CN111128630A - Temperature control method and system of manual maintenance switch and vehicle - Google Patents

Temperature control method and system of manual maintenance switch and vehicle Download PDF

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Publication number
CN111128630A
CN111128630A CN201811277814.4A CN201811277814A CN111128630A CN 111128630 A CN111128630 A CN 111128630A CN 201811277814 A CN201811277814 A CN 201811277814A CN 111128630 A CN111128630 A CN 111128630A
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CN
China
Prior art keywords
switch
manual maintenance
manual
maintenance switch
temperature
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Pending
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CN201811277814.4A
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Chinese (zh)
Inventor
李焕明
郑立奇
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Borgward Automotive China Co Ltd
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Borgward Automotive China Co Ltd
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Priority to CN201811277814.4A priority Critical patent/CN111128630A/en
Publication of CN111128630A publication Critical patent/CN111128630A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/47—Means for cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/46—Circuit arrangements not adapted to a particular application of the protective device

Abstract

The invention discloses a temperature control method and system for a manual maintenance switch and a vehicle. The temperature control method of the manual maintenance switch comprises the following steps: detecting the heat productivity of the manual maintenance switch; judging whether the manual maintenance switch has a risk of false fusing according to the heat productivity of the manual maintenance switch; and if so, radiating the manual maintenance switch and/or entering a safety mode. The temperature control method of the manual maintenance switch can monitor the temperature of the manual maintenance switch, and can dissipate heat when the temperature of the manual maintenance switch is too high, so that abnormal power supply caused by overheating and fusing of the manual maintenance switch is avoided, and further, the reliability of high-voltage power supply of a vehicle is improved.

Description

Temperature control method and system of manual maintenance switch and vehicle
Technical Field
The invention relates to the technical field of automobiles, in particular to a temperature control method and system of a manual maintenance switch and a vehicle.
Background
The conventional manual switch maintenance system is shown in fig. 10, and is a device that a fuse is arranged in a separable switch box, when a circuit system has a fault (such as short circuit), the conductor inside the fuse is melted by a large current, so that the circuit is cut off, and the circuit system is protected from being burnt.
However, in the conventional manual service switch, since the built-in fuse is essentially a conductor which is easily melted in one section, the heat generation amount thereof rapidly increases with the increase of the system power, and when the temperature exceeds the tolerance limit thereof with the increase of the heat generation amount, the built-in fuse is easily melted by mistake, so that the circuit is accidentally cut off, thereby causing danger.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art described above.
To this end, a first object of the invention is to propose a method for temperature control of a manual service switch. The method can monitor the temperature of the manual maintenance switch, and can dissipate heat when the temperature of the manual maintenance switch is too high, so that abnormal power supply caused by overheating and fusing of the manual maintenance switch is avoided, and further, the reliability of high-voltage power supply of the vehicle is improved.
A second object of the present invention is to provide a temperature control system for a manual service switch.
A third object of the present invention is to provide a temperature control circuit for a manual service switch.
A fourth object of the invention is to propose a vehicle.
In order to achieve the above object, a first aspect of the present invention discloses a temperature control method of a manual service switch, comprising the steps of: detecting the heat productivity of the manual maintenance switch; judging whether the manual maintenance switch has a risk of false fusing according to the heat productivity of the manual maintenance switch; and if so, radiating the manual maintenance switch and/or entering a safety mode.
According to the temperature control method of the manual maintenance switch, the temperature of the manual maintenance switch can be monitored, heat dissipation is carried out when the temperature of the manual maintenance switch is too high, abnormal power supply caused by overheating and fusing of the manual maintenance switch is avoided, and the reliability of high-voltage power supply of a vehicle is improved.
Further, said dissipating heat from said manual service switch, and/or, entering a safe mode, comprises: and controlling the heat dissipation assembly to be started to dissipate heat of the manual maintenance switch, and/or forcing the vehicle to decelerate, or prompting the driver to decelerate or stop.
