Charging method and device, vehicle, charging pile, chip and storage medium

Abstract

The invention provides a charging method and device, a vehicle, a charging pile, a chip and a storage medium, and relates to the field of vehicle batteries, and the method comprises the steps: determining a target battery charging region where a power battery is located from a plurality of preset battery charging regions according to the current state parameter of the power battery in the vehicle; wherein different battery charging areas are associated with different charging strategies; and determining a charging request current value based on a target charging strategy associated with the target battery charging area, and charging the vehicle. Therefore, domain division and fine control of the charging process can be realized, the problem of charging over-limit caused by blind adoption of large-current charging under special working conditions such as low temperature is effectively avoided, and safety risks such as overvoltage, overheating and thermal runaway are remarkably reduced; and meanwhile, the charging rhythm is optimized on the premise of ensuring the charging safety, the charging efficiency is improved, the service life of the battery is prolonged, and the adaptability and intelligent control capability of the charging system to a complex environment are enhanced.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle battery technology, and more particularly to a charging method, apparatus, vehicle, charging pile, chip, and storage medium. Background Technology

[0002] Charging environments are significantly affected by seasonal changes, with special charging scenarios such as low temperatures occurring frequently. In low-temperature charging environments, to ensure charging efficiency, the battery is often heated to achieve fast charging. Related technologies often use larger charging currents to achieve faster charging, leading to charging over-limit issues and increasing the risk of vehicle damage during charging. Summary of the Invention

[0003] This disclosure proposes a charging method, apparatus, vehicle, charging pile, chip, and storage medium to at least partially solve one of the technical problems in the related art.

[0004] One embodiment of this disclosure proposes a charging method, including:

[0005] Based on the current state parameters of the power battery in the vehicle, the target battery charging area where the power battery is located is determined from multiple preset battery charging areas; wherein, different battery charging areas are associated with different charging strategies.

[0006] Based on the target charging strategy associated with the target battery charging area, a charging request current value is determined, and the vehicle is charged.

[0007] The charging method of this disclosure dynamically determines the target battery charging area where the power battery is currently located based on the current state parameters of the power battery, and determines the charging request current value based on the charging strategy associated with the target battery charging area. This achieves regionalized and refined control of the charging process, effectively avoiding charging over-limit problems caused by blindly using high current charging under special operating conditions such as low temperature, and significantly reducing safety risks such as overvoltage, overheating and thermal runaway. At the same time, it optimizes the charging rhythm while ensuring charging safety, improves charging efficiency and battery life, and enhances the adaptability and intelligent control capability of the charging system to complex environments.

[0008] As one possible implementation, determining the target battery charging region of the power battery from multiple preset battery charging regions based on the current state parameters of the power battery in the vehicle includes: determining the charging current capability of the power battery based on the battery temperature and state of charge (SOC) in the current state parameters; wherein the charging current capability is used to indicate the charging current that the power battery can withstand; and determining the target battery charging region of the power battery from the multiple preset battery charging regions based on the charging current capability.

[0009] Therefore, determining the charging current capability of the power battery at the current moment based on its current state parameters can improve the effectiveness and rationality of the charging current capability determination. Furthermore, based on a reasonable charging current capability, determining the target battery charging area of ​​the power battery can further improve the rationality and reliability of the determination results. Specifically, the charging request current value requested from the charging pile is determined based on the charging current capability of the power battery (used to indicate the charging current that the power battery can withstand or tolerate). This dynamic adjustment mechanism can maximize charging efficiency while ensuring charging safety, effectively avoiding charging efficiency losses caused by excessive current limiting in pursuit of absolute safety, or safety hazards such as thermal runaway caused by current exceeding limits. It can also intelligently adapt charging strategies to differentiated charging scenarios such as low-temperature environments and complex operating conditions, as well as the power distribution needs under different vehicle usage states, thereby significantly improving the stability and reliability of the charging process.

[0010] As one possible implementation, the plurality of preset battery charging regions are determined in advance by the following steps: dividing the allowable charging current capability range of the power battery according to a plurality of set charging current capabilities to obtain a plurality of battery charging regions; wherein the charging current capability of the power battery is within the target battery charging region.

[0011] Therefore, by pre-dividing the allowable charging current range of the power battery into multiple battery charging regions based on multiple preset charging current capabilities, the effectiveness and rationality of the preset battery charging regions can be improved.

[0012] As one possible implementation, the plurality of preset charging current capabilities include a preset first charging current capability and a preset second charging current capability, wherein the first charging current capability is greater than the second charging current capability. The plurality of preset battery charging regions include: a first battery charging region, wherein the lower limit of the first battery charging region is the first charging current capability; a second battery charging region, wherein the upper limit of the second battery charging region is the first charging current capability and the lower limit is the second charging current capability; and a third battery charging region, wherein the upper limit of the third battery charging region is the second charging current capability.

[0013] Therefore, based on the different values ​​of the first and second charging current capabilities, the allowable charging current capability range of the power battery can be divided into fine-grained segments, resulting in multiple battery charging regions with non-overlapping value ranges. This can further improve the rationality and reliability of the preset battery charging regions.

[0014] As one possible implementation, the target battery charging area includes a first battery charging area. Determining the charging request current value based on a target charging strategy associated with the target battery charging area includes: determining the required charging current value of the power battery based on the charging current capability of the power battery; and determining the charging request current value based on the sum of the required charging current value, a first current consumption value of a high-voltage load component in the vehicle, and a second current consumption value of a heating component in the vehicle; wherein the heating component is used to heat the power battery.

[0015] Therefore, when the target battery charging area where the power battery is located is the first battery charging area, it indicates that the power battery has relatively strong charging tolerance or overshoot capability. At this time, the charging request current value is determined based on the sum of the power battery's required charging current value, the first current consumption value of the high-voltage load component, and the second current consumption value of the heating component. This can not only effectively avoid charging over-limit problems and reduce the risk of safety accidents (such as vehicle fires during charging) during the charging process, ensuring the safety of the vehicle and its passengers, but also greatly improve the charging speed. In other words, it balances charging safety and charging speed, improving the user experience in charging scenarios.

[0016] As one possible implementation, the target battery charging area includes a second battery charging area. Determining the charging request current value based on a target charging strategy associated with the target battery charging area includes: adjusting the required charging current value of the power battery according to a set multiple to obtain an adjusted current value; wherein the required charging current value is determined based on the charging current capability of the power battery; the set multiple indicates the maximum allowable transient overshoot of the charging current of the power battery; and determining the charging request current value based on the sum of the adjusted current value and a first current consumption value of a high-voltage load component in the vehicle.

[0017] Therefore, when the target battery charging area where the power battery is located is the second battery charging area, it indicates that the charging tolerance or overshoot capability of the power battery is relatively poor. At this time, the charging request current value is determined based on the sum of the adjustment current value and the first consumption current value of the high-voltage load components in the vehicle. This can avoid the problem of charging over-limit and make the charging process safer and more reliable.

[0018] As one possible implementation, the target battery charging area includes a third battery charging area, and determining the charging request current value based on a target charging strategy associated with the target battery charging area includes: determining the charging request current value based on the sum of a first current consumption value of a high-voltage load component and a second current consumption value of a heating component in the vehicle.

[0019] Therefore, when the target battery charging area of ​​the power battery is the third battery charging area, it indicates that the power battery has poor overshoot tolerance. In this case, the power battery can be charged without charging. The charging request current value can be determined directly based on the sum of the first current consumption value of the high voltage load component and the second current consumption value of the heating component. This can further avoid the problem of charging over-limit and make the charging process safer and more reliable.

[0020] As one possible implementation, the target battery charging area includes a second battery charging area or a third battery charging area. Determining the charging request current value based on a target charging strategy associated with the target battery charging area includes: adjusting the required charging current value of the power battery according to a set multiple to obtain an adjusted current value; wherein the required charging current value is determined based on the charging current capability of the power battery; the set multiple indicates the maximum allowable transient overshoot of the charging current of the power battery; and determining the charging request current value based on the adjusted current value, a first current consumption value of the high-voltage load component in the vehicle, and a second current consumption value of the heating component; wherein the heating component is used to heat the power battery.

[0021] Therefore, by calculating the charging request current value in a targeted and tiered manner according to the different battery charging regions where the charging current capability of the power battery is located, it can be ensured that the charging current value does not exceed the charging safety boundary of the power battery, thereby further improving charging safety.

[0022] As one possible implementation, determining the charging request current value based on the regulating current value, the first current consumption value of the high-voltage load component in the vehicle, and the second current consumption value of the heating component includes: determining the heating power of the heating component based on the second current consumption value of the heating component and the heating resistance; determining a first request current value based on the sum of the regulating current value and the first current consumption value, and determining a second request current value based on the sum of the second current consumption value and the first current consumption value; and determining the charging request current value based on the first request current value, the second request current value, and the heating power.

[0023] Therefore, the charging request current value is determined not only based on the adjustment current value, the first current consumption value of the high-voltage load component in the vehicle and the second current consumption value of the heating component, but also based on the heating power of the heating component, which can further improve the rationality and reliability of the charging request current value determination.

[0024] As one possible implementation, determining the charging request current value based on the first requested current value, the second requested current value, and the heating power includes: in response to the heating power being greater than or equal to a set power, determining the charging request current value based on the maximum value among the first requested current value and the second requested current value.

