Method for determining residual electric quantity of power battery and electronic equipment

Abstract

The embodiment of the invention provides a method for determining the remaining capacity of a power battery and electronic equipment. In the technical scheme provided by the embodiment of the invention, the method comprises the steps that state information of a vehicle is obtained, the state information comprises the remaining capacity of a power battery sent by a battery management system and a first signal, and the first signal is used for indicating whether the remaining capacity of the power battery is effective or not; and determining the remaining capacity of the power battery according to the remaining capacity of the power battery and the first signal. The accuracy of determining the residual electric quantity of the power battery by the VCU can be improved, and the phenomenon of repeated entering and exiting of electricity supplementing is reduced.

Description

Technical Field

[0001] The present invention relates to the field of new energy vehicles, and in particular to a method for determining the remaining power of a power battery and an electronic device. Background Art

[0002] When the whole vehicle is in sleep mode, the battery management system (BMS) takes precedence over the vehicle control unit (VCU) in sleep mode. When the BMS is in sleep mode, the VCU cannot read the remaining power of the power battery sent by the BMS, and the VCU uses the default value (such as 50% of the total power of the power battery) for processing. When the remaining power of the power battery is lower than the charging threshold, the VCU does not enter the charging process but enters the sleep process; when the BMS is in sleep mode, the VCU uses the default value as the remaining power of the power battery, and the default value is usually greater than the charging threshold, which will trigger the charging process and wake up the network; after waking up the network, the VCU detects that the remaining power of the power battery is lower than the charging threshold, and enters the vehicle sleep process again, resulting in repeated entry and exit of the charging process. The vehicle cannot be in sleep mode and the battery power will be consumed.

[0003] Therefore, when the vehicle is in sleep mode, the remaining power of the power battery determined by the VCU is inaccurate, resulting in repeated entry and exit of the power replenishment process. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a method for determining the remaining power of a power battery and an electronic device, which can improve the accuracy of the VCU in determining the remaining power of the power battery and reduce the phenomenon of repeatedly entering and exiting the power replenishment.

[0005] In a first aspect, an embodiment of the present invention provides a method for determining the remaining power of a power battery, the method comprising: Acquiring status information of the vehicle, the status information including the remaining power of the power battery and a first signal sent by the battery management system, the first signal being used to indicate whether the remaining power of the power battery is valid; The remaining power of the power battery is determined according to the remaining power of the power battery and the first signal.

[0006] Optionally, determining the remaining power of the power battery according to the remaining power of the power battery and the first signal includes: When the first signal is valid, determining that the remaining power of the power battery is the remaining power of the power battery sent by the battery management system; or When the first signal changes from valid to invalid, it is determined that the remaining power of the power battery is the remaining power of the power battery sent by the battery management system at the last moment.

[0007] Optionally, after obtaining the vehicle status information, the method further includes: Determine whether a repeated power-on flag is set according to the status information; Determine whether a prohibition power supplement flag is set according to the state information and / or the repeated power supplement flag.

[0008] Optionally, determining whether a repeated power-on flag is set according to the status information includes: When it is determined according to the status information that the vehicle status of the vehicle satisfies a first condition, setting a repeated power replenishment flag; or When it is determined according to the status information that the vehicle status of the vehicle satisfies a second condition, the repeated power replenishment flag is reset.

[0009] Optionally, the determining whether a prohibition power supplement flag is set according to the state information and / or the repeated power supplement flag includes: In a key cycle, judging whether the vehicle state of the vehicle satisfies a third condition according to the state information and / or the repeated power replenishment flag; If yes, set the prohibition power supplement flag to a bit; If not, the power replenishment prohibition flag is reset.

[0010] Optionally, after determining whether a prohibition power supplement flag is set according to the state information and the repeated power supplement flag, the method further includes: It is determined that the vehicle state of the vehicle satisfies a fourth condition according to the state information and the power replenishment prohibition flag, and the battery is recharged.

[0011] Optionally, after the battery is charged, the method further comprises: It is determined according to the state information and / or the power replenishment prohibition flag that the vehicle state satisfies a fifth condition, and the battery is not replenished.

[0012] On the other hand, an embodiment of the present invention provides an electronic device, including a memory and a processor, wherein the memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions, and is characterized in that the program instructions implement the steps of the above-mentioned method when loaded and executed by the processor.

[0013] On the other hand, an embodiment of the present invention provides a computer storage medium, wherein the computer storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer storage medium is located is controlled to execute the above-mentioned method.

