CN107787059B - Heating method for high-temperature protection of induction cooker and induction cooker - Google Patents
Heating method for high-temperature protection of induction cooker and induction cooker Download PDFInfo
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- CN107787059B CN107787059B CN201610716568.2A CN201610716568A CN107787059B CN 107787059 B CN107787059 B CN 107787059B CN 201610716568 A CN201610716568 A CN 201610716568A CN 107787059 B CN107787059 B CN 107787059B
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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- H05B6/00—Heating by electric, magnetic or electromagnetic fields
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Abstract
The invention provides a heating method for high-temperature protection of an induction cooker and the induction cooker, wherein the heating method comprises the following steps: detecting the temperature of an IGBT of the induction cooker, and controlling the induction cooker to continuously heat when the detected temperature is lower than a first preset temperature; when the temperature of the induction cooker IGBT is increased to a second preset temperature, controlling the induction cooker to perform interval heating according to a preset start-stop period; when the temperature of the induction cooker IGBT is reduced to the first preset temperature, controlling the induction cooker to continuously heat; when the temperature of the induction cooker IGBT is increased to a third preset temperature, controlling the induction cooker to stop working; the third preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the first preset temperature. The heating method for high-temperature protection of the induction cooker and the induction cooker provided by the invention can avoid triggering E6 fault when the induction cooker works, thereby improving the use experience of a user.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a heating method for high-temperature protection of an induction cooker and the induction cooker.
Background
Induction cookers have been used by more and more households as daily household appliances due to their convenience and good heating efficiency. When the induction cooker is used for heating, the working power of the induction cooker can be up to kilowatt, so that the induction cooker can possibly enter an overheating state during working. If the induction cooker works in an overheating state for a long time, the wires and hardware inside the induction cooker are likely to be damaged.
Currently, in order to avoid the operation of the induction cooker in an overheat state, a temperature protection threshold value can be generally set for the induction cooker IGBT. When the current temperature of the induction cooker IGBT reaches the temperature protection threshold value, the induction cooker can be considered to be in an overheat state, and therefore the induction cooker can stop heating.
In a specific implementation, a protection program may be generally set in the electromagnetic oven, and the code number of the protection program may be E6. When the current temperature of the induction cooker IGBT reaches the temperature protection threshold value, the E6 fault can be displayed at the display interface on the induction cooker in a delayed mode for about 1 second, and heating is stopped.
In general, the E6 fault cannot be automatically removed, and the E6 fault cannot be removed only after the user powers off and restarts the induction cooker, so that the induction cooker is reused, which seriously affects the user experience.
Disclosure of Invention
The embodiment of the invention aims to provide a heating method for high-temperature protection of an induction cooker and the induction cooker, which can avoid triggering E6 fault when the induction cooker works, thereby improving the use experience of a user.
In order to achieve the above object, an aspect of the present invention provides a heating method for high temperature protection of an induction cooker, the method comprising: detecting the temperature of an IGBT of the induction cooker, and controlling the induction cooker to continuously heat when the detected temperature is lower than a first preset temperature; when the temperature of the induction cooker IGBT is increased to a second preset temperature, controlling the induction cooker to perform interval heating according to a preset start-stop period; when the temperature of the induction cooker IGBT is reduced to the first preset temperature, controlling the induction cooker to continuously heat; when the temperature of the induction cooker IGBT is increased to a third preset temperature, controlling the induction cooker to stop working; the third preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the first preset temperature.
Further, detecting the temperature of the induction cooker IGBT specifically includes: acquiring the heat dissipation temperature of the induction cooker IGBT, and calculating the current temperature rise of the induction cooker IGBT; and determining the sum of the heat dissipation temperature and the temperature rise as the detected temperature of the induction cooker IGBT.
Further, the current temperature rise of the induction cooker IGBT is calculated according to the following formula:
ΔT＝Rj·[(r0·I2+u0·I)+(Eon+Eoff)·f+EonD·f]
wherein Δ T represents the current temperature rise of the induction cooker IGBT, RjRepresents the total thermal resistance, r, of the IGBT0Represents the total internal resistance of the IGBT, I represents the heating current of the induction cooker, u0Represents the operating voltage of the IGBT, EonRepresents the turn-on loss of the IGBT, EoffRepresenting the turn-off loss of the IGBT, f representing the loss factor, EonDAnd representing the turn-on loss of the diode inside the IGBT.
