CN110857032A - Vehicle emergency power-off system and vehicle - Google Patents
Vehicle emergency power-off system and vehicle Download PDFInfo
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- CN110857032A CN110857032A CN201810972473.6A CN201810972473A CN110857032A CN 110857032 A CN110857032 A CN 110857032A CN 201810972473 A CN201810972473 A CN 201810972473A CN 110857032 A CN110857032 A CN 110857032A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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Abstract
The invention relates to a vehicle emergency power-off system and a vehicle. The vehicle emergency power-off system comprises an electronic control unit, a time delay relay and a low-voltage power supply for supplying power to the electronic control unit and the time delay relay; the delay relay is connected between the electronic control unit and the low-voltage power supply; when the vehicle is powered off emergently, the low-voltage power supply interrupts the power supply to the time delay relay; the time delay relay after power failure delays and cuts off the power supply of the low-voltage power supply to the electronic control unit; the electronic control unit after the power failure cuts off the high-voltage relay on the vehicle, so that the high-voltage relay can be cut off through the electronic control unit to power off the vehicle when an emergency accident occurs to the vehicle. Further, the vehicle emergency power-off device can avoid arc discharge or damage to high-voltage components caused by the on-load cut-off of the high-voltage relay.
Description
Technical Field
The invention relates to the technical field of vehicle safety, in particular to a vehicle emergency power-off system and a vehicle.
Background
The automobile is an important tool for people to go on daily, and most of the automobiles still use fossil fuel as a power source at present. However, with the environmental deterioration, the greenhouse effect and the energy exhaustion, the promotion of green travel is more and more encouraged. Therefore, development and use of vehicles such as electric vehicles and hybrid vehicles have been promoted.
However, in both the development process and the use process, controlling high voltage in the automobile is an important means for improving the safety performance of the electric automobile. However, in the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the conventional technology cannot timely cut off the high voltage power under the condition that partial functions on the automobile are failed.
Disclosure of Invention
In view of the above, it is necessary to provide an emergency power-off system for a vehicle and a vehicle, which solve the problem that the conventional technology cannot timely cut off the high voltage power in a state that a part of functions of the vehicle are disabled.
In order to achieve the above object, in one aspect, an embodiment of the present application provides a vehicle emergency power-off system, including an electronic control unit, a time delay relay, and a low-voltage power supply for supplying power to the electronic control unit and the time delay relay;
the delay relay is connected between the electronic control unit and the low-voltage power supply;
when the vehicle is powered off emergently, the low-voltage power supply interrupts the power supply to the time delay relay; the time delay relay after power failure delays and cuts off the power supply of the low-voltage power supply to the electronic control unit; the electronic control unit after power off switches off the high voltage relay on the vehicle.
In one embodiment, the system further comprises an on-off control module;
the low-voltage power supply is connected with a coil of the time delay relay through the on-off control module.
In one embodiment, the system comprises a vehicle control unit; the on-off control module is a switch module;
the switch module comprises a first normally closed switch and a normally open switch;
the low-voltage power supply is connected with a coil of the time delay relay through a first normally closed switch; the vehicle control unit is connected with a low-voltage power supply through a normally open switch.
In one embodiment, the system further comprises a power supply integration system, a driving motor system and an air conditioner high-voltage system; the switch module further comprises a second normally closed switch;
and the power supply integration system, the driving motor system and the air conditioner high-voltage system are respectively connected with a low-voltage power supply through a second normally-closed switch.
In one embodiment, the system further comprises an electromechanical coupling controller; the switch module further comprises a third normally closed switch;
the electromechanical coupling controller is connected with a low-voltage power supply through a third normally closed switch.
In one embodiment, the system further comprises an alarm module;
the alarm module is connected with the low-voltage power supply through a normally open switch.
In one embodiment, the short-circuit protection device further comprises a first short-circuit protection unit, a second short-circuit protection unit, a third short-circuit protection unit and a fourth short-circuit protection unit;
the first short-circuit protection unit is connected between the normally open switch and the low-voltage power supply;
the second short-circuit protection unit is connected between the first normally-closed switch and the low-voltage power supply;
the third short-circuit protection unit is connected between the second normally-closed switch and the low-voltage power supply;
the fourth short-circuit protection unit is connected between the third normally-closed switch and the low-voltage power supply.
In one embodiment, the emergency power-off button is further included;
the emergency power-off key is respectively connected with the first normally closed switch and the normally open switch.
