Vehicle power supply system, vehicle power supply method and vehicle

Abstract

This application discloses a vehicle power supply system, a vehicle power supply method, and a vehicle, belonging to the field of vehicle technology. The vehicle power supply system includes: a collision detection module, a battery detection module, a battery control module, a battery module, and a power consumption module. The collision detection module is configured to send a collision signal to the battery control module after detecting a vehicle collision. The battery detection module is configured to send a first battery abnormality signal to the battery control module after detecting that the battery module is in a first abnormal state. The battery control module is configured to, upon receiving the first battery abnormality signal, send a power-off signal to the battery module if no collision signal is received, and send a power supply signal to the battery module if a collision signal is received. The battery module is configured to, in response to the power supply signal, supply power to the power consumption module, or, in response to the power-off signal, stop supplying power to the power consumption module. This application can improve vehicle safety.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a vehicle power supply system, a vehicle power supply method, and a vehicle. Background Technology

[0002] Currently, vehicle power supply systems typically include a battery detection module, a battery control module, a battery module, and a power consumption module. When the battery detection module detects an abnormal state in the battery module (such as overvoltage, undervoltage, overtemperature, or overcurrent), it sends a battery abnormality signal to the battery control module.

[0003] In related technologies, the battery control module is configured to send a power-off signal to the battery module upon receiving a battery abnormality signal. The battery module is then configured to stop supplying power to the power-consuming module in response to the power-off signal. This is to prevent damage to the battery module.

[0004] However, in the event of a vehicle collision and the battery module is in an abnormal state, if the battery module stops supplying power to the power-consuming modules in response to a power outage signal, it can cause problems such as the doors being unable to unlock and the vehicle's hazard warning lights failing to turn on, thereby aggravating the consequences of the accident and resulting in lower vehicle safety. Summary of the Invention

[0005] This application provides a vehicle power supply system, a vehicle power supply method, and a vehicle. The technical solution is as follows:

[0006] On the one hand, a vehicle power supply system is provided, which includes: a collision detection module, a battery detection module, a battery control module, a battery module, and a power consumption module;

[0007] The collision detection module is configured to: detect whether a vehicle collision has occurred, and send a collision signal to the battery control module after detecting a collision; the battery detection module is configured to: detect the state of the battery module, and send a first battery abnormality signal to the battery control module after detecting that the battery module is in a first abnormal state; the battery control module is configured to: upon receiving the first battery abnormality signal, send a power-off signal to the battery module if the collision signal is not received, and send a power-on signal to the battery module if the collision signal is received; the battery module is configured to: supply power to the power-consuming module in response to the power-on signal, or stop supplying power to the power-consuming module in response to the power-off signal.

[0008] Optionally, the battery detection module is further configured to: send a second battery abnormality signal to the battery control module after detecting that the battery module is in a second abnormal state; the battery control module is further configured to: send the power-off signal to the battery module if it receives the second battery abnormality signal after receiving the collision signal.

[0009] Optionally, the second abnormal state includes: the power supply current from the battery module to the power consumption module is greater than or equal to 650 amps and the duration is greater than or equal to 3.1 seconds; and / or, the power supply current from the battery module to the power consumption module is greater than or equal to 400 amps and the duration is greater than or equal to 5.1 seconds.

[0010] Optionally, the battery detection module includes: a current detection module, a voltage detection module, and a temperature detection module; the current detection module is configured to detect the supply current of the battery module to the power consumption module; the voltage detection module is configured to detect the supply voltage of the battery module to the power consumption module; and the temperature detection module is configured to detect the temperature of the battery module.

[0011] Optionally, the collision detection module includes a collision sensor and an airbag module; the collision sensor is configured to detect whether a collision has occurred, and after detecting a collision, send a collision intensity signal to the airbag module; the airbag module is configured to compare the collision intensity signal with a target collision intensity signal, and if the collision intensity signal is greater than or equal to the target collision intensity signal, send the collision signal to the battery control module and deploy the airbag.

[0012] Optionally, the vehicle power supply system further includes: a first communication signal processor; the collision detection module is further configured to: detect whether a collision has occurred, and after detecting that a collision has occurred, send a collision signal to the first communication signal processor; the first communication signal processor is configured to: send a control signal to the power consumption module in response to the collision signal.

[0013] Optionally, the power module includes a door module and a light module, and the control signal includes a first sub-control signal and a second sub-control signal; the door module includes a first controller configured to control the door to unlock in response to the first sub-control signal; the light module includes a second controller configured to control the hazard warning flasher to illuminate in response to the second sub-control signal.

