CN109946615A - Method and apparatus for determining the failure of vehicle low-voltage electric system - Google Patents
Method and apparatus for determining the failure of vehicle low-voltage electric system Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The present invention relates to energy of electric automobile administrative skills, in particular to the computer storage medium of the method and apparatus for determining the failure of vehicle low-voltage electric system and implementation this method.In the method for failure for determining vehicle low-voltage electric system according to one aspect of the invention, the vehicle low-voltage electric system includes A-battery, battery detection module and low-voltage electric energy management module, wherein, the battery detection module is configured to detect the status information of the A-battery, the low-voltage electric energy management module is configured to the status information or the A-battery and controls vehicle-mounted DC-DC module to the charging operations of A-battery to its supply voltage, the method comprise the steps of obtain a period in historical data from the vehicle-mounted DC-DC module to A-battery charging operations, wherein, the historical data includes the number of charging operations and the event of triggering charging operations；And determine whether vehicle low-voltage electric system breaks down and the type of failure based on the historical data.
Description
Technical field
The present invention relates to energy of electric automobile administrative skills, in particular to for determining the side of the failure of vehicle low-voltage electric system
Method and device and the computer storage medium for implementing this method.
Background technique
The low-voltage electrical apparatus of electric car is usually powered by vehicle-mounted DC-DC module.But in some cases (such as at vehicle
In suspend mode or car locking state), vehicle-mounted DC-DC module stops working, and the low tension of such as 12V battery etc can be used at this time
Pond powers so that low-voltage electrical apparatus is in running order or standby mode.The low-voltage electrical apparatus of electric car generallys use such as 12V electricity
The A-battery in pond etc or the power supply of vehicle-mounted DC-DC module.With motorized, intelligence and interconnected trend, electric car
Quiescent dissipation dramatically increase.Due to the biggish quiescent dissipation of electric car, A-battery is without the same energy of image of Buddha conventional fuel oil car
The stand-by time for enough supporting several weeks, this requires vehicle-mounted DC-DC modules according to scene, and the electric energy of power battery is converted to low electricity
It presses and charges to A-battery.In addition, the deep discharge of A-battery will affect battery life, to influence car experience and whole
Vehicle quality.
Since the charge and discharge of A-battery are completed by vehicle module, user can not be perceived.In addition, if battery detecting
Module detection failure or A-battery aging then can frequently wake up vehicle-mounted DC-DC module and charge to battery, this will affect
The course continuation mileage of vehicle even results in vehicle and casts anchor.Furthermore the detection error of battery detection module is excessive will also to be caused frequently
Charging.
Summary of the invention
It is an object of the present invention to provide a kind of method and apparatus for determining the failure of vehicle low-voltage electric system,
It can position the event of automobile low-voltage electric system by the analysis of the historical data to charge to A-battery accurately and in time
Barrier.
In the method for failure for determining vehicle low-voltage electric system according to one aspect of the invention, the vehicle
Low-voltage electric system includes A-battery, battery detection module and low-voltage electric energy management module, wherein the battery detection module
Be configured to detect the status information of the A-battery, the low-voltage electric energy management module be configured to the status information or
The A-battery controls vehicle-mounted DC-DC module to the charging operations of A-battery to its supply voltage, and the method includes
The following steps:
The vehicle-mounted DC-DC module is obtained in a period to the historical data of A-battery charging operations, wherein institute
State the event of number and triggering charging operations that historical data includes charging operations；And
Determine whether vehicle low-voltage electric system breaks down and the type of failure based on the historical data.
Preferably, in the above-mentioned methods, the event includes that the battery detection module detects that A-battery SOC is in
The event of reduced levels, the A-battery are in the event of reduced levels and described to low-voltage electric energy management module supply voltage
The event of A-battery electric discharge.
Preferably, in the above-mentioned methods, determine whether to break down as follows and the type of failure:
During the period of time, if the battery detection module detects that A-battery SOC is in the thing of reduced levels
The frequency characteristic value of part is greater than first threshold, it is determined that the A-battery breaks down.
