CN110341650B - Defroster protection circuit and defroster - Google Patents
Defroster protection circuit and defroster Download PDFInfo
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- CN110341650B CN110341650B CN201910630150.3A CN201910630150A CN110341650B CN 110341650 B CN110341650 B CN 110341650B CN 201910630150 A CN201910630150 A CN 201910630150A CN 110341650 B CN110341650 B CN 110341650B
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- control unit
- defroster
- temperature
- preset value
- heating
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- 238000010438 heat treatment Methods 0.000 claims abstract description 116
- 238000011084 recovery Methods 0.000 claims description 37
- 238000001514 detection method Methods 0.000 claims description 21
- 239000000779 smoke Substances 0.000 claims description 20
- 238000010257 thawing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
- B60S1/026—Cleaning windscreens, windows or optical devices including defroster or demisting means using electrical means
Abstract
The invention provides a defroster protection circuit and a defroster, and relates to the field of new energy buses. The defroster protection circuit comprises a control unit and a temperature control unit, wherein the control unit is used for being connected between a heating resistance wire of the defroster and a power supply in series, the temperature control unit is electrically connected with the control unit, and the temperature control unit is used for controlling the control unit to be disconnected when the heating temperature in the defroster reaches a first preset value, so that the heating resistance wire and the power supply are disconnected. In the invention, the control unit is connected in series between the heating resistance wire and the power supply, when the inside of the defroster fails, the heating resistance wire is still in a working state, and in the continuous heating process, when the heating temperature inside the defroster reaches a first preset value, the temperature control unit controls the control unit to be disconnected so as to disconnect the heating resistance wire from the power supply, thereby stopping the operation of the heating resistance wire, preventing the inside of the defroster from failing due to overhigh temperature, and improving the safety factor of the defroster.
Description
Technical Field
The application relates to the field of new energy buses, in particular to a defroster protection circuit and a defroster.
Background
Along with the development of science and technology, pure electric vehicles are more and more, and electric defrosters become necessary equipment of electric vehicles, but because the electric defrosters are equipment for defrosting by utilizing high-temperature heat sources, a defroster fan or a relay cannot normally emit once a fault heat source occurs, so that the internal temperature of the defroster is too high, spontaneous combustion is caused, and the life safety of passengers is directly influenced.
The protection device of the defroster in the prior art plays a role in protecting the defroster when the temperature is too high, so that the safety performance of the defroster is lower.
Disclosure of Invention
In order to overcome at least the above-mentioned drawbacks of the prior art, it is an object of the present application to provide a defroster protection circuit and a defroster.
In a first aspect, an embodiment of the present invention provides a defroster protection circuit including: the control unit is used for being connected in series between a heating resistance wire of the defroster and a power supply, the temperature control unit is electrically connected with the control unit, and the temperature control unit is used for controlling the control unit to be disconnected when the heating temperature inside the defroster reaches a first preset value, so that the heating resistance wire is disconnected from the power supply.
In an alternative embodiment, the control unit includes a control relay, the control relay includes a coil and a normally open main contact, the coil is connected in series between the temperature control unit and a control module, the normally open main contact is connected in series between the heating resistance wire and the power supply, when the heating temperature inside the defroster reaches the first preset value, the temperature control unit turns off the coil, and the normally open main contact turns off.
In an alternative embodiment, the control relay further comprises a normally open auxiliary contact, one end of the normally open auxiliary contact is connected with the control module, and the other end of the normally open auxiliary contact is grounded.
In an alternative embodiment, the control unit further comprises a diode, the diode is connected with the coil in parallel, the cathode of the diode is connected with the control module, and the anode of the diode is grounded.
In an alternative embodiment, the control unit further includes a detection module, the coil is connected in series between the temperature control unit and the detection module, and the detection module is used for controlling the coil to be powered after receiving the opening signal, so as to control the normally open main contact to be closed.
