CN117639200A - Standby power device, control method thereof and storage medium - Google Patents
Standby power device, control method thereof and storage medium Download PDFInfo
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- CN117639200A CN117639200A CN202210960366.8A CN202210960366A CN117639200A CN 117639200 A CN117639200 A CN 117639200A CN 202210960366 A CN202210960366 A CN 202210960366A CN 117639200 A CN117639200 A CN 117639200A
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 230000005059 dormancy Effects 0.000 claims abstract description 31
- 230000007958 sleep Effects 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 abstract description 36
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 84
- 229910052744 lithium Inorganic materials 0.000 description 84
- 230000006870 function Effects 0.000 description 16
- 238000005265 energy consumption Methods 0.000 description 14
- 238000007726 management method Methods 0.000 description 13
- 230000004224 protection Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Classifications
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/36—Arrangements using end-cell switching
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a standby power device, a control method thereof and a storage medium, wherein the control method is applied to the standby power device, the standby power device comprises a battery pack and an upper computer, the battery pack comprises a plurality of battery units which are connected in parallel, the upper computer is electrically connected with the battery pack, and the upper computer is used for selecting at least one battery unit from the plurality of battery units as a main battery and the rest battery units as slave batteries under the condition that the standby power device only discharges, and controlling the discharge of the main battery and the dormancy of the slave batteries. Based on the above, under the condition that the standby device only discharges, the upper computer selects the main battery and the auxiliary battery from the plurality of battery units connected in parallel, and adopts the standby scheme that the upper computer controls the discharge of the main battery and the dormancy of the auxiliary battery, so that the external equipment only obtains the electric energy from the main battery, and the auxiliary battery only maintains basic communication through dormancy, thereby reducing unnecessary battery electric energy loss, improving the battery output efficiency, and prolonging the service life and the reliability of the battery.
Description
Technical Field
The embodiment of the invention relates to the technical field of batteries, in particular to a standby power device, a control method thereof and a storage medium.
Background
Currently, the mainstream lithium battery pack devices in the market are mainly divided into conventional lithium batteries and intelligent lithium batteries. The conventional lithium battery has low cost and large market share, and does not have an energy-saving function. The intelligent lithium battery has stronger function, but the intelligent lithium battery is not specially designed with energy-saving functions on software and hardware for reducing electric energy loss.
The lithium battery is used as a standby energy storage device, and when an external energy supply unit fails, equipment energy supply is completely provided by the lithium battery pack. The lithium battery is required to maintain the operating power consumption inside the battery including power supply such as a relay, DSP (Digital Signal Processing ), GPS (Global Positioning System, global positioning system) tracking, parallel communication, and the like while supplying power to the device. Particularly, when a plurality of groups of lithium batteries are operated in parallel, the problem of high self-power consumption exists.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the invention provides a standby power device, electronic equipment, a control method and a control device of the standby power device and a computer readable storage medium, which can reduce the electric energy consumption of a battery, improve the output efficiency of the battery and prolong the service life of the battery.
In a first aspect, an embodiment of the present invention provides an electrical power generating apparatus, including:
the battery pack comprises a plurality of battery units which are connected in parallel;
and the upper computer is electrically connected with the battery pack, and is used for selecting at least one battery unit from the battery units as a main battery and the rest battery units as auxiliary batteries under the condition that the standby power device only discharges, and controlling the discharging of the main battery and the dormancy of the auxiliary batteries.
In a second aspect, an embodiment of the present invention provides an electronic device, including an electricity-preparing apparatus as described in the first aspect.
In a third aspect, an embodiment of the present invention provides a method for controlling a power backup device, where the power backup device includes a battery pack and an upper computer, the battery pack includes a plurality of battery units connected in parallel with each other, and the upper computer is electrically connected with the battery pack;
the control method comprises the following steps:
selecting at least one battery cell from a plurality of battery cells as a master battery and the remaining battery cells as slave batteries when the standby power device is only discharged;
controlling the discharge of the main battery;
and controlling the slave battery to sleep.
In a fourth aspect, an embodiment of the present invention provides an apparatus for power backup, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the control method as described in the third aspect above when executing the computer program.
In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium storing a computer-executable program for causing a computer to execute the control method according to the above third aspect.
