CN112886696A - Standby power supply and control method thereof - Google Patents

Standby power supply and control method thereof Download PDF

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Publication number
CN112886696A
CN112886696A CN201911224444.2A CN201911224444A CN112886696A CN 112886696 A CN112886696 A CN 112886696A CN 201911224444 A CN201911224444 A CN 201911224444A CN 112886696 A CN112886696 A CN 112886696A
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CN
China
Prior art keywords
power supply
voltage
batteries
groups
standby
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Pending
Application number
CN201911224444.2A
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Chinese (zh)
Inventor
李金峰
方良任
朱江
曾勇梅
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201911224444.2A priority Critical patent/CN112886696A/en
Priority to PCT/CN2020/132286 priority patent/WO2021104459A1/en
Publication of CN112886696A publication Critical patent/CN112886696A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Abstract

The embodiment of the application discloses a standby power supply and a control method thereof, which are used for reducing the electric energy loss of the standby power supply so as to save electric energy. The stand-by power supply in the embodiment of the application comprises: n groups of standby batteries, a charging circuit and a control module, wherein N is an integer greater than 1; each group of standby batteries are connected in parallel at two ends of a power supply through a charging circuit, and each group of standby batteries are connected in parallel at two ends of a load; the control module is used for controlling the disconnection of the charging circuit between the M groups of standby batteries and the power supply when the current condition reaches the preset condition, so that the number of groups of standby batteries in a floating charging state is reduced, and the electric energy loss of the standby power supply can be reduced.

Description

Standby power supply and control method thereof
Technical Field
The application relates to the technical field of power supplies, in particular to a standby power supply and a control method thereof.
Background
Normally, the load is directly powered by the power supply. However, there is a possibility of power failure in the power supply, so to ensure uninterrupted power supply to the load, a backup power supply is usually connected in parallel across the load, and when the power supply cannot supply power to the load, the power stored in the backup power supply is used to supply power to the load.
Although the standby power supply can guarantee uninterrupted power supply of the load, when the power supply supplies power to the load, the standby power supply is always in a floating charging state, and in the state, electric energy is lost in the standby power supply, wherein part of the lost electric energy is converted into heat energy, so that the temperature control equipment is also required to cool the standby power supply; in addition, most of the time, the load is supplied by the power supply, that is, the standby power supply is in a floating state most of the time, so that the power loss of the standby power supply is serious.
For this reason, a method is required to reduce the power consumption of the backup power source.
Disclosure of Invention
The embodiment of the application provides a standby power supply and a control method thereof, which are used for reducing the electric energy loss of the standby power supply so as to save electric energy.
A first aspect of the embodiments of the present application provides a backup power supply, including N sets of backup batteries, a charging circuit, and a control module, where N is an integer greater than 1;
each group of standby batteries are connected in parallel at two ends of a power supply through a charging circuit, and each group of standby batteries are connected in parallel at two ends of a load;
the control module is used for controlling the disconnection of a charging circuit between M groups of standby batteries and a power supply when the current condition reaches a preset condition, wherein M is a positive integer smaller than N.
Because the charging circuit corresponding to the M groups of standby batteries is disconnected, the power supply only needs to charge the N-M groups of standby batteries, so that the number of the standby batteries in a floating charging state is reduced, and the electric energy loss of the standby power supply is reduced.
Based on the first aspect, an embodiment of the present application provides a first implementation manner of the first aspect, where the control module is specifically configured to:
when the current condition reaches a preset condition, controlling a charging circuit between the M groups of standby batteries and the power supply to be disconnected in a first time period;
controlling the charging circuit between the M groups of standby batteries and the power supply to be disconnected in a second time period;
the M groups of spare batteries corresponding to the first time period are different from the M groups of spare batteries corresponding to the second time period.
In the embodiment, the M groups of standby batteries disconnected in different time periods are different, so that alternate disconnection of the standby batteries, namely alternate charging of the standby batteries, can be realized.
Based on the first aspect, an embodiment of the present application provides a second implementation manner of the first aspect, where the N-M groups of spare batteries are capacitors.
In this embodiment, since the capacity of the capacitor is generally low, the capacitor is used as an N-M group backup battery that is not disconnected, and power consumption of the backup power supply can be further reduced while ensuring uninterrupted power supply to the load.
Based on the first aspect, the present application provides a third implementation manner of the first aspect, and the battery capacity of any one of the N-M groups of backup batteries is smaller than the battery capacity of any one of the M groups of backup batteries.
The standby battery with lower battery capacity is used as the uninterrupted N-M group standby battery, so that the electric energy loss of the standby power supply can be further reduced while the uninterrupted power supply to the load is ensured.
Based on the first aspect, or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, or the third implementation manner of the first aspect, an embodiment of the present application further provides a fourth implementation manner of the first aspect, and the control module is further configured to:
when the current condition reaches a preset condition, controlling the voltage difference between the power supply and the N-M groups of standby batteries to be a first voltage difference, and in order to reduce the electric energy loss as much as possible, controlling the first voltage difference to be close to 0 or 0;
and when the current condition does not reach the preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference.
Because the first voltage difference is smaller than the second voltage difference, the electric energy loss of the N-M groups of standby batteries in the floating charging state can be further reduced.
Based on the fourth implementation manner of the first aspect, an embodiment of the present application provides a fifth implementation manner of the first aspect, and the control module is configured to:
when the current condition reaches a preset condition, controlling the power supply voltage of the power supply to be a first power supply voltage;
when the current condition does not reach the preset condition, controlling the power supply voltage of the power supply to be a second power supply voltage;
the first supply voltage is less than the second supply voltage.
In this embodiment, the control module reduces the first voltage difference by reducing the supply voltage such that the first voltage difference is less than the second voltage difference.
