Method, device, electronic device and vehicle for controlling battery charging

Abstract

The present disclosure relates to a method, device, electronic device and vehicle for controlling battery charging, and relates to the field of battery technology. The method includes: when the battery of the vehicle is in a normal working state and the battery is in a charging state, obtaining the temperature value and the first voltage value of the battery; determining the charging control strategy of the battery according to the temperature value and the first voltage value; and controlling the battery charging according to the charging control strategy. In this way, when the battery of the vehicle is in a normal working state and the battery is in a charging state, the charging control strategy of the battery can be determined according to the temperature value and the first voltage value of the battery. When the current state of the battery is not suitable for the current charging method, the battery is controlled to execute a new charging control strategy, thereby avoiding the battery being charged for a long time in an inappropriate charging method, which affects the battery life.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a method, device, electronic device and vehicle for controlling battery charging. Background Art

[0002] With the continuous development of vehicle technology, vehicle functions are becoming more complete. The emergency call system is a very important function on the vehicle, which can provide emergency rescue services to users when an emergency occurs in the vehicle. The power supply battery can provide power to the emergency call system in an emergency to ensure that it can work normally. Therefore, it is particularly important whether the battery that powers the emergency call system can work normally.

[0003] At present, daily monitoring of batteries only monitors the battery life. However, during the charging process, due to changes in voltage and other factors, the battery is not suitable for continuing to maintain the current charging method. If the battery charging method cannot be discovered and corrected in time, it will directly affect the battery life. Summary of the invention

[0004] In order to solve the above problems, the present disclosure provides a method, an apparatus, an electronic device and a vehicle for controlling battery charging.

[0005] In a first aspect, the present disclosure provides a method for controlling battery charging, the method comprising: when a battery of a vehicle is in a normal working state and the battery is in a charging state, obtaining a temperature value and a first voltage value of the battery; determining a charging control strategy of the battery based on the temperature value and the first voltage value; and controlling the battery charging according to the charging control strategy.

[0006] Optionally, the charging control strategy includes constant current charging, constant voltage charging and stop charging, and determining the target charging mode of the battery according to the temperature value and the first voltage value includes: when the temperature value is within a preset temperature range and the first voltage value is less than or equal to a first preset voltage value, determining that the charging control strategy is the constant current charging; or, when the temperature value is within the preset temperature range and the first voltage value is greater than the first preset voltage value and less than or equal to a second preset voltage value, determining that the charging control strategy is the constant voltage charging; or, when the temperature value is within the preset temperature range and the second voltage value is greater than the second preset voltage value, determining that the charging control strategy is the stop charging; or, when the temperature value is outside the preset temperature range, determining that the charging control strategy is the stop charging.

[0007] Optionally, controlling the charging of the battery according to the charging control strategy includes: when the charging control strategy is constant current charging, charging the battery according to the constant current charging method; or, when the charging control strategy is constant voltage charging, charging the battery according to the constant voltage charging method; or, when the charging control strategy is stop charging, controlling the battery to stop charging.

[0008] Optionally, whether the battery is in a normal working state is determined by: periodically acquiring a charging state of the battery and a second voltage value of the battery; and determining whether the battery is in a normal working state according to the charging state of the battery and the second voltage value.

[0009] Optionally, determining whether the battery is in a normal working state based on the charging state of the battery and the second voltage value includes: when the battery is in the charging state and the second voltage value is greater than a third preset voltage value, controlling the battery to stop charging, and obtaining the third voltage value of the battery, calculating the voltage difference between the second voltage value and the third voltage value, and determining that the battery is in a normal working state when the voltage difference is less than or equal to the preset voltage difference; or, when the battery is in the charging state and the second voltage value is less than or equal to the third preset voltage value, obtaining the first current value of the battery, and determining that the battery is in a normal working state when the first current value is greater than the preset current value; or, when the battery is in a non-charging state, controlling the battery to start charging and maintain charging for a preset time, obtaining a fourth voltage value of the battery within the preset time, and determining that the battery is in a normal working state when the fourth voltage value is greater than the fourth preset voltage value.

[0010] Optionally, the method further includes: acquiring a fifth voltage value and a second current value of the battery; calculating an impedance of the battery according to the fifth voltage value and the second current value; and determining an aging state of the battery according to the impedance.

[0011] Optionally, determining the aging state of the battery according to the impedance includes: calculating an impedance ratio of the impedance to a preset impedance; and determining that the battery is in an aging state when the impedance ratio is greater than the preset impedance ratio.

[0012] In a second aspect, the present disclosure provides a device for controlling battery charging, the device comprising: a first parameter acquisition module, used to obtain a temperature value and a first voltage value of the battery when the battery of a vehicle is in a normal working state and the battery is in a charging state; a strategy determination module, used to determine a charging control strategy for the battery based on the temperature value and the first voltage value; and a control module, used to control the battery charging according to the charging control strategy.