The embodiment of the invention comprises the following steps: the control method of the standby power device is applied to the standby power device, the standby power device comprises a battery pack and an upper computer, the battery pack comprises a plurality of battery units which are connected in parallel, the upper computer is electrically connected with the battery pack, and the upper computer is used for selecting at least one battery unit from the plurality of battery units as a main battery and the rest battery units as auxiliary batteries under the condition that the standby power device only discharges, and controlling the discharge of the main battery and the dormancy of the auxiliary batteries. Based on the above, under the condition that the standby device only discharges, the upper computer selects the main battery and the auxiliary battery from the plurality of battery units connected in parallel, and adopts the standby scheme that the upper computer controls the discharge of the main battery and the dormancy of the auxiliary battery, so that the external equipment only obtains the electric energy from the main battery, and the auxiliary battery only maintains basic communication through dormancy, thereby reducing unnecessary battery electric energy loss, improving the battery output efficiency, and prolonging the service life and the reliability of the battery.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.
Fig. 1 is a schematic structural diagram of an electric power backup device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a lithium battery according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a battery management system according to an embodiment of the present invention;
FIG. 4 is a main flow chart of a control method of a standby power device according to an embodiment of the present invention;
FIG. 5 is a sub-flowchart of a control method of a standby power device according to an embodiment of the present invention;
FIG. 6 is a sub-flowchart of a control method of a standby power device according to another embodiment of the present invention;
FIG. 7 is a sub-flowchart of a control method of a standby power device according to another embodiment of the present invention;
FIG. 8 is a sub-flowchart of a control method of a standby power device according to another embodiment of the present invention;
fig. 9 is a schematic structural diagram of a standby power device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be understood that in the description of the embodiments of the present invention, plural (or multiple) means two or more, and that greater than, less than, exceeding, etc. are understood to not include the present number, and that greater than, less than, within, etc. are understood to include the present number. If any, the terms "first," "second," etc. are used for distinguishing between technical features only, and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Aiming at the problem that the consumption of self electric energy is high when a plurality of groups of lithium batteries are connected in parallel in the prior art, the embodiment of the invention provides a standby electric device, a control method thereof and a storage medium, wherein the control method of the standby electric device is applied to the standby electric device, the standby electric device comprises a battery pack and an upper computer, the battery pack comprises a plurality of battery units which are connected in parallel, the upper computer is electrically connected with the battery pack, and the upper computer is used for selecting at least one battery unit from the plurality of battery units as a main battery and the rest battery units as auxiliary batteries under the condition that the standby electric device only discharges, and controlling the discharging of the main battery and the dormancy of the auxiliary batteries. Based on the above, under the condition that the standby device only discharges, the upper computer selects the main battery and the auxiliary battery from the plurality of battery units connected in parallel, and adopts the standby scheme that the upper computer controls the discharge of the main battery and the dormancy of the auxiliary battery, so that the external equipment only obtains the electric energy from the main battery, and the auxiliary battery only maintains basic communication through dormancy, thereby reducing unnecessary battery electric energy loss, improving the battery output efficiency, and prolonging the service life and the reliability of the battery.
Fig. 1 is a schematic structural diagram of an electric power backup device according to an embodiment of the present invention. The power-backup device comprises an enveloping battery pack and an upper computer, wherein the battery pack comprises a plurality of battery units which are mutually connected in parallel, and the upper computer is electrically connected with the battery pack. Taking a battery unit as a lithium battery as an example, the battery pack comprises a plurality of lithium batteries which are connected in parallel, the upper computer is electrically connected with the plurality of lithium batteries, an energy supply unit outside the standby power device is used for charging the standby power device, the energy supply unit comprises, but is not limited to, commercial power, photovoltaic and new energy, and an energy consumption unit outside the standby power device is electric equipment. The power backup device is charged by the energy supply unit and simultaneously prepares power for the energy consumption unit. The upper computer is a control unit with a monitoring function, and can manage single or even multiple lithium batteries at the same time. The upper computer performs information interaction with the parallel lithium batteries through the communication part 1 according to the service conditions of the energy consumption unit and the energy supply unit, the upper computer performs command issuing, the lithium batteries receive the command, and a series of control such as charging, discharging, address allocation, confirmation of the master lithium battery, the slave lithium battery and the like are performed. The communication part 1 is a communication line supporting communication modes such as CAN/485/SCI, and the host computer and the lithium battery need to be provided with interface modules capable of supporting the formats. It should be noted that the host computer may select one or more of the lithium batteries, and the rest are all the slave lithium batteries.