Based on the fourth implementation manner of the first aspect, an embodiment of the present application provides a sixth implementation manner of the first aspect, and the control module is configured to:
when the current condition reaches a preset condition, controlling the battery voltage of the N-M groups of standby batteries to be a first voltage;
when the current condition does not reach the preset condition, controlling the battery voltage of the N groups of spare batteries to be a second voltage;
the first voltage is greater than the second voltage.
In this embodiment, the first voltage difference is made smaller than the second voltage difference by raising the cell voltages of the N-M groups of backup cells.
A second aspect of the embodiments of the present application provides a backup power supply, including N sets of backup batteries, a charging circuit, and a control module, where N is an integer greater than 1;
each group of standby batteries are connected in parallel at two ends of a power supply through a charging circuit, and each group of standby batteries are connected in parallel at two ends of a load;
the control module is used for:
when the current condition reaches a preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a first voltage difference;
when the current condition does not reach the preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference;
in this embodiment, since the first voltage difference is smaller than the second voltage difference, the power loss when the N groups of the auxiliary batteries are in the float charge state can be reduced.
Based on the second aspect, an embodiment of the present application provides a first implementation manner of the second aspect, and the control module is configured to:
when the current condition reaches a preset condition, controlling the power supply voltage of the power supply to be a first power supply voltage;
when the current condition does not reach the preset condition, controlling the power supply voltage of the power supply to be a second power supply voltage;
the first supply voltage is less than the second supply voltage.
In this embodiment, the control module reduces the first voltage difference by reducing the supply voltage such that the first voltage difference is less than the second voltage difference.
Based on the second aspect, an embodiment of the present application provides a second implementation manner of the second aspect, and the control module is configured to:
when the current condition reaches a preset condition, controlling the battery voltage of the N-M groups of standby batteries to be a first voltage;
when the current condition does not reach the preset condition, controlling the battery voltage of the N groups of spare batteries to be a second voltage;
the first voltage is greater than the second voltage.
In this embodiment, the first voltage difference is made smaller than the second voltage difference by raising the cell voltages of the N groups of backup cells.
In a third aspect of the embodiments of the present application, a method for controlling a standby power supply includes:
the control module determines a current condition;
if the current condition reaches a preset condition, the control module controls a charging circuit between M groups of standby batteries in the N groups of standby batteries and a power supply to be disconnected, wherein M is a positive integer smaller than N;
each group of the N groups of the standby batteries is connected in parallel at two ends of the power supply through the charging circuit, and each group of the standby batteries is connected in parallel at two ends of the load.
Because the charging circuit corresponding to the M groups of standby batteries is disconnected, the power supply only needs to charge the N-M groups of standby batteries, so that the number of the standby batteries in a floating charging state is reduced, and the electric energy loss of the standby power supply is reduced.
Based on the third aspect, an embodiment of the present application provides a first implementation manner of the third aspect, where the controlling, by the control module, the disconnection of the charging circuit between the M groups of spare batteries of the N groups of spare batteries and the power supply includes:
the control module controls a charging circuit between M groups of standby batteries in the N groups of standby batteries and the power supply to be disconnected in a first time period;
the control module controls a charging circuit between M groups of standby batteries in the N groups of standby batteries and the power supply to be disconnected in a second time period;
the M groups of spare batteries corresponding to the first time period are different from the M groups of spare batteries corresponding to the second time period.
In the embodiment, the M groups of standby batteries disconnected in different time periods are different, so that alternate disconnection of the standby batteries, namely alternate charging of the standby batteries, can be realized.
Based on the third aspect, an example of the present application provides a second implementation manner of the third aspect, where the N-M groups of spare batteries are capacitors.
In this embodiment, since the capacity of the capacitor is generally low, the capacitor is used as an N-M group backup battery that is not disconnected, and power consumption of the backup power supply can be further reduced while ensuring uninterrupted power supply to the load.
In a third aspect, the present examples provide a third implementation manner of the third aspect, where the battery capacity of any one of the N-M groups of backup batteries is smaller than the battery capacity of any one of the M groups of backup batteries.
The standby battery with lower battery capacity is used as the uninterrupted N-M group standby battery, so that the electric energy loss of the standby power supply can be further reduced while the uninterrupted power supply to the load is ensured.
Based on the third aspect, or the first implementation manner of the third aspect, or the second implementation manner of the third aspect, or the third implementation manner of the third aspect, an example of the present application further provides a fourth implementation manner of the third aspect, and the control method further includes:
if the current condition reaches a preset condition, controlling the voltage difference between the power supply and the N-M groups of standby batteries to be a first voltage difference;
if the current condition does not reach the preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference;
wherein the first voltage difference is less than the second voltage difference.
Because the first voltage difference is smaller than the second voltage difference, the electric energy loss of the N-M groups of standby batteries in the floating charging state can be further reduced.
Based on the fourth implementation manner of the third aspect, in this application example, a fifth implementation manner of the third aspect is provided, where controlling the voltage difference between the power supply and the N-M groups of backup batteries to be the first voltage difference includes:
controlling the power supply voltage of the power supply to be a first power supply voltage;
controlling the voltage difference between the power supply and the N sets of backup batteries to be a second voltage difference comprises:
controlling the power supply voltage of the power supply to be a second power supply voltage;
the first supply voltage is less than the second supply voltage.
In this embodiment, the control module reduces the first voltage difference by reducing the supply voltage such that the first voltage difference is less than the second voltage difference.
Based on the fourth implementation manner of the third aspect, in this application example, which provides the sixth implementation manner of the third aspect, the controlling the voltage difference between the power supply and the N-M groups of backup batteries to be the first voltage difference includes:
controlling the battery voltage of the N-M groups of spare batteries to be a first voltage;
controlling the voltage difference between the power supply and the N sets of backup batteries to be a second voltage difference comprises:
controlling the battery voltage of the N groups of spare batteries to be a second voltage;
the first voltage is greater than the second voltage.