[0013] Optionally, the strategy determination module is used to determine that the charging control strategy is the constant current charging when the temperature value is within a preset temperature range and the first voltage value is less than or equal to a first preset voltage value; or, when the temperature value is within the preset temperature range and the first voltage value is greater than the first preset voltage value and less than or equal to a second preset voltage value, determine that the charging control strategy is the constant voltage charging; or, when the temperature value is within the preset temperature range and the second voltage value is greater than the second preset voltage value, determine that the charging control strategy is the stop charging; or, when the temperature value is outside the preset temperature range, determine that the charging control strategy is the stop charging.

[0014] Optionally, the control module is used to charge the battery in accordance with the constant current charging method when the charging control strategy is constant current charging; or, when the charging control strategy is constant voltage charging, charge the battery in accordance with the constant voltage charging method; or, when the charging control strategy is stop charging, control the battery to stop charging.

[0015] Optionally, the device also includes: a second parameter acquisition module, used to periodically acquire the charging state of the battery and the second voltage value of the battery; and a working state determination module, used to determine whether the battery is in a normal working state based on the charging state of the battery and the second voltage value.

[0016] Optionally, the working status determination module is used to control the battery to stop charging when the battery is in the charging state and the second voltage value is greater than a third preset voltage value, and obtain the third voltage value of the battery, calculate the voltage difference between the second voltage value and the third voltage value, and determine that the battery is in a normal working state when the voltage difference is less than or equal to the preset voltage difference; or, when the battery is in the charging state and the second voltage value is less than or equal to the third preset voltage value, obtain the first current value of the battery, and determine that the battery is in a normal working state when the first current value is greater than the preset current value; or, when the battery is in a non-charging state, control the battery to start charging and maintain it for a preset time, obtain the fourth voltage value of the battery within the preset time, and determine that the battery is in a normal working state when the fourth voltage value is greater than the fourth preset voltage value.

[0017] Optionally, the device also includes: a third parameter acquisition module, used to acquire a fifth voltage value and a second current value of the battery; an impedance determination module, used to calculate the impedance of the battery according to the fifth voltage value and the second current value; and an aging state determination module, used to determine the aging state of the battery according to the impedance.

[0018] Optionally, the aging state determination module includes: a ratio determination submodule, used to calculate the impedance ratio of the impedance to a preset impedance; and an aging state determination submodule, used to determine that the battery is in an aging state when the impedance ratio is greater than the preset impedance ratio.

[0019] In a third aspect, the present disclosure provides an electronic device, comprising: a memory on which a computer program is stored; and a processor, configured to execute the computer program in the memory to implement the steps of the above-described method.

[0020] In a fourth aspect, the present disclosure provides a vehicle comprising the above-mentioned electronic device.

[0021] Through the above technical solution, the present invention obtains the temperature value and the first voltage value of the battery when the battery of the vehicle is in a normal working state and the battery is in a charging state; determines the charging control strategy of the battery according to the temperature value and the first voltage value; and controls the charging of the battery according to the charging control strategy. In this way, when the battery of the vehicle is in a normal working state and the battery is in a charging state, the charging control strategy of the battery can be determined according to the temperature value and the first voltage value of the battery, and when the current state of the battery is not suitable for the current charging method, the battery is controlled to execute a new charging control strategy, thereby avoiding the battery life being affected by charging in an inappropriate charging method for a long time.

[0022] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0024] Figure 1 is a flow chart of a method for controlling battery charging provided by an embodiment of the present disclosure;

[0025] Figure 2 is a flow chart of another method for controlling battery charging provided by an embodiment of the present disclosure;

[0026] Figure 3 is a flow chart of another method for controlling battery charging provided by an embodiment of the present disclosure;

[0027] Figure 4 is a flow chart of another method for controlling battery charging provided by an embodiment of the present disclosure;

[0028] Figure 5 is a flow chart of another method for controlling battery charging provided by an embodiment of the present disclosure;

[0029] Figure 6 is a flow chart of another method for controlling battery charging provided by an embodiment of the present disclosure;

[0030] Figure 7 is a flow chart of another method for controlling battery charging provided by an embodiment of the present disclosure;

[0031] Figure 8 is a flow chart of another method for controlling battery charging provided by an embodiment of the present disclosure;

[0032] Fig. 9 is a flow chart of another method for controlling battery charging provided by an embodiment of the present disclosure;

[0033] Fig.10 is a structural schematic diagram of a device for controlling battery charging provided by an embodiment of the present disclosure;

[0034] Fig.11 is a structural schematic diagram of another device for controlling battery charging provided by an embodiment of the present disclosure;

[0035] Fig.12 is a structural schematic diagram of another device for controlling battery charging provided by an embodiment of the present disclosure;

[0036] Fig.13is a structural schematic diagram of another device for controlling battery charging provided by an embodiment of the present disclosure;

[0037] Fig.14 is a structural schematic diagram of another device for controlling battery charging provided by an embodiment of the present disclosure;

[0038] Fig.15 is a block diagram of an electronic device provided by an embodiment of the present disclosure;

[0039] Fig.16 It is a block diagram of a vehicle provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0041] In the description below, words such as “first” and “second” are only used for the purpose of distinguishing the description and should not be understood as indicating or implying relative importance or order.