In an embodiment, as shown in fig. 2, taking a battery unit as a lithium battery as an example, the lithium battery may include a battery pack and a battery management system BMS, where the battery pack and the battery management system BMS are in communication connection, and the battery pack and the battery management system BMS perform information transfer through the communication part 2, and implement battery pack standby power supply by applying bidirectional power conversion. The lithium battery may include an integral package in the form of a material such as lithium cobaltate, lithium manganate, lithium nickel cobalt aluminate, lithium iron phosphate, lithium titanate, and the like. The communication part 2 is a battery cell interface line, and uploads information (voltage, electric quantity, temperature, etc.) of each single battery cell in the battery pack to the battery management system BMS. The bidirectional power conversion can realize the charge and discharge of various ampere currents through the cable.
In one embodiment, as shown in fig. 3, the battery management system includes a main control circuit, a power conversion circuit and a sleep circuit, wherein the power conversion circuit and the sleep circuit are controlled by the main control circuit, and the main control circuit is electrically connected with the upper computer. The main control circuit is a minimum control system which is built by a main control chip (such as a digital signal processing DSP, a programmable array logic FPGA and the like) and a peripheral circuit, is not limited to the peripheral circuit which is expanded for realizing other requirements, and is used as a 'brain' of the whole battery, and is used for receiving information of an upper computer, and sending instructions to the latter to realize control and distribution of a main battery and a slave battery after operation. The power conversion circuit can be various direct current-direct current conversion circuits, and can ensure that the current in the charge and discharge states is kept within a set current limiting point under the control of the main control circuit, so that the battery is prevented from being in an overcurrent operation state for a long time, and the service life and the reliability of the battery are improved. The sleep circuit includes, but is not limited to, a combination of a sleep assist source and a communication interface circuit, i.e., the battery is turned on in sleep mode and only maintains the most basic communication functions.
In an embodiment, under the condition that the energy supply unit works normally, the power supply device is normally powered on the energy consumption unit, the dormant circuit does not work, and other circuits perform their own roles, so that the power consumption in the whole power supply device is higher due to the existence of the power consumption unit in the battery management system. When the standby device is in a discharging State, for example, when the upper computer detects a power-down signal Of the energy supply unit, that is, the energy supply unit stops charging the standby device, at this time, the upper computer may assign an address to each battery unit, sequentially number 1 to N, obtain SOC (State Of Charge) information Of each battery unit, and select one or the first several battery units with the highest SOC as the master battery, and the other battery units as slave batteries. If the SOC of the plurality of battery cells is the same, one or more of the plurality of battery cells may be selected as the master battery through the size sorting of the plurality of battery cell numbers, and the number order may not be limited, so that the master battery and the slave battery may be selected from the plurality of battery cells. After the primary and secondary batteries are selected, the primary battery is operating normally and the secondary battery is dormant. The slave battery stops working through the main control circuit, and activates the dormancy circuit, after the dormancy circuit works, the communication function of the upper computer and the minimum power consumption are maintained, and the upper computer waits to wake up. When the upper computer determines that the main battery cannot be powered on, the power failure can be under-voltage shutdown caused by that the voltage of the battery core is lower than the set protection voltage, or other various protections generated by normal operation of the main battery, the upper computer commands the main battery to become the slave battery, and one other slave battery is reassigned to become the main battery according to the flow. When the upper computer determines that the energy supply unit is powered on, the upper computer exits from the battery, the sleep circuit in the battery stops working, and the power change circuit starts working. When the energy supply unit works normally, all battery units in the battery pack are equally discharged without the principal and subordinate positions, so that the energy consumption unit is powered on.
The battery unit of the invention is provided with an independent dormancy circuit, so that the electric energy consumption of the most basic standby electric device is ensured. The control scheme of main battery standby power and slave battery dormancy is adopted to ensure the main battery standby power. And a master-slave distribution mode of priority of serial numbers and SOC (system on chip) can be adopted, so that reasonable distribution of master-slave batteries is ensured, unnecessary electric energy consumption is avoided, and the service life and reliability of the batteries are improved. Based on the above, under the condition that the standby device only discharges, the upper computer selects the main battery and the auxiliary battery from the plurality of battery units connected in parallel, and adopts the standby scheme that the upper computer controls the discharge of the main battery and the dormancy of the auxiliary battery, so that the external equipment only obtains the electric energy from the main battery, and the auxiliary battery only maintains basic communication through dormancy, thereby reducing unnecessary battery electric energy loss, improving the battery output efficiency, and prolonging the service life and the reliability of the battery.
