WO2024007213A1

WO2024007213A1 - Method and apparatus for battery swapping

Info

Publication number: WO2024007213A1
Application number: PCT/CN2022/104207
Authority: WO
Inventors: 陈伟峰; 张萼松; 马海
Original assignee: 时代电服科技有限公司
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2024-01-11
Also published as: CN117941124A

Abstract

Provided in the embodiments of the present application are a method and apparatus for battery swapping. By means of correcting battery parameters, accurate battery parameters can be used for charging during charging, such that accurate charging is realized. The method for battery swapping comprises: correcting a first battery parameter of a first battery, wherein the first battery is a battery which is swapped from an electric device; and sending a second battery parameter of the first battery, wherein the second battery parameter is obtained after the first battery parameter is corrected, and the second battery parameter is used for charging the first battery.

Description

Method and device for battery replacement

Technical field

The present application relates to the technical field of electric vehicles, and in particular to a method and device for battery replacement.

Background technique

With the rapid development of electric vehicle technology, electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy-saving and environmentally friendly advantages. At present, in addition to charging the batteries in electric vehicles through charging devices to ensure the continuous operation of electric vehicles, the batteries in electric vehicles can also be replaced through battery swap stations to quickly replenish energy for electric vehicles that are insufficient in energy.

However, how to accurately bill the battery after replacing the battery is still a problem that needs to be solved.

Contents of the invention

This application provides a method and device for battery replacement. By correcting the battery parameters, accurate battery parameters can be used for billing, thereby achieving accurate billing.

In a first aspect, a method for battery replacement is provided, applied to a battery management system, including: correcting a first battery parameter of a first battery, where the first battery is a battery replaced by an electrical device; Send the second battery parameter of the first battery, the second battery parameter is obtained after correction by the first battery parameter, and the second battery parameter is used for charging the first battery.

Correcting the first battery parameters of the first battery before billing can ensure that accurate battery parameters are used for billing, which can improve the accuracy of battery parameters while also improving the accuracy of billing.

In some embodiments, correcting the first battery parameters of the first battery includes: obtaining correction parameters, the correction parameters being used to determine the usage of the first battery; and based on the correction parameters and the correction model. , to obtain the second battery parameter, and the correction model is used to determine the second battery parameter according to the historical record of the first battery parameter.

By calibrating the battery parameters of the first battery through the calibration model, the corrected battery parameters can be quickly obtained to avoid delayed billing caused by too long calibration time that affects the user experience. At the same time, the correction model corrects the first battery parameters by referring to the historical records of the first battery parameters, and can accurately predict the changing trend of the first battery parameters, thereby obtaining more accurate battery parameters, improving the accuracy of the battery parameters, and also Can improve billing accuracy.

In some embodiments, the first battery parameter includes a state of health SOH of the first battery.

During the use of the battery, the SOH of the battery will hardly increase significantly. Therefore, the model trained by the SOH of the first battery is usually relatively simple, which can avoid overly complex calculations occupying running resources, and at the same time, it can be processed in a short time. Calibration results are obtained within 1 hour, which not only improves battery accuracy but also improves billing efficiency.

In some embodiments, 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. In the process of charging the battery, according to the different usage of the 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.

In some embodiments, correcting the first battery parameter of the first battery includes: during the first time period, it is greater than or equal to a first threshold, and/or, the first number of cycles is greater than or equal to In the case of the second threshold, the first battery parameter is corrected.

By setting a threshold value for the correction parameter to determine the correction of the first battery parameter, the different usage conditions of the first battery can be more accurately judged. When the first battery parameter needs to be corrected, the first battery parameter used for billing is guaranteed to be corrected. Accuracy of battery parameters, thereby improving billing accuracy.

In some embodiments, 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.

By recording the correction parameters of the first battery during the last correction, and using this to determine the correction parameters between the two power replacement instructions, it is helpful to accurately determine whether the battery parameters need to be corrected for the power replacement, so that the battery parameters can be obtained Accurate battery parameters improve billing accuracy.

