Battery swap scheduling method, system and battery swap station

Abstract

The present invention relates to the field of battery swap scheduling technology, and provides a battery swap scheduling method, system, and battery swap station for scheduling universal battery units within a battery swap station; universal battery units are used to power vehicles individually or in combination, and the method includes: grouping the universal battery units within the battery swap station based on the health status and charge status of the universal battery units; and allocating one or more universal battery units belonging to the same group to the vehicle based on the vehicle's battery swap needs, for battery swapping of the vehicle. The present invention is intended to solve the defects in the prior art of uneven battery usage frequency in battery swap stations caused by different vehicles using batteries that are not exactly the same, and the inability to provide battery swap services for vehicles using larger capacity batteries, thereby realizing battery swap scheduling based on universal battery units, thereby avoiding uneven battery usage frequency within battery swap stations, and being able to provide battery swap services for a variety of vehicles.

Description

Technical Field

[0001] The present invention relates to the field of battery swap scheduling technology, and in particular to a battery swap scheduling method, system and battery swap station. Background Art

[0002] With technological innovation and development, the energy density and power density of batteries have also increased. However, long battery life is accompanied by increased charging time, which can result in a poor customer experience. The emergence and application of the battery swap model precisely meets customer needs. The application of the battery swap model not only maintains real-time monitoring of the vehicle and battery, but also ensures constant temperature charging, dynamic inspection, full control of the charging environment, and comprehensive information monitoring during the battery swap, all of which are conducive to improving battery life.

[0003] Currently, battery swapping systems for passenger cars and commercial vehicles are relatively well-established, but their application in construction machinery is limited. The greater the power demand, the heavier the battery swapping system. For example, medium-sized electric excavators require 400-600 kWh of power, while large excavators require 600-1000 kWh. A 400 kWh battery system weighs approximately 5 tons. Therefore, when battery swapping is performed on construction machinery, the requirements for battery swapping equipment and devices, such as robotic arms and forklifts, are significantly increased, severely limiting its application scenarios.

[0004] At the same time, the capacity and volume of batteries used in vehicles of different models and manufacturers are not necessarily the same, which requires the configuration of multiple batteries in the battery swap station. On the one hand, this increases the cost investment. On the other hand, due to the different vehicles that usually operate around the battery swap station, the frequency of battery usage in the battery swap station will be uneven, and even cause congestion in the battery swap station due to shortage of some batteries, while some batteries are idle and wasted. Summary of the Invention

[0005] The present invention provides a battery swap scheduling method, system and battery swap station, which are used to solve the defects in the prior art that the battery usage frequency in the battery swap station is uneven due to the fact that the batteries used by different vehicles are not exactly the same, and the battery swap service cannot be provided for vehicles using batteries with larger capacity. The method realizes battery swap scheduling based on universal battery units, thereby avoiding the uneven battery usage frequency in the battery swap station and providing battery swap services for multiple vehicles.

[0006] The present invention provides a battery swap scheduling method for scheduling universal battery units in a battery swap station; the universal battery units are used to power vehicles individually or in combination, wherein the method comprises:

[0007] grouping the universal battery cells within the battery swap station based on the health status and state of charge of the universal battery cells;

[0008] Based on the battery replacement requirements of the vehicle, one or more universal battery units belonging to the same group are allocated to the vehicle for battery replacement of the vehicle.

[0009] According to the battery swap scheduling method of the present invention, grouping the universal battery cells in the battery swap station based on the health status and charge status of the universal battery cells includes:

[0010] Based on the state of charge, the universal battery cells are divided into a charging group and a fully charged group;

[0011] Based on the health status, the common battery cells in the fully charged group are divided into multiple levels of battery replacement groups.

[0012] According to the battery swap scheduling method of the present invention, the multiple levels of battery swap groups include a cascade utilization group and a fully charged battery swap group; the universal battery cells in the cascade utilization group are used to store energy and / or swap batteries for vehicles with a power demand less than a set power value; the universal battery cells in the fully charged battery swap group are used to swap batteries for vehicles with a power demand greater than or equal to the set power value;

[0013] Based on the health status, the fully charged group is divided into multiple levels of battery swap groups, including:

[0014] Classifying the general battery cells whose health status is less than a preset health status lower limit into the cascade utilization group;

[0015] The general battery cells whose health status is greater than or equal to the preset health status lower limit and falls within the same preset threshold range are divided into the same fully charged battery replacement group.

[0016] The battery swap scheduling method according to the present invention further includes:

[0017] Based on the health status from high to low, the general battery cells in the cascade utilization group and the fully charged battery replacement group are sorted respectively.

[0018] The battery swap scheduling method according to the present invention further includes:

[0019] For the universal battery cells in the cascade utilization group or the fully charged battery replacement group, the arrangement order of the universal battery cells in the same health state is determined based on the order of the internal resistance of the universal battery cells from small to large, and the sequence order of the universal battery cells in each group is obtained;

[0020] Based on the sequence order, one or more universal battery cells belonging to the same group are allocated to the vehicle for battery replacement of the vehicle.

