A control method, device, equipment and storage medium for quick-change battery pack

Abstract

The present invention discloses a control method, device, equipment and storage medium for a quick-change battery pack, the method comprising the steps of: judging whether the evaluation index of a fully charged quick-change battery pack in a battery swap station meets the set standard, the evaluation index comprising: the terminal voltage difference between the cells in a single quick-change battery pack, the terminal voltage difference between multiple quick-change battery packs, the battery temperature difference of a single fully charged quick-change battery pack, the discharge capacity difference of multiple fully charged quick-change battery packs, and the full-charge storage time difference of multiple fully charged quick-change battery packs; when the evaluation index does not meet the set standard, adjusting the state of the fully charged quick-change battery pack until the set standard is met. The present application can improve the cycle life of the power battery system, further reduce the probability of failure during vehicle operation, extend the driving range of the battery swap vehicle, and meet the user's demand for vehicle driving range.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a control method, device, equipment and storage medium for a quick-change battery pack. Background Art

[0002] With the popularity of new energy vehicles, the battery life of the vehicle has attracted more and more attention from all walks of life. Pure electric vehicles have many advantages, such as zero emissions and low charging costs. Due to the current constraints on the development of power battery technology, the power of the battery pack is still insufficient to meet the vehicle's cruising range. In the prior art, the terminal voltage difference between the cells in a single quick-change battery pack and the terminal voltage difference between multiple quick-change battery packs are used as a quick-change control method for quick-change battery packs, which cannot form a power battery system composed of multiple quick-change battery packs with better performance (cycle life, etc.). For example, the temperature difference of the cells, the difference in discharge capacity, the terminal voltage difference between battery packs, etc. have a greater impact on the cycle life of the battery pack, thereby reducing the cycle life of the power battery system and the vehicle's cruising range.

[0003] Therefore, how to assemble a high-performance quick-change battery pack to improve the cycle life of the power battery system is a technical problem that urgently needs to be solved. Summary of the invention

[0004] The main purpose of the present invention is to provide a control method, device, equipment and storage medium for a quick-change battery pack, which can improve the cycle life of the power battery system, further reduce the probability of failure during vehicle operation, extend the cruising range of the battery-swap vehicle, and meet the user's demand for vehicle cruising range.

[0005] In a first aspect, the present application provides a control method for a quick-change battery pack, the method comprising the steps of:

[0006] Determine whether the evaluation indicators of the fully charged quick-swap battery packs in the battery swap station meet the set standards, the evaluation indicators include: the terminal voltage difference between the cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully charged quick-swap battery pack, the discharge capacity difference of multiple fully charged quick-swap battery packs, and the full-charge storage time difference of multiple fully charged quick-swap battery packs;

[0007] When the evaluation index does not meet the set standard, the state of the fully charged quick-change battery pack is adjusted until the set standard is met.

[0008] In combination with the above-mentioned first aspect, as an optional implementation method, when it is determined that the voltage difference at the cell ends in a single fully-charged quick-swap battery pack is less than or equal to a first set voltage difference, the single fully-charged quick-swap battery pack is charged and / or discharged for equalization until the voltage difference at the cell ends in the single fully-charged quick-swap battery pack is less than or equal to the first set voltage difference.

[0009] In combination with the above-mentioned first aspect, as an optional implementation method, when it is determined that the battery temperature difference of a single fully-charged quick-swap battery pack is less than or equal to a set temperature, the single fully-charged quick-swap battery pack is left to stand and / or cooled on a liquid cooling plate of a charging rack until the battery temperature difference of the single fully-charged quick-swap battery pack is less than or equal to the set temperature difference.

[0010] In combination with the above-mentioned first aspect, as an optional implementation method, when it is determined that the terminal voltage difference between multiple fully-charged quick-change battery packs is less than or equal to a second set voltage difference, the multiple quick-change battery packs are charged and / or discharged evenly until the terminal voltage difference between the multiple quick-change battery packs is less than or equal to the second set voltage difference.