In one embodiment, the electronic control unit is a power management system.
In another aspect, the embodiment of the present application further provides a vehicle, including the vehicle emergency power-off system as described above;
and an electronic control unit of the vehicle emergency power-off system is connected with a high-voltage relay on the vehicle.
One of the above technical solutions has the following advantages and beneficial effects:
the vehicle emergency power-off system is constructed by an electronic control unit, a delay relay and a low-voltage power supply for supplying power to the electronic control unit and the delay relay, wherein the delay relay is connected between the electronic control unit and the low-voltage power supply; when the vehicle is powered off emergently, the low-voltage power supply interrupts the power supply to the time delay relay; the time delay relay after power failure delays and cuts off the power supply of the low-voltage power supply to the electronic control unit; the electronic control unit after the power failure cuts off the high-voltage relay on the vehicle, so that the high-voltage relay can be cut off through the electronic control unit to power off the vehicle when an emergency accident occurs to the vehicle. Further, the vehicle emergency power-off device can avoid arc discharge or damage to high-voltage components caused by the on-load cut-off of the high-voltage relay.
Drawings
FIG. 1 is a first schematic diagram of an emergency electrical discharge system of a vehicle according to one embodiment;
FIG. 2 is a second schematic diagram of an emergency electrical discharge system of a vehicle according to one embodiment;
FIG. 3 is a first schematic block diagram of a switch module of an emergency electrical discharge system of a vehicle according to one embodiment;
FIG. 4 is a second schematic diagram of a switch module of an emergency electrical discharge system of a vehicle according to one embodiment;
FIG. 5 is a third schematic diagram of a switch module of an emergency electrical discharge system of a vehicle according to one embodiment;
fig. 6 is a schematic structural diagram of a short-circuit protection unit of a vehicle emergency power-off system in one embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to solve the problem that the conventional technology cannot timely cut off the high voltage power in the state of partial functional failure on the automobile, in one embodiment, as shown in fig. 1, a vehicle emergency power-off system is provided, which includes an electronic control unit 11, a time delay relay 13, and a low voltage power supply 15 for supplying power to the electronic control unit 11 and the time delay relay 13;
the delay relay 13 is connected between the electronic control unit 11 and the low-voltage power supply 15;
when the vehicle is powered off emergently, the low-voltage power supply 15 interrupts the power supply to the time delay relay 13; the time delay relay 13 after power failure delays the power supply of the low-voltage power supply 15 to the electronic control unit 11; the electronic control unit 11 after power-off switches off the high-voltage relay 17 on the vehicle.
The vehicle refers to an automobile using electric energy as part or all of power, for example, an electric automobile and a hybrid electric automobile. The delay relay is used to delay the connection of the electronic control unit to the low voltage power supply for a certain time, for example 500ms (milliseconds), after it loses power. The delay relay is adopted to reserve sufficient time for the vehicle to reduce the load and the current, so that the phenomenon that the high-voltage relay is failed to cut off due to the adhesion of the high-voltage relay when arc discharge occurs or the high-voltage relay is cut off with load, high-voltage components can be seriously damaged, and even the high-voltage components can be punctured, so that the safety of personnel is endangered is avoided.
The low-voltage power supply is provided by the electronic control unit and the time delay relay, in one example, the low-voltage power supply is a 12-volt voltage source, and further, the low-voltage power supply can be directly replaced by a storage battery on the vehicle, so that the production cost of the vehicle and the design cost of the electric automobile emergency power-off device can be saved by using the storage battery on the vehicle to supply power for the vehicle emergency power-off system. Specifically, a control switch is connected between the time delay relay and the low-voltage power supply, and the control switch controls the low-voltage power supply to be switched off or switched on to supply power to the electronic control unit.
And the electronic control unit disconnects the high-voltage relay when the power supply of the low-voltage power supply is lost under the delay control of the delay relay. In one example, the electronic control unit is a power management system. The function of the vehicle emergency power-off system is realized through the power management system, further, the design cost of the vehicle emergency power-off system is reduced, and resources are saved.
The high-voltage relay of the vehicle is used for controlling the on-off of the battery module and the high-voltage junction box on the vehicle. The vehicle controller is a core component of a vehicle, and can realize functions of vehicle fault identification and processing, vehicle network management, vehicle state monitoring, self diagnosis, protection and the like of system working mode control, vehicle energy management and optimization and functionalization.