In this embodiment, the first voltage difference is made smaller than the second voltage difference by raising the cell voltages of the N-M groups of backup cells.
A fourth aspect of the embodiments of the present application provides a method for controlling a standby power supply, including:
the control module determines a current condition;
if the current condition reaches a preset condition, the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a first voltage difference;
if the current condition does not reach the preset condition, the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference;
the first voltage difference is smaller than the second voltage difference, each group of standby batteries in the N groups of standby batteries are connected in parallel at two ends of the power supply through the charging circuit, and each group of standby batteries are connected in parallel at two ends of the load.
In this embodiment, since the first voltage difference is smaller than the second voltage difference, the power loss when the N groups of the auxiliary batteries are in the float charge state can be reduced.
Based on the fourth aspect, an embodiment of the present application provides a first implementation manner of the fourth aspect, where the controlling, by the control module, the voltage difference between the power supply and the N sets of backup batteries to be the first voltage difference includes:
the control module controls the power supply voltage of the power supply to be a first power supply voltage;
the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference, and the control module comprises the following steps:
the control module controls the power supply voltage of the power supply to be a second power supply voltage, and the first power supply voltage is smaller than the second power supply voltage.
In this embodiment, the control module reduces the first voltage difference by reducing the supply voltage such that the first voltage difference is less than the second voltage difference.
Based on the fourth aspect, an embodiment of the present application provides a second implementation manner of the fourth aspect, where the controlling, by the control module, the voltage difference between the power supply and the N sets of backup batteries to be the first voltage difference includes:
the control module controls the battery voltage of the N groups of standby batteries to be a first voltage;
the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference, and the control module comprises the following steps:
the control module controls the battery voltage of the N groups of standby batteries to be a second voltage, and the first voltage is greater than the second voltage.
In this embodiment, the first voltage difference is made smaller than the second voltage difference by raising the cell voltages of the N groups of backup cells.
According to the technical scheme, the embodiment of the application has the following advantages:
each group of standby batteries are connected in parallel at two ends of a power supply through a charging circuit, and each group of standby batteries are connected in parallel at two ends of a load; when the current condition reaches a preset condition, the control module controls a charging circuit between M groups of standby batteries and a power supply to be disconnected, wherein M is a positive integer smaller than N; because the charging circuit corresponding to the M groups of standby batteries is disconnected, the power supply only needs to charge the N-M groups of standby batteries, so that the number of the standby batteries in a floating charging state is reduced, and the electric energy loss of the standby power supply is reduced.
Drawings
FIG. 1 is a schematic diagram of a power supply circuit for a load in an embodiment of the present application;
FIG. 2 is a schematic diagram of an embodiment of a backup power supply in an embodiment of the present application;
fig. 3 is a schematic diagram of an embodiment of a control method of a backup power supply according to an embodiment of the present application;
fig. 4 is a schematic diagram of another embodiment of a control method of a backup power supply according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a standby power supply and a control method thereof, which are used for reducing the electric energy loss of the standby power supply so as to save electric energy.
As shown in fig. 1, a schematic diagram of a power supply circuit of a load in the embodiment of the present application. The power supply circuit comprises a power supply, a standby power supply and a load, wherein the load is a base station in fig. 1, and the standby power supply can comprise one group of standby batteries or a plurality of groups of standby batteries; the power supply, the standby power supply and the load are connected to a common point A through lines, so that the power supply can charge the standby power supply when supplying power to the load, and the standby power supply can supply power to the load when the power supply cannot supply power to the load, thereby realizing uninterrupted power supply. The load may be a base station, and may also be any other element capable of consuming power, which is not limited in this embodiment of the present application.
However, generally, the time for supplying power to the load by using the backup power source is short, so that the backup power source is in a floating charge state in most of the time, power loss is inevitably caused, and a part of the power loss is converted into heat energy, so that extra power is required to supply to the temperature control device, and the temperature of the backup power source is controlled by the temperature control device. In order to reduce the power loss of the backup power source, embodiments of the present application provide a backup power source and a control method thereof, when the backup power source is in a float charging state, one or more sets of backup batteries in the backup power source are disconnected, and/or a float charging voltage difference between a power supply source and the backup power source is reduced, so as to reduce the power loss when the backup power source is in the float charging state.
For better understanding of the technical solution of the embodiment of the present application, please refer to fig. 2, which illustrates an embodiment of a backup power supply in the embodiment of the present application. As shown in fig. 2, the present application provides a first embodiment of a backup power supply, including: n sets of backup batteries 400, a charging circuit, and a control module 100, where N is an integer greater than 1, that is, the backup power source may include one set of backup batteries 400, or may include multiple sets of backup batteries 400, and fig. 2 shows 3 sets of backup batteries.
Each group of the backup batteries 400 is connected in parallel to two ends of the power supply 200 through a charging circuit, and each group of the backup batteries 400 is connected in parallel to two ends of the load 300, it can be understood that the power supply 200 can charge the backup batteries 400 through the charging circuit, and each group of the backup batteries 400 can individually supply power to the load 300.
The control module 100 is configured to control a charging circuit between the M groups of backup batteries 400 and the power supply 200 to be disconnected when the current condition reaches a preset condition, where M is a positive integer smaller than N.
It should be noted that the preset condition may be various, and may specifically be set according to actual needs, for example, the preset condition may be set to that the standby power supply is in a floating charge state, or the preset condition may be set to that the standby power supply is in a floating charge state and continuously floats for X hours, where X may be adjusted according to needs.