In some embodiments, the first battery parameter includes a state of charge SOC of the first battery, and correcting the first battery parameter of the first battery includes: determining the first battery parameter after a first period of time. The SOC of the battery, the first battery is in a resting state during the first period.

By letting the first battery stand, 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.

In some embodiments, the method further includes: receiving 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.

In a second aspect, a method for battery replacement is provided, applied to power replacement equipment, including: receiving a second battery parameter of a first battery, the second battery parameter being corrected by the first battery parameter. ; Perform billing based on the second battery parameters.

Using the corrected battery parameters for billing can ensure the accuracy of the battery parameters used for billing, thereby achieving reasonable billing and improving billing accuracy.

In some embodiments, 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.

In some embodiments, 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.

In some embodiments, charging according to the first battery parameter or the second battery parameter includes charging according to the following formula:

F=(SOC ₂ ×E ₂ ×SOH ₂ -SOC ₁ ×E ₁ ×SOH ₁ )×f ₁ .

Among them, 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, and 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.

In some embodiments, 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. At the same time, 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.

In some embodiments, 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=(SOC ₂ ×E ₂ ×SOH ₂ -SOC ₁ ×E ₁ ×SOH ₁ )×f ₁ +f ₂ ×n.

Among them, 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, and n is the number of batteries.

By considering the number of batteries to be replaced and batteries to be replaced, 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.

In a third aspect, a battery management system is provided, including: a processing module, the processing module being used to correct a first battery parameter of a first battery, where the first battery is a battery replaced by an electrical device; The processing module is used to send a second battery parameter of the first battery, the second battery parameter is obtained after correction of the first battery parameter, and the second battery parameter is used to calculate the first battery. fee.

In some embodiments, the processing module is used to obtain correction parameters, and the correction parameters are used to determine the usage of the first battery;

The processing module is used to obtain the second battery parameter according to the correction parameter and the correction model, and the correction model is used to determine the second battery parameter according to the historical record of the first battery parameter.

In some embodiments, 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 In order to instruct the electrical equipment to replace the first battery, the second power replacement command is the power replacement command of the first battery when it was calibrated last time.

In some embodiments, the processing module is configured to perform the processing on the first time period when the first time period is greater than or equal to a first threshold, and/or when the first number of cycles is greater than or equal to a second threshold. The first battery parameters are calibrated.

In some embodiments, 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.

In some embodiments, 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.

In some embodiments, 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.

In a fourth aspect, a power exchange device is provided, including: a processing module configured to receive a second battery parameter of a first battery, where the second battery parameter is obtained by correcting the first battery parameter; The processing module is used for charging according to the second battery parameter.

In some embodiments, 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.

In some embodiments, 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.

In some embodiments, the processing module is configured to perform billing according to the following formula:

F=(SOC ₂ ×E ₂ ×SOH ₂ -SOC ₁ ×E ₁ ×SOH ₁ )×f ₁ .

In some embodiments, 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.

F=(SOC ₂ ×E ₂ ×SOH ₂ -SOC ₁ ×E ₁ ×SOH ₁ )×f ₁ +f ₂ ×n.

In a fifth aspect, a battery is provided, 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.

In an eighth aspect, a computer-readable storage medium is provided. The 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.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on the drawings without exerting creative efforts.

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 a device for battery replacement provided by an embodiment of the present application.

In the drawings, the drawings are not drawn to actual scale.

Detailed ways

The embodiments of the present application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

In the description of this application, it should be noted that, unless otherwise stated, "plurality" means more than two; the terms "upper", "lower", "left", "right", "inside", " The orientation or positional relationship indicated such as "outside" is only for the convenience of describing the present application and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. Application restrictions. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable error range. "Parallel" is not parallel in the strict sense, but within the allowable error range.

The directional words appearing in the following description are the directions shown in the figures and do not limit the specific structure of the present application. In the description of this application, it should also be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. Detachable connection, or integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application may be understood based on specific circumstances.

Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the technical field of this application; the terms used in the specification of this application are only for describing specific implementations. The purpose of the examples is not intended to limit the application; the terms "including" and "having" and any variations thereof in the description and claims of the application and the above description of the drawings are intended to cover non-exclusive inclusion.

Reference in this application to "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.

