Control system of vehicle unit room heat dissipation device

Abstract

The invention discloses a control system of a vehicle unit room heat dissipation device, and relates to the technical field of unit room heat dissipation. First to fourth branches are connected in parallel between positive and negative electrodes of a unit power supply; the first branch circuit comprises a motor, a first contact of a power-off time-delay relay, and second to fifth contacts of an intermediate relay. The first contact is connected between the positive electrode of the power supply and the second contact, the second contact is connected between the first contact and the positive electrode of the motor, the third contact is connected between the first contact and the negative electrode of the motor, the fourth contact is connected between the positive electrode of the motor and the negative electrode of the unit power supply, and the fifth contact is connected between the negative electrode of the motor and the negative electrode of the unit power supply; the second branch comprises coils of a unit direct-current main switch and an electromagnetic switch which are connected in series; the third branch comprises a coil of the intermediate relay; the fourth branch comprises a coil of a power-off delay relay; and a sixth contact is connected between the second branch and the third branch. The control convenience of the shutter in the heat dissipation device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation in a vehicle unit room, and in particular to a control system for a heat dissipation device in a vehicle unit room. Background Art

[0002] The vehicle unit room includes important equipment such as the engine and control panel. These equipment will generate heat when working, but excessive heat will affect the normal operation of the equipment. Therefore, the unit room needs to maintain a normal temperature. When the equipment in the unit room is in operation, the shutters of the unit room need to be opened to dissipate heat in the unit room. When the equipment in the unit room is in a paused state, the shutters of the unit room can be closed again to achieve the purpose of maintaining a normal temperature in the unit room.

[0003] At present, the working state of the heat dissipation device in the vehicle unit room is controlled by the DC main switch of the unit. When the DC main switch of the unit is closed, the entire heat dissipation device starts to work. When the DC main switch of the unit is disconnected, the entire heat dissipation device is powered off and stops working. However, if the shutters in the heat dissipation device are also controlled by the DC main switch of the unit, once the DC main switch of the unit is disconnected, the entire heat dissipation device will be powered off, and the shutters will not be able to perform the closing operation. Therefore, a separate switch is set for the shutters to control them, so that when other heat dissipation devices stop working, the shutter closing operation can be performed, but the operation process is increased, resulting in inconvenience in closing the shutters. Summary of the invention

[0004] The purpose of the present application is to provide a control system for a heat dissipation device in a vehicle unit room, so as to solve the problem of inconvenience in closing the shutters described in the background art.

[0005] The control system includes: a vehicle unit power supply, a vehicle unit DC main switch, an electromagnetic switch, an intermediate relay, a power-off delay relay and a motor of an electric push rod;

[0006] A first branch, a second branch, a third branch and a fourth branch connected in parallel are connected between the positive electrode and the negative electrode of the power supply of the unit;

[0007] The first branch includes the contact of the power-off delay relay, the contact of the intermediate relay and the motor; the contact of the power-off delay relay is recorded as the first contact, and the intermediate relay includes four contacts, which are respectively recorded as the second contact, the third contact, the fourth contact and the fifth contact; the first contact, the second contact and the fifth contact are normally open contacts, and the third contact and the fourth contact are normally closed contacts;

[0008] One end of the first contact is connected to the positive pole of the unit power supply, and the other end is connected to the first pin of the second contact; the second pin of the second contact is connected to the positive pole of the motor, the first pin of the third contact is connected to the other end of the first contact, and the second pin of the third contact is connected to the negative pole of the motor; the first pin of the fourth contact is connected to the negative pole of the unit power supply, and the second pin of the fourth contact is connected to the positive pole of the motor; the first pin of the fifth contact is connected to the negative pole of the unit power supply, and the second pin of the fifth contact is connected to the negative pole of the motor;

[0009] The second branch includes the unit DC main switch and the coil of the electromagnetic switch connected in series;

[0010] The third branch includes a coil of the intermediate relay;

[0011] The fourth branch includes the coil of the power-off delay relay;

[0012] A contact of the electromagnetic switch is connected between the second branch and the third branch, which is denoted as a sixth contact and is a normally open contact.

[0013] Optionally, the control system further comprises a shutter, an input end of which is connected to the telescopic rod of the electric push rod.