In each embodiment of the vehicle emergency power-off system, the vehicle emergency power-off system is constructed by an electronic control unit, a delay relay and a low-voltage power supply for supplying power to the electronic control unit and the delay relay, wherein the delay relay is connected between the electronic control unit and the low-voltage power supply; when the vehicle is powered off emergently, the low-voltage power supply interrupts the power supply to the time delay relay; the time delay relay after power failure delays and cuts off the power supply of the low-voltage power supply to the electronic control unit; the electronic control unit after the power failure cuts off the high-voltage relay on the vehicle, so that the high-voltage relay can be cut off through the electronic control unit to power off the vehicle when an emergency accident occurs to the vehicle. Further, the vehicle emergency power-off device can avoid arc discharge or damage to high-voltage components caused by the on-load cut-off of the high-voltage relay.
In one embodiment, as shown in fig. 2, there is provided a vehicle emergency discharging system, comprising an electronic control unit 11, a time delay relay 13, an on-off control module 19, and a low voltage power supply 15 for supplying power to the electronic control unit 11 and the time delay relay 13;
a normally closed switch of the time delay relay 13 is connected between the electronic control unit 11 and the low-voltage power supply 15; the low-voltage power supply 15 is connected with a coil of the time delay relay 13 through an on-off control module 19.
The on-off control module is used for switching off or switching on a low-voltage power supply to supply power to the time delay relay. The control mode of the on-off control module can be selected in various ways, for example, an electronic switch mode can be adopted, and a mechanical switch mode can also be adopted.
After the time delay relay loses the power supply, the normally closed switch is turned off in a time delay mode, and the electronic control unit loses the power supply.
In one specific embodiment, as shown in fig. 3, the vehicle emergency power-off system further includes a vehicle control unit 21; the on-off control module 19 is a switch module 23;
the switch module 23 includes a first normally closed switch 231, a normally open switch 233;
the low-voltage power supply 15 is connected with a coil of the time delay relay 13 through a first normally closed switch 231; the vehicle control unit 21 is connected to the low-voltage power supply 15 through a normally open switch 233.
The switch module is used for switching off or switching on a low-voltage power supply to supply power to the vehicle control unit and the delay relay. The switch module includes a normally open switch and a first normally closed switch, which in one example are ganged, i.e., the first normally closed switch is open while the normally open switch is closed. Further, the vehicle emergency power-off system also comprises an emergency power-off key; the emergency power-off key is respectively connected with the first normally closed switch and the normally open switch. When the emergency power-off is carried out, the emergency power-off key is actuated, the normally open switch is closed, and the first normally closed switch is opened. In actual use, the emergency power-down key is mounted on the vehicle at a location easily accessible to the driver, for example, on the instrument desk or steering wheel, preferably near the double-flashing location of the instrument desk.
The specific working process of the vehicle emergency power-off system can be divided into two situations:
(1) under the condition that the vehicle controller is normal and the function of the vehicle is complete, as shown in fig. 3, when a fault occurs, a user controls the action of the switch module, the D-1 contact and the D-2 contact of the normally-open switch are closed, the vehicle controller is connected with the low-voltage power supply, the vehicle controller detects a level signal of the low-voltage power supply, generates a command for disconnecting the high-voltage relay and sends the command to a battery management system of the vehicle to indicate the battery management system to control the high-voltage relay to be disconnected, and the vehicle controller also generates a component working state switching command and a vehicle load reduction command and sends the command to corresponding components; when the D-1 contact and the D-2 contact of the normally open switch are closed, the A-1 contact and the A-2 contact of the first normally closed switch are disconnected, the time delay relay is disconnected with the low-voltage power supply, the movable contact of the time delay relay is contacted with the normally open contact, the electronic control unit loses power supply, and the high-voltage relay is controlled to be disconnected. In this case, the vehicle control unit and the electronic control unit both send out control commands, and the delay relay executes the control command which arrives first.
(2) Under the condition that the vehicle controller is abnormal or the vehicle function is incomplete, the failure diagnosis function of the vehicle controller is incomplete, an engine stalls in the driving process, the vehicle controller cannot normally send an instruction, the vehicle controller cannot execute the instruction, the whole vehicle has a communication failure or the vehicle function is incomplete, and the like, so that the high-voltage relay cannot be controlled to be disconnected by the vehicle controller, and only the electronic control unit can control the high-voltage relay to be disconnected, as shown in fig. 3, when a failure occurs, a user controls the switch module to act, the A-1 contact and the A-2 contact of the first normally closed switch to be disconnected, the time delay relay is disconnected with the low-voltage power supply, the movable contact of the time delay relay is contacted with the normally open contact, the electronic control unit loses power supply, and the.
