WO2024000107A1 - Procédé de charge de batterie et appareil de charge - Google Patents

Procédé de charge de batterie et appareil de charge Download PDF

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Publication number
WO2024000107A1
WO2024000107A1 PCT/CN2022/101567 CN2022101567W WO2024000107A1 WO 2024000107 A1 WO2024000107 A1 WO 2024000107A1 CN 2022101567 W CN2022101567 W CN 2022101567W WO 2024000107 A1 WO2024000107 A1 WO 2024000107A1
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WO
WIPO (PCT)
Prior art keywords
battery
batteries
power
swap station
threshold
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Application number
PCT/CN2022/101567
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English (en)
Chinese (zh)
Inventor
陈伟峰
何乐为
王霞
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to PCT/CN2022/101567 priority Critical patent/WO2024000107A1/fr
Priority to CN202280057957.2A priority patent/CN117941204A/zh
Publication of WO2024000107A1 publication Critical patent/WO2024000107A1/fr

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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

Definitions

  • the embodiments of the present application relate to the field of battery technology, and in particular, to a battery charging method and charging device.
  • the charging device can be used to charge the electrical device, that is, the battery in the electrical device is charged to realize the cycle of charging and discharging the battery. .
  • the battery in the electrical device is charged to realize the cycle of charging and discharging the battery.
  • it takes a long time to charge the battery.
  • the electrical device cannot operate, which brings great inconvenience to the user.
  • the electric device can replace the battery with insufficient power with a battery with sufficient power in the power swap station.
  • the battery with insufficient power can be charged in the power swap station.
  • the charged battery can be used as an electric device for subsequent battery replacement at the power swap station. Replacement battery.
  • embodiments of the present application provide a battery charging method and a charging device, which are beneficial to reducing the charging cost of the power swap station, thereby reducing the operating cost of the power swap station.
  • a battery charging method is provided, which is applied in a power swap station.
  • the charging method includes: when the electricity price is in a peak period, charging the battery in the power swap station according to a first threshold, or charging the battery in the power swap station.
  • the electricity price is in a trough period
  • the battery in the power swap station is charged according to the second threshold; wherein the first threshold is smaller than the second threshold.
  • the battery in the power swap station when the electricity price is in the peak period, the battery in the power swap station can be charged according to a smaller threshold, which is beneficial to allowing the power swap station to quickly reach the usable state of the power swap station at the minimum cost.
  • the battery in the power swap station can be charged according to a larger threshold, which is conducive to the power swap station reaching the maximum profit state of the power swap station at the lowest cost. That is, the charging method 20 provided in the embodiment of the present application is conducive to saving money. Operating costs of battery swap stations.
  • charging the battery in the power swap station according to the first threshold when the electricity price is in the peak period includes: charging the battery in the power swap station when the electricity price is in the peak period. A battery whose state of charge SOC is less than the first threshold is charged to the first threshold.
  • the electricity price when the electricity price is at peak period, batteries with SOC less than the first threshold in the power swap station are charged to the first threshold. Since the first threshold is a smaller threshold, it is beneficial for the power swap station to quickly reach the target with minimum cost. The availability status of the battery swap station.
  • charging the battery whose state of charge SOC is less than the first threshold in the battery swap station to the first threshold includes: when the electricity price is in the peak period, In this case, based on the current total number of batteries A in the power swap station and the minimum number of operating batteries B required by the power swap station, the battery to be charged is determined in the power swap station, and the SOC of the battery to be charged is less than the first threshold; The battery to be charged is charged to the first threshold.
  • the battery swap station when the electricity price is in the peak period, the total number of batteries A in the current power swap station and the minimum number of operating batteries B required by the power swap station are combined to determine the batteries to be charged in the power swap station, which is beneficial to The battery swap station can achieve the required minimum number of batteries for operation at the lowest cost possible, ensuring a dynamic balance between operational requirements and operating costs.
  • the battery to be charged is determined in the power swap station based on the current total number of batteries A in the power swap station and the minimum number of operating batteries B required by the power swap station, including: when A equals B In this case, it is determined that all batteries with SOC less than the first threshold in the battery swap station are the batteries to be charged.
  • the battery to be charged is determined in the power swap station based on the current total number of batteries A in the power swap station and the minimum number of operating batteries B required by the power swap station, including: when A is greater than In the case of B, the battery to be charged is determined in the power swap station based on the number C of batteries with SOC greater than or equal to the first threshold in the power swap station and the minimum number of operating batteries B required by the power swap station.
  • the total number of batteries A in the current power swap station is greater than the minimum number of operating batteries B required by the power swap station, further based on the number C of batteries in the power swap station with SOC greater than or equal to the first threshold and the number of batteries in the power swap station.
