CN213768316U - Electric vehicle ground power supply system and vehicle approach confirmation control device - Google Patents
Electric vehicle ground power supply system and vehicle approach confirmation control device Download PDFInfo
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- CN213768316U CN213768316U CN202021448211.9U CN202021448211U CN213768316U CN 213768316 U CN213768316 U CN 213768316U CN 202021448211 U CN202021448211 U CN 202021448211U CN 213768316 U CN213768316 U CN 213768316U
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Abstract
The utility model discloses an electric vehicle ground power supply system and vehicle are close and confirm controlling means, the vehicle bottom sets up magnetic signal cover strip, and every power module on the circuit evenly sets up a N magnetic field sensor along vehicle advancing direction order. When the n magnetic field sensors simultaneously detect the magnetic signals of the vehicle, the power supply module is disconnected from the safe cathode, and the power supply is connected with the power supply module; otherwise, the power supply is disconnected from the power supply module, and the power supply module is connected with the safe cathode. The vehicle approaching state can be accurately and surely confirmed, the power supply is timely and safely switched on or off or the safe cathode is connected with the power supply module, and the adverse effects of various mobile communication devices on the safe operation of the vehicle and the safe power supply on the ground are thoroughly avoided. When n takes a value of 2 or more, the false operation caused by the fact that the children play with the magnet block can be further prevented from being influenced by external factors.
Description
Technical Field
The utility model relates to an electric vehicle power supply technical field, concretely relates to electric vehicle ground power supply system and vehicle are close and confirm controlling means.
Background
The ground power supply technology for electric vehicles is gaining favor of urban constructors due to the advantages of canceling overhead network cables, facilitating safe access, being beneficial to urban landscape and the like. The ground power supply technology adopts a contact type switch circuit module to continuously supply power for the vehicle in a segmented mode. When the vehicle approaches, the conductor element of the module is disconnected from the ground potential by means of the action of a magnetic pickup device on the vehicle, and the positive feeder is connected with the conductor element of the module; when the vehicle moves away, the magnetic pickup device on the vehicle is lost, the feeder is disconnected from the conductor element of the module, and the conductor element of the module is restored to the ground potential. The mode has more faults and often has short circuit; the power supply module is directly connected to a power supply system, and fault diagnosis in the system does not have the function of isolating faults of the power supply module; when the module breaks down, the positive contact is adhered, so that the module is positively charged, and the personal safety of a crisis is ensured; when no vehicle runs, a safe negative pole loop is adopted to lead the surface of the module to be grounded; because the safe cathode circuit has many bolted connections, when the bolt corrosion or not hard up, can appear that the safe cathode circuit opens a way, cause the protection inefficacy.
The above problem is better solved in chinese patent application No. 201910804298.4. This patent application has proposed an electric vehicle ground power supply unit, and adjacent power supply rail insulated connection each other constitutes the power supply rail line, to every section power supply rail, sets up: a power switching circuit connected between the positive pole of the power supply and the power supply rail; a safety grounding switch circuit connected between the power supply rail and the safety cathode; and the controller receives the vehicle approach signal and the electric signal of the power supply rail and controls the on-off of the power switch circuit and the safe grounding switch circuit. A power supply is led to a power supply rail by adopting a non-contact electronic switch, and a safe negative electrode safe grounding switch circuit is led in, so that the problem of power supply safety is solved, the power supply rail module only outputs power supply quickly within a certain distance near a vehicle current collector, the vehicle current collector is enabled to be continuously charged, and the power supply rail modules at other positions automatically close the power supply and ensure safe grounding.
In the related art, it is common practice to confirm the approaching state of a vehicle according to communication between an in-vehicle communication device and a control beacon arranged in a line, thereby performing control on the vehicle. However, a large number of mobile communication devices exist on the ground or on the vehicle, which cause interference to the communication between the vehicle-mounted communication device and the control beacon, and the interference can cause misoperation of a power supply system, affect the normal operation of the vehicle and even endanger the personal safety.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an embodiment of the utility model provides an electric vehicle ground power supply system and vehicle are close and confirm controlling means to solve prior art's problem.
On one hand, the utility model discloses a vehicle approach confirmation control device of an electric vehicle ground power supply system,
the magnetic signal covering strip is arranged at the bottom of the vehicle, N magnetic field sensors are uniformly arranged on each power supply module on the circuit along the advancing direction of the vehicle in sequence, N is more than or equal to 2, and the length L of the magnetic signal covering stripMB≥nLSWherein N is more than or equal to 1 and less than N, LSThe distance between adjacent magnetic field sensors is that a power switch is connected between a power supply anode and a power supply module, a safety grounding switch is connected between the power supply module and a safety cathode, the input end of a surface potential detection circuit of the power supply module is connected to the power supply module, and a controller receives a vehicle magnetic signal detected by the magnetic field sensors and an output signal of the potential detection circuit and controls the on-off of the power switch and the safety grounding switch.
