# US 2021/0242687 A1 · Energy efficiency control method, control apparatus, and communications device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242687 A1 - Document ID: US20210242687A1 - Status: Published application - Kind: A1 - Application number: 17/239,079 - Filed: 2021-04-23 - Published: 2021-08-05 - Earliest claimed: 2018-10-25 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Jianhua PENG; Xingjie WANG; Tao FENG - Web page: https://patentgrep.com/patent/US20210242687A1 ## CPC - H02J 1/082: DC supplies with two or more different DC voltage levels - H02J 4/25: for transfer of electric power between AC and DC networks, e.g. for supplying the DC section within a load from an AC mains system - 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 3/1582: {Buck-boost converters (H02M3/1584 takes precedence)} - H04W 52/38: TPC being performed in particular situations - H02J 2105/425: {the loads being an Information and Communication Technology [ICT] facility} - H04W 52/0261: {managing power supply demand, e.g. depending on battery level} - Y02D 30/70: in wireless communication networks - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - 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) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract An energy efficiency control method, where the method is applied to a communications device; the communications device comprises a primary power supply, a secondary power supply, and a control apparatus; and the method includes: obtaining a current load rate of the primary power supply and a load power of the secondary power supply; determining, based on the current load rate of the primary power supply and the load power of the secondary power supply, a target output voltage of the primary power supply and a target input voltage of the secondary power supply that satisfy an energy efficiency requirement of the communications device, where energy efficiency of the communications device is related to the energy efficiency of the primary power supply and the energy efficiency of the secondary power supply; and controlling the primary power supply to output the target output voltage, and controlling an input voltage of the secondary power supply to be the target input voltage. ## Claims ### Claim 1 An energy efficiency control method, wherein the method is applied to a communications device; the communications device comprises a primary power supply, a secondary power supply, and a control apparatus; and the method comprises: obtaining, by the control apparatus, a current load rate of the primary power supply and a load power of the secondary power supply, wherein energy efficiency of the primary power supply is related to the load rate of the primary power supply, and energy efficiency of the secondary power supply is related to the load power of the secondary power supply; determining, by the control apparatus based on the current load rate of the primary power supply and the load power of the secondary power supply, a target output voltage of the primary power supply and a target input voltage of the secondary power supply that satisfy an energy efficiency requirement of the communications device, wherein energy efficiency of the communications device is related to the energy efficiency of the primary power supply and the energy efficiency of the secondary power supply; and controlling, by the control apparatus, the primary power supply to output the target output voltage, and controlling an input voltage of the secondary power supply to be the target input voltage. ### Claim 2 (depends on 1) The method according to claim 1, wherein during the obtaining a current load rate of the primary power supply and a load power of the secondary power supply, the method further comprises: obtaining, by the control apparatus, a current input voltage of the secondary power supply, wherein the energy efficiency of the secondary power supply is related to the input voltage of the secondary power supply at the load power, and the input voltage of the secondary power supply is related to an output voltage of the primary power supply, and ### Claim 3 (depends on 2) The method according to claim 2, wherein the determining, by the control apparatus based on the current load rate of the primary power supply and the load power of the secondary power supply, a target output voltage of the primary power supply and a target input voltage of the secondary power supply that satisfy an energy efficiency requirement of the communications device comprises: determining, by the control apparatus, whether the current load rate of the primary power supply is within a first load rate interval, and determining whether the current input voltage of the secondary power supply is within a first voltage interval at the load power of the secondary power supply, wherein energy efficiency corresponding to the first load rate interval is higher than energy efficiency corresponding to a second load rate interval, and energy efficiency corresponding to the first voltage interval is higher than energy efficiency corresponding to a second voltage interval; and if the current load rate is within the first load rate interval and the current input voltage of the secondary power supply is within the first voltage interval, determining, by the control apparatus, a current output voltage of the primary power supply as the target output voltage of the primary power supply, and determining the current input voltage of the secondary power supply as the target input voltage of the secondary power supply. ### Claim 4 (depends on 3) The method according to claim 3, wherein the method further comprises: if the current load rate is within the first load rate interval and the current input voltage of the secondary power supply is not within the first voltage interval, adjusting, by the control apparatus, the input voltage of the secondary power supply to a first input voltage, wherein the first input voltage is within the first voltage interval; and if a first updated load rate, corresponding to