Further, the controlling the induction cooker to continuously heat specifically includes: detecting the current variable quantity of the panel temperature of the induction cooker; when the current variable quantity is smaller than a preset threshold value, determining the power quantity to be increased according to the difference value between the current variable quantity and the preset threshold value; and adjusting the current heating power according to the power quantity to be improved, and continuously heating by using the adjusted heating power.
Further, the method further comprises: when the current variable quantity is larger than or equal to a preset threshold value, determining the power quantity to be reduced according to the difference value between the current variable quantity and the preset threshold value; and adjusting the current heating power according to the power amount to be reduced, and continuously heating by using the adjusted heating power.
Further, the preset start-stop period is determined by a driving signal with a preset duty ratio; correspondingly, controlling the induction cooker to perform interval heating according to a preset start-stop period specifically comprises: and driving the induction cooker IGBT by using the driving signal with the preset duty ratio so as to control the induction cooker to carry out interval heating according to a preset start-stop period.
In order to achieve the above object, another aspect of the present invention further provides an induction cooker, including: the temperature detection unit is used for detecting the temperature of the induction cooker IGBT; the continuous heating unit is used for controlling the induction cooker to continuously heat when the detected temperature is lower than a first preset temperature; when the temperature of the induction cooker IGBT is reduced to the first preset temperature, controlling the induction cooker to continuously heat; the interval heating unit is used for controlling the induction cooker to carry out interval heating according to a preset start-stop period when the temperature of the induction cooker IGBT is increased to a second preset temperature; the overheat protection unit is used for controlling the induction cooker to stop working when the temperature of the induction cooker IGBT is increased to a third preset temperature; the third preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the first preset temperature.
Further, the temperature detection unit specifically includes: the temperature acquisition module is used for acquiring the heat dissipation temperature of the induction cooker IGBT and calculating the current temperature rise of the induction cooker IGBT; and the temperature determining module is used for determining the sum of the heat dissipation temperature and the temperature rise as the detected temperature of the induction cooker IGBT.
Further, the temperature obtaining module calculates the current temperature rise of the induction cooker IGBT according to the following formula:
ΔT＝Rj·[(r0·I2+u0·I)+(Eon+Eoff)·f+EonD·f]
wherein Δ T represents the current temperature rise of the induction cooker IGBT, RjRepresents the total thermal resistance, r, of the IGBT0Represents the total internal resistance of the IGBT, I represents the heating current of the induction cooker, u0Represents the operating voltage of the IGBT, EonRepresents the turn-on loss of the IGBT, EoffRepresenting the turn-off loss of the IGBT, f representing the loss factor, EonDAnd representing the turn-on loss of the diode inside the IGBT.
Further, the continuous heating unit specifically includes: the panel temperature variation detection module is used for detecting the current variation of the panel temperature of the induction cooker; the power quantity determining module is used for determining the power quantity to be increased according to the difference value between the current variable quantity and a preset threshold when the current variable quantity is smaller than the preset threshold; and the power adjusting module is used for adjusting the current heating power according to the power quantity to be improved and continuously heating by using the adjusted heating power.
According to the heating method for high-temperature protection of the induction cooker and the induction cooker, the three preset temperatures with different sizes are set, and the induction cooker can be controlled to be heated continuously or heated at intervals according to the preset start-stop period according to the size relation between the current temperature of the induction cooker IGBT and the three preset temperatures, so that the phenomenon that the induction cooker is in a continuously heating working state for a long time and the temperature is overhigh can be avoided. In addition, if the temperature of the induction cooker is abnormal, the induction cooker can be controlled to stop working, and internal circuits and hardware of the induction cooker are prevented from being damaged. Therefore, the heating method for high-temperature protection of the induction cooker and the induction cooker provided by the embodiment of the invention can avoid triggering the E6 fault when the induction cooker works, so that the use experience of a user is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and are not intended to limit the invention. In the drawings:
FIG. 1 is a flow chart of a heating method for protecting an induction cooker from high temperature according to an embodiment of the present disclosure;
fig. 2 is a functional block diagram of an induction cooker according to an embodiment of the present disclosure.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application shall fall within the scope of protection of the present application.
