CN210234883U - Time-delay power-off control circuit and automobile - Google Patents
Time-delay power-off control circuit and automobile Download PDFInfo
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- CN210234883U CN210234883U CN201920996933.9U CN201920996933U CN210234883U CN 210234883 U CN210234883 U CN 210234883U CN 201920996933 U CN201920996933 U CN 201920996933U CN 210234883 U CN210234883 U CN 210234883U
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Abstract
The embodiment of the application provides a time-delay power-off control circuit and an automobile. The control single circuit comprises a first relay, a second relay and a time relay; a coil of the first relay is connected with the positive electrode of the power supply through the starting switch; the other end is connected with the negative electrode of the power supply; a normally open contact of a first relay and a normally open contact of a second relay are connected in parallel and then are connected in series with a first contact of a time relay to form a first branch circuit, one end of the first branch circuit is connected with the positive electrode of a power supply, the other end of the first branch circuit is connected with a first end of a controller, a coil of the time relay is connected in series with a second contact of the first relay to form a second branch circuit, one end of the second branch circuit is connected with any one end of the first branch circuit, and the other end of the second branch circuit is connected with the negative electrode of the power supply; the control circuit provided by the embodiment realizes delayed power-off of the controller based on the delay function of the time relay, the delay time of the time relay can be preset, the delay time is stable, and the application requirement is met.
Description
Technical Field
The application relates to the technical field of automobile control, in particular to a time-delay power-off control circuit and an automobile.
Background
The controller is an important component of the automobile and is used for receiving an enabling signal of the whole automobile so as to realize the operation intention of a driver. When the whole vehicle is powered off, the controller still needs to execute certain operation, including writing running state information and fault information of the vehicle into a nonvolatile storage unit of the controller, or controlling a selective catalytic reduction system to execute urea suck-back, so that the urea is prevented from staying in a tail gas emission pipeline, and the like.
The delayed power-off function of the current controller is generally realized by an energy storage element. Specifically, the energy storage element is charged through the power supply when the whole vehicle is powered on, and the energy storage element outputs working voltage to supply power to the controller when the whole vehicle is powered off, so that delayed power-off of the controller is realized.
In the scheme of realizing delayed power-off based on the energy storage element, the delay time of the controller is determined by the stored energy of the energy storage element and the energy consumption of the controller, and the delay time is unstable, so that the subsequent operation and maintenance work of an operator is inconvenient; after the energy storage element is charged and discharged for multiple times, the stored energy is reduced, the delay time is changed, the situation that the discharge is completed without the completion of data storage or the completion of urea suck-back can occur, and at the moment, the controller is powered off, so that the data loss is easily caused, or the pipeline blockage is easily caused when the urea stays in the tail gas discharge pipeline.
SUMMERY OF THE UTILITY MODEL
The application provides a time delay power-off control circuit and an automobile, which are used for solving the technical problem that the time delay time in the time delay power-off control circuit in the prior art is unstable.
In a first aspect, an embodiment of the present invention provides a time-delay power-off control circuit, which includes a first relay, a second relay, and a time relay;
one end of a coil of the first relay is connected with the starting switch, and the other end of the coil of the first relay is connected with the negative electrode of the power supply; the starting switch is connected with the positive pole of the power supply;
the normally open contact of the first relay and the normally open contact of the second relay are connected in parallel and then are connected in series with the first contact of the time relay to form a first branch circuit, one end of the first branch circuit is connected with the positive electrode of the power supply, the other end of the first branch circuit is connected with the first end of the controller, the second end of the controller is connected with the negative electrode of the power supply, and the third end of the controller is connected with the starting switch;
a coil of the time relay is connected with a second contact of the first relay in series to form a second branch circuit, one end of the second branch circuit is connected with any one end of the first branch circuit, and the other end of the second branch circuit is connected with the negative electrode of the power supply; wherein the first contact and the second contact are of the same contact type;
and one end of a coil of the second relay is connected with any one end of the first branch circuit, and the other end of the coil of the second relay is connected with the negative electrode of the power supply.
In one possible embodiment, the normally open contact of the first relay is connected to the positive pole of the power supply, and the first contact of the time relay is connected to the first end of the controller.
