CN117940308A - Method and device for battery power change - Google Patents
Method and device for battery power change Download PDFInfo
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- CN117940308A CN117940308A CN202280060268.7A CN202280060268A CN117940308A CN 117940308 A CN117940308 A CN 117940308A CN 202280060268 A CN202280060268 A CN 202280060268A CN 117940308 A CN117940308 A CN 117940308A
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- 238000000034 method Methods 0.000 title claims abstract description 149
- 230000008859 change Effects 0.000 title abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 84
- 238000011084 recovery Methods 0.000 claims description 97
- 238000012545 processing Methods 0.000 claims description 64
- 230000005611 electricity Effects 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000010354 integration Effects 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
Classifications
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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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the application provides a method and a device for battery power conversion, which can directly charge according to the electric quantity of the first battery which is consumed in a net way, and can avoid charging errors caused by the change of battery parameters of the first battery in the use process, thereby realizing reasonable charging and being beneficial to improving the charging accuracy. The method for battery power conversion comprises the following steps: acquiring the discharge electric quantity of a first battery in the use process from being replaced to the electric equipment to being replaced by the electric equipment; and charging according to the discharge electric quantity.
Description
The application relates to the technical field of electric automobiles, in particular to a method and a device for battery power conversion.
With the rapid development of electric automobile technology, electric vehicles become an important component of sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection. At present, besides the battery in the electric vehicle can be charged by the charging device to ensure the continuous operation of the electric vehicle, the battery in the electric vehicle can be replaced by the power exchange station to rapidly supply energy for the electric vehicle with insufficient energy.
However, how to charge the battery accurately after replacing the battery is still a problem to be solved.
Disclosure of Invention
The application provides a method and a device for battery power conversion, which can directly charge according to the discharge electric quantity by acquiring the discharge electric quantity of a first battery in the use process, thereby being beneficial to realizing accurate charging of the first battery.
In a first aspect, a method for battery power conversion is provided, applied to a station control system, including: acquiring the discharge electric quantity of a first battery in the use process from being replaced to the electric equipment to being replaced by the electric equipment; and charging according to the discharge electric quantity.
Through obtaining the electric quantity of discharging of the first battery in the use process, the charging can be directly carried out according to the electric quantity of the net consumption of the first battery, and the charging error caused by the change of the battery parameters of the first battery in the use process can be avoided, so that reasonable charging is realized, and the charging accuracy is improved.
In some embodiments, the obtaining the discharge power of the first battery in the use process from being changed to the electric equipment to being changed from the electric equipment includes: acquiring the path discharge capacity of a first battery, wherein the path discharge capacity is the discharge capacity recorded by the first battery in the using process; and determining the discharge electric quantity according to the path discharge capacity.
The discharge electric quantity of the first battery is determined by the way discharge capacity, the electric quantity consumed by the first battery can be directly used as the discharge electric quantity for charging, the influence of the battery parameter change of the first battery on the charging accuracy can be avoided, and therefore reasonable charging can be realized, and the charging accuracy is improved.
In some embodiments, the method further comprises: acquiring the path charge capacity of the first battery, wherein the path charge capacity is the charge capacity recorded by the first battery in the using process; the determining the discharge electric quantity according to the path discharge capacity comprises the following steps: and determining the discharge electric quantity according to the path discharge capacity and the path charge capacity.
By considering the electric quantity of the charging equipment charged by the user, repeated charging of the electric quantity can be avoided, and the charging mode is more reasonable and accurate.
In some embodiments, the method further comprises: acquiring a path recovery capacity of the first battery, wherein the path recovery capacity is recorded in the using process of the first battery; the determining the discharge electric quantity according to the path discharge capacity comprises the following steps: and determining the discharge electric quantity according to the route discharge capacity and the route recovery capacity.
The electric quantity is recovered by considering the way generated by the electric equipment in the using process, so that additional charge for the electric quantity can be avoided, and the charging mode is more reasonable and accurate.
In some embodiments, the method further comprises: acquiring a path discharge capacity, a path charge capacity and a path recovery capacity of a first battery, wherein the path discharge capacity is a discharge capacity recorded by the first battery in the using process, the path charge capacity is a charge capacity recorded by the first battery in the using process, and the path recovery capacity is a recovery capacity recorded by the first battery in the using process; the method for obtaining the discharge electric quantity of the first battery in the use process from being changed to the electric equipment to being changed from the electric equipment comprises the following steps: and determining the discharge electric quantity according to the route discharge capacity, the route charge capacity and the route recovery capacity.
The situation that the first battery possibly consumes electric quantity or accumulates electric quantity in the using process is fully considered, only the part of the actually consumed electric quantity which is not charged is charged, and the additional accumulated electric quantity is not charged, so that reasonable charging is realized, and the charging accuracy is improved.
In some embodiments, the determining the discharge capacity from the trip discharge capacity, the trip charge capacity, and the trip recovery capacity comprises: the discharge capacity is calculated according to the following formula:
Wherein H is the discharge capacity, E 1 is the total capacity of the first battery, C is the path discharge capacity, D is the path charge capacity, E is the path recovery capacity, and M is the total capacity of the first battery.
