High-voltage power distribution topology, voltage control method and device, and electronic equipment

Abstract

The present disclosure provides a voltage control method, comprising: a vehicle control unit (VCU) confirming a voltage control type of a vehicle; the VCU sending a voltage control instruction to a battery management system (BMS) and an integrated control unit (ICU) based on the voltage control type of the vehicle and a positive temperature coefficient (PTC) type, so that the BMS and the ICU adjust the switching states of a main negative contactor, a branch contactor, a pre-charging contactor and a main positive contactor based on the voltage control instruction, and realize high-voltage power-on control or high-voltage power-off control of the vehicle.

Description

Technical Field

[0001] This disclosure relates to the field of automotive technology, and in particular to a high-voltage power distribution topology, voltage control method, device, and electronic equipment. Background Technology

[0002] New energy commercial vehicles equipped with cab electric heating functions generally utilize a positive temperature coefficient (PCT) high-voltage power supply. Currently, commercial vehicles commonly use ordinary air-cooled PTC heaters, which operate continuously under high voltage. To ensure controllable cab temperature, segmented PTC heaters can also be used, with their operation controlled by a controller after high voltage is applied. However, due to differences in load-side circuits, different vehicles require adaptive matching of their high-voltage power distribution. Summary of the Invention

[0003] This disclosure provides a high-voltage power distribution topology, voltage control method, device, and electronic equipment.

[0004] According to a first aspect of this disclosure, a high-voltage power distribution topology is provided, the topology comprising a power battery, a positive temperature coefficient PTC power distribution branch, a branch contactor, a main negative contactor, a precharge contactor, and a main positive contactor;

[0005] The primary negative contactor is connected in series with the primary stage of the power battery.

[0006] The main positive contactor is connected in series with the power battery; the main positive contactor is connected in parallel with the precharge contactor.

[0007] The PTC power distribution branch is connected to the rear end of the pre-charge contactor; the branch contactor is connected in series with the PTC power distribution branch and is located between the pre-charge contactor and the PTC power distribution branch.

[0008] In the above scheme, the topology also includes an integrated control unit (ICU) and a battery management system (BMS).

[0009] The BMS is used to close or open the main negative contactor based on the received voltage control signal;

[0010] The ICU is used to close or open the main positive contactor, close or open the precharge contactor, and close or open the branch contactor based on the received voltage control signal.

[0011] According to a second aspect of this disclosure, a voltage control method is provided, implemented based on the topology described above, the method comprising:

[0012] The vehicle control unit (VCU) confirms the vehicle's voltage control type;

[0013] Based on the vehicle's voltage control type and positive temperature coefficient (PTC) type, the VCU sends voltage control commands to the BMS and ICU, so that the BMS and ICU adjust the switching states of the main negative contactor, branch contactor, precharge contactor, and main positive contactor according to the voltage control commands, thereby realizing high-voltage power-on control or high-voltage power-off control of the vehicle.

[0014] In the above scheme, in response to the VCU confirming that the vehicle's voltage control type is high-voltage power-on control, the VCU sends a first high-voltage command to the BMS to cause the BMS to close the main negative contactor;

[0015] The VCU sends corresponding voltage control commands to the BMS and ICU based on the vehicle's PTC type.

[0016] In the above scheme, the VCU sends corresponding voltage control commands to the BMS and ICU based on the vehicle's PTC type, including:

[0017] In response to the vehicle's PTC type being a segmented PTC, the VCU sends a first closing command to the ICU, so that the ICU controls the branch contactor to close based on the first closing command;

[0018] The VCU sends a second high-voltage command to the ICU, so that the ICU controls the pre-charge contactor and the main positive contactor to open or close.

[0019] In the above scheme, the VCU sends corresponding voltage control commands to the BMS and ICU based on the vehicle's PTC type, including:

[0020] In response to the vehicle's PTC type being a non-segmented PTC, the VCU sends a third high-voltage command to the ICU, causing the ICU to control the pre-charge contactor and the main positive contactor to open or close.

