.
- the design of the current charging branch it is difficult to ensure that the path DC resistance is strictly consistent.
- the embodiments of the present invention provide a charging circuit, an electronic device, and a charging control method, so as to solve the problem that the charging branch in the prior art is difficult to ensure consistent impedance, which causes the charging current imbalance of the parallel multi-channel half-voltage charging integrated circuit (Integrated Circuit, IC) The problem.
- IC integrated Circuit
- the present invention is implemented as follows:
- an embodiment of the present invention provides a charging circuit, including:
- n parallel charging branches, and processing modules connected to each of the charging branches, n is a positive integer greater than or equal to 2, and each of the charging branches includes: a charging module, and, with the The control module connected to the charging module;
- the first input terminal of the charging module is used to connect with the charger, and the output terminal is connected with the first input terminal of the control module;
- the first output terminal of the control module is used to connect to the component to be charged, and the second output terminal is connected to the input terminal of the processing module;
- the output terminal of the processing module is connected to the second input terminal of the control module
- the processing module is configured to detect the current output by the charging module, and when the processing module detects that the current output by the charging module is not within the target current range, the control module changes the charging module and The impedance of the line between the components to be charged is such that the current output to the component to be charged is within the target current range.
- an embodiment of the present invention also provides an electronic device, including the charging circuit described in the first aspect.
- an embodiment of the present invention also provides a charging control method, which is applied to the charging circuit as described in the first aspect, and includes:
- the impedance of the line between the charging module and the component to be charged is changed so that the current output to the component to be charged is within the target current range.
- the output current of the charging circuit is within the controllable target current range.
- it can be guaranteed The consistency and controllability of the output current of each charging branch.
- FIG. 1 is a schematic diagram of a charging circuit connected with other components in Embodiment 1 of the present invention
- FIG. 2 is a schematic diagram of a charging circuit connected with other components in the second embodiment of the present invention.
- FIG. 3 is a schematic diagram of a charging circuit connected with other components in Embodiment 3 of the present invention.
- FIG. 4 is a schematic diagram of a charging circuit connected with other components in the fourth embodiment of the present invention.
- Embodiment 5 is a schematic flowchart of a charging control method in Embodiment 5 of the present invention.
- FIG. 6 is a schematic flowchart of a charging control method in Embodiment 6 of the present invention.
- FIG. 1 is a schematic diagram of the charging circuit connected with other components in the first embodiment of the present invention. Taking the charging circuit 2 with two parallel charging branches as an example, the charging circuit includes:
- each of the charging branches includes: a charging module 1 and a control module 202 connected to the charging module ;
- the first input terminal of the charging module 1 is used to connect to the charger 4, and the output terminal is connected to the first input terminal of the control module 202;
- the first output terminal of the control module 202 is used to connect to the component to be charged, and the second output terminal is connected to the input terminal of the processing module 3;
- the output terminal of the processing module 3 is connected to the second input terminal of the control module 202;
- the processing module 3 is used to detect the current output by the charging module 1, and when the processing module 3 detects that the current output by the charging module 1 is not within the target current range, the control module 202 changes The impedance of the line between the charging module 1 and the component to be charged is such that the current output to the component to be charged is within the target current range.
- the output current of the charging module is within the controllable target current range.
- it can ensure that the output current of the charging module is within the controllable target current range. The consistency and controllability of the output current of the charging branch.
- the charging branch further includes: a current detection module 201 connected between the charging module 1 and the processing module 3, In order to convert the output current of the charging module 1 into voltage data, and output to the processing module 3.
- the output current of the charging circuit can be converted into voltage data that can be recognized by the processing module, thereby facilitating the processing of the processing module to determine whether the output current of the charging circuit is within the target current range.
- control module may not be connected to the current detection module, and one end of the charging module may be directly connected to receive the output current of the charging module; it may also be connected to the current detection module to receive the current detection module. The output current detected by the module through the charging module.
- the possibility of arranging the current detection module in the charging module is not ruled out.
- circuit elements used to implement the above-mentioned current detection module 201 and control module 202 are described below with an example.