In an alternative embodiment, the temperature control unit includes a first temperature control fuse connected in series between the heating resistance wire and the control unit, and when the heating temperature reaches the second preset value, the first temperature control fuse is blown.
In an optional embodiment, the temperature control unit further comprises a second temperature control fuse and a first self-recovery switch, wherein one end of the first self-recovery switch is grounded after being connected with the second temperature control fuse in series, and the other end of the first self-recovery switch is connected with the control unit in series;
when the heating temperature reaches the second preset value, the second temperature-controlled fuse is fused;
when the heating temperature is not lower than a first preset value, the first self-recovery switch is disconnected;
when the heating temperature is not higher than a third preset value, the first self-recovery switch is closed, wherein the third preset value is smaller than the first preset value, and the first preset value is smaller than the second preset value.
In an alternative embodiment, the temperature control unit further comprises a second self-recovery switch, one end of the second self-recovery switch is grounded, and the other end of the second self-recovery switch is electrically connected with the control unit;
when the heating temperature is not lower than a first preset value, the second self-recovery switch is disconnected;
after detecting the disconnection signal of the disconnection of the second self-recovery switch, the control unit transmits the disconnection signal to a control terminal;
and when the heating temperature is not higher than a third preset value, the second self-recovery switch is closed.
In an alternative embodiment, the defroster protection circuit further comprises a smoke sensing module, wherein the smoke sensing module is installed at a window of the defroster, is electrically connected with the control unit, and is used for detecting smoke sensing information in the defroster and transmitting the smoke sensing information to the control unit;
the control unit is used for disconnecting the power supply and the heating resistance wire after receiving the smoke sensing information.
In a second aspect, an embodiment of the present invention provides a defroster, including a heating resistance wire, a power supply, and a defroster protection circuit according to any one of the foregoing embodiments, where the control unit is configured to be connected in series between the heating resistance wire and the power supply, and the temperature control unit is electrically connected to the control unit, and the temperature control unit is configured to control the control unit to disconnect the heating resistance wire from the power supply when a heating temperature inside the defroster reaches a second preset value.
Compared with the prior art, the application has the following beneficial effects: the defroster protection circuit comprises a control unit and a temperature control unit, wherein the control unit is used for being connected between a heating resistance wire of the defroster and a power supply in series, the temperature control unit is electrically connected with the control unit, and the temperature control unit is used for controlling the control unit to be disconnected when the heating temperature in the defroster reaches a first preset value, so that the heating resistance wire and the power supply are disconnected.
In the invention, the control unit is connected in series between the heating resistance wire and the power supply, when the inside of the defroster fails, the heating resistance wire is still in a working state, and in the continuous heating process, when the heating temperature inside the defroster reaches a first preset value, the temperature control unit controls the control unit to be disconnected so as to disconnect the heating resistance wire from the power supply, thereby stopping the operation of the heating resistance wire, preventing the inside of the defroster from failing due to overhigh temperature, and improving the safety factor of the defroster.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a connection block diagram of a defroster protection circuit applied to a defroster according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of a defroster protection circuit applied to a defroster according to an embodiment of the present invention.
Icon: 10-defroster; 100-defroster protection circuits; 110-a control unit; 112-control relay; 1122-coil; 1124-normally open main contacts; 1126-a normally open auxiliary contact; 1128-a diode; 114-a detection module; 120-a temperature control unit; 122-a first temperature controlled fuse; 124-a second temperature controlled fuse; 126-a first self-recovery switch; 128-a second self-healing switch; 130-a smoke sensing module; 200-heating resistance wires; 300-power supply; 400-blower.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Examples
Referring to fig. 1, the present embodiment provides a defroster protection circuit 100, and the defroster protection circuit 100 provided in the present embodiment can prevent the internal temperature of the defroster 10 from being too high to fail, thereby improving the safety factor of the defroster 10.
