Battery pack charging control method, electronic equipment and battery swap station

Abstract

The invention provides a battery pack charging control method, electronic equipment and a battery swap station, and the method comprises the steps: determining a first target battery pack from a plurality of battery packs in a current time period based on the predicted number of battery swap demands in a next time period; the first target battery pack is quickly charged, so that a predicted number of battery packs meet the battery replacement requirement before the current time period is ended; wherein the number of the first target battery packs is smaller than or equal to the predicted number. The energy consumption of the battery swap station is saved to the maximum extent while the battery swap requirement of the vehicle is met, the charging / discharging performance of the battery pack is ensured, and the service life of the battery pack is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of battery pack charging management in battery swap stations, and in particular to a battery pack charging control method, electronic equipment and a battery swap station. Background Art

[0002] With the development of science and technology, cars have become an indispensable means of transportation in people's daily lives. At present, electric vehicles account for an increasingly large proportion of the automobile market. The main way to charge the vehicle is to charge the whole vehicle through charging piles. During the charging period, users cannot use the vehicle, which seriously affects the user's experience of using the vehicle. Therefore, battery swap stations came into being. Battery swap stations are equipped with a large number of spare batteries. When the power battery of an electric vehicle needs to be charged, you can go to the battery swap station to directly replace the fully charged battery. It takes a short time and basically does not affect the user's use of the vehicle.

[0003] How to manage the charging of each battery pack in a battery swap station to reduce energy consumption and ensure the charging and discharging performance of the battery pack is a current research hotspot in battery swap stations.

[0004] Therefore, this application is specially filed. Summary of the invention

[0005] In view of this, the purpose of this application is to propose a battery pack charging control method, electronic equipment and battery swap station, which can save the energy consumption of the battery swap station to the maximum extent while meeting the vehicle battery swap needs, and ensure the charging / discharging performance of the battery pack, which is conducive to extending the service life of the battery pack.

[0006] Based on the above objectives, in a first aspect, the present application provides a battery pack charging control method, comprising:

[0007] Based on the predicted number of battery replacement demands in the next period, determine a first target battery pack from multiple battery packs in the current period;

[0008] fast charging the first target battery pack so that a predicted number of battery packs meet the battery replacement requirement before the end of the current time period;

[0009] Wherein, the quantity of the first target battery packs is less than or equal to the predicted quantity.

[0010] Furthermore, the step of determining a first target battery pack from a plurality of battery packs in a current time period based on the predicted number of battery replacement demands in the next time period includes:

[0011] Determine a first number of battery packs among the plurality of battery packs whose remaining power reaches a power threshold;

[0012] In response to the first number being smaller than the predicted value, calculating a difference between the predicted number and the first number;

[0013] From the battery packs whose remaining power does not reach the power threshold, determine the battery packs whose number is the difference as the first target battery packs.

[0014] Furthermore, the step of determining the battery packs whose remaining power does not reach the power threshold and whose number is equal to the difference as the first target battery packs includes:

[0015] In descending order of remaining power, determine, from the battery packs whose remaining power does not reach the power threshold, the battery packs whose number is the difference as the first target battery packs;

[0016] Alternatively, for battery packs whose remaining power does not reach the power threshold, predict the charging time required for each battery pack to charge from the remaining power to the power threshold, and determine the battery packs with the difference as the first target battery packs from each battery pack in order of charging time from short to long.

[0017] Furthermore, the predicting of the charging time required for each battery pack to charge from the remaining power to the power threshold includes:

[0018] Inputting the remaining power of the battery pack, the power threshold, the charging power, and the temperature rise curve data of the battery pack during the charging process into the prediction model to obtain the charging time required for the battery pack to charge from the remaining power to the power threshold;

[0019] Alternatively, the difference between the power threshold and the remaining power of the battery pack is determined, and the ratio of the difference to the charging power is determined as the charging time required for charging the battery pack from the remaining power to the power threshold.

[0020] Furthermore, it also includes:

[0021] Slow charging is performed on the second target battery pack that does not meet the battery replacement requirements except the first target battery pack.

