Power battery power control method, device, equipment, medium and program product

Abstract

Embodiments of the present application disclose a power battery power control method, device, equipment, medium and program product. The method comprises: in response to the temperature of a connecting piece of a power battery reaching a preset temperature threshold, obtaining a residual heat accumulation value of the connecting piece and an actual current passing through the connecting piece; based on the residual heat accumulation value and the actual current, calculating an allowable current of the connecting piece, so as to control the power of the power battery according to the allowable current. The embodiments of the present application can optimize the power control logic of the power battery and reduce the risk of insufficient battery power during driving.

Description

Technical Field

[0001] This application belongs to the field of electric vehicle technology, and in particular relates to a power battery power control method, device, equipment, computer storage medium and computer program product. Background Technology

[0002] With the promotion of energy conservation and emission reduction concepts, new energy vehicle models such as plug-in hybrid electric vehicles and pure electric vehicles have experienced rapid development in recent years. Currently, the power batteries used in new energy vehicles are mainly battery modules composed of lithium-ion cells. The heat accumulated during vehicle operation can significantly impact the performance of the power battery. For example, when the battery temperature exceeds a certain threshold, the lithium-ion cells will experience irreversible performance degradation, and in extreme cases, there may even be a risk of explosion. Therefore, it is usually necessary to limit the power output of the power battery to reduce the risk of performance degradation and minimize safety hazards.

[0003] Related technologies involve temperature monitoring of the power battery. When the power battery temperature meets the over-temperature trigger condition, the allowable power of the power battery is limited according to a preset limiting coefficient. However, this method directly limits the allowable power of the power battery to a lower power when the power battery temperature meets the over-temperature trigger condition, which can easily cause insufficient power during driving, affecting the normal driving of the vehicle and the user's driving experience. Summary of the Invention

[0004] This application provides a power battery power control method, device, equipment, computer storage medium, and computer program product, which can optimize the power battery power control logic and reduce the risk of insufficient battery power during driving.

[0005] In a first aspect, embodiments of this application provide a power battery power control method, including:

[0006] In response to the temperature of the power battery connector reaching a preset temperature threshold, the remaining heat accumulation value of the connector and the actual current through the connector are obtained.

[0007] Based on the residual heat accumulation value and the actual current, the allowable current of the connector is calculated for power control of the power battery according to the allowable current.

[0008] In one optional implementation, obtaining the residual heat accumulation value of the connector includes:

[0009] Obtain the maximum heat accumulation value of the connector;

[0010] Obtain the actual heat accumulation value of the connector;

[0011] The difference between the maximum heat accumulation value and the actual heat accumulation value is determined as the remaining heat accumulation value.

[0012] In one alternative implementation, obtaining the maximum heat accumulation value of the connector includes:

[0013] Calculate the first thermal accumulation value of the connector under the maximum allowable current and the maximum pulse current allowable time;

[0014] Calculate the second thermal accumulation value of the connector under the thermal equilibrium current and the maximum pulse current allowable time at the preset temperature threshold.

[0015] The difference between the first and second heat accumulation values ​​is determined as the maximum heat accumulation value.

[0016] In one optional implementation, obtaining the actual heat accumulation value of the connector includes:

[0017] Obtain the actual current of the connector;

[0018] The actual heat accumulation value is calculated based on the actual current, the thermal balance current corresponding to the preset temperature threshold, and the preset allowable time limit.

[0019] In one alternative implementation, after calculating the allowable current of the connector, the method further includes:

[0020] The allowable current of the connector is determined to be the allowable current of the power battery.

[0021] In one alternative implementation, after calculating the allowable current of the connector, the method further includes:

[0022] The actual allowable power of the power battery is determined based on the allowable current of the connector.

[0023] Secondly, embodiments of this application provide a power battery power control device, comprising:

[0024] The acquisition module is used to acquire the remaining heat accumulation value of the connector and the actual current through the connector in response to the temperature of the power battery connector reaching a preset temperature threshold.

[0025] The calculation module is used to calculate the allowable current of the connector based on the residual heat accumulation value and the actual current, so as to perform power control of the power battery according to the allowable current.