The defroster protection circuit 100 provided in this embodiment is applied to a defroster 10 of a vehicle, the defroster 10 includes a heating resistance wire 200, a power supply 300 and a blower 400, the heating resistance wire 200 is electrically connected to both the defroster protection circuit 100 and the power supply 300, and the blower 400 is connected to the defroster protection circuit 100.
Referring to fig. 2, in the present embodiment, the defroster protection circuit 100 includes a control unit 110 and a temperature control unit 120, wherein the control unit 110 is connected in series between the heating resistance wire 200 of the defroster 10 and the power supply 300, the temperature control unit 120 is electrically connected to the control unit 110, and the temperature control unit 120 is used for controlling the control unit 110 to be disconnected when the heating temperature inside the defroster 10 reaches a first preset value, thereby disconnecting the heating resistance wire 200 from the power supply 300.
In this embodiment, the control unit 110 is connected in series between the heating resistance wire 200 and the power supply 300, when the inside of the defroster 10 fails, the heating resistance wire 200 is still in a working state, and in the process of continuous heating, when the heating temperature inside the defroster 10 reaches a first preset value, the temperature control unit 120 controls the control unit 110 to disconnect the heating resistance wire 200 from the power supply 300, so that the heating resistance wire 200 stops working, the inside of the defroster 10 is prevented from being failed due to the excessively high temperature, the safety factor of the defroster 10 is improved, and the safety factor of the vehicle is improved.
In this embodiment, the control unit 110 includes a control relay 112, the control relay 112 includes a coil 1122 and a normally open main contact 1124, the coil 1122 is connected in series between the temperature control unit 120 and a control module, the normally open main contact 1124 is connected in series between the heating resistance wire 200 and the power supply 300, and when the heating temperature inside the defroster 10 reaches a first preset value, the temperature control unit 120 turns off the coil 1122, and the normally open main contact 1124 turns off.
In this embodiment, the normally open main contact 1124 is connected in series between the heating resistance wire 200 and the power supply 300, the temperature control unit 120 is connected in series with the coil 1122, when the heating resistance wire 200 is in a working state, the normally open main contact 1124 is always in a closed state, when the heating temperature of the heating resistance wire 200 reaches a first preset value, the temperature control switch controls the coil 1122 to lose power, and after the coil 1122 loses power, the normally open main contact 1124 is disconnected, so that the heating resistance wire 200 is disconnected from the power supply 300, and the heating resistance wire 200 is continuously heated after the inside of the defroster 10 is prevented from causing a safety accident.
In this embodiment, the control module may be an external power supply 300 or a controller, and is mainly used to start the control relay 112, so that the control relay 112 is obtained, and the normally open main contact 1124 is closed, so that the heating resistance wire 200 starts to work.
In this embodiment, the control module is a controller.
In this embodiment, the control relay 112 further includes a normally open auxiliary contact 1126, one end of the normally open auxiliary contact 1126 is connected to the control module, and the other end is grounded.
In this embodiment, normally open auxiliary contact 1126 is connected in parallel with normally open main contact 1124, and is mainly used to detect whether normally open main contact 1124 is operating normally. For example: when the coil 1122 is powered on, the normally open main contact 1124 and the normally open auxiliary contact 1126 are closed under the action of the magnetic force generated by the coil 1122, and when the coil 1122 is powered off, the normally open main contact 1124 and the normally open auxiliary contact 1126 are opened under the action of the magnetic force generated by the coil 1122. When the control module controls the coil 1122 to be deenergized, the normally open auxiliary contact 1126 is opened, the control module receives a low level, and when the heating resistance wire 200 is still in a heating state at this time, it can be determined that the normally open main contact 1124 is failed, and when the coil 1122 is deenergized, the normally open main contact 1124 cannot be opened.
In this embodiment, the control unit 110 further includes a diode 1128, the diode 1128 is connected in parallel with the coil 1122, the cathode of the diode 1128 is connected to the control module, and the anode is grounded.