In the embodiment of the present application, the backup power source has N groups of backup batteries 400, and the charging circuit between M groups of backup batteries 400 and the power supply 200 is controlled to be disconnected, so that only N-M groups of backup batteries 400 are in the floating state, and compared with the case that N groups of backup batteries 400 are in the floating state, the embodiment of the present application reduces the number of groups of backup batteries 400 in the floating state, thereby reducing the power consumption of the backup power source.
There are various methods for controlling the disconnection of the charging circuit between the M groups of backup batteries 400 and the power supply 200, which are not limited in this embodiment of the present application.
In another embodiment of the backup power supply provided in the embodiment of the present application, the control module 100 is configured to:
when the current condition reaches a preset condition, controlling the charging circuit between the M groups of standby batteries 400 and the power supply 200 to be disconnected in a first time period;
controlling the charging circuit between the M groups of standby batteries 400 and the power supply 200 to be disconnected in a second time period;
wherein the M groups of the backup batteries 400 corresponding to the first period of time are different from the M groups of the backup batteries 400 corresponding to the second period of time.
In the present embodiment, the charging circuit between the M groups of the backup batteries 400 and the power supply 200 is kept open at all times during different periods of time; however, the M groups of backup batteries 400 corresponding to different time periods are different, and specifically, the values of M in different time periods may be different, for example, the M groups of backup batteries 400 corresponding to the first time period are 5 groups of backup batteries 400, and the M groups of backup batteries 400 corresponding to the second time period are 4 groups of backup batteries 400; the backup batteries 400 corresponding to different periods of time are different, for example, the M sets of backup batteries 400 corresponding to the first period of time include a first set of backup batteries, and the M sets of backup batteries 400 corresponding to the second period of time include a second set of backup batteries but do not include the first set of backup batteries.
It can be understood that, the M groups of backup batteries 400 corresponding to the disconnected charging circuit in different time periods are different, and the N-M groups of backup batteries 400 corresponding to the disconnected charging circuit in different time periods are different, so that different groups of backup batteries 400 can be charged in different time periods, and alternate charging of the backup batteries 400 is realized, so that the electric quantity of the backup batteries 400 can be better ensured.
The first time period and the second time period may be set according to actual needs, for example, one cycle may be used, in which the charging circuit between the M groups of the backup batteries 400 and the power supply 200 is disconnected in the first cycle, and the charging circuit between the other M groups of the backup batteries 400 and the power supply 200 is disconnected in the second cycle.
In order to reduce the power loss of the backup power source as much as possible, M may be set to N-1, so that whenever the charging circuit between only 1 set of backup batteries 400 and the power supply 200 is not disconnected, the backup power source can not only supply power to the load 300 in time when the power supply 200 cannot supply power to the load 300, but also further reduce the power loss of the backup power source.
The M-pack secondary batteries 400 with the disconnected charging circuit may be the same as or different from the N-M-pack secondary batteries 400 with the non-disconnected charging circuit. The N-M groups of backup batteries 400 will be described in detail below.
In another embodiment of the backup power supply provided in the embodiment of the present application, the N-M groups of backup batteries 400 are capacitors, and it can be understood that the capacitors are used as energy storage elements and can function as the backup batteries 400, but the capacity of the capacitors is generally smaller than the battery capacity of the backup batteries 400, so that the power loss of the backup power supply can be further reduced while the load 300 is continuously supplied with power.
In another embodiment of a backup power supply provided by the embodiments of the present application, the battery capacity of any one of the N-M sets of backup batteries 400 is smaller than the battery capacity of any one of the M sets of backup batteries 400.
It can be understood that the battery capacity of any one of the N-M groups of backup batteries 400 is smaller, so that the power consumption of the backup power supply can be further reduced while the load 300 is continuously supplied with power.
In the foregoing embodiments, the number of the sets of the backup batteries 400 in the float state is reduced by disconnecting the charging circuit of the M sets of the backup batteries 400, so that the power consumption of the backup power supply can be reduced.
In another embodiment of the backup power supply provided in the embodiment of the present application, the control module 100 is further configured to:
when the current condition reaches a preset condition, controlling the voltage difference between the power supply 200 and the N-M groups of the backup batteries 400 to be a first voltage difference;
when the current condition does not reach the preset condition, controlling the voltage difference between the power supply 200 and the N groups of standby batteries 400 to be a second voltage difference;
wherein the first voltage difference is less than the second voltage difference.
It can be understood that the power loss is related to the voltage difference between the power supply 200 and the N-M sets of backup batteries 400, so in this embodiment of the application, if the current condition reaches the preset condition, the control module 100 controls the voltage difference between the power supply 200 and the N-M sets of backup batteries 400 to be reduced, thereby further reducing the power loss of the backup power; in order to make the power loss of the backup power supply as low as possible, the first voltage difference may be close to 0, or may be 0.
There are various methods for controlling the voltage difference between the power supply 200 and the N-M groups of the backup batteries 400 to be reduced by the control module 100, which are not limited in the embodiment of the present application, and two methods for reducing the voltage difference between the power supply and the N-M groups of the backup batteries 400 will be described below.
In another embodiment of the backup power supply provided in the embodiment of the present application, the control module 100 is configured to:
when the current condition reaches a preset condition, controlling the power supply voltage of the power supply 200 to be a first power supply voltage, wherein the first power supply voltage may be close to the battery voltage of the standby power supply or may be the battery voltage of the standby power supply;
when the current condition does not reach the preset condition, controlling the power supply voltage of the power supply 200 to be a second power supply voltage;
the first supply voltage is less than the second supply voltage.
In the embodiment of the application, the first power supply voltage when the current condition reaches the preset condition is smaller than the second power supply voltage when the current condition does not reach the preset condition, so that under the condition that the battery voltages of the standby power supply are the same, the first voltage difference when the current condition reaches the preset condition is smaller than the second voltage difference when the current condition does not reach the preset condition, and therefore the electric energy loss of the standby power supply can be further reduced.