[0014] Optionally, the first branch further includes a fuse, and the fuse is connected between the positive pole of the unit power supply and one end of the first contact.

[0015] Optionally, the first branch also includes a first limit switch and an open position indicator light, the first limit switch and the open position indicator light are connected in series between the other end of the first contact and the negative pole of the unit power supply, the telescopic rod of the electric push rod corresponds to the first limit switch, and when the telescopic rod is extended into place, the first limit switch is closed.

[0016] Optionally, the first branch also includes a second limit switch and a closed position indicator light, the second limit switch and the closed position indicator light are connected in series between the other end of the first contact and the negative pole of the unit power supply, the telescopic rod of the electric push rod corresponds to the first limit switch, and when the telescopic rod is retracted into place, the second limit switch is closed.

[0017] Optionally, the first contact is connected to a position of the second branch and the third branch close to the positive pole of the unit power supply.

[0018] Optionally, the electric push rods include two, the shutters include two, the motors of the two electric push rods are connected in parallel, and the telescopic rod of each electric push rod is connected to the input end of a shutter.

[0019] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0020] The control system of the vehicle unit room heat dissipation device provided in the embodiment of the present application is additionally provided with a power-off delay relay, the contact of which is provided between the positive pole of the unit power supply and the contact of the intermediate relay, thereby also achieving the purpose of delaying the power-off of each contact of the intermediate relay, so that when the unit DC main switch is turned off, the current can still flow through the two normally closed contacts of the fourth contact and the fifth contact, thereby allowing the motor to continue to work for a predetermined period of time, thereby achieving the purpose of closing the blinds. Therefore, compared with the prior art, the present application controls the motor of the electric push rod and the unit power supply at the same time through the unit DC main switch, and does not need to turn off the motor after turning off the unit DC main switch, thereby improving the convenience of motor control, that is, improving the convenience of blinds control. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of a control system of a heat dissipation device for a vehicle unit room provided in one embodiment of the present application;

[0023] Figure 2 A schematic diagram of a control system of a heat dissipation device for a vehicle unit room provided in one embodiment of the present application;

[0024] Figure 3 A schematic diagram of the connection between an on-position indicator light and an off-position indicator light provided in one embodiment of the present application.

[0025] In the figure: the unit DC main switch QS, the coil KT1 of the power-off delay relay, the first contact KT2, the coil KM1 of the electromagnetic switch, the sixth contact KM2, the coil KA1 of the intermediate relay, the second contact KA2, the third contact KA3, the fourth contact KA4, the fifth contact KA5, the fuse FU; the open position indicator light H1; the closed position indicator light H2; the first limit switch SQ1; the second limit switch SQ2. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] In an exemplary embodiment, Figure 1 As shown, a control system for a vehicle unit room heat dissipation device is provided, the system comprising: a vehicle unit power supply, a vehicle unit DC main switch QS, an electromagnetic switch, an intermediate relay, a power-off delay relay and a motor of an electric push rod.

[0029] A first branch, a second branch, a third branch and a fourth branch connected in parallel are connected between the positive electrode and the negative electrode of the power supply of the unit;

[0030] The first branch includes the contact of the power-off delay relay, the contact of the intermediate relay and the motor; the contact of the power-off delay relay is denoted as the first contact KT2, and the intermediate relay includes four contacts, which are denoted as the second contact KA2, the third contact KA3, the fourth contact KA4 and the fifth contact KA5; the first contact KT2, the second contact KA2 and the fifth contact KA5 are normally open contacts, and the third contact KA3 and the fourth contact KA4 are normally closed contacts;

[0031] One end of the first contact KT2 is connected to the positive electrode of the unit power supply, and the other end is connected to the first pin of the second contact KA2; the second pin of the second contact KA2 is connected to the positive electrode of the motor, the first pin of the third contact KA3 is connected to the other end of the first contact KT2, and the second pin of the third contact KA3 is connected to the negative electrode of the motor; the first pin of the fourth contact KA4 is connected to the negative electrode of the unit power supply, and the second pin of the fourth contact KA4 is connected to the positive electrode of the motor; the first pin of the fifth contact KA5 is connected to the negative electrode of the unit power supply, and the second pin of the fifth contact KA5 is connected to the negative electrode of the motor;

[0032] The second branch includes the unit DC main switch QS and the coil KM1 of the electromagnetic switch connected in series;

[0033] The third branch includes the coil KA1 of the intermediate relay;

[0034] The fourth branch includes the coil KT1 of the power-off delay relay;

[0035] A contact of the electromagnetic switch is connected between the second branch and the third branch, which is denoted as the sixth contact KM2. The sixth contact KM2 is a normally open contact.