[0042] First, the application scenario of the present disclosure is explained. The present disclosure is applied to the scenario of vehicle battery charging. In this scenario, the battery will be charged in a fixed charging method during the charging process. However, the inventors found that due to changes in other factors such as voltage, the battery may not be suitable for continuing to maintain the current charging method, but in the current battery charging strategy, it is not possible to detect changes in the battery state in time and correct the battery charging method. If the battery state changes but the battery still maintains a fixed charging method for a long time, it will directly affect the battery life, and thus affect the normal use of the vehicle function.

[0043] In order to solve the above problems, the present disclosure provides a method, device, electronic device and vehicle for controlling battery charging, which can determine the battery charging control strategy according to the temperature value and the first voltage value of the battery when the battery of the vehicle is in normal working state and the battery is in charging state, and when the current state of the battery is not suitable for the current charging method, control the battery to execute a new charging control strategy, thereby avoiding the battery service life being affected by charging in an inappropriate charging method for a long time.

[0044] Figure 1 is a flow chart of a method for controlling battery charging provided by an embodiment of the present disclosure, such as Figure 1 As shown, the method comprises the following steps:

[0045] S101. When a battery of a vehicle is in a normal working state and in a charging state, obtain a temperature value and a first voltage value of the battery.

[0046] The temperature value of the battery is acquired by a temperature sensor arranged on the vehicle, and the first voltage value of the battery is acquired by a voltage acquisition circuit arranged on the vehicle.

[0047] S102: Determine a charging control strategy for the battery according to the temperature value and the first voltage value.

[0048] The charging control strategy of the battery includes constant current charging, constant voltage charging and stop charging.

[0049] S103: Control charging of the battery according to the charging control strategy.

[0050] For example, when the charging control strategy is constant current charging, the battery is charged in a constant current charging manner. When the charging control strategy is constant voltage charging, the battery is charged in a constant voltage charging manner. When the charging control strategy is stop charging, the battery is controlled to stop charging.

[0051] It should be noted that if the charging control strategy of the battery determined according to the temperature value and the first voltage value is consistent with the current charging method of the battery, the battery continues to maintain the current charging method, which means that the current state of the battery matches the current charging method of the battery.

[0052] By adopting the above method, when the battery of the vehicle is in normal working condition and the battery is in charging condition, the charging control strategy of the battery can be determined according to the temperature value and the first voltage value of the battery. When the current state of the battery is not suitable for the current charging method, the battery is controlled to execute a new charging control strategy, thereby avoiding the battery life being affected by long-term charging with an inappropriate charging method.

[0053] The following describes whether the battery of the vehicle is in a normal working state in step S101. The following steps can be used to determine whether the battery is in a normal working state, such as: Figure 2 As shown, the method comprises the following steps:

[0054] S201. Periodically obtain a charging state of the battery and a second voltage value of the battery.

[0055] The charging state includes the battery being in a charging state and the battery being in a non-charging state, and the non-charging state means that the battery is in a state of stopping charging. The second voltage value is obtained by a voltage acquisition circuit arranged on the vehicle.

[0056] In addition, in order to obtain data in time, the charging state of the battery and the second voltage value of the battery are obtained periodically, so that the accuracy of data processing can be improved. The acquisition cycle can be set according to the configuration of different batteries, and the present disclosure does not limit this.

[0057] It should be noted that each time the vehicle battery is powered on, the charging state of the battery and the second voltage value of the battery are acquired according to an acquisition cycle. When each acquisition cycle is reached, the charging state of the battery and the second voltage value of the battery are acquired once.

[0058] S202: Determine whether the battery is in a normal working state according to the charging state of the battery and the second voltage value.

[0059] Specifically, whether the battery is in normal working condition can be determined according to the following three methods:

[0060] Method 1: When the battery is in the charging state and the second voltage value is greater than the third preset voltage value, the battery is controlled to stop charging, and the third voltage value of the battery is obtained, the voltage difference between the second voltage value and the third voltage value is calculated, and when the voltage difference is less than or equal to the preset voltage difference, it is determined that the battery is in a normal working state.

[0061] The third voltage value is the voltage value of the battery when charging is stopped, and the third voltage value is obtained by a voltage acquisition circuit arranged on the vehicle. The third preset voltage value and the preset voltage difference can be set according to the configuration of different batteries, and the present disclosure does not limit this.

[0062] When the battery is in an abnormal working state, due to the capacitance effect of the battery, the voltage of the battery will drop instantly after stopping charging, and there will be a large difference with the voltage value in the charging state. Therefore, in this method, when the battery is in the charging state and the second voltage value is greater than the third preset voltage value, it is also necessary to control the battery to stop charging, obtain the third voltage value of the battery, and calculate the voltage difference between the second voltage value and the third voltage value, so as to more accurately determine the working state of the battery. When the voltage difference is less than or equal to the preset voltage difference, it is determined that the battery is in a normal working state. When the voltage difference is greater than the preset voltage difference, it is determined that the battery is in an abnormal working state.

[0063] Method 2: When the battery is in the charging state and the second voltage value is less than or equal to the third preset voltage value, obtain the first current value of the battery, and when the first current value is greater than the preset current value, determine that the battery is in a normal working state.