- the above-mentioned current detection module 201 may be implemented by the following circuit elements, including: a resistor 21, a voltage detection element 22, and an analog-to-digital converter 23;
- the control module 202 includes a digital-to-analog converter 24 and a field effect tube 25;
- One end of the resistor 21 is connected to the charging circuit 1, and the other end is connected to the first pole of the field effect transistor 25;
- the first input end of the voltage detection element 22 is connected to one end of the resistor 21, the second input end is connected to the other end of the resistor 21, and the output end is connected to the input end of the analog-to-digital converter 23;
- the output terminal of the analog-to-digital converter 23 is connected to the input terminal of the processing module 3;
- the input terminal of the digital-to-analog converter 24 is connected to the output terminal of the processing module 3, and the output terminal is connected to the gate of the field effect tube 25;
- the second pole of the field effect transistor 25 is connected to the first output terminal of the control module 202.
- the embodiment of the present invention utilizes the extremely small resistance of the varistor region of the field effect tube, but positively correlates with the Vgs amplitude, realizes milliohm-level path resistance adjustment, and provides a simple, easy-to-implement, and effective charging control that can effectively reduce production costs. Circuit implementation.
- the voltage detection element 22 is a differential amplifier.
- the differential amplifier is used to amplify the detected voltage, which is convenient for the back-end processing of the system, and also effectively balances the performance requirements of the system for various components, and has strong versatility.
- control module 202 further includes: a drive amplifier 26 connected between the digital-to-analog converter 24 and the field effect transistor 25, so The first input terminal of the drive amplifier 26 is connected to the output terminal of the voltage detection element 22, the second input terminal is connected to the output terminal of the digital-to-analog converter 24, and the output terminal is connected to the gate of the field effect tube 25. connection.
- the charging control circuit 2 further includes a rectifier circuit 6.
- One end of the rectifier circuit 6 is connected to the charger 4, and the other end is connected to the The power supply terminal of the voltage detection element 22 is connected to at least one of the power supply terminals of the drive amplifier 26.
- the working performance of the voltage detection element or the amplification factor of the amplifier is improved, the performance requirements of the system for each component are balanced, and the versatility is strong.
- the possibility of setting a current overload protector between the charger and the finishing circuit or the charging circuit is not ruled out.
- the processing module 3 is also connected to the charger 4, and is configured to output voltage control data to the charger 4 and control the charger 4 to adjust the output voltage.
- the output current of the charging circuit is adjusted by controlling the output voltage of the charger.
- An embodiment of the present invention also provides an electronic device, including the charging circuit as described in any one of the first to fourth embodiments.
- the electronic device provided by the embodiment of the present invention provides a parallel multi-channel half-voltage charging circuit, which can dynamically adjust the path impedance within a certain range to realize the controllable current of each path within a certain range and ensure the system current Accuracy, consistency and controllability of distribution.
- FIG. 5 is a schematic flowchart of a charging control method in the fifth embodiment of the present invention, including:
- Step 31 Receive the input output current information of the charging module
- Step 32 When it is detected that the output current exceeds the target current range, change the impedance of the line between the charging module and the component to be charged, so that the current output to the component to be charged is within the target current range.
- the embodiment of the present invention solves the problem of unbalanced and uncontrolled current of the parallel multi-channel half-voltage charging system, and improves the consistency of product charging current.
- the charging module when the output current of the charging module is greater than the first specified upper limit or less than the first specified lower limit, the charging module is turned off, and the charging path where the charging module is located is recorded It is an error sign.
- the circuit whose current value exceeds a specified interval is closed and set, thereby improving the current regulation efficiency of the system.
- the impedance of the line between the charging circuit module and the component to be charged is changed, so that the output is output to the to-be-charged component.
- the current of the component is within the target current range, including:
- the impedance When it is detected that the output current is higher than the upper limit of the target current range, the impedance is increased so that the current output to the component to be charged is within the target current range.
- the embodiment of the present invention adjusts the output current to the target range by changing the impedance of the charging circuit.
- the adjustment method is easy to implement, solves the problem of unbalanced and uncontrolled currents in parallel multi-channel half-voltage charging systems, and improves the consistency of product charging currents. Sex.
- the impedance is lower than the lower limit of impedance adjustment, it is still detected that the output current exceeds the target current range, and voltage control data is sent to the charger for increasing the The output voltage of the charger;
- the embodiment of the present invention communicates with the charger to control the output voltage of the charger to realize the output current adjustment of the circuit.