In one possible embodiment, the first contact of the time relay is connected to the positive pole of the power supply, and the normally open contact of the first relay is connected to the first end of the controller.
In one possible embodiment, the coil of the time relay is connected to any end of the first branch, and the second contact of the first relay is connected to the negative pole of the power supply.
In one possible embodiment, the second contact of the first relay is connected to any end of the first branch, and the coil of the time relay is connected to the negative pole of the power supply.
In one possible design, the time relay is an energized time delay relay, the first contact of the time relay is a time delay normally closed contact, and the second contact of the first relay is a normally closed contact.
In one possible design, the control circuit further includes an indicator light;
the indicator light is connected in series between the coil of the time relay and the second contact of the first relay.
In one possible design, the time relay is a power-off delay relay, the first contact of the time relay is a delay normally open contact, and the second contact of the first relay is a normally open contact.
In one possible design, the delay time of the time relay is greater than or equal to 3 minutes.
In a second aspect, an embodiment of the present invention provides an automobile, which includes a controller, a start switch, a power supply, and the delay power-down control circuit of any one of the above first aspects.
The embodiment of the utility model provides a time delay power off control circuit and car is applicable to car controller, and controller time delay power off control circuit includes first relay, second relay and time relay; one end of a coil of the first relay is connected with the starting switch, the other end of the coil of the first relay is connected with the negative pole of the power supply, and the starting switch is connected with the positive pole of the power supply; a normally open contact of a first relay and a normally open contact of a second relay are connected in parallel and then are connected in series with a first contact of the time relay to form a first branch circuit, one end of the first branch circuit is connected with the positive electrode of the power supply, the other end of the first branch circuit is connected with a first end of a controller, a second end of the controller is connected with the negative electrode of the power supply, and a third end of the controller is connected with the starting switch; a coil of the time relay is connected with a second contact of the first relay in series to form a second branch circuit, one end of the second branch circuit is connected with any one end of the first branch circuit, and the other end of the second branch circuit is connected with the negative electrode of the power supply; wherein the first contact and the second contact are of the same contact type; and one end of a coil of the second relay is connected with any one end of the first branch circuit, and the other end of the coil of the second relay is connected with the negative electrode of the power supply. The embodiment of the utility model provides an electric control circuit under time delay, the coil through the first relay of start switch control gets the state of losing electricity, and then the state of getting of losing electricity of the coil of control time relay, time relay's first contact is established ties between power and controller, through the break-make state of time relay's the first contact of state control time relay that gets of losing electricity, the time delay function based on time relay has realized that the controller is delayed to be electrified, time relay's delay time can be according to application demand preset, the delay time is stable; during the time delay power-on period, the controller is still powered by the power supply, and the voltage is stable; after the delay time is reached, the first contact of the time relay acts to disconnect the passage between the power supply and the controller, the power supply of the controller is cut off, and the leakage current caused by the constant electrification of the controller is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram of a delay power-off control circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a delay power-off control circuit according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a delay power-off control circuit according to still another embodiment of the present invention;
fig. 4 is a schematic structural diagram of an automobile according to an embodiment of the present invention.
Reference numerals:
k1: a coil of a first relay;
k11: a normally open contact of the first relay;
k12: a normally closed contact of a first relay;
k2: a coil of a second relay;
k21: a normally open contact of a second relay;
t1: a coil of a power-on time delay relay;
t11: a time-delay normally closed contact;
t2: a coil of a power-off delay relay;
t21: a time-delay normally open contact;
s1: starting a switch;
BAT: a positive electrode of a power supply;
GND: a negative electrode of a power supply;
d, an indicator light;
n1: a first end of a controller;
n2: a second end of the controller;
n3: and a third end of the controller.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Furthermore, references to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like, 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.
The SCR system widely applied to the diesel automobile is used for tail gas treatment, and generally, after the diesel automobile is stopped, the controller controls the selective catalytic reduction system to suck residual urea liquid in a pipeline back to a urea box, so that the residual urea liquid is prevented from remaining in a tail gas discharge pipeline to cause pipeline blockage.
