CN-122014764-A - Electromagnetic reversing system of electromagnetic clutch and control method thereof

CN122014764ACN 122014764 ACN122014764 ACN 122014764ACN-122014764-A

Abstract

The invention discloses an electromagnetic reversing control method of an electromagnetic clutch, relates to the field of new energy power systems, and solves the technical problem that the separation or interruption of different power sources cannot be realized due to magnetization of a combined part of the existing electromagnetic clutch after a long power-on time. When the electromagnetic reversing controller receives a combination instruction signal of the system controller, working parameters of the electromagnetic clutch are obtained, and the working parameters are analyzed through an electromagnetic field calculation algorithm to judge whether the electromagnetic clutch meets reversing requirements. The invention also discloses an electromagnetic reversing control system of the electromagnetic clutch. The invention can effectively reduce the difficulty of separating the electromagnetic clutch.

Inventors

CHEN TAO
LIN YONGFA
OUYANG SHIKUN
QIN HUIRU
Kong Dele
Lai Pinlian
NONG ZHEN

Assignees

玉柴芯蓝新能源动力科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260130

Claims (10)

1. The electromagnetic reversing control method of the electromagnetic clutch is characterized in that when the electromagnetic reversing controller (3) receives a combination instruction signal of the system controller (1), working parameters of the electromagnetic clutch (5) are obtained, and the working parameters are analyzed through an electromagnetic field calculation algorithm to judge whether the electromagnetic clutch (5) meets reversing requirements or not.
2. The electromagnetic clutch electromagnetic commutation control method according to claim 1, wherein the electromagnetic field calculation algorithm includes an electromagnetic field intensity magnetizing calculation algorithm, a magnetic field accumulation time algorithm, and a magnetic field accumulation times calculation algorithm, and when the working parameters are analyzed by the electromagnetic field calculation algorithm, the working parameters are analyzed by selecting a calculation algorithm from the electromagnetic field intensity magnetizing calculation algorithm, the magnetic field accumulation time algorithm, and the magnetic field accumulation times calculation algorithm by a calibration method.
3. The method for controlling the electromagnetic commutation of the electromagnetic clutch according to claim 1, wherein the method for selecting the calculation algorithm from the electromagnetic field intensity magnetizing calculation algorithm, the magnetic field accumulation time algorithm and the magnetic field accumulation times calculation algorithm by the calibration method is, Selecting any one algorithm of the electromagnetic field intensity magnetizing calculation algorithm, the magnetic field accumulation time algorithm and the magnetic field accumulation times calculation algorithm as a calculation algorithm for analyzing working parameters; or selecting any one algorithm of a magnetic field intensity magnetizing calculation algorithm, a magnetic field accumulation time algorithm and a magnetic field accumulation times calculation algorithm to analyze the working parameters, and when the working parameters are analyzed, firstly executing the magnetic field intensity magnetizing calculation algorithm, and when the judgment result is that the reversing requirement of the electromagnetic clutch is not met, executing the other calculation algorithm.
4. The electromagnetic clutch electromagnetic commutation control method according to claim 1, wherein the electromagnetic field intensity magnetizing calculation algorithm is that the working parameters of the electromagnetic clutch (5) comprise magnetic induction intensity, magnetic path length, number of turns of an electromagnetic coil, current of the electromagnetic coil, electromagnetic induction intensity saturation value of a combined end face tooth of the electromagnetic clutch, electromagnetic induction intensity saturation coefficient and conversion coefficient of temperature to magnetic field; calculating to obtain the magnetic field intensity generated by the electromagnetic coil according to the magnetic induction intensity, the magnetic path length, the number of turns of the electromagnetic coil and the current of the electromagnetic coil; And calculating an electromagnetic induction intensity saturation value according to the electromagnetic induction intensity saturation value of the electromagnetic clutch combined end face teeth, the electromagnetic induction intensity saturation coefficient and the conversion coefficient of temperature to a magnetic field, comparing the magnetic field intensity generated by the electromagnetic coil with the electromagnetic induction intensity saturation value, and judging that the reversing requirement of the electromagnetic clutch (5) is met when the magnetic field intensity generated by the electromagnetic coil is larger than the electromagnetic induction intensity saturation value.
5. The electromagnetic clutch electromagnetic commutation control method of claim 4, wherein the expression for calculating the strength of the magnetic field generated by the electromagnetic coil is: ; Wherein, H fe is magnetic induction intensity, l m is magnetic path length, N is number of turns of electromagnetic coil, and I is electromagnetic coil current.
6. The method for controlling electromagnetic commutation of an electromagnetic clutch according to claim 4, wherein the electromagnetic induction intensity saturation value is calculated by the expression, ; Wherein a s is an electromagnetic induction intensity saturation value, B s is an electromagnetic induction intensity saturation value of an electromagnetic clutch combined end face tooth, gamma is an electromagnetic induction intensity saturation coefficient, and beta is a conversion coefficient of temperature to a magnetic field.
7. The electromagnetic reversing control method of an electromagnetic clutch according to claim 1, wherein the magnetic field accumulation time algorithm is that the working parameters include the combination time of the electromagnetic clutch (5), a time recording period is set, the combination time in the time recording period is obtained, the combination time in the time recording period and the combination time in the previous time recording period are accumulated to obtain a combination accumulation total time T, a theoretical magnetization saturation time accumulation value T s is set, the combination accumulation total time T is compared with the theoretical magnetization saturation time accumulation value T s , and when the combination accumulation total time T is larger than the theoretical magnetization saturation time accumulation value T s , it is determined that the reversing requirement of the electromagnetic clutch (5) is met.
8. The electromagnetic reversing control method of an electromagnetic clutch according to claim 1, wherein the magnetic field accumulation frequency algorithm is that the working parameters include the combination frequency of the electromagnetic clutch (5), a frequency recording period is set, the combination frequency in the frequency recording period is obtained, the combination frequency in the frequency recording period is accumulated to obtain the sum of the combination frequency in the frequency recording period, the sum of the combination frequency in the frequency recording period and the sum of the combination frequency in the last frequency recording period are added to obtain a sum of the combination frequency n, a theoretical magnetizing saturation frequency accumulated value n s is set, the sum of the combination frequency n is compared with a theoretical magnetizing saturation frequency accumulated value n s , and when the sum of the combination frequency n is larger than the theoretical magnetizing saturation frequency accumulated value n s , the reversing requirement of the electromagnetic clutch (5) is judged to be met.
9. The electromagnetic clutch electromagnetic commutation control method of claim 1, wherein the electromagnetic clutch engagement state includes a first current flow state in which current flows from a first terminal (7) of the electromagnetic coil and a second current flow state in which current flows from a second terminal (8) of the electromagnetic coil, and current flows from the first terminal (7) of the electromagnetic coil; When the reversing requirement of the electromagnetic clutch (5) is judged to be met, an initial state of current flow is obtained, when the initial state is a first current flow state, the first current flow state is switched to a second current flow state, and when the initial state is a second current flow state, the second current flow state is switched to the first current flow state.
10. An electromagnetic reversing system of an electromagnetic clutch is characterized in that the system comprises, A system controller (1) for outputting an operation instruction signal of the electromagnetic clutch (5); -an electromagnetic commutation controller (3) for receiving said operating command signal and applying an electromagnetic clutch electromagnetic commutation control method according to any one of the preceding claims 1-9 for analyzing operating parameters of an electromagnetic clutch (5) and performing an electromagnetic commutation operation based on the analysis result.