the first input voltage, of the primary power supply is within the first load rate interval after the input voltage of the secondary power supply is adjusted to the first input voltage, determining, by the control apparatus, an output voltage, corresponding to the first updated load rate, of the primary power supply as the target output voltage, and determining the first input voltage as the target input voltage. ### Claim 5 (depends on 4) The method according to claim 4, wherein the method further comprises: if the first updated load rate, corresponding to the first input voltage, of the primary power supply is not within the first load rate interval after the input voltage of the secondary power supply is adjusted to the first input voltage, adjusting a quantity of working sub power supplies in the primary power supply, so that a second updated load rate of the primary power supply is within the first load rate interval. ### Claim 6 (depends on 3) The method according to claim 3, wherein the determining, by the control apparatus based on the current load rate of the primary power supply and the load power of the secondary power supply, a target output voltage of the primary power supply and a target input voltage of the secondary power supply that satisfy an energy efficiency requirement of the communications device comprises: determining, by the control apparatus, whether the current load rate of the primary power supply is within the first load rate interval, wherein the energy efficiency corresponding to the first load rate interval is higher than the energy efficiency corresponding to the second load rate interval; if the current load rate is not within the first load rate interval, adjusting, by the control apparatus, a quantity of working sub power supplies in the primary power supply, so that a third updated load rate of the primary power supply after the working sub power supply adjustment is performed is within the first load rate interval. ### Claim 7 (depends on 6) The method according to claim 6, wherein if a second input voltage, corresponding to the third load rate, of the secondary power supply is within the first voltage interval after the quantity of working sub power supplies is adjusted, determining, by the control apparatus, an output voltage, corresponding to the third updated load rate, of the primary power supply as the target output voltage, and determining the second input voltage as the target input voltage, wherein the energy efficiency corresponding to the first voltage interval is higher than the energy efficiency corresponding to the second voltage interval. ### Claim 8 (depends on 7) The method according to claim 7, wherein the adjusting, by the control apparatus, a quantity of working sub power supplies in the primary power supply, so that a third updated load rate of the primary power supply after the sub power supply adjustment is performed is within the first load rate interval comprises: if the current load rate is greater than a maximum value of the first load rate interval, increasing, by the control apparatus, the quantity of working sub power supplies in the primary power supply, so that a third load rate of the primary power supply after the adjustment is performed falls within the first load rate interval. ### Claim 9 (depends on 7) The method according to claim 7, wherein the adjusting, by the control apparatus, a quantity of working sub power supplies in the primary power supply, so that a third updated load rate of the primary power supply after the sub power supply adjustment is performed is within the first load rate interval comprises: if the current load rate is less than a minimum value of the first load rate interval, decreasing, by the control apparatus, the quantity of working sub power supplies in the primary power supply, so that a third load rate of the primary power supply after the adjustment is performed falls within the first load rate interval. ### Claim 10 (depends on 7) The method according to claim 7, wherein the method further comprises: if the second input voltage of the secondary power supply is not within the first voltage interval after the quantity of working sub power supplies is adjusted, adjusting, by the control apparatus, the input voltage of the secondary power supply to a third input voltage, wherein the third input voltage is within the first voltage interval; and if the third updated load rate of the primary power supply is still within the first load rate interval after the input voltage of the secondary power supply is adjusted to the third input voltage, determining, by the control apparatus, an output voltage corresponding to the third updated load rate as the target output voltage, and determining the third input voltage as the target input voltage. ### Claim 11 (depends on 10) The method according to claim 10, wherein the method further comprises: if the third updated load rate of the primary power supply is not within the first load rate interval after the input voltage of the secondary power supply is adjusted to the third input voltage, performing working sub power supply adjustment on the primary power supply again, so that a fourth updated load rate of the primary power supply after the adjustment is performed falls within the first load rate interval. ### Claim 12 (depends on 3) The method according to claim 3, wherein the method further comprises: determining, by the control apparatus according to a calculation function and based on the current load rate of the primary power supply, the load power of the secondary power supply, and the current input voltage of the secondary power supply, a target output voltage of the primary power supply and a target input voltage of the secondary power supply that are corresponding to best energy efficiency of the communications device. ### Claim 13 A control apparatus, wherein the control apparatus is applied to a communications device; the communication device further comprises a primary power supply and a secondary power supply; and the control apparatus