Furthermore, the vehicle emergency power-off system also comprises an alarm module connected with the normally-open switch. The alarm module informs a user whether the switch module acts correctly, when the switch module acts correctly, the D-1 contact and the D-2 contact of the normally open switch are connected, the alarm module is powered on, and an alarm is given. Further, the alarm module may be an audio alarm device, an optical alarm device, or the like.
In each embodiment of the vehicle emergency power-off system, a coil of a delay relay is connected with a low-voltage power supply by a first normally closed switch in a switch module, the connection between an electronic control unit and the low-voltage power supply is delayed and disconnected by the delay relay, when the switch module is pressed, the first normally closed switch is disconnected, the power supply of the delay relay is cut off, after the delay is carried out for a certain time, the delay relay disconnects the electronic control unit from a power supply battery, the electronic control unit controls a high-voltage relay to be disconnected when a level signal of the low-voltage power supply is not detected, the whole vehicle power-off of the vehicle is completed, so that the double protection of the vehicle power-off is realized, and in the actual process, when the vehicle cannot be powered off in time due to the fact that a fault fails to send a command of disconnecting the high-voltage relay or a corresponding controlled component fails to execute the command of, the high-voltage relay is disconnected by the electronic control unit, and the vehicle is powered off. Further, the emergency power-off system of the vehicle can avoid arc discharge or damage to high-voltage components caused by the on-load cut-off of the high-voltage relay.
In one embodiment, as shown in fig. 4, the system further includes a power supply integration system 41, a driving motor system 43 and an air conditioning high voltage system 45; the switch module 23 further comprises a second normally closed switch 235;
the power supply integration system 41, the driving motor system 43 and the air conditioner high-voltage system 45 are respectively connected with the low-voltage power supply 15 through a second normally closed switch 235.
And the second normally closed switch controls the disconnection or connection of the low-voltage power supply to supply power to the power supply integrated system, the driving motor system and the air conditioner high-voltage system. The power supply integrated system, the driving motor system and the air conditioner high-voltage system all comprise a dormant state and an awakening state, wherein the power supply integrated system, the driving motor system and the air conditioner high-voltage system are awakened through high level.
The specific working process is as follows: as shown in fig. 4, when the switch module is activated, the B-1 and B-2 contacts of the second normally closed switch are opened, and the power integration system, the driving motor system, and the air conditioner high voltage system lose the wake-up source (the level signal of the low voltage power supply). The power supply integration system integrates a vehicle-mounted charger and a direct current exchanger, and after the wake-up source is lost, the power supply integration system switches the working mode and enters the dormancy from the wake-up state; the driving motor system is used for controlling the motor to work, and after the awakening source is lost, the driving motor system switches the working mode and enters the dormancy from the awakening state, and the motor is controlled to stop working; the air-conditioning high-voltage system controls related high-voltage components in the vehicle to work, and after the awakening source is lost, the air-conditioning high-voltage system switches the working mode and enters the dormancy state from the awakening state to control the related high-voltage components to stop working. It should be noted that the high-voltage components of the vehicle are controlled to be powered down directly through the vehicle emergency power-down system, so that the high-voltage components of the whole vehicle are powered down more quickly, and the damage to the vehicle is reduced as much as possible.
The power supply integrated system is taken as an example to explain the working mode switching process: the operating modes of the power integrated system include a standby mode, a Ready state, a driving state, a failure state, a discharging state (high-voltage power is released through a resistor or other units). Specifically, assuming that the vehicle is driven at a high speed, the high voltage (generally 350 v to 480 v) is applied to the whole vehicle, the working mode of the power integrated system is in a driving state (driving), at this time, due to an accident, the switch module acts, the connection state of the B-1 and the B-2 is switched to a disconnection state, the power integrated system loses a wake-up source, the working mode is immediately switched to a discharge state from the driving state, the electric energy at the high-voltage end of the component is released, the electric energy is released to a certain threshold value, the working mode is switched to a standby state, and then the power integrated system enters a sleep state.