[0014] On the other hand, an embodiment of the present invention provides a computer program product, which includes a stored computer program, wherein when the computer program is running, the device where the computer program product is located is controlled to execute the above-mentioned method.

[0015] In the technical solution of the power battery remaining power determination method and electronic device provided by the embodiment of the present invention, the method comprises: obtaining the vehicle status information, the status information includes the power battery remaining power and the first signal sent by the battery management system, the first signal is used to indicate whether the power battery remaining power is valid; according to the power battery remaining power and the first signal, determining the power battery remaining power. It can improve the accuracy of the VCU determining the power battery remaining power and reduce the phenomenon of repeatedly entering and exiting the power replenishment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a local charging solution for a vehicle battery; Figure 2 A flowchart of a method for determining the remaining power of a power battery provided by an embodiment of the present invention; Figure 3 A flowchart of another method for determining the remaining power of a power battery provided by an embodiment of the present invention; Figure 4 A schematic diagram of a VCU acquiring vehicle status information in an embodiment of the present invention; Figure 5 for Figure 3 A flowchart for determining whether a power replenishment prohibition flag is set according to status information and / or a repeated power replenishment flag; Figure 6 for Figure 3 Flow chart of battery charging in the figure; Figure 7 Schematic diagram of a vehicle charging process in an embodiment of the present invention; Figure 8 A schematic diagram of a vehicle exiting a charging process in an embodiment of the present invention; Fig. 9 A schematic diagram of a vehicle power replenishment solution in an embodiment of the present invention; Fig.10 A schematic diagram of the structure of a device for determining the remaining power of a power battery provided by an embodiment of the present invention; Fig.11 A schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0018] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0020] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0021] With the continuous and rapid development of new energy technologies in automobiles, users have higher and higher demands for automobile use. Batteries are an important component of new energy vehicles. When the vehicle is not in use, there will be static current or a module will abnormally wake up the network and generate large energy consumption, causing battery power feeding. Battery detection and management can improve user satisfaction.

[0022] Many new energy vehicles are equipped with battery charging function. Figure 1 Schematic diagram of a local charging solution for vehicle batteries, such as Figure 1 As shown, the basic logic of battery charging is as follows: After the vehicle network is awakened, the vehicle control unit (VCU) monitors the vehicle status. When the battery voltage is low and the vehicle status meets the charging conditions, the VCU issues a command to close the high-voltage switch, controlling the DC-DC converter (DCDC) to output a fixed voltage to charge the battery, and automatically exits the charging when the fixed charging time is reached. Although automatic entry and exit of charging are achieved, there are the following four disadvantages: 1. Using a fixed charging voltage and a fixed charging time to charge the battery is not flexible enough and may result in overcharging or undercharging.

[0023] 2. VCU can only collect battery voltage signals and cannot determine whether the battery is faulty. When the battery is faulty and cannot store energy, it still provides power. This ineffective power replenishment poses a safety hazard.

[0024] 3. When the DCDC fails and the output voltage is low, if power is still supplied, this ineffective power supply will increase the consumption of the battery and eventually lead to battery depletion.

[0025] 4. When the whole vehicle is in sleep mode, the Battery Management System (BMS) takes precedence over the VCU in sleep mode. When the BMS is in sleep mode, the VCU cannot read the remaining power of the power battery sent by the BMS, and the VCU uses the default value (such as 50% of the total power of the power battery, which is greater than the replenishment threshold) for processing. When the remaining power of the power battery is lower than the replenishment threshold, the VCU will not enter the replenishment process, and the whole vehicle will enter the sleep process. When the BMS is in sleep mode, the VCU uses the default value as the remaining power of the power battery, and the default value is greater than the replenishment threshold, which will trigger the replenishment process and wake up the network. After waking up the network, the VCU detects that the remaining power of the power battery is lower than the replenishment threshold, and will enter the sleep process of the whole vehicle again, resulting in repeated entry and exit of the replenishment process. The vehicle cannot go into sleep mode and the battery power will be consumed.

[0026] In view of the above technical problems, an embodiment of the present invention provides a method for determining the remaining power of a power battery, which can improve the accuracy of the VCU in determining the remaining power of the power battery and reduce the phenomenon of repeatedly entering and exiting the power replenishment.

[0027] Figure 2 A flowchart of a method for determining the remaining power of a power battery provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the method includes: step 101-step 102.