[0011] In combination with the first aspect above, as an optional implementation method, when determining whether the discharge capacity difference of multiple fully-charged quick-swap battery packs is within a preset range, a single quick-swap battery pack is charged and / or discharged evenly until the discharge capacity difference of each of the multiple fully-charged quick-swap battery packs is within the preset range.

[0012] In combination with the first aspect above, as an optional implementation method, when determining whether the full-charge storage time difference of multiple fully-charged quick-change battery packs is within a preset time range, charge balancing is performed on a single quick-change battery pack to optimize the storage time so that the storage time difference of multiple quick-change battery packs is within the preset time range.

[0013] In combination with the first aspect above, as an optional implementation method, the current terminal voltage and balancing current of a single quick-change battery pack and battery cell are detected, and constant voltage and constant current charging and / or pulse balancing charging and constant current discharge mode are adopted to balance the charge and discharge of the single quick-change battery pack.

[0014] In a second aspect, the present application provides a control device for a quick-change battery pack, the device comprising:

[0015] A judgment module, which is used to judge whether the evaluation indicators of the fully charged quick-swap battery packs in the battery swap station meet the set standards, the evaluation indicators include: the terminal voltage difference between the cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully charged quick-swap battery pack, the discharge capacity difference of multiple fully charged quick-swap battery packs, and the full-charge storage time difference of multiple fully charged quick-swap battery packs;

[0016] An adjustment module is used to adjust the state of the fully charged quick-change battery pack until the set standard is met when the evaluation index does not meet the set standard.

[0017] In a third aspect, the present application further provides an electronic device, comprising: a processor; a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method described in any one of the first aspects is implemented.

[0018] In a fourth aspect, the present application further provides a computer-readable storage medium storing computer program instructions, which, when executed by a computer, enables the computer to execute any of the methods described in the first aspect.

[0019] The present application provides a control method, device, equipment and storage medium for a quick-swap battery pack, the method comprising the steps of: judging whether the evaluation index of a fully charged quick-swap battery pack in a battery swap station meets the set standard, the evaluation index including: the terminal voltage difference between the cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully-charged quick-swap battery pack, the discharge capacity difference of multiple fully-charged quick-swap battery packs, and the full-charge storage time difference of multiple fully-charged quick-swap battery packs; when the evaluation index does not meet the set standard, adjusting the state of the fully-charged quick-swap battery pack until the set standard is met. The present application can improve the cycle life of the power battery system, further reduce the probability of failure during the operation of the whole vehicle, extend the driving range of the battery swap vehicle, and meet the user's demand for the driving range of the whole vehicle.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0022] Figure 1 A control flow chart of a quick-change battery pack provided in an embodiment of the present application;

[0023] Figure 2 A control schematic diagram of a quick-change battery pack provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of a computer-readable program medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0027] Furthermore, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. Some of the blocks shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities.

[0028] At present, there is a power battery system composed of multiple quick-change battery packs. Using the terminal voltage difference between battery cells in a single quick-change battery pack and the terminal voltage difference between multiple quick-change battery packs as a quick-change control method for quick-change battery packs cannot form a power battery system composed of multiple quick-change battery packs with better performance. For example, the temperature difference of the battery cells has a greater impact on the cycle life of the battery pack.

[0029] The present application utilizes the terminal voltage difference between battery cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully-charged quick-swap battery pack, the discharge capacity difference of multiple fully-charged quick-swap battery packs, and the full-charge storage time difference of multiple fully-charged quick-swap battery packs. These evaluation indicators can improve the cycle life of the power battery system, further reduce the probability of battery voltage difference and battery temperature difference failures during vehicle operation, extend the cruising range of battery-swap vehicles, and meet customer demand for vehicle cruising range.