[0021] In the above scheme, the ICU controls the pre-charge contactor and the main positive contactor to open or close, including:

[0022] Close the pre-charge contactor;

[0023] When the bus voltage in the vehicle meets the first condition, the main positive contactor is closed and the precharge contactor is opened.

[0024] In the above scheme, the VCU sends voltage control commands to the Battery Management System (BMS) and the Integrated Control Unit (ICU) based on the vehicle's voltage control type and positive temperature coefficient (PTC) type, including:

[0025] In response to the VCU confirming that the vehicle's voltage control type is high-voltage under-voltage control, the VCU sends the corresponding voltage control command to the BMS and ICU based on the vehicle's PTC type.

[0026] In the above scheme, the VCU sends corresponding voltage control commands to the BMS and ICU based on the vehicle's PTC type, including:

[0027] In response to the VCU confirming that the PTC type of the vehicle is a segmented PTC, the VCU sends a first high-voltage command to the ICU, so that the ICU disconnects the main positive contactor based on the first high-voltage command;

[0028] The VCU sends a second disconnect command to the ICU, causing the ICU to disconnect the branch contactor;

[0029] The VCU sends a second high-voltage command to the BMS to cause the BMS to disconnect the main negative contactor.

[0030] In the above scheme, the VCU sends corresponding voltage control commands to the BMS and ICU based on the vehicle's PTC type, including:

[0031] In response to the VCU confirming that the PTC type of the vehicle is a non-segmented PTC and the VCU confirming that the branch contactor is open, the VCU sends a third high-voltage command to the ICU to cause the ICU to control the main positive contactor to open.

[0032] The VCU sends a fourth high-voltage command to the BMS to cause the BMS to disconnect the main negative contactor.

[0033] According to a third aspect of this disclosure, a voltage control device is provided, applied to a VCU, implemented based on the topology described in the first aspect above, the device comprising:

[0034] The confirmation unit is used to confirm the voltage control type of the vehicle.

[0035] The transmitting unit is used by the VCU to send voltage control commands to the BMS and ICU based on the voltage control type and PTC type of the vehicle, so that the BMS and ICU can adjust the switching states of the main negative contactor, branch contactor, precharge contactor and main positive contactor based on the voltage control commands, so as to realize the high voltage power-on control or high voltage power-off control of the vehicle.

[0036] According to a fourth aspect of this disclosure, an electronic device is provided, comprising:

[0037] At least one processor; and

[0038] A memory communicatively connected to the at least one processor; wherein,

[0039] The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the methods described in this disclosure.

[0040] According to a fifth aspect of this disclosure, a non-transitory computer-readable storage medium is provided storing computer instructions for causing the computer to perform the methods described in this disclosure.

[0041] The high-voltage power distribution topology and voltage control method disclosed herein, based on the topology and the vehicle's voltage control type and PTC type, send voltage control commands to the BMS and ICU, enabling the BMS and ICU to adjust the switching states of the main negative contactor, branch contactor, pre-charge contactor, and main positive contactor based on the voltage control commands, thereby achieving high-voltage power-on or high-voltage power-off control of the vehicle. This method is compatible with voltage control for vehicles of different PTC types, reducing adaptive adjustments needed to accommodate differences in load-side circuits.