The settlement electric quantity for charging is calculated by fully considering the situation that a user can charge the first battery and electric equipment can recover the electric quantity in the using process of the first battery, so that the charging process is more reasonable, and the charging accuracy is improved.
In a second aspect, there is provided a method for battery replacement, applied to a battery management system, comprising: acquiring the path discharge capacity of a first battery, wherein the path discharge capacity is recorded in the use process from the replacement of the first battery to the replacement of the electric equipment; and sending the path discharge capacity, wherein the path discharge capacity is used for determining the discharge electricity quantity of the first battery in the using process, and the discharge electricity quantity is used for charging.
In some embodiments, the method further comprises: acquiring the path charge capacity of the first battery, wherein the path charge capacity is the charge capacity recorded by the first battery in the using process; the transmitting the path discharge capacity includes: and transmitting the route discharge capacity and the route charge capacity.
In some embodiments, the method further comprises: acquiring a path recovery capacity of the first battery, wherein the path recovery capacity is recorded in the using process of the first battery; the transmitting the path discharge capacity includes: and transmitting the route discharge capacity and the route recovery capacity.
In some embodiments, the method further comprises: acquiring a path charge capacity and a path recovery capacity of the first battery, wherein the path charge capacity is the charge capacity recorded by the first battery in the using process, and the path recovery capacity is the recovery capacity recorded by the first battery in the using process; the transmitting the path discharge capacity includes: and transmitting the route discharge capacity, the route charge capacity and the route recovery capacity.
In a third aspect, a station control system is provided, comprising: the processing module is used for acquiring the discharge electric quantity of the first battery in the use process from being replaced to the electric equipment to being replaced by the electric equipment; and the processing module is used for charging according to the discharge electric quantity.
In some embodiments, the processing module is configured to obtain a path-on-discharge capacity of the first battery, the path-on-discharge capacity being a discharge capacity of the first battery recorded during the use; and the processing module is used for determining the discharge electric quantity according to the path discharge capacity.
In some embodiments, the processing module is configured to obtain a charge capacity of the first battery on the road, the charge capacity on the road being a charge capacity of the first battery recorded during the use; the processing module is used for determining the discharge electric quantity according to the path discharge capacity and the path charge capacity.
In some embodiments, the processing module is configured to obtain a recovery capacity of the first battery, the recovery capacity being a recovery capacity of the first battery recorded during the use;
The processing module is used for determining the discharge electric quantity according to the route discharge capacity and the route recovery capacity.
In some embodiments, the processing module is configured to obtain a on-path discharge capacity, an on-path charge capacity, and an on-path recovery capacity of the first battery, where the on-path discharge capacity is a discharge capacity of the first battery recorded during the use, the on-path charge capacity is a charge capacity of the first battery recorded during the use, and the on-path recovery capacity is a recovery capacity of the first battery recorded during the use; the processing module is used for determining the discharge electric quantity according to the route discharge capacity, the route charge capacity and the route recovery capacity.
In some embodiments, the processing module is configured to calculate the discharged electrical quantity according to the following formula:
Wherein H is the discharge capacity, E 1 is the total capacity of the first battery, C is the path discharge capacity, D is the path charge capacity, E is the path recovery capacity, and M is the total capacity of the first battery.
In a fourth aspect, there is provided a battery management system comprising: the processing module is used for obtaining the path discharge capacity of the first battery, wherein the path discharge capacity is recorded in the use process from the replacement of the first battery to the replacement of the electric equipment; the processing module is used for sending the path discharge capacity, the path discharge capacity is used for determining the discharge electricity quantity of the first battery in the using process, and the discharge electricity quantity is used for charging.
In some embodiments, the processing module is configured to obtain a charge capacity of the first battery on the road, the charge capacity on the road being a charge capacity of the first battery recorded during the use; the processing module is used for sending the path discharge capacity and the path charge capacity.
In some embodiments, the processing module is configured to obtain a recovery capacity of the first battery, the recovery capacity being a recovery capacity of the first battery recorded during the use; the processing module is used for sending the route discharge capacity and the route recovery capacity.
In some embodiments, the processing module is configured to obtain a on-path charge capacity and an on-path recovery capacity of the first battery, where the on-path charge capacity is a charge capacity of the first battery that is recorded during the use, and the on-path recovery capacity is a recovery capacity of the first battery that is recorded during the use; the processing module is used for sending the route discharge capacity, the route charge capacity and the route recovery capacity.
In a fifth aspect, a power exchange station is provided, comprising a station control system according to any of the embodiments of the third aspect above.
In a sixth aspect, a battery is provided, including a battery management system according to any one of the embodiments of the fourth aspect.
In a seventh aspect, there is provided an apparatus for battery replacement, comprising: a processor and a memory storing instructions that, when executed by the processor, cause the apparatus to perform the method of any one of the embodiments of the first or second aspects described above.
In an eighth aspect, a computer readable storage medium is provided, the computer readable storage medium storing a computer program, which when executed, performs the method according to any one of the embodiments of the first or second aspects.