With the development of new energy technology, the application fields of batteries are becoming more and more extensive. For example, they can be used as a power source to power vehicles and reduce the use of non-renewable resources. When the power of the battery in the vehicle is not enough to support the continued driving of the vehicle, 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. Alternatively, 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.

After the battery has been used for a period of time or a certain number of cycles, 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.

In view of this, embodiments of the present application provide a method for battery replacement. By correcting the battery parameters of the battery, the corrected and accurate battery parameters can be used for billing, thereby improving billing. The accuracy ensures reasonable billing for the battery replacement process and reduces the losses of users or operators.

Figure 1 shows a schematic diagram of an application scenario of the battery replacement method according to the embodiment of the present application. As shown in FIG. 1 , 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. For example, 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. In some examples, 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. In order to facilitate distinction, as shown in FIG. 1 , the battery to be replaced in the vehicle 12 is referred to as the battery 141 , and 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. In terms of scale, the battery can be a battery cell, a battery module or a battery pack, which is not limited here. In addition to being used as a power source to power the motor of the vehicle 12 , the battery can also power other electrical devices in the vehicle 12 . For example, the battery can also power the in-car air conditioner, car player, etc.

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.

As shown in FIG. 1 , 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. For example, 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 . In some examples, 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 battery may be provided with a second battery management unit 143 correspondingly. For example, 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. For example, the third battery management unit 121 can be called a main battery management unit (Main Battery Management Unit, MBMU).

In some embodiments, 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.

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 . When the management device has a distributed structure, the management device may also be partially installed inside the power swap station 11 and partially outside the power swap station 11 . For example, as shown in FIG. 1 , 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 .

Optionally, 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.

For example, 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 . For another example, 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 . For another example, 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. For another example, 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 .

After the old battery is replaced from the power-consuming device and a new battery is replaced for the power-consuming device, 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. Optionally, 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. This embodiment of the present 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: The BMS corrects the first battery parameter of the first battery, which is a battery replaced by the electrical equipment.

S230: The BMS sends the second battery parameter of the first battery. The second battery parameter is obtained after correcting the first battery parameter. 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. During the power replacement process, the power replacement equipment needs to replace the first battery and then replace the electrical equipment with a new battery. After the battery replacement equipment replaces the battery of the electrical equipment, 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 correct the first battery parameter of the first battery. The first battery parameter of the first battery includes parameters related to the billing method. For example, the first battery parameter may be the SOC, SOH, etc. of the first battery.

The second battery parameter is the battery parameter obtained after the BMS corrects the first battery parameter. It can be considered as the actual battery parameter of the first battery. Therefore, using the second battery parameter for billing can obtain a more accurate billing result. 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 BMS sends the second battery parameters of the first battery to the power swapping device, and the power swapping device can receive the second battery parameters and perform billing based on the second battery parameters.

According to some embodiments of the present application, optionally, the BMS obtains correction parameters, which are used to determine the usage of the first battery; according to the correction parameters and the correction model, the second battery parameters are obtained, and the correction model is used to determine the usage of the first battery according to the correction parameters and the correction model. The history of parameters determines the second battery parameters.

The correction parameters are used to determine the usage of the first battery, that is, the usage status of the first battery. For example, the correction parameter may be the usage time of the first battery; for another example, the correction parameter may be the number of cycles of the first battery. Specifically, if the first battery is used for a longer time or is used more frequently, it means that the first battery is used more frequently, and the performance parameters of the battery may change greatly; if the first battery is used for a shorter time or is used more frequently, If it is lower, it means that the usage of the first battery is low, and the changes in various performance parameters of the battery may be small.

The correction model is a model that corrects the first battery parameter, and the model may be, for example, a neural network. In the process of training the correction model, the correction model can be trained through multiple sets of correction parameters and battery parameters, and the calculation parameters in the correction model can be adjusted so that the battery parameters obtained after inputting the correction parameters into the correction model are consistent with the first If the actual battery parameters of a battery match, that is, within a certain error range, the battery parameters output by the calibration model can be considered accurate.

