CN111532132A - High-voltage interlocking detection device, processing method and automobile - Google Patents
High-voltage interlocking detection device, processing method and automobile Download PDFInfo
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- CN111532132A CN111532132A CN201910053889.2A CN201910053889A CN111532132A CN 111532132 A CN111532132 A CN 111532132A CN 201910053889 A CN201910053889 A CN 201910053889A CN 111532132 A CN111532132 A CN 111532132A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention discloses a high-voltage interlocking detection device, a processing method and an automobile, wherein the detection device comprises: the detection circuit comprises at least two high-voltage devices, at least two high-voltage interlocking loops and a controller; the controller is respectively connected with the at least two detection circuits; the controller is used for acquiring voltage signals of the at least two detection circuits, determining whether the working state of the high-voltage device is abnormal or not according to the voltage signals, and controlling the vehicle to carry out fault processing according to the working state of the high-voltage device. The embodiment can adopt different treatment measures according to the current state of the vehicle aiming at the high-voltage interlocking loop faults of different high-voltage devices, ensures high-voltage safety, furthest retains the function of the whole vehicle, and solves the problems of unexpected high-voltage power-off and influence on driving control caused by the current high-voltage interlocking treatment strategy.
Description
Technical Field
The invention relates to the technical field of high-voltage interlocking detection, in particular to a high-voltage interlocking detection device, a high-voltage interlocking processing method and an automobile.
Background
With the rapid development of new energy vehicles, the number of high-voltage components on the whole vehicle is increasing, and therefore, it is becoming more important to control the safety of the high-voltage components on the whole vehicle, and the high-voltage Interlock is also referred to as a hazardous high-voltage Interlock Loop (HVIL): through using electrical signal, come the electric integrality and the continuity of inspection whole car high voltage product, wire, connector and protecting cover, when discerning the return circuit anomaly, in time break high voltage electricity.
At present, when an electric automobile has a high-voltage interlocking fault, the whole automobile needs to ensure that a high-voltage system is safely powered off in a proper mode, the high-voltage system cannot be powered on before the fault is eliminated, and meanwhile, a corresponding Diagnostic fault Code (DTC) is triggered.
The existing high-voltage interlocking implementation scheme is that a whole high-voltage loop is connected in series mostly through a low-voltage wire harness, the whole vehicle controller is used for detecting in a unified mode, when the whole vehicle controller identifies that the wire harness is disconnected or not connected, the whole vehicle can control high-voltage disconnection, and therefore high-voltage command cutting is conducted out of expectation, and inconvenience is brought to users.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-voltage interlocking detection device, a high-voltage interlocking processing method and an automobile, and solves the problems that unexpected high-voltage power-off and driving control are influenced due to the existing high-voltage interlocking processing strategy.
According to an aspect of the present invention, there is provided a high voltage interlock detection apparatus including:
the detection circuit comprises at least two high-voltage devices, at least two high-voltage interlocking loops and a controller;
the controller is respectively connected with the at least two detection circuits;
the controller is used for acquiring voltage signals of the at least two detection circuits, determining whether the working state of the high-voltage device is abnormal or not according to the voltage signals, and controlling the vehicle to carry out fault processing according to the working state of the high-voltage device.
Optionally, the controller is further configured to determine whether the working states of two voltage signal acquisition circuits in the detection circuit are abnormal according to the voltage signal, and when one of the two voltage signal acquisition circuits is abnormal, control the vehicle to perform fault processing.
Optionally, the high-voltage interlock loop of the high-voltage device is connected to the detection circuit through a high-voltage connector.
Optionally, the high voltage device includes: at least one of a battery pack, a motor, an air conditioning compressor, a heater, a slow charging device, and a fast charging device of a vehicle.
According to another aspect of the present invention, there is provided a high voltage interlock detection processing method applied to the high voltage interlock detection apparatus, including:
respectively acquiring voltage signals of at least two detection circuits;
determining whether the working state of the high-voltage device is abnormal or not according to the voltage signal;
and controlling the vehicle to carry out fault treatment according to the working state of the high-voltage device.
Optionally, controlling the vehicle to perform fault processing according to the working state of the high-voltage device, including:
when the voltage signal indicates that at least one high-voltage device has a fault, respectively judging the fault level of the at least one high-voltage device with the fault;
acquiring the highest fault grade in the fault grades of the at least one high-voltage device;
and controlling the vehicle to perform fault treatment according to the highest fault level.
