CN220315193U

CN220315193U - Vehicle dumping protection system

Info

Publication number: CN220315193U
Application number: CN202321606668.1U
Authority: CN
Inventors: 唐修建
Original assignee: Yadea Technology Group Co Ltd
Current assignee: Yadea Technology Group Co Ltd
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2024-01-09
Anticipated expiration: 2033-06-21

Abstract

The utility model discloses a vehicle dumping protection system, which relates to the technical field of vehicles and comprises: the gesture detection module is used for acquiring the inclination angle of the target vehicle and sending the inclination angle to the management control module; the management control module is used for sending a dumping risk message to the battery control module if the inclination angle is detected to be larger than a first preset angle; wherein the first preset angle is greater than or equal to 65 degrees and less than or equal to 70 degrees; the battery control module is used for closing the power transmission function of the power battery by controlling the on-off state of the relay group; the relay group is respectively connected with the power battery, the charging execution module and the discharging execution module. According to the technical scheme, when the vehicle falls down in the parking and driving processes, the electric leakage protection of the power battery is realized, the personal safety of drivers and passengers is ensured, and the safety performance of the vehicle is greatly improved.

Description

Vehicle dumping protection system

Technical Field

The utility model relates to the technical field of vehicles, in particular to a vehicle dumping protection system.

Background

With the rapid development of the electric vehicle industry, two-wheel or three-wheel electric bicycles and four-wheel or four-wheel electric vehicles are also common vehicles in social life.

When the electric vehicle encounters road surface slipping or collision, the same dumping and side turning risks exist as those of the traditional vehicle, and compared with the traditional vehicle, the electric vehicle has the advantages that the electric vehicle needs to be used as a power source by the power battery, so that the electric vehicle can safely protect the power battery when the vehicle is dumped, and the electric vehicle also becomes an important component of the electric vehicle technology.

However, in the prior art, for the safety protection of the electric vehicle when the electric vehicle falls down, the electric vehicle is generally the same as a traditional vehicle, and only aims at protecting the physical structure of the vehicle, so that the damage to the structure of the power battery is reduced, and no corresponding electric leakage protection scheme exists, so that the personal safety of drivers and passengers cannot be effectively protected when the electric vehicle falls down and falls over in the process of parking and running.

Disclosure of Invention

The utility model provides a vehicle dumping protection system which aims to solve the problem that the power battery is at risk of electric leakage when a vehicle is dumped.

The utility model provides a vehicle dump protection system, comprising: the system comprises a gesture detection module, a management control module and a battery control module;

the gesture detection module is connected with the management control module and is used for acquiring the inclination angle of the target vehicle and sending the inclination angle to the management control module;

the management control module is connected with the battery control module and is used for sending a dumping risk message to the battery control module if the inclination angle is detected to be larger than a first preset angle; wherein the first preset angle is greater than or equal to 65 degrees and less than or equal to 70 degrees;

the battery control module is used for closing the power transmission function of the power battery by controlling the on-off state of the relay group according to the obtained dumping risk message; the relay group is respectively connected with the power battery, the charging execution module and the discharging execution module.

The relay group comprises a main negative relay, a main charging relay, a main discharging relay and a pre-charging relay;

the main negative relay is respectively connected with the charging execution module, the discharging execution module and the negative electrode of the power battery and is used for controlling the on-off state of a negative electrode transmission circuit;

the main charging relay is respectively connected with the charging execution module and the positive electrode of the power battery and is used for controlling the on-off state of the charging transmission circuit;

the main discharging relay is respectively connected with the discharging execution module and the positive electrode of the power battery and is used for controlling the on-off state of the discharging transmission circuit;

and the pre-charging relay is connected with the positive electrode of the power battery and is connected with the discharging execution module through a pre-charging resistor and used for controlling the on-off state of the pre-charging transmission circuit.