[0021] According to the battery swap scheduling method of the present invention, the battery swap demand of the vehicle includes a single-pack battery swap demand and a multi-pack battery swap demand;

[0022] The allocating one or more universal battery units belonging to the same group to the vehicle based on the battery replacement demand of the vehicle for battery replacement of the vehicle includes:

[0023] Based on the single-pack battery replacement demand of the vehicle, one universal battery unit is allocated from the fully charged battery group to be replaced, which only contains one universal battery unit, for battery replacement of the vehicle;

[0024] Based on the vehicle's multi-pack battery replacement needs, a corresponding number of universal battery cells are allocated to the vehicle for battery replacement based on the sorting order from the fully charged battery replacement group that includes at least the number of universal battery cells required by the vehicle.

[0025] According to the battery swap scheduling method of the present invention, grouping the universal battery cells in the battery swap station based on the health status and charge status of the universal battery cells further includes:

[0026] The universal battery cells in the battery swap station are grouped based on any one of the internal resistance, capacity, diaphragm thickness, and pressure difference of the universal battery cells and the state of charge.

[0027] The present invention also provides a battery swap scheduling system for scheduling universal battery units in a battery swap station; the universal battery units are used to power vehicles individually or in combination, wherein the system includes:

[0028] a grouping module, configured to group the universal battery cells in the battery swap station based on the health status and the state of charge of the universal battery cells;

[0029] A scheduling module is used to allocate one or more universal battery units belonging to the same group to the vehicle based on the battery replacement requirements of the vehicle for battery replacement of the vehicle.

[0030] The present invention also provides a battery swap station, comprising: a universal battery unit and a battery swap dispatching system as described above for dispatching the universal battery unit;

[0031] The universal battery units are used to power the vehicle individually or in combination.

[0032] The present invention also provides an electronic device, comprising 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 swap scheduling method as described above is implemented.

[0033] The present invention provides a battery replacement scheduling method, system and battery replacement station. By scheduling universal battery units in the battery replacement station, and the universal battery units are used to power vehicles individually or in combination, on the one hand, it not only enables vehicles with large power demands to be powered based on a combination of multiple universal battery units, but also makes battery replacement for vehicles with large power demands possible. On the other hand, the development cycle of universal battery units is short, the cost is low, and the compatibility is good, which effectively avoids the trouble of configuring multiple batteries in the battery replacement station and realizes the provision of battery replacement services for multiple vehicles.

[0034] By grouping the universal battery cells in the battery swap station based on their health status and state of charge, and then allocating one or more universal battery cells in the same group to the vehicle for battery swap based on the vehicle's battery swap needs, it is ensured that the health status of the universal battery cells swapped on the same vehicle is relatively consistent, thereby reducing the phenomenon that one universal battery cell in the vehicle's battery system is fully discharged while other universal battery cells still have power, and ensuring full utilization of the battery system's power. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 This is a flow chart of a battery swap scheduling method provided by the present invention;

[0037] Figure 2 This is a flow chart of an example of battery swap scheduling using the battery swap scheduling method provided by the present invention;

[0038] Figure 3 This is a structural diagram of a battery swap scheduling system provided by the present invention;

[0039] Figure 4 This is a structural diagram of a battery swap station provided by the present invention;

[0040] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention;

[0041] Reference numerals:

[0042] 1: Charging cabinet; 2: Battery replacement base; 3: Station control system; 4: Reserved battery replacement base; 5: Battery replacement station. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0044] It should be noted that passenger car battery replacement uses a single battery replacement system with a capacity of 60-100 kWh and a weight of 350-700 kg. It can be positioned and replaced by a robotic arm or AGV cart; commercial heavy-duty truck battery replacement also uses a single battery replacement system with a capacity of about 282 kWh and a weight of about 2.5 tons. Commercial heavy-duty trucks can enter the battery replacement station for battery replacement, and a robotic arm is used to grab and place them during the battery replacement process.

[0045] For some construction machinery, charging is inconvenient due to the harsh working environment. At the same time, for example, medium and large excavators have large power demands and long charging times. Therefore, the application of battery swapping mode in construction machinery is an inevitable trend.

[0046] Meanwhile, taking electric excavators as an example, medium-sized excavators require 400-600 kWh of electricity, while large excavators require 600-1000 kWh. Currently, both are powered by a single battery system. However, a 400 kWh battery swap system weighs approximately 5 tons. The greater the capacity, the heavier the system, placing higher demands on battery swap equipment and devices such as robotic arms and forklifts. Consequently, current battery swap equipment and devices are not suitable for battery swapping in construction machinery, limiting its application scenarios. Furthermore, the fact that battery systems vary across manufacturers and models also limits the application of battery swap stations.