Optionally, according to the highest fault level, controlling the vehicle to perform fault processing, including:
when the highest fault level is a first level, controlling an instrument of the vehicle to display fault information and power off at high voltage;
when the highest fault level is a second level, controlling the instrument to display fault information and obtain the current speed of the vehicle, if the current speed is less than or equal to a first speed, controlling the high voltage of the vehicle, and if the current speed is greater than the first speed, controlling the speed of the vehicle to be less than a second speed, wherein the second speed is greater than the first speed;
and when the highest fault level is a third level, controlling the instrument to display fault information and obtain the current charging state of the vehicle, and if the vehicle is charging, controlling the vehicle to stop charging and power off at high voltage.
Optionally, respectively determining the fault level of the at least one high-voltage device with the fault, including:
if the high-voltage device with the fault is a battery pack or a motor, judging the fault grade of the high-voltage device to be a first grade;
if the high-voltage device with the fault is an air conditioner or a heater, judging the fault grade of the high-voltage device to be a second grade;
and if the high-voltage device with the fault is the fast charging device or the slow charging device, judging the fault grade of the high-voltage device to be a third grade.
Optionally, the high-voltage interlock detection processing method further includes:
determining whether the working states of two voltage signal acquisition circuits in the detection circuit are abnormal or not according to the voltage signals;
and if one of the two voltage signal acquisition circuits is abnormal, controlling an instrument of the vehicle to display a fault of the detection circuit.
According to another aspect of the present invention, there is provided an automobile, characterized by comprising the high-voltage interlock detection device.
The embodiment of the invention has the beneficial effects that:
the invention provides a high-voltage interlocking detection device, a processing method and an automobile, wherein one high-voltage interlocking detection circuit in the detection device corresponds to a high-voltage interlocking loop of a high-voltage device, the embodiment can judge whether the working state of the corresponding high-voltage interlocking loop is abnormal or not according to voltage signals of different detection circuits, when any high-voltage device in the detection device is abnormal, the detection device can quickly diagnose the fault type and judge the fault position, and further perform related processing according to the fault condition and by combining the current state of the automobile.
Drawings
FIG. 1 is a schematic structural diagram of a high-voltage interlock detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a detection circuit according to an embodiment of the present invention;
FIG. 3 shows one of the flow charts of the high voltage interlock detection processing method of the embodiment of the present invention;
fig. 4 shows a second flowchart of the high-voltage interlock detection processing method according to the embodiment of the invention.
[ description of reference ]
1-high voltage devices; 2-a detection circuit; 3-a controller; 4-high voltage connector;
41-a first low voltage terminal; 42-a second low voltage terminal; 21-a power supply; 22 — a first resistance;
23-a second resistor; 24-third resistance; 25-a first filtering unit; 26-a second filtering unit;
27-a circuit connector; 28 — a first signal processing unit; 29 — a second signal processing unit;
251 — fourth resistor; 252 — a first capacitance; 261-fifth resistance; 262-a second capacitance;
271 — a first plug port; 272 — second jack port.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
First embodiment
The present embodiment provides a high-voltage interlock detection device, as shown in fig. 1, including:
the device comprises at least two high-voltage devices 1, at least two detection circuits 2 of high-voltage interlocking loops and a controller 3;
one of the detection circuits 2 is correspondingly connected with a high-voltage interlocking loop of one of the high-voltage devices 1, and the controller 3 is respectively connected with the at least two detection circuits 2;
the controller 3 is configured to obtain voltage signals of the at least two detection circuits 2, determine whether the working state of the high-voltage device 1 is abnormal according to the voltage signals, and control the vehicle to perform fault processing according to the working state of the high-voltage device 1.
In this embodiment, one detection circuitry 2 corresponds one connection high-voltage device 1's high-voltage interlocking return circuit, can realize the difference the independent detection and the judgement of high-voltage device 1's high-voltage interlocking return circuit, a certain one among the detection device when high-voltage device 1's high-voltage interlocking return circuit appears unusually, detection device can quick diagnosis fault type and judge the fault location, and then according to the fault situation, combines the vehicle current state, carries out relevant processing, has solved present high-voltage interlocking detection device and can not carry out the problem of fault location, and can guarantee the controllability of vehicle under the prerequisite of whole car safety power consumption.
In this embodiment, the controller 3 is a Power integrated Unit (PEU) and a Vehicle Control Unit (VCU), the PEU is configured to obtain a voltage signal of the detection circuit 2, and send the voltage signal to the VCU, and the VCU analyzes the voltage signal, determines the high-voltage interlock loop, and controls the Vehicle to perform related fault processing.
