CN113098366A - Method and device for protecting overheat of strut motor of automobile back door - Google Patents
Method and device for protecting overheat of strut motor of automobile back door Download PDFInfo
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- CN113098366A CN113098366A CN202110455374.2A CN202110455374A CN113098366A CN 113098366 A CN113098366 A CN 113098366A CN 202110455374 A CN202110455374 A CN 202110455374A CN 113098366 A CN113098366 A CN 113098366A
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- motor
- preset
- counting
- count
- strut
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/10—Doors arranged at the vehicle rear
Abstract
The invention discloses an automobile back door stay bar motor overheating protection method and device, and relates to the technical field of motor overheating protection, wherein the method comprises the following steps: counting according to the running time, the downtime and a preset counting rule of the strut motor, and counting the count value in real time; when the count value is greater than a preset first count threshold value, prohibiting the strut motor from continuing to operate until when the count value is less than a preset second count threshold value, allowing the strut motor to operate again; wherein the preset first counting threshold is larger than the preset second counting threshold. According to the invention, the running time and the shutdown time of the stay bar motor are counted, when the count value is increased to the preset first count threshold, the overheat protection is started, the stay bar motor is prohibited from running again, and when the count value is reduced to the preset second count threshold, the stay bar motor is allowed to run again, so that the phenomena that the bimetallic strip contact is frequently opened and closed, the service life is reduced and the reliability of the overheat protection is increased can be avoided.
Description
Technical Field
The invention relates to the technical field of motor overheating protection, in particular to an automobile back door stay bar motor overheating protection method and device.
Background
At present, along with the degree of automation of car is higher and higher, and car back door has realized that electric control opens and closes, is equipped with the door in the car and opens and close the button, and through striking this button, car back door can open and close by oneself, need not the manpower and intervenes. However, the motor is used as a driving element, and the motor inevitably generates heat after long-time running, and if the temperature of the motor is too high, the service life of the motor is influenced, fire disasters can be caused, and safety risks exist. Therefore, the motor is generally provided with an overheat protection mechanism. The motor overheating protection means that when the temperature of the motor exceeds a set temperature, a protection switch is triggered to be turned off, and a power supply is cut off, so that the motor stops running.
In the prior art, motor overheat protection is generally implemented by connecting a bimetallic strip overheat protection switch in series in a circuit for overheat protection, the bimetallic strip overheat protection switch is a commonly used thermosensitive switch and is a recoverable overheat protection switch, and a power supply is switched off when the temperature rises and is switched on when the temperature falls. Specifically, the bimetal overheating protection switch realizes the opening or closing of a contact by means of the deformation of the bimetal caused by the influence of temperature, and has a trigger temperature: when the temperature of the bimetallic strip overheating protection switch is not higher than the trigger temperature, the contact of the bimetallic strip overheating protection switch is normally closed, the circuit of the motor is switched on, and the motor works normally; when the temperature of the bimetallic strip overheating protection switch is higher than the trigger temperature, the contact of the bimetallic strip overheating protection switch is disconnected, the circuit of the motor is cut off, the motor stops running, and the purpose of protecting the motor is achieved. After the motor stops running, the temperature can be gradually reduced, when the temperature of the bimetallic strip overheating protection switch falls below the trigger temperature again, the contact of the bimetallic strip overheating protection switch is closed again, the motor circuit is connected again, and the motor is restored to the normal working state again.
However, the bimetal overheating protection switch relies on the deformation of the bimetal to open or close the contact, and thus the number of uses of the bimetal overheating protection switch is limited. On the one hand, after a certain number of deformations of the bimetal strip have been reached, the deformation of the bimetal strip may fail or the degree of deformation is not sufficient to cause the contacts to open. At this time, when the motor is overloaded and overheated, the bimetallic strip overheating protection switch cannot cut off the circuit in time, and the reliability of overheating protection is reduced. On the other hand, in the opening or closing process of the automobile back door, the safety of protection personnel needs to be considered, and the personnel are prevented from being pinched. Thereby the rotation function demand of preventing clamping in collision has been proposed to the vaulting pole motor. When the gyration was prevented pressing from both sides in the production collision, if at this gyration in-process, if the bimetallic strip overheat protection switch who takes on the vaulting pole motor plays the effect, will open the circuit, the motor will be in off-state, leads to the collision to prevent pressing from both sides the gyration and stops, can not play the effect of preventing pressing from both sides.