Furthermore, m magnetic field sensors are arranged at the end of each adjacent power supply module, and N is more than or equal to m and less than N.
Further, n is 2.
Further, in the power supply module surface potential detection circuit, resistors R1 and R2 are connected in series between the power supply module and the safe cathode, a junction between the resistor R1 and the resistor R2 is connected to the controller, a cathode of the diode D1 is connected to the power supply module, an anode is connected to a safe low-voltage direct-current power supply through the resistor R3, and a junction between an anode of the diode D1 and the resistor R3 is connected to the controller.
The control steps are as follows:
A. when the vehicle approaches the power supply module, the magnetic signal covering strips sequentially cover the magnetic field sensors; when the vehicle is far away from the power supply module, the magnetic signal covering strips of the vehicle sequentially leave the magnetic field sensor;
B. number S of magnetic field sensors for simultaneously measuring magnetic signals of vehiclenWhen the potential of the power supply module is detected to be in a suspended state, the power supply is connected with the power supply module, and N is more than or equal to 1 and less than N;
C. when simultaneously measuring the carsNumber S of magnetic field sensors for magnetic signalnWhen the potential of the power supply module is detected to be in a suspended state, the power supply module is connected with the safe cathode.
On the other hand, the embodiment of the utility model provides a still disclose an electric vehicle ground power supply system, adopt foretell device.
The embodiment of the utility model provides a still disclose a controller, include:
a processor;
a memory; and
a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor, the computer program comprising instructions for controlling a method. The control method comprises the following steps:
A. when the vehicle approaches the power supply module, the magnetic signal covering strips sequentially cover the magnetic field sensors; when the vehicle is far away from the power supply module, the magnetic signal covering strips of the vehicle sequentially leave the magnetic field sensor;
B. number S of magnetic field sensors for simultaneously measuring magnetic signals of vehiclenWhen the potential of the power supply module is detected to be in a suspended state, the power supply is connected with the power supply module, and N is more than or equal to 1 and less than N;
C. number S of magnetic field sensors for simultaneously measuring magnetic signals of vehiclenWhen the potential of the power supply module is detected to be in a suspended state, the power supply module is connected with the safe cathode.
The embodiment of the utility model provides a still disclose a computer readable storage medium, computer readable storage medium has computer program, computer program makes the controller carry out foretell control method.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has at least:
can accurately confirm the approaching state of the vehicle, timely and safely switch on or off the power supply or the connection between the safe cathode and the power supply module, and thoroughly avoid various moving switchesAdverse effects of the communication equipment on the safe operation of the vehicle and the safe power supply on the ground. Length L of magnetic signal cover stripMB≥nLSThe magnetic signal covering strip and the collector shoe can be ensured to cover n small adjacent magnetic field sensors when falling down, so that the power supply module can supply power immediately; when n takes a value of 2 or more, the false operation caused by the fact that the children play with the magnet block can be further prevented from being influenced by external factors. The adjacent power supply modules are respectively provided with m magnetic field sensors arranged at the end part of the opposite side, and when the magnetic signal covering strip advances to the end part of the current power supply module, the adjacent power supply modules immediately enter a power supply state in advance, so that reliable guarantee is provided for smooth and continuous power supply.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a vehicle approach confirmation control device of an electric vehicle ground power supply system according to an embodiment of the present invention.
Fig. 2 is a flowchart of a vehicle approach confirmation control method of the electric vehicle ground power supply system according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the utility model discloses electric vehicle ground power supply system carThe vehicle approaches and confirms the controlling means, and magnetic signal that the vehicle bottom set up covers MB, and every power module length 3m on the circuit evenly sets up 13 magnetic field sensors MS along vehicle advancing direction order, and both ends respectively have 2 magnetic field sensors to arrange in adjacent power module tip position. The distance between adjacent magnetic field sensors is LS33cm, the length of the magnetic signal covering strip is LMB＝67cm。
The power switch PS is connected between the positive pole of the power supply and the power supply module PM, the safety grounding switch ES is connected between the power supply module PM and the safety negative pole, the power supply module surface potential detection circuit PD is connected on the power supply module PM, and the controller receives a vehicle magnetic signal detected by the magnetic field sensor and an output signal of the potential detection circuit and CONTROLs the on-off of the power switch and the safety grounding switch. The power supply module surface potential detection circuit PD, resistance R1 and resistance R2 are connected in series between the power supply module and the safe negative pole, the junction between resistance R1 and resistance R2 is connected to the controller, the negative pole of diode D1 is connected to the power supply module, the positive pole is connected to a safe low-voltage direct current power supply through resistance R3, the junction of the positive pole of diode D1 and resistance R3 is connected to the controller.