[0025] Therefore, when the heating power of the heating components is relatively high, it indicates that the vehicle has a high heating demand, such as preheating the power battery in cold environments. In this case, using the sum of the current consumption of the heating components and the current consumption of the high-voltage load components as a factor in the charging request current value ensures sufficient current to meet the normal operation of the heating components and high-voltage load components, avoiding poor heating effect or malfunction of the high-voltage load components due to insufficient current. Simultaneously, a certain margin (set multiple) is added to the required charging current value determined based on the battery state to cope with some uncertainties during the charging process, such as slight changes in battery internal resistance and fluctuations in charging equipment, thereby ensuring the safety and efficiency of battery charging. Furthermore, by taking the greater of the two as the charging request current, the vehicle can flexibly select an appropriate charging current according to the actual situation. If the total current demand of the heating components and high-voltage load components is large, this demand is prioritized; if the charging current determined based on the battery state (i.e., the first requested current value) is larger, the charging demand of the power battery is prioritized. This charging strategy can optimize the charging process and improve charging efficiency while meeting the operational needs of various vehicle components.

[0026] As one possible implementation, determining the charging request current value based on the first requested current value, the second requested current value, and the heating power further includes: in response to the heating power being less than the set power, determining a third requested current value based on the sum of the required charging current value, the second consumed current value, and the first consumed current value; and determining the charging request current value based on the minimum value among the first requested current value, the second requested current value, and the third requested current value.

[0027] Therefore, when the heating power of the heating components is relatively low, it indicates that the vehicle's heating demand is relatively low. In this case, by taking the minimum of the three values ​​as the charging request current value, damage to the power battery due to excessive charging current can be avoided. The three values ​​consider the vehicle's charging and power consumption needs from different perspectives: the first request current value considers the safety margin of battery charging and the basic power consumption needs of high-voltage load components; the second request current considers the power consumption needs of the heating components and high-voltage load components; and the third request current comprehensively considers the power consumption needs of battery charging, heating components, and high-voltage load components. By taking the minimum of these three values, the most suitable charging current can be selected while meeting the vehicle's basic power consumption needs. This ensures the normal operation of the vehicle, protects the power battery, and reduces the risk of charging system failure due to excessive current. For example, it avoids problems such as overheating of the charging lines and damage to charging equipment caused by excessive current, improving the reliability and stability of the entire charging system.

[0028] Another embodiment of this disclosure proposes an alternative charging method, including:

[0029] Receive a target charging request sent by a vehicle; wherein the target charging request carries a charging request current value, which is determined from multiple preset battery charging areas based on the current state parameters of the power battery in the vehicle, and based on a target charging strategy associated with the target battery charging area; wherein different battery charging areas are associated with different charging strategies.

[0030] The vehicle is charged based on the requested charging current value.

[0031] The charging method of this disclosure dynamically determines the target battery charging area where the power battery is currently located based on the current state parameters of the power battery, and determines the charging request current value based on the charging strategy associated with the target battery charging area. This achieves regionalized and refined control of the charging process, effectively avoiding charging over-limit problems caused by blindly using high current charging under special operating conditions such as low temperature, and significantly reducing safety risks such as overvoltage, overheating and thermal runaway. At the same time, it optimizes the charging rhythm while ensuring charging safety, improves charging efficiency and battery life, and enhances the adaptability and intelligent control capability of the charging system to complex environments.

[0032] Another aspect of this disclosure provides a charging device, comprising:

[0033] The determination module is used to determine the target battery charging area where the power battery is located from multiple preset battery charging areas based on the current state parameters of the power battery in the vehicle; wherein different battery charging areas are associated with different charging strategies.

[0034] Based on the target charging strategy associated with the target battery charging area, a charging request current value is determined, and the vehicle is charged.

[0035] The charging device of this disclosure dynamically determines the target battery charging area where the power battery is currently located based on the current state parameters of the power battery, and determines the charging request current value based on the charging strategy associated with the target battery charging area. This achieves regionalized and refined control of the charging process, effectively avoiding charging over-limit problems caused by blindly using high current charging under special operating conditions such as low temperature, and significantly reducing safety risks such as overvoltage, overheating and thermal runaway. At the same time, it optimizes the charging rhythm while ensuring charging safety, improves charging efficiency and battery life, and enhances the adaptability and intelligent control capability of the charging system to complex environments.

[0036] As one possible implementation, the determining module is configured to: determine the charging current capability of the power battery based on the battery temperature and state of charge (SOC) in the current state parameters; wherein the charging current capability is used to indicate the charging current that the power battery is allowed to withstand; and determine the target battery charging region where the power battery is located from the plurality of preset battery charging regions based on the charging current capability.

[0037] Therefore, determining the charging current capability of the power battery at the current moment based on its current state parameters can improve the effectiveness and rationality of the charging current capability determination. Furthermore, based on a reasonable charging current capability, determining the target battery charging area of ​​the power battery can further improve the rationality and reliability of the determination results. Specifically, the charging request current value requested from the charging pile is determined based on the charging current capability of the power battery (used to indicate the charging current that the power battery can withstand or tolerate). This dynamic adjustment mechanism can maximize charging efficiency while ensuring charging safety, effectively avoiding charging efficiency losses caused by excessive current limiting in pursuit of absolute safety, or safety hazards such as thermal runaway caused by current exceeding limits. It can also intelligently adapt charging strategies to differentiated charging scenarios such as low-temperature environments and complex operating conditions, as well as the power distribution needs under different vehicle usage states, thereby significantly improving the stability and reliability of the charging process.

[0038] As one possible implementation, the multiple preset battery charging regions are predetermined by the following module: a division module, used to divide the allowable charging current capability range of the power battery according to multiple set charging current capabilities, so as to obtain multiple battery charging regions; wherein the charging current capability of the power battery is within the target battery charging region.

[0039] Therefore, by pre-dividing the allowable charging current range of the power battery into multiple charging zones based on multiple preset charging current capabilities, the effectiveness and rationality of the preset battery charging zones can be improved.

[0040] In another aspect of this disclosure, a charging device is provided, comprising:

[0041] A receiving module is used to receive a target charging request sent by a vehicle; wherein the target charging request carries a charging request current value, which is determined from multiple preset battery charging areas based on the current state parameters of the power battery in the vehicle, and based on a target charging strategy associated with the target battery charging area; wherein different battery charging areas are associated with different charging strategies.

[0042] A charging module is used to charge the vehicle based on the charging request current value.

[0043] The charging device of this disclosure dynamically determines the target battery charging area where the power battery is currently located based on the current state parameters of the power battery, and determines the charging request current value based on the charging strategy associated with the target battery charging area. This achieves regionalized and refined control of the charging process, effectively avoiding charging over-limit problems caused by blindly using high current charging under special operating conditions such as low temperature, and significantly reducing safety risks such as overvoltage, overheating and thermal runaway. At the same time, it optimizes the charging rhythm while ensuring charging safety, improves charging efficiency and battery life, and enhances the adaptability and intelligent control capability of the charging system to complex environments.

[0044] This disclosure also provides an embodiment of a vehicle, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to implement the charging method as described in the foregoing aspect.

[0045] In another aspect of this disclosure, a charging pile is provided, characterized in that it includes: a charging gun and a power supply control device, wherein the charging gun is connected to the power supply control device; the power supply control device is used to execute the charging method as described in the foregoing other aspect when it is determined that the charging gun is successfully connected to the vehicle.

[0046] Another aspect of this disclosure provides a chip including an interface circuit and a processing circuit coupled to each other, the interface circuit being used to input or output signals, and the processing circuit being configured to perform a charging method as described in one aspect above, or to perform a charging method as described in another aspect above.

[0047] In another aspect of this disclosure, a non-transitory computer-readable storage medium is provided, having stored thereon computer program instructions that, when executed by a processor, implement the charging method as described in the preceding aspect, or implement the charging method as described in the preceding aspect.

[0048] Another aspect of this disclosure provides a computer program product having a computer program stored thereon, which, when executed by a processor, implements the charging method as described in the preceding aspect, or implements the charging method as described in the preceding aspect.

[0049] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0050] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0051] Figure 1 A schematic flowchart of a charging method provided for an exemplary embodiment of the present disclosure;

[0052] Figure 2 A schematic flowchart of another charging method provided for an exemplary embodiment of the present disclosure;

[0053] Figure 3 A schematic flowchart of yet another charging method provided for an exemplary embodiment of the present disclosure;

[0054] Figure 4 A schematic flowchart of another charging method provided for an exemplary embodiment of the present disclosure;

[0055] Figure 5 A schematic flowchart of another charging method provided for an exemplary embodiment of the present disclosure;

[0056] Figure 6 A schematic flowchart of yet another charging method provided for an exemplary embodiment of the present disclosure;

[0057] Figure 7 A schematic flowchart of another charging method provided for an exemplary embodiment of the present disclosure;

[0058] Figure 8 A schematic diagram of the battery charging region where the charging current capability of the power battery provided for an exemplary embodiment of this disclosure is located under different SOC and temperature conditions.

