CN115476693A - Vehicle and high-voltage interlocking system thereof - Google Patents

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

A vehicle and its high-voltage interlocking system

technical field

The invention relates to the technical field of vehicles, in particular to a vehicle and a high-voltage interlocking system thereof.

Background technique

In recent years, with the increasing international environmental and energy crisis, countries all over the world are looking for alternatives to traditional energy sources. With the increase in car sales, the research and development of new energy vehicles has become a top priority in response to environmental protection and energy crises. Due to the obvious performance attenuation of power batteries in low-temperature environments, which seriously affects the cruising range, the number of pure electric vehicles in northern my country is relatively low, and hybrid electric vehicles (HEV) are favored by consumers.

Although the hybrid electric vehicle (HEV) does not have the plug-in charging function, it is still equipped with a power battery above 350V, and high-voltage safety is still a key design direction. In the ISO international standard, it is stipulated that the high-voltage parts of the vehicle should have a high-voltage interlock device.

For the implementation of high-voltage interlock, it is more common to set interlock pins on the high-voltage and low-voltage connectors of each high-voltage component, and connect the high-voltage components in series through the low-voltage circuit to form an interlock circuit. Voltage, the vehicle monitors the interlock voltage in real time. When the plug connection of the high-voltage component is abnormal or damaged, the voltage of the interlock circuit changes, the vehicle recognizes the fault state, and reports the high-voltage interlock fault. Although this solution can provide real-time monitoring of the interlock status function, for maintenance and troubleshooting, it is necessary to disassemble a large number of vehicle components and connectors to measure the circuit status, and hybrid electric (HEV) vehicles often use high-voltage components such as power batteries It is arranged under the rear seats, the spare tire basin and other places that are not easy to operate. If the vehicle reports a high-voltage interlock failure, the troubleshooting work will be very cumbersome and time-consuming.

Contents of the invention

The invention provides a vehicle and its high-voltage interlocking system to improve the inspection efficiency of high-voltage interlocking faults of side beams.

According to one aspect of the present invention, there is provided a high-voltage interlocking system for a vehicle, including: a vehicle controller, a plurality of high-voltage components, and a plurality of voltage monitoring chips corresponding to the plurality of high-voltage components;

The high-voltage components include high-voltage connectors and low-voltage connectors,

In each of the high-voltage components, the high-voltage connector is electrically connected to the interlock voltage output end of the vehicle controller through the low-voltage connector to form an interlock circuit, and each of the voltage monitoring chips is connected in series one by one. Connected to the interlock circuit of each high-voltage component;

The voltage monitoring chip is used to obtain the voltage signal of the interlock circuit in real time, and determine the interlock 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 interlock controller communicates with each of the voltage monitoring chips;

Each of the voltage monitoring chips is further configured to send failure information of the high-voltage component to the interlock controller after determining that the high-voltage component is faulty;

The interlock controller is used for latching a fault code according to the fault information.

Optionally, the interlock controller communicates with the vehicle controller;

The interlock controller is configured to send the fault information to the vehicle controller after receiving the fault information of the high-voltage component;

The vehicle controller is used to control the 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: T-box;

The T-box communicates with the interlock controller;

The interlock controller is further configured to send the fault information to the T-box after receiving the fault information of the high voltage component;

The T-box is used to send the received fault information to the cloud.

Optionally, the high-voltage interlocking system of the vehicle also includes: an alarm device;

The interlock controller is also communicatively connected with the alarm device; the interlock controller is also used to control the alarm device to give an alarm after receiving the failure information of the high voltage component.

Optionally, the high voltage interlock system of the vehicle further includes: a maintenance switch;

The interlock voltage output terminal of the vehicle controller includes a first voltage output terminal and a second voltage output terminal;

One end of the maintenance switch is electrically connected to the first voltage output end of the vehicle controller, and the other end of the maintenance switch is electrically connected to the second voltage output end of the vehicle controller and each of the low-voltage connectors. connect.

Optionally, the high voltage interlock system of the vehicle further includes: an inertia switch;

The interlock voltage output terminal of the vehicle controller includes a first voltage output terminal and a second voltage output terminal;

One end of the inertia switch is electrically connected to the second voltage output end of the vehicle controller, and the other end of the inertia switch is electrically connected to the first voltage output end of the vehicle controller and each of the low-voltage connectors. connect.