The vehicle dump protection system further comprises a motor control module;

the motor control module is connected with the management control module and the motor, and is used for closing the power transmission function of the motor according to the dumping risk message sent by the management control module and setting the working gear of the target vehicle as a stop gear when the target vehicle stops moving.

The vehicle dumping protection system further comprises a vehicle body control module;

the vehicle body control module is connected with the management control module and is used for sending out voice prompts through the buzzer and flashing prompts through the steering lamps according to the dumping risk message sent out by the management control module.

The vehicle dump protection system further comprises a wireless communication module;

the management control module is connected with the wireless communication module and is used for sending a dumping risk message to the battery control module, and if the detected vehicle speed is less than or equal to a first preset speed, a dumping prompt message is sent to a home user of the target vehicle through the wireless communication module; and if the detected speed is greater than the first preset speed, sending a safety prompt message to a background server through the wireless communication module so as to send a safety alarm to a standby contact matched with the home subscriber through the background server.

The management control module is further configured to wait for the power battery to complete self-checking start if the inclination angle is detected to be less than or equal to a second preset angle after sending the dumping risk message to the battery control module, and send an energizing start message to the battery control module if the power battery is detected to complete self-checking start;

and the battery control module is used for starting the power transmission function of the power battery by controlling the on-off state of the relay group according to the acquired power-on start message sent by the management control module.

The vehicle dump protection system further includes: a power supply battery and an insulation detection module; the power supply battery is connected with the battery control module and is used for supplying power to the battery control module; the negative electrode of the power supply battery is connected with at least one metal detection point on the frame; one end of the insulation detection module is connected with the positive electrode of the power supply battery, and the other end of the insulation detection module is respectively connected with the positive electrode and the negative electrode of the power battery;

the management control module is connected with the insulation detection module and is used for sending a collision risk message to the insulation detection module if the inclination angle is detected to be larger than or equal to a third preset angle and smaller than or equal to the first preset angle;

the insulation detection module is used for acquiring an insulation resistance value between the anode and the cathode of the power battery according to the acquired collision risk message, and controlling the on-off state of the relay group through the management control module and the battery control module when the insulation resistance value is smaller than or equal to a first preset resistance value so as to close the power transmission function of the power battery.

The metal detection points comprise power battery shell points, motor control module shell points, charging execution module shell points, low-voltage wire harness lap points, high-voltage wire harness lap points, direct-current converter shell points, vehicle-mounted charger shell points and motor shell points.

The second preset angle is greater than or equal to 20 degrees and less than or equal to 30 degrees.

The third preset angle is greater than or equal to 45 degrees.

According to the technical scheme, the gesture detection module acquires the inclination angle of the target vehicle and sends the inclination angle to the management control module, when the management control module detects that the inclination angle is larger than a first preset angle, the management control module sends a dumping risk message to the battery control module, and the battery control module closes the power transmission function of the power battery by controlling the on-off state of the relay group according to the acquired dumping risk message, so that when the vehicle is dumped in the parking and driving processes, the electric leakage protection of the power battery is realized, the personal safety of drivers and passengers is ensured, and the safety performance of the vehicle is greatly improved.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1A is a block diagram of a vehicle dump protection system according to one embodiment of the present utility model;

FIG. 1B is a block diagram of another vehicle dump protection system according to one embodiment of the present utility model;

fig. 1C is a schematic structural diagram of a relay unit according to a first embodiment of the present utility model;

FIG. 2A is a block diagram of yet another vehicle dump protection system according to a second aspect of the present utility model;

fig. 2B is a schematic diagram of a position of a metal detection point according to a second embodiment of the present utility model.

Detailed Description

In order that the manner in which the utility model may be better understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise 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.

Example 1

Fig. 1A is a block diagram of a vehicle dump protection system according to an embodiment of the present utility model, the system includes: the gesture detection module 100, the management control module 200, and the battery control module 300.