In the above embodiment, the voltage difference between the power supply 200 and the backup power supply is reduced by lowering the power supply voltage, and besides, the voltage difference between the power supply 200 and the backup power supply can be reduced by raising the battery voltage of the backup power supply, which will be described in detail below.
In another embodiment of the backup power supply provided in the embodiment of the present application, the control module 100 is configured to:
when the current condition reaches a preset condition, controlling the battery voltage of the N-M groups of the backup batteries 400 to be a first voltage, wherein the first voltage can be close to the power supply voltage of the power supply 200 or can be the power supply voltage of the power supply 200;
when the current condition does not reach the preset condition, controlling the battery voltage of the N groups of spare batteries 400 to be a second voltage;
the first voltage is greater than the second voltage.
In the embodiment of the present application, the battery voltage when the current condition reaches the preset condition is larger than the battery voltage when the current condition does not reach the preset condition, so that under the condition that the power supply voltages of the power supply 200 are the same, the first voltage difference when the current condition reaches the preset condition is smaller than the second voltage difference when the current condition does not reach the preset condition, and thus the power loss of the standby power supply can be further reduced.
It should be noted that the process of controlling the battery voltage of the backup battery 400 by the control module 100 may include: the control module 100 sends a control command to the backup battery 400 to instruct the backup battery 400 to adjust the battery voltage, so that the backup battery 400 needs to be a battery capable of adjusting the battery voltage, for example, the backup battery 400 may be a lithium battery.
In addition, in each of the foregoing embodiments, the control module 100 may be separately disposed, may be disposed in the load 300, or may be disposed in the power supply 200, which is not limited in this embodiment.
In the foregoing embodiment, in order to reduce the power loss of the backup power supply, the voltage difference between the power supply 200 and the backup power supply is reduced while the charging circuit of the M sets of backup batteries 400 is turned off, and in addition, the power loss of the backup power supply may be reduced by only reducing the voltage difference between the power supply 200 and the backup power supply. This will be described in detail below.
The embodiment of the present application further provides a second embodiment of a backup power supply, where the structure of the backup power supply in this embodiment may be the same as that of the backup power supply shown in fig. 2, and also includes N sets of backup batteries 400, a charging circuit, and a control module 100, where N is an integer greater than 1;
each set of backup batteries 400 is connected in parallel to both ends of the power supply 200 through a charging circuit, and each set of backup batteries 400 is connected in parallel to both ends of the load 300.
Unlike the first embodiment, in the embodiment of the present application, the control module 100 is configured to:
when the current condition reaches a preset condition, controlling the voltage difference between the power supply 200 and the N groups of standby batteries 400 to be a first voltage difference; in order to make the power loss of the standby power supply as low as possible, the first voltage difference may be close to 0, or may be 0;
when the current condition does not reach the preset condition, controlling the voltage difference between the power supply 200 and the N groups of standby batteries 400 to be a second voltage difference;
wherein the first voltage difference is less than the second voltage difference.
It can be understood that, in the embodiment of the present application, the charging circuit of the backup battery 400 is not disconnected, and the power loss of the backup power supply when the current condition reaches the preset condition is mainly reduced by reducing the voltage difference between the N sets of power supplies 200 and the N sets of backup batteries 400.
Similarly, the preset condition may be multiple, and may specifically be set according to actual needs, for example, the preset condition may be set to that the backup power source is in a floating charge state, or the preset condition may be set to that the backup power source is in a floating charge state and continuously floats for X hours, where X may be adjusted according to needs.
As in the previous embodiments, there are various methods for reducing the voltage difference between the power supply 200 and the N sets of backup batteries 400 by the control module 100, which are not limited in this embodiment of the application, and two methods for reducing the voltage difference between the power supply and the N sets of backup batteries 400 will be described below.
In another embodiment of the backup power supply provided in the embodiment of the present application, the control module 100 is configured to:
when the current condition reaches a preset condition, controlling the power supply voltage of the power supply 200 to be a first power supply voltage;
when the current condition does not reach the preset condition, controlling the power supply voltage of the power supply 200 to be a second power supply voltage;
the first supply voltage is less than the second supply voltage.
In the embodiment of the application, the first power supply voltage when the current condition reaches the preset condition is smaller than the second power supply voltage when the current condition does not reach the preset condition, so that under the condition that the battery voltages of the standby power supply are the same, the first voltage difference when the current condition reaches the preset condition is smaller than the second voltage difference when the current condition does not reach the preset condition, and therefore the electric energy loss of the standby power supply can be further reduced.
In the above embodiment, the voltage difference between the power supply 200 and the backup power supply is reduced by lowering the power supply voltage, and besides, the voltage difference between the power supply 200 and the backup power supply can be reduced by raising the battery voltage of the backup power supply, which will be described in detail below.
In another embodiment of the backup power supply provided in the embodiment of the present application, the control module 100 is configured to:
when the current condition reaches a preset condition, controlling the battery voltage of the N-M groups of standby batteries 400 to be a first voltage;
when the current condition does not reach the preset condition, controlling the battery voltage of the N groups of spare batteries 400 to be a second voltage;
the first voltage is greater than the second voltage.
In the embodiment of the present application, the battery voltage when the current condition reaches the preset condition is larger than the battery voltage when the current condition does not reach the preset condition, so that under the condition that the power supply voltages of the power supply 200 are the same, the first voltage difference when the current condition reaches the preset condition is smaller than the second voltage difference when the current condition does not reach the preset condition, and thus the power loss of the standby power supply can be further reduced.