The motor controller is used as an important component of the electric automobile and used for receiving an enabling signal of the whole automobile so as to realize the operation intention of a driver. When the whole vehicle is powered off, the motor controller still needs to perform certain operations, including writing running state information and fault information of the vehicle into a nonvolatile storage unit of the controller.
In summary, in both diesel vehicles and electric vehicles, the controller needs to stop, continue to supply power for a while, and then power down after completing the above operations or other necessary operations.
In the prior art, the delayed power-off work is generally completed by an energy storage element. In the mode of adopting the energy storage element, the energy storage element is charged by the power supply when the whole vehicle is powered on, and the energy storage element outputs working voltage to supply power to the controller after the whole vehicle is powered off, so that delayed power-off of the controller is realized. In the scheme of realizing delayed power-off based on the energy storage element, the delay time of the controller is determined by the stored energy of the energy storage element and the energy consumption of the controller, and the delay time is unstable, so that the subsequent operation and maintenance work of an operator is inconvenient; after the energy storage element is charged and discharged for multiple times, the stored energy is reduced, the delay time is changed, the situation that the discharge is completed without the completion of data storage or the completion of urea suck-back can occur, and at the moment, the controller is powered off, so that the data loss is easily caused, or the pipeline blockage is easily caused when the urea stays in the tail gas discharge pipeline.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic circuit diagram of an embodiment of the delay power-off control circuit of the present invention, as shown in fig. 1, the delay power-off control circuit includes a first relay, a second relay, and a time relay.
One end of a coil K1 of the first relay is connected with a starting switch S1, and the other end of the coil K1 of the first relay is connected with a negative pole GND of a power supply; the start switch S1 is connected to the positive electrode BAT of the power supply. Normally open contact K11 of first relay and the normally open contact K21 parallel connection back of second relay and the first contact series connection of time relay constitute first branch road, and the one end of first branch road is connected with the anodal BAT of power, and the other end is connected with the first end N1 of controller, and the second end N2 of controller is connected with the negative pole GND of power, and the third end N3 of controller is connected with starting switch S1. A coil T1 of the electrified time delay relay is connected with a second contact K12 of the first relay in series to form a second branch circuit, one end of the second branch circuit is connected with any one end of the first branch circuit, and the other end of the second branch circuit is connected with a negative pole GND of a power supply; wherein the contact type of the first contact and the second contact is the same. One end of the coil K2 of the second relay is connected to any one end of the first branch, and the other end is connected to the negative GND of the power supply.
The time relay comprises an electrifying delay relay and a power-off delay relay. In the embodiment shown in fig. 1, the time relay is an energized delay relay, the first contact of the time relay is a delay normally closed contact, and the second contact of the first relay is a normally closed contact.
The power-on delay relay is characterized in that when a coil of the time relay is powered on, each delay contact of the time relay is in a delay setting working state, when the set delay is reached, each delay contact acts, and when the coil of the time relay is powered off, each delay contact instantaneously acts to be restored to an initial state. The time delay contact of the time relay comprises a time delay normally-open contact and a time delay normally-closed contact. Specifically, when a coil of the power-on delay relay is powered on, the delay normally-open contact is closed after a preset delay time, and the delay normally-closed contact is opened after the preset delay time.
Specifically, the first terminal N1 of the controller is a power supply positive terminal of the controller, the second terminal N2 of the controller is a controller control negative terminal, and the third terminal N3 of the controller is an enable signal terminal of the controller.
In practical application, the normally closed delay contact T11 of the time relay is connected in series in the connection loop between the positive electrode BAT of the power supply and the first end N1 of the controller (the power supply positive electrode of the controller), that is, the connection position of each device in the first branch can be adjusted. In one embodiment, the normally open contact K11 of the first relay is connected to the positive electrode BAT of the power supply, and the normally closed delay contact T11 of the time relay is connected to the first terminal N1 of the controller. In another embodiment, the normally closed delay contact T11 of the time relay is connected to the positive electrode BAT of the power supply, and the normally open contact K11 of the first relay is connected to the first terminal N1 of the controller. The first end N1 of the controller is the power supply anode of the controller.