[0026] Thirdly, embodiments of this application provide an electronic device, the device including: a processor and a memory storing computer program instructions;

[0027] When the processor executes computer program instructions, it implements a power battery power control method as described in any optional embodiment of the first aspect of this application.

[0028] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer program instructions, which, when executed by a processor, implement the power battery power control method as described in any optional embodiment of the first aspect of this application.

[0029] Fifthly, embodiments of this application provide a computer program product in which instructions, when executed by a processor of an electronic device, cause the electronic device to perform a power battery power control method as described in any optional embodiment of the first aspect of this application.

[0030] The power battery power control method, apparatus, device, computer storage medium, and computer program product of this application embodiment can, in response to the temperature of the power battery connector reaching a preset temperature threshold, obtain the remaining heat accumulation value of the connector and the actual current of the connector, and calculate the allowable current of the connector based on the remaining heat accumulation value and the actual current, so as to control the power battery power according to the allowable current. Currently, in the selection and design process of power battery connectors, considering cost factors, the capacity of the connector is usually designed to be less than the capacity of the battery cell. The power battery power control based on the allowable current of the connector in this application embodiment is beneficial to calculate the actual available capacity of the power battery in real time according to the actual capacity of the connector. In this way, a smooth transition of power battery power can be achieved based on the actual operating conditions of the connector. Thus, the power control logic of the power battery can be optimized, the risk of insufficient battery power during driving can be reduced, thereby helping to ensure the normal operation of the vehicle and improve the user's driving experience. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic flowchart of a power battery power control method provided in one embodiment of this application;

[0033] Figure 2 This is a schematic diagram of power battery power control optimization provided in another embodiment of this application;

[0034] Figure 3 This is a schematic diagram of the structure of a power battery power control device provided in another embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the structure of a power battery power control device provided in another embodiment of this application. Detailed Implementation

[0036] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0038] As described in the background section, the heat accumulated during vehicle operation can significantly impact the performance of the power battery. Therefore, it is usually necessary to limit the power battery's output to reduce the risk of performance degradation and minimize safety hazards.

[0039] Related technologies involve temperature monitoring of power batteries. When the power battery temperature meets the over-temperature trigger condition, the allowable power of the power battery is limited according to a preset limiting factor. As an example, when the shunt temperature of the power battery has not reached the first-level over-temperature trigger condition (e.g., debounce function set to 5s, temperature reaching above 130°C), the limiting factor can be 1, and the allowable power of the power battery can be the maximum allowable power. When the shunt temperature reaches the first-level over-temperature trigger condition, the limiting factor can be adjusted to 0.75, and the allowable power of the power battery can be 0.75 times the maximum allowable power. When the shunt temperature reaches the over-temperature recovery condition (e.g., debounce set to 5s, temperature reaching below 125°C), the limiting factor can be adjusted to 1, and the allowable power of the power battery can recover to the maximum allowable power. When a vehicle is subjected to continuous rapid acceleration and deceleration, the shunt temperature will continue to rise due to heat accumulation. When a Level 1 over-temperature fault is triggered, the allowable power of the power battery will be limited to 75%. At this time, when accelerating, the power will feel insufficient, affecting the normal driving of the vehicle and the driving experience of the user.

[0040] The inventors discovered that the relevant technology only controls the allowable power of the power battery through preset over-temperature triggering conditions, lacks reliable allowable power control logic, and the limiting coefficient is not adjusted according to the actual situation of the power battery, which poses a risk of one-size-fits-all approach and greatly affects the normal operation of the vehicle and the user's driving experience.

[0041] In order to optimize the power control logic of the power battery and reduce the risk of insufficient battery power during driving, the inventors have ingeniously proposed a power battery power control method, device, equipment, computer storage medium and computer program product.

[0042] Specifically, the inventors discovered that currently, during the selection and design process of power battery connectors, cost factors are considered, and the capacity of the connectors is usually only "sufficient," resulting in the power battery capacity being less than the cell capacity. Under certain operating conditions (such as continuous rapid acceleration and deceleration), insufficient connector capacity can easily lead to fault reports from the Battery Management System (BMS). Through in-depth consideration and extensive research, the inventors discovered that controlling the power battery power based on the actual usable capacity of the connectors is beneficial for fully utilizing the power battery's capacity and reducing the risk of insufficient battery power during driving. Based on this, the inventors further researched and proposed the power battery power control method, device, equipment, computer storage medium, and computer program product according to embodiments of this application.