Preferably, in the above-mentioned methods, further comprise the following steps:
Close the low wake-up charge function of SOC of the A-battery；And
The information that the A-battery breaks down is presented to user.
Preferably, in the above-mentioned methods, the low-voltage electric energy management module is configured to when the status information is unavailable,
Charging operations of the vehicle-mounted DC-DC module to A-battery, the method are controlled based on supply voltage of the A-battery to it
Determine whether to break down as follows and the type of failure:
During the period of time, if the A-battery is in lower water to the supply voltage of low-voltage electric energy management module
The frequency characteristic value of flat event is greater than second threshold, it is determined that the battery detection module breaks down.
Preferably, in the above-mentioned methods, determine whether to break down as follows and the type of failure:
During the period of time, if the battery detection module detects the frequency characteristic value of A-battery electric discharge event
Greater than third threshold value, it is determined that broken down by the battery-powered vehicle low-voltage load of the low tension.
Preferably, in the above-mentioned methods, further comprise the following steps:
Read the error code of vehicle；And
The information of the low-voltage load to break down is presented to user.
Preferably, in the above-mentioned methods, described to determine whether vehicle low-voltage electric system occurs based on the historical data
The step of type of failure and failure, executes beyond the clouds.
Device according to the failure for determining vehicle low-voltage electric system of a further aspect of the invention includes storage
Device, processor and it is stored in the computer program that can be run on the memory and on the processor, which is characterized in that
Described program is executed to realize method as described above.
Device according to the failure for determining vehicle low-voltage electric system of a further aspect of the invention includes:
First module, for obtaining vehicle-mounted DC-DC module the going through to A-battery charging operations in a period
History data, wherein the historical data includes the number of charging operations and the event of triggering charging operations；And
Second module, for determining whether vehicle low-voltage electric system breaks down and failure based on the historical data
Type.
According to the computer readable storage medium of a further aspect of the invention, computer program is stored thereon, the program
Method as described above is realized when being executed by processor.
Detailed description of the invention
Above-mentioned and/or other aspects and advantage of the invention will be become by the description of the various aspects below in conjunction with attached drawing
It is more clear and is easier to understand, the same or similar unit, which is adopted, in attached drawing is indicated by the same numeral.Attached drawing includes:
Fig. 1 is the schematic block diagram of vehicle low-voltage electric system.
Fig. 2 is the process according to the method for the failure for determining vehicle low-voltage electric system of one embodiment of the invention
Figure.
Fig. 3 is the device according to the failure for determining vehicle low-voltage electric system of a further embodiment of the present invention
Schematic block diagram.
Fig. 4 is showing according to the device of the failure for determining vehicle low-voltage electric system of another embodiment of the present invention
Meaning block diagram.
Specific embodiment
Referring to which illustrates the attached drawings of illustrative examples of the present invention to more fully illustrate the present invention.But this hair
It is bright to be realized by different form, and be not construed as being only limitted to each embodiment given herein.The above-mentioned each implementation provided
Example is intended to make the disclosure of this paper comprehensively complete, and protection scope of the present invention is more fully communicated to those skilled in the art
Member.
In the present specification, the term of such as "comprising" and " comprising " etc indicates to want in addition to having in specification and right
Asking has in book directly and other than the unit clearly stated and step, technical solution of the present invention be also not excluded for having not by directly or
The situation of the other units clearly stated and step.
The term of such as " first " and " second " etc be not offered as unit the time, space, in terms of sequence
It and is only to make differentiation each unit to be used.
" coupling " should be understood as including the situation that electric flux or electric signal are directly transmitted between two units, Huo Zhejing
Cross the situation that one or more third units transmit electric flux or electric signal indirectly.
Fig. 1 is the schematic block diagram of vehicle low-voltage electric system.
As shown in Figure 1, vehicle low-voltage electric system 10 includes A-battery 110, battery detection module 120, low-voltage electric energy
Management module 130 and vehicle-mounted low-voltage load 140.Indicate that the electric energy between two units transmits in Fig. 1 with heavy line, with fine line
Indicate the transmission of the signal between two units.In the present embodiment, optionally, vehicle low-voltage electric system 10 further includes vehicle connection
Net module 150, but this is not required, car networking module 150 is also possible to the component list outside vehicle low-voltage electric system
Member.