[0064] The first current value of the battery is obtained by a current acquisition circuit arranged on the vehicle. The preset current value can be set according to the configuration of different batteries, which is not limited in the present disclosure.

[0065] In this manner, when the second voltage value is less than or equal to the third preset voltage value, it indicates that the battery is currently in the charging stage of constant current charging. At this time, it is necessary to obtain the first current value of the battery and compare it with the preset current value. If the first current value is greater than the preset current value, it indicates that the battery is in a normal working state. If the first current value is less than or equal to the preset current value, it indicates that the battery is in an abnormal working state.

[0066] Method three: when the battery is in a non-charging state, control the battery to start charging and maintain charging for a preset time, obtain a fourth voltage value of the battery within the preset time, and determine that the battery is in a normal working state when the fourth voltage value is greater than a fourth preset voltage value.

[0067] The fourth voltage value of the battery is obtained by a voltage acquisition circuit arranged on the vehicle. The preset time and the fourth preset voltage value can be set according to the configuration of different batteries, which is not limited in the present disclosure.

[0068] It should be noted that the working state of the battery needs to be detected based on the voltage of the battery when it is in a charging state. Since when the battery is in a non-charging state, the voltage value at this time is not the voltage value of the battery in a charging state, in order to more accurately determine the working state of the battery. Therefore, in this method, to determine that the battery is in a normal working state, it is necessary to first control the battery to start charging and maintain it for a preset time, and obtain the average value of the voltage within the preset time as the fourth voltage value of the battery. When the fourth voltage value is greater than the fourth preset voltage value, it is determined that the battery is in a normal working state. When the fourth voltage value is less than or equal to the fourth preset voltage value, it is determined that the battery is in an abnormal working state.

[0069] In addition, if the battery is not working, it may be because part of the battery circuit is short-circuited or open-circuited, causing problems with the circuit connection of the battery and preventing it from working properly. In this case, charging of the battery should be stopped to avoid dangerous accidents.

[0070] The following describes how to determine the target charging mode of the battery according to the temperature value and the first voltage value in step S102. Specifically, the target charging mode of the battery can be determined according to the following four situations:

[0071] Case 1: when the temperature value is within the preset temperature range and the first voltage value is less than or equal to the first preset voltage value, it is determined that the charging control strategy is the constant current charging.

[0072] The first voltage value is obtained by a voltage acquisition circuit arranged on the vehicle. The preset temperature range and the first preset voltage value can be set according to the configuration of different batteries, which is not limited in the present disclosure.

[0073] Specifically, if the temperature value is within the preset temperature range, it indicates that the current state of the battery is suitable for charging the battery. Further, if the first voltage value is less than or equal to the first preset voltage value, it indicates that the current voltage of the battery is low, and constant current charging should be adopted at this time, because constant current charging can charge the battery faster.

[0074] Scenario 2: When the temperature value is within the preset temperature range and the first voltage value is greater than the first preset voltage value and less than or equal to the second preset voltage value, the charging control strategy is determined to be the constant voltage charging.

[0075] The second preset voltage value may be set according to the configuration of different batteries, which is not limited in the present disclosure.

[0076] Specifically, when the first voltage value is greater than the first preset voltage value and less than or equal to the second preset voltage value, it indicates that the current voltage of the battery is relatively high, and constant voltage charging should be used at this time to better protect the battery and extend the battery life.

[0077] Scenario 3: when the temperature value is within the preset temperature range and the second voltage value is greater than the second preset voltage value, the charging control strategy is determined to be the stop charging.

[0078] Specifically, when the second voltage value is greater than the second preset voltage value, it indicates that the current voltage of the battery is too high. If the battery continues to be charged, the service life of the battery may be affected or even a dangerous accident may occur. Therefore, in this case, charging of the battery should be stopped.

[0079] Scenario 4: When the temperature value is outside the preset temperature range, the charging control strategy is determined to stop charging.

[0080] Specifically, if the temperature value is outside the preset temperature range, it indicates that the current state of the battery is not suitable for charging the battery. Therefore, when the temperature value is outside the preset temperature range, charging of the battery should be stopped to better protect the battery circuit and extend the service life of the battery.

[0081] In addition, when the battery is in an abnormal working state, it indicates that the current working state of the battery is not suitable for charging, and the battery should be controlled to stop charging.

[0082] like Figure 3 As shown, when the battery of the vehicle is in a normal working state and the battery is in a charging state, the method further includes the following steps:

[0083] S301, obtaining a fifth voltage value and a second current value of the battery.

[0084] Taking into account possible fluctuations in voltage and current, in order to more accurately calculate the impedance value in the following step, in this step, the voltage value and current value of the battery are obtained multiple times, and the average value of the multiple voltage values ​​and the multiple current values ​​is taken as the fifth voltage value and the second current value.

[0085] For example, twenty groups of voltage values ​​and current values ​​may be obtained, and the twenty groups of voltage values ​​may be averaged as the fifth voltage value, and the twenty groups of current values ​​may be averaged as the second current value.