[0042] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0043] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0044] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0045] Figure 1 A schematic diagram of an optional high-voltage power distribution topology provided in an embodiment of this disclosure is shown;

[0046] Figure 2 A schematic diagram of an optional flow of the voltage control method provided in an embodiment of this disclosure is shown;

[0047] Figure 3 A schematic diagram of another optional process for the high-voltage control method provided in this embodiment of the present disclosure is shown;

[0048] Figure 4 A schematic diagram of another optional process of the high-voltage control method provided in this disclosure embodiment is shown;

[0049] Figure 5 A schematic diagram of an optional structure of the voltage control device provided in an embodiment of this disclosure is shown;

[0050] Figure 6 A schematic diagram of the composition structure of an electronic device according to an embodiment of the present disclosure is shown. Detailed Implementation

[0051] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0052] Depending on the vehicle configuration, the type of PTC used to implement cab heating in new energy commercial vehicles also varies. Ordinary non-segmented PTCs start working after receiving a high-voltage DC connection, and power output is activated when the load is connected. Segmented PTCs have a high-voltage control unit; after the DC power supply is connected to the PTC's high-voltage control unit, the control unit activates, and the PTC load is activated, resulting in power output. To adapt to different types of PTC loads, the high-voltage power distribution topology needs to be adjusted accordingly, leading to multiple states for the high-voltage power distribution control unit. This hinders the platform-based standardization of vehicle components and increases component maintenance costs.

[0053] To address the shortcomings in related technologies, this disclosure provides a high-voltage power distribution topology and voltage control method, enabling the vehicle controller to optimize the high-voltage power-on / off control logic configuration based on the topology, and allowing the same high-voltage power distribution topology to be compatible with different PTC types.

[0054] In this embodiment, the high-voltage power supply circuit of the PTC is connected to the rear end of the high-voltage pre-charging circuit of the vehicle, and a contactor K3 is connected in series in the PTC power supply branch. The VCU configures different high-voltage power-on and power-off logic according to the type of PTC selected in the vehicle, and determines the closing and opening sequence of the branch contactor and the high-voltage main positive power-on contactor (including the pre-charging contactor and the main positive contactor).

[0055] The high-voltage power distribution topology provided in this disclosure will be described in detail below. Figure 1 A schematic diagram of an optional high-voltage power distribution topology provided in an embodiment of this disclosure is shown.

[0056] like Figure 1As shown, the topology includes a power battery, BMS, ICU, and PTC power distribution branch.

[0057] The PTC power distribution branch includes segmented PTC branch and non-segmented PTC branch; depending on the vehicle's PTC type, the VCU can control the switching on or off of the segmented PTC branch and non-segmented PTC branch.

[0058] The power battery is used to supply power to the load. The first stage (negative terminal) of the power battery outputs negative direct current (DC), and the subsequent stage (positive terminal) of the power battery outputs positive direct current (DC). The power battery is connected to the BMS, which includes a main negative contactor K0. The ICU is connected to the BMS, and the ICU includes a main positive contactor K2, a pre-charge contactor K1, and a branch contactor K3.

[0059] In some embodiments, the BMS is used to close or open the main negative contactor based on the received voltage control signal; the ICU is used to close or open the main positive contactor, close or open the precharge contactor, and close or open the branch contactor based on the received voltage control signal.

[0060] The primary stage of the power battery is connected in series with the main negative contactor K0; the secondary stage of the power battery is connected in series with the main positive contactor K2; the main positive contactor K2 is connected in parallel with the pre-charge contactor K1; the PTC distribution branch is connected to the pre-charge contact circuit (including the pre-charge contactor K1); the branch contactor K3 is connected in series with the PTC distribution branch and is located between the pre-charge contactor K1 and the PTC distribution branch.

[0061] In some embodiments, the topology may further include an air conditioning controller (AC), a DCAC_S, a DC-AC converter (for brake air pump controller) (DC-AC Converter_ForBrake, DCAC_B), a DC-AC converter (DCAC), and a motor control unit (MCU).

[0062] Figure 2 A schematic flowchart of an optional voltage control method provided in an embodiment of this disclosure is shown, and the steps will be described accordingly.

[0063] Step S201: The vehicle controller confirms the vehicle's voltage control type.

[0064] In some embodiments, the voltage control method can be implemented by a vehicle controller. The voltage control type of the vehicle may include high-voltage power-on control and high-voltage power-off control.

