CN117007956A - High-voltage relay service life prediction method and device and electronic equipment - Google Patents
High-voltage relay service life prediction method and device and electronic equipment Download PDFInfo
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- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
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Abstract
The invention discloses a high-voltage relay life prediction method, a device and electronic equipment, wherein the high-voltage relay life prediction method comprises the following steps: according to historical test data of the high-voltage relay, determining total times of on-load suction, total times of on-load cutting and service life of the on-load operation of the high-voltage relay in each on-load operation current interval; acquiring the on-load suction times, the on-load cutting times and the on-load working time length of the to-be-detected high-voltage relay in each on-load working current interval; and determining the residual service life of the high-voltage relay according to the total number of the suction and the total number of the cutting and the service life of the high-voltage relay, the number of the suction and the cutting and the service life of the high-voltage relay to be tested. The service life prediction method designed by the embodiment of the invention is simpler, the feasibility of the service life prediction of the high-voltage relay is improved, the time factor of the on-load working time of the high-voltage relay is considered, and the accuracy of the service life prediction of the high-voltage relay is improved.
Description
Technical Field
The invention relates to the technical field of high-voltage relays, in particular to a high-voltage relay service life prediction method, a high-voltage relay service life prediction device and electronic equipment.
Background
With the rapid development of new energy automobiles, the high-voltage safety problem of the new energy automobiles is also getting more and more attention from users and whole factories. The battery pack is internally provided with a high-voltage relay, the high-voltage relay bears the high-voltage connection and disconnection of the whole vehicle, and the operation, the charging and the maintenance of the high-voltage relay every day relate to the action of the high-voltage relay, and the working stability of the high-voltage relay relates to the high-voltage safety, the service life of parts and the reliability of the whole vehicle. Therefore, the life prediction of the high-voltage relay is particularly important.
The current method for judging the failure of the high-voltage relay is that the contact resistance exceeds the standard or mechanical and electrical failures occur, and the method only focuses on related mechanical and electrical parameters, so that the accuracy of the life prediction of the high-voltage relay is not high.
Disclosure of Invention
The invention provides a life prediction method and device for a high-voltage relay and electronic equipment, wherein the life prediction method is simpler, the feasibility of life prediction of the high-voltage relay is improved, the time factor of the load working time of the high-voltage relay is considered, and the accuracy of life prediction of the high-voltage relay is improved.
According to an aspect of the present invention, there is provided a high-voltage relay life prediction method including:
According to historical test data of the high-voltage relay, determining total times of on-load suction, total times of on-load cutting and service life of the on-load operation of the high-voltage relay in each on-load operation current interval;
acquiring the on-load suction times, the on-load cutting times and the on-load working time length of the to-be-detected high-voltage relay in each on-load working current interval;
and determining the residual service life of the high-voltage relay according to the total number of the suction and the total number of the cutting and the service life of the high-voltage relay, the number of the suction and the cutting and the service life of the high-voltage relay to be tested.
Further, determining a remaining life of the high-voltage relay according to the total number of suction with load, the total number of cutting with load, the service life of the load, and the number of suction with load, the number of cutting with load, and the working time of the load of the high-voltage relay to be tested, including:
determining a single load actuation life loss coefficient of the high-voltage relay in each load working current interval according to the total load actuation times of the high-voltage relay in each load working current interval;
determining a single load cut-off life loss coefficient of the high-voltage relay in each load working current interval according to the total load cut-off times of the high-voltage relay in each load working current interval;
Determining a unit time life loss coefficient of the high-voltage relay in each belt load working current interval according to the belt load running life of the high-voltage relay in each belt load working current interval;
and determining the residual life proportion of the high-voltage relay according to the single load suction life loss coefficient, the single load cut-off life loss coefficient and the unit time life loss coefficient of each load working current interval, and the load suction times, the load cut-off times and the load working time length of the high-voltage relay to be tested.
Further, determining a remaining life ratio of the high-voltage relay according to the single load actuation life loss coefficient, the single load cut-off life loss coefficient and the unit time life loss coefficient of each load working current interval, and the load actuation times, the load cut-off times and the load working time length of the high-voltage relay to be tested, including:
for each load working current interval, determining the load suction life loss coefficient of the high-voltage relay in the load working current interval according to the single load suction life loss coefficient in the load working current interval and the load suction times of the high-voltage relay to be tested;
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested;
For each on-load working current interval, determining the on-load working time life loss coefficient of the high-voltage relay under the on-load working current interval according to the unit time life loss coefficient under the on-load working current interval and the on-load working time of the high-voltage relay to be tested;
and determining the residual life proportion of the high-voltage relay according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval.