[0086] S302: Calculate the impedance of the battery according to the fifth voltage value and the second current value.

[0087] The calculation method for calculating the impedance of the battery according to the fifth voltage value and the second current value may refer to the relevant calculation method in the prior art, which will not be described in detail here.

[0088] S303: Determine the aging state of the battery according to the impedance.

[0089] Specifically, as the battery usage time increases, the charging voltage of the battery will become smaller and smaller, and the impedance value will become larger and larger.

[0090] Specifically, Figure 4 As shown, the above step S303 may include the following steps:

[0091] S3031. Calculate the impedance ratio between the impedance and the preset impedance.

[0092] Wherein, when the vehicle is powered on for the first time after leaving the factory, the impedance calculated based on the fifth voltage value of the battery and the second current value is used as the preset impedance.

[0093] S3032: When the impedance ratio is greater than a preset impedance ratio, determine that the battery is in an aging state.

[0094] The preset impedance ratio can be set according to the configuration of different batteries, which is not limited in the present disclosure.

[0095] Specifically, when the impedance ratio is greater than a preset impedance ratio, it indicates that the battery is in a life crisis, that is, the battery is in an aging state.

[0096] For example, the preset impedance ratio is 10. If the impedance ratio is greater than 10, the battery is determined to be in an aged state. If the impedance ratio is less than or equal to 10, the battery is determined to be in a non-aged state.

[0097] Considering that the battery is in an aging state, it indicates that the battery is no longer suitable for continued use, and the user should be reminded to check the battery and replace it in time. Figure 5 As shown, the method also includes:

[0098] S304: When it is determined that the battery is in an aging state, a prompt message is issued.

[0099] The prompt information may be provided by a voice prompt device or a vehicle-mounted display screen arranged on the vehicle.

[0100] For example, when it is determined that the battery is in an aging state, the prompt message may be “The battery is aging, please check and replace it in time”.

[0101] By adopting the above method, when the battery of the vehicle is in normal working condition and the battery is in charging condition, the charging control strategy of the battery can be determined according to the temperature value and the first voltage value of the battery. When the current state of the battery is not suitable for the current charging method, the battery is controlled to execute a new charging control strategy, thereby avoiding the battery life being affected by long-term charging with an inappropriate charging method.

[0102] Figure 6 Another method for controlling battery charging provided by an embodiment of the present disclosure is as follows: Figure 6 As shown, the method comprises the following steps:

[0103] S601. Periodically obtain a charging state of the battery and a second voltage value of the battery.

[0104] The charging state of the battery includes the battery being in a charging state and the battery being in a non-charging state.

[0105] S602: Determine whether the battery is in a normal working state according to the charging state of the battery and the second voltage value.

[0106] Specifically, when the battery is in the charging state and the second voltage value is greater than the third preset voltage value, the battery is controlled to stop charging, and the third voltage value of the battery is obtained, and the voltage difference between the second voltage value and the third voltage value is calculated, and when the voltage difference is less than or equal to the preset voltage difference, it is determined that the battery is in a normal working state. Or,

[0107] When the battery is in the charging state and the second voltage value is less than or equal to the third preset voltage value, the first current value of the battery is obtained, and when the first current value is greater than the preset current value, it is determined that the battery is in a normal working state. Or,

[0108] When the battery is in a non-charging state, the battery is controlled to start charging and maintain charging for a preset time, a fourth voltage value of the battery within the preset time is obtained, and when the fourth voltage value is greater than a fourth preset voltage value, it is determined that the battery is in a normal working state.

[0109] S603: When the battery of the vehicle is in a normal working state and the battery is in a charging state, obtain a temperature value and a first voltage value of the battery.

[0110] S604: Determine a charging control strategy for the battery according to the temperature value and the first voltage value.

[0111] Specifically, when the temperature value is within the preset temperature range and the first voltage value is less than or equal to the first preset voltage value, the charging control strategy is determined to be the constant current charging.

[0112] When the temperature value is within the preset temperature range and the first voltage value is greater than the first preset voltage value and less than or equal to the second preset voltage value, the charging control strategy is determined to be the constant voltage charging.

[0113] When the temperature value is within the preset temperature range and the second voltage value is greater than the second preset voltage value, the charging control strategy is determined to be to stop charging.

[0114] When the temperature value is outside the preset temperature range, the charging control strategy is determined to stop charging.

[0115] S605: Control charging of the battery according to the charging control strategy.

[0116] S606: Acquire a fifth voltage value and a second current value of the battery.

[0117] S607: Calculate the impedance of the battery according to the fifth voltage value and the second current value.

[0118] S608: Determine the aging state of the battery according to the impedance.

[0119] Specifically, the impedance ratio between the impedance and the preset impedance is calculated first, and when the impedance ratio is greater than the preset impedance ratio, it is determined that the battery is in an aging state.

[0120] S609: When it is determined that the battery is in an aging state, a prompt message is issued.

[0121] By adopting the above method, when the battery of the vehicle is in normal working condition and the battery is in charging condition, the charging control strategy of the battery can be determined according to the temperature value and the first voltage value of the battery. When the current state of the battery is not suitable for the current charging method, the battery is controlled to execute a new charging control strategy, thereby avoiding the battery life being affected by long-term charging with an inappropriate charging method.

