Door control circuit and vehicle

Abstract

The application belongs to the technical field of vehicles and provides a vehicle door control circuit and a vehicle. The vehicle door control circuit comprises a power supply feedback relay, a delay relay, a key switch and a door control activation relay. The power supply feedback relay is connected in series on a power supply loop between a power battery and a vehicle door controller. The delay relay is connected in series on a power supply loop between a storage battery and the vehicle door controller. The power supply loop between the storage battery and the vehicle door controller further connects the key switch and a normally closed contact of the power supply feedback relay in series. A normally open contact of the delay relay and the door control activation relay are connected in series to form a first series branch, and the first series branch is connected between the positive and negative electrodes of the storage battery. The storage battery of the vehicle is further connected to a signal end of the vehicle door controller through a first normally open contact of the door control activation relay. The application can solve the problem that the vehicle door of a vehicle parked without power cannot be powered on and opened.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicles, and particularly relates to a vehicle door control circuit and a vehicle. BACKGROUND

[0002] When a large passenger vehicle and a rail train are normally operated, the side door is generally automatically opened and closed through electric control, but when the vehicle is parked for a long time without power, the automatic door control function cannot be used due to the failure to activate the door control power supply control loop. If the maintenance personnel want to get on the vehicle, they can only manually unlock the vehicle door using the external emergency unlocking device of the side door and then push the door open to enter the vehicle.

[0003] Although manual unlocking and door opening can conveniently enter the vehicle, manual operation is prone to non-standard operation, which affects the function and reliability of the side door. SUMMARY

[0004] Therefore, the embodiments of the present application provide a vehicle door control circuit and a vehicle to solve the problem that the vehicle door cannot be powered on and opened when the vehicle is parked for a long time without power in the prior art.

[0005] The embodiments of the present application provide a vehicle door control circuit, which is applied to a vehicle. The storage battery and the power battery of the vehicle are connected with a vehicle door controller. The power battery is also connected with the storage battery.

[0006] The vehicle door control circuit comprises:

[0007] A power supply feedback relay, a delay relay, a key switch and a door control activation relay.

[0008] The power supply feedback relay is connected in series on a power supply loop between the power battery and the vehicle door controller. The delay relay is connected in series on a power supply loop between the storage battery and the vehicle door controller. The power supply loop between the storage battery and the vehicle door controller is also connected with the key switch and the normally closed contact of the power supply feedback relay.

[0009] The normally open contact of the delay relay and the door control activation relay are connected in series to form a first series branch, and the first series branch is connected between the positive and negative electrodes of the storage battery. The storage battery of the vehicle is also connected with the signal end of the vehicle door controller through the first normally open contact of the door control activation relay.

[0010] Optionally, the vehicle door control circuit further comprises an interlocking relay.

[0011] The second normally open contact of the door control activation relay and the interlocking relay are connected in series to form a second series branch, and the second series branch is connected between the positive and negative electrodes of the storage battery.

[0012] The normally closed contact of the interlocking relay is connected between the power battery and the storage battery.

[0013] Optionally, the signal end of the door controller comprises a zero-speed signal end and an enable signal end.

[0014] Correspondingly, the first normally open contact of the door control activation relay is connected with the zero-speed signal end and the enable signal end of the door controller through the battery of the vehicle.

[0015] Optionally, the key switch comprises two switches, which are connected in series after being connected in parallel on the power supply circuit between the battery and the door controller, and two same-side connection ends of the two switches are connected with two power supply input ends of the door controller respectively.

[0016] Optionally, a reverse diode is further connected in series on the power supply circuit between the battery and the door controller.

[0017] Optionally, a first circuit breaker is further arranged on the power supply circuit between the battery and the door controller.

[0018] Optionally, a second circuit breaker is further arranged on the connection circuit between the power battery and the battery.

[0019] The second aspect of the embodiment of the present application provides a vehicle comprising the door control circuit according to the first aspect.