[0065] In practice, the VCU can determine the vehicle's voltage control type by judging whether the vehicle meets the conditions for high voltage or low voltage.

[0066] In step S202, the VCU sends voltage control commands to the battery management system and integrated control unit based on the vehicle's voltage control type and positive temperature coefficient type.

[0067] In some embodiments, the voltage control command is used to cause the BMS and ICU to adjust the switching states of the main negative contactor, branch contactor, precharge contactor and main positive contactor based on the voltage control command; specifically, it may include causing the BMS to adjust the switching state of the main negative contactor based on the voltage control command; and causing the ICU to adjust the switching states of the branch contactor, precharge contactor and main positive contactor.

[0068] In some embodiments, the voltage control type and positive temperature coefficient type are different, the method by which the VCU controls the voltage on or off the vehicle is also different, and consequently the voltage control commands sent by the VCU to the BMS and ICU are also different.

[0069] In specific implementation, in response to the voltage control type being high-voltage power-on control and the vehicle's PTC type being a segmented PTC, the voltage control command may include a first high-voltage power-on command, a first closing command, and a second high-voltage power-on command.

[0070] The first high-voltage command is used to instruct the BMS to close the main negative contactor; the first closing command is used to instruct the ICU to close the branch contactor; the second high-voltage command is used to instruct the ICU to close the pre-charge contactor, and when the bus voltage in the vehicle meets the first condition, close the main positive contactor and open the pre-charge contactor.

[0071] In specific implementation, in response to the voltage control type being high-voltage power-on control and the vehicle's PTC type being a non-segmented PTC, the voltage control command may include a first high-voltage power-on command and a third high-voltage power-on command.

[0072] The first high-voltage command is used to instruct the BMS to close the main negative contactor; the third high-voltage command is used to instruct the ICU to close the pre-charge contactor, and when the bus voltage in the vehicle meets the first condition, close the main positive contactor and open the pre-charge contactor.

[0073] In specific implementation, in response to the voltage control type being high-voltage down-electric control and the vehicle's PTC type being a segmented PTC, the voltage control command may include a first down-high voltage command, a second disconnect command, and a second down-high voltage command.

[0074] Wherein, the first high-voltage command is used to instruct the ICU to disconnect the main positive contactor; the second disconnect command is used to instruct the ICU to disconnect the branch contactor; and the second high-voltage command is used to instruct the BMS to disconnect the main negative contactor.

[0075] In specific implementation, in response to the voltage control type being high-voltage down-control and the vehicle's PTC type being a non-segmented PTC, the voltage control command may include: a third high-voltage down-control command and a fourth high-voltage down-control command. Optionally, the voltage control command may further include a third disconnect command, which is used to disconnect the branch contactor before the third and fourth high-voltage down-control commands.

[0076] The third high-voltage command is used to instruct the ICU to disconnect the main positive contactor; the fourth high-voltage command is used to instruct the BMS to disconnect the main negative contactor.

[0077] Thus, the high-voltage power distribution topology and voltage control method provided in this disclosure, based on the topology and the vehicle's voltage control type and PTC type, send voltage control commands to the BMS and ICU, enabling the BMS and ICU to adjust the switching states of the main negative contactor, branch contactor, pre-charge contactor, and main positive contactor based on the voltage control commands, thereby achieving high-voltage power-on or high-voltage power-off control of the vehicle. This method is compatible with voltage control for vehicles with different PTC types, reducing adaptive adjustments needed to accommodate differences in load-side circuits.

[0078] Figure 3 A schematic diagram of another alternative process for the high-voltage control method provided in this disclosure is shown, and will be described step by step.

[0079] Figure 3 The diagram shows the process of high-voltage power-on using both segmented and non-segmented PTCs when the voltage control type is high-voltage power-on control.

[0080] In step S301, the VCU sends the first high-voltage command to the BMS.