[0043] The power battery power control method provided in this application will be described below with reference to the accompanying drawings and through specific embodiments and application scenarios. The device executing the power battery power control method provided in this application can be a power battery power control device, or a portion of the power battery power control device used to execute the power battery power control method. This application uses the execution of the power battery power control method by a power battery power control device as an example to describe in detail the power battery power control method provided in this application.

[0044] Figure 1 A schematic flowchart of a power battery power control method according to an embodiment of this application is shown. Figure 1 As shown, the power battery power control method may specifically include the following steps S110 to S120.

[0045] S110, in response to the temperature of the power battery connector reaching a preset temperature threshold, obtains the residual heat accumulation value of the connector and the actual current through the connector.

[0046] In step S110, the connector for the power battery may include connectors known in the art for carrying current between components in a battery circuit, such as connectors for electrical connections between individual cells, between battery terminals and battery pack terminals, or between battery pack terminals and external circuits and auxiliary devices. The preset temperature threshold may include a temperature threshold determined based on the temperature tolerance of the connector. The remaining heat accumulation value may include the additional heat accumulation value that the connector can withstand beyond the current heat accumulation value.

[0047] S120 calculates the allowable current of the connector based on the residual heat accumulation value and the actual current, so as to perform power control of the power battery according to the allowable current.

[0048] In step S120, the allowable current of the connector can be the maximum current that the connector is allowed to pass through, based on the residual heat accumulation value and the actual current.

[0049] The power battery power control method of this application embodiment can, in response to the temperature of the power battery connector reaching a preset temperature threshold, obtain the remaining heat accumulation value of the connector and the actual current of the connector. Based on the remaining heat accumulation value and the actual current, it calculates the allowable current of the connector for power control of the power battery according to the allowable current. Currently, in the selection and design process of power battery connectors, considering cost factors, the capacity of the connector is usually designed to be less than that of the battery cell. The power battery power control method of this application embodiment based on the allowable current of the connector is beneficial to calculate the actual available capacity of the power battery in real time according to the actual capacity of the connector. In this way, a smooth transition of power battery power can be achieved based on the actual operating conditions of the connector. This optimizes the power battery power control logic, reduces the risk of insufficient battery power during driving, and thus helps to ensure the normal operation of the vehicle and improve the user's driving experience.

[0050] In one embodiment, obtaining the remaining heat accumulation value of the connector may specifically include:

[0051] Obtain the maximum heat accumulation value of the connector.

[0052] Obtain the actual heat accumulation value of the connector.

[0053] The difference between the maximum heat accumulation value and the actual heat accumulation value is determined as the remaining heat accumulation value.

[0054] The maximum heat accumulation value of the aforementioned connector may include the maximum heat accumulation value that the connector can withstand. The actual heat accumulation value of the aforementioned connector may be the current heat accumulation value of the connector.

[0055] In this embodiment, the difference between the maximum and actual heat accumulation values ​​of the connector is determined as the remaining heat accumulation value. This allows for power control of the battery based on the connector's maximum temperature tolerance. This maximizes the performance of the connector and consequently, the battery. Furthermore, it helps reduce the risk of insufficient battery power during driving, thus improving the user's driving experience.

[0056] In one embodiment, obtaining the maximum heat accumulation value of the connector may specifically include:

[0057] Calculate the first thermal accumulation value of the connector under the maximum allowable current and the maximum pulse current allowable time.

[0058] Calculate the second thermal accumulation value of the connector under the preset temperature threshold thermal equilibrium current and the maximum pulse current allowable time.

[0059] The difference between the first and second heat accumulation values ​​is determined as the maximum heat accumulation value.

[0060] The aforementioned maximum allowable current may include the maximum current that the connector can withstand, and the maximum pulse current allowable time may include the maximum duration of the pulse current. The aforementioned thermal equilibrium current may include the thermal equilibrium current before reaching a preset temperature threshold. When operating under this thermal equilibrium current, the temperature of the connector can remain essentially unchanged, i.e., thermal equilibrium is reached.

