Control system of vehicle unit room heat dissipation device
By introducing the contacts of power-off delay relays and intermediate relays into the power system of the vehicle's engine room, the automatic closing of the louvers was achieved, solving the problem of inconvenient louver closing and improving the convenience of the control system.
Patent Information
- Application Number
- CN202520317990.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-26
AI Technical Summary
In the existing technology, closing the louvers in the vehicle crew compartment is inconvenient and requires additional operation, making the operation process complicated.
Contacts of a power-off delay relay and an intermediate relay are installed between the positive and negative terminals of the unit's power supply. By delaying the operation of the motor, the louvers can be automatically closed.
The control process of the louvers has been simplified, the ease of controlling the motor and louvers has been improved, and additional operating steps have been avoided.
Smart Images
Figure CN223686354U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicle unit room heat dissipation, in particular to a control system of a vehicle unit room heat dissipation device. BACKGROUND
[0002] The vehicle unit room includes important equipment such as engine and control screen. These equipment will generate heat when working, but excessive heat will affect the normal operation of the equipment. Therefore, the normal temperature needs to be maintained in the unit room. When the equipment in the unit room is in the running state, the louvers of the unit room need to be opened to dissipate heat. When the equipment in the unit room is in the suspended state, the louvers of the unit room can be closed again to maintain the normal temperature of the unit room.
[0003] The working state of the heat dissipation device of the vehicle unit room is controlled by the direct current main switch of the unit. When the direct current main switch of the unit is closed, the entire heat dissipation device starts to work. When the direct current main switch of the unit is opened, the entire heat dissipation device is powered off and stops working. However, if the louvers in the heat dissipation device are also controlled by the direct current main switch of the unit, once the direct current main switch of the unit is opened, the entire heat dissipation device will be powered off, and the louver cannot be closed. Therefore, the louver is controlled by a separate switch, so that the louver can be closed after the other heat dissipation devices stop working. However, the operation process is increased, which makes it inconvenient to close the louver. CONTENT OF THE INVENTION
[0004] The purpose of the present application is to provide a control system of a vehicle unit room heat dissipation device to solve the problem of inconvenient closing of the louver described in the background.
[0005] The control system comprises a unit power supply of a vehicle, a unit direct current main switch of the vehicle, 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 are connected in parallel between the positive and negative poles of the unit power supply.
[0007] The first branch comprises 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 referred to as the first contact. The intermediate relay comprises four contacts, which are referred to 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 with the positive pole of the machine set power supply, and the other end is connected with the first pin of the second contact; the second pin of the second contact is connected with the positive pole of the motor, the first pin of the third contact is connected with the other end of the first contact, and the second pin of the third contact is connected with the negative pole of the motor; the first pin of the fourth contact is connected with the negative pole of the machine set power supply, and the second pin of the fourth contact is connected with the positive pole of the motor; the first pin of the fifth contact is connected with the negative pole of the machine set power supply, and the second pin of the fifth contact is connected with the negative pole of the motor;
[0009] The second branch includes the machine set DC main switch and the coil of the electromagnetic switch connected in series with each other;
[0010] The third branch includes the coil of the intermediate relay;
[0011] The fourth branch includes the coil of the power-off delay relay;
[0012] The contact of the electromagnetic switch is connected between the second branch and the third branch, and is recorded as a sixth contact, the sixth contact being a normally open contact.
[0013] Optionally, the control system further includes a louver, and an input end of the louver is connected with 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 machine set power supply and one end of the first contact.
[0015] Optionally, the first branch further includes a first limit switch and an opening to position indicating lamp, the first limit switch and the opening to position indicating lamp are connected in series between the other end of the first contact and the negative pole of the machine set power supply, the telescopic rod of the electric push rod corresponds to the first limit switch, and the first limit switch is closed when the telescopic rod is extended to position.
[0016] Optionally, the first branch further includes a second limit switch and a closing to position indicating lamp, the second limit switch and the closing to position indicating lamp are connected in series between the other end of the first contact and the negative pole of the machine set power supply, the telescopic rod of the electric push rod corresponds to the first limit switch, and the second limit switch is closed when the telescopic rod is retracted to position.
[0017] Optionally, the first contact is connected at a position close to the positive pole of the machine set power supply of the second branch and the third branch.
[0018] Optionally, the electric push rod comprises two, the shutter comprises 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 one shutter.
[0019] According to the specific embodiments provided in the application, the following technical effects are disclosed.