In practical application, the connection position of the second branch and the first branch is adjustable, and the specific implementation is that one end of the second branch is connected with any one end of the first branch, and the other end of the second branch is connected with a negative pole GND of a power supply; any end of the first branch circuit comprises a node connected with the positive electrode BAT of the power supply, a node connected with the first end N1 of the controller, and a node connected with the normally open contact K11 of the first relay and the normally closed delay contact T11 of the time relay. Preferably, one end of the second branch is connected with the first end N1 of the controller, and the other end is connected with the negative pole GND of the power supply, so that after the delayed power-off is completed, the coil T1 of the electrified delayed relay is in a power-off state, the safety and the reliability are realized, the electric leakage caused by the electrification of the time relay can be avoided,
similarly, the connection position of the coil K2 of the second relay to the first branch may be adjusted, and specifically, one end of the coil K2 of the second relay is connected to any one end of the first branch, and the other end is connected to the negative electrode GND of the power supply. Preferably, the coil K2 of the second relay is connected with the first end N1 of the controller, and the other end is connected with the negative electrode GND of the power supply, so that after the delayed power-off is completed, the coil K2 of the second relay is in a power-off state, safety and reliability are achieved, and electric leakage caused by the fact that the second relay is electrified can be avoided.
Optionally, in the second branch, the connection position of the coil T1 of the energized time delay relay and the normally closed contact K12 of the first relay is adjustable. In one embodiment, the coil T1 of the energized time delay relay is connected to either end of the first branch, and the normally closed contact K12 of the first relay is connected to the negative GND of the power supply. In another embodiment, the normally closed contact K12 of the first relay is connected to any end of the first branch, and the coil T1 of the energized time delay relay is connected to the negative GND of the power supply.
The delay time of the time relay is preset according to application requirements, optionally, the delay time of the time relay is greater than or equal to 3 minutes, the catalytic reduction system is guaranteed to suck all residual urea liquid in the pipeline back to the urea box, and the residual urea liquid is prevented from remaining in the tail gas emission pipeline to cause blockage.
In order to more clearly understand the present embodiment, the present embodiment will be described below by way of specific applications. When power is needed to be supplied to the controller through a power supply, an operator operates the starting switch S1 to be powered on, firstly, the coil K1 of the first relay is powered on, the normally open contact K11 of the first relay is closed, the normally closed contact K12 of the first relay is disconnected, and the normally closed contact K12 of the first relay is connected with the coil T1 of the electrified delay relay in series, so that the time relay T1 cannot obtain the power supply and cannot work, and the normally closed contact T11 of the time relay is in a closed conducting state. Therefore, the first branch circuit is conducted, the controller is powered on to work, meanwhile, the coil K2 of the second relay is also powered on to work, the normally closed contact K21 of the second relay is closed, the controller is powered on, and the controller enters a normal working state.
When the vehicle is parked, an operator can leave the vehicle by turning off the starting switch, and the delayed power-off control circuit automatically realizes delayed power-off. The starting switch S1 is turned off, the coil K1 of the first relay loses power, the normally closed contact K12 of the first relay is closed, the second branch circuit is conducted, the coil T1 of the power-on delay relay is electrified, the time relay starts timing, the coil K2 of the second relay continues to be electrified, the normally open contact K21 of the second relay keeps closed, so that the first branch circuit still keeps conducted, and the controller keeps a power supply state. After the preset delay time is reached, the normally closed contact of the time relay is disconnected, the first branch is disconnected, the power supply of the controller is turned off, the controller stops working, the delayed power-off of the controller is realized, the power supply of the controller is cut off, and the leakage current caused by the constant electrification of the controller is avoided.
