公开(公告)号：US20130329465A1

公开(公告)日：2013-12-12

申请号：US13914099

申请日：2013-06-10

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

Inventor： Yongjun Hou ,  Xiaohua Yang

IPC: H02M1/14 ,  H02M3/335

CPC classification number: H02M1/14 ,  H02M1/4258 ,  H02M3/33507 ,  H02M2001/0058 ,  Y02B70/126 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A quasi-resonant device for a switching power, a quasi-resonant system for a switching power, and a method for a quasi-resonant control of a switching power are provided. The quasi-resonant device includes: a degaussing time sampling module, configured to sample a degaussing time Tds of a secondary coil of the transformer according to a feedback signal output by the switching power after the switching tube is turned off; a valley sampling module, configured to sample a resonant valley signal of the quasi-resonant module according to the feedback signal; a time producing module, configured to produce a time T with a predetermined ratio D by processing the degaussing time Tds; and a logic processing module, configured to obtain a first valley signal after the time T, and the first valley signal works as a switching signal T′ to turn on the switching tube.

Abstract translation: 提供了一种用于开关电源的准谐振装置，用于开关电源的准谐振系统，以及用于开关电源的准谐振控制的方法。 准谐振装置包括：消磁时间采样模块，被配置为根据在开关管断开之后由开关电源输出的反馈信号对变压器的次级线圈的消磁时间Tds进行采样; 谷值采样模块，被配置为根据反馈信号对准谐振模块的谐振谷值信号进行采样; 时间生成模块，被配置为通过处理消磁时间Tds来产生具有预定比率D的时间T; 以及逻辑处理模块，被配置为在时间T之后获得第一谷值信号，并且所述第一谷值信号作为切换信号T'来导通开关管。

公开(公告)号：US09112407B2

公开(公告)日：2015-08-18

申请号：US13914099

申请日：2013-06-10

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

Inventor： Yongjun Hou ,  Xiaohua Yang

IPC: H02M1/14 ,  H02M3/335 ,  H02M1/42 ,  H02M1/00

CPC classification number: H02M1/14 ,  H02M1/4258 ,  H02M3/33507 ,  H02M2001/0058 ,  Y02B70/126 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A quasi-resonant device for a switching power, a quasi-resonant system for a switching power, and a method for a quasi-resonant control of a switching power are provided. The quasi-resonant device includes: a degaussing time sampling module, configured to sample a degaussing time Tds of a secondary coil of the transformer according to a feedback signal output by the switching power after the switching tube is turned off; a valley sampling module, configured to sample a resonant valley signal of the quasi-resonant module according to the feedback signal; a time producing module, configured to produce a time T with a predetermined ratio D by processing the degaussing time Tds; and a logic processing module, configured to obtain a first valley signal after the time T, and the first valley signal works as a switching signal T′ to turn on the switching tube.

Abstract translation: 提供了一种用于开关电源的准谐振装置，用于开关电源的准谐振系统，以及用于开关电源的准谐振控制的方法。 准谐振装置包括：消磁时间采样模块，被配置为根据在开关管断开之后由开关电源输出的反馈信号对变压器的次级线圈的消磁时间Tds进行采样; 谷值采样模块，被配置为根据反馈信号对准谐振模块的谐振谷值信号进行采样; 时间生成模块，被配置为通过处理消磁时间Tds来产生具有预定比率D的时间T; 以及逻辑处理模块，被配置为在时间T之后获得第一谷值信号，并且所述第一谷值信号作为切换信号T'来导通开关管。

公开(公告)号：US10736242B2

公开(公告)日：2020-08-04

申请号：US16462134

申请日：2017-10-16

Applicant: BYD COMPANY LIMITED

Inventor： Linxia Fang ,  Yin Chen ,  Xiaohua Yang

IPC: H05K7/20 ,  H01L23/473 ,  H01L25/11 ,  H02M7/00

Abstract: A load controller includes a casing; a busbar module, the busbar module including a DC busbar and an AC busbar connected to a load; a capacitor connected to an external DC power supply, the capacitor being connected to the DC busbar; an IGBT power module, an input end of each IGBT being connected to the DC busbar, and an output end of each IGBT being connected to the AC busbar; a heat-dissipating module, the heat-dissipating module including multiple heat-dissipating fins, each IGBT in a same column of IGBTs being sandwiched between adjacent two heat-dissipating fins; a driving circuit board, the driving circuit board being electrically connected to each IGBT; and a control circuit board, the control circuit board being connected to the driving circuit board, where all of the busbar module, the IGBT power module, the heat-dissipating module, the driving circuit board and the control circuit board are disposed on the casing.

公开(公告)号：US09543846B2

公开(公告)日：2017-01-10

申请号：US14654869

申请日：2013-12-25

Applicant: BYD Company Limited

Inventor： Chuhua Hu ,  Xingfu Jiang ,  Xiaohua Yang

IPC: H02M3/335 ,  H05B33/08

CPC classification number: H02M3/33507 ,  H05B33/0815 ,  Y02B20/347

Abstract: A switching power source includes: a dimmer connected to an alternating current power supply and having a plurality of operating modes; a filtering/rectifying module connected to the dimmer to filter an alternating current output from the dimmer to obtain a filtered alternating current and rectify the filtered alternating current into a direct current; a dimmer switching module connected to the dimmer; a control module connected to the filtering/rectifying module and the dimmer switching module, respectively, and configured to detect a current operating mode of the dimmer when the switching power source is powered on, generate a dimmer control signal according to the current operating mode, and control the dimmer switching module to turn on or off according to the dimmer control signal to control the dimmer to enter an operating mode; and a primary constant current circuit connected to the control module and the filtering and rectifying module.

Abstract translation: 开关电源包括：连接到交流电源并具有多个操作模式的调光器; 连接到调光器的滤波/整流模块，用于滤除从调光器输出的交流电流，以获得滤波后的交流电流，并将滤波后的交流电流整流为直流电流; 连接到调光器的调光开关模块; 控制模块分别连接到滤波整流模块和调光器切换模块，并且被配置为当开关电源通电时检测调光器的当前工作模式，根据当前工作模式产生调光控制信号， 并根据调光控制信号控制调光开关模块的接通或断开，以控制调光器进入工作模式; 和连接到控制模块和滤波整流模块的主要恒流电路。

公开(公告)号：US09553520B2

公开(公告)日：2017-01-24

申请号：US14767072

申请日：2014-03-04

Applicant: BYD COMPANY LIMITED

Inventor： Wenhui Ye ,  Xiaohua Yang

IPC: H02M3/335 ,  H02M7/217 ,  H02M1/42 ,  H02M1/00 ,  H03K3/0231

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 outputted 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，被配置为对从AC电源输出的交流电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。