Vehicle power supply system, protection control method and vehicle

Abstract

The present application relates to a vehicle power supply system, a protection control method and a vehicle. The vehicle power supply system includes: multiple battery packs, each battery pack includes an energy storage device and a fuse protection device, a power supply circuit is formed between each energy storage device and the vehicle's electrical device, and the fuse protection device is provided in the power supply circuit, and the fuse protection device is used to cut off the corresponding power supply circuit; a first protection branch connection, the fuse protection device of each battery pack is provided in the corresponding first protection branch; a control module, used to obtain a fuse trigger signal, the fuse trigger signal includes a thermal safety signal of the battery pack, the control module is respectively communicated with the multiple battery packs and the first protection branch, and the control module is configured to control the conduction state of the corresponding first protection branch according to the fuse trigger signal to control the fusing state of the corresponding fuse protection device. The vehicle power supply system of the present invention is conducive to improving the safety of vehicle electricity use.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle power supply systems, and in particular to a vehicle power supply system, a protection control method, and a vehicle. Background Art

[0002] New energy vehicles are typically equipped with battery packs that provide power to drive electric motors and electronic control devices on new energy vehicles.

[0003] Due to the high energy density of battery packs, any electrical faults (such as short circuits, overcharging, or over-discharging) can lead to serious consequences, including battery damage or fire. Therefore, improving the safety and reliability of battery systems is key to ensuring the overall performance of the vehicle. Summary of the Invention

[0004] The present application provides a vehicle power supply system, a protection control method and a vehicle, which can monitor the operating status of the battery pack and cut off the power supply circuit of the battery pack when the operating status of the battery pack is abnormal, thereby improving the safety of the vehicle.

[0005] An embodiment of a first aspect of the present invention provides a vehicle power supply system, comprising:

[0006] A battery pack, wherein the battery packs are multiple, each of the battery packs includes an energy storage device and a fuse protection device, each of the energy storage devices is suitable for forming a power supply circuit with the vehicle's electrical device, and the fuse protection device is provided in the power supply circuit and is used to cut off the corresponding power supply circuit;

[0007] A first protection branch, wherein the fuse protection device of each battery pack is provided in the corresponding first protection branch;

[0008] A control module is used to obtain a fuse trigger signal, where the fuse trigger signal includes a thermal safety signal of the battery pack. The control module is respectively communicated with multiple battery packs and the first protection branch. The control module is configured to control the conduction state of the corresponding first protection branch according to the fuse trigger signal to control the fusing state of the corresponding fuse protection device.

[0009] The vehicle power supply system of the present invention supplies energy to the vehicle's electrical devices through a power supply circuit formed between the battery pack and the vehicle's electrical devices. The protective power source and the first protection branch form a protection circuit. When the control module receives a fuse trigger signal, the corresponding first protection branch conducts, causing the fuse protection device of the corresponding battery pack to disconnect the power supply circuit of the abnormal battery pack, thereby improving the safety of the battery pack.

[0010] In some embodiments, the fuse trigger signal further includes an input signal, and the control module is further configured to control the conduction state of all the first protection branches according to the conduction state of the received input signal.

[0011] In some embodiments, the fuse trigger signal further includes a vehicle safety signal, and the control module is further configured to control the conduction state of all the first protection branches according to the vehicle safety signal.

[0012] In some embodiments, the vehicle power supply system also includes: an emergency stop protection device and a protection power supply, the protection power supply is respectively connected to multiple fuse protection devices through a second protection branch, the emergency stop protection devices are multiple and correspond one to one with the second protection branch, the emergency stop protection device is connected to the protection power supply, and the emergency stop protection device is arranged in the corresponding second protection branch to control the on and off of the second protection branch, and the emergency stop protection device is a manual control device.

[0013] According to some embodiments of the present invention, a plurality of the emergency stop protection devices are configured to be closed or opened synchronously.

[0014] In a second aspect, an embodiment of the present invention further provides a protection control method for a vehicle power supply system, which is applied to the above-mentioned vehicle power supply system and includes the following control steps:

[0015] Get the fuse trigger signal;

[0016] The corresponding fuse protection device of the battery pack is controlled to fuse according to the fuse trigger signal.

