Battery management fusion system, intelligent charging method, equipment and storage medium

By sharing a controller for the battery management fusion system, the high hardware cost and complex communication problems caused by the independent management systems of power batteries and low-voltage lithium battery in new energy vehicles are solved, achieving cost reduction and improved communication efficiency.

CN119189787BActive Publication Date: 2025-09-30CHERY NEW ENERGY AUTOMOBILE TECH CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202411559095.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-04
Publication Date
2025-09-30
Estimated Expiration
2044-11-04

AI Technical Summary

Technical Problem

The management systems for power batteries and low-voltage lithium batteries in existing new energy vehicles are two independent control systems, resulting in high hardware costs and complex communications.

Method used

A battery management fusion system is adopted, and the high-voltage control execution unit and the high-voltage battery cell acquisition unit are connected to the power domain controller through a daisy-chain bridge circuit and the CAN bus. The low-voltage sampling control execution unit is connected to the power domain controller through the CAN bus, sharing a controller to realize the management system of the power battery and the low-voltage lithium battery.

Benefits of technology

It reduces hardware costs, communication costs, improves communication efficiency, and realizes efficient communication between power batteries and low-voltage lithium battery management systems.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119189787B_ABST
    Figure CN119189787B_ABST
Patent Text Reader

Abstract

The present application provides a battery management fusion system, an intelligent charging method, a device and a storage medium, which belong to the field of automotive technology. The battery management fusion system includes a high-voltage control execution unit, a high-voltage battery cell acquisition unit, a daisy-chain bridge circuit, a low-voltage sampling control execution unit and a power domain controller; the high-voltage control execution unit and the high-voltage battery cell acquisition unit are respectively connected to the daisy-chain bridge circuit, and the daisy-chain bridge circuit is connected to the power domain controller via the CAN bus; the low-voltage sampling control execution unit is connected to the power domain controller via the CAN bus. The above system enables the vehicle's power battery management system and low-voltage lithium battery management system to share a controller, that is, there is no need to set up separate controllers for each, thereby avoiding resource waste and reducing hardware costs.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present application relates to the field of automotive technology, and in particular to a battery management fusion system, an intelligent charging method, a device, and a storage medium. Background Art

[0002] As the number of new energy vehicles continues to grow, more and more users are choosing them as essential transportation. New energy vehicles include power batteries and low-voltage lithium batteries. Power batteries are used to power the vehicle, acting as an engine. Low-voltage lithium batteries power low-voltage devices in the vehicle, such as the large onboard display. However, current power battery and low-voltage lithium battery management systems in new energy vehicles operate as separate control systems, resulting in an excessive number of control components and high hardware costs. Summary of the Invention

[0003] The embodiments of the present application provide a battery management fusion system, intelligent charging method, device, and storage medium, which enable the vehicle's power battery management system and low-voltage lithium battery management system to share a controller, reducing hardware costs. The technical solution is as follows:

[0004] On the one hand, a battery management fusion system is provided, which is applied to a vehicle. The battery management fusion system includes a high-voltage control execution unit, a high-voltage battery cell acquisition unit, a daisy chain bridge circuit, a low-voltage sampling control execution unit, and a power domain controller;

[0005] The high-voltage battery cell acquisition unit is used to collect operating information of the vehicle's power battery, the high-voltage control execution unit is used to control the operation of the power battery, and the low-voltage sampling control execution unit is used to collect operating information of the vehicle's low-voltage lithium battery and control the operation of the low-voltage lithium battery;

[0006] The high-voltage control execution unit and the high-voltage battery cell acquisition unit are respectively connected to the daisy-chain bridge circuit, and the daisy-chain bridge circuit is communicatively connected to the power domain controller via a CAN bus;

[0007] The low-voltage sampling control execution unit is communicatively connected to the power domain controller via the CAN bus.

[0008] In some embodiments, the battery management fusion system further includes a first transformer and a second transformer;

[0009] The high-voltage control execution unit and the high-voltage battery cell acquisition unit are respectively connected to the daisy chain bridge circuit, including:

[0010] The high-voltage control execution unit is connected to the daisy-chain bridge circuit via the first transformer, and the first transformer is used to isolate the sending signal and the receiving signal of the high-voltage control execution unit;

[0011] The high-voltage battery cell acquisition unit is connected to the daisy-chain bridge circuit via the second transformer, and the second transformer is used to isolate the sending signal and the receiving signal of the high-voltage battery cell acquisition unit.

[0012] In some embodiments, the battery management fusion system further includes a first CAN chip and a second CAN chip;

[0013] The daisy chain bridge circuit is communicatively connected to the power domain controller via a CAN bus, and includes:

[0014] The daisy chain bridge circuit is connected to the CAN bus via the first CAN chip, and the CAN bus is connected to the power domain controller;

[0015] The low-voltage sampling control execution unit is communicatively connected to the power domain controller via the CAN bus, and includes:

[0016] The low-voltage sampling control execution unit is connected to the CAN bus through the second CAN chip, and the CAN bus is connected to the power domain controller.

[0017] In some embodiments, the power domain controller includes a control chip, a power supply circuit, and a third CAN chip, wherein the power supply circuit is used to connect or disconnect the power battery from supplying power to the vehicle, and the third CAN chip is communicatively connected to the first CAN chip via the CAN bus;

[0018] The control chip is used to send a first control signal to the third CAN chip, where the first control signal is used to instruct the collection of operating information of the power battery or control the operation of the power battery;

[0019] The third CAN chip is used to send the first control signal to the first CAN chip through the CAN bus;

[0020] The first CAN chip is used to send the first control signal to the daisy chain bridge circuit;

[0021] The daisy chain bridge circuit is used to perform signal conversion on the first control signal, and when the operation indicated by the first control signal is an operation executable by the high-voltage control execution unit, the converted first control signal is sent to the high-voltage control execution unit; when the operation indicated by the first control signal is an operation executable by the high-voltage battery cell acquisition unit, the converted first control signal is sent to the high-voltage battery cell acquisition unit.