[0022] Furthermore, the slow charging of the second target battery pack other than the first target battery pack that does not meet the battery replacement requirement includes:

[0023] In response to the current ambient temperature being higher than a temperature threshold, slow charging the second target battery pack based on a strategy of keeping the charging power constant;

[0024] In response to the current ambient temperature being lower than the temperature threshold, the second target battery pack is slowly charged based on a strategy of dynamic change of charging power.

[0025] Furthermore, in response to the current ambient temperature being higher than the temperature threshold, the second target battery pack is slowly charged based on a strategy of constant charging power, including:

[0026] For the current second target battery pack, determine the allowable temperature rise value according to the current temperature of the current second target battery pack and the temperature threshold for triggering the battery pack cooling function to be turned on;

[0027] Using the allowable temperature rise value, the current ambient temperature and the current temperature of the current second target battery pack as query input information, determine the corresponding charging power from the charging parameter data relationship of the current second target battery pack, and charge the current second target battery pack according to the corresponding charging power until the remaining power of the current second target battery pack reaches the power threshold.

[0028] Furthermore, in response to the current ambient temperature being lower than the temperature threshold, the second target battery pack is slowly charged based on a strategy of dynamic change of charging power, including:

[0029] For the current second target battery pack, determining an allowable charging power according to the current temperature of the current second target battery pack, and charging the current second target battery pack according to the allowable charging power;

[0030] During the charging process, the current temperature of the second target battery pack is monitored in real time, and the allowed charging power is updated based on the monitored value of the current temperature.

[0031] Based on the above purpose, in a second aspect, the present application also provides a battery pack charging control method device, including:

[0032] A determination module, configured to determine a first target battery pack from a plurality of battery packs in a current time period based on a predicted number of battery replacement demands in a next time period;

[0033] A fast charging module, used for fast charging the first target battery pack so that a predicted number of battery packs meet the battery replacement requirement before the end of the current time period;

[0034] Wherein, the quantity of the first target battery packs is less than or equal to the predicted quantity.

[0035] Based on the above purpose, in a third aspect, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the battery pack charging control method as described in the first aspect above is implemented.

[0036] Based on the above purpose, in a fourth aspect, the present application also provides a battery swap station, including the electronic device as described in the third aspect above.

[0037] Based on the above purpose, in a fifth aspect, the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the battery pack charging control method as described in any one of the above-mentioned first aspects.

[0038] From the above, it can be seen that the battery pack charging control method provided in the present application only fast charges a part of the battery packs to meet the user's battery replacement needs, and does not fast charge all battery packs. Therefore, while meeting the battery replacement needs of the vehicle, it saves the energy consumption of the battery replacement station to the maximum extent, and ensures the charge / discharge performance of the battery pack, which is beneficial to extend the service life of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A schematic diagram of a battery pack charging control method according to an embodiment of the present application Figure 1 ;

[0041] Figure 2 A schematic diagram of a battery pack charging control method according to an embodiment of the present application Figure 2 ;

[0042] Figure 3 A schematic diagram of a battery pack charging control method according to an embodiment of the present application Figure 3 ;

[0043] Figure 4 A schematic diagram of a battery pack charging control method according to an embodiment of the present application Figure 4 ;

[0044] Figure 5 A schematic diagram of a battery pack charging control method according to an embodiment of the present application Figure 5 ;

[0045] Figure 6 A schematic diagram of a battery pack charging control method according to an embodiment of the present application Figure 6 ;

[0046] Figure 7 A schematic diagram of a battery pack charging control method according to an embodiment of the present application Figure 7 ;

[0047] Figure 8A schematic diagram of a battery pack charging control method according to an embodiment of the present application Figure 8 ;

[0048] Fig. 9 A schematic diagram of a battery pack charging control method according to an embodiment of the present application Figure 9 ;

[0049] Fig.10 A schematic diagram of a battery pack charging control method and device according to an embodiment of the present application;

[0050] Fig.11 A schematic diagram of the structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0052] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0053] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0054] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0055] The embodiment of the present application provides a battery pack charging control method, which can be used to manage the charging of each battery pack in a battery swap station, such as which battery packs are suitable for fast charging, which batteries are suitable for slow charging, and what the adapted charging power is. The purpose is to save the energy consumption of the battery swap station to the maximum extent while meeting the user's battery swap needs, and to ensure the charging / discharging performance of the battery pack, which is conducive to extending the service life of the battery pack. The battery pack charging control method can be executed by a battery pack charging control device, which can be composed of software and / or hardware.