[0047] Based on this, an embodiment of the present invention provides a battery replacement scheduling method for scheduling universal battery cells. By grouping the universal battery cells and then providing the vehicle with universal battery cells belonging to the same group for battery replacement according to the vehicle's battery replacement needs, the battery replacement application scenarios are expanded and the full utilization of the battery system's electrical energy is ensured.

[0048] To facilitate understanding of the solutions described in the embodiments of the present invention, the technical terms used in the present invention are first explained:

[0049] State of Health (SOH): This indicator characterizes a battery's ability to store energy relative to a new battery. It expresses the battery's state from the beginning to the end of its life as a percentage, and is used to quantitatively describe the battery's current performance. While there are many battery performance indicators, the current definition of SOH primarily focuses on capacity, charge, internal resistance, cycle count, and peak power.

[0050] State of charge (SOC): Indicates the available state of the remaining charge in the battery, usually expressed as a percentage.

[0051] The following combination Figure 1 and Figure 2 A battery swap scheduling method of the present invention is described, which is executed based on the station control system of the battery swap station and / or the software or hardware therein, such as Figure 1 As shown, the battery swap scheduling method according to an embodiment of the present invention is used for scheduling universal battery units in a battery swap station; the universal battery units are used to power vehicles individually or in combination, wherein the method includes the following steps:

[0052] 101. Group the universal battery cells in the battery swap station based on the health status and charge status of the universal battery cells;

[0053] 102. Based on the battery replacement demand of the vehicle, one or more universal battery units belonging to the same group are allocated to the vehicle for battery replacement of the vehicle.

[0054] Specifically, the universal battery units are dispatched through the station control system, and the vehicles are powered by a single universal battery unit or a combination of multiple universal battery units. This allows the battery swap station to be equipped with only a certain number of universal battery units to provide battery swap services for different vehicles, greatly expanding the application scenarios of the battery swap station. At the same time, for engineering machinery with a large demand for electricity, power supply can be achieved by arranging multiple universal battery units together. For example, if the power of a single universal battery unit is set to 200 kWh, then for a vehicle with a power demand of 400 kWh, two universal battery units can be connected in parallel to achieve a power supply of 400 kWh for the vehicle. By using five universal battery units in parallel, a power supply of 1000 kWh can be achieved for the vehicle. This is not only conducive to the platform-based, standardized, and unified development of the battery system, but also conducive to the derivative nature of the product, which shortens the development cycle accordingly. At the same time, it facilitates the rapid promotion of charging piles and new energy products.

[0055] It is understandable that each universal battery cell has its own SOH. For vehicles powered by a combination of multiple universal battery cells, when the vehicle is replacing batteries, if the SOHs of the deployed universal battery cells are inconsistent, then in power consumption modes such as vehicle operation and driving, the universal battery cells with lower SOH will be exhausted, while the universal battery cells with higher SOH will still have sufficient power. As a result, the universal battery cells with lower SOH will be damaged by over-discharge, or the power of other universal battery cells with higher SOH will not be fully utilized. This will cause the entire battery replacement system to experience a "barrel effect", in which the battery system's energy cannot be fully utilized.

[0056] It is understandable that when the SOC of the common battery cells that make up the battery system are inconsistent, it may cause a battery cell to be over-discharged or a battery cell to be incompletely discharged. When the SOC of a battery cell is less than 100%, the battery cell is not fully charged and should continue to be charged rather than used for battery replacement.

[0057] More specifically, while the universal battery cells are charging in the battery swap station, the station control system can obtain the SOH and SOC of the universal battery cells based on the battery system traceability code and related information uploaded by the battery management system BMS of each universal battery cell. Afterwards, the universal battery cells in the battery swap station are grouped based on the SOH and SOC of the universal battery cells. Then, based on the battery swap needs of the vehicle, one or more universal battery cells that are in a fully charged state and belong to the same group are allocated to the vehicle for battery swap. This can ensure that the SOH of the universal battery cells swapped on the same vehicle tends to be consistent, which facilitates unified battery management and deployment on vehicles with battery swap needs, and makes full use of the energy and capacity of each battery system as much as possible while ensuring the safety of the battery system.

[0058] As an embodiment of the present invention, grouping the universal battery cells in the battery swap station based on the health status and the state of charge of the universal battery cells includes:

[0059] Based on the state of charge, the universal battery cells are divided into a charging group and a fully charged group;

[0060] Based on the health status, the common battery cells in the fully charged group are divided into multiple levels of battery replacement groups.

[0061] Specifically, when SOC=100%, it means that the universal battery cell is fully charged, and when SOC<100%, it means that the universal battery cell is still not fully charged and is not suitable for battery replacement, but needs to continue charging. Therefore, based on SOC, the universal battery cell can be divided into a charging group that needs to continue charging and a fully charged group that can be used for battery replacement; at the same time, each universal battery cell has its own SOH. When the SOH of the universal battery cells on the whole vehicle differs too much, the battery system of the whole vehicle will experience a "barrel effect", resulting in the energy of the battery system not being fully utilized. Therefore, based on the SOH of each universal battery cell, the universal battery cells with relatively consistent SOH in the fully charged group are divided into a hierarchical battery replacement group, that is, the universal battery cells in the fully charged group are divided into multiple hierarchical battery replacement groups according to the size of the SOH. When the vehicle has a battery replacement demand, the universal battery cells for battery replacement can be allocated to the vehicle in the same hierarchical battery replacement group based on the battery replacement demand of the vehicle, thereby avoiding excessive differences in the health status of the universal battery cells in the battery system of the whole vehicle after the battery replacement.

