公开(公告)号：WO2014135060A1

公开(公告)日：2014-09-12

申请号：PCT/CN2014/072844

申请日：2014-03-04

Applicant: SHENZHEN BYD AUTO R&D COMPANY LIMITED ,  BYD COMPANY LIMITED

Inventor： YE, Wenhui ,  YANG, Xiaohua

IPC: H02M7/04 ,  H02M3/335

CPC classification number: H02M3/33523 ,  H02M1/4258 ,  H02M7/2176 ,  H02M2001/0054 ,  H03K3/0231 ,  Y02B70/126 ,  Y02B70/1491

Abstract: A switching power source, a method and a control chip for controlling the same are provided. The switching power source includes: a filtering and rectifying module, connected with an AC power source and configured to filter and rectify an alternating current output from the AC power source to obtain a direct current; a control module, connected with the filtering and rectifying module and configured to obtain an amplitude of the alternating current from the direct current, to adjust a frequency of a control signal according to the amplitude, in which the control module decreases the frequency of the control signal continuously or intermittently when the amplitude increases, and to output the control signal; and a primary constant current circuit, connected with the control module and the filtering and rectifying module respectively, and configured to receive the control signal and to output a constant current according to the control signal.

Abstract translation: 提供了一种开关电源，一种用于控制它的方法和控制芯片。 开关电源包括：滤波整流模块，与AC电源连接，被配置为对交流电源输出的交流电流进行滤波和整流，以获得直流电; 控制模块，与滤波整流模块连接并被配置为从直流电流获得交流电流的幅度，以根据控制模块降低控制频率来调节控制信号的频率 当振幅增加时连续或间歇地发出信号，并输出控制信号; 和主要恒流电路，分别与控制模块和滤波整流模块相连，并配置为接收控制信号并根据控制信号输出恒定电流。

公开(公告)号：EP2564495A1

公开(公告)日：2013-03-06

申请号：EP11800152.8

申请日：2011-06-24

Applicant: BYD Company Limited ,  Shenzhen BYD Auto R&D Company Limited

Inventor： YANG, Xiaohua ,  YE, Wenhui

IPC: H02M1/08

CPC classification number: H02M3/33515 ,  H02M3/157 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A controlling circuit is provided for controlling an output voltage of a main circuit of a switched-mode power supply. The controlling circuit includes components that generate a switching status selecting signal reflecting a voltage change of the main circuit, and output a reference voltage according to a voltage output status selected according to the switching status selecting signal. Other components output a pulse width modulation controlling signal according to the reference voltage and a current signal reflecting a current change of the main circuit, and output a pulse frequency modulation controlling signal with a frequency according to a frequency output status selected according to the switching status selecting signal. Yet other components output a switching controlling signal according to the controlling signals, and control a switch of the main circuit to switch-on or switch off according to the switching controlling signal to stabilize the output voltage of the main circuit.

公开(公告)号：WO2012000407A1

公开(公告)日：2012-01-05

申请号：PCT/CN2011/076336

申请日：2011-06-24

Applicant: BYD COMPANY LIMITED ,  YANG, Xiaohua ,  YE, Wenhui

Inventor： YANG, Xiaohua ,  YE, Wenhui

IPC: H02M1/08

CPC classification number: H02M3/33515 ,  H02M3/157 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A switching power supply control circuit (10) for controlling an output voltage of a main circuit (20) is provided. The switching power supply control circuit (10) comprises: a switching status selecting unit (30), configured to generate a switching status selecting signal according to a voltage feedback signal; a reference voltage generating unit (40), configured to output a reference voltage according to a voltage output status; a first comparator (50), configured to output a PWM controlling signal according to the reference voltage and a current feedback signal; a PFM controlling unit (60), configured to output a PFM controlling signal with a frequency according to a frequency output status; a logic unit (70), configured to output a switching controlling signal according to the PWM controlling signal and the PFM controlling signal; and a driving unit (80), configured to control a power switch of the main circuit (20). A switching power supply control method is also provided. With the switching power supply control circuit and the method, the structure is simplified, and the excellent system stability is obtained.

