CN115476693A - Vehicle and high-voltage interlocking system thereof - Google Patents
Vehicle and high-voltage interlocking system thereof Download PDFInfo
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- CN115476693A CN115476693A CN202211182355.8A CN202211182355A CN115476693A CN 115476693 A CN115476693 A CN 115476693A CN 202211182355 A CN202211182355 A CN 202211182355A CN 115476693 A CN115476693 A CN 115476693A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 47
- 238000012423 maintenance Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 abstract description 5
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- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
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- 238000003745 diagnosis Methods 0.000 description 1
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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
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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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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- 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
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a vehicle and a high-voltage interlocking system thereof, which comprise a vehicle control unit, a plurality of high-voltage components and a plurality of voltage monitoring chips, wherein the voltage monitoring chips are arranged in one-to-one correspondence with the high-voltage components; the high-voltage component comprises a high-voltage connector and a low-voltage connector, the high-voltage connector is electrically connected with an interlocking voltage output end of the whole vehicle controller through the low-voltage connector to form an interlocking loop in each high-voltage component, and the voltage monitoring chips are correspondingly connected in series in the interlocking loop of each high-voltage component one by one; the voltage monitoring chip is used for acquiring a voltage signal of the interlocking loop in real time, determining the interlocking state of the high-voltage components according to the voltage signal, and when a certain high-voltage component is determined to have a fault, the fault is not required to be checked one by one, so that the interlocking fault maintenance efficiency of each high-voltage component is greatly improved, the voltage monitoring chip can be configured to adopt a relatively accurate fault detection method, the situation of misjudgment can be effectively avoided, and the method is simple in principle, reliable and feasible.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle and a high-voltage interlocking system thereof.
Background
In recent years, with the increasing international environmental and energy crisis, traditional energy alternatives are sought in all countries of the world. With the increase of automobile sales, new energy automobiles are developing to meet the environmental protection and energy crisis. Because the performance of the power battery is obviously attenuated in a low-temperature environment and the endurance mileage is seriously influenced, the holding capacity of pure electric vehicles in the north of China is low, and Hybrid Electric Vehicles (HEVs) are favored by consumers.
Although a Hybrid Electric Vehicle (HEV) does not have a plug-in charging function, the HEV is still equipped with a power battery of 350V or more, and high-voltage safety is still a design focus. In the ISO international standard, it is specified that vehicle high-voltage components should have a high-voltage interlock.
For the implementation of high-voltage interlock, it is now common to provide interlock pins at the high-voltage and low-voltage connectors of the high-voltage components, and connect the high-voltage components together in series through the low-voltage loop, so as to form an interlock loop, and to apply a certain voltage across the loop, so that the vehicle can monitor the interlock voltage in real time. When the high-voltage component plug is abnormally connected or damaged, the voltage of the interlocking loop changes, the vehicle identifies the fault state, and the high-voltage interlocking fault is reported. Although the scheme can play a role in monitoring the interlocking state in real time, for maintenance and troubleshooting, a large number of parts and joints of the vehicle need to be disassembled to measure the state of a loop, and Hybrid Electric Vehicles (HEVs) usually arrange high-voltage parts such as power batteries and the like below a rear seat and at positions where a rear spare wheel basin and the like are difficult to operate, so that the troubleshooting work is very complicated and time-consuming if the vehicle reports the high-voltage interlocking fault.
Disclosure of Invention
The invention provides a vehicle and a high-voltage interlocking system thereof, which are used for improving the overhauling efficiency of high-voltage interlocking faults of side cross beams.
According to an aspect of the present invention, there is provided a high-voltage interlock system of a vehicle, including: the system comprises a vehicle control unit, a plurality of high-voltage components and a plurality of voltage monitoring chips, wherein the voltage monitoring chips are arranged in one-to-one correspondence with the high-voltage components;
the high voltage component includes a high voltage connector and a low voltage connector,
in each high-voltage component, the high-voltage connector is electrically connected with an interlocking voltage output end of the vehicle control unit through the low-voltage connector to form an interlocking loop, and the voltage monitoring chips are correspondingly connected in series in the interlocking loop of each high-voltage component one by one;
the voltage monitoring chip is used for acquiring a voltage signal of the interlocking loop in real time and determining the interlocking state of the high-voltage component according to the voltage signal.