[0028] Step 101: Acquire vehicle status information, where the status information includes the remaining power of the power battery and a first signal sent by a battery management system, where the first signal is used to indicate whether the remaining power of the power battery is valid.

[0029] Step 102: Determine the remaining power of the power battery according to the remaining power of the power battery and the first signal.

[0030] In a technical solution of a method for determining the remaining power of a power battery provided in an embodiment of the present invention, the method comprises: obtaining vehicle status information, the status information including the remaining power of the power battery and a first signal sent by a battery management system, the first signal being used to indicate whether the remaining power of the power battery is valid; and determining the remaining power of the power battery according to the remaining power of the power battery and the first signal. This can improve the accuracy of the VCU in determining the remaining power of the power battery and reduce the phenomenon of repeatedly entering and exiting the charging process.

[0031] Figure 3 A flowchart of another method for determining the remaining power of a power battery provided by an embodiment of the present invention is shown in FIG. Figure 3As shown, the method includes: steps 201 to 206.

[0032] Step 201: Acquire vehicle status information, where the status information includes the remaining power of the power battery and a first signal sent by a battery management system, where the first signal is used to indicate whether the remaining power of the power battery is valid.

[0033] In the embodiment of the present invention, each step is executed by the VCU of the vehicle.

[0034] In the embodiment of the present invention, when the vehicle is in a network awakening state, the state information of the vehicle is obtained.

[0035] Exemplarily, the first signal is a power battery remaining power validity signal.

[0036] For example, Figure 4 FIG. 1 is a schematic diagram of a VCU acquiring vehicle status information in an embodiment of the present invention. Figure 4 As shown, the battery management system monitors the remaining power (SOC) of the power battery and the first signal, and the VCU reads the remaining power of the power battery and the first signal through CAN bus communication.

[0037] Step 202: Determine the remaining power of the power battery according to the remaining power of the power battery and the first signal.

[0038] In some possible embodiments, step 202 specifically includes: when the first signal is valid, determining that the remaining power of the power battery is the remaining power of the power battery sent by the battery management system; or When the first signal changes from valid to invalid, it is determined that the remaining power of the power battery is the remaining power of the power battery sent by the battery management system at the last moment.

[0039] In the embodiment of the present invention, the VCU processes the remaining power of the power battery according to different situations: when the VCU receives a power battery remaining power validity signal that changes from valid to invalid, the VCU determines that the remaining power of the power battery is the remaining power of the power battery sent by the BMS at the previous moment; when the VCU receives a power battery remaining power validity signal that is always valid, the VCU determines that the remaining power of the power battery is the remaining power of the power battery sent by the BMS.

[0040] Therefore, the embodiments of the present invention improve the accuracy of the VCU in determining the remaining power of the power battery, reduce the phenomenon of the vehicle being unable to sleep and consuming a large amount of battery power due to repeated entering and exiting charging, extend the life of the battery, and improve user satisfaction.

[0041] Step 203: Determine whether the repeated power replenishment flag is set according to the status information.

[0042] In some possible embodiments, step 203 specifically includes: when it is determined according to the state information that the vehicle state satisfies the first condition, setting a repeated power replenishment flag; or When it is determined according to the status information that the vehicle status satisfies the second condition, the repeated power replenishment flag is reset.

[0043] Exemplarily, the status information further includes: key status.

[0044] Exemplarily, the key state is OFF or ON. When the vehicle is started, the key state is ON; when the vehicle is turned off, the key state is OFF.

[0045] For example, Figure 4 As shown, the Intelligent Body Controller (IBC) monitors the key status, and the VCU reads the key status through CAN bus communication.

[0046] Exemplarily, the first condition is: after the battery is recharged within a first time range, the battery is recharged again, or the number of times the battery is recharged within a second time range in a key cycle is greater than a first threshold.

[0047] For example, the first condition is: the battery recharge is restarted within 20 seconds after the battery recharge is completed, or the number of recharges within 24 hours in a key cycle is greater than 5 times.

[0048] For example, a key cycle refers to a process from vehicle ignition off to vehicle starting, during which the key state is OFF.

[0049] The embodiment of the present invention sets a repeated charging flag, which is set when the vehicle status meets the first condition, to prevent invalid charging due to battery failure or abnormal large power consumption at a certain node.

[0050] Exemplarily, the second condition is: the key state is ON.

[0051] When the VCU detects that the key status is ON, the repeated power-on flag is reset.

