WO2024007212A1 - Procédé et appareil d'échange de batterie - Google Patents

Procédé et appareil d'échange de batterie Download PDF

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Publication number
WO2024007212A1
WO2024007212A1 PCT/CN2022/104204 CN2022104204W WO2024007212A1 WO 2024007212 A1 WO2024007212 A1 WO 2024007212A1 CN 2022104204 W CN2022104204 W CN 2022104204W WO 2024007212 A1 WO2024007212 A1 WO 2024007212A1
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WIPO (PCT)
Prior art keywords
battery
parameter
soc
power
parameters
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Application number
PCT/CN2022/104204
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English (en)
Chinese (zh)
Inventor
张萼松
马海
Original Assignee
时代电服科技有限公司
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Application filed by 时代电服科技有限公司 filed Critical 时代电服科技有限公司
Priority to CN202280057242.7A priority Critical patent/CN117940947A/zh
Priority to PCT/CN2022/104204 priority patent/WO2024007212A1/fr
Publication of WO2024007212A1 publication Critical patent/WO2024007212A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/80—Exchanging energy storage elements, e.g. removable batteries
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/14—Payment architectures specially adapted for billing systems

Definitions

  • the present application relates to the technical field of electric vehicles, and in particular to a method and device for battery replacement.
  • This application provides a method and device for battery replacement. By judging the usage of the battery and selecting different battery parameters for billing under different circumstances, accurate billing can be achieved.
  • a method for battery replacement applied to a battery management system, including: determining whether to correct a first battery parameter of a first battery, the first battery being replaced by an electrical device. Battery; in the case of correcting the first battery parameter, sending the second battery parameter, which is obtained after correcting the first battery parameter; or, without correcting the first battery parameter In the case of correction, the first battery parameter is sent; wherein the first battery parameter or the second battery parameter is used for charging the first battery.
  • the battery parameters used for billing can be reasonably selected according to different situations to ensure reasonable billing of the battery replacement process under different circumstances, thereby improving billing. accuracy.
  • determining whether to correct the first battery parameter of the first battery includes: obtaining a correction parameter, the correction parameter being used to determine the usage of the first battery; determining according to the correction parameter Whether to correct the first battery parameter.
  • the correction parameter includes a first time period and/or a first number of cycles of the first battery between the first power replacement command and the second power replacement command, and the first power replacement command is To instruct the electrical equipment to replace the first battery, the second battery replacement command is the battery replacement command when the first battery was calibrated last time.
  • the time period and/or the number of cycles between the first battery replacement command and the second battery replacement command can reflect the usage of the first battery.
  • the usage degree determines whether to correct the first battery parameter of the first battery, which is beneficial to improving the accuracy of billing.
  • determining whether to correct the first battery parameter according to the correction parameter includes: the first time period is greater than or equal to a first threshold, or the first number of cycles is greater than or When equal to the second threshold, it is determined to correct the first battery parameter; when the first time period is less than the first threshold, and the first cycle number is less than the second threshold , it is determined not to correct the first battery parameter.
  • the correction parameter By setting a threshold value for the correction parameter to determine whether to correct the first battery parameter, different usage conditions of the first battery can be more accurately distinguished, and when the first battery parameter needs to be corrected, the third battery parameter used for billing is guaranteed to be corrected.
  • the accuracy of the first battery parameter is improved, thereby improving the accuracy of billing; without the need to correct the first battery parameter, the billing result can be pushed to the user in a timely manner, thereby improving the user experience.
  • obtaining the correction parameters includes: obtaining a first correction parameter, which is a correction parameter of the first battery that is recorded when receiving the first battery replacement instruction; obtaining A second correction parameter, the second correction parameter is a correction parameter of the first battery that is recorded when receiving the second battery replacement command; the second correction parameter is determined based on the first correction parameter and the second correction parameter. the correction parameters.
  • the method when the first battery parameter is corrected, the method further includes: correcting the first battery parameter to obtain the second battery parameter.
  • the BMS can obtain the corrected battery parameters and send them to the battery replacement equipment, so that the power replacement equipment can perform billing with accurate battery parameters, which is beneficial to improving the accuracy of billing. sex.
  • the first battery parameter includes a state of charge SOC of the first battery
  • correcting the first battery parameter includes: determining a SOC of the first battery after a first period of time. SOC, the first battery is in a resting state during the first period.
  • the SOC can be corrected, so that the battery replacement device can perform billing with more accurate battery parameters, which is beneficial to improving billing accuracy.
  • the first battery parameter includes a health state SOH of the first battery
  • correcting the first battery parameter includes: controlling the first battery to be discharged from a first SOC to a first SOC. Two SOC; control the first battery to be charged from the second SOC to the first SOC after the second period, and the first battery is in a resting state during the second period; according to the first The SOC and the second SOC determine the SOH of the first battery.
  • the battery replacement device can correct the error caused by the change in SOH when charging according to the SOH of the first battery, making the billing more accurate.
  • the method further includes: receiving a first power replacement instruction, where the first power replacement instruction is used to instruct the electrical device to replace the first battery.
  • the first battery swap command triggers the BMS to determine the corrected battery parameters, which can instruct the BMS to correct the battery parameters when needed. At the same time, this can ensure that the relevant battery parameters received by the battery swap equipment are accurate, thus helping to improve the battery Accuracy of billing.
  • a method for battery replacement which is characterized in that, applied to power replacement equipment, the method includes: receiving the second battery parameter when correcting the first battery parameter of the first battery, The second battery parameter is obtained after correction of the first battery parameter, and the first battery is a battery replaced by an electrical device; or, without correcting the first battery parameter, the first battery parameter is received.
  • the first battery parameter ; perform billing based on the first battery parameter or the second battery parameter.
  • the accuracy of the battery parameters can be ensured when the first battery is in different situations, and reasonable billing can be achieved, thereby improving the accuracy of billing.