[0062] As an embodiment of the present invention, the multiple levels of battery swap groups include a cascade utilization group and a fully charged battery swap group; the universal battery cells in the cascade utilization group are used to store energy and / or swap batteries for vehicles with a power demand less than a set power value; the universal battery cells in the fully charged battery swap group are used to swap batteries for vehicles with a power demand greater than or equal to the set power value;

[0063] Based on the health status, the fully charged group is divided into multiple levels of battery swap groups, including:

[0064] Classifying the general battery cells whose health status is less than a preset health status lower limit into the cascade utilization group;

[0065] The general battery cells whose health status is greater than or equal to the preset health status lower limit and falls within the same preset threshold range are divided into the same fully charged battery replacement group.

[0066] Understandably, commercial vehicles require more power than passenger vehicles, and construction machinery like medium and large excavators also require more power than commercial vehicles. A battery's state of health (SOH) directly impacts its discharge duration. For batteries with the same SOH, a passenger vehicle's battery life is longer than a commercial vehicle's. Using a battery with a low SOH in a vehicle with high power requirements can severely impact the vehicle's range, impacting the user experience.

[0067] Specifically, by setting a preset SOH lower limit, general-purpose battery cells with an SOH lower limit are then divided into a cascade utilization group. That is, general-purpose battery cells with poor SOH are used for energy storage and / or battery replacement for vehicles with power requirements less than the set value, thereby avoiding defects such as short driving time and insufficient energy when general-purpose battery cells with poor SOH are used in vehicles with higher power requirements.

[0068] It is understandable that the set power value can be flexibly set as needed, thereby grading vehicles with different power requirements. Furthermore, by reasonably setting the power of the universal battery unit, the universal battery unit can be used in electric bicycles, mobility scooters, passenger cars, commercial vehicles, and construction machinery, and then the electric bicycles, mobility scooters, passenger cars, commercial vehicles, etc. can be graded by setting the power value, that is, the universal battery units in the cascade utilization group are used to replace or store electricity for electric bicycles and mobility scooters. And the universal battery units with SOH greater than or equal to the preset SOH lower limit are used to replace electricity for passenger cars, commercial vehicles, etc.

[0069] More specifically, by setting a preset threshold interval, the universal battery cells with an SOH greater than or equal to the preset SOH lower limit are further grouped, that is, the universal battery cells falling into the same preset threshold interval are divided into the same fully charged battery replacement group. This ensures that the SOH of the universal battery cells in the same fully charged battery replacement group is similar, which can effectively reduce the "barrel effect" of the vehicle battery system when using multiple universal battery cells for whole vehicle battery replacement.

[0070] Furthermore, for the universal battery cells in the cascade utilization group, the threshold interval can also be set to group the universal battery cells, so that the universal battery cells with relatively better SOH in the cascade utilization group are given priority for battery replacement in elderly scooters, while the universal battery cells with the second best SOH are used for battery replacement in electric bicycles, and the universal battery cells with the third best SOH are used for recycling or scrapping, etc., thereby further improving the utilization efficiency of the universal battery cells and improving the user experience.

[0071] It should be noted that the preset threshold interval can be flexibly set as needed. For example, the SOH difference between adjacent preset threshold intervals is set to 2%, 3%, etc. Taking 2% as an example, the general battery cells with SOH between 90%-92% (excluding 92%) are divided into the same fully charged group waiting for replacement, and the general battery cells with SOH between 92%-94% (excluding 94%) are divided into the same fully charged group waiting for replacement, etc. No specific limitation is made here.

[0072] As an embodiment of the present invention, the battery swap scheduling method further includes:

[0073] Based on the health status from high to low, the general battery cells in the cascade utilization group and the fully charged battery replacement group are sorted respectively.

[0074] Specifically, by sorting the universal battery cells in the cascade utilization group and the fully charged battery replacement group from high to low based on SOH, on the one hand, the station control system can give priority to universal battery cells with better SOH to provide battery replacement services for vehicles, so as to improve the user experience. On the other hand, when combined with the grouping of hierarchical battery replacement groups, it also enables the station control system to select universal battery cells with adapted SOH for battery replacement according to the battery replacement needs of different vehicles. For example: when the vehicle that issues the battery replacement request is a large excavator, the station control system, according to the sorting of the universal battery cells in the group, allocates the universal battery cells in the fully charged battery replacement group with the highest SOH in the current battery replacement station for battery replacement for the large excavator; when the vehicle that issues the battery replacement request is an electric bicycle, the station control system, according to the sorting of the universal battery cells in the group, allocates the universal battery cells in the cascade utilization group with the smaller SOH in the current battery replacement station for battery replacement for the electric bicycle.