Disclosure of Invention
The embodiment of the invention provides an overheat protection method and device for a stay bar motor of an automobile back door, and aims to solve the technical problem that in the related art, after the stay bar motor is subjected to overheat protection for a long time through the disconnection and the closing of a bimetallic strip contact of the stay bar motor, the reliability of the overheat protection is reduced.
In a first aspect, a method for protecting against overheating of a stay bar motor of a back door of an automobile is provided, the method comprising:
counting according to the running time, the downtime and a preset counting rule of the strut motor, and counting the count value in real time;
when the count value is greater than a preset first count threshold value, prohibiting the strut motor from continuing to operate until when the count value is less than a preset second count threshold value, allowing the strut motor to operate again; wherein the preset first counting threshold is larger than the preset second counting threshold.
In some embodiments, the counting according to the run time and the downtime and according to a preset counting rule includes:
when the strut motor operates, counting is increased by one counting unit every time a first time interval passes;
when the strut motor is stopped, the count is decremented by one count unit each time a second time interval elapses.
In some embodiments, before prohibiting the strut motor from continuing to operate when the count value is greater than a preset first count threshold, the method further includes:
judging whether the strut motor is in a collision rotation state, if so, allowing the strut motor to continue to operate, prohibiting the strut motor from continuing to operate until the count value is greater than a preset third count threshold, and allowing the strut motor to operate again until the count value is less than a preset second count threshold; wherein the preset third count threshold is greater than the preset first count threshold.
In some embodiments, after counting according to the running time, the downtime and a preset counting rule of the strut motor and counting the count value in real time, the method further includes:
and when the counting value is not greater than a preset first counting threshold value, allowing the strut motor to continue to operate.
In some embodiments, the allowing the strut motor to continue to operate when the count value is not greater than a preset first count threshold value further comprises:
and judging whether the running and stopping times of the stay bar motor in the preset time exceed the preset times, if so, prohibiting the stay bar motor from continuing running.
In a second aspect, there is provided an automotive back door stay motor overheat protection device, the device comprising:
the counting unit is used for counting according to the running time, the shutdown time and a preset counting rule of the stay bar motor and counting a counting value in real time;
the control unit is used for forbidding the stay bar motor to continue to operate when the counting value is greater than a preset first counting threshold value, and allowing the stay bar motor to operate again when the counting value is less than a preset second counting threshold value; wherein the preset first counting threshold is larger than the preset second counting threshold.
In some embodiments, the counting unit comprises:
the counting increasing module is used for increasing a counting unit every time a first time interval passes when the stay bar motor runs;
and the counting reduction module is used for reducing the counting by one counting unit every time when the second time interval passes when the strut motor is stopped.
In some embodiments, the control unit is further configured to determine whether the strut motor is in a collision rotation state, and if so, allow the strut motor to continue to operate, prohibit the strut motor from continuing to operate until the count value is greater than a preset third count threshold, and allow the strut motor to operate again until the count value is less than a preset second count threshold; wherein the preset third count threshold is greater than the preset first count threshold.
In some embodiments, the control unit is further configured to allow the strut motor to continue to operate when the count value is not greater than a preset first count threshold.