[0017] The protection and control method for a vehicle power supply system of the present invention feeds back a fuse trigger signal to a control module when an abnormal operation occurs in the battery pack of the vehicle power supply system. The control module controls the first protection branch corresponding to the abnormal battery pack to be turned on, so that the fuse protection device of the abnormal battery pack cuts off the power supply circuit. The response is rapid and timely, thereby improving the safety of the battery pack and further improving the safety of the entire vehicle.

[0018] In some embodiments, the fuse trigger signal includes a thermal safety signal of the battery pack;

[0019] After acquiring the fuse trigger signal and before controlling the corresponding fuse protection device of the battery pack to fuse according to the fuse trigger signal, the method further includes:

[0020] Determine whether there is any abnormality in the communication between the control module and the battery pack:

[0021] If the communication is abnormal, the control module controls all the first protection branches to be turned on;

[0022] If there is no abnormality in the communication, the source of the thermal safety signal is determined, and the control module controls the first protection branch corresponding to the battery pack from which the thermal safety signal originates to be turned on.

[0023] In some embodiments, the fuse trigger signal further includes a vehicle safety signal;

[0024] The controlling the corresponding fuse protection device of the battery pack to fuse according to the fuse trigger signal includes:

[0025] When the vehicle safety signal is acquired, the control module controls all the first protection branches to be turned on.

[0026] In some embodiments, the fuse trigger signal further includes a conduction state of an input signal, and controlling the corresponding fuse protection device of the battery pack to fuse according to the fuse trigger signal includes:

[0027] When the input signal is disconnected, the control module controls all the first protection branches to be turned on.

[0028] In some embodiments, the following steps are further included:

[0029] The operator determines whether there is a need for a fuse to trigger;

[0030] If present, all the emergency stop protection devices are manually controlled to close so that the fuse protection devices of all the battery packs are blown.

[0031] In a third aspect, an embodiment of the present invention further provides a vehicle, comprising the above-mentioned vehicle power supply system.

[0032] In the vehicle of the present invention, when an abnormality occurs in the battery pack of the power supply circuit, a fuse trigger signal is promptly fed back to the control module, so that the power supply circuit is disconnected in time, thereby preventing the abnormality of the battery pack from continuing to expand, which is beneficial to improving the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0034] Figure 1 A circuit diagram of a vehicle power supply system according to an embodiment of the present invention;

[0035] Figure 2 A circuit diagram of a vehicle power supply system according to another embodiment of the present invention;

[0036] Figure 3 A circuit diagram of a vehicle power supply system according to another embodiment of the present invention;

[0037] Figure 4 A circuit diagram of a vehicle power supply system according to another embodiment of the present invention;

[0038] Figure 5 This is an architecture diagram of a vehicle power supply system according to an embodiment of the present invention;

[0039] Figure 6 This is a step diagram of a protection and control method for a vehicle power supply system according to an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 100-Vehicle power supply system;

[0042] 110-battery pack; 111-energy storage device; 112-fuse protection device; 113-power supply circuit;

[0043] 120-protection power supply;

[0044] 130-first protection branch;

[0045] 150-control module;

[0046] 160-First access; 161-Rescue ring;

[0047] 170-Second protection branch;

[0048] 180-Emergency stop protection device. DETAILED DESCRIPTION

[0049] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0050] The terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the implementation of the application described herein, for example, can be implemented in an order other than those illustrated or described herein. In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0051] The battery packs of existing new energy vehicles have high energy density. Any electrical faults (such as short circuits, overcharging, or over-discharging) can lead to serious consequences, including battery damage or fire. Therefore, improving the safety and reliability of battery systems is key to ensuring the overall performance of the vehicle.

[0052] In view of this, the present invention provides a vehicle power supply system, a protection control method and a vehicle, which can monitor the operating status of the battery pack and cut off the power supply circuit of the battery pack when the operating status of the battery pack is abnormal, thereby improving the safety of the vehicle.

[0053] refer to Figures 1 to 5 In a first aspect, an embodiment of the present invention provides a vehicle power supply system 100 for supplying power to a vehicle's electric motor and other electrical devices. The vehicle power supply system 100 may include: a battery pack 110, a first protection branch 130, and a control module 150.