  • the method further includes: sending a first power replacement instruction, where the first power replacement instruction is used to instruct the electrical equipment to replace the first battery.
  • the first battery swap command triggers the BMS to determine the corrected battery parameters, which can instruct the BMS to correct the battery parameters when needed. At the same time, this can ensure that the relevant battery parameters received by the battery swap equipment are accurate, thus helping to improve the battery Accuracy of billing.
  • the method further includes: obtaining a third battery parameter of a second battery, the second battery being a battery replaced by the electrical device; Charging based on battery parameters includes: charging based on the first battery parameter and the third battery parameter; or charging based on the second battery parameter and the third battery parameter.
  • Performing billing based on the relevant battery parameters of the first battery and the second battery can make the billing method more reasonable and improve the accuracy of billing.
  • charging according to the first battery parameter or the second battery parameter includes: charging according to the following formula:
  • F is the battery replacement fee
  • SOC 1 and SOH 1 are the first battery parameters or the second battery parameters of the first battery
  • E 1 is the total power of the first battery
  • SOC 2 and SOH 2 is the third battery parameter of the second battery
  • E 2 is the total power of the second battery
  • f 1 is the unit price of the power.
  • Charging is based on the battery parameters of the replaced and replaced batteries, which can fully take into account the battery conditions of the first battery and the second battery, which is conducive to accurate billing. At the same time, when using the billing formula for billing, the actual data of the corresponding battery is used for calculation, which can make the billing method more reasonable and improve the accuracy of billing.
  • the method further includes: determining the number of batteries to replace; and performing billing based on the first battery parameter or the second battery parameter includes: based on the first battery parameter or the second battery parameter. , and the number of replacement batteries will be billed.
  • the number of batteries to be replaced and replaced in electrical equipment is different.
  • the number of batteries to be replaced can be flexibly selected according to different needs, which can meet the needs of users in a wider range.
  • considering the number of batteries replaced as an aspect of billing for battery replacement equipment can also avoid the difference in basic costs caused by replacing batteries with different numbers, thereby achieving reasonable billing and improving billing. accuracy.
  • the charging based on the first battery parameter or the second battery parameter and the number of replacement batteries includes: charging according to the following formula:
  • F is the battery replacement fee
  • SOC 1 and SOH 1 are the first battery parameters or the second battery parameters of the first battery
  • E 1 is the total power of the first battery
  • SOC 2 and SOH 2 is the third battery parameter of the second battery
  • E 2 is the total power of the second battery
  • f 1 is the unit price of the power
  • f 2 is the unit price of the battery
  • n is the number of batteries.
  • the number of batteries to be replaced can be flexibly selected according to different needs and billed reasonably. This can make the billing method more reasonable and improve the accuracy of billing.
  • a battery management system including: a processing module, the processing module being used to determine whether to correct a first battery parameter of a first battery, where the first battery is a battery replaced by an electrical device. ; In the case of correcting the first battery parameter, the processing module is configured to send a second battery parameter, which is obtained after correcting the first battery parameter; or, without correcting the first battery parameter; When the first battery parameter is corrected, the processing module is used to send the first battery parameter; wherein the first battery parameter or the second battery parameter is used to charge the first battery. .
  • the processing module is used to obtain correction parameters, the correction parameters are used to determine the usage of the first battery; the processing module is used to determine whether to use the first battery according to the correction parameters. Battery parameters are calibrated.
  • the correction parameter includes a first time period and/or a first number of cycles of the first battery between the first power replacement command and the second power replacement command, and the first power replacement command is To instruct the electrical equipment to replace the first battery, the second battery replacement command is the battery replacement command when the first battery was calibrated last time.
  • the processing module when the first period of time is greater than or equal to a first threshold, or the first number of cycles is greater than or equal to a second threshold, the processing module is configured to determine whether the first period of time is greater than or equal to a second threshold. A battery parameter is corrected; when the first time period is less than the first threshold, and the first cycle number is less than the second threshold, the processing module is used to determine whether to correct the first battery parameter. A battery parameter is calibrated.
  • the processing module is configured to obtain a first correction parameter, which is a correction parameter of the first battery that is recorded when receiving the first battery replacement instruction; the processing The module is configured to obtain a second correction parameter, which is a correction parameter of the first battery that is recorded when receiving the second battery replacement instruction; the processing module is configured to obtain a second correction parameter according to the first correction parameter. parameter and the second correction parameter determine the correction parameter.
  • the processing module when the first battery parameter is corrected, is configured to correct the first battery parameter to obtain the second battery parameter.
  • the processing module is configured to determine the SOC of the first battery after a first period in which the first battery is in a resting state.
  • the first battery parameter includes the health state SOH of the first battery
  • the processing module is used to control the discharge of the first battery from the first SOC to the second SOC; the processing module uses The first battery is controlled to be charged from the second SOC to the first SOC after a second period, and the first battery is in a resting state during the second period; the processing module is configured to charge according to The first SOC and the second SOC determine the SOH of the first battery.
  • the processing module is configured to receive a first power replacement instruction, and the first power replacement instruction is used to instruct the electrical device to replace the first battery.
  • a power swapping device including: a processing module configured to receive second battery parameters when correcting the first battery parameters of the first battery, and the second battery The parameters are obtained after correction of the first battery parameters, and the first battery is a battery replaced by the electrical equipment; or, the processing module is used to receive all the parameters without correcting the first battery parameters.
  • the first battery parameter; the processing module is configured to perform billing according to the first battery parameter or the second battery parameter.
  • the processing module is configured to send a first power replacement instruction, and the first power replacement instruction is used to instruct the electrical equipment to replace the first battery.