Further, determining a remaining life ratio of the high-voltage relay according to the load engaging life loss coefficient, the load cutting life loss coefficient, and the load operating time life loss coefficient in each load operating current interval, including:
determining the total life loss coefficient of the high-voltage relay according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval;
and determining the residual life proportion of the high-voltage relay according to the total life loss coefficient of the high-voltage relay.
Further, for each load working current interval, determining the load actuation life loss coefficient of the high-voltage relay under the load working current interval according to the single load actuation life loss coefficient under the load working current interval and the load actuation times of the high-voltage relay to be tested, including:
For each load working current interval, determining the load suction life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load suction life loss coefficient in the load working current interval and the load suction times of the high-voltage relay to be tested;
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested, comprising:
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested;
for each loaded working current interval, determining the loaded working time life loss coefficient of the high-voltage relay in the loaded working current interval according to the unit time life loss coefficient in the loaded working current interval and the loaded working time of the high-voltage relay to be tested, including:
and for each loaded working current interval, determining the service life loss coefficient of the loaded working time length of the high-voltage relay in the loaded working current interval according to the product of the service life loss coefficient of the unit time in the loaded working current interval and the loaded working time length of the high-voltage relay to be tested.
Further, determining the single load actuation life loss coefficient of the high-voltage relay in each load working current interval according to the total load actuation times of the high-voltage relay in each load working current interval comprises:
taking the reciprocal of the total number of on-load actuation of the high-voltage relay in each on-load working current interval to obtain the single on-load actuation life loss coefficient of the high-voltage relay in each on-load working current interval;
determining a single load cut-off life loss coefficient of the high-voltage relay in each load working current interval according to the total load cut-off times of the high-voltage relay in each load working current interval, comprising:
taking the reciprocal of the total number of the on-load cut-off times of the high-voltage relay in each on-load working current interval to obtain the single on-load cut-off life loss coefficient of the high-voltage relay in each on-load working current interval;
determining a life loss coefficient of the high-voltage relay in each belt load working current interval in unit time according to the belt load working life of the high-voltage relay in each belt load working current interval, comprising:
and taking the reciprocal of the service life of the high-voltage relay in each belt-load working current interval to obtain the service life loss coefficient of the high-voltage relay in each belt-load working current interval in unit time.
According to another aspect of the present invention, there is provided a high-voltage relay life prediction apparatus including:
the historical data determining module is used for determining the total number of on-load suction, the total number of on-load cutting-off and the service life of the on-load operation of the high-voltage relay in each on-load working current interval according to historical test data of the high-voltage relay;
the current data acquisition module is used for acquiring the on-load attracting times, the on-load cutting times and the on-load working time length of the to-be-detected high-voltage relay in each on-load working current interval;
the residual life determining module is used for determining the residual life of the high-voltage relay according to the total number of the suction and the total number of the cutting and the service life of the high-voltage relay to be tested, the number of the suction and the cutting and the service life of the high-voltage relay.
Further, the remaining life determining module includes:
the pull-in loss determining unit is used for determining a single pull-in life loss coefficient of each load working current interval of the high-voltage relay according to the total number of the load pull-in times of each load working current interval of the high-voltage relay;
the cut-off loss determining unit is used for determining a single load cut-off life loss coefficient of each load working current interval of the high-voltage relay according to the total load cut-off times of each load working current interval of the high-voltage relay;
The time loss determining unit is used for determining a unit time life loss coefficient of each load working current interval of the high-voltage relay according to the load running life of each load working current interval of the high-voltage relay;
the residual life determining unit is used for determining the residual life proportion of the high-voltage relay according to the single load suction life loss coefficient, the single load cut-off life loss coefficient and the unit time life loss coefficient of each load working current interval, as well as the load suction times, the load cut-off times and the load working time length of the high-voltage relay to be tested.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the high voltage relay life prediction method according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the high voltage relay lifetime prediction method according to any one of the embodiments of the present invention when executed.