[0061] In this embodiment, the first and second thermal accumulation values ​​are calculated under the maximum allowable pulse current and thermal equilibrium current, respectively, during the allowable time of the connector's maximum pulse current. The difference between the first and second thermal accumulation values ​​is determined as the maximum thermal accumulation value. This facilitates accurate assessment of the maximum thermal accumulation value that the connector can withstand after reaching a preset temperature threshold, thereby improving the accuracy of calculating the connector's allowable current and consequently improving the accuracy of power battery power control. This, in turn, helps to fully utilize the power battery's capabilities, ensuring normal vehicle operation and enhancing the user's driving experience.

[0062] In one embodiment, obtaining the actual heat accumulation value of the connector may specifically include:

[0063] Obtain the actual current of the connector.

[0064] The actual heat accumulation value is calculated based on the actual current, the thermal balance current corresponding to the preset temperature threshold, and the preset allowable time limit.

[0065] The aforementioned allowable time limit can include the maximum allowable time that can be maintained, taking into account the rate of decrease of the current limit. The allowable time limit can be a pre-set fixed value. As an example, the allowable time limit can be less than the maximum pulse current allowable time; for example, the maximum pulse current allowable time can be 10 seconds, and the allowable time limit can be 8 seconds. As an example, the actual heat accumulation value is calculated based on the actual current, the thermal equilibrium current corresponding to the preset temperature threshold, and the preset allowable time limit. Specifically, this can include integrating the difference between the heat accumulation value under the allowable time limit and the actual current, and the heat accumulation value under the thermal equilibrium current, to obtain the actual heat accumulation value.

[0066] In this embodiment, the actual heat accumulation value is calculated based on the actual current, the thermal balance current corresponding to the preset temperature threshold, and the preset allowable time. This helps to accurately assess the actual heat accumulation value of the connector after reaching the preset temperature threshold, thereby improving the accuracy of calculating the allowable current of the connector and consequently improving the accuracy of power battery power control. This, in turn, helps to fully utilize the power battery's capabilities, ensuring normal vehicle operation and enhancing the user's driving experience.

[0067] In one embodiment, after calculating the allowable current of the connector, the method may further include:

[0068] The allowable current of the connector is determined to be the allowable current of the power battery.

[0069] The connector and the power battery cell can be connected in series. The allowable current of the connector is determined as the allowable current of the power battery, which helps to fully utilize the power battery's capabilities, thereby ensuring the normal operation of the vehicle and improving the user's driving experience.

[0070] In one embodiment, after calculating the allowable current of the connector, the method may further include:

[0071] The actual allowable power of the power battery is determined based on the allowable current of the connector.

[0072] The actual allowable power of the power battery is determined based on the allowable current of the connector. This can include determining the allowable current of the power battery based on the allowable current of the connector, thereby determining the actual allowable power of the power battery. The actual allowable power can be equal to the allowable power of the power battery under the allowable current of the connector. Considering the influence of other components or other environmental factors in the power battery system, the allowable current of the power battery can also be less than the allowable current of the connector, and the actual allowable power can be equal to the allowable power of the power battery under the allowable current of the connector.

[0073] In this embodiment, the actual allowable power of the power battery is determined based on the allowable current of the connector. This allows for flexible power control of the power battery based on the performance of the connector, thereby optimizing the performance of the power battery and further improving the user's driving experience.

[0074] To better describe the overall solution, a specific example is provided below based on the various implementation methods described above. It should be noted that the following example is for illustrative purposes only and not for limiting the scope of this application.

[0075] Specifically, the maximum allowable current I of the connector can be obtained. max The thermal equilibrium current I corresponding to the connector at the preset temperature threshold. bal The actual current I through the connector R The maximum allowable pulse current time t1 and the preset limit allowable time t2.

[0076] Then, the maximum heat accumulation value Q of the connector can be calculated using the following formula 1. max R1 can represent the resistance of the connector.

[0077]

[0078] Next, the current actual heat accumulation value Q of the connector can be calculated using the following formula 2. R .