[0030] In order to achieve the above technical effects, the general idea of ​​this application is as follows:

[0031] A control method for a quick-change battery pack, the method comprising the steps of:

[0032] S101: Determine whether the evaluation indicators of the fully charged quick-swap battery packs in the battery swap station meet the set standards, the evaluation indicators including: the terminal voltage difference between the battery cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully charged quick-swap battery pack, the discharge capacity difference of multiple fully charged quick-swap battery packs, and the full-charge storage time difference of multiple fully charged quick-swap battery packs.

[0033] S102: When the evaluation index does not meet the set standard, adjust the state of the fully charged quick-change battery pack until the set standard is met.

[0034] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0035] Reference Figure 1 , Figure 1 FIG. 1 is a flow chart of a control method for a quick-change battery pack provided by the present invention. Figure 1 As shown, a control flow chart of a quick-change battery pack includes the following steps:

[0036] Step S101: Determine whether the evaluation indicators of the fully charged quick-swap battery packs in the battery swap station meet the set standards, the evaluation indicators include: the terminal voltage difference between the battery cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully charged quick-swap battery pack, the discharge capacity difference of multiple fully charged quick-swap battery packs, and the full-charge storage time difference of multiple fully charged quick-swap battery packs.

[0037] Specifically, after the battery swap vehicle enters the battery swap station, the equipment in the station removes the quick-swap battery pack from the vehicle. When it is determined that the quick-swap battery pack is removed from the vehicle, the monitoring equipment in the station displays the evaluation indicators of the fully charged quick-swap battery packs in the station, and determines whether the evaluation indicators of the fully charged quick-swap battery packs in the station meet the set standards. The evaluation indicators include: the terminal voltage difference between battery cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully charged quick-swap battery pack, the discharge capacity difference of multiple fully charged quick-swap battery packs, and the full-charge storage time difference of multiple fully charged quick-swap battery packs.

[0038] In one embodiment, a single quick-change battery pack removed from a vehicle by equipment in the station will be quickly and evenly charged by a charger on the charging rack of the battery swap station. The voltage at the end of the equalization state should be set to a value less than the value near the charging cut-off voltage, where the charging cut-off voltage is 3.65V for lithium iron phosphate and 4.2V for ternary lithium or lithium manganese oxide.

[0039] The charger on the charging rack of the battery swap station exchanges information with the monitoring equipment in the battery swap station through the charger's CAN bus. The charger exchanges information with the BMS installed inside the battery pack through the charger's CAN bus. When the quick-swap battery pack is on the charging rack of the battery swap station, the BMS is always in a low-voltage power-on state and sends battery status information to the charger. The charger is responsible for sending the received battery status information to the monitoring equipment in the station. The BMS actively terminates the charging process when the quick-swap battery pack is judged to be full. Among them, it should be noted that the charger on the charging rack of the battery swap station exchanges information with the monitoring equipment in the battery swap station through the charger's CAN bus in order to control the start of the charger, and the charger and the BMS exchange information through the charger's CAN bus in order to detect whether the battery pack meets specific charging conditions.

[0040] Step S102: When the evaluation index does not meet the set standard, adjust the state of the fully charged quick-change battery pack until it meets the set standard.

[0041] Specifically, after the battery swap vehicle enters the battery swap station, the equipment in the station removes the quick-swap battery pack from the vehicle. When it is determined that the quick-swap battery pack is removed from the vehicle, the monitoring equipment in the station displays the evaluation indicators of the fully charged quick-swap battery pack in the station, and determines whether the five evaluation indicators of the fully charged quick-swap battery pack in the station meet the set standards. When it is determined that the evaluation indicators do not meet the set standards, the status of the fully charged quick-swap battery pack is adjusted until the set standards are met.