[0022] In some embodiments, the power domain controller includes a control chip, a power supply circuit, and a third CAN chip, wherein the power supply circuit is used to connect or disconnect the low-voltage lithium battery from supplying power to the vehicle, and the third CAN chip is communicatively connected to the second CAN chip via the CAN bus;

[0023] The control chip is used to send a second control signal to the third CAN chip, where the second control signal is used to instruct the collection of operating information of the low-voltage lithium battery or to control the operation of the low-voltage lithium battery;

[0024] The third CAN chip is used to send the second control signal to the second CAN chip through the CAN bus;

[0025] The second CAN chip is used to send the second control signal to the low-voltage sampling control execution unit.

[0026] In some embodiments, the power domain controller includes a control chip, which is a multi-core chip including a first core and a second core;

[0027] The daisy chain bridge circuit is communicatively connected to the power domain controller via a CAN bus, and includes:

[0028] The daisy chain bridge circuit is communicatively connected to the first core in the control chip via the CAN bus;

[0029] The low-voltage sampling control execution unit is communicatively connected to the power domain controller via the CAN bus, and includes:

[0030] The low-voltage sampling control execution unit is communicatively connected to the second core in the control chip via the CAN bus.

[0031] In some embodiments, when the second control signal from the second core is used to instruct to collect the remaining power of the low-voltage lithium battery, the low-voltage sampling control execution unit is used to collect the remaining power of the low-voltage lithium battery based on the second control signal, and send the remaining power of the low-voltage lithium battery to the second core through the CAN bus;

[0032] The second core is used to receive the remaining power and, when the remaining power is lower than a preset power, send a power replenishment signal to the first core, wherein the power replenishment signal is used to instruct the low-voltage lithium battery to be recharged;

[0033] The first core is used to receive the power replenishment signal and send the power replenishment signal to the daisy chain bridge circuit through the CAN bus;

[0034] The daisy chain bridge circuit is used to perform signal conversion on the supplementary power signal, so as to convert the supplementary power signal from a signal suitable for CAN communication into a signal suitable for daisy chain communication, and send the converted supplementary power signal to the high-voltage control execution unit;

[0035] The high-voltage control execution unit is used to receive the power replenishment signal and, based on the power replenishment signal, control the power battery to replenish the low-voltage lithium battery.

[0036] On the other hand, an intelligent charging method is provided, which is applied to a battery management fusion system of a vehicle. The battery management fusion system includes a high-voltage control execution unit, a daisy-chain bridge circuit, a low-voltage sampling control execution unit, and a power domain controller. The power domain controller includes a control chip, which is a multi-core chip including a first core and a second core. The method includes:

[0037] When the vehicle is in a starting state, a control signal is sent to the low-voltage sampling control execution unit through the second core, wherein the control signal is used to instruct to collect the remaining power of the low-voltage lithium battery of the vehicle, and the second core is communicatively connected to the low-voltage sampling control execution unit through the CAN bus;

[0038] The low-voltage sampling control execution unit collects the remaining power of the low-voltage lithium battery based on the control signal, and sends the remaining power of the low-voltage lithium battery to the second core;

[0039] When the remaining power is lower than the preset power, a power replenishment signal is sent to the first core through the second core, wherein the power replenishment signal is used to instruct the low-voltage lithium battery to be recharged;

[0040] sending the power replenishment signal to the daisy-chain bridge circuit via the first core, wherein the daisy-chain bridge circuit is communicatively connected to the first core via a CAN bus;

[0041] Performing signal conversion on the supplementary power signal through the daisy chain bridge circuit to convert the supplementary power signal from a signal suitable for CAN communication to a signal suitable for daisy chain communication, and sending the converted supplementary power signal to the high-voltage control execution unit;

[0042] The high-voltage control execution unit controls the power battery to supplement the low-voltage lithium battery based on the converted supplementary power signal.

[0043] In another aspect, an electronic device is provided, which includes a processor and a memory, wherein the memory is used to store at least one computer program, and the at least one computer program is loaded and executed by the processor to implement the intelligent power replenishment method in the embodiment of the present application.

[0044] On the other hand, a computer-readable storage medium is provided, which is used to store at least one computer program, and the at least one computer program is loaded and executed by a processor to implement the intelligent power replenishment method in the embodiment of the present application.

[0045] An embodiment of the present application provides a battery management fusion system. By connecting the high-voltage control execution unit and the high-voltage battery cell acquisition unit to the power domain controller through a daisy-chain bridge circuit and a CAN bus, and connecting the low-voltage sampling control execution unit to the power domain controller through a CAN bus, the vehicle's power battery management system and low-voltage lithium battery management system can share a controller, that is, there is no need to set up a separate controller for each. This not only avoids resource waste and reduces hardware costs, but also converts the communication mode of the power battery management system and the low-voltage lithium battery management system from communication between controllers to communication within the shared controller, thereby reducing the communication cost between the power battery management system and the low-voltage lithium battery management system and improving communication efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0047] Figure 1 This is a structural diagram of a battery management fusion system provided according to an embodiment of the present application;

[0048] Figure 2 is a structural diagram of another battery management fusion system provided according to an embodiment of the present application;

[0049] Figure 3 This is a flow chart of an intelligent power replenishment method provided according to an embodiment of the present application;

[0050] Figure 4 This is a schematic diagram of an implementation environment of an intelligent power replenishment method provided according to an embodiment of the present application;

[0051] Figure 5 This is a schematic structural diagram of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0052] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0053] In this application, the terms "first", "second", etc. are used to distinguish identical or similar items with substantially the same effects and functions. It should be understood that there is no logical or temporal dependency between "first", "second", and "nth", nor is there any limitation on the quantity and execution order.

[0054] In the present application, the term "at least one" means one or more, and the term "plurality" means two or more.

[0055] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, storage, and display, etc.), and signals involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. For example, the operating information and remaining battery power involved in this application are all obtained with full authorization.

[0056] Figure 1 This is a structural diagram of a battery management fusion system provided according to an embodiment of the present application. Figure 1 The battery management fusion system includes a high-voltage control execution unit 101, a high-voltage battery cell acquisition unit 102, a daisy chain bridge circuit 103, a low-voltage sampling control execution unit 104 and a power domain controller 105.