[0052] Step 204: Determine whether the power replenishment prohibition flag is set according to the state information and / or the repeated power replenishment flag.

[0053] In some possible embodiments, Figure 5 As shown, step 204 specifically includes: step 2041-step 2043.

[0054] Step 2041: within a key cycle, determine whether the vehicle state meets the third condition based on the state information and / or the repeated power replenishment flag. If so, execute step 2042; if not, execute step 2043.

[0055] Exemplarily, the status information further includes: an output voltage of the DC converter.

[0056] For example, Figure 4 As shown, the DCDC module monitors the output voltage of the DCDC, and the VCU reads the output voltage of the DCDC through CAN bus communication to ensure that the battery is effectively replenished.

[0057] Exemplarily, the third condition is: when the battery is recharged for a time greater than a second threshold, the output voltage of the DC converter is less than the first voltage, and the remaining power of the power battery is less than one or any combination of the third threshold and the repeated recharge flag position.

[0058] For example, the third condition is: when the battery recharge time is greater than 10 seconds, the output voltage of the DC converter read by the VCU is less than 12V, the remaining power of the power battery determined by the VCU is less than 10%, and one or any combination of items in the recharge flag position is repeated.

[0059] Step 2042: Set the power supplement prohibition flag to a bit. Continue to step 205.

[0060] Step 2043: reset the power replenishment prohibition flag. Continue to step 205.

[0061] The embodiment of the present invention sets a flag for prohibiting power replenishment, which is set when the vehicle state meets the third condition. When the DCDC fails, invalid power replenishment is no longer performed, thereby preventing the battery from being depleted due to invalid power replenishment.

[0062] Step 205: Determine that the vehicle state meets the fourth condition based on the state information and the power replenishment prohibition flag, and replenish the battery.

[0063] Exemplarily, the status information further includes: battery voltage, front compartment cover status, DC converter status, main positive relay status, and main and auxiliary relay status.

[0064] For example, Figure 4As shown, the VCU reads the battery voltage through its own PIN pin. The Body Control Module (BCM) monitors the front cover status, and the VCU reads the front cover status through CAN bus communication. The DCDC module monitors the DCDC status, and the VCU reads the DCDC status through CAN bus communication. The BMS monitors the main positive relay status and the main and auxiliary relay status, and the VCU reads the main positive relay status and the main and auxiliary relay status through CAN bus communication.

[0065] Exemplarily, the fourth condition is: the key state is OFF, the battery voltage is less than the fourth threshold, the remaining power of the power battery is greater than or equal to the third threshold, the front compartment cover state is closed, the DC converter state is fault-free, the main positive relay state and the main auxiliary relay state are disconnected, the vehicle has no power-off fault and the power replenishment flag is prohibited from being reset.

[0066] Among them, VCU determines whether the vehicle has a power-off failure by monitoring the status of each module.

[0067] For example, the fourth condition is: the key status sent by IBC is OFF, and the battery voltage monitored by VCU is less than 12V, and the remaining power of the power battery determined by VCU is greater than or equal to 10%, and the front compartment cover status sent by BCM is closed, and the DC converter status sent by DCDC is fault-free, and the main positive relay status and the main auxiliary relay status sent by BMS are disconnected, and VCU determines that there is no power-off fault in the whole vehicle, and the recharging flag is prohibited from being reset.

[0068] Exemplarily, the status information further includes: ambient temperature.

[0069] For example, Figure 4 As shown, the VCU obtains the ambient temperature monitored by the ambient temperature sensor.

[0070] In some possible embodiments, Figure 6 As shown, the process of recharging the battery includes steps 2051 to 2053.

[0071] Step 2051: Determine the charging voltage and charging duration according to the battery voltage and the ambient temperature.

[0072] Due to the characteristics of ordinary batteries, the VCU cannot read the battery power. In the embodiment of the present invention, the VCU reads the battery voltage and ambient temperature before recharging, confirms the recharging voltage and recharging time, and performs flexible recharging on the battery.

[0073] For example, the smaller the battery voltage is and the lower the ambient temperature is, the greater the charging voltage output by the VCU to control the DCDC is and the longer the charging time is.

[0074] Exemplarily, the charging voltage and charging time corresponding to the battery voltage and ambient temperature may be determined by looking up a table.

[0075] For example, as shown in Table 1, the charging time (min) corresponding to the battery voltage and the ambient temperature can be determined by querying Table 1.