  • the relationship between the minimum number of operating batteries B required by the power station and determining the batteries to be charged in the power swap station will help the power swap station reach the usable status of the power swap station as quickly as possible.
  • Determining the battery to be charged in the power swap station includes: when A is greater than B and C is less than B, based on the difference between the SOC of multiple batteries whose SOC is less than the first threshold in the power swap station and the first threshold.
  • the absolute value of the value determines the battery to be charged in the battery swap station, and the plurality of batteries are batteries whose SOC is less than the first threshold.
  • the battery to be charged may further be determined based on the absolute value of the difference between the SOC of multiple batteries whose SOC is less than the first threshold in the battery swap station and the first threshold. , which is more conducive to making the power swap station reach the usable status of the power swap station as quickly as possible.
  • determining the battery to be charged in the battery swap station includes: when A is greater than B and C is less than B, determine the (B-C) battery with the smallest absolute value as the battery to be charged.
  • the (B-C) battery with the smallest absolute value is determined as the battery to be charged, so that the battery swap station can reach the usable state of the battery swap station as quickly as possible.
  • charging the battery in the power swap station according to the second threshold when the electricity price is in a trough period includes: charging the battery in the power swap station when the electricity price is in a trough period. All batteries whose state of charge SOC is less than the second threshold are charged to the second threshold.
  • the price of electricity is in a trough period, which means that the price of electricity is cheaper and the cost of charging is lower. At this time, there is no need to make too many judgments, and all batteries with SOC less than the second threshold in the power swap station are directly charged to the second threshold. This can make all batteries in the power swap station reach the replacement level while minimizing the operating cost of the power swap station. Optimal conditions for electricity, thereby providing users with better services.
  • the first threshold is the minimum SOC that allows battery replacement
  • the second threshold is the maximum SOC that the battery can charge.
  • the first threshold to the minimum SOC that allows battery swapping and the second threshold to the maximum SOC that the battery can charge, a dynamic balance between operational requirements and protective battery conditions can be ensured.
  • the charging method further includes: when the maximum input power of the power swap station is less than the sum of the maximum input powers of all batteries to be charged in the power swap station, charging according to the maximum input power of the power swap station. Determine the charging power of each battery to be charged in all the batteries to be charged.
  • each battery to be charged in all the batteries to be charged is determined based on the maximum input power of the power swap station.
  • the charging power enables the charging work of the battery swap station to operate safely and normally.
  • all batteries to be charged are determined based on the maximum input power of the battery swap station.
  • the charging power of each battery to be charged in the battery includes: when the maximum input power of the battery swap station is less than the sum of the maximum input powers of all batteries to be charged in the battery swap station, the maximum input power of the battery swap station and the The ratio of the number of all batteries to be charged is determined as the charging power of each battery to be charged.
  • a battery charging device which is used in a power swap station.
  • the charging device includes: a control unit configured to charge the battery in the power swap station according to a first threshold when the electricity price is in a peak period. Charging is performed, or when the electricity price is in a valley period, the battery in the power swap station is charged according to the second threshold; wherein the first threshold is smaller than the second threshold.
  • control unit is specifically configured to charge the battery whose state of charge SOC is less than the first threshold in the battery swap station to the first threshold when the electricity price is in a peak period.
  • control unit includes: a determination subunit, configured to determine the number of batteries A required for the minimum operation of the power swap station based on the current total number of batteries A in the power swap station when the electricity price is in a peak period. Number B, a battery to be charged is determined in the power swap station, and the SOC of the battery to be charged is less than the first threshold; a charging subunit is used to charge the battery to be charged to the first threshold.
  • the determination subunit is specifically configured to: when A is equal to B, determine that all batteries in the battery swap station whose SOC is less than the first threshold are the batteries to be charged.
  • the determination subunit is specifically used to: when A is greater than B, based on the number C of batteries with SOC greater than the first threshold in the power swap station and the minimum operation required of the power swap station.
  • the number of batteries B is, and the battery to be charged is determined in the battery swap station.
  • the determination subunit is specifically configured to: when A is greater than B and C is less than B, based on the SOC of multiple batteries whose SOC is less than the first threshold in the power swap station and the first threshold The absolute value of the difference between them determines the battery to be charged in the battery swap station, and the plurality of batteries are batteries whose SOC is less than the first threshold.
  • the determination subunit is configured to: when the difference between A is greater than B and C is less than B is greater than or equal to 1, determine the (B-C) batteries with the smallest absolute value as Battery to be charged.
  • control unit is specifically configured to: when electricity prices are in a valley period, charge all batteries in the battery swap station whose state of charge SOC is less than the second threshold to the second threshold.