Optionally, the high voltage interlock system of the vehicle further includes: an emergency switch;

The interlock voltage output terminal of the vehicle controller includes a first voltage output terminal and a second voltage output terminal;

The emergency switch is electrically connected between the first voltage output terminal and the second voltage output terminal of the vehicle controller.

Optionally, the high voltage interlock system of the vehicle further includes: a first resistor and a second resistor;

The interlock voltage output terminal of the vehicle controller includes a first voltage output terminal and a second voltage output terminal;

The first end of the first resistor is electrically connected to the first voltage output end of the vehicle controller, and the second end of the first resistor is connected to the first end of the second resistor and each of the low-voltage The second end of the second resistor is electrically connected to the second voltage output end of the vehicle controller.

According to another aspect of the present invention, a vehicle is provided, including the above-mentioned high voltage interlock system of the vehicle.

In the high-voltage interlock system of the vehicle provided by the embodiment of the present invention, a voltage monitoring chip is provided for each high-voltage component, and the interlock voltage is provided for each high-voltage component through the vehicle controller, and the high-voltage connector and low-voltage connection of the high-voltage component A voltage monitoring chip is installed in the interlocking loop formed by the interlocking voltage output terminal of the device and the vehicle controller, so that the detection of the working status of each high-voltage component can be realized. When it is determined that a certain high-voltage component is faulty, it is not necessary to After troubleshooting, the fault target can be directly locked and repaired, which greatly improves the efficiency of interlock fault repair of various high-voltage components, and the voltage monitoring chip can be configured to adopt a more accurate fault detection method, which can effectively avoid misjudgment. , the principle of the method is simple, reliable and feasible.

It should be understood that the content described in this section is not intended to identify key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will be easily understood from the following description.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic structural diagram of a high voltage interlock system of a vehicle provided by 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 present invention;

Fig. 3 is a schematic structural diagram of another high-voltage interlocking system of a vehicle provided by an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of another high-voltage interlocking system of a vehicle provided by an embodiment of the present invention.

detailed description

In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

Fig. 1 is a schematic structural diagram of a high-voltage interlock system of a vehicle provided by an embodiment of the present invention. As shown in Fig. 1 , the high-voltage interlock system of the vehicle includes: a vehicle controller 10, a plurality of high-voltage components 20, and A plurality of voltage monitoring chips 30 provided in a one-to-one correspondence with a plurality of high-voltage components 20; the high-voltage components 20 include a high-voltage connector 20a and a low-voltage connector 20b, and in each high-voltage component 20, the high-voltage connector 20a is connected to the vehicle The interlocking voltage output terminals (the first voltage output terminal VOUT1 and the second voltage output terminal VOUT2) of the controller 10 are electrically connected to form an interlocking circuit, and the voltage monitoring terminals of each voltage monitoring chip 30 are electrically connected to each high-voltage component 20 in one-to-one correspondence In the interlock loop; the voltage monitoring chip 30 is used to obtain the voltage signal of the interlock loop in real time, and determine the interlock state of the high voltage component 20 according to the voltage signal.

Specifically, the interlock voltage output terminal of the vehicle controller 10 may include a first voltage output terminal VOUT1 and a second voltage output terminal VOUT2, the voltage output by the first voltage output terminal VOUT may be 5V, and the second voltage output terminal VOUT2 may be The output can be 0V. A vehicle may include a plurality of high-voltage components 20, such as a power battery 21, an electric drive assembly 22, a DC-DC converter 23, and an electric compressor 24. 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 two low-voltage interlock pins (the first low-voltage interlock pin a and the second low-voltage interlock pin b), and the low-voltage connector 20b is provided with two low-voltage interlock pins (the third low-voltage interlock pin c and the fourth low-voltage interlock pin d), the first low-voltage interlock pin a is electrically connected to the second low-voltage interlock pin b, the third voltage interlock pin c, and the first voltage monitoring terminal V1 of the voltage monitoring chip 30. The third low-voltage interlock pin c is electrically connected to the first voltage output terminal VOUT1 of the vehicle controller 10; the second low-voltage interlock pin b is electrically connected to the fourth low-voltage interlock pin d and the first voltage monitoring terminal V2 of the voltage monitoring chip 30 connected, and the fourth low voltage interlock pin d is electrically connected to the second voltage output terminal VOUT1 of the vehicle controller 10; thus, the high voltage connector 20a, the low voltage connector 20b of each high voltage component 20 The interlocking voltage output end of each can constitute an interlocking circuit, when the high-voltage connector 20a of a high-voltage component 20 is reliably connected without interlock failure (that is, the low-voltage interlock pin of the high-voltage connector 20a is reliably connected), each high-voltage component 20 The voltage signal in the interlock loop should be kept at about 5V, and the voltage monitoring chip 30 can obtain the voltage signal of the interlock loop in real time. When it is determined that the voltage signal is abnormal, it can be determined that there is an interlock fault in the high-voltage component 20, such as , if there is an interlock fault in a certain high-voltage component 20, the two low-voltage interlock pins of the high-voltage connector 20a may not be reliably connected. At this time, the interlock circuit is open and the voltage is 0. When the detected voltage is 0, It is determined that there is an interlock fault in the high voltage component 20 . Wherein, the first voltage output terminal VOUT1 and the second voltage output terminal VOUT2 of the vehicle controller 10 can be electrically connected through at least one voltage dividing resistor R0 as an interlocking main loop, and the voltage dividing resistor R0 can prevent the first voltage output terminal VOUT1 and the second voltage output terminal VOUT1 from The second voltage output terminal VOUT2 is short-circuited; the voltage monitoring chip can be any chip with voltage detection function and communication function.