In some embodiments, the control unit is further configured to determine whether the number of times that the strut motor operates and stops within a preset time exceeds a preset number of times, and if so, prohibit the strut motor from continuing to operate.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides an overheat protection method and device for a strut motor of an automobile back door. And after the stay bar motor stops running for a period of time, the counting value is reduced, and when the counting value is reduced to a preset second counting threshold value, the stay bar motor is indicated to have passed through enough time for heat dissipation, the overheat protection is removed, and the stay bar motor is allowed to run again. Therefore, the overheat protection method for the stay bar motor of the automobile back door in the embodiment of the invention can avoid frequent disconnection and closing of the bimetallic strip contact to carry out overheat protection on the stay bar motor, only in a few cases, the disconnection and closing of the bimetallic strip contact can be adopted to carry out overheat protection on the stay bar motor, the bimetallic strip is equivalent to be used as a redundant secondary overheat protection measure, the reliability of overheat protection is increased, and meanwhile, the service life of the overheat protection method is also prolonged due to the fact that the frequency of disconnection and closing of the bimetallic strip contact is reduced.
According to the method and the device for protecting the overheat of the stay bar motor of the back door of the automobile, the safety of personnel needs to be considered in the opening or closing process of the back door of the automobile, and the personnel are prevented from being pinched. When the gyration is prevented pressing from both sides in the production collision, if at this gyration in-process, if triggered the overheat protection function, temporarily can not the cutting off circuit, let the vaulting pole motor continue the gyration operation for a period, can not lead to the collision to prevent pressing from both sides the gyration and suspend, the function is still effective is prevented pressing from both sides in the collision, improves the security of vehicle.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of an overheat protection method for a stay bar motor of a back door of an automobile according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a method for protecting an automotive back door stay bar motor from overheating according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an overheat protection device for a motor of a back door stay bar of an automobile according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of an overheat protection device for a motor of a back door stay of an automobile according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides an overheating protection method for a strut motor of an automobile back door, which can solve the technical problem that in the prior art, after the strut motor is subjected to overheating protection for a long time through the disconnection and the closing of a bimetallic strip contact of the strut motor, the reliability of the overheating protection is reduced.
Referring to fig. 1, an embodiment of the present invention provides a method for protecting an overheat of a strut motor of a back door of an automobile, where the method includes:
counting according to the running time, the downtime and a preset counting rule of the stay bar motor, and counting the count value in real time. Specifically, the counting according to the running time and the downtime and according to a preset counting rule includes: when the strut motor operates, counting is increased by one counting unit every time a first time interval passes; when the strut motor is stopped, the count is decremented by one count unit each time a second time interval elapses.
When the count value is greater than a preset first count threshold value, prohibiting the strut motor from continuing to operate until when the count value is less than a preset second count threshold value, allowing the strut motor to operate again; wherein the preset first counting threshold is larger than the preset second counting threshold.
Further, the method for protecting the overheat of the stay bar motor of the back door of the automobile in the embodiment of the invention is explained as follows:
referring to fig. 2, in the overheat protection scenario, when a user opens or closes the back door of the automobile, the strut motor may continue to operate, the count is increased by one count unit 1 every time a first time interval (which may be a millisecond, a is set according to actual requirements) elapses, the strut motor is prohibited from continuing to operate when the count increases to a preset first count threshold K1(K1 may be 2500), the count is decreased by one count unit 1 every time a second time interval (which may be B milliseconds, B is set according to actual requirements) elapses after the strut motor stops operating, and the strut motor is permitted to operate again when the count decreases to a preset second count threshold K2(K2 may be 0), which is apparent from the overheat protection scenario in fig. 2 that the count starts to increase again, indicating that the strut motor has operated again.