The gesture detection module 100 is connected to the management control module 200, and is configured to obtain an inclination angle of the target vehicle, and send the inclination angle to the management control module 200. The gesture detection module 100 is located at a middle position inside the vehicle instrument desk and can comprise functional elements such as a gyroscope and/or an angular acceleration sensor; the gyroscope can comprise an MPU-6050 gyroscope, and has the characteristic of high detection precision; the posture detection module 100 takes the upright state of the vehicle as an initial zero position, and when the vehicle is toppled over in the left-right direction, it acquires the inclination angle of the vehicle by detecting the angular velocity or the angular acceleration of the inclination angle of the vehicle, and then transmits the inclination angle to the management control module 200.

The management control module 200 is connected to the battery control module 300, and is configured to send a dumping risk message to the battery control module 300 if the inclination angle is detected to be greater than a first preset angle. When the vehicle is running normally, particularly when the vehicle encounters a specific road condition such as a turn, the vehicle body is inclined in a smaller range, and under a smaller inclination angle, even if the vehicle is inclined, turned over and the like, a driver can correct the vehicle body posture through driving operation, so that the first preset angle can be set to be a larger value, namely, the first preset angle is more than or equal to 65 degrees and less than or equal to 70 degrees, so that the battery control module 300 is prevented from executing a false power-off operation aiming at the smaller inclination angle; the management control module 200 sends a dumping risk message to the battery control module 300 when determining that the acquired inclination angles (for example, 3 consecutive data frames) in the consecutive data frames are equal to or greater than a first preset angle.

In particular, the first preset angles corresponding to different types of vehicles are often different; taking two-wheel electric bicycles as an example, when the weight of the vehicle body is light, a driver can control the vehicle more easily in the driving process, even if a larger inclination angle appears, the control of the vehicle can be ensured, and at the moment, the management control module 200 can set the first preset angle to be a larger value; however, when the vehicle body is heavy, the driver cannot easily control the vehicle during driving, and even if a small range of inclination angle occurs, it is difficult to ensure timely control of the vehicle, and at this time, the management control module 200 may set the first preset angle to a small value.

Meanwhile, the running speed of the vehicle also affects the setting of the first preset angle, and for the same vehicle, when the vehicle speed is high, the driver cannot easily correct the inclination angle of the vehicle body in time, and at this time, the management control module 200 can set the first preset angle to a smaller value; when the vehicle speed is slow, the management control module 200 may set the first preset angle to a larger value. In addition, the driving habits and the driving proficiency of each driver are also different, so the management control module 200 may also set a matched first preset angle for the current vehicle according to the historical driving record of the current vehicle; for example, if there is driving data corrected from a large inclination angle to a normal inclination angle by driving manipulation in the history of driving, the first preset angle of the current vehicle is set to a large value; if there is no driving data corrected from a large inclination angle to a normal inclination angle by driving manipulation in the history of driving, the first preset angle of the current vehicle is set to a small value.

The battery control module 300 is configured to close the power transmission function of the power battery 500 by controlling the on-off state of the relay set 400 according to the obtained dumping risk message; the relay group 400 is connected to the power battery 500, the charge execution module 600, and the discharge execution module 700, respectively. The power battery 500 is an electric power source when the vehicle is running, and is a high-voltage battery module composed of a plurality of batteries, for example, it includes a battery module composed of 100 cells 3.2V20AH connected in series; the discharge execution module 700 is a functional module between the power battery 500 and a controller of the motor, and is used for transmitting the electric energy output by the power battery 500 to the controller of the motor, and the controller converts the electric energy into three-phase electricity to drive the motor; the charging execution module 600 is configured to transmit electric energy input from the outside to the power battery 500, so as to realize electric energy storage; each relay in the relay group 400 is located between the power battery 500 and the charge execution module 600, and between the power battery 500 and the discharge execution module 700, for controlling the on-off state of each power transmission line. When the battery control module 300 obtains the dumping risk message, each relay in the relay set 400 is set to be in an open state, so that it is ensured that the power battery 500 cannot output electric energy to the outside, and cannot obtain external input electric energy.

