CN114347861B - Cooling fan starting time determining method and cooling fan starting method - Google Patents
Cooling fan starting time determining method and cooling fan starting method Download PDFInfo
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- CN114347861B CN114347861B CN202111667724.8A CN202111667724A CN114347861B CN 114347861 B CN114347861 B CN 114347861B CN 202111667724 A CN202111667724 A CN 202111667724A CN 114347861 B CN114347861 B CN 114347861B
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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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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The embodiment of the invention discloses a cooling fan starting time determining method and a cooling fan starting method, wherein the starting time determining method comprises the steps of obtaining temperature data of a power battery at a first time, wherein the temperature data comprise a temperature change rate and a driving initial time temperature value; determining the rising time of the power battery from the current temperature value to the preset optimal working temperature upper limit value based on the temperature data and the preset optimal working temperature upper limit value; and determining the starting moment of the cooling fan based on the rising time and the preset cooling fan cooling time. The cooling fan cooling device solves the technical problem that the cooling fan cannot be started in advance to cool the power battery to be overheated in advance in the prior art, achieves the purpose that the cooling fan can be started in advance to cool the power battery, and achieves the technical effects of reducing the service life attenuation speed of the cooling fan and prolonging the service life of the power battery.
Description
Technical Field
The embodiment of the invention relates to the technical field of data processing, in particular to a cooling fan starting moment determining method and a cooling fan starting method.
Background
At present, when a cooling fan is started up in an air-cooled battery system, the highest temperature of the battery is monitored in real time, and when the highest temperature exceeds a preset fan starting temperature boundary, the cooling fan is controlled to be started up for cooling.
The method can not cool down the battery in time, so that the battery can not be in the optimal working temperature range, and further the battery performance can not be ensured to work under optimal condition; the battery can work for too long in a high-temperature environment, and the service life of the battery can be influenced to a certain extent.
Disclosure of Invention
The embodiment of the invention provides a cooling fan starting time determining method and a cooling fan starting method, which solve the technical problem that a cooling fan cannot be started in advance to cool a power battery to be overheated in advance in the prior art.
The embodiment of the invention provides a method for determining the starting time of a cooling fan, which comprises the following steps:
acquiring temperature data of the power battery at a first moment, wherein the temperature data comprises a temperature change rate and a temperature value at an initial moment of driving;
determining the rising time of the power battery from the current temperature value to the preset optimal working temperature upper limit value based on the temperature data and the preset optimal working temperature upper limit value;
and determining the starting moment of the cooling fan based on the rising time and the preset cooling fan cooling time.
Further, the determining the starting time of the cooling fan based on the rising time and the preset cooling fan cooling time includes:
comparing the rising time with the preset cooling fan cooling time;
if the rising time is greater than the preset cooling fan cooling time, determining a first wind speed and a first wind quantity of the cooling fan based on the preset cooling fan cooling time, and determining the starting time of the cooling fan.
Further, after determining the starting time of the cooling fan, the method further includes:
after the cooling fan is started for a preset time, judging whether the cooling amplitude of the power battery reaches a preset cooling amplitude or not;
if not, the current temperature data of the power battery is acquired again, the corresponding rising time is determined again based on the current temperature data, and further, the second wind speed and the second wind quantity of the cooling fan are determined based on the determined rising time, wherein the second wind speed is larger than the first wind speed, and the second wind quantity is larger than the second wind quantity.
Further, after determining the starting time of the cooling fan, the method further includes:
and integrating the starting time of the cooling fan and the running condition of the driving equipment at the first time into cooling fan starting time information, and uploading the cooling fan starting time information to a cloud server side.
The embodiment of the invention also provides a cooling fan starting method, which is applied to driving equipment, wherein the driving equipment stores cooling fan starting time information determined by the cooling fan starting time determining method in any embodiment in advance, and the cooling fan starting method comprises the following steps:
acquiring the current driving condition of the driving equipment, wherein the driving condition at least comprises one of the following: current road condition information, current position information and current environment information;
inquiring the pre-stored cooling fan starting time information of the driving equipment according to the driving working condition, and determining the starting time of the cooling fan;
and starting the cooling fan based on the determined starting time of the cooling fan.