[0014] On the other hand, a vehicle power supply method is provided, applied to a vehicle power supply system. The vehicle power supply system includes: a collision detection module, a battery detection module, a battery control module, a battery module, a power consumption module, and a communication signal processor. The vehicle power supply method includes: after detecting a vehicle collision, the collision detection module sends a collision signal to the battery control module; when the battery detection module detects that the battery module is in a first abnormal state, the battery detection module sends a first battery abnormality signal to the battery control module; in response to the collision signal and the first battery abnormality signal, the battery control module sends a power supply signal or a power-off signal to the battery module; wherein, if the collision signal is not received when the first battery abnormality signal is received, the battery control module sends the power-off signal to the battery module; if the collision signal is received, the battery control module sends the power supply signal to the battery module.

[0015] Optionally, the vehicle power supply method further includes: when the battery detection module detects that the battery module is in a second abnormal state, the battery control module sends a second battery abnormal signal to the battery control module; after receiving the collision signal, in response to the second battery abnormal signal, the battery control module sends a power-off signal to the battery module.

[0016] In another aspect, a vehicle is provided, the vehicle including any of the aforementioned vehicle power supply systems.

[0017] The beneficial effects of the technical solution provided in this application include at least the following: by setting the battery control module to send a power-off signal to the battery module if it receives a first battery abnormality signal but does not receive a collision signal, and to send a power supply signal to the battery module if it receives a collision signal. Thus, in the absence of a collision, the battery module can stop supplying power to the power-consuming module when it detects that the battery module is in a first abnormal state, thereby protecting the battery module; and in the event of a collision, even if the battery module is in a first abnormal state, it will still supply power to the power-consuming module, thereby improving vehicle safety. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a vehicle power supply system provided in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of another vehicle power supply system provided in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the process by which a battery control module sends a power supply signal or a power off signal based on a collision signal, a first battery abnormality signal, and a second battery abnormality signal, according to an embodiment of this application.

[0022] Figure 4 This is a schematic diagram of a battery control module that sends a power supply signal or a power off signal based on a collision signal, a first battery abnormality signal, and a third battery abnormality signal, according to an embodiment of this application.

[0023] Figure 5 This is a schematic diagram of a battery control module that sends a power supply signal or a power off signal based on a collision signal, a first battery abnormality signal, a second battery abnormality signal, and a third battery abnormality signal, according to an embodiment of this application.

[0024] Figure 6 This is a schematic diagram of a battery detection module 2 provided in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram illustrating the connection between a battery module and a battery control module according to an embodiment of this application;

[0026] Figure 8 This is a schematic diagram of another vehicle power supply system provided in an embodiment of this application;

[0027] Figure 9 This is a schematic flowchart of a vehicle power supply method provided in an embodiment of this application. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0029] In related technologies, a vehicle power supply system includes a battery detection module, a battery control module, a battery module, and a power consumption module. When the battery detection module detects an abnormal state in the battery module (e.g., overvoltage, undervoltage, overtemperature, overcurrent, etc.), it sends a battery abnormality signal to the battery control module. The battery control module is configured to send a power-off signal to the battery module upon receiving the battery abnormality signal. The battery module is configured to stop supplying power to the power consumption module in response to the power-off signal. This is to prevent damage to the battery module.

[0030] However, if a vehicle is involved in a collision and the battery module is in an abnormal state due to the collision or other factors, and the battery module stops supplying power to the power-consuming module in response to the power failure signal, it will cause problems such as the doors not unlocking and the vehicle's hazard warning lights not turning on. This will affect rescue efforts, worsen the consequences of the accident, and result in lower vehicle safety.

[0031] Therefore, this application provides a vehicle power supply system to solve the above-mentioned problems.

[0032] Figure 1 This is a schematic diagram of a vehicle power supply system provided in an embodiment of this application. Figure 1 As shown, the vehicle power supply system includes: collision detection module 1, battery detection module 2, battery control module 3, battery module 4, and power consumption module 5.

[0033] For example, such as Figure 1 As shown, collision detection module 1 is connected to battery control module 3, battery detection module 2 is connected to battery control module 3, battery control module 3 is connected to battery module 4, and battery module 4 is connected to power consumption module 5. Here, the connection can be wired or wireless.

[0034] The collision detection module 1 is configured to detect whether a vehicle collision has occurred, and to send a collision signal to the battery control module 3 after a collision is detected.

[0035] The battery detection module 2 is configured to detect the status of the battery module 4 and send a first battery abnormality signal to the battery control module 3 after detecting that the battery module 4 is in a first abnormal state.

[0036] For example, the first abnormal state includes abnormalities such as overvoltage, undervoltage, overcurrent, and overtemperature.

[0037] For example, overcurrent includes: the supply current from battery module 4 to power module 5 is greater than or equal to 650 amps, and the duration is greater than or equal to 0.1 seconds; and / or, the supply current from battery module 4 to power module 5 is greater than or equal to 400 amps, and the duration is greater than or equal to 2 seconds; and / or, the supply current from battery module 4 to power module 5 is greater than or equal to 300 amps, and the duration is greater than or equal to 5 seconds; and / or, the supply current from battery module 4 to power module 5 is greater than or equal to 200 amps, and the duration is greater than or equal to 20 seconds. If the duration is too long, battery module 4 may be damaged due to excessive current, excessive temperature, or other factors.