Optionally, in the present utility model, the management control module 200 is further configured to, after sending the dumping risk message to the battery control module 300, wait for the power battery 500 to complete the self-checking start if the tilting angle is detected to be less than or equal to the second preset angle, and send the power-on start message to the battery control module 300 if the power battery 500 is detected to complete the self-checking start; the battery control module 300 is configured to start the power transmission function of the power battery 500 by controlling the on-off state of the relay set 400 according to the acquired power-on start message sent by the management control module 200.

Specifically, when the vehicle is re-lifted after toppling over, the posture detection module 100 detects that the inclination angle of the vehicle is again equal to or smaller than the second preset angle; wherein the second preset angle is smaller than the first preset angle; the second preset angle may be set to 0 degrees; since the power battery 500 may be damaged after the vehicle is dumped, the power control module 200 may not immediately send an energizing start message to the battery control module 300, but keeps all the relays in the relay set 400 in the current state, i.e. in the off state, so as to keep the power transmission of the power battery 500 off through the relay set 400. When the power battery 500 completes self-checking and no abnormal phenomena such as electric leakage are confirmed, the management control module 200 sends an electrifying start message to the battery control module 300; when the battery control module 300 acquires the power-on start message, the power battery 500 is started to output power to the motor or the charging execution module 600 is started to input power to the power battery 500 by controlling the relevant relay in the relay group 400 to be in a channel state; the vehicle is guaranteed to be re-lifted after toppling, the power battery 500 continues to provide power output for the motor, or the charging execution module 600 continues to provide power input for the power battery 500, so that the convenience of vehicle driving and vehicle charging is improved, the power supply safety of the power battery 500 after collision is guaranteed, the safety of vehicle driving and vehicle charging is improved, and meanwhile, the phenomenon that a user is easy to fly due to mistakenly touching a handle bar in a state of immediately starting a power battery transmission function when the vehicle is lifted is avoided.

In particular, the second preset angle may be set to a larger value, for example, the second preset angle may be 20 degrees or more and 30 degrees or less, because after the vehicle is lifted, the user often looks at damages of various parts of the vehicle in a posture of holding the vehicle and tilting the vehicle, and especially looks at damages of the right side of the vehicle in a tilting manner after the vehicle is lifted from the left side of the vehicle body, so the second preset angle may be set to 20 degrees or more and 30 degrees or less to conform to a checking habit of the user looking at damages of the vehicle after the vehicle is lifted.

As shown in fig. 1B, optionally, in the present utility model, the vehicle dump protection system further includes a motor control module 800; the motor control module 800 is connected with the management control module 200 and the motor, and is used for turning off the power transmission function of the motor according to the dumping risk message sent by the management control module 200, and setting the working gear of the target vehicle to be a stop gear when the target vehicle stops moving. Specifically, when the management control module 200 detects that the inclination angle is greater than the first preset angle, the management control module also synchronously sends a dumping risk message to the motor management module; the motor management module closes the power output of the motor according to the dumping risk message sent by the management control module 200, so that the operation safety of the motor in the dumping process can be avoided, and the energy output of the motor can be saved; meanwhile, the working gear of the target vehicle is set to be a stop gear, so that the phenomenon of false start of the target vehicle is prevented.

Optionally, in the present utility model, the vehicle toppling protection system further includes a vehicle body control module 801; the vehicle body control module 801 is connected with the management control module 200, and is configured to send out a voice prompt through a buzzer and a flashing prompt through a turn signal according to the dumping risk message sent out by the management control module 200. Specifically, when detecting that the inclination angle is greater than the first preset angle, the management control module 200 further synchronously sends a dumping risk message to the vehicle body control module 801; the vehicle body control module 801 lights up a trouble light on the instrument desk based on the acquired dumping risk report Wen Dian, and sends out a voice prompt through a buzzer, and sends out a blinking prompt through a turn signal light to prompt pedestrians near the target vehicle to pay attention to traffic safety.