It should be noted that the process of controlling the battery voltage of the backup battery 400 by the control module 100 may include: the control module 100 sends a control command to the backup battery 400 to instruct the backup battery 400 to adjust the battery voltage, so that the backup battery 400 needs to be a battery capable of adjusting the battery voltage, for example, the backup battery 400 may be a lithium battery.
In addition, in each of the foregoing embodiments, the control module 100 may be separately disposed, may be disposed in the load 300, or may be disposed in the power supply 200, which is not limited in this embodiment.
According to the foregoing embodiments, both the first embodiment and the second embodiment of the backup power supply can reduce the power consumption, and since the power consumption of the backup power supply is reduced, the generated heat energy consumption is also reduced, and accordingly, the power required by the temperature control device to realize temperature control is also reduced, so that the purpose of saving energy can be further achieved.
The above description specifically describes the backup power supply in the embodiment of the present application, and the following description specifically describes a control method of the backup power supply.
Referring to fig. 3, a schematic diagram of an embodiment of a method for controlling a standby power supply according to an embodiment of the present application is shown; as shown in fig. 3, an embodiment of the present application provides an embodiment of a method for controlling a standby power supply, including:
301, the control module determines the current conditions.
The current condition may be whether the standby power supply is in a floating state, or whether the standby power supply is in a floating state and continuously floats for X hours, where X may be adjusted as needed.
302, if the current condition reaches a preset condition, the control module controls the charging circuit between M groups of standby batteries of the N groups of standby batteries and the power supply to be disconnected, where M is a positive integer smaller than N.
Each group of the N groups of the standby batteries is connected in parallel at two ends of the power supply through the charging circuit, and each group of the standby batteries is connected in parallel at two ends of the load.
It should be noted that the control method in the embodiment of the present application is the same as that in the first embodiment of the standby power supply corresponding to fig. 2, and the control process of the control module may specifically refer to the relevant description in the first embodiment corresponding to fig. 2 to understand the control method in the embodiment of the present application.
In the embodiment of the application, the standby power supply has N groups of standby batteries, the charging circuit between M groups of standby batteries and the power supply is controlled to be disconnected, only the N-M groups of standby batteries are in a floating charging state, and compared with the condition that the N groups of standby batteries are in the floating charging state, the number of the standby batteries in the floating charging state is reduced, so that the electric energy loss of the standby power supply can be reduced.
There are various methods for controlling the disconnection of the charging circuit between the M groups of backup batteries and the power supply, which are not limited in the embodiments of the present application.
In another embodiment of the method for controlling a backup power supply provided in the embodiment of the present application, the controlling, by a control module, a charging circuit between M groups of backup batteries of N groups of backup batteries and a power supply is disconnected includes:
the control module controls a charging circuit between M groups of standby batteries in the N groups of standby batteries and the power supply to be disconnected in a first time period;
the control module controls a charging circuit between M groups of standby batteries in the N groups of standby batteries and the power supply to be disconnected in a second time period;
the M groups of spare batteries corresponding to the first time period are different from the M groups of spare batteries corresponding to the second time period.
In the embodiment of the present application, a process of controlling disconnection of the charging circuit between M groups of backup batteries of the N groups of backup batteries and the power supply is the same as a process of controlling disconnection of the charging circuit between M groups of backup batteries and the power supply in the first embodiment of the backup power supply corresponding to fig. 2, and can be understood by referring to the related description in the first embodiment corresponding to fig. 2.
In another embodiment of the control method for a backup power supply provided in the embodiment of the present application, the N-M groups of backup batteries are capacitors.
In another embodiment of the control method for a backup power supply provided in the embodiment of the present application, the battery capacity of any one of N-M sets of backup batteries is smaller than the battery capacity of any one of M sets of backup batteries.
As shown in fig. 3, in another embodiment of the control method for a standby power supply provided in the embodiment of the present application, the control method further includes:
303, if the current condition reaches a preset condition, controlling the voltage difference between the power supply and the N-M groups of standby batteries to be a first voltage difference;
304, if the current condition does not reach the preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference;
wherein the first voltage difference is less than the second voltage difference.
In this embodiment of the present application, if the current condition reaches the preset condition, the control module controls the voltage difference between the power supply and the N-M groups of backup batteries to decrease, so as to further decrease the power consumption of the backup power, where a process of controlling the voltage difference between the power supply and the N-M groups of backup batteries to decrease is the same as that in the first embodiment of the backup power corresponding to fig. 2, and the process of controlling the control module to decrease the voltage difference between the power supply and the N-M groups of backup batteries is the same, and can be specifically understood with reference to the related description in the first embodiment corresponding to fig. 2.
In another embodiment of the method for controlling a standby power supply provided in an embodiment of the present application, controlling a voltage difference between the power supply and the N-M groups of standby batteries to be a first voltage difference includes:
controlling the power supply voltage of the power supply to be a first power supply voltage, wherein the first power supply voltage can be close to the battery voltage of the standby power supply and can also be the battery voltage of the standby power supply;
controlling the voltage difference between the power supply and the N sets of backup batteries to be a second voltage difference comprises:
controlling the power supply voltage of the power supply to be a second power supply voltage;
the first supply voltage is less than the second supply voltage.
In the embodiment of the application, the first power supply voltage when the current condition reaches the preset condition is smaller than the second power supply voltage when the current condition does not reach the preset condition, so that under the condition that the battery voltages of the standby power supply are the same, the first voltage difference when the current condition reaches the preset condition is smaller than the second voltage difference when the current condition does not reach the preset condition, and therefore the electric energy loss of the standby power supply can be further reduced.
