CN217532573U - High-voltage power-off system for vehicle and vehicle - Google Patents
High-voltage power-off system for vehicle and vehicle Download PDFInfo
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- CN217532573U CN217532573U CN202221642356.1U CN202221642356U CN217532573U CN 217532573 U CN217532573 U CN 217532573U CN 202221642356 U CN202221642356 U CN 202221642356U CN 217532573 U CN217532573 U CN 217532573U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model discloses can provide a high-voltage power-off system and car for vehicle, this high-voltage power-off system includes: the battery pack is internally provided with a battery management device; the peripheral load is electrically connected with the battery pack; the connecting wire is provided with a maintenance switch; and the storage battery is electrically connected with the battery management device through a connecting wire. The utility model discloses a security is high, can ensure that the maintenance personal maintenance in-process can not have high-voltage electrical risk, when can guaranteeing rescue personnel safety, can rescue the driver and passenger in the accident car fast.
Description
Technical Field
The utility model relates to an automotive filed, concretely relates to high-voltage power-off system and car for vehicle.
Background
With the rapid development of new energy vehicles, the sales of electric vehicles in the global area is continuously increasing. The power source of the new energy automobile is a high-voltage battery pack, and the output direct-current voltage is as high as 800V and is far higher than the voltage which can be born by people. The high voltage battery pack can cause injury to the driver, the maintenance personnel and the rescue personnel in case of improper operation or improper handling. For example, a high-voltage maintenance switch is arranged in the high-voltage battery pack, and maintenance and rescue personnel can realize the cutoff of the high-voltage electric output by pulling out the high-voltage maintenance switch for manual operation. The high-voltage maintenance switch is usually integrated on a bus loop in the high-voltage battery pack, and considering that the sealing performance between a passenger compartment and the outside of a vehicle and the arrangement requirement of the whole vehicle are higher, the damage to passengers in the vehicle can be possibly expanded when the high-voltage battery pack is ignited and discharged. For wading and collision accident scenarios, additional risks may be brought about by contacting the high voltage service switch.
For example, a low-voltage maintenance switch is arranged on a low-voltage line of the whole vehicle, the low-voltage maintenance switch is manually operated to realize low-voltage signal triggering, and a high-voltage system is controlled through the low-voltage signal to cut off high-voltage output. The low-voltage maintenance switch controls the output of high-voltage electricity by a low-voltage signal, so that the high-voltage electricity cannot be cut off in time when the software has bug (defect). When high voltage electricity does not need to be cut off, the relay inside the high-voltage battery pack is adhered due to the output of a cut-off command, and when the whole vehicle normally runs, the high voltage electricity can be cut off suddenly to cause rear-end collision risks and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-voltage power-off system and car for vehicle for solve current high-voltage battery package and under the improper condition of operation or processing, will cause the problem of injury to driver and crew, maintenance and rescue personnel, and can propose following technical scheme.
The utility model discloses can provide a high-voltage power failure system for vehicle, include:
the battery pack is internally provided with a battery management device;
the peripheral load is electrically connected with the battery pack;
the connecting wire is provided with a maintenance switch;
and the storage battery is electrically connected with the battery management device through the connecting wire.
In an embodiment of the present invention, the battery pack includes:
a power source;
the pyrotechnic switch is arranged in the power supply; and
and the safety air bag controller is electrically connected with the pyrotechnic switch.
In an embodiment of the present invention, the battery management apparatus includes:
the positive relay is electrically connected with the positive electrode of the power supply; and
and the negative relay is electrically connected with the negative electrode of the power supply.
In an embodiment of the present invention, the battery management apparatus further includes:
a pre-charging relay; and
the pre-charging resistor is electrically connected with the pre-charging relay;
and the pre-charging relay is connected with the pre-charging resistor in series and then connected with the positive relay in parallel.
In an embodiment of the present invention, the peripheral load includes:
the load capacitor is electrically connected to the output end of the battery pack;
a passive discharge resistor connected in parallel with the load capacitor; and
and the motor is connected with the load capacitor in parallel.
In an embodiment of the present invention, the peripheral load further includes:
an active discharge resistor; and
the load relay is electrically connected with the active discharge resistor;
and the active discharge resistor is connected with the load relay in series and then connected with the load capacitor in parallel.