Preferably, the high-voltage interlock loop of the high-voltage device 1 is connected with the detection circuit 2 through a high-voltage connector 4.
In this embodiment, the high-voltage connector 4 is convenient for the assembly and disassembly of the high-voltage interlocking circuit and the detection circuit 2, and when the high-voltage interlocking circuit or the detection circuit 2 is abnormal, the abnormal component can be replaced independently, so that the waste of the intact component or the repeated disassembly is avoided.
Specifically, as shown in fig. 2, the detection circuit 2 includes:
a power supply 21 including a voltage output terminal;
a first resistor 22, a second resistor 23 and a third resistor 24 connected in series between the voltage output terminal of the power supply 21 and a ground terminal in sequence;
a first filtering unit 25, one end of which is connected between the first resistor 22 and the second resistor 23, and the other end of which is connected to a first signal input end of the controller 3;
and a second filtering unit 26, one end of which is connected between the second resistor 23 and the third resistor 24, and the other end of which is connected to a second signal input end of the controller 3.
Wherein the first low voltage terminal 41 of the high voltage connector 4 is connected between the first resistor 22 and the second resistor 23, and the second low voltage terminal 42 of the high voltage connector 4 is connected between the second resistor 23 and the third resistor 24.
In this embodiment, the detection circuit 2 includes a power supply, three resistors, two filtering units, and a controller. The power supply 21 supplies power to a 12V storage battery, the three resistors realize the function of voltage division, the first low-voltage terminal 11 and the second low-voltage terminal 12 of the high-voltage connector 1 are respectively connected between the two adjacent resistors, and the controller 3 determines the connection state of the high-voltage connector 4 through voltage signals of the first signal input end and the second signal input end, and determines whether the working state of the high-voltage interlocking loop is abnormal or not according to the connection state of the high-voltage connector 4.
In this embodiment, the connection state of the high voltage connector 4 is comprehensively determined according to two voltage signals, and when one of the voltage signal acquisition circuits fails, such as grounding or short circuit, the connection state of the high voltage connector 4 can be determined according to the voltage signal of the other voltage signal acquisition circuit, so that the detection circuit 2 has a certain fault-tolerant function.
Here, the first resistor 22, the second resistor 23, and the third resistor 24 may all be a single resistor, or a plurality of resistors may be connected in series or in parallel. In addition, whether the working state of the high-voltage interlocking circuit is abnormal or not is determined according to the connection state of the high-voltage connector 4, specifically, when the high-voltage connector 4 is determined to be in a complete connection state, the working state of the high-voltage interlocking circuit is determined to be normal, and when the high-voltage connector 4 is determined to be in a complete disconnection state, a low-voltage terminal of the high-voltage interlocking circuit is in a power supply short-circuit state or a ground short-circuit state, the high-voltage interlocking circuit is determined to be in an abnormal working state.
Preferably, the controller 3 is further configured to determine whether the operating states of two voltage signal acquisition circuits in the detection circuit 2 are abnormal according to the voltage signal, and control the vehicle to perform fault processing when one of the two voltage signal acquisition circuits is abnormal.
In this embodiment, the detection circuit 2 includes two voltage signal acquisition circuits, and when one of the voltage signal acquisition circuits is out of order, such as ground connection or short circuit, the connection state of the high-voltage connector 4 can be determined according to the voltage signal of the other voltage signal acquisition circuit, so that the controller 3 can determine whether the voltage signal acquisition circuit is out of order according to the voltage signal, and when one of the voltage signal acquisition circuits is out of order, control the vehicle to perform corresponding fault processing, so as to ensure the normal operation of the detection circuit 2, and further ensure the power consumption safety of the vehicle.
Specifically, the high-voltage device 1 includes: at least one of a battery pack, a motor, an air conditioning compressor, a heater, a slow charging device, and a fast charging device of a vehicle.
In this embodiment, one detection circuit 2 is connected with one high-voltage interlocking loop of high-voltage device 1 correspondingly, can realize different the independent detection and the judgement of high-voltage interlocking loop of high-voltage device 1, when a certain one of detection device high-voltage interlocking loop of high-voltage device 1 appears unusually, detection device can quick diagnosis fault type to judge the fault location, and then according to the fault situation, combine the vehicle current state to carry out relevant processing, with furthest's the function of remaining whole car.