[0056] Figure 1 A flow chart of a battery pack charging control method is shown as follows: Figure 1 As shown, the battery pack charging control method includes the following steps:

[0057] S110. Based on the predicted number of battery replacement demands in the next time period, determine a first target battery pack from multiple battery packs in the current time period.

[0058] The predicted number of battery swapping needs may specifically refer to the number of times a battery pack is swapped. The predicted number of battery swapping needs may be determined by statistically analyzing historical operating data of the battery swapping station.

[0059] Specifically, by analyzing the daily operation data of the battery swap station, it is found that the peak operation period of the battery swap station is during the day, that is, the frequency of battery pack replacement is higher during the day, less at night, higher on weekends, and less on weekdays. Therefore, by analyzing the daily operation data of the battery swap station, the battery replacement pattern of the battery pack in the battery swap station can be determined, such as the daily replacement frequency and the distribution time period of battery replacement. Specifically, the operation data of the battery swap station in the past six months can be collected and statistically analyzed to determine the battery replacement pattern from multiple dimensions, such as the battery replacement frequency and battery replacement distribution time period during the day and night of weekends, the battery replacement frequency and battery replacement distribution time period during the day and night of weekdays, and the battery replacement frequency and battery replacement distribution time period during the day and night of holidays. Based on this battery replacement pattern, the battery replacement situation in the future can be predicted.

[0060] For example, one hour can be used as a time period. For example, if the current time is 10 a.m., 10 a.m. to 11 a.m. can be defined as the current time period, and 11 a.m. to 12 a.m. can be defined as the next time period. In the current time period, based on the predicted number of battery replacement demands in the next time period, a first target battery pack is determined from multiple battery packs in the current time period.

[0061] Wherein, the quantity of the first target battery packs is less than or equal to the predicted quantity.

[0062] Exemplarily, when, in addition to the battery packs that meet the battery replacement needs of the current time period, there are also excess fully charged (or the remaining power reaches the power threshold) battery packs among the multiple battery packs in the current time period, then the number of first target battery packs that need to be fast charged at this time is less than the predicted number; when, in addition to the battery packs that meet the battery replacement needs of the current time period, there are no excess fully charged (or the remaining power reaches the power threshold) battery packs among the multiple battery packs in the current time period, then the number of first target battery packs that need to be fast charged at this time is equal to the predicted number.

[0063] S120. Fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period.

[0064] In order to meet the battery replacement demand in the next period, the first target battery pack is fast charged.

[0065] The battery pack charging control method provided in the embodiment of the present application only fast charges a portion of the battery packs to meet the user's battery replacement needs, and does not fast charge all battery packs. Therefore, while meeting the vehicle's battery replacement needs, it saves the energy consumption of the battery replacement station to the maximum extent and ensures the charge / discharge performance of the battery pack, which is beneficial to extending the service life of the battery pack.

[0066] On the basis of the above embodiment, this embodiment further limits the above step S110 "determining the first target battery pack from multiple battery packs in the current time period based on the predicted number of battery replacement needs in the next time period", which can achieve maximum energy saving of the battery replacement station while meeting the battery replacement needs of the vehicle, and ensure the charging / discharging performance of the battery pack, which is conducive to extending the service life of the battery pack. Figure 2 As shown, the battery pack charging control method includes the following steps:

[0067] S210: Determine a first number of battery packs among the plurality of battery packs whose remaining power reaches a power threshold.

[0068] S220. In response to the first quantity being smaller than the predicted value, calculate a difference between the predicted quantity and the first quantity.

[0069] S230: Determine, from the battery packs whose remaining power does not reach the power threshold, battery packs whose number is the difference as the first target battery packs.