[0059] Figure 9 A schematic diagram illustrating the DC charging request control strategy provided for an exemplary embodiment of this disclosure;

[0060] Figure 10 A schematic diagram of the structure of a charging device provided for an exemplary embodiment of the present disclosure;

[0061] Figure 11 A schematic diagram of the structure of a charging device provided for an exemplary embodiment of the present disclosure;

[0062] Figure 12 A block diagram illustrating a vehicle according to an exemplary embodiment;

[0063] Figure 13 This is a schematic diagram of the structure of a chip proposed according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0064] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0065] In related technologies, charging heating solutions mainly include the following:

[0066] Option 1: Self-heating of the power battery: For some low-cost vehicles, there is no separate heating source for the power battery. Heating is mainly achieved by the self-heating of the power battery during the charging process. That is, the temperature is increased by the heat (Joule heating) generated by the internal resistance of the power battery during the charging process.

[0067] However, the drawbacks of Scheme 1 are: low heating efficiency, the internal resistance of the power battery is small in low temperature environment, the self-generated heat is insufficient, and it is difficult to quickly raise the temperature of the power battery; limited charging speed, the charging efficiency of the power battery is low in low temperature environment, which may lead to a significant extension of charging time; the life of the power battery may be affected, low temperature charging is prone to lithium dendrite precipitation, which accelerates battery aging.

[0068] The second option, Option 2, involves heating the power battery using a separate heating element. This typically involves two methods:

[0069] Method 1: In pursuit of faster charging speeds, charging stations must simultaneously meet the power demands of both the battery charging and heating components. However, this method carries the risk of overcharging, and in extreme cases, could even lead to serious safety incidents such as vehicle fires during charging.

[0070] Method 2: For vehicles without strict requirements on charging speed, the charging station only meets the charging needs of the power battery. That is, the output power requested by the vehicle from the charging station equals the charging power required by the power battery. Although this method is relatively safe, it will result in a loss of charging speed. In this case, the heating components need to be powered by other power sources (such as the vehicle's low-voltage power supply) or operate at reduced power.

[0071] The third option, Scheme 3, involves controlling the motor to stall (i.e., the motor is not rotating but is powered on), using the resistance of the motor windings to heat the coolant of the power battery or directly heating the power battery.

[0072] However, the drawbacks of Scheme 3 are: it is technically complex, requires precise control of motor stall time and current to avoid motor damage, and needs to be integrated into the vehicle thermal management system, which places high demands on both software and hardware.

[0073] Therefore, in view of at least one of the problems existing in the above-mentioned related technologies, this disclosure proposes a charging method, device, vehicle, charging pile, chip and storage medium.

[0074] The charging method, apparatus, vehicle, charging pile, chip, and storage medium of this disclosure are described below with reference to the accompanying drawings. Before specifically describing the embodiments of this disclosure, commonly used technical terms are first introduced for ease of understanding:

[0075] Charging current capability indicates the charging current that a power battery is allowed to withstand or tolerate at the current moment. It should be noted that the charging current capability is dynamic and will change with the actual state data or current state parameters of the power battery (such as battery temperature, state of charge (SOC), etc.), rather than being a fixed value.

[0076] C: In the battery industry, "C" is a unit of ratio used to express the charging and discharging rate of a battery, also known as "rate".

[0077] Figure 1 This is a schematic flowchart of a charging method provided for an exemplary embodiment of the present disclosure.

[0078] It should be noted that the charging method of this disclosure can be applied to a charging device. In some possible embodiments, the charging device can be configured in an electronic device or a chip so that the electronic device or chip can perform the charging function. Additionally, in some possible embodiments, the charging device can also be software within an electronic device.

[0079] In any embodiment of this disclosure, the chip can be integrated into an electronic device. The chip includes a Central Processing Unit (CPU), an Image Signal Processing (ISP), an Application-Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Field-Programmable Gate Array (FPGA), a System-on-a-Chip (SoC), a Reduced Instruction Set Computer (RISC), etc., which will not be listed here.

[0080] The electronic devices included here include, but are not limited to, vehicles and terminals attached to vehicles. A terminal is a user-side entity used to receive or transmit signals, such as a mobile phone. A terminal can also be called a terminal device (UE), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. Terminals can be mobile phones with communication functions, wearable devices, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc. The embodiments disclosed herein do not limit the specific technologies or device forms used in the terminals.

[0081] The vehicle may be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, or other types of vehicles, and this disclosure does not limit this.

[0082] like Figure 1 As shown, the charging method may include the following steps S101 to S102:

[0083] Step S101: Based on the current state parameters of the power battery in the vehicle, determine the target battery charging area where the power battery is located from multiple preset battery charging areas; wherein, different battery charging areas are associated with different charging strategies.

[0084] The current state parameters of the power battery include, but are not limited to, the following parameters: battery temperature, battery voltage, and state of charge (SOC).

[0085] The battery temperature can be the instantaneous temperature of the power battery at a certain moment (such as the current moment), or the average temperature over a certain period of time (such as the current period of time). This disclosure does not limit this.

[0086] Among them, multiple battery charging areas are preset. For example, multiple battery charging areas can be pre-divided according to the state parameters that allow the power battery to operate.

[0087] Each battery charging region has an associated charging strategy, and different battery charging regions are associated with different charging strategies.

[0088] Each charging strategy is pre-set and is used to calculate the charging current value requested from the charging pile at each time point, which is referred to as the charging request current value in this disclosure.

[0089] Among them, charging piles include, but are not limited to: DC charging piles and AC charging piles.

[0090] In this embodiment of the disclosure, the current state parameters of the power battery in the vehicle can be obtained. For example, relevant sensors can be used to measure the current state parameters of the power battery, and based on the current state parameters, the battery charging area where the power battery is located at the current moment can be determined from multiple preset battery charging areas. In this disclosure, this area is referred to as the target battery charging area.

[0091] Step S102: Based on the target charging strategy associated with the target battery charging area, determine the charging request current value and charge the vehicle.

[0092] In this embodiment of the disclosure, the charging request current value that the vehicle needs to request from the charging pile at the current moment can be determined according to the charging strategy associated with the target battery charging area (hereinafter referred to as the target charging strategy), and a target charging request carrying the charging request current value can be sent to the charging pile so that the charging pile can charge the vehicle according to the charging request current value carried in the target charging request.

[0093] For example, the target charging strategy and the first current consumption value of the high-voltage load components in the vehicle can be combined to determine the charging request current value at the current moment, and a target charging request carrying the charging request current value can be sent to the charging pile so that the charging pile can charge the vehicle according to the charging request current value carried in the target charging request.

[0094] High-voltage load components include, but are not limited to: compressors, DC-DC converters, etc.

[0095] The first current consumption value of the high-voltage load component refers to the actual current consumption value of the high-voltage load component at the current moment.

[0096] The charging method of this disclosure dynamically determines the target battery charging area where the power battery is currently located based on the current state parameters of the power battery, and determines the charging request current value based on the charging strategy associated with the target battery charging area. This achieves regionalized and refined control of the charging process, effectively avoiding charging over-limit problems caused by blindly using high current charging under special operating conditions such as low temperature, and significantly reducing safety risks such as overvoltage, overheating and thermal runaway. At the same time, it optimizes the charging rhythm while ensuring charging safety, improves charging efficiency and battery life, and enhances the adaptability and intelligent control capability of the charging system to complex environments.

[0097] As one possible implementation method, Figure 2 A schematic flowchart of another charging method provided for an exemplary embodiment of this disclosure.

[0098] It should be noted that the charging method can be executed alone, or it can be executed together with any embodiment of this disclosure or any possible implementation in the embodiment, or it can be executed together with any technical solution in the related technology. The embodiments of this disclosure do not limit this.

[0099] like Figure 2 As shown, the charging method may include the following steps S201 to S203:

[0100] Step S201: Determine the charging current capability of the power battery based on the battery temperature and SOC in the current state parameters of the power battery in the vehicle; wherein, the charging current capability is used to indicate the charging current that the power battery is allowed to withstand.

[0101] The charging current capability indicates the charging current that the power battery is allowed to withstand or tolerate at the current moment. That is, the higher the charging current that the power battery can tolerate, the higher its charging current capability; conversely, the lower the charging current that the power battery can tolerate, the lower its charging current capability.

[0102] In this embodiment of the disclosure, the charging current capability of the power battery can be determined based on the current state parameters of the power battery at the current moment. For example, a lookup table method can be used to determine the charging current capability of the power battery based on the battery temperature and actual SOC in the current state parameters of the power battery at the current moment.

[0103] As one possible approach, the allowable charging current of the power battery can be tested in advance under different operating conditions (including different battery temperatures and SOCs) to obtain the charging current capability of the power battery under different operating conditions. Based on the test results, a first mapping table associated with the power battery can be configured, wherein the first mapping table records the mapping relationship between different battery temperatures, SOCs and charging current capabilities.

[0104] The battery temperature and SOC may differ under different operating conditions, or the battery temperature and SOC may not be exactly the same under different operating conditions.

[0105] For example, the allowable charging current of the power battery can be tested under typical operating conditions (such as the battery temperature of the power battery being the typical temperature and the SOC being the typical SOC) and used as the nominal current. Similarly, the allowable charging current of the power battery can be tested under different operating conditions, so that the charging current capability under different operating conditions can be determined based on the ratio of the charging current obtained under different operating conditions to the nominal current.