[0054] The vehicle power supply system 100 includes multiple battery packs 110, each of which includes an energy storage device 111 and a fuse protection device 112. The energy storage device 111 can be a chemical battery, such as a lithium-ion battery, a lead-acid battery, or a sodium-sulfur battery, and provides energy for the vehicle power supply system 100. Each energy storage device 111 is suitable for forming a power supply circuit 113 with the vehicle's electrical devices. The fuse protection device 112 is provided in the power supply circuit 113 and is used to disconnect the corresponding power supply circuit 113. For example, the fuse protection device 112 can be an active fuse, or it can be externally connected to a normally open protection circuit (such as the first protection branch 130 or the second protection branch described below). When the battery pack 110 is operating abnormally, the protection circuit is connected, the fuse protection device 112 rapidly heats up, and the conductive wire connected to the power supply circuit 113 in the fuse protection device 112 is melted. At this time, the connection between the energy storage device 111 and the power supply circuit 113 is severed.

[0055] It is understood that the power supply circuits 113 formed between each electrical device and the energy storage device 111 can be independent of each other, that is, multiple power supply circuits 113 can be provided. Alternatively, the energy storage devices 111 can be connected in parallel to improve the overall performance of the vehicle while reducing the impact of each other on the energy storage devices 111.

[0056] The number of first protection branches 130 provided matches the number of battery packs, and the fuse protection device 112 of each battery pack 110 is installed in the corresponding first protection branch 130. Thus, when the first protection branch 130 is in the disconnected state, the fuse protection device 112 is not activated, and the battery pack 110 operates normally. When the first protection branch 130 is in the conductive state, the fuse protection device 112 is activated and disconnects the power supply circuit 113 of the corresponding battery pack 110.

[0057] The control module 150 is configured to obtain a fuse trigger signal and, based on the fuse trigger signal, control the conduction state of the corresponding first protection branch 130 to control the blown state of the corresponding fuse protection device 112. For example, when the control module 150 does not obtain a fuse trigger signal, the power supply circuit 113 operates normally, the first protection branch 130 is normally open, and the fuse protection device 112 is not blown. When the control module 150 obtains a fuse trigger signal, the power supply circuit 113 operates abnormally, the first protection branch 130 becomes conductive, the fuse protection device 112 blows, and the corresponding protection circuit is disconnected.

[0058] refer to Figure 1 , where the control module 150 can be an MCU (microcontroller). In this case, the vehicle power supply system may also include a protective power supply 120 and an ignition relay. The protective power supply 120 is connected to multiple fuse protection devices 112 via a first protection branch 130. In other words, each battery pack 110 includes a fuse protection device 112. Each battery pack 110 forms multiple power supply circuits 113 with minimal or no interference with the electrical device. The fuse protection device 112 of each battery pack 110 is connected to each power supply circuit 113. In addition, the fuse protection device 112 is also connected to the protection circuit including the protective power supply 120 and the first protection branch 130. When an abnormality occurs in a battery pack 110, the ignition relay connected to the corresponding fuse protection device 112 is controlled to start and close, causing the corresponding first protection branch 130 to conduct, and the fuse protection device 112 to disconnect the power supply circuit 113 corresponding to the abnormal battery pack 110.

[0059] It is understandable that in order to reduce the impact on the power supply circuit 113 and control equipment costs, the protection power supply 120 can select a low-voltage power supply so that the low-voltage power supply meets the fusing voltage of the fuse protection device 112.

[0060] Multiple ignition relays correspond one to each first protection branch 130. Each ignition relay is located in a corresponding first protection branch 130 to control the on / off state of the first protection branch 130. For example, when the ignition relay is off, the first protection branch 130 is normally open, and the power supply circuit 113 operates normally. Activating the ignition relay turns the first protection branch 130 on, activating the corresponding fuse protection device 112 within the first protection branch 130 and disconnecting the power supply circuit corresponding to the fuse protection device 112.

[0061] refer to Figure 2 、 Figure 3 and Figure 4 Alternatively, the control module 150 may be an XCU (control chip), which may be a powered chip. Therefore, the first protection branch 130 may be directly connected to an interface of the control module 150 , and the XCU may be integrated with a switch control circuit, control logic, or PWM (pulse width modulation). In this way, the control module 150 directly controls the on / off state of the first protection branch 130 , eliminating the need for an external ignition relay and saving equipment costs. Furthermore, direct control of the on / off state of the first protection branch 130 by the XCU results in a faster response rate, which is beneficial for improving vehicle safety.

[0062] Optionally, when the control module 150 uses PWM (pulse width modulation method) to control the on and off of the first protection branch 130, a protection resistor can be set in the first protection branch 130, so that the control module 150 controls the fuse protection device 112 in a current-limiting direct drive manner, without setting an ignition relay, and the circuit reliability is higher.