[0070] For example, if the predicted number of battery swapping demands in the next time period is 10, and among the multiple battery packs in the current time period, in addition to the battery packs that meet the battery swapping demands in the current time period, there are 10 fully charged (or the remaining power reaches the power threshold) battery packs, then the number of first target battery packs is 0 at this time, which means that no battery packs are in a hurry to charge, or in other words, even if no battery pack is fast charged, the battery swapping demand in the next time period can be met. If among the multiple battery packs in the current time period, in addition to the battery packs that meet the battery swapping demands in the current time period, there are 5 fully charged (or the remaining power reaches the power threshold) battery packs, then the number of first target battery packs is 5 at this time, which means that 5 battery packs are in a hurry to charge, or in other words, at least 5 battery packs need to be fast charged to meet the battery swapping demand in the next time period. If among the multiple battery packs in the current time period, except for the battery pack that meets the battery replacement demand of the current time period, the number of fully charged (or the remaining power reaches the power threshold) battery packs is 0, then the number of the first target battery packs is 10, which means that at least 10 battery packs need to be charged urgently, or in other words, at least 10 battery packs need to be fast charged to meet the battery replacement demand of the next time period.

[0071] By determining the number of first target battery packs as the difference between the predicted number and the first number, it is possible to meet the user's battery replacement needs while minimizing the number of battery packs that require fast charging, thereby maximizing the energy consumption of the battery replacement station and ensuring the charge / discharge performance of the battery pack, which is conducive to extending the service life of the battery pack.

[0072] S240. Fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period.

[0073] On the basis of the above embodiment, this embodiment further limits the above step S230 "determining the number of battery packs with the difference value from the battery packs whose remaining power does not reach the power threshold as the first target battery pack", with the purpose of screening out the battery packs with shorter charging time when the battery pack meets the battery replacement requirements, and determining such battery packs as the first target battery packs, so that the charging time of the first target battery pack is shorter, thereby saving energy consumption of the battery replacement station, and reducing the impact of fast charging on the charge / discharge performance of the battery pack, which is conducive to extending the service life of the battery pack. Figure 3 As shown, the battery pack charging control method includes the following steps:

[0074] S310: Determine a first number of battery packs among the plurality of battery packs whose remaining power reaches a power threshold.

[0075] S320: In response to the first quantity being smaller than the predicted value, calculating a difference between the predicted quantity and the first quantity.

[0076] S330 , determining, in descending order of remaining power, battery packs whose remaining power does not reach the power threshold and whose number is the difference as the first target battery packs.

[0077] That is, the battery pack with more remaining power is preferentially selected as the first target battery pack. When a battery pack has more remaining power, the charging time required to charge it to the target power is usually shorter. Therefore, by preferentially selecting the battery pack with more remaining power as the first target battery pack, it is possible to screen out the battery pack that requires a shorter charging time when the battery pack meets the battery replacement requirements. This type of battery pack is determined as the first target battery pack so that the charging time of the first target battery pack is shorter, thereby saving energy consumption at the battery replacement station and reducing the impact of fast charging on the charge / discharge performance of the battery pack, which is beneficial to extending the service life of the battery pack.

[0078] S340. Fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period.

[0079] On the basis of the above embodiment, this embodiment further limits the above step S230 "determining the number of battery packs with the difference value from the battery packs whose remaining power does not reach the power threshold as the first target battery pack", with the purpose of screening out the battery packs with shorter charging time when the battery pack meets the battery replacement requirements, and determining such battery packs as the first target battery packs, so that the charging time of the first target battery pack is shorter, thereby saving energy consumption of the battery replacement station, and reducing the impact of fast charging on the charge / discharge performance of the battery pack, which is conducive to extending the service life of the battery pack. Figure 4 As shown, the battery pack charging control method includes the following steps:

[0080] S410: Determine a first number of battery packs among the plurality of battery packs whose remaining power reaches a power threshold.

[0081] S420: In response to the first number being smaller than the predicted value, calculating a difference between the predicted number and the first number.

[0082] S430: For battery packs whose remaining power does not reach the power threshold, predict the charging time required for each battery pack to charge from the remaining power to the power threshold.