  • the processing module is used to obtain the third battery parameters of the second battery, and the second battery is the battery replaced by the electrical device; the processing module is used to obtain the third battery parameter according to the first battery. Charging is performed based on the second battery parameter and the third battery parameter; or, the processing module is configured to charge based on the second battery parameter and the third battery parameter.
  • the processing module is configured to perform billing according to the following formula:
  • F is the battery replacement fee
  • SOC 1 and SOH 1 are the first battery parameters or the second battery parameters of the first battery
  • E 1 is the total power of the first battery
  • SOC 2 and SOH 2 is the third battery parameter of the second battery
  • E 2 is the total power of the second battery
  • f 1 is the unit price of the power.
  • the processing module is used to determine the number of batteries to be replaced; the processing module is used to charge according to the first battery parameter or the second battery parameter and the number of batteries to be replaced.
  • the processing module is configured to perform billing according to the following formula:
  • F is the battery replacement fee
  • SOC 1 and SOH 1 are the first battery parameters or the second battery parameters of the first battery
  • E 1 is the total power of the first battery
  • SOC 2 and SOH 2 is the third battery parameter of the second battery
  • E 2 is the total power of the second battery
  • f 1 is the unit price of the power
  • f 2 is the unit price of the battery
  • n is the number of batteries.
  • a battery including the battery management system as described in any embodiment of the third aspect.
  • a sixth aspect provides a power exchange station, including the power exchange equipment described in any embodiment of the fourth aspect.
  • a seventh aspect provides a device for battery replacement, including a processor and a memory.
  • the memory stores instructions. When the instructions are executed by the processor, the instructions cause the device to perform the above-mentioned first aspect. Or the method described in any embodiment of the second aspect.
  • a computer-readable storage medium stores a computer program. When the computer program is run, it executes as described in any embodiment of the first aspect or the second aspect. method described.
  • Figure 1 is a schematic diagram of a power exchange scenario according to an embodiment of the present application.
  • Figure 2 is a schematic block diagram of a method for battery replacement provided by an embodiment of the present application.
  • FIG. 3 is a schematic block diagram of another method for battery replacement provided by an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of another method for battery replacement provided by an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of another method for battery replacement provided by an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a device for battery replacement provided by an embodiment of the present application.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
  • batteries can be used as a power source to power vehicles and reduce the use of non-renewable resources.
  • charging equipment such as charging piles can be used to charge the vehicle, that is, to charge the battery in the vehicle to realize the cycle of charging and discharging the battery.
  • battery replacement services can also be provided for vehicles through battery swapping stations, that is, the batteries can be quickly removed or installed from the vehicle. The battery removed from the vehicle can be placed in the battery storage mechanism of the battery swap station for charging in preparation for battery swapping for subsequent vehicles entering the battery swap station.
  • the performance of the battery may change. For example, the state of health (SOH) of the battery may decay with the use of the battery. If the cost of a new battery is still calculated based on its SOH, it will cause inaccurate billing and cause losses to users or operators. In addition, as the battery is used, the battery's state of charge (SOC) may also lead to inaccurate measurement results due to the accumulation of errors. If billing is still based on the SOC directly measured by the battery, the same problem will occur. This results in inaccurate billing and losses to users or operators.
  • SOH state of health
  • SOC state of charge
  • embodiments of the present application provide a method for battery replacement.
  • the battery parameters for billing can be reasonably selected under different circumstances to improve billing efficiency. Accuracy, thereby ensuring reasonable billing for the battery replacement process and reducing losses to users or operators.
  • FIG. 1 shows a schematic diagram of an application scenario of the battery replacement method according to the embodiment of the present application.
  • the application scenario of this battery replacement method may involve a battery replacement station 11 , a vehicle 12 and a battery.
  • the battery swap station 11 may refer to a place that provides battery swap services for vehicles.
  • 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 battery swap vehicle, which is not limited here.
  • the vehicle 12 may be removably connected to the battery.
  • the vehicle 12 may be a car, a truck, or other vehicles that use a power battery as a power source.
  • the battery may include a battery disposed in the vehicle 12 and a battery located in the battery swap station 11 for battery swapping.
  • the battery 141 the battery used for power swapping in the battery swap station is referred to as the 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 power other electrical devices in the vehicle 12 .
  • the battery can also power the in-car air conditioner, car player, etc.
  • the battery swap station 11 When the vehicle 12 equipped with the battery 141 drives into the battery swap station 11 , the battery swap station 11 removes the battery 141 from the vehicle 12 through the battery swap device, takes out the battery 142 from the battery swap station 11 , and then installs the battery 142 on the vehicle 12 . Afterwards, the vehicle 12 with the battery 142 installed can drive away from the battery swap station 11 . Through this power swap technology, the vehicle 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 includes a first battery management unit 131 and a charging unit 132 .
  • the power swap cabinet 13 may also be provided with multiple charging compartments 133 , and batteries used for power swapping may be placed in the charging compartments 133 of the power swap cabinet 13 of the power swap station 11 .
  • the first battery management unit 131 may be a battery management unit disposed in the power swap cabinet 13.
  • the first battery management unit 131 may be called a central battery management unit (Central Battery Management Unit, CBMU).
  • 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 charging functions, 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 battery may be provided with a second battery management unit 143 correspondingly.
  • the second battery management unit 143 may be called a slave battery management unit (Slave Battery Management Unit, SBMU).
  • the vehicle 12 is also provided with a third battery management unit 121 .
  • the third battery management unit 121 can be used to manage multiple batteries 141 installed on the vehicle.
  • the third battery management unit 121 can be called a main battery management unit (Main Battery Management Unit, MBMU).
  • MBMU Main Battery Management Unit
  • the SBMU can be implemented using the battery management system (Battery Management System, BMS) of the corresponding battery; the MBMU can be implemented through the control module of the battery disconnect unit (Battery Disconnect Unit, BDU), or through one of the batteries. BMS to achieve.
