Vehicle battery power-loss monitoring method and device

Abstract

The present invention relates to the field of battery technology, and provides a method and device for monitoring battery power failure of a vehicle. The method comprises: detecting the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status, and the vehicle mileage; based on the vehicle status, determining the cause of the battery power failure according to one or more of the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status, and the vehicle mileage. The present invention can accurately determine the cause of battery power failure and reduce manpower and material resources.

Description

Technical Field

[0001] The present invention relates to the technical field of storage batteries, and in particular to a method and device for monitoring low-power storage batteries of a vehicle. Background Art

[0002] Lead-acid batteries serve as the power source for the entire vehicle and provide energy for various electrical components. The current method for determining the cause of battery depletion is to remove the depleted battery from the vehicle for testing, and to inquire about the driver's use of the vehicle to comprehensively determine the cause of the battery depletion. However, communicating with the driver, removing the battery and testing it all require a lot of manpower and material resources. There will inevitably be deviations in the driving habits reported by the driver and the battery testing methods. The lack of professionalism of maintenance personnel in batteries will also lead to the accuracy of the judgment of the cause of battery depletion. Summary of the invention

[0003] In view of this, the present invention aims to provide a method for monitoring low battery of a vehicle so as to accurately determine the cause of low battery and reduce manpower and material resources.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A method for monitoring low battery of a vehicle, the method comprising: detecting the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage; based on the vehicle status, determining the cause of the low battery according to one or more of the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage.

[0006] Further, the determining of the cause of the battery power loss based on the state of the vehicle according to one or more of the battery state, the vehicle power state, the engine state, the power generation state and the mileage of the vehicle includes: when it is determined that the state of the vehicle is in inventory, and it is detected that in a preset number of detections, the battery state is a battery state of charge value less than or equal to a first charge threshold, determining that the cause of the battery power loss is improper maintenance-accumulated abnormality; when it is detected that the battery state is a battery state of charge value less than or equal to the first charge threshold, and the battery state of charge value is not greater than the second charge threshold within a first preset time thereafter, determining that the cause of the battery power loss is improper maintenance-charging abnormality; when no signal of the battery state of charge value is detected within a second preset time, determining that the cause of the battery power loss is improper maintenance-maintenance timeout; when it is detected that the battery state is a battery health state value less than or equal to the first health threshold, determining that the cause of the battery power loss is improper maintenance-battery aging.

[0007] Furthermore, the determining of the cause of the battery low power based on the state of the vehicle according to one or more of the battery state, the vehicle power state, the vehicle engine state, the vehicle power generation state and the vehicle mileage includes: during the period in which the state of the vehicle is determined to be sold, when it is detected that the vehicle power state is ON or ACC and the engine state of the vehicle is in the off state, and the change in the battery state of charge value of the battery state is greater than or equal to a third charge threshold, determining that the cause of the battery low power is abnormal battery consumption-rapid decline; when it is detected that the vehicle power state is ON or ACC and the engine state of the vehicle is in the off state, and the battery state of charge value of the battery state is less than a fourth charge threshold, determining that the cause of the battery low power is abnormal battery consumption-low power.

[0008] Furthermore, based on the state of the vehicle, determining the cause of the battery depletion according to one or more of the battery state, the vehicle power state, the vehicle engine state, the vehicle power generation state and the vehicle mileage includes: when it is determined that the state of the vehicle is in the full life cycle, when it is detected that the vehicle power state is OFF and continues for a third preset time, or when the number of times the vehicle power state is OFF is greater than a preset number within a fourth preset time and each time continues for greater than or equal to a fifth preset time, determining that the cause of the battery depletion is abnormal wakeup of the vehicle.

[0009] Furthermore, the determining of the cause of the battery low power based on the state of the vehicle according to one or more of the battery state, the vehicle power state, the engine state, the power generation state and the mileage of the vehicle includes: when it is determined that the state of the vehicle is an exhibition vehicle, when it is detected that the battery state is that the battery state of charge value is less than or equal to a fourth charge threshold, and the battery state of charge value is not greater than the first charge threshold within a sixth preset time thereafter, determining that the cause of the battery low power is improper maintenance-exhibition vehicle abnormality.