Optionally, the high-voltage interlock system of the vehicle further includes: an interlock controller;
the interlocking controller is in communication connection with each voltage monitoring chip;
each voltage monitoring chip is further used for sending fault information of the high-voltage component to the interlocking controller after the high-voltage component is determined to be in fault;
the interlock controller is used for latching a fault code according to the fault information.
Optionally, the interlock controller is in communication connection with the vehicle control unit;
the interlocking controller is used for sending the fault information to the vehicle control unit after receiving the fault information of the high-voltage component;
and the vehicle control unit is used for controlling a high-voltage power supply in the vehicle to stop outputting power after receiving the fault information.
Optionally, the high-voltage interlock system of the vehicle further includes: further comprising: a T-box;
the T-box is in communication connection with the interlock controller;
the interlocking controller is further used for sending the fault information to the T-box after receiving the fault information of the high-voltage component;
and the T-box is used for sending the received fault information to a cloud terminal.
Optionally, the high-voltage interlock system of the vehicle further includes: an alarm device;
the interlocking controller is also in communication connection with an alarm device; and the interlocking controller is also used for controlling the alarm device to give an alarm after receiving the fault information of the high-voltage component.
Optionally, the high-voltage interlock system of the vehicle further includes: a maintenance switch;
the interlocking voltage output end of the whole vehicle controller comprises a first voltage output end and a second voltage output end;
one end of the maintenance switch is electrically connected with the first voltage output end of the vehicle controller, and the other end of the maintenance switch is electrically connected with the second voltage output end of the vehicle controller and each low-voltage connector.
Optionally, the high-voltage interlock system of the vehicle further includes: an inertial switch;
the interlocking voltage output end of the whole vehicle controller comprises a first voltage output end and a second voltage output end;
one end of the inertia switch is electrically connected with the second voltage output end of the vehicle controller, and the other end of the inertia switch is electrically connected with the first voltage output end of the vehicle controller and each low-voltage connector.
Optionally, the high-voltage interlock system of the vehicle further includes: an emergency switch;
the interlocking voltage output end of the whole vehicle controller comprises a first voltage output end and a second voltage output end;
the emergency switch is electrically connected between a first voltage output end and a second voltage output end of the vehicle control unit.
Optionally, the high-voltage interlock system of the vehicle further includes: a first resistor and a second resistor;
the interlocking voltage output end of the whole vehicle controller comprises a first voltage output end and a second voltage output end;
the first end of the first resistor is electrically connected with a first voltage output end of the vehicle control unit, the second end of the first resistor is electrically connected with the first end of the second resistor and each low-voltage connector, and the second end of the second resistor is electrically connected with a second voltage output end of the vehicle control unit.
According to another aspect of the invention, a vehicle is provided, comprising the high-voltage interlock system of the vehicle described above.
According to the high-voltage interlocking system of the vehicle, the voltage monitoring chips are respectively arranged for each high-voltage component, the vehicle controller provides interlocking voltage for each high-voltage component, and the voltage monitoring chips are arranged in an interlocking loop formed by the high-voltage connector, the low-voltage connector of each high-voltage component and the interlocking voltage output end of the vehicle controller, so that the working state of each high-voltage component can be detected.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a high-voltage interlock system of a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another vehicle high-voltage interlock system provided by an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a high-voltage interlock system of another vehicle according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a high-voltage interlock system of another vehicle according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a high-voltage interlock system of a vehicle according to an embodiment of the present invention, and as shown in fig. 1, the high-voltage interlock system of the vehicle includes: the system comprises a vehicle control unit 10, a plurality of high-voltage components 20 and a plurality of voltage monitoring chips 30 which are arranged corresponding to the high-voltage components 20 one to one; the high-voltage component 20 includes a high-voltage connector 20a and a low-voltage connector 20b, in each high-voltage component 20, the high-voltage connector 20a is electrically connected with the interlocking voltage output terminals (the first voltage output terminal VOUT1 and the second voltage output terminal VOUT 2) of the vehicle controller 10 through the low-voltage connector 20b to form an interlocking loop, and the voltage monitoring terminals of the voltage monitoring chips 30 are electrically connected to the interlocking loops of the high-voltage components 20 in a one-to-one correspondence manner; the voltage monitoring chip 30 is used for acquiring a voltage signal of the interlock loop in real time and determining the interlock state of the high-voltage component 20 according to the voltage signal.