  • the first threshold is the minimum SOC that allows battery replacement
  • the second threshold is the maximum SOC that the battery can charge.
  • the charging device further includes: when the maximum input power of the power swap station is less than the sum of the maximum input powers of all batteries to be charged in the power swap station, according to the maximum input power of the power swap station Determine the charging power of each battery to be charged in all the batteries to be charged.
  • the power exchange station when the maximum input power of the power swap station is less than the sum of the maximum input powers of the batteries to be charged in the power swap station, the power exchange station is within the maximum input power of the power swap station.
  • Charging the battery to be charged includes: when the maximum input power of the battery swap station is less than the sum of the maximum input power of all batteries to be charged in the battery swap station, charging the maximum input power of the battery swap station and all batteries to be charged The ratio of the number is determined as the charging power of each battery to be charged.
  • a battery charging device in a third aspect, includes a memory and a processor.
  • the memory is used to store instructions.
  • the processor is used to read the instructions and execute the instructions according to the first aspect and the first aspect thereof. method in any possible implementation.
  • a chip including a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the first aspect and any of the possible implementations of the first aspect. Methods.
  • a fifth aspect provides a computer program, characterized in that the computer program causes the computer to execute the method in the first aspect and any possible implementation manner of the first aspect.
  • a computer-readable storage medium which is characterized in that it is used to store a computer program, and the computer program causes the computer to execute the method in the first aspect and any possible implementation manner of the first aspect.
  • a seventh aspect provides a computer program product, which is characterized by including computer program instructions that enable a computer to execute the method of the first aspect and any possible implementation of the first aspect.
  • Figure 1 shows a schematic diagram of a power swap station to which the embodiment of the present application is applicable.
  • FIG. 2 is a schematic block diagram of a battery charging method according to an embodiment of the present application.
  • FIG. 3 is another schematic block diagram of a battery charging method according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a battery charging device according to an embodiment of the present application.
  • FIG. 5 is another schematic block diagram of a battery charging device according to an embodiment of the present application.
  • FIG. 6 is another schematic block diagram of the battery charging device according to the embodiment of the present application.
  • the battery can be used as a power source to provide power for the vehicle.
  • charging equipment such as charging piles can be used to charge the vehicle, that is, the battery in the vehicle is charged. Achieve battery charging and discharging cycles.
  • battery charging takes a long time, which limits the vehicle's endurance.
  • Battery swapping technology adopts the method of "vehicle battery separation", which can provide battery replacement services for vehicles through battery swapping stations, that is, the battery can be quickly removed or installed from the vehicle.
  • the battery removed from the vehicle can be placed in the battery swap cabinet of the battery swap station for charging in preparation for battery swapping for subsequent vehicles entering the battery swap station.
  • the charging strategy for batteries entering a battery swap station is to charge the battery once it enters the battery swap station until the battery is fully charged.
  • the operating costs of battery swap stations are relatively high.
  • embodiments of the present application provide a battery charging method that utilizes different periods of peaks and troughs of electricity prices and uses different thresholds to charge batteries in a power swap station, which is beneficial to saving operating costs of the power swap station.
  • FIG. 1 shows a schematic diagram of an application scenario of the battery charging method according to the embodiment of the present application.
  • the application scenario of the battery charging method may involve a battery swap station 11 , a power consumption device 12 and a battery.
  • the power swap station 11 may refer to a place that provides power swap services for electrical devices.
  • the power swap station 11 may be a fixed place, or the power swap station 11 may be a movable place such as a mobile power swap device, which is not limited here.
  • the electrical device 12 can be detachably connected to the battery.
  • the electrical device 12 may be a car, a truck, or other vehicle that uses a power battery as a power source.
  • the electric device 12 may be as small as a robot, as large as a ship or an airplane, or other devices that use batteries to provide power or power.
  • the embodiment of the present application does not limit the type of the electrical device 12 .
  • the battery may include a battery disposed in the power consumption device 12 and a battery located in the power swap station 11 for power swapping.
  • the battery to be replaced in the electrical device 12 is referred to as battery 141
  • the battery used for power replacement in the power swap station is referred to as battery 142 .
  • the battery may be a lithium-ion battery, a lithium metal battery, a lead-acid battery, a nickel separator battery, a nickel-metal hydride battery, a lithium-sulfur battery, a lithium-air battery, a sodium-ion battery, etc., and is not limited here.
  • the battery can be a battery cell, a battery module or a battery pack, which is not limited here.
  • the battery can also provide power to other electrical devices in the electrical device 12 .
  • the battery can also power an in-car air conditioner, a car player, etc.