[0081] In some embodiments, the VCU confirms whether the vehicle meets the high-voltage power-on condition. If the vehicle meets the high-voltage power-on condition, the VCU sends a first high-voltage power-on command to the BMS. That is, in response to the vehicle meeting the high-voltage power-on condition, the VCU confirms that the vehicle's voltage control type is high-voltage power-on control.

[0082] In some embodiments, after receiving the first high-voltage command, the BMS can also confirm whether the vehicle meets the high-voltage conditions. In response to the BMS confirming that the vehicle meets the high-voltage conditions, it controls the closing of the main negative contactor K0.

[0083] In step S302, the VCU determines the PTC type of the vehicle.

[0084] In some embodiments, the PTC type may include a segmented PTC and a non-segmented PTC; if the vehicle's PTC type is a segmented PTC, then step S303 is executed; or, if the vehicle's PTC type is a non-segmented PTC, then step S304 is executed.

[0085] In step S303, the VCU sends the first closure command to the ICU.

[0086] In some embodiments, the VCU sends a first closing command to the ICU to close the branch contactor.

[0087] In step S304, the VCU sends a high-voltage command to the ICU.

[0088] In some embodiments, the high-voltage command in step S304 may be a second high-voltage command or a third high-voltage command.

[0089] In some embodiments, after receiving the high-voltage command, the ICU detects whether the vehicle meets the high-voltage conditions; in response to the ICU confirming that the vehicle meets the high-voltage conditions, it closes the pre-charge contactor based on the high-voltage command; if the bus voltage in the vehicle meets a first condition, it closes the main positive contactor and disconnects the pre-charge contactor. The first condition may include a first threshold value for the bus voltage to rise to the power battery voltage; the first threshold value can be set according to actual needs or experimental results, such as above 80%, 90%, etc.

[0090] Thus, the high-voltage power distribution topology and voltage control method provided in this disclosure, based on the topology and the vehicle's voltage control type and PTC type, send voltage control commands to the BMS and ICU, causing the BMS and ICU to adjust the switching states of the main negative contactor, branch contactor, pre-charge contactor, and main positive contactor based on the voltage control commands, thereby achieving high-voltage power-on control of the vehicle. This method is compatible with voltage control for vehicles of different PTC types, reducing adaptive adjustments needed to accommodate differences in load-side circuits.

[0091] Figure 4 A schematic diagram of another alternative process of the high-voltage control method provided in the embodiments of this disclosure is shown, and will be described in terms of each step.

[0092] Figure 4 The diagram shows the process of high-voltage power-on using a segmented PTC and a non-segmented PTC when the voltage control type is high-voltage power-off control.

[0093] Step S401: The VCU determines the PTC type of the vehicle.

[0094] In some embodiments, the VCU sends a high-voltage load stop enable signal to cause the high-voltage load drive unit to stop power output.

[0095] In some embodiments, the PTC type may include a segmented PTC and a non-segmented PTC; if the vehicle's PTC type is a segmented PTC, then step S402 is executed; or, if the vehicle's PTC type is a non-segmented PTC, then step S403 is executed.

[0096] In step S402, the VCU sends a first high-voltage command to the ICU.

[0097] In some embodiments, the VCU sends a first high-voltage command to the ICU, causing the ICU to disconnect the main positive contactor and / or disconnect the branch contactor based on the first high-voltage command. Then step S405 is executed.

[0098] In step S403, the VCU confirms whether the branch contactor is closed.

[0099] In some embodiments, if the branch contactor is not closed, step S404 is executed; if the branch contactor is closed, the branch contactor is controlled to open.

[0100] In step S404, the VCU sends a third high-pressure command to the ICU.

[0101] In some embodiments, the ICU controls the main positive contactor to disconnect in response to the third high-voltage command.

[0102] In step S405, the VCU sends a high-voltage command to the BMS.