Specifically, the interlock voltage output terminal of the hybrid vehicle controller 10 may include a first voltage output terminal VOUT1 and a second voltage output terminal VOUT2, where the voltage output by the first voltage output terminal VOUT may be 5V, and the voltage output by the second voltage output terminal VOUT2 may be 0V. A plurality of high-voltage components 20, such as a power battery 21, an electric drive assembly 22, a DC-DC converter 23, an electric compressor 24 and the like, may be included in the vehicle, each high-voltage component 20 includes a high-voltage connector 20a and a low-voltage connector 20b, wherein the high-voltage connector 20a is provided with 2 low-voltage interlock pins (a first low-voltage interlock pin a and a second low-voltage interlock pin b), the low-voltage connector 20b is provided with 2 low-voltage interlock pins (a third low-voltage interlock pin c and a fourth low-voltage interlock pin d), the first low-voltage interlock pin a is electrically connected with the second low-voltage interlock pin b, the third voltage interlock pin c and a first voltage monitoring terminal V1 of the voltage monitoring chip 30, respectively, and the third low-voltage interlock pin c is electrically connected with a first voltage output terminal VOUT1 of the vehicle controller 10; the second low-voltage interlocking pin b is electrically connected with the fourth low-voltage interlocking pin d and the first voltage monitoring end V2 of the voltage monitoring chip 30, and the fourth low-voltage interlocking pin d is electrically connected with the second voltage output end VOUT1 of the vehicle controller 10; in this way, the high-voltage connector 20a, the low-voltage connector 20b of each high-voltage component 20 and the interlock voltage output end of the vehicle controller 10 can form an interlock loop, when the high-voltage connector 20a of each high-voltage component 20 is reliably connected without an interlock fault (i.e., the low-voltage interlock pins of the high-voltage connector 20a are reliably connected), the voltage signal in the interlock loop of each high-voltage component 20 should be kept at about 5V, the voltage monitoring chip 30 can obtain the voltage signal of the located interlock loop in real time, and when it is determined that the voltage signal is abnormal, it can be determined that the interlock fault exists in the high-voltage component 20, for example, if an interlock fault exists in a certain high-voltage component 20, two low-voltage interlock pins of the high-voltage connector 20a may not be reliably connected, at this time, the interlock loop is open, the voltage is 0, and when the voltage is detected to be 0, it is determined that the interlock fault exists in the high-voltage component 20. The first voltage output terminal VOUT1 and the second voltage output terminal VOUT2 of the vehicle controller 10 may be electrically connected through at least one voltage dividing resistor R0 to serve as an interlocking main circuit, and the voltage dividing resistor R0 may prevent the first voltage output terminal VOUT1 and the second voltage output terminal VOUT2 from being shorted; the voltage monitoring chip can be any chip with a voltage detection function and a communication function.