One embodiment of the application provides a heating method for high-temperature protection of an induction cooker. Please refer to fig. 1. The method may include the following steps.
Step S1: the temperature of the IGBT of the induction cooker is detected, and when the detected temperature is lower than a first preset temperature, the induction cooker is controlled to continuously heat.
In this embodiment, the temperature of the induction cooker IGBT may be the temperature of an IGBT bulb, so that the temperature of the induction cooker IGBT can be obtained by detecting the temperature of the IGBT bulb.
In one embodiment of the present application, in order to make the result of the temperature detection more accurate, the temperature of the induction cooker IGBT may be calculated by the heat dissipation temperature of the induction cooker IGBT and the current temperature rise. Specifically, in the present embodiment, the heat dissipation temperature of the induction cooker IGBT may be acquired, the current temperature rise of the induction cooker IGBT may be calculated, and then the sum of the heat dissipation temperature and the temperature rise may be determined as the detected temperature of the induction cooker IGBT.
In this embodiment, the heat dissipation temperature may be a temperature of the radiator of the IGBT of the induction cooker, and the current temperature rise may be determined according to internal parameters and operating parameters of the IGBT. The internal parameters may include total thermal resistance, total internal resistance, turn-off loss, turn-on loss, loss factor of the IGBT, and turn-on loss of the IGBT internal diode. The operating parameters may include a heating current of the induction cooker and an operating voltage of the IGBT.
In the present embodiment, the current temperature rise of the induction cooker IGBT may be calculated according to the following formula:
ΔT＝Rj·[(r0·I2+u0·I)+(Eon+Eoff)·f+EonD·f]
wherein Δ T represents the current temperature rise of the induction cooker IGBT, RjRepresents the total thermal resistance, r, of the IGBT0Represents the total internal resistance of the IGBT, I represents the heating current of the induction cooker, u0Represents the operating voltage of the IGBT, EonRepresents the turn-on loss of the IGBT, EoffRepresenting the turn-off loss of the IGBT, f representing the loss factor, EonDAnd representing the turn-on loss of the diode inside the IGBT.
In this way, after the current temperature rise of the induction cooker IGBT is obtained through calculation, the current temperature rise and the heat dissipation temperature can be superposed, so that the current temperature of the induction cooker IGBT can be obtained.
In this embodiment, the first preset temperature may be an initial temperature at which the induction cooker normally operates. For example, the first preset temperature may be 30 ℃. When the detected temperature is lower than the first preset temperature, the current temperature of the induction cooker is lower, and the induction cooker can be controlled to continuously heat.
In this embodiment, the controlling the induction cooker to continuously heat may include heating at a preset power. In addition, in order to improve the heating efficiency, the heating power of the induction cooker can be adjusted in real time. Specifically, in the present embodiment, the current amount of change in the panel temperature of the induction cooker may be detected. The current variation of the panel temperature may be detected within a preset time period. For example, the amount of change in the panel temperature may be detected within 10 seconds.
In the present embodiment, a threshold value of temperature change may be set in advance, and the threshold value may indicate a change value of the temperature of the induction cooker during normal heating. After the threshold is set, the relationship between the detected amount of change in the panel temperature and a preset threshold may be compared. And when the current variation is smaller than a preset threshold value, the current heating power of the induction cooker is smaller, so that the temperature of the panel is slowly increased. In this case, the amount of power to be increased may be determined according to a difference between the current amount of change and the preset threshold. Specifically, the larger the difference value, the lower the current heating power of the induction cooker, and the larger the amount of power that needs to be increased. In this embodiment, the amount of power to be increased may be proportional to the difference, and the relationship between the two may be determined by the following formula:
ΔP＝σ·Δt
where Δ P denotes the power amount to be increased, σ denotes a conversion coefficient for converting a temperature difference value to a power amount, and Δ t denotes a difference between the current variation amount and the preset threshold value.
In this way, after the power amount to be increased is determined, the current heating power can be adjusted according to the power amount to be increased, and continuous heating can be performed by using the adjusted heating power. Specifically, the determined power amount may be increased on the basis of the current heating power, so as to increase the heating power of the induction cooker to increase the panel temperature more quickly.
