Power supply control system and method, and traction battery apparatus, power supply system and method for vehicle, and vehicle

Abstract

A power supply control system and method, and a traction battery apparatus, a power supply system and method for a vehicle, and a vehicle, which belong to the technical field of batteries. The power supply control system is arranged inside a traction battery apparatus, and comprises: a voltage conversion module, which is configured to perform voltage conversion on electric energy output by a traction battery in a traction battery apparatus and output the electric energy subjected to the conversion; a first power supply module, which is configured to output electric energy on the basis of a first output instruction, wherein the first output instruction is used for instructing the power supply control system to start; and a first controller, which is connected to the first power supply module, and is configured to receive the electric energy output by the first power supply module, and in response to a second output instruction being received, control the voltage conversion module to output the electric energy subjected to the conversion, wherein the second output instruction is used for instructing the power supply control system to output the electric energy. The power supply control system can improve the power supply efficiency of a vehicle.

Description

Power supply control system and method, power battery device, vehicle power supply system and method, vehicle

[0001] Cross-referencing

[0002] This application incorporates Chinese Patent Application No. 202411822616.7, filed on December 11, 2024, entitled “Power supply control system and method, power battery device, power supply system and method for vehicle, vehicle”, which is incorporated herein by reference in its entirety. Technical Field

[0003] This application relates to the field of battery technology, and in particular to a power supply control system and method, a power battery device, a power supply system and method for a vehicle, and a vehicle. Background Technology

[0004] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0005] During the use of electric vehicles, the electrical equipment within the vehicle requires low-voltage power to ensure the normal operation of its various functions. Current electric vehicles typically include a DC-DC converter. When the vehicle is powered on at high voltage, the DC-DC converter can convert the voltage of the power battery and output it to the electrical equipment. However, when the vehicle is powered off at high voltage, the DC-DC converter cannot receive power from the power battery and therefore cannot provide low-voltage power to the electrical equipment. Instead, the vehicle must rely on its own battery to supply power, resulting in limited power supply efficiency. Summary of the Invention

[0006] This application aims to at least address the technical problem of limited low-voltage power supply efficiency when a vehicle is under high-voltage power. Therefore, one objective of this application is to provide a power supply control system that enables the vehicle to use electrical energy from the power battery to supply power to electrical equipment even under high-voltage power, thereby improving power supply efficiency.

[0007] An embodiment of the first aspect of this application provides a power supply control system disposed inside a power battery device, comprising: a voltage conversion module configured to convert the electrical energy output from the power battery in the power battery device into voltage and output the converted electrical energy; a first power module configured to output electrical energy based on a first output command, the first output command being used to instruct the power supply control system to start; and a first controller connected to the first power module, the first controller being configured to: receive the electrical energy output from the first power module; and, in response to receiving a second output command, control the voltage conversion module to output the converted electrical energy, the second output command being used to instruct the power supply control system to output electrical energy.

[0008] In the technical solution of this application embodiment, the power supply control system is installed inside the power battery device. When the vehicle is in a high-voltage power-down state, the power supply control system can still convert the voltage of the electrical energy output by the power battery and provide low-voltage power supply to various electrical devices in the vehicle according to the power supply demand. This allows the vehicle to use the electrical energy of the power battery device to supply power to the electrical devices in the vehicle in addition to the power battery when it is in a high-voltage power-down state, thereby improving power supply efficiency.

[0009] In some embodiments, the first controller is further configured to: in response to receiving a first stop command, control the voltage conversion module to stop outputting converted electrical energy. The first controller can control the voltage conversion module to stop outputting electrical energy, thereby enabling control of the voltage conversion module according to power supply requirements.

[0010] In some embodiments, the first controller is further configured to: before controlling the voltage conversion module to output converted electrical energy in response to receiving a second output command, control the first power module to stop outputting electrical energy to the first controller in response to satisfying at least one of the following conditions: receiving a first shutdown command; not receiving the first output command within a first time period after receiving the electrical energy output from the first power module; and not receiving the second output command within a second time period after receiving the electrical energy output from the first power module. By controlling the first power module to stop outputting electrical energy by determining whether a specific command has been received before controlling the voltage conversion module to output electrical energy, the first power module can be controlled to stop outputting electrical energy in a timely manner when the power supply control system does not need to output electrical energy, thereby reducing energy consumption.

[0011] In some embodiments, the first controller is further configured to: after controlling the voltage conversion module to stop outputting converted electrical energy in response to receiving a first shutdown command; and after controlling the first power supply module to stop outputting electrical energy to the first controller in response to not receiving the first output command within a third time period. After controlling the voltage conversion module to stop outputting electrical energy to the electrical device, if no first output command is received within a certain period, timely control of the first power supply module to stop outputting electrical energy can reduce the energy consumption of the first power supply module.

[0012] In some embodiments, the first controller is further configured to: determine whether the state of the power supply control system meets a first state condition; generate first fault information in response to the state of the power supply control system not meeting the first state condition; determine whether the state of the power battery device meets a second state condition; and generate second fault information in response to the state of the power battery device not meeting the second state condition. By determining whether the states of the power supply control system and the power battery device meet the conditions for normal operation, abnormal risks can be identified in a timely manner, improving the safety and reliability of the power supply process.

[0013] In some embodiments, the first controller is further configured to: control the voltage conversion module to stop outputting converted electrical energy in response to a first state condition not being met by the power supply control system and / or a second state condition not being met by the power battery device. When an abnormality is determined to exist in the power supply control system and / or the power battery device, causing the voltage conversion module to stop outputting reduces the risk of safety failures during the power supply process and improves safety.

[0014] In some embodiments, the first controller is further configured to: after the voltage conversion module stops outputting converted electrical energy, control the first power module to stop outputting electrical energy to the first controller in response to satisfying at least one of the following conditions: receiving a first shutdown command; or controlling the first power module to stop outputting electrical energy to the first controller in response to not receiving a first output command within a fourth time period. When an abnormality occurs in the power supply process and the voltage conversion module stops outputting electrical energy to the electrical device, the first power module is controlled according to the received command, thereby controlling whether the first power module outputs electrical energy according to the progress status of the power supply process, reducing the energy consumption of the first power module.

[0015] In some embodiments, the first controller is further configured to: after receiving electrical energy output from the first power module, send a locking command to the first power module, the locking command instructing the first power module to output electrical energy to the first controller. By sending the locking command to the first power module, the first power module can continuously output electrical energy to the first controller, reducing the probability of a power outage in the first controller.

[0016] In some embodiments, the first controller is further configured to: after controlling the voltage conversion module to stop outputting converted electrical energy in response to receiving a first shutdown command; and to stop sending a lock command to the first power supply module in response to not receiving the first output command within a fifth time period. If the first output command is not received within a certain period after the voltage conversion module stops outputting, the sending of the lock command is stopped, and the first power supply module will stop outputting electrical energy to reduce energy consumption.

[0017] In some embodiments, the power supply control system further includes at least one of the following: a first filtering module, connected to the voltage conversion module, configured to filter the electrical energy output from the power battery; and a second filtering module, connected to the voltage conversion module, configured to filter the converted electrical energy output from the voltage conversion module. By incorporating filtering modules into the power supply control system, the electrical energy input to and output from the power supply control system can be filtered, suppressing interference signals and reducing the risk of electrical equipment malfunctioning due to interference signals.