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a power conversion scenario according to an embodiment of the present application.
Fig. 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 an apparatus for battery replacement according to an embodiment of the present application.
In the drawings, the drawings are not drawn to scale.
Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the embodiments described.
In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like are merely used for convenience in describing the present application and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.
The directional terms appearing in the following description are those directions shown in the drawings and do not limit the specific structure of the application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application can be understood as appropriate by those of ordinary skill in the art.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.
Reference in the specification 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 such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.
With the development of new energy technology, the application field of batteries is becoming wider and wider, for example, the batteries can be used as a power source to provide power for vehicles, and the use of non-renewable resources is reduced. Under the condition that the electric quantity of the battery in the vehicle is insufficient to support the vehicle to continue running, the vehicle can be charged by charging equipment such as a charging pile, namely, the battery in the vehicle is charged, so that the battery can be circularly used for charging and discharging. Alternatively, battery replacement services may be provided to the vehicle by the battery replacement station, i.e., the battery may be quickly removed from or installed on the vehicle. The battery removed from the vehicle may be placed in a battery storage mechanism of the power exchange station for charging in preparation for a subsequent power exchange for the vehicle entering the power exchange station.
After a period of use or a certain number of cycles, the performance of the battery may change, for example, the state of health (SOH) of the battery may be attenuated with the use of the battery. If the cost of a new battery is still calculated according to the SOH of the battery, inaccurate billing may result, causing losses to the user or operator. In addition, with the use of the battery, the state of charge (SOC) of the battery may also cause inaccuracy of the measurement result due to the accumulation of errors, and if charging is still performed according to the SOC directly measured by the battery, the charging inaccuracy may also be caused, thereby bringing a loss to the user or the operator.
In view of this, the embodiment of the application provides a method for battery power conversion, which can avoid charging errors caused by the change of battery parameters in the use process of a first battery by acquiring the electric quantity of the battery which is consumed in the use process and charging according to the electric quantity, thereby realizing reasonable charging and being beneficial to improving the accuracy of charging.
Fig. 1 shows a schematic diagram of an application scenario of a method for replacing a battery according to an embodiment of the present application. As shown in fig. 1, the application scenario of the method of replacing a battery may involve a battery replacement station 11, a vehicle 12, and a battery.
The power exchange station 11 may refer to a location that provides power exchange services for a vehicle. For example, the power exchange station 11 may be a stationary location, or the power exchange station 11 may be a movable location such as a mobile power exchange vehicle, without limitation.
The vehicle 12 may be removably connected with a battery. In some examples, the vehicle 12 may be a car, van, or the like, powered by a power battery.
The batteries may include a battery disposed within the vehicle 12 and a battery located in the power exchange station 11 for exchanging power. For ease of distinction, as shown in fig. 1, the battery to be replaced in the vehicle 12 is denoted as battery 141, and the battery for battery replacement in the battery replacement station is denoted as battery 142. The battery may be a lithium ion battery, a lithium metal battery, a lead-acid battery, a nickel-metal hydride battery, a lithium-sulfur battery, a lithium-air battery, a sodium ion battery, or the like, and is not limited thereto. The battery may be a battery cell, a battery module, or a battery pack on a scale, which is not limited herein. The battery may, in addition to being a power source for powering the motor of the vehicle 12, also power other electrical devices in the vehicle 12, such as an in-vehicle air conditioner, an in-vehicle player, etc.
After the vehicle 12 with the battery 141 mounted thereon is driven into the battery exchange station 11, the battery 141 is removed from the vehicle 12 by the battery exchange device by the battery exchange station 11, and the battery 142 is taken out of the battery exchange station 11, and then the battery 142 is mounted on the vehicle 12. The vehicle 12 with the battery 142 mounted thereon may then be driven off the battery exchange station 11. Through the power conversion technology, the vehicle can be rapidly supplemented with energy in a few minutes or even tens of seconds, and the user experience is improved.
As shown in fig. 1, a power exchange cabinet 13 may be provided in the power exchange station 11. The battery cabinet 13 includes a first battery management unit 131 and a charging unit 132. The battery changing cabinet 13 may be further provided with a plurality of charging bins 133, and batteries for changing the power may be placed in the charging bins 133 of the battery changing cabinet 13 of the battery changing station 11. The first battery management unit 131 may be a battery management unit provided in the battery change cabinet 13, and for example, the first battery management unit 131 may be referred to as a center battery management unit (Central Battery Management Unit, CBMU). The charging unit 132 may charge the battery in the charging bin 133. In some examples, the charging unit may include components, devices or apparatuses having a charging function, such as an AC/DC module, i.e., an AC/DC module, without limitation. The charging units 132 may be disposed in one-to-one correspondence with the charging bins 133, or one charging unit 132 may be shared by a plurality of charging bins 133, which is not limited herein.
The battery may be correspondingly provided with a second battery management unit 143. For example, the second battery management unit 143 may be referred to as a slave battery management unit (Slave Battery Management Unit, SBMU).