In an embodiment of the present invention, the connecting wire is provided with at least two trimming points.
The utility model discloses still can propose an automobile, include:
a vehicle main body;
a high voltage power-off system installed in the vehicle main body, the high voltage power-off system including:
the battery pack is internally provided with a battery management device;
the peripheral load is electrically connected with the battery pack;
the connecting wire is provided with a maintenance switch;
and the storage battery is electrically connected with the battery management device through the connecting lead.
In an embodiment of the present invention, the vehicle body includes:
a cabin located at a front portion of the vehicle body; and
a trunk located at a rear portion of the vehicle body;
one side of the connecting wire, which is positioned on the cabin, is provided with a first trimming point, and one side of the connecting wire, which is positioned on the trunk, is provided with a second trimming point.
In an embodiment of the present invention, the first trimming point and the second trimming point are respectively located on both sides of the vehicle main body.
The utility model provides a high-tension electricity system and car for vehicle, the utility model discloses a security is high, can ensure that there is not high-voltage electrical risk in the maintenance personal maintenance process. The safety of rescue workers can be guaranteed, drivers and passengers in the accident car can be quickly rescued, and impact and failure of a high-voltage system can not be caused.
Drawings
Fig. 1 is a schematic structural diagram of a high-voltage power-off system for a vehicle according to the present invention.
Fig. 2 is a schematic structural diagram of an automobile according to the present invention.
In the figure: 10. a battery pack; 11. a battery management device;
20. a peripheral load;
30. connecting a lead; 31. a low voltage maintenance switch; 32. a first trimming point; 33. a second trimming point;
40. a storage battery;
50. a vehicle main body; 51. a nacelle; 52. a luggage case.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
It should be noted that the drawings provided in the present embodiment are only for schematically illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, amount and proportion of each component may be changed arbitrarily and the layout of the components may be more complicated.
Referring to fig. 1-2, in some embodiments, the present invention provides a high voltage power-off system for a vehicle and a vehicle, which can be applied to the high voltage power-off field, the transportation field, and the like, for example, the present invention can be specifically applied to the high voltage power-off system of the vehicle, and the high voltage power-off system can be applied to the vehicle. The present invention is described in detail below with reference to specific examples.
Referring to fig. 1, in some embodiments, the present invention provides a high voltage power-off system for a vehicle, which may include a battery pack 10, a peripheral load 20, a connection wire 30, and a storage battery 40. The BATTERY pack 10 may include a BATTERY management device 11 (BMS, BATTERY MANAGEMENT SYSTEM, BATTERY management device). The battery management device 11 can intelligently manage and maintain the battery pack 10, prevent the battery pack 10 from being overcharged and overdischarged, prolong the service life of the battery pack 10, and monitor the state of the battery pack 10. The battery pack 10 is electrically connected to a peripheral load 20, and the peripheral load 20 is electrically connected to an output terminal of the battery pack 10. The peripheral load 20 may be used to convert electrical energy into other forms of energy, such as may be used to convert electrical energy into heat, light, mechanical energy, and the like. At least one low voltage service switch 31 is provided on the connecting lead 30. The low voltage service switch 31 functions to turn on or off the connection wire 30. The battery 40 and the battery management device 11 are electrically connected by a connection wire 30. The battery 40 is capable of regenerating the internal active material by charging after discharge-storing electrical energy as chemical energy, and converting chemical energy to electrical energy again when discharge is required.
Referring to fig. 1, in some embodiments, when the new energy vehicle is normally maintained, a low voltage maintenance switch 31 may be added on the basis of the normal arrangement of the battery pack 10 circuit structure of the entire vehicle. At this time, even if the maintenance worker performs power-on operations such as opening and closing the door again or pressing the start button by mistake, the vehicle cannot have high voltage because the battery management system 11 detects that the switch is turned off, and the false start can be effectively prevented.
Referring to fig. 1, in some embodiments, the battery pack 10 includes a power source E1, a pyrotechnic switch F1, and an airbag controller ECU (Electronic Control Unit). The pyrotechnic switch F1 is disposed inside the power supply E1, and the pyrotechnic switch F1 can cut off the output of the power supply E1, that is, the pyrotechnic switch F1 can cut off the output of the battery pack 10. The pyrotechnic switch F1 is electrically connected with the safety airbag controller ECU, and the safety airbag controller ECU can be used for controlling the on and off of the pyrotechnic switch F1.