The embodiment of the utility model provides an electric control circuit under controller time delay, including first relay, second relay and time relay, the setting is between power and controller, through starting switch control break-make. Specifically, one end of a coil of the first relay is connected with a starting switch, the other end of the coil is connected with the negative pole of the power supply, and the starting switch is connected with the positive pole of the power supply; a normally open contact of a first relay and a normally open contact of a second relay are connected in parallel and then are connected in series with a first contact of the time relay to form a first branch circuit, one end of the first branch circuit is connected with the positive electrode of the power supply, the other end of the first branch circuit is connected with a first end of a controller, a second end of the controller is connected with the negative electrode of the power supply, and a third end of the controller is connected with the starting switch; a coil of the time relay is connected with a second contact of the first relay in series to form a second branch circuit, one end of the second branch circuit is connected with any one end of the first branch circuit, and the other end of the second branch circuit is connected with the negative electrode of the power supply; wherein the first contact and the second contact are of the same contact type; and one end of a coil of the second relay is connected with any one end of the first branch circuit, and the other end of the coil of the second relay is connected with the negative electrode of the power supply. In practical application, the power-on and power-off state of a coil of a first relay is controlled through a starting switch, the power-on and power-off state of the coil of a time relay is further controlled, a first contact of the time relay is connected between a power supply and a controller in series, the on-off state of the first contact of the time relay is controlled through the power-on and power-off state of the time relay, delayed power-off of the controller is achieved based on a delay function of the time relay, delay time of the time relay can be preset according to application requirements, and the delay time is stable; during the time delay power-on period, the controller is still powered by the power supply, and the voltage is stable; after the delay time is reached, the first contact of the time relay acts to disconnect the passage between the power supply and the controller, the power supply of the controller is cut off, and electric leakage caused by the fact that the controller is normally electrified is avoided.
Fig. 2 is a schematic structural diagram of a delay power-off control circuit according to another embodiment of the present invention; compared with the embodiment of fig. 1, the type and structure of the time relay are changed, and the contact points of the first branch and the second branch are changed, in this embodiment, the time relay is a power-off delay relay, the first contact of the time relay is a delay normally-open contact, and the second contact of the first relay is a normally-open contact.
The power-off delay relay is characterized in that when a coil of the time relay is electrified, a delay contact of the time relay acts instantaneously, after the coil of the time relay is powered off, each delay contact is in a delay setting working state, and when the set delay reaches, each delay contact is restored to an initial state. The time delay contact of the time relay comprises a time delay normally-open contact and a time delay normally-closed contact. Specifically, when the coil of the power-off delay relay is powered off, the delay normally-open contact is switched off after the preset delay time, and the delay normally-closed contact is switched on after the preset delay time.
As shown in fig. 2, the delay power-down control circuit includes a first relay, a second relay, and a time relay; one end of a coil K1 of the first relay is connected with a starting switch S1, and the other end of the coil K1 of the first relay is connected with a negative pole GND of a power supply; the start switch S1 is connected to the positive electrode BAT of the power supply.
Normally open contact K11 of first relay and the normally open contact K21 parallel connection back of second relay and time relay' S time delay normally open contact T21 series connection constitute first branch road, the one end of first branch road is connected with the anodal BAT of power, the other end is connected with the first end N1 of controller, the second end N2 of controller is connected with the negative pole GND of power, the third end N3 and the starting switch S1 of controller are connected.
A coil T2 of the power-off delay relay is connected with a normally open contact K21 of the first relay in series to form a second branch circuit, one end of the second branch circuit is connected with any one end of the first branch circuit, and the other end of the second branch circuit is connected with a negative pole GND of a power supply; wherein the contact type of the first contact and the second contact is the same.
One end of the coil K2 of the second relay is connected to any one end of the first branch, and the other end is connected to the negative GND of the power supply.
It should be understood that the components of other devices in the first branch and the second branch and the requirement of the connection position of the first branch and the second branch in this embodiment are the same as the requirement of the connection position in the embodiment illustrated in fig. 1, and are not described herein again.
In this embodiment, the time relay is a power-off delay relay. For a clearer understanding of the present embodiment, the following description is given by way of specific application. When the power is needed to be supplied to the controller through the power supply, an operator operates the starting switch S1 to be powered on, firstly, the coil K1 of the first relay is powered on, the normally open contact K11 of the first relay is closed, the second branch circuit is conducted, the normally closed contact K11 of the first relay is connected with the coil T2 of the power-off delay relay in series, so that the time relay T2 is powered on, and the delay normally open contact T21 of the time relay is in a closed conducting state. Therefore, the first branch circuit is conducted, the controller is powered on to work, meanwhile, the coil K2 of the second relay is also powered on to work, the normally closed contact K21 of the second relay is closed, the controller is powered on, and the controller enters a normal working state.