In the embodiment shown in fig. 1, when vehicle is in wake-up states, vehicle-mounted DC-DC module 20 is by power battery
Electric energy is converted to low-voltage and powers to low-voltage electric energy management module 130 and low-voltage load 140.For A-battery 110 configures
Such as when vehicle is in suspend mode or car locking state (vehicle-mounted DC-DC module stops working at this time) to low-voltage load 140 and low
Piezoelectricity energy management module 130 is powered.Battery detection module 120 is configured to the status information of detection A-battery 110 and is supplied to
Low-voltage electric energy management module 130.Status information for example including but be not limited to one or more in following items: A-battery
SOC, the voltage of A-battery, electric current, the SOH of A-battery, A-battery SOC wake up whether enabled, A-battery voltage is called out
Whether whether enabled, A-battery discharge current wake-up of waking up enables and whether the wake-up of A-battery charging current is enabled etc..
Low-voltage electric energy management module 130 is for example through LIN bus or CAN bus and battery detection module 120 and vehicle-mounted DC-DC
Module 20 communicates.After receiving status information from battery detection module 120, low-voltage electric energy management module 130 will be based on state
Information determines corresponding operation strategy.Such as in the not enough power supply of status information indication low-voltage battery (such as according to low tension
The SOC value in pond), low-voltage electric energy management module 130 instructs vehicle-mounted DC-DC module 20 to charge to A-battery 110.
If status information is unavailable, determined based on the supply voltage of A-battery 110 if low-voltage electric energy management module 130
Corresponding operation strategy.Such as when the supply voltage of A-battery 110 is smaller, low-voltage electric energy management module 130 instructs vehicle-mounted
DC-DC module charges to A-battery 110.Preferably, in the present embodiment, low-voltage electric energy management module 130 will be by that will power
Voltage is compared to determine whether supply voltage is smaller with preset threshold value.
In the present embodiment, if low-voltage electric energy management module 130 from battery detection module 120 receive failure message or
If the communication link between person's low-voltage electric energy management module 130 and battery detection module 120 breaks down, state can determine
Information is unavailable.
As shown in Figure 1, car networking module 150 is coupled with low-voltage electric energy management module 130, it is configured as from low-voltage electric energy
Management module 130 receives the historical data of the charging operations of A-battery 110 and transmits the history number of charging operations to cloud 30
According to.In the present embodiment, historical data includes number and the triggering of the charging operations of A-battery 110 in a period of time
The event or reason of charging operations.Preferably, event or reason include battery detection module detect A-battery SOC be in compared with
Low-level event, A-battery is in the event of reduced levels to low-voltage electric energy management module supply voltage and A-battery is put
The event of electricity.
Beyond the clouds 30, can determine whether vehicle low-voltage electric system 10 breaks down and the class of failure based on historical data
Type.For example, in a period of time, if battery detection module detects that A-battery SOC is in the event of reduced levels
Frequency characteristic value is greater than first threshold, it is determined that A-battery breaks down, at this point, cloud 30 can be through low-voltage electric energy management module
130 send the low order for waking up charge function of SOC for closing A-battery to A-battery 110 or directly to A-battery 110,
And the information (such as control on screen and present in user terminal or vehicle) that A-battery breaks down is presented to user.For another example,
In a period of time, if A-battery 110 is in the thing of reduced levels to the supply voltage of low-voltage electric energy management module 130
The frequency characteristic value of part is greater than second threshold, it is determined that battery detection module breaks down, at this point, electricity can be presented to user in cloud
The information (such as being presented on control screen in user terminal or vehicle) that pond detection module breaks down.For another example, in a period
It is interior, if battery detection module 110 detects that the frequency characteristic value of A-battery electric discharge event is greater than third threshold value, it is determined that by
The battery-powered vehicle low-voltage load 140 of low tension breaks down, at this point, the error code of vehicle can be read in cloud 30, (it is usually deposited
Store up in the node of vehicle) and the information of the low-voltage load to break down is presented (such as in user terminal or vehicle to user
It is presented on middle control screen).