[0018] In some embodiments, the first controller is further configured to determine whether the power supply requirements of the electrical equipment connected to the power supply control system meet a first power supply condition. When the power supply control system is connected to the electrical equipment, confirming the power supply requirements of the electrical equipment facilitates corresponding control of the power supply control system.

[0019] In some embodiments, the first controller is further configured to: in response to a power supply requirement of an electrical device connected to the power supply control system meeting a first power supply condition, control the voltage conversion module to output converted electrical energy according to the power supply requirement. The voltage conversion module is controlled to output electrical energy to the power supply device only when the power supply requirement meets the specific power supply condition; when the power supply requirement does not meet the specific power supply condition, other power supply devices can be controlled to provide electrical energy, thereby improving the accuracy of power supply control and increasing power supply efficiency.

[0020] An embodiment of the second aspect of this application provides a power supply control method for a power supply control system as described in the above embodiments, comprising: receiving electrical energy output from a first power module; and, in response to receiving a second output command, controlling a voltage conversion module to output converted electrical energy, wherein the second output command is used to instruct the power supply control system to output electrical energy. When the vehicle is in a high-voltage power-off state, depending on whether the second output command is received, the voltage conversion module is controlled to provide low-voltage power to various electrical devices in the vehicle, so that in the high-voltage power-off state, in addition to the power supply battery, the vehicle can also use the electrical energy of the power battery device to supply power to the electrical devices in the vehicle, thereby improving power supply efficiency.

[0021] An embodiment of the third aspect of this application provides a power battery device, including: a power supply control system as described in the above embodiments; a power battery connected to the power supply control system; and a battery management unit configured to send a first output command to the power supply control system based on the state of the power battery device. By placing the power supply control system inside the power battery device and having the battery management unit control whether the power supply control system is activated, the power supply control system can be controlled according to usage requirements, thereby improving power supply efficiency.

[0022] In some embodiments, sending a first output command to the power supply control system based on the state of the power battery device includes: sending a first output command to the power supply control system in response to acquiring first state information. The power supply control system is only activated upon acquiring the first state information, thereby allowing the power supply control system to be controlled according to usage requirements and improving power supply efficiency.

[0023] In some embodiments, the battery management unit is further configured to receive converted electrical energy output from the voltage conversion module. Setting the battery management unit to be powered by the electrical energy output from the voltage conversion module allows it to continue operating normally even when the vehicle is in a high-voltage power-off state.

[0024] In some embodiments, the battery management unit is further configured to send a second output command to the power supply control system. By sending the second output command to the power supply control system, the battery management unit can control whether the voltage conversion module outputs power, thereby improving power supply efficiency.

[0025] In some embodiments, the battery management unit is further configured to: determine whether the vehicle to which the power battery is located is in a high-voltage power-off state; and, in response to the vehicle being in a high-voltage power-off state, send a first output command to the power supply control system. When the vehicle is in a high-voltage power-off state, the battery management unit sending the first output command can control the power supply control system to start, thereby enabling it to output electrical energy to electrical devices.

[0026] An embodiment of the fourth aspect of this application provides a power supply system for a vehicle, comprising: a power battery device as described in the above embodiments; a power supply battery configured to supply power to electrical devices in the vehicle; a DC-DC converter connected to the power battery device and configured to convert the electrical energy output from the power battery in the power battery device into voltage and output the converted electrical energy; and a second controller configured to control at least one of the power battery device, the power supply battery, and the DC-DC converter to supply power to the electrical devices according to their power supply requirements. Controlling the supply of power to different electrical devices according to their power supply requirements can improve power supply efficiency while minimizing energy waste.

[0027] In some embodiments, controlling at least one of the power battery, the power supply battery, and the DC-DC converter to supply power to the electrical device according to the power supply requirements of the electrical device includes: determining whether the power supply requirements meet a second power supply condition in response to the power supply requirements of the electrical device not meeting a first power supply condition; controlling the power supply battery to supply power to the electrical device in response to the power supply requirements meeting the second power supply condition; and controlling the DC-DC converter to supply power to the electrical device in response to the power supply requirements not meeting the second power supply condition. When the power supply needs of various electrical devices in the vehicle do not meet the first power supply condition, a suitable power supply device can be selected to supply power to the electrical device based on whether the second power supply condition is met, thereby improving power supply efficiency while minimizing energy waste.

[0028] In some embodiments, the second controller is further configured to send a second output command to the power supply control system. By sending the second output command to the power supply control system, the power supply control system can supply power to the electrical equipment according to power demand.

[0029] In some embodiments, the second controller is further configured to receive converted electrical energy output from the voltage conversion module. Setting the second controller to be powered by the electrical energy output from the voltage conversion module allows it to continue operating normally even when the vehicle is in a high-voltage power-off state.

[0030] An embodiment of the fifth aspect of this application provides a power supply method for a vehicle, used in the power supply system as described in the above embodiments, comprising: controlling at least one of a power battery device, a power supply battery, and a DC-DC converter to supply power to the electrical device according to the power supply requirements of the electrical device. Controlling different power supply devices to supply power to each electrical device in the vehicle according to its power supply requirements can improve power supply efficiency while minimizing energy waste.

[0031] An embodiment of the sixth aspect of this application provides a vehicle including a power supply system as described in the above embodiments.

[0032] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0034] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0035] Figure 1 is a schematic diagram of a power supply control system according to some embodiments of this application;

[0036] Figure 2 is a schematic diagram of a power supply control system according to some embodiments of this application;

[0037] Figure 3 is a flowchart illustrating the power supply control method of some embodiments of this application;

[0038] Figure 4 is a schematic diagram of a power battery device according to some embodiments of this application;

[0039] Figure 5 is a schematic diagram of the power supply system of a vehicle according to some embodiments of this application;

[0040] Figure 6 is a flowchart illustrating a vehicle power supply method according to some embodiments of this application. Detailed Implementation

[0041] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0043] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0044] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0046] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0047] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, 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.

[0048] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0049] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0050] During the use of electric vehicles, the electrical equipment within the vehicle requires low-voltage power to ensure the normal operation of its various functions. Current electric vehicles typically include a DC-DC converter. When the vehicle is powered on at high voltage, the DC-DC converter converts the voltage of the power battery and outputs it to the electrical equipment. If it is desired to use the power battery's output to power the equipment, the electric vehicle needs to be powered on at high voltage, resulting in increased overall vehicle power consumption. In addition to the DC-DC converter, electric vehicles also have a dedicated battery that provides low-voltage power. When the vehicle is powered off at high voltage, the DC-DC converter cannot receive power from the power battery and therefore cannot provide low-voltage power to the equipment. Instead, the vehicle must rely on its dedicated battery to supply power, resulting in limited power efficiency.

[0051] To improve the efficiency of power supply to electrical equipment and enable the use of the battery's output to power equipment even under high-voltage conditions, a power supply control system can be installed inside the battery pack. Because it is located within the battery pack, the power supply control system can still convert the voltage of the battery's output when the vehicle is under high-voltage conditions and then output the converted energy to the electrical equipment in the vehicle.

[0052] Using such a power supply control system, power can be supplied to electrical equipment even under high voltage conditions, relying on the power energy output from the power battery, thereby improving power supply efficiency.