Further, the cooling fan starting method further comprises the following steps:
acquiring cooling fan starting time information of a cloud server side at each preset interval time;
and updating the cooling fan start time information pre-stored in the driving equipment by using the cooling fan start time information of the cloud server.
Further, the updating the cooling fan start timing information pre-stored in the driving device by using the cooling fan start timing information of the cloud server side includes:
comparing the cooling fan start time information on the driving equipment with the cooling fan start time information of the cloud server;
if the cooling time of the power battery is shorter due to the start time of the cooling fan start time information of the cloud server under the same driving working condition, the cooling fan start time information of the driving equipment is replaced by the cooling fan start time information of the cloud server under the driving working condition.
The embodiment of the invention also provides a device for determining the starting time of the cooling fan, which comprises the following steps:
the data acquisition unit is used for acquiring temperature data of the power battery at a first moment, wherein the temperature data comprise a temperature change rate and a driving initial moment temperature value;
a time determining unit for determining a rising time of the power battery from a current temperature value to a preset optimal operation temperature upper limit value based on the temperature data and the preset optimal operation temperature upper limit value;
and the starting time determining unit is used for determining the starting time of the cooling fan based on the rising time and the preset cooling fan cooling time.
The embodiment of the invention also provides a cooling fan opening device, which comprises:
the driving equipment comprises a working condition acquisition unit, a control unit and a control unit, wherein the working condition acquisition unit is used for acquiring the current driving working condition of the driving equipment, and the driving working condition at least comprises one of the following: current road condition information, current position information and current environment information;
the inquiring unit is used for inquiring the pre-stored cooling fan starting time information of the driving equipment according to the driving working condition and determining the starting time of the cooling fan;
and the control unit is used for starting the cooling fan based on the determined starting time of the cooling fan.
The embodiment of the invention also provides driving equipment, which comprises the cooling fan starting device in any embodiment.
The embodiment of the invention discloses a cooling fan starting time determining method and a cooling fan starting method, wherein the starting time determining method comprises the steps of obtaining temperature data of a power battery at a first time, wherein the temperature data comprise a temperature change rate and a driving initial time temperature value; determining the rising time of the power battery from the current temperature value to the preset optimal working temperature upper limit value based on the temperature data and the preset optimal working temperature upper limit value; and determining the starting moment of the cooling fan based on the rising time and the preset cooling fan cooling time. According to the method and the device, the starting time of the cooling fan which needs to be started in advance is determined according to the rising time of the power battery from the current temperature to the preset optimal working temperature upper limit value, the technical problem that the cooling fan cannot be started in advance to cool the power battery which is about to be overheated in the prior art is solved, the purpose that the cooling fan can be started in advance to cool the power battery is achieved, and the technical effects of reducing the service life attenuation speed of the cooling fan and prolonging the service life of the power battery are achieved.
Drawings
FIG. 1 is a flowchart of a method for determining a start time of a cooling fan according to an embodiment of the present invention;
FIG. 2 is a flowchart of another method for determining a start time of a cooling fan according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for turning on a cooling fan according to an embodiment of the present invention;
FIG. 4 is a flowchart of another method for turning on a cooling fan according to an embodiment of the present invention;
FIG. 5 is a flowchart of a cooling fan on method according to an embodiment of the present invention;
fig. 6 is a block diagram of a cooling fan on time determining apparatus according to an embodiment of the present invention;
fig. 7 is a block diagram of a cooling fan opening device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and in the drawings are used for distinguishing between different objects and not for limiting a particular order. The following embodiments of the present invention may be implemented individually or in combination with each other, and the embodiments of the present invention are not limited thereto.
Fig. 1 is a flowchart of a method for determining a start time of a cooling fan according to an embodiment of the present invention.
As shown in fig. 1, the method for determining the starting time of the cooling fan specifically includes the following steps:
s101, acquiring temperature data of the power battery at a first moment, wherein the temperature data comprise a temperature change rate and a temperature value at an initial moment of driving.