Referring to fig. 2, the vehicle approach confirmation control method of the electric vehicle ground power supply system according to the embodiment of the present invention starts initialization. Proceeding to block 1, a vehicle magnetic signal is detected. Entering a judgment frame 2, and judging whether the number Sn of the magnetic field sensors which simultaneously measure the magnetic signals of the vehicle is more than or equal to 2: if yes, go to block A1; otherwise block B1 is entered. At block a1, the safety grounding switch is opened and the power supply module is disconnected from the safety negative electrode. Entering a decision block a2, detecting whether the potential of the power supply module is in a floating state, that is, whether the potential of the junction of the anode of the diode D1 and the resistor R3 is a high potential: if yes, the method enters a block A3, a power switch is switched on, the power supply supplies power to a power supply module, and then the method enters a judgment block 4; otherwise block a5 is entered and the alarm is tripped. At decision block A4, see if the number of magnetic field sensors Sn that are simultaneously measuring the magnetic signals of the vehicle is greater than or equal to 2: if yes, circulating in situ; otherwise block B1 is entered. At block B1, the power switch is opened and the power supply is no longer connected to the power module. Proceeding to block B2, it is detected whether the power supply module is floating, i.e. whether the potential of the junction between the resistors R1 and R2 is low: if yes, the operation enters a block B3, a safety grounding switch is switched on, the power supply module is connected with a safety cathode, and then the operation enters a judgment block B4; otherwise block B5 is entered and the alarm is tripped. At decision block B4, see if the number of magnetic field sensors Sn that are simultaneously measuring the magnetic signals of the vehicle is greater than or equal to 2: otherwise, circulating in situ; block a1 is entered.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to suggest that the scope of the disclosure of embodiments of the present invention (including the claims) is limited to these examples; within the idea of embodiments of the invention, also combinations between technical features in the above embodiments or in different embodiments are possible, and there are many other variations of different aspects of embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. within the spirit and principle of the embodiments of the present invention should be included within the scope of the embodiments of the present invention.
Claims (5)
1. A vehicle approach confirmation control device of an electric vehicle ground power supply system is characterized in that: the magnetic signal covering strip is arranged at the bottom of the vehicle, N magnetic field sensors are uniformly arranged on each power supply module on the circuit along the advancing direction of the vehicle in sequence, N is more than or equal to 2, and the length L of the magnetic signal covering stripMB≥nLSWherein N is more than or equal to 1 and less than N, LSThe distance between adjacent magnetic field sensors is that a power switch is connected between a power supply anode and a power supply module, a safety grounding switch is connected between the power supply module and a safety cathode, the input end of a surface potential detection circuit of the power supply module is connected to the power supply module, and a controller receives a vehicle magnetic signal detected by the magnetic field sensors and an output signal of the potential detection circuit and controls the on-off of the power switch and the safety grounding switch.
2. The apparatus of claim 1, wherein: and m magnetic field sensors are arranged at the end parts of the adjacent power supply modules respectively, and N is more than or equal to m and less than N.
3. The apparatus of claim 1 or 2, wherein: and n is 2.
4. The apparatus of claim 1, wherein: the power supply module surface potential detection circuit, the resistor R1 and the resistor R2 are connected in series between the power supply module and a safe negative electrode, a joint between the resistor R1 and the resistor R2 is connected to the controller, a cathode of the diode D1 is connected to the power supply module, an anode is connected to a safe low-voltage direct-current power supply through the resistor R3, and a joint between an anode of the diode D1 and the resistor R3 is connected to the controller.
5. An electric vehicle ground power supply system characterized by: use of the device of any one of claims 1, 2, 3, 4.
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| CN202021448211.9U CN213768316U (en) | 2020-07-21 | 2020-07-21 | Electric vehicle ground power supply system and vehicle approach confirmation control device |
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| CN202021448211.9U CN213768316U (en) | 2020-07-21 | 2020-07-21 | Electric vehicle ground power supply system and vehicle approach confirmation control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111688545A (en) * | 2020-07-21 | 2020-09-22 | 中车大连机车车辆有限公司 | Electric vehicle ground control system and vehicle approach control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111688545A (en) * | 2020-07-21 | 2020-09-22 | 中车大连机车车辆有限公司 | Electric vehicle ground control system and vehicle approach control method thereof |
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