[0053] The power supply control system disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. Using a power supply control system disclosed in this application facilitates the use of battery power to supply power to the electrical device when it is under high voltage, thereby improving power supply efficiency.

[0054] This application provides a power supply control system 100, which is disposed inside a power battery device 10. Referring to FIG1, the power supply control system 100 includes a voltage conversion module 110, a first power module 120, and a first controller 130.

[0055] The voltage conversion module 110 is configured to convert the electrical energy output from the power battery 11 in the power battery device 10 into voltage and output the converted electrical energy.

[0056] The first power module 120 is configured to output electrical energy based on a first output command. The first output command is used to instruct the power supply control system 100 to start.

[0057] The first controller 130 is connected to the first power module 120. The first controller 130 is configured to:

[0058] Receive electrical energy output from the first power module 120;

[0059] In response to receiving the second output command, the voltage conversion module 110 is controlled to output the converted electrical energy. The second output command is used to instruct the power supply control system 100 to output electrical energy.

[0060] Electric vehicles typically contain a power battery and a supply battery. The power battery, also known as a high-voltage battery, is located within the power battery pack and has a high output voltage, generally above 200 volts (V). It provides power to the electric vehicle and can meet its significant power demands. The supply battery, also known as a low-voltage auxiliary battery or low-voltage control battery, has a lower output voltage, generally between 12V and 48V. It is mainly used for starting the electric vehicle, powering lights, audio systems, and other electrical equipment, as well as controlling the power battery pack. Externally, a DC-DC converter (DCDC) is usually installed to convert the high-voltage power from the power battery to a low-voltage power supply.

[0061] The high-voltage energization state indicates that the power battery is providing high-voltage power to the electric vehicle, while the high-voltage de-energization state indicates that the power battery has stopped providing high-voltage power to the electric vehicle. In some embodiments, a switching element such as a relay (e.g., a main positive relay, a main negative relay, etc.) is provided between the power battery and the DC-DC converter. In the high-voltage energization state, the relay is closed, connecting the power battery and the DC-DC converter, allowing the power battery to output electrical energy to the DC-DC converter; in the high-voltage de-energization state, the relay is open, disconnecting the power battery from the DC-DC converter, preventing the power battery from outputting electrical energy to the DC-DC converter.

[0062] As shown in Figure 1, the voltage conversion module 110 is connected to the power battery 11 in the power battery device 10, and is used to convert the electrical energy output by the power battery 11 into low-voltage electricity that can be used by electrical equipment in the vehicle. The voltage conversion module 110 can be designed according to the application, for example, it can be in the form of a flyback transformer, a phase-shifted full-bridge circuit, a half-bridge circuit, a full-bridge circuit, a half-bridge resonant circuit (LLC), and a boost circuit + resonant circuit (BOOST + LLC), etc., and this disclosure does not limit it.

[0063] The first power module 120 is connected to the first controller 130 and can be used to supply power to the first controller 130. In one example, the first power module 120 can use a low-dropout regulator (LDO) connected to the power battery 11 in the power battery device 10 to perform voltage conversion on the electrical energy output by the power battery 11; in other embodiments, the first power module 120 can also use an energy storage device, which is not limited in this disclosure.

[0064] The first output command can originate from the Battery Management Unit (BMU) or from an external controller of the power battery device 10, such as the Vehicle Control Unit (VCU) or other microcontroller units (MCUs) in the vehicle. The first output command can be a hard-wired signal (e.g., high / low level) transmitted via a hardwired connection to a chip pin. The first output command can be directly transmitted to the first power module 120. Upon receiving the first output command, the first power module 120 will start and supply power to the first controller 130. Alternatively, the first output command can be transmitted to the first controller 130. When the first controller 130 is in an active state, based on the first output command, the first controller 130 controls the first power module 120 to be in an active or standby state.

[0065] The first controller 130 will start when it receives electrical energy from the first power module 120. In some embodiments, the first controller 130 may also be a microcontroller unit (MCU). The first controller 130 may also be connected to a system base chip (SBC). In one example, after the first power module 120 starts up and outputs electrical energy, the SBC initializes, and the MCU starts up and initializes.

[0066] The voltage conversion module 110 is controlled by the first controller 130. When the first controller 130 receives a second output command, it controls the voltage conversion module 110 to output converted electrical energy to the electrical device. The second output command can also come from the BMU and / or VCU, etc. The second output command can be data transmitted via the Controller Area Network (CAN) bus, or it can be a hard-wired signal (e.g., high or low level) transmitted via hardwired lines. In one example, the second output command is data transmitted via the CAN bus. The second output command can be a command that directly instructs the voltage conversion module 110 to output voltage, or it can be a message with a certain data protocol, which, after being verified, can instruct the voltage conversion module 110 to output voltage.

[0067] The power supply control system is located inside the power battery device. When the vehicle is in a high-voltage power-down state, the power supply control system can still convert the voltage of the electrical energy output by the power battery and provide low-voltage power supply to various electrical devices in the vehicle according to power supply needs. This allows the vehicle to use the electrical energy of the power battery device to supply power to electrical devices in the vehicle in addition to the power battery when it is in a high-voltage power-down state, thereby improving power supply efficiency.

[0068] According to some embodiments of this application, the first controller 130 is further configured to: in response to receiving a first shutdown command, control the voltage conversion module 110 to stop outputting the converted electrical energy.

[0069] When the first controller 130 receives the first shutdown command, it will control the voltage conversion module 110 to stop outputting converted electrical energy to the electrical equipment. The first shutdown command can come from the BMU or from a controller outside the power battery device 10. It can be data transmitted via the CAN bus or hard-wired signals (e.g., high and low levels) transmitted via hardwired lines.

[0070] The first controller can control the voltage conversion module to stop outputting power, thus enabling control of the voltage conversion module according to power supply requirements.

[0071] According to some embodiments of this application, the first controller 130 is further configured to:

[0072] Before the voltage conversion module 110 outputs the converted electrical energy in response to receiving the second output command:

[0073] In response to at least one of the following conditions, the first power module 120 stops outputting power to the first controller 130:

[0074] The first shutdown command has been received;

[0075] No first output command was received within the first time period after receiving the electrical energy output from the first power module 120;

[0076] No second output command was received within the second time period after receiving the electrical energy output from the first power module 120.

[0077] Before the first controller 130 controls the voltage conversion module 110 to output the converted electrical energy, the first power module 120 is in standby mode. In standby mode, the first power module 120 continuously supplies power to the first controller 130.

[0078] If a first shutdown command is received, indicating that the voltage conversion module 110 does not need to output power, the first controller does not need to be in working state, and therefore the first power module 120 can be controlled to stop outputting power.

[0079] In some embodiments, the first output command can be a command that lasts for a relatively long time. When the first output command is continuously received, the first power module 120 will continuously output power. If the first output command is not received within the first time period, it is considered that the first controller 130 does not need to control the voltage conversion module 110 to output power, and the first controller 130 can shut down or enter a sleep mode. At this time, the first power module 120 can be controlled to stop outputting power. It should be understood that in some embodiments, the first output command may also be transmitted to the first power module 120. In these embodiments, if the first output command is not received within the first time period, the first power module 120 can stop outputting power. The first time period can be set according to usage requirements, for example, it can be set to 1 minute (min), etc., and this disclosure does not limit it in this way.