According to the high-voltage relay life prediction method, the total number of on-load suction, the total number of on-load cutting-off and the service life of the on-load operation of the high-voltage relay in each on-load working current interval are determined according to historical test data of the high-voltage relay; the method comprises the steps of obtaining the on-load suction times, the on-load cutting-off times and the on-load working time of a to-be-detected high-voltage relay in each on-load working current interval; and finally, determining the residual service life of the high-voltage relay according to the total number of suction and pull-in times, the total number of cutting-off times and the service life of the high-voltage relay to be tested, and the number of suction and pull-in times, the number of cutting-off times and the service life of the high-voltage relay to be tested, wherein the service life prediction method is simpler, and the service life prediction feasibility of the high-voltage relay is improved. In addition, the embodiment of the invention not only considers the factors of the on-load suction times and the on-load cutting times in the prior art, but also considers the time factor of the on-load working time of the high-voltage relay, thereby making up the possible missing failure condition in the traditional life prediction process and improving the life prediction accuracy of the high-voltage relay.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a high voltage relay life prediction method according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for predicting life of a high voltage relay provided in accordance with an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a life prediction device for a high-voltage relay according to an embodiment of the present invention;
fig. 4 shows a schematic diagram of the structure of an electronic device that may be used to implement an embodiment of the invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention provides a high-voltage relay life prediction method, which is used for predicting the residual life of a high-voltage relay arranged in a vehicle-mounted battery pack and is applied to a battery management system (Battery Management System, BMS), and fig. 1 is a flow chart of the high-voltage relay life prediction method provided according to the embodiment of the invention, and referring to fig. 1, the high-voltage relay life prediction method comprises the following steps:
S110, determining the total number of load suction, the total number of load cutting-off and the service life of the load operation of the high-voltage relay in each load operation current interval according to historical test data of the high-voltage relay.
The total number of attraction under load can be understood as the maximum number of attraction allowed to be carried out on the high-voltage relay only in a certain load working current interval; the total number of on-load cutting operations is understood to be the maximum number of operations allowed to be performed on the high-voltage relay only in a certain on-load operating current interval; the belt running life is understood to be the maximum operating time that allows only the high-voltage relay to be normally operated under load at a certain load operating current interval. The on-load working current interval can be set according to actual conditions, and can also be obtained according to historical experimental data statistics, and the embodiment of the invention is not limited to the on-load working current interval.
Specifically, the maximum number of times of attraction processing of the high-voltage relay of the same model in each loaded working current interval can be determined according to historical experimental data of the high-voltage relay, meanwhile, the maximum number of times of cutting-off processing of the high-voltage relay of the same model in each loaded working current interval is determined, and the maximum working time of the high-voltage relay of the same model in each loaded working current interval is determined.
S120, acquiring the on-load suction times, the on-load cutting times and the on-load working time of the to-be-detected high-voltage relay in each on-load working current interval.
The high-voltage relay to be tested can be understood as a high-voltage relay working under load, and the high-voltage relay to be tested needs to be the same type of high-voltage relay with the high-voltage relay counted in the historical experimental data. The number of suction times under load can be understood as the number of times the high-voltage relay has been subjected to suction treatment during the work under load; the number of times of cutting off the load can be understood as the number of times the high-voltage relay has performed cutting-off processing on the load working device; the on-load operation time can be understood as the normal on-load operation time of the high-voltage relay. The high-voltage relay and the high-voltage relay to be tested are the same type of high-voltage relay.
For example, table 1 shows the number of on-load pull-in times, the number of on-load cut-off times, and the on-load operation time period of the high-voltage relay to be tested in each on-load operation current interval.
Table 1 shows the number of times of load suction, the number of times of load cut-off and the length of load operation of the high-voltage relay to be tested in each load operation current interval
S130, determining the residual service life of the high-voltage relay according to the total number of the suction of the load, the total number of the cutting-off of the load and the service life of the load, and the suction number of the load, the cutting-off number of the load and the working time of the load of the high-voltage relay to be tested.
Specifically, the single load actuation life loss coefficient of the high-voltage relay in each load working current interval can be determined according to the total load actuation times of the high-voltage relay in each load working current interval; determining a single load cut-off life loss coefficient of the high-voltage relay in each load working current interval according to the total load cut-off times of the high-voltage relay in each load working current interval; meanwhile, determining a life loss coefficient of the high-voltage relay in each belt load working current interval in unit time according to the belt load running life of the high-voltage relay in each belt load working current interval; finally, determining the residual life proportion of the high-voltage relay according to the single load suction life loss coefficient, the single load cut-off life loss coefficient and the unit time life loss coefficient of each load working current interval, as well as the load suction times, the load cut-off times and the load working time length of the high-voltage relay to be tested; the method comprises the steps of determining the load suction loss of the high-voltage relay to be detected according to the total load suction times and the load suction times of the high-voltage relay to be detected, determining the load cutting loss of the high-voltage relay to be detected according to the total load cutting times and the load cutting times of the high-voltage relay to be detected, determining the load working time loss of the high-voltage relay to be detected according to the load running service life and the load working time length of the high-voltage relay to be detected, giving different weights to the determined load suction loss, the load cutting loss and the load working time length loss of the high-voltage relay to be detected, and finally determining the residual service life of the high-voltage relay according to the different weights of the load suction loss, the load cutting loss and the load working time length loss of the high-voltage relay to be detected.