In this embodiment, when the current variation is greater than or equal to the preset threshold, it indicates that the current heating power of the induction cooker is relatively high, so that the temperature of the panel rises too fast. In order to avoid the overload operation of the induction cooker, the current heating power of the induction cooker can be properly reduced. Specifically, the power amount to be reduced may be determined according to a difference between the current variation amount and the preset threshold. Likewise, the greater the difference, the greater the amount of power to be reduced. The amount of power to be reduced and the difference may also satisfy a proportional relationship. In this way, after the power amount to be reduced is determined, the current heating power can be adjusted according to the power amount to be reduced, and continuous heating can be performed by using the adjusted heating power. Specifically, the determined amount of power may be reduced on the basis of the current heating power, thereby slowing down the speed of the rise in the panel temperature.
Step S2: and when the temperature of the induction cooker IGBT is increased to a second preset temperature, controlling the induction cooker to perform interval heating according to a preset start-stop period.
In this embodiment, the second preset temperature is higher than the first preset temperature. When the temperature of the induction cooker IGBT rises to a second preset temperature, the induction cooker IGBT indicates that the current induction cooker is in a high-temperature working state, and if the heating is continued, the induction cooker IGBT may be in an overheating state to trigger the E6 fault. Therefore, in the present embodiment, when the temperature of the induction cooker IGBT rises to the second preset temperature, the induction cooker may be controlled to perform interval heating according to a preset on-off period. Therefore, the temperature of the induction cooker IGBT can be kept in a state slightly lower than the second preset temperature or can be gradually reduced by adopting an interval heating mode, so that the induction cooker is prevented from working in an overheating state.
In this embodiment, the preset on-off period may be determined by a driving signal having a preset duty ratio. The drive signal may be a square wave signal, which may have a duty cycle of, for example, 50%, i.e., both high and low levels are equal in duration. When the driving signal is at a high level, the induction cooker can be in a heating state; when the driving signal is at a low level, the induction cooker may be in a heating stop state. Of course, in an actual application scenario, the duty ratio of the driving signal can be flexibly adjusted according to the requirement on the temperature of the electromagnetic oven. Therefore, the electromagnetic oven IGBT can be driven by the driving signal with the preset duty ratio to control the electromagnetic oven to carry out interval heating according to the preset start-stop period.
Step S3: and when the temperature of the induction cooker IGBT is reduced to the first preset temperature, controlling the induction cooker to continuously heat.
In this embodiment, when the induction cooker is controlled to perform interval heating, the temperature of the induction cooker IGBT may be continuously reduced, and then when the temperature is reduced to the first preset temperature, the induction cooker may be controlled to perform continuous heating, so as to ensure that the temperature of the induction cooker is not too low. Specifically, the manner of continuous heating is the same as that described in step S1, and is not described here again.
Step S4: and when the temperature of the induction cooker IGBT is increased to a third preset temperature, controlling the induction cooker to stop working.
In this embodiment, the third preset temperature is higher than the second preset temperature. When the induction cooker is controlled to perform interval heating, the temperature of the induction cooker IGBT can be continuously increased due to the working failure of the induction cooker, so that the third preset temperature is reached. The third preset temperature may indicate that the induction cooker is currently in an overheat state, and if the induction cooker is continuously in a heating state, internal circuits and hardware of the induction cooker may be damaged. Therefore, when the temperature of the induction cooker IGBT is increased to a third preset temperature, the induction cooker can be controlled to stop working, and the E6 fault is displayed in the display interface on the induction cooker.
In this embodiment, the temperature values of the first preset temperature, the second preset temperature and the third preset temperature may range from-20 ℃ to 150 ℃.
An embodiment of the application also provides an induction cooker. Please refer to fig. 2. The induction cooker may include:
a temperature detection unit 100 for detecting the temperature of the induction cooker IGBT;
the continuous heating unit 200 is used for controlling the induction cooker to continuously heat when the detected temperature is lower than a first preset temperature; when the temperature of the induction cooker IGBT is reduced to the first preset temperature, controlling the induction cooker to continuously heat;
the interval heating unit 300 is used for controlling the induction cooker to perform interval heating according to a preset start-stop period when the temperature of the induction cooker IGBT is increased to a second preset temperature;
the overheating protection unit 400 is used for controlling the induction cooker to stop working when the temperature of the induction cooker IGBT is increased to a third preset temperature;
the third preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the first preset temperature.