In the present embodiment, the diode 1128 is connected in parallel with the coil 1122, and can protect the coil 1122 from the reverse current flow and damage to the coil 1122.
In this embodiment, the control unit 110 further includes a detection module 114, the coil 1122 is connected in series between the temperature control unit 120 and the detection module 114, and the detection module 114 is configured to control the coil 1122 to be powered on after receiving the on signal, so as to control the normally open main contact 1124 to be closed.
In this embodiment, when the detection module 114 receives the on signal, a high level is output to the coil 1122, so that the coil 1122 is obtained, and the normally open main contact 1124 is closed under the action of the magnetic field generated after the coil 1122 is powered. The heating resistance wire 200 starts to operate.
In this embodiment, the detection module 114 is the control module described above, the coil 1122 is electrically connected to the detection module 114, and the normally open auxiliary contact 1126 is electrically connected to the detection module 114.
In the present embodiment, the temperature control unit 120 includes a first temperature control fuse 122, the first temperature control fuse 122 is connected in series between the heating resistor wire 200 and the control unit 110, and when the heating temperature reaches a second preset value, the first temperature control fuse 122 is blown.
In the present embodiment, the first temperature-controlled fuse 122 is connected in series between the heating resistance wire 200 and the detection module 114, and when the heating temperature in the defroster 10 reaches the second preset value, the first temperature-controlled fuse 122 is fused, thereby disconnecting the heating resistance wire 200 from the power supply 300.
In this embodiment, the second preset value is 120 degrees. When the temperature in the defroster 10 is higher than 120 degrees, the first temperature control fuse 122 is melted, so that the safety accident caused by the continuous heating of the heating resistance wire 200 with the excessive temperature is avoided.
In this embodiment, when the first temperature-controlled fuse 122 is blown, the circuit cannot be automatically repaired and needs to be manually repaired.
In the present embodiment, the temperature control unit 120 further includes a second temperature control fuse 124 and a first self-recovery switch 126, wherein one end of the first self-recovery switch 126 is grounded after being connected in series with the second temperature control fuse 124, and the other end is connected in series with the control unit 110;
when the heating temperature reaches a second preset value, the second temperature-controlled fuse 124 is blown;
when the heating temperature is not lower than the first preset value, the first self-recovery switch 126 is turned off;
when the heating temperature is not higher than the third preset value, the first self-recovery switch 126 is closed, wherein the third preset value is smaller than the first preset value, and the first preset value is smaller than the second preset value.
In the present embodiment, the second temperature-controlled fuse 124 is connected in series with the first self-recovery switch 126, and then has one end connected to the coil 1122 and the other end connected to the ground. When the heating temperature in the defroster 10 is equal to or higher than the first preset value during the operation of the heating resistance wire 200, the first self-recovery switch 126 is turned off, the coil 1122 is deenergized, and the normally open main contact 1124 is turned off, so that the heating resistance wire 200 and the power supply 300 are turned on. When the temperature in the defroster 10 is less than or equal to the third preset value, the first self-recovery switch 126 automatically recovers, the coil 1122 is powered, the normally open main contact 1124 is closed, and the heating resistance wire 200 continues to operate.
In this embodiment, when the heating temperature in the defroster 10 is greater than or equal to the first preset value, the heating resistance wire 200 and the power supply 300 are disconnected, so that the heating resistance wire 200 stops working, and when the heating temperature in the defroster box is restored below the third preset value, the safe working of the inside of the defroster box is indicated, and the first self-recovery switch 126 is automatically closed. The first self-recovery switch 126 can disconnect the heating resistance wire 200 from the power supply 300 when the heating temperature in the defroster 10 is equal to or higher than a first preset value, and automatically control whether the heating resistance wire 200 starts to operate according to the heating temperature in the defroster box after the heating temperature is equal to or lower than a third preset value together with the heating resistance wire 200 and the power supply 300, thereby improving the self-adaptability of the whole protection circuit of the defroster box.