[0103] In some embodiments, the high-voltage command in step S405 may include a second high-voltage command and a fourth high-voltage command.

[0104] In practice, the BMS responds to the high-voltage command by disconnecting the main negative contactor.

[0105] Thus, the high-voltage power distribution topology and voltage control method provided in this disclosure, based on the topology and the vehicle's voltage control type and PTC type, send voltage control commands to the BMS and ICU, enabling the BMS and ICU to adjust the switching states of the main negative contactor, branch contactor, pre-charge contactor, and main positive contactor based on the voltage control commands, thereby achieving high-voltage power-off control of the vehicle. This method is compatible with voltage control for vehicles of different PTC types, reducing adaptive adjustments needed to accommodate differences in load-side circuits.

[0106] Figure 5 A schematic diagram of an optional structure of the voltage control device provided in an embodiment of this disclosure is shown, and will be described in terms of each part.

[0107] In some embodiments, the voltage control device 500 includes a confirmation unit 501 and a transmission unit 502.

[0108] Confirmation unit 501 is used to confirm the voltage control type of the vehicle;

[0109] The transmitting unit 502 is used by the VCU to send voltage control commands to the battery management system (BMS) and integrated control unit (ICU) based on the voltage control type and positive temperature coefficient (PTC) type of the vehicle, so that the BMS and ICU can adjust the switching states of the main negative contactor, branch contactor, precharge contactor and main positive contactor based on the voltage control commands, so as to realize the high voltage power-on control or high voltage power-off control of the vehicle.

[0110] The sending unit 502 is specifically used to respond to the VCU confirming that the voltage control type of the vehicle is high voltage power-on control, and then the VCU sends a first high voltage command to the BMS so that the BMS closes the main negative contactor;

[0111] The VCU sends corresponding voltage control commands to the BMS and ICU based on the vehicle's PTC type.

[0112] The sending unit 502 is specifically used to respond to the vehicle's PTC type being a segmented PTC, in which case the VCU sends a first closing command to the ICU, so that the ICU controls the branch contactor to close based on the first closing command;

[0113] The VCU sends a second high-voltage command to the ICU, so that the ICU controls the pre-charge contactor and the main positive contactor to open or close.

[0114] The sending unit 502 is specifically used to respond to the vehicle's PTC type being a non-segmented PTC, by sending a third high-voltage command to the ICU to cause the ICU to control the pre-charge contactor and the main positive contactor to open or close.

[0115] The transmitting unit 502 is specifically used to close the pre-charge contactor; when the bus voltage in the vehicle meets the first condition, it closes the main positive contactor and opens the pre-charge contactor.

[0116] The sending unit 502 is specifically used to respond to the VCU confirming that the voltage control type of the vehicle is high-voltage power control, and then the VCU sends the corresponding voltage control command to the BMS and ICU based on the PTC type of the vehicle.

[0117] The sending unit 502 is specifically used to respond to the VCU confirming that the PTC type of the vehicle is a segmented PTC, and then the VCU sends a first high-voltage command to the ICU so that the ICU disconnects the main positive contactor based on the first high-voltage command;

[0118] The VCU sends a second disconnect command to the ICU, causing the ICU to disconnect the branch contactor;

[0119] The VCU sends a second high-voltage command to the BMS to cause the BMS to disconnect the main negative contactor.

[0120] The sending unit 502 is specifically used to respond to the VCU confirming that the PTC type of the vehicle is a non-segmented PTC and the VCU confirming that the branch contactor is open, then the VCU sends a third high-voltage command to the ICU so that the ICU controls the main positive contactor to open.

[0121] The VCU sends a fourth high-voltage command to the BMS to cause the BMS to disconnect the main negative contactor.

[0122] According to embodiments of this disclosure, this disclosure also provides an electronic device and a readable storage medium.