[0106] For example, the allowable charging current (i.e., nominal current) of the power battery can be tested under typical operating conditions (such as the battery temperature being typical and the SOC being typical). The nominal current corresponds to a charging current capability of 1C. Assuming the nominal current is 120mA, if the allowable charging current of the power battery under operating condition 1 is 10mA, then the charging current capability of the power battery under operating condition 1 is 0.08C. If the allowable charging current of the power battery under operating condition 2 is 60mA, then the charging current capability of the power battery under operating condition 2 is 0.5C. If the allowable charging current of the power battery under operating condition 3 is 90mA, then the charging current capability of the power battery under operating condition 3 is 0.75C. If the allowable charging current of the power battery under operating condition 4 is 150mA, then the charging current capability of the power battery under operating condition 4 is 1.25C, and so on. These are not all listed here. Then, the battery temperature, SOC and 0.08C corresponding to operating condition 1 can be associated and stored in the first mapping table associated with the power battery, the battery temperature, SOC and 0.5C corresponding to operating condition 2 can be associated and stored in the first mapping table, the battery temperature, SOC and 0.75C corresponding to operating condition 3 can be associated and stored in the first mapping table, and the battery temperature, SOC and 1.25C corresponding to operating condition 4 can be associated and stored in the first mapping table.

[0107] It should be noted that the above is only an example of four operating conditions, but this disclosure is not limited to this. According to the application requirements, the battery temperature and SOC can be finely divided to obtain multiple different temperature values ​​and multiple different SOCs. Thus, multiple temperature values ​​and multiple SOCs can be combined to obtain multiple operating conditions, wherein the battery temperature and / or SOC corresponding to different operating conditions are different.

[0108] Therefore, in this disclosure, a lookup table method can be used to obtain the charging current capability of the power battery at the current moment based on the current state parameters of the power battery. That is, the charging current capability of the power battery at the current moment can be obtained by looking up the first mapping table associated with the power battery based on the current battery temperature and SOC.

[0109] When performing a query, the current battery temperature and SOC of the power battery can be used as query conditions to perform a matching search in the first mapping table. If the first mapping table contains a record that completely corresponds to the battery temperature and SOC of the power battery, the corresponding charging current capability can be directly obtained from that record.

[0110] However, due to the complexity and diversity of real-world application scenarios, there may be situations where the battery temperature and / or SOC of the power battery are not included in the first mapping table. To address this special case, one possible approach is to use interpolation techniques to estimate the charging current capability of the power battery at the current moment. That is, based on the existing data points in the first mapping table that are adjacent to the battery temperature and SOC of the power battery, a suitable interpolation algorithm (such as linear interpolation, cubic spline interpolation, etc., the specific interpolation algorithm can be selected according to actual needs and data characteristics) is used to calculate the charging current capability of the power battery at the current moment.

[0111] Step S202: Based on the charging current capability, determine the target battery charging area where the power battery is located from multiple preset battery charging areas; wherein, different battery charging areas are associated with different charging strategies.

[0112] Multiple battery charging zones are pre-defined. For example, the allowable charging current capability range of the power battery can be divided according to multiple set charging current capabilities to obtain multiple battery charging zones.

[0113] In other words, the upper and lower limits of multiple battery charging regions can be determined based on multiple set charging current capabilities, and the value ranges of different battery charging regions do not overlap.

[0114] For example, let N be the number of charging current capabilities set, namely: Thre1, Thre2, Thre3, ..., Thre N And Thre1 <Thre2<Thre3<…<Thre N For example, the charging current capability ranges corresponding to multiple battery charging regions are: (-∞, Thre1), [Thre1, Thre2), [Thre2, Thre3), [Thre...] N (,+∞).

[0115] In summary, by pre-dividing the allowable charging current range of the power battery into multiple charging zones based on multiple preset charging current capabilities, the effectiveness and rationality of preset battery charging zones can be improved.

[0116] As an example, considering multiple preset charging current capabilities, including a preset first charging current capability and a preset second charging current capability, where the first charging current capability is greater than the second charging current capability, the multiple preset battery charging regions may include the following three non-overlapping battery charging regions:

[0117] 1. A first battery charging region; wherein the lower limit of the first battery charging region is a first charging current capability. For example, the first charging current capability is denoted as X, and the range of the charging current capability corresponding to the first battery charging region is, for example, [X, +∞).

[0118] The first charging current capability is a calibration capability associated with the power battery. It should be noted that the first charging current capability may differ for different power battery models. For example, the first charging current capability may be 0.35C, 0.38C, or 0.40C.

[0119] 2. A second battery charging region; wherein the upper limit of the first battery charging region is the first charging current capability, and the lower limit is the second charging current capability. For example, the second charging current capability is labeled Y, and the range of the charging current capability corresponding to the second battery charging region is, for example, [Y, X).

[0120] The second charging current capability is also a calibration capability associated with the power battery, and it is less than the first charging current capability. It should be noted that the second charging current capability may differ for different power battery models. For example, the second charging current capability may be 0.12C, 0.15C, or 0.17C.

[0121] 3. A third battery charging region; wherein the upper limit of the first battery charging region is the second charging current capability. For example, the range of the charging current capability corresponding to the third battery charging region is (-∞, Y).

[0122] Understandably, by dividing the allowable charging current range of the power battery into finer-grained segments based on the first and second charging current capabilities with different values, multiple battery charging regions with non-overlapping value ranges can be obtained, which can further improve the rationality and reliability of the preset battery charging regions.

[0123] In this embodiment of the disclosure, the target battery charging region where the power battery is located can be determined from multiple preset battery charging regions based on the charging current capability of the power battery at the current moment; wherein the charging current capability of the power battery is within the target battery charging region.

[0124] Step S203: Based on the target charging strategy associated with the target battery charging area, determine the charging request current value and charge the vehicle.

[0125] It should be noted that the explanation of step S203 can be found in the relevant description in any embodiment of this disclosure, and will not be repeated here.

[0126] The charging method of this disclosure determines the charging current capability of the power battery at the current moment based on the current state parameters of the power battery. This improves the effectiveness and rationality of the determination of the charging current capability. Furthermore, based on the reasonable charging current capability, the target battery charging area of ​​the power battery can be determined, which further improves the rationality and reliability of the determination result. The charging request current value requested from the charging pile is determined based on the charging current capability of the power battery (used to indicate the charging current that the power battery is allowed to withstand or tolerate). This dynamic adjustment mechanism can maximize charging efficiency while ensuring charging safety, effectively avoiding charging efficiency losses caused by excessive current limiting in pursuit of absolute safety, or safety hazards such as thermal runaway caused by current exceeding limits. It can also intelligently adapt the charging strategy to differentiated charging scenarios such as low-temperature environments and complex operating conditions, as well as the power distribution needs under different vehicle usage states, thereby significantly improving the stability and reliability of the charging process.

[0127] As one possible implementation method, Figure 3 A schematic flowchart of yet another charging method provided for an exemplary embodiment of the present disclosure.

[0128] It should be noted that the charging method can be executed alone, or it can be executed together with any embodiment of this disclosure or any possible implementation in the embodiment, or it can be executed together with any technical solution in the related technology. The embodiments of this disclosure do not limit this.

[0129] like Figure 3 As shown, the charging method may include the following steps S301 to S303:

[0130] Step S301: Based on the current state parameters of the power battery in the vehicle, determine the target battery charging area where the power battery is located from multiple preset battery charging areas; wherein, different battery charging areas are associated with different charging strategies.

[0131] It should be noted that the explanation of step S301 can be found in the relevant description in any embodiment of this disclosure, and will not be repeated here.

[0132] Step S302: In response to the target battery charging area including the first battery charging area, determine the required charging current value of the power battery based on the charging current capability of the power battery.

[0133] The lower limit of the first battery charging region is a preset first charging current capability, and the charging current capability of the power battery at the current moment is within the first battery charging region; wherein, the charging current capability is determined based on the battery temperature and SOC in the current state parameters of the power battery.

[0134] As an example, the required charging current value of a power battery can be obtained by multiplying its charging current capability by the nominal current under typical operating conditions.

[0135] As another example, a lookup table method can be used. Based on the charging current capability of the power battery, a second mapping table associated with the power battery is consulted to obtain the required charging current value of the power battery at the current moment. This second mapping table records the mapping relationships between different charging current capabilities and required charging current values.

[0136] For example, the first mapping table may record the mapping relationship between different battery temperatures, SOC and charging current capabilities, and the second mapping table may record the mapping relationship between different required charging current values ​​and the charging current capabilities in the first mapping table.

[0137] The required charging current value corresponding to each charging current capability can be determined by multiplying the charging current capability by the nominal current under typical operating conditions.

[0138] Step S303: Determine the charging request current value based on the sum of the required charging current value, the first current consumption value of the high-voltage load component in the vehicle, and the second current consumption value of the heating component in the vehicle, and charge the vehicle.

[0139] The explanations and descriptions of the high-voltage load components and the first current consumption value in the aforementioned embodiments also apply to this embodiment, and will not be repeated here.

[0140] The heating element (or heater) is used to heat the power battery.

[0141] The second current consumption value of the heating element includes the effective current value of the heating element, where the effective current value is the actual heating power of the heating element. Where D is the duty cycle, i.e., the high-level time (T) on The ratio of ) to the time of a complete cycle (T).

[0142] It should be noted that when the target battery charging area where the power battery is located is the first battery charging area, if the charging current capability of the power battery at the current moment is greater than or equal to the preset first charging current capability, it indicates that the charging tolerance or overshoot capability of the power battery is relatively strong and can cover the peak current and overshoot current of the heating component. In this case, in order to improve charging efficiency, in this disclosure, the sum of the required charging current value of the power battery, the first current consumption value of the high voltage load component, and the second current consumption value of the heating component can be used as the charging request current value requested from the charging pile.