[0080] In some embodiments, the second output command can be a command that lasts for a relatively long time. If no second output command is received within the second time period, it is considered that the first controller 130 does not need to control the voltage conversion module 110 to output power, and the first controller 130 can be turned off or enter a sleep mode. At this time, the first power module 120 can be controlled to stop outputting power. The second time period can be set according to usage requirements, for example, it can be set to 1 minute, etc., and this disclosure does not limit it in this way.

[0081] In some embodiments, power output can be stopped by turning off the first power module 120. To reduce the risk of failure of the first power module 120, it can only be restarted after a certain period of time after it is turned off, for example, after more than 5 seconds.

[0082] Before the voltage conversion module outputs electrical energy, the first power module is controlled by determining whether a specific instruction has been received. This allows the first power module to stop outputting power in a timely manner when the power supply control system does not need to output power, thereby reducing energy consumption.

[0083] According to some embodiments of this application, the first controller 130 is further configured to:

[0084] After receiving the first shutdown command, the control voltage conversion module 110 stops outputting the converted electrical energy:

[0085] In response to not receiving the first output command within the third time period, the first power module 120 is controlled to stop outputting power to the first controller 130.

[0086] After the first controller 130 receives the first shutdown command and controls the voltage conversion module 110 to stop outputting the converted electrical energy, the first power module 120 will also be in standby mode.

[0087] When the first power module 120 is in standby mode, if no first output command is received within the third time period, it is considered that the first controller 130 does not need to control the voltage conversion module 110 to output power, and the first controller 130 can be turned off or enter sleep mode. At this time, the first power module 120 can be controlled to stop outputting power. It should be understood that in embodiments where the first output command is directly transmitted to the first power module 120, if no first output command is received within the third time period, the first power module 120 can stop outputting power. The third time period can be set according to usage requirements, for example, it can be set to 1 minute, etc., and this disclosure does not limit it in this way.

[0088] After the control voltage conversion module stops outputting power to the electrical equipment, if no first output command is received within a certain period of time, the first power supply module is promptly controlled to stop outputting power, thereby reducing the energy consumption of the first power supply module.

[0089] According to some embodiments of this application, the first controller 130 is further configured to:

[0090] Determine whether the state of the power supply control system 100 meets the first state condition;

[0091] In response to the power supply control system 100 not meeting the first state condition, a first fault information is generated;

[0092] Determine whether the state of the power battery device 10 meets the second state condition;

[0093] In response to the fact that the state of the power battery device 10 does not meet the second state condition, a second fault information is generated.

[0094] The first controller 130 can also detect the status of the power supply control system 100 and the power battery device 10, such as detecting parameters like the output voltage of the power battery 11 and the output voltage of the first power module 120. When either the power supply control system 100 or the power battery device 10 is in an abnormal state, the first controller 130 will generate corresponding fault information and report it to the control system inside the electric vehicle, such as the BMU and / or VCU, so that appropriate fault handling measures can be taken.

[0095] The first state condition can be set to indicate that the power supply control system 100 is in a normal operating state. The second state condition can be set to indicate that the power battery device 10 is in a normal operating state. The first and second state conditions can be set according to the application. In the example, the first state condition can be set to the output voltage of the first power module 120 being within a certain voltage range. When the output voltage of the first power module 120 exceeds this voltage range, the power supply control system 100 is considered to be abnormal, and a first fault message is generated. Alternatively, the second state condition can be set to the output voltage of the power battery 11 being within a certain voltage range. When the output voltage of the power battery 11 exceeds this voltage range, the power battery device 10 is considered to be abnormal, and a second fault message is generated. This disclosure does not limit the specific settings of the first and second state conditions.

[0096] It should be understood that the first fault information and the second fault information can be two independent pieces of information, or they can be included in the same fault information. This disclosure does not limit this.

[0097] The signal formats for the first and second fault information can be designed according to usage requirements. For example, they can be CAN bus signals or hard-wired signals, and they can have the same signal format or use different signal formats. The first and second fault information can be transmitted to different control systems inside the electric vehicle, for example, to the BMU and VCU respectively; or they can be transmitted to the same control system.

[0098] By determining whether the power supply control system and power battery device meet the conditions for normal operation, abnormal risks can be identified in a timely manner, thereby improving the safety and reliability of the power supply process.

[0099] According to some embodiments of this application, the first controller 130 is further configured to:

[0100] In response to the power supply control system 100 not meeting the first state condition and / or the power battery device 10 not meeting the second state condition:

[0101] The control voltage conversion module 110 stops outputting the converted electrical energy.

[0102] The voltage conversion module 110 is controlled to output converted electrical energy only when both the power supply control system 100 and the power battery device 10 are in normal condition. If either the power supply control system 100 or the power battery device 10 is in an abnormal state, the first controller 130 will control the voltage conversion module 110 to stop outputting electrical energy.

[0103] In some embodiments, before the control voltage conversion module 110 stops outputting electrical energy, the power supply control system 100 (including its constituent modules) can be controlled to attempt to restart. After multiple restarts, if the state of the power supply control system 100 still does not meet the first state condition and / or the state of the power battery device 10 still does not meet the second state condition, the control voltage conversion module 110 stops outputting electrical energy and generates corresponding fault information.

[0104] When an abnormality is detected in the power supply control system and / or power battery device, the voltage conversion module stops outputting, reducing the risk of safety failures during the power supply process and improving safety.

[0105] According to some embodiments of this application, the first controller 130 is further configured to:

[0106] After the control voltage conversion module 110 stops outputting the converted electrical energy:

[0107] In response to at least one of the following conditions, the first power module 120 stops outputting power to the first controller 130:

[0108] The first shutdown command has been received;

[0109] In response to the failure to receive the first output command within the fourth time period, the first power module 120 is controlled to stop outputting power to the first controller 130.

[0110] If the state of the power supply control system 100 does not meet the first state condition and / or the state of the power battery device 10 does not meet the second state condition, the first controller 130 will control the voltage conversion module 110 to stop outputting the converted electrical energy. At this time, the first power module 120 is in standby mode.

[0111] If a first shutdown command is received, instructing the first controller 130 not to control the voltage conversion module 110 to output power, the first power module 120 can be controlled to stop outputting power.

[0112] If no first output command is received within the fourth time period, it is also considered that the first controller 130 does not need to control the voltage conversion module 110 to output power, and the first controller 130 can shut down or enter sleep mode. At this time, the first power module 120 can be controlled to stop outputting power. It should be understood that in the embodiment where the first output command is directly transmitted to the first power module 120, if no first output command is received within the fourth time period, the first power module 120 can stop outputting power. The fourth time period can be set according to usage requirements, for example, it can be set to 1 minute, etc., and this disclosure does not limit it in this way.

[0113] When an abnormality occurs in the power supply process, the voltage conversion module stops outputting power to the electrical equipment. Based on the received instructions, it controls the first power module, thereby controlling whether the first power module outputs power according to the progress of the power supply process, thus reducing the energy consumption of the first power module.

[0114] According to some embodiments of this application, the first controller 130 is further configured to:

[0115] After receiving electrical energy output from the first power module 120:

[0116] A lock command is sent to the first power module 120. The lock command is used to instruct the first power module 120 to output power to the first controller 130.