In an embodiment of the present application, the temperature detecting unit 100 specifically includes:
the temperature acquisition module is used for acquiring the heat dissipation temperature of the induction cooker IGBT and calculating the current temperature rise of the induction cooker IGBT;
and the temperature determining module is used for determining the sum of the heat dissipation temperature and the temperature rise as the detected temperature of the induction cooker IGBT.
In an embodiment of the present application, the temperature obtaining module calculates a current temperature rise of the induction cooker IGBT according to the following formula:
ΔT＝Rj·[(r0·I2+u0·I)+(Eon+Eoff)·f+EonD·f]
wherein Δ T represents the current temperature rise of the induction cooker IGBT, RjRepresents the total thermal resistance, r, of the IGBT0Represents the total internal resistance of the IGBT, I represents the heating current of the induction cooker, u0Represents the operating voltage of the IGBT, EonRepresents the turn-on loss of the IGBT, EoffRepresenting the turn-off loss of the IGBT, f representing the loss factor, EonDAnd representing the turn-on loss of the diode inside the IGBT.
In one embodiment of the present application, the continuous heating unit 200 specifically includes:
the panel temperature variation detection module is used for detecting the current variation of the panel temperature of the induction cooker;
the power quantity determining module is used for determining the power quantity to be increased according to the difference value between the current variable quantity and a preset threshold when the current variable quantity is smaller than the preset threshold;
and the power adjusting module is used for adjusting the current heating power according to the power quantity to be improved and continuously heating by using the adjusted heating power.
It should be noted that the specific implementation manner of each functional module is consistent with the description in steps S1 to S4, and is not described herein again.
According to the heating method for high-temperature protection of the induction cooker and the induction cooker, the three preset temperatures with different sizes are set, and the induction cooker can be controlled to be heated continuously or heated at intervals according to the preset start-stop period according to the size relation between the current temperature of the induction cooker IGBT and the three preset temperatures, so that the phenomenon that the induction cooker is in a continuously heating working state for a long time and the temperature is overhigh can be avoided. In addition, if the temperature of the induction cooker is abnormal, the induction cooker can be controlled to stop working, and internal circuits and hardware of the induction cooker are prevented from being damaged. Therefore, the heating method for high-temperature protection of the induction cooker and the induction cooker provided by the embodiment of the invention can avoid triggering the E6 fault when the induction cooker works, so that the use experience of a user is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the embodiment of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A heating method for high-temperature protection of an induction cooker is characterized by comprising the following steps:
detecting the temperature of an IGBT of the induction cooker, and controlling the induction cooker to continuously heat when the detected temperature is lower than a first preset temperature;
when the temperature of the induction cooker IGBT is increased to a second preset temperature, controlling the induction cooker to perform interval heating according to a preset start-stop period;
when the temperature of the induction cooker IGBT is reduced to the first preset temperature, controlling the induction cooker to continuously heat;
when the temperature of the induction cooker IGBT is increased to a third preset temperature, controlling the induction cooker to stop working;
wherein the third preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the first preset temperature;
the step of controlling the induction cooker to continuously heat specifically comprises the following steps:
detecting the current variable quantity of the panel temperature of the induction cooker;
when the current variable quantity is smaller than a preset threshold value, determining the power quantity to be increased according to the difference value between the current variable quantity and the preset threshold value;
and adjusting the current heating power according to the power quantity to be improved, and continuously heating by using the adjusted heating power.
2. The heating method according to claim 1, wherein detecting the temperature of the induction cooker IGBT specifically comprises:
acquiring the heat dissipation temperature of the induction cooker IGBT, and calculating the current temperature rise of the induction cooker IGBT;
and determining the sum of the heat dissipation temperature and the temperature rise as the detected temperature of the induction cooker IGBT.
3. The heating method according to claim 2, wherein the current temperature rise of the induction cooker IGBT is calculated according to the following formula:
ΔT＝Rj·[(r0·I2+u0·I)+(Eon+Eoff)·f+EonD·f]
wherein Δ T represents the current temperature rise of the induction cooker IGBT, RjRepresents the total thermal resistance, r, of the IGBT0Represents the total internal resistance of the IGBT, I represents the heating current of the induction cooker, u0Represents the operating voltage of the IGBT, EonRepresents the turn-on loss of the IGBT, EoffRepresenting the turn-off loss of the IGBT, f representing the loss factor, EonDAnd representing the turn-on loss of the diode inside the IGBT.