- the adjustment method is simple and easy to implement, and further optimizes the current adjustment of the parallel multi-channel charging circuit. The way.
- FIG. 6 is a schematic flowchart of a charging control method for adjusting output current through two channels according to the sixth embodiment of the present invention, including:
- Step 300 Judge whether charging is detected, if it is, go to step 301, otherwise go to step 323;
- Step 301 Turn off the two charging circuits, and set the FET charging flag to the charging state
- Step 302 Judge whether the road 1 error sign exists, if yes, go to step 303, otherwise go to step 321;
- Step 303 The processing module outputs the control data to drive the field effect transistor, and opens the charging path 1;
- Step 304 Start the charging circuit
- Step 305 Determine that the output current of the charging circuit is greater than the first specified upper limit or less than the first specified lower limit, if yes, output an error report, turn off the field effect transistor, and stop charging, otherwise go to step 306;
- Step 306 Determine whether the output current is lower than the lower limit of the target current range, if yes, the processing module outputs control data for reducing the impedance to the charging control circuit, otherwise, go to step 307;
- Step 307 Determine whether the control data output by the processing module is greater than the second specified upper limit, if yes, the processing module sends voltage control data to the charger to increase the output voltage of the charger, otherwise go to step 308;
- Step 308 Determine whether the output current is higher than the upper limit of the target current range, if yes, the processing module outputs control data for increasing the impedance to the charging control circuit, otherwise, go to step 309;
- Step 309 Determine whether the control data output by the processing module is less than the second specified lower limit, if yes, the processing module sends voltage control data to the charger for reducing the output voltage of the charger, otherwise, go to step 310;
- Step 310 End current adjustment of path 1;
- Step 311 The processing module outputs the control data to drive the field effect transistor, and opens the charging path 2;
- Step 312 Start the charging circuit
- Step 313 Determine that the output current of the charging circuit is greater than the first specified upper limit or less than the first specified lower limit, if yes, output an error report, turn off the field effect transistor, and stop charging, otherwise go to step 314;
- Step 314 Determine whether the output current is lower than the lower limit of the target current range, if yes, the processing module outputs the control data for reducing the impedance to the charging control circuit, otherwise, go to step 315;
- Step 315 Determine whether the control data output by the processing module is greater than the second specified upper limit, if yes, the processing module sends voltage control data to the charger for increasing the output voltage of the charger, otherwise, go to step 316;
- Step 316 Determine whether the output current is higher than the upper limit of the target current range, if yes, the processing module outputs control data for increasing the impedance to the charging circuit, otherwise, go to step 317;
- Step 317 Determine whether the control data output by the processing module is less than the second specified lower limit, if yes, the processing module sends voltage control data to the charger for reducing the output voltage of the charger, otherwise, go to step 318;
- Step 318 End channel 2 current adjustment
- Step 321 Determine whether the road 2 error sign exists, if it exists, go to step 311, otherwise go to step 322;
- Step 322 Determine whether the path 1 and path 2 error flags exist at the same time, if yes, end the current adjustment, otherwise go to step 300;
- Step 323 Clear the path 1 error flag, path 2 error flag, and charging status flag, and end the current adjustment.