[0117] Since the first output command typically originates from the BMU and / or VCU, in some cases, the BMU and / or VCU may be in a sleep state, preventing the first output command from being transmitted. If the first output command is a continuous command, and it is not received, the first power module 120 will stop supplying power to the first controller 130. To maintain the normal operation of the first controller 130, the first power module 120 needs to continue supplying power to the first controller 130 under these circumstances. Therefore, the first controller 130 can send a lock command to the first power module 120, instructing the first power module 120 to continuously output power, thereby enabling the first controller 130 to maintain normal operation.

[0118] By sending a lock command to the first power module, the first power module can continuously output power to the first controller, reducing the probability of the first controller losing power.

[0119] According to some embodiments of this application, the first controller 130 is further configured to:

[0120] After receiving the first shutdown command, the control voltage conversion module 110 stops outputting the converted electrical energy:

[0121] In response to the failure to receive the first output command within the fifth time period, the sending of lock commands to the first power module 120 is stopped.

[0122] After the voltage conversion module 110 stops outputting power, the first power module 120 is in standby mode due to the presence of the lock command, but it continues to supply power to the first controller 130.

[0123] If no first output command is received within the fifth time period, it is considered that the first controller 130 does not need to control the voltage conversion module 110 to output power, and the first controller 130 can be shut down or enter sleep mode. At this time, the sending of lock commands to the first power module 120 can be stopped, so that the first power module 120 stops supplying power to the first controller 130. The fifth time period can be set according to usage requirements, for example, it can be set to 1 minute, etc., and this disclosure does not limit it in this way.

[0124] If no first output command is received within a certain period of time after the voltage conversion module stops outputting, the locking command will be stopped, and the first power supply module will stop outputting power to reduce energy consumption.

[0125] According to some embodiments of this application, referring to FIG2, the power supply control system 100 further includes at least one of a first filter module 140 and a second filter module 150.

[0126] The first filtering module 140 is connected to the voltage conversion module 110 and is configured to filter the electrical energy output by the power battery 11.

[0127] The second filtering module 150 is connected to the voltage conversion module 110 and is configured to filter the converted electrical energy output by the voltage conversion module 110.

[0128] As shown in Figure 2, the first filter module 140 is connected between the power battery 11 and the voltage conversion module 110, and the second filter module 150 is connected to the output terminal of the voltage conversion module 110. In some embodiments, the first filter module 140 and the second filter module 150 can be power filters, also known as EMI (Electromagnetic Interference) filters. EMI filters can effectively filter out interference signals in the power line, improve the quality of the output power, and reduce interference to other devices in the electric vehicle.

[0129] In some embodiments, a safety element, such as a fuse or circuit breaker, can be provided between the power battery 11 and the first filter module 140, at the output end of the second filter module 150, to improve the safety of the power supply control system 100.

[0130] By installing a filtering module in the power supply control system, the electrical energy input to the power supply control system and the electrical energy output by the power supply control system can be filtered to suppress interference signals and reduce the risk that electrical equipment may malfunction due to interference signals.

[0131] According to some embodiments of this application, referring to FIG2, the first controller 130 is further configured to: determine whether the power supply requirements of the electrical equipment connected to the power supply control system 100 meet the first power supply condition.

[0132] When the power supply control system 100 is connected to the electrical equipment, the first controller 130 can determine the power supply requirements of the electrical equipment, such as the power required by each electrical equipment and the power supply voltage in the power supply circuit of each electrical equipment.

[0133] The first power supply condition can be designed according to usage requirements. In one example, the first power supply condition can be set to the power supply voltage in the power supply circuit where the electrical equipment is located being less than or equal to a first voltage threshold. In other embodiments, the first power supply condition can also be designed based on parameters such as the power consumption required by the electrical equipment and the power supply current flowing through the power supply circuit where the electrical equipment is located; this disclosure does not limit this.

[0134] When the power supply control system is connected to the electrical equipment, confirming the power supply requirements of the electrical equipment facilitates the corresponding control of the power supply control system.

[0135] According to some embodiments of this application, the first controller 130 is further configured to: in response to the power supply requirement of an electrical device connected to the power supply control system 100 meeting a first power supply condition, control the voltage conversion module 110 to output the converted electrical energy according to the power supply requirement.

[0136] If it is determined that the power supply requirements of the electrical equipment meet the first power supply condition, the first controller 130 will control the voltage conversion module 110 to supply power to the electrical equipment according to the power supply requirements of the electrical equipment.

[0137] In one example, the first power supply condition can be set to the power supply voltage in the power supply circuit where the electrical device is located being less than or equal to a first voltage threshold. After determining that the power supply voltage in the power supply circuit where the electrical device is located is less than or equal to the first voltage threshold, the first controller 130 will control the voltage conversion module 110 to supply power to the electrical device according to the power supply requirements of the electrical device.

[0138] The voltage conversion module is controlled to output power to the power supply equipment only when the power supply requirements meet specific power supply conditions. When the power supply requirements do not meet specific power supply conditions, other power supply equipment can be controlled to provide power to it, thereby improving the accuracy of power supply control and improving power supply efficiency.

[0139] Based on the same technical concept, this application provides a power supply control method for the power supply control system 100 as described in the above embodiments. The power supply control method 300 includes steps 310 to 320.

[0140] Step 310: Receive electrical energy output from the first power module 120.

[0141] Step 320: In response to receiving the second output command, the voltage conversion module 110 is controlled to output the converted electrical energy. The second output command is used to instruct the power supply control system 100 to output electrical energy.

[0142] The embodiments of the power supply control method 300 can refer to the embodiments of the power supply control system 100, and the repeated parts will not be described again.

[0143] The power supply control method 300 can be executed by the first controller 130. It should be understood that, corresponding to the embodiments of the power supply control system 100, the power supply control method 300 may also include more embodiments.

[0144] When the vehicle is in a high-voltage power-off state, depending on whether a second output command is received, the voltage conversion module is controlled to provide low-voltage power to various electrical devices in the vehicle. This allows the vehicle to use the power battery to supply power to the electrical devices in the vehicle in addition to the power supply battery, thus improving power supply efficiency.

[0145] Based on the same technical concept, this application provides a power battery device. Referring to FIG4, the power battery device 10 includes a power supply control system 100, a power battery 11, and a battery management unit 12 as described in the above embodiments.

[0146] The power battery 11 is connected to the power supply control system 100.

[0147] The battery management unit 12 is configured to send a first output command to the power supply control system 100 based on the state of the power battery device 10.

[0148] As mentioned above, the first output command can originate from the battery management unit 12 (BMU). The battery management unit 12 can determine the current state of the power battery device 10 and receive data sent by controllers on the vehicle, such as the VCU. The specific process of the battery management unit 12 sending the first output command will be detailed below.

[0149] The power supply control system is located inside the power battery device, and the battery management unit controls whether the power supply control system is activated. This allows the power supply control system to be controlled according to usage requirements, thereby improving power supply efficiency.

[0150] According to some embodiments of this application, sending a first output command to the power supply control system 100 based on the state of the power battery device 10 includes: sending a first output command to the power supply control system 100 in response to obtaining first state information.