  • BMS Battery Management System
  • BDU Battery Disconnect Unit
  • 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 management device may include a station control system 151 within the power swap station 11 and a cloud server 152 outside the power swap station 11 , which is not limited here.
  • the station control system 151 can also be called the battery management unit in the power swap station 11 and is used to manage and control the batteries 142 in the power swap station 11 .
  • the first battery management unit 131 can communicate and interact with other units, modules, devices, etc. through wired or wireless means.
  • the second battery management unit 143 can communicate and interact with other units, modules, devices, etc. through wired or wireless methods.
  • the third battery management unit 121 can communicate and interact with other units, modules, devices, etc. through wired or wireless methods.
  • the station control system 151 can communicate and interact with other units, modules, devices, etc. through wired or wireless methods.
  • Wired communication methods include, 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.
  • the first battery management unit 131 may communicate with the second battery management unit 143 to control charging of the battery 142 in the battery compartment 133 .
  • the third battery management unit 121 may communicate with the second battery management unit 143 to centrally manage multiple batteries 141 on the vehicle 12 .
  • the station control system 151 can communicate with the first battery management unit 131, the second battery management unit 143, or the third battery management unit 121 to obtain the battery 141 on the vehicle 12 or the battery 142 in the charging compartment 133. related information.
  • the station control system 151 can also communicate with the cloud server 152 to obtain relevant information about the battery 141 on the vehicle 12 or the battery 142 in the charging compartment 133 .
  • the power-exchanging device can charge for the power exchange, where the power-consuming device can be, for example, the vehicle 12 in FIG. 1 .
  • This application provides a method for battery replacement, as shown in Figure 2.
  • the method 200 shown in Figure 2 can be applied to a battery management system.
  • the battery management system can be, for example, a battery management system (BMS) of the first battery, that is, the battery management system always follows the first battery; also It may be a BMS connected to the first battery through an external interface, that is, the first battery is only connected when relevant parameters of the first battery need to be measured.
  • BMS battery management system
  • method 200 can also be applied to servers, power swapping equipment, and other devices that can process battery-related parameters. It should be understood that this application does not limit the device for executing method 200, that is, any device that can process relevant parameters of the battery is applicable to the embodiment of this application. The embodiment of this application only takes the BMS applied to the first battery as an example for description. The method 200 may include at least part of the following content.
  • S220 Determine whether to correct the first battery parameter of the first battery.
  • the first battery is a battery replaced by the electrical equipment.
  • S240 without correcting the first battery parameter, send the first battery parameter.
  • the first battery parameter or the second battery parameter is used for charging the first battery.
  • the first battery is an old battery that has been used in the electrical equipment.
  • the power replacement equipment needs to replace the first battery and then replace the electrical equipment with a new battery.
  • the battery replacement needs to be billed. In order to avoid inaccurate battery parameter measurement resulting in unreasonable billing, before billing,
  • the BMS needs to determine whether to correct the first battery parameter of the first battery.
  • the first battery parameter of the first battery includes parameters related to the billing method.
  • the first battery parameter may be the SOC, SOH, etc. of the first battery.
  • the BMS sends the first battery parameter to the power replacement device.
  • the first battery parameters are battery parameters that are immediately measured or recorded by the BMS when the battery swapping equipment completes the battery swapping process.
  • the first battery parameter may be the SOC immediately measured by the BMS; for another example, when the power exchange equipment completes the power exchange process, the first battery parameter may be the SOC that the BMS has already measured. Recorded SOH.
  • the battery swapping device receives the first battery parameter and performs billing based on the first battery parameter.
  • the BMS sends the second battery parameter to the battery replacement device.
  • the second battery parameters are battery parameters obtained after the BMS corrects the first battery parameters. For example, when the first battery parameter is SOC, the second battery parameter is the corrected SOC; when the first battery parameter is SOH, the second battery parameter is the corrected SOH.
  • the battery swapping device receives the second battery parameters and performs billing based on the second battery parameters.
  • the BMS obtains correction parameters, which are used to determine the usage of the first battery; and determines whether to correct the first battery parameters according to the correction parameters.
  • whether the first battery parameter needs to be corrected can be determined by correcting the parameter.
  • the correction parameters are used to determine the usage of the first battery, that is, the usage status of the first battery.
  • the first battery parameters need to be tested. Calibration is required to obtain accurate first battery parameters; if the first battery has a shorter usage time or a lower usage frequency, it means that the first battery is less used. In this case, the performance parameters of the battery will not change. is large, or the possibility of a large change is small, then there is no need to correct the first battery parameter, that is, it can be considered that the directly obtained first battery parameter is the accurate first battery parameter.
  • the correction parameters include the first time period and/or the first number of cycles of the first battery between the first battery replacement instruction and the second battery replacement instruction.
  • the instruction is used to instruct the electrical equipment to replace the first battery
  • the second battery replacement instruction is the battery replacement instruction of the first battery when it was calibrated last time.
  • the correction parameter may include a first time period and/or a first cycle number between the first power exchange instruction and the second power exchange instruction, that is, the time interval between the first power exchange instruction and the second power exchange instruction and/or Or the number of cycles of the first battery during this time interval.
  • the first power replacement command is a power replacement command that instructs the electrical equipment to replace the first battery.
  • the second power replacement command is the power replacement command when the first battery was replaced last time and the battery parameters of the first battery were corrected.
  • the second power replacement instruction may also be used to instruct the electrical equipment to replace the first battery.
  • the electrical equipment indicated by the second power replacement instruction and the first power replacement instruction may not be the same electrical equipment.
  • the correction parameters may be used to determine the usage of the first battery between two battery replacement instructions.
  • the first battery replacement instruction is used to instruct the electrical equipment to replace the first battery, and trigger the BMS to determine whether to correct the first battery parameter of the first battery, that is, trigger the BMS to perform step S220.