A second aspect of the present invention discloses a temperature control system of a manual service switch, comprising: the detection module is used for detecting the heat productivity of the manual maintenance switch; the judging module is used for judging whether the manual maintenance switch has the risk of mistaken fusing according to the heat productivity of the manual maintenance switch; and the control module is used for radiating the manual maintenance switch and/or entering a safety mode when the manual maintenance switch has fusing risk.
According to the temperature control system of the manual maintenance switch, the temperature of the manual maintenance switch can be monitored, heat dissipation is carried out when the temperature of the manual maintenance switch is too high, abnormal power supply caused by overheating and fusing of the manual maintenance switch is avoided, and the reliability of high-voltage power supply of a vehicle is improved.
Further, the control module is configured to: and controlling the heat dissipation assembly to be started to dissipate heat of the manual maintenance switch, and/or forcing the vehicle to decelerate, or prompting the driver to decelerate or stop.
A third aspect of the present invention discloses a temperature control circuit of a manual service switch, comprising: the detection assembly is used for detecting the temperature of the manual maintenance switch; the heat dissipation assembly is used for adjusting the temperature of the manual maintenance switch; and the processing assembly is respectively connected with the detection assembly and the heat dissipation assembly so as to start or close the heat dissipation assembly according to the temperature of the manual maintenance switch.
According to the temperature control circuit of the manual maintenance switch, the temperature of the manual maintenance switch can be monitored, heat dissipation is carried out when the temperature of the manual maintenance switch is too high, abnormal power supply caused by overheating and fusing of the manual maintenance switch is avoided, and the reliability of high-voltage power supply of a vehicle is improved.
Further, the detection assembly includes: the device comprises a variable resistor with the resistance value changing along with the change of the temperature of the manual maintenance switch and a divider resistor connected with the variable resistor in series, wherein one end of the processing assembly is connected between the variable resistor and the divider resistor so as to acquire the voltage of the variable resistor.
Further, the processing assembly comprises: the control end of the switch tube is connected with the variable resistor, one end of the switch tube is connected with working voltage, the other end of the switch tube is connected with the radiating component, the control end is influenced by the voltage of the variable resistor to control the connection and disconnection of one end and the other end of the switch tube, and the radiating component is automatically started when the switch tube is connected.
Further, the switch tube is an MOS tube, a gate of the MOS tube is connected to the variable resistor, a source of the MOS tube is connected to the heat dissipation assembly, and a drain of the MOS tube is electrically connected to the heat dissipation assembly.
Further, still include: one end of the filter capacitor is connected with a reference voltage, the other end of the filter capacitor is connected with the divider resistor, and the filter capacitor is connected with the variable resistor in parallel.
Further, still include: and the cathode of the voltage stabilizing diode is connected with one end of the variable resistor, and the anode of the voltage stabilizing diode is grounded.
Further, a normally closed switch is arranged between the MOS tube and the variable resistor.
Further, still include: the amplifier assembly, one end of the said amplifier assembly couples to said detection assembly; one end of the ADC conversion circuit is connected with the other end of the amplifier component; and the optical coupling isolation assembly is positioned between the AD conversion circuit and the battery management system, wherein the normally closed switch is controlled by the battery management system.
Further, still include: and the processing component prompts a user through the prompting component when determining that the temperature of the manual maintenance switch is higher than a threshold value according to the voltage of the variable resistor.