Specifically, in driving equipment driving process, BMS (Battery Management System ) can acquire power battery's temperature value as required, and this temperature value includes driving initial time temperature value, still includes the temperature value of driving in-process every certain time collection, and BMS can also confirm power battery's temperature change rate at the first moment based on the temperature value that acquires.
S102, determining the rising time of the power battery from the current temperature value to the preset optimal working temperature upper limit value based on the temperature data and the preset optimal working temperature upper limit value.
Specifically, the power battery has an optimal working temperature range in the working process, wherein the upper limit value of the optimal working temperature range is a preset upper limit value of the optimal working temperature. The optimal working temperature range is preset according to the characteristics of the battery cells in the power battery. Generally, the range of the preset optimum operating temperature upper limit is 25℃to 45 ℃.
The performance of the power battery can be tested in advance according to the requirement, the rising time of different power batteries in different temperature data and different preset optimal working temperature upper limit values is determined according to the temperature data and the preset optimal working temperature upper limit values in the test process, the rising time is the rising time of the power battery from the current temperature value to the preset optimal working temperature upper limit value, then the temperature data, the preset optimal working temperature upper limit value and the rising time corresponding to the temperature data, the preset optimal working temperature upper limit value and the preset optimal working temperature upper limit value are integrated into a battery cell performance parameter table, and the battery cell performance parameter table is stored for standby. Therefore, after the temperature data of the power battery at the first moment and the preset optimal working temperature upper limit value are obtained, the battery core performance parameter table can be inquired according to the temperature data and the preset optimal working temperature upper limit value, so that the rising time of the power battery from the current temperature value at the first moment to the preset optimal working temperature upper limit value can be obtained.
S103, determining the starting moment of the cooling fan based on the rising time and the preset cooling fan cooling time.
Specifically, after determining the rising time of the power battery from the current temperature value at the first moment to the preset optimal working temperature upper limit value, comparing the rising time with the preset cooling fan cooling time, and judging at which moment the cooling fan is started, so that the power battery can reach the optimal temperature value in the optimal working temperature range in the shortest time without continuously rising the temperature to the preset optimal working temperature upper limit value, and further exceeding the upper limit value, thereby influencing the service life of the power battery.
Optionally, S103, determining the start time of the cooling fan based on the rising time and the preset cooling fan cooling time includes: comparing the rising time with the preset cooling time of the cooling fan; if the rising time is greater than the preset cooling fan cooling time, determining a first wind speed and a first wind quantity of the cooling fan based on the preset cooling fan cooling time, and determining the starting time of the cooling fan.
Specifically, the cooling fan has different gear positions, and each gear position corresponds to a corresponding wind speed and wind quantity. The preset cooling fan cooling time is the duration that the cooling fan obtained by the experimental test can reduce the temperature of the power battery by a plurality of degrees under different wind speeds and wind volumes in advance, therefore, the preset cooling fan cooling time is a set of data, namely, one preset cooling fan cooling time corresponds to one wind speed value and one wind volume value, the preset cooling fan cooling time obtained by the experimental test, the corresponding wind speeds and wind volumes are integrated into one cooling time table, and after the rising time is obtained, the cooling time table is queried, so that the preset cooling fan cooling time can be obtained.
The specific table look-up method can be that the rising time of the power battery is compared with the preset cooling fan cooling time in the table, if the rising time is larger than the preset cooling fan cooling time, the fan can reduce the temperature of the power battery to an optimal temperature value in an optimal working range before the power battery reaches a preset optimal working temperature upper limit value, and therefore the cooling time of the cooling fan to reduce the temperature of the power battery to the optimal temperature value in the optimal working temperature range can be determined. The preset cooling fan cooling time corresponds to the corresponding wind speed and wind quantity of the cooling fan, namely, the corresponding first wind speed and first wind quantity can be determined based on the preset cooling fan cooling time, meanwhile, the cooling time can be determined by making a difference between the rising time and the preset cooling fan cooling time, the starting time of the cooling fan is further determined, namely, the cooling fan is started from the time in advance to cool the power battery, and the power battery can be prevented from continuously heating up to reach the upper limit value of the preset optimal working temperature and further exceeding the upper limit value.
