CN117941204A

CN117941204A - Method and device for charging battery

Info

Publication number: CN117941204A
Application number: CN202280057957.2A
Authority: CN
Inventors: 陈伟峰; 何乐为; 王霞
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2024-04-26
Also published as: WO2024000107A1

Abstract

The embodiment of the application provides a battery charging method and a battery charging device. The charging method is applied to the power exchange station and comprises the following steps: charging the battery in the battery exchange station according to a first threshold value in case the electricity price is in a peak period, or charging the battery in the battery exchange station according to a second threshold value in case the electricity price is in a trough period; wherein the first threshold is less than the second threshold. The charging method and the charging device provided by the embodiment of the application are beneficial to reducing the charging cost of the power exchange station, thereby reducing the operation cost of the power exchange station.

Description

Method and device for charging battery

Technical Field

The embodiment of the application relates to the technical field of batteries, in particular to a battery charging method and a battery charging device.

Background

With the development of new energy technology, the application field of the battery is more and more wide, such as providing power for the electric device or supplying power for the electric device.

Under the condition that the electric quantity of the battery in the electric device is insufficient to support the operation of the electric device, the electric device can be charged by the charging device, namely the battery in the electric device is charged, so that the charge and discharge cycle of the battery is realized. However, the battery requires a long time to charge, and the power utilization device cannot operate during the charging, which brings great inconvenience to the user.

To enhance the user experience, power conversion techniques have evolved. The power utilization device can replace a battery with insufficient electric quantity into a battery with sufficient electric quantity in the power exchange station, the battery with insufficient electric quantity can be charged in the power exchange station, and the charged battery can be used as a battery for replacing the power utilization device which enters the power exchange station for power exchange subsequently.

How to reduce the charging cost of the battery in the power exchange station is a problem to be solved urgently.

Disclosure of Invention

In view of the above, the embodiments of the present application provide a method and a device for charging a battery, which are beneficial to reducing the charging cost of a power exchange station, thereby reducing the operation cost of the power exchange station.

In a first aspect, a method for charging a battery is provided, which is applied to a power exchange station, and includes: charging the battery in the battery exchange station according to a first threshold value in case the electricity price is in a peak period, or charging the battery in the battery exchange station according to a second threshold value in case the electricity price is in a trough period; wherein the first threshold is less than the second threshold.

In this embodiment, in the case that the electricity price is in the peak period, the battery in the electricity exchange station can be charged according to the smaller threshold value, which is beneficial to enabling the electricity exchange station to quickly reach the available state of the electricity exchange station at the minimum cost, and in the case that the electricity price is in the trough period, the battery in the electricity exchange station can be charged according to the larger threshold value, which is beneficial to enabling the electricity exchange station to reach the maximum profit state of the electricity exchange station at the minimum cost, i.e. the charging method 20 provided by the embodiment of the application is beneficial to saving the operation cost of the electricity exchange station.

In one possible implementation, the charging the battery in the power exchange station according to the first threshold value in the case that the electricity price is in the peak period comprises: and charging the battery with the state of charge (SOC) smaller than the first threshold value in the power exchange station to the first threshold value under the condition that the electricity price is in the peak period.

In this embodiment, when the electricity price is in the peak period, the battery with the SOC in the battery station being smaller than the first threshold is charged to the first threshold, which is a smaller threshold, thereby facilitating the battery station to quickly reach the usable state of the battery station at minimum cost.

In one possible implementation, the charging the battery having the state of charge SOC in the battery exchange station smaller than the first threshold to the first threshold in the case that the electricity price is in the peak period includes: determining a battery to be charged in the power exchange station according to the total number A of batteries in the power exchange station and the minimum operating battery number B required by the power exchange station when the electricity price is in a peak period, wherein the SOC of the battery to be charged is smaller than the first threshold value; and charging the battery to be charged to the first threshold value.

In this embodiment, in case the electricity price is in peak period, the battery to be charged in the battery exchange station is determined in combination with the total number of batteries a in the current battery exchange station and the minimum number of operated batteries B required by the battery exchange station, thereby facilitating enabling the battery exchange station to reach the minimum number of operated batteries required as much as possible at lower cost, ensuring a dynamic balance between operating requirements and operating costs.

In one possible implementation, the determining the battery to be charged in the battery exchange station according to the total number of batteries a in the battery exchange station and the minimum number of batteries B required for the battery exchange station currently comprises: and under the condition that A is equal to B, determining all batteries with SOC smaller than the first threshold value in the power exchange station as the batteries to be charged.

In this embodiment, if the total number of batteries a in the current battery exchange station is equal to the minimum number of batteries B operated by the battery exchange station when the electricity price is in the peak period, all the batteries with SOC smaller than the first threshold in the battery exchange station are charged to the first threshold, so that the battery exchange station can reach the minimum number of batteries operated by the battery exchange station as much as possible at lower cost, and dynamic balance between operation requirements and operation cost is ensured.

In one possible implementation, the determining the battery to be charged in the battery exchange station according to the total number of batteries a in the battery exchange station and the minimum operational battery number B required by the battery exchange station currently includes: in the case where a is greater than B, the battery to be charged is determined in the battery exchange station based on the number of batteries C in which the SOC in the battery exchange station is greater than or equal to the first threshold value and the minimum number of operated batteries B required for the battery exchange station.

In this embodiment, in case the total number of batteries a in the current battery exchange station is larger than the minimum number of operated batteries B required by the battery exchange station, the determination of the battery to be charged in the battery exchange station is further based on the magnitude relation of the number of batteries C in the battery exchange station having a SOC larger than or equal to the first threshold value and the minimum number of operated batteries B required by the battery exchange station, which is advantageous for the battery exchange station to reach the available state of the battery exchange station at the fastest speed.