[0010] Furthermore, based on the state of the vehicle, determining the cause of the battery low power according to one or more of the battery state, the vehicle power state, the engine state of the vehicle, the power generation state of the vehicle and the mileage of the vehicle includes: when it is determined that the state of the vehicle is in the sold period, when it is detected that the last battery state before the vehicle is hibernated is that the battery charge state value is within a preset range, and thereafter no signal of the battery charge state value is detected for greater than or equal to a seventh preset time or the engine state of the vehicle is in the off state, it is determined that the cause of the battery low power is long-term storage.

[0011] Furthermore, based on the state of the vehicle, determining the cause of the battery depletion according to one or more of the battery state, the vehicle power state, the engine state, the power generation state of the vehicle and the mileage of the vehicle includes: when it is determined that the state of the vehicle is in the sold period, when it is detected that the mileage of the vehicle is less than the first preset mileage within an eighth preset time, and the single driving time is less than a ninth preset time, determining that the cause of the battery depletion is short-mileage failure.

[0012] Furthermore, the method of determining the cause of the battery low power based on the state of the vehicle according to one or more of the battery state, the vehicle power state, the vehicle engine state, the vehicle power generation state and the vehicle mileage includes: when it is determined that the state of the vehicle is sold, when it is detected that the vehicle power state is ON, the engine state of the vehicle is in the starting state and the power generation state of the vehicle has a power generation failure, when the battery states are all battery charge state values ​​less than a fourth charge threshold, determining that the cause of the battery low power is a power system failure.

[0013] Compared with the prior art, the vehicle battery low power monitoring method of the present invention has the following advantages:

[0014] The present invention first detects the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage, and then based on the vehicle status, determines the cause of the battery power failure according to one or more of the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage. The present invention can accurately determine the cause of the battery power failure without relying on human experience, and reduce manpower and material resources.

[0015] Another object of the present invention is to provide a battery low power monitoring device for a vehicle to accurately determine the cause of battery low power and reduce manpower and material resources.

[0016] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0017] A device for monitoring low battery of a vehicle, the device comprising: a detection unit and a processing unit, wherein the detection unit is used to detect the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage; the processing unit is used to determine the cause of the low battery based on the status of the vehicle and according to one or more of the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage.

[0018] Furthermore, the detection unit includes: a battery sensor, a body controller, an engine control module and an instrument.

[0019] The advantages of the battery low-power monitoring device for a vehicle and the battery low-power monitoring method for the vehicle described above over the prior art are the same and will not be described in detail here.

[0020] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a flow chart of a method for monitoring battery power failure of a vehicle provided by an embodiment of the present invention;

[0023] Figure 2 is a curve diagram of SOC and SOH provided by an embodiment of the present invention;

[0024] Figure 3It is a structural block diagram of a battery low-power monitoring device for a vehicle provided by one embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1 Detection unit 2 Processing unit DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0029] Figure 1 FIG. 1 is a flow chart of a method for monitoring a battery power shortage in a vehicle provided by an embodiment of the present invention. Figure 1 As shown, the method includes:

[0030] Step S11, detecting the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage;

[0031] For example, the battery status can be detected by an Electronic Battery Sensor (EBS), the vehicle power status can be detected by a body controller (BCM), the vehicle engine status can be detected by an engine control module (ECM), and the vehicle mileage can be detected by an instrument. After the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status, and the vehicle mileage are detected, a signal containing the above status can be sent to a gateway (GateWay, GW), which then transmits the signal of the above status to a vehicle-mounted terminal (TelematicsBOX, T-BOX), and T-BOX transmits the signal of the above status to a data platform.

[0032] Step S12, based on the state of the vehicle, determines the cause of the battery depletion according to one or more of the battery state, the vehicle power state, the vehicle engine state, the vehicle power generation state and the vehicle mileage.