[0151] In some embodiments, the first status information may indicate that the vehicle is in some abnormal condition or has experienced some malfunction. The first status information may be detected and obtained by the battery management unit 12, or it may be sent to the battery management unit 12 by a controller in the vehicle such as the VCU, and this disclosure does not limit this.

[0152] In one example, the first state information could be vehicle collision information. When a vehicle experiences a collision or other safety incident, the vehicle's controller generates vehicle collision information. After a collision, other power supply devices in the vehicle, such as the DC-DC converter and battery, may be damaged and unable to supply power. At this time, in order to preserve as many vehicle functions as possible, the battery management unit 12 can send a first output command to the power supply control system 100 to activate the power supply control system 100, thereby enabling the power supply control system 100 to also supply power to the electrical devices.

[0153] In another example, the first status information could be information indicating a fault in the DC-DC converter on the vehicle, such as abnormal DC-DC converter output voltage or no output. In this case, the DC-DC converter will not be able to supply power to the electrical equipment normally. At this time, the battery management unit 12 can also send a first output command to the power supply control system 100 to start the power supply control system 100.

[0154] The power supply control system is activated only upon receiving the first state information, allowing it to be controlled according to usage requirements and improving power supply efficiency.

[0155] According to some embodiments of this application, the battery management unit 12 is also configured to receive the converted electrical energy output by the voltage conversion module 110.

[0156] The battery management unit 12 can also be powered by the power supply control system 100, that is, it receives the converted electrical energy output by the voltage conversion module 110.

[0157] Setting the battery management unit to be powered by electrical energy output from the voltage conversion module allows the battery management unit to continue operating normally even when the vehicle is in a high-voltage power-off state.

[0158] According to some embodiments of this application, the battery management unit 12 is also configured to send a second output command to the power supply control system 100.

[0159] As mentioned above, the second output command can come from the battery management unit 12 (i.e., BMU). When the first controller 130 receives the second output command from the battery management unit 12, it will control the voltage conversion module 110 to output the converted electrical energy to the electrical device.

[0160] The battery management unit can control whether the voltage conversion module outputs power by sending a second output command to the power supply control system, thereby improving power supply efficiency.

[0161] According to some embodiments of this application, the battery management unit 12 is also configured to:

[0162] Determine whether the vehicle where the power battery device 10 is located is under high voltage power-off state;

[0163] In response to the vehicle being in a high-voltage off state, a first output command is sent to the power supply control system 100.

[0164] When the power battery device 10 is installed in the vehicle, the battery management unit 12 can determine the vehicle's state in which the power battery device 10 is located. Since other power supply equipment is also installed in the vehicle, such as a DC-DC converter connected to the power battery 11, the electrical energy output from the power battery 11 can be transferred to the DC-DC converter when the vehicle is in a high-voltage powered-on state. Therefore, in a high-voltage powered-on state, the DC-DC converter can be used to supply power to the electrical devices in the vehicle without using the power supply control system 100. The power supply control system 100 is only used when the vehicle is in a high-voltage powered-off state.

[0165] When the vehicle is in a high-voltage power-off state, the battery management unit 12 sends a first output command to the power supply control system 100, thereby activating the power supply control system 100.

[0166] When the vehicle is in a high-voltage off-state, the battery management unit sends a first output command, which can control the power supply control system to start, thereby enabling the output of electrical energy to electrical equipment.

[0167] Based on the same technical concept, this application provides a power supply system for a vehicle. Referring to FIG5, the power supply system 200 includes a power battery device 10, a power supply battery 210, a DC-DC converter 220, and a second controller 230 as described in the above embodiments.

[0168] The power supply battery 210 is configured to supply power to electrical equipment in the vehicle.

[0169] The DC-DC converter 220 is connected to the power battery device 10 and is configured to convert the electrical energy output from the power battery 11 in the power battery device 10 into voltage and output the converted electrical energy.

[0170] The second controller 230 is configured to control at least one of the power battery device 10, the power supply battery 210, and the DC-DC converter 220 to supply power to the electrical equipment according to the power supply requirements of the electrical equipment.

[0171] As shown in Figure 5, the power supply battery 210, the DC-DC converter 220, and the power supply control system 100 in the power battery unit 10 can all supply power to the electrical equipment in the vehicle. Since the power supply control system 100 is located inside the power battery unit 10, even when the vehicle is in a high-voltage power-off state, it can still convert the voltage of the electrical energy output from the power battery 11 in the power battery unit 10 and output the converted low-voltage electricity to the electrical equipment. The DC-DC converter 220 is located outside the power battery unit 10. A relay (e.g., a main positive relay, a main negative relay, etc.) is typically installed between the DC-DC converter 220 and the power battery unit 10 to control whether they are connected. When the vehicle is in a high-voltage off-state, the connection between the DC-DC converter 220 and the power battery device 10 will be disconnected, and the DC-DC converter 220 cannot supply power to the electrical equipment. When the vehicle is in a high-voltage on-state, the DC-DC converter 220 is connected to the power battery device 10. At this time, the DC-DC converter 220 will convert the voltage of the electrical energy output from the power battery 11 and output the converted low-voltage electricity to the electrical equipment.

[0172] The second controller 230 can control the electrical equipment according to its power supply requirements, such as the power consumption of each device and the voltage in the power supply circuit of each device. In the case of multiple devices in the vehicle, the controller can control the total power of all devices or the voltage in the entire low-voltage power supply circuit. Based on the power supply requirements of the devices, the second controller 230 will control at least one of the following: the power battery device 10 (e.g., controlling the power supply control system 100 therein), the power supply battery 210, and the DC-DC converter 220, to supply power to the electrical equipment in the vehicle.

[0173] In some embodiments, the second controller 230 may include a VCU or other controller such as an MCU in a vehicle.

[0174] The first controller 130, battery management unit 12, and second controller 230 can be designed according to usage requirements, for example, they can be combined. In some embodiments, any two of the first controller 130, battery management unit 12, and second controller 230 can be integrated together, or all of them can be integrated together, for example, using the same hardware configuration. In other embodiments, they can also be three independent controllers. This disclosure does not limit this.

[0175] In the example shown in Figure 5, the power battery device 10, the power supply battery 210, and the DC-DC converter 220 can all be connected to the electrical equipment via the connection device 240. The connection device 240 may include switching elements, enabling selective connection between the power battery device 10, the power supply battery 210, the DC-DC converter 220, and the electrical equipment. These switching elements can be controlled by a second controller 230. In some embodiments, the second controller may also be integrated into the connection device 240. It should be understood that the connection device 240 can be configured according to usage requirements. Although in the example shown in Figure 5, the power battery device 10, the power supply battery 210, and the DC-DC converter 220 are illustrated as being connected to the electrical equipment via the connection device 240, in other embodiments, the power supply system 200 may not include the connection device 240, and this disclosure does not limit this.

[0176] By controlling the power supply to different electrical devices according to their power requirements in the vehicle, power supply efficiency can be improved while minimizing energy waste.

[0177] According to some embodiments of this application, controlling at least one of the power battery device 10, the power supply battery 210, and the DC-DC converter 220 to supply power to the electrical device according to the power supply requirements of the electrical device includes process 600. Referring to FIG6, process 600 includes steps 610 to 630.

[0178] Step 610: In response to the fact that the power supply requirements of the electrical equipment do not meet the first power supply condition, determine whether the power supply requirements meet the second power supply condition.