The embodiment of the invention also provides electronic equipment, which comprises the power backup device.
In an embodiment, the electronic device adopts the power backup device, so the electronic device can also solve the problem of high self-power consumption when a plurality of groups of lithium batteries are in parallel operation in the prior art. According to the electronic equipment, under the condition that the standby power device only discharges, the upper computer selects the main battery and the auxiliary battery from the plurality of parallel battery units, and the standby power scheme that the upper computer controls the discharge of the main battery and the dormancy of the auxiliary battery is adopted, so that the external equipment only obtains electric energy from the main battery, and the auxiliary battery only maintains basic communication through dormancy, thereby reducing unnecessary battery electric energy loss, improving battery output efficiency, and prolonging service life and reliability of the battery.
As shown in fig. 4, the embodiment of the invention also provides a control method of the standby power device, the standby power device comprises a battery pack and an upper computer, the battery pack comprises a plurality of battery units which are connected in parallel, and the upper computer is electrically connected with the battery pack;
the control method includes, but is not limited to, the steps of:
step S401, selecting at least one battery cell from the plurality of battery cells as a master battery and the remaining battery cells as slave batteries when the standby power device is only discharged;
step S402, controlling the discharge of the main battery;
in step S403, control sleeps from the battery.
In an embodiment, under the condition that the standby power device only discharges, the upper computer selects the main battery and the auxiliary battery from the plurality of battery units connected in parallel, and adopts a standby power scheme that the upper computer controls the discharging of the main battery and the dormancy of the auxiliary battery, so that the external equipment only obtains the electric energy from the main battery, and the auxiliary battery only maintains basic communication through dormancy, thereby reducing unnecessary battery electric energy loss, improving battery output efficiency, and prolonging the service life of the battery and the reliability of the battery.
In an embodiment, as shown in fig. 1, when the energy supply unit works normally, the power supply device normally supplies power to the energy consumption unit, the sleep circuit does not work, and other circuits perform their own roles, so that the power consumption in the whole power supply device is higher due to the existence of the power consumption unit in the battery management system. When the standby device is in a discharging State, for example, when the upper computer detects a power-down signal Of the energy supply unit, that is, the energy supply unit stops charging the standby device, at this time, the upper computer may assign an address to each battery unit, sequentially number 1 to N, obtain SOC (State Of Charge) information Of each battery unit, and select one or the first several battery units with the highest SOC as the master battery, and the other battery units as slave batteries. If the SOC of the plurality of battery cells is the same, one or more of the plurality of battery cells may be selected as the master battery through the size sorting of the plurality of battery cell numbers, and the number order may not be limited, so that the master battery and the slave battery may be selected from the plurality of battery cells. After the primary and secondary batteries are selected, the primary battery is operating normally and the secondary battery is dormant. The slave battery stops working through the main control circuit, and activates the dormancy circuit, after the dormancy circuit works, the communication function of the upper computer and the minimum power consumption are maintained, and the upper computer waits to wake up. When the upper computer determines that the main battery cannot be powered on, the power failure can be under-voltage shutdown caused by that the voltage of the battery core is lower than the set protection voltage, or other various protections generated by normal operation of the main battery, the upper computer commands the main battery to become the slave battery, and one other slave battery is reassigned to become the main battery according to the flow. When the upper computer determines that the energy supply unit is powered on, the upper computer exits from the battery, the sleep circuit in the battery stops working, and the power change circuit starts working. When the energy supply unit works normally, all battery units in the battery pack are equally discharged without the principal and subordinate positions, so that the energy consumption unit is powered on.
As shown in fig. 5, step S401 may include, but is not limited to, the following sub-steps:
step S501, obtaining the residual electric quantity information of each battery unit;
step S502, selecting at least one battery unit from a plurality of battery units as a main battery and the rest battery units as slave batteries according to the residual electric quantity information from high to low.
In an embodiment, when the power backup device is in a discharging state, for example, when the upper computer detects a power-down signal of the energy supply unit, that is, the energy supply unit stops charging the power backup device, at this time, the upper computer may allocate an address to each battery unit, sequentially number 1 to N, obtain SOC information of each battery unit, select one or the first several battery units with the highest SOC as the master battery, and the other battery units as slave batteries.