  • the second power replacement command and the first power replacement command are different commands, and for the first battery, they are not necessarily two consecutive power replacement commands.
  • the BMS determines that the first battery parameter of the first battery needs to be corrected when receiving the nth power replacement command, and determines that it is not necessary to correct the first battery parameter of the first battery when receiving the n+1th power replacement command.
  • the parameters are corrected.
  • the n+2nd power replacement command When receiving the n+2nd power replacement command, it is determined that the first battery parameters of the first battery need to be corrected again. If the n+2th power replacement command is the above-mentioned first power replacement command, then the nth The second power replacement command is the above-mentioned second power replacement command.
  • the power swap command sent by the power swap device carries information about the correction parameters.
  • This information can be recorded; in another possible implementation, the BMS can record the correction parameters when receiving the power replacement instruction.
  • the correction parameter may include a first time period, that is, a time length between the first power swap command and the second power swap command. It can be understood that when the first time period is long, it can be considered that the first battery has not corrected the battery parameters for a long period of time, and the battery performance parameters are more likely to change, so the first battery is Calibrating the first battery parameter is helpful to ensure the accuracy of the first battery parameter.
  • the correction parameter may include the first number of cycles, that is, the number of cycles completed by the battery between the first power replacement command and the second power replacement command, wherein a battery completes one charge and one cycle.
  • the number of discharge cycles is recorded as 1. It can be understood that when the number of first cycles is large, it can be considered that the parameters of the battery have not been corrected during frequent use of the first battery, and the performance parameters of the battery are more likely to change. Therefore, for the first battery Calibrating the battery parameters is helpful to ensure the accuracy of the first battery parameters.
  • the correction parameters may also specifically include the time period and/or the number of cycles corresponding to each battery parameter.
  • the correction parameter may be the time period and/or the number of cycles between the power exchange instruction when the SOC was last corrected and the first power exchange instruction; when the first battery parameter includes In the case of SOH, the correction parameter may be the time period and/or the number of cycles between the power exchange command when the SOH was last corrected and the first power replacement command.
  • the power exchange command when the SOC was last calibrated and the power swap command when the SOH was calibrated last time may be different power swap commands.
  • the time period and/or the number of cycles between the first battery replacement command and the second battery replacement command can reflect the usage of the first battery.
  • Usage In the process of charging the battery, according to the different usage of the battery, Usage,
  • Determining whether to correct the first battery parameter of the first battery is beneficial to improving billing accuracy.
  • the BMS determines to correct the first battery parameter. ; When the first time period is less than the first threshold, and the first number of cycles is less than the second threshold, it is determined not to correct the first battery parameter.
  • the correction parameters may include a first time period and/or a first number of cycles, wherein whether to correct the first battery parameter may be determined solely based on the first time period or the first number of cycles, or the two may be combined.
  • the first threshold when determining whether to correct the first battery parameter according to the first time period, may be set for the first time period. If the first time period is greater than or equal to the first threshold, it is determined to correct the first battery parameter; if the first time period is less than the first threshold, it is determined not to correct the first battery parameter.
  • a second threshold may be set for the first cycle number.
  • the first cycle number is greater than or equal to the second threshold, it is determined to correct the first battery parameter; when the first cycle number is less than the second threshold, it is determined not to correct the first battery parameter.
  • thresholds may be set for the first time period and the first number of cycles respectively.
  • first time period is greater than or equal to the first threshold, or when the first cycle number is greater than or equal to the second threshold, it is determined to correct the first battery parameter; when the first time period is less than the first threshold, and, If the first cycle number is less than the second threshold, it is determined not to correct the first battery parameter.
  • fields for correction parameters can be added to the program run by the BMS.
  • fields for correction parameters such as correction time, cumulative number of cycles, etc.
  • Fields for calibration parameters can be set separately, such as the cumulative usage time during SOH calibration, the cumulative number of cycles during SOH calibration, the cumulative usage time during SOC calibration, the cumulative number of cycles during SOC calibration, etc.
  • the correction parameter By setting a threshold value for the correction parameter to determine whether to correct the first battery parameter, different usage conditions of the first battery can be more accurately distinguished, and when the first battery parameter needs to be corrected, the third battery parameter used for billing is guaranteed to be corrected.
  • the accuracy of the first battery parameter is improved, thereby improving the accuracy of billing; without the need to correct the first battery parameter, the billing result can be pushed to the user in a timely manner, thereby improving the user experience.
  • the BMS obtains the first correction parameter, which is the correction parameter of the first battery that is recorded when receiving the first power replacement instruction; obtains the second correction parameter, and the second correction parameter is obtained.
  • the correction parameter is the correction parameter of the first battery that is recorded when receiving the second battery replacement instruction; the correction parameter is determined based on the first correction parameter and the second correction parameter.
  • the BMS When receiving the first battery replacement instruction, the BMS can record the first correction parameters, such as the cumulative usage time of the first battery, the number of cycles, etc.; when receiving the second battery replacement instruction, the BMS can record the second correction parameters.
  • the correction parameter is of the same type as the first correction parameter.
  • the first correction parameter and the second correction parameter are both correction parameters related to the first battery. According to the first correction parameter and the second correction parameter, it can be determined that the difference between the first power exchange command and the second power replacement command and the first power exchange command are related to the first battery. Battery related calibration parameters.
  • the correction parameters may be used to determine the usage of the first battery between the first power replacement command and the second power replacement command.
  • the BMS may record the first power replacement command and the second power replacement command when the BMS receives the first power replacement command and the second power replacement command.
  • the relevant correction parameters of a battery are used to determine the correction parameters between two battery replacement instructions.
  • the BMS when the BMS receives the second power replacement command, it records the correction parameters of the first battery, which are the second correction parameters; when it receives the first power replacement command, it records the correction parameters of the first battery again, that is, is the first correction parameter.