The frequency characteristic value of each type of event can there are many modes to determine.Such as can by the unit time such
The number that type event occurs is as frequency characteristic value.It is preferable that frequency characteristic value can be determined as follows:
The initial value (such as value as 0) of the frequency characteristic value f of an event type (hereinafter referred to as event A) is set first.
Then frequency characteristic value f is adjusted according to following rules:
1) within the period that historical data is covered, have in the time interval of the first length (such as 3 hours) every time
Event A occurs, then f is made to increase by 1；
2) within the period that historical data is covered, every time in the time interval of the second length (such as 5 hours) not
There are event A generation and f > 1, then so that f is subtracted 1.
Thus the frequency characteristic value of the event A within the period that historical data is covered is obtained.
It should be pointed out that although the accident analysis based on historical data is completed beyond the clouds in the present embodiment,
It is that the analytic process can also be completed in local or vehicle end.
Fig. 2 is the process according to the method for the failure for determining vehicle low-voltage electric system of one embodiment of the invention
Figure.It is convenient to illustrate, the present embodiment is described by vehicle low-voltage electric system shown in FIG. 1 here.However, it should be understood that
It is that embodiment shown in Fig. 2 is not limited to the device of specific structure.
As shown in Fig. 2, cloud 30 receives the history of the charging operations of A-battery from car networking module 150 in step 210
Data.Under normal conditions, car networking module 150 periodically (such as every 3 days) can send historical data by Xiang Yunduan 30.It is excellent
Selection of land, the A-battery when format of historical data is event type+triggering of time (date)+triggering charging operations
SOC and supply voltage.
Step 220 is subsequently entered, cloud 30 determines various types of within the period that the historical data of upload is covered
The frequency characteristic value of event.In the present embodiment, event includes that battery detection module detects that A-battery SOC is in lower water
Flat event, A-battery are in the event of reduced levels to low-voltage electric energy management module supply voltage and A-battery is discharged
Event.
Step 230 is subsequently entered, various types of frequency characteristic values are compared by cloud 30 with respective threshold value, thus
Determine whether vehicle low-voltage electric system 10 breaks down and the type of failure.
For example, if the frequency characteristic value that A-battery SOC is in the event of reduced levels is greater than first threshold, it is determined that
A-battery breaks down；If A-battery 110 is in reduced levels to the supply voltage of low-voltage electric energy management module 130
The frequency characteristic value of event is greater than second threshold, it is determined that battery detection module breaks down；If battery detection module 110 is examined
The frequency characteristic value for measuring A-battery electric discharge event is greater than third threshold value, it is determined that is born by the battery-powered vehicle low pressure of low tension
140 are carried to break down.
Step 240 is subsequently entered, cloud 30 executes corresponding operation according to the comparison result of step 230.Specifically, working as
When determining that A-battery breaks down, cloud 30 can be through low-voltage electric energy management module 130 to A-battery 110 or directly to low pressure
The low order for waking up charge function of SOC of A-battery is closed in the transmission of battery 110, and A-battery is presented to user, event occurs
The information of barrier；When determining that battery detection module breaks down, cloud 30 can be presented battery detection module to user and break down
Information；When determination is broken down by the battery-powered vehicle low-voltage load 140 of low tension, the failure of vehicle is can be read in cloud 30
Code and the information that the low-voltage load to break down is presented to user.
Fig. 3 is the device according to the failure for determining vehicle low-voltage electric system of a further embodiment of the present invention
Schematic block diagram.
Vehicle control device 30 shown in Fig. 3 includes memory 310, processor 320 and is stored on memory 310 and can
The computer program 330 run on the processor 320, wherein executing computer program 330 may be implemented above by Fig. 2 institute
The method for the failure for determining vehicle low-voltage electric system stated.
Fig. 4 is showing according to the device of the failure for determining vehicle low-voltage electric system of another embodiment of the present invention
Meaning block diagram.