[0020] Compared with the prior art, the embodiment of the present application has the following beneficial effects:

[0021] The embodiment of the present application connects the power supply feedback relay in series on the power supply circuit between the power battery and the door controller, connects the key switch and the normally closed contact of the power supply feedback relay in series on the power supply circuit between the battery and the door controller, when the power battery normally supplies power, the normally closed contact of the power supply feedback relay is disconnected, so that the external key control of the door is invalid. When the power battery stops supplying power, the power supply feedback relay loses power, the normally closed contact of the power supply feedback relay is closed, at this time, the door controller and the time delay relay can be powered through the external key, the normally open contact of the time delay relay is closed within a certain time, during which the door control activation relay is powered, the first normally open contact of the door control activation relay is closed, the battery activates the signal end of the door controller to unlock the door control function, so that the staff can open the door through the door controller. The present application can solve the problem that the door of the vehicle parked for a long time without power cannot be powered on and opened. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a structural schematic diagram of a vehicle door control circuit provided by an embodiment of the present application;

[0024] Figure 2 is a structural schematic diagram of a double-decker vehicle door provided by an embodiment of the present application. DETAILED DESCRIPTION

[0025] In the following description, for the purpose of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0026] In order to illustrate the technical solutions of the present application, the following will be described by specific embodiments.

[0027] Currently, electric multiple units all use current collection devices to obtain electric energy from outside the vehicle, and then use in-vehicle conversion and rectification equipment to convert high-voltage electric energy into alternating current and direct current power required by various electrical equipment of the vehicle. Generally, track vehicles are provided with electric storage energy storage devices, such as battery packs. When the vehicle has an external power supply, the charging equipment supplies power to the on-board direct current load and charges the electric storage energy storage device. When the vehicle is disconnected from the external power supply, the high-voltage and direct current charging equipment can no longer supply power to the on-board direct current load. At this time, the electric storage energy storage device releases direct current electric energy to continue to supply part of the on-board direct current load. However, due to the limited energy storage capacity of the electric storage energy storage device, overcharging and overdischarging of the battery pack will shorten the service life of the battery pack. In addition, low operating voltage can also cause damage to some loads. Therefore, the electric storage energy storage device generally only provides short-time electric energy to emergency electrical equipment after the vehicle is disconnected from the power supply. When the voltage of the electric storage energy storage device reaches a safe threshold, the connection with all loads will be cut off, causing all electrical equipment on the vehicle to be disconnected from the power supply. Some vehicles have emergency power supply circuits to supply power to the vehicle door controller. However, when the vehicle is parked for a long time, the emergency power supply circuit will also be disconnected to prevent overdischarging of the battery pack.

[0028] However, in addition to normal power supply line operation, the rail vehicle also includes non-electric storage maintenance in the maintenance workshop. When the vehicle is parked for a long time, the battery can no longer supply power to the low-voltage equipment on the vehicle. At this time, if the operator needs to enter the vehicle for maintenance or drive, since the side doors of the vehicle are in a closed and locked state, the current solution requires manual unlocking of the side doors through an external emergency unlocking device of the side door. The primary function of this unlocking device is to provide a safety function for unlocking the side door in an emergency situation when the door fails or the vehicle is involved in an accident. If this safety function is frequently used in non-essential scenarios, the reliability of this function in emergency situations will inevitably be reduced.

[0029] Therefore, when the vehicle is parked without external power supply, considering that the vehicle is parked for a long time, such as several days or even longer in a parking lot, how to enable the vehicle to maintain the automatic door opening and closing function without external power supply and improve the work convenience of maintenance and crew personnel is a problem that needs to be solved.

[0030] The existing technology I uses a hierarchical management cut-off scheme for the load of the vehicle-mounted battery after the vehicle disconnects the external high-voltage power supply, prolongs the power supply time of important loads, and manages part of the door control units of the vehicle as the highest level load according to the importance of the load. That is, after the electrical circuit cuts off other loads through a contactor or a circuit breaker, the battery only supplies power to individual door control units. The door control can obtain continuous power supply for about 50 hours. The disadvantage of the existing technology I is that although the electrical availability of part of the door control units can be prolonged by cutting off other loads, the design still continuously consumes the battery power even when the door is not needed to be opened and closed, thereby limiting the time length of the electrically operated door opening and closing. Because the vehicle can be parked for a longer time, this scheme can only realize the electrically operated door opening function for a longer time, which is a non-ideal solution.

[0031] Therefore, the embodiment of the present application provides a vehicle door control circuit applied to a vehicle, which can still realize electrically operated door opening when the vehicle is parked for a long time without power supply. The battery and the power battery of the vehicle are connected with the vehicle door controller, and the battery and the power battery can independently supply power to the vehicle door controller. The power battery is also connected with the battery, and the power battery can also charge the battery.