  • the BMS when the BMS receives the first power swap command and the second power swap command, it can separately record the time when the power swap command is received, or record the relevant time information respectively from the information carried by the two power swap commands, then the The difference in time corresponding to the first power replacement command and the second power replacement command is the correction parameter of the first battery between the first power replacement command and the second power replacement command.
  • the time can refer to a point in time or the accumulated usage time.
  • the BMS can record the number of cycles of the first battery during the use of the first battery, and when receiving the first power replacement command and the second power replacement command, respectively read the BMS records when receiving the power replacement command.
  • the difference in the number of cycles corresponding to the first battery exchange command and the second battery swap command is the correction parameter of the first battery between the first battery swap command and the second battery swap command.
  • the method 200 further includes the following content.
  • S221 The BMS corrects the first battery parameters to obtain the second battery parameters.
  • the BMS determines that the first battery parameter needs to be corrected, the BMS corrects the first battery parameter to obtain the corrected second battery parameter.
  • the first battery parameter may include a variety of battery parameters, such as SOC of the first battery, SOH of the first battery, etc.
  • the BMS can correct the first battery in different ways.
  • the BMS can obtain the corrected battery parameters and send them to the battery replacement equipment, so that the power replacement equipment can perform billing with accurate battery parameters, which is beneficial to improving the accuracy of billing. sex.
  • the first battery parameter includes the state of charge SOC of the first battery.
  • the BMS determines the SOC of the first battery after the first period. During the first period, the first battery is stationary. state.
  • the BMS measures the SOC of the first battery
  • the measurement is usually inaccurate due to the error of the ampere-hour integration method. Therefore, if the SOC of the first battery needs to be corrected, the first battery can be left alone for a period of time. Then determine the SOC of the first battery.
  • the first period may be a preset period of time, or may be a period of time determined by the BMS based on the state that the SOC of the first battery no longer changes.
  • the power exchange equipment can perform billing after completing the correction of the SOC.
  • the SOC can be corrected, so that the battery replacement device can perform billing with more accurate battery parameters, which is beneficial to improving billing accuracy.
  • the first battery parameter includes the health state SOH of the first battery
  • the BMS controls the first battery to discharge from the first SOC to the second SOC; after the second period, the first battery is controlled to be discharged by The second SOC is charged to the first SOC, and the first battery is in a resting state during the second period; the SOH of the first battery is determined based on the first SOC and the second SOC.
  • the SOH of a battery can usually be defined from the perspective of battery capacity or battery charge.
  • SOH can be the percentage of the battery's current capacity to the battery's rated capacity, or it can be the percentage of the current battery's maximum discharge capacity to the new battery's maximum discharge capacity.
  • the SOH of the first battery will decay with the use time or number of uses of the first battery.
  • the first battery can be discharged to a certain extent, left to stand, and then charged to its original capacity to calculate the SOH of the first battery.
  • the BMS can control the first battery to discharge from the first SOC to the second SOC, let the first battery stand for a period of time, and then control the first battery to charge from the second SOC to the first SOC.
  • the charging capacity of this process is Denote it as Q 1 . If the rated total power of the first battery is Q t , the first SOC is recorded as SOC 1 , and the second SOC is recorded as SOC 2 , then the SOH of the first battery can be
  • the battery replacement device can correct the error caused by the change in SOH when charging according to the SOH of the first battery, making the billing more accurate.
  • the method 200 may also include the following content.
  • S210 Receive the first power replacement command, which is used to instruct the electrical equipment to replace the first battery.
  • the first battery replacement instruction may be received from the battery replacement device.
  • the first power replacement command is used to instruct the electrical equipment to replace the first battery.
  • the BMS receives the first power replacement command, it can perform the power replacement operation that the BMS needs to perform according to the first power replacement command.
  • the first battery swap command can also trigger the BMS to determine whether to correct the battery parameters based on the correction parameters to ensure that the billing-related battery parameters sent by the BMS to the battery swap device are accurate.
  • the first battery swap command triggers the BMS to determine the corrected battery parameters, which can instruct the BMS to correct the battery parameters when needed. At the same time, this can ensure that the relevant battery parameters received by the battery swap equipment are accurate, thus helping to improve the battery Accuracy of billing.
  • This application also provides a method 201 for battery replacement, as shown in Figure 5.
  • the method 201 shown in Figure 5 can be executed by a power replacement device, such as the station control system 151 in Figure 1.
  • method 201 can also be applied to devices such as servers and battery management systems that can process battery-related parameters. It should be understood that this application does not limit the device for executing method 201, that is, any device that can process relevant parameters of the battery is applicable to the embodiments of this application.
  • Method 201 may include at least part of the following.
  • S231 When correcting the first battery parameter of the first battery, receive the second battery parameter.
  • the second battery parameter is obtained after correcting the first battery parameter.
  • the first battery is a battery replaced by the electrical equipment. .
  • S241 receive the first battery parameter without correcting the first battery parameter.
  • S250 Perform billing based on the first battery parameter or the second battery parameter.
  • the BMS of the first battery can determine whether to correct the first battery parameter of the first battery, and send different battery parameters to the power swapping device for billing under different circumstances. Then the power swapping device can also Different battery parameters are received, and billing is performed based on the received battery parameters.
  • the accuracy of the battery parameters can be ensured when the first battery is in different situations, and reasonable billing can be achieved, thereby improving the accuracy of billing.
  • method 201 further includes: the power replacement device sends a first power replacement instruction, and the first power replacement instruction is used to instruct the power-consuming device to replace the first battery.
  • the power swapping device may send a first power swapping instruction to the BMS to instruct the BMS to control the power-consuming device to remove the first battery.
  • the first battery replacement command can also trigger the BMS to determine whether the first battery parameter of the first battery needs to be judged, so that when the BMS provides the relevant battery parameters of the first battery to the battery replacement device, it can provide an accurate battery. parameter.