According to the overheat protection method for the stay bar motor of the back door of the automobile, the operation time and the shutdown time of the stay bar motor are counted, the counted value is compared with the preset first counting threshold, when the counted value is increased to the preset first counting threshold, the operation time of the stay bar motor is longer, overheat protection is started, and the stay bar motor is forbidden to continue to operate. And after the stay bar motor stops running for a period of time, the counting value is reduced, and when the counting value is reduced to a preset second counting threshold value, the stay bar motor is indicated to have passed through enough time for heat dissipation, the overheat protection is removed, and the stay bar motor is allowed to run again. Therefore, the overheat protection method for the stay bar motor of the automobile back door in the embodiment of the invention can avoid frequent disconnection and closing of the bimetallic strip contact to carry out overheat protection on the stay bar motor, only in a few cases, the disconnection and closing of the bimetallic strip contact can be adopted to carry out overheat protection on the stay bar motor, the bimetallic strip is equivalent to be used as a redundant secondary overheat protection measure, the reliability of overheat protection is increased, and meanwhile, the service life of the overheat protection method is also prolonged due to the fact that the frequency of disconnection and closing of the bimetallic strip contact is reduced.
As an optional implementation manner, before prohibiting the strut motor from continuing to operate when the count value is greater than a preset first count threshold, the method further includes: judging whether the strut motor is in a collision rotation state, if so, allowing the strut motor to continue to operate, prohibiting the strut motor from continuing to operate until the count value is greater than a preset third count threshold, and allowing the strut motor to operate again until the count value is less than a preset second count threshold; wherein the preset third count threshold is greater than the preset first count threshold.
Specifically, referring to fig. 2, in a collision scenario, when a user opens or closes a back door of an automobile, the strut motor may continue to operate, the count is increased by one count unit 1 every time a first time interval elapses, when the count value increases to a preset first count threshold K1, at this time, if the strut motor is in a collision rotation state, the strut motor is allowed to continue to operate, the count is increased by one count unit 1 every time the first time interval elapses, and when the count value is greater than a preset third count threshold K3, the strut motor is prohibited from continuing to operate, at this time, it is indicated that rotation of the strut motor has ended or a rotation angle requirement has been reached. After the strut motor stops running, the counting is reduced by one counting unit 1 every time when the second time interval passes, and when the counting value is reduced to a preset second counting threshold value K2, the strut motor is allowed to run again at the moment. If it is defined that the back door closing anti-pinch device of the automobile is reversely rotated by 15 degrees at a specified speed v, the operation time C is converted into 15 degrees/v, namely, the number of the back door stay bar motor revolution timer is increased by N15 degrees/v (v x A), and therefore K3 can be K2+ N. According to the automobile back door stay bar motor overheating protection method, the safety of protection personnel is considered in the opening or closing process of the automobile back door, and the personnel are prevented from being pinched and injured. When the gyration is prevented pressing from both sides in the production collision, if at this gyration in-process, if triggered the overheat protection function, temporarily can not the cutting off circuit, let the vaulting pole motor continue the gyration operation for a period, can not lead to the collision to prevent pressing from both sides the gyration and suspend, the function is still effective is prevented pressing from both sides in the collision, improves the security of vehicle.
As an optional implementation manner, the method for protecting overheat of the stay bar motor of the back door of the automobile in the embodiment of the present invention further includes: and when the counting value is not greater than a preset first counting threshold value, allowing the strut motor to continue to operate. Specifically, referring to fig. 2, in a normal operation scenario, as long as the count value is not greater than the preset first count threshold K1, which indicates that the operation time of the strut motor is always within a suitable range, the strut motor generally does not overheat, and the strut motor may be allowed to continue to operate.
As an optional implementation manner, in the method for protecting overheat of a stay bar motor of a back door of an automobile in an embodiment of the present invention, when the count value is not greater than a preset first count threshold, the stay bar motor is allowed to continue to operate, and the method further includes: and judging whether the running and stopping times of the stay bar motor in the preset time exceed the preset times, if so, prohibiting the stay bar motor from continuing running. Specifically, as shown in fig. 2, in the frequent operation scenario, although the count value is not greater than the preset first count threshold K1, it is considered that frequent operation and stop of the strut motor are also disadvantageous to the strut motor, and therefore, if the number of times of operation and stop of the strut motor within the preset time exceeds the preset number, it indicates that the strut motor is started and stopped too frequently, and the strut motor is prohibited from continuing to operate, so as to protect the strut motor. In addition, a buzzing alarm device can be added to remind a user that the stay bar motor is started or stopped too frequently.