[0057] Among them, the battery management fusion system is configured in the vehicle to manage the power battery and low-voltage lithium battery in the vehicle. The power battery is used to power the generator in the vehicle to provide power for the vehicle's travel. The low-voltage lithium battery is used to power the low-voltage electrical devices in the vehicle, such as the large on-board screen, on-board speakers, on-board refrigerator, etc. In the battery management fusion system, the high-voltage control execution unit 101 and the high-voltage battery cell acquisition unit 102 are respectively connected to the daisy-chain bridge circuit 103. The daisy-chain bridge circuit 103 is connected to the power domain controller 105 via the CAN (Controller Area Network) bus, and the low-voltage sampling control execution unit 104 is connected to the power domain controller 105 via the CAN bus.

[0058] Among them, the high-voltage control execution unit 101 is used to control the operation of the vehicle's power battery, such as controlling the closing or opening of the relay inside the power battery, performing adhesion detection on the relay, performing current detection and insulation detection on the power battery, etc. The high-voltage battery cell acquisition unit 102 is used to collect the operating information of the vehicle's power battery, such as collecting the single cell voltage, current, operating temperature, etc. of the battery cell inside the power battery. The low-voltage sampling control execution unit 104 is used to collect the operating information of the vehicle's low-voltage lithium battery and control the operation of the low-voltage lithium battery, such as collecting the single cell voltage, current, temperature, etc. of the low-voltage lithium battery, controlling the charging or discharging of the low-voltage lithium battery, performing current detection and insulation detection on the low-voltage lithium battery, etc. The power battery and the low-voltage lithium battery are composed of a plurality of single cells connected in series and parallel. The single cell voltage refers to the voltage of the single cell.

[0059] Among them, the power domain controller 105 can send a first control signal to the daisy-chain bridge circuit 103 via the CAN bus, and the daisy-chain bridge circuit 103 forwards it to the high-voltage control execution unit 101 or the high-voltage battery collection unit 102 to control the high-voltage control execution unit 101 or the high-voltage battery collection unit 102 to perform corresponding operations on the vehicle's power battery. Accordingly, the high-voltage control execution unit 101 or the high-voltage battery collection unit 102 can return the operation results to the power domain controller 105 via the daisy-chain bridge circuit 103 and the CAN bus. Similarly, the power domain controller 105 can also send a second control signal to the low-voltage sampling control execution unit 104 via the CAN bus to control the low-voltage sampling control execution unit 104 to perform corresponding operations on the vehicle's low-voltage lithium battery. Accordingly, the low-voltage sampling control execution unit 104 can return the operation results to the power domain controller 105 via the CAN bus.

[0060] For the daisy chain bridge circuit 103, Figure 1 In the illustrated battery management convergence system, TPL stands for Daisy Chain Communication Protocol, meaning that the high-voltage control execution unit 101, the high-voltage battery cell acquisition unit 102, and the daisy-chain bridge circuit 103 communicate using TPL signals. The daisy-chain bridge circuit 103 can be considered a TPL transceiver, comprising a transmitter (TX) and a receiver (RX). The transmitter (TX) converts the TPL signals from the high-voltage control execution unit 101 and the high-voltage battery cell acquisition unit 102 into CAN signals, enabling the daisy-chain bridge circuit 103 to forward the CAN signals to the power domain controller 105 via the CAN bus. The receiver (RX) converts the CAN signals from the power domain controller 105 into pulse-phase-encoded differential signals, also known as TPL signals, and then forwards the TPL signals to the high-voltage control execution unit 101 or the high-voltage battery cell acquisition unit 102. CAN signals are transmitted differentially over two signal lines (CANH and CANL).

[0061] In some embodiments, see Figure 1 The battery management fusion system also includes a first CAN chip 106 and a second CAN chip 107. Accordingly, the daisy-chain bridge circuit 103 is connected to the CAN bus via the first CAN chip 106, and the CAN bus is connected to the power domain controller 105. The low-voltage sampling control execution unit 104 is connected to the CAN bus via the second CAN chip 107, and the CAN bus is connected to the power domain controller 105. A CAN chip includes a CAN controller and a CAN transceiver. The CAN controller is used to implement signal transmission on the CAN bus, meaning that the CAN controller can send signals to and receive signals from the CAN bus. The CAN transceiver is used to convert digital signals sent by the CAN controller into differential signals suitable for transmission on the CAN bus, and to convert differential signals received from the CAN bus into digital signals for processing by the CAN controller. Accordingly, the daisy-chain bridge circuit 103 is connected to the CAN bus via the CAN controller and CAN transceiver in the first CAN chip 106. The low-voltage sampling control execution unit 104 is connected to the CAN bus via the CAN controller and CAN transceiver in the second CAN chip 107.

[0062] In some embodiments, Figure 2 This is a structural diagram of another battery management fusion system provided according to an embodiment of the present application. Figure 2 The power domain controller 105 includes a control chip 1051, a power supply circuit 1052, and a third CAN chip 1053. The power supply circuit 1052 is used to connect or disconnect the power battery to the vehicle. The third CAN chip 1053 is connected to the first CAN chip 106 via the CAN bus. Accordingly, when the domain controller 105 sends the first control signal to the high-voltage control execution unit 101 or the high-voltage battery cell acquisition unit 102, the signal flow of each module is as follows:

[0063] (1) Inside the power domain controller 105 , the control chip 1051 is used to send a first control signal to the third CAN chip 1053 . The first control signal is used to instruct the collection of operating information of the power battery or to control the operation of the power battery.

[0064] (2) The third CAN chip 1053 is used to send the first control signal to the first CAN chip 106 via the CAN bus. The third CAN chip 1053 also includes a CAN controller and a CAN transceiver. The CAN controller of the third CAN chip 1053 is used to send the first control signal generated by the control chip 1051 to the CAN bus. During the sending process, the CAN transceiver in the third CAN chip 1053 is used to convert the first control signal sent by the CAN controller into a differential signal suitable for transmission on the CAN bus. Correspondingly, the CAN controller in the first CAN chip 106 connected to the CAN bus is used to receive the first control signal from the CAN bus. During the receiving process, the CAN transceiver in the first CAN chip 106 is used to convert the first control signal from a differential signal suitable for transmission on the CAN bus into a digital signal suitable for processing by the CAN controller.