According to the high-voltage relay life prediction method, the total number of on-load suction, the total number of on-load cutting-off and the service life of the on-load operation of the high-voltage relay in each on-load working current interval are determined according to historical test data of the high-voltage relay; the method comprises the steps of obtaining the on-load suction times, the on-load cutting-off times and the on-load working time of a to-be-detected high-voltage relay in each on-load working current interval; and finally, determining the residual service life of the high-voltage relay according to the total number of suction and pull-in times, the total number of cutting-off times and the service life of the high-voltage relay to be tested, and the number of suction and pull-in times, the number of cutting-off times and the service life of the high-voltage relay to be tested, wherein the service life prediction method is simpler, and the service life prediction feasibility of the high-voltage relay is improved. In addition, the embodiment of the invention not only considers the factors of the on-load suction times and the on-load cutting times in the prior art, but also considers the time factor of the on-load working time of the high-voltage relay, thereby making up the possible missing failure condition in the traditional life prediction process and improving the life prediction accuracy of the high-voltage relay.
The embodiment of the present invention optimizes the remaining life of the high-voltage relay determined in step S130 according to the total number of suction on-load, the total number of cutting off on-load, the service life of the on-load, the number of suction on-load, the number of cutting off on-load, and the service life of the on-load of the high-voltage relay to be tested based on the above embodiment, and fig. 2 is a flowchart of another method for predicting the life of the high-voltage relay according to the embodiment of the present invention, and referring to fig. 2, the method for predicting the life of the high-voltage relay includes:
S210, determining the total number of load suction, the total number of load cutting-off and the service life of the load operation of the high-voltage relay in each load working current interval according to historical test data of the high-voltage relay.
S220, acquiring the on-load suction times, the on-load cutting times and the on-load working time of the to-be-detected high-voltage relay in each on-load working current interval.
S2301, determining a single load actuation life loss coefficient of the high-voltage relay in each load working current interval according to the total load actuation times of the high-voltage relay in each load working current interval.
The single load actuation life loss coefficient can be understood as the life loss degree of the high-voltage relay after single load actuation treatment.
Specifically, the total number of the on-load actuation of the high-voltage relay in each on-load working current interval can be counted to obtain the single on-load actuation life loss coefficient of the high-voltage relay in each on-load working current interval.
For example, setting the working current as I, counting the total number of on-load actuation and calculating the single on-load actuation life loss coefficient:
when the on-load working current interval is I less than or equal to I 1 When the total number of suction times of the belt load is alpha 0 The single-load suction life loss coefficient is
When the on-load working current interval is I 1 <I≤I 2 When the total number of suction times of the belt load is alpha 1 The single-load suction life loss coefficient is
···
When the on-load working current interval is I>I n When the total number of suction times of the belt load is alpha n The single-load suction life loss coefficient is
S2302, determining a single load cut-off life loss coefficient of the high-voltage relay in each load working current interval according to the total load cut-off times of the high-voltage relay in each load working current interval.
The single load cut-off life loss coefficient can be understood as the life loss degree of the high-voltage relay after single load cut-off treatment.
Specifically, the total number of the load cut-off times of the high-voltage relay in each load working current interval can be counted to obtain the single load cut-off life loss coefficient of the high-voltage relay in each load working current interval.
For example, setting the working current as I, counting the total number of load cut-off times, and calculating the single load cut-off life loss coefficient:
when the on-load working current interval is I less than or equal to I 1 When the total number of times of load cutting is beta 0 Single load cut life loss factor of
When the on-load working current interval is I 1 <I≤I 2 When the total number of times of load cutting is beta 1 Single load cut life loss factor of
···
When the on-load working current interval is I>I n When the total number of times of load cutting is beta n Single load cut life loss factor of
S2303, determining a life loss coefficient of the high-voltage relay in each load working current interval in unit time according to the load running life of the high-voltage relay in each load working current interval.
The life loss coefficient of the unit time can be understood as the life loss degree of the high-voltage relay in the unit time under the normal load working condition.