[0123] Figure 6 A schematic block diagram of an example electronic device 800 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0124] like Figure 6As shown, the electronic device 800 includes a computing unit 801, which can perform various appropriate actions and processes based on a computer program stored in a read-only memory (ROM) 802 or a computer program loaded from a storage unit 808 into a random access memory (RAM) 803. The RAM 803 may also store various programs and data required for the operation of the electronic device 800. The computing unit 801, ROM 802, and RAM 803 are interconnected via a bus 804. An input / output (I / O) interface 805 is also connected to the bus 804.

[0125] Multiple components in electronic device 800 are connected to I / O interface 805, including: input unit 806, such as keyboard, mouse, etc.; output unit 807, such as various types of displays, speakers, etc.; storage unit 808, such as disk, optical disk, etc.; and communication unit 809, such as network card, modem, wireless transceiver, etc. Communication unit 809 allows electronic device 800 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0126] The computing unit 801 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 801 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 801 performs the various methods and processes described above, such as voltage control methods. For example, in some embodiments, the voltage control method may be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 808. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 800 via ROM 802 and / or communication unit 809. When the computer program is loaded into RAM 803 and executed by the computing unit 801, one or more steps of the voltage control method described above may be performed. Alternatively, in other embodiments, the computing unit 801 may be configured to perform voltage control methods by any other suitable means (e.g., by means of firmware).

[0127] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0128] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0129] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0130] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0131] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as a data server), or computing systems that include middleware components (e.g., an application server), or computing systems that include frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), and the Internet.

[0132] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact via communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other. Servers can be cloud servers, servers in distributed systems, or servers incorporating blockchain technology.

[0133] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0134] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0135] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A high-voltage power distribution topology, characterized in that, The topology includes a power battery, a positive temperature coefficient PTC distribution branch, a branch contactor, a main negative contactor, a pre-charge contactor, and a main positive contactor; The primary negative contactor is connected in series with the primary stage of the power battery. The main positive contactor is connected in series with the power battery; the main positive contactor is connected in parallel with the precharge contactor. The PTC power distribution branch is connected to the rear end of the precharge contactor; the branch contactor is connected in series with the PTC power distribution branch and is located between the precharge contactor and the PTC power distribution branch; The vehicle control unit (VCU) confirms the vehicle's voltage control type; Based on the vehicle's voltage control type and positive temperature coefficient (PTC) type, the VCU sends voltage control commands to the Battery Management System (BMS) and Integrated Control Unit (ICU), so that the BMS and ICU adjust the switching states of the main negative contactor, branch contactor, precharge contactor, and main positive contactor according to the voltage control commands, thereby realizing high-voltage power-on control or high-voltage power-off control of the vehicle. The VCU sends voltage control commands to the Battery Management System (BMS) and Integrated Control Unit (ICU) based on the vehicle's voltage control type and positive temperature coefficient (PTC) type, including: In response to the VCU confirming that the vehicle's voltage control type is high-voltage power-on control, the VCU sends a first high-voltage command to the BMS to cause the BMS to close the main negative contactor; The VCU sends corresponding voltage control commands to the BMS and ICU based on the vehicle's PTC type. Based on the vehicle's PTC type, the VCU sends corresponding voltage control commands to the BMS and ICU, including: In response to the vehicle's PTC type being a segmented PTC, the VCU sends a first closing command to the ICU, so that the ICU controls the branch contactor to close based on the first closing command; The VCU sends a second high-voltage command to the ICU, so that the ICU controls the pre-charge contactor and the main positive contactor to open or close.

2. The topology according to claim 1, characterized in that, The topology also includes an integrated control unit (ICU) and a battery management system (BMS); The BMS is used to close or open the main negative contactor based on the received voltage control signal; The ICU is used to close or open the main positive contactor, close or open the precharge contactor, and close or open the branch contactor based on the received voltage control signal.