The battery parameters used for training may be a historical record of the first battery parameters. For example, when the first battery is in use, the BMS records the first battery parameters every once in a while or every certain number of cycles, then Each historical record of the first battery parameter can be associated with a corresponding correction parameter, and the correction model can be trained using the one-to-one corresponding battery parameters and correction parameters.

For the first battery of the same type or model, the calibration model can be trained in advance through experiments, and the BMS can directly input the calibration parameters to the calibration model to obtain the corresponding second battery parameters. Or, in a possible implementation, the BMS can collect the correction parameters and battery parameters of the first battery during use of the first battery and train the model, and then input the corresponding correction parameters when the battery parameters need to be corrected. Calibrate the model to obtain the second battery parameters.

In the process of using the correction model to correct the first battery parameters, the BMS can obtain the correction parameters, such as a time period or a certain number of cycles, and input the correction parameters into the correction model to obtain the second battery parameters. It should be understood that the second battery parameter is the corrected first battery parameter, which is a different value of the same battery parameter from the first battery parameter. When the battery parameter of the first battery changes little, the first battery parameter It may also be the same as the second battery parameters.

According to some embodiments of the present application, optionally, the first battery parameter includes the health state SOH of the first battery.

The SOH of a battery can also be used to indicate the aging degree of the battery, which can usually be defined from the perspective of battery capacity or battery power. For example, 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 tends to attenuate as the usage of the first battery increases. In a possible implementation, a correction model can be used to correct the SOH of the first battery.

According to some embodiments of the present application, optionally, 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, and 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. For example, 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. 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.

In order to determine the correction parameters between the first power swap command and the second power swap command, in a possible implementation, the power swap command sent by the power swap device carries information about the correction parameters. When the BMS receives the power swap command, This information can be recorded; in another possible implementation, the BMS can record the correction parameters when receiving the power replacement instruction.

In a possible implementation, 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.

In another possible implementation, 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.

When the first battery parameters include multiple battery parameters, the correction parameters may also specifically include the time period and/or the number of cycles corresponding to each battery parameter. For example, when the first battery parameter includes SOC, 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.

According to some embodiments of the present application, optionally, the first battery parameter is corrected when the first time period is greater than or equal to the first threshold, and/or the first cycle number is greater than or equal to the second threshold. .

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. Sure.

Optionally, when determining whether to correct the first battery parameter according to the first time period, the first threshold 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.

Optionally, when determining whether to correct the first battery parameter based on the first cycle number, a second threshold may be set for the first cycle number. When the first cycle number is greater than or equal to the second threshold, it is determined to correct the first battery parameter.

Optionally, when determining whether to correct the first battery parameter in combination with the first time period and the first number of cycles, thresholds may be set for the first time period and the first number of cycles respectively. When the first time period is greater than or equal to the first threshold, and the first number of cycles is greater than or equal to the second threshold, it is determined to correct the first battery parameter.

In a possible implementation, fields for correction parameters, such as correction time, cumulative number of cycles, etc., can be added to the program run by the BMS. In the case where the first battery parameters include multiple battery parameters, the fields of the correction parameters can be set respectively, such as the accumulated usage time during SOH correction, the accumulated number of cycles during SOH correction, the accumulated usage time during SOC correction, and SOC correction. The accumulated number of cycles etc.

According to some embodiments of the present application, optionally, 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.

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. In order to obtain the correction parameters, 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.

Specifically, 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.

For example, 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.

For another example, 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.

According to some embodiments of the present application, optionally, the SOC of the first battery is determined after a first period in which the first battery is in a resting state.

When 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. In order to ensure the accuracy of the SOC used for billing, the power exchange equipment can perform billing after completing the correction of the SOC.

According to some embodiments of the present application, optionally, as shown in Figure 3, method 200 may also include the following content.

S210: The BMS receives the first power replacement command, which is used to instruct the electrical equipment to replace the first battery.

Before the BMS determines whether to correct the first battery parameter of 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. When 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. At the same time, 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.

This application also provides a method 201 for battery replacement, as shown in Figure 4. The method 201 shown in Figure 4 can be executed by a power replacement device, such as the station control system 151 in Figure 1. Optionally, 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.