Referring to fig. 3, an embodiment of the present invention provides an overheat protection device for a stay bar motor of a back door of an automobile, where the device includes: a counting unit and a control unit.
The counting unit is used for counting according to the running time, the downtime and a preset counting rule of the stay bar motor and counting the counting value in real time.
Specifically, referring to fig. 4, the counting unit includes: a count up module and a count down module. The counting increasing module is used for increasing a counting unit every time a first time interval passes when the stay bar motor runs. And the counting reduction module is used for reducing the counting by one counting unit every time when the second time interval passes when the strut motor is stopped.
The control unit is used for forbidding the stay bar motor to continue to operate when the count value is greater than a preset first count threshold value, and allowing the stay bar motor to operate again when the count value is less than a preset second count threshold value; wherein the preset first counting threshold is larger than the preset second counting threshold.
Further, the overheat protection device for the motor of the automobile back door stay bar in the embodiment of the invention is explained as follows:
referring to fig. 2, in the overheat protection scenario, when a user opens or closes the back door of the automobile, the motor continues to operate, the count is increased by one count unit 1 every time a first time interval (which may be a millisecond, a takes a value according to actual requirements) elapses, the stay motor is prohibited from continuing to operate when the count value increases to a preset first count threshold K1 (where K1 may take 2500), the count is decreased by one count unit 1 every time a second time interval (which may be B millisecond, where B takes a value according to actual requirements) elapses after the stay motor stops operating, and the stay motor is permitted to operate again when the count value decreases to a preset second count threshold K2 (where K2 may take 0), which is shown in fig. 2.
According to the overheat protection device for the stay bar motor of the automobile back door, the operation time and the shutdown time of the stay bar motor are counted, the counted value is compared with the preset first counting threshold value, when the counted value is increased to the preset first counting threshold value K1, the operation time of the stay bar motor is long, overheat protection is started, and the stay bar motor is forbidden to continue to operate. And after the stay bar motor stops operating for a period of time, the counting value is reduced, and when the counting value is reduced to a preset second counting threshold value K2, the heat dissipation of the stay bar motor is performed for enough time, the overheat protection is removed, and the stay bar motor is allowed to operate again. Therefore, the overheat protection device for the stay bar motor of the automobile back door in the embodiment of the invention can avoid frequent disconnection and closing of the bimetallic strip contact to carry out overheat protection on the stay bar motor, only in a few cases, the disconnection and closing of the bimetallic strip contact can be adopted to carry out overheat protection on the stay bar motor, the bimetallic strip is equivalent to be used as a redundant secondary overheat protection measure, the reliability of overheat protection is increased, and meanwhile, the service life of the overheat protection device can also be prolonged due to the fact that the frequent disconnection and closing of the bimetallic strip contact is reduced.
As an optional implementation manner, in the overheat protection device for the stay bar motor of the back door of the automobile in the embodiment of the present invention, the control unit is further configured to determine whether the stay bar motor is in a collision rotation state, if so, allow the stay bar motor to continue to operate, prohibit the stay bar motor from continuing to operate until the count value is greater than a preset third count threshold, and allow the stay bar motor to operate again until the count value is smaller than a preset second count threshold; wherein the preset third count threshold is greater than the preset first count threshold.