4. The heating method according to claim 1, further comprising:
when the current variable quantity is larger than or equal to a preset threshold value, determining the power quantity to be reduced according to the difference value between the current variable quantity and the preset threshold value;
and adjusting the current heating power according to the power amount to be reduced, and continuously heating by using the adjusted heating power.
5. The heating method according to claim 1, wherein the preset on-off period is determined by a driving signal having a preset duty cycle;
correspondingly, controlling the induction cooker to perform interval heating according to a preset start-stop period specifically comprises:
and driving the induction cooker IGBT by using the driving signal with the preset duty ratio so as to control the induction cooker to carry out interval heating according to a preset start-stop period.
6. An induction cooker, characterized in that it comprises:
the temperature detection unit is used for detecting the temperature of the induction cooker IGBT;
the continuous heating unit is used for controlling the induction cooker to continuously heat when the detected temperature is lower than a first preset temperature; when the temperature of the induction cooker IGBT is reduced to the first preset temperature, controlling the induction cooker to continuously heat;
the interval heating unit is used for controlling the induction cooker to carry out interval heating according to a preset start-stop period when the temperature of the induction cooker IGBT is increased to a second preset temperature;
the overheat protection unit is used for controlling the induction cooker to stop working when the temperature of the induction cooker IGBT is increased to a third preset temperature;
wherein the third preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the first preset temperature;
the continuous heating unit specifically comprises:
the panel temperature variation detection module is used for detecting the current variation of the panel temperature of the induction cooker;
the power quantity determining module is used for determining the power quantity to be increased according to the difference value between the current variable quantity and a preset threshold when the current variable quantity is smaller than the preset threshold;
and the power adjusting module is used for adjusting the current heating power according to the power quantity to be improved and continuously heating by using the adjusted heating power.
7. The induction cooker according to claim 6, wherein the temperature detection unit specifically comprises:
the temperature acquisition module is used for acquiring the heat dissipation temperature of the induction cooker IGBT and calculating the current temperature rise of the induction cooker IGBT;
and the temperature determining module is used for determining the sum of the heat dissipation temperature and the temperature rise as the detected temperature of the induction cooker IGBT.
8. The induction cooker according to claim 7, wherein the temperature obtaining module calculates the current temperature rise of the induction cooker IGBT according to the following formula:
ΔT＝Rj·[(r0·I2+u0·I)+(Eon+Eoff)·f+EonD·f]
wherein Δ T represents the current temperature rise of the induction cooker IGBT, RjRepresents the total thermal resistance, r, of the IGBT0Represents the total internal resistance of the IGBT, I represents the heating current of the induction cooker, u0Represents the operating voltage of the IGBT, EonRepresents the turn-on loss of the IGBT, EoffRepresenting the turn-off loss of the IGBT, f representing the loss factor, EonDAnd representing the turn-on loss of the diode inside the IGBT.
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| CN104918342A (en) * | 2014-03-14 | 2015-09-16 | 美的集团股份有限公司 | Electromagnetic heating device and control assembly and control method thereof |
| CN105329105A (en) * | 2014-07-30 | 2016-02-17 | 比亚迪股份有限公司 | Motor controller, IGBT over-temperature protection method and apparatus for same |
| CN105605631A (en) * | 2016-01-21 | 2016-05-25 | 浙江绍兴苏泊尔生活电器有限公司 | Heating control method for induction cooker and induction cooker |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918342A (en) * | 2014-03-14 | 2015-09-16 | 美的集团股份有限公司 | Electromagnetic heating device and control assembly and control method thereof |
| CN105329105A (en) * | 2014-07-30 | 2016-02-17 | 比亚迪股份有限公司 | Motor controller, IGBT over-temperature protection method and apparatus for same |
| CN105605631A (en) * | 2016-01-21 | 2016-05-25 | 浙江绍兴苏泊尔生活电器有限公司 | Heating control method for induction cooker and induction cooker |
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