In a possible implementation manner, the determining the battery to be charged in the battery exchange station according to the number of batteries C in which the SOC in the battery exchange station is greater than or equal to the first threshold value and the minimum operational number of batteries B required by the battery exchange station in the case where a is greater than B includes: and when A is larger than B and C is smaller than B, determining the battery to be charged in the power exchange station according to the absolute value of the difference value between the SOCs of the batteries in the power exchange station with SOCs smaller than a first threshold value and the first threshold value, wherein the batteries are batteries with SOCs smaller than the first threshold value.

In this embodiment, in the case where a is greater than B and C is less than B, the battery to be charged may be further determined based on the absolute value of the difference between the SOC of the plurality of batteries in the battery exchange station having the SOC less than the first threshold value and the first threshold value, which is more advantageous for enabling the battery exchange station to reach the available state of the battery exchange station at the fastest speed.

In one possible implementation, the determining the battery to be charged in the battery exchange station according to an absolute value of a difference between SOCs of a plurality of batteries in the battery exchange station having SOCs smaller than a first threshold and the first threshold in a case where a is larger than B and C is smaller than B includes: in the case where a is greater than B and C is less than B, the (B-C) batteries having the smallest absolute value are determined as the batteries to be charged.

In this embodiment, in the case where a is greater than B and C is less than B, determining the (B-C) cells having the smallest absolute values as the cells to be charged may cause the battery to reach the usable state of the battery to be charged at the fastest speed.

In one possible implementation, the charging the battery in the power exchange station according to the second threshold value in the case that the electricity price is in the trough period includes: and in the case that the electricity price is in the trough period, charging all batteries with the charge state SOC smaller than the second threshold value in the power exchange station to the second threshold value.

The electricity price is in the trough period, which means that the electricity price is cheaper and the charging cost is lower. At this time, without excessive judgment, all batteries with SOC smaller than the second threshold value in the power exchange station are directly charged to the second threshold value, so that all batteries in the power exchange station can reach the optimal condition of power exchange under the condition of reducing the operation cost of the power exchange station as much as possible, and better service can be provided for users.

In one possible implementation, the first threshold is a minimum SOC that allows for battery replacement and the second threshold is a maximum SOC that the battery can charge.

In this embodiment, by setting the first threshold to a minimum SOC that allows battery replacement and setting the second threshold to a maximum SOC that the battery can charge, dynamic balance between operating requirements and protecting battery conditions can be ensured.

In one possible implementation, the charging method further includes: and determining the charging power of each battery to be charged in all the batteries to be charged according to the maximum input power of the power exchange station under the condition that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station.

In this embodiment, when the maximum input power of the battery exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the battery exchange station, the charging power of each battery to be charged in all the batteries to be charged is determined according to the maximum input power of the battery exchange station, so that the charging work of the battery exchange station can be safely and normally operated.

In one possible implementation manner, in a case where the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station, determining the charging power of each of the batteries to be charged in the power exchange station according to the maximum input power of the power exchange station includes: and determining the ratio of the maximum input power of the power exchange station to the number of all the batteries to be charged as the charging power of each battery to be charged under the condition that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station.

In this embodiment, in the case where the maximum input power of the battery exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the battery exchange station, the charging power is equally distributed to all the batteries to be charged in the battery exchange station, so that the complexity of the charging control can be reduced.

In a second aspect, there is provided a charging device for a battery, for use in a power exchange station, the charging device comprising: a control unit for charging the battery in the battery exchange station according to a first threshold value in case the electricity price is in a peak period, or according to a second threshold value in case the electricity price is in a trough period; wherein the first threshold is less than the second threshold.

In one possible implementation, the control unit is specifically configured to: and charging the battery with the state of charge (SOC) smaller than the first threshold value in the power exchange station to the first threshold value under the condition that the electricity price is in the peak period.

In one possible implementation, the control unit includes: a determining subunit, configured to determine, in the power exchange station, a battery to be charged according to a total number a of batteries in the current power exchange station and a minimum operated battery number B required by the power exchange station, where the SOC of the battery to be charged is smaller than the first threshold value; and the charging subunit is used for charging the battery to be charged to the first threshold value.

In one possible implementation, the determining subunit is specifically configured to: and under the condition that A is equal to B, determining all batteries with SOC smaller than the first threshold value in the power exchange station as the batteries to be charged.

In one possible implementation, the determining subunit is specifically configured to: in case a is greater than B, the battery to be charged is determined in the battery exchange station based on the number of batteries C in the battery exchange station having an SOC greater than the first threshold value and the minimum number of operated batteries B required for the battery exchange station.

In one possible implementation, the determining subunit is specifically configured to: and when A is larger than B and C is smaller than B, determining the battery to be charged in the power exchange station according to the absolute value of the difference value between the SOCs of the batteries in the power exchange station with SOCs smaller than a first threshold value and the first threshold value, wherein the batteries are batteries with SOCs smaller than the first threshold value.

In one possible implementation, the determination subunit has means for: in the case where a is greater than B and C is less than B by a difference greater than or equal to 1, the (B-C) cells having the smallest absolute value are determined as the cells to be charged.

In one possible implementation, the control unit is specifically configured to: and in the case that the electricity price is in the trough period, charging all batteries with the charge state SOC smaller than the second threshold value in the power exchange station to the second threshold value.

In one possible implementation, the charging device further includes: and determining the charging power of each battery to be charged in all the batteries to be charged according to the maximum input power of the power exchange station under the condition that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station.