  • the power-swapping station 11 removes the battery 141 from the power-consuming device 12 through the power-swapping device, takes out the battery 142 from the power-swapping station 11 , and then installs the battery 142 to the electrical device 12. Afterwards, the electrical device 12 with the battery 142 installed can drive away from the power swap station 11 .
  • power-consuming devices can be quickly replenished with energy within a few minutes or even tens of seconds, improving the user experience.
  • a power swap cabinet 13 may be provided in the power swap station 11 .
  • the power swap cabinet 13 may be provided with a charging unit 132 and a plurality of charging compartments 133 , and batteries used for power swap may be placed in the charging compartments 133 of the power swap cabinet 13 of the power swap station 11 .
  • the charging unit 132 can charge the battery in the charging compartment 133 .
  • the charging unit may include an AC/DC module, that is, an AC/DC module and other components, devices or equipment with a charging function, which is not limited here.
  • the charging unit 132 can be provided in one-to-one correspondence with the charging compartments 133, or multiple charging compartments 133 can share one charging unit 132, which is not limited here.
  • the electric device 12 can be installed with at least one battery 141.
  • one battery 141 or multiple batteries 141 in the electric device 12 can be replaced with the battery swap station 11 according to the user's selection.
  • Battery 142 inside.
  • the power swap station 11 may also be provided with a corresponding management device.
  • the management device may have a centralized structure or a distributed structure, which is not limited here.
  • the management device can be installed inside the power swap station 11 or outside the power swap station 11 .
  • the management device may also be partially installed inside the power swap station 11 and partially outside the power swap station 11 .
  • the power-consuming device 12 can communicate and interact with the management device in the power-swapping station 11 , so that the power-consuming device 12 completes power swapping in the power-swapping station 11 .
  • the management device in the power swap station 11 can also communicate and interact with the power swap cabinet to control the charging of the batteries in the power swap cabinet.
  • the communication interaction between various modules may include wired communication or wireless communication.
  • the wired communication includes, for example, a CAN communication bus.
  • Wireless communication methods include various methods such as Bluetooth communication, WiFi communication, ZigBee communication, etc., and are not limited here.
  • FIG. 2 shows a schematic block diagram of a battery charging method 20 according to an embodiment of the present application.
  • the power swap station in the charging method 200 may be the power swap station 11 in FIG. 1
  • the battery in the charging method 200 may be the battery 142 placed in the charging compartment 133 in FIG. 1 .
  • the charging method 20 may be executed by the management device in the power swap station 11 , or may be executed by the power swap cabinet 13 in the power swap station 11 . To facilitate understanding, the following will take the management device arranged in the power swap station 11 as the execution subject. Describe the technical solution of this application. As shown in FIG. 2 , the charging method 20 may include some or all of the following contents.
  • the management device charges the battery in the power swap station according to the first threshold, or when the electricity price is at the trough period, the management device charges the battery in the power swap station according to the second threshold, where , the first threshold is smaller than the second threshold.
  • the State Grid adopts a charging strategy of peak and valley time-of-use electricity prices. That is, when the electricity price is at the peak period, the electricity price charges are higher; while the electricity price is at the trough period, the electricity price charges are lower.
  • the first threshold and the second threshold may be critical values of the same parameter of the battery.
  • the first threshold and the second threshold are critical values of SOC.
  • the management device when the electricity price is in the peak period, can charge the battery in the power swap station according to a smaller threshold, which is beneficial to allowing the power swap station to quickly reach the usable status of the power swap station at the minimum cost, and When the electricity price is in the trough period, the management device can charge the battery in the power swap station according to a larger threshold, which is beneficial to the power swap station to achieve the maximum profit state of the power swap station at the lowest cost, that is, the charging method provided by the embodiment of the present application 20. It is helpful to save the operating cost of the battery replacement station.
  • FIG. 3 shows another schematic block diagram of the battery charging method according to the embodiment of the present application.
  • step S21 that is, when the electricity price is in the peak period
  • the management device charges the battery in the power swap station according to the first threshold, including: S211, when the electricity price is in the peak period.
  • the management device charges the battery whose state of charge SOC is less than the first threshold in the battery swap station to the first threshold.
  • the management device can first determine the battery to be charged based on the relationship between the SOC of the battery in the battery swap station and the first threshold, and charge the battery to be charged to the first threshold.
  • the management device charges the batteries with SOC less than the first threshold in the power swap station to the first threshold. Since the first threshold is a smaller threshold, it is beneficial for the power swap station to charge the battery at the minimum cost. Quickly reach the usable status of the battery swap station.