In this embodiment, the first preset value is 105 degrees, and the third preset value is 60 degrees.
In this embodiment, when the heating temperature in the defrost case is equal to or higher than the first preset value, the first self-recovery switch 126 is turned off, the coil 1122 is turned off, and the normally open main contact 1124 is turned off. If the normally open main contact 1124 breaks down at this time, the heating resistor wire 200 is still in the working state, and the heating temperature in the defrosting box reaches the second preset value due to continuous heating, at this time, the first temperature-controlled fuse 122 connected in series with the heating resistor wire 200 and the second temperature-controlled fuse 124 connected in series with the coil 1122 are both fused, so that the heating resistor wire 200 and the power supply 300 are cut off from two branches, and the temperature in the defrosting box is prevented from rising again, thereby causing the fault of the defrosting box.
In this embodiment, the temperature control unit 120 further includes a second self-recovery switch 128, where one end of the second self-recovery switch 128 is grounded, and the other end is electrically connected to the control unit 110;
when the heating temperature is not lower than the first preset value, the second self-recovery switch 128 is turned off;
after detecting the off signal of the second self-recovery switch 128, the control unit 110 transmits the off signal to a control terminal;
when the heating temperature is not higher than the third preset value, the second self-recovery switch 128 is closed.
In this embodiment, one end of the second self-recovery switch 128 is grounded, and the other end is electrically connected to the detection port of the detection module 114, and when the second self-recovery switch 128 is turned off, the detection port detects a low level, i.e. a turn-off signal, and transmits the turn-off signal to an external control terminal, so that an operator can know that the internal temperature of the defroster 10 is too high.
In this embodiment, the defroster protection circuit 100 further includes a smoke sensing module 130, where the smoke sensing module 130 is installed at a window of the defroster 10 and electrically connected to the control unit 110, and the smoke sensing module 130 is used for detecting smoke sensing information in the defroster 10 and transmitting the smoke sensing information to the control unit 110;
the control unit 110 is configured to disconnect the power supply 300 and the heating resistance wire 200 after receiving the smoke information, and control the fan 400 to stop operating.
In the present embodiment, the smoke sensing module 130 is installed at a window of the defroster 10 for detecting smoke sensing information in the defroster 10, and indicates that the defroster 10 is malfunctioning when smoke occurs in the defroster 10. After receiving the smoke sensing information, the detection module 114 outputs a low level to the coil 1122, which causes the coil 1122 to be powered off and the normally open main contact 1124 to be opened, thereby disconnecting the heating resistance wire 200 from the power supply 300.
In this embodiment, the smoke sensing module 130 may also detect a real-time temperature in the defroster 10, and when the real-time temperature is greater than or equal to a second preset value, send a fault signal to the detection module 114, and the detection module 114 controls the coil 1122 to be powered off according to the fault information.
In summary, in the defroster protection circuit 100 provided in this embodiment, the control unit 110 is connected in series between the heating resistor wire 200 and the power supply 300, when the inside of the defroster 10 fails, the heating resistor wire 200 is still in a working state, and in the process of continuously heating, when the heating temperature inside the defroster 10 reaches the first preset value, the temperature control unit 120 controls the control unit 110 to disconnect the heating resistor wire 200 from the power supply 300, so that the heating resistor wire 200 stops working, the inside temperature of the defroster 10 is prevented from being excessively high, the safety factor of the defroster 10 is improved, and the safety factor of the vehicle is improved.