[0122] The following is a detailed description of how to determine whether the battery is in normal working condition. Figure 7 As shown, the method comprises the following steps:

[0123] S701. Periodically obtain the charging status of the battery.

[0124] S702: Determine whether the battery is in a charging state.

[0125] If the battery is in a charging state, execute step S703;

[0126] If the battery is in a non-charging state, execute step S711.

[0127] S703: Obtain a second voltage value of the battery.

[0128] S704: Determine whether the second voltage value is greater than a third preset voltage value.

[0129] If the second voltage value is greater than the third preset voltage value, executing step S705;

[0130] If the second voltage value is less than or equal to the third preset voltage value, step S714 is executed.

[0131] S705: Control the battery to stop charging.

[0132] S706: Obtain a third voltage value of the battery.

[0133] S707: Calculate the voltage difference between the second voltage value and the third voltage value.

[0134] S708: Determine whether the pressure difference is less than or equal to a preset pressure difference.

[0135] If the pressure difference is less than or equal to the preset pressure difference, execute step S709;

[0136] If the pressure difference is greater than the preset pressure difference, step S710 is executed.

[0137] S709: Determine that the battery is in normal working condition.

[0138] S710: Determine that the battery is in an abnormal working state.

[0139] S711, controlling the battery to start charging and maintain charging for a preset time.

[0140] S712: Obtain a fourth voltage value of the battery within the preset time.

[0141] S713: Determine whether the fourth voltage value is greater than a fourth preset voltage value.

[0142] If the fourth voltage value is greater than the fourth preset voltage value, executing step S709;

[0143] If the fourth voltage value is less than or equal to the fourth preset voltage value, step S710 is executed.

[0144] S714: Obtain a first current value of the battery.

[0145] S715: Determine whether the first current value is greater than a preset current value.

[0146] If the first current value is greater than the preset current value, executing step S709;

[0147] If the first current value is less than or equal to the preset current value, step S710 is executed.

[0148] The following is a detailed description of determining the target charging method for the battery. Figure 8 As shown, the method comprises the following steps:

[0149] S801, determining whether the battery is in a normal working state and in a charging state.

[0150] If the battery is in normal working state and in charging state, execute step S802;

[0151] If the battery is in an abnormal working state and / or in a non-charging state, step S809 is executed.

[0152] S802: Obtain the temperature value of the battery.

[0153] S803: Determine whether the temperature value is within a preset temperature range.

[0154] If the temperature value is within the preset temperature range, execute step S804;

[0155] If the temperature value is outside the preset temperature range, step S809 is executed.

[0156] S804: Obtain a first voltage value of the battery.

[0157] S805: Determine whether the first voltage value is less than or equal to a first preset voltage value.

[0158] If the first voltage value is less than or equal to the first preset voltage value, executing step S806;

[0159] If the first voltage value is greater than the first preset voltage value, step S807 is executed.

[0160] S806: Determine that the charging control strategy is constant current charging.

[0161] S807: Determine whether the first voltage value is less than or equal to a second preset voltage value.

[0162] If the first voltage value is less than or equal to the second preset voltage value, executing step S808;

[0163] If the first voltage value is greater than the second preset voltage value, step S809 is executed.

[0164] S808: Determine that the charging control strategy is constant voltage charging.

[0165] S809: Determine that the charging control strategy is to stop charging.

[0166] The following is a detailed description of determining the aging state of the battery. Fig. 9 As shown, the method comprises the following steps:

[0167] S901: Determine whether the battery is in a normal working state and the battery is in a charging state.

[0168] If the battery is in a normal working state and the battery is in a charging state, execute step S902;

[0169] If the battery is in an abnormal working state or / and the battery is in a non-charging state, step S901 is executed.

[0170] S902: Acquire a fifth voltage value and a second current value of the battery.

[0171] Wherein, in this step, the voltage value and the current value of the battery are obtained multiple times, and the average values ​​of the multiple voltage values ​​and the multiple current values ​​are taken as the fifth voltage value and the second current value.

[0172] S903: Calculate the impedance of the battery according to the fifth voltage value and the second current value.

[0173] S904: Determine whether the impedance is the impedance recorded for the first time.

[0174] If the impedance is recorded for the first time, execute step S905;

[0175] If the impedance is not the impedance recorded for the first time, step S906 is executed.

[0176] S905: Use the impedance value as a preset impedance.

[0177] S906: Calculate the impedance ratio between the impedance and the preset impedance.

[0178] S907: Determine whether the impedance ratio is greater than a preset impedance ratio.

[0179] If the impedance ratio is greater than the preset impedance ratio, executing step S908;

[0180] If the impedance ratio is less than or equal to the preset impedance ratio, step S909 is executed.

[0181] S908: Determine that the battery is in an aging state.

[0182] S909: Determine that the battery is in a non-aging state.

[0183] The fact that the battery is in a non-aging state means that the battery can continue to work normally.

