# US 11,444,546 B2 · Power supply device, charging system and charge scheduling method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,546 B2 - Document ID: US11444546B2 - Status: Granted - Kind: B2 - Application number: 16/851,095 - Filed: 2020-04-17 - Published: 2020-10-22 - Granted: 2022-09-13 - Earliest claimed: 2019-04-18 - Assignees: Delta Electronics (Shanghai) Co., Ltd. - Applicants: Delta Electronics (Shanghai) Co., Ltd. - Inventors: Chao Yan; Hongyang Wu; Liping Sun; Jianjun Ni - Web page: https://patentgrep.com/patent/US11444546B2 ## CPC - H02M 1/12: Arrangements for reducing harmonics from AC input or output - H02M 7/2176: {comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the output} - H02M 1/0043: {Converters switched with a phase shift, i.e. interleaved (non-isolated DC/DC converters H02M3/1586)} - H02M 1/007: {Plural converter units in cascade (push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826)} - H02M 1/4258: {using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage (H02M1/4241 takes precedence)} - H02M 5/14: for conversion between circuits of different phase number - H02M 7/043: {using transformers or inductors only} - H02M 7/06: using discharge tubes without control electrode or semiconductor devices without control electrode - H02M 7/08: arranged for operation in parallel - H02M 7/10: arranged for operation in series, e.g. for multiplication of voltage - H01F 30/04: having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies - H01F 30/12: Two-phase, three-phase or polyphase transformers - H02M: APPARATUS 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 (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract The power supply device includes a first winding, a second winding, a third winding, a fourth winding, a first AC-DC conversion unit, a second AC-DC conversion unit, a first power supply terminal and a second power supply terminal. The first and second windings are disposed on a secondary side of a multi-pulse transformer, and coupled to an input of the first AC-DC conversion unit. The first power supply terminal is coupled to an output of the first AC-DC conversion unit. The third and fourth windings are disposed on the secondary side of the multi-pulse transformer, and coupled to an input of the second AC-DC conversion unit. The second power supply terminal is coupled to an output of the second AC-DC conversion unit. Phases of output voltages of the first winding, the third winding, the second winding and the fourth winding are successively shifted left or successively shifted right for 15°. ## Claims ### Claim 1 A power supply device, comprising: a first winding, a second winding, a third winding, a fourth winding, a first alternating current-direct current (AC-DC) conversion unit, a second AC-DC conversion unit, a first power supply terminal and a second power supply terminal; the first winding and the second winding disposed on a secondary side of a multi-pulse transformer, and coupled to an input of the first AC-DC conversion unit; the first power supply terminal coupled to an output of the first AC-DC conversion unit; the third winding and the fourth winding disposed on the secondary side of the multi-pulse transformer, and coupled to an input of the second AC-DC conversion unit; and the second power supply terminal coupled to an output of the second AC-DC conversion unit; wherein phases of output voltages of the first winding, the third winding, the second winding and the fourth winding are successively increased or decreased by 15°; wherein the first winding and the second winding forms a first winding pair, the third winding and the fourth winding forms a second winding pair, the first winding pair corresponds to the first AC-DC conversion unit, the second winding pair corresponds to the second AC-DC conversion unit, and each of the first winding pair and the second winding pair is in a one-to-one correspondence with a corresponding one of the first AC-DC conversion unit and the second AC-DC conversion unit. ### Claim 2 (depends on 1) The power supply device according to claim 1, wherein the first winding is a star winding; the second winding is a delta winding; the third winding is an epitaxy delta winding decreased by 15° relative to the second winding and the fourth winding is an epitaxy delta winding increased by 15° relative to the second winding. ### Claim 3 (depends on 1) The power supply device according to claim 1, wherein the first AC-DC conversion unit comprises a first rectifier and a second rectifier; an input of the first rectifier is coupled to the first winding; an input of the second rectifier is coupled to the second winding; and an output of the first rectifier and an output of the second rectifier are coupled in series or parallel to form a first port; wherein the first port is coupled to the first power supply terminal, or the first port is coupled to the first power supply terminal through a first direct current-direct current (DC-DC) converter. ### Claim 4 (depends on 1) The power source device according to claim 1, wherein the second AC-DC conversion unit comprises a third rectifier and a fourth rectifier; an input of the third rectifier is coupled to the third winding; an input of the fourth rectifier is coupled to the fourth winding; and an output of the third rectifier and an output of the fourth rectifier are coupled in series or parallel to form a second port; wherein the second port is coupled to the second power supply terminal, or the second port is coupled to the second power supply terminal through a second DC-DC converter. ### Claim 5 (depends on 1) The power supply device according to claim 1, further comprising: a power supply switching unit; wherein the power supply switching unit comprises a first switch component, a second switch component and a third switch component; the first switch component is coupled between a negative pole of the first power supply terminal and a positive pole of the second power supply terminal; the second switch component is coupled between a positive pole of the first power supply terminal and the positive pole of the second power supply terminal; the third switch component is coupled between the negative pole of the first power supply terminal and a negative pole of the second power supply terminal; wherein the second switch component is linked with the third switch component. ### Claim 6 (depends on 1) A charge scheduling method of a charging system, wherein the charging system includes a multi-pulse transformer and a plurality of the power source devices according to claim 1, a primary-side winding of the multi-pulse transformer is coupled to a power grid, and