In one possible implementation manner, in a case where the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of the to-be-charged batteries in the power exchange station, charging the to-be-charged batteries in the power exchange station within the maximum input power of the power exchange station includes: and determining the ratio of the maximum input power of the power exchange station to the number of all the batteries to be charged as the charging power of each battery to be charged under the condition that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station.

In a third aspect, a charging device for a battery is provided, the charging device comprising a memory for storing instructions and a processor for reading the instructions and performing the method as in any one of the possible implementations of the first aspect and its first aspect according to the instructions.

In a fourth aspect, there is provided a chip comprising a processor for invoking and running a computer program from memory, such that a device on which the chip is mounted performs the method of the first aspect and any possible implementation of the first aspect.

In a fifth aspect, a computer program is provided, characterized in that the computer program causes a computer to perform the method of the first aspect and any one of the possible implementations of the first aspect.

In a sixth aspect, a computer readable storage medium is provided, which is configured to store a computer program, where the computer program causes a computer to perform the method according to the first aspect and any possible implementation manner of the first aspect.

In a seventh aspect, a computer program product is provided, characterized in that it comprises computer program instructions for causing a computer to perform the method of the first aspect and any one of the possible implementations of the first aspect.

Drawings

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 shows a schematic diagram of a power exchange station to which an embodiment of the application is applied.

Fig. 2 is a schematic block diagram of a method of charging a battery according to an embodiment of the present application.

Fig. 3 is another schematic block diagram of a method of charging a battery according to an embodiment of the present application.

Fig. 4 is a schematic block diagram of a charging device of a battery according to an embodiment of the present application.

Fig. 5 is another schematic block diagram of a charging device of a battery according to an embodiment of the present application.

Fig. 6 is a further schematic block diagram of a charging device of a battery according to an embodiment of the present application.

Detailed Description

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.

With the development of new energy technology, the application field of the battery is more and more wide, such as providing power for the electric device or supplying power for the electric device. For example, the battery can be used as a power source to provide power for the vehicle, and under the condition that the electric quantity of the battery in the vehicle is insufficient to support the vehicle to continue running, the charging equipment such as a charging pile can be used for charging the vehicle, namely, the battery in the vehicle is charged, so that the battery can be circularly used for charging and discharging. However, the battery charging takes a long time, which limits the cruising use of the vehicle.

In order to improve the endurance utilization rate of the vehicle, a power conversion technology is generated. The battery replacement technology adopts a mode of 'vehicle-electricity separation', and can provide battery replacement service for the vehicle through a battery replacement station, namely, the battery can be quickly taken down or installed from the vehicle. The battery taken down from the vehicle can be put into a battery-changing cabinet of the battery-changing station for charging so as to be ready for battery-changing for the vehicle entering the battery-changing station subsequently.

Charging strategies are currently employed for batteries that enter the battery exchange station to charge the battery once it has entered the station until the charge is full. The operation cost of the current charging strategy and the power exchange station is higher.

In view of this, the embodiment of the application provides a battery charging method, which uses different thresholds to charge the battery in the power exchange station by using different time periods of the peak and the trough of the electricity price, thereby being beneficial to saving the operation cost of the power exchange station.

Fig. 1 shows a schematic diagram of an application scenario of a battery charging method according to an embodiment of the present application. As shown in fig. 1, an application scenario of the battery charging method may relate to a battery exchange station 11, an electric device 12, and a battery.

The power exchange station 11 may refer to a location that provides power exchange services for a powered device. For example, the power exchange station 11 may be a stationary location, or the power exchange station 11 may be a mobile location such as a mobile power exchange device, without limitation.

The power utilization device 12 may be detachably connected to the battery. In some examples, the powered device 12 may be a car, van, or the like powered by a power battery. In other examples, the powered device 12 may be as small as a robot, as large as a ship and airplane, etc. powered or supplied with power from a battery. The type of the power consumption device 12 is not limited by the embodiment of the present application.

The batteries may include batteries disposed within the power utility 12 and batteries 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 power utilization device 12 is denoted as battery 141, and the battery for power replacement in the power exchange 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 be used as a power source to power a motor of the power consumption device 12, and may also be used to power other electrical devices in the power consumption device 12, for example, the battery may be used to power an in-vehicle air conditioner, an in-vehicle player, and the like.

After the electricity utilization device 12 having the battery 141 mounted thereon is driven into the electricity conversion station 11, the electricity conversion station 11 removes the battery 141 from the electricity utilization device 12 by the electricity conversion device, and removes the battery 142 from the electricity conversion station 11, and then mounts the battery 142 to the electricity utilization device 12. The powered device 12 with the battery 142 mounted thereon may then be driven off the power exchange station 11. Through the power conversion technology, the power utilization device can be rapidly supplemented with energy within 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 changing cabinet 13 may be provided with a charging unit 132 and a plurality of charging bins 133, and the battery for changing electricity may be placed in the charging bins 133 of the battery changing cabinet 13 of the battery changing station 11. 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 electricity consumption device 12 may be provided with at least one battery 141, and when the electricity consumption device 12 is provided with a plurality of batteries 141, the battery 141 or batteries 141 in the electricity consumption device 12 may be replaced with the battery 142 in the battery replacement station 11 according to the user's selection.

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.

Alternatively, the electricity usage device 12 may interact in communication with management devices within the electricity substation 11 such that the electricity usage device 12 completes a power change within the electricity substation 11. The management device in the battery exchange station 11 can also perform communication interaction with the battery exchange cabinet to control the battery in the battery exchange cabinet to charge.

Alternatively, the communication interactions between the various modules may include wired or wireless communication means, including, 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.