[0042] It is understandable that after the battery swap vehicle enters the battery swap station, the equipment in the battery swap station removes the quick-swap battery pack from the vehicle, and the monitoring equipment in the station displays the evaluation indicators of the fully charged quick-swap battery pack in the station. When it is determined that the terminal voltage difference of the battery cells in a single fully charged quick-swap battery pack is less than or equal to 25mV, the single fully charged quick-swap battery pack is charged and / or discharged for equalization until the terminal voltage difference of the battery cells in a single fully charged quick-swap battery pack is less than or equal to 25mV. It should be noted that the terminal voltage difference between the battery cells in a single quick-swap battery pack: a single battery pack is composed of several battery cells connected in series and parallel; the terminal voltages at both ends of the battery cells or battery modules are detected by voltage sensors, and the terminal voltage difference between the battery cell or battery module with the maximum terminal voltage and the battery cell or battery module with the minimum terminal voltage is the terminal voltage difference between the battery cells in a single quick-swap battery pack.

[0043] In one embodiment, a method for achieving balanced charging or discharging of a single quick-swap battery pack is as follows: by detecting the current terminal voltage and balanced current of a single quick-swap battery pack and a battery cell, constant voltage and constant current charging or pulse balanced charging and constant current discharging modes are adopted to achieve balanced charging and discharging of a single quick-swap battery pack. When the balanced charger on the charging rack of the battery swap station starts the balanced function, it will determine whether the terminal voltage of the battery cell in the single quick-swap battery pack exceeds the set minimum or maximum voltage. If it exceeds, the balanced function will not be turned on.

[0044] Optionally, after the battery swap vehicle enters the battery swap station, the equipment in the battery swap station removes the quick-swap battery pack from the vehicle, and the monitoring equipment in the station displays the evaluation indicators of the fully charged quick-swap battery pack in the station. When a single fully charged quick-swap battery pack on the charging rack of the battery swap station, if its battery temperature difference is greater than 5°C, the single fully charged quick-swap battery pack can be cooled by standing still or on the liquid cooling plate of the charging rack, and the liquid cooling plate is installed with a thermal conductive adhesive pad, which can better fit the bottom surface of the quick-swap battery pack, reduce the temperature difference between batteries in a single quick-swap battery pack, so that the battery temperature difference meets the battery swap conditions. It should be noted that a single battery pack is arranged with several temperature sensors, which mainly detect the surface temperature of the battery cell or battery module. The difference between the maximum and minimum values ​​of these temperature values ​​is the battery temperature difference.

[0045] Optionally, after the battery swap vehicle enters the battery swap station, the equipment in the battery swap station removes the quick-swap battery pack from the vehicle, and the monitoring equipment in the station displays the evaluation indicators of the fully charged quick-swap battery packs in the station. When it is determined that the terminal voltage difference between multiple fully charged quick-swap battery packs is less than or equal to 200mV, the multiple quick-swap battery packs are charged and / or discharged evenly until the terminal voltage difference between the multiple quick-swap battery packs is less than or equal to 200mV. It should be noted that the terminal voltage difference between multiple quick-swap battery packs: the terminal voltage difference between the positive and negative poles of each battery pack that disconnects the power load. The terminal voltage difference of multiple battery packs is the terminal voltage difference of the multiple battery packs as a whole, not the terminal voltage difference of a single battery cell or battery module inside.

[0046] Optionally, after the battery swap vehicle enters the battery swap station, the equipment in the battery swap station removes the quick-swap battery pack from the vehicle, and the monitoring equipment in the station displays the evaluation indicators of the fully charged quick-swap battery packs in the station. When there are multiple fully charged quick-swap battery packs on the charging rack of the battery swap station, if the discharge capacity difference is greater than 2Ah, a single quick-swap battery pack can be charged or discharged so that the discharge capacity difference of multiple quick-swap battery packs meets the battery swap conditions. It should be noted that if the battery pack on the charging rack is not fully charged, and after the battery pack is fully charged on the charging rack, several fully charged battery packs are discharged at a certain discharge current, and when the same battery cell discharge cut-off condition is reached, each battery pack has a discharge capacity parameter value, and the difference between the maximum and minimum values ​​of the discharge capacity parameter values ​​of multiple battery packs is the discharge capacity difference of multiple battery packs.