[0063] Of course, the control module 150 can also be directly connected to the fuse protection device 112 for communication.

[0064] By varying the duty cycle of the PWM signal, precise control of the connected circuit can be achieved even without a protective resistor in the first protection branch 130. This enables bilateral control of the fuse protection device, improves the anti-interference capability of the first protection branch 130, and reduces the probability of false triggering of the first protection branch 130.

[0065] The fuse trigger signal may include a thermal safety signal from the battery pack 110. The control module 150 is in communication with each of the multiple battery packs 110 and the first protection branch 130. This allows the control module 150 to detect the operating status of the corresponding battery pack 110 and respond promptly by controlling the corresponding first protection branch 130 to conduct, activating the fuse protection device 112 and disconnecting the power supply circuit 113 of the corresponding battery pack 110. This improves the safety of the vehicle power supply system 100 while allowing other battery packs 110 to operate normally, minimizing the impact on vehicle performance and improving user satisfaction.

[0066] Understandably, thermal safety signals may include: warnings for excessive temperature, uneven temperature distribution, abnormal temperature change rate, cooling system failure, thermal runaway, external heat source impact, circuit anomalies, and voltage anomalies. When a thermal safety signal such as a cooling system failure, thermal runaway, or external heat source impact occurs that could affect the entire vehicle power supply system 100, the control module 150 simultaneously switches all first protection branches 130 on, disconnecting the corresponding power supply circuits 113 to ensure vehicle safety.

[0067] The vehicle power supply system 100 of the present invention supplies energy to the vehicle's electrical devices via a power supply circuit 113 formed between the battery pack 110 and the vehicle's electrical devices. A protective power source 120 and a first protection branch 130 form a protection circuit. When the control module 150 receives a fuse trigger signal, the corresponding first protection branch 130 conducts, causing the fuse protection device 112 of the corresponding battery pack 110 to fuse, disconnecting the power supply circuit 113 of the abnormal battery pack 110 and improving the safety of the battery pack 110.

[0068] refer to Figure 1 In some embodiments, the fuse trigger signal also includes an input signal, and the control module 150 is further configured to control the conduction state of all first protection branches 130 according to the conduction state of the received input signal. For the sake of vehicle safety, when a more serious safety accident occurs, external rescue personnel need to cut off the power supply of the entire vehicle to rescue the people in the vehicle. Generally speaking, a rescue ring is provided on the vehicle, and multiple rescue rings can be provided, located in various places in the vehicle passenger compartment. Multiple rescue rings are connected in series to a first channel 160 that communicates with the control module 150, and input signals are sent to the control module 150 through the first channel 160. In this way, after an accident occurs, when the rescue personnel perform a rescue, they only need to pull a rescue ring 161. At this time, the input signal is disconnected, and the control module 150 controls all the first protection branches 130 to conduct and cut off the power supply of the battery pack 110, thereby improving the safety of the equipment.

[0069] refer to Figures 2 to 4 Optionally, the first path 160 can be directly connected to the first protection branch 130 to reduce equipment costs, or the first path 160 can also be connected to an independent power supply to improve the reliability of the vehicle power supply system 100.

[0070] In some embodiments, the fuse trigger signal also includes a vehicle safety signal, and the control module 150 is further configured to control the conduction state of all first protection branches 130 based on the vehicle safety signal. When the control module 150 receives the vehicle safety signal, the entire vehicle is in an abnormal state. To prevent further abnormalities in the battery pack 110, such as spontaneous combustion or even explosion, the control module 150 controls all first protection branches 130 to conduct, thereby activating all fuse protection devices 112 and disconnecting all power supply circuits 113, thereby improving vehicle safety.

[0071] Optionally, the vehicle safety signal may include but is not limited to airbag malfunction indication, brake system warning, engine malfunction, high coolant temperature warning, collision warning and other safety warning signals.

[0072] In some embodiments, the vehicle power supply system 100 may further include an emergency stop protection device 180 and a protective power source 120. The protective power source is connected to a plurality of fuse protection devices 112 via a second protection branch. The emergency stop protection devices correspond one to one with the second protection branches 170. The emergency stop protection device 180 is connected to the protective power source and is provided on the corresponding second protection branch 170 to control the on and off of the second protection branch 170. The emergency stop protection device 180 is a manually controlled device. The second protection branch 170 provides another control scheme for the fuse protection device 112. The driver and passengers in the passenger compartment can manually control the on and off of the second protection branch 170, thereby disconnecting the power supply circuit 113 of the entire vehicle, further improving the safety of the vehicle.