For example, when the detection device determines that a device with a fault is the air conditioner compressor, the fault condition does not affect the power utilization safety of the whole vehicle, if the vehicle is in the driving process, the vehicle is controlled to remind a driver, the vehicle speed is reduced, the high-voltage and low-voltage are not needed, and the function of the whole vehicle is retained to the maximum extent. Therefore, the problem that the driving control is influenced due to the fact that high voltage power-off is not expected because fault location cannot be carried out by the conventional high-voltage interlocking detection device is solved.
Second embodiment
The present embodiment provides a high-voltage interlock detection processing method, which is applied to the high-voltage interlock detection apparatus according to the first embodiment, as shown in fig. 3, and includes:
and step 33, controlling the vehicle to perform fault treatment according to the working state of the high-voltage device.
In this embodiment, the voltage signals of the detection circuit in the detection apparatus according to the first embodiment are respectively obtained through the a/D interface of the PEU, and are sent to the VCU, and the VCU determines the working state of the high-voltage interlock loop of the high-voltage device corresponding to the voltage signals through the voltage signals. In this embodiment, one of the detection circuits corresponds to one of the high-voltage interlocking circuits of the high-voltage device, so that independent detection and judgment of the high-voltage interlocking circuits of different high-voltage devices 1 can be realized, when an abnormality occurs in one of the detection devices of the high-voltage interlocking circuits of one of the high-voltage devices 1, the detection device can quickly diagnose the fault type and judge the fault position, and further, according to the fault condition, the vehicle state information is combined to perform relevant processing, so that the normal use of the function of the vehicle is ensured as far as possible on the premise of ensuring the high-voltage safety.
Specifically, as shown in fig. 4, step 33 includes:
And 333, controlling the vehicle to perform fault processing according to the highest fault level.
In this embodiment, the fault classes sequentially include, from high to low: the first grade, the second grade and the third grade, wherein the larger the electric safety influence of the high-voltage device with the problem on the vehicle, the more serious the fault problem, and the higher the corresponding fault grade. According to the embodiment, the fault treatment is carried out according to the highest fault grade in the fault grades, so that the power utilization safety of the vehicle can be effectively ensured.
Specifically, step 331 includes:
if the high-voltage device with the fault is a battery pack or a motor, judging the fault grade of the high-voltage device to be a first grade;
if the high-voltage device with the fault is an air conditioner or a heater, judging the fault grade of the high-voltage device to be a second grade;
and if the high-voltage device with the fault is the fast charging device or the slow charging device, judging the fault grade of the high-voltage device to be a third grade.
Specifically, step 333 includes:
when the highest fault level is a first level, controlling an instrument of the vehicle to display fault information and power off at high voltage;
when the highest fault level is a second level, controlling the instrument to display fault information and obtain the current speed of the vehicle, if the current speed is less than or equal to a first speed, controlling the high voltage of the vehicle, and if the current speed is greater than the first speed, controlling the speed of the vehicle to be less than a second speed, wherein the second speed is greater than the first speed;
and when the highest fault level is a third level, controlling the instrument to display fault information and obtain the current charging state of the vehicle, and if the vehicle is charging, controlling the vehicle to stop charging and power off at high voltage.
In the embodiment, the first grade is the highest grade in the fault grades, and at the moment, the vehicle instrument is controlled to display the fault information and power off at high voltage, so that the power utilization safety of the vehicle can be effectively ensured; the second grade is the more serious grade in the fault grades, at the moment, the vehicle instrument is controlled to display the fault information, and the vehicle speed is controlled to be less than the second preset vehicle speed, so that the operability of the vehicle can be effectively ensured and unnecessary parking can be avoided in the running process of the vehicle; the third grade is the lowest grade in the fault grades, at the moment, the vehicle instrument is controlled to display the fault information, the charging of the vehicle is forbidden, the operability of the vehicle can be ensured in a wider range, and the vehicle can be operated under the condition of no charging.