[0033] For example, for each vehicle, the data platform may store a mark representing the status of the vehicle. For example, if the vehicle is in inventory, it is marked as inventory, and after it has been sold, it is marked as sold. After receiving the signal of the above status, the data platform can determine the reason for the battery power loss based on it. When the vehicle is in different states, the method of determining the reason for the battery power loss is different. The details will be described in detail below, and the reasons for power loss are classified into the following 7 types. It should be noted that the following data are all examples and do not limit the present invention.

[0034] First, when the vehicle is in the inventory period, the vehicle can be self-checked every 7 days.

[0035] 1. When it is detected that the battery state is less than or equal to a first charge threshold (e.g. 70%) during a preset number of detections (e.g. 5 times), it is determined that the cause of the battery power loss is improper maintenance-accumulated abnormality;

[0036] 2. When it is detected that the battery state is less than or equal to a first charge threshold (e.g., 70%), and the battery state of charge is not greater than a second charge threshold (e.g., 85%) within a first preset time (e.g., 48 hours) thereafter, it is determined that the cause of the battery power loss is improper maintenance-abnormal charging;

[0037] 3. When no signal of the battery state of charge value is detected within a second preset time (e.g., 30 days), it is determined that the reason for the battery power shortage is improper maintenance-maintenance timeout;

[0038] 4. When it is detected that the battery state is a battery health state value (SOH) less than or equal to a first health threshold (eg, 80%), it is determined that the cause of the battery power loss is improper maintenance - battery aging.

[0039] Second, when the vehicle is in the sold state,

[0040] 1. When it is detected that the vehicle power state is ON or ACC (for example, the SysPowerMod signal is 1 or 2) and the engine state of the vehicle is in the off state (for example, the EngState signal is 0), the change in the battery state of charge value of the battery state is greater than or equal to a third charge threshold value (for example, 20%), for example, the change in the last two battery state of charge values ​​detected before the vehicle power state or engine state changes is greater than or equal to 20%, it is determined that the cause of the battery power loss is abnormal battery consumption-rapid decline;

[0041] 2. When it is detected that the vehicle power state is ON or ACC (for example, the SysPowerMod signal is 1 or 2) and the engine state of the vehicle is off (for example, the EngState signal is 0), and the battery charge state value of the battery state is less than a fourth charge threshold value (for example, 50%), it is determined that the cause of the battery power loss is abnormal battery consumption - low power.

[0042] Third, in the state of the vehicle throughout its life cycle,

[0043] 1. When the vehicle power state of the vehicle is detected to be OFF (for example, the SysPowerMod signal is 0) and it continues for a third preset time (for example, 1 hour), or the number of times the vehicle power state of the vehicle is detected to be OFF (for example, the SysPowerMod signal is 0) is greater than the preset number of times (for example, 15 times) within the fourth preset time (for example, 7 days) and each time it continues for more than or equal to the fifth preset time (for example, 0.1 hours), it is determined that the reason for the battery power shortage is abnormal awakening of the vehicle. In addition, the status can be distinguished according to the vehicle circulation process, such as "abnormal awakening of the whole vehicle-warehousing", "abnormal awakening of the whole vehicle-logistics", "abnormal awakening of the whole vehicle-dealer" and "abnormal awakening of the whole vehicle-after-sales".

[0044] Fourth, when the vehicle is in the state of being a display vehicle,

[0045] 1. When it is detected that the battery state is less than or equal to a fourth charge threshold (e.g., 50%), and the battery state of charge is not greater than a first charge threshold (e.g., 70%) within a sixth preset time (e.g., 24 hours) thereafter, it is determined that the cause of the battery power loss is improper maintenance - abnormality of the exhibition vehicle.

[0046] Fifth, when the vehicle is in the sold state,

[0047] 1. When it is detected that the last battery status before the vehicle is dormant is that the battery state of charge value is within a preset range, and thereafter no signal of the battery state of charge value is detected for a period greater than or equal to a seventh preset time or the engine status of the vehicle is all in an off state, it is determined that the reason for the battery being low is that it is left unused for a long time.