Referring to fig. 1, in some embodiments, the battery management system 11 may include a positive relay K1, a pre-charge relay K2, a pre-charge resistor R1, and a negative relay K3, and the battery management system 11 controls the positive relay K1, the pre-charge relay K2, and the negative relay K3. One end of the positive relay K1 is electrically connected with the positive electrode of the power supply E1. One end of the pre-charge relay K2 is electrically connected with one end of the pre-charge resistor R1, the other end of the pre-charge relay K2 is electrically connected with one end of the positive electrode relay K1, and the other end of the pre-charge resistor R1 is electrically connected with the other end of the positive electrode relay K1. One end of the negative relay K3 is electrically connected with the negative electrode of the power supply E1. The other end of the positive relay K1 and the other end of the negative relay K3 are used as the output end of the battery pack 10.
Referring to fig. 1, in some embodiments, the peripheral load 20 may include a load capacitor C1, a passive discharge resistor R2, an active discharge resistor R3, a load relay K4, and a motor M. The load capacitor C1 is connected in parallel to the output end of the battery pack 10. The passive discharge resistor R2 is connected in parallel with the load capacitor C1. One end of the load relay K4 is electrically connected with one end of the active discharge resistor R3, the other end of the load relay K4 is electrically connected with one end of the load capacitor C1, and the other end of the active discharge resistor R3 is electrically connected with the other end of the load capacitor C1. The motor M is connected in parallel with the load capacitor C1.
Referring to fig. 1, in some embodiments, the connecting wire 30 may have at least two trimming points, and the trimming points may be used for trimming by using scissors or a cutting tool to cut the connecting wire 30 of low voltage. For example, two trimming points, namely a first trimming point 32 and a second trimming point 33, can be disposed on the connecting wire 30.
Referring to fig. 1 and 2, in some embodiments, the present invention further provides an automobile, which includes a vehicle body 50 and the above-mentioned high voltage power-off system, and the high voltage power-off system is mounted on the vehicle body 50. The vehicle body 50 may include a cabin 51 and a trunk 52, and the cabin 51 may be located at a front position of the vehicle body 50 and the trunk 52 may be located at a rear position of the vehicle body 50. The first trimming point 32 may be provided at a position on one side of the nacelle 51, for example, the first trimming point 32 may be provided at a position on the left side of the nacelle 51. The second trimming point 33 may be disposed at a position on one side of the luggage case 52, for example, the second trimming point 33 may be disposed at a position on the right side of the luggage case 52. The arrangement positions of the first trimming points 32 and the second trimming points 33 can avoid a scene that the front cabin 51 cannot be opened due to front collision or a scene that the rear trunk 52 cannot be opened due to rear-end collision, and a redundant consideration is added.
Referring to fig. 1 and 2, in some embodiments, in a normal driving scene and a charging process of a new energy vehicle, a low-voltage battery 40 is directly connected to a first trimming point 31 and then connected to a second trimming point 32, and then enters a battery management device 11, so that intermediate controller links are reduced. And one electric wire is added to be simultaneously connected with two electric wires, so that the influence caused by power supply fluctuation of the supply relay is greatly reduced, and one more electric wire is considered redundantly.
Referring to fig. 1 and 2, in some embodiments, when a new energy vehicle collides, an airbag controller ECU controls an ignition and ignition type switch F1, so as to cut off an output function of a high-voltage power supply E. However, in some collision conditions, the signal of the airbag controller ECU cannot be triggered in time, so that the high-voltage power supply E cannot be cut off in time, and the situation that the vehicle is disconnected and not opened due to the fact that the vehicle wants to be cut off is caused. When the new energy automobile wades, the collision signal is triggered because the automobile is not detected, namely the safety airbag controller ECU does not transmit an induction signal to the whole automobile to cut off the high-voltage power supply E, part of the low-voltage controllers possibly cause control failure after water enters, and the electric vehicle cannot normally power down. Aiming at the scene that the whole vehicle is expected to be powered off but the power cannot be powered off actually, the method brings great potential safety hazards to drivers, passengers, maintenance and rescue workers. Through the improvement of the utility model, the connecting wire 30 can be cut off by using a rescue tool (for example, scissors, a cutting machine and the like) at the position of the first trimming point 32 or the second trimming point 33.