Exemplarily, due to uncontrollable factors in the driving of the vehicle or other possible interference factors, the voltage signals of the interlock loops of each high-voltage component 20 may fluctuate within a range, so the voltage obtained by the voltage monitoring chip 30 can be set to When the signal is within the preset voltage range, it is determined that the voltage signal is normal, and then it can be determined that the corresponding high-voltage component 20 is in a normal working state. For example, if the interlock voltage provided by the vehicle controller 20 is 5V, the preset voltage range can be set to 5V ±2.5V, when the obtained voltage signal is not within the preset voltage range, it is determined that the voltage signal is abnormal; in order to avoid misjudgment of the working status of the high-voltage After a preset time (for example, 20s), it is determined that the high voltage component 20 is faulty. Alternatively, when it is determined that the voltage signal is abnormal, the voltage signal of the interlock circuit can be obtained continuously, and continue to judge whether the subsequent voltage signal remains abnormal, and record the time that the voltage signal remains abnormal. If the duration of the abnormal voltage signal exceeds The first preset time (for example 20s), is then determined as an effective abnormal voltage record, and the voltage monitoring chip 30 records the abnormal voltage signal and continues to obtain the voltage signal, if the voltage signal abnormal record is continuously triggered and the number of times exceeds the preset If the number of times is set (for example, 3 times), the occurrence of the high-voltage component 20 can be determined. In this way, the extremely short-term voltage fluctuation of the interlock circuit caused by interference can be effectively filtered, thereby effectively avoiding false alarms of interlock faults.

In the high-voltage interlock system of the vehicle provided by the embodiment of the present invention, a voltage monitoring chip is provided for each high-voltage component, and the interlock voltage is provided for each high-voltage component through the vehicle controller, and the high-voltage connector and low-voltage connection of the high-voltage component A voltage monitoring chip is installed in the interlocking loop formed by the interlocking voltage output terminal of the device and the vehicle controller, so that the detection of the working status of each high-voltage component can be realized. When it is determined that a certain high-voltage component is faulty, it is not necessary to After troubleshooting, the fault target can be directly locked and repaired, which greatly improves the efficiency of interlock fault repair of various high-voltage components, and the voltage monitoring chip can be configured to adopt a more accurate fault detection method, which can effectively avoid misjudgment. , the principle of the method is simple, reliable and feasible.

Optionally, FIG. 2 is a schematic diagram of another high-voltage interlock system of a vehicle provided by an embodiment of the present invention. As shown in FIG. 2 , the high-voltage interlock system of the vehicle further includes an interlock controller 40, the interlock controller 40 is communicatively connected with each voltage monitoring chip 30; each voltage monitoring chip 30 is also used to send the failure information of the high voltage component 20 to the interlock controller 40 after determining the failure of the high voltage component.

Specifically, an interlock controller 40 can also be set in the high-voltage interlock system, and each voltage monitoring chip 30 can also output the fault of the high-voltage component 20 to the interlock controller 40 after detecting that the corresponding high-voltage component has an interlock fault. information, the interlock controller 40, after receiving the fault information, latches the fault code related to the fault information, and records the interlock fault of the high-voltage component, so that it can be used as fault data for subsequent maintenance.