- the charging control method provided in this embodiment provides a solution to the problem of uncontrolled current in the dual-channel half-voltage charging system, and realizes effective control of the current in the charging process.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims (10)
- 一种充电电路,包括:n个并联的充电支路,以及,与每一所述充电支路连接的处理模块,n为大于或等于2的正整数,每一所述充电支路包括:充电模块,以及,与所述充电模块连接的控制模组;所述充电模块的第一输入端用于与充电器连接,输出端与所述控制模组的第一输入端连接;所述控制模组的第一输出端用于与待充电部件连接,第二输出端与所述处理模块的输入端连接;所述处理模块的输出端与所述控制模组的第二输入端连接;所述处理模块,用于检测所述充电模块输出的电流,在所述处理模块检测出所述充电模块输出的电流不在目标电流范围内的情况下,所述控制模组改变所述充电模块与所述待充电部件之间的线路的阻抗,以使得输出至所述待充电部件的电流位于目标电流范围内。
- 根据权利要求1所述的充电电路,其中,所述充电支路还包括:电流检测模组,连接在所述充电模块和所述处理模块之间,用于将所述充电模块的输出电流转化为电压数据,并输出给所述处理模块。
- 根据权利要求2所述的充电电路,其中,所述电流检测模组包括:电阻、电压检测元件和模数转换器;所述控制模组包括:数模转换器和场效应管;所述电阻的一端与所述充电模块连接,另一端与所述场效应管的第一极连接;所述电压检测元件的第一输入端连接所述电阻一端,第二输入端连接所述电阻另一端,输出端与所述模数转换器的输入端连接;所述模数转换器的输出端连接所述处理模块的输入端;所述数模转换器的输入端连接所述处理模块的输出端,输出端连接所述场效应管的栅极;所述场效应管的第二极与所述充电控制电路的第一输出端连接。
- 根据权利要求3所述的充电电路,其中,所述电压检测元件为差分放大器。
- 根据权利要求3所述的充电电路,其中,所述控制模组还包括:驱动放大器,连接于所述数模转换器与所述场效应管之间,所述驱动放大器的第一输入端与所述电压检测元件的输出端连接,第二输入端与所述数模转换器的输出端连接,输出端与所述场效应管的栅极连接。
- 根据权利要求5所述的充电电路,还包括:整流电路,所述整流电路一端用于与充电器连接,另一端与所述电压检测元件的供电端和所述驱动放大器的供电端中的至少之一连接。
- 一种电子设备,包括如权利要求1-6中任一项所述的充电电路。
- 一种充电控制方法,应用于如权利要求1-6中任一项所述的充电电路,包括:接收输入的充电模块的输出电流信息;在检测到所述输出电流超出目标电流范围的情况下,改变充电模块与待充电部件之间的线路的阻抗,使得输出到所述待充电部件的电流位于目标电流范围内。
- 根据权利要求8所述的充电控制方法,还包括:在充电模块的输出电流大于第一指定上限或小于第一指定下限的情况下,关闭所述充电模块,并记录所述充电模块所在的充电通路为错误标志。
- 根据权利要求9所述的充电控制方法,其中,在检测到所述输出电流超出目标电流范围的情况下,改变充电电路模块与待充电部件之间的线路的阻抗,使得输出到所述待充电部件的电流位于目标电流范围内,包括:在检测到所述输出电流低于目标电流范围的下限的情况下,减小所述阻抗,使得输出到所述待充电部件的电流位于目标电流范围内;在检测到所述输出电流高于目标电流范围的上限的情况下,增大所述阻抗,使得输出到所述待充电部件的电流位于目标电流范围内。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911344420.0 | 2019-12-23 | ||
CN201911344420.0A CN111030232B (zh) | 2019-12-23 | 2019-12-23 | 充电电路、电子设备和充电控制方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021129480A1 true WO2021129480A1 (zh) | 2021-07-01 |
Family
ID=70211961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2020/136756 WO2021129480A1 (zh) | 2019-12-23 | 2020-12-16 | 充电电路、电子设备和充电控制方法 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN111030232B (zh) |
WO (1) | WO2021129480A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114256932A (zh) * | 2021-12-27 | 2022-03-29 | 上海商米科技集团股份有限公司 | 一种充电底座的电源分配方法及系统 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111030232B (zh) * | 2019-12-23 | 2022-01-07 | 维沃移动通信有限公司 | 充电电路、电子设备和充电控制方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102710000A (zh) * | 2012-05-21 | 2012-10-03 | 中国电力科学研究院 | 一种电动汽车充电机充电模块的并联均流电路 |
CN103683413A (zh) * | 2013-12-06 | 2014-03-26 | 中南大学 | 一种超级电容储能式城轨车辆充电控制装置及方法 |
CN108631375A (zh) * | 2017-03-20 | 2018-10-09 | 中兴通讯股份有限公司 | 开关的控制方法及电路 |
CN110460138A (zh) * | 2019-09-12 | 2019-11-15 | 欣旺达电子股份有限公司 | 电池模组充电电路及电池模组的充电均衡方法 |
JP2020043720A (ja) * | 2018-09-13 | 2020-03-19 | Tdk株式会社 | 充電制御回路 |
CN111030232A (zh) * | 2019-12-23 | 2020-04-17 | 维沃移动通信有限公司 | 充电电路、电子设备和充电控制方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0336932A (ja) * | 1989-06-29 | 1991-02-18 | Meidensha Corp | 電力貯蔵用電池の充放電装置 |