[0065] (3) The first CAN chip 106 is used to send the first control signal to the daisy-chain bridge circuit 103. After receiving the first control signal, the CAN controller in the first CAN chip 106 can parse the first control signal to obtain key information in the first control signal, such as the execution unit of the operation indicated by the first control signal. In the case where the execution unit is the high-voltage control execution unit 101 or the high-voltage battery cell acquisition unit 102, the CAN controller in the first CAN chip 106 can send the first control signal to the daisy-chain bridge circuit 103 connected to the high-voltage control execution unit 101 or the high-voltage battery cell acquisition unit 102 respectively.

[0066] (4) The daisy chain bridge circuit 103 is used to convert the first control signal and send the converted first control signal to the high voltage control execution unit 101 when the operation indicated by the first control signal is an operation that can be executed by the high voltage control execution unit 101. When the operation indicated by the first control signal is an operation that can be executed by the high voltage battery collection unit 102, the daisy chain bridge circuit 103 sends the converted first control signal to the high voltage battery collection unit 102. Since the high voltage control execution unit 101 and the high voltage battery collection unit 102 communicate with the daisy chain bridge circuit 103 using TPL signals, the daisy chain bridge circuit 103 can convert the first control signal after receiving the first control signal, so as to convert the first control signal from a signal suitable for CAN communication to a signal suitable for daisy chain communication. When the operation indicated by the first control signal is to control the operation of the power battery, it indicates that the operation indicated by the first control signal is an operation that can be executed by the high voltage control execution unit 101, so the daisy chain bridge circuit 103 sends the converted first control signal to the high voltage control execution unit 101. When the operation indicated by the first control signal is to collect operating information of the power battery, it indicates that the operation indicated by the first control signal is an operation executable by the high-voltage battery cell collection unit 102 , so the daisy-chain bridge circuit 103 sends the converted first control signal to the high-voltage battery cell collection unit 102 .

[0067] In some embodiments, see Figure 2 The power supply circuit 1052 is also used to connect or disconnect the low-voltage lithium battery from supplying power to the vehicle. The third CAN chip 1053 is connected to the second CAN chip 106 via the CAN bus. Accordingly, the signal flow of each module during the process of the domain controller 105 sending the second control signal to the low-voltage sampling control execution unit 104 is as follows:

[0068] (1) Inside the power domain controller 105, the control chip 1051 is used to send a second control signal to the third CAN chip 1053, where the second control signal is used to instruct the collection of operating information of the low-voltage lithium battery or to control the operation of the low-voltage lithium battery.

[0069] (2) The third CAN chip 1051 is used to send the second control signal to the second CAN chip 107 via the CAN bus. The third CAN chip 1053 also includes a CAN controller and a CAN transceiver. The CAN controller of the third CAN chip 1053 is used to send the second control signal generated by the control chip 1051 to the CAN bus. During the sending process, the CAN transceiver in the third CAN chip 1053 is used to convert the second control signal sent by the CAN controller into a differential signal suitable for transmission on the CAN bus. Correspondingly, the CAN controller in the second CAN chip 107 connected to the CAN bus is used to receive the second control signal from the CAN bus. During the receiving process, the CAN transceiver in the second CAN chip 107 is used to convert the second control signal from a differential signal suitable for transmission on the CAN bus into a digital signal suitable for processing by the CAN controller.

[0070] (3) The second CAN chip 107 is used to send the second control signal to the low-voltage sampling control execution unit 104. After receiving the second control signal, the CAN controller in the second CAN chip 107 can parse the second control signal to obtain key information in the second control signal, such as the execution unit of the operation indicated by the second control signal. In the case where the execution unit is the low-voltage sampling control execution unit 104, the CAN controller in the second CAN chip 107 can send the second control signal to the low-voltage sampling control execution unit 104.

[0071] In some embodiments, the control chip 1051 in the power domain controller 105 is a multi-core chip, including a first core and a second core. Accordingly, the daisy chain bridge circuit 103 can be connected to the first core in the control chip 1051 via the CAN bus, and the low-voltage sampling control execution unit 104 can be connected to the second core in the control chip 1051 via the CAN bus. By providing different cores for the high-voltage control execution unit 101 and the high-voltage battery cell acquisition unit 102 that manage the power battery and the low-voltage sampling control execution unit 104 that manages the low-voltage lithium battery, the battery management fusion system can achieve communication between the high-voltage control execution unit 101 and the high-voltage battery cell acquisition unit 102 and the low-voltage sampling control execution unit 104 only through inter-core communication within the control chip 1051. In other words, communication between the power battery management system and the low-voltage lithium battery management system is achieved through inter-core communication, reducing communication costs and improving communication efficiency.

[0072] In some embodiments, in the intelligent charging scenario, the power battery management system and the low-voltage lithium battery management system need to communicate with each other. Figure 2 The battery management fusion system shown in the figure implements intelligent charging, including the following steps:

[0073] (1) When the second control signal from the second core is used to instruct the collection of the remaining power of the low-voltage lithium battery, the low-voltage sampling control execution unit 104 is used to collect the remaining power of the low-voltage lithium battery based on the second control signal, and send the remaining power of the low-voltage lithium battery to the second core via the CAN bus. The low-voltage sampling control execution unit 104 can send the remaining power of the low-voltage lithium battery to the second CAN chip 107 in the form of a signal. The second CAN chip 107 can send the remaining power of the low-voltage lithium battery to the CAN bus in the form of a signal. The third CAN chip 1053 in the power domain controller 105 can receive the remaining power of the low-voltage lithium battery from the CAN bus and send the remaining power of the low-voltage lithium battery to the second core in the control chip 1051.

[0074] (2) The second core is used to receive the remaining power and, when the remaining power is lower than the preset power, send a recharge signal to the first core. The recharge signal is used to instruct the low-voltage lithium battery to be recharged. In particular, when the remaining power of the low-voltage lithium battery is lower than the preset power, it indicates that the remaining power of the low-voltage lithium battery is low. In order to maintain the normal power supply of the low-voltage electrical devices in the vehicle, the second core can send a recharge signal to the first core that is in communication with the high-voltage control execution unit 101 and the high-voltage battery cell acquisition unit 102 that manage the power battery, so as to instruct the power battery to recharge the low-voltage lithium battery.