A fourth aspect of the invention discloses a vehicle, comprising: the temperature control circuit of the manual service switch according to the third aspect described above. This vehicle can monitor manual maintenance switch's temperature to dispel the heat when manual maintenance switch's temperature is too high, avoid manual maintenance switch self overheated fusing and lead to the power supply unusual, and then, improve the reliability of the high voltage power supply of vehicle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method of temperature control of a manual service switch according to one embodiment of the present invention;
FIG. 2 is a flow chart of a method of temperature control of a manual service switch according to another embodiment of the present invention;
FIG. 3 is a block diagram of a temperature control system for a manual service switch according to one embodiment of the present invention;
FIG. 4 is a block diagram of a temperature control circuit of a manual service switch according to one embodiment of the present invention;
FIG. 5 is a block diagram of a temperature control circuit of a manual service switch according to a specific example of the present invention;
FIG. 6 is a circuit diagram of a temperature control circuit of a manual service switch according to one embodiment of the present invention;
FIG. 7 is an electrical schematic of a temperature control circuit of a manual service switch according to one embodiment of the present invention;
FIG. 8 is a graph of the trend of the resistance of the variable resistor with temperature change in the temperature control circuit of the manual service switch according to one embodiment of the present invention;
FIG. 9 is a voltage distribution of a voltage divider circuit in a temperature control circuit of a manual service switch, according to one embodiment of the present invention;
fig. 10 is a system composition structural view of a conventional manual service switch.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes a temperature control method, a system and a vehicle of a manual service switch according to an embodiment of the invention with reference to the accompanying drawings.
FIG. 1 is a flow chart of a method of temperature control for a manual service switch according to one embodiment of the present invention.
As shown in fig. 1, a temperature control method of a manual service switch according to an embodiment of the present invention includes the steps of:
s101: the heat productivity of the manual maintenance switch is detected.
In an electric vehicle, a power battery pack providing high voltage electricity, which is referred to as a battery pack for short, is provided, and a manual maintenance switch is usually configured on the battery pack, and the manual maintenance switch can be triggered by a person when needed, so that the direct connection between the battery pack and a high-voltage line is disconnected, and electric shock is avoided.
Wherein, the calorific value includes temperature and duration, namely: the temperature, as well as the duration of the manual service switch, is detected.
The temperature may be, but is not limited to, detected by a detection circuit or a temperature sensor.
S102: and judging whether the manual maintenance switch has the risk of false fusing according to the heat productivity of the manual maintenance switch.
Specifically, when the temperature of the manual service switch is higher than a threshold value and the duration exceeds a predetermined time, it is considered that the heat generation amount is excessive, and there is a risk of blowing the manual service switch.
It should be noted that the threshold value generally refers to the highest temperature that the manual maintenance switch can normally work without fusing, or a temperature value around the highest temperature, and the threshold value may be obtained by calibration in advance according to experiments. The predetermined time is, for example, 3 minutes, namely: when the temperature of the manual maintenance switch is too high and lasts for 3 minutes, the manual maintenance switch is easy to be blown off by mistake.
It will be appreciated that the 3 minutes described above are merely exemplary, and that the predetermined time may also be pre-calibrated experimentally.
That is, the manual maintenance switch is essentially a conductor that is easily melted in one section due to the built-in fuse, the heat generation amount thereof rapidly increases with the increase of the system power, and when the temperature exceeds the tolerance limit with the increase of the heat generation amount, the manual maintenance switch is easily melted by mistake.
Of course, when a circuit system has a fault (such as a short circuit), the conductor inside the fuse can be melted by a large current, so that the circuit is cut off, the circuit system is protected from being burnt, and the fuse is normally fused.
S103: if so, the manual maintenance switch is subjected to heat dissipation, and/or a safety mode is entered.
For example: and controlling the heat dissipation assembly to be started to dissipate heat of the manual maintenance switch, and/or forcing the vehicle to decelerate, or prompting the driver to decelerate or stop.
In particular, when the temperature of the manual service switch is too high and there is a risk of fusing, the temperature of the manual service switch can be reduced, for example: the heat dissipation component comprises a fan, so that the heat dissipation component can be quickly cooled, and the risk of fusing is eliminated.
Entering the secure mode means: the vehicle is forced to decelerate so as to reduce the load of the manual maintenance switch and reduce the temperature, or a prompt is sent to a driver to prompt the driver to decelerate or stop the vehicle so that the temperature of the manual maintenance switch can be reduced and the manual maintenance switch is prevented from being fused.
