CN117411389B - Overheat protection method for direct current motor and direct current motor - Google Patents
Overheat protection method for direct current motor and direct current motor Download PDFInfo
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- CN117411389B CN117411389B CN202311713964.6A CN202311713964A CN117411389B CN 117411389 B CN117411389 B CN 117411389B CN 202311713964 A CN202311713964 A CN 202311713964A CN 117411389 B CN117411389 B CN 117411389B
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000001012 protector Effects 0.000 claims abstract description 20
- 238000004804 winding Methods 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005856 abnormality Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
Classifications
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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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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0811—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for dc motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
-
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention belongs to the technical field of direct current motor temperature control, and particularly relates to a direct current motor overheat protection method and a direct current motor. The overheat protection method comprises the following steps: acquiring a temperature value T of the direct current motor, and calculating Wen Shengxie rate K of the direct current motor in a set time; comparing the temperature value T and Wen Shengxie value K with the set value respectively; and determining the operation parameters of the direct current motor according to the temperature values T and Wen Shengxie, the value K and the set value, wherein the operation parameters comprise at least one of rotating speed and power. The overheat protection method can discover the abnormality of too fast temperature rise of the direct current motor as soon as possible, reduce the rotating speed and the power of the direct current motor in advance, achieve the effects of cooling and radiating, avoid the condition that the temperature of the direct current motor reaches the action temperature of the thermal protector too early to stop the machine for protection, prolong the working time and ensure that the client can normally use the machine.
Description
Technical Field
The invention belongs to the technical field of direct current motor temperature control, and particularly relates to a direct current motor overheat protection method and a direct current motor.
Background
The direct current motor has the characteristics of low power consumption and small noise, and the direct current motor control system has good speed regulation performance, so that the direct current motor is widely applied to the field of air conditioners. Generally, a direct current motor is classified into two major types, one is an external driving direct current motor having only a direct current motor body, and the other is an internal driving direct current motor having a direct current motor body and a motor driving board, and in the running process of the direct current motor, both a winding coil of the motor body and an electronic component on the driving board generate heat, thereby causing the temperature of the direct current motor to rise. In order to prevent the winding coil or the electronic components on the driving board from being damaged by high temperature, overheat protection methods are generally designed on the direct current motor. The current overheat protection method of most direct current motors is to connect a resettable thermal protector in series in a winding coil, and when the temperature of the motor reaches a protection point, the thermal protector is disconnected, and the motor stops running; when the temperature of the motor is reduced to a reasonable temperature interval, the thermal protector is turned on, and the motor is restored to operate, but the overheat protection method has the defect that the direct current motor cannot work normally during overheat protection, so that related products cannot be used normally in the period of time, and user loss is easy to cause.
Disclosure of Invention
In view of this, the embodiment of the invention provides a method for overheat protection of a dc motor, which is used for solving the technical problem that the dc motor cannot continuously run during overheat protection. The overheat protection method comprises the following steps:
Acquiring a temperature value T of a direct current motor, and calculating Wen Shengxie rate K of the direct current motor in a set time;
comparing the temperature value T and the temperature rise slope value K with set values respectively;
And determining the operation parameters of the direct current motor according to the temperature value T, the temperature rise slope value K and the set value, wherein the operation parameters comprise at least one of rotating speed and power.
Further optionally, the determining the operation parameter of the dc motor according to the temperature value T, the temperature rise slope value K, and the set value includes:
The larger the interval of the temperature value T and the temperature rise slope value K is, the smaller the running rotating speed and the running power of the direct current motor are.
Further alternatively, the set value of the temperature value T includes a first temperature value T1, a second temperature value T2, and T2 > T1; the set value of Wen Shengxie values K comprises a first temperature rise slope value K1, a second temperature rise slope value K2 and a third temperature rise slope value K3, wherein K3 is more than K2 and more than K1.
Further optionally, the determining the operation parameter of the dc motor according to the temperature value T, the temperature rise slope value K, and the set value includes:
When T is less than or equal to T1 or T is more than or equal to T2-M, determining the operation parameters of the direct current motor according to the temperature value T; and/or determining the operation parameters of the direct current motor according to the temperature value T and the temperature rise slope value K when T1 is smaller than T and smaller than T2-M; wherein M is a preset temperature difference.
Further optionally, when T is less than or equal to T1 or T is more than or equal to T2-M, determining an operation parameter of the dc motor according to the temperature value T includes:
when T is less than or equal to T1, the direct current motor operates according to the preset rotating speed and power;
and when T is more than or equal to T2-M, stopping the operation of the direct current motor until T is reduced to be less than or equal to T1, and operating the direct current motor according to the preset rotating speed and power.