Optionally, in the present utility model, the vehicle dump protection system further includes a wireless communication module 802; the management control module 200 is connected to the wireless communication module 802, and is configured to send a dumping prompt message to a home user of the target vehicle through the wireless communication module 802 if the detected vehicle speed is less than or equal to a first preset speed after sending a dumping risk message to the battery control module 300; if the detected speed is greater than the first preset speed, a security prompt message is sent to the background server through the wireless communication module 802, so as to send a security alarm to the backup contact matched with the home subscriber through the background server.

Specifically, the first preset speed may be set to a value of 0, where the vehicle is in a stopped state, and the vehicle owner may not be near the vehicle, and the management control module 200 sends a dumping prompt message to the terminal device or the application program of the home subscriber through the wireless communication module 802, or sends a dumping prompt message to the home subscriber through the background server, so that the user can timely know the state information of the vehicle; the wireless communication module 802 may include an internet of things (Internet of Things, IOT) communication module; if the first preset speed is a smaller value than the value 0, the vehicle is in a low-speed driving state, personal injury to a driver is not caused even if the vehicle turns on one's side, and meanwhile, only a dumping prompt message is needed to be sent to a home user to serve as backup driving data.

When the vehicle speed is faster, i.e. greater than the first preset speed, the vehicle is in a high-speed running state, and the vehicle suddenly falls down at this time, so that personal injury to a driver is most likely to happen, and at this time, the management control module 200 sends a safety prompt message to a background server through the wireless communication module 802, and the background server sends a safety alarm to a standby contact matched with a home user, so that personal safety monitoring of the driver is realized when the vehicle falls down.

As shown in fig. 1C, alternatively, in the present utility model, the relay group 400 includes a main negative relay 401, a main charging relay 402, a main discharging relay 403, and a pre-charging relay 404; the main negative relay 401 is respectively connected with the negative electrodes of the charging execution module 600, the discharging execution module 700 and the power battery 500 and is used for controlling the on-off state of the negative electrode transmission circuit; the main charging relay 402 is respectively connected with the charging execution module 600 and the positive electrode of the power battery 500 and is used for controlling the on-off state of the charging transmission circuit; the main discharging relay 403 is respectively connected with the discharging execution module 700 and the positive electrode of the power battery 500 and is used for controlling the on-off state of the discharging transmission circuit; the pre-charge relay 404 is connected to the positive electrode of the power battery 500, and is connected to the discharge execution module 700 through the pre-charge resistor 405, and is used for controlling the on-off state of the pre-charge transmission circuit.

Specifically, the negative electrode transmission circuit includes a transmission circuit between the negative electrode of the power battery 500 and the charge execution module 600, and a transmission circuit between the negative electrode of the power battery 500 and the discharge execution module 700; the charging transmission circuit comprises a transmission circuit between the positive electrode of the power battery 500 and the charging execution module 600; the discharge transmission circuit comprises a transmission circuit between the positive electrode of the power battery 500 and the discharge execution module 700; the pre-charge transmission circuit is also a transmission circuit between the positive electrode of the power battery 500 and the discharge execution module 700; the power supply battery 803 is used for a low voltage battery module for supplying power to the battery control module 300, and for example, the power supply parameter thereof may be 12V5AH.

During the running process of the target vehicle, the power battery 500 is in a high-voltage state, the main discharging relay 403 and the main negative relay 401 are in a closed state, and the main charging relay 402 and the pre-charging relay 404 are in an open state; when the battery control module 300 acquires the inclination risk message, the main discharging relay 403 and the main negative relay 401 are immediately disconnected, and at the moment, each relay in the relay group 400 is in a disconnected state, so that the electric energy output of the power battery 500 in the toppling state of the vehicle is avoided; meanwhile, when the target vehicle performs a charging operation in a static state, the main charging relay 402 and the main negative relay 401 are in a closed state, and the main discharging relay 403 and the pre-charging relay 404 are in an open state; when the battery control module 300 acquires the tilting risk message, the main charging relay 402 and the main negative relay 401 are immediately disconnected, and at the moment, each relay in the relay group 400 is also in the disconnected state, so that the electric energy input of the power battery 500 in the tilting state of the vehicle is avoided.