[0075] (3) The first core is used to receive the power replenishment signal and send the power replenishment signal to the daisy-chain bridge circuit 103 via the CAN bus. The first core in the control chip 1051 can send the power replenishment signal to the third CAN chip 1053. The third CAN chip 1053 can send the power replenishment signal to the CAN bus. The first CAN chip 106 can receive the power replenishment signal from the CAN bus and send the power replenishment signal to the daisy-chain bridge circuit 103.

[0076] (4) The daisy-chain bridge circuit 103 is used to convert the power supply signal from a signal suitable for CAN communication to a signal suitable for daisy-chain communication. Because the operation indicated by the power supply signal is an operation executable by the high-voltage control execution unit 101, the daisy-chain bridge circuit 103 can send the converted power supply signal to the high-voltage control execution unit 101.

[0077] (5) The high-voltage control execution unit 101 is used to receive the charging signal and, based on the charging signal, control the power battery to charge the low-voltage lithium battery. In the intelligent charging scenario, by using the battery management fusion system shown in the embodiment of the present application, it is possible to achieve intelligent charging from the high-voltage power battery to the low-voltage lithium battery through communication between different cores in the control chip, without the need for communication between the high-voltage power battery controller and the low-voltage lithium battery controller, thereby reducing communication costs and improving communication efficiency.

[0078] In some embodiments, the battery management fusion system further includes a first transformer and a second transformer. Accordingly, the high-voltage control execution unit 101 is connected to the daisy-chain bridge circuit 103 via the first transformer; the high-voltage battery cell acquisition unit 102 is connected to the daisy-chain bridge circuit 103 via the second transformer. The first transformer is used to isolate the transmit and receive signals of the high-voltage control execution unit 101, while the second transformer is used to isolate the transmit and receive signals of the high-voltage battery cell acquisition unit 102. By adding transformers between the high-voltage control execution unit and the high-voltage battery cell acquisition unit and the daisy-chain bridge circuit, the transmit and receive signals can be isolated, preventing electrical interference or electromagnetic interference during signal transmission, thereby improving the safety and stability of the device.

[0079] An embodiment of the present application provides a battery management fusion system, which connects the high-voltage control execution unit and the high-voltage battery cell acquisition unit to the power domain controller through a daisy-chain bridge circuit and a CAN bus, and connects the low-voltage sampling control execution unit to the power domain controller through a CAN bus. This enables the vehicle's power battery management system and low-voltage lithium battery management system to share a controller, which means there is no need to set up separate controllers for each. This not only reduces hardware costs, but also converts the communication mode between the power battery management system and the low-voltage lithium battery management system from communication between controllers to communication within the shared controller, thereby reducing the communication cost between the power battery management system and the low-voltage lithium battery management system and improving communication efficiency.

[0080] It should be noted that the battery management fusion system provided in the above embodiment is merely an example of the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the system can be divided into different functional modules to complete all or part of the functions described above. In addition, the battery management fusion system provided in the above embodiment and the intelligent charging method embodiment described below are based on the same concept, and the battery management fusion system provided in the above embodiment is applicable to the following method embodiment.

[0081] Figure 3This is a flow chart of an intelligent charging method provided according to an embodiment of the present application. The method is applied to a vehicle battery management fusion system. The battery management fusion system includes a high-voltage control execution unit, a daisy chain bridge circuit, a low-voltage sampling control execution unit, and a power domain controller. The power domain controller includes a control chip. The control chip is a multi-core chip, including a first core and a second core. Figure 3 As shown, the method includes the following steps:

[0082] 301. When the vehicle is in a startup state, a control signal is sent to a low-voltage sampling control execution unit through a second core.

[0083] In an embodiment of the present application, the low-voltage sampling control execution unit in the battery management fusion system is used to collect operating information of the vehicle's low-voltage lithium battery and control the operation of the low-voltage lithium battery. Accordingly, when the vehicle is in the starting state, in order to monitor the remaining power of the vehicle's low-voltage lithium battery, the power domain controller in the battery management fusion system can send a corresponding control signal to the low-voltage sampling control execution unit to control the low-voltage sampling control execution unit to collect the remaining power of the low-voltage lithium battery.

[0084] Because the control chip in the power domain controller is a multi-core chip, and the second core in the control chip communicates with the low-voltage sampling control execution unit via the CAN bus, the second core in the control chip can send control signals to the CAN bus, and the low-voltage sampling control execution unit receives these control signals from the CAN bus. The control signals are used to indicate the remaining charge of the vehicle's low-voltage lithium battery.

[0085] 302. The low-voltage sampling control execution unit collects the remaining power of the low-voltage lithium battery based on the control signal, and sends the remaining power of the low-voltage lithium battery to the second core.

[0086] In the embodiment of the present application, after receiving the control signal, the low-voltage sampling control execution unit can execute the operation indicated by the control signal, that is, control the low-voltage sampling control execution unit to collect the remaining power of the low-voltage lithium battery and send the remaining power to the CAN bus in the form of a signal. The second core can receive the remaining power from the CAN bus.

[0087] 303. When the remaining power is lower than the preset power, send a power replenishment signal to the first core via the second core.

[0088] In an embodiment of the present application, when the remaining power is lower than the preset power, it indicates that the remaining power of the low-voltage lithium battery is low. In order to maintain the normal power supply of the low-voltage electrical devices in the vehicle, the second core can send a power replenishment signal to the first core. Among them, the power replenishment signal is used to indicate that the low-voltage lithium battery is to be replenished. The first core is connected to the daisy-chain bridge circuit through the CAN bus, and the daisy-chain bridge circuit is connected to the high-voltage control execution unit that manages the power battery. The preset power can be 40%, 30%, 20%, etc., which is not limited in the embodiment of the present application.

[0089] 304. Send a power replenishment signal to the daisy-chain bridge circuit via the first core, and the daisy-chain bridge circuit is communicatively connected to the first core via the CAN bus.

[0090] In the embodiment of the present application, after receiving the power replenishment signal, the first core can send the power replenishment signal to the CAN bus, and the daisy chain bridge circuit receives the power replenishment signal from the CAN bus.

[0091] 305. Perform signal conversion on the supplementary power signal through the daisy chain bridge circuit to convert the supplementary power signal from a signal suitable for CAN communication to a signal suitable for daisy chain communication, and send the converted supplementary power signal to the high-voltage control execution unit.