[0076] Table 1 Correspondence between battery voltage, ambient temperature and charging time Step 2052: Send a high-voltage switch closing instruction to the battery management system.

[0077] The battery management system closes the high-voltage switch according to the high-voltage switch closing instruction to supply power to the DCDC.

[0078] Step 2053: Send an enable signal and a voltage signal to the DC converter and start timing according to the power replenishment duration, wherein the voltage signal includes the power replenishment voltage.

[0079] In this step, the VCU first sends an enable signal to the DC converter to start working; then the VCU sends a voltage signal to the DC converter to make the DC converter output a charging voltage to charge the battery; at the same time, the VCU starts timing according to the charging duration to count the duration of this charging. When the duration of this charging reaches the charging duration, the DC converter stops charging.

[0080] For example, Figure 7 FIG. 1 is a schematic diagram of a vehicle charging process in an embodiment of the present invention. Figure 7 As shown, after the vehicle network is awakened, the VCU monitors the vehicle status and determines whether the vehicle status meets the charging conditions. If not, the vehicle status continues to be monitored. If the charging conditions are met, the VCU requests the BMS to turn off the high-voltage switch, and then controls the DCDC to charge the battery.

[0081] Step 206: Determine, based on the status information and / or the power replenishment prohibition flag, that the vehicle status satisfies the fifth condition, and do not replenish the battery.

[0082] Exemplarily, the fifth condition includes: the key state is ON, the remaining power of the power battery is less than the fifth threshold, the front compartment cover state is open, it is determined that the DC converter state is faulty, the power replenishment prohibition flag is in position, and the current power replenishment time is greater than the power replenishment time, or any combination of the following.

[0083] For example, the fifth condition includes: the key status sent by IBC is ON, the remaining power of the power battery determined by VCU is less than 8%, the front compartment cover status sent by BCM is open, VCU determines that the DCDC status is faulty, the power replenishment prohibition flag is in position and the current power replenishment time is greater than the power replenishment time, or any combination of the following.

[0084] In an embodiment of the present invention, when the vehicle is in a charging state and the vehicle state meets the fifth condition, the VCU sends a command to disconnect the high-voltage switch to the battery management system, and the battery management system disconnects the high-voltage switch to stop supplying power to the DCDC, thereby stopping charging the battery.

[0085] For example, Figure 8 FIG. 1 is a schematic diagram of a vehicle exiting a charging process in an embodiment of the present invention. Figure 8 As shown, the vehicle is charging the battery, monitoring the vehicle status and determining whether the vehicle status meets the conditions for exiting charging. If the conditions for exiting charging are not met, the vehicle status continues to be monitored; if the conditions for exiting charging are met, the VCU requests the BMS to disconnect the high-voltage switch, so that the DCDC stops charging the battery.

[0086] For example, Fig. 9 FIG. 1 is a schematic diagram of a vehicle power replenishment solution in an embodiment of the present invention. Fig. 9 As shown, first the T-BOX wakes up the vehicle, then the VCU monitors the vehicle status and controls the BMS and DCDC to intelligently charge the battery or exit intelligent charging according to the vehicle status.

[0087] In summary, the method for determining the remaining power of a power battery provided by the embodiment of the present invention has the following beneficial effects: 1) Flexible battery charging according to battery voltage and ambient temperature can solve the problem of over-charging or under-charging caused by charging with fixed charging voltage and fixed charging time.

[0088] 2) By setting the repeated charging flag, it is set when the vehicle status meets the first condition. This can prevent invalid charging due to battery failure or abnormal large power consumption at a certain node, thereby reducing safety hazards.

[0089] 3) By setting a prohibition power replenishment flag, it is set when the vehicle status meets the third condition. When the DCDC fails, invalid power replenishment will no longer be performed, thus avoiding battery depletion due to invalid power replenishment and extending the battery life.

[0090] 4) The remaining power of the power battery is determined according to the remaining power of the power battery and the remaining power validity signal of the power battery, which improves the accuracy of the VCU in determining the remaining power of the power battery, reduces the phenomenon of the vehicle being unable to sleep and a large amount of battery power consumption caused by repeated entry and exit of charging, solves the problem of repeated charging, extends the life of the battery, and improves user satisfaction.

[0091] Therefore, the method for determining the remaining power of a power battery provided by the embodiment of the present invention can reduce the phenomenon of ineffective power replenishment and repeated power replenishment by optimizing the power replenishment strategy.