Further optionally, when T1 < T2-M, determining an operation parameter of the dc motor according to the temperature value T and the temperature rise slope value K includes:
When K is smaller than K1, the direct current motor operates according to the preset rotating speed and power;
when K1 is less than or equal to K2, the direct current motor operates according to the rotating speed which is initially set by S1% and the power which is initially set by S1%;
when K2 is less than or equal to K3, the direct current motor operates according to the rotating speed which is originally set by S2% and the power which is originally set by S2%;
When K is more than or equal to K3, the direct current motor operates at the rotation speed which is set at the beginning of S3% and the power which is set at the beginning of S3%, wherein S1 is more than S2 and less than S3.
Further alternatively, T1 is a recovery temperature of a resettable thermal protector connected in series with a winding coil of the dc motor, T2 is an operation temperature of the resettable thermal protector, m=5, s1=90, s2=70, s3=50.
An embodiment of the present invention provides an electronic device, including:
A memory for storing one or more computer instructions;
And a processor for invoking and executing computer instructions in the memory to implement the overheat protection method as described in the above embodiments.
The embodiment of the invention provides a direct current motor overheat protection device, which comprises a winding coil, a resettable thermal protector and a temperature sensing device, wherein the winding coil is connected with the resettable thermal protector in series, the temperature sensing device is arranged on the winding coil, and the temperature sensing device is used for detecting the temperature value of the direct current motor.
An embodiment of the present invention provides a dc motor, which adopts the overheat protection method described in the above embodiment, or has the electronic device described in the above embodiment, or has the overheat protection device described in the above embodiment.
Compared with the prior art, the invention has the following main beneficial effects:
the invention provides a direct current motor overheat protection method, which comprises the following steps: the temperature value T of the direct current motor is obtained, the Wen Shengxie value K of the direct current motor in the set time is calculated, the temperature values T and Wen Shengxie value K are respectively compared with the set value, and the operation parameters of the direct current motor are determined according to the values of the temperature values T and Wen Shengxie value K and the set value, wherein the operation parameters comprise at least one of rotating speed and power. The overheat protection method can discover the abnormality of too fast temperature rise of the direct current motor as soon as possible, reduce the rotating speed and the power of the direct current motor in advance, achieve the effects of reducing the temperature and radiating the heat, avoid the direct current motor from reaching the action temperature of the thermal protector too early and stopping the machine for protection, prolong the working time, ensure that the client can normally use the machine, avoid the direct current motor from reaching the action temperature of the thermal protector too early and stopping the machine for protection, prolong the working time and ensure that the client can normally use the machine. Meanwhile, the high-temperature operation time of the direct-current motor is shortened, the winding coil and electronic components on the driving plate can be prevented from being damaged by high temperature, and the service life of the direct-current motor is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.
FIG. 1 is a flow chart of an overheat protection method according to an embodiment of the present invention;
Fig. 2 is a flow chart of the temperature, motor speed and motor power combined protection according to an embodiment of the present invention.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.
Aiming at the defects that the direct current motor cannot work normally during overheat protection in the overheat protection period in the prior art, and related products cannot be used normally in the period, the application creatively discovers an overheat protection method combining the real-time temperature and the temperature rise slope of the direct current motor, namely, a temperature sensing device is added to the winding coil of the direct current motor on the basis of the scheme that the original winding coil is connected with a resettable thermal protector in series, so that the temperature of the motor can be monitored in real time. And transmitting the detected temperature signal to a motor driving plate for data processing analysis. According to the analysis result, the rotating speed and the power of the direct current motor are timely adjusted, so that the safe and reliable long-term operation of the direct current motor can be ensured, and the working time and the service life of the motor can be prolonged.
Example 1
The embodiment of the invention provides a direct current motor overheat protection method, as shown in fig. 1, the protection method comprises the following steps: obtaining a temperature value T of the direct current motor, calculating a Wen Shengxie value K of the direct current motor within a set time, detecting the temperature value T of the direct current motor once every deltat by a temperature sensing device, then transmitting the temperature values detected twice before and after to a driving plate of the direct current motor, calculating a Wen Shengxie value K= deltaT/deltat, for example, setting deltat to be 5 minutes, comparing the temperature values T and Wen Shengxie value K with a set value respectively, and determining an operation parameter of the direct current motor according to the values of the temperature values T and Wen Shengxie and the set value, wherein the operation parameter comprises at least one of rotating speed and power. The larger the interval of the temperature value T and Wen Shengxie value K is, the smaller the running rotating speed and power of the direct current motor are, so that the safe and reliable long-term operation of the direct current motor can be ensured.
Optionally, in one implementation manner of the present embodiment, as shown in fig. 2, the set value of the temperature value T includes a first temperature value T1 and a second temperature value T2, T1 is a recovery temperature of the resettable thermal protector connected in series with the winding coil of the dc motor, and T2 is an operation temperature of the resettable thermal protector, i.e., T2 > T1; the set value of Wen Shengxie values K comprises a first temperature rise slope value K1, a second temperature rise slope value K2 and a third temperature rise slope value K3, wherein K3 is more than K2 and more than K1.