[0092] In an embodiment of the present application, the high-voltage control execution unit in the battery management convergence system is used to control the operation of the vehicle's power battery. Because the high-voltage control execution unit communicates with the daisy-chain bridge circuit using TPL (Daisy Chain Protocol) signals, the daisy-chain bridge circuit, upon receiving a power-replenishing signal, can convert the power-replenishing signal from one suitable for CAN communication to one suitable for daisy-chain communication. Because the power-replenishing signal indicates an operation executable by the high-voltage control execution unit, the daisy-chain bridge circuit can transmit the converted power-replenishing signal to the high-voltage control execution unit.

[0093] 306. Through the high-voltage control execution unit, based on the converted charging signal, control the power battery to charge the low-voltage lithium battery.

[0094] In the embodiment of the present application, after receiving the converted power replenishment signal, the high-voltage control execution unit can execute the operation indicated by the power replenishment signal, that is, control the power battery to replenish the low-voltage lithium battery.

[0095] An embodiment of the present application provides an intelligent charging method by using a battery management fusion system that connects the high-voltage control execution unit to the power domain controller through a daisy-chain bridge circuit and a CAN bus, and connects the low-voltage sampling control execution unit to the power domain controller through a CAN bus, and sets different cores for the high-voltage control execution unit that manages the power battery and the low-voltage sampling control execution unit that manages the low-voltage lithium battery in the battery management fusion system. The battery management fusion system can realize communication between the high-voltage control execution unit and the low-voltage sampling control execution unit only through inter-core communication within the control chip in the power domain controller, that is, intelligent charging of the high-voltage power battery to the low-voltage lithium battery can be realized through communication between different cores in the control chip, without the need for communication between the controller of the high-voltage power battery and the controller of the low-voltage lithium battery, thereby reducing communication costs and improving communication efficiency.

[0096] Figure 4 This is a schematic diagram of an implementation environment of an intelligent power replenishment method provided according to an embodiment of the present application. Figure 4 The implementation environment includes a vehicle 401 and an electronic device 402, and the vehicle 401 and the electronic device 402 are connected via a wireless network.

[0097] In some embodiments, a battery management fusion system is configured in vehicle 401 and is used to manage the power battery and low-voltage lithium battery in vehicle 401. The power domain controller in the battery management fusion system is used to control the high-voltage control execution unit, the high-voltage battery cell acquisition unit, and the low-voltage sampling control execution unit. The high-voltage control execution unit is used to control the operation of the power battery in vehicle 401. The high-voltage battery cell acquisition unit is used to collect operating information of the power battery in vehicle 401. The low-voltage sampling control execution unit is used to collect operating information of the low-voltage lithium battery in vehicle 401 and control the operation of the low-voltage lithium battery.

[0098] In some embodiments, electronic device 402 can be a controller or onboard terminal on vehicle 401 itself, meaning that vehicle 401 can utilize its own device to implement intelligent charging methods. Electronic device 402 can also be a mobile terminal that establishes a communication connection with vehicle 401, such as a smartphone, tablet, laptop, or desktop computer. For example, if electronic device 402 is an onboard terminal on vehicle 401, onboard terminal 401 can display the remaining charge of vehicle 401's power battery and low-voltage lithium battery. When the remaining charge of the low-voltage lithium battery is low, it sends a control signal to the power domain controller in the vehicle's battery management fusion system. Based on this control signal, the power domain controller sends a charging signal to the high-voltage control execution unit in the battery management fusion system, which manages the operation of the power battery. Based on this charging signal, the high-voltage control execution unit controls the power battery to charge the low-voltage lithium battery.

[0099] Figure 5 The figure is a schematic diagram of the structure of an electronic device according to an embodiment of the present application. The electronic device 500 may be a portable mobile terminal, such as a smartphone, a tablet computer, an MP3 player (Moving Picture Experts Group Audio Layer III), an MP4 player (Moving Picture Experts Group Audio Layer IV), a laptop computer, or a desktop computer. The electronic device 500 may also be referred to as a user device, a portable terminal, a laptop terminal, a desktop terminal, or other similar names.

[0100] Typically, the electronic device 500 includes a processor 501 and a memory 502 .

[0101] Processor 501 may include one or more processing cores, such as a quad-core processor or an octa-core processor. Processor 501 may be implemented in hardware using at least one of the following: a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), or a PLA (Programmable Logic Array). Processor 501 may also include a main processor and a coprocessor. The main processor is used to process data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, processor 501 may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing content required for display. In some embodiments, processor 501 may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0102] Memory 502 may include one or more computer-readable storage media, which may be non-transitory. Memory 502 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices and flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in memory 502 is used to store at least one computer program, which is executed by processor 501 to implement the intelligent power replenishment method provided in the method embodiment of the present application.

[0103] In some embodiments, the electronic device 500 may optionally include a peripheral device interface 503 and at least one peripheral device. The processor 501, memory 502, and peripheral device interface 503 may be communicatively connected via a bus or signal lines. Each peripheral device may be communicatively connected to the peripheral device interface 503 via a bus, signal lines, or circuit boards. Specifically, the peripheral device may include at least one of a radio frequency circuit 504, a display screen 505, a camera assembly 506, an audio circuit 507, and a power supply 508.

[0104] The peripheral device interface 503 can be used to connect at least one I / O (Input / Output)-related peripheral device to the processor 501 and the memory 502. In some embodiments, the processor 501, the memory 502, and the peripheral device interface 503 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 501, the memory 502, and the peripheral device interface 503 can be implemented on separate chips or circuit boards, which is not limited in this embodiment.

[0105] The RF circuit 504 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The RF circuit 504 communicates with communication networks and other communication devices via electromagnetic signals. The RF circuit 504 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals into electrical signals. In some embodiments, the RF circuit 504 includes an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, and the like. The RF circuit 504 can communicate with other terminals via at least one wireless communication protocol. Such wireless communication protocols include, but are not limited to, the World Wide Web, metropolitan area networks, intranets, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and / or WiFi (Wireless Fidelity) networks. In some embodiments, the RF circuit 504 may also include circuitry related to Near Field Communication (NFC), although this application does not limit this.