For example, assuming that the rising time is 65 minutes, the preset cooling fan cooling time satisfying less than the rising time is 45 minutes after the corresponding lookup table, the rising time and the preset cooling fan cooling time are differed by 20 minutes, the cooling fan is started to cool the power battery after 20 minutes from the moment, and the gear of the cooling fan is set to be the wind speed and the wind volume corresponding to the preset cooling fan cooling time of 45 minutes.
Optionally, after determining the start time of the cooling fan in step S103, the method for determining the start time of the cooling fan further includes: after the cooling fan is started for a preset time, judging whether the cooling amplitude of the power battery reaches the preset cooling amplitude; if not, the current temperature data of the power battery is acquired again, the corresponding rising time is determined again based on the current temperature data, and then the second wind speed and the second wind quantity of the cooling fan are determined based on the determined rising time, wherein the second wind speed is larger than the first wind speed, and the second wind quantity is larger than the second wind quantity.
Specifically, in order to ensure that cooling of the power battery can be effectively achieved, after the cooling fan is turned on for a preset period of time, for example, after the cooling fan is turned on for half an hour, temperature data of the power battery needs to be acquired again, whether the cooling range of the power battery reaches the preset cooling range or not is judged, that is, whether the cooling requirement can be met by detecting whether the cooling fan uses a gear of the first wind speed and the first wind quantity as the cooling of the power battery or not, the preset cooling range can be obtained according to the corresponding preset cooling fan cooling time, that is, the temperature of the power battery can be reduced by a plurality of degrees in the preset cooling fan cooling time, and then the believed preset cooling range can be obtained.
If the cooling amplitude does not reach the preset cooling amplitude, the current cooling fan is indicated to cool the power battery by taking the gear of the first air speed and the first air quantity as the power battery, the steps S101-S102 are required to be re-executed, the new preset cooling fan cooling time is determined according to the re-determined rising time table, and the second air speed and the second air quantity of the cooling fan are further determined, so that the cooling fan can timely change the gear to cool the power battery.
In a word, by the method for determining the starting time of the cooling fan, the wind speed of the cooling fan can be started and regulated in advance, and the power battery is cooled in time, so that the power battery can be in an optimal working temperature range, the performance of the power battery is kept in an optimal interval, a user is guaranteed to have good driving experience to a certain extent, and the service life of the power battery is prolonged; on the other hand, the cooling fan is started in advance to cool the power battery, so that the power battery is in a pre-optimal working temperature range, the cooling fan does not need to be controlled to be started to the maximum wind speed, and the service life decay speed of the cooling fan is reduced.
On the basis of the above technical solutions, fig. 2 is a flowchart of another method for determining a start time of a cooling fan according to an embodiment of the present invention, as shown in fig. 2, in S103, after determining the start time of the cooling fan, the method for determining the start time of the cooling fan further includes:
s201, integrating the starting time of the cooling fan and the running condition of the driving equipment at the first time into cooling fan starting time information, and uploading the cooling fan starting time information to the cloud server.
Specifically, in the driving process of the driving equipment, the driving working condition at the first moment can be obtained in real time, the driving working condition specifically comprises driving road condition information of the driving equipment, GPS positioning information, driving environment information and the like, and the driving road condition information specifically comprises driving conditions of the driving equipment in ascending, descending and flat road or driving conditions of acceleration, deceleration and the like; the GPS positioning information can accurately indicate the current position of the driving equipment; the environmental information includes geographical environmental information such as mountain roads, urban areas, suburban areas, etc., and may also include climate environmental information such as weather conditions, etc.
After determining the starting time of the cooling fan and acquiring the driving working condition under the same time (i.e. the first time), the starting time information of the cooling fan can be integrated into the starting time information of the cooling fan, and the starting time information of the cooling fan is uploaded to the cloud server side, so that other driving equipment can share the starting time information of the cooling fan.
Optionally, the cooling fan on time information is uploaded to the cloud server through a wireless communication mode.
Specifically, the cooling fan start time information may be uploaded to the cloud server through a wireless communication module such as a Zigbee module, a bluetooth module, a WiFi module, or may be uploaded to the cloud server through another module capable of implementing wireless communication.