S230: Receive the second battery parameter of the first battery, and the second battery parameter is obtained by correcting the first battery parameter.

S240: Charge based on the second battery parameters.

The second battery parameters are the battery parameters obtained after the BMS corrects the first battery parameters. When the battery replacement equipment needs to charge for the battery replacement process, the BMS can send the corrected second battery parameters to the battery replacement equipment, so that The battery replacement equipment can be billed based on the corrected battery parameters. Compared with the first battery parameter, the second battery parameter as a corrected battery parameter can more accurately reflect the state of the first battery when it is replaced from the electrical device.

According to some embodiments of the present application, optionally, method 201 further includes: the power replacement device sending a first power replacement instruction, where the first power replacement instruction is used to instruct the electrical 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. At the same time, 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.

According to some embodiments of the present application, optionally, method 201 also includes: obtaining the third battery parameter of the second battery, where the second battery is a battery replaced by the electrical device; performing the process according to the first battery parameter and the third battery parameter. Charging; or, charging based on the second battery parameter and the third battery parameter.

During the power replacement process, 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, and the new battery that is replaced is the first battery. for the second battery. When charging the battery replacement process of the first 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. Therefore, when the BMS of the first battery determines that the first battery parameter of the first battery needs to be corrected, 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; When the BMS of the first battery determines that the first battery parameter of the first battery does not need to be corrected, 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.

In a possible implementation, before replacing the second battery with the electrical device, 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. When the battery parameters of 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. When the battery parameters of the second battery are corrected, 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.

According to some embodiments of the present application, optionally, the power exchange equipment can be charged according to the following formula (1).

F＝(SOC ₂ ×E ₂ ×SOH ₂ -SOC ₁ ×E ₁ ×SOH ₁ )×f ₁ (1)

Among them, 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, and f ₁ is the unit price of the power.

When the power exchange equipment charges the first battery, it may specifically charge according to the above formula (1). 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. In formula (1), 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.

According to some embodiments of the present application, optionally, method 201 further includes: determining the number of replacement batteries; and performing billing based on the first battery parameter or the second battery parameter and the number of replacement batteries.

In a possible implementation, multiple batteries can be installed on the same power-consuming device. During the power replacement process, 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.

According to some embodiments of the present application, optionally, the power exchange equipment can be charged according to the following formula (2).

F＝(SOC ₂ ×E ₂ ×SOH ₂ -SOC ₁ ×E ₁ ×SOH ₁ )×f ₁ +f ₂ ×n (2)

Among them, 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, f ₂ is the unit price of the battery, and n is the number of batteries.

When the number of batteries replaced by the electrical equipment is different from the number of batteries replaced, the billing can be carried out specifically according to the above formula (2). Formula (2) is based on formula (1) and adds the calculation of the basic cost of the battery. Among them, f ₂ is the basic cost of a battery, and n can be the number of batteries replaced or the number of batteries replaced, or it can be the difference between the two.

This application also provides a battery management system, including a processing module, which may be a processor in the battery management system. The processing module is used to correct the first battery parameters of the first battery, which is a battery replaced by the electrical equipment; the processing module is used to send the second battery parameters of the first battery, and the second battery parameters are obtained from the first battery. After parameter correction, the second battery parameters are used to charge the first battery.

According to some embodiments of the present application, optionally, the processing module is used to obtain correction parameters, and the correction parameters are used to determine the usage of the first battery;

According to some embodiments of the present application, optionally, the processing module is configured to perform processing on the first time period when the first time period is greater than or equal to the first threshold, and/or the first cycle number is greater than or equal to the second threshold. Battery parameters are calibrated.

According to some embodiments of the present application, optionally, the processing module is configured to obtain a first correction parameter, where the first correction parameter 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 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 determine the correction parameter according to the first correction parameter and the second correction parameter.

According to some embodiments of the present application, optionally, 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.

According to some embodiments of the present application, optionally, 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 be a processor in the power exchange device. The processing module is used to receive the second battery parameter of the first battery, and the second battery parameter is obtained by correcting the first battery parameter; the processing module is used to perform billing according to the second battery parameter.