[0083] S440: Determine, in order of charging time from shortest to longest, from each battery pack a battery pack whose number is equal to the difference as the first target battery pack.

[0084] For example, they are arranged in order from short to long in charging time, corresponding to battery pack No. 1, battery pack No. 2, battery pack No. 3...n battery packs respectively. If the difference is 1, battery pack No. 1 is determined as the first target battery pack; if the difference is 2, battery packs No. 1 and No. 2 are determined as the first target battery packs; if the difference is 3, battery packs No. 1, No. 2 and No. 3 are determined as the first target battery packs; and so on.

[0085] By determining the battery pack with a shorter charging time as the first target battery pack, the energy consumption of the battery swap station can be further saved, and the impact of fast charging on the charge / discharge performance of the battery pack can be reduced, which is conducive to extending the service life of the battery pack.

[0086] S450. Fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period.

[0087] Based on the above embodiment, this embodiment further defines the above step S430 "for battery packs whose remaining power does not reach the power threshold, predicting the charging time required for each battery pack to charge from the remaining power to the power threshold", with the purpose of achieving accurate prediction of the charging time required for each battery pack to charge from the remaining power to the power threshold. Figure 5 As shown, the battery pack charging control method includes the following steps:

[0088] S510: Determine a first number of battery packs whose remaining power reaches a power threshold among the multiple battery packs.

[0089] S520: In response to the first number being smaller than the predicted value, calculate a difference between the predicted number and the first number.

[0090] S530, input the remaining power of the battery pack, the power threshold, the charging power, and the temperature rise curve data of the battery pack during the charging process into the prediction model to obtain the charging time required for the battery pack to charge from the remaining power to the power threshold; or, determine the difference between the power threshold and the remaining power of the battery pack, and determine the ratio of the difference to the charging power as the charging time required for the battery pack to charge from the remaining power to the power threshold.

[0091] It is understandable that the greater the charging power, the faster the charging speed is, and the shorter the required charging time is, when other conditions are the same. The more remaining power there is, the shorter the time required to charge to full power is, when other conditions are the same. Moreover, the temperature of the battery pack also affects the charging speed. Therefore, by inputting the remaining power of the battery pack, the power threshold, the charging power, and the temperature rise curve data of the battery pack during the charging process into the prediction model, the charging time required for the battery pack to charge from the remaining power to the power threshold is obtained, which can fully consider a variety of influencing factors, thereby improving the prediction accuracy of the charging time.

[0092] S540: Determine, in order of charging time from shortest to longest, from each battery pack a battery pack whose number is equal to the difference as the first target battery pack.

[0093] S550. Fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period.

[0094] On the basis of the above embodiment, this embodiment further limits the above battery pack charging control method, specifically adding the following step of "slow charging the second target battery pack that does not meet the battery replacement requirements except the first target battery pack". Slow charging has little effect on the performance of the battery pack, which is beneficial to extend the life of the battery pack and reduce the charging energy consumption of the battery replacement station. Therefore, slow charging in advance for battery packs that do not require fast charging can not only protect the performance of the battery pack, but also prepare for subsequent battery replacement needs in advance and save energy. Figure 6 As shown, the battery pack charging control method includes the following steps:

[0095] S610. Based on the predicted number of battery replacement demands in the next time period, determine a first target battery pack from multiple battery packs in the current time period.

[0096] S620. Fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period.

[0097] Wherein, the quantity of the first target battery packs is less than or equal to the predicted quantity.

[0098] S630. Slowly charge the second target battery pack that does not meet the battery replacement requirements except the first target battery pack.

[0099] On the basis of the above embodiment, this embodiment further limits the above step S630 "slow charging the second target battery pack that does not meet the battery replacement requirements except the first target battery pack", specifically, different charging strategies are adopted for the second battery pack according to the ambient temperature to save energy and protect the charging and discharging performance of the battery pack. Figure 7As shown, the battery pack charging control method includes the following steps:

[0100] S710. Based on the predicted number of battery replacement demands in the next time period, determine a first target battery pack from multiple battery packs in the current time period.