[0038] For example, overheating includes: the temperature of battery module 4 being greater than or equal to 95 degrees Celsius, and the duration being greater than or equal to 3 seconds.

[0039] For example, overvoltage includes: the supply voltage of the battery module 4 to the power consumption module 5 is greater than or equal to 15 volts and the duration is greater than or equal to 2 seconds; and / or, the supply voltage of the battery module 4 to the power consumption module 5 is greater than or equal to 15.4 volts and the duration is greater than or equal to 0.5 seconds.

[0040] For example, undervoltage includes: the supply voltage of the battery module 4 to the power consumption module 5 is less than or equal to 8.5 volts, and the duration is greater than or equal to 2 seconds.

[0041] The battery control module 3 is configured to: upon receiving a first battery abnormality signal, if no collision signal is received, send a power-off signal to the battery module 4; if a collision signal is received, send a power-on signal to the battery module 4.

[0042] Battery module 4 is configured to supply power to power module 5 in response to a power supply signal, or to stop supplying power to power module 5 in response to a power outage signal.

[0043] For example, the power module 5 includes a door module and a lamp module.

[0044] During normal vehicle use, i.e. when the vehicle is not in a collision, if the battery module 4 is in the first abnormal state, the battery control module 3 sends a power-off signal to the battery module 4 to protect the battery module 4 and prevent damage to the battery module 4.

[0045] After a vehicle collision, battery module 4 may be damaged and enter a first abnormal state. For occupants, the danger level of the vehicle collision is greater than the danger level of battery module 4 being in the first abnormal state. In this situation, if battery control module 3 still sends a power-off signal to battery module 4 based on the first battery abnormality signal, it may result in problems such as the doors being unable to unlock and the hazard warning lights not activating after the collision. This would prevent the doors from opening and fail to alert people outside the vehicle, thus worsening the consequences of the accident. For example, it may prevent rescue of occupants, leading to lower vehicle safety.

[0046] In this embodiment, after the battery control module 3 receives a first battery abnormality signal, if a collision signal is received, it sends a power supply signal to the battery module 4. This ensures that even if the battery module 4 is in a first abnormal state, power is preferentially supplied to the power consumption module 5, thereby improving vehicle safety. For example, after a collision, the doors can be unlocked to facilitate rescue personnel to assist the occupants, and the vehicle's hazard warning lights can be activated to alert people outside the vehicle, such as vehicles behind, to avoid secondary collisions and thus prevent aggravating the accident consequences.

[0047] In summary, the vehicle power supply system provided in this application includes a collision detection module, a battery detection module, a battery control module, a battery module, and a power consumption module. By configuring the battery control module to send a power-off signal to the battery module if it receives a first battery abnormality signal but does not receive a collision signal, and a power supply signal to the battery module if it receives a collision signal, the system can protect the battery module by stopping power supply to the power consumption module when the battery module is detected to be in a first abnormal state, even if the battery module is in a first abnormal state, even if the vehicle is involved in a collision. Furthermore, in the event of a collision, the battery module can continue to supply power to the power consumption module even if it is in a first abnormal state, thereby improving vehicle safety.

[0048] Figure 2 This is a schematic diagram of another vehicle power supply system provided in an embodiment of this application. For example... Figure 2 As shown, the vehicle power supply system also includes: a first communication signal processor 6.

[0049] The collision detection module 1 is also configured to detect whether a vehicle collision has occurred, and after detecting a collision, to send a collision signal to the first communication signal processor 6. That is, after detecting a collision, the collision detection module 1 sends a collision signal not only to the battery control module 3, but also to the communication signal processor 6.

[0050] The first communication signal processor 6 is configured to send a control signal to the power module 5, for example, to the door module, in response to a collision signal. This allows the vehicle to automatically take emergency measures after a collision, preventing the consequences of a collision from worsening due to delayed reactions from occupants, thereby further improving vehicle safety.

[0051] For example, in the event of a vehicle collision and when battery module 4 is in a first battery abnormal state (e.g., overcurrent), it can prevent the battery module 4 from remaining in the first battery abnormal state for an extended period due to the long reaction time of the occupants. This would prevent the wiring harness supplying power to the power module 5 from burning out (i.e., stopping power supply), thus preventing the occupants from unlocking the car door after they have reacted and attempted to do so, as the power supply has already stopped.

[0052] For example, the control signal includes a first sub-control signal and a second sub-control signal.

[0053] The door module includes a first controller configured to control the door to unlock in response to a first sub-control signal. Specifically, a first communication signal processor 6 receives a collision signal and sends the first sub-control signal to the door module; in response to the first sub-control signal, the door module can control the door to unlock. This allows the vehicle to automatically attempt to unlock the doors after a collision, saving time and improving vehicle safety.