[0143] The charging method of this embodiment indicates that the charging tolerance or overshoot capability of the power battery is relatively strong when the target battery charging area is the first battery charging area. In this case, the charging request current value is determined based on the sum of the power battery's required charging current value, the first current consumption value of the high-voltage load component, and the second current consumption value of the heating component. This not only effectively avoids charging over-limit problems and reduces the risk of safety accidents (such as vehicle fires during charging) during the charging process, ensuring the safety of the vehicle and its occupants, but also greatly improves the charging speed. In other words, it balances charging safety and charging speed, improving the user experience in charging scenarios.

[0144] As one possible implementation method, Figure 4 A schematic flowchart of another charging method provided for an exemplary embodiment of the present disclosure.

[0145] It should be noted that the charging method can be executed alone, or it can be executed together with any embodiment of this disclosure or any possible implementation in the embodiment, or it can be executed together with any technical solution in the related technology. The embodiments of this disclosure do not limit this.

[0146] like Figure 4 As shown, the charging method may include the following steps S401 to S404:

[0147] Step S401: Based on the current state parameters of the power battery in the vehicle, determine the target battery charging area where the power battery is located from multiple preset battery charging areas; wherein, different battery charging areas are associated with different charging strategies.

[0148] It should be noted that the explanation of step S401 can be found in the relevant description in any embodiment of this disclosure, and will not be repeated here.

[0149] In step S402, in response to the target battery charging area including the second battery charging area, the required charging current value of the power battery is determined according to the charging current capability of the power battery.

[0150] The upper limit of the second battery charging region is a preset first charging current capability, and the lower limit is a preset second charging current capability. Furthermore, the charging current capability of the power battery falls within this second battery charging region; the charging current capability is determined based on the battery temperature and SOC (State of Charge) parameters of the power battery's current state.

[0151] It should be noted that the explanation of step S402 can be found in the relevant description in any embodiment of this disclosure, and will not be repeated here.

[0152] Step S403: Adjust the required charging current value of the power battery according to the set multiple to obtain the adjusted current value; wherein, the set multiple is used to indicate the maximum multiple of the actual allowable transient overshoot of the charging current of the power battery.

[0153] The set factor indicates the maximum allowable transient overshoot of the charging current by the power battery. The set factor is a calibration parameter associated with the power battery and is greater than 1. For example, a set factor of 1.03 is used to indicate that the transient charging current of the power battery is allowed to exceed the steady-state charging current capability by 3%.

[0154] It should be noted that when the target battery charging area where the power battery is located is the second battery charging area, if the charging current capability of the power battery at the current moment is less than the first charging current capability but greater than the second charging current capability, it indicates that the charging tolerance or overshoot capability of the power battery is relatively poor. In this case, in order to avoid charging over-limit problems and reduce the risk of safety accidents (such as vehicle fire during charging), the peak current of the heating component cannot be directly covered.

[0155] In this disclosure, firstly, the required charging current value of the power battery can be determined based on the charging current capability of the power battery at the current moment. Then, the required charging current value can be adjusted according to a set multiplier to obtain an adjusted current value. That is, the adjusted current value = required charging current value * set multiplier.

[0156] Step S404: Determine the charging request current value based on the sum of the adjustment current value and the first current consumption value of the high-voltage load components in the vehicle, and charge the vehicle.

[0157] In this embodiment of the disclosure, when the target battery charging area where the power battery is located is the second battery charging area, the power battery is allowed to charge, and the peak charging current is allowed to exceed the battery capacity by a set multiple, but the charging current value is not allowed to be over-adjusted. At this time, the charging request current value requested from the charging pile can be determined based on the sum of the power battery's regulating current value and the first consumption current value of the high-voltage load component.

[0158] For example, if the second charging current capability ≤ the charging current capability of the power battery < the first charging current capability, then the charging request current value = set multiple * required charging current value (such as the current value obtained by querying the second mapping table, referred to as the table lookup current value) + the first consumption current value of the high voltage load component.

[0159] In the charging method of this embodiment, when the target battery charging area where the power battery is located is the second battery charging area, it indicates that the charging tolerance or overshoot capability of the power battery is relatively poor. In this case, the charging request current value is determined based on the sum of the adjustment current value and the first consumption current value of the high-voltage load component in the vehicle, which can avoid the problem of charging over-limit and make the charging process safer and more reliable.

[0160] As one possible implementation method, Figure 5 A schematic flowchart of another charging method provided for an exemplary embodiment of the present disclosure.

[0161] It should be noted that the charging method can be executed alone, or it can be executed together with any embodiment of this disclosure or any possible implementation in the embodiment, or it can be executed together with any technical solution in the related technology. The embodiments of this disclosure do not limit this.

[0162] like Figure 5 As shown, the charging method may include the following steps S501 to S502:

[0163] Step S501: Based on the current state parameters of the power battery in the vehicle, determine the target battery charging area where the power battery is located from multiple preset battery charging areas; wherein, different battery charging areas are associated with different charging strategies.

[0164] It should be noted that the explanation of step S501 can be found in the relevant description in any embodiment of this disclosure, and will not be repeated here.

[0165] In step S502, in response to the target battery charging area including the third battery charging area, a charging request current value is determined based on the sum of the first current consumption value of the high-voltage load component in the vehicle and the second current consumption value of the heating component, and the vehicle is charged.

[0166] The upper limit of the third battery charging area is the preset second charging current capability, and the charging current capability of the power battery at the current moment is within the third battery charging area; wherein, the charging current capability is determined based on the battery temperature and SOC in the current state parameters of the power battery.

[0167] In this embodiment of the disclosure, when the target battery charging area where the power battery is located is the third battery charging area, if the charging current capability of the power battery is lower than the preset second charging current capability, it indicates that the power battery has poor overshoot tolerance. At this time, the power battery can be left uncharged, and the charging request current value can be determined directly based on the sum of the first current consumption value of the high-voltage load component in the vehicle and the second current consumption value of the heating component.

[0168] For example, if the charging current capability of the power battery is less than the second charging current capability, then the charging request current value = the second current consumption value of the heating component + the first current consumption value of the high voltage load component.

[0169] In the charging method of this embodiment, when the target battery charging area where the power battery is located is the third battery charging area, it indicates that the power battery has poor overshoot tolerance. In this case, the power battery can be charged without charging. The charging request current value can be determined directly based on the sum of the first current consumption value of the high voltage load component and the second current consumption value of the heating component. This can further avoid the charging over-limit problem and make the charging process safer and more reliable.

[0170] As one possible implementation method, Figure 6 A schematic flowchart of yet another charging method provided for an exemplary embodiment of the present disclosure.

[0171] It should be noted that the charging method can be executed alone, or it can be executed together with any embodiment of this disclosure or any possible implementation in the embodiment, or it can be executed together with any technical solution in the related technology. The embodiments of this disclosure do not limit this.

[0172] like Figure 6 As shown, the charging method may include the following steps S601 to S604:

[0173] Step S601: Based on the current state parameters of the power battery in the vehicle, determine the target battery charging area where the power battery is located from multiple preset battery charging areas; wherein, different battery charging areas are associated with different charging strategies.

[0174] In step S602, in response to the target battery charging area including a second battery charging area or a third battery charging area, the required charging current value of the power battery is determined according to the charging current capability of the power battery.

[0175] Step S603: Adjust the required charging current value of the power battery according to the set multiple to obtain the adjusted current value; wherein, the set multiple is used to indicate the maximum multiple of the actual allowable transient overshoot of the charging current of the power battery.

[0176] It should be noted that the explanations of steps S601 to S603 can be found in the relevant descriptions in any embodiment of this disclosure, and will not be repeated here.

[0177] Step S604: Determine the charging request current value based on the adjustment current value, the first current consumption value of the high-voltage load component in the vehicle, and the second current consumption value of the heating component, and charge the vehicle.

[0178] The heating element is used to heat the power battery.

[0179] It should be noted that the explanations of the high-voltage load components and heating components in the foregoing embodiments also apply to this embodiment, and will not be repeated here.

[0180] In this embodiment of the disclosure, the charging request current value requested from the charging pile can be determined by comprehensively adjusting the current value, the first current consumption value of the high-voltage load component in the vehicle, and the second current consumption value of the heating component, and the vehicle can be charged.

[0181] In any embodiment of this disclosure, the heating power of the heating component can be calculated based on the second current consumption value and the heating resistance of the heating component in the vehicle. For example, the heating power = second current consumption value * second current consumption value * heating resistance. The first requested current value is determined based on the sum of the adjustment current value and the first current consumption value, and the second requested current value is determined based on the sum of the second current consumption value and the first current consumption value. Thus, in this disclosure, the charging requested current value can be determined by comprehensively considering the first requested current value, the second requested current value, and the heating power.

[0182] Therefore, the charging request current value is determined not only based on the adjustment current value, the first current consumption value of the high-voltage load component in the vehicle and the second current consumption value of the heating component, but also based on the heating power of the heating component, which can further improve the rationality and reliability of the charging request current value determination.

[0183] As an example, when the heating power of the heating element is greater than or equal to the set power, the charging request current value can be determined based on the maximum value between the first request current value and the second request current value.

[0184] The set power is a power threshold preset for the heating component. For example, the set power is 4.7kW, 4.9kW, 5.2kW, etc.