[0047] It should be noted that the ambient temperature in the space where the charging racks are arranged in the battery swap station is controlled by industrial air conditioning.

[0048] In addition, when the vehicle enters the battery swap process, the battery swap station will first find a single battery pack that meets the pressure and temperature difference requirements, and then select the battery packs required for the vehicle from the single battery packs that meet the requirements. The control method for quick battery swapping in this application is applicable to vehicles equipped with a single battery swap pack, and also to vehicles equipped with multiple battery swap packs.

[0049] Among them, vehicles equipped with a single battery swap pack are only controlled by the cell voltage difference and battery temperature difference. Vehicles equipped with multiple battery swap packs use the terminal voltage difference between cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully charged quick-swap battery pack, the discharge capacity difference of multiple fully charged quick-swap battery packs, and the full-charge storage time difference of multiple fully charged quick-swap battery packs to control battery swapping.

[0050] Optionally, after the battery swap vehicle enters the battery swap station, the equipment in the battery swap station removes the quick-swap battery pack from the vehicle, and the monitoring equipment in the station displays the evaluation indicators of the fully charged quick-swap battery packs in the station. When multiple fully charged quick-swap battery packs on the charging rack of the battery swap station have a storage time difference of more than 7 days, a single fully charged quick-swap battery pack that has been stored for more than 7 days can meet the battery swap conditions of the storage time difference of multiple quick-swap battery packs through one charge balancing. It should be noted that the difference in battery consistency parameters caused by long storage time can be optimized through one charge balancing.

[0051] When the terminal voltage difference between battery cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully-charged quick-swap battery pack, the discharge capacity difference of multiple fully-charged quick-swap battery packs, and the full-charge storage time difference of multiple fully-charged quick-swap battery packs are adjusted to the set standards, the conditions for battery replacement are met, and the equipment in the station assembles multiple fully-charged quick-swap battery packs on the vehicle. When it is determined that the assembly of multiple fully-charged quick-swap battery packs is completed, the battery replacement vehicle drives out of the battery replacement station.

[0052] Reference Figure 2 , Figure 2 FIG. 1 is a schematic diagram of a control device for a quick-change battery pack provided by the present invention. Figure 2 As shown, the device comprises:

[0053] Judgment module 201: It is used to determine whether the evaluation indicators of the fully charged quick-change battery pack in the battery swap station meet the set standards. The evaluation indicators include: the terminal voltage difference between the battery cells in a single quick-change battery pack, the terminal voltage difference between multiple quick-change battery packs, the battery temperature difference of a single fully charged quick-change battery pack, the discharge capacity difference of multiple fully charged quick-change battery packs, and the full-charge storage time difference of multiple fully charged quick-change battery packs.

[0054] The adjustment module 202 is used to adjust the state of the fully charged quick-change battery pack until the set standard is met when the evaluation index does not meet the set standard.

[0055] Furthermore, in a possible implementation, the adjustment module 202 is also used to, when it is determined that the cell terminal voltage difference in a single fully-charged quick-swap battery pack is less than or equal to a first set voltage difference, perform charge and / or discharge balancing on the single fully-charged quick-swap battery pack until the cell terminal voltage difference in the single fully-charged quick-swap battery pack is less than or equal to the first set voltage difference.

[0056] Furthermore, in a possible implementation, the adjustment module 202 is also used to, when it is determined that the battery temperature difference of a single fully-charged quick-swap battery pack is less than or equal to a set temperature, place the single fully-charged quick-swap battery pack at rest and / or cool it on a liquid cooling plate of a charging rack until the battery temperature difference of the single fully-charged quick-swap battery pack is less than or equal to the set temperature difference.