Fig. 2 shows a schematic block diagram of a method 20 of charging a battery according to an embodiment of the present application. It should be appreciated that the battery in charging method 200 may be battery station 11 of fig. 1 and the battery in charging method 200 may be battery 142 of fig. 1 placed in charging bin 133. The charging method 20 may be performed by a management device in the power exchange station 11, or may be performed by the power exchange cabinet 13 within the power exchange station 11, and for ease of understanding, the technical solution of the present application will be described below taking the management device disposed within the power exchange station 11 as an execution subject. As shown in fig. 2, the charging method 20 may include some or all of the following.

And S21, when the electricity price is in a peak period, the management device charges the battery in the power exchange station according to a first threshold value, or when the electricity price is in a trough period, the management device charges the battery in the power exchange station according to a second threshold value, wherein the first threshold value is smaller than the second threshold value.

At present, in order to improve the utilization rate of electric power resources, a national power grid adopts a peak-valley time-of-use electricity price charging strategy. I.e. the electricity price is in the peak period, the electricity price charge is higher; and the electricity price is in the trough period, and the electricity price charge is lower.

Alternatively, the first threshold and the second threshold may be critical values of the same parameter of the battery. For example, the first threshold and the second threshold are critical values of SOC.

In the embodiment of the application, the management device can charge the battery in the power exchange station according to the smaller threshold value under the condition that the power price is in the peak period, which is beneficial to enabling the power exchange station to quickly reach the available state of the power exchange station at the minimum cost, and can charge the battery in the power exchange station according to the larger threshold value under the condition that the power price is in the valley period, which is beneficial to enabling the power exchange station to reach the maximum profitable state of the power exchange station at the minimum cost, namely the charging method 20 provided by the embodiment of the application is beneficial to saving the operation cost of the power exchange station.

Fig. 3 shows another schematic block diagram of a method of charging a battery according to an embodiment of the present application.

Optionally, as shown in fig. 3, the step S21, that is, in the case where the electricity price is in the peak period, the management device charges the battery in the power exchange station according to the first threshold, includes: s211, in the case where the electricity price is in the peak period, the management device charges the battery having the state of charge SOC smaller than the first threshold value in the battery exchange station to the first threshold value.

In other words, in the case that the electricity price is in the peak period, the management device may determine the battery to be charged according to the magnitude relation between the SOC of the battery in the battery exchange station and the first threshold, and charge the battery to be charged to the first threshold.

In this embodiment, the management means charges the battery having an SOC within the battery station less than the first threshold to the first threshold when the electricity price is in the peak period, which is advantageous for the battery station to quickly reach the usable state of the battery station at minimum cost due to the first threshold being a smaller threshold.

Optionally, as shown in fig. 3, the step S211, that is, in the case where the electricity price is in the peak period, the management device charges the battery having the state of charge SOC in the battery exchange station smaller than the first threshold to the first threshold, includes: s212, in the case that the electricity price is in the peak period, the management device determines a battery to be charged in the power exchange station according to the total number A of batteries in the power exchange station and the minimum operation battery number B required by the power exchange station, wherein the SOC of the battery to be charged is smaller than the first threshold; s213, the management device charges the battery to be charged to the first threshold.

It should be noted that, since the batteries in the power exchange station are flowing, the number of batteries in the power exchange station may be different at different times. At some point, the management device may first determine the total number of batteries in the battery exchange station, denoted as a. In addition, the minimum number of operating batteries required for the battery exchange station may be denoted as B, which means that the battery exchange station can only support operation if the current number of batteries in the battery exchange station is greater than or equal to B. Alternatively, the minimum number of batteries B required for operation of the power exchange station may be preset according to the operating condition of the power exchange station. For example, assuming that the station can accommodate a total of 60 batteries and in fact can support operation as long as there are 10 batteries in the station, the minimum number of operating batteries B required for the station is 10.

Specifically, in the case where the electricity price is in the peak period, the management device may select all the batteries having the SOC smaller than the first threshold value from the battery exchange station, and further, determine the battery to be charged in the battery exchange station in combination with the total number a of the batteries in the current battery exchange station and the minimum number B of the operated batteries required for the battery exchange station, and charge the battery to be charged to the first threshold value.

In the embodiment of the application, under the condition that the electricity price is in the peak period, the management device combines the total number A of the batteries in the current power exchange station and the minimum operation battery number B required by the power exchange station to determine the battery to be charged in the power exchange station, so that the power exchange station can reach the required minimum operation battery number as much as possible at lower cost, and the dynamic balance between the operation requirement and the operation cost is ensured.

Optionally, as shown in fig. 3, the step S212, that is, the management device determines the battery to be charged in the power exchange station according to the total number a of batteries in the power exchange station and the minimum operational battery number B required by the power exchange station, includes: and S214, when A is equal to B, the management device determines that all batteries with SOC smaller than the first threshold value in the power exchange station are the batteries to be charged.

It should be noted that, when the battery exchange station meets the operation requirement, in addition to the total number a of the batteries in the current battery exchange station is required to meet the required minimum number B of the batteries, the battery exchange power is required to be met (i.e. the first threshold is reached), that is, when the battery exchange station meets the operation requirement, the power of at least B batteries in the battery exchange station is greater than or equal to the first threshold.

In other words, if the total number of batteries a in the current station is exactly equal to the number of batteries B that the station needs to operate, the station can support operation at least in terms of the number of batteries. Further, it is also necessary to ensure that the SOC of all the batteries in the battery exchange station should reach above the first threshold value in order to open the battery exchange station to the outside for achieving the battery exchange requirement of the vehicle. At this time, all the batteries having the SOC smaller than the first threshold value in the battery exchange station should be charged to the first threshold value.