[0075] As an embodiment of the present invention, the battery swap scheduling method further includes:

[0076] For the universal battery cells in the cascade utilization group or the fully charged battery replacement group, the arrangement order of the universal battery cells in the same health state is determined based on the order of the internal resistance of the universal battery cells from small to large, and the sequence order of the universal battery cells in each group is obtained;

[0077] Based on the sequence order, one or more universal battery cells belonging to the same group are allocated to the vehicle for battery replacement of the vehicle.

[0078] Specifically, internal resistance is a key technical indicator for measuring battery performance. Under normal circumstances, batteries with low internal resistance have strong high-current discharge capabilities, while batteries with high internal resistance have weaker discharge capabilities. The lower the internal resistance, the less energy is wasted. For universal battery cells with equal SOH, determining the order of arrangement based on their internal resistance (SOR) ensures that relatively better-performing universal battery cells are placed first.

[0079] More specifically, by allocating one or more universal battery units belonging to the same group to the vehicle based on the sequence order for vehicle battery replacement, the station control system can give priority to universal battery units with better performance to provide battery replacement services for the vehicle, thereby improving the user experience.

[0080] As an embodiment of the present invention, the battery replacement demand of the vehicle includes a single-pack battery replacement demand and a multi-pack battery replacement demand;

[0081] The allocating one or more universal battery units belonging to the same group to the vehicle based on the battery replacement demand of the vehicle for battery replacement of the vehicle includes:

[0082] Based on the single-pack battery replacement demand of the vehicle, one universal battery unit is allocated from the fully charged battery group to be replaced, which only contains one universal battery unit, for battery replacement of the vehicle;

[0083] Based on the vehicle's multi-pack battery replacement needs, a corresponding number of universal battery cells are allocated to the vehicle for battery replacement based on the sorting order from the fully charged battery replacement group that includes at least the number of universal battery cells required by the vehicle.

[0084] Specifically, for universal battery cells grouped based on their SOH, it is possible that the SOH difference between a particular universal battery cell and the other universal battery cells is greater than the difference between the preset SOH thresholds, meaning that a fully charged battery replacement group contains only one universal battery cell. Similarly, different vehicles require different amounts of power; some require only one universal battery cell, while others require a combination of multiple universal battery cells. It is understandable that for the battery replacement demand of vehicles that only need one universal battery unit for power supply, that is, the single-pack battery replacement demand, the station control system deploys the universal battery units in the fully charged battery replacement group containing only one universal battery unit for battery replacement, which can not only meet the battery replacement demand of the vehicle, but also does not affect the battery replacement of other vehicles. Because, if one universal battery unit in the fully charged battery replacement group containing two universal battery units is deployed for battery replacement, there is still one universal battery unit left in the fully charged battery replacement group. If another vehicle powered by two universal battery units issues a battery replacement request at this time, the station control system also needs to deploy the universal battery units in other fully charged battery replacement groups containing at least two universal battery units for vehicle battery replacement. This scheduling method may face the situation where there is no fully charged battery replacement group containing only two universal battery units in the battery replacement station at this time, and the universal battery units in the fully charged battery replacement group containing more than two universal battery units need to be deployed for battery replacement, which in turn affects the battery replacement demand of vehicles powered by a combination of more than two universal battery units. At the same time, when there is no other vehicle powered by a single universal battery cell that issues a battery replacement request, the other universal battery cell in the fully charged battery replacement group that originally contained two universal battery cells is idle.

[0085] More specifically, based on the vehicle's single-pack battery replacement demand, one universal battery cell is allocated from the fully charged battery replacement group containing only one universal battery cell for battery replacement of the vehicle; and based on the vehicle's multi-pack battery replacement demand, from the fully charged battery replacement group containing at least the number of universal battery cells required by the vehicle, a corresponding number of universal battery cells are allocated to the vehicle based on the sorting order for battery replacement of the vehicle, so that the universal battery cells in the battery replacement station are fully utilized.

[0086] As an embodiment of the present invention, grouping the universal battery cells in the battery swap station based on the health status and the state of charge of the universal battery cells further includes:

[0087] The universal battery cells in the battery swap station are grouped based on any one of the internal resistance, capacity, diaphragm thickness, and pressure difference of the universal battery cells and the state of charge.

[0088] Specifically, the universal battery cells in the battery swap station are grouped so that when a vehicle needs to swap batteries, the universal battery cells in the same group can be allocated to the vehicle for battery swap, so as to ensure that the health status of each universal battery cell in the vehicle is basically the same, that is, the battery life is basically the same.