[0032] Referring to Figure 1 The vehicle door control circuit of the embodiment includes a power supply feedback relay 45-K10, a delay relay 80-K0X, a key switch, and a door control activation relay 80-K0Y.

[0033] The power supply feedback relay 45-K10 is connected in series in the power supply circuit between the power battery and the door controller, the time delay relay 80-K0X is connected in series in the power supply circuit between the storage battery and the door controller, and the key switch and the normally closed contact of the power supply feedback relay 45-K10 are also connected in series in the power supply circuit between the storage battery and the door controller. The normally open contact of the time delay relay 80-K0X and the door control activation relay 80-K0Y form a first series branch. In one embodiment, the first series branch can be directly connected between the positive and negative poles of the storage battery, or the first series branch can also be connected in parallel with the door controller as shown in Figure 1

[0034] In addition, the storage battery of the vehicle is also connected to the signal end of the door controller through the first normally open contact of the door control activation relay 80-K0Y. As a possible implementation, the signal end of the door controller can include a zero speed signal end 25 and an enable signal end 34, and correspondingly, the storage battery of the vehicle is connected to the zero speed signal end and the enable signal end through the first normally open contact of the door control activation relay 80-K0Y, respectively.

[0035] In the embodiment, when the vehicle is powered by the high voltage of the power battery and the in-vehicle power supply is normal, the door controller is powered by the normal power supply circuit, at this time the power supply feedback relay 45-K10 is powered, so the normally closed contact of the power supply feedback relay 45-K10 is open, and since the contact is connected in series in the power supply circuit between the storage battery and the door controller, the use of the external key to control the door is invalid. At this time, although the power battery will power the door controller through the normal power supply circuit, since there is no zero speed signal and no enable signal when the vehicle is running, the external key cannot open the door, thereby ensuring the safety when the vehicle is running.

[0036] When the vehicle is stored for a long time without power, the vehicle is stationary, the in-vehicle normal power supply circuit is disconnected, and the normally closed contact of the power supply feedback relay 45-K01 is closed. When the operator needs to enter the vehicle, the key switch can be closed by the external mechanical key at this time, and the normally open contact of the time delay relay 80-K0X remains closed for 90 seconds during which the door control activation relay 80-K0Y is powered, the normally open contact of the door control activation relay is closed, and the zero speed signal 25 and the enable signal 34 are activated, and the vehicle controller is unlocked.

[0037] Since the start-up time of the DCU (vehicle controller) power supply is about 15 seconds, the 90-second delay can ensure that the DCU power supply is powered on. Moreover, the normally open contact of the time delay relay 80-K0X is automatically disconnected after 90 seconds, so that the storage battery no longer supplies power to the door controller, effectively saving the power of the storage battery.

[0038] ​At this point, the three major elements required for the electric door opening have been powered on, including the DCU power supply, the zero speed signal, and the enable signal, and the vehicle door can be controlled to be opened electrically through the vehicle door controller.

[0039] It can be seen that, by means of the power supply feedback relay connected in series between the power supply circuit between the power battery and the vehicle door controller, the key switch and the normally closed contact of the power supply feedback relay are connected in series between the power supply circuit between the storage battery and the vehicle door controller, when the power battery normally supplies power, the normally closed contact of the power supply feedback relay is disconnected, so that the external key control of the vehicle door is invalid. When the power battery is disconnected, the power supply feedback relay loses power, the normally closed contact of the power supply feedback relay is closed, the vehicle door controller and the delay relay can be controlled by the external key to be powered on, the normally open contact of the delay relay is closed within a certain time, during which the door control activation relay is powered on, the first normally open contact of the door control activation relay is closed, the signal end of the storage battery activates the vehicle door controller to unlock the vehicle door control function, and the vehicle door can be opened by the vehicle door controller. The application can solve the problem that the vehicle door cannot be powered on and opened when the vehicle is parked for a long time without power.

[0040] As a possible implementation, refer to Figure 1 As shown in the figure, the vehicle door control circuit further comprises an interlocking relay 80-Q02.

[0041] The second normally open contact of the door control activation relay 80-K0Y and the interlocking relay 80-Q02 are connected in series to form a second series branch, and the second series branch is connected between the positive and negative poles of the storage battery.