Optionally, in an implementation manner of this embodiment, determining the operation parameter of the dc motor according to the values of the temperature value T, wen Shengxie, the value K and the set value includes:
When T is less than or equal to T1 or T is more than or equal to T2-M, determining the operation parameters of the direct current motor according to the temperature value T; and/or determining the operation parameters of the direct current motor according to the temperature value T and the Wen Shengxie value K when T1 is smaller than T and smaller than T2-M; wherein M is a preset temperature difference value, and M is E [4,6].
Optionally, in an implementation manner of the present embodiment, when T is less than or equal to T1 or T is less than or equal to T2-M, determining the operation parameter of the dc motor according to the temperature value T includes:
When T is less than or equal to T1, the direct current motor operates according to the preset rotating speed and power;
When T is more than or equal to T2-M, the direct current motor stops running until T is reduced to less than or equal to T1, and the direct current motor runs according to the preset rotating speed and power.
Optionally, in an implementation manner of the present embodiment, when T1 < T2-M, determining the operation parameter of the dc motor according to the temperature value T and Wen Shengxie value K includes:
When K is less than K1, the DC motor operates according to the preset rotating speed and power; when K1 is less than or equal to K2, the direct current motor operates according to the rotation speed which is originally set by S1% and the power which is originally set by S1%, and S1 epsilon [87,93]; when K2 is less than or equal to K3, the direct current motor operates according to the rotation speed which is originally set by S2 percent and the power which is originally set by S2 percent, and S2 epsilon [67,73]; when K is more than or equal to K3, the direct current motor operates according to the rotation speed which is initially set by S3% and the power which is initially set by S3%, and S3 epsilon [47,53], namely S1> S2> S3.
Optionally, in one implementation manner of the present embodiment, the preset temperature difference value m=5, when T1 < T2-5, and when K1 is less than or equal to K < K2, the dc motor operates at a rotation speed of 90% of the initial setting and at a power of 90% of the initial setting; when K2 is less than or equal to K3, the direct current motor operates at 70% of the preset rotating speed and 70% of the preset power; when K is more than or equal to K3, the direct current motor operates at 50% of the initial set rotating speed and 50% of the initial set power.
By the method, the abnormality of too fast temperature rise of the direct current motor can be found as soon as possible, the motor rotating speed and power are reduced in advance, the effects of cooling and heat dissipation are achieved, shutdown protection caused by the fact that the motor temperature reaches the action temperature of the thermal protector too early is avoided, working time is prolonged, and normal use of clients is ensured. Meanwhile, the high-temperature working time of the direct-current motor is shortened, the damage to the winding coil of the motor or the electronic element of the motor driving plate caused by high temperature is avoided, and the service life of the motor is prolonged.
It should be noted that: the temperature rise slope is combined with the real-time temperature of the direct current motor, the rotating speed and the power of the direct current motor are timely adjusted, and the purpose of overheat protection is achieved. This patent is applicable to the temperature rise slope setting value of difference, different judgement temperature range, the direct current motor operation rotational speed power proportion of difference.
Example 2
An embodiment of the present invention provides an electronic device, including:
A memory for storing one or more computer instructions;
The processor is configured to call and execute the computer instructions in the memory, so as to implement the overheat protection method according to the above embodiment, and in this embodiment, for specific description of the steps and effects executed by the processor, please refer to the related description in embodiment 1, which is not repeated herein.
Example 3
The embodiment of the invention provides a direct current motor overheat protection device, which comprises a winding coil, a resettable thermal protector and a temperature sensing device, wherein the winding coil is connected in series with the resettable thermal protector, the temperature sensing device is attached to the winding coil, and the temperature sensing device is connected with a driving plate of the direct current motor through a communication wire and is used for detecting the temperature value of the direct current motor.