For example, due to uncontrollable factors or other interference factors that may exist during the running of the vehicle, the voltage signal of the interlock loop of each high-voltage component 20 may float within a range, and therefore, when the voltage signal acquired by the voltage monitoring chip 30 is within a preset voltage range, it may be determined that the voltage signal is normal, and then it may be determined that the corresponding high-voltage component 20 is in a normal operating state, for example, if the interlock voltage provided by the vehicle controller 20 is 5V, the preset voltage range may be set to be 5V ± 2.5V, and when the acquired voltage signal is not within the preset voltage range, it may be determined that the voltage signal is abnormal; in order to avoid erroneous determination of the operating state of the high-voltage component, the duration of the voltage signal remaining abnormal may be recorded, and if the duration exceeds a first preset time (for example, 20 s), it is determined that the high-voltage component 20 is out of order. Or, when it is determined that the voltage signal is abnormal, the voltage signal of the interlock loop may be continuously acquired, and it may be continuously determined whether the voltage signal is continuously kept abnormal or not, and the time for which the voltage signal is kept in an abnormal state is recorded, if the duration of the voltage signal abnormality exceeds a first preset time (for example, 20 s), it is determined as an effective voltage abnormality record, the voltage monitoring chip 30 records the abnormal voltage signal and continuously acquires the voltage signal, and if the voltage signal abnormality record is continuously triggered and the number of times exceeds a preset number of times (for example, 3 times), it may be determined that the high-voltage component 20 is in a fault, so that the extremely short voltage fluctuation of the interlock loop due to the interference may be effectively filtered, and the phenomenon of false alarm of the interlock fault may be effectively avoided.
According to the high-voltage interlocking system of the vehicle, the voltage monitoring chips are respectively arranged for each high-voltage component, the vehicle controller provides interlocking voltage for each high-voltage component, and the voltage monitoring chips are arranged in an interlocking loop formed by the high-voltage connector, the low-voltage connector of each high-voltage component and the interlocking voltage output end of the vehicle controller, so that the working state of each high-voltage component can be detected.
Optionally, fig. 2 is a schematic diagram of another vehicle high-voltage interlock system according to an embodiment of the present invention, and as shown in fig. 2, the vehicle high-voltage interlock system further includes an interlock controller 40, and the interlock controller 40 is in communication connection with each voltage monitoring chip 30; each voltage monitoring chip 30 is also used to send fault information of the high-voltage component 20 to the interlock controller 40 after determining that the high-voltage component is faulty.
Specifically, an interlock controller 40 may be further disposed in the high-voltage interlock system, after each voltage monitoring chip 30 monitors that an interlock fault occurs in a corresponding high-voltage component, the voltage monitoring chip also outputs fault information of the high-voltage component 20 to the interlock controller 40, and after receiving the fault information, the interlock controller 40 latches a fault code related to the fault information, and records the interlock fault of the high-voltage component, so as to be used as fault data for subsequent maintenance.
For example, in other possible embodiments, the interlock controllers may be disposed in a one-to-one correspondence relationship with the voltage monitoring chips, such that each interlock controller is in communication connection with the corresponding voltage monitoring chip, for latching the fault code for the fault information of each high-voltage component, respectively, fig. 3 is a schematic structural diagram of a high-voltage interlock system of another vehicle according to an embodiment of the present invention, as shown in fig. 3, each interlock controller 40 is electrically connected to each voltage monitoring chip 30 in a one-to-one correspondence relationship, at this time, the controller of each high-voltage component may be multiplexed as the interlock controller 40, for example, a power battery controller (BMS) 41 may be disposed in communication connection with the voltage monitoring chip 30 in the power battery interlock loop, a driving Motor Controller (MCU) 42 is in communication connection with the voltage monitoring chip 30 in the electric drive assembly interlock loop, a DC-DC converter controller 43 is in communication connection with the voltage monitoring chip 30 in the DC-DC converter interlock loop, and an air conditioner controller (AC) 44 is in communication connection with the voltage monitoring chip 30 in the electric compressor interlock loop, so that the arrangement of the interlock controllers may be reduced, which is beneficial to reducing the cost.
Optionally, referring back to fig. 2, the interlock controller 40 is communicatively connected to the vehicle control unit 10; the interlock controller 40 is configured to send fault information to the vehicle control unit 10 after receiving the fault information of the high-voltage component 20; the vehicle control unit 10 is configured to control the high-voltage power supply in the vehicle to stop outputting power after receiving the failure information.