Description

Electromagnetic reversing system of electromagnetic clutch and control method thereof Technical Field The invention relates to the field of new energy power systems, in particular to an electromagnetic reversing system of an electromagnetic clutch and a control method thereof. Background In the new energy automobile system, the electromagnetic clutch can be applied to power transmission superposition transmission of different power sources of the power system, but after the electromagnetic clutch is electrified for a long time, the combination part of the electromagnetic clutch can be magnetized under the action of electromagnetic force or electromagnetic field, so that the combination part body has magnetism. The magnetization principle is that when the magnetic material is not magnetized, the magnetic domain direction inside the magnetic material is disordered, and the whole magnetic material is not magnetized. However, when an external magnetic field is applied, the magnetic domains gradually turn to coincide with the direction of the external magnetic field. As the strength of the external magnetic field increases, more and more magnetic domains turn to the direction of the external magnetic field, resulting in a gradual increase in the magnetization of the magnetic material. When the external magnetic field strength increases to a certain extent, the increase of the magnetization becomes slow, and eventually reaches a maximum value, which is a saturated magnetization state. The residual magnetism and the coercive force of the saturated and magnetized magnetic material are obviously improved. The remanence is the magnetism that the magnetic material still retains after the external magnetic field is removed, while the coercive force is the reverse magnetic field strength that needs to be applied to reduce the magnetization of the magnetic material to zero. The magnetic property of the combined part body can cause the difficulty in separating magnetized parts when the electromagnetic clutch is controlled to separate, so that the situation that different power sources are separated or interrupted is not realized. Disclosure of Invention The invention aims to solve the technical problems of the prior art, provides an electromagnetic reversing system of an electromagnetic clutch and a control method thereof, and solves the technical problems that the separation or interruption of different power sources cannot be realized due to magnetization of a combined part after the current is electrified for a long time. The invention relates to an electromagnetic reversing control method of an electromagnetic clutch, which comprises the steps that when an electromagnetic reversing controller receives a combined instruction signal of a system controller, working parameters of the electromagnetic clutch are obtained, and the working parameters are analyzed through an electromagnetic field calculation algorithm to judge whether the electromagnetic clutch meets reversing requirements. The electromagnetic field calculation algorithm comprises an electromagnetic field intensity magnetizing calculation algorithm, a magnetic field accumulation time algorithm and a magnetic field accumulation times calculation algorithm, and when the electromagnetic field calculation algorithm analyzes the working parameters, the electromagnetic field intensity magnetizing calculation algorithm, the magnetic field accumulation time algorithm and the magnetic field accumulation times calculation algorithm are selected from the electromagnetic field intensity magnetizing calculation algorithm, the magnetic field accumulation time algorithm and the magnetic field accumulation times calculation algorithm in a calibrated mode to analyze the working parameters. Further, the method for selecting the calculation algorithm from the electromagnetic field intensity magnetizing calculation algorithm, the magnetic field accumulation time algorithm and the magnetic field accumulation times calculation algorithm by the calibration mode comprises the following steps of, Selecting any one algorithm of the electromagnetic field intensity magnetizing calculation algorithm, the magnetic field accumulation time algorithm and the magnetic field accumulation times calculation algorithm as a calculation algorithm for analyzing working parameters; or selecting any one algorithm of a magnetic field intensity magnetizing calculation algorithm, a magnetic field accumulation time algorithm and a magnetic field accumulation times calculation algorithm to analyze the working parameters, and when the working parameters are analyzed, firstly executing the magnetic field intensity magnetizing calculation algorithm, and when the judgment result is that the reversing requirement of the electromagnetic clutch is not met, executing the other calculation algorithm. Further, the electromagnetic field intensity magnetizing calculation algorithm is that the working parameters of the