Device 40 shown in Fig. 4 includes the first module 410 and the second module 420.When first module 410 is for obtaining one
Between historical data of the vehicle-mounted DC-DC module to A-battery charging operations in section, wherein the historical data includes charging
The number of operation and the event of triggering charging operations.Second module 420 is used to determine vehicle low tension based on the historical data
Whether gas system breaks down and the type of failure.
It is another aspect of this invention to provide that additionally providing a kind of computer readable storage medium, computer journey is stored thereon
Sequence, can be realized when which is executed by processor above by described in Fig. 2 for being demarcated to automatic emergency brake parameter
Method.
Embodiments and examples set forth herein is provided, to be best described by the reality according to this technology and its specific application
Example is applied, and thus enables those skilled in the art to implement and using the present invention.But those skilled in the art will
Know, provides above description and example only for the purposes of illustrating and illustrating.The description proposed is not intended to cover the present invention
Various aspects or limit the invention to disclosed precise forms.
In view of the above, the scope of the present disclosure is determined by following claims.
Claims (18)
1. a kind of method for determining the failure of vehicle low-voltage electric system, the vehicle low-voltage electric system includes low tension
Pond, battery detection module and low-voltage electric energy management module, wherein the battery detection module is configured to detect the A-battery
Status information, the low-voltage electric energy management module is configured to the power supply of the status information or the A-battery to it
Voltage controls vehicle-mounted DC-DC module to the charging operations of A-battery, which is characterized in that comprises the steps of
The vehicle-mounted DC-DC module is obtained in a period to the historical data of A-battery charging operations, wherein described to go through
History data include the number of charging operations and the event of triggering charging operations；And
Determine whether vehicle low-voltage electric system breaks down and the type of failure based on the historical data.
2. the method for claim 1, wherein the event includes that the battery detection module detects A-battery
SOC is in the event of reduced levels, the A-battery is in the thing of reduced levels to low-voltage electric energy management module supply voltage
The event of part and A-battery electric discharge.
3. method according to claim 2, wherein determine whether to break down as follows and the type of failure:
During the period of time, if the battery detection module detects that A-battery SOC is in the event of reduced levels
Frequency characteristic value is greater than first threshold, it is determined that the A-battery breaks down.
4. method as claimed in claim 3, wherein further comprise the following steps:
Close the low wake-up charge function of SOC of the A-battery；And
The information that the A-battery breaks down is presented to user.
5. method according to claim 2, wherein the low-voltage electric energy management module is configured to can not in the status information
Used time controls vehicle-mounted DC-DC module to the charging operations of A-battery based on supply voltage of the A-battery to it, described
Method determines whether to break down as follows and the type of failure:
During the period of time, if the A-battery is in reduced levels to the supply voltage of low-voltage electric energy management module
The frequency characteristic value of event is greater than second threshold, it is determined that the battery detection module breaks down.
6. method according to claim 2, wherein determine whether to break down as follows and the type of failure:
During the period of time, if the battery detection module detects that the frequency characteristic value of A-battery electric discharge event is greater than
Third threshold value, it is determined that broken down by the battery-powered vehicle low-voltage load of the low tension.
7. method as claimed in claim 6, wherein further comprise the following steps:
Read the error code of vehicle；And
The information of the low-voltage load to break down is presented to user.
8. whether the method for claim 1, wherein described determine vehicle low-voltage electric system based on the historical data
It breaks down and the step of type of failure executes beyond the clouds.
9. it is a kind of for determining the device of the failure of vehicle low-voltage electric system, it includes memory, processor and it is stored in
On the memory and the computer program that can run on the processor, which is characterized in that execute described program to realize
Such as method of any of claims 1-8.
10. it is a kind of for determining the device of the failure of vehicle low-voltage electric system, characterized by comprising:
First module, for obtaining in a period the vehicle-mounted DC-DC module to the history number of A-battery charging operations
According to, wherein the historical data includes the number of charging operations and the event of triggering charging operations；And
Second module, for determining whether vehicle low-voltage electric system breaks down and the class of failure based on the historical data
Type.