Specifically, after the interlock controller 40 receives the fault information of the high-voltage component, the fault information may be sent to the vehicle control unit 10, so that the vehicle control unit 10 powers off the high-voltage system of the vehicle, and safety accidents are avoided.
For example, referring to fig. 3, when the interlock controllers 40 are provided in a one-to-one correspondence with the voltage monitoring chips 30, the interlock controllers 40 may be provided to be respectively in communication with the vehicle controller 10, so as to respectively send fault information to the vehicle controller 10 for an interlock fault of each high-voltage component 20.
Optionally, with continued reference to FIG. 2, the high voltage interlock system of the vehicle further includes a T-box50
50 are communicatively connected to the interlock controller 40; the interlock controller 40 is also configured to send failure information to the T-box50 after receiving the failure information of the high-voltage component 20; the T-box50 is used for sending the received fault information to the cloud.
Specifically, the interlock controller 40 may be in communication connection with the T-box50 through the gateway, and after the interlock controller 40 receives the fault information of the high-voltage component, the fault information may be sent to the T-box50, so that the T-box50 may send the fault information to the cloud in time, and the fault information may be sorted and stored in the database, so that the maintenance staff may check the fault reason according to the fault information in the database. The fault information of the vehicle is uploaded to the cloud, and the fault data are classified, processed and stored, so that the vehicle fault information can be used as data support for intelligent diagnosis and research of vehicle faults.
Illustratively, with continued reference to fig. 3, when the controllers of the respective high-voltage components are multiplexed as the interlock controller 40, the power battery controller (BMS) 41, the driving Motor Controller (MCU) 42, and the DC-DC converter controller 43 may transmit the fault information to the gateway through the power CAN, the air conditioner controller (AC) 44 may transmit the fault information to the gateway through the comfort CAN, and the gateway may be communicatively connected to the T-box through the information CAN to enable transmission of the fault information.
Optionally, with continued reference to fig. 2, the high-voltage interlock system of the vehicle further includes an alarm device 60; interlock controller 40 is also in communication with alarm device 60; the interlock controller 40 is also used for controlling the alarm device 60 to give an alarm after receiving the fault information of the high voltage component 20.
Specifically, the interlock controller 40 outputs an alarm control signal to the alarm device 60 after receiving the fault information of any one or more of the high voltage components 20, so that the alarm device 60 gives an alarm in time, so that a user or a maintenance person can take measures in time according to the alarm signal. Wherein the alarm device 60 may comprise an indicator light and/or a buzzer or the like.
For example, with reference to fig. 3, when the interlock controllers 40 are disposed in a one-to-one correspondence with the voltage monitoring chips 30, the interlock controllers 40 may be disposed to be electrically connected to the alarm device 60, respectively, so as to control the alarm device 60 to alarm the vehicle control unit 10 about the interlock failure of the high-voltage components 20, respectively.
Optionally, fig. 4 is a schematic structural diagram of another high-voltage interlock system provided in an embodiment of the present invention, and as shown in fig. 4, the high-voltage interlock system of the vehicle further includes a maintenance switch K1; the interlocking voltage output ends of the vehicle controller 10 include a first voltage output end VOUT1 and a second voltage output end VOUT2; one end of the maintenance switch K1 is electrically connected to a first voltage output terminal VOUT1 of the vehicle controller 10, and the other end of the maintenance switch K1 is electrically connected to a second voltage output terminal VOUT2 of the vehicle controller 10 and each of the low-voltage connectors 20 b.
Specifically, a maintenance switch K1 may be further disposed on the parallel main circuit of each interlock circuit, one end of the maintenance switch K1 may be electrically connected to the first voltage output terminal VOUT1 of the vehicle controller 10, and the other end of the maintenance switch K1 is electrically connected to the third low-voltage interlock pin c of each low-voltage connector 20 and the second voltage output terminal VOUT2 of the vehicle controller 10. So, when maintaining the vehicle, can control maintenance switch K1 disconnection, then the interlocking return circuit outage of each high-voltage component 20, interlocking controller 40 sends interlocking fault information to vehicle control unit 10 this moment, and vehicle control unit 10 can control the high voltage power supply outage according to fault information to guarantee that maintenance personal operates under the safety condition, avoid maintenance personal to have the risk of high voltage electric shock when maintaining the vehicle.