[0089] It's understandable that the internal resistance, capacity, diaphragm thickness, and differential pressure of a universal battery cell are all parameters that reflect the performance of the universal battery cell. A greater internal resistance results in greater energy waste during discharge, which translates to shorter battery life. A smaller capacity results in shorter battery life. A thicker diaphragm thickness also results in shorter battery life. A greater differential pressure also results in shorter battery life. Therefore, grouping universal battery cells based on any of their internal resistance, capacity, diaphragm thickness, and differential pressure, along with their state of charge, can also achieve grouping based on their battery life.

[0090] More specifically, SOH is a parameter that reflects the performance of a universal battery cell. Internal resistance, capacity, diaphragm thickness, pressure difference, etc. all have a certain impact on SOH. SOH comprehensively reflects the performance of the battery based on multiple performance parameters. Therefore, grouping universal battery cells based on SOH and state of charge can further ensure that the battery life of universal battery cells in the same group is basically the same, compared with grouping by internal resistance, pressure difference, etc., and is more conducive to battery replacement scheduling, avoiding the "barrel effect" after battery replacement in vehicles that are powered by a combination of multiple universal battery cells.

[0091] The following takes the preset lower limit of the health state as 80% and the difference between adjacent preset threshold intervals as 2% as an example to further illustrate the battery swap scheduling process of the battery swap scheduling method described in the above embodiment of the present invention. Figure 2 As shown, the following steps are included:

[0092] 201. Based on the battery traceability code and relevant information of the battery, obtain the SOH and SOC of the general battery unit;

[0093] 202. Determine whether the SOC of the universal battery unit is less than 100%; if so, proceed to step 203; if not, proceed to step 204;

[0094] 203. General-purpose battery cells with SOC < 100% are assigned to the charging group;

[0095] 204. The general battery cell with SOC=100% is classified into the fully charged group;

[0096] 205. Determine whether the SOH of the common battery cells in the fully charged group is less than 80%; if so, proceed to step 206; if not, proceed to step 207;

[0097] 206. General-purpose battery cells with SOH < 80% will be classified into the cascade utilization group;

[0098] 207. Assign common battery cells with SOH ≥ 80% and SOH difference not exceeding 2% to the same fully charged battery replacement group;

[0099] 208. Determine whether the fully charged battery pack to be replaced contains only one universal battery unit; if so, proceed to step 209; if not, proceed to step 210;

[0100] 209. A fully charged battery pack to be replaced that contains only one universal battery unit is defined as a single-pack battery pack to be replaced;

[0101] 210. A fully charged battery pack to be replaced containing at least two universal battery units is defined as a multi-pack battery pack to be replaced;

[0102] 211. Obtain the vehicle's battery replacement requirements;

[0103] 212. Determine whether the vehicle's power demand is less than the set power value based on the battery replacement demand; if so, proceed to step 213; if not, proceed to step 214;

[0104] 213. Deploy universal battery cells from the cascade utilization group for battery replacement in vehicles;

[0105] 214. Determine whether the battery replacement demand is a single-pack battery replacement demand; if so, proceed to step 215; if not, proceed to step 216;

[0106] 215. Deploy universal battery cells from a single pack of battery replacement units for battery replacement in vehicles;

[0107] 216. Allocate a corresponding number of universal battery cells from multiple packs of battery replacement kits for battery replacement in vehicles.

[0108] The following describes a battery swap scheduling system provided by the present invention. The battery swap scheduling system described below and the battery swap scheduling method described above can be referenced to each other.

[0109] The present invention provides a battery swap scheduling system such as Figure 3 As shown, it is used for scheduling universal battery units in a battery swap station; the universal battery units are used to power vehicles individually or in combination, wherein the system includes: a grouping module 310 and a scheduling module 320; wherein,

[0110] The grouping module 310 is used to group the universal battery cells in the battery swap station based on the health status and charge status of the universal battery cells;

[0111] The scheduling module 320 is used to allocate one or more universal battery units belonging to the same group to the vehicle based on the battery replacement requirements of the vehicle for battery replacement of the vehicle.

[0112] The battery swap scheduling system described in the embodiment of the present invention schedules universal battery units in the battery swap station, and the universal battery units are used to power vehicles individually or in combination. On the one hand, it not only enables vehicles with large power demands to be powered based on a combination of multiple universal battery units, but also makes battery swapping for vehicles with large power demands possible. On the other hand, the development cycle of universal battery units is short, the cost is low, and the compatibility is good, which effectively avoids the trouble of configuring multiple batteries at the battery swap station and realizes the provision of battery swap services for multiple vehicles.

[0113] By grouping the universal battery cells in the battery swap station based on their health status and state of charge, and then allocating one or more universal battery cells in the same group to the vehicle for battery swap based on the vehicle's battery swap needs, it is ensured that the health status of the universal battery cells swapped on the same vehicle is relatively consistent, thereby reducing the phenomenon that one universal battery cell in the vehicle's battery system is fully discharged while other universal battery cells still have power, and ensuring full utilization of the battery system's power.

[0114] Preferably, the grouping module is specifically used to divide the universal battery cells into charging groups and fully charged groups based on the state of charge; and to divide the universal battery cells in the fully charged group into multiple levels of battery replacement groups based on the health status.