  • step S211 that is, when the electricity price is in the peak period, the management device charges the battery whose state of charge SOC is less than the first threshold in the power swap station to the first threshold, including : S212, when the electricity price is in the peak period, the management device determines the battery to be charged in the power swap station based on the current total number of batteries A in the power swap station and the minimum number of operating batteries B required by the power swap station.
  • the SOC of the rechargeable battery is less than the first threshold; S213, the management device charges the battery to be charged to the first threshold.
  • the management device can first determine the total number of batteries in the battery swap station, recorded as A.
  • the minimum number of operating batteries required by the battery swap station can be recorded as B, which means that the battery swap station can support operation only when the current number of batteries in the battery swap station is greater than or equal to B.
  • the minimum number of operating batteries B required by the power swap station may be preset according to the operation conditions of the power swap station. For example, assuming that the power swap station can accommodate a total of 60 batteries, but in fact, as long as there are 10 batteries in the power swap station, it can support operation, then the minimum number of batteries required for operation of the power swap station B is 10.
  • the management device can select all batteries with SOC less than the first threshold from the battery swap station, and further, combine the total number of batteries A in the current battery swap station with the minimum required by the battery swap station.
  • the number of batteries in operation is B, the batteries to be charged in the battery swap station are determined, and the batteries to be charged are charged to the first threshold.
  • the management device when the electricity price is in the peak period, the management device combines the total number of batteries A in the current power swap station and the minimum number of operating batteries B required by the power swap station to determine the batteries to be charged in the power swap station, thereby It is conducive to enabling the battery swap station to achieve the required minimum number of batteries for operation at a lower cost as much as possible, ensuring a dynamic balance between operational requirements and operating costs.
  • step S212 the management device determines the battery to be charged in the power swap station based on the current total number of batteries A in the power swap station and the minimum number of operating batteries B required by the power swap station. , including: S214, when A is equal to B, the management device determines that all batteries with SOC less than the first threshold in the battery swap station are the batteries to be charged.
  • the battery swapping station in order for the battery swapping station to meet the operational requirements, in addition to the total number of batteries A in the current battery swapping station required to meet the minimum number of batteries required for operation B, it also includes B batteries required to meet the battery swapping capacity (i.e. reaching the first threshold). ), that is to say, the battery swap station meeting the operational requirements means that the power of at least B batteries in the battery swap station is greater than or equal to the first threshold.
  • the power swap station can at least support operations in terms of the number of batteries. Furthermore, it is also necessary to ensure that the SOC of all batteries in the power swap station should reach above the first threshold, so that the power swap station can be opened to the outside world to meet the vehicle's power swap needs. At this time, all batteries with SOC less than the first threshold in the battery swap station should be charged to the first threshold.
  • the management device when the electricity price is in the peak period, if the total number of batteries A in the current power swap station is equal to the minimum number of operating batteries B required by the power swap station, the management device will set all SOCs in the power swap station to be less than the first The threshold battery is charged to the first threshold, so that the battery swap station can reach the required minimum number of batteries for operation at a lower cost as much as possible, ensuring a dynamic balance between operational requirements and operating costs.
  • the management device determines the number of batteries to be charged in the power swap station based on the current total number of batteries A in the power swap station and the minimum number of operating batteries B required by the power swap station.
  • the battery includes: S215.
  • the management device determines the number of batteries in the power swap station based on the number C of batteries whose SOC is greater than or equal to the first threshold and the minimum number of batteries required for operation of the power swap station.
  • the battery to be charged is determined in the battery swap station.
  • Electricity prices are at peak hours, which means that electricity prices are more expensive and charging costs are higher.
  • the total number of batteries A in the current power swap station is greater than the minimum number of batteries B required for operation of the power swap station, then it is sufficient to ensure that the power of B batteries in the power swap station reaches the first threshold. That is to say, it is necessary to further determine the number C of batteries with SOC greater than or equal to the first threshold in the battery swap station. If the number C of batteries with SOC greater than or equal to the first threshold in the battery swap station is already greater than or equal to the minimum operation required by the battery swap station, The number of batteries B, then there is no need to charge the batteries in the battery swap station at this time.
  • the number C of batteries with SOC greater than or equal to the first threshold in the battery swap station is less than the minimum number of batteries B required for operation of the battery swap station. Charge the battery in the battery swap station. And if the number C of batteries with SOC greater than or equal to the first threshold in the power swap station is less than the minimum number of operating batteries B required by the power swap station, then at least (B-C) batteries with SOC less than the first threshold in the power swap station must be selected. The battery is charged until the first threshold.