The vehicle 12 is further provided with a third battery management unit 121. The third battery management unit 121 may be used to manage a plurality of batteries 141 mounted on the vehicle, and for example, the third battery management unit 121 may be referred to as a main battery management unit (Main Battery Management Unit, MBMU).
In some embodiments, the SBMU may be implemented using a Battery management system (Battery MANAGEMENT SYSTEM, BMS) for the corresponding Battery; MBMU may be implemented by a control module of a battery break unit (Battery Disconnect Unit, BDU) or by a BMS of one of the batteries.
The power exchange station 11 may also be provided with management means correspondingly. The management device may be a centralized structure or a distributed structure, and is not limited thereto. The management device may be provided inside the power exchange station 11 or may be provided outside the power exchange station 11. In the case of a distributed structure of the management device, the management device may also be arranged partly inside the station 11 and partly outside the station 11. For example, as shown in fig. 1, the management device may include a station control system 151 inside the power exchange station 11 and a cloud server 152 outside the power exchange station 11, which is not limited herein. The station control system 151 may also be referred to as a battery management unit in the power exchange station 11 for managing and controlling the battery 142 in the power exchange station 11.
Alternatively, the first battery management unit 131 may communicate with other units, modules, devices, etc. through wired or wireless means. The second battery management unit 143 may communicate with other units, modules, devices, etc. through wired or wireless means. The third battery management unit 121 may communicate with other units, modules, devices, etc. through wired or wireless means. The station control system 151 may communicate with other units, modules, devices, etc. through wired or wireless means. The wired communication means includes, for example, a CAN communication bus. The wireless communication method includes various methods such as bluetooth communication, wiFi communication, zigBee communication, and the like, and is not limited thereto.
For example, the first battery management unit 131 may communicate with the second battery management unit 143 to control charging of the battery 142 within the battery compartment 133. As another example, the third battery management unit 121 may communicate with the second battery management unit 143 to centrally manage the plurality of batteries 141 on the vehicle 12. For another example, the station control system 151 may communicate with the first battery management unit 131, the second battery management unit 143, or the third battery management unit 121 to obtain information about the battery 141 on the vehicle 12 or the battery 142 in the charging bin 133. For another example, the station control system 151 may also communicate with the cloud server 152 to obtain information about the battery 141 on the vehicle 12 or the battery 142 in the charging bin 133.
After the old battery is replaced from the powered device and the new battery is replaced to the powered device, the powered device may charge for the replacement, where the powered device may be, for example, the vehicle 12 of fig. 1. The present application provides a method for battery replacement as shown in fig. 2. The method 200 shown in fig. 2 may be performed by a station control system, such as the station control system 151 of fig. 1. Alternatively, the method 200 may also be applied to a server, a battery management system, a battery exchange device, or the like, which is capable of processing parameters related to a battery. It should be understood that the apparatus for performing the method 200 is not limited by the present application, and the apparatus for processing the relevant parameters of the battery is applicable to the embodiments of the present application. The method 200 may include at least some of the following.
S210: and acquiring the discharge electric quantity of the first battery in the use process from being replaced to the electric equipment to being replaced by the electric equipment.
S220: and charging according to the discharge electric quantity.
The first battery is an old battery used in the electric equipment, the electric equipment is required to be replaced by the first battery in the power replacement process, and then the electric equipment is replaced by a new battery. After the electric equipment finishes the replacement of the battery, a station control system in the power exchange station needs to charge for the power exchange. In order to avoid inaccurate charging caused by the change of battery parameters of the first battery in the using process, when the charging is performed in the power exchanging process of the first battery, the charging can be performed by recording the actual consumed electric quantity of the first battery.
The discharged electric quantity can be regarded as the net consumed electric quantity of the first battery, and refers to the electric quantity consumed by the first battery, wherein the part of the increased electric quantity in the using process is removed, and the discharged electric quantity is the electric quantity used for charging.
In one possible embodiment, the discharge amount may be determined by the BMS of the first battery. The BMS records the consumed capacity and the increased capacity of the first battery in the using process through an ampere-hour integration method, calculates the actual discharge electricity quantity of the first battery, and sends the discharge electricity quantity to the station control system.
In another possible embodiment, the amount of discharged electricity may be determined by a station control system. The BMS records the consumed capacity and the increased capacity of the first battery in the using process through an ampere-hour integration method, the directly obtained capacities are sent to the station control system, and the station control system calculates the actual discharge electric quantity of the first battery.
In the case that the number of the replaced batteries and the number of the replaced batteries of the electric equipment are different, for example, the electric equipment replaces a first battery and replaces a plurality of second batteries, the electric quantity actually consumed by the first battery can be charged according to the method 200, and in addition, the basic cost of using the batteries by the user is determined according to the number of the replaced batteries, the number of the replaced batteries or the number difference between the first battery and the second battery. If the electric equipment is replaced by a plurality of first batteries and only replaced by a second battery, each first battery can be respectively charged, and then the basic cost of using the batteries by a user is determined according to the number of the first batteries and the number of the second batteries.