According to the vehicle emergency power-off system, the switch module in the vehicle emergency power-off system is used for controlling the awakening source of the high-voltage components such as the power supply integrated system, the driving motor system and the air conditioner high-voltage system, so that the rapid power-off of the high-voltage components such as the power supply integrated system, the driving motor system and the air conditioner high-voltage system is controlled, the vehicle power-off is rapidly achieved, and the safety of a driver and passengers is guaranteed.
In one embodiment, as shown in FIG. 5, further comprises an electromechanical coupling controller 51; the switch module 23 further includes a third normally closed switch 237;
the electromechanical coupling controller 51 is connected to the low voltage power supply 15 through a third normally closed switch 237.
The electromechanical coupling controller is a high-voltage control part of the gasoline-electric hybrid electric vehicle and is used for controlling the coupling of the electric transmission system and the engine transmission system, and when the vehicle is the gasoline-electric hybrid electric vehicle, the power supply of the electromechanical coupling controller is controlled through a switch module of the vehicle power-off device. When the switch module acts, as shown in fig. 5, the electromechanical coupling controls the C-1 and C-2 contacts of the normally closed switch to be disconnected, the electromechanical coupling controller loses power supply, and the connection between the electric transmission system and the engine transmission system is cut off.
According to the vehicle power-off device, the switch module is used for directly controlling the power supply of the electromechanical coupling controller, so that the connection between the electric transmission system and the engine transmission system is directly controlled to be cut off, the connection between the electric transmission system and the engine transmission system can be rapidly cut off when a vehicle breaks down, and the electric transmission system and the engine transmission system can be stopped working as early as possible.
In one embodiment, as shown in fig. 6, the short-circuit protection device further includes a first short-circuit protection unit 61, a second short-circuit protection unit 63, a third short-circuit protection unit 65, and a fourth short-circuit protection unit 67;
the first short-circuit protection unit 61 is connected between the normally-open switch 233 and the low-voltage power supply 15;
the second short-circuit protection unit 63 is connected between the first normally-closed switch 231 and the low-voltage power supply 15;
the third short-circuit protection unit 65 is connected between the second normally-closed switch 235 and the low-voltage power supply 15;
the fourth short-circuit protection unit 67 is connected between the third normally-closed switch 237 and the low-voltage power supply 15.
The low-voltage power supply is used for supplying power to the whole vehicle controller, the electronic control unit, the power supply integrated system, the driving motor system, the air conditioner high-voltage system, the delay relay and the like through branching, so that the power supply failure of the whole vehicle caused by the short circuit of one component is avoided. Furthermore, in order to avoid the damage to the low-voltage power supply when the short-circuit fault occurs to the vehicle control unit, the electronic control unit, the power integrated system, the driving motor system, the air-conditioning high-voltage system and the time delay relay, a short-circuit protection unit is connected between the low-voltage power supply and the vehicle control unit, the electronic control unit, the power integrated system, the driving motor system, the air-conditioning high-voltage system and the time delay relay respectively.
According to the emergency power-off system of the vehicle, the short-circuit protection unit is additionally arranged between the low-voltage power supply and the connection of the vehicle control unit, the electronic control unit, the power supply integrated system, the driving motor system, the air conditioner high-voltage system and the delay relay, so that the power supply safety of the low-voltage power supply is guaranteed.
In one embodiment, a vehicle is provided that includes a vehicle emergency electrical discharge system as described in the various embodiments of the vehicle emergency electrical discharge system;
and an electronic control unit of the vehicle emergency power-off system is connected with a high-voltage relay on the vehicle.
This application vehicle, installation vehicle promptly under the electric system after, can provide a quick effectual mode of cutting off the power supply for the vehicle when breaking down to the vehicle is safer.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An emergency power-off system of a vehicle is characterized by comprising an electronic control unit, a time delay relay and a low-voltage power supply for supplying power to the electronic control unit and the time delay relay;
the time delay relay is connected between the electronic control unit and the low-voltage power supply;
when the vehicle is powered off emergently, the low-voltage power supply interrupts the power supply to the time delay relay; the time delay relay after power failure delays and cuts off the power supply of the low-voltage power supply to the electronic control unit; and the electronic control unit cuts off a high-voltage relay on the vehicle after power failure.
2. The vehicle emergency electrical discharge system of claim 1, further comprising an on-off control module;
and the low-voltage power supply is connected with the coil of the time delay relay through the on-off control module.