[0106] Display screen 505 is used to display a user interface (UI). This UI may include graphics, text, icons, videos, or any combination thereof. If display screen 505 is a touchscreen display, it is also capable of detecting touch signals on or above the surface of display screen 505. These touch signals can be input as control signals to processor 501 for processing. Display screen 505 can also be used to provide virtual buttons and / or a virtual keyboard, also known as soft buttons and / or a soft keyboard. In some embodiments, there may be a single display screen 505, located on the front panel of electronic device 500. In other embodiments, there may be at least two display screens 505, located on different surfaces of electronic device 500 or in a foldable design. In still other embodiments, display screen 505 may be a flexible display, located on a curved or foldable surface of electronic device 500. Display screen 505 can also be configured as a non-rectangular, irregular shape, also known as a special-shaped screen. Display screen 505 can be made of materials such as LCD (Liquid Crystal Display) and OLED (Organic Light-Emitting Diode).

[0107] The camera assembly 506 is used to capture images or videos. In some embodiments, the camera assembly 506 includes a front camera and a rear camera. Typically, the front camera is provided on the front panel of the terminal, and the rear camera is provided on the back of the terminal. In some embodiments, there are at least two rear cameras, which are any one of a main camera, a depth of field camera, a wide-angle camera, and a telephoto camera, so as to realize the fusion of the main camera and the depth of field camera to realize the background blur function, the fusion of the main camera and the wide-angle camera to realize panoramic shooting and VR (Virtual Reality) shooting function or other fusion shooting functions. In some embodiments, the camera assembly 506 may also include a flash. The flash can be a single-color temperature flash or a dual-color temperature flash. A dual-color temperature flash refers to a combination of a warm light flash and a cold light flash, which can be used for light compensation at different color temperatures.

[0108] The audio circuit 507 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, and convert the sound waves into electrical signals to be input into the processor 501 for processing, or input into the radio frequency circuit 504 to achieve voice communication. For the purpose of stereo sound collection or noise reduction, there can be multiple microphones, which are respectively arranged in different parts of the electronic device 500. The microphone can also be an array microphone or an omnidirectional collection microphone. The speaker is used to convert the electrical signals from the processor 501 or the radio frequency circuit 504 into sound waves. The speaker can be a traditional thin film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can not only convert the electrical signals into sound waves audible to humans, but also convert the electrical signals into sound waves inaudible to humans for purposes such as ranging. In some embodiments, the audio circuit 507 may also include a headphone jack.

[0109] Power supply 508 is used to power various components in electronic device 500. Power supply 508 can be AC ​​power, DC power, a disposable battery, or a rechargeable battery. When power supply 508 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery that is charged via a wired line, while a wireless rechargeable battery is a battery that is charged via a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0110] In some embodiments, the electronic device 500 further includes one or more sensors 509 , including but not limited to: an acceleration sensor 510 , a gyroscope sensor 511 , a pressure sensor 512 , an optical sensor 513 , and a proximity sensor 514 .

[0111] The accelerometer 510 can detect the magnitude of acceleration along the three coordinate axes of the coordinate system established by the electronic device 500. For example, the accelerometer 510 can be used to detect the components of gravity acceleration along the three coordinate axes. The processor 501 can control the display screen 505 to display the user interface in a landscape or portrait view based on the gravity acceleration signal collected by the accelerometer 510. The accelerometer 510 can also be used to collect game or user motion data.

[0112] The gyroscope sensor 511 can detect the orientation and rotation angle of the electronic device 500. It can also work with the accelerometer 510 to collect 3D motions of the user on the electronic device 500. Based on the data collected by the gyroscope sensor 511, the processor 501 can implement the following functions: motion sensing (for example, changing the UI based on the user's tilting operation), image stabilization during shooting, game control, and inertial navigation.

[0113] The pressure sensor 512 can be set on the side frame of the electronic device 500 and / or the lower layer of the display screen 505. When the pressure sensor 512 is set on the side frame of the electronic device 500, it can detect the user's grip signal of the electronic device 500, and the processor 501 performs left and right hand recognition or shortcut operations based on the grip signal collected by the pressure sensor 512. When the pressure sensor 512 is set on the lower layer of the display screen 505, the processor 501 controls the operable controls on the UI interface based on the user's pressure operation on the display screen 505. The operable controls include at least one of button controls, scroll bar controls, icon controls, and menu controls.

[0114] The optical sensor 513 is used to detect ambient light intensity. In one embodiment, the processor 501 can control the display brightness of the display screen 505 based on the ambient light intensity detected by the optical sensor 513. Specifically, when the ambient light intensity is high, the display brightness of the display screen 505 is increased; when the ambient light intensity is low, the display brightness of the display screen 505 is decreased. In another embodiment, the processor 501 can also dynamically adjust the shooting parameters of the camera assembly 506 based on the ambient light intensity detected by the optical sensor 513.

[0115] Proximity sensor 514, also known as a distance sensor, is typically located on the front panel of electronic device 500. Proximity sensor 514 is used to detect the distance between the user and the front of electronic device 500. In one embodiment, when proximity sensor 514 detects that the distance between the user and the front of electronic device 500 is gradually decreasing, processor 501 controls display screen 505 to switch from a screen-on state to a screen-off state. When proximity sensor 514 detects that the distance between the user and the front of electronic device 500 is gradually increasing, processor 501 controls display screen 505 to switch from a screen-off state to a screen-on state.

[0116] Those skilled in the art will understand that Figure 5 The structure shown in the figure does not constitute a limitation on the electronic device 500, and the electronic device 500 may include more or fewer components than shown in the figure, or combine certain components, or adopt a different component arrangement.

[0117] The present application also provides a computer-readable storage medium storing at least one computer program. The computer-readable storage medium is loaded and executed by a processor of an electronic device to implement the operations performed by the electronic device in the intelligent power replenishment method of the above embodiment. For example, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, or an optical data storage device.