11. a kind of computer readable storage medium, stores computer program thereon, which is characterized in that the program is held by processor
Such as method of any of claims 1-8 is realized when row.
12. a kind of vehicle low-voltage electric system, which is characterized in that the system includes
A-battery,
It is electrically connected with A-battery, for detecting the battery detection module of the low battery conditions information；And
Low-voltage electric energy management module obtains battery status information from battery detection module, is set as in the status information
When unavailable, vehicle-mounted DC-DC module is controlled to the charging operations of A-battery based on supply voltage of the A-battery to it,
Determine whether to break down as follows and the type of failure:
During the period of time, if the A-battery is in reduced levels to the supply voltage of low-voltage electric energy management module
The frequency characteristic value of event is greater than second threshold, it is determined that the battery detection module breaks down.
13. vehicle low-voltage electric system as claimed in claim 12, wherein the battery detection module is arranged in A-battery
Negative terminal.
14. vehicle low-voltage electric system as claimed in claim 12, wherein the low-voltage electric energy management module can be set
Che Duan and/or distal end are communicated to connect with low-voltage electric energy management module.
15. vehicle low-voltage electric system as claimed in claim 14 is arranged in the case where vehicle end in electric energy management module, low
Piezoelectricity energy management module can be communicated by LIN or CAN bus with low-voltage electric energy management module, be existed in the setting of electric energy management module
In the case where distal end, the battery detection module is set as communicating by vehicle-carrying communication module with the low-voltage electric energy management module.
16. a kind of control module is used for the low-voltage electric energy management of vehicle, which is characterized in that the control module is used to examine with this
The battery detection module of measuring car low battery conditions information communicates to connect, to obtain the battery status information of the A-battery,
The control module is configured as:
Vehicle-mounted DC-DC module is controlled to A-battery to its supply voltage based on the status information or the A-battery
Charging operations, mode are as follows:
The vehicle-mounted DC-DC module is obtained in a period to the historical data of A-battery charging operations, wherein described to go through
History data include the number of charging operations and the event of triggering charging operations；And
Determine whether vehicle low-voltage electric system breaks down and the type of failure based on the historical data.
17. control module as claimed in claim 16, which be can be set in vehicle end and/or distal end, with low pressure
The communication connection of electric energy management module.
18. control module as claimed in claim 17, be arranged in the case where vehicle end in the control module, by LIN or
CAN bus is communicated with low-voltage electric energy management module, in the case where situation at the far end is arranged in electric energy management module, the battery detecting mould
Block is set as communicating by vehicle-carrying communication module with the low-voltage electric energy management module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017113462888 | 2017-12-15 | ||
| CN201711346288 | 2017-12-15 |
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| CN201810555058.0A Active CN109946615B (en) | 2017-12-15 | 2018-06-01 | Method and device for determining a fault in a vehicle low-voltage electrical system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111175666A (en) * | 2020-01-16 | 2020-05-19 | 郑州宇通客车股份有限公司 | SOH detection method and device |
| CN112721833A (en) * | 2021-01-04 | 2021-04-30 | 宝能(西安)汽车研究院有限公司 | Vehicle low-voltage power supply voltage monitoring method and system, storage medium and vehicle |
| CN114825581A (en) * | 2021-06-30 | 2022-07-29 | 长城汽车股份有限公司 | Vehicle low-voltage power grid exception handling method and device, vehicle and computer readable storage medium |
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| CN111175666B (en) * | 2020-01-16 | 2020-09-29 | 郑州宇通客车股份有限公司 | SOH detection method and device |
| CN112721833A (en) * | 2021-01-04 | 2021-04-30 | 宝能(西安)汽车研究院有限公司 | Vehicle low-voltage power supply voltage monitoring method and system, storage medium and vehicle |
| CN114825581A (en) * | 2021-06-30 | 2022-07-29 | 长城汽车股份有限公司 | Vehicle low-voltage power grid exception handling method and device, vehicle and computer readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM575779U (en) | 2019-03-21 |
| CN109946615B (en) | 2023-06-06 |
| CN209148854U (en) | 2019-07-23 |
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