[0036] Among them, the vehicle unit room is the unit room of the vehicle generator.

[0037] Among them, the vehicle's unit DC main switch QS can be closed or disconnected manually.

[0038] Among them, the unit power supply is used to power the unit control panel, starting motor, radiator and other equipment in the unit room.

[0039] The telescopic rod of the electric push rod is connected to the input end of the shutter, and is used to drive the shutter to open or close through the electric push rod.

[0040] The electric push rod includes a motor and a telescopic rod. The output end of the motor is mechanically connected to the telescopic rod. When the motor is working, it drives the telescopic rod to extend or contract, thereby driving the input end of the blinds to work, so that the blinds are opened or closed.

[0041] The working process of the control system of the above vehicle unit room heat dissipation device is as follows:

[0042] When the unit DC main switch QS is closed, the coil KM1 of the electromagnetic switch is energized and the sixth contact KM2 is closed;

[0043] After the sixth contact KM2 is closed, the coil KT1 of the power-off delay relay and the coil KA1 of the intermediate relay are energized, so that the first contact KT2 of the power-off delay relay, the second contact KA2 of the intermediate relay and the fifth contact KA5 are closed, and the third contact KA3 and the fourth contact KA4 are disconnected; at this time, the current starts from the positive pole of the unit power supply, flows through the first contact KT2, the second contact KA2, the motor, the fifth contact KA5 in sequence, and then returns to the negative pole of the unit power supply; and at this time, the motor current flows from the positive pole to the negative pole, and the motor of the electric push rod rotates forward, so that the electric push rod pushes the blinds to open;

[0044] When the unit DC main switch QS is disconnected, the coil KM1 of the electromagnetic switch loses power and the sixth contact KM2 is disconnected;

[0045] After the sixth contact KM2 is disconnected, the coil KT1 of the power-off delay relay and the coil KA1 of the intermediate relay lose power, so that the second contact KA2 and the fifth contact KA5 of the intermediate relay are disconnected, the third contact KA3 and the fourth contact KA4 are closed, and the first contact KT2 of the power-off delay relay is disconnected after a predetermined delay;

[0046] Within the predetermined time, the first contact KT2 of the power-off delay relay is disconnected with a delay, that is, the first contact KT2 is still in a closed state. At this time, the current starts from the positive pole of the unit power supply, flows through the first contact KT2, the third contact KA3, the motor, the fourth contact KA4 in sequence, and then returns to the negative pole of the unit power supply; and at this time, the motor current flows from the negative pole to the positive pole, and the motor of the electric push rod reverses, so that the electric push rod pushes the blinds to close;

[0047] When the preset time is reached, the first contact KT2 of the power-off delay relay is disconnected. At this time, the second contact KA2, the third contact KA3, the fourth contact KA4, the fifth contact KA5 and the motor are all in a power-free state and stop working.

[0048] As can be seen from the above content, the control system of the vehicle unit room heat dissipation device provided in the embodiment of the present application is additionally provided with a power-off delay relay, the contact of which is provided between the positive pole of the unit power supply and the contact of the intermediate relay, thereby also achieving the purpose of delaying the power-off of each contact of the intermediate relay, so that when the unit DC main switch QS is turned off, the current can still flow through the two normally closed contacts of the fourth contact KA4 and the fifth contact KA5, thereby allowing the motor to continue to work for a predetermined period of time, thereby achieving the purpose of closing the blinds. Therefore, compared with the prior art, the present application controls the motor of the electric push rod and the unit power supply at the same time through the unit DC main switch QS, and does not need to turn off the motor after turning off the unit DC main switch QS, thereby improving the convenience of motor control, that is, improving the convenience of blinds control.

[0049] Optionally, in another exemplary embodiment of the present application, the control system further comprises a blind, and the input end of the blind is connected to the telescopic rod of the electric push rod, so that the blind is controlled to be opened or closed by the telescopic rod.