[0054] For example, after receiving the first sub-control signal, the first controller controls the door to unlock multiple times, thereby ensuring that the door can be unlocked as quickly as possible after a vehicle collision. Optionally, after receiving the first sub-control signal, the first controller controls the door to unlock three times.

[0055] The light module includes a second controller configured to activate the hazard warning lights in response to a second sub-control signal. This allows the vehicle to automatically activate the hazard warning lights after a collision, instead of requiring manual activation by the driver and passengers. This helps to quickly alert other people outside the vehicle, such as those approaching from behind, preventing secondary accidents and improving vehicle safety.

[0056] In one possible embodiment, see again Figure 2 The battery detection module 2 is further configured to send a second battery abnormality signal to the battery control module 3 after detecting that the battery module 4 is in a second abnormal state. The battery control module 3 is further configured to send a power-off signal to the battery module 4 if it receives the second battery abnormality signal after receiving a collision signal.

[0057] The danger level of battery module 4 being in the second abnormal state is greater than the danger level of a vehicle collision. For example, if battery module 4 is in an overcurrent state for too long, that is, if the supply current from battery module 4 to power module 5 is too high for an extended period, it may lead to wiring corrosion or even battery module 4 catching fire, thus threatening the safety of the occupants. In other words, for the occupants, the danger level of battery module 4 catching fire is greater than the danger level of a vehicle collision.

[0058] Therefore, by configuring the battery control module 3 to send a power-off signal to the battery module 4 if it receives a second battery abnormality signal after receiving a collision signal, a greater threat to the lives of the occupants can be avoided, thereby further improving vehicle safety.

[0059] For example, the second abnormal state includes: the supply current of the battery module 4 to the power consumption module 5 is greater than or equal to 650 amps and the duration is greater than or equal to 3.1 seconds; and / or, the supply current of the battery module 4 to the power consumption module 5 is greater than or equal to 400 amps and the duration is greater than or equal to 5.1 seconds.

[0060] In the second abnormal state, the battery module 4 supplies power to the power module 5 with a current greater than or equal to 650 amps for a duration greater than or equal to 3.1 seconds. The duration is set to greater than or equal to 3.1 seconds because the collision detection module 1 sends a collision signal to the communication signal processor 6, and subsequently, the communication signal processor 6 sends the first sub-control signal to the door module in the power module 5 within approximately 0.1 seconds. After receiving the first sub-control signal, the first controller controls the door to unlock three times, with each unlocking attempt lasting approximately one second. Therefore, setting the duration to greater than or equal to 3.1 seconds ensures that the first controller receives the first sub-control signal and can control the door to unlock multiple times. This increases the likelihood of successful door unlocking after a vehicle collision.

[0061] Here, the 3.1-second time period can also be referred to as the emergency response time, and the specific duration of the emergency response time can be adjusted according to different vehicle designs. This application embodiment does not impose any limitation on the specific duration of the emergency response time.

[0062] The reason for setting the duration greater than 3.1 seconds in the second abnormal state, "the supply current of battery module 4 to power module 5 is greater than or equal to 400 amps and the duration is greater than or equal to 5.1 seconds," has been explained previously and will not be repeated here. Setting the duration to 5.1 seconds allows sufficient time for the first controller to receive the first sub-control signal and to control the door unlocking multiple times, while minimizing the possibility of damage to battery module 4, thus increasing the probability of successful door unlocking.

[0063] Optionally, the second abnormal state may also include: the power supply current from the battery module 4 to the power consumption module 5 is greater than or equal to 400 amps, and the duration is greater than or equal to 3.1 seconds.

[0064] Figure 3 This is a schematic diagram illustrating the process by which a battery control module, according to an embodiment of this application, sends a power supply signal or a power-off signal based on a collision signal, a first battery abnormality signal, and a second battery abnormality signal. The aforementioned battery control module 3's judgment process for issuing a power supply signal or a power-off signal based on the collision signal sent by the collision detection module 1 and the first and second battery abnormality signals sent by the battery detection module 2 is as follows: Figure 3 As shown.

[0065] like Figure 3 As shown, when the battery control module 3 receives a collision signal, it blocks the first battery abnormality signal and sends a power supply signal. That is, when the battery control module 3 receives a collision signal, it sends a power supply signal regardless of whether it receives the first battery abnormality signal, in order to improve the safety of the vehicle.

[0066] After sending a power supply signal upon receiving a collision signal, if no second battery abnormality signal is received, a power supply signal is sent until the battery module is depleted or damaged, thereby extending the power supply time as much as possible; if a second battery abnormality signal is received, a power-off signal is sent to avoid posing a greater threat to the lives of the occupants (such as battery module 4 catching fire), thereby further improving the safety of the vehicle.

[0067] If the battery control module 3 does not receive a collision signal, but receives a first battery abnormality signal, it will send a power-off signal to protect the battery module 4; if the battery control module 3 does not receive the first battery abnormality signal, it will send a power supply signal normally and continue to execute the above judgment process.