Example 4
An embodiment of the present invention provides a dc motor, where the dc motor adopts the overheat protection method described in the foregoing embodiment, or has the electronic device described in the foregoing embodiment, or has the overheat protection device described in the foregoing embodiment.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that this disclosure is not limited to the particular arrangements, instrumentalities and methods of implementation described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (7)
1. A method for overheat protection of a direct current motor, the method comprising:
Acquiring a temperature value T of a direct current motor, and calculating Wen Shengxie rate K of the direct current motor in a set time;
comparing the temperature value T and the temperature rise slope value K with set values respectively;
determining the operation parameters of the direct current motor according to the temperature value T, the temperature rise slope value K and the set value, wherein the operation parameters comprise at least one of rotating speed and power;
the set value of the temperature value T comprises a first temperature value T1 and a second temperature value T2, wherein T2 is more than T1, T1 is the recovery temperature of the resettable thermal protector connected with the winding coil of the direct current motor in series, and T2 is the action temperature of the resettable thermal protector; the set value of Wen Shengxie values K comprises a first temperature rise slope value K1, a second temperature rise slope value K2 and a third temperature rise slope value K3, wherein K3 is more than K2 and more than K1;
The determining the operation parameters of the direct current motor according to the temperature value T, the temperature rise slope value K and the set value comprises the following steps:
When T is less than or equal to T1 or T is more than or equal to T2-M, determining the operation parameters of the direct current motor according to the temperature value T; when T1 is more than or equal to T2-M, determining the operation parameters of the direct current motor according to the temperature value T and the temperature rise slope value K; wherein M is a preset temperature difference value;
when T1 is smaller than T2-M, determining the operation parameters of the direct current motor according to the temperature value T and the temperature rise slope value K, wherein the operation parameters comprise:
When K is smaller than K1, the direct current motor operates according to the preset rotating speed and power;
when K1 is less than or equal to K2, the direct current motor operates according to the rotating speed which is initially set by S1% and the power which is initially set by S1%;
when K2 is less than or equal to K3, the direct current motor operates according to the rotating speed which is originally set by S2% and the power which is originally set by S2%;
when K is more than or equal to K3, the direct current motor operates according to the rotating speed which is originally set by S3 percent and the power which is originally set by S3 percent,
Wherein S1> S2> S3.
2. The method according to claim 1, wherein determining the operation parameters of the dc motor according to the temperature value T, the temperature rise slope value K, and the set value comprises:
The larger the interval of the temperature value T and the temperature rise slope value K is, the smaller the running rotating speed and the running power of the direct current motor are.
3. The method according to claim 1, wherein determining the operation parameter of the dc motor according to the temperature value T when T is equal to or less than T1 or T is equal to or greater than T2-M comprises:
when T is less than or equal to T1, the direct current motor operates according to the preset rotating speed and power;
and when T is more than or equal to T2-M, stopping the operation of the direct current motor until T is reduced to be less than or equal to T1, and operating the direct current motor according to the preset rotating speed and power.
4. The method for overheat protection of a DC motor according to claim 1, wherein,
M=5, s1=90, s2=70, s3=50.
5. An electronic device, the electronic device comprising:
A memory for storing one or more computer instructions;
a processor for invoking and executing computer instructions in said memory to implement the overheat protection method as recited in any one of claims 1-4.
6. The overheat protection device for the direct current motor is characterized in that the overheat protection device adopts the overheat protection method as claimed in any one of claims 1 to 4, the protection device comprises a winding coil, a resettable thermal protector and a temperature sensing device, the winding coil is connected with the resettable thermal protector in series, the temperature sensing device is arranged on the winding coil, and the temperature sensing device is used for detecting the temperature value of the direct current motor.
7. A direct current motor employing the overheat protection method as claimed in any one of claims 1 to 4, or having the electronic device as claimed in claim 5, or having the overheat protection means as claimed in claim 6.
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| CN202311713964.6A CN117411389B (en) | 2023-12-14 | 2023-12-14 | Overheat protection method for direct current motor and direct current motor |
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| JPH10210790A (en) * | 1997-01-27 | 1998-08-07 | Toyota Motor Corp | Overheat protector for power converter, inverter controller and inverter cooler for electric automobile having that function |
| JP2000032768A (en) * | 1998-07-09 | 2000-01-28 | Denso Corp | Overheat protector for load driver |
| JP2000083383A (en) * | 1998-09-03 | 2000-03-21 | Denso Corp | Overheat protection device for load drive equipment |
| KR100659313B1 (en) * | 2005-12-06 | 2006-12-19 | 삼성전자주식회사 | Driving apparatus of bldc motor |
| CN2912067Y (en) * | 2006-07-11 | 2007-06-13 | 许晓华 | Thermal protecting system for dynamo of air compressor |
| CN104377657A (en) * | 2014-12-11 | 2015-02-25 | 重庆七色实业有限公司 | Motor and overload protecting device thereof |
| CN106998170A (en) * | 2016-08-31 | 2017-08-01 | 南京奥联汽车电子技术有限公司 | Direct current generator method for excessive heating protection and implementation step based on feedback current |
| CN110356245A (en) * | 2019-07-26 | 2019-10-22 | 奇瑞汽车股份有限公司 | A kind of motor excess temperature protection method and device |
| CN112092630A (en) * | 2020-09-23 | 2020-12-18 | 北京车和家信息技术有限公司 | Motor over-temperature protection method and device, driving system and vehicle |
| CN114678837A (en) * | 2022-05-30 | 2022-06-28 | 中山大洋电机股份有限公司 | Motor overheating protection method |
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