[0042] The normally closed contact of the interlocking relay 80-Q02 is connected between the power battery and the storage battery.

[0043] In this embodiment, in order to save the electric energy of the storage battery and ensure the safety of vehicle operation, an interlocking circuit is also designed. When the door control activation relay 80-K0Y is powered on, the second normally open contact of the door control activation relay 80-K0Y is closed, at this time, the interlocking relay 80-Q02 is powered on, the normally closed contact between the power battery and the storage battery is disconnected, which effectively prevents the storage battery from supplying power to other unnecessary loads and saves the electric energy of the storage battery. Another function of the interlocking circuit is to prevent the vehicle from being opened by someone from outside the vehicle through the key activation of the vehicle door controller when the vehicle is normally powered, thereby ensuring the safety of vehicle operation.

[0044] As a possible implementation, refer to Figure 1 As shown in the figure, the key switch comprises two switches, the two switches are connected in parallel and then connected in series in the power supply circuit between the storage battery and the vehicle door controller, and the two same side connection ends of the two switches are connected with the two power supply input ends of the vehicle door controller.

[0045] In the embodiment, the key switch can be a self-resetting key switch, which comprises a switch 1 and a switch 3, and is connected to the ports 14 and 15 of the door controller respectively. When the key is operated to set the key switch to the door opening position (the switch 1 is opened and the switch 3 is closed), the door controller is activated for 90 seconds, and the switch automatically returns to the neutral position (the switch 1 is closed and the switch 3 is opened). When the key switch is operated again from the neutral position to the door opening position, the operation is a normal door opening instruction, and the door controller automatically opens the door according to the instruction, and activates the delay relay 80-K0X for another 90 seconds of delay, and after the delay, the battery supply circuit is automatically disconnected, thereby reducing the battery loss to the maximum extent.

[0046] In summary, the design of the electric door opening mainly includes twice operations of the outside door key. The first operation is to activate the battery supply and establish a 90-second self-holding circuit for the door controller. The second operation is the door opening operation, and the door controller is controlled to open the door according to the instruction. After the maintenance is completed, the staff can control the key switch to the door closing position (the switch 1 is opened and the switch 3 is opened), so as to lock the vehicle.

[0047] As a possible implementation manner, referring to Fig. 1, Figure 1 As shown, a reverse diode is connected in series in the power supply circuit between the battery and the door controller, so as to protect the circuit.

[0048] As a possible implementation manner, referring to Fig. 1, Figure 1 As shown, a first circuit breaker 80-F01 is arranged in the power supply circuit between the battery and the door controller, so as to protect the circuit.

[0049] As a possible implementation manner, referring to Fig. 1, Figure 1 As shown, a second circuit breaker 80-F09 is arranged in the connection circuit between the power battery and the battery, so as to protect the circuit.

[0050] As a possible implementation manner, referring to Fig. 1, Figure 1 As shown, a third circuit breaker 32-F03 is further connected to the output end of the battery, so as to cut off the battery and protect the circuit.

[0051] The circuit design of the present application can activate the battery in the vehicle to supply power to the door controller through the key only when the door needs to be opened, and form a self-holding circuit through a 90-second time relay, so as to ensure that the door controller is powered for a short time, thereby realizing the function of electric door opening and solving the problems existing in mechanical door opening. Moreover, since the battery is activated to supply power to the corresponding door controller only when the vehicle is not powered and the personnel need to enter the vehicle, the power consumption is extremely small, and the electric door opening can still be realized even if the vehicle is parked for a long time.

[0052] In one example, referring to Fig. 1,Figure 2 As shown, each of the double-deck passenger cars has 8 side doors for passengers to get on and off the vehicle, four of which (doors 1, 2, 3 and 4) are located at the A end and the B end of the vehicle, two on each side, symmetrically arranged to adapt to both high and low platforms, and the other four (doors 5, 6, 7 and 8) are located at the quarter point of the vehicle, two on each side, symmetrically arranged and only used for high platforms.