[0020] The control system of the vehicle unit room heat dissipation device provided by the embodiment of the application increases the power-off delay relay, the contacts of the power-off delay relay are arranged between the positive electrode of the unit power supply and the contacts of the intermediate relay, so that the purpose of delaying the power-off of each contact of the intermediate relay is achieved, and when the unit DC main switch is closed, the current can still flow through the fourth contact and the fifth contact, two normally closed contacts, so that the motor continues to work for a predetermined time, and the purpose of closing the shutter is achieved. Therefore, compared with the prior art, the motor of the electric push rod and the unit power supply are controlled by the unit DC main switch in the application, and the motor does not need to be closed after the unit DC main switch is closed, thereby improving the convenience of motor control, that is, improving the convenience of shutter control. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.
[0022] Figure 1 A control system schematic diagram of a vehicle unit room heat dissipation device provided by an embodiment of the application;
[0023] Figure 2 A control system schematic diagram of a vehicle unit room heat dissipation device provided by an embodiment of the application;
[0024] Figure 3 A connection schematic diagram of an opening to position indicator lamp and a closing to position indicator lamp provided by an embodiment of the application.
[0025] In the figure: unit DC main switch QS, coil KT1 of power-off delay relay, first contact KT2, coil KM1 of electromagnetic switch, sixth contact KM2, coil KA1 of intermediate relay, second contact KA2, third contact KA3, fourth contact KA4, fifth contact KA5, fuse FU; opening to position indicator lamp H1; closing to position indicator lamp H2; first limit switch SQ1; second limit switch SQ2. DETAILED DESCRIPTION
[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.
[0027] The above-mentioned purposes, features and advantages of the present application can be more obvious and easy to understand, and the present application will be further described in detail below with reference to the drawings and specific embodiments.
[0028] In an exemplary embodiment, as shown in Figure 1 A control system of a vehicle unit room heat dissipation device is provided, which comprises a unit power supply of a vehicle, a unit DC main switch QS of the vehicle, 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 are connected in parallel between the positive electrode and the negative electrode of the unit power supply;
[0030] The first branch comprises 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 a first contact KT2, the intermediate relay comprises four contacts, which are denoted as a second contact KA2, a third contact KA3, a fourth contact KA4 and a 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 with the positive electrode of the unit power supply, and the other end is connected with a first pin of the second contact KA2; a second pin of the second contact KA2 is connected with the positive electrode of the motor, a first pin of the third contact KA3 is connected with the other end of the first contact KT2, and a second pin of the third contact KA3 is connected with the negative electrode of the motor; a first pin of the fourth contact KA4 is connected with the negative electrode of the unit power supply, and a second pin of the fourth contact KA4 is connected with the positive electrode of the motor; a first pin of the fifth contact KA5 is connected with the negative electrode of the unit power supply, and a second pin of the fifth contact KA5 is connected with the negative electrode of the motor;
[0032] The second branch comprises the unit DC main switch QS and the coil KM1 of the electromagnetic switch connected in series;
[0033] The third branch comprises the coil KA1 of the intermediate relay;
[0034] The fourth branch includes a coil KT1 of the power-off delay relay;
[0035] The sixth contact KM2 of the electromagnetic switch is connected between the second branch and the third branch, and is a normally open contact.
[0036] The vehicle unit room is a unit room of a vehicle generator.
[0037] The unit DC main switch QS of the vehicle can be manually closed or opened.
[0038] The unit power supply is used to supply power to the unit control panel, the starting motor, the radiator and other devices in the unit room.
[0039] The telescopic rod of the electric push rod is connected with the input end of the louver, and is used to drive the louver to open or close through the electric push rod.
[0040] The electric push rod includes an electric motor and a telescopic rod, the output end of the electric motor is mechanically connected with the telescopic rod, and the electric motor drives the telescopic rod to extend or contract when working, so as to drive the input end of the louver to work, thereby making the louver open or close.
[0041] The working process of the control system of the 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 powered, 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 powered, 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 electrode of the unit power supply, and flows through the first contact KT2, the second contact KA2, the electric motor and the fifth contact KA5 in turn, and then returns to the negative electrode of the unit power supply; and at this time, the electric motor current flows from the positive electrode to the negative electrode, the electric motor of the electric push rod rotates in the positive direction, so that the electric push rod pushes the louver 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 time delay.
[0046] In the predetermined time length, the first contact KT2 of the power-off delay relay is delayed to be opened, that is, the first contact KT2 is still in the closed state, at this time, the current flows from the positive pole of the unit power source, sequentially flows through the first contact KT2, the third contact KA3, the motor, the fourth contact KA4, and then returns to the negative pole of the unit power source; and at this time, the motor current flows from the negative pole to the positive pole, the motor of the electric push rod is reversed, so that the electric push rod pushes the shutter to close.
[0047] When the predetermined time length is reached, the first contact KT2 of the power-off delay relay is opened, 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 the state of no electricity and stop working.