  • the first battery swap command triggers the BMS to determine the corrected battery parameters, which can instruct the BMS to correct the battery parameters when needed. At the same time, this can ensure that the relevant battery parameters received by the battery swap equipment are accurate, thus helping to improve the battery Accuracy of billing.
  • method 201 also includes: the power replacement equipment obtains the third battery parameter of the second battery, and the second battery is the battery replaced by the electrical equipment; the power replacement equipment obtains the third battery parameter of the second battery according to the first battery parameter. and third battery parameters; or, charging is performed based on the second battery parameters and the third battery parameters.
  • the power replacement equipment needs to replace the old battery that has been used in the electrical equipment, and then replace the old battery with a new battery for the electrical equipment.
  • the old battery that is replaced is the first battery
  • the new battery that is replaced is the first battery. for the second battery.
  • the battery replacement equipment needs to obtain relevant battery parameters of the second battery in addition to the relevant battery parameters of the first battery.
  • the second battery can be stored at a battery swap station before being replaced, and the battery parameters related to the second battery can be directly measured by the BMS of the second battery.
  • the battery replacement device performs billing based on the second battery parameter of the first battery and the third battery parameter of the second battery;
  • the power exchange device performs billing based on the first battery parameter of the first battery and the third battery parameter of the second battery.
  • an instruction may also be issued to the second battery to instruct the BMS of the second battery to determine whether battery parameters related to the second battery need to be corrected.
  • the BMS of the second battery sends the corrected battery parameters to the battery replacement device, then the third battery parameters are the corrected battery parameters; when there is no need to correct the battery parameters of the second battery.
  • the BMS of the second battery directly sends the obtained battery parameters to the battery replacement device, then the third battery parameters are the battery parameters that have not been corrected.
  • Performing billing based on the relevant battery parameters of the first battery and the second battery can make the billing method more reasonable and improve the accuracy of billing.
  • the power exchange equipment can be charged according to the following formula (1).
  • F is the battery replacement cost
  • SOC 1 and SOH 1 are the first battery parameters or the second battery parameters of the first battery
  • E 1 is the total power of the first battery
  • SOC 2 and SOH 2 are the third battery parameters of the second battery.
  • Battery parameters E 2 is the total power of the second battery
  • f 1 is the unit price of the power.
  • Formula (1) is to subtract the actual power of the first battery from the actual power of the second battery, and then multiply the difference by the unit price of the power, which is the fee that the user needs to pay.
  • the SOC and SOH of the first battery are the actual battery parameters of the first battery, that is, when correction is required, SOC 1 and/or SOH 1 are the corrected battery parameters; when correction is not required, In the case of correction, it can be considered that the SOC 1 and/or SOH 1 directly obtained by the BMS are accurate.
  • Charging is based on the battery parameters of the replaced and replaced batteries, which can fully take into account the battery conditions of the first battery and the second battery, which is conducive to accurate billing. At the same time, when using the billing formula for billing, the actual data of the corresponding battery is used for calculation, which can make the billing method more reasonable and improve the accuracy of billing.
  • method 201 further includes: the power replacement device determines the number of batteries to be replaced; and performs billing based on the first battery parameter or the second battery parameter and the number of batteries to be replaced.
  • multiple batteries can be installed on the same power-consuming device.
  • the power-exchange device can also determine the number of batteries to be replaced, and charge based on the number of batteries to be replaced. For example, when replacing an old battery, the electrical equipment only replaces one first battery; when replacing a new battery for the electrical equipment, the electrical equipment requires multiple second batteries to be replaced. Similarly, when replacing old batteries, the electrical equipment replaces multiple first batteries; when replacing new batteries for the electrical equipment, the electrical equipment only needs to replace one second battery. Then, when charging the battery replacement process, the battery replacement equipment needs to consider the difference in the quantity of the first battery and the second battery. Specifically, the battery replacement equipment may be charged based on the difference in quantity between the first battery and the second battery, or may be charged based on the number of batteries replaced or batteries replaced.
  • the number of batteries to be replaced and replaced in electrical equipment is different.
  • the number of batteries to be replaced can be flexibly selected according to different needs, which can meet the needs of users in a wider range.
  • considering the number of batteries replaced as an aspect of billing for battery replacement equipment can also avoid the difference in basic costs caused by replacing batteries with different numbers, thereby achieving reasonable billing and improving billing. accuracy.
  • the power exchange equipment can be charged according to the following formula (2).
  • F is the battery replacement fee
  • SOC 1 and SOH 1 are the first battery parameters or the second battery parameters of the first battery
  • E 1 is the total power of the first battery
  • SOC 2 and SOH 2 is the third battery parameter of the second battery
  • E 2 is the total power of the second battery
  • f 1 is the unit price of the power
  • f 2 is the unit price of the battery
  • n is the number of batteries.
  • Formula (2) is based on formula (1) and adds the calculation of the basic cost of the battery.
  • f 2 is the basic cost of a battery
  • n can be the number of batteries replaced or the number of batteries replaced, or it can be the difference between the two.
  • the number of batteries to be replaced can be flexibly selected according to different needs and billed reasonably. This can make the billing method more reasonable and improve the accuracy of billing.
  • This application also provides a battery management system, including a processing module, which may also be a processor in the battery management system.
  • the processing module is used to determine whether to correct the first battery parameters of the first battery, and the first battery is a battery replaced by the electrical equipment; in the case of correcting the first battery parameters, the processing module is used to send the second battery parameter, the second battery parameter is obtained after correction of the first battery parameter; or, without correcting the first battery parameter, the processing module is used to send the first battery parameter; wherein, the first battery parameter or the second battery parameter Used for billing the first battery.