In the embodiment of the application, under the condition that the electricity price is in the peak period, if the total number A of the batteries in the current power exchange station is equal to the minimum operation battery number B required by the power exchange station, the management device charges all the batteries with the SOC smaller than the first threshold value in the power exchange station to the first threshold value, so that the power exchange station can reach the required minimum operation battery number as much as possible at lower cost, and the dynamic balance between the operation requirement and the operation cost is ensured.

Optionally, as shown in fig. 3, the step S212, that is, the management device determines the battery to be charged in the power exchange station according to the total number a of batteries in the power exchange station and the minimum operational battery number B required by the power exchange station, includes: s215, in the case where a is greater than B, the management device determines the battery to be charged in the battery exchange station according to the number C of batteries in the battery exchange station having an SOC greater than or equal to the first threshold value and the minimum number B of operated batteries required for the battery exchange station.

The electricity price is in a peak period, which means that the electricity price is more expensive and the charging cost is higher. At this time, if the total number a of the batteries in the current power exchange station is greater than the minimum number B of the batteries required by the power exchange station, it is only necessary to ensure that the electric quantity of B batteries in the power exchange station reaches the first threshold. That is, it is necessary to further determine the number C of batteries in the battery exchange station having an SOC greater than or equal to the first threshold value, and if the number C of batteries in the battery exchange station having an SOC greater than or equal to the first threshold value is already greater than or equal to the minimum number B of batteries required for the battery exchange station, then the batteries in the battery exchange station may not be charged until the number C of batteries in the battery exchange station having an SOC greater than or equal to the first threshold value is less than the minimum number B of batteries required for the battery exchange station. If the number of cells C in the battery exchange station with SOC greater than or equal to the first threshold value is smaller than the minimum number of cells B in operation required by the battery exchange station, at least (B-C) cells are selected from the cells in the battery exchange station with SOC less than the first threshold value for charging up to the first threshold value.

In this embodiment, in case the total number of batteries a in the current battery exchange station is larger than the minimum number of operated batteries B required by the battery exchange station, the management means further determine the battery to be charged in the battery exchange station based on the magnitude relation of the number of batteries C in the battery exchange station having an SOC of greater than or equal to the first threshold value and the minimum number of operated batteries B required by the battery exchange station, which is advantageous for enabling the battery exchange station to reach the available state of the battery exchange station at the fastest speed.

Optionally, as shown in fig. 3, in step S215, that is, in the case where a is greater than B, the management device determines, in the power exchange station, the battery to be charged according to the number of batteries C in the power exchange station having SOC greater than or equal to the first threshold value and the minimum operated battery number B required for the power exchange station, including: s216, in the case where a is greater than B and C is less than B, the management device determines the battery to be charged in the battery exchange station according to the absolute value of the difference between the SOC of each of the plurality of batteries having the SOC less than the first threshold in the battery exchange station and the first threshold, the plurality of batteries being the batteries having the SOC less than the first threshold.

As mentioned above, if the number C of batteries in the battery exchange station having an SOC greater than or equal to the first threshold is smaller than the minimum number B of batteries required for operation of the battery exchange station, at least (B-C) batteries need to be selected from among the batteries in the battery exchange station having an SOC smaller than the first threshold for charging, and further, the (B-C) batteries may be determined according to priorities of all the plurality of batteries in the battery exchange station having an SOC smaller than the first threshold. For example, the battery to be charged may be determined according to a ranking of the SOCs of all the plurality of batteries in the battery exchange station from high to low with the SOCs smaller than the first threshold. For another example, the battery to be charged may be determined based on absolute values of differences between SOCs of all the plurality of batteries in the battery exchange station having SOCs smaller than the first threshold value and the first threshold value.

In this embodiment, in the case where a is greater than B and C is less than B, the management device may further determine the battery to be charged based on the absolute value of the difference between the SOC of the plurality of batteries in the battery exchange station having the SOC less than the first threshold value and the first threshold value, which is more advantageous for enabling the battery exchange station to reach the available state of the battery exchange station at the fastest speed.

Optionally, as shown in fig. 3, in step S216, that is, in the case where a is greater than B and C is less than B, the management device determines the battery to be charged in the battery exchange station according to the absolute value of the difference between the SOCs of the plurality of batteries in the battery exchange station having SOCs less than the first threshold and the first threshold, including: s217, in the case that A is larger than B and C is smaller than B, the management device determines the (B-C) batteries with the smallest absolute values as the batteries to be charged.

It is noted above that the battery to be charged may be determined from the battery exchange station without obtaining absolute values of differences between the SOCs of the plurality of batteries in the battery exchange station having SOCs smaller than the first threshold value and the first threshold value. For example, the (B-C) battery having the highest SOC among the plurality of batteries having the SOC smaller than the first threshold value in the battery replacement station may be directly determined as the battery to be charged. Specifically, the SOC of the plurality of batteries in the battery exchange station having the SOC smaller than the first threshold value may be first ranked from high to low, and the previous (B-C) battery may be determined as the battery to be charged.

Alternatively, in other embodiments, if the total number of batteries a in the current battery station is less than the minimum number of batteries B operated required by the battery station in the case where the electricity price is in the peak period, the battery station does not meet the operating requirement, and even if the SOC of all the batteries in the battery station is greater than or equal to the first threshold, the battery station is not sufficient to support open to the outside. In this case, the battery in the battery exchange station may not be charged temporarily.