Exemplarily, in other feasible embodiments, interlock controllers can be set up for each voltage monitoring chip in one-to-one correspondence, so that each interlock controller is respectively connected to the corresponding voltage monitoring chip for communicating with each Fault information latching fault codes of components, Fig. 3 is a structural schematic diagram of another high-voltage interlock system of a vehicle provided by an embodiment of the present invention, as shown in Fig. 3 , each interlock controller 40 is connected to each voltage monitoring chip 30 A corresponding electrical connection, at this time, the controllers of each high-voltage component can be multiplexed as an interlock controller 40, for example, a power battery controller (BMS) 41 can be set to communicate with the voltage monitoring chip 30 in the power battery interlock circuit Connection, the drive motor controller (MCU) 42 communicates with the voltage monitoring chip 30 in the interlocking loop of the electric drive assembly, and the DC-DC converter controller 43 communicates with the voltage monitoring chip 30 in the interlocking loop of the DC-DC converter Communication connection, the air conditioner controller (AC) 44 is in communication connection with the voltage monitoring chip 30 in the interlock circuit of the electric compressor, so that the setting of the interlock controller can be reduced, which is beneficial to reduce the cost.

Optionally, referring to FIG. 2 , the interlock controller 40 is communicatively connected with the vehicle controller 10; the interlock controller 40 is configured to send the failure information to the vehicle controller after receiving the failure information of the high-voltage component 20 10. The vehicle controller 10 is used to control the high-voltage power supply in the vehicle to stop outputting power after receiving the fault information.

Specifically, after the interlock controller 40 receives the fault information of the high-voltage components, it can also send the fault information to the vehicle controller 10, so that the vehicle controller 10 can power off the high-voltage system of the vehicle to avoid safety accidents happened.

Exemplarily, referring to FIG. 3 , when interlocking controllers 40 are set up for each voltage monitoring chip 30 in one-to-one correspondence, each interlocking controller 40 can be set to communicate with the vehicle controller 10 respectively, so as to target each high-voltage component 20 of the interlock faults are sent to the vehicle controller 10 fault information.

Optionally, continuing to refer to Figure 2, the high-voltage interlocking system of the vehicle also includes T-box 50, T-box

50 communicates with the interlock controller 40; the interlock controller 40 is also used to send the fault information to the T-box 50 after receiving the fault information of the high-voltage component 20; the T-box 50 is used to send the received fault information to the cloud.

Specifically, the interlock controller 40 can communicate with the T-box 50 through a gateway. After the interlock controller 40 receives the fault information of the high-voltage components, it can also send the fault information to the T-box 50, so that the T-box 50 can send the fault information to the cloud in a timely manner, so that the fault information can be classified and stored in the database, so that the maintenance personnel can check the cause of the fault according to the fault information in the database. Uploading vehicle fault information to the cloud, classifying and storing the fault data can be used as data support for intelligent diagnosis of vehicle faults.

Exemplarily, continuing to refer to FIG. 3, when the controllers of each high-voltage component are multiplexed as the interlock controller 40, the power battery controller (BMS) 41, the drive motor controller (MCU) 42 and the DC-DC converter control The controller 43 can send the fault information to the gateway through the power CAN, the air conditioner controller (AC) 44 can send the fault information to the gateway through the comfort CAN, and the gateway can communicate with the T-box through the information CAN to realize the transmission of the fault information.

Optionally, continuing to refer to FIG. 2 , the high-voltage interlock system of the vehicle also includes an alarm device 60; the interlock controller 40 is also communicatively connected with the alarm device 60; After receiving the information, the alarm device 60 is controlled to give an alarm.

Specifically, after receiving the failure information of any one or several high-voltage components 20, the interlock controller 40 outputs an alarm control signal to the alarm device 60, so that the alarm device 60 can alarm in time, so that the user or maintenance personnel can timely respond to the alarm. Signal to take action. Wherein the alarm device 60 may include an indicator light and/or a buzzer and the like.

Exemplarily, continuing to refer to FIG. 3 , when interlocking controllers 40 are set for each voltage monitoring chip 30 in a one-to-one correspondence, each interlocking controller 40 can be set to be electrically connected to an alarm device 60 respectively, so as to target each high-voltage component 20 The interlock faults of the vehicle controller 10 control the alarm device 60 to report to the police respectively.