Optionally, referring to fig. 4, the high voltage interlock system of the vehicle further includes an inertia switch K2; the interlocking voltage output ends of the vehicle controller 10 include a first voltage output end VOUT1 and a second voltage output end VOUT2; one end of the inertia switch K2 is electrically connected to the second voltage output terminal VOUT2 of the vehicle controller 10, and the other end of the inertia switch K2 is electrically connected to the first voltage output terminal VOUT1 of the vehicle controller 10 and each of the low-voltage connectors 20 b.
Specifically, an inertia switch K2 may be further disposed on the parallel main circuit of each interlock circuit, one end of the inertia switch K2 may be electrically connected to the second voltage output terminal VOUT2 of the vehicle controller 10, and the other end of the inertia switch K2 is electrically connected to the fourth low-voltage interlock pin d of each low-voltage connector 20 and the first voltage output terminal VOUT1 of the vehicle controller 10. When a vehicle collides, the inertia switch is automatically switched off, the interlocking loops of the high-voltage components 20 are powered off, the interlocking controller 40 sends interlocking fault information to the vehicle control unit 10, and the vehicle control unit 10 can control the high-voltage power supply to be powered off according to the fault information, so that the vehicle actively cuts off a high-voltage circuit, and risks such as short circuit and fire of high-voltage wire harnesses and components caused by vehicle collision are prevented.
Optionally, with continued reference to fig. 4, the high voltage interlock system of the vehicle further includes an emergency switch K3; the interlocking voltage output ends of the vehicle controller 10 include a first voltage output end VOUT1 and a second voltage output end VOUT2; the emergency switch K3 is electrically connected between the first voltage output terminal VOUT1 and the second voltage output terminal VOUT2 of the vehicle control unit 10.
Specifically, first voltage output terminal VOUT1 and second voltage output terminal VOUT2 of vehicle control unit 10 can also be connected through emergency switch K3 electricity, and when the vehicle interlocking trouble, vehicle control unit 10 control high voltage power supply outage back, under the circumstances such as professional's inspection circuit does not have the circumstances such as drop, damage, steerable emergency switch K3 is closed, makes each interlocking return circuit short circuit, and the interlocking function is invalid, can make the vehicle start travel.
Optionally, with continued reference to fig. 4, the high-voltage interlock system of the vehicle further includes a first resistor R1 and a second resistor R2, and the interlock voltage output terminal of the vehicle controller 10 includes a first voltage output terminal VOUT1 and a second voltage output terminal VOUT2; a first end of the first resistor R1 is electrically connected to a first voltage output terminal VOUT1 of the vehicle control unit 10, a second end of the first resistor R1 is electrically connected to a first end of the second resistor R2 and each low-voltage connector 20b, and a second end of the second resistor R2 is electrically connected to a second voltage output terminal VOUT2 of the vehicle control unit 10.
Specifically, a first resistor R1 and a second resistor R2 may be further disposed on the parallel main circuit of each interlock circuit for voltage division, and the first resistor R1 and the second resistor R2 are preferably disposed at positions close to the interlock voltage output end of the vehicle controller 10, but not disposed between the interlock circuits of each high-voltage component, so that the circuit voltages of the interlock circuits can be ensured to be consistent, and thus the detection standards of the voltage detection chip 20 can be set to be consistent, so that the design of the high-voltage interlock detection system is simpler.