Optionally, as shown in fig. 3, the step S21, that is, when the electricity price is in the trough period, the management device charges the battery in the power exchange station according to the second threshold, including: and S218, in the case that the electricity price is in the trough period, the management device charges all batteries with the charge state SOC smaller than the second threshold value in the power exchange station to the second threshold value.

Optionally, in an embodiment of the present application, the first threshold is a minimum SOC that allows for power conversion, and the second threshold is a maximum SOC that can be reached by the battery.

For example, the first threshold may be 80% and the second threshold may be 95%. It should be appreciated that the first and second thresholds may be other values, and the first and second thresholds may be empirically predetermined.

Optionally, as shown in fig. 3, the charging method 20 further includes: s22, under the condition that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station, the management device determines the charging power of each battery to be charged in all the batteries to be charged according to the maximum input power of the power exchange station.

In particular, in case the maximum input power of the battery exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the battery exchange station, the charging power of each battery to be charged may be determined according to the number of batteries to be charged in the battery exchange station. For example, if the number of batteries to be charged in the battery exchange station is 1, the maximum input power of the battery exchange station may be directly determined as the charging power of the batteries to be charged. For another example, if the number of the batteries to be charged in the power exchange station is greater than 1, the charging power may be allocated to all the batteries to be charged according to the maximum input power of the power exchange station, that is, the sum of the charging powers of all the allocated batteries to be charged is equal to the maximum input power of the power exchange station.

In this embodiment, in the case that the maximum input power of the battery exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the battery exchange station, the management device determines the charging power of each of the batteries to be charged in all the batteries to be charged according to the maximum input power of the battery exchange station, so that the charging work of the battery exchange station can be safely and normally operated.

Optionally, in the embodiment of the present application, in step S22, that is, in the case that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the to-be-charged batteries in the power exchange station, the management device determines the charging power of each to-be-charged battery in the all to-be-charged batteries according to the maximum input power of the power exchange station, including: s221, in the case that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station, the management device determines the ratio of the maximum input power of the power exchange station to the number of all the batteries to be charged as the charging power of each battery to be charged.

Alternatively, in other embodiments, in case the maximum input power of the battery exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the battery exchange station, the charging power may not be equally distributed to all the batteries to be charged in the battery exchange station, for example, the charging power may be randomly distributed. For another example, the charging power is distributed according to the SOCs of all the batteries to be charged, for example, a small SOC distributes a larger charging power and a large SOC distributes a smaller charging power. The embodiment of the present application is not limited as long as the sum of the allocated charging powers of all the batteries to be charged is equal to the maximum input power of the battery exchange station.

Alternatively, in case the maximum input power of the battery exchange station is greater than or equal to the sum of the maximum input powers of all the batteries to be charged in the battery exchange station, each battery to be charged may be charged according to its maximum input power.

The charging method of the battery according to the embodiment of the present application will be described in detail.

First, each parameter used in the charging method is defined as follows. The total number of battery that the power exchange station can hold is N _sum, the minimum number of battery that the power exchange station needs to operate is N _min, the total number of battery in the current power exchange station is N _current, the maximum input power of the power exchange station is P _maxstation, the maximum input power of each battery is P _maxbettery, and the number of battery to be charged is N _charge. The SOC of the nth battery is SOC (n), the minimum SOC allowing battery replacement is SOC _min, the maximum SOC which the battery can charge, namely the ideal working condition SOC is SOC _ideal, the number of the batteries which are larger than or equal to the minimum SOC allowing battery replacement is count (SOC (n) > SOC _min), and the number of the batteries which are smaller than the ideal working condition SOC is count (SOC (n) > SOC _ideal).

Charging strategy with electricity price at peak period:

1. If N _current = 0, the battery in the battery exchange station is not charged.

2. If N _current＝N _min, and count (SOC (N) > SOC _min)＜N _min. All the cells of SOC (N) < SOC _min begin to charge until count (SOC (N) > SOC _min) reaches N _min.

3. If N _current＞N _min, and count (SOC (N). Gtoreq.SOC _min)<N _min.

A.N _min-count(soc(n)≥SOC _min) is more than or equal to 1, selecting the battery with the smallest difference value for charging according to the SOC _min -SOC (N) sequence until the count (SOC (N) is more than or equal to SOC _min) reaches N _min.

B.N _min-count(soc(n)≥SOC _min) is less than or equal to 0, the battery in the power exchange station can not be charged.

In the charging process, if the number of the current batteries to be charged is N _charge =1 and P _maxstation＜P _maxbettery, the charging power=p _maxstation can be adjusted; if the number of the current batteries to be charged is N _charge > 1 and P _maxstation＜P _maxbettery, the charging power= (P _maxstation/N _charge) of each battery to be charged can be adjusted; if P _maxstation≥P _maxbettery, each battery to be charged is charged with the charging power of P _maxbettery.

Charging strategy with electricity prices in trough period:

if N _current = 0, the battery in the battery exchange station is not charged.

If there are batteries with count (SOC _ideal) > 0, all batteries with SOC _ideal with SOC n are charged until SOC _ideal is reached.

In the charging process, if the number of the current batteries to be charged is N _charge =1 and P _maxstation<P _maxbettery, the charging power=p _maxstation can be adjusted; if the number of the current batteries to be charged is N _charge >1 and P _maxstation<P _maxbettery, the charging power= (P _maxstation/N _charge) of each battery to be charged can be adjusted; if P _maxstation≥P _maxbettery, each battery to be charged is charged with the charging power of P _maxbettery.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The method of charging the battery according to the embodiment of the present application is described in detail above, and the method of charging the battery according to the embodiment of the present application will be described in detail below with reference to fig. 4 and 6. The technical features described for the method embodiments apply to the following device embodiments.