Optionally, FIG. 4 is a schematic structural diagram of another high-voltage interlock system provided by an embodiment of the present invention. As shown in FIG. 4 , the high-voltage interlock system of the vehicle also includes a maintenance switch K1; The voltage output terminals include a first voltage output terminal VOUT1 and a second voltage output terminal VOUT2; one end of the maintenance switch K1 is electrically connected to the first voltage output terminal VOUT1 of the vehicle controller 10, and the other end of the maintenance switch K1 is connected to the vehicle controller. The second voltage output terminal VOUT2 of 10 is electrically connected to each low-voltage connector 20b.

Specifically, a maintenance switch K1 can also be provided on the parallel main circuit of each interlocking circuit, one end of the maintenance switch K1 can be electrically connected to the first voltage output terminal VOUT1 of the vehicle controller 10, and the other end can be connected to each low-voltage connector 20 The third low-voltage interlock pin c of the second voltage output terminal VOUT2 of the vehicle controller 10 is electrically connected. In this way, when the vehicle is being maintained, the maintenance switch K1 can be controlled to be turned off, and then the interlock circuits of the high-voltage components 20 are powered off. At this time, the interlock controller 40 sends interlock fault information to the vehicle controller 10, and the vehicle The controller 10 can control the high-voltage power supply to be powered off according to the fault information, so as to ensure that the maintenance personnel operate in a safe condition, and avoid the risk of high-voltage electric shock when the maintenance personnel maintain the vehicle.

Optionally, referring to Fig. 4, the high-voltage interlocking system of the vehicle also includes an inertia switch K2; the interlock voltage output terminal of the vehicle controller 10 includes a first voltage output terminal VOUT1 and a second voltage output terminal VOUT2; the inertia switch K2 One end 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 low-voltage connector 20b.

Specifically, an inertia switch K2 can also be provided on the parallel main circuit of each interlocking circuit, one end of the inertia switch K2 can be electrically connected to the second voltage output terminal VOUT2 of the vehicle controller 10, and the other end can be connected to each low-voltage connector 20 The fourth low-voltage interlock pin d of the 10 is electrically connected to the first voltage output terminal VOUT1 of the vehicle controller 10 . When the vehicle collides, the inertia switch is automatically disconnected, and the interlock circuits of each high-voltage component 20 are powered off. At this time, the interlock controller 40 sends interlock fault information to the vehicle controller 10. The fault information controls the high-voltage power supply to cut off the power, so that the vehicle actively cuts off the high-voltage circuit, and prevents the risk of short circuit and fire in the high-voltage wiring harness and components caused by vehicle collision.

Optionally, continuing to refer to FIG. 4, the high-voltage interlock system of the vehicle also includes an emergency switch K3; the interlock voltage output terminals of the vehicle controller 10 include a first voltage output terminal VOUT1 and a second voltage output terminal 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 controller 10 .

Specifically, the first voltage output terminal VOUT1 and the second voltage output terminal VOUT2 of the vehicle controller 10 can also be electrically connected through the emergency switch K3. After professionals check that the circuit is not disconnected or damaged, the emergency switch K3 can be controlled to close, so that each interlock circuit is short-circuited, the interlock function becomes invalid, and the vehicle can be started and driven.

Optionally, continuing to refer 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 Terminal VOUT2; the first terminal of the first resistor R1 is electrically connected to the first voltage output terminal VOUT1 of the vehicle controller 10, the second terminal of the first resistor R1 is connected to the first terminal of the second resistor R2 and each low-voltage connector 20b The second terminal of the second resistor R2 is electrically connected to the second voltage output terminal VOUT2 of the vehicle controller 10 .

Specifically, the first resistor R1 and the second resistor R2 can also be set on the parallel main loop of each interlocking loop for voltage division, and the first resistor R1 and the second resistor R2 are preferably set close to the vehicle controller 10 The position of the interlocking voltage output terminal of each high-voltage component is not arranged between the interlocking circuits of each high-voltage component, so that the circuit voltage of each interlocking circuit can be guaranteed to be consistent, so that the detection standard 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, an embodiment of the present invention also provides a vehicle, which includes the high-voltage interlock system of the vehicle provided in any embodiment of the present invention, so the vehicle provided in the embodiment of the present invention includes the vehicle provided in any embodiment of the present invention. The technical features of the high-voltage interlock system of the vehicle can achieve the beneficial effects of the high-voltage interlock system of the vehicle provided by any embodiment of the present invention. description and will not be repeated here.

The above specific implementation methods do not constitute a limitation to the protection scope of the present invention. It should be apparent to those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made depending on design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within 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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