[0115] Preferably, the multiple levels of battery swap groups include a cascade utilization group and a fully charged battery swap group; the universal battery cells in the cascade utilization group are used to store energy and / or swap batteries for vehicles with a power demand less than a set power value; the universal battery cells in the fully charged battery swap group are used to swap batteries for vehicles with a power demand greater than or equal to the set power value;

[0116] The grouping module is further used to classify the general battery cells whose health status is less than the preset health status lower limit into the cascade utilization group; and to classify the general battery cells whose health status is greater than or equal to the preset health status lower limit and falls within the same preset threshold range into the same fully charged battery replacement group.

[0117] Preferably, the battery swap scheduling system further includes: an arrangement module;

[0118] The arrangement module is used to sort the common battery cells in the cascade utilization group and the fully charged battery replacement group based on the health status from high to low.

[0119] Preferably, the arrangement module is further used to determine the arrangement order of the universal battery cells with the same health status in the cascade utilization group or the fully charged battery replacement group based on the order of the internal resistance of the universal battery cells from small to large, and obtain the sequence order of the universal battery cells in each group; based on the sequence order, one or more universal battery cells belonging to the same group are allocated to the vehicle for battery replacement of the vehicle.

[0120] Preferably, the battery replacement demand of the vehicle includes a single-pack battery replacement demand and a multi-pack battery replacement demand;

[0121] The scheduling module is specifically used to allocate one universal battery cell from the fully charged battery replacement group containing only one universal battery cell for battery replacement of the vehicle based on the single-pack battery replacement demand of the vehicle; and to allocate a corresponding number of universal battery cells for battery replacement of the vehicle based on the sorting order from the fully charged battery replacement group containing at least the number of universal battery cells required by the vehicle based on the multi-pack battery replacement demand of the vehicle.

[0122] Preferably, the grouping module is further used to group the universal battery cells in the battery swap station based on any one of the internal resistance, capacity, diaphragm thickness, and pressure difference of the universal battery cells and the state of charge.

[0123] The present invention also provides a battery swap station, comprising: a universal battery unit and a battery swap dispatching system as described above for dispatching the universal battery unit;

[0124] The universal battery units are used to power the vehicle individually or in combination.

[0125] Specifically, the structure of the battery swap station according to the embodiment of the present invention is as follows: Figure 4As shown, it includes: a charging cabinet 1, a battery swap base 2, a station control system 3, and a reserved battery swap base 4. Among them, the station control system 3 is pre-installed with the battery swap scheduling system as described in the above embodiment. The universal battery unit with low power enters the battery swap station 5 and is placed on the battery swap unit base 2 for charging. The station control system 3 sends a command to the charging cabinet 1 to start the charging process. During the charging process, the BMS reports the battery traceability code and related information to the station control system, and the station control system groups and dispatches based on the SOH and SOC of the universal battery unit.

[0126] It can be understood that the battery swap station including the universal battery unit and the battery swap scheduling system as described in the above embodiment for scheduling the universal battery unit has all the advantages and technical effects of the battery swap scheduling system, which will not be repeated here.

[0127] Figure 5 An example of a physical structure diagram of an electronic device is shown below. Figure 5 As shown, the electronic device may include: a processor (processor) 510, a communication interface (Communications Interface) 520, a memory (memory) 530 and a communication bus 540, wherein the processor 510, the communication interface 520, and the memory 530 communicate with each other through the communication bus 540. The processor 510 can call the logic instructions in the memory 530 to execute a battery swap scheduling method for scheduling universal battery cells in a battery swap station; the universal battery cells are used to power vehicles individually or in combination, and the method includes: grouping the universal battery cells in the battery swap station based on the health status and charge status of the universal battery cells; and allocating one or more universal battery cells belonging to the same group to the vehicle based on the battery swap demand of the vehicle for battery swapping of the vehicle.

[0128] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0129] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by the computer, the computer can execute a battery replacement scheduling method provided by the above methods, which is used for scheduling universal battery units in a battery replacement station; the universal battery units are used to power vehicles individually or in combination, and the method includes: grouping the universal battery units in the battery replacement station based on the health status and charge status of the universal battery units; based on the battery replacement needs of the vehicle, allocating one or more universal battery units belonging to the same group to the vehicle for battery replacement of the vehicle.

[0130] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a battery replacement scheduling method for scheduling universal battery units in a battery replacement station; the universal battery units are used to power vehicles individually or in combination, and the method includes: grouping the universal battery units in the battery replacement station based on the health status and charge status of the universal battery units; and allocating one or more universal battery units belonging to the same group to the vehicle based on the battery replacement needs of the vehicle for battery replacement of the vehicle.