Based on the same inventive concept, the embodiment of the present invention further provides a vehicle, where the vehicle includes the high-voltage interlock system of the vehicle provided in any embodiment of the present invention, and therefore the vehicle provided in the embodiment of the present invention includes technical features of the high-voltage interlock system of the vehicle provided in any embodiment of the present invention, and can achieve beneficial effects of the high-voltage interlock system of the vehicle provided in any embodiment of the present invention, and the same points can refer to the above description of the high-voltage interlock system of the vehicle provided in the embodiment of the present invention, and are not repeated herein.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-pressure interlock system for a vehicle, comprising: the system comprises a vehicle control unit, a plurality of high-voltage components and a plurality of voltage monitoring chips, wherein the voltage monitoring chips are arranged in one-to-one correspondence with the high-voltage components;
the high voltage component includes a high voltage connector and a low voltage connector,
in each high-voltage component, the high-voltage connector is electrically connected with an interlocking voltage output end of the vehicle control unit through the low-voltage connector to form an interlocking loop, and the voltage monitoring chips are correspondingly connected in series in the interlocking loop of each high-voltage component one by one;
the voltage monitoring chip is used for acquiring a voltage signal of the interlocking loop in real time and determining the interlocking state of the high-voltage component according to the voltage signal.
2. The vehicle high-voltage interlock system according to claim 1, further comprising: an interlock controller;
the interlocking controller is in communication connection with each voltage monitoring chip;
each voltage monitoring chip is also used for sending fault information of the high-voltage component to the interlocking controller after the high-voltage component is determined to be in fault;
the interlock controller is used for latching a fault code according to the fault information.
3. The vehicle high-voltage interlock system according to claim 2, wherein the interlock controller is communicatively coupled to the hybrid vehicle controller;
the interlocking controller is used for sending the fault information to the vehicle control unit after receiving the fault information of the high-voltage component;
and the vehicle control unit is used for controlling a high-voltage power supply in the vehicle to stop outputting power after receiving the fault information.
4. The vehicle high-voltage interlock system according to claim 2, further comprising: a T-box;
the T-box is in communication connection with the interlock controller;
the interlocking controller is further used for sending the fault information to the T-box after receiving the fault information of the high-voltage component;
and the T-box is used for sending the received fault information to a cloud terminal.
5. The vehicle high-voltage interlock system according to claim 2, further comprising: an alarm device;
the interlocking controller is also in communication connection with an alarm device; and the interlocking controller is also used for controlling the alarm device to give an alarm after receiving the fault information of the high-voltage component.
6. The vehicle high-voltage interlock system according to claim 1, further comprising: a maintenance switch;
the interlocking voltage output end of the whole vehicle controller comprises a first voltage output end and a second voltage output end;
one end of the maintenance switch is electrically connected with the first voltage output end of the vehicle control unit, and the other end of the maintenance switch is electrically connected with the second voltage output end of the vehicle control unit and each low-voltage connector.
7. The vehicle high-voltage interlock system according to claim 1, further comprising: an inertial switch;
the interlocking voltage output end of the whole vehicle controller comprises a first voltage output end and a second voltage output end;
one end of the inertia switch is electrically connected with the second voltage output end of the vehicle controller, and the other end of the inertia switch is electrically connected with the first voltage output end of the vehicle controller and each low-voltage connector.
8. The vehicle high-voltage interlock system according to claim 1, further comprising: an emergency switch;
the interlocking voltage output end of the whole vehicle controller comprises a first voltage output end and a second voltage output end;
the emergency switch is electrically connected between a first voltage output end and a second voltage output end of the whole vehicle controller.
9. The vehicle high-voltage interlock system according to claim 1, further comprising: a first resistor and a second resistor;
the interlocking voltage output end of the whole vehicle controller comprises a first voltage output end and a second voltage output end;
the first end of the first resistor is electrically connected with a first voltage output end of the vehicle control unit, the second end of the first resistor is electrically connected with the first end of the second resistor and each low-voltage connector, and the second end of the second resistor is electrically connected with a second voltage output end of the vehicle control unit.
10. A vehicle characterized by comprising a high-voltage interlock system of a vehicle according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211182355.8A CN115476693A (en) | 2022-09-27 | 2022-09-27 | Vehicle and high-voltage interlocking system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211182355.8A CN115476693A (en) | 2022-09-27 | 2022-09-27 | Vehicle and high-voltage interlocking system thereof |
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| CN115476693A true CN115476693A (en) | 2022-12-16 |
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