[0185] That is, if the heating power is greater than or equal to the set power, then the charging request current = max{set multiple * required charging current value (e.g., lookup table current value) + first current consumption value of high voltage load component; second current consumption value of heating component + first current consumption value of high voltage load component}.

[0186] Therefore, when the heating power of the heating components is relatively high, it indicates that the vehicle has a high heating demand, such as preheating the power battery in cold environments. In this case, the sum of the current consumption of the heating components and the current consumption of the high-voltage load components is used as a factor in the charging request current value. This ensures that there is sufficient current to meet the normal operation of the heating components and high-voltage load components, avoiding poor heating effect or malfunction of high-voltage load components due to insufficient current. At the same time, a certain margin (set multiple) is added to the required charging current value determined based on the battery status to cope with some uncertainties in the charging process, such as slight changes in battery internal resistance and fluctuations in charging equipment, thereby ensuring the safety and efficiency of battery charging.

[0187] Understandably, by taking the higher of the two values ​​as the requested charging current, the vehicle can flexibly select an appropriate charging current based on actual conditions. If the total current demand of heating components and high-voltage load components is high, then this demand will be prioritized; if the charging current determined based on the battery state (i.e., the first requested current value, plus the current consumed by the high-voltage load components after considering margin) is higher, then the charging demand of the power battery will be prioritized. This charging strategy can optimize the charging process and improve charging efficiency as much as possible while meeting the operating requirements of various vehicle components.

[0188] As another example, when the heating power of the heating component is less than the set power, a third requested current value can be determined based on the sum of the required charging current value, the second consumed current value, and the first consumed current value, and a charging request current value can be determined based on the minimum value among the first requested current value, the second requested current value, and the third requested current value.

[0189] For example, if the heating power is less than the set power, then the charging request current value = min{set multiple * required charging current value (e.g., lookup table current value) + first current consumption value of high voltage load component; required charging current value + second current consumption value of heating component + first current consumption value of high voltage load component; second current consumption value of heating component + first current consumption value of high voltage load component}.

[0190] Therefore, when the heating power of the heating components is relatively low, it indicates that the vehicle's heating demand is relatively low. In this case, by taking the minimum of the three values ​​as the charging request current value, damage to the power battery due to excessive charging current can be avoided. The three values ​​consider the vehicle's charging and power consumption needs from different perspectives: the first request current value considers the safety margin of battery charging and the basic power consumption needs of high-voltage load components; the second request current considers the power consumption needs of the heating components and high-voltage load components; and the third request current comprehensively considers the power consumption needs of battery charging, heating components, and high-voltage load components. By taking the minimum of these three values, the most suitable charging current can be selected while meeting the vehicle's basic power consumption needs. This ensures the normal operation of the vehicle, protects the power battery, and reduces the risk of charging system failure due to excessive current. For example, it avoids problems such as overheating of the charging lines and damage to charging equipment caused by excessive current, improving the reliability and stability of the entire charging system.

[0191] The charging method of this disclosure calculates the charging request current value in a targeted and graded manner according to the different battery charging regions where the charging current capability of the power battery is located. This ensures that there is no situation where the charging current value exceeds the charging safety boundary of the power battery, thereby further improving charging safety.

[0192] As one possible implementation method, Figure 7 A schematic flowchart of another charging method provided for an exemplary embodiment of the present disclosure.

[0193] It should be noted that the charging method can be executed alone, or it can be executed together with any embodiment of this disclosure or any possible implementation in the embodiment, or it can be executed together with any technical solution in the related technology. The embodiments of this disclosure do not limit this.

[0194] like Figure 7 As shown, this charging method can be performed by a charging station, including the following steps S701 to S702:

[0195] Step S701: Receive a target charging request sent by the vehicle; wherein the target charging request carries a charging request current value, which is determined based on the current state parameters of the power battery in the vehicle, from multiple preset battery charging areas to determine the target battery charging area where the power battery is located, and based on the target charging strategy associated with the target battery charging area; wherein different battery charging areas are associated with different charging strategies.

[0196] Step S702: Charge the vehicle based on the charging request current value.

[0197] It should be noted that the explanations and descriptions of the vehicle side in the foregoing embodiments also apply to this embodiment, and the implementation principle is similar, so they will not be repeated here.

[0198] The charging method of this disclosure dynamically determines the target battery charging area where the power battery is currently located based on the current state parameters of the power battery, and determines the charging request current value based on the charging strategy associated with the target battery charging area. This achieves regionalized and refined control of the charging process, effectively avoiding charging over-limit problems caused by blindly using high current charging under special operating conditions such as low temperature, and significantly reducing safety risks such as overvoltage, overheating and thermal runaway. At the same time, it optimizes the charging rhythm while ensuring charging safety, improves charging efficiency and battery life, and enhances the adaptability and intelligent control capability of the charging system to complex environments.

[0199] In any embodiment of this disclosure, taking a DC charging pile as an example, and considering multiple preset charging current capabilities including a preset first charging current capability and a preset second charging current capability, in a DC charging scenario, and when the vehicle uses a heating component to heat the power battery, considering the different overshoot current tolerance capabilities of the power battery under different charging current capabilities, and the safety boundaries of the power battery, to ensure that the power battery will not experience risks such as lithium plating, this disclosure can refine the charging current capability of the power battery according to the battery temperature and SOC as follows: Figure 8 The three battery charging zones shown (blue, orange, and green) are intended to ensure that there is no overcharging of the power battery.

[0200] The blue area indicates that the power battery has poor tolerance to overshoot. The peak charging current of the power battery is allowed to exceed the battery's set capacity by a factor of 1. In scenarios where the power battery is being charged and discharged, it does not charge at all.

[0201] Orange zone: This zone allows charging. The peak charging current of the power battery is allowed to exceed the battery's set capacity by a factor of 1, but the charging current is not allowed to be over-adjusted.

[0202] Green area: The power battery has strong charging tolerance and can cover the peak current and overshoot current of the heating components.

[0203] It should be noted that, Figure 8 The blank area in the diagram refers to the boundary between the blue and orange areas. It can be classified as either the blue area or the orange area. This embodiment of the present disclosure does not impose any restrictions on this.

[0204] As an example, the DC charging request control strategy provided in this disclosure includes:

[0205] 1. If the charging current capability of the power battery is in the green zone, that is, the charging current capability of the power battery is greater than or equal to the first charging current capability, then the charging request current value = BMS lookup table current value (referred to as the demand charging current value in this disclosure) + the current consumption value of the heating component + the current consumption value of the non-heating component (i.e., the high-voltage load component); where BMS is the abbreviation for Battery Management System.

[0206] 2. If the charging current capability of the power battery is in the blue or orange zone, that is, the charging current capability of the power battery is less than the first charging current capability, then:

[0207] If the heating power of the heating component is greater than or equal to the set power, then the charging request current value = max{set multiple * BMS lookup table current value + current consumption value of non-heating component (i.e., high-voltage load component); current consumption value of heating component + current consumption value of non-heating component (i.e., high-voltage load component)}.

[0208] If the heating power of the heating component is less than the set power, then the charging request current value = min{set multiple * BMS lookup table current value + current consumption value of non-heating component (i.e., high-voltage load component); BMS lookup table current value + current consumption value of heating component + current consumption value of non-heating component (i.e., high-voltage load component); current consumption value of heating component + current consumption value of non-heating component (i.e., high-voltage load component)}.

[0209] For example, the principle of the DC charging request control strategy can be as follows: Figure 9 As shown, the main steps include:

[0210] Step 1: Once the charging gun is successfully connected to the vehicle, the vehicle enters DC charging mode.

[0211] Step 2: The BMS uses the battery temperature and SOC of the power battery to look up a table to determine the charging current capability of the power battery, and then determines the battery charging zone in which the charging current capability of the power battery is located.

[0212] Step 3: The BMS dynamically adjusts the DC charging request control strategy of the power battery based on the battery charging zone it is in. First, the BMS can determine whether the power battery is in the "blue zone". If so, proceed to step 4; otherwise, proceed to step 5 and subsequent steps.

[0213] Step 4: If the power battery is in the blue area, that is, the charging current capability of the power battery is less than the second charging current capability, then the charging request current value = the current consumption value of the heating component + the current consumption value of the non-heating component (i.e., the high-voltage load component).

[0214] Step 5: Determine if the power battery is in the "orange zone". If yes, proceed to step 6; otherwise, proceed to step 7 and subsequent steps.

[0215] Step 6: If the power battery is in the orange zone, that is, the second charging current capability ≤ the charging current capability of the power battery < the first charging current capability, then the charging request current value = set multiple * BMS lookup table current value + the current consumption value of non-heating components (i.e., high-voltage load components).

[0216] Step 7: If the power battery is in the green zone, that is, the charging current capability of the power battery is greater than or equal to the first charging current capability, then the charging request current value = BMS lookup table current value + heating component consumption current value + non-heating component (i.e., high voltage load component) consumption current value.

[0217] Step 8: If charging is not finished, the BMS will determine the SOC and battery temperature of the power battery in real time, continuously determine the battery charging area of ​​the power battery, and dynamically adjust the DC charging request control strategy until charging is finished.