[0101] S720. Fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period.

[0102] Wherein, the quantity of the first target battery packs is less than or equal to the predicted quantity.

[0103] S730a: In response to the current ambient temperature being higher than the temperature threshold, the second target battery pack is slowly charged based on a strategy of keeping the charging power constant.

[0104] If the current ambient temperature is high, a suitable charging power can be selected to charge the second target battery pack at a constant power. If the current ambient temperature is low, the performance of the battery pack should be protected first, and a lower charging power should be selected for charging. As the charging progresses, when the temperature of the battery pack itself rises, the charging power is adjusted to take into account the charging efficiency.

[0105] S730b: In response to the current ambient temperature being lower than the temperature threshold, the second target battery pack is slowly charged based on a strategy of dynamic change of charging power.

[0106] Based on the above embodiment, this embodiment further defines the above step S730a "in response to the current ambient temperature being higher than the temperature threshold, the second target battery pack is slowly charged based on a strategy of constant charging power". Figure 8 As shown, the battery pack charging control method includes the following steps:

[0107] S810. Based on the predicted number of battery replacement demands in the next time period, determine a first target battery pack from multiple battery packs in the current time period.

[0108] S820. Fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period.

[0109] Wherein, the quantity of the first target battery packs is less than or equal to the predicted quantity.

[0110] S830a. In response to the current ambient temperature being higher than a temperature threshold, for the current second target battery pack, determining an allowable temperature rise value according to the current temperature of the current second target battery pack and the temperature threshold for triggering activation of a cooling function of the battery pack; using the allowable temperature rise value, the current ambient temperature and the current temperature of the current second target battery pack as query input information, determining a corresponding charging power from the charging parameter data relationship of the current second target battery pack, and charging the current second target battery pack according to the corresponding charging power until the remaining power of the current second target battery pack reaches the power threshold.

[0111] It is understandable that the battery pack will self-heat during the charging process, so the temperature of the battery pack will gradually increase. When the temperature of the battery pack increases to a certain value, the battery pack protection mechanism will be triggered, that is, the battery pack cooling function will be triggered to cool the battery pack. The implementation of the battery pack cooling function requires a certain amount of electrical energy. Therefore, in order to save energy, the solution of this embodiment is to ensure that the temperature of the battery pack will not exceed the temperature threshold that triggers the cooling function during the charging process, and use this as a limiting condition to determine the charging power. Not only does it achieve a higher charging efficiency, it also protects the battery pack performance and avoids energy waste.

[0112] S830b: In response to the current ambient temperature being lower than the temperature threshold, the second target battery pack is slowly charged based on a strategy of dynamic change of charging power.

[0113] Based on the above embodiment, this embodiment further defines the above step S730b "in response to the current ambient temperature being lower than the temperature threshold, the second target battery pack is slowly charged based on a strategy of dynamic change of charging power". Fig. 9 As shown, the battery pack charging control method includes the following steps:

[0114] S910. Based on the predicted number of battery replacement demands in the next time period, determine a first target battery pack from multiple battery packs in the current time period.

[0115] S920. Fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period.

[0116] Wherein, the quantity of the first target battery packs is less than or equal to the predicted quantity.

[0117] S930a: In response to the current ambient temperature being higher than the temperature threshold, the second target battery pack is slowly charged based on a strategy of keeping the charging power constant.

[0118] S930b. In response to the current ambient temperature being lower than a temperature threshold, for the current second target battery pack, an allowable charging power is determined according to the current temperature of the current second target battery pack, and the current second target battery pack is charged according to the allowable charging power; during the charging process, the current temperature of the current second target battery pack is monitored in real time, and the allowable charging power is updated based on the monitored value of the current temperature.

[0119] It is understandable that if the current ambient temperature is low, the charging and discharging performance of the battery pack is also poor. At this time, in order to protect the battery pack from damage, a lower charging power should be selected to trickle charge the battery pack. As the charging progresses, the battery pack itself will heat up and the temperature of the battery pack will gradually increase. At this time, in order to take into account the charging efficiency, the charging power can be increased, thereby achieving a higher charging efficiency on the basis of protecting the battery pack.