[0073] It can be understood that the trigger end of the emergency stop protection device 180 can be set in the passenger compartment. For example, the trigger end of the emergency stop protection device 180 can be set in the driver's cab, or the trigger end of the emergency stop protection device 180 can also be set at the co-pilot's seat. In this way, when an emergency situation occurs to the people on the vehicle (such as sudden illness), other people on the vehicle can cut off the power supply circuit through the emergency stop protection device 180 to stop the vehicle from running, thereby improving the vehicle's operating safety.

[0074] It can be understood that the fuse protection device 112 is respectively connected to the first protection branch 130 and the second protection branch 170. In order to avoid mutual interference between the first protection branch 130 and the second protection branch 170, the first protection branch 130 and the second protection branch 170 can be arranged in parallel, thereby improving the reliability of the vehicle power supply system 100.

[0075] According to some embodiments of the present invention, multiple emergency stop protection devices 180 are configured to be closed or opened synchronously. It is understood that when the driver or other passengers in the passenger compartment activate the emergency stop protection device 180, it must be determined that the vehicle needs to be stopped safely within a short period of time. The synchronous closure of multiple emergency stop protection devices 180 helps to improve the response rate of disconnecting the power supply circuit 113 of the entire vehicle, thereby improving the safety of the entire vehicle.

[0076] Optionally, when the control module 150 uses an XCU control chip, multiple emergency stop protection devices 180 can also be communicatively connected to the fuse protection device 112, and the fuse protection device 112 can also be communicatively connected to the control module 150. This allows for bilateral control of the emergency stop protection devices 180, further improving the anti-interference capability of the protection circuit, reducing the probability of false triggering of the emergency stop protection devices 180, and thereby enhancing the reliability of the vehicle power supply system 100.

[0077] refer to Figures 1 to 6 In a second aspect, an embodiment of the present invention further provides a protection control method for a vehicle power supply system, which is applied to the above-mentioned vehicle power supply system 100. The protection control method may include the following control steps:

[0078] S210: Obtaining a fuse trigger signal;

[0079] Optionally, the fuse trigger signal can be a battery thermal safety signal received by the control module 150. In this case, the operation of a single battery pack 110 may be abnormal, or the control module 150 may detect an input signal of communication between the trigger end of the emergency stop protection device 180 in the passenger compartment and the emergency stop protection device 180, and the power supply circuit 113 cannot be cut off in the passenger compartment. Alternatively, the fuse trigger signal can also be a vehicle safety signal received by the control module 150.

[0080] S210 : Controlling the corresponding fuse protection device 112 of the battery pack 110 to fuse according to the fuse trigger signal.

[0081] When the control module 150 determines that the battery pack 110 is operating abnormally based on the received battery thermal safety signal, it controls the power supply circuit 113 of the corresponding battery pack 110 without affecting the operation of the entire vehicle. When the control module 150 receives an input signal or a vehicle safety signal, indicating a high safety risk to the entire vehicle, it is necessary to control the disconnection of all power supply circuits 113 of the vehicle power supply system 100 to ensure the safety of the entire vehicle.

[0082] The protection and control method of the vehicle power supply system of the present invention feeds back different fuse trigger signals to the control module 150 when an abnormal operation occurs in the battery pack 110 of the vehicle power supply system 100 or the entire vehicle. The control module 150 controls the first protection branch 130 corresponding to the abnormal battery pack 110 to be turned on, so that the fuse protection device 112 of the abnormal battery pack 110 cuts off the power supply circuit 113. The response is rapid and timely, thereby improving the safety of the battery pack 110 and thus improving the safety of the entire vehicle.

[0083] In some embodiments, the fuse trigger signal includes a thermal safety signal of the battery pack 110. The thermal safety signal may include: over-temperature warning, uneven temperature distribution warning, abnormal temperature change rate, cooling system failure, thermal runaway warning, external heat source impact warning, circuit abnormality and voltage abnormality and other signals.