Through obtaining the electric quantity of discharging of the first battery in the use process, the charging can be directly carried out according to the electric quantity of the net consumption of the first battery, and the charging error caused by the change of the battery parameters of the first battery in the use process can be avoided, so that reasonable charging is realized, and the charging accuracy is improved.
According to some embodiments of the application, optionally, step S210 may include: the station control system obtains the path discharge capacity of the first battery, wherein the path discharge capacity is the discharge capacity recorded by the first battery in the use process; and the station control system determines the discharge electric quantity according to the road discharge capacity.
The road discharge capacity refers to the recorded discharge capacity of electric equipment when discharge current passes through a first battery in the process of using the first battery. For example, the discharge capacity of the first battery during discharge may be recorded by the BMS using an ampere-hour integration method. The ampere-hour integration method is a method of integrating a current over a certain period of time to calculate the capacity consumed or accumulated by the battery over the period of time. In the embodiment of the application, the discharge current passing through the first battery is integrated within the discharge time range of the first battery, so that the path discharge capacity of the first battery can be obtained.
In the use process of the first battery, only the on-road discharge capacity may be involved, and the on-road discharge capacity may be converted into on-road discharge electric quantity to be used as the discharge electric quantity for charging.
In one possible embodiment, when the station control system acquires the path discharge capacity of the first battery, step S301 may be performed to receive the path discharge capacity from the BMS of the first battery.
The discharge electric quantity of the first battery is determined by the way discharge capacity, the electric quantity consumed by the first battery can be directly used as the discharge electric quantity for charging, the influence of the battery parameter change of the first battery on the charging accuracy can be avoided, and therefore reasonable charging can be realized, and the charging accuracy is improved.
According to some embodiments of the application, the method 200 optionally further comprises: the station control system acquires the path charge capacity of the first battery, wherein the path charge capacity is the charge capacity recorded in the using process of the first battery. And the station control system determines the discharge electric quantity according to the path discharge capacity and the path charge capacity.
It is considered that the user may charge the first battery with the charging device, for example, with the charging post during use of the first battery. For the sake of the rationality of the charging, the amount of electricity that the user charges himself should not be counted in the charging of the battery replacement process, so that it is possible to consider subtracting the portion that the user has charged the first battery when charging the battery replacement process.
In one possible embodiment, the on-path charge capacity of the first battery may also be recorded by the BMS using an ampere-hour integration method, i.e., integrating the charge current over the time period of charging to calculate the capacity of the battery accumulated over the charging time period.
When the charging process is carried out, the path discharge capacity can be subtracted from the path charge capacity and converted into electric quantity, namely the discharge electric quantity for charging.
In one possible embodiment, when the station control system acquires the on-way charge capacity of the first battery, step S302 may be performed to receive the on-way charge capacity from the BMS of the first battery.
By considering the electric quantity of the charging equipment charged by the user, repeated charging of the electric quantity can be avoided, and the charging mode is more reasonable and accurate.
According to some embodiments of the application, the method 200 optionally further comprises: the station control system acquires the path recovery capacity of the first battery, wherein the path recovery capacity is recorded in the using process of the first battery. And the station control system determines the discharge electric quantity according to the route discharge capacity and the route recovery capacity.
In some possible cases, the electric equipment may generate certain energy recovery in the process of using the first battery, for example, in the case that the electric equipment is an electric automobile, the electric automobile can generate electricity through motor braking when decelerating, and the electric quantity is recovered to the first battery. Then, when charging the battery replacement process of the first battery, consideration needs to be given to excluding the recovered electric quantity from the electric quantity used for charging.
Specifically, the capacity of the first battery recovered by the way may also be recorded by the BMS using an ampere-hour integration method, that is, the BMS integrates the current during the period of time to calculate the capacity of the battery accumulated when the current having the recovered power passes through the first battery.
When the charging process is carried out, the path discharge capacity can be subtracted from the path recovery capacity and converted into electric quantity, namely the discharge electric quantity for charging.
In one possible embodiment, when the station control system acquires the route recovery capacity of the first battery, step S303 may be performed to receive the route recovery capacity from the BMS of the first battery.
The electric quantity is recovered by considering the way generated by the electric equipment in the using process, so that additional charge for the electric quantity can be avoided, and the charging mode is more reasonable and accurate.
According to some embodiments of the application, the method 200 optionally further comprises: the station control system obtains the path discharge capacity, the path charge capacity and the path recovery capacity of the first battery, wherein the path discharge capacity is the discharge capacity of the first battery recorded in the use process, the path charge capacity is the charge capacity of the first battery recorded in the use process, and the path recovery capacity is the recovery capacity of the first battery recorded in the use process. Wherein step S220 may include: and determining the discharge electric quantity according to the route discharge capacity, the route charge capacity and the route recovery capacity.
In the use process of the first battery, if the user charges the first battery and the electric equipment generates capacity recovery at the same time, the electric quantity generated in the two conditions needs to be excluded when the charging process of the first battery is carried out.
As shown in fig. 3, the station control system may execute step S304 to perform charging according to the received related parameters, and in the case that the battery parameters related to charging are converted into electric quantities, the electric quantity discharged on the way minus the electric quantity charged on the way and the electric quantity recovered on the way is the actual electric quantity discharged by the first battery in the use process, and the electric quantity discharged is the electric quantity discharged by the present power conversion process for charging.