Fig. 3 is a flowchart of a method for turning on a cooling fan according to an embodiment of the present invention. The cooling fan start-up method is applied to driving equipment, and the driving equipment stores cooling fan start-up timing information determined by the cooling fan start-up timing determination method according to any one of the embodiments.
As shown in fig. 3, the cooling fan turning-on method specifically includes the following steps:
s301, acquiring the current driving condition of the driving equipment, wherein the driving condition at least comprises one of the following: current road condition information, current location information, and current environment information.
Specifically, during the driving process of the driving device, the ECU (Electronic Control Unit ) can acquire the current driving condition of the driving device in real time, where the driving condition at least includes current road condition information, current position information, current environment information, and the like of the driving device, and specifically, the current road condition information is used to represent the current driving condition information of the driving device, such as uphill, downhill, and flat road, or the current driving condition information of the driving device, such as acceleration and deceleration; the current position information refers to the current position of the driving equipment positioned by the GPS positioning device; the current environmental information may include geographical environmental information such as mountain roads, urban areas, suburban areas, etc., and may also include climate environmental information such as weather conditions, etc.
S302, inquiring the pre-stored cooling fan starting time information of the driving equipment according to the driving working condition, and determining the starting time of the cooling fan.
Specifically, the cooling fan start timing information determined by the cooling fan start timing determining method in the above embodiment may be stored in the driving device in advance, and after the driving device acquires the driving working condition in real time during the driving process, the cooling fan start timing information may be queried according to the acquired driving working condition to determine the start timing of the cooling fan under the same working condition.
S303, starting the cooling fan based on the determined starting moment of the cooling fan.
Specifically, after inquiring the starting time of the cooling fan under the same working condition, the ECU can control the cooling fan to be started at the corresponding time to cool the power battery.
On the basis of the above technical solutions, fig. 4 is a flowchart of another method for turning on a cooling fan according to an embodiment of the present invention, as shown in fig. 4, after S303, the method for turning on a cooling fan further includes:
s401, obtaining cooling fan starting time information of the cloud server side every preset time.
S402, updating cooling fan start time information pre-stored in the driving equipment by using cooling fan start time information of the cloud server side.
Specifically, in the driving process, after the driving device determines the starting time of the cooling fan according to different driving conditions, the driving device uploads the starting time of the cooling fan to the cloud server side, so that the cooling fan starting time information stored in the cloud server side is in unscheduled updating, and therefore, in order to ensure that the cooling fan starting time information stored in the driving device can be in the latest state, the ECU acquires the cooling fan starting time information stored in the cloud server side every interval preset time length and is used for updating the cooling fan starting time information stored in the driving device.
In the embodiment of the invention, the cooling fan starting time information stored in the driving equipment is updated in a timing updating mode, so that the stability and reliability of the cooling fan starting are further improved.
On the basis of the above technical solutions, fig. 5 is a flowchart of another method for turning on a cooling fan according to an embodiment of the present invention, as shown in fig. 5, where S402 specifically includes the following steps:
s501, comparing the cooling fan start time information on the driving equipment with the cooling fan start time information of the cloud server side.
S502, if the cooling time of the power battery is shorter due to the start time of the cooling fan start time information of the cloud server under the same driving working condition, the cooling fan start time information of the driving equipment is replaced by the cooling fan start time information of the cloud server under the driving working condition.
Specifically, after the ECU obtains the cooling fan start timing information of the cloud server, comparing the cooling fan start timing information stored on the driving device with the cooling fan start timing information of the cloud server, and judging that under the same driving condition, the time length that the corresponding stored cooling fan start time can enable the temperature of the power battery to be reduced to the optimal temperature value in the optimal working temperature range is shorter, if the cloud server side stored start time enables the cooling time to be shorter, replacing the cooling fan start timing information of the driving device under the corresponding driving condition with the cooling fan start timing information of the driving condition stored on the cloud server side, otherwise, retaining the cooling fan start timing information of the driving device under the corresponding driving condition originally stored on the driving device, and not updating.