As a specific example, as shown in fig. 2, the method includes:
s201: and detecting the voltage of a variable resistor, wherein the variable resistor is connected in series on a signal path of the manual maintenance switch, and the resistance value of the variable resistor changes along with the change of the temperature.
S202: and controlling the starting and the closing of a heat dissipation assembly according to the voltage of the variable resistor, wherein the heat dissipation assembly is used for adjusting the temperature of the manual maintenance switch.
The control of the heat dissipation assembly can be realized by the relevant processing assembly through software. Of course, in other examples of the present invention, the start and stop of the heat dissipation assembly may also be automatically implemented by hardware, for example: further comprising: the starting and the closing of the radiating assembly are automatically controlled through the switch tube, wherein the control end of the switch tube is connected with the variable resistor, one end of the switch tube is connected with working voltage, the other end of the switch tube is connected with the radiating assembly, the control end is influenced by the voltage of the variable resistor to control the on-off of one end and the other end of the switch tube, and the radiating assembly is automatically controlled to work when the switch tube is switched on.
According to the temperature control method of the manual maintenance switch, the temperature of the manual maintenance switch can be monitored, heat dissipation is carried out when the temperature of the manual maintenance switch is too high, power supply abnormity caused by overheating and fusing of the manual maintenance switch is avoided, and further the reliability of high-voltage power supply of a vehicle is improved.
As shown in FIG. 3, an embodiment of the present invention discloses a temperature control system 300 for a manual service switch, comprising: a detection module 310, a determination module 320, and a control module 330.
The detection module 310 is configured to detect a heat value of the manual maintenance switch. The judging module 320 is configured to judge whether the manual maintenance switch has a risk of false fusing according to the heat productivity of the manual maintenance switch. The control module 330 is configured to dissipate heat from the manual service switch and/or enter a safety mode when the manual service switch is in a fusing risk.
In one embodiment of the present invention, the control module 330 is configured to: and controlling the heat dissipation assembly to be started to dissipate heat of the manual maintenance switch, and/or forcing the vehicle to decelerate, or prompting the driver to decelerate or stop.
According to the temperature control system of the manual maintenance switch, the temperature of the manual maintenance switch can be monitored, heat dissipation is carried out when the temperature of the manual maintenance switch is too high, power supply abnormity caused by overheating and fusing of the manual maintenance switch is avoided, and the reliability of high-voltage power supply of a vehicle is improved.
It should be noted that, a specific implementation manner of the temperature control system of the manual service switch according to the embodiment of the present invention is similar to a specific implementation manner of the temperature control method of the manual service switch according to the embodiment of the present invention, and please refer to the description of the method part specifically, and details are not repeated in order to reduce redundancy.
FIG. 4 is a block diagram of a temperature control circuit for a manual service switch, according to one embodiment of the present invention. As shown in fig. 4, a temperature control circuit 100 for a manual service switch according to an embodiment of the present invention includes: detection component 110, heat dissipation component 120, and processing component 130.
Wherein the detection assembly 110 is used for detecting the temperature of the manual service switch. The heat sink assembly 120 is used to regulate the temperature of the manual service switch. The processing component 130 is respectively connected to the detecting component 110 and the heat dissipating component 120, so as to turn on or off the heat dissipating component 110 according to the temperature of the manual maintenance switch.
It will be appreciated that the specific form in which the sensing assembly 110 senses the temperature of the manual service switch may be varied in a number of ways, for example, in one example of the invention, as shown in FIG. 5, the sensing assembly 110 includes: a variable resistor 111 and a detection circuit 112. Referring to FIG. 6, the detection circuit 112 includes a voltage dividing resistor RRefFilter capacitor C1And a zener diode D1And the like.
Wherein, the resistance value of the variable resistor 111 changes with the temperature of the manual maintenance switch, and the variable resistor 111 and the divider resistor RRefConnected in series, and one end of the processing component 130 is connected to the variable resistor 111 and the voltage dividing resistor RRefTo collect the voltage of the variable resistor 111.