[0131] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0132] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A battery swap scheduling method, characterized in that: The method is used for dispatching universal battery units in a battery swap station; the universal battery units are used to power vehicles individually or in combination, wherein the method includes: grouping the universal battery cells within the battery swap station based on the health status and state of charge of the universal battery cells; Based on the battery replacement demand of the vehicle, deploying one or more universal battery units belonging to the same group for the vehicle for battery replacement of the vehicle; The grouping of the universal battery cells in the battery swap station based on the health status and the state of charge of the universal battery cells includes: Based on the state of charge, the universal battery cells are divided into a charging group and a fully charged group; Based on the health status, the universal battery cells in the fully charged group are divided into a plurality of level-by-level battery swap groups; The multiple levels of battery swap groups include a cascade utilization group and a fully charged battery swap group; the universal battery cells in the cascade utilization group are used to store energy and / or swap batteries for vehicles with a power demand less than a set power value; the universal battery cells in the fully charged battery swap group are used to swap batteries for vehicles with a power demand greater than or equal to the set power value; The method of dividing the universal battery cells in the fully charged group into multiple level battery swap groups based on the health status includes: Classifying the general battery cells whose health status is less than a preset health status lower limit into the cascade utilization group; The general battery cells whose health status is greater than or equal to the preset health status lower limit and falls within the same preset threshold range are divided into the same fully charged battery replacement group; The method further comprises: Sort the common battery cells in the cascade utilization group and the fully charged battery replacement group respectively based on the health status from high to low; The method further comprises: For the universal battery cells in the cascade utilization group or the fully charged battery replacement group, the arrangement order of the universal battery cells in the same health state is determined based on the order of the internal resistance of the universal battery cells from small to large, and the sequence order of the universal battery cells in each group is obtained; Based on the sequence order, one or more universal battery cells belonging to the same group are allocated to the vehicle for battery replacement of the vehicle.

2. The battery swap scheduling method according to claim 1, characterized in that: The battery replacement demand of the vehicle includes single-pack battery replacement demand and multi-pack battery replacement demand; The allocating one or more universal battery units belonging to the same group to the vehicle based on the battery replacement demand of the vehicle for battery replacement of the vehicle includes: Based on the single-pack battery replacement demand of the vehicle, one universal battery unit is allocated from the fully charged battery group to be replaced, which only contains one universal battery unit, for battery replacement of the vehicle; Based on the vehicle's multi-pack battery replacement needs, a corresponding number of universal battery cells are allocated to the vehicle for battery replacement based on the sorting order from the fully charged battery replacement group that includes at least the number of universal battery cells required by the vehicle.

3. The battery swap scheduling method according to any one of claims 1 to 2, characterized in that: The grouping of the universal battery cells in the battery swap station based on the health status and the state of charge of the universal battery cells further includes: The universal battery cells in the battery swap station are grouped based on any one of the internal resistance, capacity, diaphragm thickness, and pressure difference of the universal battery cells and the state of charge.

4. A battery swap scheduling system, characterized in that: Used for dispatching universal battery units within a battery swap station; the universal battery units are used to power vehicles individually or in combination, wherein the system includes: a grouping module, configured to group the universal battery cells in the battery swap station based on the health status and the state of charge of the universal battery cells; a scheduling module, configured to allocate one or more universal battery units belonging to the same group to the vehicle for battery replacement based on the battery replacement demand of the vehicle; The grouping of the universal battery cells in the battery swap station based on the health status and the state of charge of the universal battery cells includes: Based on the state of charge, the universal battery cells are divided into a charging group and a fully charged group; Based on the health status, the universal battery cells in the fully charged group are divided into a plurality of level-by-level battery swap groups; The multiple levels of battery swap groups include a cascade utilization group and a fully charged battery swap group; the universal battery cells in the cascade utilization group are used to store energy and / or swap batteries for vehicles with a power demand less than a set power value; the universal battery cells in the fully charged battery swap group are used to swap batteries for vehicles with a power demand greater than or equal to the set power value; The method of dividing the universal battery cells in the fully charged group into multiple level battery swap groups based on the health status includes: Classifying the general battery cells whose health status is less than a preset health status lower limit into the cascade utilization group; The general battery cells whose health status is greater than or equal to the preset health status lower limit and falls within the same preset threshold range are divided into the same fully charged battery replacement group; The scheduling module also includes: Sort the common battery cells in the cascade utilization group and the fully charged battery replacement group respectively based on the health status from high to low; The scheduling module also includes: For the universal battery cells in the cascade utilization group or the fully charged battery replacement group, the arrangement order of the universal battery cells in the same health state is determined based on the order of the internal resistance of the universal battery cells from small to large, and the sequence order of the universal battery cells in each group is obtained; Based on the sequence order, one or more universal battery cells belonging to the same group are allocated to the vehicle for battery replacement of the vehicle.

5. A battery swap station, characterized in that: include: A universal battery unit and a battery swap scheduling system according to claim 4 for scheduling the universal battery unit; The universal battery units are used to power the vehicle individually or in combination.

6. An electronic device comprising 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 swap scheduling method according to any one of claims 1 to 3 is implemented.

Images