[0048] In this regard, the above preset range and the seventh preset time may be multiple data. According to the different preset ranges and the seventh preset time, different degrees of long-term placement may be confirmed, for example:

[0049] If the last battery state detected before the vehicle goes into hibernation is greater than or equal to 90% and no battery state of charge signal is detected for greater than or equal to 40 days thereafter or the vehicle's engine state is always off (EngState signal has never been equal to 2), the vehicle is marked as "long-term storage - very long";

[0050] If the last battery state detected before the vehicle goes into hibernation is less than 90% and greater than or equal to 70%, and no battery state of charge signal is detected for greater than or equal to 30 days thereafter or the engine state of the vehicle is always off (EngState signal has never been equal to 2), the vehicle is marked as "long-term storage - long";

[0051] If the last battery state detected before the vehicle goes into sleep mode is less than 70% of the battery state of charge, and no battery state of charge signal is detected for 15 days or more, or the engine state of the vehicle is off (EngState signal has never been equal to 2), the vehicle is marked as "long-term storage - long";

[0052] In addition, when no signal of the battery state of charge value is detected for more than 15 days or the engine state of the vehicle is in the off state (the EngState signal has never been equal to 2), the signal of the battery state of charge value is detected or the engine state of the vehicle changes, and when the difference between the battery state of charge value detected at this time and the battery state of charge value detected last time is greater than or equal to 20%, the vehicle is marked as "long-term storage - reduced power".

[0053] Sixth, when the vehicle is in the sold state,

[0054] 1. When it is detected that the mileage of the vehicle is less than the first preset mileage (for example, 500 kilometers, VehTotDistance signal is less than 500) within an eighth preset time (for example, three months), and the single driving time is less than a ninth preset time (for example, 1 hour), it is determined that the cause of the battery depletion is short-mileage failure.

[0055] Seventh, when the vehicle is in the sold state,

[0056] 1. When it is detected that the vehicle power state is ON (for example, the SysPowerMod signal is 2), the engine state of the vehicle is in the starting state (for example, the EngState signal is 2), and the power generation state of the vehicle is a power generation failure (for example, the GeneratorWrnLampSts signal is 1), when the battery state of charge value is less than the fourth charge threshold value (for example, 50%), it is determined that the cause of the battery power loss is a power system failure.

[0057] The data platform can store all SOC and SOH data from the vehicle inventory period to the exhibition period, from the exhibition period to the sold period, and the entire sold period, and form SOC and SOH curves, such as Figure 2 shown.

[0058] Figure 3 FIG. 1 is a structural block diagram of a battery low-power monitoring device for a vehicle provided by an embodiment of the present invention. Figure 3 As shown, the device includes: a detection unit 1 and a processing unit 2, wherein the detection unit 1 is used to detect the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage; the processing unit 2 is used to determine the cause of the battery depletion based on the status of the vehicle and according to one or more of the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage.

[0059] Furthermore, the detection unit 1 includes: a battery sensor, a body controller, an engine control module and an instrument.

[0060] The embodiment of the vehicle battery low power monitoring device described above is similar to the embodiment of the vehicle battery low power monitoring method described above, and will not be repeated here.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for monitoring battery power shortage of a vehicle, characterized in that: The method includes: Detecting the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage; Based on the state of the vehicle, the cause of the battery power shortage is determined according to one or more of the battery state, the vehicle power supply state, the vehicle engine state, the vehicle power generation state and the vehicle mileage, Wherein, during the period when the state of the vehicle is determined to be sold, when it is detected that the mileage of the vehicle is less than the first preset mileage within the eighth preset time, and the single driving time is less than the ninth preset time, it is determined that the reason for the battery power loss is short mileage failure; or During the period when it is determined that the status of the vehicle is sold, when it is detected that the vehicle power status is ON, the engine status of the vehicle is in the starting state, and the power generation status of the vehicle is that there is a power generation failure, when the battery status is that the battery charge status value is less than the fourth charge threshold, it is determined that the cause of the battery power loss is a power system failure.