In another embodiment of the method for controlling a backup power supply provided in the embodiment of the present application, controlling a voltage difference between a power supply and N-M sets of backup batteries to be a first voltage difference includes:
controlling the battery voltage of the N-M groups of spare batteries to be a first voltage, wherein the first voltage can be close to the power supply voltage of a power supply and can also be the power supply voltage of the power supply;
controlling the voltage difference between the power supply and the N sets of backup batteries to be a second voltage difference comprises:
controlling the battery voltage of the N groups of spare batteries to be a second voltage;
the first voltage is greater than the second voltage.
In the embodiment of the application, the battery voltage when the current condition reaches the preset condition is larger than the battery voltage when the current condition does not reach the preset condition, so that under the condition that the power supply voltage of the power supply is the same, the first voltage difference when the current condition reaches the preset condition is smaller than the second voltage difference when the current condition does not reach the preset condition, and therefore the electric energy loss of the standby power supply can be further reduced.
In the foregoing embodiment, in order to reduce the power loss of the backup power supply, the charging circuit of the M sets of backup batteries is turned off and the voltage difference between the power supply and the backup power supply is reduced. This will be described in detail below.
Referring to fig. 4, a schematic diagram of another embodiment of a method for controlling a standby power supply according to an embodiment of the present application is shown; as shown in fig. 4, an embodiment of the present application provides another embodiment of a method for controlling a standby power supply, including:
401, the control module determines the current conditions;
the current condition may be whether the standby power supply is in a floating state, or whether the standby power supply is in a floating state and continuously floats for X hours, where X may be adjusted as needed.
402, if the current condition reaches a preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a first voltage difference by the control module;
403, if the current condition does not reach the preset condition, the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference;
the first voltage difference is smaller than the second voltage difference, each group of standby batteries in the N groups of standby batteries are connected in parallel at two ends of the power supply through the charging circuit, and each group of standby batteries are connected in parallel at two ends of the load.
In the embodiment of the present application, the charging circuit of the standby battery is not disconnected, and the power loss of the standby power supply when the current condition reaches the preset condition is reduced mainly by reducing the voltage difference between the N sets of power supplies and the N sets of standby batteries.
Similarly, the preset condition may be multiple, and may specifically be set according to actual needs, for example, the preset condition may be set to that the backup power source is in a floating charge state, or the preset condition may be set to that the backup power source is in a floating charge state and continuously floats for X hours, where X may be adjusted according to needs.
It should be noted that the control method in the embodiment of the present application is the same as that in the second embodiment of the standby power supply corresponding to fig. 2, and specifically, the control method in the embodiment of the present application can be understood with reference to the relevant description in the second embodiment corresponding to fig. 2.
In another embodiment of the control method for a backup power supply provided in the embodiment of the present application, the controlling a voltage difference between a power supply and N sets of backup batteries to be a first voltage difference by a control module includes:
the control module controls the power supply voltage of the power supply to be a first power supply voltage;
the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference, and the control module comprises the following steps:
the control module controls the power supply voltage of the power supply to be a second power supply voltage, and the first power supply voltage is smaller than the second power supply voltage.
In the embodiment of the application, the first power supply voltage when the current condition reaches the preset condition is smaller than the second power supply voltage when the current condition does not reach the preset condition, so that under the condition that the battery voltages of the standby power supply are the same, the first voltage difference when the current condition reaches the preset condition is smaller than the second voltage difference when the current condition does not reach the preset condition, and therefore the electric energy loss of the standby power supply can be further reduced.
In the above embodiment, the voltage difference between the power supply and the backup power supply is reduced by lowering the power supply voltage, and besides, the voltage difference between the power supply and the backup power supply is reduced by raising the battery voltage of the backup power supply, which will be described in detail below.
In another embodiment of the control method for a backup power supply provided in the embodiment of the present application, the controlling a voltage difference between a power supply and N sets of backup batteries to be a first voltage difference by a control module includes:
the control module controls the battery voltage of the N groups of standby batteries to be a first voltage;
the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference, and the control module comprises the following steps:
the control module controls the battery voltage of the N groups of standby batteries to be a second voltage, and the first voltage is greater than the second voltage.
In the embodiment of the application, the battery voltage when the current condition reaches the preset condition is larger than the battery voltage when the current condition does not reach the preset condition, so that under the condition that the power supply voltage of the power supply is the same, the first voltage difference when the current condition reaches the preset condition is smaller than the second voltage difference when the current condition does not reach the preset condition, and therefore the electric energy loss of the standby power supply can be further reduced.
According to the embodiment, the two control methods of the standby power supply can reduce the electric energy loss, the generated heat energy loss is reduced due to the reduction of the electric energy loss of the standby power supply, correspondingly, the work of the temperature control equipment can be controlled according to the actual heat energy loss, and the electric energy required by the temperature control equipment for realizing temperature control is reduced due to the reduction of the generated heat energy loss, so that the aim of saving energy can be further fulfilled.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims (20)

1. A standby power supply is characterized by comprising N groups of standby batteries, a charging circuit and a control module, wherein N is an integer greater than 1;
each group of the standby batteries is connected in parallel at two ends of a power supply through a charging circuit, and each group of the standby batteries is connected in parallel at two ends of a load;
the control module is used for controlling the disconnection of a charging circuit between M groups of standby batteries and the power supply when the current condition reaches a preset condition, wherein M is a positive integer smaller than N.
2. The backup power supply of claim 1, wherein said control module is configured to:
when the current condition reaches a preset condition, controlling a charging circuit between the M groups of standby batteries and the power supply to be disconnected in a first time period;
controlling a charging circuit between the M groups of standby batteries and the power supply source to be disconnected in a second time period;
the M groups of spare batteries corresponding to the first time period are different from the M groups of spare batteries corresponding to the second time period.
3. The backup power supply of claim 1, wherein said N-M backup batteries are capacitors.
4. The backup power supply of claim 1, wherein the battery capacity of any of said N-M sets of backup batteries is less than the battery capacity of any of said M sets of backup batteries.