When the automobile is parked, an operator can leave the automobile by turning off the starting switch S1, and the delayed power-off control circuit automatically realizes delayed power-off. The starting switch S1 is turned off, the coil K1 of the first relay loses power, the normally open contact K11 of the first relay is disconnected, the second branch circuit is disconnected, the coil T2 of the power-off delay relay loses power, the time relay starts timing, and as the coil K2 of the second relay continues to get power, the normally open contact K21 of the second relay keeps closed, so the first branch circuit still keeps on, and the controller keeps a power supply state. After the preset delay time is reached, the delay normally-open contact T21 of the time relay is disconnected, the first branch is disconnected at the moment, the power supply of the controller is turned off, the controller stops working, the delay power-off of the controller is realized, the power supply of the controller is cut off, and the leakage current caused by the fact that the controller is normally electrified is avoided.
The embodiment of the utility model provides a controller time delay power off control circuit, time relay's time delay time can be according to application demand preset, and time delay time is stable; during the time delay power-on period, the controller is still powered by the power supply, and the voltage is stable; after the delay time is reached, the normally open contact of the time relay acts to disconnect a path between the power supply and the controller, the power supply of the controller is cut off, and the electric leakage caused by the fact that the controller is normally electrified when the vehicle is parked for a long time is avoided.
Fig. 3 is a schematic structural diagram of a delayed power-off control circuit of a controller according to still another embodiment of the present invention; the embodiment shown in fig. 3 is that an indicator light is added on the basis of the embodiment shown in fig. 1, in this embodiment, the time relay is an energizing delay relay, and as shown in fig. 3, the delay power-off control circuit further includes an indicator light D; the indicator lamp D is connected in series between the coil T1 of the energized delay relay and the second contact (normally closed contact) K12 of the first relay.
Alternatively, the indicator light D may be located at any position of the second branch, and the indicator light D may be connected in series with the coil T1 of the power-on time delay relay, that is, when the coil of the time relay is powered, the indicator light D is turned on. The time relay is circular telegram time delay relay, when circular telegram time delay relay's coil T1 got the electricity, begin the timing, pilot lamp D was bright this moment, when the pilot lamp was bright promptly, it is in the time delay state of cutting off the electricity to show the controller, the time delay arrives, time relay's time delay normally closed contact T11 disconnection, first branch road and second branch road all break off this moment, pilot lamp D goes out, after operating personnel cut off starting switch, the pilot lamp lights, it is in the time delay state of cutting off the electricity to show, after the time of predetermineeing, the pilot lamp goes out, it finishes to show time delay process of cutting off the electricity, the power supply of controller is cut off this moment.
The embodiment of the utility model provides an electric control circuit under controller time delay, the pilot lamp through establishing ties with time relay's coil comes the break-make electric state of time relay's coil, and the operating personnel of being convenient for observes time delay and goes down the electric process to carry out follow-up work, if operating personnel need after the controller time delay is gone down the electricity and is accomplished, when the switch of cut-off power supply maintains, can carry out follow-up work, safe and reliable after observing the pilot lamp and go out.
Fig. 4 is a schematic structural view of an automobile according to an embodiment of the present invention, and as shown in fig. 4, the automobile includes a controller, a start switch, a power supply, and a delayed power-off control circuit according to any of the embodiments.
As shown in fig. 4, one end of the start switch S1 is connected to the positive electrode BAT of the power supply, and the other end is connected to the third terminal N3 (enable signal terminal) of the controller and the delay power-off control circuit, for enabling the controller and the delay power-off control circuit when the start switch is turned off. The delay power-off control circuit is respectively connected with the starting switch S1, the controller and the power supply and is used for communicating the access to enable the power supply to supply power to the controller when the starting switch is closed S1; or the controller is used for starting time delay timing when the starting switch is turned off, and disconnecting the access after the preset time delay time so as to disconnect the power supply and the controller.