The situation that the first battery possibly consumes electric quantity or accumulates electric quantity in the using process is fully considered, only the part of the actually consumed electric quantity which is not charged is charged, and the additional accumulated electric quantity is not charged, so that reasonable charging is realized, and the charging accuracy is improved.
According to some embodiments of the application, optionally, the discharge capacity is calculated according to the following equation (1).
Wherein H is the discharge capacity, E 1 is the total capacity of the first battery, C is the path discharge capacity, D is the path charge capacity, E is the path recovery capacity, and M is the total capacity of the first battery.
The discharging electric quantity is the electric quantity of the battery for charging, for example, the discharging electric quantity and the unit price of the electric quantity can be multiplied to obtain a charging result. The formula (1) considers that the use process of the first battery includes the situation that the user charges the first battery and the electric equipment has the recovered electric quantity, and the corresponding parameter can be 0 under the situation that the user does not charge the first battery or the electric equipment does not have the recovered electric quantity.
The settlement electric quantity for charging is calculated by fully considering the situation that a user can charge the first battery and electric equipment can recover the electric quantity in the using process of the first battery, so that the charging process is more reasonable, and the charging accuracy is improved.
The present application also provides a method 400 for battery replacement, as shown in fig. 4, which may be applied to a battery management system, which may be, for example, a BMS of a first battery, i.e., the battery management system is always followed by a battery; it is also possible that the BMS connected to the first battery through the external interface, i.e. the first battery is only connected when the measurement of the relevant parameters of the battery is required. Alternatively, the method 400 may also be applied to a server, a battery-changing device, or the like, which is capable of processing parameters related to the battery. It should be understood that the apparatus for performing the method 400 is not limited in this disclosure, and the apparatus for processing the relevant parameters of the battery is applicable to the embodiments of the present disclosure. The embodiment of the present application will be described by taking a BMS applied to a first battery as an example, and the method 400 may include at least some of the following.
S410: and obtaining the path discharge capacity of the first battery, wherein the path discharge capacity is the recorded discharge capacity of the first battery in the use process from the replacement of the first battery to the replacement of the electric equipment to the replacement of the first battery from the electric equipment.
S420: and transmitting the road discharge capacity, wherein the road discharge capacity is used for determining the discharge electric quantity of the first battery in the use process, and the discharge electric quantity is used for charging.
According to some embodiments of the application, optionally, a path charge capacity of the first battery is obtained, where the path charge capacity is a charge capacity of the first battery recorded during use; and transmitting the path discharge capacity and the path charge capacity.
According to some embodiments of the application, optionally, the method 400 further comprises: acquiring the path recovery capacity of the first battery, wherein the path recovery capacity is recorded in the using process of the first battery; the transmission path discharge capacity and the path recovery capacity.
According to some embodiments of the application, optionally, a route charge capacity and a route recovery capacity of the first battery are obtained, the route charge capacity being a charge capacity of the first battery recorded during the use, the route recovery capacity being a recovery capacity of the first battery recorded during the use; transmitting the route discharge capacity, the route charge capacity, and the route recovery capacity
The application also provides a station control system which comprises a processing module, wherein the processing module can be a processor in the station control system. The processing module is used for acquiring the discharge electric quantity of the first battery in the use process from the replacement of the first battery to the replacement of the electric equipment to the replacement of the first battery from the electric equipment; the processing module is used for charging according to the discharge electric quantity.
According to some embodiments of the application, optionally, the processing module is configured to obtain a path discharge capacity of the first battery, where the path discharge capacity is a discharge capacity recorded by the first battery during use; the processing module is used for determining the discharge electric quantity according to the road discharge capacity.
According to some embodiments of the present application, optionally, the processing module is configured to obtain a path charging capacity of the first battery, where the path charging capacity is a charging capacity of the first battery recorded during use; the processing module is used for determining the discharge electric quantity according to the road discharge capacity and the road charge capacity.
According to some embodiments of the application, optionally, the processing module is configured to obtain a recovery capacity of the first battery, where the recovery capacity of the first battery is recorded during use; the processing module is used for determining the discharge electric quantity according to the route discharge capacity and the route recovery capacity.
According to some embodiments of the present application, optionally, the processing module is configured to obtain a trip discharge capacity, a trip charge capacity, and a trip recovery capacity of the first battery, where the trip discharge capacity is a discharge capacity of the first battery recorded during use, the trip charge capacity is a charge capacity of the first battery recorded during use, and the trip recovery capacity is a recovery capacity of the first battery recorded during use; the processing module is used for determining the discharge electric quantity according to the route discharge capacity, the route charge capacity and the route recovery capacity.
According to some embodiments of the application, optionally, the processing module is configured to calculate the discharge amount according to the following formula (1).
Wherein H is the discharge capacity, E 1 is the total capacity of the first battery, C is the path discharge capacity, D is the path charge capacity, E is the path recovery capacity, and M is the total capacity of the first battery.