5. The backup power supply of any one of claims 1 through 4, wherein the control module is further configured to:
when the current condition reaches a preset condition, controlling the voltage difference between the power supply and the N-M groups of standby batteries to be a first voltage difference;
when the current condition does not reach the preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference;
wherein the first voltage difference is less than the second voltage difference.
6. The backup power supply of claim 5, wherein the control module is configured to:
when the current condition reaches a preset condition, controlling the power supply voltage of the power supply to be a first power supply voltage;
when the current condition does not reach the preset condition, controlling the power supply voltage of the power supply to be a second power supply voltage;
the first supply voltage is less than the second supply voltage.
7. The backup power supply of claim 5, wherein the control module is configured to:
when the current condition reaches a preset condition, controlling the battery voltage of the N-M groups of standby batteries to be a first voltage;
when the current condition does not reach the preset condition, controlling the battery voltage of the N groups of spare batteries to be a second voltage;
the first voltage is greater than the second voltage.
8. A standby power supply is characterized by comprising N groups of standby batteries, a charging circuit and a control module, wherein N is an integer greater than 1;
each group of the standby batteries is connected in parallel at two ends of a power supply through a charging circuit, and each group of the standby batteries is connected in parallel at two ends of a load;
the control module is used for:
when the current condition reaches a preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a first voltage difference;
when the current condition does not reach the preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference;
wherein the first voltage difference is less than the second voltage difference.
9. The backup power supply of claim 8, wherein the control module is configured to:
when the current condition reaches a preset condition, controlling the power supply voltage of the power supply to be a first power supply voltage;
when the current condition does not reach the preset condition, controlling the power supply voltage of the power supply to be a second power supply voltage;
the first supply voltage is less than the second supply voltage.
10. The backup power supply of claim 8, wherein the control module is configured to:
when the current condition reaches a preset condition, controlling the battery voltage of the N-M groups of standby batteries to be a first voltage;
when the current condition does not reach the preset condition, controlling the battery voltage of the N groups of spare batteries to be a second voltage;
the first voltage is greater than the second voltage.
11. A method of controlling a backup power source, comprising:
the control module determines a current condition;
if the current condition reaches a preset condition, the control module controls a charging circuit between M groups of standby batteries in the N groups of standby batteries and the power supply to be disconnected, wherein M is a positive integer smaller than N;
each group of the N groups of the standby batteries is connected in parallel at two ends of a power supply through a charging circuit, and each group of the standby batteries is connected in parallel at two ends of a load.
12. The control method of claim 11, wherein the controlling by the control module the disconnection of the charging circuit between the M groups of the N groups of the backup batteries and the power supply comprises:
the control module controls charging circuits between M groups of standby batteries in the N groups of standby batteries and the power supply to be disconnected in a first time period;
the control module controls charging circuits between M groups of standby batteries in the N groups of standby batteries and the power supply to be disconnected in a second time period;
the M groups of spare batteries corresponding to the first time period are different from the M groups of spare batteries corresponding to the second time period.
13. The control method of claim 11, wherein the N-M groups of backup batteries are capacitors.
14. The control method according to claim 11, wherein the battery capacity of any one of the N-M groups of backup batteries is smaller than the battery capacity of any one of the M groups of backup batteries.
15. The control method according to any one of claims 11 to 14, characterized by further comprising:
if the current condition reaches a preset condition, controlling the voltage difference between the power supply and the N-M groups of standby batteries to be a first voltage difference;
if the current condition does not reach the preset condition, controlling the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference;
wherein the first voltage difference is less than the second voltage difference.
16. The method of claim 15, wherein the controlling the voltage difference between the power supply and the N-M groups of backup batteries to a first voltage difference comprises:
controlling the power supply voltage of the power supply to be a first power supply voltage;
the controlling the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference comprises:
controlling the power supply voltage of the power supply to be a second power supply voltage;
the first supply voltage is less than the second supply voltage.
17. The method of claim 15, wherein the controlling the voltage difference between the power supply and the N-M groups of backup batteries to a first voltage difference comprises:
controlling the battery voltage of the N-M groups of spare batteries to be a first voltage;
the controlling the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference comprises:
controlling the battery voltage of the N groups of standby batteries to be a second voltage;
the first voltage is greater than the second voltage.
18. A method of controlling a backup power source, comprising:
the control module determines a current condition;
if the current condition reaches a preset condition, the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a first voltage difference;
if the current condition does not reach the preset condition, the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference;
the first voltage difference is smaller than the second voltage difference, each group of the N groups of standby batteries is connected in parallel at two ends of a power supply through a charging circuit, and each group of the standby batteries is connected in parallel at two ends of a load.
19. The control method of claim 18, wherein the controlling the voltage difference between the power supply and the N sets of backup batteries to be the first voltage difference by the control module comprises:
the control module controls the power supply voltage of the power supply to be a first power supply voltage;
the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference, and the control module comprises the following steps:
the control module controls the power supply voltage of the power supply to be a second power supply voltage, and the first power supply voltage is smaller than the second power supply voltage.
20. The control method of claim 18, wherein the controlling the voltage difference between the power supply and the N sets of backup batteries to be the first voltage difference by the control module comprises:
the control module controls the battery voltage of the N groups of standby batteries to be a first voltage;
the control module controls the voltage difference between the power supply and the N groups of standby batteries to be a second voltage difference, and the control module comprises the following steps:
the control module controls the battery voltage of the N groups of standby batteries to be a second voltage, and the first voltage is greater than the second voltage.
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CN114865772B (en) * 2022-04-19 2023-01-17 上海百竹成航新能源有限责任公司 Energy storage system and power supply method thereof

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