[0068] In another possible embodiment, see again Figure 2 The battery detection module 2 is also configured to send a third battery abnormality signal to the battery control module 3 after detecting that the battery module 4 is in a third abnormal state.

[0069] Battery control module 3 is also configured as follows:

[0070] If no abnormal signal from the third battery is received after receiving a collision signal, a power supply signal is sent to battery module 4.

[0071] If a third battery abnormality signal is received after receiving a collision signal, and no first battery abnormality signal is received after receiving the third battery abnormality signal, a power supply signal is sent to battery module 4.

[0072] If a third battery abnormality signal is received after receiving a collision signal, and a first battery abnormality signal is received after receiving the third battery abnormality signal, a power-off signal is sent to battery module 4.

[0073] In actual use, the battery module 4 may be in a third abnormal state (e.g., overcurrent) due to damage immediately after a collision. However, after a period of time, such as 10 seconds, 60 seconds, or 30 minutes after the collision, the battery module 4 will disappear and return to normal.

[0074] Therefore, after receiving the collision signal and the third battery abnormality signal, the battery detection module 2 needs to combine the first battery abnormality signal to determine whether to send a power-off signal or a power-on signal, so that the battery module 4 can be used normally as soon as possible after the battery module 4 fault disappears.

[0075] For example, the duration of the third abnormal state is greater than 3.1 seconds, so that if a situation occurs where "after receiving a collision signal, if a third battery abnormal signal is received, and after receiving the third battery abnormal signal, a first battery abnormal signal is received, a power-off signal is sent to battery module 4", the emergency response time has already passed. That is, after the vehicle collision but before the battery control module 3 sends the power-off signal, as mentioned above, the first controller has already unlocked the doors multiple times, reducing the possibility of occupants being trapped inside the vehicle. Therefore, at this time, the battery control module 3 sending a power-off signal will not threaten the safety of occupants and can also protect battery module 4.

[0076] For example, the third abnormal state includes: the supply current of the battery module 4 to the power consumption module 5 is greater than or equal to 200 amps and the duration is greater than or equal to 10 seconds; and / or, the supply current of the battery module 4 to the power consumption module 5 is greater than or equal to 100 amps and the duration is greater than or equal to 60 seconds; and / or, the supply current of the battery module 4 to the power consumption module 5 is less than 100 amps and the duration is greater than or equal to 30 minutes.

[0077] Figure 4 This is a schematic diagram illustrating the process by which a battery control module, according to an embodiment of this application, sends a power supply signal or a power-off signal based on a collision signal, a first battery abnormality signal, and a third battery abnormality signal. The aforementioned battery control module 3's judgment process for issuing a power supply signal or a power-off signal based on the collision signal sent by the collision detection module 1 and the first and third battery abnormality signals sent by the battery detection module 2 is as follows: Figure 4 As shown.

[0078] like Figure 4 As shown, when the battery control module 3 receives a collision signal, it blocks the first battery abnormality signal and sends a power supply signal. That is, when the battery control module 3 receives a collision signal, it sends a power supply signal regardless of whether it receives the first battery abnormality signal, in order to improve the safety of the vehicle.

[0079] After sending a power supply signal due to receiving a collision signal, if no abnormal signal from the third battery is received, a power supply signal is sent again until the battery module is depleted or damaged, thereby extending the power supply time as much as possible.

[0080] After sending a power supply signal due to receiving a collision signal, if a third battery abnormality signal is received, and a first battery abnormality signal is received after the third battery abnormality signal, a power-off signal is sent to protect battery module 4.

[0081] After sending a power supply signal upon receiving a collision signal, if a third battery malfunction signal is received, and no first battery malfunction signal is received after the third battery malfunction signal, a power supply signal is sent again, and the above judgment process continues. This ensures that battery module 4 can be used normally as soon as possible after the malfunction disappears.

[0082] In this embodiment, not only can the battery control module 2 determine whether to send a power supply signal or a power-off signal by whether it receives a first battery abnormal signal after receiving a third battery signal, but it can also determine whether to send a power supply signal or a power-off signal by whether it receives a first battery abnormal signal after receiving a second battery signal.

[0083] Figure 5 This is a schematic diagram illustrating the process by which a battery control module, according to an embodiment of this application, sends a power supply signal or a power-off signal based on a collision signal, a first battery abnormality signal, a second battery abnormality signal, and a third battery abnormality signal. Figure 5 As shown.

[0084] When the battery control module 3 receives a collision signal, it blocks the first battery abnormality signal and sends a power supply signal. That is, when the battery control module 3 receives a collision signal, it sends a power supply signal regardless of whether it receives the first battery abnormality signal, in order to improve the safety of the vehicle.