The application also provides a battery management system comprising a processing module, which may be a processor in the battery management system. The processing module is used for acquiring the path discharge capacity of the first battery, wherein the path discharge capacity is recorded in the use process from the replacement of the first battery to the replacement of the electric equipment; the processing module is used for sending the road discharge capacity, the road discharge capacity is used for determining the discharge electric quantity of the first battery in the use process, and the discharge electric quantity is used for charging.
According to some embodiments of the present application, optionally, the processing module is configured to obtain a path charging capacity of the first battery, where the path charging capacity is a charging capacity of the first battery recorded during use; the processing module is used for sending the route discharge capacity and the route charge capacity.
According to some embodiments of the application, optionally, the processing module is configured to obtain a recovery capacity of the first battery, where the recovery capacity of the first battery is recorded during use; the processing module is used for sending the route discharge capacity and the route recovery capacity.
According to some embodiments of the present application, optionally, the processing module is configured to obtain a path charging capacity and a path recycling capacity of the first battery, where the path charging capacity is a charging capacity recorded during use of the first battery, and the path recycling capacity is a recycling capacity recorded during use of the first battery; the processing module is used for sending the route discharge capacity, the route charge capacity and the route recovery capacity.
The application also provides a power exchange station, which comprises the station control system in any embodiment.
The application also provides a battery, which comprises the battery management system in any embodiment.
The present application also provides an apparatus 500 for battery power conversion, as shown in fig. 5, comprising a processor 501 and a memory 502, the memory 502 storing instructions which, when executed by the processor 501, cause the apparatus 500 to perform a method as described in any of the embodiments above.
The application also provides a computer readable storage medium storing a computer program which, when executed, performs a method as in any of the embodiments described above.
While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (23)
- A method for battery replacement, comprising:Acquiring the discharge electric quantity of a first battery in the use process from being replaced to the electric equipment to being replaced by the electric equipment;and charging according to the discharge electric quantity.
- The method of claim 1, wherein the obtaining the discharged power of the first battery during the use from being changed to the powered device to being changed from the powered device comprises:Acquiring the path discharge capacity of a first battery, wherein the path discharge capacity is the discharge capacity recorded by the first battery in the using process;and determining the discharge electric quantity according to the path discharge capacity.
- The method according to claim 2, wherein the method further comprises:acquiring the path charge capacity of the first battery, wherein the path charge capacity is the charge capacity recorded by the first battery in the using process;the determining the discharge electric quantity according to the path discharge capacity comprises the following steps:And determining the discharge electric quantity according to the path discharge capacity and the path charge capacity.
- A method according to claim 2 or 3, characterized in that the method further comprises:Acquiring a path recovery capacity of the first battery, wherein the path recovery capacity is recorded in the using process of the first battery;the determining the discharge electric quantity according to the path discharge capacity comprises the following steps:And determining the discharge electric quantity according to the route discharge capacity and the route recovery capacity.
- The method according to any one of claims 1 to 4, further comprising:Acquiring a path discharge capacity, a path charge capacity and a path recovery capacity of a first battery, wherein the path discharge capacity is a discharge capacity recorded by the first battery in the using process, the path charge capacity is a charge capacity recorded by the first battery in the using process, and the path recovery capacity is a recovery capacity recorded by the first battery in the using process;the method for obtaining the discharge electric quantity of the first battery in the use process from being changed to the electric equipment to being changed from the electric equipment comprises the following steps:And determining the discharge electric quantity according to the route discharge capacity, the route charge capacity and the route recovery capacity.
- The method of claim 5, wherein the determining the discharge capacity from the trip discharge capacity, the trip charge capacity, and the trip recovery capacity comprises:The discharge capacity is calculated according to the following formula,Wherein H is the discharge capacity, E 1 is the total capacity of the first battery, C is the path discharge capacity, D is the path charge capacity, E is the path recovery capacity, and M is the total capacity of the first battery.
- A method for battery replacement, comprising:Acquiring the path discharge capacity of a first battery, wherein the path discharge capacity is recorded in the use process from the replacement of the first battery to the replacement of the electric equipment;And sending the path discharge capacity, wherein the path discharge capacity is used for determining the discharge electricity quantity of the first battery in the using process, and the discharge electricity quantity is used for charging.
- The method of claim 7, wherein the method further comprises:acquiring the path charge capacity of the first battery, wherein the path charge capacity is the charge capacity recorded by the first battery in the using process;The transmitting the path discharge capacity includes:And transmitting the route discharge capacity and the route charge capacity.
- The method according to claim 7 or 8, characterized in that the method further comprises:Acquiring a path recovery capacity of the first battery, wherein the path recovery capacity is recorded in the using process of the first battery;The transmitting the path discharge capacity includes:And transmitting the route discharge capacity and the route recovery capacity.
- The method according to any one of claims 7 to 9, further comprising:Acquiring a path charge capacity and a path recovery capacity of the first battery, wherein the path charge capacity is the charge capacity recorded by the first battery in the using process, and the path recovery capacity is the recovery capacity recorded by the first battery in the using process;The transmitting the path discharge capacity includes:and transmitting the route discharge capacity, the route charge capacity and the route recovery capacity.