  • the management device when the total number of batteries A in the current power swap station is greater than the minimum number of operating batteries B required by the power swap station, the management device is further based on the number C of batteries in the power swap station with SOC greater than or equal to the first threshold. It is related to the minimum number of operating batteries B required by the battery swap station. Determining the batteries to be charged in the battery swap station is conducive to making the battery swap station reach the usable state of the battery swap station as quickly as possible.
  • step S215 that is, in the case where A is greater than B, the management device determines the number C of batteries in the power swap station with SOC greater than or equal to the first threshold and the number of batteries required by the power swap station.
  • the minimum number of operating batteries B, determining the battery to be charged in the power swap station includes: S216, when A is greater than B and C is less than B, the management device determines the battery to be charged according to the multiple batteries in the power swap station whose SOC is less than the first threshold.
  • the absolute value of the difference between the SOC of each battery in the battery and the first threshold is determined in the battery swap station, and the battery to be charged is determined to be a battery with an SOC smaller than the first threshold.
  • the (B-C) batteries can be determined based on the priorities of all batteries in the battery swap station whose SOC is less than the first threshold.
  • the battery to be charged may be determined based on the SOC ordering from high to low of all batteries with SOC less than the first threshold in the battery swap station.
  • the battery to be charged may also be determined based on the absolute value of the difference between the SOC and the first threshold of all batteries in the battery swap station whose SOC is less than the first threshold.
  • the management device may further determine, based on the absolute value of the difference between the SOC of multiple batteries whose SOC is less than the first threshold in the battery swap station and the first threshold, the Rechargeable batteries are more conducive to making the battery swap station reach the usable state of the battery swap station as quickly as possible.
  • step S216 that is, when A is greater than B and C is less than B, the management device determines the SOC of multiple batteries whose SOC is less than the first threshold in the power swap station and the first threshold.
  • the absolute value of the difference between them, and determining the battery to be charged in the battery swap station includes: S217.
  • the management device determines the (B-C) batteries with the smallest absolute value. This is the battery to be recharged.
  • the (B-C) battery with the smallest absolute value is determined as the battery to be charged, so that the battery swap station can reach the usable state of the battery swap station as quickly as possible.
  • the battery to be charged can be determined from the battery swap station without obtaining the absolute value of the difference between the SOC and the first threshold of multiple batteries in the battery swap station whose SOC is smaller than the first threshold.
  • the (B-C) batteries with the highest SOC among multiple batteries with SOC less than the first threshold in the battery swap station can be directly determined as the batteries to be charged.
  • the SOCs of multiple batteries whose SOCs are less than the first threshold in the battery swapping station can be sorted from high to low, and the first (B-C) batteries are determined as the batteries to be charged.
  • the power swap station when the electricity price is in peak period, if the total number of batteries A in the current power swap station is less than the minimum number of batteries B required for operation of the power swap station, then the power swap station does not meet the operational requirements, Even if the SOC of all batteries in the battery swap station is greater than or equal to the first threshold, the battery swap station is not enough to support opening to the outside world. At this time, the battery in the battery swap station may not be charged temporarily.
  • step S21 that is, when the electricity price is in a trough period
  • the management device charges the battery in the power swap station according to the second threshold, including: S218, when the electricity price is in a trough period.
  • the management device charges all batteries in the battery swapping station whose state of charge SOC is less than the second threshold to the second threshold.
  • the price of electricity is in a trough period, which means that the price of electricity is cheaper and the cost of charging is lower. At this time, there is no need to make too many judgments, and all batteries with SOC less than the second threshold in the power swap station are directly charged to the second threshold. This can make all batteries in the power swap station reach the replacement level while minimizing the operating cost of the power swap station. Optimal conditions for electricity, thereby providing users with better services.
  • the first threshold is the minimum SOC that allows battery replacement
  • the second threshold is the maximum SOC that the battery can charge.
  • the first threshold may be 80% and the second threshold may be 95%. It should be understood that the first threshold and the second threshold can also be other values, and the first threshold and the second threshold can be preset based on experience.
  • the first threshold to the minimum SOC that allows battery swapping and the second threshold to the maximum SOC that the battery can charge, a dynamic balance between operational requirements and protective battery conditions can be ensured.
  • the charging method 20 also includes: S22, in the case where the maximum input power of the power swap station is less than the sum of the maximum input powers of all batteries to be charged in the power swap station, the management device determines The maximum input power of the battery swap station determines the charging power of each battery to be charged among all batteries to be charged.
  • the charging power of each battery to be charged can be determined based on the number of batteries to be charged in the battery swap station. For example, if the number of batteries to be charged in the battery swap station is 1, the maximum input power of the battery swap station can be directly determined as the charging power of the battery to be charged. For another example, if the number of batteries to be charged in the battery swapping station is greater than 1, charging power can be allocated to all batteries to be charged according to the maximum input power of the battery swapping station, that is, the sum of the allocated charging powers of all batteries to be charged is equal to the power of the battery swapping station. Maximum input power.