[0085] After sending a power supply signal due to receiving a collision signal, if no second battery abnormality signal or a third battery abnormality signal is received (i.e., no second battery abnormality signal and no third battery abnormality signal are received), a power supply signal is sent until the battery module is depleted or damaged, thereby extending the power supply time as much as possible.

[0086] After sending a power supply signal due to receiving a collision signal, if a first battery abnormality signal or a third battery abnormality signal is received (i.e., one of the second battery abnormality signal and the third battery abnormality signal is received), and after receiving the first battery abnormality signal or the third battery abnormality signal, the first battery abnormality signal is received, then a power-off signal is sent to protect battery module 4.

[0087] After sending a power supply signal due to a collision signal, if a first battery abnormality signal or a third battery abnormality signal (i.e., one of a second battery abnormality signal or a third battery abnormality signal) is received, and after receiving the first battery abnormality signal or the third battery abnormality signal, no first battery abnormality signal is received, then a power supply signal is sent, and the above judgment process continues. This ensures that battery module 4 can be used normally as soon as possible after the fault disappears.

[0088] In this embodiment, the collision detection module includes a collision sensor and an airbag module.

[0089] The collision sensor is configured to detect whether a collision has occurred and, upon detecting a collision, send a collision intensity signal to the airbag module. The airbag module is configured to compare the collision intensity signal with a target collision intensity signal; if the collision intensity signal is greater than or equal to the target collision intensity signal, it sends a collision signal to the battery control module 3 and deploys the airbag.

[0090] In actual vehicle use, minor collisions may occur, such as a pedestrian colliding with a stationary but moving vehicle. If a minor collision causes the doors to unlock automatically, it not only goes against the wishes of the occupants but may also jeopardize their safety. Therefore, by having the airbag module compare the collision intensity signal detected by the collision sensor with the target collision intensity signal, the first communication signal processor 6 and the first controller will only initiate the automatic door unlocking operation in the event of a more severe collision that endangers the safety of the occupants. Simultaneously, the airbag module deploys the airbags while sending the collision signal, providing immediate protection for the occupants.

[0091] Figure 6 This is a schematic diagram of a battery detection module 2 provided in an embodiment of this application. For example, as shown... Figure 6 As shown, the battery detection module 2 includes a current detection module 21, a voltage detection module 22, and a temperature detection module 23. The current detection module is configured to detect the supply current from the battery module 4 to the power consumption module 5; the voltage detection module is configured to detect the supply voltage from the battery module 4 to the power consumption module 5; and the temperature detection module is configured to detect the temperature of the battery module 4. This allows for the detection of the state of the battery module 4 and the determination of whether the battery module 4 is in a first, second, or third abnormal state. Based on this, it determines whether to send a first, second, or third battery abnormal signal to the battery control module 3.

[0092] Figure 7This is a schematic diagram illustrating the connection between a battery module and a battery control module according to an embodiment of this application. Figure 7 As shown, battery module 4 includes a connected cell module 41 and a switch 42. Optionally, cell module 41 can be a lithium battery.

[0093] Battery control module 3 is connected to switch 42. If battery control module 3 sends a power supply signal to battery module 4, switch 42 can be closed to allow cell module 41 to supply power to power-consuming module 5. Figure 7 (Not shown in the image) Power supply; if the battery control module 3 sends a power-off signal to the battery module 4, the cell module 41 can stop supplying power to the power consumption module 5 by turning off the switch 42.

[0094] Optionally, such as Figure 7 As shown, switch 42 includes two metal-oxide-semiconductor field-effect transistors (MOSFETs). Among them, as... Figure 7 As shown, the two MOSFETs are the first MOSFET on the left and the second MOSFET on the right, respectively. The source of the first MOSFET is connected to the source of the second MOSFET. The diode in the first MOSFET is also called the first body diode, and the diode in the second MOSFET is also called the second body diode. Optionally, both the first MOSFET and the second MOSFET can be N-channel MOSFETs.

[0095] When the vehicle is started and no collision occurs, the source and drain of the first MOSFET are connected, and the source and drain of the second MOSFET are also connected, allowing the battery module 4 to freely switch between charging and discharging states. During discharging, current flows from the cell module 41 along the drain and source of the first MOSFET and the source and drain of the second MOSFET to the power consumption module, and also from the cell module along the drain and source of the first MOSFET and the second body diode to the power consumption module. During charging, current flows along the drain and source of the second MOSFET and the source and drain of the first MOSFET to the cell module 41, and also along the drain and source of the second MOSFET and the first body diode to the cell module 41.

[0096] Figure 8 This is a schematic diagram of another vehicle power supply system provided in an embodiment of this application. For example, as shown... Figure 8 As shown, voltage detection module 22 ( Figure 8(Not shown) may include an internal voltage detection circuit 221 and an external voltage detection circuit 222, so as to detect the voltage of the cell module 41 inside the battery module 4, or to detect the voltage outside the battery module 4 (i.e., the cell module 41 and the switch 42 as a whole).