2. The method for monitoring battery power failure of a vehicle according to claim 1, characterized in that: The determining, based on the state of the vehicle and according to one or more of the state of the battery, the state of the vehicle power supply, the state of the engine of the vehicle, the power generation state of the vehicle, and the mileage of the vehicle, of the cause of the battery power shortage includes: During the determination that the vehicle is in inventory, When it is detected that the battery state is less than or equal to the first charge threshold value in the preset number of detections, it is determined that the reason for the battery power loss is improper maintenance-accumulated abnormality; When it is detected that the battery state is that the battery state of charge value is less than or equal to the first charge threshold, and the battery state of charge value is not greater than the second charge threshold within a first preset time thereafter, determining that the cause of the battery power loss is improper maintenance-abnormal charging; When no signal of the battery state of charge value is detected within the second preset time, it is determined that the reason for the battery power shortage is improper maintenance-maintenance timeout; When it is detected that the battery state is a battery health state value that is less than or equal to a first health threshold, it is determined that the reason for the battery power loss is improper maintenance-battery aging.

3. The method for monitoring battery power failure of a vehicle according to claim 1, characterized in that: The determining, based on the state of the vehicle and according to one or more of the state of the battery, the state of the vehicle power supply, the state of the engine of the vehicle, the power generation state of the vehicle, and the mileage of the vehicle, of the cause of the battery power shortage includes: During the determination that the status of the vehicle is sold, When it is detected that the vehicle power state is ON or ACC and the engine state of the vehicle is off, and the change in the battery state of charge value of the battery state is greater than or equal to a third charge threshold, determining that the cause of the battery power loss is abnormal battery consumption-rapid decline; When it is detected that the vehicle power state is ON or ACC and the engine state of the vehicle is off, and the battery charge state value of the battery state is less than a fourth charge threshold, it is determined that the cause of the battery power loss is abnormal battery consumption - low power.

4. The method for monitoring battery power shortage of a vehicle according to claim 1, characterized in that: The determining, based on the state of the vehicle and according to one or more of the state of the battery, the state of the vehicle power supply, the state of the engine of the vehicle, the power generation state of the vehicle, and the mileage of the vehicle, of the cause of the battery power shortage includes: After determining that the vehicle is in a full life cycle state, When it is detected that the vehicle power state is OFF and continues for a third preset time, or when the number of times the vehicle power state is OFF is detected within the fourth preset time is greater than the preset number and each time continues for greater than or equal to the fifth preset time, it is determined that the cause of the battery depletion is abnormal wake-up of the vehicle.

5. The method for monitoring battery power shortage of a vehicle according to claim 1, characterized in that: The determining, based on the state of the vehicle and according to one or more of the state of the battery, the state of the vehicle power supply, the state of the engine of the vehicle, the power generation state of the vehicle, and the mileage of the vehicle, of the cause of the battery power shortage includes: During the period of determining that the vehicle is in a display vehicle state, When it is detected that the battery state is less than or equal to the fourth charge threshold, and the battery state of charge is not greater than the first charge threshold within a sixth preset time thereafter, it is determined that the cause of the battery power loss is improper maintenance-exhibition vehicle abnormality.

6. The method for monitoring battery power failure of a vehicle according to claim 1, characterized in that: The determining, based on the state of the vehicle and according to one or more of the state of the battery, the state of the vehicle power supply, the state of the engine of the vehicle, the power generation state of the vehicle, and the mileage of the vehicle, of the cause of the battery power shortage includes: During the determination that the vehicle is in a sold state, When it is detected that the last battery status before the vehicle is hibernated is that the battery charge state value is within a preset range, and no signal of the battery charge state value is detected within a seventh preset time or more, or the engine status of the vehicle is all in the off state, it is determined that the reason for the battery power loss is that it is left unused for a long time.

7. A battery low power monitoring device for a vehicle, which executes the battery low power monitoring method for a vehicle as claimed in any one of claims 1 to 6, characterized in that: The device includes: A detection unit and a processing unit, wherein: The detection unit is used to detect the battery status, the vehicle power status, the vehicle engine status, the vehicle power generation status and the vehicle mileage; The processing unit is used to determine the cause of the battery depletion based on the state of the vehicle, according to one or more of the battery state, the vehicle power state, the vehicle engine state, the vehicle power generation state and the vehicle mileage.

8. The battery low power monitoring device for a vehicle according to claim 7, characterized in that: The detection unit comprises: Battery sensors, body controller, engine control module and instrumentation.

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