Specifically, the service life of the high-voltage relay in each load working current interval can be counted down to obtain the service life loss coefficient of the high-voltage relay in each load working current interval in unit time.
Illustratively, setting the operating current as I, counting the belt run life, and calculating the life loss coefficient per unit time:
when the on-load working current interval is I less than or equal to I 1 When the belt running life is gamma 0 The life loss coefficient per unit time is
When the on-load working current interval is I 1 <I≤I 2 When the belt running life is gamma 1 The life loss coefficient per unit time is
···
When the on-load working current interval is I >I n When the belt running life is gamma n The life loss coefficient per unit time is
S2304, determining the residual life proportion of the high-voltage relay according to the single load suction life loss coefficient, the single load cut-off life loss coefficient and the unit time life loss coefficient of each load working current interval, as well as the load suction times, the load cut-off times and the load working time length of the high-voltage relay to be tested.
Specifically, for each on-load working current interval, determining the on-load attraction life loss coefficient of the high-voltage relay in the on-load working current interval according to the single on-load attraction life loss coefficient in the on-load working current interval and the on-load attraction times of the high-voltage relay to be tested; for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested; for each on-load working current interval, determining the on-load working time life loss coefficient of the high-voltage relay under the on-load working current interval according to the unit time life loss coefficient under the on-load working current interval and the on-load working time of the high-voltage relay to be tested; and finally, determining the residual life proportion of the high-voltage relay according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval.
According to the embodiment of the invention, the single load actuation life loss coefficient of the high-voltage relay in each load working current interval is determined according to the total load actuation times of the high-voltage relay in each load working current interval; determining a single load cut-off life loss coefficient of the high-voltage relay in each load working current interval according to the total load cut-off times of the high-voltage relay in each load working current interval; meanwhile, determining a life loss coefficient of the high-voltage relay in each belt load working current interval in unit time according to the belt load running life of the high-voltage relay in each belt load working current interval; and finally, determining the residual life proportion of the high-voltage relay according to the single load suction life loss coefficient, the single load cut-off life loss coefficient and the unit time life loss coefficient of each load working current interval, and the load suction times, the load cut-off times and the load working time length of the high-voltage relay to be tested, wherein the life prediction method is simpler, and the feasibility of the life prediction of the high-voltage relay is improved. In addition, the embodiment of the invention not only considers the factors of the on-load suction times and the on-load cutting times in the prior art, but also considers the time factor of the on-load working time of the high-voltage relay, thereby making up the possible missing failure condition in the traditional life prediction process and improving the life prediction accuracy of the high-voltage relay.
Optionally, determining the remaining life ratio of the high-voltage relay according to the single load actuation life loss coefficient, the single load cut-off life loss coefficient and the unit time life loss coefficient of each load working current interval, and the load actuation times, the load cut-off times and the load working time length of the high-voltage relay to be tested includes:
for each load working current interval, determining the load suction life loss coefficient of the high-voltage relay in the load working current interval according to the single load suction life loss coefficient in the load working current interval and the load suction times of the high-voltage relay to be tested;
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested;
for each on-load working current interval, determining the on-load working time life loss coefficient of the high-voltage relay under the on-load working current interval according to the unit time life loss coefficient under the on-load working current interval and the on-load working time of the high-voltage relay to be tested;
And determining the residual life proportion of the high-voltage relay according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval.
Specifically, for each load working current interval, determining the load suction life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load suction life loss coefficient in the load working current interval and the load suction times of the high-voltage relay to be tested; for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested; and for each loaded working current interval, determining the service life loss coefficient of the loaded working time length of the high-voltage relay in the loaded working current interval according to the product of the service life loss coefficient of the unit time in the loaded working current interval and the loaded working time length of the high-voltage relay to be tested.
Exemplary, let the on-load suction life loss coefficient of the high-voltage relay to be tested be delta 1 The load cut life loss coefficient is delta 2 And the service life loss coefficient of the load working time is delta 3 ；
Finally, the total life loss coefficient of the high-voltage relay can be determined according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval; and determining the residual life proportion of the high-voltage relay according to the total life loss coefficient of the high-voltage relay.
Optionally, determining the remaining life ratio of the high-voltage relay according to the load engaging life loss coefficient, the load cutting life loss coefficient, and the load operating time life loss coefficient in each load operating current interval includes:
determining the total life loss coefficient of the high-voltage relay according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval;
and determining the residual life proportion of the high-voltage relay according to the total life loss coefficient of the high-voltage relay.