[0097] For example, the current detection module 21 sets up a shunt 210, which can be approximated as a resistor with a small resistance value. By measuring the voltage on both sides of the shunt 210, the current detection module 21 can measure the magnitude of the power supply current from the battery module 4 to the power consumption module.

[0098] For example, the temperature detection module 23 includes a temperature sensor (not shown) disposed on the surface of the cell module 41 to measure the temperature of the cell module 41.

[0099] For example, such as Figure 8 As shown, the battery detection module 2 (including the current detection module 21, voltage detection module 22 and temperature detection module 23), the battery control module 3 and the switch 42 can be collectively referred to as the battery management system 7.

[0100] For example, the battery control module 3 also includes a second communication signal processor to receive collision signals.

[0101] For example, battery module 4 supplies power to different modules in power module 5 (such as the aforementioned door module and light module) through a fuse box. For example, battery module 4 is also connected to the airbag module in collision detection module 1 to supply power to the airbag module.

[0102] In summary, the vehicle power supply system provided in this application includes a collision detection module, a battery detection module, a battery control module, a battery module, and a power consumption module. By configuring the battery control module to send a power-off signal to the battery module if it receives a first battery abnormality signal but does not receive a collision signal, and a power supply signal to the battery module if it receives a collision signal, the system can protect the battery module by stopping power supply to the power consumption module when the battery module is detected to be in a first abnormal state, even if the battery module is in a first abnormal state, even if the vehicle is involved in a collision. Furthermore, in the event of a collision, the battery module can continue to supply power to the power consumption module even if it is in a first abnormal state, thereby improving vehicle safety.

[0103] This application also provides a vehicle power supply method, which is applied to any of the aforementioned vehicle power supply systems. Figure 9 This is a schematic flowchart of a vehicle power supply method provided in an embodiment of this application, as shown below. Figure 9 As shown, the vehicle power supply methods include:

[0104] Step 901: After detecting a collision, the collision detection module sends a collision signal to the battery control module.

[0105] Step 902: When the battery detection module detects that the battery module is in a first abnormal state, it sends a first battery abnormal signal to the battery control module.

[0106] Step 903: In response to the collision signal and the first battery abnormality signal, the battery control module sends a power supply signal or a power off signal to the battery module.

[0107] Specifically, if a first battery abnormality signal is received, and no collision signal is received, the battery control module sends a power-off signal to the battery module; if a collision signal is received, the battery control module sends a power-on signal to the battery module.

[0108] In summary, the vehicle power supply system used in the vehicle power supply method provided in this application includes a collision detection module, a battery detection module, a battery control module, a battery module, and a power consumption module. By configuring the battery control module to send a power-off signal to the battery module if it receives a first battery abnormality signal but does not receive a collision signal, and to send a power supply signal to the battery module if it receives a collision signal, the system can protect the battery module by stopping power supply to the power consumption module when the battery module is detected to be in a first abnormal state, even if the battery module is in a first abnormal state, even if the vehicle is involved in a collision. Furthermore, in the event of a collision, the battery module continues to supply power to the power consumption module even if it is in a first abnormal state, thereby improving vehicle safety.

[0109] For example, the vehicle power supply method further includes:

[0110] The first step is that when the battery detection module detects that the battery module is in a second abnormal state, it sends a second battery abnormality signal to the battery control module.

[0111] The danger level of a battery module in a second abnormal state is greater than the danger level of a vehicle collision. For example, if the battery module is in an overcurrent state for an extended period—meaning the battery module supplies excessively high current to the power modules for a prolonged period—it may lead to wiring corrosion or even a battery module fire, posing a threat to the safety of the occupants. In other words, for the occupants, the danger level of a battery module fire is greater than the danger level of a vehicle collision. Therefore, it is necessary to check whether the battery module is in a second abnormal state.

[0112] Step 2: Upon receiving the collision signal, in response to the second battery abnormality signal, the battery control module sends a power-off signal to the battery module.

[0113] By configuring the battery control module to send a power-off signal to the battery module if it receives a second battery malfunction signal after a collision, greater threats to the lives of passengers can be avoided, thereby further improving vehicle safety.

[0114] This application also provides a vehicle that includes any of the aforementioned vehicle power supply systems. This vehicle has the same effects as the aforementioned vehicle power supply systems, and will not be described in detail here.