As shown in fig. 6, step S401 may further include, but is not limited to, the following sub-steps:
step S601, numbering the battery units;
step S602, obtaining the residual electric quantity information of each battery unit;
in step S603, when the remaining power information of each battery cell is the same, at least one battery cell is selected as the master battery and the remaining battery cells are selected as the slave batteries from the plurality of battery cells in order of the number.
In an embodiment, when the power backup device is in a discharging state, for example, when the upper computer detects a power-down signal of the energy supply unit, that is, the energy supply unit stops charging the power backup device, at this time, the upper computer may allocate an address to each battery unit, sequentially number 1 to N, obtain SOC information of each battery unit, select one or the first several battery units with the highest SOC as the master battery, and the other battery units as slave batteries. If the SOC of the plurality of battery cells is the same, one or more of the plurality of battery cells may be selected as the master battery through the size sorting of the plurality of battery cell numbers, and the number order may not be limited, so that the master battery and the slave battery may be selected from the plurality of battery cells.
As shown in fig. 7, step S402 may further include, but is not limited to, the following sub-steps:
step S701 of switching the master battery to the slave battery in the case where it is determined that at least one master battery cannot be discharged;
step S702, re-selecting at least one battery cell from the remaining slave batteries as a new master battery.
In an embodiment, in the case that it is determined that at least one of the master batteries cannot be discharged, the upper computer switches the master battery to the slave battery, and reselects at least one battery cell from the remaining slave batteries as a new master battery. The selection modes include, but are not limited to: and selecting one or the first few cells with the highest SOC as a master cell, and other battery cells as slave cells. If the SOC of the plurality of battery cells is the same, one or more of the plurality of battery cells may be selected as the master battery through the size sorting of the plurality of battery cell numbers, and the number order may not be limited, so that the master battery and the slave battery may be selected from the plurality of battery cells.
It should be noted that, the situation that the main battery cannot be discharged includes that the cell parameter of the main battery does not meet the preset condition, for example, the under-voltage shutdown caused by the cell voltage being lower than the set protection voltage, or other various protections generated by the normal operation of the main battery, the host computer commands the main battery to become the slave battery, and one other slave battery is reassigned to become the main battery according to the above procedure.
As shown in fig. 8, the control method of the present invention may further include, but is not limited to, the following steps:
step S801, controlling the slave battery to go out of sleep when the standby power device is both charged and discharged;
in step S802, all the battery cells are controlled to discharge.
In one embodiment, when the standby device is both charged and discharged, for example, when the upper computer determines that the power supply unit is powered on, the standby device is taken out of the battery, the sleep circuit in the battery stops working, and the power change circuit starts working. When the energy supply unit works normally, all battery units in the battery pack are equally discharged without the principal and subordinate positions, so that the energy consumption unit is powered on.
The control method provided in the present application is further described below in connection with specific embodiments.
As shown in fig. 1, taking a long-time power backup device applied to multiple groups of lithium batteries as an example, the power backup device comprises multiple lithium batteries connected in parallel, an upper computer and a communication part. The upper computer is electrically connected with the lithium batteries, and an energy supply unit outside the power preparation device is used for charging the power preparation device and comprises, but not limited to, commercial power, photovoltaic and new energy sources, and an energy consumption unit outside the power preparation device is electric equipment. The power backup device is charged by the energy supply unit and simultaneously prepares power for the energy consumption unit. The upper computer is a control unit with a monitoring function, and can simultaneously manage a single lithium battery or even a plurality of lithium batteries. The upper computer performs information interaction with the parallel lithium batteries through the communication part 1 according to the service conditions of the energy consumption unit and the energy supply unit, the upper computer performs command issuing, the lithium batteries receive the command, and a series of control such as charging, discharging, address allocation, confirmation of the master lithium battery, the slave lithium battery and the like are performed. The communication part 1 is a communication line supporting communication modes such as CAN/485/SCI, and the host computer and the lithium battery need to be provided with interface modules capable of supporting the formats.
As shown in fig. 2, taking a battery unit as a lithium battery as an example, the lithium battery may include a battery pack and a battery management system BMS, where the battery pack and the battery management system BMS are in communication connection, and the battery pack and the battery management system BMS perform information transmission through the communication part 2, and implement battery pack standby power supply by applying bidirectional power conversion. The lithium battery may include an integral package in the form of a material such as lithium cobaltate, lithium manganate, lithium nickel cobalt aluminate, lithium iron phosphate, lithium titanate, and the like. The communication part 2 is a battery cell interface line, and uploads information (voltage, electric quantity, temperature, etc.) of each single battery cell in the battery pack to the battery management system BMS. The bidirectional power conversion can realize the charge and discharge of various ampere currents through the cable.