The total life loss coefficient of the high-voltage relay to be tested is shown as delta, and the residual life proportion of the high-voltage relay to be tested is shown as RUL;
RUL＝1-δ；
finally, according to the formulaAnd calculating the residual life ratio of the to-be-detected high-voltage relay.
Optionally, for each on-load working current interval, determining the on-load actuation life loss coefficient of the high-voltage relay under the on-load working current interval according to the single on-load actuation life loss coefficient under the on-load working current interval and the on-load actuation times of the high-voltage relay to be tested includes:
for each load working current interval, determining the load suction life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load suction life loss coefficient in the load working current interval and the load suction times of the high-voltage relay to be tested;
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested comprises the following steps:
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested;
for each on-load working current interval, determining the on-load working time length life loss coefficient of the high-voltage relay under the on-load working current interval according to the unit time life loss coefficient under the on-load working current interval and the on-load working time length of the high-voltage relay to be tested comprises the following steps:
And for each loaded working current interval, determining the service life loss coefficient of the loaded working time length of the high-voltage relay in the loaded working current interval according to the product of the service life loss coefficient of the unit time in the loaded working current interval and the loaded working time length of the high-voltage relay to be tested.
Optionally, determining the single load actuation life loss coefficient of the high-voltage relay in each load working current interval according to the total load actuation times of the high-voltage relay in each load working current interval includes:
taking the reciprocal of the total number of on-load actuation of the high-voltage relay in each on-load working current interval to obtain the single on-load actuation life loss coefficient of the high-voltage relay in each on-load working current interval;
determining a single load cut-off life loss coefficient of the high-voltage relay in each load working current interval according to the total load cut-off times of the high-voltage relay in each load working current interval comprises the following steps:
taking the reciprocal of the total number of the on-load cut-off times of the high-voltage relay in each on-load working current interval to obtain the single on-load cut-off life loss coefficient of the high-voltage relay in each on-load working current interval;
determining a life loss coefficient of the high-voltage relay in each belt load working current interval according to the belt load working life of the high-voltage relay in each belt load working current interval comprises the following steps:
And taking the reciprocal of the service life of the high-voltage relay in each belt-load working current interval to obtain the service life loss coefficient of the high-voltage relay in each belt-load working current interval in unit time.
An embodiment of the present invention provides a life prediction device for a high-voltage relay, and fig. 3 is a schematic structural diagram of the life prediction device for the high-voltage relay provided in the embodiment of the present invention, and referring to fig. 3, the life prediction device 300 for the high-voltage relay includes:
the historical data determining module 310 is configured to determine a total number of on-load actuation, a total number of on-load cutoff, and a service life of the on-load operation of the high-voltage relay in each on-load working current interval according to historical test data of the high-voltage relay;
the current data acquisition module 320 is configured to acquire the number of on-load actuation, the number of on-load disconnection, and the on-load working time duration of the to-be-detected high-voltage relay in each on-load working current interval;
the remaining life determining module 330 is configured to determine the remaining life of the high-voltage relay according to the total number of load pull-in times, the total number of load cut-off times, the service life of the load, and the number of load pull-in times, the number of load cut-off times, and the service life of the load.
Optionally, the remaining life determining module 330 includes:
The attraction loss determination submodule is used for determining a single attraction life loss coefficient of each attraction working current interval of the high-voltage relay according to the total attraction times of the attraction working current intervals of the high-voltage relay;
the cut-off loss determination submodule is used for determining a single load cut-off life loss coefficient of each load working current interval of the high-voltage relay according to the total load cut-off times of each load working current interval of the high-voltage relay;
the time loss determination submodule is used for determining a unit time life loss coefficient of each load working current interval of the high-voltage relay according to the load running life of each load working current interval of the high-voltage relay;
the residual life determining sub-module is used for determining the residual life proportion of the high-voltage relay according to the single load suction life loss coefficient, the single load cutting life loss coefficient and the unit time life loss coefficient of each load working current interval, as well as the load suction times, the load cutting times and the load working time length of the high-voltage relay to be tested.
Optionally, the remaining life determining submodule includes:
the pull-in loss determining unit is used for determining the pull-in life loss coefficient of the high-voltage relay in the load working current interval according to the single load pull-in life loss coefficient in the load working current interval and the load pull-in times of the high-voltage relay to be tested;
The cut-off loss determining unit is used for determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested;
the time length loss determining unit is used for determining the service life loss coefficient of the on-load working time length of the high-voltage relay under the on-load working current interval according to the service life loss coefficient of the unit time under the on-load working current interval and the on-load working time length of the high-voltage relay to be tested;
and the residual life determining unit is used for determining the residual life proportion of the high-voltage relay according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval.