It should be noted that, in order to ensure that the cooling fan on time information stored in the driving device can be in the latest state, the cooling fan on time information stored in the driving device in advance can be compared with the on time of the cooling fan calculated in real time by the BMS in the driving device, and if the on time of the cooling fan calculated in real time by the BMS can enable the cooling time of the power battery to be shorter, the cooling fan on time information stored in the driving device is updated by using the on time of the cooling fan calculated by the BMS.
Fig. 6 is a block diagram of a cooling fan on time determining apparatus according to an embodiment of the present invention, and as shown in fig. 6, the cooling fan on time determining apparatus includes:
a data obtaining unit 61, configured to obtain temperature data of the power battery at a first moment, where the temperature data includes a temperature change rate and a temperature value at an initial moment of driving;
a time determining unit 62 for determining a rising time of the power battery from the current temperature value to the preset optimum operating temperature upper limit value based on the temperature data and the preset optimum operating temperature upper limit value;
the start time determining unit 63 is configured to determine a start time of the cooling fan based on the rising time and a preset cooling fan cooling time.
Alternatively, the opening time determining unit 63 is specifically configured to:
determining a first wind speed, a first wind quantity and a first cooling duration of the cooling fan based on the ratio of the rising time to the preset cooling fan cooling time;
and determining the starting moment of the cooling fan based on the first wind speed, the first wind quantity and the first cooling time.
Optionally, after the start time determining unit 63 determines the start time of the cooling fan, the cooling fan start time determining apparatus further includes:
and the information integration unit is used for integrating the starting time of the cooling fan and the running condition of the driving equipment at the first time into cooling fan starting time information and uploading the cooling fan starting time information to the cloud server side.
Optionally, the information integration unit uploads the cooling fan on time information to the cloud server through wireless communication.
The device provided by the embodiment of the present invention has the same implementation principle and technical effects as those of the foregoing method embodiment, and for the sake of brevity, reference may be made to the corresponding content in the foregoing method embodiment where the device embodiment is not mentioned.
The cooling fan starting time determining device provided by the embodiment of the invention has the same technical characteristics as the cooling fan starting time determining method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
Fig. 7 is a structural diagram of a cooling fan opening device according to an embodiment of the present invention, and as shown in fig. 7, the cooling fan opening device includes:
the working condition obtaining unit 71 is configured to obtain a current driving working condition of the driving device, where the driving working condition at least includes one of the following: current road condition information, current position information and current environment information;
a query unit 72, configured to query the cooling fan start timing information pre-stored in the driving device according to the driving condition, and determine the start time of the cooling fan;
the control unit 73 is configured to turn on the cooling fan based on the determined turn-on timing of the cooling fan.
Optionally, the cooling fan opening device further includes:
the information acquisition unit is used for acquiring cooling fan starting time information of the cloud server side every preset time length;
and the information updating unit is used for updating the cooling fan starting time information pre-stored in the driving equipment by using the cooling fan starting time information of the cloud server side.
Optionally, the information updating unit is specifically configured to:
comparing the cooling fan start time information on the driving equipment with the cooling fan start time information of the cloud server side;
if the cooling time of the power battery is shorter due to the start time of the cooling fan start time information of the cloud server under the same driving working condition, the cooling fan start time information of the driving equipment is replaced by the cooling fan start time information of the cloud server under the driving working condition.
The device provided by the embodiment of the present invention has the same implementation principle and technical effects as those of the foregoing method embodiment, and for the sake of brevity, reference may be made to the corresponding content in the foregoing method embodiment where the device embodiment is not mentioned.
The cooling fan starting device provided by the embodiment of the invention has the same technical characteristics as the cooling fan starting method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
The embodiment of the invention also provides driving equipment, which comprises the cooling fan starting device in any embodiment.
The driving device provided by the embodiment of the present invention includes the cooling fan opening device in the above embodiment, so the driving device provided by the embodiment of the present invention also has the beneficial effects described in the above embodiment, and will not be described herein.