[0048] From the above, it can be seen that the control system of the vehicle unit room heat dissipation device provided by the embodiment of the application increases the power-off delay relay, the contacts of the power-off delay relay are arranged between the positive pole of the unit power source and the contacts of the intermediate relay, so as to achieve the purpose of delaying the power-off of the contacts of the intermediate relay, so that when the unit DC main switch QS is closed, the current can still flow through the two normally closed contacts of the fourth contact KA4 and the fifth contact KA5, and then the motor continues to work for a predetermined time length, so as to achieve the purpose of closing the shutter. Therefore, compared with the prior art, the motor of the electric push rod and the unit power source are controlled by the unit DC main switch QS, so that it is not necessary to close the motor after the unit DC main switch QS is closed, thereby improving the convenience of the motor control, that is, improving the convenience of the shutter control.
[0049] Optionally, in another exemplary embodiment of the application, the control system further comprises a shutter, an input end of the shutter is connected with the telescopic rod of the electric push rod. Thus, the opening or closing of the shutter is controlled by the extension or retraction of the telescopic rod.
[0050] Wherein, the input end of the shutter can be understood as a control device for controlling the opening or closing of the shutter, and specific reference can be made to the related prior art.
[0051] Optionally, referring to Figure 2 In another exemplary embodiment of the application, the first branch further comprises a fuse FU, the fuse FU is connected between the positive pole of the unit power source and one end of the first contact KT2.
[0052] The fuse FU is used to protect the circuit and the device from the influence of current overload and short circuit and the like, and to improve the safety of the circuit and the device.
[0053] Optionally, referring to Figure 2 and combining Figure 3In another example embodiment of the present application, the first branch further comprises a first limit switch SQ1 and an opening-to-position indicator H1, the first limit switch SQ1 and the opening-to-position indicator 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 the first limit switch SQ1 is closed when the telescopic rod is fully extended.
[0054] As can be seen from the circuit in which the opening-to-position indicator H1 is located, the current of the opening-to-position indicator H1 is also provided by the unit power supply, and the first limit switch SQ1 is closed when the motor is rotated to the position. The motor rotating to the position can be understood as the motor rotating to a position at which the telescopic rod of the electric push rod can completely push open the shutter, that is, the first limit switch SQ1 is closed only after the shutter is opened to the position, thereby connecting the unit power supply and the opening-to-position indicator H1, thereby providing the opening-to-position indicator H1 with current. That is, the opening-to-position indicator H1 is lit after the shutter is opened to the position.
[0055] Optionally, referring to Figure 2 , and combining Figure 3 In another example embodiment of the present application, the first branch further comprises a second limit switch SQ2 and a closing-to-position indicator H2, the second limit switch SQ2 and the closing-to-position indicator 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 the second limit switch SQ2 is closed when the telescopic rod is fully retracted.
[0056] When the unit DC main switch QS is turned off, and the power-off delay relay is still within the predetermined time period, the first contact KT2 of the power-off delay relay is still in a closed state, the first branch is still conductive, but the motor is reversed, the telescopic rod is retracted, the first limit switch SQ1 is opened, and thus the opening-to-position indicator H1 is turned off. The telescopic rod retraction will also cause the shutter to perform a closing operation, and when the telescopic rod is retracted to the position, the shutter is closed to the position, the second limit switch SQ2 is closed, the unit working power supply supplies power to the closing-to-position indicator H2, and the closing-to-position indicator H2 is lit.
[0057] When the predetermined time period is reached, the first branch is powered off, and the closing-to-position indicator H2 is also turned off.
[0058] For example, when the predetermined time period is 30 seconds and it takes 10 seconds to close the shutter, the closing-to-position indicator H2 can be lit for 20 seconds.
[0059] Optionally, the connection relationship of the first limit switch SQ1, the second limit switch SQ2 and the telescopic rod can be that the first limit switch SQ1 and the second limit switch SQ2 are located on the two sides of the two end portions of the telescopic rod and are away from the two end portions of the telescopic rod by a predetermined distance, and when the telescopic rod is in the middle position of the first limit switch SQ1 and the second limit switch SQ2, the telescopic rod does not touch the first limit switch SQ1 and does not touch the second limit switch SQ2.
[0060] In the present application, the extension and contraction of the telescopic rod can be understood as follows: when the motor rotates in the positive direction, the telescopic rod extends, approaches the first limit switch SQ1 and is 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, and obviously the second limit switch SQ2 is disconnected at this time; when the telescopic rod approaches the second limit switch SQ2, it is 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] Optionally, referring to Figure 1 and Figure 2 In another exemplary embodiment of the present application, the first contact KT2 is connected at a position close to the positive electrode of the power supply of the unit.