Abstract translation: 提供一种用于控制主电路（20）的输出电压的开关电源控制电路（10）。 开关电源控制电路（10）包括：开关状态选择单元（30），被配置为根据电压反馈信号产生开关状态选择信号; 参考电压产生单元，被配置为根据电压输出状态输出参考电压; 第一比较器（50），被配置为根据参考电压和电流反馈信号输出PWM控制信号; PFM控制单元，被配置为根据频率输出状态输出具有频率的PFM控制信号; 逻辑单元（70），被配置为根据PWM控制信号和PFM控制信号输出开关控制信号; 以及驱动单元（80），被配置为控制所述主电路（20）的电源开关。 还提供开关电源控制方法。 利用开关电源控制电路和方法，简化了结构，获得了良好的系统稳定性。

公开(公告)号：WO2015090236A1

公开(公告)日：2015-06-25

申请号：PCT/CN2014/094446

申请日：2014-12-19

Applicant: BYD COMPANY LIMITED

Inventor： HOU, Yongjun ,  YE, Wenhui ,  ZHANG, Haiquan

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M1/08 ,  H02M3/335 ,  H02M2001/0032 ,  Y02B70/16

Abstract: An integrated circuit (10) for controlling a switch power supply includes: a primary feedback terminal (101), a primary feedback sampling module (100), an error amplifying module (200), a first control module (300), a secondary control module (400), a secondary feedback terminal (401), a second control module (500), and a driving module (600). The second control module (500) is connected with the first control module (300) and the secondary control module (400) respectively and is configured to generate a logic control signal according to the constant voltage control signal or according to the secondary control signal and the constant voltage control signal. The driving module (600) is connected with the second control module (500) and is configured to generate a driving signal according to the logic control signal and output the driving signal.

Abstract translation: 一种用于控制开关电源的集成电路（10）包括：主反馈端（101），主反馈采样模块（100），误差放大模块（200），第一控制模块（300） 模块（400），次级反馈终端（401），第二控制模块（500）和驱动模块（600）。 第二控制模块（500）分别与第一控制模块（300）和辅助控制模块（400）连接，并且被配置为根据恒定电压控制信号或根据次级控制信号产生逻辑控制信号，以及 恒压控制信号。 驱动模块（600）与第二控制模块（500）连接，并且被配置为根据逻辑控制信号产生驱动信号并输出​​驱动信号。

公开(公告)号：WO2016045628A1

公开(公告)日：2016-03-31

申请号：PCT/CN2015/090805

申请日：2015-09-25

Applicant: BYD COMPANY LIMITED

Inventor： YE, Wenhui ,  HOU, Yongjun ,  ZHANG, Haiquan

IPC: H02M3/335

CPC classification number: H02J7/022 ,  H02J7/045 ,  H02M3/33592 ,  Y02B40/90 ,  Y02B70/1475

Abstract: A secondary control device and a charging system are provided. The secondary control device is connected with a transformer having a secondary winding connected with a charging interface, and includes: a secondary rectifier switch connected with the secondary winding; a secondary synchronous rectifier chip connected with the secondary winding and the secondary rectifier switch, and configured to detect a voltage between two terminals of the secondary rectifier switch, to control the secondary rectifier switch to turn on or turn off according to the voltage, to control the secondary rectifier switch to turn on again when the secondary rectifier switch is in an off-state so as to control the secondary winding to generate a mutation voltage, to obtain a transmission signal on the charging interface, and to control a driving voltage of the secondary rectifier switch according to the transmission signal so as to adjust the mutation voltage.

Abstract translation: 提供二次控制装置和充电系统。 二次控制装置与具有与充电接口连接的次级绕组的变压器连接，并且包括：与次级绕组连接的次级整流开关; 与次级绕组和次级整流开关连接的次级同步整流器芯片，并且被配置为检测次级整流器开关的两个端子之间的电压，以根据电压来控制次级整流器开关导通或关断，以控制 次级整流开关在二次整流开关处于截止状态时再次接通，以控制次级绕组产生突变电压，从而在充电接口上获得发送信号，并控制 二次整流开关根据传输信号调整突变电压。