In the description of embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Finally, it should be noted that the foregoing description is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (8)
1. A cooling fan on timing determination method, characterized by comprising:
acquiring temperature data of the power battery at a first moment, wherein the temperature data comprises a temperature change rate and a temperature value at an initial moment of driving;
determining the rising time of the power battery from the current temperature value to the preset optimal working temperature upper limit value based on the temperature data and the preset optimal working temperature upper limit value;
determining the starting time of the cooling fan based on the rising time and the preset cooling fan cooling time;
the determining the starting time of the cooling fan based on the rising time and the preset cooling fan cooling time comprises the following steps:
comparing the rising time with the preset cooling fan cooling time;
if the rising time is greater than the preset cooling fan cooling time, determining a first wind speed and a first wind quantity of the cooling fan based on the preset cooling fan cooling time, and determining the starting time of the cooling fan;
after determining the starting time of the cooling fan, the method further comprises the following steps:
after the cooling fan is started for a preset time, judging whether the cooling amplitude of the power battery reaches a preset cooling amplitude or not;
if not, the current temperature data of the power battery is acquired again, the corresponding rising time is determined again based on the current temperature data, and further, the second wind speed and the second wind volume of the cooling fan are determined based on the determined rising time, wherein the second wind speed is larger than the first wind speed, and the second wind volume is larger than the first wind volume.
2. The cooling fan on-time determination method according to claim 1, further comprising, after determining the on-time of the cooling fan:
and integrating the starting time of the cooling fan and the running condition of the driving equipment at the first time into cooling fan starting time information, and uploading the cooling fan starting time information to a cloud server side.
3. A cooling fan start-up method, characterized in that the cooling fan start-up method is applied to a driving apparatus, which stores in advance cooling fan start-up timing information determined by the cooling fan start-up timing determination method according to any one of the above claims 1 to 2, the cooling fan start-up method comprising:
acquiring the current driving condition of the driving equipment, wherein the driving condition at least comprises one of the following: current road condition information, current position information and current environment information;
inquiring the pre-stored cooling fan starting time information of the driving equipment according to the driving working condition, and determining the starting time of the cooling fan;
and starting the cooling fan based on the determined starting time of the cooling fan.
4. The cooling fan turning-on method according to claim 3, characterized in that the cooling fan turning-on method further comprises:
acquiring cooling fan starting time information of a cloud server side at each preset interval time;
and updating the cooling fan start time information pre-stored in the driving equipment by using the cooling fan start time information of the cloud server.
5. The cooling fan on method according to claim 4, wherein the updating the cooling fan on timing information pre-stored by the driving apparatus using the cooling fan on timing information of the cloud server side includes:
comparing the cooling fan start time information on the driving equipment with the cooling fan start time information of the cloud server;
if the cooling time of the power battery is shorter due to the start time of the cooling fan start time information of the cloud server under the same driving working condition, the cooling fan start time information of the driving equipment is replaced by the cooling fan start time information of the cloud server under the driving working condition.
6. A cooling fan on time determining apparatus for performing the cooling fan on time determining method according to any one of claims 1 to 2, comprising:
the data acquisition unit is used for acquiring temperature data of the power battery at a first moment, wherein the temperature data comprise a temperature change rate and a driving initial moment temperature value;
a time determining unit for determining a rising time of the power battery from a current temperature value to a preset optimal operation temperature upper limit value based on the temperature data and the preset optimal operation temperature upper limit value;
and the starting time determining unit is used for determining the starting time of the cooling fan based on the rising time and the preset cooling fan cooling time.
7. A cooling fan opening device, characterized in that the cooling fan opening device includes the cooling fan opening time determining device according to claim 6, the cooling fan opening device including:
the driving equipment comprises a working condition acquisition unit, a control unit and a control unit, wherein the working condition acquisition unit is used for acquiring the current driving working condition of the driving equipment, and the driving working condition at least comprises one of the following: current road condition information, current position information and current environment information;
the inquiring unit is used for inquiring the pre-stored cooling fan starting time information of the driving equipment according to the driving working condition and determining the starting time of the cooling fan;
and the control unit is used for starting the cooling fan based on the determined starting time of the cooling fan.
8. A driving apparatus characterized in that it comprises the cooling fan starting device according to claim 7.
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