[0179] Step 620: In response to the power supply requirement meeting the second power supply condition, control the power supply battery 210 to supply power to the electrical equipment.

[0180] Step 630: In response to the power supply requirement not meeting the second power supply condition, control the DC-DC converter 220 to supply power to the electrical equipment.

[0181] When the power supply requirement does not meet the first power supply condition, the second controller 230 can determine whether the power supply requirement meets the second power supply condition. Based on whether the power supply requirement of the electrical equipment meets the second power supply condition, the second controller 230 supplies power to the electrical equipment on the vehicle by at least one of the power supply battery 210 and the DC-DC converter 220.

[0182] The second power supply condition can be designed according to usage requirements. In one example, the first power supply condition is that the power supply voltage in the power supply circuit where the electrical device is located is less than or equal to a first voltage threshold. The second power supply condition can then be set to the power supply voltage in the power supply circuit where the electrical device is located being greater than the first voltage threshold and less than or equal to a second voltage threshold. When the power supply requirement meets the second power supply condition, i.e., the power supply voltage in the power supply circuit is greater than the first voltage threshold and less than or equal to the second voltage threshold, the power supply battery 210 will supply power to the electrical device. When the power supply requirement does not meet the second power supply condition, i.e., the power supply voltage in the power supply circuit is greater than the second voltage threshold, the DC-DC converter 220 will supply power to the electrical device. In other embodiments, the second power supply condition can also be designed based on parameters such as the power consumption required by the electrical device and the power supply current flowing through the power supply circuit where the electrical device is located; this disclosure does not limit this designation.

[0183] When the power supply demand of various electrical devices in the vehicle does not meet the first power supply condition, appropriate power supply equipment can be selected to supply power to the electrical devices based on whether the second power supply condition is met, thereby improving power supply efficiency while minimizing energy waste.

[0184] According to some embodiments of this application, the second controller 230 is also configured to send a second output command to the power supply control system 100.

[0185] The second controller 230 can also send a second output command to the power supply control system 100, instructing the voltage conversion module 110 to output converted electrical energy to the electrical device. When the first controller 130 receives the second output command from the battery management unit 12, it will control the voltage conversion module 110 to output converted electrical energy to the electrical device.

[0186] By sending a second output command to the power supply control system, the power supply control system can supply power to the electrical equipment according to the power demand.

[0187] According to some embodiments of this application, the second controller 230 is also configured to receive the converted electrical energy output by the voltage conversion module 110.

[0188] The second controller 230 can also be powered by the power supply control system 100, that is, it receives the converted electrical energy output by the voltage conversion module 110.

[0189] The second controller is configured to be powered by electrical energy output from the voltage conversion module, so that the second controller can still operate normally when the vehicle is in a high-voltage power-off state.

[0190] Based on the same technical concept, embodiments of this application provide a power supply method for a vehicle, used in the power supply system 200 as described in the above embodiments. The power supply method includes: controlling at least one of the power battery device 10, the power supply battery 210, and the DC-DC converter 220 to supply power to the electrical device according to the power supply requirements of the electrical device.

[0191] The power supply method can be executed by the second controller 230. It should be understood that, corresponding to the embodiment of the power supply system 200, the power supply method may also include more embodiments.

[0192] By controlling the power supply to different electrical devices according to their power requirements in the vehicle, power supply efficiency can be improved while minimizing energy waste.

[0193] Based on the same technical concept, this application provides a vehicle including a power supply system 200 as described in the above embodiments.

[0194] A specific embodiment of this application is described below. It should be understood that this specific embodiment is described for illustrative purposes only and should not be construed as limiting the scope of this application.

[0195] As shown in Figure 4, the power battery device 10 includes a power battery 11, a battery management unit 12, and a power supply control system 100. As shown in Figure 2, the power supply control system 100 includes a voltage conversion module 110, a first power module 120, a first controller 130, a first filter module 140, and a second filter module 150.

[0196] The voltage conversion module 110 converts the voltage of the electrical energy output from the power battery 11. A first filter module 140 and a second filter module 150 are connected to the input and output terminals of the voltage conversion module 110, respectively, to achieve power filtering. The first power module 120 supplies power to the first controller 130 based on a first output command. After the first controller 130 starts, it controls the voltage conversion module 110 to output electrical energy to the electrical equipment in the vehicle.

[0197] When the power supply control system 100 needs to be started, a first output command is sent to the power supply control system 100 via a hard-wired signal. In this example, the power supply control system 100 may be configured with a low-voltage signal input port, to which the first output command is sent. The low-voltage signal input port is connected to the first power module 120 and / or the first controller 130, so that the first output command can be transmitted to the first power module 120 and / or the first controller 130. According to the first output command, the first power module 120 will output electrical energy to the first controller 130, and the first controller 130 will start after receiving the electrical energy.

[0198] After the first controller 130 is started, it sends a lock command to the first power module 120 so that the first power module 120 can continuously output power.

[0199] The first controller 130 detects the status of the power supply control system 100 and the power battery device 10. If the status of the power supply control system 100 does not meet the first status condition and / or the status of the power battery device 10 does not meet the second status condition, it generates first fault information and / or second fault information and reports it to the BMU via a hard-wired signal or a CAN bus signal. If the status of the power supply control system 100 meets the first status condition and the status of the power battery device 10 meets the second status condition, the first power module 120 continues to output power to the first controller 130. At this time, the first power module 120 is in standby mode. In this example, if the second output command is not received after 1 minute, the first power module 120 is controlled to stop outputting power. In another example, the first controller 130 stops sending lock commands. If the first output command is still not received after 1 minute, the first power module 120 stops outputting power.

[0200] When the power supply control system 100 needs to supply power to the electrical equipment, it sends a second output command to the power supply control system 100 via a CAN bus signal. The first controller 130 controls the voltage conversion module 110 to output the converted electrical energy to the electrical equipment.

[0201] During the output of electrical energy by the voltage conversion module 110, the first controller 130 continuously monitors the status of the power supply control system 100 and the power battery device 10. If the status of the power supply control system 100 does not meet the first status condition and / or the status of the power battery device 10 does not meet the second status condition, the power supply control system 100 (including its constituent modules) attempts to restart. After three restarts, if the status of the power supply control system 100 still does not meet the first status condition and / or the status of the power battery device 10 still does not meet the second status condition, the voltage conversion module 110 stops outputting electrical energy and generates first fault information and / or second fault information. After the voltage conversion module 110 stops outputting electrical energy, the first power module 120 continues to output electrical energy to the first controller 130. At this time, the first power module 120 is also in standby mode. In this example, the first controller 130 will stop sending lock commands. If no first output command is received after 1 minute, the first power module 120 stops outputting electrical energy and enters a power-down state.

[0202] Upon receiving the first shutdown command, the first controller 130 controls the voltage conversion module 110 to stop outputting power and stops sending lock commands. If no first output command is received after 1 minute, the first power module 120 stops outputting power, and the first controller 130 enters sleep mode. If the first and second output commands are received, the controller restarts the voltage conversion module 110 to output power.

[0203] When the power supply requirements of the electrical equipment in the vehicle meet the first power supply condition, the first controller 130 controls the voltage conversion module 110 to output the converted electrical energy according to the power supply requirements of the electrical equipment. The power supply control system 100 then supplies power to the electrical equipment.