[0184] By adopting the above method, when the battery of the vehicle is in normal working condition and the battery is in charging condition, the charging control strategy of the battery can be determined according to the temperature value and the first voltage value of the battery. When the current state of the battery is not suitable for the current charging method, the battery is controlled to execute a new charging control strategy, thereby avoiding the battery life being affected by long-term charging with an inappropriate charging method.

[0185] Fig.10 A device for controlling battery charging provided by an embodiment of the present disclosure includes:

[0186] The first parameter acquisition module 1001 is used to acquire a temperature value and a first voltage value of the battery when the battery of the vehicle is in a normal working state and the battery is in a charging state;

[0187] A strategy determination module 1002, configured to determine a charging control strategy of the battery according to the temperature value and the first voltage value;

[0188] The control module 1003 is used to control the charging of the battery according to the charging control strategy.

[0189] By adopting the above-mentioned device, when the battery of the vehicle is in normal working condition and the battery is in charging condition, the charging control strategy of the battery can be determined according to the temperature value and the first voltage value of the battery. When the current state of the battery is not suitable for the current charging method, the battery is controlled to execute a new charging control strategy, thereby avoiding the battery service life being affected by charging in an inappropriate charging method for a long time.

[0190] Optionally, the strategy determination module 1002 is used to determine that the charging control strategy is the constant current charging when the temperature value is within a preset temperature range and the first voltage value is less than or equal to a first preset voltage value; or,

[0191] When the temperature value is within the preset temperature range and the first voltage value is greater than the first preset voltage value and less than or equal to the second preset voltage value, determining that the charging control strategy is the constant voltage charging; or,

[0192] When the temperature value is within the preset temperature range and the second voltage value is greater than the second preset voltage value, the charging control strategy is determined to be the stop charging; or, when the temperature value is outside the preset temperature range, the charging control strategy is determined to be the stop charging.

[0193] Optionally, the control module 1003 is used to charge the battery in a constant current charging manner when the charging control strategy is constant current charging; or,

[0194] When the charging control strategy is constant voltage charging, charging the battery in the constant voltage charging mode; or,

[0195] When the charging control strategy is to stop charging, the battery is controlled to stop charging.

[0196] Alternatively, if Fig.11 As shown, the device further includes: a second parameter acquisition module 1004, used to periodically acquire the charging state of the battery and the second voltage value of the battery;

[0197] The working state determining module 1005 is used to determine whether the battery is in a normal working state according to the charging state of the battery and the second voltage value.

[0198] Optionally, the working state determining module 1005 is used to control the battery to stop charging when the battery is in the charging state and the second voltage value is greater than a third preset voltage value, and obtain the third voltage value of the battery, calculate the voltage difference between the second voltage value and the third voltage value, and determine that the battery is in a normal working state when the voltage difference is less than or equal to the preset voltage difference; or,

[0199] When the battery is in the charging state and the second voltage value is less than or equal to a third preset voltage value, obtaining a first current value of the battery, and determining that the battery is in a normal working state when the first current value is greater than a preset current value; or

[0200] When the battery is in a non-charging state, the battery is controlled to start charging and maintain charging for a preset time, a fourth voltage value of the battery within the preset time is obtained, and when the fourth voltage value is greater than a fourth preset voltage value, it is determined that the battery is in a normal working state.

[0201] Alternatively, if Fig.12 As shown, the device also includes:

[0202] A third parameter acquisition module 1006, used to acquire a fifth voltage value and a second current value of the battery;

[0203] An impedance determination module 1007, configured to calculate the impedance of the battery according to the fifth voltage value and the second current value;

[0204] The aging state determination module 1008 is used to determine the aging state of the battery according to the impedance.

[0205] Alternatively, if Fig.13 As shown, the aging state determination module 1008 includes:

[0206] A ratio determination submodule 10081 is used to calculate an impedance ratio between the impedance and a preset impedance;

[0207] The aging state determining submodule 10082 is used to determine that the battery is in an aging state when the impedance ratio is greater than a preset impedance ratio.

[0208] Alternatively, if Fig.14 As shown, the device also includes:

[0209] The prompt module 1009 is used to issue a prompt message when it is determined that the battery is in an aging state.

[0210] By adopting the above-mentioned device, when the battery of the vehicle is in normal working condition and the battery is in charging condition, the charging control strategy of the battery can be determined according to the temperature value and the first voltage value of the battery. When the current state of the battery is not suitable for the current charging method, the battery is controlled to execute a new charging control strategy, thereby avoiding the battery service life being affected by charging in an inappropriate charging method for a long time.

[0211] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0212] Fig.15 1 is a block diagram of an electronic device 1500 provided by an embodiment of the present disclosure. Fig.15As shown, the electronic device 1500 may include: a processor 1501 and a memory 1502. The electronic device 1500 may also include one or more of a multimedia component 1503, an input / output (I / O) interface 1504, and a communication component 1505.