As shown in fig. 3, the battery management system comprises a main control circuit, a power conversion circuit and a dormancy circuit, wherein the power conversion circuit and the dormancy circuit are controlled by the main control circuit, and the main control circuit is electrically connected with the upper computer. The main control circuit is a minimum control system which is built by a main control chip (such as a digital signal processing DSP, a programmable array logic FPGA and the like) and a peripheral circuit, is not limited to the peripheral circuit which is expanded for realizing other requirements, and is used as a 'brain' of the whole battery, and is used for receiving information of an upper computer, and sending instructions to the latter to realize control and distribution of a main battery and a slave battery after operation. The power conversion circuit can be various direct current-direct current conversion circuits, and can ensure that the current in the charge and discharge states is kept within a set current limiting point under the control of the main control circuit, so that the battery is prevented from being in an overcurrent operation state for a long time, and the service life and the reliability of the battery are improved. The sleep circuit includes but is not limited to a combination of a sleep assist source and a communication interface circuit, i.e., the battery is turned on in sleep mode, the battery only maintains the most basic communication functions, and the internal power consumption can be reduced by 90% compared to the normal mode.
Example 1
The embodiment applies the control method of the long-time power backup device for a plurality of groups of lithium batteries, and the control method comprises the following specific steps:
s0, the energy supply unit works normally, the standby power device realizes standby power in a normal mode, the dormant circuit does not work, and other circuits perform their own functions, and due to the existence of the power consumption unit in the BMS, the whole internal power consumption of the device is higher.
S1, when the upper computer obtains a power-down signal of the energy supply unit, the lithium battery pack enters a sleep mode, the upper computer distributes addresses for each lithium battery, numbers 1 to N, acquires SOC electric quantity information of each battery, designates the highest SOC as the master and the other as the slave, designates the small or large numbered lithium batteries as the master if a plurality of SOCs are the same, and does not limit the numbering sequence, thereby determining master-slave lithium batteries.
S2, the appointed main lithium battery works normally, and the auxiliary lithium battery sleeps. And after receiving the secondary lithium battery entering the standby mode, stopping the power conversion circuit by the main control circuit, and activating the dormancy circuit, maintaining the lowest power consumption and the communication function of the upper computer after the dormancy circuit works, and waiting for the upper computer to wake up.
And S3, after the main lithium battery cannot be powered on, the condition that the battery cannot be powered on can be under-voltage shutdown caused by the fact that the voltage of the battery core is lower than the set protection voltage, or other various protections generated by normal operation of the main lithium battery, the upper computer commands the main lithium battery to become 'from', and one other auxiliary lithium battery is newly designated to become 'from' according to the S1 past rule.
S4, when the upper computer contacts the energy supply unit to be powered on, the upper computer exits from the sleep mode, and the lithium battery has equal status and no master-slave score. All the slave lithium battery pack sleep circuits stop working, and the power change circuit starts working.
Example two
The embodiment applies the control method of the long-time power backup device for a plurality of groups of lithium batteries, and the control method comprises the following specific steps:
s0, the energy supply unit works normally, the standby power device realizes standby power in a normal mode, the dormant circuit does not work, and other circuits perform their own functions, and due to the existence of the power consumption unit in the BMS, the whole internal power consumption of the device is higher.
S1, when an upper computer obtains a power-down signal of an energy supply unit, a lithium battery pack enters a sleep mode, the upper computer distributes addresses for each lithium battery, numbers 1 to N, acquires SOC electric quantity information of each battery, designates the highest SOC as the master and the other as the slave, designates the small or large numbered lithium batteries as the master if a plurality of SOCs are the same, and does not limit the numbering sequence, thereby determining master-slave lithium batteries;
s2, the appointed main lithium battery works normally, and the auxiliary lithium battery sleeps. The secondary lithium battery entering the standby mode is received, the power conversion circuit stops working through the main control circuit, the dormancy circuit is activated, and after the dormancy circuit works, the lowest power consumption and the communication function of the upper computer are maintained, and the upper computer waits for awakening;
and S3, when the upper computer contacts the energy supply unit to be powered on, the upper computer exits from the sleep mode, and the lithium battery has equal status and no master-slave score. All the slave lithium battery pack sleep circuits stop working, and the power change circuit starts working.