When the controller is powered on, an operator only needs to close the starting switch S1, and then the controller can be powered on; after the vehicle is stopped, an operator turns off the starting switch S2, the delay power-off control circuit starts delay timing, and after a preset delay time, the circuit is turned off to disconnect the positive pole of the power supply and the power supply positive pole of the controller, so that the delay time is stable. The controller can be powered off in a delayed mode without extra operation of an operator, operation is convenient, and delay time is stable.
Optionally, the start switch is a T15 key switch.
Alternatively, the controller may be a motor controller of an electric vehicle, or may be a vehicle controller of a diesel vehicle.
The embodiment of the utility model provides a car, including controller, starting switch, power and the time delay that is connected with starting switch, power and controller respectively under the electric control circuit. The on-off state of the time delay power-off control circuit is controlled by the starting switch, the time delay power-off of the controller is realized based on the time delay function of a time relay in the time delay power-off control circuit, the time delay time of the time relay can be preset according to application requirements, and the time delay time is stable; during the time delay power-on period, the controller is still powered by the power supply, and the voltage is stable; after the delay time is reached, the power supply of the controller is cut off, and electric leakage caused by the fact that the controller is electrified constantly is avoided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A time delay power-off control circuit is characterized by comprising a first relay, a second relay and a time relay;
one end of a coil of the first relay is connected with the starting switch, and the other end of the coil of the first relay is connected with the negative electrode of the power supply; the starting switch is connected with the positive pole of the power supply;
the normally open contact of the first relay and the normally open contact of the second relay are connected in parallel and then are connected in series with the first contact of the time relay to form a first branch circuit, one end of the first branch circuit is connected with the positive electrode of the power supply, the other end of the first branch circuit is connected with the first end of the controller, the second end of the controller is connected with the negative electrode of the power supply, and the third end of the controller is connected with the starting switch;
a coil of the time relay is connected with a second contact of the first relay in series to form a second branch circuit, one end of the second branch circuit is connected with any one end of the first branch circuit, and the other end of the second branch circuit is connected with the negative electrode of the power supply; wherein the first contact and the second contact are of the same contact type;
and one end of a coil of the second relay is connected with any one end of the first branch circuit, and the other end of the coil of the second relay is connected with the negative electrode of the power supply.
2. The control circuit of claim 1,
the normally open contact of the first relay is connected with the positive pole of the power supply, and the first contact of the time relay is connected with the first end of the controller.
3. The control circuit of claim 1,
and a first contact of the time relay is connected with the positive pole of the power supply, and a normally open contact of the first relay is connected with the first end of the controller.
4. The control circuit of claim 1,
and a coil of the time relay is connected with any end of the first branch, and a second contact of the first relay is connected with the negative electrode of the power supply.
5. The control circuit of claim 1,
and a second contact of the first relay is connected with any one end of the first branch circuit, and a coil of the time relay is connected with the negative electrode of the power supply.
6. The control circuit of claim 1,
the time relay is an electrified delay relay, a first contact of the time relay is a delay normally closed contact, and a second contact of the first relay is a normally closed contact.
7. The control circuit of claim 6, further comprising an indicator light;
the indicator light is connected in series between the coil of the time relay and the second contact of the first relay.
8. The control circuit of claim 1,
the time relay is a power-off delay relay, the first contact of the time relay is a delay normally open contact, and the second contact of the first relay is a normally open contact.
9. The control circuit of claim 1, wherein the time delay of the time relay is greater than or equal to 3 minutes.
10. An automobile comprising a controller, a start switch, a power supply and a delayed power down control circuit as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996933.9U CN210234883U (en) | 2019-06-28 | 2019-06-28 | Time-delay power-off control circuit and automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996933.9U CN210234883U (en) | 2019-06-28 | 2019-06-28 | Time-delay power-off control circuit and automobile |
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| Publication Number | Publication Date |
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| CN210234883U true CN210234883U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920996933.9U Active CN210234883U (en) | 2019-06-28 | 2019-06-28 | Time-delay power-off control circuit and automobile |
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| Country | Link |
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| CN (1) | CN210234883U (en) |
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