[0115] It should be noted that the terminology used in the implementation section of the embodiments of this application is only for explaining the embodiments of this application and is not intended to limit the embodiments of this application. Unless otherwise defined, the technical or scientific terms used in the implementation of the embodiments of this application should have the ordinary meaning understood by a person skilled in the art to which the embodiments of this application pertain. The words "first," "second," "third," and similar terms used in the patent application specification and claims of the embodiments of this application do not indicate any order, quantity, or importance, but are only used to distinguish different components. Similarly, the words "a" or "an" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The words "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The directional terms mentioned in the embodiments of this application, such as "top", "bottom", "up", "down", "left" or "right", are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0116] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle power supply system, characterized in that, The vehicle power supply system includes: a collision detection module (1), a battery detection module (2), a battery control module (3), a battery module (4), and a power consumption module (5). The collision detection module (1) is configured to detect whether a collision has occurred and, after detecting that a collision has occurred, send a collision signal to the battery control module (3). The battery detection module (2) is configured to detect the state of the battery module (4) and, after detecting that the battery module (4) is in a first abnormal state, send a first battery abnormal signal to the battery control module (3). The battery control module (3) is configured to: if it receives the first battery abnormal signal, send a power-off signal to the battery module (4) if it does not receive the collision signal, and send a power-on signal to the battery module (4) if it receives the collision signal. The battery module (4) is configured to: supply power to the power consumption module (5) in response to the power supply signal, or stop supplying power to the power consumption module (5) in response to the power failure signal; The risk level of the vehicle collision is greater than the risk level of the battery module (4) being in the first abnormal state.

2. The vehicle power supply system according to claim 1, characterized in that, The battery detection module (2) is further configured to send a second battery abnormality signal to the battery control module (3) after detecting that the battery module (4) is in a second abnormal state. The battery control module (3) is also configured to: after receiving the collision signal, if the second battery abnormal signal is received, send the power-off signal to the battery module (4); Wherein, the danger level of the battery module (4) in the second abnormal state is greater than the danger level of the vehicle colliding.

3. The vehicle power supply system according to claim 2, characterized in that, The second abnormal state includes: The power supply current from the battery module (4) to the power consumption module (5) is greater than or equal to 650 amps, and the duration is greater than or equal to 3.1 seconds; And / or, the power supply current supplied by the battery module (4) to the power consumption module (5) is greater than or equal to 400 amps, and the duration is greater than or equal to 5.1 seconds.

4. The vehicle power supply system according to any one of claims 1 to 3, characterized in that, The battery detection module (2) includes: a current detection module (21), a voltage detection module (22), and a temperature detection module (23). The current detection module (21) is configured to detect the power supply current from the battery module (4) to the power consumption module (5); The voltage detection module (22) is configured to detect the supply voltage of the power supply from the battery module (4) to the power consumption module (5); The temperature detection module (23) is configured to detect the temperature of the battery module (4).

5. The vehicle power supply system according to any one of claims 1 to 3, characterized in that, The collision detection module (1) includes: a collision sensor and an airbag module; The collision sensor is configured to detect whether a collision has occurred and, upon detecting a collision, send a collision intensity signal to the airbag module. The airbag module is configured to: compare the collision intensity signal with the target collision intensity signal; if the collision intensity signal is greater than or equal to the target collision intensity signal, send the collision signal to the battery control module (3) and deploy the airbag.

6. The vehicle power supply system according to any one of claims 1 to 3, characterized in that, The vehicle power supply system also includes: a first communication signal processor (6); The collision detection module (1) is also configured to detect whether a vehicle has collided, and after detecting that the vehicle has collided, to send a collision signal to the first communication signal processor (6). The first communication signal processor (6) is configured to send a control signal to the power module (5) in response to the collision signal.

7. The vehicle power supply system according to claim 6, characterized in that, The power module (5) includes a door module and a lamp module, and the control signal includes a first sub-control signal and a second sub-control signal; The door module includes: a first controller, the first controller being configured to: control the door to unlock in response to the first sub-control signal; The light module includes a second controller configured to control a hazard alarm flasher to illuminate in response to a second sub-control signal.

8. A method for supplying power to a vehicle, characterized in that, This is applied to a vehicle power supply system, which includes: a collision detection module, a battery detection module, a battery control module, a battery module, a power consumption module, and a communication signal processor. The vehicle power supply method includes: After detecting a vehicle collision, the collision detection module sends a collision signal to the battery control module. When the battery detection module detects that the battery module is in a first abnormal state, it sends a first battery abnormal signal to the battery control module. In response to the collision signal and the first battery abnormality signal, the battery control module sends a power supply signal or a power off signal to the battery module. Specifically, if the battery control module receives the first battery abnormality signal but does not receive the collision signal, it sends the power-off signal to the battery module; if the collision signal is received, it sends the power-on signal to the battery module. The risk level of the vehicle colliding is greater than the risk level of the battery module being in the first abnormal state.

9. The vehicle power supply method according to claim 8, characterized in that, The vehicle power supply method also includes: When the battery detection module detects that the battery module is in a second abnormal state, it sends a second battery abnormal signal to the battery control module. Upon receiving the collision signal, in response to the second battery abnormality signal, the battery control module sends a power-off signal to the battery module; Wherein, the danger level of the battery module being in the second abnormal state is greater than the danger level of the vehicle colliding.

10. A vehicle, characterized in that, The vehicle includes a vehicle power supply system as described in any one of claims 1 to 7.

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