[0079]

[0080] Next, the allowable current I of the connector as shown in Equation 3 can be used as a basis. limit With Q max Q R Based on the quantitative relationships, calculate the allowable current I of the connector. limit I limit The calculation results are shown in Equation 4. It is easy to understand that I can be adjusted in real time according to the actual current of the connector. limit .

[0081]

[0082]

[0083] In one embodiment, the above I can be used limit As the allowable current of the power battery, it is used to control the power battery's power. Figure 2 A schematic diagram of power battery power control according to an embodiment of this application is shown. Figure 2 As shown, compared to related technologies that monitor the temperature of the power battery and limit its allowable power according to a preset limiting coefficient when the battery temperature meets the over-temperature trigger condition, the power battery power control method in this application provides a smoother power limitation on the allowable power of the power battery. This not only allows the vehicle to accelerate normally, reducing the risk of insufficient power during driving, but also enables power control of the power battery based on the actual capacity of the connectors, thus facilitating a faster recovery of the connectors to normal temperature. This helps maintain the performance of the power battery and improves the user's driving experience.

[0084] Based on the same inventive concept, this application also provides a power battery power control device.

[0085] like Figure 3 As shown, the power battery power control device 200 may include an acquisition module 201 and a calculation module 202.

[0086] The acquisition module 201 is used to acquire the residual heat accumulation value of the connector and the actual current through the connector in response to the temperature of the power battery connector reaching a preset temperature threshold.

[0087] The calculation module 202 is used to calculate the allowable current of the connector based on the remaining heat accumulation value and the actual current, so as to perform power control of the power battery according to the allowable current.

[0088] The power battery power control device of this application embodiment can, in response to the temperature of the power battery connector reaching a preset temperature threshold, acquire the remaining heat accumulation value of the connector and the actual current of the connector, and calculate the allowable current of the connector based on the remaining heat accumulation value and the actual current, so as to perform power control of the power battery according to the allowable current. Currently, in the selection and design process of power battery connectors, considering cost factors, the capacity of the connector is usually designed to be less than the capacity of the battery cell. The power control device of this application embodiment based on the allowable current of the connector is beneficial to calculate the actual available capacity of the power battery in real time according to the actual capacity of the connector. In this way, a smooth transition of power battery power can be achieved based on the actual operating conditions of the connector. This optimizes the power battery power control logic, reduces the risk of insufficient battery power during driving, and thus helps to ensure the normal operation of the vehicle and improve the user's driving experience.

[0089] In one embodiment, the acquisition module is used to acquire the remaining heat accumulation value of the connector, which may specifically include:

[0090] The acquisition module is used to obtain the maximum heat accumulation value of the connector.

[0091] The acquisition module is used to obtain the actual heat accumulation value of the connector.

[0092] The determination module is used to determine the remaining heat accumulation value as the difference between the maximum heat accumulation value and the actual heat accumulation value.

[0093] In one embodiment, the acquisition module is used to acquire the maximum heat accumulation value of the connector, which may specifically include:

[0094] The calculation module is used to calculate the first thermal accumulation value of the connector under the maximum allowable current and the maximum pulse current allowable time.

[0095] The calculation module is also used to calculate the second thermal accumulation value of the connector under the preset temperature threshold thermal equilibrium current and the maximum pulse current allowable time.

[0096] The determination module is used to determine the difference between the first heat accumulation value and the second heat accumulation value as the maximum heat accumulation value.

[0097] In one embodiment, the acquisition module is used to acquire the actual heat accumulation value of the connector, which may specifically include:

[0098] The acquisition module is used to acquire the actual current of the connector.

[0099] The calculation module is used to calculate the actual heat accumulation value based on the actual current, the thermal balance current corresponding to the preset temperature threshold, and the preset allowable time limit.

[0100] In one embodiment, the power battery power control device may further include:

[0101] The determination module is used to determine the allowable current of the connector as the allowable current of the power battery.

[0102] In one embodiment, the power battery power control device may further include:

[0103] The determination module is used to determine the actual allowable power of the power battery based on the allowable current of the connector.

[0104] The power battery power control device provided in this application embodiment can achieve... Figure 1 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0105] Figure 4 A schematic diagram of the hardware structure of the power battery power control device provided in an embodiment of this application is shown.

[0106] The power control device for the power battery may include a processor 301 and a memory 302 storing computer program instructions.