For example, when only the fault of the high-voltage interlocking circuit of the quick charging device is detected, the highest fault level is determined as a third level, at this time, if the vehicle is in quick charging, the instrument of the vehicle is controlled to display fault information, and the vehicle is prohibited from quick charging, and if the vehicle is not in quick charging, only the instrument of the vehicle is controlled to display the fault information;
when only the fault of the high-voltage interlocking circuit of the slow charging device is detected, the highest fault level is judged as a third level, at the moment, if the vehicle is subjected to slow charging, the instrument of the vehicle is controlled to display fault information, the vehicle is forbidden to be subjected to slow charging, and if the vehicle is not subjected to slow charging, only the instrument of the vehicle is controlled to display the fault information;
when the fault of the high-voltage interlocking loop of the slow charging device is detected and the fault of the high-voltage interlocking loop of the air conditioner compressor is detected, the highest fault level is judged as a second level, at the moment, if the whole vehicle is not provided with high voltage electricity, an instrument of the vehicle is controlled to display fault information and prohibit the high voltage electricity, if the whole vehicle is provided with the high voltage electricity, namely the vehicle runs, the instrument of the vehicle is controlled to display the fault information and obtain the current vehicle speed of the vehicle, if the current vehicle speed is less than or equal to the first vehicle speed, the high voltage electricity of the vehicle is controlled, and if the current vehicle speed is greater than the first vehicle speed, the vehicle speed of the vehicle is controlled;
when the fault of the high-voltage interlocking loop of at least one of the battery pack and the motor is detected, the highest fault level is judged as a first level, at the moment, if the whole vehicle is not provided with high voltage electricity, the instrument of the vehicle is controlled to display fault information and forbid the high voltage electricity, and if the whole vehicle is provided with the high voltage electricity, the instrument of the vehicle is controlled to display the fault information and power off at high voltage.
According to the method, the fault grades of the high-voltage devices with faults are distinguished, the fault grades are arbitrated, the highest fault grade is obtained, corresponding different fault processing is carried out according to different highest fault grades and the current state of the vehicle, the functions of the whole vehicle are retained to the maximum extent on the premise that the vehicle is safely powered on, and the problem that driving control is influenced by power supply under high voltage except for expectation is avoided.
As shown in fig. 3, the high-voltage interlock detection processing method further includes:
and step 35, if one of the two voltage signal acquisition circuits is abnormal, controlling an instrument display detection circuit of the vehicle to be in fault.
In this embodiment, the detection circuit has a fault-tolerant function, and includes two voltage signal acquisition circuits, and when one of them voltage signal acquisition circuit broke down, does not influence the collection of another way voltage signal acquisition circuit to voltage signal, and then can not influence detection and judgement of detection circuit to the high-voltage interlocking return circuit operating condition of high-voltage device, when one of them voltage signal acquisition circuit broke down, the instrument of control vehicle shows detection circuit trouble to it is right at vehicle idle time to indicate the driver detection circuit restores, in order to guarantee detection device's effective operation, does not influence other operations of vehicle simultaneously.
In addition, in the present embodiment, when a high-voltage interlock fault is identified, the fault processing cannot be recovered within one power-up cycle, and the low-voltage is necessary. And the next time of power supply is restarted, the fault is recovered, and the fault processing party can recover.
The high-voltage interlocking detection processing method provided by the embodiment can control the vehicle to perform related processing according to the highest fault level of the vehicle and the current state of the vehicle when the vehicle has different high-voltage device faults, and the different highest fault levels correspond to different fault processing modes, so that the functions of the whole vehicle can be retained to the maximum extent on the premise of the electric safety of the whole vehicle, the operability of the vehicle is ensured, and the problems of unexpected high-voltage power-down and influence on driving control caused by the current high-voltage interlocking processing strategy are solved.
Third embodiment
This embodiment provides an automobile including the high-voltage interlock detection apparatus according to the first embodiment. Whether the high-voltage interlocking loop working state of different high-voltage devices is abnormal or not can be detected and judged, the abnormal high-voltage devices can be quickly positioned, different fault handling modes are adopted according to the abnormal different high-voltage devices, unnecessary high-voltage reduction is avoided on the premise that the electric safety of the whole vehicle is guaranteed, and the function of the whole vehicle is retained to the maximum extent. In addition, when the abnormality of the plurality of high-voltage devices is detected, the fault level of each abnormal high-voltage device is judged, arbitration is performed on the fault levels, the highest fault level is obtained, the vehicle is controlled to perform relevant processing according to the highest fault level, and the safe power utilization of the vehicle is effectively guaranteed. Therefore, the problem that driving control is influenced by unexpected high-voltage power-off caused by the current high-voltage interlocking processing strategy is solved.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A high voltage interlock detection device, comprising:
the device comprises at least two high-voltage devices (1), at least two detection circuits (2) of high-voltage interlocking loops and a controller (3);
one detection circuit (2) is correspondingly connected with a high-voltage interlocking loop of one high-voltage device (1), and the controller (3) is respectively connected with the at least two detection circuits (2);
the controller (3) is used for acquiring voltage signals of the at least two detection circuits (2), determining whether the working state of the high-voltage device (1) is abnormal or not according to the voltage signals, and controlling the vehicle to carry out fault treatment according to the working state of the high-voltage device (1).