Example III
The embodiment applies the control method of the long-time power backup device for a plurality of groups of lithium batteries, and the control method comprises the following specific steps:
s0, the energy supply unit works normally, the standby power device realizes standby power in a normal mode, the dormant circuit does not work, and other circuits perform their own functions, and due to the existence of the power consumption unit in the BMS, the whole internal power consumption of the device is higher.
S1, when an upper computer obtains a power-down signal of an energy supply unit, a lithium battery pack enters a sleep mode, the upper computer distributes addresses for each lithium battery, numbers 1 to N, acquires SOC electric quantity information of each battery, designates the highest SOC as the master and the other as the slave, designates the small or large numbered lithium batteries as the master if a plurality of SOCs are the same, and does not limit the numbering sequence, thereby determining master-slave lithium batteries;
s2, the appointed main lithium battery works normally, and the auxiliary lithium battery sleeps; the slave lithium battery entering the standby mode is received, the power conversion circuit stops working through the main control circuit, the dormancy circuit is activated, and after the dormancy circuit works, the lowest power consumption and the communication function of the upper computer are maintained, and the upper computer is waited for awakening;
and S3, after the main lithium battery cannot be powered on, the condition that the battery cannot be powered on can be under-voltage shutdown caused by the fact that the voltage of the battery core is lower than the set protection voltage, or other various protections generated by normal operation of the main lithium battery, the upper computer commands the main lithium battery to become 'from', and one other auxiliary lithium battery is newly designated to become 'from' according to the S1 past rule. If the power supply incoming call is not detected, the standby device continues to circularly standby power.
Based on the above, the embodiment of the invention can reduce the unnecessary battery power loss by controlling the standby power scheme of the main lithium battery and the standby power scheme of the secondary lithium battery, and has simple and easy control process and wide application range. In addition, the power supply of the device can be greatly prolonged by using a hardware sleep circuit to maintain basic communication from the lithium battery and to draw power from the main lithium battery.
As shown in fig. 9, the embodiment of the invention further provides a power backup device.
Specifically, the power backup device includes: one or more processors and memory, one processor and memory being illustrated in fig. 9. The processor and the memory may be connected by a bus or otherwise, for example in fig. 9.
The memory is used as a non-transitory computer readable storage medium for storing a non-transitory software program and a non-transitory computer executable program, such as the control method in the embodiments of the present invention described above. The processor implements the control method in the above-described embodiments of the present invention by running a non-transitory software program stored in a memory, as well as the program.
The memory may include a memory program area and a memory data area, wherein the memory program area may store an operating system, at least one application program required for a function; the storage data area may store data and the like necessary for performing the control method in the embodiment of the present invention described above. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory remotely located relative to the processor, the remote memory being connectable to the terminal through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The non-transitory software program and the program required for implementing the control method in the embodiment of the present invention are stored in the memory, and when executed by one or more processors, the control method in the embodiment of the present invention is executed, for example, the method steps S401 to S403 in fig. 4, the method steps S501 to S502 in fig. 5, the method steps S601 to S603 in fig. 6, the method steps S701 to S702 in fig. 7, and the method steps S801 to S802 in fig. 8 are executed, so that the upper computer selects the master battery and the slave battery from the plurality of parallel battery units and adopts the standby scheme of controlling the discharge of the master battery and the sleep of the slave battery through the upper computer, so that the external device only obtains the electric energy from the master battery, and the slave battery only maintains the basic communication through the sleep, thereby reducing the unnecessary battery electric energy loss, improving the battery output efficiency, and increasing the service life and the reliability of the battery.
In addition, an embodiment of the present invention further provides a computer-readable storage medium storing a computer-executable program, where the computer-executable program is executed by one or more control processors, for example, by one processor in fig. 9, and the one or more processors are caused to execute the control method in the embodiment of the present invention, for example, execute the method steps S401 to S403 in fig. 4, the method steps S501 to S502 in fig. 5, the method steps S601 to S603 in fig. 6, the method steps S701 to S702 in fig. 7, and the method steps S801 to S802 in fig. 8, where the standby power device is only discharged, and the upper computer selects the master battery and the slave battery from the plurality of parallel battery units, and adopts a standby power scheme of controlling the discharge of the master battery and the sleep of the slave battery by the upper computer, so that the external device only obtains the electric power from the master battery, and the slave battery maintains the basic communication only by the sleep, thereby reducing the non-battery output efficiency and increasing the necessary battery life.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable programs, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable programs, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit and scope of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (10)
1. A standby power device, comprising:
the battery pack comprises a plurality of battery units which are connected in parallel;
and the upper computer is electrically connected with the battery pack, and is used for selecting at least one battery unit from the battery units as a main battery and the rest battery units as auxiliary batteries under the condition that the standby power device only discharges, and controlling the discharging of the main battery and the dormancy of the auxiliary batteries.