secondary-side windings of the multi-pulse transformer comprise the first winding, the second winding, the third winding and the fourth winding; the method comprising: S1, obtaining the number of the first power supply terminals and the number of the second power supply terminals in working state when receiving a charge request of an equipment to be charged; S2, scheduling a power supply terminal with a less number to charge the equipment to be charged, when the number of the first power supply terminals in working state is not equal to the number of the second power supply terminals in working state; and S3, scheduling one of the first power supply terminal and the second power supply terminal to charge the equipment to be charged, when the number of the first power supply terminals in working state is equal to the number of the second power supply terminals in working state. ### Claim 7 (depends on 6) The charge scheduling method according to claim 6, wherein the step of S3 comprises: obtaining an estimated remaining charge time of each of the first power supply terminals in working state and an estimated remaining charge time of each of the second power supply terminals in working state; scheduling a power supply terminal with less estimated remaining charge time to charge the equipment to be charged. ### Claim 8 (depends on 6) The charge scheduling method according to claim 6, wherein the charging system further comprises a charge scheduling device to execute the charge scheduling method, and the charge scheduling device comprises: a request obtaining module, configured to obtain the number of the first power supply terminals in working state and the number of the second power supply terminals in working state, when receiving a charge request of an equipment to be charged; a first processing module, configured to schedule a power supply terminal with a less number to charge the equipment to be charged, when the number of the first power supply terminals in working state is not equal to the number of the second power supply terminals in working state; and a second processing module, configured to schedule one of the first power supply terminal and the second power supply terminal to charge the equipment to be charged, when the number of the first power supply terminals in working state is equal to the number of the second power supply terminals in working state. ### Claim 9 (depends on 8) The charge scheduling method according to claim 8, wherein the second processing module is configured to obtain an estimated remaining charge time of each of the first power supply terminals in working state and an estimated remaining charge time of each of the second power supply terminals in working state; and schedule a power supply terminal with less estimated remaining charge time to charge the equipment to be charged. ### Claim 10 A power supply device, comprising: P winding pairs, each of the winding pairs consisting of a first winding and a second winding; P AC-DC conversion units, each of the AC-DC conversion units comprising a first input, a second input and an output, wherein the first input is coupled to the first winding of a corresponding winding pair, and the second input is coupled to the second winding of the corresponding winding pair; P power supply terminals, each of the power supply terminals coupled to the output of a corresponding AC-DC conversion unit; wherein a phase shifting angle between the first winding and the second winding in each winding pair is 30°, a phase shifting angle between the first windings in adjacent winding pairs is 360°/12P, a phase shifting angle between the second windings in adjacent winding pairs is 360°/12P, and P is a positive integer larger than or equal to two; wherein each of the winding pairs is in a one-to-one correspondence with a corresponding one of the AC-DC conversion units. ### Claim 11 (depends on 10) The power supply device according to claim 10, wherein each of the AC-DC conversion units comprises a first rectifier and a second rectifier, the first rectifier has the first input, the second rectifier has the second input, and an output of the first rectifier and an output of the second rectifier are coupled in series or parallel to form the output of the AC-DC conversion unit; or, each of the AC-DC conversion units comprises the first rectifier, the second rectifier and a first DC-DC converter, wherein the first rectifier has the first input, the second rectifier has the second input, the output of the first rectifier and the output of the second rectifier are coupled in series or parallel to an input of the first DC-DC converter; or, each of the AC-DC conversion units comprises the first rectifier and a first DC-DC converter, the second rectifier and a second DC-DC converter, wherein the first rectifier has the first input, the output of the first rectifier is coupled to an input of the first DC-DC converter, the second rectifier has the second input, the output of the second rectifier is coupled to an input of the second DC-DC converter, and an output of the first DC-DC converter and an output of the second DC-DC converter are coupled in series or parallel to form the output of the AC-DC conversion unit. ### Claim 12 (depends on 10) A charging system, comprising: M power supply devices according to claim 10, wherein M is a positive integer; and a multi-pulse transformer, a primary-side winding of the multi-pulse transformer coupled to a power grid, and the winding pairs of the M power supply devices disposed on a secondary side of the multi-pulse transformer. ### Claim 13 (depends on 12) The charging system according to claim 12, further comprising: a charge scheduling device, configured to schedule power supply terminals according to a total amount of equipment charged and the amount of pulse waves of the multi-pulse transformer. ### Claim 14 (depends on 13) The charging system according to claim 13, wherein the total amount of the equipment charged is n*P; and the charge scheduling device is configured to schedule the power supply terminals of n power supply devices from the M power supply devices, so as to charge the n*P equipment, wherein n is a positive integer and n≤M. ### Claim 15 (depends on 13) The charging system according to claim 13, wherein the total amount of the equipment charged is n*P+j; and the charge scheduling device is configured to schedule the power supply terminals of n power supply devices from the M power supply devices to charge n*P equipment charged, and j power supply terminals of one power supply device from remained M-n power supply devices to charge remained j equipment charged; wherein n and j are positive integers, n