[0218] In summary, the solution provided in this disclosure has at least the following advantages: In low-temperature scenarios, during DC charging of the power battery, the BMS adjusts the DC charging request control strategy in stages and dynamically according to the performance boundaries of the power battery, ensuring that the charging current does not exceed the charging safety boundary of the power battery, thereby improving charging safety. Compared to charging strategies that do not superimpose the load power of heating components and high-voltage load components, thus sacrificing the power consumption of heating components, this disclosure can improve charging power and charging speed.

[0219] To implement the above embodiments, this disclosure also proposes a charging device.

[0220] Figure 10 This is a schematic diagram of the structure of a charging device provided for an exemplary embodiment of the present disclosure.

[0221] like Figure 10 As shown, the charging device 1000 may include a determining module 1010 and a charging module 1020.

[0222] The determining module 1010 is used to determine the target battery charging area where the power battery is located from multiple preset battery charging areas based on the current state parameters of the power battery in the vehicle; wherein different battery charging areas are associated with different charging strategies.

[0223] The charging module 1020 is used to determine the charging request current value based on a target charging strategy associated with the target battery charging area and to charge the vehicle.

[0224] In one implementation of this disclosure, the determining module 1010 is configured to: determine the charging current capability of the power battery based on the battery temperature and state of charge (SOC) in the current state parameters; wherein the charging current capability is used to indicate the charging current that the power battery is allowed to withstand; and determine the target battery charging area where the power battery is located from a plurality of preset battery charging areas based on the charging current capability.

[0225] In one implementation of this disclosure, multiple preset battery charging regions are predetermined by the following module: a division module, used to divide the allowable charging current capability range of the power battery according to multiple set charging current capabilities, so as to obtain multiple battery charging regions; wherein the charging current capability of the power battery is within the target battery charging region.

[0226] In one implementation of this disclosure, multiple preset charging current capabilities include a preset first charging current capability and a preset second charging current capability, wherein the first charging current capability is greater than the second charging current capability. Multiple preset battery charging regions include: a first battery charging region, wherein the lower limit of the first battery charging region is the first charging current capability; a second battery charging region, wherein the upper limit of the second battery charging region is the first charging current capability and the lower limit of the second charging current capability; and a third battery charging region, wherein the upper limit of the third battery charging region is the second charging current capability.

[0227] In one implementation of this disclosure, the target battery charging area includes a first battery charging area and a charging module 1020, which is used to: determine the required charging current value of the power battery based on the charging current capability of the power battery; and determine the charging request current value based on the sum of the required charging current value, the first current consumption value of the high-voltage load component in the vehicle, and the second current consumption value of the heating component in the vehicle; wherein the heating component is used to heat the power battery.

[0228] In one implementation of this disclosure, the target battery charging area includes a second battery charging area, and a charging module 1020 is used to: adjust the required charging current value of the power battery according to a set multiple to obtain an adjusted current value; wherein the required charging current value is determined based on the charging current capability of the power battery; the set multiple is used to indicate the maximum multiple of the actual allowable transient overshoot of the charging current of the power battery; and determine the charging request current value based on the sum of the adjusted current value and the first current consumption value of the high-voltage load components in the vehicle.

[0229] In one implementation of this disclosure, the target battery charging area includes a third battery charging area, and the charging module 1020 is used to: determine a charging request current value based on the sum of a first current consumption value of a high-voltage load component in the vehicle and a second current consumption value of a heating component.

[0230] In one implementation of this disclosure, the target battery charging area includes a second battery charging area or a third battery charging area. The charging module 1020 is used to: adjust the required charging current value of the power battery according to a set multiple to obtain an adjusted current value; wherein the required charging current value is determined based on the charging current capability of the power battery; the set multiple is used to indicate the maximum multiple of the actual allowable transient overshoot of the charging current of the power battery; and determine the charging request current value based on the adjusted current value, the first current consumption value of the high-voltage load component in the vehicle, and the second current consumption value of the heating component; wherein the heating component is used to heat the power battery.

[0231] In one implementation of this disclosure, the charging module 1020 is configured to: determine the heating power of the heating element based on the second current consumption value of the heating element and the heating resistance; determine a first requested current value based on the sum of the adjustment current value and the first current consumption value, and determine a second requested current value based on the sum of the second current consumption value and the first current consumption value; and determine a charging requested current value based on the first requested current value, the second requested current value, and the heating power.

[0232] In one implementation of this disclosure, the charging module 1020 is configured to: determine a charging request current value based on the maximum value of a first request current value and a second request current value in response to the heating power being greater than or equal to a set power.

[0233] In one implementation of this disclosure, the charging module 1020 is configured to: in response to the heating power being less than a set power, determine a third requested current value based on the sum of the required charging current value, the second consumed current value, and the first consumed current value; and determine a charging request current value based on the minimum value among the first requested current value, the second requested current value, and the third requested current value.

[0234] It should be noted that the aforementioned... Figures 1 to 6 The explanations and descriptions of any of the charging method embodiments also apply to the charging device of that embodiment, and will not be repeated here.

[0235] In the charging device of this embodiment, the target battery charging area where the power battery is currently located is dynamically determined according to the current state parameters of the power battery, and the charging request current value is determined based on the charging strategy associated with the target battery charging area. This achieves regionalized and refined control of the charging process, effectively avoiding charging over-limit problems caused by blindly using high current charging under special working conditions such as low temperature, and significantly reducing safety risks such as overvoltage, overheating and thermal runaway. At the same time, the charging rhythm is optimized under the premise of ensuring charging safety, improving charging efficiency and battery life, and enhancing the adaptability and intelligent control capability of the charging system to complex environments.

[0236] To implement the above embodiments, this disclosure also proposes a charging device.

[0237] Figure 11 This is a schematic diagram of the structure of a charging device provided for an exemplary embodiment of the present disclosure.

[0238] like Figure 11 As shown, the charging device 1100 may include a receiving module 1110 and a charging module 1120.

[0239] The receiving module 1110 is used to receive a target charging request sent by the vehicle. The target charging request carries a charging request current value, which is determined from multiple preset battery charging areas based on the current state parameters of the power battery in the vehicle, and based on the target charging strategy associated with the target battery charging area. Different battery charging areas are associated with different charging strategies.

[0240] The charging module 1120 is used to charge the vehicle based on the charging request current value.

[0241] It should be noted that the aforementioned... Figure 7 The explanation of the charging method embodiment also applies to the charging device of this embodiment, and will not be repeated here.

[0242] In the charging device of this embodiment, the target battery charging area where the power battery is currently located is dynamically determined according to the current state parameters of the power battery, and the charging request current value is determined based on the charging strategy associated with the target battery charging area. This achieves regionalized and refined control of the charging process, effectively avoiding charging over-limit problems caused by blindly using high current charging under special working conditions such as low temperature, and significantly reducing safety risks such as overvoltage, overheating and thermal runaway. At the same time, the charging rhythm is optimized under the premise of ensuring charging safety, improving charging efficiency and battery life, and enhancing the adaptability and intelligent control capability of the charging system to complex environments.

[0243] To implement the above embodiments, this disclosure also proposes a vehicle, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the aforementioned... Figures 1 to 6 The charging method proposed in any of the embodiments.

[0244] To achieve the above embodiments, this disclosure also proposes a charging pile, including: a charging gun and a power supply control device, wherein the charging gun is connected to the power supply control device; the power supply control device is used to perform the aforementioned actions when it is determined that the charging gun is successfully connected to the vehicle. Figure 7 The charging method proposed in the embodiments.

[0245] Figure 12 This is a block diagram illustrating a vehicle 1200 according to an exemplary embodiment. For example, vehicle 1200 may be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, a fuel cell vehicle, or other types of vehicle. Vehicle 1200 may be an intelligent driving vehicle, a semi-intelligent driving vehicle, or a non-intelligent driving vehicle.

[0246] Reference Figure 12 The vehicle 1200 may include various subsystems, such as an infotainment system 1210, a perception system 1220, a decision control system 1230, a drive system 1240, and a computing platform 1250. The vehicle 1200 may also include more or fewer subsystems, and each subsystem may include multiple components. Furthermore, each subsystem and component of the vehicle 1200 can be interconnected via wired or wireless means.

[0247] In some embodiments, the infotainment system 1210 may include a communication system, an entertainment system, and a navigation system, etc.

[0248] The perception system 1220 may include several types of sensors for sensing information about the environment surrounding the vehicle 1200. For example, the perception system 1220 may include a global positioning system (which may be a GPS system, a BeiDou system, or another positioning system), an inertial measurement unit (IMU), a lidar, a millimeter-wave radar, an ultrasonic radar, and a camera device.

[0249] The decision control system 1230 may include a computing system, a vehicle controller, a steering system, a throttle, and a braking system.

[0250] The drive system 1240 may include components that provide powered motion to the vehicle 1200. In one embodiment, the drive system 1240 may include an engine, an energy source, a transmission system, and wheels. The engine may be one or a combination of internal combustion engines, electric motors, and compressed air engines. The engine is capable of converting energy provided by the energy source into mechanical energy.

[0251] Some or all of the functions of the vehicle 1200 are controlled by a computing platform 1250. The computing platform 1250 may include at least one processor 1251 and a memory 1252, the processor 1251 being able to execute instructions 1253 stored in the memory 1252.

[0252] Processor 1251 can be any conventional processor, such as a commercially available CPU. Processors may also include graphics processing units (GPUs), field-programmable gate arrays (FPGAs), system-on-a-chip (SoCs), application-specific integrated circuits (ASICs), or combinations thereof.