2. The power backup device of claim 1 wherein the battery unit comprises a battery pack and a battery management system, the battery pack and the battery management system being communicatively coupled.
3. The power backup device of claim 2, wherein the battery management system comprises a master circuit, a power conversion circuit, and a sleep circuit, the power conversion circuit and the sleep circuit being controlled by the master circuit, the master circuit being electrically connected to the host.
4. An electronic device comprising a standby power device according to any one of claims 1 to 3.
5. The control method of the standby power device comprises a battery pack and an upper computer, wherein the battery pack comprises a plurality of battery units which are connected in parallel, and the upper computer is electrically connected with the battery pack;
the control method comprises the following steps:
selecting at least one battery cell from a plurality of battery cells as a master battery and the remaining battery cells as slave batteries when the standby power device is only discharged;
controlling the discharge of the main battery;
and controlling the slave battery to sleep.
6. The control method according to claim 5, characterized in that said selecting at least one of the plurality of the battery cells as a master battery and the remaining battery cells as slave batteries includes:
obtaining the residual electric quantity information of each battery unit;
and selecting at least one battery unit from a plurality of battery units as a main battery and the rest battery units as auxiliary batteries according to the residual electric quantity information from high to low.
7. The control method according to claim 5, characterized in that said selecting at least one of the plurality of the battery cells as a master battery and the remaining battery cells as slave batteries includes:
numbering the battery units;
obtaining the residual electric quantity information of each battery unit;
and selecting at least one battery unit from the plurality of battery units as a main battery and the rest battery units as auxiliary batteries according to the order of the numbers under the condition that the residual electric quantity information of the battery units is the same.
8. The control method according to claim 5, characterized by further comprising, after said controlling the discharge of the main battery:
switching the master battery to the slave battery in case it is determined that at least one of the master batteries cannot be discharged;
and re-selecting at least one battery unit from the rest secondary batteries as a new main battery.
9. The control method according to claim 8, wherein the case where the main battery is unable to discharge includes:
and the cell parameters of the main battery do not meet preset conditions.
10. The control method according to claim 5, characterized by further comprising:
controlling the slave battery to exit from sleep when the standby power device is in both charge and discharge states;
and controlling all the battery cells to discharge.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210960366.8A CN117639200A (en) | 2022-08-11 | 2022-08-11 | Standby power device, control method thereof and storage medium |
| PCT/CN2023/109142 WO2024032368A1 (en) | 2022-08-11 | 2023-07-25 | Power backup device and control method therefor, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210960366.8A CN117639200A (en) | 2022-08-11 | 2022-08-11 | Standby power device, control method thereof and storage medium |
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| CN117639200A true CN117639200A (en) | 2024-03-01 |
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| CN202210960366.8A Pending CN117639200A (en) | 2022-08-11 | 2022-08-11 | Standby power device, control method thereof and storage medium |
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| WO (1) | WO2024032368A1 (en) |
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|---|---|---|---|---|
| CN103166294B (en) * | 2011-12-15 | 2015-10-21 | 东莞钜威新能源有限公司 | Distributed backup battery management system and corresponding electronic system |
| US20150001943A1 (en) * | 2013-06-28 | 2015-01-01 | General Electric Company | System with dual battery back-up and related methods of operation |
| CN106941269A (en) * | 2016-01-04 | 2017-07-11 | 中兴通讯股份有限公司 | Battery set charge/discharge method and device |
| CN107785940B (en) * | 2016-08-25 | 2021-06-29 | 太普动力新能源(常熟)股份有限公司 | Power supply control method of multi-battery module parallel framework |
| CN110445162A (en) * | 2019-09-02 | 2019-11-12 | 江苏致能杰能源科技有限公司 | Energy storage device |
| CN113612281A (en) * | 2021-08-05 | 2021-11-05 | 辽宁瑞华实业集团高新科技有限公司 | Power supply system and power supply method |
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- 2022-08-11 CN CN202210960366.8A patent/CN117639200A/en active Pending
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