Fig. 4 shows a schematic block diagram of a charging device 300 for a battery according to an embodiment of the present application. As shown in fig. 4, the charging device 300 includes some or all of the following.

A control unit 310 for charging the battery in the battery exchange station according to a first threshold value in case the electricity price is in a peak period, or according to a second threshold value in case the electricity price is in a trough period; wherein the first threshold is less than the second threshold.

Optionally, in an embodiment of the present application, the control unit 310 is specifically configured to: and charging the battery with the state of charge (SOC) smaller than the first threshold value in the power exchange station to the first threshold value under the condition that the electricity price is in the peak period.

Alternatively, as shown in fig. 5, the control unit 310 includes: a determining subunit 311, configured to determine, in the current power exchange station, a battery to be charged, where the SOC of the battery to be charged is less than the first threshold, according to the total number a of batteries in the power exchange station and the minimum number B of batteries required for the power exchange station when the power price is in the peak period; a charging subunit 312, configured to charge the battery to be charged to the first threshold value.

Optionally, in the embodiment of the present application, the determining subunit 311 is specifically configured to: and under the condition that A is equal to B, determining all batteries with SOC smaller than the first threshold value in the power exchange station as the batteries to be charged.

Optionally, in the embodiment of the present application, the determining subunit 311 is specifically configured to: in case a is greater than B, the battery to be charged is determined in the battery exchange station based on the number of batteries C in the battery exchange station having an SOC greater than the first threshold value and the minimum number of operated batteries B required for the battery exchange station.

Optionally, in the embodiment of the present application, the determining subunit 311 is specifically configured to: and when A is larger than B and C is smaller than B, determining the battery to be charged in the power exchange station according to the absolute value of the difference value between the SOCs of the batteries in the power exchange station with SOCs smaller than a first threshold value and the first threshold value, wherein the batteries are batteries with SOCs smaller than the first threshold value.

Optionally, in an embodiment of the present application, the determining subunit 311 has a logic unit for: in the case where a is greater than B and C is less than B, the (B-C) batteries having the smallest absolute value are determined as the batteries to be charged.

Optionally, in an embodiment of the present application, the control unit 210 is specifically configured to: and in the case that the electricity price is in the trough period, charging all batteries with the charge state SOC smaller than the second threshold value in the power exchange station to the second threshold value.

Optionally, in an embodiment of the present application, the charging device further includes: and determining the charging power of each battery to be charged in all the batteries to be charged according to the maximum input power of the power exchange station under the condition that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station.

Optionally, in an embodiment of the present application, in a case where the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of the to-be-charged batteries in the power exchange station, charging the to-be-charged batteries in the power exchange station within the maximum input power of the power exchange station includes: and determining the ratio of the maximum input power of the power exchange station to the number of all the batteries to be charged as the charging power of each battery to be charged under the condition that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station.

It should be appreciated that the charging device 400 according to the embodiment of the present application may be used to perform the flow in each of the methods of fig. 2 and 3, and will not be described herein for brevity.

Fig. 6 shows a schematic block diagram of a charging device 500 for a battery according to an embodiment of the present application. The charging device 500 is applied to a power exchange station, as shown in fig. 6, the charging device 500 includes a processor 510 and a memory 520, wherein the memory 520 is used for storing instructions, and the processor 510 is used for reading the instructions and executing the methods of the various embodiments of the application described above based on the instructions.

Wherein the memory 520 may be a separate device from the processor 510 or may be integrated into the processor 510.

Optionally, as shown in fig. 6, the charging apparatus 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices. In particular, information or data may be transmitted to other devices or information or data transmitted by other devices may be received.

Optionally, the embodiment of the present application further provides a chip, which includes a processor, and is configured to call and run a computer program from a memory, so that a device installed with the chip can execute corresponding flows in each method of the embodiment of the present application, which is not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The Processor may be a general purpose Processor, a digital signal Processor (DIGITAL SIGNAL Processor, DSP), an Application SPECIFIC INTEGRATED Circuit (ASIC), an off-the-shelf programmable gate array (Field Programmable GATE ARRAY, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the like, but in the alternative, the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDR SDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM), and Direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to the charging device in the embodiment of the present application, and the computer program causes a computer to execute corresponding processes implemented by the charging device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the charging device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding flow implemented by the charging device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the charging device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the charging device in each method of the embodiment of the present application, which are not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of charging a battery, for use in a power exchange station, the method comprising:

in case the electricity price is in peak period, charging the battery in the battery exchange station according to a first threshold, or

Charging a battery in the power exchange station according to a second threshold value under the condition that the electricity price is in a trough period;

wherein the first threshold is less than the second threshold.
The charging method according to claim 1, wherein said charging the battery in the battery exchange station according to a first threshold value in the case where the electricity price is in a peak period, comprises:

and under the condition that the electricity price is in the peak period, charging the battery with the state of charge (SOC) smaller than the first threshold value in the power exchange station to the first threshold value.
The charging method according to claim 2, wherein said charging the battery having the state of charge SOC in the battery exchange station smaller than the first threshold to the first threshold in the case where the electricity price is in the peak period, comprises:

Determining a battery to be charged in the power exchange station according to the total number A of batteries in the power exchange station and the minimum operating battery number B required by the power exchange station when the electricity price is in a peak period, wherein the SOC of the battery to be charged is smaller than the first threshold value;

And charging the battery to be charged to the first threshold value.
A charging method according to claim 3, characterized in that said determining in the station to be charged on the basis of the current total number of batteries a in the station and the minimum number of batteries B in operation required by the station comprises:

And under the condition that A is equal to B, determining all batteries with SOC smaller than the first threshold value in the power exchange station as the batteries to be charged.
A charging method according to claim 3, characterized in that said determining the battery to be charged in the station according to the current total number of batteries a in the station and the minimum number of batteries B in operation required by the station comprises:

In the case where a is greater than B, the battery to be charged is determined in the battery exchange station according to the number of batteries C in which the SOC in the battery exchange station is greater than or equal to the first threshold value and the minimum number of operated batteries B required for the battery exchange station.
The charging method according to claim 5, wherein said determining the battery to be charged in the battery exchange station in accordance with the number of batteries C in which the SOC in the battery exchange station is greater than or equal to the first threshold value and the minimum number of operated batteries B required for the battery exchange station in the case where a is greater than B comprises:

And when A is larger than B and C is smaller than B, determining the battery to be charged in the power exchange station according to the absolute value of the difference value between the SOCs of the batteries in the power exchange station, which are less than the first threshold value, and the first threshold value.
The charging method according to claim 6, wherein the determining the battery to be charged in the battery exchange station according to an absolute value of a difference between SOCs of a plurality of batteries having SOCs smaller than a first threshold value in the battery exchange station and the first threshold value in a case where a is larger than B and C is smaller than B includes:

In the case where a is greater than B and C is less than B, the (B-C) batteries having the smallest absolute value are determined as the batteries to be charged.
The charging method according to claim 1, wherein the charging the battery in the battery exchange station according to the second threshold value in the case where the electricity price is in the trough period, comprises:

And in the case that the electricity price is in the trough period, charging all batteries with the charge state SOC smaller than the second threshold value in the power exchange station to the second threshold value.
The charging method according to any one of claims 1 to 8, wherein the first threshold value is a minimum SOC that allows battery replacement, and the second threshold value is a maximum SOC that can be charged by the battery.
The charging method according to any one of claims 1 to 9, characterized in that the charging method further comprises:

and under the condition that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station, determining the charging power of each battery to be charged in all the batteries to be charged according to the maximum input power of the power exchange station.
The charging method according to claim 10, wherein the determining the charging power of each of the all of the to-be-charged batteries from the maximum input power of the battery exchange station in the case where the maximum input power of the battery exchange station is smaller than the sum of the maximum input powers of all of the to-be-charged batteries in the battery exchange station includes:

And determining the ratio of the maximum input power of the power exchange station to the number of all the batteries to be charged as the charging power of each battery to be charged when the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station.
A charging device for a battery, for use in a power exchange station, the charging device comprising:

The control unit is used for charging the battery in the power exchange station according to a first threshold value when the electricity price is in a peak period or charging the battery in the power exchange station according to a second threshold value when the electricity price is in a trough period;

wherein the first threshold is less than the second threshold.
Charging device according to claim 12, characterized in that the control unit is specifically adapted to:

and under the condition that the electricity price is in the peak period, charging the battery with the state of charge (SOC) smaller than the first threshold value in the power exchange station to the first threshold value.
The charging device according to claim 13, wherein the control unit includes:

A determining subunit, configured to determine, in the power exchange station, a battery to be charged according to a total number a of batteries in the current power exchange station and a minimum operational battery number B required by the power exchange station, where the power price is in a peak period, and an SOC of the battery to be charged is smaller than the first threshold;

and the charging subunit is used for charging the battery to be charged to the first threshold value.
The charging device according to claim 14, wherein the determining subunit is specifically configured to:

And under the condition that A is equal to B, determining all batteries with SOC smaller than the first threshold value in the power exchange station as the batteries to be charged.
The charging device according to claim 14, wherein the determining subunit is specifically configured to:

In the case where a is greater than B, the battery to be charged is determined in the battery exchange station according to the number C of batteries in which the SOC is greater than the first threshold value in the battery exchange station and the minimum number B of operated batteries required for the battery exchange station.
The charging device according to claim 16, wherein the determining subunit is specifically configured to:

And when A is larger than B and C is smaller than B, determining the battery to be charged in the power exchange station according to the absolute value of the difference value between the SOCs of the batteries in the power exchange station, which are less than the first threshold value, and the first threshold value.
The charging device according to claim 17, wherein the determination subunit has means for:

in the case where a is greater than B and C is less than B by a difference greater than or equal to 1, the (B-C) batteries having the smallest absolute value are determined as the batteries to be charged.
Charging device according to claim 12, characterized in that the control unit is specifically adapted to:

And in the case that the electricity price is in the trough period, charging all batteries with the charge state SOC smaller than the second threshold value in the power exchange station to the second threshold value.
The charging device according to any one of claims 12 to 19, wherein the first threshold is a minimum SOC that allows battery replacement, and the second threshold is a maximum SOC that can be charged by a battery.
The charging device according to any one of claims 12 to 20, characterized in that the charging device further comprises:

and under the condition that the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station, determining the charging power of each battery to be charged in all the batteries to be charged according to the maximum input power of the power exchange station.
The charging device of claim 21, wherein charging the battery to be charged within the power exchange station within the maximum input power of the power exchange station if the maximum input power of the power exchange station is less than the sum of the maximum input powers of the battery to be charged within the power exchange station, comprises:

And determining the ratio of the maximum input power of the power exchange station to the number of all the batteries to be charged as the charging power of each battery to be charged when the maximum input power of the power exchange station is smaller than the sum of the maximum input powers of all the batteries to be charged in the power exchange station.
A charging device for a battery, characterized in that it is applied in a power exchange station, said charging device comprising a memory for storing instructions and a processor for reading said instructions and performing the method according to any one of claims 1 to 11 according to said instructions.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 11.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 11.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 11.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 11.