When the target vehicle is raised and powered up again, the battery control module 300 first closes the precharge relay 404 and the main negative relay 401; however, the voltage difference between the pre-charging relay 404 and the power battery 500 is determined, and when the voltage difference is determined to satisfy the preset starting condition, for example, the voltage difference is smaller than or equal to the first preset difference value, the main discharging relay 403 is closed, and the pre-charging relay 404 is opened, so that the high-voltage power-on of the electric bicycle is completed, and meanwhile, the on-off control of the pre-charging relay 404 is performed, the impact of the instant current when the power battery 500 is turned on to the power transmission line and each functional element on the power transmission line is reduced, and the damage to the power transmission line and the elements caused by the excessive current is prevented.

Example two

Fig. 2A is a block diagram of a vehicle toppling protection system according to a second embodiment of the present utility model, where, as shown in fig. 2A, the vehicle toppling protection system further includes: a power supply battery 803 and an insulation detection module 804; a power supply battery 803 connected to the battery control module 300 for supplying power to the battery control module 300; the negative electrode of the power supply battery 803 is connected with at least one metal detection point on the frame; one end of the insulation detection module 804 is connected with the positive electrode of the power supply battery 803, and the other end of the insulation detection module 804 is respectively connected with the positive electrode and the negative electrode of the power battery 500;

the management control module 200 is connected with the insulation detection module 804, and is configured to send a collision risk message to the insulation detection module 804 if the inclination angle is detected to be greater than or equal to a third preset angle and less than or equal to the first preset angle; the insulation detection module 804 is configured to obtain an insulation resistance value between the positive electrode and the negative electrode of the power battery 500 according to the obtained collision risk message, and control, through the management control module 200 and the battery control module 300, the on-off state of the relay set 400 to close the power transmission function of the power battery 500 when determining that the insulation resistance value is less than or equal to a first preset resistance value.

Specifically, one or more metal points without paint spraying, namely metal detection points, are distributed on the shell of the target vehicle, and each metal detection point is distributed on each position of the frame, particularly on an element with characteristics of easy electricity leakage, easy electric conduction and the like; fig. 2B is a schematic diagram of the frame mechanism of the target vehicle, and the metal detection points may include a power battery housing point 901, a motor control module housing point 902, a charge execution module housing point 903, a low voltage harness lap joint 904, a high voltage harness lap joint 905, a dc converter housing point 906, an on-board charger housing point 907, and a motor housing point 908.

The negative electrode of the power supply battery 803 is connected with each metal detection point and the frame in series through connecting elements such as a high-voltage wire harness PE wire (protective earthing conductor) and a low-voltage wire harness, the positive electrode of the power supply battery 803 is connected with one end of the insulation detection module 804, the other end of the insulation detection module 804 is connected with the positive electrode and the negative electrode of the power battery 500 respectively, and the insulation detection module 804 can detect insulation resistance between the positive electrode and the negative electrode (namely, the high-voltage positive electrode and the negative electrode) of the power battery 500 and the power supply battery 803 (namely, the low-voltage negative electrode).

When the target vehicle collides, the collision strength may not be enough to dump the vehicle, that is, the inclination angle of the vehicle is greater than or equal to the third preset angle and less than or equal to the first preset angle, but the low collision strength may also cause the power battery 500 to generate a leakage phenomenon, so when the inclination angle of the vehicle is greater than or equal to the third preset angle and less than or equal to the first preset angle, the management control module 200 sends a collision detection message to the insulation detection module 804; the insulation detection module 804 obtains the insulation resistance value at the current time.