2. The high-voltage interlock detection device according to claim 1, wherein the controller (3) is further configured to determine whether the operating states of two voltage signal acquisition circuits in the detection circuit (2) are abnormal according to the voltage signal, and control the vehicle to perform fault handling when one of the two voltage signal acquisition circuits is abnormal.
3. The high-voltage interlock detection device according to claim 1, wherein the high-voltage interlock loop of the high-voltage device (1) and the detection circuit (2) are connected by a high-voltage connector (4).
4. The high voltage interlock detection device according to claim 1, wherein said high voltage device (1) comprises: at least one of a battery pack, a motor, an air conditioning compressor, a heater, a slow charging device, and a fast charging device of a vehicle.
5. A high-voltage interlock detection processing method applied to the high-voltage interlock detection device according to any one of claims 1 to 4, comprising:
respectively acquiring voltage signals of at least two detection circuits;
determining whether the working state of the high-voltage device is abnormal or not according to the voltage signal;
and controlling the vehicle to carry out fault treatment according to the working state of the high-voltage device.
6. The high-voltage interlock detection processing method according to claim 5, wherein controlling a vehicle to perform fault processing according to the operating state of the high-voltage device comprises:
when the voltage signal indicates that at least one high-voltage device has a fault, respectively judging the fault level of the at least one high-voltage device with the fault;
acquiring the highest fault grade in the fault grades of the at least one high-voltage device;
and controlling the vehicle to perform fault treatment according to the highest fault level.
7. The high-voltage interlock detection processing method according to claim 6, wherein controlling a vehicle to perform fault processing according to the highest fault level comprises:
when the highest fault level is a first level, controlling an instrument of the vehicle to display fault information and power off at high voltage;
when the highest fault level is a second level, controlling the instrument to display fault information and obtain the current speed of the vehicle, if the current speed is less than or equal to a first speed, controlling the high voltage of the vehicle, and if the current speed is greater than the first speed, controlling the speed of the vehicle to be less than a second speed, wherein the second speed is greater than the first speed;
and when the highest fault level is a third level, controlling the instrument to display fault information and obtain the current charging state of the vehicle, and if the vehicle is charging, controlling the vehicle to stop charging and power off at high voltage.
8. The high voltage interlock detection processing method according to claim 7, wherein determining the fault level of the at least one high voltage device in which a fault occurs, respectively, comprises:
if the high-voltage device with the fault is a battery pack or a motor, judging the fault grade of the high-voltage device to be a first grade;
if the high-voltage device with the fault is an air conditioner or a heater, judging the fault grade of the high-voltage device to be a second grade;
and if the high-voltage device with the fault is the fast charging device or the slow charging device, judging the fault grade of the high-voltage device to be a third grade.
9. The high-voltage interlock detection processing method according to claim 5, further comprising:
determining whether the working states of two voltage signal acquisition circuits in the detection circuit are abnormal or not according to the voltage signals;
and if one of the two voltage signal acquisition circuits is abnormal, controlling an instrument of the vehicle to display a fault of the detection circuit.
10. An automobile, characterized by comprising a high-voltage interlock detection device according to any one of claims 1 to 4.
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| CN201910053889.2A CN111532132A (en) | 2019-01-21 | 2019-01-21 | High-voltage interlocking detection device, processing method and automobile |
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| CN201910053889.2A CN111532132A (en) | 2019-01-21 | 2019-01-21 | High-voltage interlocking detection device, processing method and automobile |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469669A (en) * | 2020-05-11 | 2020-07-31 | 上海元城汽车技术有限公司 | High-voltage interlocking detection system and method and electric vehicle |
| CN112213624A (en) * | 2020-09-29 | 2021-01-12 | 奇瑞新能源汽车股份有限公司 | Test device and method for verifying interlocking function of high-voltage loop of electric automobile |
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| CN111469669A (en) * | 2020-05-11 | 2020-07-31 | 上海元城汽车技术有限公司 | High-voltage interlocking detection system and method and electric vehicle |
| CN111469669B (en) * | 2020-05-11 | 2021-12-03 | 上海元城汽车技术有限公司 | High-voltage interlocking detection system and method and electric vehicle |
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| CN114312320A (en) * | 2021-12-23 | 2022-04-12 | 上海易咖智车科技有限公司 | Vehicle power supply and distribution fault diagnosis method and vehicle power supply and distribution system |
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