As a specific example, referring to fig. 6, the variable resistor 111 is connected in series to a signal path of the manual service switch, and the resistance value of the variable resistor 111 changes with temperature. The detection circuit 112 is used for detecting the voltage of the variable resistor 111, the detection circuit 112 is connected with a signal path, and the detection circuit 112 comprises a voltage division resistor for dividing the voltage of the variable resistor 111. The heat sink assembly 120 is used to regulate the temperature of the manual service switch. The processing component 130 controls the heat sink 120 to be turned on and off according to the voltage of the variable resistor 111.
Specifically, since the resistance value of the variable resistor changes with the change of the temperature, whether the temperature of the manual service switch is too high can be determined according to the detected resistance value of the variable resistor. And when the temperature of manual maintenance switch was too high, processing component 130 can control radiator unit 120 and start to cool down manual maintenance switch, avoided the too high temperature of manual maintenance switch and damaged.
According to the temperature control circuit of the manual maintenance switch, the temperature of the manual maintenance switch can be monitored, heat dissipation is carried out when the temperature of the manual maintenance switch is too high, abnormal power supply caused by overheating and fusing of the manual maintenance switch is avoided, and the reliability of high-voltage power supply of a vehicle is improved.
In other examples of the invention, illustrated in connection with FIG. 5, the processing component 130 includes: the switch tube 131, the control end of switch tube 131 links to each other with variable resistance 111, one end of switch tube 131 connects operating voltage and the other end links to each other with radiator unit 120, the control end receives the influence of variable resistance 111's voltage and the switching on and the shutoff of the one end of control switch tube and the other end to automatic control radiator unit 120 work when switching on, can be like this when the temperature of manual maintenance switch is too high automatically to its cooling, avoided the too high temperature of manual maintenance switch and damaged.
In a specific example, as shown in FIG. 6, C1The filter capacitor C can improve the feedback stability of the variable resistor 1111One terminal of is connected with a reference voltage VREFFilter capacitor C1The other end of the filter is connected with a voltage dividing resistor and a filter capacitor C1In parallel with the variable resistor 111, wherein, as shown in the figure, a voltage dividing resistor RRefThe NTC is a variable resistor 111 as a voltage division reference resistor. Zener diode D1A voltage regulator diode D for providing stable reference voltage for the detection circuit 112 and preventing pulse and spike voltage damage1Cathode and capacitor C1One end of the anode is connected with the anode.
The switching tube 131 is an MOS tube, for example, Q in fig. 7 is the switching tube 131, a gate of the MOS tube is connected to the variable resistor 111, a source of the MOS tube is connected to the heat dissipation assembly 120, a drain of the MOS tube is electrically connected, and a working principle thereof is as follows: along with the rise of the temperature, when the resistance of the variable resistor 111 is reduced to a certain value, the grid voltage of the switch tube 131 is raised, so that the switch tube 131 is triggered to be conducted, the heat dissipation assembly 120 is further connected, at the moment, the switch tube 131 is located in an amplification area, the current does not reach the maximum, the energy consumption of the heat dissipation assembly 120 is low, along with the rise of the temperature to a higher value, the resistance value of the variable resistor 111 continuously drops, the grid voltage of the switch tube 131 continuously rises, at the moment, the switch tube 131 enters a saturation area, the current reaches the maximum, and the heat dissipation assembly 120 runs at full power, so that a better heat dissipation effect is achieved. When the temperature is low, the resistance of the variable resistor 111 is high, and the gate voltage of the switching tube 131 decreases to a certain value, the switching tube 131 is turned off, and the power supply of the heat sink 120 is cut off to stop heat dissipation.
Further, a normally closed switch is provided between the MOS transistor and the variable resistor 111, so that the heat dissipation assembly 120 can be automatically controlled to be turned on and off when the normally closed switch is closed.