[0057] Furthermore, in a possible implementation, the adjustment module 202 is also used to, when it is determined that the terminal voltage difference between multiple fully-charged quick-change battery packs is less than or equal to a second set voltage difference, charge and / or discharge the multiple quick-change battery packs evenly until the terminal voltage difference between the multiple quick-change battery packs is less than or equal to the second set voltage difference.

[0058] Furthermore, in a possible implementation, the adjustment module 202 is also used to, when determining whether the discharge capacity difference of multiple fully-charged quick-swap battery packs is within a preset range, charge and / or discharge balance a single quick-swap battery pack until the discharge capacity difference of each of the multiple fully-charged quick-swap battery packs is within a preset range.

[0059] Furthermore, in a possible implementation, the adjustment module 202 is also used to, when determining whether the full-charge storage time difference of multiple fully-charged quick-change battery packs is within a preset time range, perform charge balancing on a single quick-change battery pack to optimize the storage time so that the storage time difference of multiple quick-change battery packs is within a preset time range.

[0060] Furthermore, in a possible implementation, the adjustment module 202 is also used to detect the current terminal voltage and balancing current of a single quick-change battery pack and battery cell, and use constant voltage and constant current charging and / or pulse balancing charging and constant current discharge mode to balance the charge and discharge of the single quick-change battery pack.

[0061] Refer to the following Figure 3 The electronic device 300 according to this embodiment of the present invention will be described. Figure 3 The electronic device 300 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0062] like Figure 3 As shown, the electronic device 300 is in the form of a general computing device. The components of the electronic device 300 may include but are not limited to: at least one processing unit 310, at least one storage unit 320, and a bus 330 connecting different system components (including the storage unit 320 and the processing unit 310).

[0063] The storage unit stores program codes, which can be executed by the processing unit 310, so that the processing unit 310 executes the steps according to various exemplary embodiments of the present invention described in the above “Embodiment Method” section of this specification.

[0064] The storage unit 320 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 321 and / or a cache memory unit 322 , and may further include a read-only memory unit (ROM) 323 .

[0065] The storage unit 320 may also include a program / utility 324 having a set (at least one) of program modules 325, such program modules 325 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0066] Bus 330 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0067] The electronic device 300 may also communicate with one or more external devices (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 300, and / or communicate with any device that enables the electronic device 300 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 350. Furthermore, the electronic device 300 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 360. As shown, the network adapter 360 communicates with other modules of the electronic device 300 via a bus 330. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 300, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0068] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0069] According to the solution of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible implementations, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary implementations of the present invention described in the above "Exemplary Method" section of the present specification.

[0070] refer to Figure 4 As shown, a program product 400 for implementing the above method according to an embodiment of the present invention is described, which can adopt a portable compact disk read-only memory (CD-ROM) and include program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, an apparatus or a device.

[0071] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0072] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0073] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0074] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0075] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0076] In summary, the present application provides a control method, device, equipment and storage medium for a quick-swap battery pack, the method comprising the steps of: determining whether the evaluation index of a fully charged quick-swap battery pack in a battery swap station meets the set standard, the evaluation index including: the terminal voltage difference between the cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully-charged quick-swap battery pack, the discharge capacity difference of multiple fully-charged quick-swap battery packs, and the full-charge storage time difference of multiple fully-charged quick-swap battery packs; when the evaluation index does not meet the set standard, adjusting the state of the fully-charged quick-swap battery pack until the set standard is met. The present application can improve the cycle life of the power battery system, further reduce the probability of failure during vehicle operation, extend the driving range of the battery swap vehicle, and meet the user's demand for vehicle driving range.

[0077] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[0078] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and each process and / or block in the flowcharts and / or block diagrams can be implemented by computer program instructions.