The foregoing is merely various embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A defroster protection circuit comprising: the control unit is used for being connected in series between a heating resistance wire of the defroster and a power supply, the temperature control unit is electrically connected with the control unit, and the temperature control unit is used for controlling the control unit to be disconnected when the heating temperature in the defroster reaches a first preset value, so that the heating resistance wire is disconnected from the power supply;
the temperature control unit further comprises a second temperature control fuse and a first self-recovery switch, wherein one end of the first self-recovery switch is grounded after being connected with the second temperature control fuse in series, and the other end of the first self-recovery switch is connected with the control unit in series;
when the heating temperature reaches a second preset value, the second temperature-controlled fuse is fused;
when the heating temperature is not lower than a first preset value, the first self-recovery switch is disconnected;
when the heating temperature is not higher than a third preset value, the first self-recovery switch is closed, wherein the third preset value is smaller than the first preset value, and the first preset value is smaller than the second preset value.
2. The defroster protection circuit of claim 1 wherein the control unit comprises a control relay comprising a coil connected in series between the temperature control unit and a control module and a normally open main contact connected in series between the heating resistance wire and the power supply, the temperature control unit opening the coil and the normally open main contact opening when the heating temperature inside the defroster reaches the first preset value.
3. The defroster protection circuit of claim 2 wherein said control relay further comprises a normally open auxiliary contact connected at one end to said control module and at the other end to ground.
4. The defroster protection circuit of claim 2 wherein the control unit further comprises a diode connected in parallel with the coil, a negative electrode of the diode connected to the control module and a positive electrode grounded.
5. The defroster protection circuit of claim 2 wherein the control unit further comprises a detection module, the coil being connected in series between the temperature control unit and the detection module, the detection module being configured to control the coil to be energized after receiving an open signal to control the normally open main contact to close.
6. The defroster protection circuit of claim 1 wherein the temperature control unit comprises a first temperature controlled fuse in series between the heating resistance wire and the control unit that fuses when the heating temperature reaches a second preset value.
7. The defroster protection circuit of claim 1 wherein the temperature control unit further comprises a second self-recovering switch having one end grounded and the other end electrically connected to the control unit,
when the heating temperature is not lower than a first preset value, the second self-recovery switch is disconnected;
after detecting the disconnection signal of the disconnection of the second self-recovery switch, the control unit transmits the disconnection signal to a control terminal;
and when the heating temperature is not higher than a third preset value, the second self-recovery switch is closed.
8. The defroster protection circuit of claim 1 further comprising a smoke sensing module mounted at a window of the defroster electrically connected to the control unit for detecting smoke sensing information within the defroster and transmitting to the control unit;
and the control unit is used for disconnecting the power supply and the heating resistance wire after receiving the smoke sensing information and controlling the fan of the defroster to stop running.
9. A defroster comprising a heating resistance wire, a power supply and a defroster protection circuit as recited in any one of claims 1-8, wherein the control unit is configured to be connected in series between the heating resistance wire and the power supply, the temperature control unit is electrically connected with the control unit, and the temperature control unit is configured to control the control unit to be disconnected when a heating temperature inside the defroster reaches a second preset value, thereby disconnecting the heating resistance wire from the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910630150.3A CN110341650B (en) | 2019-07-12 | 2019-07-12 | Defroster protection circuit and defroster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910630150.3A CN110341650B (en) | 2019-07-12 | 2019-07-12 | Defroster protection circuit and defroster |
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| CN110341650A CN110341650A (en) | 2019-10-18 |
| CN110341650B true CN110341650B (en) | 2024-01-19 |
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| CN201910630150.3A Active CN110341650B (en) | 2019-07-12 | 2019-07-12 | Defroster protection circuit and defroster |
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| CN111351309B (en) * | 2020-03-11 | 2022-04-15 | 合肥美的电冰箱有限公司 | Refrigeration equipment and fault detection method, control method and processing device thereof |
| CN111891068B (en) * | 2020-06-29 | 2021-08-13 | 东风商用车有限公司 | Warm air control system capable of automatically demisting |
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| CN109693648A (en) * | 2019-02-19 | 2019-04-30 | 珠海广通汽车有限公司 | Electric automobile high-voltage defroster and electric car |
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Also Published As
| Publication number | Publication date |
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| CN110341650A (en) | 2019-10-18 |
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