  • the processing module is used to obtain correction parameters, and the correction parameters are used to determine the usage of the first battery; and the processing module is used to determine whether to correct the first battery parameters according to the correction parameters.
  • the correction parameters include the first time period and/or the first number of cycles of the first battery between the first battery replacement instruction and the second battery replacement instruction.
  • the instruction is used to instruct the electrical equipment to replace the first battery
  • the second battery replacement instruction is the battery replacement instruction of the first battery when it was calibrated last time.
  • the processing module when the first period of time is greater than or equal to the first threshold, or the first number of cycles is greater than or equal to the second threshold, the processing module is configured to determine the need for the first battery. The parameters are corrected; when the first time period is less than the first threshold and the first number of cycles is less than the second threshold, the processing module is used to determine not to correct the first battery parameter.
  • the processing module is configured to obtain a first correction parameter, which is a correction parameter of the first battery that is recorded when receiving the first power replacement instruction; the processing module is configured to obtain The second correction parameter is the correction parameter of the first battery that is recorded when receiving the second battery replacement instruction; the processing module is configured to determine the correction parameter according to the first correction parameter and the second correction parameter.
  • the processing module is configured to correct the first battery parameter to obtain the second battery parameter.
  • the processing module is configured to determine the SOC of the first battery after the first period, during which the first battery is in a resting state.
  • the first battery parameter includes the health state SOH of the first battery
  • the processing module is used to control the first battery to discharge from the first SOC to the second SOC
  • the processing module is used to control the discharge of the first battery from the first SOC to the second SOC
  • the processing module is used to determine the SOH of the first battery according to the first SOC and the second SOC.
  • the processing module is configured to receive a first power replacement instruction, and the first power replacement instruction is used to instruct the electrical equipment to replace the first battery.
  • This application also provides a power exchange device, including a processing module.
  • the processing module may also be a processor in the power exchange device.
  • the processing module is configured to receive a second battery parameter when correcting the first battery parameter of the first battery.
  • the second battery parameter is obtained by correcting the first battery parameter.
  • the first battery is a battery replaced by the electrical equipment. ;
  • the processing module is configured to receive the first battery parameter without correcting the first battery parameter; the processing module is configured to perform billing based on the first battery parameter or the second battery parameter.
  • the processing module is configured to send a first power replacement instruction, and the first power replacement instruction is used to instruct the electrical equipment to replace the first battery.
  • the processing module is used to obtain the third battery parameter of the second battery, and the second battery is a battery replaced by the electrical device; the processing module is used to obtain the third battery parameter based on the first battery parameter and the third battery parameter. Perform billing based on the battery parameters; or, the processing module is configured to perform billing based on the second battery parameters and the third battery parameters.
  • the processing module is used to perform billing according to the following formula:
  • F is the battery replacement fee
  • SOC 1 and SOH 1 are the first battery parameters or the second battery parameters of the first battery
  • E 1 is the total power of the first battery
  • SOC 2 and SOH 2 is the third battery parameter of the second battery
  • E 2 is the total power of the second battery
  • f 1 is the unit price of the power.
  • the processing module is used to determine the number of replacement batteries; the processing module is used to perform billing based on the first battery parameter or the second battery parameter and the number of replacement batteries.
  • the processing module is used to perform billing according to the following formula:
  • F is the battery replacement fee
  • SOC 1 and SOH 1 are the first battery parameters or the second battery parameters of the first battery
  • E 1 is the total power of the first battery
  • SOC 2 and SOH 2 is the third battery parameter of the second battery
  • E 2 is the total power of the second battery
  • f 1 is the unit price of the power
  • f 2 is the unit price of the battery
  • n is the number of batteries.
  • This application also provides a battery, including the battery management system in any of the above embodiments.
  • This application also provides a power exchange station, including: the power exchange equipment in any of the above embodiments.
  • This application also provides a device 600 for battery replacement, as shown in Figure 6, including a processor 601 and a memory 602.
  • the memory 602 stores instructions. When the instructions are run by the processor 601, the device 600 executes the above steps. The method described in any embodiment.
  • This application also provides a computer-readable storage medium that stores a computer program. When the computer program is run, the method described in any of the above embodiments is executed.

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Des modes de réalisation de la présente demande concernent un procédé et un appareil d'échange de batterie. Au moyen d'une détermination de l'utilisation d'une batterie et d'une sélection de différents paramètres de batterie pour une facturation dans différentes situations, une facturation précise peut être obtenue. Le procédé d'échange de batterie comprend les étapes consistant à : déterminer s'il faut corriger des premiers paramètres de batterie d'une première batterie, la première batterie étant une batterie remplacée d'un dispositif électrique ; et si les premiers paramètres de batterie doivent être corrigés, envoyer des seconds paramètres de batterie, les seconds paramètres de batterie étant obtenus par correction des premiers paramètres de batterie ; ou, si les premiers paramètres de batterie ne doivent pas être corrigés, envoyer les premiers paramètres de batterie, les premiers paramètres de batterie ou les seconds paramètres de batterie étant utilisés pour facturer la première batterie.
PCT/CN2022/104204 2022-07-06 2022-07-06 Procédé et appareil d'échange de batterie WO2024007212A1 (fr)

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PCT/CN2022/104204 WO2024007212A1 (fr) 2022-07-06 2022-07-06 Procédé et appareil d'échange de batterie

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CN114333156A (zh) * 2021-12-24 2022-04-12 英华达（南京）科技有限公司 换电电池的计费方法和计费装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011150564A (ja) * 2010-01-22 2011-08-04 Masatoshi Baba 電気自動車のレンタル充電池課金システム
CN102959418B (zh) * 2010-06-24 2016-04-27 松下知识产权经营株式会社 获取电池的劣化度的方法和系统
CN108263222A (zh) * 2016-12-30 2018-07-10 蔚来汽车有限公司 确定电动汽车电池包更换的效用的方法和装置
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