[0107] Specifically, the processor 301 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0108] Memory 302 may include mass storage for data or instructions. For example, and not limitingly, memory 302 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 302 may include removable or non-removable (or fixed) media. Where appropriate, memory 302 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 302 is non-volatile solid-state memory.

[0109] Memory may include read-only memory (ROM), random access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, and electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods according to one aspect of this disclosure.

[0110] The processor 301 reads and executes computer program instructions stored in the memory 302 to implement any of the power battery power control methods in the above embodiments.

[0111] As an example, the power battery power control device may also include a communication interface 303 and a bus 310. Wherein, for example... Figure 4 As shown, the processor 301, memory 302, and communication interface 303 are connected through bus 310 and complete communication with each other.

[0112] The communication interface 303 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0113] Bus 310 includes hardware, software, or both, that couples components of an online data traffic metering device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 310 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0114] The property planning equipment can execute the property planning method in the embodiments of this application, thereby achieving a combination Figure 1 and Figure 3 The described power control method and device for a power battery.

[0115] Furthermore, in conjunction with the power battery power control method in the above embodiments, this application embodiment can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the power battery power control methods in the above embodiments.

[0116] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0117] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0118] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0119] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0120] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A power battery power control method, characterized in that, include: In response to the temperature of the power battery connector reaching a preset temperature threshold, the remaining heat accumulation value of the connector and the actual current through the connector are obtained. Based on the remaining heat accumulation value and the actual current, the allowable current of the connector is calculated for power control of the power battery according to the allowable current. Obtaining the residual heat accumulation value of the connector includes: Obtain the maximum heat accumulation value of the connector; Obtain the actual heat accumulation value of the connector; The difference between the maximum heat accumulation value and the actual heat accumulation value is determined as the remaining heat accumulation value; Obtaining the maximum heat accumulation value of the connector includes: Calculate the first thermal accumulation value of the connector under the maximum allowable current and the maximum pulse current allowable time; Calculate the thermal balance current of the connector at the preset temperature threshold and the second thermal accumulation value at the maximum pulse current allowable time. The difference between the first heat accumulation value and the second heat accumulation value is determined as the maximum heat accumulation value.

2. The method according to claim 1, characterized in that, Obtaining the actual heat accumulation value of the connector includes: Obtain the actual current of the connector; The actual heat accumulation value is calculated based on the actual current, the thermal balance current corresponding to the preset temperature threshold, and the preset allowable time limit.

3. The method according to claim 1 or 2, characterized in that, After calculating the allowable current of the connector, the method further includes: The allowable current of the connector is determined as the allowable current of the power battery.

4. The method according to claim 1 or 2, characterized in that, After calculating the allowable current of the connector, the method further includes: The actual allowable power of the power battery is determined based on the allowable current of the connector.

5. A power battery power control device, characterized in that, include: The acquisition module is used to acquire the remaining heat accumulation value of the connector and the actual current through the connector in response to the temperature of the connector of the power battery reaching a preset temperature threshold. The calculation module is used to calculate the allowable current of the connector based on the remaining heat accumulation value and the actual current, so as to perform power control on the power battery according to the allowable current. The acquisition module is used to acquire the remaining heat accumulation value of the connector, including: acquiring the maximum heat accumulation value of the connector; acquiring the actual heat accumulation value of the connector; and determining the difference between the maximum heat accumulation value and the actual heat accumulation value as the remaining heat accumulation value. The acquisition module is used to acquire the maximum thermal accumulation value of the connector, including: calculating the first thermal accumulation value of the connector under the maximum allowable current and the maximum pulse current allowable time; calculating the second thermal accumulation value of the connector under the thermal balance current at the preset temperature threshold and the maximum pulse current allowable time; and determining the difference between the first thermal accumulation value and the second thermal accumulation value as the maximum thermal accumulation value.

6. An electronic device, characterized in that, The device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements the power battery power control method as described in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions, which, when executed by a processor, implement the power battery power control method as described in any one of claims 1-4.

8. A computer program product, characterized in that, When the instructions in the computer program product are executed by the processor of the electronic device, the electronic device performs the power battery power control method as described in any one of claims 1-4.

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