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1. WO2020093508 - BIDIRECTIONAL ISOLATED DC/DC CIRCUIT AND CONTROL METHOD THEREFOR

Publication Number WO/2020/093508
Publication Date 14.05.2020
International Application No. PCT/CN2018/120173
International Filing Date 11.12.2018
IPC
H02M 3/335 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
CPC
H02M 2001/0058
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
0048Circuits or arrangements for reducing losses
0054Transistor switching losses
0058by employing soft switching techniques, i.e. commutation of transistor when voltage applied to it is zero and/or when current flowing through it is zero
H02M 3/33569
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
33569having several active switching elements
Applicants
  • 江苏固德威电源科技股份有限公司 JIANGSU GOODWE POWER SUPPLY TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 万建 WAN, Jian
  • 刘滔 LIU, Tao
  • 黄敏 HUANG, Min
  • 方刚 FANG, Gang
  • 卢进军 LU, Jinjun
Agents
  • 苏州创元专利商标事务所有限公司 SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD
Priority Data
201811323153.408.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) BIDIRECTIONAL ISOLATED DC/DC CIRCUIT AND CONTROL METHOD THEREFOR
(FR) CIRCUIT CC-CC ISOLÉ BIDIRECTIONNEL ET SON PROCÉDÉ DE COMMANDE
(ZH) 双向隔离DC/DC电路及其采用的控制方法
Abstract
(EN)
Disclosed is a bidirectional isolated DC/DC circuit, comprising a low voltage side full-bridge structure, a high voltage side full-bridge structure, a transformer (Tx), a resonant inductor (Lr) and a resonant capacitor (Cr), wherein the low voltage side full-bridge structure comprises four low voltage side switch tubes (Q1-Q4), a first low voltage side switch tube (Q1) and a third low voltage side switch tube (Q3) are connected in series to form a low voltage side first bridge arm, and a second low voltage side switch tube (Q2) and a fourth low voltage side switch tube (Q4) are connected in series to form a low voltage side second bridge arm; the high voltage side full-bridge structure comprises four high voltage side switch tubes (Q5-Q8), a first high voltage side switch tube (Q5) and a third high voltage side switch tube (Q7) are connected in series to form a high voltage side first bridge arm, and a second high voltage side switch tube (Q6) and a fourth high voltage side switch tube (Q8) are connected in series to form a high voltage side second bridge arm; and the middle point of the low voltage side first bridge arm and the middle point of the low voltage side second bridge arm are connected to the low voltage side of the transformer (Tx), and the high voltage side of the transformer (Tx) is connected to the middle point of the high voltage side first bridge arm and the middle point of the high voltage side second bridge arm via the resonant capacitor (Cr). The volume and weight of the product can be reduced by using this bidirectional isolated DC/DC circuit, the cost of the system is reduced, and the efficiency and reliability of the system are improved.
(FR)
L'invention concerne un circuit CC/CC isolé bidirectionnel comprenant une structure en pont complet côté basse tension, une structure en pont complet côté haute tension, un transformateur (Tx), une bobine d'induction résonante (Lr) et un condensateur résonant (Cr). La structure en pont complet côté basse tension comprend quatre tubes de commutation côté basse tension (Q1-Q4). Un premier tube de commutation côté basse tension (Q1) et un troisième tube de commutation côté basse tension (Q3) sont connectés en série pour former un premier bras de pont côté basse tension, et un deuxième tube de commutation côté basse tension (Q2) et un quatrième tube de commutation côté basse tension (Q4) sont connectés en série pour former un second bras de pont côté basse tension. La structure en pont complet côté haute tension comprend quatre tubes de commutation côté haute tension (Q5-Q8). Un premier tube de commutation côté haute tension (Q5) et un troisième tube de commutation côté haute tension (Q7) sont connectés en série pour former un premier bras de pont côté haute tension, et un deuxième tube de commutation côté haute tension (Q6) et un quatrième tube de commutation côté haute tension (Q8) sont connectés en série pour former un second bras de pont côté haute tension. Le point central du premier bras de pont côté basse tension et le point central du second bras de pont côté basse tension sont connectés au côté basse tension du transformateur (Tx), et le côté haute tension du transformateur (Tx) est connecté au point central du premier bras de pont côté haute tension et au point central du second bras de pont côté haute tension par l'intermédiaire du condensateur résonant (Cr). Le volume et le poids du produit peuvent être réduits à l'aide du circuit CC/CC isolé bidirectionnel de la présente invention, le coût du système est réduit et l'efficacité et la fiabilité du système sont améliorées.
(ZH)
一种双向隔离DC/DC电路,包括低压侧全桥架构、高压侧全桥架构、变压器(Tx)、谐振电感(Lr)和谐振电容(Cr);低压侧全桥架构包括四个低压侧开关管(Q1-Q4),第一低压侧开关管(Q1)和第三低压侧开关管(Q3)串联构成低压侧第一桥臂,第二低压侧开关管(Q2)和第四低压侧开关管(Q4)串联构成低压侧第二桥臂;高压侧全桥架构包括四个高压侧开关管(Q5-Q8),第一高压侧开关管(Q5)和第三高压侧开关管(Q7)串联构成高压侧第一桥臂,第二高压侧开关管(Q6)和第四高压侧开关管(Q8)串联构成高压侧第二桥臂;低压侧第一桥臂的中点和低压侧第二桥臂的中点连接至变压器(Tx)的低压侧,变压器(Tx)的高压侧经谐振电容(Cr)后连接至高压侧第一桥臂的中点和高压侧第二桥臂的中点。该双向隔离DC/DC电路能够减小产品体积和重量,降低系统的成本,提高系统的效率及可靠性。
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