Specifically, referring to fig. 2, in a collision scenario, when a user opens or closes a back door of an automobile, the strut motor may continue to operate, the count is increased by one count unit 1 every time a first time interval elapses, when the count value increases to a preset first count threshold K1, at this time, if the strut motor is in a collision rotation state, the strut motor is allowed to continue to operate, the count is increased by one count unit 1 every time the first time interval elapses, and when the count value is greater than a preset third count threshold K3, the strut motor is prohibited from continuing to operate, at this time, it is indicated that rotation of the strut motor has ended or a rotation angle requirement has been reached. After the strut motor stops running, the counting is reduced by one counting unit 1 every time when the second time interval passes, and when the counting value is reduced to a preset second counting threshold value K2, the strut motor is allowed to run again at the moment. If it is defined that the back door closing anti-pinch device of the automobile is reversely rotated by 15 degrees at a specified speed v, the operation time C is converted into 15 degrees/v, namely, the number of the back door stay bar motor revolution timer is increased by N15 degrees/v (v x A), and therefore K3 can be K2+ N. The automobile back door stay bar motor overheating protection device provided by the embodiment of the invention takes the consideration that the safety of protection personnel is required to be considered in the opening or closing process of the automobile back door, so that the personnel are prevented from being pinched and injured. When the gyration is prevented pressing from both sides in the production collision, if at this gyration in-process, if triggered the overheat protection function, temporarily can not the cutting off circuit, let the vaulting pole motor continue the gyration operation for a period, can not lead to the collision to prevent pressing from both sides the gyration and suspend, the function is still effective is prevented pressing from both sides in the collision, improves the security of vehicle.
As an optional implementation manner, in the overheat protection device for the stay bar motor of the back door of the automobile in the embodiment of the present invention, the control unit is further configured to allow the stay bar motor to continue to operate when the count value is not greater than the preset first count threshold. Specifically, referring to fig. 2, in a normal operation scenario, as long as the count value is not greater than the preset first count threshold K1, which indicates that the operation time of the strut motor is always within a suitable range, the strut motor generally does not overheat, and the strut motor may be allowed to continue to operate.
As an optional implementation manner, in the overheat protection device for the stay bar motor of the back door of the automobile in the embodiment of the present invention, the control unit is further configured to determine whether the number of times of operation and shutdown of the stay bar motor within a preset time exceeds a preset number of times, and if so, prohibit the stay bar motor from continuing to operate. Specifically, as shown in fig. 2, in the frequent operation scenario, although the count value is not greater than the preset first count threshold K1, it is considered that frequent operation and stop of the strut motor are also disadvantageous to the strut motor, and therefore, if the number of times of operation and stop of the strut motor within the preset time exceeds the preset number, it indicates that the strut motor is started and stopped too frequently, and the strut motor is prohibited from continuing to operate, so as to protect the strut motor.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An automobile back door stay bar motor overheating protection method is characterized by comprising the following steps:
counting according to the running time, the downtime and a preset counting rule of the strut motor, and counting the count value in real time;
when the count value is greater than a preset first count threshold value, prohibiting the strut motor from continuing to operate until when the count value is less than a preset second count threshold value, allowing the strut motor to operate again; wherein the preset first counting threshold is larger than the preset second counting threshold.
2. The method for protecting against overheat of a stay rod motor of a back door of an automobile according to claim 1, wherein said counting according to said operation time and stop time and according to a preset counting rule comprises:
when the strut motor operates, counting is increased by one counting unit every time a first time interval passes;
when the strut motor is stopped, the count is decremented by one count unit each time a second time interval elapses.
3. The method for protecting an overheat of a stay motor of a back door of an automobile according to claim 1, wherein before prohibiting the stay motor from continuing to operate when the count value is greater than a preset first count threshold, the method further comprises:
judging whether the strut motor is in a collision rotation state, if so, allowing the strut motor to continue to operate, prohibiting the strut motor from continuing to operate until the count value is greater than a preset third count threshold, and allowing the strut motor to operate again until the count value is less than a preset second count threshold; wherein the preset third count threshold is greater than the preset first count threshold.
4. The method for protecting an overheat of a strut motor of a back door of an automobile according to claim 1, wherein the step of counting according to an operation time, a stop time and a preset counting rule of the strut motor and counting a count value in real time further comprises the steps of:
and when the counting value is not greater than a preset first counting threshold value, allowing the strut motor to continue to operate.