- A station control system, comprising:The processing module is used for acquiring the discharge electric quantity of the first battery in the use process from being replaced to the electric equipment to being replaced by the electric equipment;And the processing module is used for charging according to the discharge electric quantity.
- The station control system of claim 11, wherein the processing module is configured to obtain a path discharge capacity of a first battery, the path discharge capacity being a discharge capacity of the first battery recorded during the use;and the processing module is used for determining the discharge electric quantity according to the path discharge capacity.
- The station control system of claim 12, wherein the processing module is configured to obtain a path charge capacity of the first battery, the path charge capacity being a charge capacity of the first battery that is recorded during the use;The processing module is used for determining the discharge electric quantity according to the path discharge capacity and the path charge capacity.
- The station control system of claim 12 or 13, wherein the processing module is configured to obtain a recovery capacity of the first battery, the recovery capacity being a recovery capacity of the first battery recorded during the use;The processing module is used for determining the discharge electric quantity according to the route discharge capacity and the route recovery capacity.
- The station control system of any one of claims 11 to 14, wherein the processing module is configured to obtain a on-road discharge capacity of a first battery, a on-road charge capacity, and a on-road recovery capacity, the on-road discharge capacity being a discharge capacity of the first battery recorded during the use, the on-road charge capacity being a charge capacity of the first battery recorded during the use, the on-road recovery capacity being a recovery capacity of the first battery recorded during the use;The processing module is used for determining the discharge electric quantity according to the route discharge capacity, the route charge capacity and the route recovery capacity.
- The station control system of claim 15, wherein the processing module is configured to calculate the discharge power according to the following equation,Wherein H is the discharge capacity, E 1 is the total capacity of the first battery, C is the path discharge capacity, D is the path charge capacity, E is the path recovery capacity, and M is the total capacity of the first battery.
- A battery management system, comprising:The processing module is used for obtaining the path discharge capacity of the first battery, wherein the path discharge capacity is recorded in the use process from the replacement of the first battery to the replacement of the electric equipment;The processing module is used for sending the path discharge capacity, the path discharge capacity is used for determining the discharge electricity quantity of the first battery in the using process, and the discharge electricity quantity is used for charging.
- The battery management system of claim 17, wherein the processing module is configured to obtain a charge-on-path capacity of the first battery, the charge-on-path capacity being a charge capacity of the first battery that is recorded during the use;The processing module is used for sending the path discharge capacity and the path charge capacity.
- The battery management system of claim 17 or 18, wherein the processing module is configured to obtain a recovery capacity of the first battery, the recovery capacity being a recovery capacity of the first battery recorded during the use;The processing module is used for sending the route discharge capacity and the route recovery capacity.
- The battery management system according to any one of claims 17 to 19, wherein the processing module is configured to acquire a on-road charge capacity of the first battery, which is a charge capacity of the first battery recorded during the use, and an on-road recovery capacity, which is a recovery capacity of the first battery recorded during the use;The processing module is used for sending the route discharge capacity, the route charge capacity and the route recovery capacity.
- A power exchange station, comprising:A station control system as claimed in any one of claims 11 to 16.
- A battery, comprising:the battery management system of any one of claims 17 to 20.
- An apparatus for battery replacement, comprising:A processor and a memory storing instructions that, when executed by the processor, cause the apparatus to perform the method of any one of the preceding claims 1 to 6 or to perform the method of any one of the preceding claims 7 to 10.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2022/104213 WO2024007218A1 (en) | 2022-07-06 | 2022-07-06 | Method and apparatus for battery swapping |
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| CN117940308A true CN117940308A (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202280060268.7A Pending CN117940308A (en) | 2022-07-06 | 2022-07-06 | Method and device for battery power change |
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| CN (1) | CN117940308A (en) |
| WO (1) | WO2024007218A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1734827B (en) * | 2005-07-18 | 2012-05-23 | 刘培生 | Network type replacing method for battery of electric vehicle and apparatus therefor |
| CN102582458B (en) * | 2011-12-15 | 2013-12-11 | 江西省电力公司电动汽车服务分公司 | Electric vehicle information acquisition system and charging billing system for electric vehicle |
| CN103269107B (en) * | 2013-05-31 | 2015-04-15 | 国家电网公司 | Electromobile power charging-exchange station power charging-exchange control method with optimized economic benefits |
| CN106780786B (en) * | 2017-01-23 | 2018-04-13 | 孔文欣 | The control method and system of the battery capacity charging of electric automobile |
| CN111762053B (en) * | 2020-03-18 | 2023-10-27 | 杭州协能科技股份有限公司 | Control method and control system for battery power-changing charging |
| CN112185007B (en) * | 2020-09-07 | 2023-04-28 | 杭州协能科技股份有限公司 | Battery charging control method and control system |
-
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- 2022-07-06 CN CN202280060268.7A patent/CN117940308A/en active Pending
- 2022-07-06 WO PCT/CN2022/104213 patent/WO2024007218A1/en active Application Filing
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