[0120] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a battery pack charging device.

[0121] refer to Fig.10 The battery pack charging device includes: a determination module 1010 and a fast charging module 1020.

[0122] Among them, the determination module 1010 is used to determine the first target battery pack from multiple battery packs in the current time period based on the predicted number of battery replacement demands in the next time period; the fast charging module 1020 is used to fast charge the first target battery pack so that a predicted number of battery packs meet the battery replacement requirements before the end of the current time period; wherein the number of the first target battery packs is less than or equal to the predicted number.

[0123] Furthermore, the determination module 1010 includes: a first determination unit, used to determine a first number of battery packs whose remaining power reaches a power threshold among the multiple battery packs; a calculation unit, used to calculate a difference between the predicted number and the first number in response to the first number being less than the predicted value; and a second determination unit, used to determine, from the battery packs whose remaining power does not reach the power threshold, a number of battery packs whose number is the difference as the first target battery packs.

[0124] Furthermore, the second determination unit includes: a first determination subunit, used to determine, in order from most to least remaining power, a number of battery packs equal to the difference from the battery packs whose remaining power does not reach the power threshold as the first target battery packs; a prediction subunit, used to predict, with respect to the battery packs whose remaining power does not reach the power threshold, a charging time required for each battery pack to be charged from the remaining power to the power threshold; and a second determination subunit, used to determine, in order from short to long charging time, a number of battery packs equal to the difference from the battery packs as the first target battery packs.

[0125] Furthermore, the prediction subunit is specifically used to: input the remaining power of the battery pack, the power threshold, the charging power, and the temperature rise curve data of the battery pack during the charging process into the prediction model to obtain the charging time required for the battery pack to charge from the remaining power to the power threshold;

[0126] Alternatively, the difference between the power threshold and the remaining power of the battery pack is determined, and the ratio of the difference to the charging power is determined as the charging time required for charging the battery pack from the remaining power to the power threshold.

[0127] Furthermore, the battery pack charging device also includes: a slow charging module, which is used to slowly charge a second target battery pack that does not meet the battery replacement requirements except the first target battery pack.

[0128] Furthermore, the slow charging module includes: a first slow charging unit, used to respond to the current ambient temperature being higher than a temperature threshold, and to perform slow charging on a second target battery pack based on a strategy of constant charging power; a second slow charging unit, used to respond to the current ambient temperature being lower than a temperature threshold, and to perform slow charging on the second target battery pack based on a strategy of dynamic charging power change.

[0129] Furthermore, the first slow charging unit is specifically used to: for the current second target battery pack, determine the allowable temperature rise value according to the current temperature of the current second target battery pack and the temperature threshold that triggers the activation of the battery pack cooling function; use the allowable temperature rise value, the current ambient temperature and the current temperature of the current second target battery pack as query input information, determine the corresponding charging power from the charging parameter data relationship of the current second target battery pack, and charge the current second target battery pack according to the corresponding charging power until the remaining power of the current second target battery pack reaches the power threshold.

[0130] Furthermore, the second slow charging unit is specifically used to: for the current second target battery pack, determine the allowable charging power according to the current temperature of the current second target battery pack, and charge the current second target battery pack according to the allowable charging power; during the charging process, monitor the current temperature of the current second target battery pack in real time, and update the allowable charging power based on the monitored value of the current temperature.

[0131] For the convenience of description, the above device is described in terms of functions divided into various modules. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0132] The device of the above embodiment is used to implement the corresponding battery pack charging method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0133] For the convenience of description, the above device is described in terms of functions divided into various modules. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0134] The device of the above embodiment is used to implement the corresponding battery pack charging control method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0135] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a vehicle, which includes the battery pack charging control method device.

[0136] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the battery pack charging control method described in any of the above embodiments is implemented.

[0137] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the battery pack charging method described in any of the above embodiments is implemented.

[0138] Fig.11 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0139] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0140] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0141] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0142] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0143] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0144] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0145] The electronic device of the above-mentioned embodiment is used to implement the corresponding battery pack charging method in any of the above-mentioned embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0146] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the battery pack charging method described in any of the above embodiments.