comprises: an obtaining unit, configured to obtain a current load rate of the primary power supply and a load power of the secondary power supply, wherein energy efficiency of the primary power supply is related to the load rate of the primary power supply, and energy efficiency of the secondary power supply is related to the load power of the secondary power supply; a determining unit, configured to determine, based on the current load rate of the primary power supply and the load power of the secondary power supply that are obtained by the obtaining unit, a target output voltage of the primary power supply and a target input voltage of the secondary power supply that satisfy an energy efficiency requirement of the communications device, wherein energy efficiency of the communications device is related to the energy efficiency of the primary power supply and the energy efficiency of the secondary power supply; and a control unit, configured to control the primary power supply to output the target output voltage determined by the determining unit, and control an input voltage of the secondary power supply to be the target input voltage. ### Claim 14 (depends on 13) The control apparatus according to claim 13, wherein the obtaining unit is further configured to obtain a current input voltage of the secondary power supply, wherein the energy efficiency of the secondary power supply is related to the input voltage of the secondary power supply at the load power, and the input voltage of the secondary power supply is related to an output voltage of the primary power supply; and the determining unit is configured to: determine whether the current load rate of the primary power supply is within a first load rate interval, and determine whether the current input voltage of the secondary power supply is within a first voltage interval at the load power of the secondary power supply, wherein energy efficiency corresponding to the first load rate interval is higher than energy efficiency corresponding to a second load rate interval, and energy efficiency corresponding to the first voltage interval is higher than energy efficiency corresponding to a second voltage interval; and if the current load rate is within the first load rate interval and the current input voltage of the secondary power supply is within the first voltage interval, determine a current output voltage of the primary power supply as the target output voltage of the primary power supply, and determine the current input voltage of the secondary power supply as the target input voltage of the secondary power supply. ### Claim 15 (depends on 14) The control apparatus according to claim 14, wherein the determining unit is further configured to: if the current load rate is within the first load rate interval and the current input voltage of the secondary power supply is not within the first voltage interval, adjust the input voltage of the secondary power supply to a first input voltage, wherein the first input voltage is within the first voltage interval; and if a first updated load rate, corresponding to the first input voltage, of the primary power supply is within the first load rate interval after the input voltage of the secondary power supply is adjusted to the first input voltage, determine an output voltage, corresponding to the first updated load rate, of the primary power supply as the target output voltage, and determine the first input voltage as the target input voltage. ### Claim 16 (depends on 14) The control apparatus according to claim 14, wherein the determining unit is configured to: determine whether the current load rate of the primary power supply is within the first load rate interval, wherein the energy efficiency corresponding to the first load rate interval is higher than the energy efficiency corresponding to the second load rate interval; if the current load rate is not within the first load rate interval, adjust a quantity of working sub power supplies in the primary power supply, so that a third updated load rate of the primary power supply after the working sub power supply adjustment is performed is within the first load rate interval; and if a second input voltage, corresponding to the third load rate, of the secondary power supply is within the first voltage interval after the quantity of working sub power supplies is adjusted, determine an output voltage, corresponding to the third updated load rate, of the primary power supply as the target output voltage, and determine the second input voltage as the target input voltage, wherein the energy efficiency corresponding to the first voltage interval is higher than the energy efficiency corresponding to the second voltage interval. ### Claim 17 (depends on 16) The control apparatus according to claim 16, wherein the determining unit is further configured to: if the second input voltage of the secondary power supply is not within the first voltage interval after the quantity of working sub power supplies is adjusted, adjust the input voltage of the secondary power supply to a third input voltage, wherein the third input voltage is within the first voltage interval; and if the third updated load rate of the primary power supply is still within the first load rate interval after the input voltage of the secondary power supply is adjusted to the third input voltage, determine an output voltage corresponding to the third updated load rate as the target output voltage, and determine the third input voltage as the target input voltage. ### Claim 18 (depends on 17) The control apparatus according to claim 17, wherein the determining unit is further configured to: if the third updated load rate of the primary power supply is not within the first load rate interval after the input voltage of the secondary power supply is adjusted to the third input voltage, perform working sub power supply adjustment on the primary power supply again, so that a fourth updated load rate of the primary power supply after the adjustment is performed falls within the first load rate interval.