To sum up, the utility model provides a high-voltage power-off system and car for vehicle, the utility model has the advantages of simple structure, change for a short time, with low costs, easy operation. And the utility model discloses a security is high, and control circuit is short, response time is short, the potential safety hazard is little, the outage is protected the barrier height. Can ensure that no high voltage risk exists in the maintenance process of maintenance personnel. The safety of the rescuers can be ensured, and simultaneously the drivers and passengers in the accident car can be rescued quickly. And impact and failure of the high-pressure system can not be caused. The utility model discloses a good reliability has stopped the unexpected trouble that software bug (trouble) brought, and stability is strong.
The above description is only a preferred embodiment of the present application and the description of the applied technical principle, and it should be understood by those skilled in the art that the scope of the present invention is not limited to the technical solution of the specific combination of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or their equivalent features, for example, the technical solutions formed by mutually replacing the above technical features (but not limited to) having similar functions disclosed in the present application, without departing from the inventive concept.
Besides the technical features described in the specification, other technical features are known to those skilled in the art, and further description of the other technical features is omitted here in order to highlight the innovative features of the present invention.
Claims (10)
1. A high voltage power down system for a vehicle, comprising:
the battery pack is internally provided with a battery management device;
the peripheral load is electrically connected with the battery pack;
the connecting wire is provided with a maintenance switch; and
and the storage battery is electrically connected with the battery management device through the connecting lead.
2. The high voltage power cutoff system for a vehicle according to claim 1, wherein the battery pack comprises:
a power source;
the pyrotechnic switch is arranged in the power supply; and
and the safety air bag controller is electrically connected with the pyrotechnic switch.
3. The high voltage power cutoff system for a vehicle according to claim 2, wherein the battery management device comprises:
the positive relay is electrically connected with the positive electrode of the power supply; and
and the negative relay is electrically connected with the negative electrode of the power supply.
4. The high voltage power outage system for vehicles according to claim 3, characterized in that the battery management device further comprises:
a pre-charging relay; and
the pre-charging resistor is electrically connected with the pre-charging relay;
and the pre-charging relay is connected with the pre-charging resistor in series and then connected with the positive relay in parallel.
5. The high voltage power cutoff system for a vehicle according to claim 1, wherein the peripheral load comprises:
the load capacitor is electrically connected to the output end of the battery pack;
a passive discharge resistor connected in parallel with the load capacitor; and
and the motor is connected with the load capacitor in parallel.
6. The high voltage power outage system for vehicles according to claim 5, characterized in that the peripheral load further comprises:
an active discharge resistor; and
the load relay is electrically connected with the active discharge resistor;
and the active discharge resistor is connected with the load relay in series and then connected with the load capacitor in parallel.
7. The system according to claim 1, wherein at least two trimming points are provided on the connecting wire.
8. An automobile, comprising:
a vehicle main body;
a high voltage power-off system installed in the vehicle main body, the high voltage power-off system including:
the battery pack is internally provided with a battery management device;
the peripheral load is electrically connected with the battery pack;
the connecting wire is provided with a maintenance switch;
and the storage battery is electrically connected with the battery management device through the connecting lead.
9. An automobile according to claim 8, wherein the vehicle body comprises:
a cabin located at a front portion of the vehicle body; and
a trunk located at a rear portion of the vehicle body;
one side of the connecting wire, which is positioned on the cabin, is provided with a first trimming point, and one side of the connecting wire, which is positioned on the trunk, is provided with a second trimming point.
10. An automobile according to claim 9, wherein the first and second cut points are located on either side of the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221642356.1U CN217532573U (en) | 2022-06-28 | 2022-06-28 | High-voltage power-off system for vehicle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221642356.1U CN217532573U (en) | 2022-06-28 | 2022-06-28 | High-voltage power-off system for vehicle and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217532573U true CN217532573U (en) | 2022-10-04 |
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ID=83422084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221642356.1U Active CN217532573U (en) | 2022-06-28 | 2022-06-28 | High-voltage power-off system for vehicle and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217532573U (en) |
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2022
- 2022-06-28 CN CN202221642356.1U patent/CN217532573U/en active Active
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