[0092] Fig.10 A schematic diagram of a structure of a device for determining the remaining power of a power battery provided by an embodiment of the present invention is shown in FIG. Fig.10 As shown, the device includes: a transceiver module 51 and a processing module 52.

[0093] The transceiver module 51 is used to obtain the status information of the vehicle, wherein the status information includes the remaining power of the power battery and a first signal sent by the battery management system, wherein the first signal is used to indicate whether the remaining power of the power battery is valid.

[0094] The processing module 52 is used to determine the remaining power of the power battery according to the remaining power of the power battery and the first signal.

[0095] Optionally, the processing module 52 is specifically configured to determine, when the first signal is valid, that the remaining power of the power battery is the remaining power of the power battery sent by the battery management system; or When the first signal changes from valid to invalid, it is determined that the remaining power of the power battery is the remaining power of the power battery sent by the battery management system at the last moment.

[0096] Optionally, after the transceiver module 51 obtains the vehicle status information, the processing module 52 is further used to determine whether the repeated power replenishment flag is set according to the status information; and determine whether the prohibited power replenishment flag is set according to the status information and the repeated power replenishment flag.

[0097] Optionally, the processing module 52 is specifically configured to set a repeated power replenishment flag when determining, based on the status information, that the vehicle status of the vehicle satisfies a first condition; or When it is determined according to the status information that the vehicle status of the vehicle satisfies a second condition, the repeated power replenishment flag is reset.

[0098] Optionally, the processing module 52 is specifically configured to determine whether the vehicle state of the vehicle satisfies a third condition according to the state information and / or the repeated power replenishment flag within a key cycle; If yes, set the prohibition power supplement flag to a bit; If not, the power replenishment prohibition flag is reset.

[0099] Optionally, after determining whether the prohibition power replenishment flag is set according to the state information and the repeated power replenishment flag, the processing module 52 is further configured to determine that the vehicle state meets a fourth condition according to the state information and the prohibition power replenishment flag, and replenish power for the battery.

[0100] Optionally, after the processing module 52 recharges the battery, it is further configured to determine, based on the status information and / or the recharge prohibition flag, that the vehicle status of the vehicle satisfies a fifth condition, and not recharge the battery.

[0101] The power battery remaining capacity determination device provided by the embodiment of the present invention can be used to achieve the above Figures 2 to 9 For a detailed description of the method for determining the remaining power of the power battery, please refer to the embodiment of the method for determining the remaining power of the power battery mentioned above, which will not be repeated here.

[0102] In a technical solution of a power battery remaining power determination device provided by an embodiment of the present invention, the vehicle status information is obtained, the status information includes the power battery remaining power and a first signal sent by a battery management system, the first signal is used to indicate whether the power battery remaining power is valid; the power battery remaining power is determined according to the power battery remaining power and the first signal. This can improve the accuracy of the VCU determining the power battery remaining power and reduce the phenomenon of repeatedly entering and exiting the power replenishment.

[0103] Fig.11 This is a schematic diagram of the structure of an embodiment of an electronic device of this specification, such as Fig.11 As shown, the electronic device may include at least one processor; and at least one memory connected to the processor in communication, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the instructions of this specification. Figure 2~Figure 9 The illustrated embodiment provides a method for determining the remaining power of a power battery.

[0104] Fig.11 A block diagram of an exemplary electronic device suitable for implementing the embodiments of the present description is shown. Fig.11 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of this specification.

[0105] like Fig.11 As shown, the electronic device is in the form of a general-purpose computing device. The components of the electronic device may include, but are not limited to: one or more processors 21, a memory 23, and a communication bus 24 connecting different system components (including the memory 23 and the processor 21).

[0106] The communication bus 24 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to Industry Standard Architecture (hereinafter referred to as: ISA) bus, Micro Channel Architecture (hereinafter referred to as: MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (hereinafter referred to as: VESA) local bus and Peripheral Component Interconnection (hereinafter referred to as: PCI) bus.

[0107] Electronic devices typically include a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device, including volatile and non-volatile media, removable and non-removable media.

[0108] The memory 23 may include a computer system readable medium in the form of a volatile memory, such as a random access memory (RAM) and / or a cache memory. The electronic device may further include other removable / non-removable, volatile / non-volatile computer system storage media. The memory 23 may include at least one program product having a set (e.g., at least one) of program modules, which are configured to perform the functions of each embodiment of the present specification.