Further, as shown in fig. 6, the method further includes: AD conversion circuit 150, optical coupling isolation component 160, and amplifier component 170. Wherein one end of the amplifier module 170 is connected to the detection module 112. One terminal of the ADC conversion circuit 150 is connected to the other terminal of the amplifier block 170. The optical coupling isolation assembly 160 is located between the AD conversion circuit 150 and the battery management system 140, wherein the normally closed switch is controlled by the battery management system 140. In other words, the battery management system 140 can control the on/off of the normally closed switch, thereby further improving the safety and reliability of the temperature control circuit of the manual maintenance switch.
In the above description, the heat dissipation assembly 120 may be a fan, the rotation speed of the fan depends on the resistance of the variable resistor 111, and the rotation speed of the fan may be fed back to the battery management system 140, so that the battery management system 140 monitors the operation condition of the heat dissipation assembly 120 in real time.
The trend of the resistance of the variable resistor 111 with temperature is shown in fig. 8, that is: as the temperature increases, the resistance of the variable resistor 111 rapidly decreases, and conversely, the resistance rapidly increases, and the variable resistor 111 can output the voltage V through the voltage dividing circuit, and the voltage distribution relationship of the voltage dividing circuit is shown in fig. 9.
As shown in fig. 5, an AD conversion circuit 150 is disposed between the battery management system 140 and the detection circuit 112, and the AD conversion circuit 150 is a digital-to-analog conversion circuit and can convert the voltage V output by the variable resistor 111 through the voltage division circuit into a digital quantity.
Further, the manual maintenance switch further comprises a prompting component, the prompting component is connected with the processing component 130, and when the processing component 130 determines that the temperature of the manual maintenance switch is higher than the threshold value according to the voltage of the variable resistor, a user is prompted through the prompting component. For example: the driver is prompted to decelerate or stop the vehicle so that the temperature of the manual maintenance switch can be reduced, and damage caused by working in a high-temperature environment during the time can be avoided.
The working principle of the temperature control circuit of the manual maintenance switch is as follows: because the resistance value of the variable resistor 111 changes along with the change of the temperature, the detection circuit 112 monitors the change of the temperature by detecting the voltage of the variable resistor 111 in real time, and transmits the voltage output by the variable resistor 111 through the voltage division circuit to the processing component 130 through amplification, digital-to-analog conversion and electrical isolation, when the processing component 130 determines that the temperature of the manual maintenance switch is higher than the threshold value according to the voltage of the variable resistor 111, the heat dissipation component 120 is controlled to be started for heat dissipation treatment, and meanwhile, a user can be prompted to take corresponding measures to avoid danger through the prompt component. In addition, the switching tube 131 can automatically control the on and off of the heat dissipation assembly 120, and adjust the rotation speed of the heat dissipation assembly 120 according to the resistance of the variable resistor 111, thereby achieving heat dissipation.
The resistance value of the variable resistor 111 changes with the change of the temperature, so that the current temperature of the corresponding manual maintenance switch can be determined according to the current resistance value of the variable resistor 111, and therefore, the threshold value refers to the highest temperature that the manual maintenance switch can normally work without fusing or a temperature value around the highest temperature, and the threshold value can be obtained by pre-calibration according to experiments.
According to the temperature control circuit of the manual maintenance switch, the temperature of the manual maintenance switch can be monitored, heat dissipation is carried out when the temperature of the manual maintenance switch is too high, abnormal power supply caused by overheating and fusing of the manual maintenance switch is avoided, and the reliability of high-voltage power supply of a vehicle is improved.
Further, an embodiment of the invention discloses a vehicle, which comprises the temperature control circuit of the manual maintenance switch according to the embodiment. This vehicle can monitor manual maintenance switch's temperature to dispel the heat when manual maintenance switch's temperature is too high, avoid manual maintenance switch self overheated fusing and lead to the power supply unusual, and then, improve the reliability of the high voltage power supply of vehicle.