[0053] Since the problem solved by the present application is that the driver or a small number of maintenance personnel get on the vehicle when the vehicle is not powered or the vehicle is parked for a long time and the doors are locked, only one of the doors needs to be opened, but considering the randomness of the direction in which the vehicle is parked or the position where the personnel get on, one door on each side can be designed to be activated and opened, for example, the 3rd door and the 4th door next to the right side of the B end and the left side. A switch door key lock is arranged outside each of the 3rd door and the 4th door, and the main function of the key lock is to be used for opening the door from the outside when the vehicle is not powered, and only the local door can be operated. The 3rd door and the 4th door are respectively designed with two sets of door control circuits which are completely the same in principle, and independent control can be realized by operating the key lock of the 3rd door or the 4th door.

[0054] The embodiment of the present application has the following advantages:

[0055] (1) The existing external door key opening function is integrated to activate the battery power supply circuit of the DCU, which reduces the purchase and installation work of other schemes such as separately increasing a door control independent power supply and the like.

[0056] (2) The design idea of a 90-second time delay relay is adopted to minimize the consumption of the battery power, thereby maximizing the number of times of opening and closing the door when the vehicle is not powered, and realizing that the electrically operated door can still be used for a long time parked vehicle. And since the battery power supply circuit is activated only when needed, the continuous load discharge of the battery is avoided, and the service life of the battery is prolonged.

[0057] (3) The vehicle side door can be electrically opened, and mechanical unlocking is not needed to open the door, which improves the work efficiency of the staff and reduces the work burden of the staff. Moreover, since the frequency of using the mechanical unlocking is reduced, the number of times of using the steel wire rope of the mechanical unlocking is reduced, the risk of damage of the steel wire rope is reduced, and the cost of replacement and maintenance is reduced.

[0058] (4) The external key is only used for opening and closing the door when the vehicle is not powered, which does not affect the normal power supply and operation of the vehicle and the door control power supply control circuit. In addition, the time of the 90-second time delay relay is adjustable, and the delay time can be set according to the actual situation to optimize the use of the battery.

[0059] The embodiment of the present application also provides a vehicle, which comprises the door control circuit as described above.

[0060] The above examples are only used to illustrate the technical solutions of the present application, but not to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those ordinarily skilled in the art should understand: the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A vehicle door control circuit, characterized by comprising: The vehicle door control circuit is applied to a vehicle, and a storage battery and a power battery of the vehicle are connected with a vehicle door controller, and the power battery is also connected with the storage battery; The vehicle door control circuit comprises: a power supply feedback relay, a time delay relay, a key switch and a door control activation relay; The power supply feedback relay is connected in series on a power supply loop between the power battery and the vehicle door controller, the time delay relay is connected in series on a power supply loop between the storage battery and the vehicle door controller, and the key switch and a normally closed contact of the power supply feedback relay are also connected in series on the power supply loop between the storage battery and the vehicle door controller; A normally open contact of the time delay relay and the door control activation relay are connected in series to form a first series branch, and the first series branch is connected between the positive and negative electrodes of the storage battery; the storage battery of the vehicle is also connected with a signal end of the vehicle door controller through a first normally open contact of the door control activation relay; The vehicle door control circuit further comprises an interlocking relay; A second normally open contact of the door control activation relay and the interlocking relay are connected in series to form a second series branch, and the second series branch is connected between the positive and negative electrodes of the storage battery; A normally closed contact of the interlocking relay is connected between the power battery and the storage battery.

2. The vehicle door control circuit of claim 1, wherein, The signal end of the vehicle door controller comprises a zero speed signal end and an enable signal end; Correspondingly, the storage battery of the vehicle is connected with the zero speed signal end and the enable signal end through the first normally open contact of the door control activation relay respectively.

3. The vehicle door control circuit of claim 1, wherein, The key switch comprises two switches, and the two switches are connected in parallel and then connected in series on the power supply loop between the storage battery and the vehicle door controller, and two same side connection ends of the two switches are connected with two power supply input ends of the vehicle door controller respectively.

4. The vehicle door control circuit of claim 1, wherein, A reverse diode is also connected in series on the power supply loop between the storage battery and the vehicle door controller.

5. The vehicle door control circuit of claim 1, wherein, A first circuit breaker is also arranged on the power supply loop between the storage battery and the vehicle door controller.

6. The vehicle door control circuit of claim 1, wherein, A second circuit breaker is also arranged on the connection loop of the power battery and the storage battery.

7. A vehicle characterized by comprising: The vehicle comprises the vehicle door control circuit according to any one of claims 1-6.

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