CN203086213U (zh) * | 2013-02-06 | 2013-07-24 | 深圳市金泰克半导体有限公司 | 一种快速充电器及带有该充电器的移动电源 |
CN103346673B (zh) * | 2013-07-23 | 2015-08-19 | 阳光电源股份有限公司 | 一种多路并联的dc-dc变换器控制系统及方法 |
-
2019
- 2019-12-23 CN CN201911344420.0A patent/CN111030232B/zh active Active
-
2020
- 2020-12-16 WO PCT/CN2020/136756 patent/WO2021129480A1/zh active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102710000A (zh) * | 2012-05-21 | 2012-10-03 | 中国电力科学研究院 | 一种电动汽车充电机充电模块的并联均流电路 |
CN103683413A (zh) * | 2013-12-06 | 2014-03-26 | 中南大学 | 一种超级电容储能式城轨车辆充电控制装置及方法 |
CN108631375A (zh) * | 2017-03-20 | 2018-10-09 | 中兴通讯股份有限公司 | 开关的控制方法及电路 |
JP2020043720A (ja) * | 2018-09-13 | 2020-03-19 | Tdk株式会社 | 充電制御回路 |
CN110460138A (zh) * | 2019-09-12 | 2019-11-15 | 欣旺达电子股份有限公司 | 电池模组充电电路及电池模组的充电均衡方法 |
CN111030232A (zh) * | 2019-12-23 | 2020-04-17 | 维沃移动通信有限公司 | 充电电路、电子设备和充电控制方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114256932A (zh) * | 2021-12-27 | 2022-03-29 | 上海商米科技集团股份有限公司 | 一种充电底座的电源分配方法及系统 |
CN114256932B (zh) * | 2021-12-27 | 2024-04-12 | 上海商米科技集团股份有限公司 | 一种充电底座的电源分配方法及系统 |
Also Published As
Publication number | Publication date |
---|---|
CN111030232A (zh) | 2020-04-17 |
CN111030232B (zh) | 2022-01-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2021129480A1 (zh) | 充电电路、电子设备和充电控制方法 | |
CN203849325U (zh) | 交直流电压隔离差分采样电路 | |
TWI831857B (zh) | 用於調節交換式電源供應器之偏電壓的設備 | |
CN107623968A (zh) | 线电压补偿电路、led驱动系统及驱动方法 | |
US8143880B2 (en) | Dual-range measurement of electrical current | |
CN103607209A (zh) | 直流失调校准系统及直流失调校准方法 | |
WO2019091404A1 (zh) | 均值电流控制方法、装置、系统及计算机可读存储介质 | |
CN104638896B (zh) | 基于bcd工艺的电流钳位电路 | |
CN102332869B (zh) | 高集成度btl音频功率放大器 | |
CN208386501U (zh) | 一种简易数字控制高增益宽带放大器装置 | |
TWI400592B (zh) | 線性穩壓器 | |
WO2023109426A1 (zh) | 一种功率放大器功率调节电路及功率放大器 | |
CN102857211A (zh) | 一种低功耗驱动器及实现低功耗驱动器的方法 | |
US9768630B2 (en) | Real time compensating power output charging circuit | |
US10141839B2 (en) | Voltage controlling circuit of T-CON load variation, display panel and display device | |
CN106604473B (zh) | 可以通过调光关断的led驱动电源 | |
CN202305085U (zh) | 张力传感器 | |
CN103944147B (zh) | 一种开关电源保护电路及其控制方法 | |
CN104734646B (zh) | 应用于多级放大电路的单米勒电容频率补偿方法 | |
CN103389773A (zh) | 电源阵列模拟器的并联均流型快速动态功率调整电路 | |
SE412670B (sv) | Elektrisk forsterkare | |
CN209313724U (zh) | 一种电压转换电路和驱动装置 | |
CN207896706U (zh) | 法拉电容充电电路及电子设备 | |
CN206620105U (zh) | 增益可变的cmos两级运算放大器、芯片 | |
US20160301321A1 (en) | Current regulator with feedback circuit for ac coupling |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20907722 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 20907722 Country of ref document: EP Kind code of ref document: A1 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 20907722 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 03.01.2023) |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 20907722 Country of ref document: EP Kind code of ref document: A1 |