[0213] The processor 1501 is used to control the overall operation of the electronic device 1500 to complete all or part of the steps in the above-mentioned method for controlling battery charging. The memory 1502 is used to store various types of data to support the operation of the electronic device 1500, and these data may include, for example, instructions for any application or method used to operate on the electronic device 1500, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 1502 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 1503 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, which is used to receive external audio signals. The received audio signal may be further stored in the memory 1502 or sent through the communication component 1505. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 1504 provides an interface between the processor 1501 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 1505 is used for wired or wireless communication between the electronic device 1500 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 1505 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0214] In an exemplary embodiment, the electronic device 1500 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned method for controlling battery charging.

[0215] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned method for controlling battery charging are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 1502 including program instructions, and the above-mentioned program instructions can be executed by the processor 1501 of the electronic device 1500 to complete the above-mentioned method for controlling battery charging.

[0216] Fig.16 A vehicle 1600 provided in an embodiment of the present disclosure includes: Fig.15 Electronic device 1500 is shown.

[0217] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, the technical solution of the present disclosure can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present disclosure. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0218] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for controlling battery charging, characterized in that: The method comprises: When a battery of the vehicle is in a normal working state and the battery is in a charging state, obtaining a temperature value and a first voltage value of the battery; determining a charging control strategy for the battery according to the temperature value and the first voltage value; Controlling charging of the battery according to the charging control strategy; Determine if the battery is in working order by: Periodically acquiring a charging state of the battery and a second voltage value of the battery; determining whether the battery is in a normal working state according to the charging state of the battery and the second voltage value; The determining, according to the charging state of the battery and the second voltage value, whether the battery is in a normal working state comprises: When the battery is in the charging state and the second voltage value is greater than a third preset voltage value, control the battery to stop charging, obtain the third voltage value of the battery, calculate the voltage difference between the second voltage value and the third voltage value, and determine that the battery is in a normal working state when the voltage difference is less than or equal to the preset voltage difference; or When the battery is in the charging state and the second voltage value is less than or equal to a third preset voltage value, obtaining a first current value of the battery, and determining that the battery is in a normal working state when the first current value is greater than a preset current value; or When the battery is in a non-charging state, the battery is controlled to start charging and maintain charging for a preset time, a fourth voltage value of the battery within the preset time is obtained, and when the fourth voltage value is greater than a fourth preset voltage value, it is determined that the battery is in a normal working state.

2. The method according to claim 1, characterized in that The charging control strategy includes constant current charging, constant voltage charging and stop charging, and the charging control strategy of the battery is determined according to the temperature value and the first voltage value, including: When the temperature value is within a preset temperature range and the first voltage value is less than or equal to a first preset voltage value, determining that the charging control strategy is the constant current charging; or, When the temperature value is within the preset temperature range and the first voltage value is greater than the first preset voltage value and less than or equal to the second preset voltage value, determining that the charging control strategy is the constant voltage charging; or, When the temperature value is within the preset temperature range and the first voltage value is greater than the second preset voltage value, determining that the charging control strategy is to stop charging; or, When the temperature value is outside the preset temperature range, the charging control strategy is determined to be stopping charging.

3. The method according to claim 2, characterized in that Controlling the battery charging according to the charging control strategy includes: When the charging control strategy is constant current charging, charging the battery in the constant current charging manner; or, When the charging control strategy is constant voltage charging, charging the battery in the constant voltage charging manner; or, When the charging control strategy is to stop charging, the battery is controlled to stop charging.

4. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: Acquire a fifth voltage value and a second current value of the battery; calculating the impedance of the battery according to the fifth voltage value and the second current value; An aging state of the battery is determined based on the impedance.

5. The method according to claim 4, characterized in that Determining the aging state of the battery according to the impedance includes: Calculating an impedance ratio between the impedance and a preset impedance; When the impedance ratio is greater than a preset impedance ratio, it is determined that the battery is in an aging state.

6. A device for controlling battery charging, characterized in that: The device comprises: A first parameter acquisition module, used for acquiring a temperature value and a first voltage value of the battery when the battery of the vehicle is in a normal working state and the battery is in a charging state; a strategy determination module, configured to determine a charging control strategy of the battery according to the temperature value and the first voltage value; A control module, used for controlling the charging of the battery according to the charging control strategy; The device further includes: a second parameter acquisition module, configured to periodically acquire a charging state of the battery and a second voltage value of the battery; a working state determining module, used for determining whether the battery is in a normal working state according to the charging state of the battery and the second voltage value; The working state determination module is used to control the battery to stop charging when the battery is in the charging state and the second voltage value is greater than a third preset voltage value, and obtain the third voltage value of the battery, calculate the voltage difference between the second voltage value and the third voltage value, and determine that the battery is in a normal working state when the voltage difference is less than or equal to the preset voltage difference; or, when the battery is in the charging state and the second voltage value is less than or equal to the third preset voltage value, obtain the first current value of the battery, and determine that the battery is in a normal working state when the first current value is greater than the preset current value; or, when the battery is in a non-charging state, control the battery to start charging and maintain it for a preset time, obtain the fourth voltage value of the battery within the preset time, and determine that the battery is in a normal working state when the fourth voltage value is greater than the fourth preset voltage value.

7. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 5.

8. A vehicle, characterized in that: The electronic device comprising the electronic device described in claim 7 above.

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