Optionally, the remaining life determining unit includes:
the total life loss determining subunit is used for determining the total life loss coefficient of the high-voltage relay according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval;
And the residual life determining subunit is used for determining the residual life proportion of the high-voltage relay according to the total life loss coefficient of the high-voltage relay.
The attraction loss determination unit includes:
for each load working current interval, determining the load suction life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load suction life loss coefficient in the load working current interval and the load suction times of the high-voltage relay to be tested;
the cut-off loss determination unit includes:
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested;
the time length loss determination unit includes:
and for each loaded working current interval, determining the service life loss coefficient of the loaded working time length of the high-voltage relay in the loaded working current interval according to the product of the service life loss coefficient of the unit time in the loaded working current interval and the loaded working time length of the high-voltage relay to be tested.
Optionally, the pull-in loss determination submodule includes:
Taking the reciprocal of the total number of on-load actuation of the high-voltage relay in each on-load working current interval to obtain the single on-load actuation life loss coefficient of the high-voltage relay in each on-load working current interval;
the cut-off loss determination subunit includes:
taking the reciprocal of the total number of the on-load cut-off times of the high-voltage relay in each on-load working current interval to obtain the single on-load cut-off life loss coefficient of the high-voltage relay in each on-load working current interval;
the time loss determination submodule includes:
and taking the reciprocal of the service life of the high-voltage relay in each belt-load working current interval to obtain the service life loss coefficient of the high-voltage relay in each belt-load working current interval in unit time.
The high-voltage relay service life prediction device provided by the embodiment of the invention can execute the high-voltage relay service life prediction method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Fig. 4 shows a schematic diagram of the structure of an electronic device that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the high-voltage relay life prediction method.
In some embodiments, the high voltage relay life prediction method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the high voltage relay life prediction method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the high voltage relay life prediction method by any other suitable means (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A high voltage relay life prediction method, comprising:
according to historical test data of the high-voltage relay, determining total times of carrying and sucking, total times of carrying and cutting off and service life of carrying of the high-voltage relay when the high-voltage relay works in each carrying working current interval;
acquiring the on-load suction times, the on-load cutting times and the on-load working time length of the to-be-detected high-voltage relay in each on-load working current interval;
And determining the residual service life of the high-voltage relay according to the total number of the suction and closing of the belt load, the total number of the cutting and the service life of the belt load, the suction and closing number of the belt load, the cutting and the service life of the belt load of the high-voltage relay to be tested.
2. The method according to claim 1, wherein determining the remaining life of the high-voltage relay according to the total number of suction with load, the total number of cutting with load, the service life of the operation with load, and the number of suction with load, the number of cutting with load, and the service time with load of the high-voltage relay to be tested, comprises:
determining a single load actuation life loss coefficient of the high-voltage relay in each load working current interval according to the total load actuation times of the high-voltage relay in each load working current interval;
determining a single load cut-off life loss coefficient of the high-voltage relay in each load working current interval according to the total load cut-off times of the high-voltage relay in each load working current interval;
determining a life loss coefficient of the high-voltage relay in each load working current interval in unit time according to the load running life of the high-voltage relay in each load working current interval;
And determining the residual life proportion of the high-voltage relay according to the single load suction life loss coefficient, the single load cut-off life loss coefficient and the unit time life loss coefficient of each load working current interval, as well as the load suction times, the load cut-off times and the load working time length of the high-voltage relay to be tested.
3. The method according to claim 2, wherein determining the remaining life ratio of the high-voltage relay according to the single load pull-in life loss coefficient, the single load cut-off life loss coefficient, and the unit time life loss coefficient of each load operation current section, and the load pull-in number, the load cut-off number, and the load operation time length of the high-voltage relay to be tested, comprises:
for each load working current interval, determining the load suction life loss coefficient of the high-voltage relay in the load working current interval according to the single load suction life loss coefficient in the load working current interval and the load suction times of the high-voltage relay to be tested;
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested;
For each on-load working current interval, determining the on-load working time length life loss coefficient of the high-voltage relay under the on-load working current interval according to the unit time life loss coefficient under the on-load working current interval and the on-load working time length of the high-voltage relay to be tested;
and determining the residual life proportion of the high-voltage relay according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval.