Under normal conditions, the value of the insulation resistance is a larger value, namely is larger than a first preset resistance value; the first preset resistance value may be 32000 ohms; when the insulation detection module 804 detects that the insulation resistance value at the current moment is smaller, the leakage phenomenon is indicated, and the smaller the resistance value is, the more serious the leakage phenomenon is indicated; at this time, the insulation detection module 804 sends the leakage detection result to the management control module 200, and the management control module 200 sends a collision risk message to the battery control module 300 based on the leakage detection result, and the battery control module 300 controls the on-off state of the relay set 400 to close the power transmission function of the power battery 500 based on the collision risk message.

In particular, the third preset angle may be set to a larger value, for example, the third preset angle may be 45 degrees or more and 65 degrees or less; when the vehicle encounters a collision, if the inclination angle is smaller than a third preset angle, the current collision strength is smaller, and the current collision strength is insufficient to cause the power battery 500 to leak electricity, and insulation detection is not required to be performed, so that the occurrence of redundant detection is avoided; if the inclination angle is greater than or equal to the third preset angle and less than or equal to the first preset angle, the current collision strength is larger, so that the power battery 500 may leak electricity, insulation detection is performed at this time, and whether to perform the power-off operation is determined according to the insulation detection result, that is, when the insulation detection result is that the electric leakage phenomenon exists, the power-off operation according to the technical scheme is performed; and when the insulation detection result shows that no leakage phenomenon exists, the passage state of the continuing device is continuously maintained.

According to the technical scheme, if the management control module detects that the inclination angle is larger than or equal to a third preset angle and smaller than or equal to the first preset angle, a collision risk message is sent to the insulation detection module; the insulation detection module acquires an insulation resistance value between the positive electrode and the negative electrode of the power battery, and controls the on-off state of the relay group through the management control module and the battery control module when the insulation resistance value is smaller than or equal to a first preset resistance value so as to close the power transmission function of the power battery; therefore, when the vehicle collides, but the vehicle is insufficient to fall, the electric leakage detection can be realized through the insulation resistance value, so that the electric leakage detection of the power battery can be realized, the power battery can be ensured to continuously execute the original charge and discharge operation when the vehicle is not in electric leakage, and the electric energy transmission efficiency of the power battery is improved.

Claims

1. A vehicle rollover protection system, comprising: the system comprises a gesture detection module, a management control module and a battery control module;

2. The vehicle dump protection system of claim 1, wherein the relay group comprises a main negative relay, a main charging relay, a main discharging relay, and a pre-charging relay;

3. The vehicle dump protection system of claim 1, further comprising a motor control module;

4. The vehicle dump protection system of claim 1, further comprising a body control module;

5. The vehicle dump protection system of claim 1, further comprising a wireless communication module;

6. The vehicle dump protection system according to claim 1, wherein the management control module is further configured to, after sending a dump risk message to the battery control module, wait for the power battery to complete a self-test start if the tilt angle is detected to be equal to or smaller than a second preset angle, and send an energization start message to the battery control module if the power battery is detected to complete the self-test start;

7. The vehicle dump protection system according to claim 1, characterized in that the vehicle dump protection system further comprises: a power supply battery and an insulation detection module; the power supply battery is connected with the battery control module and is used for supplying power to the battery control module; the negative electrode of the power supply battery is connected with at least one metal detection point on the frame; one end of the insulation detection module is connected with the positive electrode of the power supply battery, and the other end of the insulation detection module is respectively connected with the positive electrode and the negative electrode of the power battery;

8. The vehicle dump protection system of claim 7, wherein the metal detection points include a power battery housing point, a motor control module housing point, a charge execution module housing point, a low voltage harness lap joint, a high voltage harness lap joint, a dc converter housing point, a vehicle-mounted charger housing point, and a motor housing point.

9. The vehicle dump protection system according to claim 6, wherein the second preset angle is 20 degrees or more and 30 degrees or less.

10. The vehicle dump protection system according to claim 7, wherein the third preset angle is 45 degrees or more and less than 65 degrees.