3. A vehicle emergency electrical discharge system according to claim 2, comprising a vehicle control unit; the on-off control module is a switch module;
the switch module comprises a first normally closed switch and a normally open switch;
the low-voltage power supply is connected with a coil of the time delay relay through the first normally closed switch; and the vehicle control unit is connected with the low-voltage power supply through the normally-open switch.
4. The vehicle emergency discharging system of claim 3, further comprising a power supply integration system, a driving motor system and an air conditioning high voltage system; the switch module further comprises a second normally closed switch;
the power supply integration system, the driving motor system and the air conditioner high-voltage system are respectively connected with the low-voltage power supply through the second normally-closed switch.
5. The vehicle emergency discharging system of claim 4, further comprising an electromechanical coupling controller; the switch module further comprises a third normally closed switch;
the electromechanical coupling controller is connected with the low-voltage power supply through the third normally closed switch.
6. The vehicle emergency discharging system of claim 5, further comprising an alarm module;
the alarm module is connected with the low-voltage power supply through the normally open switch.
7. The vehicle emergency discharging system of claim 6, further comprising a first short-circuit protection unit, a second short-circuit protection unit, a third short-circuit protection unit, and a fourth short-circuit protection unit;
the first short-circuit protection unit is connected between the normally open switch and the low-voltage power supply;
the second short-circuit protection unit is connected between the first normally-closed switch and the low-voltage power supply;
the third short-circuit protection unit is connected between the second normally-closed switch and the low-voltage power supply;
the fourth short-circuit protection unit is connected between the third normally-closed switch and the low-voltage power supply.
8. A vehicle emergency power down system according to any one of claims 3 to 7, further comprising an emergency power down button;
the emergency power-off key is respectively connected with the first normally closed switch and the normally open switch.
9. The vehicle emergency discharging system of claim 1,
the electronic control unit is a power management system.
10. A vehicle comprising a vehicle emergency electrical discharge system according to any one of claims 1 to 9;
and the electronic control unit of the vehicle emergency power-off system is connected with a high-voltage relay on the vehicle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810972473.6A CN110857032A (en) | 2018-08-24 | 2018-08-24 | Vehicle emergency power-off system and vehicle |
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| CN201810972473.6A CN110857032A (en) | 2018-08-24 | 2018-08-24 | Vehicle emergency power-off system and vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113978253A (en) * | 2021-09-24 | 2022-01-28 | 合众新能源汽车有限公司 | Insert and mix formula hybrid vehicle type scram device |
| CN114655016A (en) * | 2021-03-23 | 2022-06-24 | 北京新能源汽车股份有限公司 | Wake-up circuit, vehicle control unit, power-on and power-off control method and device |
| CN115139800A (en) * | 2022-07-21 | 2022-10-04 | 北京新能源汽车股份有限公司 | Electric automobile high-voltage control method and device and electric automobile |
| CN115384425A (en) * | 2021-05-24 | 2022-11-25 | 长城汽车股份有限公司 | Emergency power-off control method and device for one-key starting switch and automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112564474A (en) * | 2020-12-15 | 2021-03-26 | 武汉力行远方电源科技有限公司 | Vehicle-mounted auxiliary power supply dormancy and delayed power-off circuit and system |
| CN112564474B (en) * | 2020-12-15 | 2022-04-29 | 武汉葆源新能科技有限公司 | Vehicle-mounted auxiliary power supply dormancy and delayed power-off circuit and system |
| CN114655016A (en) * | 2021-03-23 | 2022-06-24 | 北京新能源汽车股份有限公司 | Wake-up circuit, vehicle control unit, power-on and power-off control method and device |
| CN114655016B (en) * | 2021-03-23 | 2024-01-30 | 北京新能源汽车股份有限公司 | Wake-up circuit, whole vehicle controller, power-on and power-off control method and device |
| CN115384425A (en) * | 2021-05-24 | 2022-11-25 | 长城汽车股份有限公司 | Emergency power-off control method and device for one-key starting switch and automobile |
| CN115384425B (en) * | 2021-05-24 | 2024-07-26 | 长城汽车股份有限公司 | Emergency power-off control method and device for one-key starting switch and automobile |
| CN113978253A (en) * | 2021-09-24 | 2022-01-28 | 合众新能源汽车有限公司 | Insert and mix formula hybrid vehicle type scram device |
| CN115139800A (en) * | 2022-07-21 | 2022-10-04 | 北京新能源汽车股份有限公司 | Electric automobile high-voltage control method and device and electric automobile |
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