In addition, other configurations and functions of the vehicle according to the embodiment of the present invention are known to those skilled in the art, and will not be described herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are used in a broad sense, and may be, for example, mechanically or electrically connected, or may be connected by two elements, directly or indirectly through an intermediate medium, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A temperature control method for a manual maintenance switch is characterized by comprising the following steps:
detecting the heat productivity of the manual maintenance switch;
judging whether the manual maintenance switch has a risk of false fusing according to the heat productivity of the manual maintenance switch;
and if so, radiating the manual maintenance switch and/or entering a safety mode.
2. The method for controlling the temperature of a manual service switch according to claim 1, wherein said dissipating heat from said manual service switch and/or entering a safety mode comprises:
control activation of a heat sink assembly to dissipate heat from the manual service switch, and/or,
the vehicle is forced to slow down, or the driver is prompted to slow down or stop.
3. A temperature control system for a manual service switch, comprising:
the detection module is used for detecting the heat productivity of the manual maintenance switch;
the judging module is used for judging whether the manual maintenance switch has the risk of mistaken fusing according to the heat productivity of the manual maintenance switch;
and the control module is used for radiating the manual maintenance switch and/or entering a safety mode when the manual maintenance switch has fusing risk.
4. The manual service switch temperature control system of claim 3, wherein the control module is configured to:
control activation of a heat sink assembly to dissipate heat from the manual service switch, and/or,
the vehicle is forced to slow down, or the driver is prompted to slow down or stop.
5. A temperature control circuit for a manual service switch, comprising:
the detection assembly is used for detecting the temperature of the manual maintenance switch;
the heat dissipation assembly is used for adjusting the temperature of the manual maintenance switch;
and the processing assembly is respectively connected with the detection assembly and the heat dissipation assembly so as to start or close the heat dissipation assembly according to the temperature of the manual maintenance switch.
6. The manual service switch temperature control circuit of claim 5, wherein the detection assembly comprises:
the device comprises a variable resistor with the resistance value changing along with the change of the temperature of the manual maintenance switch and a divider resistor connected with the variable resistor in series, wherein one end of the processing assembly is connected between the variable resistor and the divider resistor so as to acquire the voltage of the variable resistor.
7. The manual service switch temperature control circuit of claim 6, wherein the processing component comprises:
the control end of the switch tube is connected with the variable resistor, one end of the switch tube is connected with working voltage, the other end of the switch tube is connected with the radiating component, the control end is influenced by the voltage of the variable resistor to control the connection and disconnection of one end and the other end of the switch tube, and the radiating component is automatically started when the switch tube is connected.
8. The temperature control circuit of the manual service switch according to claim 6 or 7, further comprising:
a filter capacitor, one end of which is connected with a reference voltage, the other end of which is connected with the divider resistor, the filter capacitor is connected with the variable resistor in parallel, and/or,
and the cathode of the voltage stabilizing diode is connected with one end of the variable resistor, and the anode of the voltage stabilizing diode is grounded.
9. The manual service switch temperature control circuit of claim 7, wherein a normally closed switch is disposed between the switching tube and the variable resistor.
10. A vehicle, characterized by comprising: temperature control circuit of a manual service switch according to any of claims 5-9.
CN201811277814.4A 2018-10-30 2018-10-30 Temperature control method and system of manual maintenance switch and vehicle Pending CN111128630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811277814.4A CN111128630A (en) 2018-10-30 2018-10-30 Temperature control method and system of manual maintenance switch and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811277814.4A CN111128630A (en) 2018-10-30 2018-10-30 Temperature control method and system of manual maintenance switch and vehicle

Publications (1)

Publication Number Publication Date
CN111128630A true CN111128630A (en) 2020-05-08

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Application Number Title Priority Date Filing Date
CN201811277814.4A Pending CN111128630A (en) 2018-10-30 2018-10-30 Temperature control method and system of manual maintenance switch and vehicle

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