[0084] For example, when the operating temperature of a battery pack 110 is too high, the control module 150 receives an over-temperature warning signal. At this time, the over-temperature warning signal is a fuse trigger signal. The control module 150 controls the corresponding first protection branch 130 to be turned on, and controls the corresponding fuse protection device 112 to be blown to cut off the power supply circuit 113 of the corresponding battery pack 110. The remaining power supply circuits 113 may not be affected.

[0085] After obtaining the fuse trigger signal and before controlling the fuse protection device 112 of the corresponding battery pack 110 to fuse according to the fuse trigger signal, the following steps may also be included:

[0086] Determine whether there is any abnormality in the communication between the control module 150 and the battery pack 110: If the communication is abnormal, the control module 150 controls all the first protection branches 130 to be turned on; if the communication is normal, determine the source of the thermal safety signal, and the control module 150 controls the first protection branch 130 corresponding to the battery pack 110 where the thermal safety signal comes from to be turned on.

[0087] In this embodiment, if an abnormality occurs in communication between the control module 150 and the battery pack 110, the corresponding abnormal battery pack 110 cannot be determined. To ensure vehicle safety, all first protection branches 130 are turned on, causing all power supply circuits 113 to be disconnected, thereby facilitating the identification of the abnormal battery pack 110. If communication between the control module 150 and the battery pack 110 is normal, the abnormal battery pack 110 can be directly identified. The control module 150 controls the first protection branch 130 corresponding to the battery pack 110 from which the thermal safety signal originates to be turned on, disconnecting the power supply circuit 113 of the abnormal battery pack 110 while allowing the other power supply circuits 113 to operate normally, thereby improving vehicle usability.

[0088] In some embodiments, the fuse trigger signal may also include a vehicle safety signal; the vehicle safety signal may include airbag failure indication, brake system warning, engine failure, high coolant temperature warning, collision warning and other safety warning signals.

[0089] For example, when the control module 150 receives a collision warning signal, it means that if the vehicle continues to move, a collision is very likely to occur and the vehicle needs to stop quickly. Therefore, the collision warning serves as a fuse trigger signal, and the control module 150 controls all first protection branches 130 to be turned on, cutting off the power supply circuits 113 of all battery packs 110, thereby improving the safety of the vehicle.

[0090] Controlling the corresponding fuse protection device 112 of the battery pack 110 to fuse according to the fuse trigger signal includes:

[0091] When the vehicle safety signal is obtained, the control module 150 controls all the first protection branches 130 to be turned on, so that all the power supply circuits 113 on the vehicle are disconnected, thereby improving the safety of the entire vehicle.

[0092] In some embodiments, the fuse trigger signal also includes the conduction state of the input signal. For the safety of the entire vehicle, when a more serious safety accident occurs, external rescue personnel need to cut off the power supply of the entire vehicle to rescue the people in the vehicle. At this time, the conduction state of the input signal can be the conduction state of the input signal between the rescue ring 161 set in the passenger compartment and the control module 150. Multiple rescue rings can be set up and located in various places in the vehicle passenger compartment. Multiple rescue rings are connected in series to a first path 160 that communicates with the control module 150, and the input signal is sent to the control module 150 through the first path 160. In this way, after an accident occurs, when rescue personnel perform rescue, they only need to pull a rescue ring. At this time, the input signal is disconnected, and the control module 150 controls all the first protection branches 130 to conduct and cut off the power supply of the battery pack 110, thereby improving the safety of the equipment.

[0093] Controlling the corresponding fuse protection device 112 of the battery pack 110 to fuse according to the fuse trigger signal includes: when the input signal is disconnected, that is, after the rescuer pulls the rescue ring 161, the control module 150 controls all first protection branches 130 to conduct. In this way, after the rescuer pulls the rescue ring 161 and the input signal is disconnected, the control module 150 controls all first protection branches 130 to conduct, disconnecting all power supply circuits 113, thereby improving vehicle safety.

[0094] In some embodiments, the protection control method for the vehicle power supply system further includes the following steps:

[0095] The operator (driver or passenger) determines whether there is a need for a fuse trigger, such as brake failure, sudden driver illness, or a possible accident.

[0096] If present, all emergency stop protection devices 180 are manually controlled to close, thereby melting the fuse protection devices 112 of all battery packs 110. This provides another safety mechanism for the vehicle. If the control module 150 fails to respond in time, the operator can manually control the emergency stop protection devices 180 to close, cutting off the normal power supply circuit 113, thereby improving the safety of the entire vehicle.

[0097] In a third aspect, an embodiment of the present invention further provides a vehicle, comprising the above-mentioned vehicle power supply system 100 .