[0204] The battery management unit 12 determines whether the vehicle containing the power battery is in a high-voltage power-off state. If it is in a high-voltage power-off state, it sends a first output command to the power supply control system 100 to start the power supply control system 100. If it is not in a high-voltage power-off state, but has obtained first status information, such as receiving vehicle collision information or a fault in the DC-DC converter 220, it also sends a first output command to the power supply control system 100.

[0205] As shown in Figure 5, the vehicle's power supply system 200 includes a power battery device 10, a power supply battery 210, a DC-DC converter 220, and a second controller 230.

[0206] When the power supply requirements of the electrical equipment do not meet the first power supply condition but meet the second power supply condition, the control power supply battery 210 supplies power to the electrical equipment.

[0207] When the power supply requirements of the electrical equipment do not meet the first power supply condition or the second power supply condition, the DC-DC converter 220 is controlled to supply power to the electrical equipment.

[0208] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A power supply control system, disposed inside a power battery device, comprising: The voltage conversion module is configured to convert the electrical energy output from the power battery in the power battery device into voltage and output the converted electrical energy. The first power module is configured to output electrical energy based on a first output command, the first output command being used to instruct the power supply control system to start. as well as A first controller, connected to the first power module, is configured to: Receive electrical energy output from the first power module; as well as In response to receiving a second output command, the voltage conversion module is controlled to output the converted electrical energy, and the second output command is used to instruct the power supply control system to output electrical energy.

2. The power supply control system according to claim 1, wherein, The first controller is also configured to: In response to receiving the first shutdown command, the voltage conversion module is controlled to stop outputting the converted electrical energy.

3. The power supply control system according to claim 2, wherein, The first controller is also configured to: Before the voltage conversion module outputs the converted electrical energy in response to receiving the second output command: In response to at least one of the following conditions, the first power module is controlled to stop outputting power to the first controller: The first shutdown command has been received; The first output command was not received within the first time period after the power output from the first power module was received; The second output command was not received within the second time period after the first power module output electrical energy was received.

4. The power supply control system according to claim 2 or 3, wherein, The first controller is also configured to: After the voltage conversion module stops outputting converted electrical energy in response to receiving the first shutdown command: In response to not receiving the first output command within the third time period, the first power module is controlled to stop outputting power to the first controller.

5. The power supply control system according to any one of claims 2-4, wherein, The first controller is also configured to: Determine whether the state of the power supply control system meets the first state condition; In response to the power supply control system not meeting the first state condition, a first fault information is generated; Determine whether the state of the power battery device satisfies the second state condition; as well as In response to the fact that the state of the power battery device does not meet the second state condition, a second fault information is generated.

6. The power supply control system according to claim 5, wherein, The first controller is also configured to: In response to the power supply control system not meeting the first state condition and / or the power battery device not meeting the second state condition: Control the voltage conversion module to stop outputting the converted electrical energy.

7. The power supply control system according to claim 6, wherein, The first controller is also configured to: After the voltage conversion module stops outputting the converted electrical energy: In response to at least one of the following conditions, the first power module is controlled to stop outputting power to the first controller: The first shutdown command has been received; In response to the failure to receive the first output command within the fourth time period, the first power module is controlled to stop outputting power to the first controller.

8. The power supply control system according to any one of claims 2-7, wherein, The first controller is also configured to: After receiving the electrical energy output from the first power module: A lock command is sent to the first power module, the lock command being used to instruct the first power module to output power to the first controller.

9. The power supply control system according to claim 8, wherein, The first controller is also configured to: After the voltage conversion module stops outputting converted electrical energy in response to receiving the first shutdown command: In response to the failure to receive the first output command within the fifth time period, the sending of the lock command to the first power module is stopped.

10. The power supply control system according to any one of claims 1-9, wherein, The power supply control system further includes at least one of the following: The first filtering module, connected to the voltage conversion module, is configured to filter the electrical energy output by the power battery. The second filtering module, connected to the voltage conversion module, is configured to filter the converted electrical energy output by the voltage conversion module.

11. The power supply control system according to any one of claims 1-10, wherein, The first controller is also configured to: Determine whether the power supply requirements of the electrical equipment connected to the power supply control system meet the first power supply condition.

12. The power supply control system according to claim 11, wherein, The first controller is also configured to: In response to the power supply requirements of the electrical equipment connected to the power supply control system meeting the first power supply condition, the voltage conversion module is controlled to output the converted electrical energy according to the power supply requirements.

13. A power supply control method, used in a power supply control system as described in any one of claims 1-12, comprising: Receive electrical energy output from the first power module; as well as In response to receiving a second output command, the voltage conversion module is controlled to output the converted electrical energy, and the second output command is used to instruct the power supply control system to output electrical energy.

14. A power battery device, comprising: The power supply control system as described in any one of claims 1-12; The power battery is connected to the power supply control system. as well as The battery management unit is configured as follows: Based on the state of the power battery device, the first output command is sent to the power supply control system.

15. The power battery device according to claim 14, wherein, Sending the first output command to the power supply control system based on the state of the power battery device includes: In response to acquiring the first status information, the first output command is sent to the power supply control system.

16. The power battery device according to claim 14 or 15, wherein, The battery management unit is also configured to: Receives the converted electrical energy output from the voltage conversion module.

17. The power battery device according to any one of claims 14-16, wherein, The battery management unit is also configured to: Send the second output command to the power supply control system.

18. The power battery device according to any one of claims 14-17, wherein, The battery management unit is also configured to: Determine whether the vehicle containing the power battery device is in a high-voltage energized state; and In response to the vehicle being in the high-voltage off state, the first output command is sent to the power supply control system.

19. A power supply system for a vehicle, comprising: The power battery device as described in any one of claims 14-18; A power supply battery is configured to supply power to electrical equipment in the vehicle; A DC-DC converter, connected to the power battery device, is configured to convert the electrical energy output from the power battery in the power battery device into voltage and output the converted electrical energy. as well as The second controller is configured as follows: According to the power supply requirements of the electrical equipment, at least one of the power battery device, the power supply battery, and the DC-DC converter is controlled to supply power to the electrical equipment.

20. The power supply system according to claim 19, wherein, The step of controlling at least one of the power battery device, the power supply battery, and the DC-DC converter to supply power to the electrical equipment according to the power supply requirements of the electrical equipment includes: In response to the fact that the power supply requirements of the electrical equipment do not meet the first power supply condition, determine whether the power supply requirements meet the second power supply condition; In response to the power supply requirement meeting the second power supply condition, the power supply battery is controlled to supply power to the electrical device; and In response to the power supply requirement not meeting the second power supply condition, the DC-DC converter is controlled to supply power to the electrical equipment.

21. The power supply system according to claim 19 or 20, wherein, The second controller is also configured to: Send the second output command to the power supply control system.

22. The power supply system according to any one of claims 19-21, wherein, The second controller is also configured to: Receives the converted electrical energy output from the voltage conversion module.

23. A method for supplying power to a vehicle, used in a power supply system as described in any one of claims 19-22, comprising: According to the power supply requirements of the electrical equipment, at least one of the power battery device, the power supply battery, and the DC-DC converter is controlled to supply power to the electrical equipment.

24. A vehicle comprising: The power supply system as described in any one of claims 19-22.

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