[0079] These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

Claims

1. A control method for a quick-change battery pack, characterized in that: include: Determine whether the evaluation indicators of the fully charged quick-swap battery packs in the battery swap station meet the set standards, the evaluation indicators include: the terminal voltage difference between the cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully charged quick-swap battery pack, the discharge capacity difference of multiple fully charged quick-swap battery packs, and the full-charge storage time difference of multiple fully charged quick-swap battery packs; When the evaluation index does not meet the set standard, adjusting the state of the fully charged quick-change battery pack until the set standard is met; Among them, when it is determined that the battery temperature difference of a single fully-charged quick-swap battery pack is greater than the set temperature, the single fully-charged quick-swap battery pack is left to stand and / or cooled on the liquid cooling plate of the charging rack until the battery temperature difference of the single fully-charged quick-swap battery pack is less than or equal to the set temperature difference.

2. The method according to claim 1, characterized in that When the evaluation index does not meet the set standard, adjusting the state of the fully charged quick-change battery pack until the set standard is met, includes: When it is determined that the voltage difference at the cell terminals in a single fully-charged quick-swap battery pack is greater than the first set voltage difference, the single fully-charged quick-swap battery pack is charged and / or discharged evenly until the voltage difference at the cell terminals in the single fully-charged quick-swap battery pack is less than or equal to the first set voltage difference.

3. The method according to claim 1, characterized in that When the evaluation index does not meet the set standard, adjusting the state of the fully charged quick-change battery pack until the set standard is met, further comprising: When it is determined that the terminal voltage difference between the multiple fully-charged quick-change battery packs is greater than the second set voltage difference, the multiple quick-change battery packs are charged and / or discharged evenly until the terminal voltage difference between the multiple quick-change battery packs is less than or equal to the second set voltage difference.

4. The method according to claim 1, characterized in that When the evaluation index does not meet the set standard, adjusting the state of the fully charged quick-change battery pack until the set standard is met, further comprising: When it is determined that the discharge capacity difference of multiple fully-charged quick-swap battery packs is not within a preset range, a single quick-swap battery pack is charged and / or discharged evenly until the discharge capacity difference of each of the multiple fully-charged quick-swap battery packs is within a preset range.

5. The method according to claim 1, characterized in that When the evaluation index does not meet the set standard, adjusting the state of the fully charged quick-change battery pack until the set standard is met, further comprising: When it is determined that the full-charge storage time difference of multiple fully-charged quick-change battery packs is not within the preset time range, charge balancing is performed on a single quick-change battery pack to optimize the storage time so that the storage time difference of the multiple quick-change battery packs is within the preset time range.

6. The method according to claim 1, characterized in that: The current terminal voltage and balancing current of a single quick-change battery pack and battery cell are detected, and constant voltage and constant current charging and / or pulse balancing charging and constant current discharge mode are adopted to balance the charge and discharge of a single quick-change battery pack.

7. A control device for a quick-change battery pack, characterized in that: include: A judgment module, which is used to judge whether the evaluation indicators of the fully charged quick-swap battery packs in the battery swap station meet the set standards, the evaluation indicators include: the terminal voltage difference between the cells in a single quick-swap battery pack, the terminal voltage difference between multiple quick-swap battery packs, the battery temperature difference of a single fully charged quick-swap battery pack, the discharge capacity difference of multiple fully charged quick-swap battery packs, and the full-charge storage time difference of multiple fully charged quick-swap battery packs; An adjustment module, which is used to adjust the state of the fully charged quick-change battery pack until the set standard is met when the evaluation index does not meet the set standard; When it is determined that the battery temperature difference of a single fully-charged quick-swap battery pack is greater than a set temperature, the single fully-charged quick-swap battery pack is left to stand and / or cooled on a liquid cooling plate of a charging rack until the battery temperature difference of the single fully-charged quick-swap battery pack is less than or equal to the set temperature difference.

8. An electronic device, characterized in that: The electronic device comprises: processor; A memory having computer-readable instructions stored thereon, wherein when the computer-readable instructions are executed by the processor, the method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that: The computer program instructions are stored therein, and when the computer program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 6.

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