[0098] In the vehicle of the present invention, when an abnormality occurs in the battery pack 110 of the power supply circuit 113, a fuse trigger signal is promptly fed back to the control module 150, so that the power supply circuit 113 is disconnected in time, thereby preventing the abnormality of the battery pack 110 from continuing to expand, which is beneficial to improving the safety of the vehicle.

[0099] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0100] It should be noted that phrases such as "one embodiment," "an embodiment," "exemplary embodiments," and "some embodiments" in this specification may indicate embodiments that may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0101] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a" or "an" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0102] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0103] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle power supply system, characterized in that: include: A battery pack, wherein the battery packs are multiple, each of the battery packs includes an energy storage device and a fuse protection device, each of the energy storage devices is suitable for forming a power supply circuit with the vehicle's electrical device, and the fuse protection device is provided in the power supply circuit and is used to cut off the corresponding power supply circuit; A first protection branch, wherein the fuse protection device of each battery pack is provided in the corresponding first protection branch; a control module, configured to obtain a fuse trigger signal, the fuse trigger signal including a thermal safety signal of the battery pack, the control module being communicatively connected to the plurality of battery packs and the first protection branch, and configured to control the conduction state of the corresponding first protection branch according to the fuse trigger signal, so as to control the fusing state of the corresponding fuse protection device; A protection power supply, wherein the protection power supply is connected to each of the plurality of fuse protection devices via a second protection branch; An emergency stop protection device, wherein the emergency stop protection device is a plurality of devices corresponding one to one with the second protection branch, the emergency stop protection device is connected to the protection power supply, and the emergency stop protection device is provided in the corresponding second protection branch to control the on and off of the second protection branch, and the emergency stop protection device is a manually controlled device; The fuse protection device is respectively connected to the first protection branch and the second protection branch, and the first protection branch and the second protection branch are arranged in parallel to prevent the first protection branch and the second protection branch from interfering with each other.

2. The vehicle power supply system according to claim 1, characterized in that: The fuse trigger signal also includes an input signal, and the control module is further configured to control the conduction state of all the first protection branches according to the conduction state of the received input signal.

3. The vehicle power supply system according to claim 1, characterized in that: The fuse trigger signal also includes a vehicle safety signal, and the control module is further configured to control the conduction state of all the first protection branches according to the vehicle safety signal.

4. The vehicle power supply system according to claim 1, characterized in that: The plurality of emergency stop protection devices are configured to be closed or opened synchronously.

5. A protection and control method for a vehicle power supply system, applied to the vehicle power supply system according to any one of claims 1 to 4, characterized in that: The control steps include: Get the fuse trigger signal; The corresponding fuse protection device of the battery pack is controlled to fuse according to the fuse trigger signal.

6. The protection and control method for a vehicle power supply system according to claim 5, characterized in that: The fuse trigger signal includes a thermal safety signal of the battery pack; After acquiring the fuse trigger signal and before controlling the corresponding fuse protection device of the battery pack to fuse according to the fuse trigger signal, the method further includes: Determine whether there is any abnormality in the communication between the control module and the battery pack: If the communication is abnormal, the control module controls all the first protection branches to be turned on; If there is no abnormality in the communication, the source of the thermal safety signal is determined, and the control module controls the first protection branch corresponding to the battery pack from which the thermal safety signal originates to be turned on.

7. The protection and control method for a vehicle power supply system according to claim 5, characterized in that: The fuse trigger signal also includes a vehicle safety signal; The controlling the corresponding fuse protection device of the battery pack to fuse according to the fuse trigger signal includes: When the vehicle safety signal is acquired, the control module controls all the first protection branches to be turned on.

8. The protection and control method for a vehicle power supply system according to claim 5, characterized in that: The fuse trigger signal also includes the conduction state of the input signal, and the controlling the corresponding fuse protection device of the battery pack to fuse according to the fuse trigger signal includes: When the input signal is disconnected, the control module controls all the first protection branches to be turned on.

9. The protection and control method for a vehicle power supply system according to claim 5, characterized in that: The following steps are also included: The operator determines whether there is a need for a fuse to trigger; If present, all the emergency stop protection devices are manually controlled to close so that the fuse protection devices of all the battery packs are blown.

10. A vehicle, characterized in that: include: The vehicle power supply system according to any one of claims 1 to 4.

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