[0050] The input end of the blinds may be understood as a control device for controlling the blinds to be opened or closed, and details may be referred to the relevant prior art.

[0051] Alternatively, see Figure 2 In another exemplary embodiment of the present application, the first branch further includes a fuse FU, and the fuse FU is connected between the positive pole of the unit power supply and one end of the first contact KT2.

[0052] Fuse FU is used to protect circuits and equipment from faults such as current overload and short circuit, thereby improving the safety of circuits and equipment.

[0053] Alternatively, see Figure 2 , and combined with Figure 3In another exemplary embodiment of the present application, the first branch further includes a first limit switch SQ1 and an open position indicator light H1, the first limit switch SQ1 and the open position indicator light H1 are connected in series between the other end of the first contact and the negative pole of the unit power supply, the telescopic rod of the electric push rod corresponds to the first limit switch SQ1, and when the telescopic rod is extended to the position, the first limit switch SQ1 is closed.

[0054] It can be seen from the circuit where the above-mentioned fully opened indicator light H1 is located that the current of the fully opened indicator light H1 is also provided by the unit power supply, and the first limit switch SQ1 is closed when the motor rotates to the fully opened position. The motor rotating to the fully opened position can be understood as the motor rotating to enable the telescopic rod of the electric push rod to completely push open the blinds, that is, when the blinds are fully opened, the first limit switch SQ1 is closed, thereby connecting the unit power supply with the fully opened indicator light H1, thereby providing current for the fully opened indicator light H1. That is, when the blinds are fully opened, the fully opened indicator light H1 lights up.

[0055] Alternatively, see Figure 2 , and combined with Figure 3 In another exemplary embodiment of the present application, the first branch also includes a second limit switch SQ2 and a closed position indicator light H2, the second limit switch SQ2 and the closed position indicator light H2 are connected in series between the other end of the first contact and the negative pole of the unit power supply, the telescopic rod of the electric push rod corresponds to the first limit switch SQ1, and when the telescopic rod is retracted into place, the second limit switch SQ2 is closed.

[0056] When the unit's DC main switch QS is disconnected and the power-off delay relay is still within the preset time length, the first contact KT2 of the power-off delay relay is still in a closed state, the first branch is still conducting, but the motor reverses, the telescopic rod contracts, the first limit switch SQ1 is disconnected, and the open position indicator H1 goes out. The contraction of the telescopic rod will also cause the blinds to execute the closing operation. When the telescopic rod is contracted into place, the blinds are closed, the second limit switch SQ2 is closed, and the unit's working power supply supplies power to the closed position indicator H2, and the closed position indicator H2 lights up.

[0057] When the preset time is reached, the first branch is powered off and the shutdown indicator light H2 is turned off.

[0058] For example, when the predetermined time is 30 seconds and closing the blinds takes 10 seconds, the fully closed indicator light H2 may light up for 20 seconds.

[0059] Optionally, the connection relationship between the first limit switch SQ1, the second limit switch SQ2 and the telescopic rod can be: the first limit switch SQ1 and the second limit switch SQ2 are located on both sides of the two ends of the telescopic rod, and are at a predetermined distance from the two ends of the telescopic rod. When the telescopic rod is in the middle position between the first limit switch SQ1 and the second limit switch SQ2, the telescopic rod will not touch the first limit switch SQ1, nor will it touch the second limit switch SQ2.

[0060] In the present application, the extension and contraction of the telescopic rod can be understood as: when the motor rotates forward, the telescopic rod extends, approaches the first limit switch SQ1, and moves away from the second limit switch SQ2, until the telescopic rod touches the first limit switch SQ1, so that the first limit switch SQ1 is closed. Obviously, the second limit switch SQ2 is disconnected at this time; when the telescopic rod approaches the second limit switch SQ2, it will move away from the first limit switch SQ1, so that the first limit switch SQ1 is disconnected and the second limit switch SQ2 is closed.

[0061] Alternatively, see Figure 1 and Figure 2 In another exemplary embodiment of the present application, the first contact KT2 is connected to the second branch and the third branch at a position close to the positive pole of the unit power supply.

[0062] Connecting the first contact KT2 close to the positive pole of the unit power supply can completely disconnect the power supply, so that when the staff touches the wire on the positive pole side of the power supply, there will be no electric shock, thereby improving the safety of the staff.