  • the management device determines each of the batteries to be charged based on the maximum input power of the power swap station.
  • the charging power of the rechargeable battery enables the charging work of the battery swap station to operate safely and normally.
  • step S22 that is, when the maximum input power of the power swap station is less than the sum of the maximum input powers of all batteries to be charged in the power swap station, the management device The maximum input power determines the charging power of each battery to be charged in all the batteries to be charged, including: S221.
  • the management device determines the charging power of each battery to be charged as a ratio of the maximum input power of the power swap station to the number of all batteries to be charged.
  • the charging power may not be evenly distributed to all batteries to be charged in the battery swap station. , for example, randomly allocating charging power.
  • the charging power is allocated according to the SOC of all batteries to be charged. For example, a smaller SOC is allocated a larger charging power, and a larger SOC is allocated a smaller charging power. As long as the sum of the allocated charging powers of all batteries to be charged is equal to the maximum input power of the battery swap station, the embodiment of the present application does not limit this.
  • each battery to be charged can be charged according to its maximum input power.
  • each parameter used in this charging method is defined as follows.
  • the total number of batteries that the power swap station can accommodate is N sum .
  • the minimum number of batteries required for operation of the power swap station is N min .
  • the total number of batteries in the current power swap station is N current .
  • the maximum input power of the power swap station is P maxstation .
  • Each battery The maximum input power is P maxbettery , and the number of batteries to be charged is N charge .
  • the SOC of the nth battery is soc(n), the minimum SOC that allows battery swapping is SOC min , and the maximum SOC that the battery can charge, that is, the ideal working condition SOC is SOC ideal , which is greater than or equal to the minimum SOC that allows battery swapping.
  • the number is count(soc(n) ⁇ SOC min ), and the number of batteries less than the ideal operating condition SOC is count(soc(n) ⁇ SOC ideal ).
  • N current N min , and count(soc(n) ⁇ SOC min ) ⁇ N min . Then all batteries with soc(n) ⁇ SOC min start charging until count(soc(n) ⁇ SOC min ) reaches N min .
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the charging method of the battery according to the embodiment of the present application is described in detail above.
  • the charging method of the battery according to the embodiment of the present application will be described in detail below with reference to FIG. 4 and FIG. 6 .
  • the technical features described in the method embodiments are applicable to the following device embodiments.
  • FIG. 4 shows a schematic block diagram of a battery charging device 300 according to an embodiment of the present application. As shown in FIG. 4 , the charging device 300 includes some or all of the following contents.
  • the control unit 310 is configured to charge the battery in the power swap station according to the first threshold when the electricity price is in the peak period, or to charge the battery in the power swap station according to the second threshold when the electricity price is in the trough period.
  • the battery is charged; wherein the first threshold is smaller than the second threshold.
  • control unit 310 is specifically configured to: when the electricity price is in a peak period, charge the battery whose state of charge SOC is less than the first threshold in the power swap station to the first threshold. .
  • control unit 310 includes: a determination sub-unit 311, configured to determine, when the electricity price is in a peak period, the current total number of batteries A in the power swap station and the minimum required by the power swap station.
  • the number of operating batteries B is determined to be a battery to be charged in the power swap station, and the SOC of the battery to be charged is less than the first threshold; the charging subunit 312 is used to charge the battery to be charged to the first threshold.
  • the determination subunit 311 is specifically configured to: when A equals B, determine that all batteries in the power swap station with SOC less than the first threshold are the batteries to be charged.
  • the determination subunit 311 is specifically configured to: when A is greater than B, determine the number of batteries C with SOC greater than the first threshold in the power swap station and the requirements of the power swap station.
  • the minimum number of batteries in operation is B, and the battery to be charged is determined in the battery swap station.
  • the determination subunit 311 is specifically configured to: when A is greater than B and C is less than B, based on the SOC of multiple batteries whose SOC is less than the first threshold in the power swap station and the The absolute value of the difference between the first thresholds determines the battery to be charged in the battery swapping station, and the plurality of batteries are batteries whose SOC is less than the first threshold.
  • the determination subunit 311 is configured to: when A is greater than B and C is less than B, determine the (B-C) battery with the smallest absolute value as the battery to be charged.
  • control unit 210 is specifically configured to: when the electricity price is in a valley period, charge all batteries in the power swap station whose state of charge SOC is less than the second threshold to the second threshold. threshold.
  • the first threshold is the minimum SOC that allows battery replacement
  • the second threshold is the maximum SOC that the battery can charge.