[0253] The memory 1252 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0254] In addition to instruction 1253, memory 1252 can also store data, such as road maps, route information, vehicle position, direction, speed, and other data. The data stored in memory 1252 can be used by computing platform 1250.

[0255] In this embodiment of the disclosure, processor 1251 can execute instruction 1253 to perform the above-described task. Figures 1 to 6 All or part of the steps in any of the method embodiments.

[0256] To implement the above embodiments, this disclosure also proposes a chip, wherein the chip includes an interface circuit and a processing circuit coupled to each other. The interface circuit is used to input or output signals, and the processing circuit is configured to perform the charging method provided in any of the foregoing embodiments.

[0257] Figure 13 This is a schematic diagram of the structure of a chip according to an exemplary embodiment of this disclosure. See also... Figure 13 The diagram shown is a schematic representation of the structure of chip 1300, but it is not limited to this.

[0258] Chip 1300 includes processing circuit 1301, which is configured to perform any of the above charging methods.

[0259] In some embodiments, chip 1300 further includes one or more interface circuits 1302. Optionally, interface circuit 1302 is connected to memory 1303, and interface circuit 1302 can be used to receive signals from memory 1303 or other devices, and interface circuit 1302 can be used to send signals to memory 1303 or other devices. For example, interface circuit 1302 can read instructions stored in memory 1303 and send the instructions to processing circuit 1301.

[0260] In some embodiments, the interface circuit 1302 performs at least one of the communication steps such as sending and / or receiving in the above method, while the processing circuit 1301 performs other steps.

[0261] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0262] In some embodiments, chip 1300 further includes one or more memories 1303 for storing instructions. Optionally, all or part of the memories 1303 may be located outside of chip 1300.

[0263] To implement the above embodiments, this disclosure also proposes a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the charging method as described in any of the foregoing method embodiments.

[0264] To implement the above embodiments, this disclosure also proposes a computer program product having a computer program stored thereon, which, when executed by a processor, implements the charging method as described in any of the foregoing method embodiments.

[0265] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0266] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0267] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0268] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-including system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples of computer-readable media (a non-exhaustive list) include: electrical connections (electronic devices) having one or more wires, portable computer disk drives (magnetic devices), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and compact disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0269] It should be understood that various parts of this disclosure can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0270] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

[0271] Furthermore, the functional units in the various embodiments of this disclosure can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0272] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A charging method, characterized in that, include: Based on the current state parameters of the power battery in the vehicle, the target battery charging area where the power battery is located is determined from multiple preset battery charging areas; wherein, different battery charging areas are associated with different charging strategies. Based on the target charging strategy associated with the target battery charging area, a charging request current value is determined, and the vehicle is charged.

2. The method according to claim 1, characterized in that, The step of determining the target battery charging area where the power battery is located from multiple preset battery charging areas based on the current state parameters of the power battery in the vehicle includes: Based on the battery temperature and state of charge (SOC) in the current state parameters, the charging current capability of the power battery is determined; wherein, the charging current capability is used to indicate the charging current that the power battery is allowed to withstand. Based on the charging current capability, the target battery charging region where the power battery is located is determined from the plurality of preset battery charging regions.

3. The method according to claim 2, characterized in that, The plurality of preset battery charging areas are determined in advance using the following steps: Based on multiple set charging current capabilities, the range of charging current capabilities that the power battery can withstand is divided to obtain multiple battery charging regions. The charging current capability of the power battery is within the charging range of the target battery.

4. The method according to claim 3, characterized in that, The plurality of preset charging current capabilities include a preset first charging current capability and a preset second charging current capability, wherein the first charging current capability is greater than the second charging current capability, and the plurality of preset battery charging regions include: A first battery charging region; wherein, the lower limit of the first battery charging region is the first charging current capability; The second battery charging region; wherein, the upper limit of the second battery charging region is the first charging current capability, and the lower limit is the second charging current capability; The third battery charging region; wherein, the upper limit of the third battery charging region is the second charging current capability.

5. The method according to claim 4, characterized in that, The target battery charging region includes a first battery charging region, and determining the charging request current value based on the target charging strategy associated with the target battery charging region includes: Based on the charging current capability of the power battery, determine the required charging current value of the power battery; The charging request current value is determined based on the sum of the required charging current value, the first current consumption value of the high-voltage load component in the vehicle, and the second current consumption value of the heating component in the vehicle; wherein the heating component is used to heat the power battery.

6. The method according to claim 4, characterized in that, The target battery charging region includes a second battery charging region, and determining the charging request current value based on the target charging strategy associated with the target battery charging region includes: The required charging current value of the power battery is adjusted according to a set multiplier to obtain an adjusted current value; wherein, the required charging current value is determined based on the charging current capability of the power battery; the set multiplier is used to indicate the maximum allowable transient overshoot of the charging current of the power battery. The charging request current value is determined based on the sum of the adjusted current value and the first current consumption value of the high-voltage load component in the vehicle.

7. The method according to claim 4, characterized in that, The target battery charging region includes a third battery charging region, and determining the charging request current value based on the target charging strategy associated with the target battery charging region includes: The charging request current value is determined based on the sum of the first current consumption value of the high-voltage load component and the second current consumption value of the heating component in the vehicle.

8. The method according to claim 4, characterized in that, The target battery charging area includes a second battery charging area or a third battery charging area. The determination of the charging request current value based on the target charging strategy associated with the target battery charging region includes: The required charging current value of the power battery is adjusted according to a set multiplier to obtain an adjusted current value; wherein, the required charging current value is determined based on the charging current capability of the power battery; the set multiplier is used to indicate the maximum allowable transient overshoot of the charging current of the power battery. The charging request current value is determined based on the adjusted current value, the first current consumption value of the high-voltage load component in the vehicle, and the second current consumption value of the heating component; wherein the heating component is used to heat the power battery.

9. The method according to claim 8, characterized in that, Determining the charging request current value based on the adjusted current value, the first current consumption value of the high-voltage load component in the vehicle, and the second current consumption value of the heating component includes: The heating power of the heating element is determined based on the second current consumption value and the heating resistance of the heating element. The first requested current value is determined based on the sum of the adjusted current value and the first consumed current value, and the second requested current value is determined based on the sum of the second consumed current value and the first consumed current value. The charging request current value is determined based on the first requested current value, the second requested current value, and the heating power.

10. The method according to claim 9, characterized in that, Determining the charging request current value based on the first requested current value, the second requested current value, and the heating power includes: In response to the heating power being greater than or equal to a set power, the charging request current value is determined based on the maximum value between the first requested current value and the second requested current value; or, In response to the heating power being less than the set power, a third requested current value is determined based on the sum of the required charging current value, the second consumed current value, and the first consumed current value, and the charging requested current value is determined based on the minimum value among the first requested current value, the second requested current value, and the third requested current value.

11. A charging method, characterized in that, include: Receive a target charging request sent by a vehicle; wherein the target charging request carries a charging request current value, which is determined from multiple preset battery charging areas based on the current state parameters of the power battery in the vehicle, and based on a target charging strategy associated with the target battery charging area; wherein different battery charging areas are associated with different charging strategies. The vehicle is charged based on the requested charging current value.

12. A charging device, characterized in that, include: The determination module is used to determine the target battery charging area where the power battery is located from multiple preset battery charging areas based on the current state parameters of the power battery in the vehicle; wherein different battery charging areas are associated with different charging strategies. Based on the target charging strategy associated with the target battery charging area, a charging request current value is determined, and the vehicle is charged.

13. The apparatus according to claim 12, characterized in that, The determining module is used for: Based on the battery temperature and state of charge (SOC) in the current state parameters, the charging current capability of the power battery is determined; wherein, the charging current capability is used to indicate the charging current that the power battery is allowed to withstand. Based on the charging current capability, the target battery charging region where the power battery is located is determined from the plurality of preset battery charging regions.

14. The apparatus according to claim 13, characterized in that, The multiple preset battery charging areas are predetermined using the following modules: The division module is used to divide the allowable charging current capability range of the power battery according to multiple set charging current capabilities, so as to obtain multiple battery charging regions. The charging current capability of the power battery is within the charging range of the target battery.

15. A charging device, characterized in that, include: A receiving module is used to receive a target charging request sent by a vehicle; wherein the target charging request carries a charging request current value, which is determined from multiple preset battery charging areas based on the current state parameters of the power battery in the vehicle, and based on a target charging strategy associated with the target battery charging area; wherein different battery charging areas are associated with different charging strategies. A charging module is used to charge the vehicle based on the charging request current value.

16. A vehicle, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured as follows: The steps of implementing the method as described in any one of claims 1 to 10.

17. A charging pile, characterized in that, include: A charging gun and a power supply control device, wherein the charging gun is connected to the power supply control device; The power supply control device is used to perform the steps of the method as described in claim 11 when it is determined that the charging gun is successfully connected to the vehicle.

18. A non-transitory computer-readable storage medium having computer program instructions stored thereon, characterized in that, When executed by a processor, the program instructions implement the steps of the method according to any one of claims 1 to 10, or implement the steps of the method according to claim 11.

19. A chip, characterized in that, The chip includes an interface circuit and a processing circuit coupled to each other. The interface circuit is used to input or output signals, and the processing circuit is used to implement the method of any one of claims 1 to 10, or to implement the method of claim 11.

20. A computer program product, characterized in that, It includes a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1 to 10, or implements the steps of the method according to claim 11.

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