[0118] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

[0119] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A battery management fusion system, characterized in that: Applied to vehicles, the battery management fusion system includes a high-voltage control execution unit, a high-voltage battery cell acquisition unit, a daisy chain bridge circuit, a low-voltage sampling control execution unit, and a power domain controller; The high-voltage battery cell acquisition unit is used to collect operating information of the vehicle's power battery, the high-voltage control execution unit is used to control the operation of the power battery, and the low-voltage sampling control execution unit is used to collect operating information of the vehicle's low-voltage lithium battery and control the operation of the low-voltage lithium battery; The high-voltage control execution unit and the high-voltage battery cell acquisition unit are respectively connected to the daisy chain bridge circuit. The power domain controller includes a control chip, which is a multi-core chip including a first core and a second core; The daisy chain bridge circuit is communicatively connected to the first core in the control chip via a controller area network (CAN) bus; The low-voltage sampling control execution unit is communicatively connected to the second core in the control chip via the CAN bus.

2. The system according to claim 1, wherein: The battery management fusion system further includes a first transformer and a second transformer; The high-voltage control execution unit and the high-voltage battery cell acquisition unit are respectively connected to the daisy chain bridge circuit, including: The high-voltage control execution unit is connected to the daisy-chain bridge circuit via the first transformer, and the first transformer is used to isolate the sending signal and the receiving signal of the high-voltage control execution unit; The high-voltage battery cell acquisition unit is connected to the daisy-chain bridge circuit via the second transformer, and the second transformer is used to isolate the sending signal and the receiving signal of the high-voltage battery cell acquisition unit.

3. The system according to claim 1, wherein: The battery management fusion system further includes a first CAN chip and a second CAN chip; The daisy chain bridge circuit is communicatively connected to the power domain controller via a CAN bus, and includes: The daisy chain bridge circuit is connected to the CAN bus via the first CAN chip, and the CAN bus is connected to the power domain controller; The low-voltage sampling control execution unit is communicatively connected to the power domain controller via the CAN bus, and includes: The low-voltage sampling control execution unit is connected to the CAN bus through the second CAN chip, and the CAN bus is connected to the power domain controller.

4. The system according to claim 3, characterized in that The power domain controller includes a control chip, a power supply circuit, and a third CAN chip. The power supply circuit is used to connect or disconnect the power supply of the power battery to the vehicle. The third CAN chip is communicatively connected to the first CAN chip via the CAN bus. The control chip is used to send a first control signal to the third CAN chip, where the first control signal is used to instruct the collection of operating information of the power battery or control the operation of the power battery; The third CAN chip is used to send the first control signal to the first CAN chip through the CAN bus; The first CAN chip is used to send the first control signal to the daisy chain bridge circuit; The daisy chain bridge circuit is used to perform signal conversion on the first control signal, and when the operation indicated by the first control signal is an operation executable by the high-voltage control execution unit, the converted first control signal is sent to the high-voltage control execution unit; when the operation indicated by the first control signal is an operation executable by the high-voltage battery cell acquisition unit, the converted first control signal is sent to the high-voltage battery cell acquisition unit.

5. The system according to claim 3, wherein: The power domain controller includes a control chip, a power supply circuit, and a third CAN chip. The power supply circuit is used to connect or disconnect the low-voltage lithium battery from supplying power to the vehicle. The third CAN chip is communicatively connected to the second CAN chip via the CAN bus. The control chip is used to send a second control signal to the third CAN chip, where the second control signal is used to instruct the collection of operating information of the low-voltage lithium battery or to control the operation of the low-voltage lithium battery; The third CAN chip is used to send the second control signal to the second CAN chip through the CAN bus; The second CAN chip is used to send the second control signal to the low-voltage sampling control execution unit.

6. The system according to claim 1, wherein: In a case where the second control signal from the second core is used to instruct to collect the remaining power of the low-voltage lithium battery, the low-voltage sampling control execution unit is used to collect the remaining power of the low-voltage lithium battery based on the second control signal, and send the remaining power of the low-voltage lithium battery to the second core through the CAN bus; The second core is used to receive the remaining power and, when the remaining power is lower than a preset power, send a power replenishment signal to the first core, wherein the power replenishment signal is used to instruct the low-voltage lithium battery to be recharged; The first core is used to receive the power replenishment signal and send the power replenishment signal to the daisy chain bridge circuit through the CAN bus; The daisy chain bridge circuit is used to perform signal conversion on the supplementary power signal, so as to convert the supplementary power signal from a signal suitable for CAN communication into a signal suitable for daisy chain communication, and send the converted supplementary power signal to the high-voltage control execution unit; The high-voltage control execution unit is used to receive the power replenishment signal and, based on the power replenishment signal, control the power battery to replenish the low-voltage lithium battery.

7. An intelligent power replenishment method, characterized in that: A battery management fusion system for a vehicle includes a high-voltage control execution unit, a daisy-chain bridge circuit, a low-voltage sampling control execution unit, and a power domain controller. The power domain controller includes a control chip, which is a multi-core chip including a first core and a second core. The method includes: When the vehicle is in a starting state, a control signal is sent to the low-voltage sampling control execution unit through the second core, wherein the control signal is used to instruct to collect the remaining power of the low-voltage lithium battery of the vehicle, and the second core is communicatively connected to the low-voltage sampling control execution unit through a CAN bus; The low-voltage sampling control execution unit collects the remaining power of the low-voltage lithium battery based on the control signal, and sends the remaining power of the low-voltage lithium battery to the second core; When the remaining power is lower than the preset power, a power replenishment signal is sent to the first core through the second core, wherein the power replenishment signal is used to instruct the low-voltage lithium battery to be recharged; sending the power replenishment signal to the daisy-chain bridge circuit via the first core, wherein the daisy-chain bridge circuit is communicatively connected to the first core via a CAN bus; Performing signal conversion on the supplementary power signal through the daisy chain bridge circuit to convert the supplementary power signal from a signal suitable for CAN communication to a signal suitable for daisy chain communication, and sending the converted supplementary power signal to the high-voltage control execution unit; The high-voltage control execution unit controls the power battery of the vehicle to replenish the low-voltage lithium battery based on the converted replenishment signal.

8. An electronic device, characterized in that: The electronic device includes a processor and a memory, the memory is used to store at least one computer program, and the at least one computer program is loaded by the processor and executes the intelligent power charging method according to claim 7.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium is used to store at least one computer program, and the at least one computer program is used to execute the intelligent power charging method according to claim 7.

Citation Information

Patent Citations

  • Battery management system for electric vehicle and electric vehicle

    CN113928124A

  • Domain control battery management system

    CN114074576A