4. The method of claim 3, wherein determining the remaining life ratio of the high voltage relay based on the on-load pull-in life loss coefficient, the on-load pull-out life loss coefficient, and the on-load on-time life loss coefficient for each on-load current interval comprises:
determining a total life loss coefficient of the high-voltage relay according to the load suction life loss coefficient, the load cut-off life loss coefficient and the load working time life loss coefficient in each load working current interval;
and determining the residual life proportion of the high-voltage relay according to the total life loss coefficient of the high-voltage relay.
5. A method of predicting the life of a high voltage relay according to claim 3, wherein for each load operation current interval, determining the load actuation life loss coefficient of the high voltage relay in the load operation current interval according to the single load actuation life loss coefficient in the load operation current interval and the load actuation number of the high voltage relay to be tested, comprises:
for each load working current interval, determining the load attraction life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load attraction life loss coefficient in the load working current interval and the load attraction times of the high-voltage relay to be tested;
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested, including:
for each load working current interval, determining the load cut-off life loss coefficient of the high-voltage relay in the load working current interval according to the product of the single load cut-off life loss coefficient in the load working current interval and the load cut-off times of the high-voltage relay to be tested;
For each on-load working current interval, determining the on-load working time life loss coefficient of the high-voltage relay under the on-load working current interval according to the unit time life loss coefficient under the on-load working current interval and the on-load working time of the high-voltage relay to be tested, including:
and for each loaded working current interval, determining the service life loss coefficient of the loaded working time length of the high-voltage relay in the loaded working current interval according to the product of the service life loss coefficient of the unit time in the loaded working current interval and the loaded working time length of the high-voltage relay to be tested.
6. The method of claim 2, wherein determining a single on-load pull-in life loss coefficient of the high-voltage relay in each on-load operating current interval based on a total number of on-load pull-in times of the high-voltage relay in each on-load operating current interval comprises:
taking the reciprocal of the total number of the on-load attraction of the high-voltage relay in each on-load working current interval to obtain the single on-load attraction service life loss coefficient of the high-voltage relay in each on-load working current interval;
determining a single load cut-off life loss coefficient of the high-voltage relay in each load working current interval according to the total load cut-off times of the high-voltage relay in each load working current interval, including:
Taking the reciprocal of the total number of the load cut-off times of the high-voltage relay in each load working current interval to obtain the single load cut-off life loss coefficient of the high-voltage relay in each load working current interval;
determining a life loss coefficient of the high-voltage relay in each band-load working current interval in unit time according to the band-load working life of the high-voltage relay in each band-load working current interval, wherein the method comprises the following steps:
and taking the reciprocal of the service life of the high-voltage relay in each load working current interval to obtain the service life loss coefficient of the high-voltage relay in each load working current interval in unit time.
7. A high voltage relay life prediction device, comprising:
the historical data determining module is used for determining the total number of on-load suction, the total number of on-load cutting-off and the service life of the on-load operation of the high-voltage relay in each on-load working current interval according to historical test data of the high-voltage relay;
the current data acquisition module is used for acquiring the on-load attracting times, the on-load cutting times and the on-load working time length of the to-be-detected high-voltage relay in each on-load working current interval;
the residual life determining module is used for determining the residual life of the high-voltage relay according to the total carrying and sucking times, the total carrying and cutting times and the service life of the carrying and running of the high-voltage relay to be tested, and the carrying and cutting times and the working time of the carrying.
8. The high voltage relay life prediction device according to claim 7, wherein the remaining life determination module includes:
the pull-in loss determining unit is used for determining a single load pull-in life loss coefficient of each load working current interval of the high-voltage relay according to the total load pull-in times of each load working current interval of the high-voltage relay;
the cut-off loss determining unit is used for determining a single load cut-off life loss coefficient of each load working current interval of the high-voltage relay according to the total load cut-off times of each load working current interval of the high-voltage relay;
the time loss determining unit is used for determining a unit time life loss coefficient of each load working current interval of the high-voltage relay according to the load working life of each load working current interval of the high-voltage relay;
the residual life determining unit is used for determining the residual life proportion of the high-voltage relay according to the single load suction life loss coefficient, the single load cut-off life loss coefficient and the unit time life loss coefficient of each load working current interval, as well as the load suction times, the load cut-off times and the load working time length of the high-voltage relay to be tested.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the high voltage relay life prediction method of any one of claims 1-6.
10. A computer readable storage medium storing computer instructions for causing a processor to implement the high voltage relay life prediction method of any one of claims 1-6 when executed.
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