[0062] Connecting the first contact KT2 at a position close to the positive electrode of the power supply of the unit can completely disconnect the power supply, so that when the worker touches the power line on the positive electrode side, there will be no electric shock phenomenon, improving the safety of the worker.
[0063] Optionally, in another exemplary embodiment of the present application, the electric push rod includes two, the louver includes 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 one louver.
[0064] The two louvers are arranged on the upper and lower sides or the left and right sides of the unit chamber, and when the two louvers are opened at the same time, one louver is used for air intake and the other louver is used for air exhaust, so as to improve the heat dissipation efficiency.
[0065] Further, the two motors and the two louvers share a set of control systems, which can also reduce the complexity of the circuit and reduce the cost of the circuit.
[0066] In addition, the unit chamber is also provided with a unit control screen, and the control screen is provided with control buttons of various devices in the unit, which are used to control the working state of various devices in the unit. Referring to Figure 2 , the unit control screen is also connected in parallel between the positive electrode and the negative electrode of the power supply of the unit, so as to be powered by the power supply of the unit, and therefore the unit DC main switch QS is also a switch for the unit control screen.
[0067] In addition, referring to Figure 2 The starting motor of the vehicle is also connected in parallel between the positive and negative poles of the power supply of the unit, to be powered by the power supply of the unit.
[0068] In the present application, the power supply of the unit can be a 24V power supply.
[0069] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist in contradiction, they should be considered as falling within the scope of the present application.
[0070] The principles and implementation modes of the present application are described herein by using specific examples, and the above descriptions of the embodiments are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation modes and application ranges will be changed according to the idea of the present application. In conclusion, the content of the present application should not be understood as a limitation.
Claims
1. A control system for a vehicle crew compartment heat dissipation device, characterized by, The control system comprises: a power supply of a vehicle, a DC main switch of the vehicle, an electromagnetic switch, an intermediate relay, a power-off delay relay and a motor of an electric push rod; a first branch, a second branch, a third branch and a fourth branch connected in parallel between the positive electrode and the negative electrode of the power supply; the first branch comprises 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 called the first contact, the intermediate relay comprises four contacts, respectively called 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; wherein one end of the first contact is connected with the positive electrode of the power supply, and the other end is connected with the first pin of the second contact; the second pin of the second contact is connected with the positive electrode of the motor, the first pin of the third contact is connected with the other end of the first contact, and the second pin of the third contact is connected with the negative electrode of the motor; the first pin of the fourth contact is connected with the negative electrode of the power supply, and the second pin of the fourth contact is connected with the positive electrode of the motor; the first pin of the fifth contact is connected with the negative electrode of the power supply, and the second pin of the fifth contact is connected with the negative electrode of the motor; the second branch comprises the DC main switch and the coil of the electromagnetic switch connected in series; the third branch comprises the coil of the intermediate relay; the fourth branch comprises the coil of the power-off delay relay; a contact of the electromagnetic switch is connected between the second branch and the third branch, and is called the sixth contact, which is a normally open contact.
2. The control system for the vehicle cabin heat dissipation apparatus according to claim 1, characterized by, The control system further comprises a shutter, and an input end of the shutter is connected with the telescopic rod of the electric push rod.
3. The control system for a vehicle cabin heat dissipation device according to claim 1, characterized by, The first branch further comprises a fuse connected between the positive electrode of the power supply and one end of the first contact.
4. The control system for a vehicle crew room heat dissipation apparatus according to claim 3, characterized by, The first branch further comprises a first limit switch and an opening-to-position indicating lamp, which are connected in series between the other end of the first contact and the negative electrode of the power supply; the telescopic rod of the electric push rod corresponds to the first limit switch, and the first limit switch is closed when the telescopic rod is extended to the position.
5. The control system for a vehicle crew room heat dissipation apparatus according to claim 4, characterized by, The first branch further comprises a second limit switch and a closing-to-position indicating lamp, which are connected in series between the other end of the first contact and the negative electrode of the power supply; the telescopic rod of the electric push rod corresponds to the first limit switch, and the second limit switch is closed when the telescopic rod is retracted to the position.
6. The control system for a vehicle crew room heat dissipation apparatus according to any one of claims 1 to 5, characterized by The first contact is connected at a position close to the positive electrode of the power supply between the second branch and the third branch.
7. The control system for a vehicle crew room heat dissipation apparatus according to claim 2, characterized by, The electric push rod comprises two, the shutter comprises two, the motors of the two electric push rods are connected in parallel, and the telescopic rod of each electric push rod is connected with the input end of one shutter.