3. A voltage control method, characterized in that, Based on the topology described in claim 1 or 2, the method includes: The vehicle control unit (VCU) confirms the vehicle's voltage control type; Based on the vehicle's voltage control type and positive temperature coefficient (PTC) type, the VCU sends voltage control commands to the Battery Management System (BMS) and Integrated Control Unit (ICU), causing the BMS and ICU to adjust the switching states of the main negative contactor, branch contactor, pre-charge contactor, and main positive contactor to achieve high-voltage power-on or high-voltage power-off control of the vehicle. The VCU sends voltage control commands to the BMS and ICU based on the vehicle's voltage control type and PTC type, including: In response to the VCU confirming that the vehicle's voltage control type is high-voltage power-on control, the VCU sends a first high-voltage command to the BMS to cause the BMS to close the main negative contactor; The VCU sends corresponding voltage control commands to the BMS and ICU based on the vehicle's PTC type. Based on the vehicle's PTC type, the VCU sends corresponding voltage control commands to the BMS and ICU, including: In response to the vehicle's PTC type being a segmented PTC, the VCU sends a first closing command to the ICU, so that the ICU controls the branch contactor to close based on the first closing command; The VCU sends a second high-voltage command to the ICU, so that the ICU controls the pre-charge contactor and the main positive contactor to open or close.

4. The method according to claim 3, characterized in that, Based on the vehicle's PTC type, the VCU sends corresponding voltage control commands to the BMS and ICU, including: In response to the vehicle's PTC type being a non-segmented PTC, the VCU sends a third high-voltage command to the ICU, causing the ICU to control the pre-charge contactor and the main positive contactor to open or close.

5. The method according to claim 3 or 4, characterized in that, The ICU controls the opening and closing of the pre-charge contactor and the main positive contactor, including: Close the pre-charge contactor; When the bus voltage in the vehicle meets the first condition, the main positive contactor is closed and the precharge contactor is opened.

6. The method according to claim 3, characterized in that, The VCU sends voltage control commands to the Battery Management System (BMS) and Integrated Control Unit (ICU) based on the vehicle's voltage control type and positive temperature coefficient (PTC) type, including: In response to the VCU confirming that the vehicle's voltage control type is high-voltage under-voltage control, the VCU sends the corresponding voltage control command to the BMS and ICU based on the vehicle's PTC type.

7. The method according to claim 6, characterized in that, Based on the vehicle's PTC type, the VCU sends corresponding voltage control commands to the BMS and ICU, including: In response to the VCU confirming that the PTC type of the vehicle is a segmented PTC, the VCU sends a first high-voltage command to the ICU, so that the ICU disconnects the main positive contactor based on the first high-voltage command; The VCU sends a second disconnect command to the ICU, causing the ICU to disconnect the branch contactor; The VCU sends a second high-voltage command to the BMS to cause the BMS to disconnect the main negative contactor.

8. The method according to claim 6, characterized in that, Based on the vehicle's PTC type, the VCU sends corresponding voltage control commands to the BMS and ICU, including: In response to the VCU confirming that the PTC type of the vehicle is a non-segmented PTC and the VCU confirming that the branch contactor is open, the VCU sends a third high-voltage command to the ICU to cause the ICU to control the main positive contactor to open. The VCU sends a fourth high-voltage command to the BMS to cause the BMS to disconnect the main negative contactor.

9. A voltage control device, characterized in that, Applied to a vehicle control unit (VCU), and implemented based on the topology described in claim 1 or 2, the device comprises: The confirmation unit is used to confirm the voltage control type of the vehicle. The transmitting unit is used by the VCU to send voltage control commands to the Battery Management System (BMS) and Integrated Control Unit (ICU) based on the vehicle's voltage control type and positive temperature coefficient (PTC) type, so that the BMS and ICU can adjust the switching states of the main negative contactor, branch contactor, precharge contactor, and main positive contactor based on the voltage control commands, thereby realizing high-voltage power-on control or high-voltage power-off control of the vehicle.

10. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 3-8.

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