[0063] Optionally, in another exemplary embodiment of the present application, the electric push rods include two, the shutters include two, the motors of the two electric push rods are connected in parallel, and the telescopic rod of each electric push rod is connected to the input end of a shutter.

[0064] The two shutters are respectively arranged on the upper and lower sides or the left and right sides of the unit room. When the two shutters are opened at the same time, one of the shutters is used for air intake and the other shutter is used for air outlet to improve the heat dissipation efficiency.

[0065] Furthermore, a common control system for two motors and two shutters can also reduce circuit complexity and circuit cost.

[0066] In addition, there is a unit control panel in the unit room, on which are set control buttons for various devices in the unit, which are used to control the working status of various devices in the engine unit. Figure 2 The unit control panel is also connected in parallel between the positive and negative poles of the unit power supply to be powered by the unit power supply. Therefore, the unit DC main switch QS is also the unit control panel switch.

[0067] Also, see Figure 2 , the vehicle's starter motor is also connected in parallel between the positive and negative poles of the unit power supply to be powered by the unit power supply.

[0068] In this application, the unit power supply can be a 24V power supply.

[0069] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A control system for a heat dissipation device in a vehicle unit room, characterized in that: include: The vehicle's unit power supply, the vehicle's unit DC main switch, electromagnetic switch, intermediate relay, power-off delay relay and the motor of the electric push rod; A first branch, a second branch, a third branch and a fourth branch connected in parallel are connected between the positive electrode and the negative electrode of the power supply of the unit; The first branch includes the contact of the power-off delay relay, the contact of the intermediate relay and the motor; the contact of the power-off delay relay is recorded as the first contact, and the intermediate relay includes four contacts, which are respectively recorded as the second contact, the third contact, the fourth contact and the fifth contact; the first contact, the second contact and the fifth contact are normally open contacts, and the third contact and the fourth contact are normally closed contacts; Among them, one end of the first contact is connected to the positive pole of the unit power supply, and the other end is connected to the first pin of the second contact; the second pin of the second contact is connected to the positive pole of the motor, the first pin of the third contact is connected to the other end of the first contact, and the second pin of the third contact is connected to the negative pole of the motor; the first pin of the fourth contact is connected to the negative pole of the unit power supply, and the second pin of the fourth contact is connected to the positive pole of the motor; the first pin of the fifth contact is connected to the negative pole of the unit power supply, and the second pin of the fifth contact is connected to the negative pole of the motor; The second branch includes the unit DC main switch and the coil of the electromagnetic switch connected in series; The third branch includes a coil of the intermediate relay; The fourth branch includes the coil of the power-off delay relay; A contact of the electromagnetic switch is connected between the second branch and the third branch, which is denoted as a sixth contact and is a normally open contact.

2. The control system of the vehicle unit room heat dissipation device according to claim 1, characterized in that: The control system further comprises a shutter, the input end of which is connected to the telescopic rod of the electric push rod.

3. The control system of the vehicle unit room heat dissipation device according to claim 1, characterized in that: The first branch circuit also includes a fuse, which is connected between the positive electrode of the unit power supply and one end of the first contact.

4. The control system of the vehicle unit room heat dissipation device according to claim 3, characterized in that: The first branch also includes a first limit switch and an open position indicator light, which are connected in series between the other end of the first contact and the negative pole of the unit power supply, the telescopic rod of the electric push rod corresponds to the first limit switch, and when the telescopic rod is extended to the position, the first limit switch is closed.

5. The control system of the vehicle unit room heat dissipation device according to claim 4, characterized in that: The first branch also includes a second limit switch and a closed position indicator light, which are connected in series between the other end of the first contact and the negative pole of the unit power supply. The telescopic rod of the electric push rod corresponds to the first limit switch, and when the telescopic rod is retracted into place, the second limit switch is closed.

6. The control system of the vehicle unit room heat dissipation device according to any one of claims 1 to 5, characterized in that: The first contact is connected to the second branch and the third branch at a position close to the positive pole of the unit power supply.

7. The control system of the vehicle unit room heat dissipation device according to claim 2, characterized in that: The electric push rods include two, the shutters include two, the motors of the two electric push rods are connected in parallel, and the telescopic rod of each electric push rod is connected to the input end of a shutter.

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