  • the charging device further includes: when the maximum input power of the power swap station is less than the sum of the maximum input powers of all batteries to be charged in the power swap station, according to the maximum input power of the power swap station The input power determines the charging power of each of the batteries to be charged.
  • the power exchange station when the maximum input power of the power swap station is less than the sum of the maximum input powers of the batteries to be charged in the power swap station, the power exchange station is charged within the maximum input power of the power swap station.
  • Charging the batteries to be charged in the power station includes: when the maximum input power of the power swap station is less than the sum of the maximum input powers of all batteries to be charged in the power swap station, charging the maximum input power of the power swap station and all the batteries to be charged. The ratio of the number of rechargeable batteries is determined as the charging power of each battery to be charged.
  • the charging device 400 can be used to perform the processes in the respective methods of FIG. 2 and FIG. 3. For the sake of brevity, the details will not be described again.
  • FIG. 6 shows a schematic block diagram of a battery charging device 500 according to an embodiment of the present application.
  • the charging device 500 is used in a power swap station.
  • the charging device 500 includes a processor 510 and a memory 520, where the memory 520 is used to store instructions, and the processor 510 is used to read instructions and execute the foregoing method based on the instructions. Methods for applying various embodiments.
  • the memory 520 may be a separate device independent of the processor 510 , or may be integrated into the processor 510 .
  • the charging device 500 may also include a transceiver 530 , and the processor 510 may control the transceiver 530 to communicate with other devices. Specifically, you can send information or data to other devices, or receive information or data sent by other devices.
  • the embodiment of the present application also provides a chip, including a processor, for calling and running a computer program from the memory, so that the device installed with the chip can execute corresponding steps in the various methods of the embodiment of the present application.
  • a chip including a processor, for calling and running a computer program from the memory, so that the device installed with the chip can execute corresponding steps in the various methods of the embodiment of the present application. The process, for the sake of brevity, will not be repeated here.
  • the processor in the embodiment of the present application may be an integrated circuit chip and has signal processing capabilities.
  • each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available processors.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Random Access Memory
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the charging device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the charging device in the various methods of the embodiment of the present application. For the sake of simplicity, here No longer.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the charging device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the charging device in the various methods of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the charging device in the various methods of the embodiment of the present application.
  • they are not mentioned here. Again.
  • An embodiment of the present application also provides a computer program.
  • the computer program can be applied to the charging device in the embodiment of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the charging device in the various methods of the embodiment of the present application. For the sake of simplicity, , which will not be described in detail here.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Sont prévus dans les modes de réalisation de la présente demande un procédé de charge et un appareil de charge. Le procédé de charge est appliqué à une station de permutation de batterie. Le procédé de charge comprend les étapes suivantes consistant à : lorsque le prix de l'électricité est à une période pleine, charger une batterie dans une station de permutation de batterie selon une première valeur seuil, ou lorsque le prix de l'électricité est à une période creuse, charger la batterie dans la station de permutation de batterie selon une seconde valeur seuil, la première valeur seuil étant inférieure à la seconde valeur seuil. Le procédé de charge et l'appareil de charge dans les modes de réalisation de la présente demande facilitent la réduction du coût de charge de la station de permutation de batterie, réduisant ainsi le coût de fonctionnement de la station de permutation de batterie.
PCT/CN2022/101567 2022-06-27 2022-06-27 Procédé de charge de batterie et appareil de charge WO2024000107A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2022/101567 WO2024000107A1 (fr) 2022-06-27 2022-06-27 Procédé de charge de batterie et appareil de charge
CN202280057957.2A CN117941204A (zh) 2022-06-27 2022-06-27 电池的充电方法和充电装置

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110535196A (zh) * 2018-05-25 2019-12-03 蔚来汽车有限公司 在换电设施中执行的充电方法、充电设备、以及远端服务器
CN113085650A (zh) * 2021-04-15 2021-07-09 深圳市万为物联科技有限公司 充换电柜峰谷电价下有序充电控制方法
CN113541175A (zh) * 2021-07-14 2021-10-22 福建星云电子股份有限公司 一种基于削峰填谷的换电站补电方法及系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110535196A (zh) * 2018-05-25 2019-12-03 蔚来汽车有限公司 在换电设施中执行的充电方法、充电设备、以及远端服务器
CN113085650A (zh) * 2021-04-15 2021-07-09 深圳市万为物联科技有限公司 充换电柜峰谷电价下有序充电控制方法
CN113541175A (zh) * 2021-07-14 2021-10-22 福建星云电子股份有限公司 一种基于削峰填谷的换电站补电方法及系统

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