[0147] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0148] The computer instructions stored in the storage medium of the above embodiments are used to enable the computer to execute the battery pack charging method described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0149] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0150] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0151] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0152] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A battery pack charging control method, characterized in that: include: Based on the predicted number of battery replacement demands in the next period, determine a first target battery pack from multiple battery packs in the current period; fast charging the first target battery pack so that a predicted number of battery packs meet the battery replacement requirement before the end of the current time period; Wherein, the quantity of the first target battery packs is less than or equal to the predicted quantity.

2. The battery pack charging control method according to claim 1, characterized in that: The step of determining a first target battery pack from a plurality of battery packs in a current time period based on the predicted number of battery replacement demands in the next time period includes: Determine a first number of battery packs among the plurality of battery packs whose remaining power reaches a power threshold; In response to the first number being smaller than the predicted value, calculating a difference between the predicted number and the first number; From the battery packs whose remaining power does not reach the power threshold, determine the battery packs whose number is the difference as the first target battery packs.

3. The battery pack charging control method according to claim 2, characterized in that: The step of determining the battery packs whose remaining power does not reach the power threshold as the first target battery packs, the number of which is the difference, includes: In descending order of remaining power, determine, from the battery packs whose remaining power does not reach the power threshold, the battery packs whose number is the difference as the first target battery packs; Alternatively, for battery packs whose remaining power does not reach the power threshold, predict the charging time required for each battery pack to charge from the remaining power to the power threshold, and determine the battery packs with the difference as the first target battery packs from each battery pack in order of charging time from short to long.

4. The battery pack charging control method according to claim 3, characterized in that: The predicting of the charging time required for each battery pack to charge from the remaining power to the power threshold includes: Inputting the remaining power of the battery pack, the power threshold, the charging power, and the temperature rise curve data of the battery pack during the charging process into the prediction model to obtain the charging time required for the battery pack to charge from the remaining power to the power threshold; Alternatively, the difference between the power threshold and the remaining power of the battery pack is determined, and the ratio of the difference to the charging power is determined as the charging time required for charging the battery pack from the remaining power to the power threshold.

5. The battery pack charging control method according to claim 1, characterized in that: Also includes: Slow charging is performed on the second target battery pack that does not meet the battery replacement requirements except the first target battery pack.

6. The battery pack charging control method according to claim 5, characterized in that: The slowly charging a second target battery pack other than the first target battery pack that does not meet the battery replacement requirement includes: In response to the current ambient temperature being higher than a temperature threshold, slow charging the second target battery pack based on a strategy of keeping the charging power constant; In response to the current ambient temperature being lower than the temperature threshold, the second target battery pack is slowly charged based on a strategy of dynamic change of charging power.

7. The battery pack charging control method according to claim 6, characterized in that: In response to the current ambient temperature being higher than the temperature threshold, the second target battery pack is slowly charged based on a strategy of keeping the charging power constant, including: For the current second target battery pack, determine the allowable temperature rise value according to the current temperature of the current second target battery pack and the temperature threshold for triggering the battery pack cooling function to be turned on; Using the allowable temperature rise value, the current ambient temperature and the current temperature of the current second target battery pack as query input information, determine the corresponding charging power from the charging parameter data relationship of the current second target battery pack, and charge the current second target battery pack according to the corresponding charging power until the remaining power of the current second target battery pack reaches the power threshold.

8. The battery pack charging control method according to claim 6, characterized in that: In response to the current ambient temperature being lower than the temperature threshold, the second target battery pack is slowly charged based on a strategy of dynamic change of charging power, including: For the current second target battery pack, determining an allowable charging power according to the current temperature of the current second target battery pack, and charging the current second target battery pack according to the allowable charging power; During the charging process, the current temperature of the second target battery pack is monitored in real time, and the allowed charging power is updated based on the monitored value of the current temperature.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the battery pack charging control method according to any one of claims 1 to 8 is implemented.

10. A battery swap station, characterized in that: The battery swap station comprises the electronic device as claimed in claim 9.

Images