[0109] A program / utility having a set (at least one) of program modules may be stored in the memory 23, such program modules including - but not limited to - an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include the implementation of a network environment. The program modules generally perform the functions and / or methods of the embodiments described in this specification.

[0110] The processor 21 executes various functional applications and data processing by running the programs stored in the memory 23, such as implementing the Figure 2~Figure 9 The illustrated embodiment provides a method for determining the remaining power of a power battery.

[0111] The embodiment of the present specification provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, wherein the computer instructions enable the computer to execute the present specification. Figure 2~Figure 9 The illustrated embodiment provides a method for determining the remaining power of a power battery.

[0112] The above-mentioned non-transitory computer-readable storage medium may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (Read Only Memory; hereinafter referred to as: ROM), an erasable programmable read-only memory (Erasable Programmable Read Only Memory; hereinafter referred to as: EPROM) or flash memory, optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, device or device.

[0113] Computer-readable signal media may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0114] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0115] Computer program code for performing the operations of this specification may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect through the Internet).

[0116] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0117] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this specification. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0118] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this specification, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0119] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of this specification includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of this specification belong.

[0120] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0121] It should be noted that the terminals involved in the embodiments of this specification may include but are not limited to personal computers (Personal Computer; hereinafter referred to as: PC), personal digital assistants (Personal Digital Assistant; hereinafter referred to as: PDA), wireless handheld devices, tablet computers (Tablet Computer), mobile phones, MP3 players, MP4 players, etc.

[0122] In the several embodiments provided in this specification, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0123] In addition, each functional unit in each embodiment of this specification may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0124] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute some steps of the method described in each embodiment of this specification. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory; hereinafter referred to as: ROM), random access memory (Random Access Memory; hereinafter referred to as: RAM), disk or optical disk and other media that can store program codes.

[0125] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this specification should be included in the scope of protection of this specification.

Claims

1. A method for determining the remaining power of a power battery, characterized in that: The method comprises: Acquiring status information of the vehicle, the status information including the remaining power of the power battery and a first signal sent by the battery management system, the first signal being used to indicate whether the remaining power of the power battery is valid; The remaining power of the power battery is determined according to the remaining power of the power battery and the first signal.

2. The method according to claim 1, characterized in that The determining the remaining power of the power battery according to the remaining power of the power battery and the first signal includes: When the first signal is valid, determining that the remaining power of the power battery is the remaining power of the power battery sent by the battery management system; or When the first signal changes from valid to invalid, it is determined that the remaining power of the power battery is the remaining power of the power battery sent by the battery management system at the last moment.

3. The method according to claim 1 or 2, characterized in that: After obtaining the vehicle status information, the method further includes: Determine whether a repeated power-on flag is set according to the status information; Determine whether a prohibition power supplement flag is set according to the state information and / or the repeated power supplement flag.

4. The method according to claim 3, characterized in that The determining, according to the state information, whether a repeated power-on flag is set includes: When it is determined according to the status information that the vehicle status of the vehicle satisfies a first condition, setting a repeated power replenishment flag; or When it is determined according to the status information that the vehicle status of the vehicle satisfies a second condition, the repeated power replenishment flag is reset.

5. The method according to claim 3 or 4, characterized in that: The determining whether the power supplement prohibition flag is set according to the state information and / or the repeated power supplement flag includes: In a key cycle, judging whether the vehicle state of the vehicle satisfies a third condition according to the state information and / or the repeated power replenishment flag; If yes, set the prohibition power supplement flag to a bit; If not, the power replenishment prohibition flag is reset.

6. The method according to claim 3, characterized in that After determining whether the power supplement prohibition flag is set according to the state information and the repeated power supplement flag, the method further includes: It is determined that the vehicle state of the vehicle satisfies a fourth condition according to the state information and the power replenishment prohibition flag, and the battery is recharged.

7. The method according to claim 6, characterized in that After the battery is charged, the method further comprises: It is determined according to the state information and / or the power replenishment prohibition flag that the vehicle state satisfies a fifth condition, and the battery is not replenished.

8. An electronic device comprising a memory and a processor, wherein the memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions, characterized in that: When the program instructions are loaded and executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

9. A computer storage medium, characterized in that The computer storage medium includes a stored computer program, wherein when the computer program is executed, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that The computer program product comprises a stored computer program, wherein when the computer program is executed, the device where the computer program product is located is controlled to execute the method according to any one of claims 1 to 7.

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