According to some embodiments of the present application, optionally, the processing module is configured to send a first power replacement instruction, where the first power replacement instruction is used to instruct the electrical equipment to replace the first battery.

According to some embodiments of the present application, optionally, 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.

According to some embodiments of the present application, optionally, the processing module is used to perform billing according to the following formula:

F=(SOC ₂ ×E ₂ ×SOH ₂ -SOC ₁ ×E ₁ ×SOH ₁ )×f ₁ .

According to some embodiments of the present application, optionally, 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.

F=(SOC ₂ ×E ₂ ×SOH ₂ -SOC ₁ ×E ₁ ×SOH ₁ )×f ₁ +f ₂ ×n.

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 500 for battery replacement, as shown in Figure 5, including a processor 501 and a memory 502. The memory 502 stores instructions. When the instructions are run by the processor 501, the device 500 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.

While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for components thereof without departing from the scope of the application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

A method for battery replacement, characterized by including:

Calibrate the first battery parameters of the first battery, where the first battery is a battery replaced by the electrical equipment;

Send the second battery parameter of the first battery, the second battery parameter is obtained after correction by the first battery parameter, and the second battery parameter is used for charging the first battery.
The method of claim 1, wherein correcting the first battery parameter of the first battery includes:

Obtain correction parameters, the correction parameters are used to determine the usage of the first battery;

The second battery parameter is obtained according to the correction parameter and the correction model, and the correction model is used to determine the second battery parameter according to the historical record of the first battery parameter.
The method of claim 2, wherein the first battery parameter includes a state of health (SOH) of the first battery.
The method according to claim 2 or 3, characterized in that the correction parameters include the first time period and/or the first number of cycles of the first battery between the first battery replacement command and the second battery replacement command. , the first power replacement command is used to instruct the electrical equipment to replace the first battery, and the second power replacement command is the power replacement command when the first battery was calibrated last time.
The method of claim 4, wherein correcting the first battery parameter of the first battery includes:

When the first period of time is greater than or equal to the first threshold, and/or the first number of cycles is greater than or equal to the second threshold, the first battery parameter is corrected.
The method according to any one of claims 2 to 5, characterized in that said obtaining correction parameters includes:

Obtain a first correction parameter, which is a correction parameter of the first battery that is recorded when receiving the first battery replacement instruction;

Obtain a second correction parameter, which is a correction parameter of the first battery that is recorded when receiving the second battery replacement command;

The correction parameter is determined based on the first correction parameter and the second correction parameter.
The method according to any one of claims 2 to 6, wherein the first battery parameter includes a state of charge SOC of the first battery, and the correction of the first battery parameter of the first battery ,include:

The SOC of the first battery is determined after a first period in which the first battery is in a resting state.
The method according to any one of claims 1 to 7, characterized in that the method further includes:

A first power replacement instruction is received, and the first power replacement instruction is used to instruct the electrical equipment to replace the first battery.
A method for battery replacement, characterized by including:

Receive a second battery parameter of the first battery, the second battery parameter being corrected from the first battery parameter;

Charging is performed based on the second battery parameters.
The method of claim 9, further comprising:

A first power replacement command is sent, where the first power replacement command is used to instruct the electrical equipment to replace the first battery.
The method according to claim 9 or 10, characterized in that, the method further includes:

Obtain the third battery parameters of the second battery, where the second battery is the battery replaced by the electrical device;

The charging based on the first battery parameter or the second battery parameter includes:

Perform billing based on the first battery parameter and the third battery parameter; or,

Charging is performed based on the second battery parameter and the third battery parameter.
The method according to claim 11, characterized in that charging according to the first battery parameter or the second battery parameter includes:

Billing is based on the following formula,

F=(SOC 2 ×E 2 ×SOH 2 -SOC 1 ×E 1 ×SOH 1 )×f 1 ;

Among them, 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, and f 1 is the unit price of the power.
The method according to any one of claims 9 to 12, characterized in that the method further includes:

Determine the number of batteries to replace;

The charging based on the first battery parameter or the second battery parameter includes:

Billing is performed based on the first battery parameter or the second battery parameter and the number of replaced batteries.
The method according to claim 13, characterized in that the charging based on the first battery parameter or the second battery parameter and the number of replacement batteries includes:

Billing is based on the following formula,

F=(SOC 2 ×E 2 ×SOH 2 -SOC 1 ×E 1 ×SOH 1 )×f 1 +f 2 ×n;

Among them, 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, and n is the number of batteries.
A battery management system, characterized by including:

A processing module, the processing module is used to correct the first battery parameters of the first battery, and the first battery is a battery replaced by the electrical equipment;

The processing module is used to send the second battery parameter of the first battery, the second battery parameter is obtained after correcting the first battery parameter, and the second battery parameter is used to perform the processing on the first battery. Billing.
The battery management system according to claim 15, characterized in that:

The processing module is used to obtain correction parameters, and the correction parameters are used to determine the usage of the first battery;

The processing module is used to obtain the second battery parameter according to the correction parameter and the correction model, and the correction model is used to determine the second battery parameter according to the historical record of the first battery parameter.
The battery management system of claim 16, wherein the first battery parameter includes a state of health (SOH) of the first battery.
The battery management system according to claim 16 or 17, wherein the correction parameter includes a first time period and/or a first cycle of the first battery between the first battery replacement command and the second battery replacement command. The number of turns, the first power replacement command is used to instruct the electrical equipment to replace the first battery, and the second power replacement command is the power replacement command when the first battery was calibrated last time.
The battery management system according to claim 18, wherein the processing module is configured to be greater than or equal to a first threshold during the first time period, and/or the first number of cycles is greater than or equal to a first threshold. In the case of two thresholds, the first battery parameter is corrected.
The battery management system according to any one of claims 16 to 19, characterized in that the processing module is used to obtain a first correction parameter, the first correction parameter is the value of the first battery after receiving the The correction parameters recorded during the first power exchange command;

The processing 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 determine the correction parameter according to the first correction parameter and the second correction parameter.
The battery management system according to any one of claims 16 to 20, wherein the processing module is configured to determine the SOC of the first battery after a first period of time. The first battery is in a resting state.
The battery management system according to any one of claims 15 to 21, characterized in that 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.
A kind of power exchange equipment, which is characterized in that it includes:

A processing module, the processing module is used to receive the second battery parameter of the first battery, the second battery parameter is obtained after correcting the first battery parameter;

The processing module is used for charging according to the second battery parameter.
The power exchange equipment according to claim 23, characterized in that the processing module is used to send a first power exchange instruction, and the first power exchange instruction is used to instruct the electrical equipment to replace the first battery.
The power exchange equipment according to claim 23 or 24, characterized in that the processing module is used to obtain the third battery parameter of the second battery, and the second battery is the battery replaced by the electric equipment;

The processing module is configured to perform billing according to the first battery parameter and the third battery parameter; or,

The processing module is configured to perform billing according to the second battery parameter and the third battery parameter.
The power exchange equipment according to claim 25, characterized in that the processing module is used to perform billing according to the following formula,

F=(SOC 2 ×E 2 ×SOH 2 -SOC 1 ×E 1 ×SOH 1 )×f 1 ;

Among them, 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, and f 1 is the unit price of the power.
The battery swapping device according to any one of claims 23 to 26, wherein the processing module is used to determine the number of batteries to replace;

The processing module is configured to perform billing based on the first battery parameter or the second battery parameter and the number of replaced batteries.
The power exchange equipment according to claim 27, characterized in that the processing module is used to perform billing according to the following formula,

F=(SOC 2 ×E 2 ×SOH 2 -SOC 1 ×E 1 ×SOH 1 )×f 1 +f 2 ×n;

Among them, 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, and n is the number of batteries.
A battery, characterized in that it includes:

A battery management system as claimed in any one of claims 15 to 22.
A power swap station is characterized by including:

The power exchange device according to any one of claims 23 to 28.
A device for battery replacement, characterized by including:

A processor and a memory, the memory stores instructions that, when executed by the processor, cause the device to perform the method as described in any one of the above claims 1 to 8, or to perform the method as described in the above claims. The method of any one of claims 9 to 14.