5. The method of claim 4, wherein when the count value is not greater than a first preset count threshold, allowing the strut motor to continue to operate, further comprising:
and judging whether the running and stopping times of the stay bar motor in the preset time exceed the preset times, if so, prohibiting the stay bar motor from continuing running.
6. An automotive back door strut motor overheat protection device, the device comprising:
the counting unit is used for counting according to the running time, the shutdown time and a preset counting rule of the stay bar motor and counting a counting value in real time;
the control unit is used for forbidding the stay bar motor to continue to operate when the counting value is greater than a preset first counting threshold value, and allowing the stay bar motor to operate again when the counting value is less than a preset second counting threshold value; wherein the preset first counting threshold is larger than the preset second counting threshold.
7. The apparatus of claim 6, wherein the counter unit comprises:
the counting increasing module is used for increasing a counting unit every time a first time interval passes when the stay bar motor runs;
and the counting reduction module is used for reducing the counting by one counting unit every time when the second time interval passes when the strut motor is stopped.
8. The device of claim 6 for protecting against overheating of a motor of a back door stay of an automobile, wherein:
the control unit is further used for judging whether the strut motor is in a collision rotation state, if so, allowing the strut motor to continue to operate, and forbidding the strut motor to continue to operate until the count value is greater than a preset third count threshold value, and allowing the strut motor to operate again until the count value is less than a preset second count threshold value; wherein the preset third count threshold is greater than the preset first count threshold.
9. The device of claim 6 for protecting against overheating of a motor of a back door stay of an automobile, wherein:
the control unit is also used for allowing the strut motor to continue to operate when the counting value is not greater than a preset first counting threshold value.
10. The device of claim 9 for protecting against overheating of a motor of a back door stay of an automobile, wherein:
the control unit is further used for judging whether the operation and shutdown times of the stay bar motor within the preset time exceed the preset times, and if yes, the stay bar motor is forbidden to continue to operate.
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| CN202110455374.2A CN113098366B (en) | 2021-04-26 | 2021-04-26 | Overheat protection method and device for stay bar motor of automobile back door |
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| CN202110455374.2A CN113098366B (en) | 2021-04-26 | 2021-04-26 | Overheat protection method and device for stay bar motor of automobile back door |
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| CN113098366A true CN113098366A (en) | 2021-07-09 |
| CN113098366B CN113098366B (en) | 2022-07-08 |
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Citations (4)
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|---|---|---|---|---|
| US5760556A (en) * | 1996-01-26 | 1998-06-02 | General Electric Company | Motor controller and protector unit |
| US20060290310A1 (en) * | 2005-06-28 | 2006-12-28 | Asmo Co., Ltd. | Motor control apparatus |
| US20070126561A1 (en) * | 2000-09-08 | 2007-06-07 | Automotive Technologies International, Inc. | Integrated Keyless Entry System and Vehicle Component Monitoring |
| CN107327243A (en) * | 2017-06-30 | 2017-11-07 | 无锡和晶信息技术有限公司 | A kind of electric tail gate control method |
-
2021
- 2021-04-26 CN CN202110455374.2A patent/CN113098366B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5760556A (en) * | 1996-01-26 | 1998-06-02 | General Electric Company | Motor controller and protector unit |
| US20070126561A1 (en) * | 2000-09-08 | 2007-06-07 | Automotive Technologies International, Inc. | Integrated Keyless Entry System and Vehicle Component Monitoring |
| US20060290310A1 (en) * | 2005-06-28 | 2006-12-28 | Asmo Co., Ltd. | Motor control apparatus |
| CN107327243A (en) * | 2017-06-30 | 2017-11-07 | 无锡和晶信息技术有限公司 | A kind of electric tail gate control method |
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| Publication number | Publication date |
|---|---|
| CN113098366B (en) | 2022-07-08 |
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